Pileus Git - ~andy/gtk/blob - gtk/gtktreeview.c

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "config.h"
  22 #include <string.h>
  23 #include <gdk/gdkkeysyms.h>
  24
  25 #include "gtktreeview.h"
  26 #include "gtkrbtree.h"
  27 #include "gtktreednd.h"
  28 #include "gtktreeprivate.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkmain.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtkalignment.h"
  35 #include "gtklabel.h"
  36 #include "gtkhbox.h"
  37 #include "gtkvbox.h"
  38 #include "gtkarrow.h"
  39 #include "gtkintl.h"
  40 #include "gtkbindings.h"
  41 #include "gtkcontainer.h"
  42 #include "gtkentry.h"
  43 #include "gtkframe.h"
  44 #include "gtktreemodelsort.h"
  45 #include "gtktooltip.h"
  46 #include "gtksizerequest.h"
  47 #include "gtkprivate.h"
  48
  49 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  50 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  51 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  52 #define SCROLL_EDGE_SIZE 15
  53 #define EXPANDER_EXTRA_PADDING 4
  54 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  55 #define AUTO_EXPAND_TIMEOUT 500
  56
  57 /* The "background" areas of all rows/cells add up to cover the entire tree.
  58  * The background includes all inter-row and inter-cell spacing.
  59  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  60  * i.e. just the cells, no spacing.
  61  */
  62
  63 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  64 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  65
  66 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  67  * vice versa.
  68  */
  69 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  70 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  71
  72 /* This is in bin_window coordinates */
  73 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  74 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  75
  76 #define ROW_HEIGHT(tree_view,height) \
  77   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  78
  79
  80 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  81 struct _GtkTreeViewChild
  82 {
  83   GtkWidget *widget;
  84   gint x;
  85   gint y;
  86   gint width;
  87   gint height;
  88 };
  89
  90
  91 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  92 struct _TreeViewDragInfo
  93 {
  94   GdkModifierType start_button_mask;
  95   GtkTargetList *_unused_source_target_list;
  96   GdkDragAction source_actions;
  97
  98   GtkTargetList *_unused_dest_target_list;
  99
 100   guint source_set : 1;
 101   guint dest_set : 1;
 102 };
 103
 104
 105 /* Signals */
 106 enum
 107 {
 108   ROW_ACTIVATED,
 109   TEST_EXPAND_ROW,
 110   TEST_COLLAPSE_ROW,
 111   ROW_EXPANDED,
 112   ROW_COLLAPSED,
 113   COLUMNS_CHANGED,
 114   CURSOR_CHANGED,
 115   MOVE_CURSOR,
 116   SELECT_ALL,
 117   UNSELECT_ALL,
 118   SELECT_CURSOR_ROW,
 119   TOGGLE_CURSOR_ROW,
 120   EXPAND_COLLAPSE_CURSOR_ROW,
 121   SELECT_CURSOR_PARENT,
 122   START_INTERACTIVE_SEARCH,
 123   LAST_SIGNAL
 124 };
 125
 126 /* Properties */
 127 enum {
 128   PROP_0,
 129   PROP_MODEL,
 130   PROP_HADJUSTMENT,
 131   PROP_VADJUSTMENT,
 132   PROP_HEADERS_VISIBLE,
 133   PROP_HEADERS_CLICKABLE,
 134   PROP_EXPANDER_COLUMN,
 135   PROP_REORDERABLE,
 136   PROP_RULES_HINT,
 137   PROP_ENABLE_SEARCH,
 138   PROP_SEARCH_COLUMN,
 139   PROP_FIXED_HEIGHT_MODE,
 140   PROP_HOVER_SELECTION,
 141   PROP_HOVER_EXPAND,
 142   PROP_SHOW_EXPANDERS,
 143   PROP_LEVEL_INDENTATION,
 144   PROP_RUBBER_BANDING,
 145   PROP_ENABLE_GRID_LINES,
 146   PROP_ENABLE_TREE_LINES,
 147   PROP_TOOLTIP_COLUMN
 148 };
 149
 150 /* object signals */
 151 static void     gtk_tree_view_finalize             (GObject          *object);
 152 static void     gtk_tree_view_set_property         (GObject         *object,
 153                                                     guint            prop_id,
 154                                                     const GValue    *value,
 155                                                     GParamSpec      *pspec);
 156 static void     gtk_tree_view_get_property         (GObject         *object,
 157                                                     guint            prop_id,
 158                                                     GValue          *value,
 159                                                     GParamSpec      *pspec);
 160
 161 /* gtkobject signals */
 162 static void     gtk_tree_view_destroy              (GtkObject        *object);
 163
 164 /* gtkwidget signals */
 165 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 166 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 167 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 168 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 169                                                     GtkRequisition   *requisition);
 170 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 171                                                     GtkAllocation    *allocation);
 172 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 173                                                     GdkEventExpose   *event);
 174 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 175                                                     GdkEventKey      *event);
 176 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 177                                                     GdkEventKey      *event);
 178 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 179                                                     GdkEventMotion   *event);
 180 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 181                                                     GdkEventCrossing *event);
 182 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 183                                                     GdkEventCrossing *event);
 184 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 185                                                     GdkEventButton   *event);
 186 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 187                                                     GdkEventButton   *event);
 188 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 189                                                     GdkEventGrabBroken *event);
 190 #if 0
 191 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 192                                                     GdkEventConfigure *event);
 193 #endif
 194
 195 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 196                                                     GtkWidget        *child);
 197 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 198                                                     GdkEventFocus    *event);
 199 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 200                                                     GtkDirectionType  direction);
 201 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 202 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 203                                                     GtkStyle         *previous_style);
 204 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 205                                                     gboolean          was_grabbed);
 206 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 207                                                     GtkStateType      previous_state);
 208
 209 /* container signals */
 210 static void     gtk_tree_view_remove               (GtkContainer     *container,
 211                                                     GtkWidget        *widget);
 212 static void     gtk_tree_view_forall               (GtkContainer     *container,
 213                                                     gboolean          include_internals,
 214                                                     GtkCallback       callback,
 215                                                     gpointer          callback_data);
 216
 217 /* Source side drag signals */
 218 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 219                                             GdkDragContext   *context);
 220 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 221                                             GdkDragContext   *context);
 222 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 223                                             GdkDragContext   *context,
 224                                             GtkSelectionData *selection_data,
 225                                             guint             info,
 226                                             guint             time);
 227 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 228                                             GdkDragContext   *context);
 229
 230 /* Target side drag signals */
 231 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 232                                                   GdkDragContext   *context,
 233                                                   guint             time);
 234 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 235                                                   GdkDragContext   *context,
 236                                                   gint              x,
 237                                                   gint              y,
 238                                                   guint             time);
 239 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 240                                                   GdkDragContext   *context,
 241                                                   gint              x,
 242                                                   gint              y,
 243                                                   guint             time);
 244 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 245                                                   GdkDragContext   *context,
 246                                                   gint              x,
 247                                                   gint              y,
 248                                                   GtkSelectionData *selection_data,
 249                                                   guint             info,
 250                                                   guint             time);
 251
 252 /* tree_model signals */
 253 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 254                                                            GtkAdjustment   *hadj,
 255                                                            GtkAdjustment   *vadj);
 256 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 257                                                            GtkMovementStep  step,
 258                                                            gint             count);
 259 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 260 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 262                                                            gboolean         start_editing);
 263 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 264 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 265                                                                gboolean         logical,
 266                                                                gboolean         expand,
 267                                                                gboolean         open_all);
 268 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 269 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 270                                                            GtkTreePath     *path,
 271                                                            GtkTreeIter     *iter,
 272                                                            gpointer         data);
 273 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 274                                                            GtkTreePath     *path,
 275                                                            GtkTreeIter     *iter,
 276                                                            gpointer         data);
 277 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 278                                                            GtkTreePath     *path,
 279                                                            GtkTreeIter     *iter,
 280                                                            gpointer         data);
 281 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 282                                                            GtkTreePath     *path,
 283                                                            gpointer         data);
 284 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 285                                                            GtkTreePath     *parent,
 286                                                            GtkTreeIter     *iter,
 287                                                            gint            *new_order,
 288                                                            gpointer         data);
 289
 290 /* Incremental reflow */
 291 static gboolean validate_row             (GtkTreeView *tree_view,
 292                                           GtkRBTree   *tree,
 293                                           GtkRBNode   *node,
 294                                           GtkTreeIter *iter,
 295                                           GtkTreePath *path);
 296 static void     validate_visible_area    (GtkTreeView *tree_view);
 297 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 298 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 299                                           gboolean     size_request);
 300 static gboolean validate_rows            (GtkTreeView *tree_view);
 301 static gboolean presize_handler_callback (gpointer     data);
 302 static void     install_presize_handler  (GtkTreeView *tree_view);
 303 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 304 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 305                                              GtkTreePath *path,
 306                                              gint         offset);
 307 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 308 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 309 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 310
 311 /* Internal functions */
 312 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 313                                                               GtkTreeViewColumn  *column);
 314 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 315                                                               guint               keyval,
 316                                                               guint               modmask,
 317                                                               gboolean            add_shifted_binding,
 318                                                               GtkMovementStep     step,
 319                                                               gint                count);
 320 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 321                                                               GtkRBTree          *tree);
 322 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 323                                                               GtkTreePath        *path,
 324                                                               const GdkRectangle *clip_rect);
 325 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 326                                                               GtkRBTree          *tree,
 327                                                               GtkRBNode          *node,
 328                                                               const GdkRectangle *clip_rect);
 329 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 330                                                               GtkRBTree          *tree,
 331                                                               GtkRBNode          *node,
 332                                                               gint                x,
 333                                                               gint                y);
 334 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 335                                                               GtkRBTree          *tree,
 336                                                               gint               *x1,
 337                                                               gint               *x2);
 338 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 339                                                               gint                i,
 340                                                               gint               *x);
 341 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 342                                                               GtkTreeView        *tree_view);
 343 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 344                                                               GtkRBTree          *tree,
 345                                                               GtkTreeIter        *iter,
 346                                                               gint                depth,
 347                                                               gboolean            recurse);
 348 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 349                                                               GtkRBTree          *tree,
 350                                                               GtkRBNode          *node);
 351 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 352                                                               GtkTreeViewColumn  *column,
 353                                                               gboolean            focus_to_cell);
 354 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 355                                                               GdkEventMotion     *event);
 356 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 357 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 358                                                               gint                count);
 359 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 360                                                               gint                count);
 361 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 362                                                               gint                count);
 363 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 364                                                               gint                count);
 365 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 366                                                               GtkTreePath        *path,
 367                                                               GtkRBTree          *tree,
 368                                                               GtkRBNode          *node,
 369                                                               gboolean            animate);
 370 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 371                                                               GtkTreePath        *path,
 372                                                               GtkRBTree          *tree,
 373                                                               GtkRBNode          *node,
 374                                                               gboolean            open_all,
 375                                                               gboolean            animate);
 376 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 377                                                               GtkTreePath        *path,
 378                                                               gboolean            clear_and_select,
 379                                                               gboolean            clamp_node);
 380 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 381 static void     column_sizing_notify                         (GObject            *object,
 382                                                               GParamSpec         *pspec,
 383                                                               gpointer            data);
 384 static gboolean expand_collapse_timeout                      (gpointer            data);
 385 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 386                                                               GtkRBTree          *tree,
 387                                                               GtkRBNode          *node,
 388                                                               gboolean            expand);
 389 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 390 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 391 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 392 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 393 static void     update_prelight                              (GtkTreeView        *tree_view,
 394                                                               int                 x,
 395                                                               int                 y);
 396
 397 /* interactive search */
 398 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 399 static void     gtk_tree_view_search_dialog_hide        (GtkWidget        *search_dialog,
 400                                                          GtkTreeView      *tree_view,
 401                                                          GdkDevice        *device);
 402 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 403                                                          GtkWidget        *search_dialog,
 404                                                          gpointer          user_data);
 405 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 406                                                          GtkMenu          *menu,
 407                                                          gpointer          data);
 408 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 409                                                          GtkTreeView      *tree_view);
 410 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 411                                                          GtkTreeView      *tree_view);
 412 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 413 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 414                                                          gpointer          data);
 415 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 416                                                          GdkEventAny      *event,
 417                                                          GtkTreeView      *tree_view);
 418 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 419                                                          GdkEventButton   *event,
 420                                                          GtkTreeView      *tree_view);
 421 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 422                                                          GdkEventScroll   *event,
 423                                                          GtkTreeView      *tree_view);
 424 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 425                                                          GdkEventKey      *event,
 426                                                          GtkTreeView      *tree_view);
 427 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 428                                                          GtkTreeView      *tree_view,
 429                                                          gboolean          up);
 430 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 431                                                          gint              column,
 432                                                          const gchar      *key,
 433                                                          GtkTreeIter      *iter,
 434                                                          gpointer          search_data);
 435 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 436                                                          GtkTreeSelection *selection,
 437                                                          GtkTreeIter      *iter,
 438                                                          const gchar      *text,
 439                                                          gint             *count,
 440                                                          gint              n);
 441 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 442                                                          GtkTreeView      *tree_view);
 443 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 444                                                          GtkWidget        *child_widget,
 445                                                          gint              x,
 446                                                          gint              y,
 447                                                          gint              width,
 448                                                          gint              height);
 449 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 450                                                          GtkTreePath      *cursor_path);
 451 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 452                                               GtkTreeViewColumn *column,
 453                                               GtkTreePath       *path,
 454                                               GtkCellEditable   *cell_editable,
 455                                               GdkRectangle      *cell_area,
 456                                               GdkEvent          *event,
 457                                               guint              flags);
 458 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 459                                                          gboolean     cancel_editing);
 460 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 461                                                              GdkDevice   *device,
 462                                                              gboolean     keybinding);
 463 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 464 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 465                                                          GtkTreeViewColumn *column,
 466                                                          gint               drop_position);
 467
 468 /* GtkBuildable */
 469 static void     gtk_tree_view_buildable_add_child          (GtkBuildable      *tree_view,
 470                                                             GtkBuilder        *builder,
 471                                                             GObject           *child,
 472                                                             const gchar       *type);
 473 static GObject *gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
 474                                                             GtkBuilder        *builder,
 475                                                             const gchar       *childname);
 476 static void     gtk_tree_view_buildable_init               (GtkBuildableIface *iface);
 477
 478
 479 static gboolean scroll_row_timeout                   (gpointer     data);
 480 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 481 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 482
 483 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 484
 485 \f
 486
 487 /* GType Methods
 488  */
 489
 490 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 491                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 492                                                 gtk_tree_view_buildable_init))
 493
 494 static void
 495 gtk_tree_view_class_init (GtkTreeViewClass *class)
 496 {
 497   GObjectClass *o_class;
 498   GtkObjectClass *object_class;
 499   GtkWidgetClass *widget_class;
 500   GtkContainerClass *container_class;
 501   GtkBindingSet *binding_set;
 502
 503   binding_set = gtk_binding_set_by_class (class);
 504
 505   o_class = (GObjectClass *) class;
 506   object_class = (GtkObjectClass *) class;
 507   widget_class = (GtkWidgetClass *) class;
 508   container_class = (GtkContainerClass *) class;
 509
 510   /* GObject signals */
 511   o_class->set_property = gtk_tree_view_set_property;
 512   o_class->get_property = gtk_tree_view_get_property;
 513   o_class->finalize = gtk_tree_view_finalize;
 514
 515   /* GtkObject signals */
 516   object_class->destroy = gtk_tree_view_destroy;
 517
 518   /* GtkWidget signals */
 519   widget_class->map = gtk_tree_view_map;
 520   widget_class->realize = gtk_tree_view_realize;
 521   widget_class->unrealize = gtk_tree_view_unrealize;
 522   widget_class->size_request = gtk_tree_view_size_request;
 523   widget_class->size_allocate = gtk_tree_view_size_allocate;
 524   widget_class->button_press_event = gtk_tree_view_button_press;
 525   widget_class->button_release_event = gtk_tree_view_button_release;
 526   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 527   /*widget_class->configure_event = gtk_tree_view_configure;*/
 528   widget_class->motion_notify_event = gtk_tree_view_motion;
 529   widget_class->expose_event = gtk_tree_view_expose;
 530   widget_class->key_press_event = gtk_tree_view_key_press;
 531   widget_class->key_release_event = gtk_tree_view_key_release;
 532   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 533   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 534   widget_class->focus_out_event = gtk_tree_view_focus_out;
 535   widget_class->drag_begin = gtk_tree_view_drag_begin;
 536   widget_class->drag_end = gtk_tree_view_drag_end;
 537   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 538   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 539   widget_class->drag_leave = gtk_tree_view_drag_leave;
 540   widget_class->drag_motion = gtk_tree_view_drag_motion;
 541   widget_class->drag_drop = gtk_tree_view_drag_drop;
 542   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 543   widget_class->focus = gtk_tree_view_focus;
 544   widget_class->grab_focus = gtk_tree_view_grab_focus;
 545   widget_class->style_set = gtk_tree_view_style_set;
 546   widget_class->grab_notify = gtk_tree_view_grab_notify;
 547   widget_class->state_changed = gtk_tree_view_state_changed;
 548
 549   /* GtkContainer signals */
 550   container_class->remove = gtk_tree_view_remove;
 551   container_class->forall = gtk_tree_view_forall;
 552   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 553
 554   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 555   class->move_cursor = gtk_tree_view_real_move_cursor;
 556   class->select_all = gtk_tree_view_real_select_all;
 557   class->unselect_all = gtk_tree_view_real_unselect_all;
 558   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 559   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 560   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 561   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 562   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 563
 564   /* Properties */
 565
 566   g_object_class_install_property (o_class,
 567                                    PROP_MODEL,
 568                                    g_param_spec_object ("model",
 569                                                         P_("TreeView Model"),
 570                                                         P_("The model for the tree view"),
 571                                                         GTK_TYPE_TREE_MODEL,
 572                                                         GTK_PARAM_READWRITE));
 573
 574   g_object_class_install_property (o_class,
 575                                    PROP_HADJUSTMENT,
 576                                    g_param_spec_object ("hadjustment",
 577                                                         P_("Horizontal Adjustment"),
 578                                                         P_("Horizontal Adjustment for the widget"),
 579                                                         GTK_TYPE_ADJUSTMENT,
 580                                                         GTK_PARAM_READWRITE));
 581
 582   g_object_class_install_property (o_class,
 583                                    PROP_VADJUSTMENT,
 584                                    g_param_spec_object ("vadjustment",
 585                                                         P_("Vertical Adjustment"),
 586                                                         P_("Vertical Adjustment for the widget"),
 587                                                         GTK_TYPE_ADJUSTMENT,
 588                                                         GTK_PARAM_READWRITE));
 589
 590   g_object_class_install_property (o_class,
 591                                    PROP_HEADERS_VISIBLE,
 592                                    g_param_spec_boolean ("headers-visible",
 593                                                          P_("Headers Visible"),
 594                                                          P_("Show the column header buttons"),
 595                                                          TRUE,
 596                                                          GTK_PARAM_READWRITE));
 597
 598   g_object_class_install_property (o_class,
 599                                    PROP_HEADERS_CLICKABLE,
 600                                    g_param_spec_boolean ("headers-clickable",
 601                                                          P_("Headers Clickable"),
 602                                                          P_("Column headers respond to click events"),
 603                                                          TRUE,
 604                                                          GTK_PARAM_READWRITE));
 605
 606   g_object_class_install_property (o_class,
 607                                    PROP_EXPANDER_COLUMN,
 608                                    g_param_spec_object ("expander-column",
 609                                                         P_("Expander Column"),
 610                                                         P_("Set the column for the expander column"),
 611                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 612                                                         GTK_PARAM_READWRITE));
 613
 614   g_object_class_install_property (o_class,
 615                                    PROP_REORDERABLE,
 616                                    g_param_spec_boolean ("reorderable",
 617                                                          P_("Reorderable"),
 618                                                          P_("View is reorderable"),
 619                                                          FALSE,
 620                                                          GTK_PARAM_READWRITE));
 621
 622   g_object_class_install_property (o_class,
 623                                    PROP_RULES_HINT,
 624                                    g_param_spec_boolean ("rules-hint",
 625                                                          P_("Rules Hint"),
 626                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 627                                                          FALSE,
 628                                                          GTK_PARAM_READWRITE));
 629
 630     g_object_class_install_property (o_class,
 631                                      PROP_ENABLE_SEARCH,
 632                                      g_param_spec_boolean ("enable-search",
 633                                                            P_("Enable Search"),
 634                                                            P_("View allows user to search through columns interactively"),
 635                                                            TRUE,
 636                                                            GTK_PARAM_READWRITE));
 637
 638     g_object_class_install_property (o_class,
 639                                      PROP_SEARCH_COLUMN,
 640                                      g_param_spec_int ("search-column",
 641                                                        P_("Search Column"),
 642                                                        P_("Model column to search through during interactive search"),
 643                                                        -1,
 644                                                        G_MAXINT,
 645                                                        -1,
 646                                                        GTK_PARAM_READWRITE));
 647
 648     /**
 649      * GtkTreeView:fixed-height-mode:
 650      *
 651      * Setting the ::fixed-height-mode property to %TRUE speeds up
 652      * #GtkTreeView by assuming that all rows have the same height.
 653      * Only enable this option if all rows are the same height.
 654      * Please see gtk_tree_view_set_fixed_height_mode() for more
 655      * information on this option.
 656      *
 657      * Since: 2.4
 658      **/
 659     g_object_class_install_property (o_class,
 660                                      PROP_FIXED_HEIGHT_MODE,
 661                                      g_param_spec_boolean ("fixed-height-mode",
 662                                                            P_("Fixed Height Mode"),
 663                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 664                                                            FALSE,
 665                                                            GTK_PARAM_READWRITE));
 666
 667     /**
 668      * GtkTreeView:hover-selection:
 669      *
 670      * Enables or disables the hover selection mode of @tree_view.
 671      * Hover selection makes the selected row follow the pointer.
 672      * Currently, this works only for the selection modes
 673      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 674      *
 675      * This mode is primarily intended for treeviews in popups, e.g.
 676      * in #GtkComboBox or #GtkEntryCompletion.
 677      *
 678      * Since: 2.6
 679      */
 680     g_object_class_install_property (o_class,
 681                                      PROP_HOVER_SELECTION,
 682                                      g_param_spec_boolean ("hover-selection",
 683                                                            P_("Hover Selection"),
 684                                                            P_("Whether the selection should follow the pointer"),
 685                                                            FALSE,
 686                                                            GTK_PARAM_READWRITE));
 687
 688     /**
 689      * GtkTreeView:hover-expand:
 690      *
 691      * Enables or disables the hover expansion mode of @tree_view.
 692      * Hover expansion makes rows expand or collapse if the pointer moves
 693      * over them.
 694      *
 695      * This mode is primarily intended for treeviews in popups, e.g.
 696      * in #GtkComboBox or #GtkEntryCompletion.
 697      *
 698      * Since: 2.6
 699      */
 700     g_object_class_install_property (o_class,
 701                                      PROP_HOVER_EXPAND,
 702                                      g_param_spec_boolean ("hover-expand",
 703                                                            P_("Hover Expand"),
 704                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 705                                                            FALSE,
 706                                                            GTK_PARAM_READWRITE));
 707
 708     /**
 709      * GtkTreeView:show-expanders:
 710      *
 711      * %TRUE if the view has expanders.
 712      *
 713      * Since: 2.12
 714      */
 715     g_object_class_install_property (o_class,
 716                                      PROP_SHOW_EXPANDERS,
 717                                      g_param_spec_boolean ("show-expanders",
 718                                                            P_("Show Expanders"),
 719                                                            P_("View has expanders"),
 720                                                            TRUE,
 721                                                            GTK_PARAM_READWRITE));
 722
 723     /**
 724      * GtkTreeView:level-indentation:
 725      *
 726      * Extra indentation for each level.
 727      *
 728      * Since: 2.12
 729      */
 730     g_object_class_install_property (o_class,
 731                                      PROP_LEVEL_INDENTATION,
 732                                      g_param_spec_int ("level-indentation",
 733                                                        P_("Level Indentation"),
 734                                                        P_("Extra indentation for each level"),
 735                                                        0,
 736                                                        G_MAXINT,
 737                                                        0,
 738                                                        GTK_PARAM_READWRITE));
 739
 740     g_object_class_install_property (o_class,
 741                                      PROP_RUBBER_BANDING,
 742                                      g_param_spec_boolean ("rubber-banding",
 743                                                            P_("Rubber Banding"),
 744                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 745                                                            FALSE,
 746                                                            GTK_PARAM_READWRITE));
 747
 748     g_object_class_install_property (o_class,
 749                                      PROP_ENABLE_GRID_LINES,
 750                                      g_param_spec_enum ("enable-grid-lines",
 751                                                         P_("Enable Grid Lines"),
 752                                                         P_("Whether grid lines should be drawn in the tree view"),
 753                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 754                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 755                                                         GTK_PARAM_READWRITE));
 756
 757     g_object_class_install_property (o_class,
 758                                      PROP_ENABLE_TREE_LINES,
 759                                      g_param_spec_boolean ("enable-tree-lines",
 760                                                            P_("Enable Tree Lines"),
 761                                                            P_("Whether tree lines should be drawn in the tree view"),
 762                                                            FALSE,
 763                                                            GTK_PARAM_READWRITE));
 764
 765     g_object_class_install_property (o_class,
 766                                      PROP_TOOLTIP_COLUMN,
 767                                      g_param_spec_int ("tooltip-column",
 768                                                        P_("Tooltip Column"),
 769                                                        P_("The column in the model containing the tooltip texts for the rows"),
 770                                                        -1,
 771                                                        G_MAXINT,
 772                                                        -1,
 773                                                        GTK_PARAM_READWRITE));
 774
 775   /* Style properties */
 776 #define _TREE_VIEW_EXPANDER_SIZE 12
 777 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 778 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 779
 780   gtk_widget_class_install_style_property (widget_class,
 781                                            g_param_spec_int ("expander-size",
 782                                                              P_("Expander Size"),
 783                                                              P_("Size of the expander arrow"),
 784                                                              0,
 785                                                              G_MAXINT,
 786                                                              _TREE_VIEW_EXPANDER_SIZE,
 787                                                              GTK_PARAM_READABLE));
 788
 789   gtk_widget_class_install_style_property (widget_class,
 790                                            g_param_spec_int ("vertical-separator",
 791                                                              P_("Vertical Separator Width"),
 792                                                              P_("Vertical space between cells.  Must be an even number"),
 793                                                              0,
 794                                                              G_MAXINT,
 795                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 796                                                              GTK_PARAM_READABLE));
 797
 798   gtk_widget_class_install_style_property (widget_class,
 799                                            g_param_spec_int ("horizontal-separator",
 800                                                              P_("Horizontal Separator Width"),
 801                                                              P_("Horizontal space between cells.  Must be an even number"),
 802                                                              0,
 803                                                              G_MAXINT,
 804                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 805                                                              GTK_PARAM_READABLE));
 806
 807   gtk_widget_class_install_style_property (widget_class,
 808                                            g_param_spec_boolean ("allow-rules",
 809                                                                  P_("Allow Rules"),
 810                                                                  P_("Allow drawing of alternating color rows"),
 811                                                                  TRUE,
 812                                                                  GTK_PARAM_READABLE));
 813
 814   gtk_widget_class_install_style_property (widget_class,
 815                                            g_param_spec_boolean ("indent-expanders",
 816                                                                  P_("Indent Expanders"),
 817                                                                  P_("Make the expanders indented"),
 818                                                                  TRUE,
 819                                                                  GTK_PARAM_READABLE));
 820
 821   gtk_widget_class_install_style_property (widget_class,
 822                                            g_param_spec_boxed ("even-row-color",
 823                                                                P_("Even Row Color"),
 824                                                                P_("Color to use for even rows"),
 825                                                                GDK_TYPE_COLOR,
 826                                                                GTK_PARAM_READABLE));
 827
 828   gtk_widget_class_install_style_property (widget_class,
 829                                            g_param_spec_boxed ("odd-row-color",
 830                                                                P_("Odd Row Color"),
 831                                                                P_("Color to use for odd rows"),
 832                                                                GDK_TYPE_COLOR,
 833                                                                GTK_PARAM_READABLE));
 834
 835   gtk_widget_class_install_style_property (widget_class,
 836                                            g_param_spec_int ("grid-line-width",
 837                                                              P_("Grid line width"),
 838                                                              P_("Width, in pixels, of the tree view grid lines"),
 839                                                              0, G_MAXINT, 1,
 840                                                              GTK_PARAM_READABLE));
 841
 842   gtk_widget_class_install_style_property (widget_class,
 843                                            g_param_spec_int ("tree-line-width",
 844                                                              P_("Tree line width"),
 845                                                              P_("Width, in pixels, of the tree view lines"),
 846                                                              0, G_MAXINT, 1,
 847                                                              GTK_PARAM_READABLE));
 848
 849   gtk_widget_class_install_style_property (widget_class,
 850                                            g_param_spec_string ("grid-line-pattern",
 851                                                                 P_("Grid line pattern"),
 852                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 853                                                                 "\1\1",
 854                                                                 GTK_PARAM_READABLE));
 855
 856   gtk_widget_class_install_style_property (widget_class,
 857                                            g_param_spec_string ("tree-line-pattern",
 858                                                                 P_("Tree line pattern"),
 859                                                                 P_("Dash pattern used to draw the tree view lines"),
 860                                                                 "\1\1",
 861                                                                 GTK_PARAM_READABLE));
 862
 863   /* Signals */
 864   /**
 865    * GtkTreeView::set-scroll-adjustments
 866    * @horizontal: the horizontal #GtkAdjustment
 867    * @vertical: the vertical #GtkAdjustment
 868    *
 869    * Set the scroll adjustments for the tree view. Usually scrolled containers
 870    * like #GtkScrolledWindow will emit this signal to connect two instances
 871    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 872    */
 873   widget_class->set_scroll_adjustments_signal =
 874     g_signal_new (I_("set-scroll-adjustments"),
 875                   G_TYPE_FROM_CLASS (o_class),
 876                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 877                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 878                   NULL, NULL,
 879                   _gtk_marshal_VOID__OBJECT_OBJECT,
 880                   G_TYPE_NONE, 2,
 881                   GTK_TYPE_ADJUSTMENT,
 882                   GTK_TYPE_ADJUSTMENT);
 883
 884   /**
 885    * GtkTreeView::row-activated:
 886    * @tree_view: the object on which the signal is emitted
 887    * @path: the #GtkTreePath for the activated row
 888    * @column: the #GtkTreeViewColumn in which the activation occurred
 889    *
 890    * The "row-activated" signal is emitted when the method
 891    * gtk_tree_view_row_activated() is called or the user double clicks
 892    * a treeview row. It is also emitted when a non-editable row is
 893    * selected and one of the keys: Space, Shift+Space, Return or
 894    * Enter is pressed.
 895    *
 896    * For selection handling refer to the <link linkend="TreeWidget">tree
 897    * widget conceptual overview</link> as well as #GtkTreeSelection.
 898    */
 899   tree_view_signals[ROW_ACTIVATED] =
 900     g_signal_new (I_("row-activated"),
 901                   G_TYPE_FROM_CLASS (o_class),
 902                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 903                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 904                   NULL, NULL,
 905                   _gtk_marshal_VOID__BOXED_OBJECT,
 906                   G_TYPE_NONE, 2,
 907                   GTK_TYPE_TREE_PATH,
 908                   GTK_TYPE_TREE_VIEW_COLUMN);
 909
 910   /**
 911    * GtkTreeView::test-expand-row:
 912    * @tree_view: the object on which the signal is emitted
 913    * @iter: the tree iter of the row to expand
 914    * @path: a tree path that points to the row
 915    *
 916    * The given row is about to be expanded (show its children nodes). Use this
 917    * signal if you need to control the expandability of individual rows.
 918    *
 919    * Returns: %FALSE to allow expansion, %TRUE to reject
 920    */
 921   tree_view_signals[TEST_EXPAND_ROW] =
 922     g_signal_new (I_("test-expand-row"),
 923                   G_TYPE_FROM_CLASS (o_class),
 924                   G_SIGNAL_RUN_LAST,
 925                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 926                   _gtk_boolean_handled_accumulator, NULL,
 927                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 928                   G_TYPE_BOOLEAN, 2,
 929                   GTK_TYPE_TREE_ITER,
 930                   GTK_TYPE_TREE_PATH);
 931
 932   /**
 933    * GtkTreeView::test-collapse-row:
 934    * @tree_view: the object on which the signal is emitted
 935    * @iter: the tree iter of the row to collapse
 936    * @path: a tree path that points to the row
 937    *
 938    * The given row is about to be collapsed (hide its children nodes). Use this
 939    * signal if you need to control the collapsibility of individual rows.
 940    *
 941    * Returns: %FALSE to allow collapsing, %TRUE to reject
 942    */
 943   tree_view_signals[TEST_COLLAPSE_ROW] =
 944     g_signal_new (I_("test-collapse-row"),
 945                   G_TYPE_FROM_CLASS (o_class),
 946                   G_SIGNAL_RUN_LAST,
 947                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 948                   _gtk_boolean_handled_accumulator, NULL,
 949                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 950                   G_TYPE_BOOLEAN, 2,
 951                   GTK_TYPE_TREE_ITER,
 952                   GTK_TYPE_TREE_PATH);
 953
 954   /**
 955    * GtkTreeView::row-expanded:
 956    * @tree_view: the object on which the signal is emitted
 957    * @iter: the tree iter of the expanded row
 958    * @path: a tree path that points to the row
 959    *
 960    * The given row has been expanded (child nodes are shown).
 961    */
 962   tree_view_signals[ROW_EXPANDED] =
 963     g_signal_new (I_("row-expanded"),
 964                   G_TYPE_FROM_CLASS (o_class),
 965                   G_SIGNAL_RUN_LAST,
 966                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 967                   NULL, NULL,
 968                   _gtk_marshal_VOID__BOXED_BOXED,
 969                   G_TYPE_NONE, 2,
 970                   GTK_TYPE_TREE_ITER,
 971                   GTK_TYPE_TREE_PATH);
 972
 973   /**
 974    * GtkTreeView::row-collapsed:
 975    * @tree_view: the object on which the signal is emitted
 976    * @iter: the tree iter of the collapsed row
 977    * @path: a tree path that points to the row
 978    *
 979    * The given row has been collapsed (child nodes are hidden).
 980    */
 981   tree_view_signals[ROW_COLLAPSED] =
 982     g_signal_new (I_("row-collapsed"),
 983                   G_TYPE_FROM_CLASS (o_class),
 984                   G_SIGNAL_RUN_LAST,
 985                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 986                   NULL, NULL,
 987                   _gtk_marshal_VOID__BOXED_BOXED,
 988                   G_TYPE_NONE, 2,
 989                   GTK_TYPE_TREE_ITER,
 990                   GTK_TYPE_TREE_PATH);
 991
 992   /**
 993    * GtkTreeView::columns-changed:
 994    * @tree_view: the object on which the signal is emitted
 995    *
 996    * The number of columns of the treeview has changed.
 997    */
 998   tree_view_signals[COLUMNS_CHANGED] =
 999     g_signal_new (I_("columns-changed"),
1000                   G_TYPE_FROM_CLASS (o_class),
1001                   G_SIGNAL_RUN_LAST,
1002                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1003                   NULL, NULL,
1004                   _gtk_marshal_VOID__VOID,
1005                   G_TYPE_NONE, 0);
1006
1007   /**
1008    * GtkTreeView::cursor-changed:
1009    * @tree_view: the object on which the signal is emitted
1010    *
1011    * The position of the cursor (focused cell) has changed.
1012    */
1013   tree_view_signals[CURSOR_CHANGED] =
1014     g_signal_new (I_("cursor-changed"),
1015                   G_TYPE_FROM_CLASS (o_class),
1016                   G_SIGNAL_RUN_LAST,
1017                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1018                   NULL, NULL,
1019                   _gtk_marshal_VOID__VOID,
1020                   G_TYPE_NONE, 0);
1021
1022   tree_view_signals[MOVE_CURSOR] =
1023     g_signal_new (I_("move-cursor"),
1024                   G_TYPE_FROM_CLASS (object_class),
1025                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1026                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1027                   NULL, NULL,
1028                   _gtk_marshal_BOOLEAN__ENUM_INT,
1029                   G_TYPE_BOOLEAN, 2,
1030                   GTK_TYPE_MOVEMENT_STEP,
1031                   G_TYPE_INT);
1032
1033   tree_view_signals[SELECT_ALL] =
1034     g_signal_new (I_("select-all"),
1035                   G_TYPE_FROM_CLASS (object_class),
1036                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1037                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1038                   NULL, NULL,
1039                   _gtk_marshal_BOOLEAN__VOID,
1040                   G_TYPE_BOOLEAN, 0);
1041
1042   tree_view_signals[UNSELECT_ALL] =
1043     g_signal_new (I_("unselect-all"),
1044                   G_TYPE_FROM_CLASS (object_class),
1045                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1046                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1047                   NULL, NULL,
1048                   _gtk_marshal_BOOLEAN__VOID,
1049                   G_TYPE_BOOLEAN, 0);
1050
1051   tree_view_signals[SELECT_CURSOR_ROW] =
1052     g_signal_new (I_("select-cursor-row"),
1053                   G_TYPE_FROM_CLASS (object_class),
1054                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1055                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1056                   NULL, NULL,
1057                   _gtk_marshal_BOOLEAN__BOOLEAN,
1058                   G_TYPE_BOOLEAN, 1,
1059                   G_TYPE_BOOLEAN);
1060
1061   tree_view_signals[TOGGLE_CURSOR_ROW] =
1062     g_signal_new (I_("toggle-cursor-row"),
1063                   G_TYPE_FROM_CLASS (object_class),
1064                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1065                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1066                   NULL, NULL,
1067                   _gtk_marshal_BOOLEAN__VOID,
1068                   G_TYPE_BOOLEAN, 0);
1069
1070   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1071     g_signal_new (I_("expand-collapse-cursor-row"),
1072                   G_TYPE_FROM_CLASS (object_class),
1073                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1074                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1075                   NULL, NULL,
1076                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1077                   G_TYPE_BOOLEAN, 3,
1078                   G_TYPE_BOOLEAN,
1079                   G_TYPE_BOOLEAN,
1080                   G_TYPE_BOOLEAN);
1081
1082   tree_view_signals[SELECT_CURSOR_PARENT] =
1083     g_signal_new (I_("select-cursor-parent"),
1084                   G_TYPE_FROM_CLASS (object_class),
1085                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1086                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1087                   NULL, NULL,
1088                   _gtk_marshal_BOOLEAN__VOID,
1089                   G_TYPE_BOOLEAN, 0);
1090
1091   tree_view_signals[START_INTERACTIVE_SEARCH] =
1092     g_signal_new (I_("start-interactive-search"),
1093                   G_TYPE_FROM_CLASS (object_class),
1094                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1095                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1096                   NULL, NULL,
1097                   _gtk_marshal_BOOLEAN__VOID,
1098                   G_TYPE_BOOLEAN, 0);
1099
1100   /* Key bindings */
1101   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Up, 0, TRUE,
1102                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1103   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Up, 0, TRUE,
1104                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1105
1106   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Down, 0, TRUE,
1107                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1108   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Down, 0, TRUE,
1109                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1110
1111   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_p, GDK_CONTROL_MASK, FALSE,
1112                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1113
1114   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_n, GDK_CONTROL_MASK, FALSE,
1115                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1116
1117   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Home, 0, TRUE,
1118                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1119   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Home, 0, TRUE,
1120                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1121
1122   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_End, 0, TRUE,
1123                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1124   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_End, 0, TRUE,
1125                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1126
1127   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Up, 0, TRUE,
1128                                   GTK_MOVEMENT_PAGES, -1);
1129   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, TRUE,
1130                                   GTK_MOVEMENT_PAGES, -1);
1131
1132   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_Page_Down, 0, TRUE,
1133                                   GTK_MOVEMENT_PAGES, 1);
1134   gtk_tree_view_add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, TRUE,
1135                                   GTK_MOVEMENT_PAGES, 1);
1136
1137
1138   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, 0, "move-cursor", 2,
1139                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1140                                 G_TYPE_INT, 1);
1141
1142   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, 0, "move-cursor", 2,
1143                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1144                                 G_TYPE_INT, -1);
1145
1146   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, 0, "move-cursor", 2,
1147                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1148                                 G_TYPE_INT, 1);
1149
1150   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, 0, "move-cursor", 2,
1151                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1152                                 G_TYPE_INT, -1);
1153
1154   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1155                                 "move-cursor", 2,
1156                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1157                                 G_TYPE_INT, 1);
1158
1159   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1160                                 "move-cursor", 2,
1161                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1162                                 G_TYPE_INT, -1);
1163
1164   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1165                                 "move-cursor", 2,
1166                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1167                                 G_TYPE_INT, 1);
1168
1169   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1170                                 "move-cursor", 2,
1171                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1172                                 G_TYPE_INT, -1);
1173
1174   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1175   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1176
1177   gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK, "select-all", 0);
1178   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK, "select-all", 0);
1179
1180   gtk_binding_entry_add_signal (binding_set, GDK_KEY_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1181   gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1182
1183   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1184                                 G_TYPE_BOOLEAN, TRUE);
1185   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1186                                 G_TYPE_BOOLEAN, TRUE);
1187
1188   gtk_binding_entry_add_signal (binding_set, GDK_KEY_space, 0, "select-cursor-row", 1,
1189                                 G_TYPE_BOOLEAN, TRUE);
1190   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Space, 0, "select-cursor-row", 1,
1191                                 G_TYPE_BOOLEAN, TRUE);
1192   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0, "select-cursor-row", 1,
1193                                 G_TYPE_BOOLEAN, TRUE);
1194   gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0, "select-cursor-row", 1,
1195                                 G_TYPE_BOOLEAN, TRUE);
1196   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0, "select-cursor-row", 1,
1197                                 G_TYPE_BOOLEAN, TRUE);
1198
1199   /* expand and collapse rows */
1200   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, 0, "expand-collapse-cursor-row", 3,
1201                                 G_TYPE_BOOLEAN, TRUE,
1202                                 G_TYPE_BOOLEAN, TRUE,
1203                                 G_TYPE_BOOLEAN, FALSE);
1204
1205   gtk_binding_entry_add_signal (binding_set, GDK_KEY_asterisk, 0,
1206                                 "expand-collapse-cursor-row", 3,
1207                                 G_TYPE_BOOLEAN, TRUE,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, TRUE);
1210   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Multiply, 0,
1211                                 "expand-collapse-cursor-row", 3,
1212                                 G_TYPE_BOOLEAN, TRUE,
1213                                 G_TYPE_BOOLEAN, TRUE,
1214                                 G_TYPE_BOOLEAN, TRUE);
1215
1216   gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, 0,
1217                                 "expand-collapse-cursor-row", 3,
1218                                 G_TYPE_BOOLEAN, TRUE,
1219                                 G_TYPE_BOOLEAN, FALSE,
1220                                 G_TYPE_BOOLEAN, FALSE);
1221   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Divide, 0,
1222                                 "expand-collapse-cursor-row", 3,
1223                                 G_TYPE_BOOLEAN, TRUE,
1224                                 G_TYPE_BOOLEAN, FALSE,
1225                                 G_TYPE_BOOLEAN, FALSE);
1226
1227   /* Not doable on US keyboards */
1228   gtk_binding_entry_add_signal (binding_set, GDK_KEY_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1229                                 G_TYPE_BOOLEAN, TRUE,
1230                                 G_TYPE_BOOLEAN, TRUE,
1231                                 G_TYPE_BOOLEAN, TRUE);
1232   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, 0, "expand-collapse-cursor-row", 3,
1233                                 G_TYPE_BOOLEAN, TRUE,
1234                                 G_TYPE_BOOLEAN, TRUE,
1235                                 G_TYPE_BOOLEAN, FALSE);
1236   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1237                                 G_TYPE_BOOLEAN, TRUE,
1238                                 G_TYPE_BOOLEAN, TRUE,
1239                                 G_TYPE_BOOLEAN, TRUE);
1240   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1241                                 G_TYPE_BOOLEAN, TRUE,
1242                                 G_TYPE_BOOLEAN, TRUE,
1243                                 G_TYPE_BOOLEAN, TRUE);
1244   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right, GDK_SHIFT_MASK,
1245                                 "expand-collapse-cursor-row", 3,
1246                                 G_TYPE_BOOLEAN, FALSE,
1247                                 G_TYPE_BOOLEAN, TRUE,
1248                                 G_TYPE_BOOLEAN, TRUE);
1249   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right, GDK_SHIFT_MASK,
1250                                 "expand-collapse-cursor-row", 3,
1251                                 G_TYPE_BOOLEAN, FALSE,
1252                                 G_TYPE_BOOLEAN, TRUE,
1253                                 G_TYPE_BOOLEAN, TRUE);
1254   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Right,
1255                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1256                                 "expand-collapse-cursor-row", 3,
1257                                 G_TYPE_BOOLEAN, FALSE,
1258                                 G_TYPE_BOOLEAN, TRUE,
1259                                 G_TYPE_BOOLEAN, TRUE);
1260   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Right,
1261                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1262                                 "expand-collapse-cursor-row", 3,
1263                                 G_TYPE_BOOLEAN, FALSE,
1264                                 G_TYPE_BOOLEAN, TRUE,
1265                                 G_TYPE_BOOLEAN, TRUE);
1266
1267   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, 0, "expand-collapse-cursor-row", 3,
1268                                 G_TYPE_BOOLEAN, TRUE,
1269                                 G_TYPE_BOOLEAN, FALSE,
1270                                 G_TYPE_BOOLEAN, FALSE);
1271   gtk_binding_entry_add_signal (binding_set, GDK_KEY_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1272                                 G_TYPE_BOOLEAN, TRUE,
1273                                 G_TYPE_BOOLEAN, FALSE,
1274                                 G_TYPE_BOOLEAN, TRUE);
1275   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1276                                 G_TYPE_BOOLEAN, TRUE,
1277                                 G_TYPE_BOOLEAN, FALSE,
1278                                 G_TYPE_BOOLEAN, FALSE);
1279   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1280                                 G_TYPE_BOOLEAN, TRUE,
1281                                 G_TYPE_BOOLEAN, FALSE,
1282                                 G_TYPE_BOOLEAN, TRUE);
1283   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left, GDK_SHIFT_MASK,
1284                                 "expand-collapse-cursor-row", 3,
1285                                 G_TYPE_BOOLEAN, FALSE,
1286                                 G_TYPE_BOOLEAN, FALSE,
1287                                 G_TYPE_BOOLEAN, TRUE);
1288   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left, GDK_SHIFT_MASK,
1289                                 "expand-collapse-cursor-row", 3,
1290                                 G_TYPE_BOOLEAN, FALSE,
1291                                 G_TYPE_BOOLEAN, FALSE,
1292                                 G_TYPE_BOOLEAN, TRUE);
1293   gtk_binding_entry_add_signal (binding_set, GDK_KEY_Left,
1294                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1295                                 "expand-collapse-cursor-row", 3,
1296                                 G_TYPE_BOOLEAN, FALSE,
1297                                 G_TYPE_BOOLEAN, FALSE,
1298                                 G_TYPE_BOOLEAN, TRUE);
1299   gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Left,
1300                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1301                                 "expand-collapse-cursor-row", 3,
1302                                 G_TYPE_BOOLEAN, FALSE,
1303                                 G_TYPE_BOOLEAN, FALSE,
1304                                 G_TYPE_BOOLEAN, TRUE);
1305
1306   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, 0, "select-cursor-parent", 0);
1307   gtk_binding_entry_add_signal (binding_set, GDK_KEY_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1308
1309   gtk_binding_entry_add_signal (binding_set, GDK_KEY_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1310
1311   gtk_binding_entry_add_signal (binding_set, GDK_KEY_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1312
1313   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1314 }
1315
1316 static void
1317 gtk_tree_view_init (GtkTreeView *tree_view)
1318 {
1319   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1320
1321   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1322   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1323
1324   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1325                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1326                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1327
1328   /* We need some padding */
1329   tree_view->priv->dy = 0;
1330   tree_view->priv->cursor_offset = 0;
1331   tree_view->priv->n_columns = 0;
1332   tree_view->priv->header_height = 1;
1333   tree_view->priv->x_drag = 0;
1334   tree_view->priv->drag_pos = -1;
1335   tree_view->priv->header_has_focus = FALSE;
1336   tree_view->priv->pressed_button = -1;
1337   tree_view->priv->press_start_x = -1;
1338   tree_view->priv->press_start_y = -1;
1339   tree_view->priv->reorderable = FALSE;
1340   tree_view->priv->presize_handler_timer = 0;
1341   tree_view->priv->scroll_sync_timer = 0;
1342   tree_view->priv->fixed_height = -1;
1343   tree_view->priv->fixed_height_mode = FALSE;
1344   tree_view->priv->fixed_height_check = 0;
1345   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1346   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1347   tree_view->priv->enable_search = TRUE;
1348   tree_view->priv->search_column = -1;
1349   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1350   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1351   tree_view->priv->search_custom_entry_set = FALSE;
1352   tree_view->priv->typeselect_flush_timeout = 0;
1353   tree_view->priv->init_hadjust_value = TRUE;
1354   tree_view->priv->width = 0;
1355
1356   tree_view->priv->hover_selection = FALSE;
1357   tree_view->priv->hover_expand = FALSE;
1358
1359   tree_view->priv->level_indentation = 0;
1360
1361   tree_view->priv->rubber_banding_enable = FALSE;
1362
1363   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1364   tree_view->priv->tree_lines_enabled = FALSE;
1365
1366   tree_view->priv->tooltip_column = -1;
1367
1368   tree_view->priv->post_validation_flag = FALSE;
1369
1370   tree_view->priv->last_button_x = -1;
1371   tree_view->priv->last_button_y = -1;
1372
1373   tree_view->priv->event_last_x = -10000;
1374   tree_view->priv->event_last_y = -10000;
1375 }
1376
1377 \f
1378
1379 /* GObject Methods
1380  */
1381
1382 static void
1383 gtk_tree_view_set_property (GObject         *object,
1384                             guint            prop_id,
1385                             const GValue    *value,
1386                             GParamSpec      *pspec)
1387 {
1388   GtkTreeView *tree_view;
1389
1390   tree_view = GTK_TREE_VIEW (object);
1391
1392   switch (prop_id)
1393     {
1394     case PROP_MODEL:
1395       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1396       break;
1397     case PROP_HADJUSTMENT:
1398       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1399       break;
1400     case PROP_VADJUSTMENT:
1401       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1402       break;
1403     case PROP_HEADERS_VISIBLE:
1404       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1405       break;
1406     case PROP_HEADERS_CLICKABLE:
1407       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1408       break;
1409     case PROP_EXPANDER_COLUMN:
1410       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1411       break;
1412     case PROP_REORDERABLE:
1413       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1414       break;
1415     case PROP_RULES_HINT:
1416       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1417       break;
1418     case PROP_ENABLE_SEARCH:
1419       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1420       break;
1421     case PROP_SEARCH_COLUMN:
1422       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1423       break;
1424     case PROP_FIXED_HEIGHT_MODE:
1425       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1426       break;
1427     case PROP_HOVER_SELECTION:
1428       tree_view->priv->hover_selection = g_value_get_boolean (value);
1429       break;
1430     case PROP_HOVER_EXPAND:
1431       tree_view->priv->hover_expand = g_value_get_boolean (value);
1432       break;
1433     case PROP_SHOW_EXPANDERS:
1434       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1435       break;
1436     case PROP_LEVEL_INDENTATION:
1437       tree_view->priv->level_indentation = g_value_get_int (value);
1438       break;
1439     case PROP_RUBBER_BANDING:
1440       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1441       break;
1442     case PROP_ENABLE_GRID_LINES:
1443       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1444       break;
1445     case PROP_ENABLE_TREE_LINES:
1446       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1447       break;
1448     case PROP_TOOLTIP_COLUMN:
1449       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1450       break;
1451     default:
1452       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1453       break;
1454     }
1455 }
1456
1457 static void
1458 gtk_tree_view_get_property (GObject    *object,
1459                             guint       prop_id,
1460                             GValue     *value,
1461                             GParamSpec *pspec)
1462 {
1463   GtkTreeView *tree_view;
1464
1465   tree_view = GTK_TREE_VIEW (object);
1466
1467   switch (prop_id)
1468     {
1469     case PROP_MODEL:
1470       g_value_set_object (value, tree_view->priv->model);
1471       break;
1472     case PROP_HADJUSTMENT:
1473       g_value_set_object (value, tree_view->priv->hadjustment);
1474       break;
1475     case PROP_VADJUSTMENT:
1476       g_value_set_object (value, tree_view->priv->vadjustment);
1477       break;
1478     case PROP_HEADERS_VISIBLE:
1479       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1480       break;
1481     case PROP_HEADERS_CLICKABLE:
1482       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1483       break;
1484     case PROP_EXPANDER_COLUMN:
1485       g_value_set_object (value, tree_view->priv->expander_column);
1486       break;
1487     case PROP_REORDERABLE:
1488       g_value_set_boolean (value, tree_view->priv->reorderable);
1489       break;
1490     case PROP_RULES_HINT:
1491       g_value_set_boolean (value, tree_view->priv->has_rules);
1492       break;
1493     case PROP_ENABLE_SEARCH:
1494       g_value_set_boolean (value, tree_view->priv->enable_search);
1495       break;
1496     case PROP_SEARCH_COLUMN:
1497       g_value_set_int (value, tree_view->priv->search_column);
1498       break;
1499     case PROP_FIXED_HEIGHT_MODE:
1500       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1501       break;
1502     case PROP_HOVER_SELECTION:
1503       g_value_set_boolean (value, tree_view->priv->hover_selection);
1504       break;
1505     case PROP_HOVER_EXPAND:
1506       g_value_set_boolean (value, tree_view->priv->hover_expand);
1507       break;
1508     case PROP_SHOW_EXPANDERS:
1509       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1510       break;
1511     case PROP_LEVEL_INDENTATION:
1512       g_value_set_int (value, tree_view->priv->level_indentation);
1513       break;
1514     case PROP_RUBBER_BANDING:
1515       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1516       break;
1517     case PROP_ENABLE_GRID_LINES:
1518       g_value_set_enum (value, tree_view->priv->grid_lines);
1519       break;
1520     case PROP_ENABLE_TREE_LINES:
1521       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1522       break;
1523     case PROP_TOOLTIP_COLUMN:
1524       g_value_set_int (value, tree_view->priv->tooltip_column);
1525       break;
1526     default:
1527       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1528       break;
1529     }
1530 }
1531
1532 static void
1533 gtk_tree_view_finalize (GObject *object)
1534 {
1535   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1536 }
1537
1538
1539 static GtkBuildableIface *parent_buildable_iface;
1540
1541 static void
1542 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1543 {
1544   parent_buildable_iface = g_type_interface_peek_parent (iface);
1545   iface->add_child = gtk_tree_view_buildable_add_child;
1546   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1547 }
1548
1549 static void
1550 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1551                                    GtkBuilder  *builder,
1552                                    GObject     *child,
1553                                    const gchar *type)
1554 {
1555   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1556 }
1557
1558 static GObject *
1559 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1560                                             GtkBuilder        *builder,
1561                                             const gchar       *childname)
1562 {
1563     if (strcmp (childname, "selection") == 0)
1564       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1565
1566     return parent_buildable_iface->get_internal_child (buildable,
1567                                                        builder,
1568                                                        childname);
1569 }
1570
1571 /* GtkObject Methods
1572  */
1573
1574 static void
1575 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1576 {
1577   _gtk_rbtree_free (tree_view->priv->tree);
1578
1579   tree_view->priv->tree = NULL;
1580   tree_view->priv->button_pressed_node = NULL;
1581   tree_view->priv->button_pressed_tree = NULL;
1582   tree_view->priv->prelight_tree = NULL;
1583   tree_view->priv->prelight_node = NULL;
1584   tree_view->priv->expanded_collapsed_node = NULL;
1585   tree_view->priv->expanded_collapsed_tree = NULL;
1586 }
1587
1588 static void
1589 gtk_tree_view_destroy (GtkObject *object)
1590 {
1591   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1592   GList *list;
1593
1594   gtk_tree_view_stop_editing (tree_view, TRUE);
1595
1596   if (tree_view->priv->columns != NULL)
1597     {
1598       list = tree_view->priv->columns;
1599       while (list)
1600         {
1601           GtkTreeViewColumn *column;
1602           column = GTK_TREE_VIEW_COLUMN (list->data);
1603           list = list->next;
1604           gtk_tree_view_remove_column (tree_view, column);
1605         }
1606       tree_view->priv->columns = NULL;
1607     }
1608
1609   if (tree_view->priv->tree != NULL)
1610     {
1611       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1612
1613       gtk_tree_view_free_rbtree (tree_view);
1614     }
1615
1616   if (tree_view->priv->selection != NULL)
1617     {
1618       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1619       g_object_unref (tree_view->priv->selection);
1620       tree_view->priv->selection = NULL;
1621     }
1622
1623   if (tree_view->priv->scroll_to_path != NULL)
1624     {
1625       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1626       tree_view->priv->scroll_to_path = NULL;
1627     }
1628
1629   if (tree_view->priv->drag_dest_row != NULL)
1630     {
1631       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1632       tree_view->priv->drag_dest_row = NULL;
1633     }
1634
1635   if (tree_view->priv->top_row != NULL)
1636     {
1637       gtk_tree_row_reference_free (tree_view->priv->top_row);
1638       tree_view->priv->top_row = NULL;
1639     }
1640
1641   if (tree_view->priv->column_drop_func_data &&
1642       tree_view->priv->column_drop_func_data_destroy)
1643     {
1644       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1645       tree_view->priv->column_drop_func_data = NULL;
1646     }
1647
1648   if (tree_view->priv->destroy_count_destroy &&
1649       tree_view->priv->destroy_count_data)
1650     {
1651       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1652       tree_view->priv->destroy_count_data = NULL;
1653     }
1654
1655   gtk_tree_row_reference_free (tree_view->priv->cursor);
1656   tree_view->priv->cursor = NULL;
1657
1658   gtk_tree_row_reference_free (tree_view->priv->anchor);
1659   tree_view->priv->anchor = NULL;
1660
1661   /* destroy interactive search dialog */
1662   if (tree_view->priv->search_window)
1663     {
1664       gtk_widget_destroy (tree_view->priv->search_window);
1665       tree_view->priv->search_window = NULL;
1666       tree_view->priv->search_entry = NULL;
1667       if (tree_view->priv->typeselect_flush_timeout)
1668         {
1669           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1670           tree_view->priv->typeselect_flush_timeout = 0;
1671         }
1672     }
1673
1674   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1675     {
1676       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1677       tree_view->priv->search_user_data = NULL;
1678     }
1679
1680   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1681     {
1682       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1683       tree_view->priv->search_position_user_data = NULL;
1684     }
1685
1686   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1687     {
1688       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1689       tree_view->priv->row_separator_data = NULL;
1690     }
1691
1692   gtk_tree_view_set_model (tree_view, NULL);
1693
1694   if (tree_view->priv->hadjustment)
1695     {
1696       g_object_unref (tree_view->priv->hadjustment);
1697       tree_view->priv->hadjustment = NULL;
1698     }
1699   if (tree_view->priv->vadjustment)
1700     {
1701       g_object_unref (tree_view->priv->vadjustment);
1702       tree_view->priv->vadjustment = NULL;
1703     }
1704
1705   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1706 }
1707
1708 \f
1709
1710 /* GtkWidget Methods
1711  */
1712
1713 /* GtkWidget::map helper */
1714 static void
1715 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1716 {
1717   GList *list;
1718
1719   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1720
1721   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1722     {
1723       GtkTreeViewColumn *column;
1724
1725       for (list = tree_view->priv->columns; list; list = list->next)
1726         {
1727           column = list->data;
1728           if (gtk_widget_get_visible (column->button) &&
1729               !gtk_widget_get_mapped (column->button))
1730             gtk_widget_map (column->button);
1731         }
1732       for (list = tree_view->priv->columns; list; list = list->next)
1733         {
1734           column = list->data;
1735           if (column->visible == FALSE)
1736             continue;
1737           if (column->resizable)
1738             {
1739               gdk_window_raise (column->window);
1740               gdk_window_show (column->window);
1741             }
1742           else
1743             gdk_window_hide (column->window);
1744         }
1745       gdk_window_show (tree_view->priv->header_window);
1746     }
1747 }
1748
1749 static void
1750 gtk_tree_view_map (GtkWidget *widget)
1751 {
1752   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1753   GList *tmp_list;
1754
1755   gtk_widget_set_mapped (widget, TRUE);
1756
1757   tmp_list = tree_view->priv->children;
1758   while (tmp_list)
1759     {
1760       GtkTreeViewChild *child = tmp_list->data;
1761       tmp_list = tmp_list->next;
1762
1763       if (gtk_widget_get_visible (child->widget))
1764         {
1765           if (!gtk_widget_get_mapped (child->widget))
1766             gtk_widget_map (child->widget);
1767         }
1768     }
1769   gdk_window_show (tree_view->priv->bin_window);
1770
1771   gtk_tree_view_map_buttons (tree_view);
1772
1773   gdk_window_show (gtk_widget_get_window (widget));
1774 }
1775
1776 static void
1777 gtk_tree_view_realize (GtkWidget *widget)
1778 {
1779   GtkAllocation allocation;
1780   GtkStyle *style;
1781   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1782   GdkWindow *window;
1783   GdkWindowAttr attributes;
1784   GList *tmp_list;
1785   gint attributes_mask;
1786
1787   gtk_widget_set_realized (widget, TRUE);
1788
1789   gtk_widget_get_allocation (widget, &allocation);
1790
1791   /* Make the main, clipping window */
1792   attributes.window_type = GDK_WINDOW_CHILD;
1793   attributes.x = allocation.x;
1794   attributes.y = allocation.y;
1795   attributes.width = allocation.width;
1796   attributes.height = allocation.height;
1797   attributes.wclass = GDK_INPUT_OUTPUT;
1798   attributes.visual = gtk_widget_get_visual (widget);
1799   attributes.colormap = gtk_widget_get_colormap (widget);
1800   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1801
1802   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1803
1804   window = gdk_window_new (gtk_widget_get_parent_window (widget),
1805                            &attributes, attributes_mask);
1806   gtk_widget_set_window (widget, window);
1807   gdk_window_set_user_data (window, widget);
1808
1809   gtk_widget_get_allocation (widget, &allocation);
1810
1811   /* Make the window for the tree */
1812   attributes.x = 0;
1813   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1814   attributes.width = MAX (tree_view->priv->width, allocation.width);
1815   attributes.height = allocation.height;
1816   attributes.event_mask = (GDK_EXPOSURE_MASK |
1817                            GDK_SCROLL_MASK |
1818                            GDK_POINTER_MOTION_MASK |
1819                            GDK_ENTER_NOTIFY_MASK |
1820                            GDK_LEAVE_NOTIFY_MASK |
1821                            GDK_BUTTON_PRESS_MASK |
1822                            GDK_BUTTON_RELEASE_MASK |
1823                            gtk_widget_get_events (widget));
1824
1825   tree_view->priv->bin_window = gdk_window_new (window,
1826                                                 &attributes, attributes_mask);
1827   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1828
1829   gtk_widget_get_allocation (widget, &allocation);
1830
1831   /* Make the column header window */
1832   attributes.x = 0;
1833   attributes.y = 0;
1834   attributes.width = MAX (tree_view->priv->width, allocation.width);
1835   attributes.height = tree_view->priv->header_height;
1836   attributes.event_mask = (GDK_EXPOSURE_MASK |
1837                            GDK_SCROLL_MASK |
1838                            GDK_ENTER_NOTIFY_MASK |
1839                            GDK_LEAVE_NOTIFY_MASK |
1840                            GDK_BUTTON_PRESS_MASK |
1841                            GDK_BUTTON_RELEASE_MASK |
1842                            GDK_KEY_PRESS_MASK |
1843                            GDK_KEY_RELEASE_MASK |
1844                            gtk_widget_get_events (widget));
1845
1846   tree_view->priv->header_window = gdk_window_new (window,
1847                                                    &attributes, attributes_mask);
1848   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1849
1850   /* Add them all up. */
1851   gtk_widget_style_attach (widget);
1852   gdk_window_set_back_pixmap (window, NULL, FALSE);
1853   style = gtk_widget_get_style (widget);
1854   gdk_window_set_background (tree_view->priv->bin_window,
1855                              &style->base[gtk_widget_get_state (widget)]);
1856   gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1857
1858   tmp_list = tree_view->priv->children;
1859   while (tmp_list)
1860     {
1861       GtkTreeViewChild *child = tmp_list->data;
1862       tmp_list = tmp_list->next;
1863
1864       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1865     }
1866
1867   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1868     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1869
1870   /* Need to call those here, since they create GCs */
1871   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1872   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1873
1874   install_presize_handler (tree_view);
1875 }
1876
1877 static void
1878 gtk_tree_view_unrealize (GtkWidget *widget)
1879 {
1880   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1881   GtkTreeViewPrivate *priv = tree_view->priv;
1882   GList *list;
1883
1884   if (priv->scroll_timeout != 0)
1885     {
1886       g_source_remove (priv->scroll_timeout);
1887       priv->scroll_timeout = 0;
1888     }
1889
1890   if (priv->auto_expand_timeout != 0)
1891     {
1892       g_source_remove (priv->auto_expand_timeout);
1893       priv->auto_expand_timeout = 0;
1894     }
1895
1896   if (priv->open_dest_timeout != 0)
1897     {
1898       g_source_remove (priv->open_dest_timeout);
1899       priv->open_dest_timeout = 0;
1900     }
1901
1902   remove_expand_collapse_timeout (tree_view);
1903
1904   if (priv->presize_handler_timer != 0)
1905     {
1906       g_source_remove (priv->presize_handler_timer);
1907       priv->presize_handler_timer = 0;
1908     }
1909
1910   if (priv->validate_rows_timer != 0)
1911     {
1912       g_source_remove (priv->validate_rows_timer);
1913       priv->validate_rows_timer = 0;
1914     }
1915
1916   if (priv->scroll_sync_timer != 0)
1917     {
1918       g_source_remove (priv->scroll_sync_timer);
1919       priv->scroll_sync_timer = 0;
1920     }
1921
1922   if (priv->typeselect_flush_timeout)
1923     {
1924       g_source_remove (priv->typeselect_flush_timeout);
1925       priv->typeselect_flush_timeout = 0;
1926     }
1927
1928   for (list = priv->columns; list; list = list->next)
1929     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1930
1931   gdk_window_set_user_data (priv->bin_window, NULL);
1932   gdk_window_destroy (priv->bin_window);
1933   priv->bin_window = NULL;
1934
1935   gdk_window_set_user_data (priv->header_window, NULL);
1936   gdk_window_destroy (priv->header_window);
1937   priv->header_window = NULL;
1938
1939   if (priv->drag_window)
1940     {
1941       gdk_window_set_user_data (priv->drag_window, NULL);
1942       gdk_window_destroy (priv->drag_window);
1943       priv->drag_window = NULL;
1944     }
1945
1946   if (priv->drag_highlight_window)
1947     {
1948       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1949       gdk_window_destroy (priv->drag_highlight_window);
1950       priv->drag_highlight_window = NULL;
1951     }
1952
1953   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1954 }
1955
1956 /* GtkWidget::size_request helper */
1957 static void
1958 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1959 {
1960   GList *list;
1961
1962   tree_view->priv->header_height = 0;
1963
1964   if (tree_view->priv->model)
1965     {
1966       for (list = tree_view->priv->columns; list; list = list->next)
1967         {
1968           GtkRequisition requisition;
1969           GtkTreeViewColumn *column = list->data;
1970
1971           if (column->button == NULL)
1972             continue;
1973
1974           column = list->data;
1975
1976           gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button),
1977                                      &requisition, NULL);
1978           column->button_request = requisition.width;
1979           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1980         }
1981     }
1982 }
1983
1984
1985 /* Called only by ::size_request */
1986 static void
1987 gtk_tree_view_update_size (GtkTreeView *tree_view)
1988 {
1989   GList *list;
1990   GtkTreeViewColumn *column;
1991   gint i;
1992
1993   if (tree_view->priv->model == NULL)
1994     {
1995       tree_view->priv->width = 0;
1996       tree_view->priv->prev_width = 0;
1997       tree_view->priv->height = 0;
1998       return;
1999     }
2000
2001   tree_view->priv->prev_width = tree_view->priv->width;
2002   tree_view->priv->width = 0;
2003
2004   /* keep this in sync with size_allocate below */
2005   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2006     {
2007       gint real_requested_width = 0;
2008       column = list->data;
2009       if (!column->visible)
2010         continue;
2011
2012       if (column->use_resized_width)
2013         {
2014           real_requested_width = column->resized_width;
2015         }
2016       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2017         {
2018           real_requested_width = column->fixed_width;
2019         }
2020       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2021         {
2022           real_requested_width = MAX (column->requested_width, column->button_request);
2023         }
2024       else
2025         {
2026           real_requested_width = column->requested_width;
2027         }
2028
2029       if (column->min_width != -1)
2030         real_requested_width = MAX (real_requested_width, column->min_width);
2031       if (column->max_width != -1)
2032         real_requested_width = MIN (real_requested_width, column->max_width);
2033
2034       tree_view->priv->width += real_requested_width;
2035     }
2036
2037   if (tree_view->priv->tree == NULL)
2038     tree_view->priv->height = 0;
2039   else
2040     tree_view->priv->height = tree_view->priv->tree->root->offset;
2041 }
2042
2043 static void
2044 gtk_tree_view_size_request (GtkWidget      *widget,
2045                             GtkRequisition *requisition)
2046 {
2047   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2048   GList *tmp_list;
2049
2050   /* we validate some rows initially just to make sure we have some size.
2051    * In practice, with a lot of static lists, this should get a good width.
2052    */
2053   do_validate_rows (tree_view, FALSE);
2054   gtk_tree_view_size_request_columns (tree_view);
2055   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2056
2057   requisition->width = tree_view->priv->width;
2058   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2059
2060   tmp_list = tree_view->priv->children;
2061
2062   while (tmp_list)
2063     {
2064       GtkTreeViewChild *child = tmp_list->data;
2065       GtkRequisition child_requisition;
2066
2067       tmp_list = tmp_list->next;
2068
2069       if (gtk_widget_get_visible (child->widget))
2070         gtk_size_request_get_size (GTK_SIZE_REQUEST (child->widget),
2071                                    &child_requisition, NULL);
2072     }
2073 }
2074
2075 static int
2076 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2077 {
2078   int width = 0;
2079   GList *list;
2080   gboolean rtl;
2081
2082   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2083   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2084        list->data != tree_view->priv->expander_column;
2085        list = (rtl ? list->prev : list->next))
2086     {
2087       GtkTreeViewColumn *column = list->data;
2088
2089       width += column->width;
2090     }
2091
2092   return width;
2093 }
2094
2095 static void
2096 invalidate_column (GtkTreeView       *tree_view,
2097                    GtkTreeViewColumn *column)
2098 {
2099   gint column_offset = 0;
2100   GList *list;
2101   GtkWidget *widget = GTK_WIDGET (tree_view);
2102   gboolean rtl;
2103
2104   if (!gtk_widget_get_realized (widget))
2105     return;
2106
2107   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2108   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2109        list;
2110        list = (rtl ? list->prev : list->next))
2111     {
2112       GtkTreeViewColumn *tmpcolumn = list->data;
2113       if (tmpcolumn == column)
2114         {
2115           GtkAllocation allocation;
2116           GdkRectangle invalid_rect;
2117
2118           gtk_widget_get_allocation (widget, &allocation);
2119           invalid_rect.x = column_offset;
2120           invalid_rect.y = 0;
2121           invalid_rect.width = column->width;
2122           invalid_rect.height = allocation.height;
2123
2124           gdk_window_invalidate_rect (gtk_widget_get_window (widget), &invalid_rect, TRUE);
2125           break;
2126         }
2127
2128       column_offset += tmpcolumn->width;
2129     }
2130 }
2131
2132 static void
2133 invalidate_last_column (GtkTreeView *tree_view)
2134 {
2135   GList *last_column;
2136   gboolean rtl;
2137
2138   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2139
2140   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2141        last_column;
2142        last_column = (rtl ? last_column->next : last_column->prev))
2143     {
2144       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2145         {
2146           invalidate_column (tree_view, last_column->data);
2147           return;
2148         }
2149     }
2150 }
2151
2152 static gint
2153 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2154                                                     GtkTreeViewColumn *column)
2155 {
2156   gint real_requested_width;
2157
2158   if (column->use_resized_width)
2159     {
2160       real_requested_width = column->resized_width;
2161     }
2162   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2163     {
2164       real_requested_width = column->fixed_width;
2165     }
2166   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2167     {
2168       real_requested_width = MAX (column->requested_width, column->button_request);
2169     }
2170   else
2171     {
2172       real_requested_width = column->requested_width;
2173       if (real_requested_width < 0)
2174         real_requested_width = 0;
2175     }
2176
2177   if (column->min_width != -1)
2178     real_requested_width = MAX (real_requested_width, column->min_width);
2179   if (column->max_width != -1)
2180     real_requested_width = MIN (real_requested_width, column->max_width);
2181
2182   return real_requested_width;
2183 }
2184
2185 /* GtkWidget::size_allocate helper */
2186 static void
2187 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2188                                      gboolean  *width_changed)
2189 {
2190   GtkTreeView *tree_view;
2191   GList *list, *first_column, *last_column;
2192   GtkTreeViewColumn *column;
2193   GtkAllocation allocation;
2194   GtkAllocation widget_allocation;
2195   gint width = 0;
2196   gint extra, extra_per_column, extra_for_last;
2197   gint full_requested_width = 0;
2198   gint number_of_expand_columns = 0;
2199   gboolean column_changed = FALSE;
2200   gboolean rtl;
2201   gboolean update_expand;
2202
2203   tree_view = GTK_TREE_VIEW (widget);
2204
2205   for (last_column = g_list_last (tree_view->priv->columns);
2206        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2207        last_column = last_column->prev)
2208     ;
2209   if (last_column == NULL)
2210     return;
2211
2212   for (first_column = g_list_first (tree_view->priv->columns);
2213        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2214        first_column = first_column->next)
2215     ;
2216
2217   allocation.y = 0;
2218   allocation.height = tree_view->priv->header_height;
2219
2220   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2221
2222   /* find out how many extra space and expandable columns we have */
2223   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2224     {
2225       column = (GtkTreeViewColumn *)list->data;
2226
2227       if (!column->visible)
2228         continue;
2229
2230       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2231
2232       if (column->expand)
2233         number_of_expand_columns++;
2234     }
2235
2236   /* Only update the expand value if the width of the widget has changed,
2237    * or the number of expand columns has changed, or if there are no expand
2238    * columns, or if we didn't have an size-allocation yet after the
2239    * last validated node.
2240    */
2241   update_expand = (width_changed && *width_changed == TRUE)
2242       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2243       || number_of_expand_columns == 0
2244       || tree_view->priv->post_validation_flag == TRUE;
2245
2246   tree_view->priv->post_validation_flag = FALSE;
2247
2248   gtk_widget_get_allocation (widget, &widget_allocation);
2249   if (!update_expand)
2250     {
2251       extra = tree_view->priv->last_extra_space;
2252       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2253     }
2254   else
2255     {
2256       extra = MAX (widget_allocation.width - full_requested_width, 0);
2257       extra_for_last = 0;
2258
2259       tree_view->priv->last_extra_space = extra;
2260     }
2261
2262   if (number_of_expand_columns > 0)
2263     extra_per_column = extra/number_of_expand_columns;
2264   else
2265     extra_per_column = 0;
2266
2267   if (update_expand)
2268     {
2269       tree_view->priv->last_extra_space_per_column = extra_per_column;
2270       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2271     }
2272
2273   for (list = (rtl ? last_column : first_column);
2274        list != (rtl ? first_column->prev : last_column->next);
2275        list = (rtl ? list->prev : list->next))
2276     {
2277       gint real_requested_width = 0;
2278       gint old_width;
2279
2280       column = list->data;
2281       old_width = column->width;
2282
2283       if (!column->visible)
2284         continue;
2285
2286       /* We need to handle the dragged button specially.
2287        */
2288       if (column == tree_view->priv->drag_column)
2289         {
2290           GtkAllocation drag_allocation;
2291           gdk_drawable_get_size (tree_view->priv->drag_window,
2292                                  &(drag_allocation.width),
2293                                  &(drag_allocation.height));
2294           drag_allocation.x = 0;
2295           drag_allocation.y = 0;
2296           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2297                                     &drag_allocation);
2298           width += drag_allocation.width;
2299           continue;
2300         }
2301
2302       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2303
2304       allocation.x = width;
2305       column->width = real_requested_width;
2306
2307       if (column->expand)
2308         {
2309           if (number_of_expand_columns == 1)
2310             {
2311               /* We add the remander to the last column as
2312                * */
2313               column->width += extra;
2314             }
2315           else
2316             {
2317               column->width += extra_per_column;
2318               extra -= extra_per_column;
2319               number_of_expand_columns --;
2320             }
2321         }
2322       else if (number_of_expand_columns == 0 &&
2323                list == last_column)
2324         {
2325           column->width += extra;
2326         }
2327
2328       /* In addition to expand, the last column can get even more
2329        * extra space so all available space is filled up.
2330        */
2331       if (extra_for_last > 0 && list == last_column)
2332         column->width += extra_for_last;
2333
2334       g_object_notify (G_OBJECT (column), "width");
2335
2336       allocation.width = column->width;
2337       width += column->width;
2338
2339       if (column->width > old_width)
2340         column_changed = TRUE;
2341
2342       gtk_widget_size_allocate (column->button, &allocation);
2343
2344       if (column->window)
2345         gdk_window_move_resize (column->window,
2346                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2347                                 allocation.y,
2348                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2349     }
2350
2351   /* We change the width here.  The user might have been resizing columns,
2352    * so the total width of the tree view changes.
2353    */
2354   tree_view->priv->width = width;
2355   if (width_changed)
2356     *width_changed = TRUE;
2357
2358   if (column_changed)
2359     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2360 }
2361
2362
2363 static void
2364 gtk_tree_view_size_allocate (GtkWidget     *widget,
2365                              GtkAllocation *allocation)
2366 {
2367   GtkAllocation widget_allocation;
2368   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2369   GList *tmp_list;
2370   gboolean width_changed = FALSE;
2371   gint old_width;
2372
2373   gtk_widget_get_allocation (widget, &widget_allocation);
2374   old_width = widget_allocation.width;
2375   if (allocation->width != widget_allocation.width)
2376     width_changed = TRUE;
2377
2378   gtk_widget_set_allocation (widget, allocation);
2379
2380   tmp_list = tree_view->priv->children;
2381
2382   while (tmp_list)
2383     {
2384       GtkAllocation allocation;
2385
2386       GtkTreeViewChild *child = tmp_list->data;
2387       tmp_list = tmp_list->next;
2388
2389       /* totally ignore our child's requisition */
2390       allocation.x = child->x;
2391       allocation.y = child->y;
2392       allocation.width = child->width;
2393       allocation.height = child->height;
2394       gtk_widget_size_allocate (child->widget, &allocation);
2395     }
2396
2397   /* We size-allocate the columns first because the width of the
2398    * tree view (used in updating the adjustments below) might change.
2399    */
2400   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2401
2402   tree_view->priv->hadjustment->page_size = allocation->width;
2403   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2404   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2405   tree_view->priv->hadjustment->lower = 0;
2406   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2407
2408   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2409     {
2410       if (allocation->width < tree_view->priv->width)
2411         {
2412           if (tree_view->priv->init_hadjust_value)
2413             {
2414               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2415               tree_view->priv->init_hadjust_value = FALSE;
2416             }
2417           else if (allocation->width != old_width)
2418             {
2419               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2420             }
2421           else
2422             tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value), 0, tree_view->priv->width - allocation->width);
2423         }
2424       else
2425         {
2426           tree_view->priv->hadjustment->value = 0;
2427           tree_view->priv->init_hadjust_value = TRUE;
2428         }
2429     }
2430   else
2431     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2432       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2433
2434   gtk_adjustment_changed (tree_view->priv->hadjustment);
2435
2436   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2437   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2438   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2439   tree_view->priv->vadjustment->lower = 0;
2440   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2441
2442   gtk_adjustment_changed (tree_view->priv->vadjustment);
2443
2444   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2445   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2446     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2447   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2448     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2449                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2450   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2451     gtk_tree_view_top_row_to_dy (tree_view);
2452   else
2453     gtk_tree_view_dy_to_top_row (tree_view);
2454
2455   if (gtk_widget_get_realized (widget))
2456     {
2457       gdk_window_move_resize (gtk_widget_get_window (widget),
2458                               allocation->x, allocation->y,
2459                               allocation->width, allocation->height);
2460       gdk_window_move_resize (tree_view->priv->header_window,
2461                               - (gint) tree_view->priv->hadjustment->value,
2462                               0,
2463                               MAX (tree_view->priv->width, allocation->width),
2464                               tree_view->priv->header_height);
2465       gdk_window_move_resize (tree_view->priv->bin_window,
2466                               - (gint) tree_view->priv->hadjustment->value,
2467                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2468                               MAX (tree_view->priv->width, allocation->width),
2469                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2470     }
2471
2472   if (tree_view->priv->tree == NULL)
2473     invalidate_empty_focus (tree_view);
2474
2475   if (gtk_widget_get_realized (widget))
2476     {
2477       gboolean has_expand_column = FALSE;
2478       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2479         {
2480           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2481             {
2482               has_expand_column = TRUE;
2483               break;
2484             }
2485         }
2486
2487       if (width_changed && tree_view->priv->expander_column)
2488         {
2489           /* Might seem awkward, but is the best heuristic I could come up
2490            * with.  Only if the width of the columns before the expander
2491            * changes, we will update the prelight status.  It is this
2492            * width that makes the expander move vertically.  Always updating
2493            * prelight status causes trouble with hover selections.
2494            */
2495           gint width_before_expander;
2496
2497           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2498
2499           if (tree_view->priv->prev_width_before_expander
2500               != width_before_expander)
2501               update_prelight (tree_view,
2502                                tree_view->priv->event_last_x,
2503                                tree_view->priv->event_last_y);
2504
2505           tree_view->priv->prev_width_before_expander = width_before_expander;
2506         }
2507
2508       /* This little hack only works if we have an LTR locale, and no column has the  */
2509       if (width_changed)
2510         {
2511           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2512               ! has_expand_column)
2513             invalidate_last_column (tree_view);
2514           else
2515             gtk_widget_queue_draw (widget);
2516         }
2517     }
2518 }
2519
2520 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2521 static void
2522 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2523 {
2524   GtkWidget *widget = GTK_WIDGET (tree_view);
2525
2526   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2527     gtk_widget_grab_focus (widget);
2528   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2529 }
2530
2531 static inline gboolean
2532 row_is_separator (GtkTreeView *tree_view,
2533                   GtkTreeIter *iter,
2534                   GtkTreePath *path)
2535 {
2536   gboolean is_separator = FALSE;
2537
2538   if (tree_view->priv->row_separator_func)
2539     {
2540       GtkTreeIter tmpiter;
2541
2542       if (iter)
2543         tmpiter = *iter;
2544       else
2545         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2546
2547       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2548                                                           &tmpiter,
2549                                                           tree_view->priv->row_separator_data);
2550     }
2551
2552   return is_separator;
2553 }
2554
2555 static gboolean
2556 gtk_tree_view_button_press (GtkWidget      *widget,
2557                             GdkEventButton *event)
2558 {
2559   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2560   GList *list;
2561   GtkTreeViewColumn *column = NULL;
2562   gint i;
2563   GdkRectangle background_area;
2564   GdkRectangle cell_area;
2565   gint vertical_separator;
2566   gint horizontal_separator;
2567   gboolean path_is_selectable;
2568   gboolean rtl;
2569
2570   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2571   gtk_tree_view_stop_editing (tree_view, FALSE);
2572   gtk_widget_style_get (widget,
2573                         "vertical-separator", &vertical_separator,
2574                         "horizontal-separator", &horizontal_separator,
2575                         NULL);
2576
2577
2578   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2579    * we're done handling the button press.
2580    */
2581
2582   if (event->window == tree_view->priv->bin_window)
2583     {
2584       GtkRBNode *node;
2585       GtkRBTree *tree;
2586       GtkTreePath *path;
2587       gchar *path_string;
2588       gint depth;
2589       gint new_y;
2590       gint y_offset;
2591       gint dval;
2592       gint pre_val, aft_val;
2593       GtkTreeViewColumn *column = NULL;
2594       GtkCellRenderer *focus_cell = NULL;
2595       gint column_handled_click = FALSE;
2596       gboolean row_double_click = FALSE;
2597       gboolean rtl;
2598       gboolean node_selected;
2599
2600       /* Empty tree? */
2601       if (tree_view->priv->tree == NULL)
2602         {
2603           grab_focus_and_unset_draw_keyfocus (tree_view);
2604           return TRUE;
2605         }
2606
2607       /* are we in an arrow? */
2608       if (tree_view->priv->prelight_node &&
2609           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2610           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2611         {
2612           if (event->button == 1)
2613             {
2614               gtk_grab_add (widget);
2615               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2616               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2617               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2618                                         tree_view->priv->prelight_tree,
2619                                         tree_view->priv->prelight_node,
2620                                         event->x,
2621                                         event->y);
2622             }
2623
2624           grab_focus_and_unset_draw_keyfocus (tree_view);
2625           return TRUE;
2626         }
2627
2628       /* find the node that was clicked */
2629       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2630       if (new_y < 0)
2631         new_y = 0;
2632       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2633
2634       if (node == NULL)
2635         {
2636           /* We clicked in dead space */
2637           grab_focus_and_unset_draw_keyfocus (tree_view);
2638           return TRUE;
2639         }
2640
2641       /* Get the path and the node */
2642       path = _gtk_tree_view_find_path (tree_view, tree, node);
2643       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2644
2645       if (!path_is_selectable)
2646         {
2647           gtk_tree_path_free (path);
2648           grab_focus_and_unset_draw_keyfocus (tree_view);
2649           return TRUE;
2650         }
2651
2652       depth = gtk_tree_path_get_depth (path);
2653       background_area.y = y_offset + event->y;
2654       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2655       background_area.x = 0;
2656
2657
2658       /* Let the column have a chance at selecting it. */
2659       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2660       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2661            list; list = (rtl ? list->prev : list->next))
2662         {
2663           GtkTreeViewColumn *candidate = list->data;
2664
2665           if (!candidate->visible)
2666             continue;
2667
2668           background_area.width = candidate->width;
2669           if ((background_area.x > (gint) event->x) ||
2670               (background_area.x + background_area.width <= (gint) event->x))
2671             {
2672               background_area.x += background_area.width;
2673               continue;
2674             }
2675
2676           /* we found the focus column */
2677           column = candidate;
2678           cell_area = background_area;
2679           cell_area.width -= horizontal_separator;
2680           cell_area.height -= vertical_separator;
2681           cell_area.x += horizontal_separator/2;
2682           cell_area.y += vertical_separator/2;
2683           if (gtk_tree_view_is_expander_column (tree_view, column))
2684             {
2685               if (!rtl)
2686                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2687               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2688
2689               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2690                 {
2691                   if (!rtl)
2692                     cell_area.x += depth * tree_view->priv->expander_size;
2693                   cell_area.width -= depth * tree_view->priv->expander_size;
2694                 }
2695             }
2696           break;
2697         }
2698
2699       if (column == NULL)
2700         {
2701           gtk_tree_path_free (path);
2702           grab_focus_and_unset_draw_keyfocus (tree_view);
2703           return FALSE;
2704         }
2705
2706       tree_view->priv->focus_column = column;
2707
2708       /* decide if we edit */
2709       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2710           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2711         {
2712           GtkTreePath *anchor;
2713           GtkTreeIter iter;
2714
2715           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2716           gtk_tree_view_column_cell_set_cell_data (column,
2717                                                    tree_view->priv->model,
2718                                                    &iter,
2719                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2720                                                    node->children?TRUE:FALSE);
2721
2722           if (tree_view->priv->anchor)
2723             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2724           else
2725             anchor = NULL;
2726
2727           if ((anchor && !gtk_tree_path_compare (anchor, path))
2728               || !_gtk_tree_view_column_has_editable_cell (column))
2729             {
2730               GtkCellEditable *cell_editable = NULL;
2731
2732               /* FIXME: get the right flags */
2733               guint flags = 0;
2734
2735               path_string = gtk_tree_path_to_string (path);
2736
2737               if (_gtk_tree_view_column_cell_event (column,
2738                                                     &cell_editable,
2739                                                     (GdkEvent *)event,
2740                                                     path_string,
2741                                                     &background_area,
2742                                                     &cell_area, flags))
2743                 {
2744                   if (cell_editable != NULL)
2745                     {
2746                       gint left, right;
2747                       GdkRectangle area;
2748
2749                       area = cell_area;
2750                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2751
2752                       area.x += left;
2753                       area.width -= right + left;
2754
2755                       gtk_tree_view_real_start_editing (tree_view,
2756                                                         column,
2757                                                         path,
2758                                                         cell_editable,
2759                                                         &area,
2760                                                         (GdkEvent *)event,
2761                                                         flags);
2762                       g_free (path_string);
2763                       gtk_tree_path_free (path);
2764                       gtk_tree_path_free (anchor);
2765                       return TRUE;
2766                     }
2767                   column_handled_click = TRUE;
2768                 }
2769               g_free (path_string);
2770             }
2771           if (anchor)
2772             gtk_tree_path_free (anchor);
2773         }
2774
2775       /* select */
2776       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2777       pre_val = tree_view->priv->vadjustment->value;
2778
2779       /* we only handle selection modifications on the first button press
2780        */
2781       if (event->type == GDK_BUTTON_PRESS)
2782         {
2783           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2784             tree_view->priv->ctrl_pressed = TRUE;
2785           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2786             tree_view->priv->shift_pressed = TRUE;
2787
2788           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2789           if (focus_cell)
2790             gtk_tree_view_column_focus_cell (column, focus_cell);
2791
2792           if (event->state & GDK_CONTROL_MASK)
2793             {
2794               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2795               gtk_tree_view_real_toggle_cursor_row (tree_view);
2796             }
2797           else if (event->state & GDK_SHIFT_MASK)
2798             {
2799               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2800               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2801             }
2802           else
2803             {
2804               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2805             }
2806
2807           tree_view->priv->ctrl_pressed = FALSE;
2808           tree_view->priv->shift_pressed = FALSE;
2809         }
2810
2811       /* the treeview may have been scrolled because of _set_cursor,
2812        * correct here
2813        */
2814
2815       aft_val = tree_view->priv->vadjustment->value;
2816       dval = pre_val - aft_val;
2817
2818       cell_area.y += dval;
2819       background_area.y += dval;
2820
2821       /* Save press to possibly begin a drag
2822        */
2823       if (!column_handled_click &&
2824           !tree_view->priv->in_grab &&
2825           tree_view->priv->pressed_button < 0)
2826         {
2827           tree_view->priv->pressed_button = event->button;
2828           tree_view->priv->press_start_x = event->x;
2829           tree_view->priv->press_start_y = event->y;
2830
2831           if (tree_view->priv->rubber_banding_enable
2832               && !node_selected
2833               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2834             {
2835               tree_view->priv->press_start_y += tree_view->priv->dy;
2836               tree_view->priv->rubber_band_x = event->x;
2837               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2838               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2839
2840               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2841                 tree_view->priv->rubber_band_ctrl = TRUE;
2842               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2843                 tree_view->priv->rubber_band_shift = TRUE;
2844             }
2845         }
2846
2847       /* Test if a double click happened on the same row. */
2848       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2849         {
2850           int double_click_time, double_click_distance;
2851
2852           g_object_get (gtk_settings_get_default (),
2853                         "gtk-double-click-time", &double_click_time,
2854                         "gtk-double-click-distance", &double_click_distance,
2855                         NULL);
2856
2857           /* Same conditions as _gdk_event_button_generate */
2858           if (tree_view->priv->last_button_x != -1 &&
2859               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2860               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2861               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2862             {
2863               /* We do no longer compare paths of this row and the
2864                * row clicked previously.  We use the double click
2865                * distance to decide whether this is a valid click,
2866                * allowing the mouse to slightly move over another row.
2867                */
2868               row_double_click = TRUE;
2869
2870               tree_view->priv->last_button_time = 0;
2871               tree_view->priv->last_button_x = -1;
2872               tree_view->priv->last_button_y = -1;
2873             }
2874           else
2875             {
2876               tree_view->priv->last_button_time = event->time;
2877               tree_view->priv->last_button_x = event->x;
2878               tree_view->priv->last_button_y = event->y;
2879             }
2880         }
2881
2882       if (row_double_click)
2883         {
2884           gtk_grab_remove (widget);
2885           gtk_tree_view_row_activated (tree_view, path, column);
2886
2887           if (tree_view->priv->pressed_button == event->button)
2888             tree_view->priv->pressed_button = -1;
2889         }
2890
2891       gtk_tree_path_free (path);
2892
2893       /* If we activated the row through a double click we don't want to grab
2894        * focus back, as moving focus to another widget is pretty common.
2895        */
2896       if (!row_double_click)
2897         grab_focus_and_unset_draw_keyfocus (tree_view);
2898
2899       return TRUE;
2900     }
2901
2902   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2903    */
2904   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2905     {
2906       column = list->data;
2907       if (event->window == column->window &&
2908           column->resizable &&
2909           column->window)
2910         {
2911           GtkAllocation button_allocation;
2912           gpointer drag_data;
2913
2914           if (event->type == GDK_2BUTTON_PRESS &&
2915               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2916             {
2917               column->use_resized_width = FALSE;
2918               _gtk_tree_view_column_autosize (tree_view, column);
2919               return TRUE;
2920             }
2921
2922           if (gdk_pointer_grab (column->window, FALSE,
2923                                 GDK_POINTER_MOTION_HINT_MASK |
2924                                 GDK_BUTTON1_MOTION_MASK |
2925                                 GDK_BUTTON_RELEASE_MASK,
2926                                 NULL, NULL, event->time))
2927             return FALSE;
2928
2929           gtk_grab_add (widget);
2930           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2931           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2932
2933           /* block attached dnd signal handler */
2934           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2935           if (drag_data)
2936             g_signal_handlers_block_matched (widget,
2937                                              G_SIGNAL_MATCH_DATA,
2938                                              0, 0, NULL, NULL,
2939                                              drag_data);
2940
2941           gtk_widget_get_allocation (column->button, &button_allocation);
2942           tree_view->priv->drag_pos = i;
2943           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
2944
2945           if (!gtk_widget_has_focus (widget))
2946             gtk_widget_grab_focus (widget);
2947
2948           return TRUE;
2949         }
2950     }
2951   return FALSE;
2952 }
2953
2954 /* GtkWidget::button_release_event helper */
2955 static gboolean
2956 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2957                                           GdkEventButton *event)
2958 {
2959   GtkTreeView *tree_view;
2960   GList *l;
2961   gboolean rtl;
2962
2963   tree_view = GTK_TREE_VIEW (widget);
2964
2965   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2966   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2967   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2968
2969   /* Move the button back */
2970   g_object_ref (tree_view->priv->drag_column->button);
2971   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2972   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2973   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2974   g_object_unref (tree_view->priv->drag_column->button);
2975   gtk_widget_queue_resize (widget);
2976   if (tree_view->priv->drag_column->resizable)
2977     {
2978       gdk_window_raise (tree_view->priv->drag_column->window);
2979       gdk_window_show (tree_view->priv->drag_column->window);
2980     }
2981   else
2982     gdk_window_hide (tree_view->priv->drag_column->window);
2983
2984   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2985
2986   if (rtl)
2987     {
2988       if (tree_view->priv->cur_reorder &&
2989           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2990         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2991                                          tree_view->priv->cur_reorder->right_column);
2992     }
2993   else
2994     {
2995       if (tree_view->priv->cur_reorder &&
2996           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2997         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2998                                          tree_view->priv->cur_reorder->left_column);
2999     }
3000   tree_view->priv->drag_column = NULL;
3001   gdk_window_hide (tree_view->priv->drag_window);
3002
3003   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3004     g_slice_free (GtkTreeViewColumnReorder, l->data);
3005   g_list_free (tree_view->priv->column_drag_info);
3006   tree_view->priv->column_drag_info = NULL;
3007   tree_view->priv->cur_reorder = NULL;
3008
3009   if (tree_view->priv->drag_highlight_window)
3010     gdk_window_hide (tree_view->priv->drag_highlight_window);
3011
3012   /* Reset our flags */
3013   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3014   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
3015
3016   return TRUE;
3017 }
3018
3019 /* GtkWidget::button_release_event helper */
3020 static gboolean
3021 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3022                                             GdkEventButton *event)
3023 {
3024   GtkTreeView *tree_view;
3025   gpointer drag_data;
3026
3027   tree_view = GTK_TREE_VIEW (widget);
3028
3029   tree_view->priv->drag_pos = -1;
3030
3031   /* unblock attached dnd signal handler */
3032   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3033   if (drag_data)
3034     g_signal_handlers_unblock_matched (widget,
3035                                        G_SIGNAL_MATCH_DATA,
3036                                        0, 0, NULL, NULL,
3037                                        drag_data);
3038
3039   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3040   gtk_grab_remove (widget);
3041   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3042                               event->time);
3043   return TRUE;
3044 }
3045
3046 static gboolean
3047 gtk_tree_view_button_release (GtkWidget      *widget,
3048                               GdkEventButton *event)
3049 {
3050   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3051
3052   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3053     return gtk_tree_view_button_release_drag_column (widget, event);
3054
3055   if (tree_view->priv->rubber_band_status)
3056     gtk_tree_view_stop_rubber_band (tree_view);
3057
3058   if (tree_view->priv->pressed_button == event->button)
3059     tree_view->priv->pressed_button = -1;
3060
3061   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3062     return gtk_tree_view_button_release_column_resize (widget, event);
3063
3064   if (tree_view->priv->button_pressed_node == NULL)
3065     return FALSE;
3066
3067   if (event->button == 1)
3068     {
3069       gtk_grab_remove (widget);
3070       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3071           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3072         {
3073           GtkTreePath *path = NULL;
3074
3075           path = _gtk_tree_view_find_path (tree_view,
3076                                            tree_view->priv->button_pressed_tree,
3077                                            tree_view->priv->button_pressed_node);
3078           /* Actually activate the node */
3079           if (tree_view->priv->button_pressed_node->children == NULL)
3080             gtk_tree_view_real_expand_row (tree_view, path,
3081                                            tree_view->priv->button_pressed_tree,
3082                                            tree_view->priv->button_pressed_node,
3083                                            FALSE, TRUE);
3084           else
3085             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3086                                              tree_view->priv->button_pressed_tree,
3087                                              tree_view->priv->button_pressed_node, TRUE);
3088           gtk_tree_path_free (path);
3089         }
3090
3091       tree_view->priv->button_pressed_tree = NULL;
3092       tree_view->priv->button_pressed_node = NULL;
3093     }
3094
3095   return TRUE;
3096 }
3097
3098 static gboolean
3099 gtk_tree_view_grab_broken (GtkWidget          *widget,
3100                            GdkEventGrabBroken *event)
3101 {
3102   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3103
3104   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3105     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3106
3107   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3108     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3109
3110   return TRUE;
3111 }
3112
3113 #if 0
3114 static gboolean
3115 gtk_tree_view_configure (GtkWidget *widget,
3116                          GdkEventConfigure *event)
3117 {
3118   GtkTreeView *tree_view;
3119
3120   tree_view = GTK_TREE_VIEW (widget);
3121   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3122
3123   return FALSE;
3124 }
3125 #endif
3126
3127 /* GtkWidget::motion_event function set.
3128  */
3129
3130 static gboolean
3131 coords_are_over_arrow (GtkTreeView *tree_view,
3132                        GtkRBTree   *tree,
3133                        GtkRBNode   *node,
3134                        /* these are in bin window coords */
3135                        gint         x,
3136                        gint         y)
3137 {
3138   GdkRectangle arrow;
3139   gint x2;
3140
3141   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3142     return FALSE;
3143
3144   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3145     return FALSE;
3146
3147   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3148
3149   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3150
3151   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3152
3153   arrow.width = x2 - arrow.x;
3154
3155   return (x >= arrow.x &&
3156           x < (arrow.x + arrow.width) &&
3157           y >= arrow.y &&
3158           y < (arrow.y + arrow.height));
3159 }
3160
3161 static gboolean
3162 auto_expand_timeout (gpointer data)
3163 {
3164   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3165   GtkTreePath *path;
3166
3167   if (tree_view->priv->prelight_node)
3168     {
3169       path = _gtk_tree_view_find_path (tree_view,
3170                                        tree_view->priv->prelight_tree,
3171                                        tree_view->priv->prelight_node);
3172
3173       if (tree_view->priv->prelight_node->children)
3174         gtk_tree_view_collapse_row (tree_view, path);
3175       else
3176         gtk_tree_view_expand_row (tree_view, path, FALSE);
3177
3178       gtk_tree_path_free (path);
3179     }
3180
3181   tree_view->priv->auto_expand_timeout = 0;
3182
3183   return FALSE;
3184 }
3185
3186 static void
3187 remove_auto_expand_timeout (GtkTreeView *tree_view)
3188 {
3189   if (tree_view->priv->auto_expand_timeout != 0)
3190     {
3191       g_source_remove (tree_view->priv->auto_expand_timeout);
3192       tree_view->priv->auto_expand_timeout = 0;
3193     }
3194 }
3195
3196 static void
3197 do_prelight (GtkTreeView *tree_view,
3198              GtkRBTree   *tree,
3199              GtkRBNode   *node,
3200              /* these are in bin_window coords */
3201              gint         x,
3202              gint         y)
3203 {
3204   if (tree_view->priv->prelight_tree == tree &&
3205       tree_view->priv->prelight_node == node)
3206     {
3207       /*  We are still on the same node,
3208           but we might need to take care of the arrow  */
3209
3210       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3211         {
3212           gboolean over_arrow;
3213           gboolean flag_set;
3214
3215           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3216           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3217                                              GTK_TREE_VIEW_ARROW_PRELIT);
3218
3219           if (over_arrow != flag_set)
3220             {
3221               if (over_arrow)
3222                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3223                                         GTK_TREE_VIEW_ARROW_PRELIT);
3224               else
3225                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3226                                           GTK_TREE_VIEW_ARROW_PRELIT);
3227
3228               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3229             }
3230         }
3231
3232       return;
3233     }
3234
3235   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3236     {
3237       /*  Unprelight the old node and arrow  */
3238
3239       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3240                              GTK_RBNODE_IS_PRELIT);
3241
3242       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3243           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3244         {
3245           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3246
3247           gtk_tree_view_draw_arrow (tree_view,
3248                                     tree_view->priv->prelight_tree,
3249                                     tree_view->priv->prelight_node,
3250                                     x,
3251                                     y);
3252         }
3253
3254       _gtk_tree_view_queue_draw_node (tree_view,
3255                                       tree_view->priv->prelight_tree,
3256                                       tree_view->priv->prelight_node,
3257                                       NULL);
3258     }
3259
3260
3261   if (tree_view->priv->hover_expand)
3262     remove_auto_expand_timeout (tree_view);
3263
3264   /*  Set the new prelight values  */
3265   tree_view->priv->prelight_node = node;
3266   tree_view->priv->prelight_tree = tree;
3267
3268   if (!node || !tree)
3269     return;
3270
3271   /*  Prelight the new node and arrow  */
3272
3273   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3274       && coords_are_over_arrow (tree_view, tree, node, x, y))
3275     {
3276       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3277
3278       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3279     }
3280
3281   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3282
3283   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3284
3285   if (tree_view->priv->hover_expand)
3286     {
3287       tree_view->priv->auto_expand_timeout =
3288         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3289     }
3290 }
3291
3292 static void
3293 prelight_or_select (GtkTreeView *tree_view,
3294                     GtkRBTree   *tree,
3295                     GtkRBNode   *node,
3296                     /* these are in bin_window coords */
3297                     gint         x,
3298                     gint         y)
3299 {
3300   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3301
3302   if (tree_view->priv->hover_selection &&
3303       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3304       !(tree_view->priv->edited_column &&
3305         tree_view->priv->edited_column->editable_widget))
3306     {
3307       if (node)
3308         {
3309           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3310             {
3311               GtkTreePath *path;
3312
3313               path = _gtk_tree_view_find_path (tree_view, tree, node);
3314               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3315               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3316                 {
3317                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3318                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3319                 }
3320               gtk_tree_path_free (path);
3321             }
3322         }
3323
3324       else if (mode == GTK_SELECTION_SINGLE)
3325         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3326     }
3327
3328     do_prelight (tree_view, tree, node, x, y);
3329 }
3330
3331 static void
3332 ensure_unprelighted (GtkTreeView *tree_view)
3333 {
3334   do_prelight (tree_view,
3335                NULL, NULL,
3336                -1000, -1000); /* coords not possibly over an arrow */
3337
3338   g_assert (tree_view->priv->prelight_node == NULL);
3339 }
3340
3341 static void
3342 update_prelight (GtkTreeView *tree_view,
3343                  gint         x,
3344                  gint         y)
3345 {
3346   int new_y;
3347   GtkRBTree *tree;
3348   GtkRBNode *node;
3349
3350   if (tree_view->priv->tree == NULL)
3351     return;
3352
3353   if (x == -10000)
3354     {
3355       ensure_unprelighted (tree_view);
3356       return;
3357     }
3358
3359   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3360   if (new_y < 0)
3361     new_y = 0;
3362
3363   _gtk_rbtree_find_offset (tree_view->priv->tree,
3364                            new_y, &tree, &node);
3365
3366   if (node)
3367     prelight_or_select (tree_view, tree, node, x, y);
3368 }
3369
3370
3371
3372
3373 /* Our motion arrow is either a box (in the case of the original spot)
3374  * or an arrow.  It is expander_size wide.
3375  */
3376 /*
3377  * 11111111111111
3378  * 01111111111110
3379  * 00111111111100
3380  * 00011111111000
3381  * 00001111110000
3382  * 00000111100000
3383  * 00000111100000
3384  * 00000111100000
3385  * ~ ~ ~ ~ ~ ~ ~
3386  * 00000111100000
3387  * 00000111100000
3388  * 00000111100000
3389  * 00001111110000
3390  * 00011111111000
3391  * 00111111111100
3392  * 01111111111110
3393  * 11111111111111
3394  */
3395
3396 static void
3397 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3398 {
3399   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3400   GtkWidget *widget = GTK_WIDGET (tree_view);
3401   cairo_surface_t *mask_image;
3402   cairo_region_t *mask_region;
3403   gint x;
3404   gint y;
3405   gint width;
3406   gint height;
3407   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3408   GdkWindowAttr attributes;
3409   guint attributes_mask;
3410   cairo_t *cr;
3411
3412   if (!reorder ||
3413       reorder->left_column == tree_view->priv->drag_column ||
3414       reorder->right_column == tree_view->priv->drag_column)
3415     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3416   else if (reorder->left_column || reorder->right_column)
3417     {
3418       GtkAllocation left_allocation, right_allocation;
3419       GdkRectangle visible_rect;
3420
3421       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3422       if (reorder->left_column)
3423         {
3424           gtk_widget_get_allocation (reorder->left_column->button, &left_allocation);
3425           x = left_allocation.x + left_allocation.width;
3426         }
3427       else
3428         {
3429           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
3430           x = right_allocation.x;
3431         }
3432
3433       if (x < visible_rect.x)
3434         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3435       else if (x > visible_rect.x + visible_rect.width)
3436         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3437       else
3438         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3439     }
3440
3441   /* We want to draw the rectangle over the initial location. */
3442   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3443     {
3444       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3445         {
3446           GtkAllocation drag_allocation;
3447
3448           if (tree_view->priv->drag_highlight_window)
3449             {
3450               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3451                                         NULL);
3452               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3453             }
3454
3455           attributes.window_type = GDK_WINDOW_CHILD;
3456           attributes.wclass = GDK_INPUT_OUTPUT;
3457           attributes.x = tree_view->priv->drag_column_x;
3458           attributes.y = 0;
3459           gtk_widget_get_allocation (tree_view->priv->drag_column->button, &drag_allocation);
3460           width = attributes.width = drag_allocation.width;
3461           height = attributes.height = drag_allocation.height;
3462           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3463           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3464           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3465           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3466           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3467           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3468
3469           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3470           cr = cairo_create (mask_image);
3471
3472           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3473           cairo_stroke (cr);
3474           cairo_destroy (cr);
3475
3476           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3477           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3478                                            mask_region, 0, 0);
3479
3480           cairo_region_destroy (mask_region);
3481           cairo_surface_destroy (mask_image);
3482
3483           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3484         }
3485     }
3486   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3487     {
3488       GtkAllocation button_allocation;
3489
3490       width = tree_view->priv->expander_size;
3491
3492       /* Get x, y, width, height of arrow */
3493       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3494       if (reorder->left_column)
3495         {
3496           gtk_widget_get_allocation (reorder->left_column->button, &button_allocation);
3497           x += button_allocation.x + button_allocation.width - width/2;
3498           height = button_allocation.height;
3499         }
3500       else
3501         {
3502           gtk_widget_get_allocation (reorder->right_column->button, &button_allocation);
3503           x += button_allocation.x - width/2;
3504           height = button_allocation.height;
3505         }
3506       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3507       height += tree_view->priv->expander_size;
3508
3509       /* Create the new window */
3510       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3511         {
3512           if (tree_view->priv->drag_highlight_window)
3513             {
3514               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3515                                         NULL);
3516               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3517             }
3518
3519           attributes.window_type = GDK_WINDOW_TEMP;
3520           attributes.wclass = GDK_INPUT_OUTPUT;
3521           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3522           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3523           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3524           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3525           attributes.x = x;
3526           attributes.y = y;
3527           attributes.width = width;
3528           attributes.height = height;
3529           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3530                                                                    &attributes, attributes_mask);
3531           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3532
3533           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3534
3535           cr = cairo_create (mask_image);
3536           cairo_move_to (cr, 0, 0);
3537           cairo_line_to (cr, width, 0);
3538           cairo_line_to (cr, width / 2., width / 2);
3539           cairo_move_to (cr, 0, height);
3540           cairo_line_to (cr, width, height);
3541           cairo_line_to (cr, width / 2., height - width / 2.);
3542           cairo_fill (cr);
3543           cairo_destroy (cr);
3544
3545           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3546           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3547                                            mask_region, 0, 0);
3548
3549           cairo_region_destroy (mask_region);
3550           cairo_surface_destroy (mask_image);
3551         }
3552
3553       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3554       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3555     }
3556   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3557            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3558     {
3559       GtkAllocation allocation;
3560
3561       width = tree_view->priv->expander_size;
3562
3563       /* Get x, y, width, height of arrow */
3564       width = width/2; /* remember, the arrow only takes half the available width */
3565       gdk_window_get_origin (gtk_widget_get_window (widget),
3566                              &x, &y);
3567       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3568         {
3569           gtk_widget_get_allocation (widget, &allocation);
3570           x += allocation.width - width;
3571         }
3572
3573       if (reorder->left_column)
3574         {
3575           gtk_widget_get_allocation (reorder->left_column->button, &allocation);
3576           height = allocation.height;
3577         }
3578       else
3579         {
3580           gtk_widget_get_allocation (reorder->right_column->button, &allocation);
3581           height = allocation.height;
3582         }
3583
3584       y -= tree_view->priv->expander_size;
3585       height += 2*tree_view->priv->expander_size;
3586
3587       /* Create the new window */
3588       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3589           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3590         {
3591           if (tree_view->priv->drag_highlight_window)
3592             {
3593               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3594                                         NULL);
3595               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3596             }
3597
3598           attributes.window_type = GDK_WINDOW_TEMP;
3599           attributes.wclass = GDK_INPUT_OUTPUT;
3600           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3601           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3602           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3603           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3604           attributes.x = x;
3605           attributes.y = y;
3606           attributes.width = width;
3607           attributes.height = height;
3608           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3609           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3610
3611           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3612
3613           cr = cairo_create (mask_image);
3614           /* mirror if we're on the left */
3615           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3616             {
3617               cairo_translate (cr, width, 0);
3618               cairo_scale (cr, -1, 1);
3619             }
3620           cairo_move_to (cr, 0, 0);
3621           cairo_line_to (cr, width, width);
3622           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3623           cairo_move_to (cr, 0, height);
3624           cairo_line_to (cr, width, height - width);
3625           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3626           cairo_fill (cr);
3627           cairo_destroy (cr);
3628
3629           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3630           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3631                                            mask_region, 0, 0);
3632
3633           cairo_region_destroy (mask_region);
3634           cairo_surface_destroy (mask_image);
3635         }
3636
3637       tree_view->priv->drag_column_window_state = arrow_type;
3638       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3639    }
3640   else
3641     {
3642       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3643       gdk_window_hide (tree_view->priv->drag_highlight_window);
3644       return;
3645     }
3646
3647   gdk_window_show (tree_view->priv->drag_highlight_window);
3648   gdk_window_raise (tree_view->priv->drag_highlight_window);
3649 }
3650
3651 static gboolean
3652 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3653                                     GdkEventMotion *event)
3654 {
3655   gint x;
3656   gint new_width;
3657   GtkTreeViewColumn *column;
3658   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3659
3660   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3661
3662   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3663     gtk_widget_get_pointer (widget, &x, NULL);
3664   else
3665     x = event->x;
3666
3667   if (tree_view->priv->hadjustment)
3668     x += tree_view->priv->hadjustment->value;
3669
3670   new_width = gtk_tree_view_new_column_width (tree_view,
3671                                               tree_view->priv->drag_pos, &x);
3672   if (x != tree_view->priv->x_drag &&
3673       (new_width != column->fixed_width))
3674     {
3675       column->use_resized_width = TRUE;
3676       column->resized_width = new_width;
3677       if (column->expand)
3678         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3679       gtk_widget_queue_resize (widget);
3680     }
3681
3682   return FALSE;
3683 }
3684
3685
3686 static void
3687 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3688 {
3689   GtkTreeViewColumnReorder *reorder = NULL;
3690   GList *list;
3691   gint mouse_x;
3692
3693   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3694   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3695     {
3696       reorder = (GtkTreeViewColumnReorder *) list->data;
3697       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3698         break;
3699       reorder = NULL;
3700     }
3701
3702   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3703       return;*/
3704
3705   tree_view->priv->cur_reorder = reorder;
3706   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3707 }
3708
3709 static void
3710 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3711 {
3712   GdkRectangle visible_rect;
3713   gint y;
3714   gint offset;
3715
3716   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3717   y += tree_view->priv->dy;
3718
3719   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3720
3721   /* see if we are near the edge. */
3722   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3723   if (offset > 0)
3724     {
3725       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3726       if (offset < 0)
3727         return;
3728     }
3729
3730   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3731                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3732 }
3733
3734 static gboolean
3735 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3736 {
3737   GdkRectangle visible_rect;
3738   gint x;
3739   gint offset;
3740
3741   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3742
3743   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3744
3745   /* See if we are near the edge. */
3746   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3747   if (offset > 0)
3748     {
3749       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3750       if (offset < 0)
3751         return TRUE;
3752     }
3753   offset = offset/3;
3754
3755   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3756                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3757
3758   return TRUE;
3759
3760 }
3761
3762 static gboolean
3763 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3764                                   GdkEventMotion *event)
3765 {
3766   GtkAllocation allocation, button_allocation;
3767   GtkTreeView *tree_view = (GtkTreeView *) widget;
3768   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3769   gint x, y;
3770
3771   /* Sanity Check */
3772   if ((column == NULL) ||
3773       (event->window != tree_view->priv->drag_window))
3774     return FALSE;
3775
3776   /* Handle moving the header */
3777   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3778   gtk_widget_get_allocation (widget, &allocation);
3779   gtk_widget_get_allocation (column->button, &button_allocation);
3780   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3781              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
3782   gdk_window_move (tree_view->priv->drag_window, x, y);
3783
3784   /* autoscroll, if needed */
3785   gtk_tree_view_horizontal_autoscroll (tree_view);
3786   /* Update the current reorder position and arrow; */
3787   gtk_tree_view_update_current_reorder (tree_view);
3788
3789   return TRUE;
3790 }
3791
3792 static void
3793 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3794 {
3795   remove_scroll_timeout (tree_view);
3796   gtk_grab_remove (GTK_WIDGET (tree_view));
3797
3798   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3799     {
3800       GtkTreePath *tmp_path;
3801
3802       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3803
3804       /* The anchor path should be set to the start path */
3805       tmp_path = _gtk_tree_view_find_path (tree_view,
3806                                            tree_view->priv->rubber_band_start_tree,
3807                                            tree_view->priv->rubber_band_start_node);
3808
3809       if (tree_view->priv->anchor)
3810         gtk_tree_row_reference_free (tree_view->priv->anchor);
3811
3812       tree_view->priv->anchor =
3813         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3814                                           tree_view->priv->model,
3815                                           tmp_path);
3816
3817       gtk_tree_path_free (tmp_path);
3818
3819       /* ... and the cursor to the end path */
3820       tmp_path = _gtk_tree_view_find_path (tree_view,
3821                                            tree_view->priv->rubber_band_end_tree,
3822                                            tree_view->priv->rubber_band_end_node);
3823       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3824       gtk_tree_path_free (tmp_path);
3825
3826       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3827     }
3828
3829   /* Clear status variables */
3830   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3831   tree_view->priv->rubber_band_shift = 0;
3832   tree_view->priv->rubber_band_ctrl = 0;
3833
3834   tree_view->priv->rubber_band_start_node = NULL;
3835   tree_view->priv->rubber_band_start_tree = NULL;
3836   tree_view->priv->rubber_band_end_node = NULL;
3837   tree_view->priv->rubber_band_end_tree = NULL;
3838 }
3839
3840 static void
3841 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3842                                                  GtkRBTree   *start_tree,
3843                                                  GtkRBNode   *start_node,
3844                                                  GtkRBTree   *end_tree,
3845                                                  GtkRBNode   *end_node,
3846                                                  gboolean     select,
3847                                                  gboolean     skip_start,
3848                                                  gboolean     skip_end)
3849 {
3850   if (start_node == end_node)
3851     return;
3852
3853   /* We skip the first node and jump inside the loop */
3854   if (skip_start)
3855     goto skip_first;
3856
3857   do
3858     {
3859       /* Small optimization by assuming insensitive nodes are never
3860        * selected.
3861        */
3862       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3863         {
3864           GtkTreePath *path;
3865           gboolean selectable;
3866
3867           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3868           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3869           gtk_tree_path_free (path);
3870
3871           if (!selectable)
3872             goto node_not_selectable;
3873         }
3874
3875       if (select)
3876         {
3877           if (tree_view->priv->rubber_band_shift)
3878             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3879           else if (tree_view->priv->rubber_band_ctrl)
3880             {
3881               /* Toggle the selection state */
3882               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3883                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3884               else
3885                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3886             }
3887           else
3888             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3889         }
3890       else
3891         {
3892           /* Mirror the above */
3893           if (tree_view->priv->rubber_band_shift)
3894             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3895           else if (tree_view->priv->rubber_band_ctrl)
3896             {
3897               /* Toggle the selection state */
3898               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3899                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3900               else
3901                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3902             }
3903           else
3904             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3905         }
3906
3907       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3908
3909 node_not_selectable:
3910       if (start_node == end_node)
3911         break;
3912
3913 skip_first:
3914
3915       if (start_node->children)
3916         {
3917           start_tree = start_node->children;
3918           start_node = start_tree->root;
3919           while (start_node->left != start_tree->nil)
3920             start_node = start_node->left;
3921         }
3922       else
3923         {
3924           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3925
3926           if (!start_tree)
3927             /* Ran out of tree */
3928             break;
3929         }
3930
3931       if (skip_end && start_node == end_node)
3932         break;
3933     }
3934   while (TRUE);
3935 }
3936
3937 static void
3938 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3939 {
3940   GtkRBTree *start_tree, *end_tree;
3941   GtkRBNode *start_node, *end_node;
3942
3943   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
3944   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
3945
3946   /* Handle the start area first */
3947   if (!tree_view->priv->rubber_band_start_node)
3948     {
3949       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3950                                                        start_tree,
3951                                                        start_node,
3952                                                        end_tree,
3953                                                        end_node,
3954                                                        TRUE,
3955                                                        FALSE,
3956                                                        FALSE);
3957     }
3958   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3959            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3960     {
3961       /* New node is above the old one; selection became bigger */
3962       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3963                                                        start_tree,
3964                                                        start_node,
3965                                                        tree_view->priv->rubber_band_start_tree,
3966                                                        tree_view->priv->rubber_band_start_node,
3967                                                        TRUE,
3968                                                        FALSE,
3969                                                        TRUE);
3970     }
3971   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3972            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3973     {
3974       /* New node is below the old one; selection became smaller */
3975       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3976                                                        tree_view->priv->rubber_band_start_tree,
3977                                                        tree_view->priv->rubber_band_start_node,
3978                                                        start_tree,
3979                                                        start_node,
3980                                                        FALSE,
3981                                                        FALSE,
3982                                                        TRUE);
3983     }
3984
3985   tree_view->priv->rubber_band_start_tree = start_tree;
3986   tree_view->priv->rubber_band_start_node = start_node;
3987
3988   /* Next, handle the end area */
3989   if (!tree_view->priv->rubber_band_end_node)
3990     {
3991       /* In the event this happens, start_node was also NULL; this case is
3992        * handled above.
3993        */
3994     }
3995   else if (!end_node)
3996     {
3997       /* Find the last node in the tree */
3998       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3999                                &end_tree, &end_node);
4000
4001       /* Selection reached end of the tree */
4002       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4003                                                        tree_view->priv->rubber_band_end_tree,
4004                                                        tree_view->priv->rubber_band_end_node,
4005                                                        end_tree,
4006                                                        end_node,
4007                                                        TRUE,
4008                                                        TRUE,
4009                                                        FALSE);
4010     }
4011   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4012            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4013     {
4014       /* New node is below the old one; selection became bigger */
4015       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4016                                                        tree_view->priv->rubber_band_end_tree,
4017                                                        tree_view->priv->rubber_band_end_node,
4018                                                        end_tree,
4019                                                        end_node,
4020                                                        TRUE,
4021                                                        TRUE,
4022                                                        FALSE);
4023     }
4024   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4025            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4026     {
4027       /* New node is above the old one; selection became smaller */
4028       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4029                                                        end_tree,
4030                                                        end_node,
4031                                                        tree_view->priv->rubber_band_end_tree,
4032                                                        tree_view->priv->rubber_band_end_node,
4033                                                        FALSE,
4034                                                        TRUE,
4035                                                        FALSE);
4036     }
4037
4038   tree_view->priv->rubber_band_end_tree = end_tree;
4039   tree_view->priv->rubber_band_end_node = end_node;
4040 }
4041
4042 static void
4043 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4044 {
4045   gint x, y;
4046   GdkRectangle old_area;
4047   GdkRectangle new_area;
4048   GdkRectangle common;
4049   cairo_region_t *invalid_region;
4050
4051   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4052   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4053   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4054   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4055
4056   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4057
4058   x = MAX (x, 0);
4059   y = MAX (y, 0) + tree_view->priv->dy;
4060
4061   new_area.x = MIN (tree_view->priv->press_start_x, x);
4062   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4063   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4064   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4065
4066   invalid_region = cairo_region_create_rectangle (&old_area);
4067   cairo_region_union_rectangle (invalid_region, &new_area);
4068
4069   gdk_rectangle_intersect (&old_area, &new_area, &common);
4070   if (common.width > 2 && common.height > 2)
4071     {
4072       cairo_region_t *common_region;
4073
4074       /* make sure the border is invalidated */
4075       common.x += 1;
4076       common.y += 1;
4077       common.width -= 2;
4078       common.height -= 2;
4079
4080       common_region = cairo_region_create_rectangle (&common);
4081
4082       cairo_region_subtract (invalid_region, common_region);
4083       cairo_region_destroy (common_region);
4084     }
4085
4086   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4087
4088   cairo_region_destroy (invalid_region);
4089
4090   tree_view->priv->rubber_band_x = x;
4091   tree_view->priv->rubber_band_y = y;
4092
4093   gtk_tree_view_update_rubber_band_selection (tree_view);
4094 }
4095
4096 static void
4097 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4098                                 GdkRectangle *area)
4099 {
4100   GtkStyle *style;
4101   cairo_t *cr;
4102   GdkRectangle rect;
4103   GdkRectangle rubber_rect;
4104
4105   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4106   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4107   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4108   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4109
4110   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4111     return;
4112
4113   cr = gdk_cairo_create (tree_view->priv->bin_window);
4114   cairo_set_line_width (cr, 1.0);
4115
4116   style = gtk_widget_get_style (GTK_WIDGET (tree_view));
4117
4118   cairo_set_source_rgba (cr,
4119                          style->fg[GTK_STATE_NORMAL].red / 65535.,
4120                          style->fg[GTK_STATE_NORMAL].green / 65535.,
4121                          style->fg[GTK_STATE_NORMAL].blue / 65535.,
4122                          .25);
4123
4124   gdk_cairo_rectangle (cr, &rect);
4125   cairo_clip (cr);
4126   cairo_paint (cr);
4127
4128   cairo_set_source_rgb (cr,
4129                         style->fg[GTK_STATE_NORMAL].red / 65535.,
4130                         style->fg[GTK_STATE_NORMAL].green / 65535.,
4131                         style->fg[GTK_STATE_NORMAL].blue / 65535.);
4132
4133   cairo_rectangle (cr,
4134                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4135                    rubber_rect.width - 1, rubber_rect.height - 1);
4136   cairo_stroke (cr);
4137
4138   cairo_destroy (cr);
4139 }
4140
4141 static gboolean
4142 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4143                                  GdkEventMotion *event)
4144 {
4145   GtkTreeView *tree_view;
4146   GtkRBTree *tree;
4147   GtkRBNode *node;
4148   gint new_y;
4149
4150   tree_view = (GtkTreeView *) widget;
4151
4152   if (tree_view->priv->tree == NULL)
4153     return FALSE;
4154
4155   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4156     {
4157       gtk_grab_add (GTK_WIDGET (tree_view));
4158       gtk_tree_view_update_rubber_band (tree_view);
4159
4160       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4161     }
4162   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4163     {
4164       gtk_tree_view_update_rubber_band (tree_view);
4165
4166       add_scroll_timeout (tree_view);
4167     }
4168
4169   /* only check for an initiated drag when a button is pressed */
4170   if (tree_view->priv->pressed_button >= 0
4171       && !tree_view->priv->rubber_band_status)
4172     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4173
4174   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4175   if (new_y < 0)
4176     new_y = 0;
4177
4178   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4179
4180   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4181   if ((tree_view->priv->button_pressed_node != NULL) &&
4182       (tree_view->priv->button_pressed_node != node))
4183     node = NULL;
4184
4185   tree_view->priv->event_last_x = event->x;
4186   tree_view->priv->event_last_y = event->y;
4187
4188   prelight_or_select (tree_view, tree, node, event->x, event->y);
4189
4190   return TRUE;
4191 }
4192
4193 static gboolean
4194 gtk_tree_view_motion (GtkWidget      *widget,
4195                       GdkEventMotion *event)
4196 {
4197   GtkTreeView *tree_view;
4198
4199   tree_view = (GtkTreeView *) widget;
4200
4201   /* Resizing a column */
4202   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4203     return gtk_tree_view_motion_resize_column (widget, event);
4204
4205   /* Drag column */
4206   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4207     return gtk_tree_view_motion_drag_column (widget, event);
4208
4209   /* Sanity check it */
4210   if (event->window == tree_view->priv->bin_window)
4211     return gtk_tree_view_motion_bin_window (widget, event);
4212
4213   return FALSE;
4214 }
4215
4216 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4217  * the tree is empty.
4218  */
4219 static void
4220 invalidate_empty_focus (GtkTreeView *tree_view)
4221 {
4222   GdkRectangle area;
4223
4224   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4225     return;
4226
4227   area.x = 0;
4228   area.y = 0;
4229   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4230   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4231 }
4232
4233 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4234  * is empty.
4235  */
4236 static void
4237 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4238 {
4239   GtkWidget *widget = GTK_WIDGET (tree_view);
4240   gint w, h;
4241
4242   if (!gtk_widget_has_focus (widget))
4243     return;
4244
4245   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4246
4247   w -= 2;
4248   h -= 2;
4249
4250   if (w > 0 && h > 0)
4251     gtk_paint_focus (gtk_widget_get_style (widget),
4252                      tree_view->priv->bin_window,
4253                      gtk_widget_get_state (widget),
4254                      clip_area,
4255                      widget,
4256                      NULL,
4257                      1, 1, w, h);
4258 }
4259
4260 typedef enum {
4261   GTK_TREE_VIEW_GRID_LINE,
4262   GTK_TREE_VIEW_TREE_LINE,
4263   GTK_TREE_VIEW_FOREGROUND_LINE
4264 } GtkTreeViewLineType;
4265
4266 static void
4267 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4268                          GdkWindow           *window,
4269                          GtkTreeViewLineType  type,
4270                          int                  x1,
4271                          int                  y1,
4272                          int                  x2,
4273                          int                  y2)
4274 {
4275   cairo_t *cr;
4276
4277   cr = gdk_cairo_create (window);
4278
4279   switch (type)
4280     {
4281     case GTK_TREE_VIEW_TREE_LINE:
4282       cairo_set_source_rgb (cr, 0, 0, 0);
4283       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4284       if (tree_view->priv->tree_line_dashes[0])
4285         cairo_set_dash (cr,
4286                         tree_view->priv->tree_line_dashes,
4287                         2, 0.5);
4288       break;
4289     case GTK_TREE_VIEW_GRID_LINE:
4290       cairo_set_source_rgb (cr, 0, 0, 0);
4291       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4292       if (tree_view->priv->grid_line_dashes[0])
4293         cairo_set_dash (cr,
4294                         tree_view->priv->grid_line_dashes,
4295                         2, 0.5);
4296       break;
4297     default:
4298       g_assert_not_reached ();
4299       /* fall through */
4300     case GTK_TREE_VIEW_FOREGROUND_LINE:
4301       cairo_set_line_width (cr, 1.0);
4302       gdk_cairo_set_source_color (cr,
4303                                   &gtk_widget_get_style (GTK_WIDGET (tree_view))->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4304       break;
4305     }
4306
4307   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4308   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4309   cairo_stroke (cr);
4310
4311   cairo_destroy (cr);
4312 }
4313
4314 static void
4315 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4316                                GdkEventExpose *event,
4317                                gint            n_visible_columns)
4318 {
4319   GList *list = tree_view->priv->columns;
4320   gint i = 0;
4321   gint current_x = 0;
4322
4323   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4324       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4325     return;
4326
4327   /* Only draw the lines for visible rows and columns */
4328   for (list = tree_view->priv->columns; list; list = list->next, i++)
4329     {
4330       GtkTreeViewColumn *column = list->data;
4331
4332       /* We don't want a line for the last column */
4333       if (i == n_visible_columns - 1)
4334         break;
4335
4336       if (! column->visible)
4337         continue;
4338
4339       current_x += column->width;
4340
4341       gtk_tree_view_draw_line (tree_view, event->window,
4342                                GTK_TREE_VIEW_GRID_LINE,
4343                                current_x - 1, 0,
4344                                current_x - 1, tree_view->priv->height);
4345     }
4346 }
4347
4348 /* Warning: Very scary function.
4349  * Modify at your own risk
4350  *
4351  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4352  * FIXME: It's not...
4353  */
4354 static gboolean
4355 gtk_tree_view_bin_expose (GtkWidget      *widget,
4356                           GdkEventExpose *event)
4357 {
4358   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4359   GtkTreePath *path;
4360   GtkStyle *style;
4361   GtkRBTree *tree;
4362   GList *list;
4363   GtkRBNode *node;
4364   GtkRBNode *cursor = NULL;
4365   GtkRBTree *cursor_tree = NULL;
4366   GtkRBNode *drag_highlight = NULL;
4367   GtkRBTree *drag_highlight_tree = NULL;
4368   GtkTreeIter iter;
4369   gint new_y;
4370   gint y_offset, cell_offset;
4371   gint max_height;
4372   gint depth;
4373   GdkRectangle background_area;
4374   GdkRectangle cell_area;
4375   guint flags;
4376   gint highlight_x;
4377   gint expander_cell_width;
4378   gint bin_window_width;
4379   gint bin_window_height;
4380   GtkTreePath *cursor_path;
4381   GtkTreePath *drag_dest_path;
4382   GList *first_column, *last_column;
4383   gint vertical_separator;
4384   gint horizontal_separator;
4385   gint focus_line_width;
4386   gboolean allow_rules;
4387   gboolean has_special_cell;
4388   gboolean rtl;
4389   gint n_visible_columns;
4390   gint pointer_x, pointer_y;
4391   gint grid_line_width;
4392   gboolean got_pointer = FALSE;
4393   gboolean draw_vgrid_lines, draw_hgrid_lines;
4394
4395   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4396
4397   gtk_widget_style_get (widget,
4398                         "horizontal-separator", &horizontal_separator,
4399                         "vertical-separator", &vertical_separator,
4400                         "allow-rules", &allow_rules,
4401                         "focus-line-width", &focus_line_width,
4402                         NULL);
4403
4404   if (tree_view->priv->tree == NULL)
4405     {
4406       draw_empty_focus (tree_view, &event->area);
4407       return TRUE;
4408     }
4409
4410   /* clip event->area to the visible area */
4411   if (event->area.height < 0)
4412     return TRUE;
4413
4414   validate_visible_area (tree_view);
4415
4416   style = gtk_widget_get_style (widget);
4417
4418   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4419
4420   if (new_y < 0)
4421     new_y = 0;
4422   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4423   gdk_drawable_get_size (tree_view->priv->bin_window,
4424                          &bin_window_width, &bin_window_height);
4425
4426   if (tree_view->priv->height < bin_window_height)
4427     {
4428       gtk_paint_flat_box (style,
4429                           event->window,
4430                           gtk_widget_get_state (widget),
4431                           GTK_SHADOW_NONE,
4432                           &event->area,
4433                           widget,
4434                           "cell_even",
4435                           0, tree_view->priv->height,
4436                           bin_window_width,
4437                           bin_window_height - tree_view->priv->height);
4438     }
4439
4440   if (node == NULL)
4441     return TRUE;
4442
4443   /* find the path for the node */
4444   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4445                                    tree,
4446                                    node);
4447   gtk_tree_model_get_iter (tree_view->priv->model,
4448                            &iter,
4449                            path);
4450   depth = gtk_tree_path_get_depth (path);
4451   gtk_tree_path_free (path);
4452
4453   cursor_path = NULL;
4454   drag_dest_path = NULL;
4455
4456   if (tree_view->priv->cursor)
4457     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4458
4459   if (cursor_path)
4460     _gtk_tree_view_find_node (tree_view, cursor_path,
4461                               &cursor_tree, &cursor);
4462
4463   if (tree_view->priv->drag_dest_row)
4464     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4465
4466   if (drag_dest_path)
4467     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4468                               &drag_highlight_tree, &drag_highlight);
4469
4470   draw_vgrid_lines =
4471     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4472     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4473   draw_hgrid_lines =
4474     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4475     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4476
4477   if (draw_vgrid_lines || draw_hgrid_lines)
4478     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4479
4480   n_visible_columns = 0;
4481   for (list = tree_view->priv->columns; list; list = list->next)
4482     {
4483       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4484         continue;
4485       n_visible_columns ++;
4486     }
4487
4488   /* Find the last column */
4489   for (last_column = g_list_last (tree_view->priv->columns);
4490        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4491        last_column = last_column->prev)
4492     ;
4493
4494   /* and the first */
4495   for (first_column = g_list_first (tree_view->priv->columns);
4496        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4497        first_column = first_column->next)
4498     ;
4499
4500   /* Actually process the expose event.  To do this, we want to
4501    * start at the first node of the event, and walk the tree in
4502    * order, drawing each successive node.
4503    */
4504
4505   do
4506     {
4507       gboolean parity;
4508       gboolean is_separator = FALSE;
4509       gboolean is_first = FALSE;
4510       gboolean is_last = FALSE;
4511
4512       is_separator = row_is_separator (tree_view, &iter, NULL);
4513
4514       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4515
4516       cell_offset = 0;
4517       highlight_x = 0; /* should match x coord of first cell */
4518       expander_cell_width = 0;
4519
4520       background_area.y = y_offset + event->area.y;
4521       background_area.height = max_height;
4522
4523       flags = 0;
4524
4525       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4526         flags |= GTK_CELL_RENDERER_PRELIT;
4527
4528       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4529         flags |= GTK_CELL_RENDERER_SELECTED;
4530
4531       parity = _gtk_rbtree_node_find_parity (tree, node);
4532
4533       /* we *need* to set cell data on all cells before the call
4534        * to _has_special_cell, else _has_special_cell() does not
4535        * return a correct value.
4536        */
4537       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4538            list;
4539            list = (rtl ? list->prev : list->next))
4540         {
4541           GtkTreeViewColumn *column = list->data;
4542           gtk_tree_view_column_cell_set_cell_data (column,
4543                                                    tree_view->priv->model,
4544                                                    &iter,
4545                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4546                                                    node->children?TRUE:FALSE);
4547         }
4548
4549       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4550
4551       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4552            list;
4553            list = (rtl ? list->prev : list->next))
4554         {
4555           GtkTreeViewColumn *column = list->data;
4556           const gchar *detail = NULL;
4557           gchar new_detail[128];
4558           GtkStateType state;
4559
4560           if (!column->visible)
4561             continue;
4562
4563           if (cell_offset > event->area.x + event->area.width ||
4564               cell_offset + column->width < event->area.x)
4565             {
4566               cell_offset += column->width;
4567               continue;
4568             }
4569
4570           if (column->show_sort_indicator)
4571             flags |= GTK_CELL_RENDERER_SORTED;
4572           else
4573             flags &= ~GTK_CELL_RENDERER_SORTED;
4574
4575           if (cursor == node)
4576             flags |= GTK_CELL_RENDERER_FOCUSED;
4577           else
4578             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4579
4580           background_area.x = cell_offset;
4581           background_area.width = column->width;
4582
4583           cell_area = background_area;
4584           cell_area.y += vertical_separator / 2;
4585           cell_area.x += horizontal_separator / 2;
4586           cell_area.height -= vertical_separator;
4587           cell_area.width -= horizontal_separator;
4588
4589           if (draw_vgrid_lines)
4590             {
4591               if (list == first_column)
4592                 {
4593                   cell_area.width -= grid_line_width / 2;
4594                 }
4595               else if (list == last_column)
4596                 {
4597                   cell_area.x += grid_line_width / 2;
4598                   cell_area.width -= grid_line_width / 2;
4599                 }
4600               else
4601                 {
4602                   cell_area.x += grid_line_width / 2;
4603                   cell_area.width -= grid_line_width;
4604                 }
4605             }
4606
4607           if (draw_hgrid_lines)
4608             {
4609               cell_area.y += grid_line_width / 2;
4610               cell_area.height -= grid_line_width;
4611             }
4612
4613           if (cairo_region_contains_rectangle (event->region, &background_area) == CAIRO_REGION_OVERLAP_OUT)
4614             {
4615               cell_offset += column->width;
4616               continue;
4617             }
4618
4619           gtk_tree_view_column_cell_set_cell_data (column,
4620                                                    tree_view->priv->model,
4621                                                    &iter,
4622                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4623                                                    node->children?TRUE:FALSE);
4624
4625           /* Select the detail for drawing the cell.  relevant
4626            * factors are parity, sortedness, and whether to
4627            * display rules.
4628            */
4629           if (allow_rules && tree_view->priv->has_rules)
4630             {
4631               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4632                   n_visible_columns >= 3)
4633                 {
4634                   if (parity)
4635                     detail = "cell_odd_ruled_sorted";
4636                   else
4637                     detail = "cell_even_ruled_sorted";
4638                 }
4639               else
4640                 {
4641                   if (parity)
4642                     detail = "cell_odd_ruled";
4643                   else
4644                     detail = "cell_even_ruled";
4645                 }
4646             }
4647           else
4648             {
4649               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4650                   n_visible_columns >= 3)
4651                 {
4652                   if (parity)
4653                     detail = "cell_odd_sorted";
4654                   else
4655                     detail = "cell_even_sorted";
4656                 }
4657               else
4658                 {
4659                   if (parity)
4660                     detail = "cell_odd";
4661                   else
4662                     detail = "cell_even";
4663                 }
4664             }
4665
4666           g_assert (detail);
4667
4668           if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
4669             state = GTK_STATE_INSENSITIVE;
4670           else if (flags & GTK_CELL_RENDERER_SELECTED)
4671             state = GTK_STATE_SELECTED;
4672           else
4673             state = GTK_STATE_NORMAL;
4674
4675           /* Draw background */
4676           is_first = (rtl ? !list->next : !list->prev);
4677           is_last = (rtl ? !list->prev : !list->next);
4678
4679           /* (I don't like the snprintfs either, but couldn't find a
4680            * less messy way).
4681            */
4682           if (is_first && is_last)
4683             g_snprintf (new_detail, 127, "%s", detail);
4684           else if (is_first)
4685             g_snprintf (new_detail, 127, "%s_start", detail);
4686           else if (is_last)
4687             g_snprintf (new_detail, 127, "%s_end", detail);
4688           else
4689             g_snprintf (new_detail, 127, "%s_middle", detail);
4690
4691           gtk_paint_flat_box (style,
4692                               event->window,
4693                               state,
4694                               GTK_SHADOW_NONE,
4695                               &event->area,
4696                               widget,
4697                               new_detail,
4698                               background_area.x,
4699                               background_area.y,
4700                               background_area.width,
4701                               background_area.height);
4702
4703           if (gtk_tree_view_is_expander_column (tree_view, column))
4704             {
4705               if (!rtl)
4706                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4707               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4708
4709               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4710                 {
4711                   if (!rtl)
4712                     cell_area.x += depth * tree_view->priv->expander_size;
4713                   cell_area.width -= depth * tree_view->priv->expander_size;
4714                 }
4715
4716               /* If we have an expander column, the highlight underline
4717                * starts with that column, so that it indicates which
4718                * level of the tree we're dropping at.
4719                */
4720               highlight_x = cell_area.x;
4721               expander_cell_width = cell_area.width;
4722
4723               if (is_separator)
4724                 gtk_paint_hline (style,
4725                                  event->window,
4726                                  state,
4727                                  &cell_area,
4728                                  widget,
4729                                  NULL,
4730                                  cell_area.x,
4731                                  cell_area.x + cell_area.width,
4732                                  cell_area.y + cell_area.height / 2);
4733               else
4734                 _gtk_tree_view_column_cell_render (column,
4735                                                    event->window,
4736                                                    &background_area,
4737                                                    &cell_area,
4738                                                    &event->area,
4739                                                    flags);
4740               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4741                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4742                 {
4743                   if (!got_pointer)
4744                     {
4745                       gdk_window_get_pointer (tree_view->priv->bin_window,
4746                                               &pointer_x, &pointer_y, NULL);
4747                       got_pointer = TRUE;
4748                     }
4749
4750                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4751                                             tree,
4752                                             node,
4753                                             pointer_x, pointer_y);
4754                 }
4755             }
4756           else
4757             {
4758               if (is_separator)
4759                 gtk_paint_hline (style,
4760                                  event->window,
4761                                  state,
4762                                  &cell_area,
4763                                  widget,
4764                                  NULL,
4765                                  cell_area.x,
4766                                  cell_area.x + cell_area.width,
4767                                  cell_area.y + cell_area.height / 2);
4768               else
4769                 _gtk_tree_view_column_cell_render (column,
4770                                                    event->window,
4771                                                    &background_area,
4772                                                    &cell_area,
4773                                                    &event->area,
4774                                                    flags);
4775             }
4776
4777           if (draw_hgrid_lines)
4778             {
4779               if (background_area.y > 0)
4780                 gtk_tree_view_draw_line (tree_view, event->window,
4781                                          GTK_TREE_VIEW_GRID_LINE,
4782                                          background_area.x, background_area.y,
4783                                          background_area.x + background_area.width,
4784                                          background_area.y);
4785
4786               if (y_offset + max_height >= event->area.height)
4787                 gtk_tree_view_draw_line (tree_view, event->window,
4788                                          GTK_TREE_VIEW_GRID_LINE,
4789                                          background_area.x, background_area.y + max_height,
4790                                          background_area.x + background_area.width,
4791                                          background_area.y + max_height);
4792             }
4793
4794           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4795               tree_view->priv->tree_lines_enabled)
4796             {
4797               gint x = background_area.x;
4798               gint mult = rtl ? -1 : 1;
4799               gint y0 = background_area.y;
4800               gint y1 = background_area.y + background_area.height/2;
4801               gint y2 = background_area.y + background_area.height;
4802
4803               if (rtl)
4804                 x += background_area.width - 1;
4805
4806               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4807                   && depth > 1)
4808                 {
4809                   gtk_tree_view_draw_line (tree_view, event->window,
4810                                            GTK_TREE_VIEW_TREE_LINE,
4811                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4812                                            y1,
4813                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4814                                            y1);
4815                 }
4816               else if (depth > 1)
4817                 {
4818                   gtk_tree_view_draw_line (tree_view, event->window,
4819                                            GTK_TREE_VIEW_TREE_LINE,
4820                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4821                                            y1,
4822                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4823                                            y1);
4824                 }
4825
4826               if (depth > 1)
4827                 {
4828                   gint i;
4829                   GtkRBNode *tmp_node;
4830                   GtkRBTree *tmp_tree;
4831
4832                   if (!_gtk_rbtree_next (tree, node))
4833                     gtk_tree_view_draw_line (tree_view, event->window,
4834                                              GTK_TREE_VIEW_TREE_LINE,
4835                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4836                                              y0,
4837                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4838                                              y1);
4839                   else
4840                     gtk_tree_view_draw_line (tree_view, event->window,
4841                                              GTK_TREE_VIEW_TREE_LINE,
4842                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4843                                              y0,
4844                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4845                                              y2);
4846
4847                   tmp_node = tree->parent_node;
4848                   tmp_tree = tree->parent_tree;
4849
4850                   for (i = depth - 2; i > 0; i--)
4851                     {
4852                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4853                         gtk_tree_view_draw_line (tree_view, event->window,
4854                                                  GTK_TREE_VIEW_TREE_LINE,
4855                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4856                                                  y0,
4857                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4858                                                  y2);
4859
4860                       tmp_node = tmp_tree->parent_node;
4861                       tmp_tree = tmp_tree->parent_tree;
4862                     }
4863                 }
4864             }
4865
4866           if (node == cursor && has_special_cell &&
4867               ((column == tree_view->priv->focus_column &&
4868                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4869                 gtk_widget_has_focus (widget)) ||
4870                (column == tree_view->priv->edited_column)))
4871             {
4872               _gtk_tree_view_column_cell_draw_focus (column,
4873                                                      event->window,
4874                                                      &background_area,
4875                                                      &cell_area,
4876                                                      &event->area,
4877                                                      flags);
4878             }
4879
4880           cell_offset += column->width;
4881         }
4882
4883       if (node == drag_highlight)
4884         {
4885           /* Draw indicator for the drop
4886            */
4887           gint highlight_y = -1;
4888           GtkRBTree *tree = NULL;
4889           GtkRBNode *node = NULL;
4890           gint width;
4891
4892           switch (tree_view->priv->drag_dest_pos)
4893             {
4894             case GTK_TREE_VIEW_DROP_BEFORE:
4895               highlight_y = background_area.y - 1;
4896               if (highlight_y < 0)
4897                       highlight_y = 0;
4898               break;
4899
4900             case GTK_TREE_VIEW_DROP_AFTER:
4901               highlight_y = background_area.y + background_area.height - 1;
4902               break;
4903
4904             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4905             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4906               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4907
4908               if (tree == NULL)
4909                 break;
4910               gdk_drawable_get_size (tree_view->priv->bin_window,
4911                                      &width, NULL);
4912
4913               gtk_paint_focus (style,
4914                                tree_view->priv->bin_window,
4915                                gtk_widget_get_state (widget),
4916                                &event->area,
4917                                widget,
4918                                (is_first
4919                                 ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4920                                 : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4921                                 0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4922                                    - focus_line_width / 2,
4923                                 width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4924                                        - focus_line_width + 1);
4925               break;
4926             }
4927
4928           if (highlight_y >= 0)
4929             {
4930               gtk_tree_view_draw_line (tree_view, event->window,
4931                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4932                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4933                                        highlight_y,
4934                                        rtl ? 0 : bin_window_width,
4935                                        highlight_y);
4936             }
4937         }
4938
4939       /* draw the big row-spanning focus rectangle, if needed */
4940       if (!has_special_cell && node == cursor &&
4941           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4942           gtk_widget_has_focus (widget))
4943         {
4944           gint tmp_y, tmp_height;
4945           gint width;
4946           GtkStateType focus_rect_state;
4947
4948           focus_rect_state =
4949             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4950             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4951              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4952               GTK_STATE_NORMAL));
4953
4954           gdk_drawable_get_size (tree_view->priv->bin_window,
4955                                  &width, NULL);
4956
4957           if (draw_hgrid_lines)
4958             {
4959               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4960               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4961             }
4962           else
4963             {
4964               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4965               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4966             }
4967
4968           gtk_paint_focus (style,
4969                            tree_view->priv->bin_window,
4970                            focus_rect_state,
4971                            &event->area,
4972                            widget,
4973                            (is_first
4974                             ? (is_last ? "treeview" : "treeview-left" )
4975                             : (is_last ? "treeview-right" : "treeview-middle" )),
4976                            0, tmp_y,
4977                            width, tmp_height);
4978         }
4979
4980       y_offset += max_height;
4981       if (node->children)
4982         {
4983           GtkTreeIter parent = iter;
4984           gboolean has_child;
4985
4986           tree = node->children;
4987           node = tree->root;
4988
4989           g_assert (node != tree->nil);
4990
4991           while (node->left != tree->nil)
4992             node = node->left;
4993           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4994                                                     &iter,
4995                                                     &parent);
4996           depth++;
4997
4998           /* Sanity Check! */
4999           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5000         }
5001       else
5002         {
5003           gboolean done = FALSE;
5004
5005           do
5006             {
5007               node = _gtk_rbtree_next (tree, node);
5008               if (node != NULL)
5009                 {
5010                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5011                   done = TRUE;
5012
5013                   /* Sanity Check! */
5014                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5015                 }
5016               else
5017                 {
5018                   GtkTreeIter parent_iter = iter;
5019                   gboolean has_parent;
5020
5021                   node = tree->parent_node;
5022                   tree = tree->parent_tree;
5023                   if (tree == NULL)
5024                     /* we should go to done to free some memory */
5025                     goto done;
5026                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5027                                                            &iter,
5028                                                            &parent_iter);
5029                   depth--;
5030
5031                   /* Sanity check */
5032                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5033                 }
5034             }
5035           while (!done);
5036         }
5037     }
5038   while (y_offset < event->area.height);
5039
5040 done:
5041   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
5042
5043   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5044     {
5045       GdkRectangle rectangle;
5046       gint n_rectangles;
5047
5048       n_rectangles = cairo_region_num_rectangles (event->region);
5049
5050       while (n_rectangles--)
5051         {
5052           cairo_region_get_rectangle (event->region, n_rectangles, &rectangle);
5053           gtk_tree_view_paint_rubber_band (tree_view, &rectangle);
5054         }
5055     }
5056
5057   if (cursor_path)
5058     gtk_tree_path_free (cursor_path);
5059
5060   if (drag_dest_path)
5061     gtk_tree_path_free (drag_dest_path);
5062
5063   return FALSE;
5064 }
5065
5066 static gboolean
5067 gtk_tree_view_expose (GtkWidget      *widget,
5068                       GdkEventExpose *event)
5069 {
5070   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5071
5072   if (event->window == tree_view->priv->bin_window)
5073     {
5074       gboolean retval;
5075       GList *tmp_list;
5076
5077       retval = gtk_tree_view_bin_expose (widget, event);
5078
5079       /* We can't just chain up to Container::expose as it will try to send the
5080        * event to the headers, so we handle propagating it to our children
5081        * (eg. widgets being edited) ourselves.
5082        */
5083       tmp_list = tree_view->priv->children;
5084       while (tmp_list)
5085         {
5086           GtkTreeViewChild *child = tmp_list->data;
5087           tmp_list = tmp_list->next;
5088
5089           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5090         }
5091
5092       return retval;
5093     }
5094
5095   else if (event->window == tree_view->priv->header_window)
5096     {
5097       GList *list;
5098
5099       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5100         {
5101           GtkTreeViewColumn *column = list->data;
5102
5103           if (column == tree_view->priv->drag_column)
5104             continue;
5105
5106           if (column->visible)
5107             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5108                                             column->button,
5109                                             event);
5110         }
5111     }
5112   else if (event->window == tree_view->priv->drag_window)
5113     {
5114       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5115                                       tree_view->priv->drag_column->button,
5116                                       event);
5117     }
5118   return TRUE;
5119 }
5120
5121 enum
5122 {
5123   DROP_HOME,
5124   DROP_RIGHT,
5125   DROP_LEFT,
5126   DROP_END
5127 };
5128
5129 /* returns 0x1 when no column has been found -- yes it's hackish */
5130 static GtkTreeViewColumn *
5131 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5132                                GtkTreeViewColumn *column,
5133                                gint               drop_position)
5134 {
5135   GtkTreeViewColumn *left_column = NULL;
5136   GtkTreeViewColumn *cur_column = NULL;
5137   GList *tmp_list;
5138
5139   if (!column->reorderable)
5140     return (GtkTreeViewColumn *)0x1;
5141
5142   switch (drop_position)
5143     {
5144       case DROP_HOME:
5145         /* find first column where we can drop */
5146         tmp_list = tree_view->priv->columns;
5147         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5148           return (GtkTreeViewColumn *)0x1;
5149
5150         while (tmp_list)
5151           {
5152             g_assert (tmp_list);
5153
5154             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5155             tmp_list = tmp_list->next;
5156
5157             if (left_column && left_column->visible == FALSE)
5158               continue;
5159
5160             if (!tree_view->priv->column_drop_func)
5161               return left_column;
5162
5163             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5164               {
5165                 left_column = cur_column;
5166                 continue;
5167               }
5168
5169             return left_column;
5170           }
5171
5172         if (!tree_view->priv->column_drop_func)
5173           return left_column;
5174
5175         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5176           return left_column;
5177         else
5178           return (GtkTreeViewColumn *)0x1;
5179         break;
5180
5181       case DROP_RIGHT:
5182         /* find first column after column where we can drop */
5183         tmp_list = tree_view->priv->columns;
5184
5185         for (; tmp_list; tmp_list = tmp_list->next)
5186           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5187             break;
5188
5189         if (!tmp_list || !tmp_list->next)
5190           return (GtkTreeViewColumn *)0x1;
5191
5192         tmp_list = tmp_list->next;
5193         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5194         tmp_list = tmp_list->next;
5195
5196         while (tmp_list)
5197           {
5198             g_assert (tmp_list);
5199
5200             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5201             tmp_list = tmp_list->next;
5202
5203             if (left_column && left_column->visible == FALSE)
5204               {
5205                 left_column = cur_column;
5206                 if (tmp_list)
5207                   tmp_list = tmp_list->next;
5208                 continue;
5209               }
5210
5211             if (!tree_view->priv->column_drop_func)
5212               return left_column;
5213
5214             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5215               {
5216                 left_column = cur_column;
5217                 continue;
5218               }
5219
5220             return left_column;
5221           }
5222
5223         if (!tree_view->priv->column_drop_func)
5224           return left_column;
5225
5226         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5227           return left_column;
5228         else
5229           return (GtkTreeViewColumn *)0x1;
5230         break;
5231
5232       case DROP_LEFT:
5233         /* find first column before column where we can drop */
5234         tmp_list = tree_view->priv->columns;
5235
5236         for (; tmp_list; tmp_list = tmp_list->next)
5237           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5238             break;
5239
5240         if (!tmp_list || !tmp_list->prev)
5241           return (GtkTreeViewColumn *)0x1;
5242
5243         tmp_list = tmp_list->prev;
5244         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5245         tmp_list = tmp_list->prev;
5246
5247         while (tmp_list)
5248           {
5249             g_assert (tmp_list);
5250
5251             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5252
5253             if (left_column && !left_column->visible)
5254               {
5255                 /*if (!tmp_list->prev)
5256                   return (GtkTreeViewColumn *)0x1;
5257                   */
5258 /*
5259                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5260                 tmp_list = tmp_list->prev->prev;
5261                 continue;*/
5262
5263                 cur_column = left_column;
5264                 if (tmp_list)
5265                   tmp_list = tmp_list->prev;
5266                 continue;
5267               }
5268
5269             if (!tree_view->priv->column_drop_func)
5270               return left_column;
5271
5272             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5273               return left_column;
5274
5275             cur_column = left_column;
5276             tmp_list = tmp_list->prev;
5277           }
5278
5279         if (!tree_view->priv->column_drop_func)
5280           return NULL;
5281
5282         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5283           return NULL;
5284         else
5285           return (GtkTreeViewColumn *)0x1;
5286         break;
5287
5288       case DROP_END:
5289         /* same as DROP_HOME case, but doing it backwards */
5290         tmp_list = g_list_last (tree_view->priv->columns);
5291         cur_column = NULL;
5292
5293         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5294           return (GtkTreeViewColumn *)0x1;
5295
5296         while (tmp_list)
5297           {
5298             g_assert (tmp_list);
5299
5300             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5301
5302             if (left_column && !left_column->visible)
5303               {
5304                 cur_column = left_column;
5305                 tmp_list = tmp_list->prev;
5306               }
5307
5308             if (!tree_view->priv->column_drop_func)
5309               return left_column;
5310
5311             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5312               return left_column;
5313
5314             cur_column = left_column;
5315             tmp_list = tmp_list->prev;
5316           }
5317
5318         if (!tree_view->priv->column_drop_func)
5319           return NULL;
5320
5321         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5322           return NULL;
5323         else
5324           return (GtkTreeViewColumn *)0x1;
5325         break;
5326     }
5327
5328   return (GtkTreeViewColumn *)0x1;
5329 }
5330
5331 static gboolean
5332 gtk_tree_view_key_press (GtkWidget   *widget,
5333                          GdkEventKey *event)
5334 {
5335   GtkTreeView *tree_view = (GtkTreeView *) widget;
5336
5337   if (tree_view->priv->rubber_band_status)
5338     {
5339       if (event->keyval == GDK_KEY_Escape)
5340         gtk_tree_view_stop_rubber_band (tree_view);
5341
5342       return TRUE;
5343     }
5344
5345   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5346     {
5347       if (event->keyval == GDK_KEY_Escape)
5348         {
5349           tree_view->priv->cur_reorder = NULL;
5350           gtk_tree_view_button_release_drag_column (widget, NULL);
5351         }
5352       return TRUE;
5353     }
5354
5355   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5356     {
5357       GList *focus_column;
5358       gboolean rtl;
5359
5360       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5361
5362       for (focus_column = tree_view->priv->columns;
5363            focus_column;
5364            focus_column = focus_column->next)
5365         {
5366           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5367
5368           if (gtk_widget_has_focus (column->button))
5369             break;
5370         }
5371
5372       if (focus_column &&
5373           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5374           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5375            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5376         {
5377           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5378
5379           if (!column->resizable)
5380             {
5381               gtk_widget_error_bell (widget);
5382               return TRUE;
5383             }
5384
5385           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5386               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5387             {
5388               GtkRequisition button_req;
5389               gint old_width = column->resized_width;
5390
5391               gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
5392
5393               column->resized_width = MAX (column->resized_width,
5394                                            column->width);
5395               column->resized_width -= 2;
5396               if (column->resized_width < 0)
5397                 column->resized_width = 0;
5398
5399               if (column->min_width == -1)
5400                 column->resized_width = MAX (button_req.width,
5401                                              column->resized_width);
5402               else
5403                 {
5404                   column->resized_width = MAX (column->min_width,
5405                                                column->resized_width);
5406                 }
5407
5408               if (column->max_width != -1)
5409                 column->resized_width = MIN (column->resized_width,
5410                                              column->max_width);
5411
5412               column->use_resized_width = TRUE;
5413
5414               if (column->resized_width != old_width)
5415                 gtk_widget_queue_resize (widget);
5416               else
5417                 gtk_widget_error_bell (widget);
5418             }
5419           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5420                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5421             {
5422               gint old_width = column->resized_width;
5423
5424               column->resized_width = MAX (column->resized_width,
5425                                            column->width);
5426               column->resized_width += 2;
5427
5428               if (column->max_width != -1)
5429                 column->resized_width = MIN (column->resized_width,
5430                                              column->max_width);
5431
5432               column->use_resized_width = TRUE;
5433
5434               if (column->resized_width != old_width)
5435                 gtk_widget_queue_resize (widget);
5436               else
5437                 gtk_widget_error_bell (widget);
5438             }
5439
5440           return TRUE;
5441         }
5442
5443       if (focus_column &&
5444           (event->state & GDK_MOD1_MASK) &&
5445           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5446            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5447            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5448            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5449         {
5450           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5451
5452           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5453               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5454             {
5455               GtkTreeViewColumn *col;
5456               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5457               if (col != (GtkTreeViewColumn *)0x1)
5458                 gtk_tree_view_move_column_after (tree_view, column, col);
5459               else
5460                 gtk_widget_error_bell (widget);
5461             }
5462           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5463                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5464             {
5465               GtkTreeViewColumn *col;
5466               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5467               if (col != (GtkTreeViewColumn *)0x1)
5468                 gtk_tree_view_move_column_after (tree_view, column, col);
5469               else
5470                 gtk_widget_error_bell (widget);
5471             }
5472           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5473             {
5474               GtkTreeViewColumn *col;
5475               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5476               if (col != (GtkTreeViewColumn *)0x1)
5477                 gtk_tree_view_move_column_after (tree_view, column, col);
5478               else
5479                 gtk_widget_error_bell (widget);
5480             }
5481           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5482             {
5483               GtkTreeViewColumn *col;
5484               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5485               if (col != (GtkTreeViewColumn *)0x1)
5486                 gtk_tree_view_move_column_after (tree_view, column, col);
5487               else
5488                 gtk_widget_error_bell (widget);
5489             }
5490
5491           return TRUE;
5492         }
5493     }
5494
5495   /* Chain up to the parent class.  It handles the keybindings. */
5496   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5497     return TRUE;
5498
5499   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5500     {
5501       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5502       return FALSE;
5503     }
5504
5505   /* We pass the event to the search_entry.  If its text changes, then we start
5506    * the typeahead find capabilities. */
5507   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5508       && tree_view->priv->enable_search
5509       && !tree_view->priv->search_custom_entry_set)
5510     {
5511       GdkEvent *new_event;
5512       char *old_text;
5513       const char *new_text;
5514       gboolean retval;
5515       GdkScreen *screen;
5516       gboolean text_modified;
5517       gulong popup_menu_id;
5518
5519       gtk_tree_view_ensure_interactive_directory (tree_view);
5520
5521       /* Make a copy of the current text */
5522       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5523       new_event = gdk_event_copy ((GdkEvent *) event);
5524       g_object_unref (((GdkEventKey *) new_event)->window);
5525       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5526       gtk_widget_realize (tree_view->priv->search_window);
5527
5528       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5529                                         "popup-menu", G_CALLBACK (gtk_true),
5530                                         NULL);
5531
5532       /* Move the entry off screen */
5533       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5534       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5535                        gdk_screen_get_width (screen) + 1,
5536                        gdk_screen_get_height (screen) + 1);
5537       gtk_widget_show (tree_view->priv->search_window);
5538
5539       /* Send the event to the window.  If the preedit_changed signal is emitted
5540        * during this event, we will set priv->imcontext_changed  */
5541       tree_view->priv->imcontext_changed = FALSE;
5542       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5543       gdk_event_free (new_event);
5544       gtk_widget_hide (tree_view->priv->search_window);
5545
5546       g_signal_handler_disconnect (tree_view->priv->search_entry,
5547                                    popup_menu_id);
5548
5549       /* We check to make sure that the entry tried to handle the text, and that
5550        * the text has changed.
5551        */
5552       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5553       text_modified = strcmp (old_text, new_text) != 0;
5554       g_free (old_text);
5555       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5556           (retval && text_modified))               /* ...or the text was modified */
5557         {
5558           if (gtk_tree_view_real_start_interactive_search (tree_view,
5559                                                            gdk_event_get_device ((GdkEvent *) event),
5560                                                            FALSE))
5561             {
5562               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5563               return TRUE;
5564             }
5565           else
5566             {
5567               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5568               return FALSE;
5569             }
5570         }
5571     }
5572
5573   return FALSE;
5574 }
5575
5576 static gboolean
5577 gtk_tree_view_key_release (GtkWidget   *widget,
5578                            GdkEventKey *event)
5579 {
5580   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5581
5582   if (tree_view->priv->rubber_band_status)
5583     return TRUE;
5584
5585   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5586 }
5587
5588 /* FIXME Is this function necessary? Can I get an enter_notify event
5589  * w/o either an expose event or a mouse motion event?
5590  */
5591 static gboolean
5592 gtk_tree_view_enter_notify (GtkWidget        *widget,
5593                             GdkEventCrossing *event)
5594 {
5595   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5596   GtkRBTree *tree;
5597   GtkRBNode *node;
5598   gint new_y;
5599
5600   /* Sanity check it */
5601   if (event->window != tree_view->priv->bin_window)
5602     return FALSE;
5603
5604   if (tree_view->priv->tree == NULL)
5605     return FALSE;
5606
5607   if (event->mode == GDK_CROSSING_GRAB ||
5608       event->mode == GDK_CROSSING_GTK_GRAB ||
5609       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5610       event->mode == GDK_CROSSING_STATE_CHANGED)
5611     return TRUE;
5612
5613   /* find the node internally */
5614   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5615   if (new_y < 0)
5616     new_y = 0;
5617   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5618
5619   tree_view->priv->event_last_x = event->x;
5620   tree_view->priv->event_last_y = event->y;
5621
5622   if ((tree_view->priv->button_pressed_node == NULL) ||
5623       (tree_view->priv->button_pressed_node == node))
5624     prelight_or_select (tree_view, tree, node, event->x, event->y);
5625
5626   return TRUE;
5627 }
5628
5629 static gboolean
5630 gtk_tree_view_leave_notify (GtkWidget        *widget,
5631                             GdkEventCrossing *event)
5632 {
5633   GtkTreeView *tree_view;
5634
5635   if (event->mode == GDK_CROSSING_GRAB)
5636     return TRUE;
5637
5638   tree_view = GTK_TREE_VIEW (widget);
5639
5640   if (tree_view->priv->prelight_node)
5641     _gtk_tree_view_queue_draw_node (tree_view,
5642                                    tree_view->priv->prelight_tree,
5643                                    tree_view->priv->prelight_node,
5644                                    NULL);
5645
5646   tree_view->priv->event_last_x = -10000;
5647   tree_view->priv->event_last_y = -10000;
5648
5649   prelight_or_select (tree_view,
5650                       NULL, NULL,
5651                       -1000, -1000); /* coords not possibly over an arrow */
5652
5653   return TRUE;
5654 }
5655
5656
5657 static gint
5658 gtk_tree_view_focus_out (GtkWidget     *widget,
5659                          GdkEventFocus *event)
5660 {
5661   GtkTreeView *tree_view;
5662
5663   tree_view = GTK_TREE_VIEW (widget);
5664
5665   gtk_widget_queue_draw (widget);
5666
5667   /* destroy interactive search dialog */
5668   if (tree_view->priv->search_window)
5669     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5670                                       gdk_event_get_device ((GdkEvent *) event));
5671
5672   return FALSE;
5673 }
5674
5675
5676 /* Incremental Reflow
5677  */
5678
5679 static void
5680 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5681                                  GtkRBTree   *tree,
5682                                  GtkRBNode   *node)
5683 {
5684   GtkAllocation allocation;
5685   gint y;
5686
5687   y = _gtk_rbtree_node_find_offset (tree, node)
5688     - tree_view->priv->vadjustment->value
5689     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5690
5691   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5692   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5693                               0, y,
5694                               allocation.width,
5695                               GTK_RBNODE_GET_HEIGHT (node));
5696 }
5697
5698 static gboolean
5699 node_is_visible (GtkTreeView *tree_view,
5700                  GtkRBTree   *tree,
5701                  GtkRBNode   *node)
5702 {
5703   int y;
5704   int height;
5705
5706   y = _gtk_rbtree_node_find_offset (tree, node);
5707   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5708
5709   if (y >= tree_view->priv->vadjustment->value &&
5710       y + height <= (tree_view->priv->vadjustment->value
5711                      + tree_view->priv->vadjustment->page_size))
5712     return TRUE;
5713
5714   return FALSE;
5715 }
5716
5717 /* Returns TRUE if it updated the size
5718  */
5719 static gboolean
5720 validate_row (GtkTreeView *tree_view,
5721               GtkRBTree   *tree,
5722               GtkRBNode   *node,
5723               GtkTreeIter *iter,
5724               GtkTreePath *path)
5725 {
5726   GtkTreeViewColumn *column;
5727   GList *list, *first_column, *last_column;
5728   gint height = 0;
5729   gint horizontal_separator;
5730   gint vertical_separator;
5731   gint focus_line_width;
5732   gint depth = gtk_tree_path_get_depth (path);
5733   gboolean retval = FALSE;
5734   gboolean is_separator = FALSE;
5735   gboolean draw_vgrid_lines, draw_hgrid_lines;
5736   gint focus_pad;
5737   gint grid_line_width;
5738   gboolean wide_separators;
5739   gint separator_height;
5740
5741   /* double check the row needs validating */
5742   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5743       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5744     return FALSE;
5745
5746   is_separator = row_is_separator (tree_view, iter, NULL);
5747
5748   gtk_widget_style_get (GTK_WIDGET (tree_view),
5749                         "focus-padding", &focus_pad,
5750                         "focus-line-width", &focus_line_width,
5751                         "horizontal-separator", &horizontal_separator,
5752                         "vertical-separator", &vertical_separator,
5753                         "grid-line-width", &grid_line_width,
5754                         "wide-separators",  &wide_separators,
5755                         "separator-height", &separator_height,
5756                         NULL);
5757
5758   draw_vgrid_lines =
5759     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5760     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5761   draw_hgrid_lines =
5762     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5763     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5764
5765   for (last_column = g_list_last (tree_view->priv->columns);
5766        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5767        last_column = last_column->prev)
5768     ;
5769
5770   for (first_column = g_list_first (tree_view->priv->columns);
5771        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5772        first_column = first_column->next)
5773     ;
5774
5775   for (list = tree_view->priv->columns; list; list = list->next)
5776     {
5777       gint tmp_width;
5778       gint tmp_height;
5779
5780       column = list->data;
5781
5782       if (! column->visible)
5783         continue;
5784
5785       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5786         continue;
5787
5788       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5789                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5790                                                node->children?TRUE:FALSE);
5791       gtk_tree_view_column_cell_get_size (column,
5792                                           NULL, NULL, NULL,
5793                                           &tmp_width, &tmp_height);
5794
5795       if (!is_separator)
5796         {
5797           tmp_height += vertical_separator;
5798           height = MAX (height, tmp_height);
5799           height = MAX (height, tree_view->priv->expander_size);
5800         }
5801       else
5802         {
5803           if (wide_separators)
5804             height = separator_height + 2 * focus_pad;
5805           else
5806             height = 2 + 2 * focus_pad;
5807         }
5808
5809       if (gtk_tree_view_is_expander_column (tree_view, column))
5810         {
5811           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5812
5813           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5814             tmp_width += depth * tree_view->priv->expander_size;
5815         }
5816       else
5817         tmp_width = tmp_width + horizontal_separator;
5818
5819       if (draw_vgrid_lines)
5820         {
5821           if (list->data == first_column || list->data == last_column)
5822             tmp_width += grid_line_width / 2.0;
5823           else
5824             tmp_width += grid_line_width;
5825         }
5826
5827       if (tmp_width > column->requested_width)
5828         {
5829           retval = TRUE;
5830           column->requested_width = tmp_width;
5831         }
5832     }
5833
5834   if (draw_hgrid_lines)
5835     height += grid_line_width;
5836
5837   if (height != GTK_RBNODE_GET_HEIGHT (node))
5838     {
5839       retval = TRUE;
5840       _gtk_rbtree_node_set_height (tree, node, height);
5841     }
5842   _gtk_rbtree_node_mark_valid (tree, node);
5843   tree_view->priv->post_validation_flag = TRUE;
5844
5845   return retval;
5846 }
5847
5848
5849 static void
5850 validate_visible_area (GtkTreeView *tree_view)
5851 {
5852   GtkAllocation allocation;
5853   GtkTreePath *path = NULL;
5854   GtkTreePath *above_path = NULL;
5855   GtkTreeIter iter;
5856   GtkRBTree *tree = NULL;
5857   GtkRBNode *node = NULL;
5858   gboolean need_redraw = FALSE;
5859   gboolean size_changed = FALSE;
5860   gint total_height;
5861   gint area_above = 0;
5862   gint area_below = 0;
5863
5864   if (tree_view->priv->tree == NULL)
5865     return;
5866
5867   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5868       tree_view->priv->scroll_to_path == NULL)
5869     return;
5870
5871   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5872   total_height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5873
5874   if (total_height == 0)
5875     return;
5876
5877   /* First, we check to see if we need to scroll anywhere
5878    */
5879   if (tree_view->priv->scroll_to_path)
5880     {
5881       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5882       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5883         {
5884           /* we are going to scroll, and will update dy */
5885           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5886           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5887               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5888             {
5889               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5890               if (validate_row (tree_view, tree, node, &iter, path))
5891                 size_changed = TRUE;
5892             }
5893
5894           if (tree_view->priv->scroll_to_use_align)
5895             {
5896               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5897               area_above = (total_height - height) *
5898                 tree_view->priv->scroll_to_row_align;
5899               area_below = total_height - area_above - height;
5900               area_above = MAX (area_above, 0);
5901               area_below = MAX (area_below, 0);
5902             }
5903           else
5904             {
5905               /* two cases:
5906                * 1) row not visible
5907                * 2) row visible
5908                */
5909               gint dy;
5910               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5911
5912               dy = _gtk_rbtree_node_find_offset (tree, node);
5913
5914               if (dy >= tree_view->priv->vadjustment->value &&
5915                   dy + height <= (tree_view->priv->vadjustment->value
5916                                   + tree_view->priv->vadjustment->page_size))
5917                 {
5918                   /* row visible: keep the row at the same position */
5919                   area_above = dy - tree_view->priv->vadjustment->value;
5920                   area_below = (tree_view->priv->vadjustment->value +
5921                                 tree_view->priv->vadjustment->page_size)
5922                                - dy - height;
5923                 }
5924               else
5925                 {
5926                   /* row not visible */
5927                   if (dy >= 0
5928                       && dy + height <= tree_view->priv->vadjustment->page_size)
5929                     {
5930                       /* row at the beginning -- fixed */
5931                       area_above = dy;
5932                       area_below = tree_view->priv->vadjustment->page_size
5933                                    - area_above - height;
5934                     }
5935                   else if (dy >= (tree_view->priv->vadjustment->upper -
5936                                   tree_view->priv->vadjustment->page_size))
5937                     {
5938                       /* row at the end -- fixed */
5939                       area_above = dy - (tree_view->priv->vadjustment->upper -
5940                                    tree_view->priv->vadjustment->page_size);
5941                       area_below = tree_view->priv->vadjustment->page_size -
5942                                    area_above - height;
5943
5944                       if (area_below < 0)
5945                         {
5946                           area_above = tree_view->priv->vadjustment->page_size - height;
5947                           area_below = 0;
5948                         }
5949                     }
5950                   else
5951                     {
5952                       /* row somewhere in the middle, bring it to the top
5953                        * of the view
5954                        */
5955                       area_above = 0;
5956                       area_below = total_height - height;
5957                     }
5958                 }
5959             }
5960         }
5961       else
5962         /* the scroll to isn't valid; ignore it.
5963          */
5964         {
5965           if (tree_view->priv->scroll_to_path && !path)
5966             {
5967               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5968               tree_view->priv->scroll_to_path = NULL;
5969             }
5970           if (path)
5971             gtk_tree_path_free (path);
5972           path = NULL;
5973         }
5974     }
5975
5976   /* We didn't have a scroll_to set, so we just handle things normally
5977    */
5978   if (path == NULL)
5979     {
5980       gint offset;
5981
5982       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5983                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5984                                         &tree, &node);
5985       if (node == NULL)
5986         {
5987           /* In this case, nothing has been validated */
5988           path = gtk_tree_path_new_first ();
5989           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5990         }
5991       else
5992         {
5993           path = _gtk_tree_view_find_path (tree_view, tree, node);
5994           total_height += offset;
5995         }
5996
5997       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5998
5999       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6000           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6001         {
6002           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6003           if (validate_row (tree_view, tree, node, &iter, path))
6004             size_changed = TRUE;
6005         }
6006       area_above = 0;
6007       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6008     }
6009
6010   above_path = gtk_tree_path_copy (path);
6011
6012   /* if we do not validate any row above the new top_row, we will make sure
6013    * that the row immediately above top_row has been validated. (if we do not
6014    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6015    * when invalidated that row's height will be zero. and this will mess up
6016    * scrolling).
6017    */
6018   if (area_above == 0)
6019     {
6020       GtkRBTree *tmptree;
6021       GtkRBNode *tmpnode;
6022
6023       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6024       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6025
6026       if (tmpnode)
6027         {
6028           GtkTreePath *tmppath;
6029           GtkTreeIter tmpiter;
6030
6031           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6032           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6033
6034           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6035               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6036             {
6037               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6038               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6039                 size_changed = TRUE;
6040             }
6041
6042           gtk_tree_path_free (tmppath);
6043         }
6044     }
6045
6046   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6047    * backwards is much slower then forward, as there is no iter_prev function.
6048    * We go forwards first in case we run out of tree.  Then we go backwards to
6049    * fill out the top.
6050    */
6051   while (node && area_below > 0)
6052     {
6053       if (node->children)
6054         {
6055           GtkTreeIter parent = iter;
6056           gboolean has_child;
6057
6058           tree = node->children;
6059           node = tree->root;
6060
6061           g_assert (node != tree->nil);
6062
6063           while (node->left != tree->nil)
6064             node = node->left;
6065           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6066                                                     &iter,
6067                                                     &parent);
6068           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6069           gtk_tree_path_down (path);
6070         }
6071       else
6072         {
6073           gboolean done = FALSE;
6074           do
6075             {
6076               node = _gtk_rbtree_next (tree, node);
6077               if (node != NULL)
6078                 {
6079                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6080                   done = TRUE;
6081                   gtk_tree_path_next (path);
6082
6083                   /* Sanity Check! */
6084                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6085                 }
6086               else
6087                 {
6088                   GtkTreeIter parent_iter = iter;
6089                   gboolean has_parent;
6090
6091                   node = tree->parent_node;
6092                   tree = tree->parent_tree;
6093                   if (tree == NULL)
6094                     break;
6095                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6096                                                            &iter,
6097                                                            &parent_iter);
6098                   gtk_tree_path_up (path);
6099
6100                   /* Sanity check */
6101                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6102                 }
6103             }
6104           while (!done);
6105         }
6106
6107       if (!node)
6108         break;
6109
6110       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6111           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6112         {
6113           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6114           if (validate_row (tree_view, tree, node, &iter, path))
6115               size_changed = TRUE;
6116         }
6117
6118       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6119     }
6120   gtk_tree_path_free (path);
6121
6122   /* If we ran out of tree, and have extra area_below left, we need to add it
6123    * to area_above */
6124   if (area_below > 0)
6125     area_above += area_below;
6126
6127   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6128
6129   /* We walk backwards */
6130   while (area_above > 0)
6131     {
6132       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6133
6134       /* Always find the new path in the tree.  We cannot just assume
6135        * a gtk_tree_path_prev() is enough here, as there might be children
6136        * in between this node and the previous sibling node.  If this
6137        * appears to be a performance hotspot in profiles, we can look into
6138        * intrigate logic for keeping path, node and iter in sync like
6139        * we do for forward walks.  (Which will be hard because of the lacking
6140        * iter_prev).
6141        */
6142
6143       if (node == NULL)
6144         break;
6145
6146       gtk_tree_path_free (above_path);
6147       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6148
6149       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6150
6151       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6152           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6153         {
6154           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6155           if (validate_row (tree_view, tree, node, &iter, above_path))
6156             size_changed = TRUE;
6157         }
6158       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6159     }
6160
6161   /* if we scrolled to a path, we need to set the dy here,
6162    * and sync the top row accordingly
6163    */
6164   if (tree_view->priv->scroll_to_path)
6165     {
6166       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6167       gtk_tree_view_top_row_to_dy (tree_view);
6168
6169       need_redraw = TRUE;
6170     }
6171   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6172     {
6173       /* when we are not scrolling, we should never set dy to something
6174        * else than zero. we update top_row to be in sync with dy = 0.
6175        */
6176       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6177       gtk_tree_view_dy_to_top_row (tree_view);
6178     }
6179   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6180     {
6181       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6182       gtk_tree_view_dy_to_top_row (tree_view);
6183     }
6184   else
6185     gtk_tree_view_top_row_to_dy (tree_view);
6186
6187   /* update width/height and queue a resize */
6188   if (size_changed)
6189     {
6190       GtkRequisition requisition;
6191
6192       /* We temporarily guess a size, under the assumption that it will be the
6193        * same when we get our next size_allocate.  If we don't do this, we'll be
6194        * in an inconsistent state if we call top_row_to_dy. */
6195
6196       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6197                                  &requisition, NULL);
6198       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6199       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6200       gtk_adjustment_changed (tree_view->priv->hadjustment);
6201       gtk_adjustment_changed (tree_view->priv->vadjustment);
6202       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6203     }
6204
6205   if (tree_view->priv->scroll_to_path)
6206     {
6207       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6208       tree_view->priv->scroll_to_path = NULL;
6209     }
6210
6211   if (above_path)
6212     gtk_tree_path_free (above_path);
6213
6214   if (tree_view->priv->scroll_to_column)
6215     {
6216       tree_view->priv->scroll_to_column = NULL;
6217     }
6218   if (need_redraw)
6219     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6220 }
6221
6222 static void
6223 initialize_fixed_height_mode (GtkTreeView *tree_view)
6224 {
6225   if (!tree_view->priv->tree)
6226     return;
6227
6228   if (tree_view->priv->fixed_height < 0)
6229     {
6230       GtkTreeIter iter;
6231       GtkTreePath *path;
6232
6233       GtkRBTree *tree = NULL;
6234       GtkRBNode *node = NULL;
6235
6236       tree = tree_view->priv->tree;
6237       node = tree->root;
6238
6239       path = _gtk_tree_view_find_path (tree_view, tree, node);
6240       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6241
6242       validate_row (tree_view, tree, node, &iter, path);
6243
6244       gtk_tree_path_free (path);
6245
6246       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6247     }
6248
6249    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6250                                  tree_view->priv->fixed_height, TRUE);
6251 }
6252
6253 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6254  * the left-most uninvalidated node.  We then try walking right, validating
6255  * nodes.  Once we find a valid node, we repeat the previous process of finding
6256  * the first invalid node.
6257  */
6258
6259 static gboolean
6260 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6261 {
6262   GtkRBTree *tree = NULL;
6263   GtkRBNode *node = NULL;
6264   gboolean validated_area = FALSE;
6265   gint retval = TRUE;
6266   GtkTreePath *path = NULL;
6267   GtkTreeIter iter;
6268   GTimer *timer;
6269   gint i = 0;
6270
6271   gint prev_height = -1;
6272   gboolean fixed_height = TRUE;
6273
6274   g_assert (tree_view);
6275
6276   if (tree_view->priv->tree == NULL)
6277       return FALSE;
6278
6279   if (tree_view->priv->fixed_height_mode)
6280     {
6281       if (tree_view->priv->fixed_height < 0)
6282         initialize_fixed_height_mode (tree_view);
6283
6284       return FALSE;
6285     }
6286
6287   timer = g_timer_new ();
6288   g_timer_start (timer);
6289
6290   do
6291     {
6292       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6293         {
6294           retval = FALSE;
6295           goto done;
6296         }
6297
6298       if (path != NULL)
6299         {
6300           node = _gtk_rbtree_next (tree, node);
6301           if (node != NULL)
6302             {
6303               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6304               gtk_tree_path_next (path);
6305             }
6306           else
6307             {
6308               gtk_tree_path_free (path);
6309               path = NULL;
6310             }
6311         }
6312
6313       if (path == NULL)
6314         {
6315           tree = tree_view->priv->tree;
6316           node = tree_view->priv->tree->root;
6317
6318           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6319
6320           do
6321             {
6322               if (node->left != tree->nil &&
6323                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6324                 {
6325                   node = node->left;
6326                 }
6327               else if (node->right != tree->nil &&
6328                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6329                 {
6330                   node = node->right;
6331                 }
6332               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6333                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6334                 {
6335                   break;
6336                 }
6337               else if (node->children != NULL)
6338                 {
6339                   tree = node->children;
6340                   node = tree->root;
6341                 }
6342               else
6343                 /* RBTree corruption!  All bad */
6344                 g_assert_not_reached ();
6345             }
6346           while (TRUE);
6347           path = _gtk_tree_view_find_path (tree_view, tree, node);
6348           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6349         }
6350
6351       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6352                        validated_area;
6353
6354       if (!tree_view->priv->fixed_height_check)
6355         {
6356           gint height;
6357
6358           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6359           if (prev_height < 0)
6360             prev_height = height;
6361           else if (prev_height != height)
6362             fixed_height = FALSE;
6363         }
6364
6365       i++;
6366     }
6367   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6368
6369   if (!tree_view->priv->fixed_height_check)
6370    {
6371      if (fixed_height)
6372        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6373
6374      tree_view->priv->fixed_height_check = 1;
6375    }
6376
6377  done:
6378   if (validated_area)
6379     {
6380       GtkRequisition requisition;
6381       /* We temporarily guess a size, under the assumption that it will be the
6382        * same when we get our next size_allocate.  If we don't do this, we'll be
6383        * in an inconsistent state when we call top_row_to_dy. */
6384
6385       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6386                                  &requisition, NULL);
6387       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6388       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6389       gtk_adjustment_changed (tree_view->priv->hadjustment);
6390       gtk_adjustment_changed (tree_view->priv->vadjustment);
6391
6392       if (queue_resize)
6393         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6394     }
6395
6396   if (path) gtk_tree_path_free (path);
6397   g_timer_destroy (timer);
6398
6399   return retval;
6400 }
6401
6402 static gboolean
6403 validate_rows (GtkTreeView *tree_view)
6404 {
6405   gboolean retval;
6406
6407   retval = do_validate_rows (tree_view, TRUE);
6408
6409   if (! retval && tree_view->priv->validate_rows_timer)
6410     {
6411       g_source_remove (tree_view->priv->validate_rows_timer);
6412       tree_view->priv->validate_rows_timer = 0;
6413     }
6414
6415   return retval;
6416 }
6417
6418 static gboolean
6419 validate_rows_handler (GtkTreeView *tree_view)
6420 {
6421   gboolean retval;
6422
6423   retval = do_validate_rows (tree_view, TRUE);
6424   if (! retval && tree_view->priv->validate_rows_timer)
6425     {
6426       g_source_remove (tree_view->priv->validate_rows_timer);
6427       tree_view->priv->validate_rows_timer = 0;
6428     }
6429
6430   return retval;
6431 }
6432
6433 static gboolean
6434 do_presize_handler (GtkTreeView *tree_view)
6435 {
6436   if (tree_view->priv->mark_rows_col_dirty)
6437     {
6438       if (tree_view->priv->tree)
6439         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6440       tree_view->priv->mark_rows_col_dirty = FALSE;
6441     }
6442   validate_visible_area (tree_view);
6443   tree_view->priv->presize_handler_timer = 0;
6444
6445   if (tree_view->priv->fixed_height_mode)
6446     {
6447       GtkRequisition requisition;
6448
6449       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6450                                  &requisition, NULL);
6451
6452       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6453       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6454       gtk_adjustment_changed (tree_view->priv->hadjustment);
6455       gtk_adjustment_changed (tree_view->priv->vadjustment);
6456       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6457     }
6458
6459   return FALSE;
6460 }
6461
6462 static gboolean
6463 presize_handler_callback (gpointer data)
6464 {
6465   do_presize_handler (GTK_TREE_VIEW (data));
6466
6467   return FALSE;
6468 }
6469
6470 static void
6471 install_presize_handler (GtkTreeView *tree_view)
6472 {
6473   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6474     return;
6475
6476   if (! tree_view->priv->presize_handler_timer)
6477     {
6478       tree_view->priv->presize_handler_timer =
6479         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6480     }
6481   if (! tree_view->priv->validate_rows_timer)
6482     {
6483       tree_view->priv->validate_rows_timer =
6484         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6485     }
6486 }
6487
6488 static gboolean
6489 scroll_sync_handler (GtkTreeView *tree_view)
6490 {
6491   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6492     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6493   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6494     gtk_tree_view_top_row_to_dy (tree_view);
6495   else
6496     gtk_tree_view_dy_to_top_row (tree_view);
6497
6498   tree_view->priv->scroll_sync_timer = 0;
6499
6500   return FALSE;
6501 }
6502
6503 static void
6504 install_scroll_sync_handler (GtkTreeView *tree_view)
6505 {
6506   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6507     return;
6508
6509   if (!tree_view->priv->scroll_sync_timer)
6510     {
6511       tree_view->priv->scroll_sync_timer =
6512         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6513     }
6514 }
6515
6516 static void
6517 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6518                            GtkTreePath *path,
6519                            gint         offset)
6520 {
6521   gtk_tree_row_reference_free (tree_view->priv->top_row);
6522
6523   if (!path)
6524     {
6525       tree_view->priv->top_row = NULL;
6526       tree_view->priv->top_row_dy = 0;
6527     }
6528   else
6529     {
6530       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6531       tree_view->priv->top_row_dy = offset;
6532     }
6533 }
6534
6535 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6536  * it's set to be NULL, and top_row_dy is 0;
6537  */
6538 static void
6539 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6540 {
6541   gint offset;
6542   GtkTreePath *path;
6543   GtkRBTree *tree;
6544   GtkRBNode *node;
6545
6546   if (tree_view->priv->tree == NULL)
6547     {
6548       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6549     }
6550   else
6551     {
6552       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6553                                         tree_view->priv->dy,
6554                                         &tree, &node);
6555
6556       if (tree == NULL)
6557         {
6558           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6559         }
6560       else
6561         {
6562           path = _gtk_tree_view_find_path (tree_view, tree, node);
6563           gtk_tree_view_set_top_row (tree_view, path, offset);
6564           gtk_tree_path_free (path);
6565         }
6566     }
6567 }
6568
6569 static void
6570 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6571 {
6572   GtkTreePath *path;
6573   GtkRBTree *tree;
6574   GtkRBNode *node;
6575   int new_dy;
6576
6577   /* Avoid recursive calls */
6578   if (tree_view->priv->in_top_row_to_dy)
6579     return;
6580
6581   if (tree_view->priv->top_row)
6582     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6583   else
6584     path = NULL;
6585
6586   if (!path)
6587     tree = NULL;
6588   else
6589     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6590
6591   if (path)
6592     gtk_tree_path_free (path);
6593
6594   if (tree == NULL)
6595     {
6596       /* keep dy and set new toprow */
6597       gtk_tree_row_reference_free (tree_view->priv->top_row);
6598       tree_view->priv->top_row = NULL;
6599       tree_view->priv->top_row_dy = 0;
6600       /* DO NOT install the idle handler */
6601       gtk_tree_view_dy_to_top_row (tree_view);
6602       return;
6603     }
6604
6605   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6606       < tree_view->priv->top_row_dy)
6607     {
6608       /* new top row -- do NOT install the idle handler */
6609       gtk_tree_view_dy_to_top_row (tree_view);
6610       return;
6611     }
6612
6613   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6614   new_dy += tree_view->priv->top_row_dy;
6615
6616   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6617     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6618
6619   new_dy = MAX (0, new_dy);
6620
6621   tree_view->priv->in_top_row_to_dy = TRUE;
6622   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6623   tree_view->priv->in_top_row_to_dy = FALSE;
6624 }
6625
6626
6627 void
6628 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6629 {
6630   tree_view->priv->mark_rows_col_dirty = TRUE;
6631
6632   install_presize_handler (tree_view);
6633 }
6634
6635 /*
6636  * This function works synchronously (due to the while (validate_rows...)
6637  * loop).
6638  *
6639  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6640  * here. You now need to check that yourself.
6641  */
6642 void
6643 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6644                                 GtkTreeViewColumn *column)
6645 {
6646   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6647   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6648
6649   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6650
6651   do_presize_handler (tree_view);
6652   while (validate_rows (tree_view));
6653
6654   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6655 }
6656
6657 /* Drag-and-drop */
6658
6659 static void
6660 set_source_row (GdkDragContext *context,
6661                 GtkTreeModel   *model,
6662                 GtkTreePath    *source_row)
6663 {
6664   g_object_set_data_full (G_OBJECT (context),
6665                           I_("gtk-tree-view-source-row"),
6666                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6667                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6668 }
6669
6670 static GtkTreePath*
6671 get_source_row (GdkDragContext *context)
6672 {
6673   GtkTreeRowReference *ref =
6674     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6675
6676   if (ref)
6677     return gtk_tree_row_reference_get_path (ref);
6678   else
6679     return NULL;
6680 }
6681
6682 typedef struct
6683 {
6684   GtkTreeRowReference *dest_row;
6685   guint                path_down_mode   : 1;
6686   guint                empty_view_drop  : 1;
6687   guint                drop_append_mode : 1;
6688 }
6689 DestRow;
6690
6691 static void
6692 dest_row_free (gpointer data)
6693 {
6694   DestRow *dr = (DestRow *)data;
6695
6696   gtk_tree_row_reference_free (dr->dest_row);
6697   g_slice_free (DestRow, dr);
6698 }
6699
6700 static void
6701 set_dest_row (GdkDragContext *context,
6702               GtkTreeModel   *model,
6703               GtkTreePath    *dest_row,
6704               gboolean        path_down_mode,
6705               gboolean        empty_view_drop,
6706               gboolean        drop_append_mode)
6707 {
6708   DestRow *dr;
6709
6710   if (!dest_row)
6711     {
6712       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6713                               NULL, NULL);
6714       return;
6715     }
6716
6717   dr = g_slice_new (DestRow);
6718
6719   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6720   dr->path_down_mode = path_down_mode != FALSE;
6721   dr->empty_view_drop = empty_view_drop != FALSE;
6722   dr->drop_append_mode = drop_append_mode != FALSE;
6723
6724   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6725                           dr, (GDestroyNotify) dest_row_free);
6726 }
6727
6728 static GtkTreePath*
6729 get_dest_row (GdkDragContext *context,
6730               gboolean       *path_down_mode)
6731 {
6732   DestRow *dr =
6733     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6734
6735   if (dr)
6736     {
6737       GtkTreePath *path = NULL;
6738
6739       if (path_down_mode)
6740         *path_down_mode = dr->path_down_mode;
6741
6742       if (dr->dest_row)
6743         path = gtk_tree_row_reference_get_path (dr->dest_row);
6744       else if (dr->empty_view_drop)
6745         path = gtk_tree_path_new_from_indices (0, -1);
6746       else
6747         path = NULL;
6748
6749       if (path && dr->drop_append_mode)
6750         gtk_tree_path_next (path);
6751
6752       return path;
6753     }
6754   else
6755     return NULL;
6756 }
6757
6758 /* Get/set whether drag_motion requested the drag data and
6759  * drag_data_received should thus not actually insert the data,
6760  * since the data doesn't result from a drop.
6761  */
6762 static void
6763 set_status_pending (GdkDragContext *context,
6764                     GdkDragAction   suggested_action)
6765 {
6766   g_object_set_data (G_OBJECT (context),
6767                      I_("gtk-tree-view-status-pending"),
6768                      GINT_TO_POINTER (suggested_action));
6769 }
6770
6771 static GdkDragAction
6772 get_status_pending (GdkDragContext *context)
6773 {
6774   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6775                                              "gtk-tree-view-status-pending"));
6776 }
6777
6778 static TreeViewDragInfo*
6779 get_info (GtkTreeView *tree_view)
6780 {
6781   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6782 }
6783
6784 static void
6785 destroy_info (TreeViewDragInfo *di)
6786 {
6787   g_slice_free (TreeViewDragInfo, di);
6788 }
6789
6790 static TreeViewDragInfo*
6791 ensure_info (GtkTreeView *tree_view)
6792 {
6793   TreeViewDragInfo *di;
6794
6795   di = get_info (tree_view);
6796
6797   if (di == NULL)
6798     {
6799       di = g_slice_new0 (TreeViewDragInfo);
6800
6801       g_object_set_data_full (G_OBJECT (tree_view),
6802                               I_("gtk-tree-view-drag-info"),
6803                               di,
6804                               (GDestroyNotify) destroy_info);
6805     }
6806
6807   return di;
6808 }
6809
6810 static void
6811 remove_info (GtkTreeView *tree_view)
6812 {
6813   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6814 }
6815
6816 #if 0
6817 static gint
6818 drag_scan_timeout (gpointer data)
6819 {
6820   GtkTreeView *tree_view;
6821   gint x, y;
6822   GdkModifierType state;
6823   GtkTreePath *path = NULL;
6824   GtkTreeViewColumn *column = NULL;
6825   GdkRectangle visible_rect;
6826
6827   GDK_THREADS_ENTER ();
6828
6829   tree_view = GTK_TREE_VIEW (data);
6830
6831   gdk_window_get_pointer (tree_view->priv->bin_window,
6832                           &x, &y, &state);
6833
6834   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6835
6836   /* See if we are near the edge. */
6837   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6838       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6839       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6840       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6841     {
6842       gtk_tree_view_get_path_at_pos (tree_view,
6843                                      tree_view->priv->bin_window,
6844                                      x, y,
6845                                      &path,
6846                                      &column,
6847                                      NULL,
6848                                      NULL);
6849
6850       if (path != NULL)
6851         {
6852           gtk_tree_view_scroll_to_cell (tree_view,
6853                                         path,
6854                                         column,
6855                                         TRUE,
6856                                         0.5, 0.5);
6857
6858           gtk_tree_path_free (path);
6859         }
6860     }
6861
6862   GDK_THREADS_LEAVE ();
6863
6864   return TRUE;
6865 }
6866 #endif /* 0 */
6867
6868 static void
6869 add_scroll_timeout (GtkTreeView *tree_view)
6870 {
6871   if (tree_view->priv->scroll_timeout == 0)
6872     {
6873       tree_view->priv->scroll_timeout =
6874         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6875     }
6876 }
6877
6878 static void
6879 remove_scroll_timeout (GtkTreeView *tree_view)
6880 {
6881   if (tree_view->priv->scroll_timeout != 0)
6882     {
6883       g_source_remove (tree_view->priv->scroll_timeout);
6884       tree_view->priv->scroll_timeout = 0;
6885     }
6886 }
6887
6888 static gboolean
6889 check_model_dnd (GtkTreeModel *model,
6890                  GType         required_iface,
6891                  const gchar  *signal)
6892 {
6893   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6894     {
6895       g_warning ("You must override the default '%s' handler "
6896                  "on GtkTreeView when using models that don't support "
6897                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6898                  "is to connect to '%s' and call "
6899                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6900                  "the default handler from running. Look at the source code "
6901                  "for the default handler in gtktreeview.c to get an idea what "
6902                  "your handler should do. (gtktreeview.c is in the GTK source "
6903                  "code.) If you're using GTK from a language other than C, "
6904                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6905                  signal, g_type_name (required_iface), signal);
6906       return FALSE;
6907     }
6908   else
6909     return TRUE;
6910 }
6911
6912 static void
6913 remove_open_timeout (GtkTreeView *tree_view)
6914 {
6915   if (tree_view->priv->open_dest_timeout != 0)
6916     {
6917       g_source_remove (tree_view->priv->open_dest_timeout);
6918       tree_view->priv->open_dest_timeout = 0;
6919     }
6920 }
6921
6922
6923 static gint
6924 open_row_timeout (gpointer data)
6925 {
6926   GtkTreeView *tree_view = data;
6927   GtkTreePath *dest_path = NULL;
6928   GtkTreeViewDropPosition pos;
6929   gboolean result = FALSE;
6930
6931   gtk_tree_view_get_drag_dest_row (tree_view,
6932                                    &dest_path,
6933                                    &pos);
6934
6935   if (dest_path &&
6936       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6937        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6938     {
6939       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6940       tree_view->priv->open_dest_timeout = 0;
6941
6942       gtk_tree_path_free (dest_path);
6943     }
6944   else
6945     {
6946       if (dest_path)
6947         gtk_tree_path_free (dest_path);
6948
6949       result = TRUE;
6950     }
6951
6952   return result;
6953 }
6954
6955 static gboolean
6956 scroll_row_timeout (gpointer data)
6957 {
6958   GtkTreeView *tree_view = data;
6959
6960   gtk_tree_view_vertical_autoscroll (tree_view);
6961
6962   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6963     gtk_tree_view_update_rubber_band (tree_view);
6964
6965   return TRUE;
6966 }
6967
6968 /* Returns TRUE if event should not be propagated to parent widgets */
6969 static gboolean
6970 set_destination_row (GtkTreeView    *tree_view,
6971                      GdkDragContext *context,
6972                      /* coordinates relative to the widget */
6973                      gint            x,
6974                      gint            y,
6975                      GdkDragAction  *suggested_action,
6976                      GdkAtom        *target)
6977 {
6978   GtkTreePath *path = NULL;
6979   GtkTreeViewDropPosition pos;
6980   GtkTreeViewDropPosition old_pos;
6981   TreeViewDragInfo *di;
6982   GtkWidget *widget;
6983   GtkTreePath *old_dest_path = NULL;
6984   gboolean can_drop = FALSE;
6985
6986   *suggested_action = 0;
6987   *target = GDK_NONE;
6988
6989   widget = GTK_WIDGET (tree_view);
6990
6991   di = get_info (tree_view);
6992
6993   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6994     {
6995       /* someone unset us as a drag dest, note that if
6996        * we return FALSE drag_leave isn't called
6997        */
6998
6999       gtk_tree_view_set_drag_dest_row (tree_view,
7000                                        NULL,
7001                                        GTK_TREE_VIEW_DROP_BEFORE);
7002
7003       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7004       remove_open_timeout (GTK_TREE_VIEW (widget));
7005
7006       return FALSE; /* no longer a drop site */
7007     }
7008
7009   *target = gtk_drag_dest_find_target (widget, context,
7010                                        gtk_drag_dest_get_target_list (widget));
7011   if (*target == GDK_NONE)
7012     {
7013       return FALSE;
7014     }
7015
7016   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7017                                           x, y,
7018                                           &path,
7019                                           &pos))
7020     {
7021       gint n_children;
7022       GtkTreeModel *model;
7023
7024       remove_open_timeout (tree_view);
7025
7026       /* the row got dropped on empty space, let's setup a special case
7027        */
7028
7029       if (path)
7030         gtk_tree_path_free (path);
7031
7032       model = gtk_tree_view_get_model (tree_view);
7033
7034       n_children = gtk_tree_model_iter_n_children (model, NULL);
7035       if (n_children)
7036         {
7037           pos = GTK_TREE_VIEW_DROP_AFTER;
7038           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7039         }
7040       else
7041         {
7042           pos = GTK_TREE_VIEW_DROP_BEFORE;
7043           path = gtk_tree_path_new_from_indices (0, -1);
7044         }
7045
7046       can_drop = TRUE;
7047
7048       goto out;
7049     }
7050
7051   g_assert (path);
7052
7053   /* If we left the current row's "open" zone, unset the timeout for
7054    * opening the row
7055    */
7056   gtk_tree_view_get_drag_dest_row (tree_view,
7057                                    &old_dest_path,
7058                                    &old_pos);
7059
7060   if (old_dest_path &&
7061       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7062        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7063          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7064     remove_open_timeout (tree_view);
7065
7066   if (old_dest_path)
7067     gtk_tree_path_free (old_dest_path);
7068
7069   if (TRUE /* FIXME if the location droppable predicate */)
7070     {
7071       can_drop = TRUE;
7072     }
7073
7074 out:
7075   if (can_drop)
7076     {
7077       GtkWidget *source_widget;
7078
7079       *suggested_action = context->suggested_action;
7080       source_widget = gtk_drag_get_source_widget (context);
7081
7082       if (source_widget == widget)
7083         {
7084           /* Default to MOVE, unless the user has
7085            * pressed ctrl or shift to affect available actions
7086            */
7087           if ((context->actions & GDK_ACTION_MOVE) != 0)
7088             *suggested_action = GDK_ACTION_MOVE;
7089         }
7090
7091       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7092                                        path, pos);
7093     }
7094   else
7095     {
7096       /* can't drop here */
7097       remove_open_timeout (tree_view);
7098
7099       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7100                                        NULL,
7101                                        GTK_TREE_VIEW_DROP_BEFORE);
7102     }
7103
7104   if (path)
7105     gtk_tree_path_free (path);
7106
7107   return TRUE;
7108 }
7109
7110 static GtkTreePath*
7111 get_logical_dest_row (GtkTreeView *tree_view,
7112                       gboolean    *path_down_mode,
7113                       gboolean    *drop_append_mode)
7114 {
7115   /* adjust path to point to the row the drop goes in front of */
7116   GtkTreePath *path = NULL;
7117   GtkTreeViewDropPosition pos;
7118
7119   g_return_val_if_fail (path_down_mode != NULL, NULL);
7120   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7121
7122   *path_down_mode = FALSE;
7123   *drop_append_mode = 0;
7124
7125   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7126
7127   if (path == NULL)
7128     return NULL;
7129
7130   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7131     ; /* do nothing */
7132   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7133            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7134     *path_down_mode = TRUE;
7135   else
7136     {
7137       GtkTreeIter iter;
7138       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7139
7140       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7141
7142       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7143           !gtk_tree_model_iter_next (model, &iter))
7144         *drop_append_mode = 1;
7145       else
7146         {
7147           *drop_append_mode = 0;
7148           gtk_tree_path_next (path);
7149         }
7150     }
7151
7152   return path;
7153 }
7154
7155 static gboolean
7156 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7157                                         GdkEventMotion   *event)
7158 {
7159   GtkWidget *widget = GTK_WIDGET (tree_view);
7160   GdkDragContext *context;
7161   TreeViewDragInfo *di;
7162   GtkTreePath *path = NULL;
7163   gint button;
7164   gint cell_x, cell_y;
7165   GtkTreeModel *model;
7166   gboolean retval = FALSE;
7167
7168   di = get_info (tree_view);
7169
7170   if (di == NULL || !di->source_set)
7171     goto out;
7172
7173   if (tree_view->priv->pressed_button < 0)
7174     goto out;
7175
7176   if (!gtk_drag_check_threshold (widget,
7177                                  tree_view->priv->press_start_x,
7178                                  tree_view->priv->press_start_y,
7179                                  event->x, event->y))
7180     goto out;
7181
7182   model = gtk_tree_view_get_model (tree_view);
7183
7184   if (model == NULL)
7185     goto out;
7186
7187   button = tree_view->priv->pressed_button;
7188   tree_view->priv->pressed_button = -1;
7189
7190   gtk_tree_view_get_path_at_pos (tree_view,
7191                                  tree_view->priv->press_start_x,
7192                                  tree_view->priv->press_start_y,
7193                                  &path,
7194                                  NULL,
7195                                  &cell_x,
7196                                  &cell_y);
7197
7198   if (path == NULL)
7199     goto out;
7200
7201   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7202       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7203                                            path))
7204     goto out;
7205
7206   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7207     goto out;
7208
7209   /* Now we can begin the drag */
7210
7211   retval = TRUE;
7212
7213   context = gtk_drag_begin (widget,
7214                             gtk_drag_source_get_target_list (widget),
7215                             di->source_actions,
7216                             button,
7217                             (GdkEvent*)event);
7218
7219   set_source_row (context, model, path);
7220
7221  out:
7222   if (path)
7223     gtk_tree_path_free (path);
7224
7225   return retval;
7226 }
7227
7228
7229 static void
7230 gtk_tree_view_drag_begin (GtkWidget      *widget,
7231                           GdkDragContext *context)
7232 {
7233   GtkTreeView *tree_view;
7234   GtkTreePath *path = NULL;
7235   gint cell_x, cell_y;
7236   GdkPixmap *row_pix;
7237   TreeViewDragInfo *di;
7238
7239   tree_view = GTK_TREE_VIEW (widget);
7240
7241   /* if the user uses a custom DND source impl, we don't set the icon here */
7242   di = get_info (tree_view);
7243
7244   if (di == NULL || !di->source_set)
7245     return;
7246
7247   gtk_tree_view_get_path_at_pos (tree_view,
7248                                  tree_view->priv->press_start_x,
7249                                  tree_view->priv->press_start_y,
7250                                  &path,
7251                                  NULL,
7252                                  &cell_x,
7253                                  &cell_y);
7254
7255   g_return_if_fail (path != NULL);
7256
7257   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7258                                                 path);
7259
7260   gtk_drag_set_icon_pixmap (context,
7261                             gdk_drawable_get_colormap (row_pix),
7262                             row_pix,
7263                             NULL,
7264                             /* the + 1 is for the black border in the icon */
7265                             tree_view->priv->press_start_x + 1,
7266                             cell_y + 1);
7267
7268   g_object_unref (row_pix);
7269   gtk_tree_path_free (path);
7270 }
7271
7272 static void
7273 gtk_tree_view_drag_end (GtkWidget      *widget,
7274                         GdkDragContext *context)
7275 {
7276   /* do nothing */
7277 }
7278
7279 /* Default signal implementations for the drag signals */
7280 static void
7281 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7282                              GdkDragContext   *context,
7283                              GtkSelectionData *selection_data,
7284                              guint             info,
7285                              guint             time)
7286 {
7287   GtkTreeView *tree_view;
7288   GtkTreeModel *model;
7289   TreeViewDragInfo *di;
7290   GtkTreePath *source_row;
7291
7292   tree_view = GTK_TREE_VIEW (widget);
7293
7294   model = gtk_tree_view_get_model (tree_view);
7295
7296   if (model == NULL)
7297     return;
7298
7299   di = get_info (GTK_TREE_VIEW (widget));
7300
7301   if (di == NULL)
7302     return;
7303
7304   source_row = get_source_row (context);
7305
7306   if (source_row == NULL)
7307     return;
7308
7309   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7310    * any model; for DragSource models there are some other targets
7311    * we also support.
7312    */
7313
7314   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7315       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7316                                           source_row,
7317                                           selection_data))
7318     goto done;
7319
7320   /* If drag_data_get does nothing, try providing row data. */
7321   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7322     {
7323       gtk_tree_set_row_drag_data (selection_data,
7324                                   model,
7325                                   source_row);
7326     }
7327
7328  done:
7329   gtk_tree_path_free (source_row);
7330 }
7331
7332
7333 static void
7334 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7335                                 GdkDragContext *context)
7336 {
7337   TreeViewDragInfo *di;
7338   GtkTreeModel *model;
7339   GtkTreeView *tree_view;
7340   GtkTreePath *source_row;
7341
7342   tree_view = GTK_TREE_VIEW (widget);
7343   model = gtk_tree_view_get_model (tree_view);
7344
7345   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7346     return;
7347
7348   di = get_info (tree_view);
7349
7350   if (di == NULL)
7351     return;
7352
7353   source_row = get_source_row (context);
7354
7355   if (source_row == NULL)
7356     return;
7357
7358   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7359                                          source_row);
7360
7361   gtk_tree_path_free (source_row);
7362
7363   set_source_row (context, NULL, NULL);
7364 }
7365
7366 static void
7367 gtk_tree_view_drag_leave (GtkWidget      *widget,
7368                           GdkDragContext *context,
7369                           guint             time)
7370 {
7371   /* unset any highlight row */
7372   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7373                                    NULL,
7374                                    GTK_TREE_VIEW_DROP_BEFORE);
7375
7376   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7377   remove_open_timeout (GTK_TREE_VIEW (widget));
7378 }
7379
7380
7381 static gboolean
7382 gtk_tree_view_drag_motion (GtkWidget        *widget,
7383                            GdkDragContext   *context,
7384                            /* coordinates relative to the widget */
7385                            gint              x,
7386                            gint              y,
7387                            guint             time)
7388 {
7389   gboolean empty;
7390   GtkTreePath *path = NULL;
7391   GtkTreeViewDropPosition pos;
7392   GtkTreeView *tree_view;
7393   GdkDragAction suggested_action = 0;
7394   GdkAtom target;
7395
7396   tree_view = GTK_TREE_VIEW (widget);
7397
7398   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7399     return FALSE;
7400
7401   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7402
7403   /* we only know this *after* set_desination_row */
7404   empty = tree_view->priv->empty_view_drop;
7405
7406   if (path == NULL && !empty)
7407     {
7408       /* Can't drop here. */
7409       gdk_drag_status (context, 0, time);
7410     }
7411   else
7412     {
7413       if (tree_view->priv->open_dest_timeout == 0 &&
7414           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7415            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7416         {
7417           tree_view->priv->open_dest_timeout =
7418             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7419         }
7420       else
7421         {
7422           add_scroll_timeout (tree_view);
7423         }
7424
7425       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7426         {
7427           /* Request data so we can use the source row when
7428            * determining whether to accept the drop
7429            */
7430           set_status_pending (context, suggested_action);
7431           gtk_drag_get_data (widget, context, target, time);
7432         }
7433       else
7434         {
7435           set_status_pending (context, 0);
7436           gdk_drag_status (context, suggested_action, time);
7437         }
7438     }
7439
7440   if (path)
7441     gtk_tree_path_free (path);
7442
7443   return TRUE;
7444 }
7445
7446
7447 static gboolean
7448 gtk_tree_view_drag_drop (GtkWidget        *widget,
7449                          GdkDragContext   *context,
7450                          /* coordinates relative to the widget */
7451                          gint              x,
7452                          gint              y,
7453                          guint             time)
7454 {
7455   GtkTreeView *tree_view;
7456   GtkTreePath *path;
7457   GdkDragAction suggested_action = 0;
7458   GdkAtom target = GDK_NONE;
7459   TreeViewDragInfo *di;
7460   GtkTreeModel *model;
7461   gboolean path_down_mode;
7462   gboolean drop_append_mode;
7463
7464   tree_view = GTK_TREE_VIEW (widget);
7465
7466   model = gtk_tree_view_get_model (tree_view);
7467
7468   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7469   remove_open_timeout (GTK_TREE_VIEW (widget));
7470
7471   di = get_info (tree_view);
7472
7473   if (di == NULL)
7474     return FALSE;
7475
7476   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7477     return FALSE;
7478
7479   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7480     return FALSE;
7481
7482   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7483
7484   if (target != GDK_NONE && path != NULL)
7485     {
7486       /* in case a motion had requested drag data, change things so we
7487        * treat drag data receives as a drop.
7488        */
7489       set_status_pending (context, 0);
7490       set_dest_row (context, model, path,
7491                     path_down_mode, tree_view->priv->empty_view_drop,
7492                     drop_append_mode);
7493     }
7494
7495   if (path)
7496     gtk_tree_path_free (path);
7497
7498   /* Unset this thing */
7499   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7500                                    NULL,
7501                                    GTK_TREE_VIEW_DROP_BEFORE);
7502
7503   if (target != GDK_NONE)
7504     {
7505       gtk_drag_get_data (widget, context, target, time);
7506       return TRUE;
7507     }
7508   else
7509     return FALSE;
7510 }
7511
7512 static void
7513 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7514                                   GdkDragContext   *context,
7515                                   /* coordinates relative to the widget */
7516                                   gint              x,
7517                                   gint              y,
7518                                   GtkSelectionData *selection_data,
7519                                   guint             info,
7520                                   guint             time)
7521 {
7522   GtkTreePath *path;
7523   TreeViewDragInfo *di;
7524   gboolean accepted = FALSE;
7525   GtkTreeModel *model;
7526   GtkTreeView *tree_view;
7527   GtkTreePath *dest_row;
7528   GdkDragAction suggested_action;
7529   gboolean path_down_mode;
7530   gboolean drop_append_mode;
7531
7532   tree_view = GTK_TREE_VIEW (widget);
7533
7534   model = gtk_tree_view_get_model (tree_view);
7535
7536   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7537     return;
7538
7539   di = get_info (tree_view);
7540
7541   if (di == NULL)
7542     return;
7543
7544   suggested_action = get_status_pending (context);
7545
7546   if (suggested_action)
7547     {
7548       /* We are getting this data due to a request in drag_motion,
7549        * rather than due to a request in drag_drop, so we are just
7550        * supposed to call drag_status, not actually paste in the
7551        * data.
7552        */
7553       path = get_logical_dest_row (tree_view, &path_down_mode,
7554                                    &drop_append_mode);
7555
7556       if (path == NULL)
7557         suggested_action = 0;
7558       else if (path_down_mode)
7559         gtk_tree_path_down (path);
7560
7561       if (suggested_action)
7562         {
7563           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7564                                                      path,
7565                                                      selection_data))
7566             {
7567               if (path_down_mode)
7568                 {
7569                   path_down_mode = FALSE;
7570                   gtk_tree_path_up (path);
7571
7572                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7573                                                              path,
7574                                                              selection_data))
7575                     suggested_action = 0;
7576                 }
7577               else
7578                 suggested_action = 0;
7579             }
7580         }
7581
7582       gdk_drag_status (context, suggested_action, time);
7583
7584       if (path)
7585         gtk_tree_path_free (path);
7586
7587       /* If you can't drop, remove user drop indicator until the next motion */
7588       if (suggested_action == 0)
7589         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7590                                          NULL,
7591                                          GTK_TREE_VIEW_DROP_BEFORE);
7592
7593       return;
7594     }
7595
7596   dest_row = get_dest_row (context, &path_down_mode);
7597
7598   if (dest_row == NULL)
7599     return;
7600
7601   if (selection_data->length >= 0)
7602     {
7603       if (path_down_mode)
7604         {
7605           gtk_tree_path_down (dest_row);
7606           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7607                                                      dest_row, selection_data))
7608             gtk_tree_path_up (dest_row);
7609         }
7610     }
7611
7612   if (selection_data->length >= 0)
7613     {
7614       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7615                                                  dest_row,
7616                                                  selection_data))
7617         accepted = TRUE;
7618     }
7619
7620   gtk_drag_finish (context,
7621                    accepted,
7622                    (context->action == GDK_ACTION_MOVE),
7623                    time);
7624
7625   if (gtk_tree_path_get_depth (dest_row) == 1
7626       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7627     {
7628       /* special special case drag to "0", scroll to first item */
7629       if (!tree_view->priv->scroll_to_path)
7630         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7631     }
7632
7633   gtk_tree_path_free (dest_row);
7634
7635   /* drop dest_row */
7636   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7637 }
7638
7639
7640
7641 /* GtkContainer Methods
7642  */
7643
7644
7645 static void
7646 gtk_tree_view_remove (GtkContainer *container,
7647                       GtkWidget    *widget)
7648 {
7649   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7650   GtkTreeViewChild *child = NULL;
7651   GList *tmp_list;
7652
7653   tmp_list = tree_view->priv->children;
7654   while (tmp_list)
7655     {
7656       child = tmp_list->data;
7657       if (child->widget == widget)
7658         {
7659           gtk_widget_unparent (widget);
7660
7661           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7662           g_list_free_1 (tmp_list);
7663           g_slice_free (GtkTreeViewChild, child);
7664           return;
7665         }
7666
7667       tmp_list = tmp_list->next;
7668     }
7669
7670   tmp_list = tree_view->priv->columns;
7671
7672   while (tmp_list)
7673     {
7674       GtkTreeViewColumn *column;
7675       column = tmp_list->data;
7676       if (column->button == widget)
7677         {
7678           gtk_widget_unparent (widget);
7679           return;
7680         }
7681       tmp_list = tmp_list->next;
7682     }
7683 }
7684
7685 static void
7686 gtk_tree_view_forall (GtkContainer *container,
7687                       gboolean      include_internals,
7688                       GtkCallback   callback,
7689                       gpointer      callback_data)
7690 {
7691   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7692   GtkTreeViewChild *child = NULL;
7693   GtkTreeViewColumn *column;
7694   GList *tmp_list;
7695
7696   tmp_list = tree_view->priv->children;
7697   while (tmp_list)
7698     {
7699       child = tmp_list->data;
7700       tmp_list = tmp_list->next;
7701
7702       (* callback) (child->widget, callback_data);
7703     }
7704   if (include_internals == FALSE)
7705     return;
7706
7707   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7708     {
7709       column = tmp_list->data;
7710
7711       if (column->button)
7712         (* callback) (column->button, callback_data);
7713     }
7714 }
7715
7716 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7717  * cells. If so we draw one big row-spanning focus rectangle.
7718  */
7719 static gboolean
7720 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7721 {
7722   GList *list;
7723
7724   for (list = tree_view->priv->columns; list; list = list->next)
7725     {
7726       if (!((GtkTreeViewColumn *)list->data)->visible)
7727         continue;
7728       if (_gtk_tree_view_column_count_special_cells (list->data))
7729         return TRUE;
7730     }
7731
7732   return FALSE;
7733 }
7734
7735 static void
7736 column_sizing_notify (GObject    *object,
7737                       GParamSpec *pspec,
7738                       gpointer    data)
7739 {
7740   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7741
7742   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7743     /* disable fixed height mode */
7744     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7745 }
7746
7747 /**
7748  * gtk_tree_view_set_fixed_height_mode:
7749  * @tree_view: a #GtkTreeView
7750  * @enable: %TRUE to enable fixed height mode
7751  *
7752  * Enables or disables the fixed height mode of @tree_view.
7753  * Fixed height mode speeds up #GtkTreeView by assuming that all
7754  * rows have the same height.
7755  * Only enable this option if all rows are the same height and all
7756  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7757  *
7758  * Since: 2.6
7759  **/
7760 void
7761 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7762                                      gboolean     enable)
7763 {
7764   GList *l;
7765
7766   enable = enable != FALSE;
7767
7768   if (enable == tree_view->priv->fixed_height_mode)
7769     return;
7770
7771   if (!enable)
7772     {
7773       tree_view->priv->fixed_height_mode = 0;
7774       tree_view->priv->fixed_height = -1;
7775
7776       /* force a revalidation */
7777       install_presize_handler (tree_view);
7778     }
7779   else
7780     {
7781       /* make sure all columns are of type FIXED */
7782       for (l = tree_view->priv->columns; l; l = l->next)
7783         {
7784           GtkTreeViewColumn *c = l->data;
7785
7786           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7787         }
7788
7789       /* yes, we really have to do this is in a separate loop */
7790       for (l = tree_view->priv->columns; l; l = l->next)
7791         g_signal_connect (l->data, "notify::sizing",
7792                           G_CALLBACK (column_sizing_notify), tree_view);
7793
7794       tree_view->priv->fixed_height_mode = 1;
7795       tree_view->priv->fixed_height = -1;
7796
7797       if (tree_view->priv->tree)
7798         initialize_fixed_height_mode (tree_view);
7799     }
7800
7801   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7802 }
7803
7804 /**
7805  * gtk_tree_view_get_fixed_height_mode:
7806  * @tree_view: a #GtkTreeView
7807  *
7808  * Returns whether fixed height mode is turned on for @tree_view.
7809  *
7810  * Return value: %TRUE if @tree_view is in fixed height mode
7811  *
7812  * Since: 2.6
7813  **/
7814 gboolean
7815 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7816 {
7817   return tree_view->priv->fixed_height_mode;
7818 }
7819
7820 /* Returns TRUE if the focus is within the headers, after the focus operation is
7821  * done
7822  */
7823 static gboolean
7824 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7825                             GtkDirectionType  dir,
7826                             gboolean          clamp_column_visible)
7827 {
7828   GtkWidget *focus_child;
7829
7830   GList *last_column, *first_column;
7831   GList *tmp_list;
7832   gboolean rtl;
7833
7834   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7835     return FALSE;
7836
7837   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7838
7839   first_column = tree_view->priv->columns;
7840   while (first_column)
7841     {
7842       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7843           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7844           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7845            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7846         break;
7847       first_column = first_column->next;
7848     }
7849
7850   /* No headers are visible, or are focusable.  We can't focus in or out.
7851    */
7852   if (first_column == NULL)
7853     return FALSE;
7854
7855   last_column = g_list_last (tree_view->priv->columns);
7856   while (last_column)
7857     {
7858       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7859           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7860           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7861            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7862         break;
7863       last_column = last_column->prev;
7864     }
7865
7866
7867   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7868
7869   switch (dir)
7870     {
7871     case GTK_DIR_TAB_BACKWARD:
7872     case GTK_DIR_TAB_FORWARD:
7873     case GTK_DIR_UP:
7874     case GTK_DIR_DOWN:
7875       if (focus_child == NULL)
7876         {
7877           if (tree_view->priv->focus_column != NULL &&
7878               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7879             focus_child = tree_view->priv->focus_column->button;
7880           else
7881             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7882           gtk_widget_grab_focus (focus_child);
7883           break;
7884         }
7885       return FALSE;
7886
7887     case GTK_DIR_LEFT:
7888     case GTK_DIR_RIGHT:
7889       if (focus_child == NULL)
7890         {
7891           if (tree_view->priv->focus_column != NULL)
7892             focus_child = tree_view->priv->focus_column->button;
7893           else if (dir == GTK_DIR_LEFT)
7894             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7895           else
7896             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7897           gtk_widget_grab_focus (focus_child);
7898           break;
7899         }
7900
7901       if (gtk_widget_child_focus (focus_child, dir))
7902         {
7903           /* The focus moves inside the button. */
7904           /* This is probably a great example of bad UI */
7905           break;
7906         }
7907
7908       /* We need to move the focus among the row of buttons. */
7909       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7910         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7911           break;
7912
7913       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7914           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7915         {
7916           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7917           break;
7918         }
7919
7920       while (tmp_list)
7921         {
7922           GtkTreeViewColumn *column;
7923
7924           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7925             tmp_list = tmp_list->next;
7926           else
7927             tmp_list = tmp_list->prev;
7928
7929           if (tmp_list == NULL)
7930             {
7931               g_warning ("Internal button not found");
7932               break;
7933             }
7934           column = tmp_list->data;
7935           if (column->button &&
7936               column->visible &&
7937               gtk_widget_get_can_focus (column->button))
7938             {
7939               focus_child = column->button;
7940               gtk_widget_grab_focus (column->button);
7941               break;
7942             }
7943         }
7944       break;
7945     default:
7946       g_assert_not_reached ();
7947       break;
7948     }
7949
7950   /* if focus child is non-null, we assume it's been set to the current focus child
7951    */
7952   if (focus_child)
7953     {
7954       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7955         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7956           {
7957             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7958             break;
7959           }
7960
7961       if (clamp_column_visible)
7962         {
7963           gtk_tree_view_clamp_column_visible (tree_view,
7964                                               tree_view->priv->focus_column,
7965                                               FALSE);
7966         }
7967     }
7968
7969   return (focus_child != NULL);
7970 }
7971
7972 /* This function returns in 'path' the first focusable path, if the given path
7973  * is already focusable, it's the returned one.
7974  */
7975 static gboolean
7976 search_first_focusable_path (GtkTreeView  *tree_view,
7977                              GtkTreePath **path,
7978                              gboolean      search_forward,
7979                              GtkRBTree   **new_tree,
7980                              GtkRBNode   **new_node)
7981 {
7982   GtkRBTree *tree = NULL;
7983   GtkRBNode *node = NULL;
7984
7985   if (!path || !*path)
7986     return FALSE;
7987
7988   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7989
7990   if (!tree || !node)
7991     return FALSE;
7992
7993   while (node && row_is_separator (tree_view, NULL, *path))
7994     {
7995       if (search_forward)
7996         _gtk_rbtree_next_full (tree, node, &tree, &node);
7997       else
7998         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7999
8000       if (*path)
8001         gtk_tree_path_free (*path);
8002
8003       if (node)
8004         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8005       else
8006         *path = NULL;
8007     }
8008
8009   if (new_tree)
8010     *new_tree = tree;
8011
8012   if (new_node)
8013     *new_node = node;
8014
8015   return (*path != NULL);
8016 }
8017
8018 static gint
8019 gtk_tree_view_focus (GtkWidget        *widget,
8020                      GtkDirectionType  direction)
8021 {
8022   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8023   GtkContainer *container = GTK_CONTAINER (widget);
8024   GtkWidget *focus_child;
8025
8026   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8027     return FALSE;
8028
8029   focus_child = gtk_container_get_focus_child (container);
8030
8031   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8032   /* Case 1.  Headers currently have focus. */
8033   if (focus_child)
8034     {
8035       switch (direction)
8036         {
8037         case GTK_DIR_LEFT:
8038         case GTK_DIR_RIGHT:
8039           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8040           return TRUE;
8041         case GTK_DIR_TAB_BACKWARD:
8042         case GTK_DIR_UP:
8043           return FALSE;
8044         case GTK_DIR_TAB_FORWARD:
8045         case GTK_DIR_DOWN:
8046           gtk_widget_grab_focus (widget);
8047           return TRUE;
8048         default:
8049           g_assert_not_reached ();
8050           return FALSE;
8051         }
8052     }
8053
8054   /* Case 2. We don't have focus at all. */
8055   if (!gtk_widget_has_focus (widget))
8056     {
8057       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8058         gtk_widget_grab_focus (widget);
8059       return TRUE;
8060     }
8061
8062   /* Case 3. We have focus already. */
8063   if (direction == GTK_DIR_TAB_BACKWARD)
8064     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8065   else if (direction == GTK_DIR_TAB_FORWARD)
8066     return FALSE;
8067
8068   /* Other directions caught by the keybindings */
8069   gtk_widget_grab_focus (widget);
8070   return TRUE;
8071 }
8072
8073 static void
8074 gtk_tree_view_grab_focus (GtkWidget *widget)
8075 {
8076   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8077
8078   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8079 }
8080
8081 static void
8082 gtk_tree_view_style_set (GtkWidget *widget,
8083                          GtkStyle *previous_style)
8084 {
8085   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8086   GtkStyle *style;
8087   GList *list;
8088   GtkTreeViewColumn *column;
8089
8090   if (gtk_widget_get_realized (widget))
8091     {
8092       gdk_window_set_back_pixmap (gtk_widget_get_window (widget), NULL, FALSE);
8093       style = gtk_widget_get_style (widget);
8094       gdk_window_set_background (tree_view->priv->bin_window,
8095                                  &style->base[gtk_widget_get_state (widget)]);
8096       gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8097
8098       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8099       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8100     }
8101
8102   gtk_widget_style_get (widget,
8103                         "expander-size", &tree_view->priv->expander_size,
8104                         NULL);
8105   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8106
8107   for (list = tree_view->priv->columns; list; list = list->next)
8108     {
8109       column = list->data;
8110       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8111     }
8112
8113   tree_view->priv->fixed_height = -1;
8114   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8115
8116   gtk_widget_queue_resize (widget);
8117 }
8118
8119
8120 static void
8121 gtk_tree_view_set_focus_child (GtkContainer *container,
8122                                GtkWidget    *child)
8123 {
8124   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8125   GList *list;
8126
8127   for (list = tree_view->priv->columns; list; list = list->next)
8128     {
8129       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8130         {
8131           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8132           break;
8133         }
8134     }
8135
8136   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8137 }
8138
8139 static void
8140 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8141                                GtkAdjustment *hadj,
8142                                GtkAdjustment *vadj)
8143 {
8144   gboolean need_adjust = FALSE;
8145
8146   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8147
8148   if (hadj)
8149     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8150   else
8151     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8152   if (vadj)
8153     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8154   else
8155     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8156
8157   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8158     {
8159       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8160                                             gtk_tree_view_adjustment_changed,
8161                                             tree_view);
8162       g_object_unref (tree_view->priv->hadjustment);
8163     }
8164
8165   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8166     {
8167       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8168                                             gtk_tree_view_adjustment_changed,
8169                                             tree_view);
8170       g_object_unref (tree_view->priv->vadjustment);
8171     }
8172
8173   if (tree_view->priv->hadjustment != hadj)
8174     {
8175       tree_view->priv->hadjustment = hadj;
8176       g_object_ref_sink (tree_view->priv->hadjustment);
8177
8178       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8179                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8180                         tree_view);
8181       need_adjust = TRUE;
8182     }
8183
8184   if (tree_view->priv->vadjustment != vadj)
8185     {
8186       tree_view->priv->vadjustment = vadj;
8187       g_object_ref_sink (tree_view->priv->vadjustment);
8188
8189       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8190                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8191                         tree_view);
8192       need_adjust = TRUE;
8193     }
8194
8195   if (need_adjust)
8196     gtk_tree_view_adjustment_changed (NULL, tree_view);
8197 }
8198
8199
8200 static gboolean
8201 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8202                                 GtkMovementStep    step,
8203                                 gint               count)
8204 {
8205   GdkModifierType state;
8206
8207   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8208   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8209                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8210                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8211                         step == GTK_MOVEMENT_PAGES ||
8212                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8213
8214   if (tree_view->priv->tree == NULL)
8215     return FALSE;
8216   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8217     return FALSE;
8218
8219   gtk_tree_view_stop_editing (tree_view, FALSE);
8220   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8221   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8222
8223   if (gtk_get_current_event_state (&state))
8224     {
8225       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8226         tree_view->priv->ctrl_pressed = TRUE;
8227       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8228         tree_view->priv->shift_pressed = TRUE;
8229     }
8230   /* else we assume not pressed */
8231
8232   switch (step)
8233     {
8234       /* currently we make no distinction.  When we go bi-di, we need to */
8235     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8236     case GTK_MOVEMENT_VISUAL_POSITIONS:
8237       gtk_tree_view_move_cursor_left_right (tree_view, count);
8238       break;
8239     case GTK_MOVEMENT_DISPLAY_LINES:
8240       gtk_tree_view_move_cursor_up_down (tree_view, count);
8241       break;
8242     case GTK_MOVEMENT_PAGES:
8243       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8244       break;
8245     case GTK_MOVEMENT_BUFFER_ENDS:
8246       gtk_tree_view_move_cursor_start_end (tree_view, count);
8247       break;
8248     default:
8249       g_assert_not_reached ();
8250     }
8251
8252   tree_view->priv->ctrl_pressed = FALSE;
8253   tree_view->priv->shift_pressed = FALSE;
8254
8255   return TRUE;
8256 }
8257
8258 static void
8259 gtk_tree_view_put (GtkTreeView *tree_view,
8260                    GtkWidget   *child_widget,
8261                    /* in bin_window coordinates */
8262                    gint         x,
8263                    gint         y,
8264                    gint         width,
8265                    gint         height)
8266 {
8267   GtkTreeViewChild *child;
8268
8269   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8270   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8271
8272   child = g_slice_new (GtkTreeViewChild);
8273
8274   child->widget = child_widget;
8275   child->x = x;
8276   child->y = y;
8277   child->width = width;
8278   child->height = height;
8279
8280   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8281
8282   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8283     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8284
8285   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8286 }
8287
8288 void
8289 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8290                                   GtkWidget   *widget,
8291                                   /* in tree coordinates */
8292                                   gint         x,
8293                                   gint         y,
8294                                   gint         width,
8295                                   gint         height)
8296 {
8297   GtkTreeViewChild *child = NULL;
8298   GList *list;
8299   GdkRectangle allocation;
8300
8301   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8302   g_return_if_fail (GTK_IS_WIDGET (widget));
8303
8304   for (list = tree_view->priv->children; list; list = list->next)
8305     {
8306       if (((GtkTreeViewChild *)list->data)->widget == widget)
8307         {
8308           child = list->data;
8309           break;
8310         }
8311     }
8312   if (child == NULL)
8313     return;
8314
8315   allocation.x = child->x = x;
8316   allocation.y = child->y = y;
8317   allocation.width = child->width = width;
8318   allocation.height = child->height = height;
8319
8320   if (gtk_widget_get_realized (widget))
8321     gtk_widget_size_allocate (widget, &allocation);
8322 }
8323
8324
8325 /* TreeModel Callbacks
8326  */
8327
8328 static void
8329 gtk_tree_view_row_changed (GtkTreeModel *model,
8330                            GtkTreePath  *path,
8331                            GtkTreeIter  *iter,
8332                            gpointer      data)
8333 {
8334   GtkTreeView *tree_view = (GtkTreeView *)data;
8335   GtkRBTree *tree;
8336   GtkRBNode *node;
8337   gboolean free_path = FALSE;
8338   GList *list;
8339   GtkTreePath *cursor_path;
8340
8341   g_return_if_fail (path != NULL || iter != NULL);
8342
8343   if (tree_view->priv->cursor != NULL)
8344     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8345   else
8346     cursor_path = NULL;
8347
8348   if (tree_view->priv->edited_column &&
8349       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8350     gtk_tree_view_stop_editing (tree_view, TRUE);
8351
8352   if (cursor_path != NULL)
8353     gtk_tree_path_free (cursor_path);
8354
8355   if (path == NULL)
8356     {
8357       path = gtk_tree_model_get_path (model, iter);
8358       free_path = TRUE;
8359     }
8360   else if (iter == NULL)
8361     gtk_tree_model_get_iter (model, iter, path);
8362
8363   if (_gtk_tree_view_find_node (tree_view,
8364                                 path,
8365                                 &tree,
8366                                 &node))
8367     /* We aren't actually showing the node */
8368     goto done;
8369
8370   if (tree == NULL)
8371     goto done;
8372
8373   if (tree_view->priv->fixed_height_mode
8374       && tree_view->priv->fixed_height >= 0)
8375     {
8376       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8377       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8378         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8379     }
8380   else
8381     {
8382       _gtk_rbtree_node_mark_invalid (tree, node);
8383       for (list = tree_view->priv->columns; list; list = list->next)
8384         {
8385           GtkTreeViewColumn *column;
8386
8387           column = list->data;
8388           if (! column->visible)
8389             continue;
8390
8391           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8392             {
8393               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8394             }
8395         }
8396     }
8397
8398  done:
8399   if (!tree_view->priv->fixed_height_mode &&
8400       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8401     install_presize_handler (tree_view);
8402   if (free_path)
8403     gtk_tree_path_free (path);
8404 }
8405
8406 static void
8407 gtk_tree_view_row_inserted (GtkTreeModel *model,
8408                             GtkTreePath  *path,
8409                             GtkTreeIter  *iter,
8410                             gpointer      data)
8411 {
8412   GtkTreeView *tree_view = (GtkTreeView *) data;
8413   gint *indices;
8414   GtkRBTree *tmptree, *tree;
8415   GtkRBNode *tmpnode = NULL;
8416   gint depth;
8417   gint i = 0;
8418   gint height;
8419   gboolean free_path = FALSE;
8420   gboolean node_visible = TRUE;
8421
8422   g_return_if_fail (path != NULL || iter != NULL);
8423
8424   if (tree_view->priv->fixed_height_mode
8425       && tree_view->priv->fixed_height >= 0)
8426     height = tree_view->priv->fixed_height;
8427   else
8428     height = 0;
8429
8430   if (path == NULL)
8431     {
8432       path = gtk_tree_model_get_path (model, iter);
8433       free_path = TRUE;
8434     }
8435   else if (iter == NULL)
8436     gtk_tree_model_get_iter (model, iter, path);
8437
8438   if (tree_view->priv->tree == NULL)
8439     tree_view->priv->tree = _gtk_rbtree_new ();
8440
8441   tmptree = tree = tree_view->priv->tree;
8442
8443   /* Update all row-references */
8444   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8445   depth = gtk_tree_path_get_depth (path);
8446   indices = gtk_tree_path_get_indices (path);
8447
8448   /* First, find the parent tree */
8449   while (i < depth - 1)
8450     {
8451       if (tmptree == NULL)
8452         {
8453           /* We aren't showing the node */
8454           node_visible = FALSE;
8455           goto done;
8456         }
8457
8458       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8459       if (tmpnode == NULL)
8460         {
8461           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8462                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8463                      "before the parent was inserted.");
8464           goto done;
8465         }
8466       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8467         {
8468           /* FIXME enforce correct behavior on model, probably */
8469           /* In theory, the model should have emitted has_child_toggled here.  We
8470            * try to catch it anyway, just to be safe, in case the model hasn't.
8471            */
8472           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8473                                                            tree,
8474                                                            tmpnode);
8475           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8476           gtk_tree_path_free (tmppath);
8477           goto done;
8478         }
8479
8480       tmptree = tmpnode->children;
8481       tree = tmptree;
8482       i++;
8483     }
8484
8485   if (tree == NULL)
8486     {
8487       node_visible = FALSE;
8488       goto done;
8489     }
8490
8491   /* ref the node */
8492   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8493   if (indices[depth - 1] == 0)
8494     {
8495       tmpnode = _gtk_rbtree_find_count (tree, 1);
8496       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8497     }
8498   else
8499     {
8500       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8501       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8502     }
8503
8504  done:
8505   if (height > 0)
8506     {
8507       if (tree)
8508         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8509
8510       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8511         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8512       else
8513         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8514     }
8515   else
8516     install_presize_handler (tree_view);
8517   if (free_path)
8518     gtk_tree_path_free (path);
8519 }
8520
8521 static void
8522 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8523                                      GtkTreePath  *path,
8524                                      GtkTreeIter  *iter,
8525                                      gpointer      data)
8526 {
8527   GtkTreeView *tree_view = (GtkTreeView *)data;
8528   GtkTreeIter real_iter;
8529   gboolean has_child;
8530   GtkRBTree *tree;
8531   GtkRBNode *node;
8532   gboolean free_path = FALSE;
8533
8534   g_return_if_fail (path != NULL || iter != NULL);
8535
8536   if (iter)
8537     real_iter = *iter;
8538
8539   if (path == NULL)
8540     {
8541       path = gtk_tree_model_get_path (model, iter);
8542       free_path = TRUE;
8543     }
8544   else if (iter == NULL)
8545     gtk_tree_model_get_iter (model, &real_iter, path);
8546
8547   if (_gtk_tree_view_find_node (tree_view,
8548                                 path,
8549                                 &tree,
8550                                 &node))
8551     /* We aren't actually showing the node */
8552     goto done;
8553
8554   if (tree == NULL)
8555     goto done;
8556
8557   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8558   /* Sanity check.
8559    */
8560   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8561     goto done;
8562
8563   if (has_child)
8564     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8565   else
8566     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8567
8568   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8569     {
8570       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8571       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8572         {
8573           GList *list;
8574
8575           for (list = tree_view->priv->columns; list; list = list->next)
8576             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8577               {
8578                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8579                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8580                 break;
8581               }
8582         }
8583       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8584     }
8585   else
8586     {
8587       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8588     }
8589
8590  done:
8591   if (free_path)
8592     gtk_tree_path_free (path);
8593 }
8594
8595 static void
8596 count_children_helper (GtkRBTree *tree,
8597                        GtkRBNode *node,
8598                        gpointer   data)
8599 {
8600   if (node->children)
8601     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8602   (*((gint *)data))++;
8603 }
8604
8605 static void
8606 check_selection_helper (GtkRBTree *tree,
8607                         GtkRBNode *node,
8608                         gpointer   data)
8609 {
8610   gint *value = (gint *)data;
8611
8612   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8613
8614   if (node->children && !*value)
8615     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8616 }
8617
8618 static void
8619 gtk_tree_view_row_deleted (GtkTreeModel *model,
8620                            GtkTreePath  *path,
8621                            gpointer      data)
8622 {
8623   GtkTreeView *tree_view = (GtkTreeView *)data;
8624   GtkRBTree *tree;
8625   GtkRBNode *node;
8626   GList *list;
8627   gint selection_changed = FALSE;
8628
8629   g_return_if_fail (path != NULL);
8630
8631   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8632
8633   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8634     return;
8635
8636   if (tree == NULL)
8637     return;
8638
8639   /* check if the selection has been changed */
8640   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8641                         check_selection_helper, &selection_changed);
8642
8643   for (list = tree_view->priv->columns; list; list = list->next)
8644     if (((GtkTreeViewColumn *)list->data)->visible &&
8645         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8646       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8647
8648   /* Ensure we don't have a dangling pointer to a dead node */
8649   ensure_unprelighted (tree_view);
8650
8651   /* Cancel editting if we've started */
8652   gtk_tree_view_stop_editing (tree_view, TRUE);
8653
8654   /* If we have a node expanded/collapsed timeout, remove it */
8655   remove_expand_collapse_timeout (tree_view);
8656
8657   if (tree_view->priv->destroy_count_func)
8658     {
8659       gint child_count = 0;
8660       if (node->children)
8661         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8662       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8663     }
8664
8665   if (tree->root->count == 1)
8666     {
8667       if (tree_view->priv->tree == tree)
8668         tree_view->priv->tree = NULL;
8669
8670       _gtk_rbtree_remove (tree);
8671     }
8672   else
8673     {
8674       _gtk_rbtree_remove_node (tree, node);
8675     }
8676
8677   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8678     {
8679       gtk_tree_row_reference_free (tree_view->priv->top_row);
8680       tree_view->priv->top_row = NULL;
8681     }
8682
8683   install_scroll_sync_handler (tree_view);
8684
8685   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8686
8687   if (selection_changed)
8688     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8689 }
8690
8691 static void
8692 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8693                               GtkTreePath  *parent,
8694                               GtkTreeIter  *iter,
8695                               gint         *new_order,
8696                               gpointer      data)
8697 {
8698   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8699   GtkRBTree *tree;
8700   GtkRBNode *node;
8701   gint len;
8702
8703   len = gtk_tree_model_iter_n_children (model, iter);
8704
8705   if (len < 2)
8706     return;
8707
8708   gtk_tree_row_reference_reordered (G_OBJECT (data),
8709                                     parent,
8710                                     iter,
8711                                     new_order);
8712
8713   if (_gtk_tree_view_find_node (tree_view,
8714                                 parent,
8715                                 &tree,
8716                                 &node))
8717     return;
8718
8719   /* We need to special case the parent path */
8720   if (tree == NULL)
8721     tree = tree_view->priv->tree;
8722   else
8723     tree = node->children;
8724
8725   if (tree == NULL)
8726     return;
8727
8728   if (tree_view->priv->edited_column)
8729     gtk_tree_view_stop_editing (tree_view, TRUE);
8730
8731   /* we need to be unprelighted */
8732   ensure_unprelighted (tree_view);
8733
8734   /* clear the timeout */
8735   cancel_arrow_animation (tree_view);
8736
8737   _gtk_rbtree_reorder (tree, new_order, len);
8738
8739   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8740
8741   gtk_tree_view_dy_to_top_row (tree_view);
8742 }
8743
8744
8745 /* Internal tree functions
8746  */
8747
8748
8749 static void
8750 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8751                                      GtkRBTree         *tree,
8752                                      GtkTreeViewColumn *column,
8753                                      gint              *x1,
8754                                      gint              *x2)
8755 {
8756   GtkTreeViewColumn *tmp_column = NULL;
8757   gint total_width;
8758   GList *list;
8759   gboolean rtl;
8760
8761   if (x1)
8762     *x1 = 0;
8763
8764   if (x2)
8765     *x2 = 0;
8766
8767   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8768
8769   total_width = 0;
8770   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8771        list;
8772        list = (rtl ? list->prev : list->next))
8773     {
8774       tmp_column = list->data;
8775
8776       if (tmp_column == column)
8777         break;
8778
8779       if (tmp_column->visible)
8780         total_width += tmp_column->width;
8781     }
8782
8783   if (tmp_column != column)
8784     {
8785       g_warning (G_STRLOC": passed-in column isn't in the tree");
8786       return;
8787     }
8788
8789   if (x1)
8790     *x1 = total_width;
8791
8792   if (x2)
8793     {
8794       if (column->visible)
8795         *x2 = total_width + column->width;
8796       else
8797         *x2 = total_width; /* width of 0 */
8798     }
8799 }
8800 static void
8801 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8802                                 GtkRBTree   *tree,
8803                                 gint        *x1,
8804                                 gint        *x2)
8805 {
8806   gint x_offset = 0;
8807   GList *list;
8808   GtkTreeViewColumn *tmp_column = NULL;
8809   gint total_width;
8810   gboolean indent_expanders;
8811   gboolean rtl;
8812
8813   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8814
8815   total_width = 0;
8816   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8817        list;
8818        list = (rtl ? list->prev : list->next))
8819     {
8820       tmp_column = list->data;
8821
8822       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8823         {
8824           if (rtl)
8825             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8826           else
8827             x_offset = total_width;
8828           break;
8829         }
8830
8831       if (tmp_column->visible)
8832         total_width += tmp_column->width;
8833     }
8834
8835   gtk_widget_style_get (GTK_WIDGET (tree_view),
8836                         "indent-expanders", &indent_expanders,
8837                         NULL);
8838
8839   if (indent_expanders)
8840     {
8841       if (rtl)
8842         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8843       else
8844         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8845     }
8846
8847   *x1 = x_offset;
8848
8849   if (tmp_column && tmp_column->visible)
8850     /* +1 because x2 isn't included in the range. */
8851     *x2 = *x1 + tree_view->priv->expander_size + 1;
8852   else
8853     *x2 = *x1;
8854 }
8855
8856 static void
8857 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8858                           GtkRBTree   *tree,
8859                           GtkTreeIter *iter,
8860                           gint         depth,
8861                           gboolean     recurse)
8862 {
8863   GtkRBNode *temp = NULL;
8864   GtkTreePath *path = NULL;
8865   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8866
8867   do
8868     {
8869       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8870       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8871
8872       if (tree_view->priv->fixed_height > 0)
8873         {
8874           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8875             {
8876               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8877               _gtk_rbtree_node_mark_valid (tree, temp);
8878             }
8879         }
8880
8881       if (is_list)
8882         continue;
8883
8884       if (recurse)
8885         {
8886           GtkTreeIter child;
8887
8888           if (!path)
8889             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8890           else
8891             gtk_tree_path_next (path);
8892
8893           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8894             {
8895               gboolean expand;
8896
8897               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8898
8899               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8900                   && !expand)
8901                 {
8902                   temp->children = _gtk_rbtree_new ();
8903                   temp->children->parent_tree = tree;
8904                   temp->children->parent_node = temp;
8905                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8906                 }
8907             }
8908         }
8909
8910       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8911         {
8912           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8913             temp->flags ^= GTK_RBNODE_IS_PARENT;
8914         }
8915     }
8916   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8917
8918   if (path)
8919     gtk_tree_path_free (path);
8920 }
8921
8922 /* Make sure the node is visible vertically */
8923 static void
8924 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8925                                   GtkRBTree   *tree,
8926                                   GtkRBNode   *node)
8927 {
8928   gint node_dy, height;
8929   GtkTreePath *path = NULL;
8930
8931   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8932     return;
8933
8934   /* just return if the node is visible, avoiding a costly expose */
8935   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8936   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8937   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8938       && node_dy >= tree_view->priv->vadjustment->value
8939       && node_dy + height <= (tree_view->priv->vadjustment->value
8940                               + tree_view->priv->vadjustment->page_size))
8941     return;
8942
8943   path = _gtk_tree_view_find_path (tree_view, tree, node);
8944   if (path)
8945     {
8946       /* We process updates because we want to clear old selected items when we scroll.
8947        * if this is removed, we get a "selection streak" at the bottom. */
8948       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8949       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8950       gtk_tree_path_free (path);
8951     }
8952 }
8953
8954 static void
8955 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8956                                     GtkTreeViewColumn *column,
8957                                     gboolean           focus_to_cell)
8958 {
8959   GtkAllocation allocation;
8960   gint x, width;
8961
8962   if (column == NULL)
8963     return;
8964
8965   gtk_widget_get_allocation (column->button, &allocation);
8966   x = allocation.x;
8967   width = allocation.width;
8968
8969   if (width > tree_view->priv->hadjustment->page_size)
8970     {
8971       /* The column is larger than the horizontal page size.  If the
8972        * column has cells which can be focussed individually, then we make
8973        * sure the cell which gets focus is fully visible (if even the
8974        * focus cell is bigger than the page size, we make sure the
8975        * left-hand side of the cell is visible).
8976        *
8977        * If the column does not have those so-called special cells, we
8978        * make sure the left-hand side of the column is visible.
8979        */
8980
8981       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8982         {
8983           GtkTreePath *cursor_path;
8984           GdkRectangle background_area, cell_area, focus_area;
8985
8986           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8987
8988           gtk_tree_view_get_cell_area (tree_view,
8989                                        cursor_path, column, &cell_area);
8990           gtk_tree_view_get_background_area (tree_view,
8991                                              cursor_path, column,
8992                                              &background_area);
8993
8994           gtk_tree_path_free (cursor_path);
8995
8996           _gtk_tree_view_column_get_focus_area (column,
8997                                                 &background_area,
8998                                                 &cell_area,
8999                                                 &focus_area);
9000
9001           x = focus_area.x;
9002           width = focus_area.width;
9003
9004           if (width < tree_view->priv->hadjustment->page_size)
9005             {
9006               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
9007                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
9008                                           x + width - tree_view->priv->hadjustment->page_size);
9009               else if (tree_view->priv->hadjustment->value > x)
9010                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9011             }
9012         }
9013
9014       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9015     }
9016   else
9017     {
9018       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
9019           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9020                                     x + width - tree_view->priv->hadjustment->page_size);
9021       else if (tree_view->priv->hadjustment->value > x)
9022         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9023   }
9024 }
9025
9026 /* This function could be more efficient.  I'll optimize it if profiling seems
9027  * to imply that it is important */
9028 GtkTreePath *
9029 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9030                           GtkRBTree   *tree,
9031                           GtkRBNode   *node)
9032 {
9033   GtkTreePath *path;
9034   GtkRBTree *tmp_tree;
9035   GtkRBNode *tmp_node, *last;
9036   gint count;
9037
9038   path = gtk_tree_path_new ();
9039
9040   g_return_val_if_fail (node != NULL, path);
9041   g_return_val_if_fail (node != tree->nil, path);
9042
9043   count = 1 + node->left->count;
9044
9045   last = node;
9046   tmp_node = node->parent;
9047   tmp_tree = tree;
9048   while (tmp_tree)
9049     {
9050       while (tmp_node != tmp_tree->nil)
9051         {
9052           if (tmp_node->right == last)
9053             count += 1 + tmp_node->left->count;
9054           last = tmp_node;
9055           tmp_node = tmp_node->parent;
9056         }
9057       gtk_tree_path_prepend_index (path, count - 1);
9058       last = tmp_tree->parent_node;
9059       tmp_tree = tmp_tree->parent_tree;
9060       if (last)
9061         {
9062           count = 1 + last->left->count;
9063           tmp_node = last->parent;
9064         }
9065     }
9066   return path;
9067 }
9068
9069 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9070  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9071  * both set to NULL.
9072  */
9073 gboolean
9074 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9075                           GtkTreePath  *path,
9076                           GtkRBTree   **tree,
9077                           GtkRBNode   **node)
9078 {
9079   GtkRBNode *tmpnode = NULL;
9080   GtkRBTree *tmptree = tree_view->priv->tree;
9081   gint *indices = gtk_tree_path_get_indices (path);
9082   gint depth = gtk_tree_path_get_depth (path);
9083   gint i = 0;
9084
9085   *node = NULL;
9086   *tree = NULL;
9087
9088   if (depth == 0 || tmptree == NULL)
9089     return FALSE;
9090   do
9091     {
9092       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9093       ++i;
9094       if (tmpnode == NULL)
9095         {
9096           *tree = NULL;
9097           *node = NULL;
9098           return FALSE;
9099         }
9100       if (i >= depth)
9101         {
9102           *tree = tmptree;
9103           *node = tmpnode;
9104           return FALSE;
9105         }
9106       *tree = tmptree;
9107       *node = tmpnode;
9108       tmptree = tmpnode->children;
9109       if (tmptree == NULL)
9110         return TRUE;
9111     }
9112   while (1);
9113 }
9114
9115 static gboolean
9116 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9117                                   GtkTreeViewColumn *column)
9118 {
9119   GList *list;
9120
9121   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9122     return FALSE;
9123
9124   if (tree_view->priv->expander_column != NULL)
9125     {
9126       if (tree_view->priv->expander_column == column)
9127         return TRUE;
9128       return FALSE;
9129     }
9130   else
9131     {
9132       for (list = tree_view->priv->columns;
9133            list;
9134            list = list->next)
9135         if (((GtkTreeViewColumn *)list->data)->visible)
9136           break;
9137       if (list && list->data == column)
9138         return TRUE;
9139     }
9140   return FALSE;
9141 }
9142
9143 static void
9144 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9145                                 guint           keyval,
9146                                 guint           modmask,
9147                                 gboolean        add_shifted_binding,
9148                                 GtkMovementStep step,
9149                                 gint            count)
9150 {
9151
9152   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9153                                 "move-cursor", 2,
9154                                 G_TYPE_ENUM, step,
9155                                 G_TYPE_INT, count);
9156
9157   if (add_shifted_binding)
9158     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9159                                   "move-cursor", 2,
9160                                   G_TYPE_ENUM, step,
9161                                   G_TYPE_INT, count);
9162
9163   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9164    return;
9165
9166   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9167                                 "move-cursor", 2,
9168                                 G_TYPE_ENUM, step,
9169                                 G_TYPE_INT, count);
9170
9171   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9172                                 "move-cursor", 2,
9173                                 G_TYPE_ENUM, step,
9174                                 G_TYPE_INT, count);
9175 }
9176
9177 static gint
9178 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9179                                  GtkTreeIter  *iter,
9180                                  GtkRBTree    *tree,
9181                                  GtkRBNode    *node)
9182 {
9183   gint retval = FALSE;
9184   do
9185     {
9186       g_return_val_if_fail (node != NULL, FALSE);
9187
9188       if (node->children)
9189         {
9190           GtkTreeIter child;
9191           GtkRBTree *new_tree;
9192           GtkRBNode *new_node;
9193
9194           new_tree = node->children;
9195           new_node = new_tree->root;
9196
9197           while (new_node && new_node->left != new_tree->nil)
9198             new_node = new_node->left;
9199
9200           if (!gtk_tree_model_iter_children (model, &child, iter))
9201             return FALSE;
9202
9203           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9204         }
9205
9206       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9207         retval = TRUE;
9208       gtk_tree_model_unref_node (model, iter);
9209       node = _gtk_rbtree_next (tree, node);
9210     }
9211   while (gtk_tree_model_iter_next (model, iter));
9212
9213   return retval;
9214 }
9215
9216 static gint
9217 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9218                                               GtkRBTree   *tree)
9219 {
9220   GtkTreeIter iter;
9221   GtkTreePath *path;
9222   GtkRBNode *node;
9223   gint retval;
9224
9225   if (!tree)
9226     return FALSE;
9227
9228   node = tree->root;
9229   while (node && node->left != tree->nil)
9230     node = node->left;
9231
9232   g_return_val_if_fail (node != NULL, FALSE);
9233   path = _gtk_tree_view_find_path (tree_view, tree, node);
9234   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9235                            &iter, path);
9236   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9237   gtk_tree_path_free (path);
9238
9239   return retval;
9240 }
9241
9242 static void
9243 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9244                                     GtkTreeViewColumn *column)
9245 {
9246   GtkTreeViewColumn *left_column;
9247   GtkTreeViewColumn *cur_column = NULL;
9248   GtkTreeViewColumnReorder *reorder;
9249   gboolean rtl;
9250   GList *tmp_list;
9251   gint left;
9252
9253   /* We want to precalculate the motion list such that we know what column slots
9254    * are available.
9255    */
9256   left_column = NULL;
9257   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9258
9259   /* First, identify all possible drop spots */
9260   if (rtl)
9261     tmp_list = g_list_last (tree_view->priv->columns);
9262   else
9263     tmp_list = g_list_first (tree_view->priv->columns);
9264
9265   while (tmp_list)
9266     {
9267       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9268       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9269
9270       if (cur_column->visible == FALSE)
9271         continue;
9272
9273       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9274       if (left_column != column && cur_column != column &&
9275           tree_view->priv->column_drop_func &&
9276           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9277         {
9278           left_column = cur_column;
9279           continue;
9280         }
9281       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9282       reorder->left_column = left_column;
9283       left_column = reorder->right_column = cur_column;
9284
9285       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9286     }
9287
9288   /* Add the last one */
9289   if (tree_view->priv->column_drop_func == NULL ||
9290       ((left_column != column) &&
9291        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9292     {
9293       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9294       reorder->left_column = left_column;
9295       reorder->right_column = NULL;
9296       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9297     }
9298
9299   /* We quickly check to see if it even makes sense to reorder columns. */
9300   /* If there is nothing that can be moved, then we return */
9301
9302   if (tree_view->priv->column_drag_info == NULL)
9303     return;
9304
9305   /* We know there are always 2 slots possbile, as you can always return column. */
9306   /* If that's all there is, return */
9307   if (tree_view->priv->column_drag_info->next == NULL ||
9308       (tree_view->priv->column_drag_info->next->next == NULL &&
9309        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9310        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9311     {
9312       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9313         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9314       g_list_free (tree_view->priv->column_drag_info);
9315       tree_view->priv->column_drag_info = NULL;
9316       return;
9317     }
9318   /* We fill in the ranges for the columns, now that we've isolated them */
9319   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9320
9321   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9322     {
9323       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9324
9325       reorder->left_align = left;
9326       if (tmp_list->next != NULL)
9327         {
9328           GtkAllocation right_allocation, left_allocation;
9329
9330           g_assert (tmp_list->next->data);
9331
9332           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
9333           gtk_widget_get_allocation (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button, &left_allocation);
9334           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9335         }
9336       else
9337         {
9338           gint width;
9339
9340           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9341           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9342         }
9343     }
9344 }
9345
9346 void
9347 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9348                                   GtkTreeViewColumn *column,
9349                                   GdkDevice         *device)
9350 {
9351   GdkEvent *send_event;
9352   GtkAllocation allocation;
9353   GtkAllocation button_allocation;
9354   gint x, y, width, height;
9355   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9356   GdkDisplay *display = gdk_screen_get_display (screen);
9357
9358   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9359   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9360
9361   gtk_tree_view_set_column_drag_info (tree_view, column);
9362
9363   if (tree_view->priv->column_drag_info == NULL)
9364     return;
9365
9366   if (tree_view->priv->drag_window == NULL)
9367     {
9368       GdkWindowAttr attributes;
9369       guint attributes_mask;
9370
9371       gtk_widget_get_allocation (column->button, &button_allocation);
9372
9373       attributes.window_type = GDK_WINDOW_CHILD;
9374       attributes.wclass = GDK_INPUT_OUTPUT;
9375       attributes.x = button_allocation.x;
9376       attributes.y = 0;
9377       attributes.width = button_allocation.width;
9378       attributes.height = button_allocation.height;
9379       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9380       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9381       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9382       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9383
9384       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9385                                                      &attributes,
9386                                                      attributes_mask);
9387       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9388     }
9389
9390   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9391   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9392
9393   gtk_grab_remove (column->button);
9394
9395   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9396   send_event->crossing.send_event = TRUE;
9397   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9398   send_event->crossing.subwindow = NULL;
9399   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9400   send_event->crossing.time = GDK_CURRENT_TIME;
9401   gdk_event_set_device (send_event, device);
9402
9403   gtk_propagate_event (column->button, send_event);
9404   gdk_event_free (send_event);
9405
9406   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9407   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9408   send_event->button.send_event = TRUE;
9409   send_event->button.time = GDK_CURRENT_TIME;
9410   send_event->button.x = -1;
9411   send_event->button.y = -1;
9412   send_event->button.axes = NULL;
9413   send_event->button.state = 0;
9414   send_event->button.button = 1;
9415   send_event->button.x_root = 0;
9416   send_event->button.y_root = 0;
9417   gdk_event_set_device (send_event, device);
9418
9419   gtk_propagate_event (column->button, send_event);
9420   gdk_event_free (send_event);
9421
9422   /* Kids, don't try this at home */
9423   g_object_ref (column->button);
9424   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9425   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9426   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9427   g_object_unref (column->button);
9428
9429   gtk_widget_get_allocation (column->button, &button_allocation);
9430   tree_view->priv->drag_column_x = button_allocation.x;
9431   allocation = button_allocation;
9432   allocation.x = 0;
9433   gtk_widget_size_allocate (column->button, &allocation);
9434   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9435
9436   tree_view->priv->drag_column = column;
9437   gdk_window_show (tree_view->priv->drag_window);
9438
9439   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9440   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9441
9442   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9443   while (gtk_events_pending ())
9444     gtk_main_iteration ();
9445
9446   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9447   gdk_pointer_grab (tree_view->priv->drag_window,
9448                     FALSE,
9449                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9450                     NULL, NULL, GDK_CURRENT_TIME);
9451   gdk_keyboard_grab (tree_view->priv->drag_window,
9452                      FALSE,
9453                      GDK_CURRENT_TIME);
9454 }
9455
9456 static void
9457 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9458                                 GtkRBTree          *tree,
9459                                 GtkRBNode          *node,
9460                                 const GdkRectangle *clip_rect)
9461 {
9462   GtkAllocation allocation;
9463   GdkRectangle rect;
9464
9465   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9466     return;
9467
9468   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9469   rect.x = 0;
9470   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9471
9472   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9473   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9474
9475   if (clip_rect)
9476     {
9477       GdkRectangle new_rect;
9478
9479       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9480
9481       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9482     }
9483   else
9484     {
9485       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9486     }
9487 }
9488
9489 void
9490 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9491                                 GtkRBTree          *tree,
9492                                 GtkRBNode          *node,
9493                                 const GdkRectangle *clip_rect)
9494 {
9495   GtkAllocation allocation;
9496   GdkRectangle rect;
9497
9498   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9499     return;
9500
9501   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9502   rect.x = 0;
9503   rect.width = MAX (tree_view->priv->width, allocation.width);
9504
9505   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9506   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9507
9508   if (clip_rect)
9509     {
9510       GdkRectangle new_rect;
9511
9512       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9513
9514       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9515     }
9516   else
9517     {
9518       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9519     }
9520 }
9521
9522 static void
9523 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9524                                GtkTreePath        *path,
9525                                const GdkRectangle *clip_rect)
9526 {
9527   GtkRBTree *tree = NULL;
9528   GtkRBNode *node = NULL;
9529
9530   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9531
9532   if (tree)
9533     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9534 }
9535
9536 /* x and y are the mouse position
9537  */
9538 static void
9539 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9540                           GtkRBTree   *tree,
9541                           GtkRBNode   *node,
9542                           /* in bin_window coordinates */
9543                           gint         x,
9544                           gint         y)
9545 {
9546   GdkRectangle area;
9547   GtkStateType state;
9548   GtkWidget *widget;
9549   gint x_offset = 0;
9550   gint x2;
9551   gint vertical_separator;
9552   gint expander_size;
9553   GtkExpanderStyle expander_style;
9554
9555   widget = GTK_WIDGET (tree_view);
9556
9557   gtk_widget_style_get (widget,
9558                         "vertical-separator", &vertical_separator,
9559                         NULL);
9560   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9561
9562   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9563     return;
9564
9565   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9566
9567   area.x = x_offset;
9568   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9569   area.width = expander_size + 2;
9570   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9571
9572   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9573     {
9574       state = GTK_STATE_INSENSITIVE;
9575     }
9576   else if (node == tree_view->priv->button_pressed_node)
9577     {
9578       if (x >= area.x && x <= (area.x + area.width) &&
9579           y >= area.y && y <= (area.y + area.height))
9580         state = GTK_STATE_ACTIVE;
9581       else
9582         state = GTK_STATE_NORMAL;
9583     }
9584   else
9585     {
9586       if (node == tree_view->priv->prelight_node &&
9587           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9588         state = GTK_STATE_PRELIGHT;
9589       else
9590         state = GTK_STATE_NORMAL;
9591     }
9592
9593   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9594     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9595   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9596     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9597   else if (node->children != NULL)
9598     expander_style = GTK_EXPANDER_EXPANDED;
9599   else
9600     expander_style = GTK_EXPANDER_COLLAPSED;
9601
9602   gtk_paint_expander (gtk_widget_get_style (widget),
9603                       tree_view->priv->bin_window,
9604                       state,
9605                       &area,
9606                       widget,
9607                       "treeview",
9608                       area.x + area.width / 2,
9609                       area.y + area.height / 2,
9610                       expander_style);
9611 }
9612
9613 static void
9614 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9615
9616 {
9617   GtkTreePath *cursor_path;
9618
9619   if ((tree_view->priv->tree == NULL) ||
9620       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9621     return;
9622
9623   cursor_path = NULL;
9624   if (tree_view->priv->cursor)
9625     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9626
9627   if (cursor_path == NULL)
9628     {
9629       /* Consult the selection before defaulting to the
9630        * first focusable element
9631        */
9632       GList *selected_rows;
9633       GtkTreeModel *model;
9634       GtkTreeSelection *selection;
9635
9636       selection = gtk_tree_view_get_selection (tree_view);
9637       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9638
9639       if (selected_rows)
9640         {
9641           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9642           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9643           g_list_free (selected_rows);
9644         }
9645       else
9646         {
9647           cursor_path = gtk_tree_path_new_first ();
9648           search_first_focusable_path (tree_view, &cursor_path,
9649                                        TRUE, NULL, NULL);
9650         }
9651
9652       gtk_tree_row_reference_free (tree_view->priv->cursor);
9653       tree_view->priv->cursor = NULL;
9654
9655       if (cursor_path)
9656         {
9657           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9658             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9659           else
9660             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9661         }
9662     }
9663
9664   if (cursor_path)
9665     {
9666       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9667
9668       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9669       gtk_tree_path_free (cursor_path);
9670
9671       if (tree_view->priv->focus_column == NULL)
9672         {
9673           GList *list;
9674           for (list = tree_view->priv->columns; list; list = list->next)
9675             {
9676               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9677                 {
9678                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9679                   break;
9680                 }
9681             }
9682         }
9683     }
9684 }
9685
9686 static void
9687 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9688                                    gint         count)
9689 {
9690   gint selection_count;
9691   GtkRBTree *cursor_tree = NULL;
9692   GtkRBNode *cursor_node = NULL;
9693   GtkRBTree *new_cursor_tree = NULL;
9694   GtkRBNode *new_cursor_node = NULL;
9695   GtkTreePath *cursor_path = NULL;
9696   gboolean grab_focus = TRUE;
9697   gboolean selectable;
9698
9699   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9700     return;
9701
9702   cursor_path = NULL;
9703   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9704     /* FIXME: we lost the cursor; should we get the first? */
9705     return;
9706
9707   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9708   _gtk_tree_view_find_node (tree_view, cursor_path,
9709                             &cursor_tree, &cursor_node);
9710
9711   if (cursor_tree == NULL)
9712     /* FIXME: we lost the cursor; should we get the first? */
9713     return;
9714
9715   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9716   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9717                                                       cursor_node,
9718                                                       cursor_path);
9719
9720   if (selection_count == 0
9721       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9722       && !tree_view->priv->ctrl_pressed
9723       && selectable)
9724     {
9725       /* Don't move the cursor, but just select the current node */
9726       new_cursor_tree = cursor_tree;
9727       new_cursor_node = cursor_node;
9728     }
9729   else
9730     {
9731       if (count == -1)
9732         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9733                                &new_cursor_tree, &new_cursor_node);
9734       else
9735         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9736                                &new_cursor_tree, &new_cursor_node);
9737     }
9738
9739   gtk_tree_path_free (cursor_path);
9740
9741   if (new_cursor_node)
9742     {
9743       cursor_path = _gtk_tree_view_find_path (tree_view,
9744                                               new_cursor_tree, new_cursor_node);
9745
9746       search_first_focusable_path (tree_view, &cursor_path,
9747                                    (count != -1),
9748                                    &new_cursor_tree,
9749                                    &new_cursor_node);
9750
9751       if (cursor_path)
9752         gtk_tree_path_free (cursor_path);
9753     }
9754
9755   /*
9756    * If the list has only one item and multi-selection is set then select
9757    * the row (if not yet selected).
9758    */
9759   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9760       new_cursor_node == NULL)
9761     {
9762       if (count == -1)
9763         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9764                                &new_cursor_tree, &new_cursor_node);
9765       else
9766         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9767                                &new_cursor_tree, &new_cursor_node);
9768
9769       if (new_cursor_node == NULL
9770           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9771         {
9772           new_cursor_node = cursor_node;
9773           new_cursor_tree = cursor_tree;
9774         }
9775       else
9776         {
9777           new_cursor_node = NULL;
9778         }
9779     }
9780
9781   if (new_cursor_node)
9782     {
9783       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9784       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9785       gtk_tree_path_free (cursor_path);
9786     }
9787   else
9788     {
9789       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9790
9791       if (!tree_view->priv->shift_pressed)
9792         {
9793           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9794                                           count < 0 ?
9795                                           GTK_DIR_UP : GTK_DIR_DOWN))
9796             {
9797               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9798
9799               if (toplevel)
9800                 gtk_widget_child_focus (toplevel,
9801                                         count < 0 ?
9802                                         GTK_DIR_TAB_BACKWARD :
9803                                         GTK_DIR_TAB_FORWARD);
9804
9805               grab_focus = FALSE;
9806             }
9807         }
9808       else
9809         {
9810           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9811         }
9812     }
9813
9814   if (grab_focus)
9815     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9816 }
9817
9818 static void
9819 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9820                                         gint         count)
9821 {
9822   GtkRBTree *cursor_tree = NULL;
9823   GtkRBNode *cursor_node = NULL;
9824   GtkTreePath *old_cursor_path = NULL;
9825   GtkTreePath *cursor_path = NULL;
9826   GtkRBTree *start_cursor_tree = NULL;
9827   GtkRBNode *start_cursor_node = NULL;
9828   gint y;
9829   gint window_y;
9830   gint vertical_separator;
9831
9832   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9833     return;
9834
9835   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9836     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9837   else
9838     /* This is sorta weird.  Focus in should give us a cursor */
9839     return;
9840
9841   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9842   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9843                             &cursor_tree, &cursor_node);
9844
9845   if (cursor_tree == NULL)
9846     {
9847       /* FIXME: we lost the cursor.  Should we try to get one? */
9848       gtk_tree_path_free (old_cursor_path);
9849       return;
9850     }
9851   g_return_if_fail (cursor_node != NULL);
9852
9853   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9854   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9855   y += tree_view->priv->cursor_offset;
9856   y += count * (int)tree_view->priv->vadjustment->page_increment;
9857   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9858
9859   if (y >= tree_view->priv->height)
9860     y = tree_view->priv->height - 1;
9861
9862   tree_view->priv->cursor_offset =
9863     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9864                              &cursor_tree, &cursor_node);
9865
9866   if (cursor_tree == NULL)
9867     {
9868       /* FIXME: we lost the cursor.  Should we try to get one? */
9869       gtk_tree_path_free (old_cursor_path);
9870       return;
9871     }
9872
9873   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9874     {
9875       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9876                              &cursor_tree, &cursor_node);
9877       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9878     }
9879
9880   y -= tree_view->priv->cursor_offset;
9881   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9882
9883   start_cursor_tree = cursor_tree;
9884   start_cursor_node = cursor_node;
9885
9886   if (! search_first_focusable_path (tree_view, &cursor_path,
9887                                      (count != -1),
9888                                      &cursor_tree, &cursor_node))
9889     {
9890       /* It looks like we reached the end of the view without finding
9891        * a focusable row.  We will step backwards to find the last
9892        * focusable row.
9893        */
9894       cursor_tree = start_cursor_tree;
9895       cursor_node = start_cursor_node;
9896       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9897
9898       search_first_focusable_path (tree_view, &cursor_path,
9899                                    (count == -1),
9900                                    &cursor_tree, &cursor_node);
9901     }
9902
9903   if (!cursor_path)
9904     goto cleanup;
9905
9906   /* update y */
9907   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9908
9909   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9910
9911   y -= window_y;
9912   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9913   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9914   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9915
9916   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9917     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9918
9919   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9920
9921 cleanup:
9922   gtk_tree_path_free (old_cursor_path);
9923   gtk_tree_path_free (cursor_path);
9924 }
9925
9926 static void
9927 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9928                                       gint         count)
9929 {
9930   GtkRBTree *cursor_tree = NULL;
9931   GtkRBNode *cursor_node = NULL;
9932   GtkTreePath *cursor_path = NULL;
9933   GtkTreeViewColumn *column;
9934   GtkTreeIter iter;
9935   GList *list;
9936   gboolean found_column = FALSE;
9937   gboolean rtl;
9938
9939   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9940
9941   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9942     return;
9943
9944   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9945     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9946   else
9947     return;
9948
9949   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9950   if (cursor_tree == NULL)
9951     return;
9952   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9953     {
9954       gtk_tree_path_free (cursor_path);
9955       return;
9956     }
9957   gtk_tree_path_free (cursor_path);
9958
9959   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9960   if (tree_view->priv->focus_column)
9961     {
9962       for (; list; list = (rtl ? list->prev : list->next))
9963         {
9964           if (list->data == tree_view->priv->focus_column)
9965             break;
9966         }
9967     }
9968
9969   while (list)
9970     {
9971       gboolean left, right;
9972
9973       column = list->data;
9974       if (column->visible == FALSE)
9975         goto loop_end;
9976
9977       gtk_tree_view_column_cell_set_cell_data (column,
9978                                                tree_view->priv->model,
9979                                                &iter,
9980                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9981                                                cursor_node->children?TRUE:FALSE);
9982
9983       if (rtl)
9984         {
9985           right = list->prev ? TRUE : FALSE;
9986           left = list->next ? TRUE : FALSE;
9987         }
9988       else
9989         {
9990           left = list->prev ? TRUE : FALSE;
9991           right = list->next ? TRUE : FALSE;
9992         }
9993
9994       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9995         {
9996           tree_view->priv->focus_column = column;
9997           found_column = TRUE;
9998           break;
9999         }
10000     loop_end:
10001       if (count == 1)
10002         list = rtl ? list->prev : list->next;
10003       else
10004         list = rtl ? list->next : list->prev;
10005     }
10006
10007   if (found_column)
10008     {
10009       if (!gtk_tree_view_has_special_cell (tree_view))
10010         _gtk_tree_view_queue_draw_node (tree_view,
10011                                         cursor_tree,
10012                                         cursor_node,
10013                                         NULL);
10014       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10015       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10016     }
10017   else
10018     {
10019       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10020     }
10021
10022   gtk_tree_view_clamp_column_visible (tree_view,
10023                                       tree_view->priv->focus_column, TRUE);
10024 }
10025
10026 static void
10027 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10028                                      gint         count)
10029 {
10030   GtkRBTree *cursor_tree;
10031   GtkRBNode *cursor_node;
10032   GtkTreePath *path;
10033   GtkTreePath *old_path;
10034
10035   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10036     return;
10037
10038   g_return_if_fail (tree_view->priv->tree != NULL);
10039
10040   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10041
10042   cursor_tree = tree_view->priv->tree;
10043   cursor_node = cursor_tree->root;
10044
10045   if (count == -1)
10046     {
10047       while (cursor_node && cursor_node->left != cursor_tree->nil)
10048         cursor_node = cursor_node->left;
10049
10050       /* Now go forward to find the first focusable row. */
10051       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10052       search_first_focusable_path (tree_view, &path,
10053                                    TRUE, &cursor_tree, &cursor_node);
10054     }
10055   else
10056     {
10057       do
10058         {
10059           while (cursor_node && cursor_node->right != cursor_tree->nil)
10060             cursor_node = cursor_node->right;
10061           if (cursor_node->children == NULL)
10062             break;
10063
10064           cursor_tree = cursor_node->children;
10065           cursor_node = cursor_tree->root;
10066         }
10067       while (1);
10068
10069       /* Now go backwards to find last focusable row. */
10070       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10071       search_first_focusable_path (tree_view, &path,
10072                                    FALSE, &cursor_tree, &cursor_node);
10073     }
10074
10075   if (!path)
10076     goto cleanup;
10077
10078   if (gtk_tree_path_compare (old_path, path))
10079     {
10080       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10081       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10082     }
10083   else
10084     {
10085       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10086     }
10087
10088 cleanup:
10089   gtk_tree_path_free (old_path);
10090   gtk_tree_path_free (path);
10091 }
10092
10093 static gboolean
10094 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10095 {
10096   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10097     return FALSE;
10098
10099   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10100     return FALSE;
10101
10102   gtk_tree_selection_select_all (tree_view->priv->selection);
10103
10104   return TRUE;
10105 }
10106
10107 static gboolean
10108 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10109 {
10110   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10111     return FALSE;
10112
10113   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10114     return FALSE;
10115
10116   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10117
10118   return TRUE;
10119 }
10120
10121 static gboolean
10122 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10123                                       gboolean     start_editing)
10124 {
10125   GtkRBTree *new_tree = NULL;
10126   GtkRBNode *new_node = NULL;
10127   GtkRBTree *cursor_tree = NULL;
10128   GtkRBNode *cursor_node = NULL;
10129   GtkTreePath *cursor_path = NULL;
10130   GtkTreeSelectMode mode = 0;
10131
10132   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10133     return FALSE;
10134
10135   if (tree_view->priv->cursor)
10136     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10137
10138   if (cursor_path == NULL)
10139     return FALSE;
10140
10141   _gtk_tree_view_find_node (tree_view, cursor_path,
10142                             &cursor_tree, &cursor_node);
10143
10144   if (cursor_tree == NULL)
10145     {
10146       gtk_tree_path_free (cursor_path);
10147       return FALSE;
10148     }
10149
10150   if (!tree_view->priv->shift_pressed && start_editing &&
10151       tree_view->priv->focus_column)
10152     {
10153       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10154         {
10155           gtk_tree_path_free (cursor_path);
10156           return TRUE;
10157         }
10158     }
10159
10160   if (tree_view->priv->ctrl_pressed)
10161     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10162   if (tree_view->priv->shift_pressed)
10163     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10164
10165   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10166                                             cursor_node,
10167                                             cursor_tree,
10168                                             cursor_path,
10169                                             mode,
10170                                             FALSE);
10171
10172   /* We bail out if the original (tree, node) don't exist anymore after
10173    * handling the selection-changed callback.  We do return TRUE because
10174    * the key press has been handled at this point.
10175    */
10176   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10177
10178   if (cursor_tree != new_tree || cursor_node != new_node)
10179     return FALSE;
10180
10181   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10182
10183   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10184   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10185
10186   if (!tree_view->priv->shift_pressed)
10187     gtk_tree_view_row_activated (tree_view, cursor_path,
10188                                  tree_view->priv->focus_column);
10189
10190   gtk_tree_path_free (cursor_path);
10191
10192   return TRUE;
10193 }
10194
10195 static gboolean
10196 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10197 {
10198   GtkRBTree *new_tree = NULL;
10199   GtkRBNode *new_node = NULL;
10200   GtkRBTree *cursor_tree = NULL;
10201   GtkRBNode *cursor_node = NULL;
10202   GtkTreePath *cursor_path = NULL;
10203
10204   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10205     return FALSE;
10206
10207   cursor_path = NULL;
10208   if (tree_view->priv->cursor)
10209     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10210
10211   if (cursor_path == NULL)
10212     return FALSE;
10213
10214   _gtk_tree_view_find_node (tree_view, cursor_path,
10215                             &cursor_tree, &cursor_node);
10216   if (cursor_tree == NULL)
10217     {
10218       gtk_tree_path_free (cursor_path);
10219       return FALSE;
10220     }
10221
10222   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10223                                             cursor_node,
10224                                             cursor_tree,
10225                                             cursor_path,
10226                                             GTK_TREE_SELECT_MODE_TOGGLE,
10227                                             FALSE);
10228
10229   /* We bail out if the original (tree, node) don't exist anymore after
10230    * handling the selection-changed callback.  We do return TRUE because
10231    * the key press has been handled at this point.
10232    */
10233   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10234
10235   if (cursor_tree != new_tree || cursor_node != new_node)
10236     return FALSE;
10237
10238   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10239
10240   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10241   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10242   gtk_tree_path_free (cursor_path);
10243
10244   return TRUE;
10245 }
10246
10247 static gboolean
10248 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10249                                                gboolean     logical,
10250                                                gboolean     expand,
10251                                                gboolean     open_all)
10252 {
10253   GtkTreePath *cursor_path = NULL;
10254   GtkRBTree *tree;
10255   GtkRBNode *node;
10256
10257   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10258     return FALSE;
10259
10260   cursor_path = NULL;
10261   if (tree_view->priv->cursor)
10262     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10263
10264   if (cursor_path == NULL)
10265     return FALSE;
10266
10267   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10268     return FALSE;
10269
10270   /* Don't handle the event if we aren't an expander */
10271   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10272     return FALSE;
10273
10274   if (!logical
10275       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10276     expand = !expand;
10277
10278   if (expand)
10279     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10280   else
10281     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10282
10283   gtk_tree_path_free (cursor_path);
10284
10285   return TRUE;
10286 }
10287
10288 static gboolean
10289 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10290 {
10291   GtkRBTree *cursor_tree = NULL;
10292   GtkRBNode *cursor_node = NULL;
10293   GtkTreePath *cursor_path = NULL;
10294   GdkModifierType state;
10295
10296   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10297     goto out;
10298
10299   cursor_path = NULL;
10300   if (tree_view->priv->cursor)
10301     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10302
10303   if (cursor_path == NULL)
10304     goto out;
10305
10306   _gtk_tree_view_find_node (tree_view, cursor_path,
10307                             &cursor_tree, &cursor_node);
10308   if (cursor_tree == NULL)
10309     {
10310       gtk_tree_path_free (cursor_path);
10311       goto out;
10312     }
10313
10314   if (cursor_tree->parent_node)
10315     {
10316       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10317       cursor_node = cursor_tree->parent_node;
10318       cursor_tree = cursor_tree->parent_tree;
10319
10320       gtk_tree_path_up (cursor_path);
10321
10322       if (gtk_get_current_event_state (&state))
10323         {
10324           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10325             tree_view->priv->ctrl_pressed = TRUE;
10326         }
10327
10328       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10329       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10330
10331       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10332       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10333       gtk_tree_path_free (cursor_path);
10334
10335       tree_view->priv->ctrl_pressed = FALSE;
10336
10337       return TRUE;
10338     }
10339
10340  out:
10341
10342   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10343   return FALSE;
10344 }
10345
10346 static gboolean
10347 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10348 {
10349   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10350   tree_view->priv->typeselect_flush_timeout = 0;
10351
10352   return FALSE;
10353 }
10354
10355 /* Cut and paste from gtkwindow.c */
10356 static void
10357 send_focus_change (GtkWidget *widget,
10358                    GdkDevice *device,
10359                    gboolean   in)
10360 {
10361   GdkDeviceManager *device_manager;
10362   GList *devices, *d;
10363
10364   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10365   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10366   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10367   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10368
10369   for (d = devices; d; d = d->next)
10370     {
10371       GdkDevice *dev = d->data;
10372       GdkEvent *fevent;
10373       GdkWindow *window;
10374
10375       if (dev->source != GDK_SOURCE_KEYBOARD)
10376         continue;
10377
10378       window = gtk_widget_get_window (widget);
10379
10380       /* Skip non-master keyboards that haven't
10381        * selected for events from this window
10382        */
10383       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10384           !gdk_window_get_device_events (window, dev))
10385         continue;
10386
10387       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10388
10389       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10390       fevent->focus_change.window = g_object_ref (window);
10391       fevent->focus_change.in = in;
10392       gdk_event_set_device (fevent, device);
10393
10394       gtk_widget_send_focus_change (widget, fevent);
10395
10396       gdk_event_free (fevent);
10397     }
10398 }
10399
10400 static void
10401 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10402 {
10403   GtkWidget *frame, *vbox, *toplevel;
10404   GdkScreen *screen;
10405
10406   if (tree_view->priv->search_custom_entry_set)
10407     return;
10408
10409   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10410   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10411
10412    if (tree_view->priv->search_window != NULL)
10413      {
10414        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10415          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10416                                       GTK_WINDOW (tree_view->priv->search_window));
10417        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10418          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10419                                          GTK_WINDOW (tree_view->priv->search_window));
10420
10421        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10422
10423        return;
10424      }
10425
10426   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10427   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10428
10429   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10430     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10431                                  GTK_WINDOW (tree_view->priv->search_window));
10432
10433   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10434                             GDK_WINDOW_TYPE_HINT_UTILITY);
10435   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10436   g_signal_connect (tree_view->priv->search_window, "delete-event",
10437                     G_CALLBACK (gtk_tree_view_search_delete_event),
10438                     tree_view);
10439   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10440                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10441                     tree_view);
10442   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10443                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10444                     tree_view);
10445   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10446                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10447                     tree_view);
10448
10449   frame = gtk_frame_new (NULL);
10450   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10451   gtk_widget_show (frame);
10452   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10453
10454   vbox = gtk_vbox_new (FALSE, 0);
10455   gtk_widget_show (vbox);
10456   gtk_container_add (GTK_CONTAINER (frame), vbox);
10457   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10458
10459   /* add entry */
10460   tree_view->priv->search_entry = gtk_entry_new ();
10461   gtk_widget_show (tree_view->priv->search_entry);
10462   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10463                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10464                     tree_view);
10465   g_signal_connect (tree_view->priv->search_entry,
10466                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10467                     tree_view);
10468   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10469                     "preedit-changed",
10470                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10471                     tree_view);
10472   gtk_container_add (GTK_CONTAINER (vbox),
10473                      tree_view->priv->search_entry);
10474
10475   gtk_widget_realize (tree_view->priv->search_entry);
10476 }
10477
10478 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10479  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10480  */
10481 static gboolean
10482 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10483                                              GdkDevice   *device,
10484                                              gboolean     keybinding)
10485 {
10486   /* We only start interactive search if we have focus or the columns
10487    * have focus.  If one of our children have focus, we don't want to
10488    * start the search.
10489    */
10490   GList *list;
10491   gboolean found_focus = FALSE;
10492   GtkWidgetClass *entry_parent_class;
10493
10494   if (!tree_view->priv->enable_search && !keybinding)
10495     return FALSE;
10496
10497   if (tree_view->priv->search_custom_entry_set)
10498     return FALSE;
10499
10500   if (tree_view->priv->search_window != NULL &&
10501       gtk_widget_get_visible (tree_view->priv->search_window))
10502     return TRUE;
10503
10504   for (list = tree_view->priv->columns; list; list = list->next)
10505     {
10506       GtkTreeViewColumn *column;
10507
10508       column = list->data;
10509       if (! column->visible)
10510         continue;
10511
10512       if (gtk_widget_has_focus (column->button))
10513         {
10514           found_focus = TRUE;
10515           break;
10516         }
10517     }
10518
10519   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10520     found_focus = TRUE;
10521
10522   if (!found_focus)
10523     return FALSE;
10524
10525   if (tree_view->priv->search_column < 0)
10526     return FALSE;
10527
10528   gtk_tree_view_ensure_interactive_directory (tree_view);
10529
10530   if (keybinding)
10531     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10532
10533   /* done, show it */
10534   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10535   gtk_widget_show (tree_view->priv->search_window);
10536   if (tree_view->priv->search_entry_changed_id == 0)
10537     {
10538       tree_view->priv->search_entry_changed_id =
10539         g_signal_connect (tree_view->priv->search_entry, "changed",
10540                           G_CALLBACK (gtk_tree_view_search_init),
10541                           tree_view);
10542     }
10543
10544   tree_view->priv->typeselect_flush_timeout =
10545     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10546                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10547                    tree_view);
10548
10549   /* Grab focus will select all the text.  We don't want that to happen, so we
10550    * call the parent instance and bypass the selection change.  This is probably
10551    * really non-kosher. */
10552   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10553   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10554
10555   /* send focus-in event */
10556   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10557
10558   /* search first matching iter */
10559   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10560
10561   return TRUE;
10562 }
10563
10564 static gboolean
10565 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10566 {
10567   return gtk_tree_view_real_start_interactive_search (tree_view,
10568                                                       gtk_get_current_event_device (),
10569                                                       TRUE);
10570 }
10571
10572 /* this function returns the new width of the column being resized given
10573  * the column and x position of the cursor; the x cursor position is passed
10574  * in as a pointer and automagicly corrected if it's beyond min/max limits
10575  */
10576 static gint
10577 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10578                                 gint       i,
10579                                 gint      *x)
10580 {
10581   GtkAllocation allocation;
10582   GtkTreeViewColumn *column;
10583   GtkRequisition button_req;
10584   gint width;
10585   gboolean rtl;
10586
10587   /* first translate the x position from widget->window
10588    * to clist->clist_window
10589    */
10590   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10591   column = g_list_nth (tree_view->priv->columns, i)->data;
10592   gtk_widget_get_allocation (column->button, &allocation);
10593   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
10594
10595   /* Clamp down the value */
10596   if (column->min_width == -1)
10597     {
10598       gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
10599       width = MAX (button_req.width, width);
10600     }
10601   else
10602     width = MAX (column->min_width,
10603                  width);
10604   if (column->max_width != -1)
10605     width = MIN (width, column->max_width);
10606
10607   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
10608
10609   return width;
10610 }
10611
10612
10613 /* FIXME this adjust_allocation is a big cut-and-paste from
10614  * GtkCList, needs to be some "official" way to do this
10615  * factored out.
10616  */
10617 typedef struct
10618 {
10619   GdkWindow *window;
10620   int dx;
10621   int dy;
10622 } ScrollData;
10623
10624 /* The window to which widget->window is relative */
10625 #define ALLOCATION_WINDOW(widget)               \
10626    (!gtk_widget_get_has_window (widget) ?                   \
10627     gtk_widget_get_window (widget) :                        \
10628     gdk_window_get_parent (gtk_widget_get_window (widget)))
10629
10630 static void
10631 adjust_allocation_recurse (GtkWidget *widget,
10632                            gpointer   data)
10633 {
10634   GtkAllocation allocation;
10635   ScrollData *scroll_data = data;
10636
10637   /* Need to really size allocate instead of just poking
10638    * into widget->allocation if the widget is not realized.
10639    * FIXME someone figure out why this was.
10640    */
10641   gtk_widget_get_allocation (widget, &allocation);
10642   if (!gtk_widget_get_realized (widget))
10643     {
10644       if (gtk_widget_get_visible (widget))
10645         {
10646           GdkRectangle tmp_rectangle = allocation;
10647           tmp_rectangle.x += scroll_data->dx;
10648           tmp_rectangle.y += scroll_data->dy;
10649
10650           gtk_widget_size_allocate (widget, &tmp_rectangle);
10651         }
10652     }
10653   else
10654     {
10655       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10656         {
10657           allocation.x += scroll_data->dx;
10658           allocation.y += scroll_data->dy;
10659           gtk_widget_set_allocation (widget, &allocation);
10660
10661           if (GTK_IS_CONTAINER (widget))
10662             gtk_container_forall (GTK_CONTAINER (widget),
10663                                   adjust_allocation_recurse,
10664                                   data);
10665         }
10666     }
10667 }
10668
10669 static void
10670 adjust_allocation (GtkWidget *widget,
10671                    int        dx,
10672                    int        dy)
10673 {
10674   ScrollData scroll_data;
10675
10676   if (gtk_widget_get_realized (widget))
10677     scroll_data.window = ALLOCATION_WINDOW (widget);
10678   else
10679     scroll_data.window = NULL;
10680
10681   scroll_data.dx = dx;
10682   scroll_data.dy = dy;
10683
10684   adjust_allocation_recurse (widget, &scroll_data);
10685 }
10686
10687 /* Callbacks */
10688 static void
10689 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10690                                   GtkTreeView   *tree_view)
10691 {
10692   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10693     {
10694       gint dy;
10695
10696       gdk_window_move (tree_view->priv->bin_window,
10697                        - tree_view->priv->hadjustment->value,
10698                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10699       gdk_window_move (tree_view->priv->header_window,
10700                        - tree_view->priv->hadjustment->value,
10701                        0);
10702       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10703       if (dy)
10704         {
10705           update_prelight (tree_view,
10706                            tree_view->priv->event_last_x,
10707                            tree_view->priv->event_last_y - dy);
10708
10709           if (tree_view->priv->edited_column &&
10710               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10711             {
10712               GList *list;
10713               GtkWidget *widget;
10714               GtkTreeViewChild *child = NULL;
10715
10716               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10717               adjust_allocation (widget, 0, dy);
10718
10719               for (list = tree_view->priv->children; list; list = list->next)
10720                 {
10721                   child = (GtkTreeViewChild *)list->data;
10722                   if (child->widget == widget)
10723                     {
10724                       child->y += dy;
10725                       break;
10726                     }
10727                 }
10728             }
10729         }
10730       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10731
10732       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10733         {
10734           /* update our dy and top_row */
10735           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10736
10737           if (!tree_view->priv->in_top_row_to_dy)
10738             gtk_tree_view_dy_to_top_row (tree_view);
10739         }
10740
10741       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10742       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10743     }
10744 }
10745
10746 \f
10747
10748 /* Public methods
10749  */
10750
10751 /**
10752  * gtk_tree_view_new:
10753  *
10754  * Creates a new #GtkTreeView widget.
10755  *
10756  * Return value: A newly created #GtkTreeView widget.
10757  **/
10758 GtkWidget *
10759 gtk_tree_view_new (void)
10760 {
10761   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10762 }
10763
10764 /**
10765  * gtk_tree_view_new_with_model:
10766  * @model: the model.
10767  *
10768  * Creates a new #GtkTreeView widget with the model initialized to @model.
10769  *
10770  * Return value: A newly created #GtkTreeView widget.
10771  **/
10772 GtkWidget *
10773 gtk_tree_view_new_with_model (GtkTreeModel *model)
10774 {
10775   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10776 }
10777
10778 /* Public Accessors
10779  */
10780
10781 /**
10782  * gtk_tree_view_get_model:
10783  * @tree_view: a #GtkTreeView
10784  *
10785  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10786  * model is unset.
10787  *
10788  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10789  **/
10790 GtkTreeModel *
10791 gtk_tree_view_get_model (GtkTreeView *tree_view)
10792 {
10793   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10794
10795   return tree_view->priv->model;
10796 }
10797
10798 /**
10799  * gtk_tree_view_set_model:
10800  * @tree_view: A #GtkTreeNode.
10801  * @model: (allow-none): The model.
10802  *
10803  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10804  * set, it will remove it before setting the new model.  If @model is %NULL,
10805  * then it will unset the old model.
10806  **/
10807 void
10808 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10809                          GtkTreeModel *model)
10810 {
10811   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10812   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10813
10814   if (model == tree_view->priv->model)
10815     return;
10816
10817   if (tree_view->priv->scroll_to_path)
10818     {
10819       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10820       tree_view->priv->scroll_to_path = NULL;
10821     }
10822
10823   if (tree_view->priv->model)
10824     {
10825       GList *tmplist = tree_view->priv->columns;
10826
10827       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10828       gtk_tree_view_stop_editing (tree_view, TRUE);
10829
10830       remove_expand_collapse_timeout (tree_view);
10831
10832       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10833                                             gtk_tree_view_row_changed,
10834                                             tree_view);
10835       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10836                                             gtk_tree_view_row_inserted,
10837                                             tree_view);
10838       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10839                                             gtk_tree_view_row_has_child_toggled,
10840                                             tree_view);
10841       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10842                                             gtk_tree_view_row_deleted,
10843                                             tree_view);
10844       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10845                                             gtk_tree_view_rows_reordered,
10846                                             tree_view);
10847
10848       for (; tmplist; tmplist = tmplist->next)
10849         _gtk_tree_view_column_unset_model (tmplist->data,
10850                                            tree_view->priv->model);
10851
10852       if (tree_view->priv->tree)
10853         gtk_tree_view_free_rbtree (tree_view);
10854
10855       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10856       tree_view->priv->drag_dest_row = NULL;
10857       gtk_tree_row_reference_free (tree_view->priv->cursor);
10858       tree_view->priv->cursor = NULL;
10859       gtk_tree_row_reference_free (tree_view->priv->anchor);
10860       tree_view->priv->anchor = NULL;
10861       gtk_tree_row_reference_free (tree_view->priv->top_row);
10862       tree_view->priv->top_row = NULL;
10863       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10864       tree_view->priv->scroll_to_path = NULL;
10865
10866       tree_view->priv->scroll_to_column = NULL;
10867
10868       g_object_unref (tree_view->priv->model);
10869
10870       tree_view->priv->search_column = -1;
10871       tree_view->priv->fixed_height_check = 0;
10872       tree_view->priv->fixed_height = -1;
10873       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10874       tree_view->priv->last_button_x = -1;
10875       tree_view->priv->last_button_y = -1;
10876     }
10877
10878   tree_view->priv->model = model;
10879
10880   if (tree_view->priv->model)
10881     {
10882       gint i;
10883       GtkTreePath *path;
10884       GtkTreeIter iter;
10885       GtkTreeModelFlags flags;
10886
10887       if (tree_view->priv->search_column == -1)
10888         {
10889           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10890             {
10891               GType type = gtk_tree_model_get_column_type (model, i);
10892
10893               if (g_value_type_transformable (type, G_TYPE_STRING))
10894                 {
10895                   tree_view->priv->search_column = i;
10896                   break;
10897                 }
10898             }
10899         }
10900
10901       g_object_ref (tree_view->priv->model);
10902       g_signal_connect (tree_view->priv->model,
10903                         "row-changed",
10904                         G_CALLBACK (gtk_tree_view_row_changed),
10905                         tree_view);
10906       g_signal_connect (tree_view->priv->model,
10907                         "row-inserted",
10908                         G_CALLBACK (gtk_tree_view_row_inserted),
10909                         tree_view);
10910       g_signal_connect (tree_view->priv->model,
10911                         "row-has-child-toggled",
10912                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10913                         tree_view);
10914       g_signal_connect (tree_view->priv->model,
10915                         "row-deleted",
10916                         G_CALLBACK (gtk_tree_view_row_deleted),
10917                         tree_view);
10918       g_signal_connect (tree_view->priv->model,
10919                         "rows-reordered",
10920                         G_CALLBACK (gtk_tree_view_rows_reordered),
10921                         tree_view);
10922
10923       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10924       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10925         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10926       else
10927         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10928
10929       path = gtk_tree_path_new_first ();
10930       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10931         {
10932           tree_view->priv->tree = _gtk_rbtree_new ();
10933           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10934         }
10935       gtk_tree_path_free (path);
10936
10937       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10938       install_presize_handler (tree_view);
10939     }
10940
10941   g_object_notify (G_OBJECT (tree_view), "model");
10942
10943   if (tree_view->priv->selection)
10944   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10945
10946   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10947     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10948 }
10949
10950 /**
10951  * gtk_tree_view_get_selection:
10952  * @tree_view: A #GtkTreeView.
10953  *
10954  * Gets the #GtkTreeSelection associated with @tree_view.
10955  *
10956  * Return value: (transfer none): A #GtkTreeSelection object.
10957  **/
10958 GtkTreeSelection *
10959 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10960 {
10961   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10962
10963   return tree_view->priv->selection;
10964 }
10965
10966 /**
10967  * gtk_tree_view_get_hadjustment:
10968  * @tree_view: A #GtkTreeView
10969  *
10970  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10971  *
10972  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
10973  *     if none is currently being used.
10974  **/
10975 GtkAdjustment *
10976 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10977 {
10978   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10979
10980   if (tree_view->priv->hadjustment == NULL)
10981     gtk_tree_view_set_hadjustment (tree_view, NULL);
10982
10983   return tree_view->priv->hadjustment;
10984 }
10985
10986 /**
10987  * gtk_tree_view_set_hadjustment:
10988  * @tree_view: A #GtkTreeView
10989  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10990  *
10991  * Sets the #GtkAdjustment for the current horizontal aspect.
10992  **/
10993 void
10994 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10995                                GtkAdjustment *adjustment)
10996 {
10997   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10998
10999   gtk_tree_view_set_adjustments (tree_view,
11000                                  adjustment,
11001                                  tree_view->priv->vadjustment);
11002
11003   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11004 }
11005
11006 /**
11007  * gtk_tree_view_get_vadjustment:
11008  * @tree_view: A #GtkTreeView
11009  *
11010  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11011  *
11012  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11013  *     if none is currently being used.
11014  **/
11015 GtkAdjustment *
11016 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11017 {
11018   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11019
11020   if (tree_view->priv->vadjustment == NULL)
11021     gtk_tree_view_set_vadjustment (tree_view, NULL);
11022
11023   return tree_view->priv->vadjustment;
11024 }
11025
11026 /**
11027  * gtk_tree_view_set_vadjustment:
11028  * @tree_view: A #GtkTreeView
11029  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11030  *
11031  * Sets the #GtkAdjustment for the current vertical aspect.
11032  **/
11033 void
11034 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11035                                GtkAdjustment *adjustment)
11036 {
11037   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11038
11039   gtk_tree_view_set_adjustments (tree_view,
11040                                  tree_view->priv->hadjustment,
11041                                  adjustment);
11042
11043   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11044 }
11045
11046 /* Column and header operations */
11047
11048 /**
11049  * gtk_tree_view_get_headers_visible:
11050  * @tree_view: A #GtkTreeView.
11051  *
11052  * Returns %TRUE if the headers on the @tree_view are visible.
11053  *
11054  * Return value: Whether the headers are visible or not.
11055  **/
11056 gboolean
11057 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11058 {
11059   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11060
11061   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11062 }
11063
11064 /**
11065  * gtk_tree_view_set_headers_visible:
11066  * @tree_view: A #GtkTreeView.
11067  * @headers_visible: %TRUE if the headers are visible
11068  *
11069  * Sets the visibility state of the headers.
11070  **/
11071 void
11072 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11073                                    gboolean     headers_visible)
11074 {
11075   gint x, y;
11076   GList *list;
11077   GtkTreeViewColumn *column;
11078   GtkAllocation allocation;
11079
11080   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11081
11082   headers_visible = !! headers_visible;
11083
11084   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11085     return;
11086
11087   if (headers_visible)
11088     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11089   else
11090     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11091
11092   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11093     {
11094       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11095       if (headers_visible)
11096         {
11097           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11098           gdk_window_move_resize (tree_view->priv->bin_window,
11099                                   x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view),
11100                                   tree_view->priv->width, allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11101
11102           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11103             gtk_tree_view_map_buttons (tree_view);
11104         }
11105       else
11106         {
11107           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11108
11109           for (list = tree_view->priv->columns; list; list = list->next)
11110             {
11111               column = list->data;
11112               gtk_widget_unmap (column->button);
11113             }
11114           gdk_window_hide (tree_view->priv->header_window);
11115         }
11116     }
11117
11118   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11119   tree_view->priv->vadjustment->page_size = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11120   tree_view->priv->vadjustment->page_increment = (allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11121   tree_view->priv->vadjustment->lower = 0;
11122   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11123   gtk_adjustment_changed (tree_view->priv->vadjustment);
11124
11125   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11126
11127   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11128 }
11129
11130 /**
11131  * gtk_tree_view_columns_autosize:
11132  * @tree_view: A #GtkTreeView.
11133  *
11134  * Resizes all columns to their optimal width. Only works after the
11135  * treeview has been realized.
11136  **/
11137 void
11138 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11139 {
11140   gboolean dirty = FALSE;
11141   GList *list;
11142   GtkTreeViewColumn *column;
11143
11144   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11145
11146   for (list = tree_view->priv->columns; list; list = list->next)
11147     {
11148       column = list->data;
11149       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11150         continue;
11151       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11152       dirty = TRUE;
11153     }
11154
11155   if (dirty)
11156     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11157 }
11158
11159 /**
11160  * gtk_tree_view_set_headers_clickable:
11161  * @tree_view: A #GtkTreeView.
11162  * @setting: %TRUE if the columns are clickable.
11163  *
11164  * Allow the column title buttons to be clicked.
11165  **/
11166 void
11167 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11168                                      gboolean   setting)
11169 {
11170   GList *list;
11171
11172   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11173
11174   for (list = tree_view->priv->columns; list; list = list->next)
11175     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11176
11177   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11178 }
11179
11180
11181 /**
11182  * gtk_tree_view_get_headers_clickable:
11183  * @tree_view: A #GtkTreeView.
11184  *
11185  * Returns whether all header columns are clickable.
11186  *
11187  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11188  *
11189  * Since: 2.10
11190  **/
11191 gboolean
11192 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11193 {
11194   GList *list;
11195
11196   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11197
11198   for (list = tree_view->priv->columns; list; list = list->next)
11199     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11200       return FALSE;
11201
11202   return TRUE;
11203 }
11204
11205 /**
11206  * gtk_tree_view_set_rules_hint
11207  * @tree_view: a #GtkTreeView
11208  * @setting: %TRUE if the tree requires reading across rows
11209  *
11210  * This function tells GTK+ that the user interface for your
11211  * application requires users to read across tree rows and associate
11212  * cells with one another. By default, GTK+ will then render the tree
11213  * with alternating row colors. Do <emphasis>not</emphasis> use it
11214  * just because you prefer the appearance of the ruled tree; that's a
11215  * question for the theme. Some themes will draw tree rows in
11216  * alternating colors even when rules are turned off, and users who
11217  * prefer that appearance all the time can choose those themes. You
11218  * should call this function only as a <emphasis>semantic</emphasis>
11219  * hint to the theme engine that your tree makes alternating colors
11220  * useful from a functional standpoint (since it has lots of columns,
11221  * generally).
11222  *
11223  **/
11224 void
11225 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11226                               gboolean      setting)
11227 {
11228   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11229
11230   setting = setting != FALSE;
11231
11232   if (tree_view->priv->has_rules != setting)
11233     {
11234       tree_view->priv->has_rules = setting;
11235       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11236     }
11237
11238   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11239 }
11240
11241 /**
11242  * gtk_tree_view_get_rules_hint
11243  * @tree_view: a #GtkTreeView
11244  *
11245  * Gets the setting set by gtk_tree_view_set_rules_hint().
11246  *
11247  * Return value: %TRUE if rules are useful for the user of this tree
11248  **/
11249 gboolean
11250 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11251 {
11252   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11253
11254   return tree_view->priv->has_rules;
11255 }
11256
11257 /* Public Column functions
11258  */
11259
11260 /**
11261  * gtk_tree_view_append_column:
11262  * @tree_view: A #GtkTreeView.
11263  * @column: The #GtkTreeViewColumn to add.
11264  *
11265  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11266  * mode enabled, then @column must have its "sizing" property set to be
11267  * GTK_TREE_VIEW_COLUMN_FIXED.
11268  *
11269  * Return value: The number of columns in @tree_view after appending.
11270  **/
11271 gint
11272 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11273                              GtkTreeViewColumn *column)
11274 {
11275   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11276   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11277   g_return_val_if_fail (column->tree_view == NULL, -1);
11278
11279   return gtk_tree_view_insert_column (tree_view, column, -1);
11280 }
11281
11282
11283 /**
11284  * gtk_tree_view_remove_column:
11285  * @tree_view: A #GtkTreeView.
11286  * @column: The #GtkTreeViewColumn to remove.
11287  *
11288  * Removes @column from @tree_view.
11289  *
11290  * Return value: The number of columns in @tree_view after removing.
11291  **/
11292 gint
11293 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11294                              GtkTreeViewColumn *column)
11295 {
11296   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11297   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11298   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11299
11300   if (tree_view->priv->focus_column == column)
11301     tree_view->priv->focus_column = NULL;
11302
11303   if (tree_view->priv->edited_column == column)
11304     {
11305       gtk_tree_view_stop_editing (tree_view, TRUE);
11306
11307       /* no need to, but just to be sure ... */
11308       tree_view->priv->edited_column = NULL;
11309     }
11310
11311   if (tree_view->priv->expander_column == column)
11312     tree_view->priv->expander_column = NULL;
11313
11314   g_signal_handlers_disconnect_by_func (column,
11315                                         G_CALLBACK (column_sizing_notify),
11316                                         tree_view);
11317
11318   _gtk_tree_view_column_unset_tree_view (column);
11319
11320   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11321   tree_view->priv->n_columns--;
11322
11323   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11324     {
11325       GList *list;
11326
11327       _gtk_tree_view_column_unrealize_button (column);
11328       for (list = tree_view->priv->columns; list; list = list->next)
11329         {
11330           GtkTreeViewColumn *tmp_column;
11331
11332           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11333           if (tmp_column->visible)
11334             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11335         }
11336
11337       if (tree_view->priv->n_columns == 0 &&
11338           gtk_tree_view_get_headers_visible (tree_view))
11339         gdk_window_hide (tree_view->priv->header_window);
11340
11341       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11342     }
11343
11344   g_object_unref (column);
11345   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11346
11347   return tree_view->priv->n_columns;
11348 }
11349
11350 /**
11351  * gtk_tree_view_insert_column:
11352  * @tree_view: A #GtkTreeView.
11353  * @column: The #GtkTreeViewColumn to be inserted.
11354  * @position: The position to insert @column in.
11355  *
11356  * This inserts the @column into the @tree_view at @position.  If @position is
11357  * -1, then the column is inserted at the end. If @tree_view has
11358  * "fixed_height" mode enabled, then @column must have its "sizing" property
11359  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11360  *
11361  * Return value: The number of columns in @tree_view after insertion.
11362  **/
11363 gint
11364 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11365                              GtkTreeViewColumn *column,
11366                              gint               position)
11367 {
11368   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11369   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11370   g_return_val_if_fail (column->tree_view == NULL, -1);
11371
11372   if (tree_view->priv->fixed_height_mode)
11373     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11374                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11375
11376   g_object_ref_sink (column);
11377
11378   if (tree_view->priv->n_columns == 0 &&
11379       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11380       gtk_tree_view_get_headers_visible (tree_view))
11381     {
11382       gdk_window_show (tree_view->priv->header_window);
11383     }
11384
11385   g_signal_connect (column, "notify::sizing",
11386                     G_CALLBACK (column_sizing_notify), tree_view);
11387
11388   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11389                                             column, position);
11390   tree_view->priv->n_columns++;
11391
11392   _gtk_tree_view_column_set_tree_view (column, tree_view);
11393
11394   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11395     {
11396       GList *list;
11397
11398       _gtk_tree_view_column_realize_button (column);
11399
11400       for (list = tree_view->priv->columns; list; list = list->next)
11401         {
11402           column = GTK_TREE_VIEW_COLUMN (list->data);
11403           if (column->visible)
11404             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11405         }
11406       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11407     }
11408
11409   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11410
11411   return tree_view->priv->n_columns;
11412 }
11413
11414 /**
11415  * gtk_tree_view_insert_column_with_attributes:
11416  * @tree_view: A #GtkTreeView
11417  * @position: The position to insert the new column in.
11418  * @title: The title to set the header to.
11419  * @cell: The #GtkCellRenderer.
11420  * @Varargs: A %NULL-terminated list of attributes.
11421  *
11422  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11423  * @position.  If @position is -1, then the newly created column is inserted at
11424  * the end.  The column is initialized with the attributes given. If @tree_view
11425  * has "fixed_height" mode enabled, then the new column will have its sizing
11426  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11427  *
11428  * Return value: The number of columns in @tree_view after insertion.
11429  **/
11430 gint
11431 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11432                                              gint             position,
11433                                              const gchar     *title,
11434                                              GtkCellRenderer *cell,
11435                                              ...)
11436 {
11437   GtkTreeViewColumn *column;
11438   gchar *attribute;
11439   va_list args;
11440   gint column_id;
11441
11442   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11443
11444   column = gtk_tree_view_column_new ();
11445   if (tree_view->priv->fixed_height_mode)
11446     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11447
11448   gtk_tree_view_column_set_title (column, title);
11449   gtk_tree_view_column_pack_start (column, cell, TRUE);
11450
11451   va_start (args, cell);
11452
11453   attribute = va_arg (args, gchar *);
11454
11455   while (attribute != NULL)
11456     {
11457       column_id = va_arg (args, gint);
11458       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11459       attribute = va_arg (args, gchar *);
11460     }
11461
11462   va_end (args);
11463
11464   gtk_tree_view_insert_column (tree_view, column, position);
11465
11466   return tree_view->priv->n_columns;
11467 }
11468
11469 /**
11470  * gtk_tree_view_insert_column_with_data_func:
11471  * @tree_view: a #GtkTreeView
11472  * @position: Position to insert, -1 for append
11473  * @title: column title
11474  * @cell: cell renderer for column
11475  * @func: function to set attributes of cell renderer
11476  * @data: data for @func
11477  * @dnotify: destroy notifier for @data
11478  *
11479  * Convenience function that inserts a new column into the #GtkTreeView
11480  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11481  * attributes (normally using data from the model). See also
11482  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11483  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11484  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11485  *
11486  * Return value: number of columns in the tree view post-insert
11487  **/
11488 gint
11489 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11490                                              gint                       position,
11491                                              const gchar               *title,
11492                                              GtkCellRenderer           *cell,
11493                                              GtkTreeCellDataFunc        func,
11494                                              gpointer                   data,
11495                                              GDestroyNotify             dnotify)
11496 {
11497   GtkTreeViewColumn *column;
11498
11499   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11500
11501   column = gtk_tree_view_column_new ();
11502   if (tree_view->priv->fixed_height_mode)
11503     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11504
11505   gtk_tree_view_column_set_title (column, title);
11506   gtk_tree_view_column_pack_start (column, cell, TRUE);
11507   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11508
11509   gtk_tree_view_insert_column (tree_view, column, position);
11510
11511   return tree_view->priv->n_columns;
11512 }
11513
11514 /**
11515  * gtk_tree_view_get_column:
11516  * @tree_view: A #GtkTreeView.
11517  * @n: The position of the column, counting from 0.
11518  *
11519  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11520  *
11521  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
11522  *     position is outside the range of columns.
11523  **/
11524 GtkTreeViewColumn *
11525 gtk_tree_view_get_column (GtkTreeView *tree_view,
11526                           gint         n)
11527 {
11528   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11529
11530   if (n < 0 || n >= tree_view->priv->n_columns)
11531     return NULL;
11532
11533   if (tree_view->priv->columns == NULL)
11534     return NULL;
11535
11536   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11537 }
11538
11539 /**
11540  * gtk_tree_view_get_columns:
11541  * @tree_view: A #GtkTreeView
11542  *
11543  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11544  * The returned list must be freed with g_list_free ().
11545  *
11546  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11547  **/
11548 GList *
11549 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11550 {
11551   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11552
11553   return g_list_copy (tree_view->priv->columns);
11554 }
11555
11556 /**
11557  * gtk_tree_view_move_column_after:
11558  * @tree_view: A #GtkTreeView
11559  * @column: The #GtkTreeViewColumn to be moved.
11560  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11561  *
11562  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11563  * @column is placed in the first position.
11564  **/
11565 void
11566 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11567                                  GtkTreeViewColumn *column,
11568                                  GtkTreeViewColumn *base_column)
11569 {
11570   GList *column_list_el, *base_el = NULL;
11571
11572   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11573
11574   column_list_el = g_list_find (tree_view->priv->columns, column);
11575   g_return_if_fail (column_list_el != NULL);
11576
11577   if (base_column)
11578     {
11579       base_el = g_list_find (tree_view->priv->columns, base_column);
11580       g_return_if_fail (base_el != NULL);
11581     }
11582
11583   if (column_list_el->prev == base_el)
11584     return;
11585
11586   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11587   if (base_el == NULL)
11588     {
11589       column_list_el->prev = NULL;
11590       column_list_el->next = tree_view->priv->columns;
11591       if (column_list_el->next)
11592         column_list_el->next->prev = column_list_el;
11593       tree_view->priv->columns = column_list_el;
11594     }
11595   else
11596     {
11597       column_list_el->prev = base_el;
11598       column_list_el->next = base_el->next;
11599       if (column_list_el->next)
11600         column_list_el->next->prev = column_list_el;
11601       base_el->next = column_list_el;
11602     }
11603
11604   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11605     {
11606       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11607       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11608     }
11609
11610   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11611 }
11612
11613 /**
11614  * gtk_tree_view_set_expander_column:
11615  * @tree_view: A #GtkTreeView
11616  * @column: %NULL, or the column to draw the expander arrow at.
11617  *
11618  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11619  * If @column is %NULL, then the expander arrow is always at the first
11620  * visible column.
11621  *
11622  * If you do not want expander arrow to appear in your tree, set the
11623  * expander column to a hidden column.
11624  **/
11625 void
11626 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11627                                    GtkTreeViewColumn *column)
11628 {
11629   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11630   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11631
11632   if (tree_view->priv->expander_column != column)
11633     {
11634       GList *list;
11635
11636       if (column)
11637         {
11638           /* Confirm that column is in tree_view */
11639           for (list = tree_view->priv->columns; list; list = list->next)
11640             if (list->data == column)
11641               break;
11642           g_return_if_fail (list != NULL);
11643         }
11644
11645       tree_view->priv->expander_column = column;
11646       g_object_notify (G_OBJECT (tree_view), "expander-column");
11647     }
11648 }
11649
11650 /**
11651  * gtk_tree_view_get_expander_column:
11652  * @tree_view: A #GtkTreeView
11653  *
11654  * Returns the column that is the current expander column.
11655  * This column has the expander arrow drawn next to it.
11656  *
11657  * Return value: (transfer none): The expander column.
11658  **/
11659 GtkTreeViewColumn *
11660 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11661 {
11662   GList *list;
11663
11664   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11665
11666   for (list = tree_view->priv->columns; list; list = list->next)
11667     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11668       return (GtkTreeViewColumn *) list->data;
11669   return NULL;
11670 }
11671
11672
11673 /**
11674  * gtk_tree_view_set_column_drag_function:
11675  * @tree_view: A #GtkTreeView.
11676  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11677  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11678  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11679  *
11680  * Sets a user function for determining where a column may be dropped when
11681  * dragged.  This function is called on every column pair in turn at the
11682  * beginning of a column drag to determine where a drop can take place.  The
11683  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11684  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11685  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11686  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11687  * @tree_view reverts to the default behavior of allowing all columns to be
11688  * dropped everywhere.
11689  **/
11690 void
11691 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11692                                         GtkTreeViewColumnDropFunc  func,
11693                                         gpointer                   user_data,
11694                                         GDestroyNotify             destroy)
11695 {
11696   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11697
11698   if (tree_view->priv->column_drop_func_data_destroy)
11699     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11700
11701   tree_view->priv->column_drop_func = func;
11702   tree_view->priv->column_drop_func_data = user_data;
11703   tree_view->priv->column_drop_func_data_destroy = destroy;
11704 }
11705
11706 /**
11707  * gtk_tree_view_scroll_to_point:
11708  * @tree_view: a #GtkTreeView
11709  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11710  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11711  *
11712  * Scrolls the tree view such that the top-left corner of the visible
11713  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11714  * in tree coordinates.  The @tree_view must be realized before
11715  * this function is called.  If it isn't, you probably want to be
11716  * using gtk_tree_view_scroll_to_cell().
11717  *
11718  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11719  **/
11720 void
11721 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11722                                gint         tree_x,
11723                                gint         tree_y)
11724 {
11725   GtkAdjustment *hadj;
11726   GtkAdjustment *vadj;
11727
11728   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11729   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11730
11731   hadj = tree_view->priv->hadjustment;
11732   vadj = tree_view->priv->vadjustment;
11733
11734   if (tree_x != -1)
11735     gtk_adjustment_set_value (hadj, tree_x);
11736   if (tree_y != -1)
11737     gtk_adjustment_set_value (vadj, tree_y);
11738 }
11739
11740 /**
11741  * gtk_tree_view_scroll_to_cell:
11742  * @tree_view: A #GtkTreeView.
11743  * @path: (allow-none): The path of the row to move to, or %NULL.
11744  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11745  * @use_align: whether to use alignment arguments, or %FALSE.
11746  * @row_align: The vertical alignment of the row specified by @path.
11747  * @col_align: The horizontal alignment of the column specified by @column.
11748  *
11749  * Moves the alignments of @tree_view to the position specified by @column and
11750  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11751  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11752  * or @path need to be non-%NULL.  @row_align determines where the row is
11753  * placed, and @col_align determines where @column is placed.  Both are expected
11754  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11755  * right/bottom alignment, 0.5 means center.
11756  *
11757  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11758  * tree does the minimum amount of work to scroll the cell onto the screen.
11759  * This means that the cell will be scrolled to the edge closest to its current
11760  * position.  If the cell is currently visible on the screen, nothing is done.
11761  *
11762  * This function only works if the model is set, and @path is a valid row on the
11763  * model.  If the model changes before the @tree_view is realized, the centered
11764  * path will be modified to reflect this change.
11765  **/
11766 void
11767 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11768                               GtkTreePath       *path,
11769                               GtkTreeViewColumn *column,
11770                               gboolean           use_align,
11771                               gfloat             row_align,
11772                               gfloat             col_align)
11773 {
11774   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11775   g_return_if_fail (tree_view->priv->model != NULL);
11776   g_return_if_fail (tree_view->priv->tree != NULL);
11777   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11778   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11779   g_return_if_fail (path != NULL || column != NULL);
11780
11781 #if 0
11782   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11783            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11784 #endif
11785   row_align = CLAMP (row_align, 0.0, 1.0);
11786   col_align = CLAMP (col_align, 0.0, 1.0);
11787
11788
11789   /* Note: Despite the benefits that come from having one code path for the
11790    * scrolling code, we short-circuit validate_visible_area's immplementation as
11791    * it is much slower than just going to the point.
11792    */
11793   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11794       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11795       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11796       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11797     {
11798       if (tree_view->priv->scroll_to_path)
11799         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11800
11801       tree_view->priv->scroll_to_path = NULL;
11802       tree_view->priv->scroll_to_column = NULL;
11803
11804       if (path)
11805         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11806       if (column)
11807         tree_view->priv->scroll_to_column = column;
11808       tree_view->priv->scroll_to_use_align = use_align;
11809       tree_view->priv->scroll_to_row_align = row_align;
11810       tree_view->priv->scroll_to_col_align = col_align;
11811
11812       install_presize_handler (tree_view);
11813     }
11814   else
11815     {
11816       GdkRectangle cell_rect;
11817       GdkRectangle vis_rect;
11818       gint dest_x, dest_y;
11819
11820       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11821       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11822
11823       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11824
11825       dest_x = vis_rect.x;
11826       dest_y = vis_rect.y;
11827
11828       if (column)
11829         {
11830           if (use_align)
11831             {
11832               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11833             }
11834           else
11835             {
11836               if (cell_rect.x < vis_rect.x)
11837                 dest_x = cell_rect.x;
11838               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11839                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11840             }
11841         }
11842
11843       if (path)
11844         {
11845           if (use_align)
11846             {
11847               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11848               dest_y = MAX (dest_y, 0);
11849             }
11850           else
11851             {
11852               if (cell_rect.y < vis_rect.y)
11853                 dest_y = cell_rect.y;
11854               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11855                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11856             }
11857         }
11858
11859       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11860     }
11861 }
11862
11863 /**
11864  * gtk_tree_view_row_activated:
11865  * @tree_view: A #GtkTreeView
11866  * @path: The #GtkTreePath to be activated.
11867  * @column: The #GtkTreeViewColumn to be activated.
11868  *
11869  * Activates the cell determined by @path and @column.
11870  **/
11871 void
11872 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11873                              GtkTreePath       *path,
11874                              GtkTreeViewColumn *column)
11875 {
11876   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11877
11878   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11879 }
11880
11881
11882 static void
11883 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11884                                           GtkRBNode *node,
11885                                           gpointer   data)
11886 {
11887   GtkTreeView *tree_view = data;
11888
11889   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11890       node->children)
11891     {
11892       GtkTreePath *path;
11893       GtkTreeIter iter;
11894
11895       path = _gtk_tree_view_find_path (tree_view, tree, node);
11896       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11897
11898       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11899
11900       gtk_tree_path_free (path);
11901     }
11902
11903   if (node->children)
11904     _gtk_rbtree_traverse (node->children,
11905                           node->children->root,
11906                           G_PRE_ORDER,
11907                           gtk_tree_view_expand_all_emission_helper,
11908                           tree_view);
11909 }
11910
11911 /**
11912  * gtk_tree_view_expand_all:
11913  * @tree_view: A #GtkTreeView.
11914  *
11915  * Recursively expands all nodes in the @tree_view.
11916  **/
11917 void
11918 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11919 {
11920   GtkTreePath *path;
11921   GtkRBTree *tree;
11922   GtkRBNode *node;
11923
11924   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11925
11926   if (tree_view->priv->tree == NULL)
11927     return;
11928
11929   path = gtk_tree_path_new_first ();
11930   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11931
11932   while (node)
11933     {
11934       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11935       node = _gtk_rbtree_next (tree, node);
11936       gtk_tree_path_next (path);
11937   }
11938
11939   gtk_tree_path_free (path);
11940 }
11941
11942 /* Timeout to animate the expander during expands and collapses */
11943 static gboolean
11944 expand_collapse_timeout (gpointer data)
11945 {
11946   return do_expand_collapse (data);
11947 }
11948
11949 static void
11950 add_expand_collapse_timeout (GtkTreeView *tree_view,
11951                              GtkRBTree   *tree,
11952                              GtkRBNode   *node,
11953                              gboolean     expand)
11954 {
11955   if (tree_view->priv->expand_collapse_timeout != 0)
11956     return;
11957
11958   tree_view->priv->expand_collapse_timeout =
11959       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11960   tree_view->priv->expanded_collapsed_tree = tree;
11961   tree_view->priv->expanded_collapsed_node = node;
11962
11963   if (expand)
11964     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11965   else
11966     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11967 }
11968
11969 static void
11970 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11971 {
11972   if (tree_view->priv->expand_collapse_timeout)
11973     {
11974       g_source_remove (tree_view->priv->expand_collapse_timeout);
11975       tree_view->priv->expand_collapse_timeout = 0;
11976     }
11977
11978   if (tree_view->priv->expanded_collapsed_node != NULL)
11979     {
11980       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11981       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11982
11983       tree_view->priv->expanded_collapsed_node = NULL;
11984     }
11985 }
11986
11987 static void
11988 cancel_arrow_animation (GtkTreeView *tree_view)
11989 {
11990   if (tree_view->priv->expand_collapse_timeout)
11991     {
11992       while (do_expand_collapse (tree_view));
11993
11994       remove_expand_collapse_timeout (tree_view);
11995     }
11996 }
11997
11998 static gboolean
11999 do_expand_collapse (GtkTreeView *tree_view)
12000 {
12001   GtkRBNode *node;
12002   GtkRBTree *tree;
12003   gboolean expanding;
12004   gboolean redraw;
12005
12006   redraw = FALSE;
12007   expanding = TRUE;
12008
12009   node = tree_view->priv->expanded_collapsed_node;
12010   tree = tree_view->priv->expanded_collapsed_tree;
12011
12012   if (node->children == NULL)
12013     expanding = FALSE;
12014
12015   if (expanding)
12016     {
12017       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
12018         {
12019           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12020           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12021
12022           redraw = TRUE;
12023
12024         }
12025       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
12026         {
12027           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12028
12029           redraw = TRUE;
12030         }
12031     }
12032   else
12033     {
12034       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
12035         {
12036           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12037           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12038
12039           redraw = TRUE;
12040         }
12041       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
12042         {
12043           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12044
12045           redraw = TRUE;
12046
12047         }
12048     }
12049
12050   if (redraw)
12051     {
12052       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
12053
12054       return TRUE;
12055     }
12056
12057   return FALSE;
12058 }
12059
12060 /**
12061  * gtk_tree_view_collapse_all:
12062  * @tree_view: A #GtkTreeView.
12063  *
12064  * Recursively collapses all visible, expanded nodes in @tree_view.
12065  **/
12066 void
12067 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12068 {
12069   GtkRBTree *tree;
12070   GtkRBNode *node;
12071   GtkTreePath *path;
12072   gint *indices;
12073
12074   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12075
12076   if (tree_view->priv->tree == NULL)
12077     return;
12078
12079   path = gtk_tree_path_new ();
12080   gtk_tree_path_down (path);
12081   indices = gtk_tree_path_get_indices (path);
12082
12083   tree = tree_view->priv->tree;
12084   node = tree->root;
12085   while (node && node->left != tree->nil)
12086     node = node->left;
12087
12088   while (node)
12089     {
12090       if (node->children)
12091         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12092       indices[0]++;
12093       node = _gtk_rbtree_next (tree, node);
12094     }
12095
12096   gtk_tree_path_free (path);
12097 }
12098
12099 /**
12100  * gtk_tree_view_expand_to_path:
12101  * @tree_view: A #GtkTreeView.
12102  * @path: path to a row.
12103  *
12104  * Expands the row at @path. This will also expand all parent rows of
12105  * @path as necessary.
12106  *
12107  * Since: 2.2
12108  **/
12109 void
12110 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12111                               GtkTreePath *path)
12112 {
12113   gint i, depth;
12114   gint *indices;
12115   GtkTreePath *tmp;
12116
12117   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12118   g_return_if_fail (path != NULL);
12119
12120   depth = gtk_tree_path_get_depth (path);
12121   indices = gtk_tree_path_get_indices (path);
12122
12123   tmp = gtk_tree_path_new ();
12124   g_return_if_fail (tmp != NULL);
12125
12126   for (i = 0; i < depth; i++)
12127     {
12128       gtk_tree_path_append_index (tmp, indices[i]);
12129       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12130     }
12131
12132   gtk_tree_path_free (tmp);
12133 }
12134
12135 /* FIXME the bool return values for expand_row and collapse_row are
12136  * not analagous; they should be TRUE if the row had children and
12137  * was not already in the requested state.
12138  */
12139
12140
12141 static gboolean
12142 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12143                                GtkTreePath *path,
12144                                GtkRBTree   *tree,
12145                                GtkRBNode   *node,
12146                                gboolean     open_all,
12147                                gboolean     animate)
12148 {
12149   GtkTreeIter iter;
12150   GtkTreeIter temp;
12151   gboolean expand;
12152
12153   if (animate)
12154     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12155                   "gtk-enable-animations", &animate,
12156                   NULL);
12157
12158   remove_auto_expand_timeout (tree_view);
12159
12160   if (node->children && !open_all)
12161     return FALSE;
12162
12163   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12164     return FALSE;
12165
12166   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12167   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12168     return FALSE;
12169
12170
12171    if (node->children && open_all)
12172     {
12173       gboolean retval = FALSE;
12174       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12175
12176       gtk_tree_path_append_index (tmp_path, 0);
12177       tree = node->children;
12178       node = tree->root;
12179       while (node->left != tree->nil)
12180         node = node->left;
12181       /* try to expand the children */
12182       do
12183         {
12184          gboolean t;
12185          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12186                                             TRUE, animate);
12187          if (t)
12188            retval = TRUE;
12189
12190          gtk_tree_path_next (tmp_path);
12191          node = _gtk_rbtree_next (tree, node);
12192        }
12193       while (node != NULL);
12194
12195       gtk_tree_path_free (tmp_path);
12196
12197       return retval;
12198     }
12199
12200   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12201
12202   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12203     return FALSE;
12204
12205   if (expand)
12206     return FALSE;
12207
12208   node->children = _gtk_rbtree_new ();
12209   node->children->parent_tree = tree;
12210   node->children->parent_node = node;
12211
12212   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12213
12214   gtk_tree_view_build_tree (tree_view,
12215                             node->children,
12216                             &temp,
12217                             gtk_tree_path_get_depth (path) + 1,
12218                             open_all);
12219
12220   remove_expand_collapse_timeout (tree_view);
12221
12222   if (animate)
12223     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12224
12225   install_presize_handler (tree_view);
12226
12227   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12228   if (open_all && node->children)
12229     {
12230       _gtk_rbtree_traverse (node->children,
12231                             node->children->root,
12232                             G_PRE_ORDER,
12233                             gtk_tree_view_expand_all_emission_helper,
12234                             tree_view);
12235     }
12236   return TRUE;
12237 }
12238
12239
12240 /**
12241  * gtk_tree_view_expand_row:
12242  * @tree_view: a #GtkTreeView
12243  * @path: path to a row
12244  * @open_all: whether to recursively expand, or just expand immediate children
12245  *
12246  * Opens the row so its children are visible.
12247  *
12248  * Return value: %TRUE if the row existed and had children
12249  **/
12250 gboolean
12251 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12252                           GtkTreePath *path,
12253                           gboolean     open_all)
12254 {
12255   GtkRBTree *tree;
12256   GtkRBNode *node;
12257
12258   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12259   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12260   g_return_val_if_fail (path != NULL, FALSE);
12261
12262   if (_gtk_tree_view_find_node (tree_view,
12263                                 path,
12264                                 &tree,
12265                                 &node))
12266     return FALSE;
12267
12268   if (tree != NULL)
12269     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12270   else
12271     return FALSE;
12272 }
12273
12274 static gboolean
12275 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12276                                  GtkTreePath *path,
12277                                  GtkRBTree   *tree,
12278                                  GtkRBNode   *node,
12279                                  gboolean     animate)
12280 {
12281   GtkTreeIter iter;
12282   GtkTreeIter children;
12283   gboolean collapse;
12284   gint x, y;
12285   GList *list;
12286   GdkWindow *child, *parent;
12287
12288   if (animate)
12289     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12290                   "gtk-enable-animations", &animate,
12291                   NULL);
12292
12293   remove_auto_expand_timeout (tree_view);
12294
12295   if (node->children == NULL)
12296     return FALSE;
12297
12298   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12299
12300   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12301
12302   if (collapse)
12303     return FALSE;
12304
12305   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12306    * a chance to prelight the correct node below */
12307
12308   if (tree_view->priv->prelight_tree)
12309     {
12310       GtkRBTree *parent_tree;
12311       GtkRBNode *parent_node;
12312
12313       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12314       parent_node = tree_view->priv->prelight_tree->parent_node;
12315       while (parent_tree)
12316         {
12317           if (parent_tree == tree && parent_node == node)
12318             {
12319               ensure_unprelighted (tree_view);
12320               break;
12321             }
12322           parent_node = parent_tree->parent_node;
12323           parent_tree = parent_tree->parent_tree;
12324         }
12325     }
12326
12327   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12328
12329   for (list = tree_view->priv->columns; list; list = list->next)
12330     {
12331       GtkTreeViewColumn *column = list->data;
12332
12333       if (column->visible == FALSE)
12334         continue;
12335       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12336         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12337     }
12338
12339   if (tree_view->priv->destroy_count_func)
12340     {
12341       GtkTreePath *child_path;
12342       gint child_count = 0;
12343       child_path = gtk_tree_path_copy (path);
12344       gtk_tree_path_down (child_path);
12345       if (node->children)
12346         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12347       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12348       gtk_tree_path_free (child_path);
12349     }
12350
12351   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12352     {
12353       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12354
12355       if (gtk_tree_path_is_ancestor (path, cursor_path))
12356         {
12357           gtk_tree_row_reference_free (tree_view->priv->cursor);
12358           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12359                                                                       tree_view->priv->model,
12360                                                                       path);
12361         }
12362       gtk_tree_path_free (cursor_path);
12363     }
12364
12365   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12366     {
12367       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12368       if (gtk_tree_path_is_ancestor (path, anchor_path))
12369         {
12370           gtk_tree_row_reference_free (tree_view->priv->anchor);
12371           tree_view->priv->anchor = NULL;
12372         }
12373       gtk_tree_path_free (anchor_path);
12374     }
12375
12376   /* Stop a pending double click */
12377   tree_view->priv->last_button_x = -1;
12378   tree_view->priv->last_button_y = -1;
12379
12380   remove_expand_collapse_timeout (tree_view);
12381
12382   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12383     {
12384       _gtk_rbtree_remove (node->children);
12385       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12386     }
12387   else
12388     _gtk_rbtree_remove (node->children);
12389
12390   if (animate)
12391     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12392
12393   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12394     {
12395       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12396     }
12397
12398   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12399
12400   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12401     {
12402       /* now that we've collapsed all rows, we want to try to set the prelight
12403        * again. To do this, we fake a motion event and send it to ourselves. */
12404
12405       child = tree_view->priv->bin_window;
12406       parent = gdk_window_get_parent (child);
12407
12408       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12409         {
12410           GdkEventMotion event;
12411           gint child_x, child_y;
12412
12413           gdk_window_get_position (child, &child_x, &child_y);
12414
12415           event.window = tree_view->priv->bin_window;
12416           event.x = x - child_x;
12417           event.y = y - child_y;
12418
12419           /* despite the fact this isn't a real event, I'm almost positive it will
12420            * never trigger a drag event.  maybe_drag is the only function that uses
12421            * more than just event.x and event.y. */
12422           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12423         }
12424     }
12425
12426   return TRUE;
12427 }
12428
12429 /**
12430  * gtk_tree_view_collapse_row:
12431  * @tree_view: a #GtkTreeView
12432  * @path: path to a row in the @tree_view
12433  *
12434  * Collapses a row (hides its child rows, if they exist).
12435  *
12436  * Return value: %TRUE if the row was collapsed.
12437  **/
12438 gboolean
12439 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12440                             GtkTreePath *path)
12441 {
12442   GtkRBTree *tree;
12443   GtkRBNode *node;
12444
12445   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12446   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12447   g_return_val_if_fail (path != NULL, FALSE);
12448
12449   if (_gtk_tree_view_find_node (tree_view,
12450                                 path,
12451                                 &tree,
12452                                 &node))
12453     return FALSE;
12454
12455   if (tree == NULL || node->children == NULL)
12456     return FALSE;
12457
12458   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12459 }
12460
12461 static void
12462 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12463                                         GtkRBTree              *tree,
12464                                         GtkTreePath            *path,
12465                                         GtkTreeViewMappingFunc  func,
12466                                         gpointer                user_data)
12467 {
12468   GtkRBNode *node;
12469
12470   if (tree == NULL || tree->root == NULL)
12471     return;
12472
12473   node = tree->root;
12474
12475   while (node && node->left != tree->nil)
12476     node = node->left;
12477
12478   while (node)
12479     {
12480       if (node->children)
12481         {
12482           (* func) (tree_view, path, user_data);
12483           gtk_tree_path_down (path);
12484           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12485           gtk_tree_path_up (path);
12486         }
12487       gtk_tree_path_next (path);
12488       node = _gtk_rbtree_next (tree, node);
12489     }
12490 }
12491
12492 /**
12493  * gtk_tree_view_map_expanded_rows:
12494  * @tree_view: A #GtkTreeView
12495  * @func: (scope call): A function to be called
12496  * @data: User data to be passed to the function.
12497  *
12498  * Calls @func on all expanded rows.
12499  **/
12500 void
12501 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12502                                  GtkTreeViewMappingFunc  func,
12503                                  gpointer                user_data)
12504 {
12505   GtkTreePath *path;
12506
12507   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12508   g_return_if_fail (func != NULL);
12509
12510   path = gtk_tree_path_new_first ();
12511
12512   gtk_tree_view_map_expanded_rows_helper (tree_view,
12513                                           tree_view->priv->tree,
12514                                           path, func, user_data);
12515
12516   gtk_tree_path_free (path);
12517 }
12518
12519 /**
12520  * gtk_tree_view_row_expanded:
12521  * @tree_view: A #GtkTreeView.
12522  * @path: A #GtkTreePath to test expansion state.
12523  *
12524  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12525  *
12526  * Return value: %TRUE if #path is expanded.
12527  **/
12528 gboolean
12529 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12530                             GtkTreePath *path)
12531 {
12532   GtkRBTree *tree;
12533   GtkRBNode *node;
12534
12535   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12536   g_return_val_if_fail (path != NULL, FALSE);
12537
12538   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12539
12540   if (node == NULL)
12541     return FALSE;
12542
12543   return (node->children != NULL);
12544 }
12545
12546 /**
12547  * gtk_tree_view_get_reorderable:
12548  * @tree_view: a #GtkTreeView
12549  *
12550  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12551  * gtk_tree_view_set_reorderable().
12552  *
12553  * Return value: %TRUE if the tree can be reordered.
12554  **/
12555 gboolean
12556 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12557 {
12558   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12559
12560   return tree_view->priv->reorderable;
12561 }
12562
12563 /**
12564  * gtk_tree_view_set_reorderable:
12565  * @tree_view: A #GtkTreeView.
12566  * @reorderable: %TRUE, if the tree can be reordered.
12567  *
12568  * This function is a convenience function to allow you to reorder
12569  * models that support the #GtkDragSourceIface and the
12570  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12571  * these.  If @reorderable is %TRUE, then the user can reorder the
12572  * model by dragging and dropping rows. The developer can listen to
12573  * these changes by connecting to the model's row_inserted and
12574  * row_deleted signals. The reordering is implemented by setting up
12575  * the tree view as a drag source and destination. Therefore, drag and
12576  * drop can not be used in a reorderable view for any other purpose.
12577  *
12578  * This function does not give you any degree of control over the order -- any
12579  * reordering is allowed.  If more control is needed, you should probably
12580  * handle drag and drop manually.
12581  **/
12582 void
12583 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12584                                gboolean     reorderable)
12585 {
12586   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12587
12588   reorderable = reorderable != FALSE;
12589
12590   if (tree_view->priv->reorderable == reorderable)
12591     return;
12592
12593   if (reorderable)
12594     {
12595       const GtkTargetEntry row_targets[] = {
12596         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12597       };
12598
12599       gtk_tree_view_enable_model_drag_source (tree_view,
12600                                               GDK_BUTTON1_MASK,
12601                                               row_targets,
12602                                               G_N_ELEMENTS (row_targets),
12603                                               GDK_ACTION_MOVE);
12604       gtk_tree_view_enable_model_drag_dest (tree_view,
12605                                             row_targets,
12606                                             G_N_ELEMENTS (row_targets),
12607                                             GDK_ACTION_MOVE);
12608     }
12609   else
12610     {
12611       gtk_tree_view_unset_rows_drag_source (tree_view);
12612       gtk_tree_view_unset_rows_drag_dest (tree_view);
12613     }
12614
12615   tree_view->priv->reorderable = reorderable;
12616
12617   g_object_notify (G_OBJECT (tree_view), "reorderable");
12618 }
12619
12620 static void
12621 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12622                                GtkTreePath     *path,
12623                                gboolean         clear_and_select,
12624                                gboolean         clamp_node)
12625 {
12626   GtkRBTree *tree = NULL;
12627   GtkRBNode *node = NULL;
12628
12629   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12630     {
12631       GtkTreePath *cursor_path;
12632       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12633       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12634       gtk_tree_path_free (cursor_path);
12635     }
12636
12637   gtk_tree_row_reference_free (tree_view->priv->cursor);
12638   tree_view->priv->cursor = NULL;
12639
12640   /* One cannot set the cursor on a separator.   Also, if
12641    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12642    * before finding the tree and node belonging to path.  The
12643    * path maps to a non-existing path and we will silently bail out.
12644    * We unset tree and node to avoid further processing.
12645    */
12646   if (!row_is_separator (tree_view, NULL, path)
12647       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12648     {
12649       tree_view->priv->cursor =
12650           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12651                                             tree_view->priv->model,
12652                                             path);
12653     }
12654   else
12655     {
12656       tree = NULL;
12657       node = NULL;
12658     }
12659
12660   if (tree != NULL)
12661     {
12662       GtkRBTree *new_tree = NULL;
12663       GtkRBNode *new_node = NULL;
12664
12665       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12666         {
12667           GtkTreeSelectMode mode = 0;
12668
12669           if (tree_view->priv->ctrl_pressed)
12670             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12671           if (tree_view->priv->shift_pressed)
12672             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12673
12674           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12675                                                     node, tree, path, mode,
12676                                                     FALSE);
12677         }
12678
12679       /* We have to re-find tree and node here again, somebody might have
12680        * cleared the node or the whole tree in the GtkTreeSelection::changed
12681        * callback. If the nodes differ we bail out here.
12682        */
12683       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12684
12685       if (tree != new_tree || node != new_node)
12686         return;
12687
12688       if (clamp_node)
12689         {
12690           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12691           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12692         }
12693     }
12694
12695   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12696 }
12697
12698 /**
12699  * gtk_tree_view_get_cursor:
12700  * @tree_view: A #GtkTreeView
12701  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12702  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12703  *
12704  * Fills in @path and @focus_column with the current path and focus column.  If
12705  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12706  * currently has focus, then *@focus_column will be %NULL.
12707  *
12708  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12709  * you are done with it.
12710  **/
12711 void
12712 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12713                           GtkTreePath       **path,
12714                           GtkTreeViewColumn **focus_column)
12715 {
12716   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12717
12718   if (path)
12719     {
12720       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12721         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12722       else
12723         *path = NULL;
12724     }
12725
12726   if (focus_column)
12727     {
12728       *focus_column = tree_view->priv->focus_column;
12729     }
12730 }
12731
12732 /**
12733  * gtk_tree_view_set_cursor:
12734  * @tree_view: A #GtkTreeView
12735  * @path: A #GtkTreePath
12736  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12737  * @start_editing: %TRUE if the specified cell should start being edited.
12738  *
12739  * Sets the current keyboard focus to be at @path, and selects it.  This is
12740  * useful when you want to focus the user's attention on a particular row.  If
12741  * @focus_column is not %NULL, then focus is given to the column specified by
12742  * it. Additionally, if @focus_column is specified, and @start_editing is
12743  * %TRUE, then editing should be started in the specified cell.
12744  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12745  * in order to give keyboard focus to the widget.  Please note that editing
12746  * can only happen when the widget is realized.
12747  *
12748  * If @path is invalid for @model, the current cursor (if any) will be unset
12749  * and the function will return without failing.
12750  **/
12751 void
12752 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12753                           GtkTreePath       *path,
12754                           GtkTreeViewColumn *focus_column,
12755                           gboolean           start_editing)
12756 {
12757   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12758                                     NULL, start_editing);
12759 }
12760
12761 /**
12762  * gtk_tree_view_set_cursor_on_cell:
12763  * @tree_view: A #GtkTreeView
12764  * @path: A #GtkTreePath
12765  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12766  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12767  * @start_editing: %TRUE if the specified cell should start being edited.
12768  *
12769  * Sets the current keyboard focus to be at @path, and selects it.  This is
12770  * useful when you want to focus the user's attention on a particular row.  If
12771  * @focus_column is not %NULL, then focus is given to the column specified by
12772  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12773  * contains 2 or more editable or activatable cells, then focus is given to
12774  * the cell specified by @focus_cell. Additionally, if @focus_column is
12775  * specified, and @start_editing is %TRUE, then editing should be started in
12776  * the specified cell.  This function is often followed by
12777  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12778  * widget.  Please note that editing can only happen when the widget is
12779  * realized.
12780  *
12781  * If @path is invalid for @model, the current cursor (if any) will be unset
12782  * and the function will return without failing.
12783  *
12784  * Since: 2.2
12785  **/
12786 void
12787 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12788                                   GtkTreePath       *path,
12789                                   GtkTreeViewColumn *focus_column,
12790                                   GtkCellRenderer   *focus_cell,
12791                                   gboolean           start_editing)
12792 {
12793   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12794   g_return_if_fail (path != NULL);
12795   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12796
12797   if (!tree_view->priv->model)
12798     return;
12799
12800   if (focus_cell)
12801     {
12802       g_return_if_fail (focus_column);
12803       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12804     }
12805
12806   /* cancel the current editing, if it exists */
12807   if (tree_view->priv->edited_column &&
12808       tree_view->priv->edited_column->editable_widget)
12809     gtk_tree_view_stop_editing (tree_view, TRUE);
12810
12811   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12812
12813   if (focus_column && focus_column->visible)
12814     {
12815       GList *list;
12816       gboolean column_in_tree = FALSE;
12817
12818       for (list = tree_view->priv->columns; list; list = list->next)
12819         if (list->data == focus_column)
12820           {
12821             column_in_tree = TRUE;
12822             break;
12823           }
12824       g_return_if_fail (column_in_tree);
12825       tree_view->priv->focus_column = focus_column;
12826       if (focus_cell)
12827         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12828       if (start_editing)
12829         gtk_tree_view_start_editing (tree_view, path);
12830     }
12831 }
12832
12833 /**
12834  * gtk_tree_view_get_bin_window:
12835  * @tree_view: A #GtkTreeView
12836  *
12837  * Returns the window that @tree_view renders to.
12838  * This is used primarily to compare to <literal>event->window</literal>
12839  * to confirm that the event on @tree_view is on the right window.
12840  *
12841  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
12842  *     hasn't been realized yet
12843  **/
12844 GdkWindow *
12845 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12846 {
12847   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12848
12849   return tree_view->priv->bin_window;
12850 }
12851
12852 /**
12853  * gtk_tree_view_get_path_at_pos:
12854  * @tree_view: A #GtkTreeView.
12855  * @x: The x position to be identified (relative to bin_window).
12856  * @y: The y position to be identified (relative to bin_window).
12857  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12858  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12859  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12860  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12861  *
12862  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12863  * (please see gtk_tree_view_get_bin_window()).
12864  * That is, @x and @y are relative to an events coordinates. @x and @y must
12865  * come from an event on the @tree_view only where <literal>event->window ==
12866  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12867  * things like popup menus. If @path is non-%NULL, then it will be filled
12868  * with the #GtkTreePath at that point.  This path should be freed with
12869  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12870  * with the column at that point.  @cell_x and @cell_y return the coordinates
12871  * relative to the cell background (i.e. the @background_area passed to
12872  * gtk_cell_renderer_render()).  This function is only meaningful if
12873  * @tree_view is realized.  Therefore this function will always return %FALSE
12874  * if @tree_view is not realized or does not have a model.
12875  *
12876  * For converting widget coordinates (eg. the ones you get from
12877  * GtkWidget::query-tooltip), please see
12878  * gtk_tree_view_convert_widget_to_bin_window_coords().
12879  *
12880  * Return value: %TRUE if a row exists at that coordinate.
12881  **/
12882 gboolean
12883 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12884                                gint                x,
12885                                gint                y,
12886                                GtkTreePath       **path,
12887                                GtkTreeViewColumn **column,
12888                                gint               *cell_x,
12889                                gint               *cell_y)
12890 {
12891   GtkRBTree *tree;
12892   GtkRBNode *node;
12893   gint y_offset;
12894
12895   g_return_val_if_fail (tree_view != NULL, FALSE);
12896
12897   if (path)
12898     *path = NULL;
12899   if (column)
12900     *column = NULL;
12901
12902   if (tree_view->priv->bin_window == NULL)
12903     return FALSE;
12904
12905   if (tree_view->priv->tree == NULL)
12906     return FALSE;
12907
12908   if (x > tree_view->priv->hadjustment->upper)
12909     return FALSE;
12910
12911   if (x < 0 || y < 0)
12912     return FALSE;
12913
12914   if (column || cell_x)
12915     {
12916       GtkTreeViewColumn *tmp_column;
12917       GtkTreeViewColumn *last_column = NULL;
12918       GList *list;
12919       gint remaining_x = x;
12920       gboolean found = FALSE;
12921       gboolean rtl;
12922
12923       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12924       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12925            list;
12926            list = (rtl ? list->prev : list->next))
12927         {
12928           tmp_column = list->data;
12929
12930           if (tmp_column->visible == FALSE)
12931             continue;
12932
12933           last_column = tmp_column;
12934           if (remaining_x <= tmp_column->width)
12935             {
12936               found = TRUE;
12937
12938               if (column)
12939                 *column = tmp_column;
12940
12941               if (cell_x)
12942                 *cell_x = remaining_x;
12943
12944               break;
12945             }
12946           remaining_x -= tmp_column->width;
12947         }
12948
12949       /* If found is FALSE and there is a last_column, then it the remainder
12950        * space is in that area
12951        */
12952       if (!found)
12953         {
12954           if (last_column)
12955             {
12956               if (column)
12957                 *column = last_column;
12958
12959               if (cell_x)
12960                 *cell_x = last_column->width + remaining_x;
12961             }
12962           else
12963             {
12964               return FALSE;
12965             }
12966         }
12967     }
12968
12969   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12970                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12971                                       &tree, &node);
12972
12973   if (tree == NULL)
12974     return FALSE;
12975
12976   if (cell_y)
12977     *cell_y = y_offset;
12978
12979   if (path)
12980     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12981
12982   return TRUE;
12983 }
12984
12985
12986 /**
12987  * gtk_tree_view_get_cell_area:
12988  * @tree_view: a #GtkTreeView
12989  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12990  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12991  * @rect: rectangle to fill with cell rect
12992  *
12993  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12994  * row specified by @path and the column specified by @column.  If @path is
12995  * %NULL, or points to a path not currently displayed, the @y and @height fields
12996  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12997  * fields will be filled with 0.  The sum of all cell rects does not cover the
12998  * entire tree; there are extra pixels in between rows, for example. The
12999  * returned rectangle is equivalent to the @cell_area passed to
13000  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13001  * realized.
13002  **/
13003 void
13004 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13005                              GtkTreePath        *path,
13006                              GtkTreeViewColumn  *column,
13007                              GdkRectangle       *rect)
13008 {
13009   GtkAllocation allocation;
13010   GtkRBTree *tree = NULL;
13011   GtkRBNode *node = NULL;
13012   gint vertical_separator;
13013   gint horizontal_separator;
13014
13015   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13016   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13017   g_return_if_fail (rect != NULL);
13018   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
13019   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13020
13021   gtk_widget_style_get (GTK_WIDGET (tree_view),
13022                         "vertical-separator", &vertical_separator,
13023                         "horizontal-separator", &horizontal_separator,
13024                         NULL);
13025
13026   rect->x = 0;
13027   rect->y = 0;
13028   rect->width = 0;
13029   rect->height = 0;
13030
13031   if (column)
13032     {
13033       gtk_widget_get_allocation (column->button, &allocation);
13034       rect->x = allocation.x + horizontal_separator/2;
13035       rect->width = allocation.width - horizontal_separator;
13036     }
13037
13038   if (path)
13039     {
13040       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13041
13042       /* Get vertical coords */
13043       if ((!ret && tree == NULL) || ret)
13044         return;
13045
13046       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
13047       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
13048
13049       if (column &&
13050           gtk_tree_view_is_expander_column (tree_view, column))
13051         {
13052           gint depth = gtk_tree_path_get_depth (path);
13053           gboolean rtl;
13054
13055           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13056
13057           if (!rtl)
13058             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13059           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13060
13061           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
13062             {
13063               if (!rtl)
13064                 rect->x += depth * tree_view->priv->expander_size;
13065               rect->width -= depth * tree_view->priv->expander_size;
13066             }
13067
13068           rect->width = MAX (rect->width, 0);
13069         }
13070     }
13071 }
13072
13073 /**
13074  * gtk_tree_view_get_background_area:
13075  * @tree_view: a #GtkTreeView
13076  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13077  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13078  * @rect: rectangle to fill with cell background rect
13079  *
13080  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13081  * row specified by @path and the column specified by @column.  If @path is
13082  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13083  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13084  * fields will be filled with 0.  The returned rectangle is equivalent to the
13085  * @background_area passed to gtk_cell_renderer_render().  These background
13086  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13087  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13088  * itself, excluding surrounding borders and the tree expander area.
13089  *
13090  **/
13091 void
13092 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13093                                    GtkTreePath        *path,
13094                                    GtkTreeViewColumn  *column,
13095                                    GdkRectangle       *rect)
13096 {
13097   GtkRBTree *tree = NULL;
13098   GtkRBNode *node = NULL;
13099
13100   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13101   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13102   g_return_if_fail (rect != NULL);
13103
13104   rect->x = 0;
13105   rect->y = 0;
13106   rect->width = 0;
13107   rect->height = 0;
13108
13109   if (path)
13110     {
13111       /* Get vertical coords */
13112
13113       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13114           tree == NULL)
13115         return;
13116
13117       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13118
13119       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13120     }
13121
13122   if (column)
13123     {
13124       gint x2 = 0;
13125
13126       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13127       rect->width = x2 - rect->x;
13128     }
13129 }
13130
13131 /**
13132  * gtk_tree_view_get_visible_rect:
13133  * @tree_view: a #GtkTreeView
13134  * @visible_rect: rectangle to fill
13135  *
13136  * Fills @visible_rect with the currently-visible region of the
13137  * buffer, in tree coordinates. Convert to bin_window coordinates with
13138  * gtk_tree_view_convert_tree_to_bin_window_coords().
13139  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13140  * scrollable area of the tree.
13141  **/
13142 void
13143 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13144                                 GdkRectangle *visible_rect)
13145 {
13146   GtkAllocation allocation;
13147   GtkWidget *widget;
13148
13149   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13150
13151   widget = GTK_WIDGET (tree_view);
13152
13153   if (visible_rect)
13154     {
13155       gtk_widget_get_allocation (widget, &allocation);
13156       visible_rect->x = tree_view->priv->hadjustment->value;
13157       visible_rect->y = tree_view->priv->vadjustment->value;
13158       visible_rect->width = allocation.width;
13159       visible_rect->height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13160     }
13161 }
13162
13163 /**
13164  * gtk_tree_view_convert_widget_to_tree_coords:
13165  * @tree_view: a #GtkTreeView
13166  * @wx: X coordinate relative to the widget
13167  * @wy: Y coordinate relative to the widget
13168  * @tx: return location for tree X coordinate
13169  * @ty: return location for tree Y coordinate
13170  *
13171  * Converts widget coordinates to coordinates for the
13172  * tree (the full scrollable area of the tree).
13173  *
13174  * Since: 2.12
13175  **/
13176 void
13177 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13178                                              gint         wx,
13179                                              gint         wy,
13180                                              gint        *tx,
13181                                              gint        *ty)
13182 {
13183   gint x, y;
13184
13185   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13186
13187   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13188                                                      wx, wy,
13189                                                      &x, &y);
13190   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13191                                                    x, y,
13192                                                    tx, ty);
13193 }
13194
13195 /**
13196  * gtk_tree_view_convert_tree_to_widget_coords:
13197  * @tree_view: a #GtkTreeView
13198  * @tx: X coordinate relative to the tree
13199  * @ty: Y coordinate relative to the tree
13200  * @wx: return location for widget X coordinate
13201  * @wy: return location for widget Y coordinate
13202  *
13203  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13204  * to widget coordinates.
13205  *
13206  * Since: 2.12
13207  **/
13208 void
13209 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13210                                              gint         tx,
13211                                              gint         ty,
13212                                              gint        *wx,
13213                                              gint        *wy)
13214 {
13215   gint x, y;
13216
13217   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13218
13219   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13220                                                    tx, ty,
13221                                                    &x, &y);
13222   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13223                                                      x, y,
13224                                                      wx, wy);
13225 }
13226
13227 /**
13228  * gtk_tree_view_convert_widget_to_bin_window_coords:
13229  * @tree_view: a #GtkTreeView
13230  * @wx: X coordinate relative to the widget
13231  * @wy: Y coordinate relative to the widget
13232  * @bx: return location for bin_window X coordinate
13233  * @by: return location for bin_window Y coordinate
13234  *
13235  * Converts widget coordinates to coordinates for the bin_window
13236  * (see gtk_tree_view_get_bin_window()).
13237  *
13238  * Since: 2.12
13239  **/
13240 void
13241 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13242                                                    gint         wx,
13243                                                    gint         wy,
13244                                                    gint        *bx,
13245                                                    gint        *by)
13246 {
13247   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13248
13249   if (bx)
13250     *bx = wx + tree_view->priv->hadjustment->value;
13251   if (by)
13252     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13253 }
13254
13255 /**
13256  * gtk_tree_view_convert_bin_window_to_widget_coords:
13257  * @tree_view: a #GtkTreeView
13258  * @bx: bin_window X coordinate
13259  * @by: bin_window Y coordinate
13260  * @wx: return location for widget X coordinate
13261  * @wy: return location for widget Y coordinate
13262  *
13263  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13264  * to widget relative coordinates.
13265  *
13266  * Since: 2.12
13267  **/
13268 void
13269 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13270                                                    gint         bx,
13271                                                    gint         by,
13272                                                    gint        *wx,
13273                                                    gint        *wy)
13274 {
13275   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13276
13277   if (wx)
13278     *wx = bx - tree_view->priv->hadjustment->value;
13279   if (wy)
13280     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13281 }
13282
13283 /**
13284  * gtk_tree_view_convert_tree_to_bin_window_coords:
13285  * @tree_view: a #GtkTreeView
13286  * @tx: tree X coordinate
13287  * @ty: tree Y coordinate
13288  * @bx: return location for X coordinate relative to bin_window
13289  * @by: return location for Y coordinate relative to bin_window
13290  *
13291  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13292  * to bin_window coordinates.
13293  *
13294  * Since: 2.12
13295  **/
13296 void
13297 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13298                                                  gint         tx,
13299                                                  gint         ty,
13300                                                  gint        *bx,
13301                                                  gint        *by)
13302 {
13303   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13304
13305   if (bx)
13306     *bx = tx;
13307   if (by)
13308     *by = ty - tree_view->priv->dy;
13309 }
13310
13311 /**
13312  * gtk_tree_view_convert_bin_window_to_tree_coords:
13313  * @tree_view: a #GtkTreeView
13314  * @bx: X coordinate relative to bin_window
13315  * @by: Y coordinate relative to bin_window
13316  * @tx: return location for tree X coordinate
13317  * @ty: return location for tree Y coordinate
13318  *
13319  * Converts bin_window coordinates to coordinates for the
13320  * tree (the full scrollable area of the tree).
13321  *
13322  * Since: 2.12
13323  **/
13324 void
13325 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13326                                                  gint         bx,
13327                                                  gint         by,
13328                                                  gint        *tx,
13329                                                  gint        *ty)
13330 {
13331   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13332
13333   if (tx)
13334     *tx = bx;
13335   if (ty)
13336     *ty = by + tree_view->priv->dy;
13337 }
13338
13339
13340
13341 /**
13342  * gtk_tree_view_get_visible_range:
13343  * @tree_view: A #GtkTreeView
13344  * @start_path: (allow-none): Return location for start of region, or %NULL.
13345  * @end_path: (allow-none): Return location for end of region, or %NULL.
13346  *
13347  * Sets @start_path and @end_path to be the first and last visible path.
13348  * Note that there may be invisible paths in between.
13349  *
13350  * The paths should be freed with gtk_tree_path_free() after use.
13351  *
13352  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13353  *
13354  * Since: 2.8
13355  **/
13356 gboolean
13357 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13358                                  GtkTreePath **start_path,
13359                                  GtkTreePath **end_path)
13360 {
13361   GtkRBTree *tree;
13362   GtkRBNode *node;
13363   gboolean retval;
13364
13365   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13366
13367   if (!tree_view->priv->tree)
13368     return FALSE;
13369
13370   retval = TRUE;
13371
13372   if (start_path)
13373     {
13374       _gtk_rbtree_find_offset (tree_view->priv->tree,
13375                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13376                                &tree, &node);
13377       if (node)
13378         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13379       else
13380         retval = FALSE;
13381     }
13382
13383   if (end_path)
13384     {
13385       gint y;
13386
13387       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13388         y = tree_view->priv->height - 1;
13389       else
13390         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13391
13392       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13393       if (node)
13394         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13395       else
13396         retval = FALSE;
13397     }
13398
13399   return retval;
13400 }
13401
13402 static void
13403 unset_reorderable (GtkTreeView *tree_view)
13404 {
13405   if (tree_view->priv->reorderable)
13406     {
13407       tree_view->priv->reorderable = FALSE;
13408       g_object_notify (G_OBJECT (tree_view), "reorderable");
13409     }
13410 }
13411
13412 /**
13413  * gtk_tree_view_enable_model_drag_source:
13414  * @tree_view: a #GtkTreeView
13415  * @start_button_mask: Mask of allowed buttons to start drag
13416  * @targets: the table of targets that the drag will support
13417  * @n_targets: the number of items in @targets
13418  * @actions: the bitmask of possible actions for a drag from this
13419  *    widget
13420  *
13421  * Turns @tree_view into a drag source for automatic DND. Calling this
13422  * method sets #GtkTreeView:reorderable to %FALSE.
13423  **/
13424 void
13425 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13426                                         GdkModifierType           start_button_mask,
13427                                         const GtkTargetEntry     *targets,
13428                                         gint                      n_targets,
13429                                         GdkDragAction             actions)
13430 {
13431   TreeViewDragInfo *di;
13432
13433   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13434
13435   gtk_drag_source_set (GTK_WIDGET (tree_view),
13436                        0,
13437                        targets,
13438                        n_targets,
13439                        actions);
13440
13441   di = ensure_info (tree_view);
13442
13443   di->start_button_mask = start_button_mask;
13444   di->source_actions = actions;
13445   di->source_set = TRUE;
13446
13447   unset_reorderable (tree_view);
13448 }
13449
13450 /**
13451  * gtk_tree_view_enable_model_drag_dest:
13452  * @tree_view: a #GtkTreeView
13453  * @targets: the table of targets that the drag will support
13454  * @n_targets: the number of items in @targets
13455  * @actions: the bitmask of possible actions for a drag from this
13456  *    widget
13457  *
13458  * Turns @tree_view into a drop destination for automatic DND. Calling
13459  * this method sets #GtkTreeView:reorderable to %FALSE.
13460  **/
13461 void
13462 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13463                                       const GtkTargetEntry     *targets,
13464                                       gint                      n_targets,
13465                                       GdkDragAction             actions)
13466 {
13467   TreeViewDragInfo *di;
13468
13469   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13470
13471   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13472                      0,
13473                      targets,
13474                      n_targets,
13475                      actions);
13476
13477   di = ensure_info (tree_view);
13478   di->dest_set = TRUE;
13479
13480   unset_reorderable (tree_view);
13481 }
13482
13483 /**
13484  * gtk_tree_view_unset_rows_drag_source:
13485  * @tree_view: a #GtkTreeView
13486  *
13487  * Undoes the effect of
13488  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13489  * #GtkTreeView:reorderable to %FALSE.
13490  **/
13491 void
13492 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13493 {
13494   TreeViewDragInfo *di;
13495
13496   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13497
13498   di = get_info (tree_view);
13499
13500   if (di)
13501     {
13502       if (di->source_set)
13503         {
13504           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13505           di->source_set = FALSE;
13506         }
13507
13508       if (!di->dest_set && !di->source_set)
13509         remove_info (tree_view);
13510     }
13511
13512   unset_reorderable (tree_view);
13513 }
13514
13515 /**
13516  * gtk_tree_view_unset_rows_drag_dest:
13517  * @tree_view: a #GtkTreeView
13518  *
13519  * Undoes the effect of
13520  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13521  * #GtkTreeView:reorderable to %FALSE.
13522  **/
13523 void
13524 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13525 {
13526   TreeViewDragInfo *di;
13527
13528   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13529
13530   di = get_info (tree_view);
13531
13532   if (di)
13533     {
13534       if (di->dest_set)
13535         {
13536           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13537           di->dest_set = FALSE;
13538         }
13539
13540       if (!di->dest_set && !di->source_set)
13541         remove_info (tree_view);
13542     }
13543
13544   unset_reorderable (tree_view);
13545 }
13546
13547 /**
13548  * gtk_tree_view_set_drag_dest_row:
13549  * @tree_view: a #GtkTreeView
13550  * @path: (allow-none): The path of the row to highlight, or %NULL.
13551  * @pos: Specifies whether to drop before, after or into the row
13552  *
13553  * Sets the row that is highlighted for feedback.
13554  **/
13555 void
13556 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13557                                  GtkTreePath            *path,
13558                                  GtkTreeViewDropPosition pos)
13559 {
13560   GtkTreePath *current_dest;
13561
13562   /* Note; this function is exported to allow a custom DND
13563    * implementation, so it can't touch TreeViewDragInfo
13564    */
13565
13566   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13567
13568   current_dest = NULL;
13569
13570   if (tree_view->priv->drag_dest_row)
13571     {
13572       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13573       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13574     }
13575
13576   /* special case a drop on an empty model */
13577   tree_view->priv->empty_view_drop = 0;
13578
13579   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13580       && gtk_tree_path_get_depth (path) == 1
13581       && gtk_tree_path_get_indices (path)[0] == 0)
13582     {
13583       gint n_children;
13584
13585       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13586                                                    NULL);
13587
13588       if (!n_children)
13589         tree_view->priv->empty_view_drop = 1;
13590     }
13591
13592   tree_view->priv->drag_dest_pos = pos;
13593
13594   if (path)
13595     {
13596       tree_view->priv->drag_dest_row =
13597         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13598       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13599     }
13600   else
13601     tree_view->priv->drag_dest_row = NULL;
13602
13603   if (current_dest)
13604     {
13605       GtkRBTree *tree, *new_tree;
13606       GtkRBNode *node, *new_node;
13607
13608       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13609       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13610
13611       if (tree && node)
13612         {
13613           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13614           if (new_tree && new_node)
13615             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13616
13617           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13618           if (new_tree && new_node)
13619             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13620         }
13621       gtk_tree_path_free (current_dest);
13622     }
13623 }
13624
13625 /**
13626  * gtk_tree_view_get_drag_dest_row:
13627  * @tree_view: a #GtkTreeView
13628  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13629  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13630  *
13631  * Gets information about the row that is highlighted for feedback.
13632  **/
13633 void
13634 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13635                                  GtkTreePath             **path,
13636                                  GtkTreeViewDropPosition  *pos)
13637 {
13638   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13639
13640   if (path)
13641     {
13642       if (tree_view->priv->drag_dest_row)
13643         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13644       else
13645         {
13646           if (tree_view->priv->empty_view_drop)
13647             *path = gtk_tree_path_new_from_indices (0, -1);
13648           else
13649             *path = NULL;
13650         }
13651     }
13652
13653   if (pos)
13654     *pos = tree_view->priv->drag_dest_pos;
13655 }
13656
13657 /**
13658  * gtk_tree_view_get_dest_row_at_pos:
13659  * @tree_view: a #GtkTreeView
13660  * @drag_x: the position to determine the destination row for
13661  * @drag_y: the position to determine the destination row for
13662  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13663  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13664  *
13665  * Determines the destination row for a given position.  @drag_x and
13666  * @drag_y are expected to be in widget coordinates.  This function is only
13667  * meaningful if @tree_view is realized.  Therefore this function will always
13668  * return %FALSE if @tree_view is not realized or does not have a model.
13669  *
13670  * Return value: whether there is a row at the given position, %TRUE if this
13671  * is indeed the case.
13672  **/
13673 gboolean
13674 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13675                                    gint                     drag_x,
13676                                    gint                     drag_y,
13677                                    GtkTreePath            **path,
13678                                    GtkTreeViewDropPosition *pos)
13679 {
13680   gint cell_y;
13681   gint bin_x, bin_y;
13682   gdouble offset_into_row;
13683   gdouble third;
13684   GdkRectangle cell;
13685   GtkTreeViewColumn *column = NULL;
13686   GtkTreePath *tmp_path = NULL;
13687
13688   /* Note; this function is exported to allow a custom DND
13689    * implementation, so it can't touch TreeViewDragInfo
13690    */
13691
13692   g_return_val_if_fail (tree_view != NULL, FALSE);
13693   g_return_val_if_fail (drag_x >= 0, FALSE);
13694   g_return_val_if_fail (drag_y >= 0, FALSE);
13695
13696   if (path)
13697     *path = NULL;
13698
13699   if (tree_view->priv->bin_window == NULL)
13700     return FALSE;
13701
13702   if (tree_view->priv->tree == NULL)
13703     return FALSE;
13704
13705   /* If in the top third of a row, we drop before that row; if
13706    * in the bottom third, drop after that row; if in the middle,
13707    * and the row has children, drop into the row.
13708    */
13709   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13710                                                      &bin_x, &bin_y);
13711
13712   if (!gtk_tree_view_get_path_at_pos (tree_view,
13713                                       bin_x,
13714                                       bin_y,
13715                                       &tmp_path,
13716                                       &column,
13717                                       NULL,
13718                                       &cell_y))
13719     return FALSE;
13720
13721   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13722                                      &cell);
13723
13724   offset_into_row = cell_y;
13725
13726   if (path)
13727     *path = tmp_path;
13728   else
13729     gtk_tree_path_free (tmp_path);
13730
13731   tmp_path = NULL;
13732
13733   third = cell.height / 3.0;
13734
13735   if (pos)
13736     {
13737       if (offset_into_row < third)
13738         {
13739           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13740         }
13741       else if (offset_into_row < (cell.height / 2.0))
13742         {
13743           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13744         }
13745       else if (offset_into_row < third * 2.0)
13746         {
13747           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13748         }
13749       else
13750         {
13751           *pos = GTK_TREE_VIEW_DROP_AFTER;
13752         }
13753     }
13754
13755   return TRUE;
13756 }
13757
13758
13759
13760 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13761 /**
13762  * gtk_tree_view_create_row_drag_icon:
13763  * @tree_view: a #GtkTreeView
13764  * @path: a #GtkTreePath in @tree_view
13765  *
13766  * Creates a #GdkPixmap representation of the row at @path.
13767  * This image is used for a drag icon.
13768  *
13769  * Return value: (transfer full): a newly-allocated pixmap of the drag icon.
13770  **/
13771 GdkPixmap *
13772 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13773                                     GtkTreePath  *path)
13774 {
13775   GtkTreeIter   iter;
13776   GtkRBTree    *tree;
13777   GtkRBNode    *node;
13778   GtkStyle *style;
13779   gint cell_offset;
13780   GList *list;
13781   GdkRectangle background_area;
13782   GdkRectangle expose_area;
13783   GtkWidget *widget;
13784   gint depth;
13785   /* start drawing inside the black outline */
13786   gint x = 1, y = 1;
13787   GdkDrawable *drawable;
13788   gint bin_window_width;
13789   gboolean is_separator = FALSE;
13790   gboolean rtl;
13791   cairo_t *cr;
13792
13793   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13794   g_return_val_if_fail (path != NULL, NULL);
13795
13796   widget = GTK_WIDGET (tree_view);
13797
13798   if (!gtk_widget_get_realized (widget))
13799     return NULL;
13800
13801   depth = gtk_tree_path_get_depth (path);
13802
13803   _gtk_tree_view_find_node (tree_view,
13804                             path,
13805                             &tree,
13806                             &node);
13807
13808   if (tree == NULL)
13809     return NULL;
13810
13811   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13812                                 &iter,
13813                                 path))
13814     return NULL;
13815
13816   style = gtk_widget_get_style (widget);
13817
13818   is_separator = row_is_separator (tree_view, &iter, NULL);
13819
13820   cell_offset = x;
13821
13822   background_area.y = y;
13823   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13824
13825   gdk_drawable_get_size (tree_view->priv->bin_window,
13826                          &bin_window_width, NULL);
13827
13828   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13829                              bin_window_width + 2,
13830                              background_area.height + 2,
13831                              -1);
13832
13833   expose_area.x = 0;
13834   expose_area.y = 0;
13835   expose_area.width = bin_window_width + 2;
13836   expose_area.height = background_area.height + 2;
13837
13838   cr = gdk_cairo_create (drawable);
13839   gdk_cairo_set_source_color (cr, &style->base [gtk_widget_get_state (widget)]);
13840   cairo_paint (cr);
13841
13842   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13843
13844   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13845       list;
13846       list = (rtl ? list->prev : list->next))
13847     {
13848       GtkTreeViewColumn *column = list->data;
13849       GdkRectangle cell_area;
13850       gint vertical_separator;
13851
13852       if (!column->visible)
13853         continue;
13854
13855       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13856                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13857                                                node->children?TRUE:FALSE);
13858
13859       background_area.x = cell_offset;
13860       background_area.width = column->width;
13861
13862       gtk_widget_style_get (widget,
13863                             "vertical-separator", &vertical_separator,
13864                             NULL);
13865
13866       cell_area = background_area;
13867
13868       cell_area.y += vertical_separator / 2;
13869       cell_area.height -= vertical_separator;
13870
13871       if (gtk_tree_view_is_expander_column (tree_view, column))
13872         {
13873           if (!rtl)
13874             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13875           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13876
13877           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13878             {
13879               if (!rtl)
13880                 cell_area.x += depth * tree_view->priv->expander_size;
13881               cell_area.width -= depth * tree_view->priv->expander_size;
13882             }
13883         }
13884
13885       if (gtk_tree_view_column_cell_is_visible (column))
13886         {
13887           if (is_separator)
13888             gtk_paint_hline (style,
13889                              drawable,
13890                              GTK_STATE_NORMAL,
13891                              &cell_area,
13892                              widget,
13893                              NULL,
13894                              cell_area.x,
13895                              cell_area.x + cell_area.width,
13896                              cell_area.y + cell_area.height / 2);
13897           else
13898             _gtk_tree_view_column_cell_render (column,
13899                                                drawable,
13900                                                &background_area,
13901                                                &cell_area,
13902                                                &expose_area,
13903                                                0);
13904         }
13905       cell_offset += column->width;
13906     }
13907
13908   cairo_set_source_rgb (cr, 0, 0, 0);
13909   cairo_rectangle (cr,
13910                    0.5, 0.5,
13911                    bin_window_width + 1,
13912                    background_area.height + 1);
13913   cairo_set_line_width (cr, 1.0);
13914   cairo_stroke (cr);
13915
13916   cairo_destroy (cr);
13917
13918   return drawable;
13919 }
13920
13921
13922 /**
13923  * gtk_tree_view_set_destroy_count_func:
13924  * @tree_view: A #GtkTreeView
13925  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13926  * @data: (allow-none): User data to be passed to @func, or %NULL
13927  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13928  *
13929  * This function should almost never be used.  It is meant for private use by
13930  * ATK for determining the number of visible children that are removed when the
13931  * user collapses a row, or a row is deleted.
13932  **/
13933 void
13934 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13935                                       GtkTreeDestroyCountFunc  func,
13936                                       gpointer                 data,
13937                                       GDestroyNotify           destroy)
13938 {
13939   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13940
13941   if (tree_view->priv->destroy_count_destroy)
13942     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13943
13944   tree_view->priv->destroy_count_func = func;
13945   tree_view->priv->destroy_count_data = data;
13946   tree_view->priv->destroy_count_destroy = destroy;
13947 }
13948
13949
13950 /*
13951  * Interactive search
13952  */
13953
13954 /**
13955  * gtk_tree_view_set_enable_search:
13956  * @tree_view: A #GtkTreeView
13957  * @enable_search: %TRUE, if the user can search interactively
13958  *
13959  * If @enable_search is set, then the user can type in text to search through
13960  * the tree interactively (this is sometimes called "typeahead find").
13961  *
13962  * Note that even if this is %FALSE, the user can still initiate a search
13963  * using the "start-interactive-search" key binding.
13964  */
13965 void
13966 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13967                                  gboolean     enable_search)
13968 {
13969   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13970
13971   enable_search = !!enable_search;
13972
13973   if (tree_view->priv->enable_search != enable_search)
13974     {
13975        tree_view->priv->enable_search = enable_search;
13976        g_object_notify (G_OBJECT (tree_view), "enable-search");
13977     }
13978 }
13979
13980 /**
13981  * gtk_tree_view_get_enable_search:
13982  * @tree_view: A #GtkTreeView
13983  *
13984  * Returns whether or not the tree allows to start interactive searching
13985  * by typing in text.
13986  *
13987  * Return value: whether or not to let the user search interactively
13988  */
13989 gboolean
13990 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13991 {
13992   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13993
13994   return tree_view->priv->enable_search;
13995 }
13996
13997
13998 /**
13999  * gtk_tree_view_get_search_column:
14000  * @tree_view: A #GtkTreeView
14001  *
14002  * Gets the column searched on by the interactive search code.
14003  *
14004  * Return value: the column the interactive search code searches in.
14005  */
14006 gint
14007 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14008 {
14009   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14010
14011   return (tree_view->priv->search_column);
14012 }
14013
14014 /**
14015  * gtk_tree_view_set_search_column:
14016  * @tree_view: A #GtkTreeView
14017  * @column: the column of the model to search in, or -1 to disable searching
14018  *
14019  * Sets @column as the column where the interactive search code should
14020  * search in for the current model.
14021  *
14022  * If the search column is set, users can use the "start-interactive-search"
14023  * key binding to bring up search popup. The enable-search property controls
14024  * whether simply typing text will also start an interactive search.
14025  *
14026  * Note that @column refers to a column of the current model. The search
14027  * column is reset to -1 when the model is changed.
14028  */
14029 void
14030 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14031                                  gint         column)
14032 {
14033   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14034   g_return_if_fail (column >= -1);
14035
14036   if (tree_view->priv->search_column == column)
14037     return;
14038
14039   tree_view->priv->search_column = column;
14040   g_object_notify (G_OBJECT (tree_view), "search-column");
14041 }
14042
14043 /**
14044  * gtk_tree_view_get_search_equal_func:
14045  * @tree_view: A #GtkTreeView
14046  *
14047  * Returns the compare function currently in use.
14048  *
14049  * Return value: the currently used compare function for the search code.
14050  */
14051
14052 GtkTreeViewSearchEqualFunc
14053 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14054 {
14055   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14056
14057   return tree_view->priv->search_equal_func;
14058 }
14059
14060 /**
14061  * gtk_tree_view_set_search_equal_func:
14062  * @tree_view: A #GtkTreeView
14063  * @search_equal_func: the compare function to use during the search
14064  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14065  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14066  *
14067  * Sets the compare function for the interactive search capabilities; note
14068  * that somewhat like strcmp() returning 0 for equality
14069  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14070  **/
14071 void
14072 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14073                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14074                                      gpointer                    search_user_data,
14075                                      GDestroyNotify              search_destroy)
14076 {
14077   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14078   g_return_if_fail (search_equal_func != NULL);
14079
14080   if (tree_view->priv->search_destroy)
14081     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14082
14083   tree_view->priv->search_equal_func = search_equal_func;
14084   tree_view->priv->search_user_data = search_user_data;
14085   tree_view->priv->search_destroy = search_destroy;
14086   if (tree_view->priv->search_equal_func == NULL)
14087     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14088 }
14089
14090 /**
14091  * gtk_tree_view_get_search_entry:
14092  * @tree_view: A #GtkTreeView
14093  *
14094  * Returns the #GtkEntry which is currently in use as interactive search
14095  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14096  * will be returned.
14097  *
14098  * Return value: (transfer none): the entry currently in use as search entry.
14099  *
14100  * Since: 2.10
14101  */
14102 GtkEntry *
14103 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14104 {
14105   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14106
14107   if (tree_view->priv->search_custom_entry_set)
14108     return GTK_ENTRY (tree_view->priv->search_entry);
14109
14110   return NULL;
14111 }
14112
14113 /**
14114  * gtk_tree_view_set_search_entry:
14115  * @tree_view: A #GtkTreeView
14116  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14117  *
14118  * Sets the entry which the interactive search code will use for this
14119  * @tree_view.  This is useful when you want to provide a search entry
14120  * in our interface at all time at a fixed position.  Passing %NULL for
14121  * @entry will make the interactive search code use the built-in popup
14122  * entry again.
14123  *
14124  * Since: 2.10
14125  */
14126 void
14127 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14128                                 GtkEntry    *entry)
14129 {
14130   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14131   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14132
14133   if (tree_view->priv->search_custom_entry_set)
14134     {
14135       if (tree_view->priv->search_entry_changed_id)
14136         {
14137           g_signal_handler_disconnect (tree_view->priv->search_entry,
14138                                        tree_view->priv->search_entry_changed_id);
14139           tree_view->priv->search_entry_changed_id = 0;
14140         }
14141       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14142                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14143                                             tree_view);
14144
14145       g_object_unref (tree_view->priv->search_entry);
14146     }
14147   else if (tree_view->priv->search_window)
14148     {
14149       gtk_widget_destroy (tree_view->priv->search_window);
14150
14151       tree_view->priv->search_window = NULL;
14152     }
14153
14154   if (entry)
14155     {
14156       tree_view->priv->search_entry = g_object_ref (entry);
14157       tree_view->priv->search_custom_entry_set = TRUE;
14158
14159       if (tree_view->priv->search_entry_changed_id == 0)
14160         {
14161           tree_view->priv->search_entry_changed_id =
14162             g_signal_connect (tree_view->priv->search_entry, "changed",
14163                               G_CALLBACK (gtk_tree_view_search_init),
14164                               tree_view);
14165         }
14166
14167         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14168                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14169                           tree_view);
14170
14171         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14172     }
14173   else
14174     {
14175       tree_view->priv->search_entry = NULL;
14176       tree_view->priv->search_custom_entry_set = FALSE;
14177     }
14178 }
14179
14180 /**
14181  * gtk_tree_view_set_search_position_func:
14182  * @tree_view: A #GtkTreeView
14183  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14184  *    to use the default search position function
14185  * @data: (allow-none): user data to pass to @func, or %NULL
14186  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14187  *
14188  * Sets the function to use when positioning the search dialog.
14189  *
14190  * Since: 2.10
14191  **/
14192 void
14193 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14194                                         GtkTreeViewSearchPositionFunc  func,
14195                                         gpointer                       user_data,
14196                                         GDestroyNotify                 destroy)
14197 {
14198   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14199
14200   if (tree_view->priv->search_position_destroy)
14201     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14202
14203   tree_view->priv->search_position_func = func;
14204   tree_view->priv->search_position_user_data = user_data;
14205   tree_view->priv->search_position_destroy = destroy;
14206   if (tree_view->priv->search_position_func == NULL)
14207     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14208 }
14209
14210 /**
14211  * gtk_tree_view_get_search_position_func:
14212  * @tree_view: A #GtkTreeView
14213  *
14214  * Returns the positioning function currently in use.
14215  *
14216  * Return value: the currently used function for positioning the search dialog.
14217  *
14218  * Since: 2.10
14219  */
14220 GtkTreeViewSearchPositionFunc
14221 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14222 {
14223   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14224
14225   return tree_view->priv->search_position_func;
14226 }
14227
14228
14229 static void
14230 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14231                                   GtkTreeView *tree_view,
14232                                   GdkDevice   *device)
14233 {
14234   if (tree_view->priv->disable_popdown)
14235     return;
14236
14237   if (tree_view->priv->search_entry_changed_id)
14238     {
14239       g_signal_handler_disconnect (tree_view->priv->search_entry,
14240                                    tree_view->priv->search_entry_changed_id);
14241       tree_view->priv->search_entry_changed_id = 0;
14242     }
14243   if (tree_view->priv->typeselect_flush_timeout)
14244     {
14245       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14246       tree_view->priv->typeselect_flush_timeout = 0;
14247     }
14248
14249   if (gtk_widget_get_visible (search_dialog))
14250     {
14251       /* send focus-in event */
14252       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14253       gtk_widget_hide (search_dialog);
14254       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14255       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14256     }
14257 }
14258
14259 static void
14260 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14261                                     GtkWidget   *search_dialog,
14262                                     gpointer     user_data)
14263 {
14264   gint x, y;
14265   gint tree_x, tree_y;
14266   gint tree_width, tree_height;
14267   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14268   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14269   GtkRequisition requisition;
14270   gint monitor_num;
14271   GdkRectangle monitor;
14272
14273   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14274   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14275
14276   gtk_widget_realize (search_dialog);
14277
14278   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14279   gdk_drawable_get_size (tree_window,
14280                          &tree_width,
14281                          &tree_height);
14282   gtk_size_request_get_size (GTK_SIZE_REQUEST (search_dialog),
14283                              &requisition, NULL);
14284
14285   if (tree_x + tree_width > gdk_screen_get_width (screen))
14286     x = gdk_screen_get_width (screen) - requisition.width;
14287   else if (tree_x + tree_width - requisition.width < 0)
14288     x = 0;
14289   else
14290     x = tree_x + tree_width - requisition.width;
14291
14292   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14293     y = gdk_screen_get_height (screen) - requisition.height;
14294   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14295     y = 0;
14296   else
14297     y = tree_y + tree_height;
14298
14299   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14300 }
14301
14302 static void
14303 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14304                                       GtkMenu  *menu,
14305                                       gpointer  data)
14306 {
14307   GtkTreeView *tree_view = (GtkTreeView *)data;
14308
14309   tree_view->priv->disable_popdown = 1;
14310   g_signal_connect (menu, "hide",
14311                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14312 }
14313
14314 /* Because we're visible but offscreen, we just set a flag in the preedit
14315  * callback.
14316  */
14317 static void
14318 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14319                                       GtkTreeView  *tree_view)
14320 {
14321   tree_view->priv->imcontext_changed = 1;
14322   if (tree_view->priv->typeselect_flush_timeout)
14323     {
14324       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14325       tree_view->priv->typeselect_flush_timeout =
14326         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14327                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14328                        tree_view);
14329     }
14330
14331 }
14332
14333 static void
14334 gtk_tree_view_search_activate (GtkEntry    *entry,
14335                                GtkTreeView *tree_view)
14336 {
14337   GtkTreePath *path;
14338   GtkRBNode *node;
14339   GtkRBTree *tree;
14340
14341   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14342                                     tree_view,
14343                                     gtk_get_current_event_device ());
14344
14345   /* If we have a row selected and it's the cursor row, we activate
14346    * the row XXX */
14347   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14348     {
14349       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14350
14351       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14352
14353       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14354         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14355
14356       gtk_tree_path_free (path);
14357     }
14358 }
14359
14360 static gboolean
14361 gtk_tree_view_real_search_enable_popdown (gpointer data)
14362 {
14363   GtkTreeView *tree_view = (GtkTreeView *)data;
14364
14365   tree_view->priv->disable_popdown = 0;
14366
14367   return FALSE;
14368 }
14369
14370 static void
14371 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14372                                      gpointer   data)
14373 {
14374   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14375 }
14376
14377 static gboolean
14378 gtk_tree_view_search_delete_event (GtkWidget *widget,
14379                                    GdkEventAny *event,
14380                                    GtkTreeView *tree_view)
14381 {
14382   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14383
14384   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14385
14386   return TRUE;
14387 }
14388
14389 static gboolean
14390 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14391                                          GdkEventButton *event,
14392                                          GtkTreeView *tree_view)
14393 {
14394   GdkDevice *keyb_device;
14395
14396   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14397
14398   keyb_device = gdk_device_get_associated_device (event->device);
14399   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14400
14401   if (event->window == tree_view->priv->bin_window)
14402     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14403
14404   return TRUE;
14405 }
14406
14407 static gboolean
14408 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14409                                    GdkEventScroll *event,
14410                                    GtkTreeView *tree_view)
14411 {
14412   gboolean retval = FALSE;
14413
14414   if (event->direction == GDK_SCROLL_UP)
14415     {
14416       gtk_tree_view_search_move (widget, tree_view, TRUE);
14417       retval = TRUE;
14418     }
14419   else if (event->direction == GDK_SCROLL_DOWN)
14420     {
14421       gtk_tree_view_search_move (widget, tree_view, FALSE);
14422       retval = TRUE;
14423     }
14424
14425   /* renew the flush timeout */
14426   if (retval && tree_view->priv->typeselect_flush_timeout
14427       && !tree_view->priv->search_custom_entry_set)
14428     {
14429       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14430       tree_view->priv->typeselect_flush_timeout =
14431         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14432                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14433                        tree_view);
14434     }
14435
14436   return retval;
14437 }
14438
14439 static gboolean
14440 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14441                                       GdkEventKey *event,
14442                                       GtkTreeView *tree_view)
14443 {
14444   gboolean retval = FALSE;
14445
14446   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14447   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14448
14449   /* close window and cancel the search */
14450   if (!tree_view->priv->search_custom_entry_set
14451       && (event->keyval == GDK_KEY_Escape ||
14452           event->keyval == GDK_KEY_Tab ||
14453             event->keyval == GDK_KEY_KP_Tab ||
14454             event->keyval == GDK_KEY_ISO_Left_Tab))
14455     {
14456       gtk_tree_view_search_dialog_hide (widget, tree_view,
14457                                         gdk_event_get_device ((GdkEvent *) event));
14458       return TRUE;
14459     }
14460
14461   /* select previous matching iter */
14462   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
14463     {
14464       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14465         gtk_widget_error_bell (widget);
14466
14467       retval = TRUE;
14468     }
14469
14470   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14471       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14472     {
14473       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14474         gtk_widget_error_bell (widget);
14475
14476       retval = TRUE;
14477     }
14478
14479   /* select next matching iter */
14480   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
14481     {
14482       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14483         gtk_widget_error_bell (widget);
14484
14485       retval = TRUE;
14486     }
14487
14488   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14489       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14490     {
14491       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14492         gtk_widget_error_bell (widget);
14493
14494       retval = TRUE;
14495     }
14496
14497   /* renew the flush timeout */
14498   if (retval && tree_view->priv->typeselect_flush_timeout
14499       && !tree_view->priv->search_custom_entry_set)
14500     {
14501       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14502       tree_view->priv->typeselect_flush_timeout =
14503         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14504                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14505                        tree_view);
14506     }
14507
14508   return retval;
14509 }
14510
14511 /*  this function returns FALSE if there is a search string but
14512  *  nothing was found, and TRUE otherwise.
14513  */
14514 static gboolean
14515 gtk_tree_view_search_move (GtkWidget   *window,
14516                            GtkTreeView *tree_view,
14517                            gboolean     up)
14518 {
14519   gboolean ret;
14520   gint len;
14521   gint count = 0;
14522   const gchar *text;
14523   GtkTreeIter iter;
14524   GtkTreeModel *model;
14525   GtkTreeSelection *selection;
14526
14527   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14528
14529   g_return_val_if_fail (text != NULL, FALSE);
14530
14531   len = strlen (text);
14532
14533   if (up && tree_view->priv->selected_iter == 1)
14534     return strlen (text) < 1;
14535
14536   len = strlen (text);
14537
14538   if (len < 1)
14539     return TRUE;
14540
14541   model = gtk_tree_view_get_model (tree_view);
14542   selection = gtk_tree_view_get_selection (tree_view);
14543
14544   /* search */
14545   gtk_tree_selection_unselect_all (selection);
14546   if (!gtk_tree_model_get_iter_first (model, &iter))
14547     return TRUE;
14548
14549   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14550                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14551
14552   if (ret)
14553     {
14554       /* found */
14555       tree_view->priv->selected_iter += up?(-1):(1);
14556       return TRUE;
14557     }
14558   else
14559     {
14560       /* return to old iter */
14561       count = 0;
14562       gtk_tree_model_get_iter_first (model, &iter);
14563       gtk_tree_view_search_iter (model, selection,
14564                                  &iter, text,
14565                                  &count, tree_view->priv->selected_iter);
14566       return FALSE;
14567     }
14568 }
14569
14570 static gboolean
14571 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14572                                  gint          column,
14573                                  const gchar  *key,
14574                                  GtkTreeIter  *iter,
14575                                  gpointer      search_data)
14576 {
14577   gboolean retval = TRUE;
14578   const gchar *str;
14579   gchar *normalized_string;
14580   gchar *normalized_key;
14581   gchar *case_normalized_string = NULL;
14582   gchar *case_normalized_key = NULL;
14583   GValue value = {0,};
14584   GValue transformed = {0,};
14585
14586   gtk_tree_model_get_value (model, iter, column, &value);
14587
14588   g_value_init (&transformed, G_TYPE_STRING);
14589
14590   if (!g_value_transform (&value, &transformed))
14591     {
14592       g_value_unset (&value);
14593       return TRUE;
14594     }
14595
14596   g_value_unset (&value);
14597
14598   str = g_value_get_string (&transformed);
14599   if (!str)
14600     {
14601       g_value_unset (&transformed);
14602       return TRUE;
14603     }
14604
14605   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14606   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14607
14608   if (normalized_string && normalized_key)
14609     {
14610       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14611       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14612
14613       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14614         retval = FALSE;
14615     }
14616
14617   g_value_unset (&transformed);
14618   g_free (normalized_key);
14619   g_free (normalized_string);
14620   g_free (case_normalized_key);
14621   g_free (case_normalized_string);
14622
14623   return retval;
14624 }
14625
14626 static gboolean
14627 gtk_tree_view_search_iter (GtkTreeModel     *model,
14628                            GtkTreeSelection *selection,
14629                            GtkTreeIter      *iter,
14630                            const gchar      *text,
14631                            gint             *count,
14632                            gint              n)
14633 {
14634   GtkRBTree *tree = NULL;
14635   GtkRBNode *node = NULL;
14636   GtkTreePath *path;
14637
14638   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14639
14640   path = gtk_tree_model_get_path (model, iter);
14641   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14642
14643   do
14644     {
14645       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14646         {
14647           (*count)++;
14648           if (*count == n)
14649             {
14650               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14651                                             TRUE, 0.5, 0.0);
14652               gtk_tree_selection_select_iter (selection, iter);
14653               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14654
14655               if (path)
14656                 gtk_tree_path_free (path);
14657
14658               return TRUE;
14659             }
14660         }
14661
14662       if (node->children)
14663         {
14664           gboolean has_child;
14665           GtkTreeIter tmp;
14666
14667           tree = node->children;
14668           node = tree->root;
14669
14670           while (node->left != tree->nil)
14671             node = node->left;
14672
14673           tmp = *iter;
14674           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14675           gtk_tree_path_down (path);
14676
14677           /* sanity check */
14678           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14679         }
14680       else
14681         {
14682           gboolean done = FALSE;
14683
14684           do
14685             {
14686               node = _gtk_rbtree_next (tree, node);
14687
14688               if (node)
14689                 {
14690                   gboolean has_next;
14691
14692                   has_next = gtk_tree_model_iter_next (model, iter);
14693
14694                   done = TRUE;
14695                   gtk_tree_path_next (path);
14696
14697                   /* sanity check */
14698                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14699                 }
14700               else
14701                 {
14702                   gboolean has_parent;
14703                   GtkTreeIter tmp_iter = *iter;
14704
14705                   node = tree->parent_node;
14706                   tree = tree->parent_tree;
14707
14708                   if (!tree)
14709                     {
14710                       if (path)
14711                         gtk_tree_path_free (path);
14712
14713                       /* we've run out of tree, done with this func */
14714                       return FALSE;
14715                     }
14716
14717                   has_parent = gtk_tree_model_iter_parent (model,
14718                                                            iter,
14719                                                            &tmp_iter);
14720                   gtk_tree_path_up (path);
14721
14722                   /* sanity check */
14723                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14724                 }
14725             }
14726           while (!done);
14727         }
14728     }
14729   while (1);
14730
14731   return FALSE;
14732 }
14733
14734 static void
14735 gtk_tree_view_search_init (GtkWidget   *entry,
14736                            GtkTreeView *tree_view)
14737 {
14738   gint ret;
14739   gint count = 0;
14740   const gchar *text;
14741   GtkTreeIter iter;
14742   GtkTreeModel *model;
14743   GtkTreeSelection *selection;
14744
14745   g_return_if_fail (GTK_IS_ENTRY (entry));
14746   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14747
14748   text = gtk_entry_get_text (GTK_ENTRY (entry));
14749
14750   model = gtk_tree_view_get_model (tree_view);
14751   selection = gtk_tree_view_get_selection (tree_view);
14752
14753   /* search */
14754   gtk_tree_selection_unselect_all (selection);
14755   if (tree_view->priv->typeselect_flush_timeout
14756       && !tree_view->priv->search_custom_entry_set)
14757     {
14758       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14759       tree_view->priv->typeselect_flush_timeout =
14760         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14761                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14762                        tree_view);
14763     }
14764
14765   if (*text == '\0')
14766     return;
14767
14768   if (!gtk_tree_model_get_iter_first (model, &iter))
14769     return;
14770
14771   ret = gtk_tree_view_search_iter (model, selection,
14772                                    &iter, text,
14773                                    &count, 1);
14774
14775   if (ret)
14776     tree_view->priv->selected_iter = 1;
14777 }
14778
14779 static void
14780 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14781                              GtkTreeView     *tree_view)
14782 {
14783   if (tree_view->priv->edited_column == NULL)
14784     return;
14785
14786   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14787   tree_view->priv->edited_column = NULL;
14788
14789   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14790     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14791
14792   g_signal_handlers_disconnect_by_func (cell_editable,
14793                                         gtk_tree_view_remove_widget,
14794                                         tree_view);
14795
14796   gtk_container_remove (GTK_CONTAINER (tree_view),
14797                         GTK_WIDGET (cell_editable));
14798
14799   /* FIXME should only redraw a single node */
14800   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14801 }
14802
14803 static gboolean
14804 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14805                              GtkTreePath *cursor_path)
14806 {
14807   GtkTreeIter iter;
14808   GdkRectangle background_area;
14809   GdkRectangle cell_area;
14810   GtkCellEditable *editable_widget = NULL;
14811   gchar *path_string;
14812   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14813   gint retval = FALSE;
14814   GtkRBTree *cursor_tree;
14815   GtkRBNode *cursor_node;
14816
14817   g_assert (tree_view->priv->focus_column);
14818
14819   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14820     return FALSE;
14821
14822   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14823       cursor_node == NULL)
14824     return FALSE;
14825
14826   path_string = gtk_tree_path_to_string (cursor_path);
14827   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14828
14829   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14830
14831   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14832                                            tree_view->priv->model,
14833                                            &iter,
14834                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14835                                            cursor_node->children?TRUE:FALSE);
14836   gtk_tree_view_get_background_area (tree_view,
14837                                      cursor_path,
14838                                      tree_view->priv->focus_column,
14839                                      &background_area);
14840   gtk_tree_view_get_cell_area (tree_view,
14841                                cursor_path,
14842                                tree_view->priv->focus_column,
14843                                &cell_area);
14844
14845   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14846                                         &editable_widget,
14847                                         NULL,
14848                                         path_string,
14849                                         &background_area,
14850                                         &cell_area,
14851                                         flags))
14852     {
14853       retval = TRUE;
14854       if (editable_widget != NULL)
14855         {
14856           gint left, right;
14857           GdkRectangle area;
14858           GtkCellRenderer *cell;
14859
14860           area = cell_area;
14861           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14862
14863           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14864
14865           area.x += left;
14866           area.width -= right + left;
14867
14868           gtk_tree_view_real_start_editing (tree_view,
14869                                             tree_view->priv->focus_column,
14870                                             cursor_path,
14871                                             editable_widget,
14872                                             &area,
14873                                             NULL,
14874                                             flags);
14875         }
14876
14877     }
14878   g_free (path_string);
14879   return retval;
14880 }
14881
14882 static void
14883 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14884                                   GtkTreeViewColumn *column,
14885                                   GtkTreePath       *path,
14886                                   GtkCellEditable   *cell_editable,
14887                                   GdkRectangle      *cell_area,
14888                                   GdkEvent          *event,
14889                                   guint              flags)
14890 {
14891   gint pre_val = tree_view->priv->vadjustment->value;
14892   GtkRequisition requisition;
14893
14894   tree_view->priv->edited_column = column;
14895   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14896
14897   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14898   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14899
14900   gtk_size_request_get_size (GTK_SIZE_REQUEST (cell_editable),
14901                              &requisition, NULL);
14902
14903   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14904
14905   if (requisition.height < cell_area->height)
14906     {
14907       gint diff = cell_area->height - requisition.height;
14908       gtk_tree_view_put (tree_view,
14909                          GTK_WIDGET (cell_editable),
14910                          cell_area->x, cell_area->y + diff/2,
14911                          cell_area->width, requisition.height);
14912     }
14913   else
14914     {
14915       gtk_tree_view_put (tree_view,
14916                          GTK_WIDGET (cell_editable),
14917                          cell_area->x, cell_area->y,
14918                          cell_area->width, cell_area->height);
14919     }
14920
14921   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14922                                    (GdkEvent *)event);
14923
14924   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14925   g_signal_connect (cell_editable, "remove-widget",
14926                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14927 }
14928
14929 static void
14930 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14931                             gboolean     cancel_editing)
14932 {
14933   GtkTreeViewColumn *column;
14934   GtkCellRenderer *cell;
14935
14936   if (tree_view->priv->edited_column == NULL)
14937     return;
14938
14939   /*
14940    * This is very evil. We need to do this, because
14941    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14942    * later on. If gtk_tree_view_row_changed notices
14943    * tree_view->priv->edited_column != NULL, it'll call
14944    * gtk_tree_view_stop_editing again. Bad things will happen then.
14945    *
14946    * Please read that again if you intend to modify anything here.
14947    */
14948
14949   column = tree_view->priv->edited_column;
14950   tree_view->priv->edited_column = NULL;
14951
14952   cell = _gtk_tree_view_column_get_edited_cell (column);
14953   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14954
14955   if (!cancel_editing)
14956     gtk_cell_editable_editing_done (column->editable_widget);
14957
14958   tree_view->priv->edited_column = column;
14959
14960   gtk_cell_editable_remove_widget (column->editable_widget);
14961 }
14962
14963
14964 /**
14965  * gtk_tree_view_set_hover_selection:
14966  * @tree_view: a #GtkTreeView
14967  * @hover: %TRUE to enable hover selection mode
14968  *
14969  * Enables of disables the hover selection mode of @tree_view.
14970  * Hover selection makes the selected row follow the pointer.
14971  * Currently, this works only for the selection modes
14972  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14973  *
14974  * Since: 2.6
14975  **/
14976 void
14977 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14978                                    gboolean     hover)
14979 {
14980   hover = hover != FALSE;
14981
14982   if (hover != tree_view->priv->hover_selection)
14983     {
14984       tree_view->priv->hover_selection = hover;
14985
14986       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14987     }
14988 }
14989
14990 /**
14991  * gtk_tree_view_get_hover_selection:
14992  * @tree_view: a #GtkTreeView
14993  *
14994  * Returns whether hover selection mode is turned on for @tree_view.
14995  *
14996  * Return value: %TRUE if @tree_view is in hover selection mode
14997  *
14998  * Since: 2.6
14999  **/
15000 gboolean
15001 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
15002 {
15003   return tree_view->priv->hover_selection;
15004 }
15005
15006 /**
15007  * gtk_tree_view_set_hover_expand:
15008  * @tree_view: a #GtkTreeView
15009  * @expand: %TRUE to enable hover selection mode
15010  *
15011  * Enables of disables the hover expansion mode of @tree_view.
15012  * Hover expansion makes rows expand or collapse if the pointer
15013  * moves over them.
15014  *
15015  * Since: 2.6
15016  **/
15017 void
15018 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15019                                 gboolean     expand)
15020 {
15021   expand = expand != FALSE;
15022
15023   if (expand != tree_view->priv->hover_expand)
15024     {
15025       tree_view->priv->hover_expand = expand;
15026
15027       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15028     }
15029 }
15030
15031 /**
15032  * gtk_tree_view_get_hover_expand:
15033  * @tree_view: a #GtkTreeView
15034  *
15035  * Returns whether hover expansion mode is turned on for @tree_view.
15036  *
15037  * Return value: %TRUE if @tree_view is in hover expansion mode
15038  *
15039  * Since: 2.6
15040  **/
15041 gboolean
15042 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15043 {
15044   return tree_view->priv->hover_expand;
15045 }
15046
15047 /**
15048  * gtk_tree_view_set_rubber_banding:
15049  * @tree_view: a #GtkTreeView
15050  * @enable: %TRUE to enable rubber banding
15051  *
15052  * Enables or disables rubber banding in @tree_view.  If the selection mode
15053  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15054  * multiple rows by dragging the mouse.
15055  *
15056  * Since: 2.10
15057  **/
15058 void
15059 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15060                                   gboolean     enable)
15061 {
15062   enable = enable != FALSE;
15063
15064   if (enable != tree_view->priv->rubber_banding_enable)
15065     {
15066       tree_view->priv->rubber_banding_enable = enable;
15067
15068       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15069     }
15070 }
15071
15072 /**
15073  * gtk_tree_view_get_rubber_banding:
15074  * @tree_view: a #GtkTreeView
15075  *
15076  * Returns whether rubber banding is turned on for @tree_view.  If the
15077  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15078  * user to select multiple rows by dragging the mouse.
15079  *
15080  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15081  *
15082  * Since: 2.10
15083  **/
15084 gboolean
15085 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15086 {
15087   return tree_view->priv->rubber_banding_enable;
15088 }
15089
15090 /**
15091  * gtk_tree_view_is_rubber_banding_active:
15092  * @tree_view: a #GtkTreeView
15093  *
15094  * Returns whether a rubber banding operation is currently being done
15095  * in @tree_view.
15096  *
15097  * Return value: %TRUE if a rubber banding operation is currently being
15098  * done in @tree_view.
15099  *
15100  * Since: 2.12
15101  **/
15102 gboolean
15103 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15104 {
15105   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15106
15107   if (tree_view->priv->rubber_banding_enable
15108       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15109     return TRUE;
15110
15111   return FALSE;
15112 }
15113
15114 /**
15115  * gtk_tree_view_get_row_separator_func:
15116  * @tree_view: a #GtkTreeView
15117  *
15118  * Returns the current row separator function.
15119  *
15120  * Return value: the current row separator function.
15121  *
15122  * Since: 2.6
15123  **/
15124 GtkTreeViewRowSeparatorFunc
15125 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15126 {
15127   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15128
15129   return tree_view->priv->row_separator_func;
15130 }
15131
15132 /**
15133  * gtk_tree_view_set_row_separator_func:
15134  * @tree_view: a #GtkTreeView
15135  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15136  * @data: (allow-none): user data to pass to @func, or %NULL
15137  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15138  *
15139  * Sets the row separator function, which is used to determine
15140  * whether a row should be drawn as a separator. If the row separator
15141  * function is %NULL, no separators are drawn. This is the default value.
15142  *
15143  * Since: 2.6
15144  **/
15145 void
15146 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15147                                       GtkTreeViewRowSeparatorFunc  func,
15148                                       gpointer                     data,
15149                                       GDestroyNotify               destroy)
15150 {
15151   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15152
15153   if (tree_view->priv->row_separator_destroy)
15154     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15155
15156   tree_view->priv->row_separator_func = func;
15157   tree_view->priv->row_separator_data = data;
15158   tree_view->priv->row_separator_destroy = destroy;
15159
15160   /* Have the tree recalculate heights */
15161   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15162   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15163 }
15164
15165
15166 static void
15167 gtk_tree_view_grab_notify (GtkWidget *widget,
15168                            gboolean   was_grabbed)
15169 {
15170   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15171
15172   tree_view->priv->in_grab = !was_grabbed;
15173
15174   if (!was_grabbed)
15175     {
15176       tree_view->priv->pressed_button = -1;
15177
15178       if (tree_view->priv->rubber_band_status)
15179         gtk_tree_view_stop_rubber_band (tree_view);
15180     }
15181 }
15182
15183 static void
15184 gtk_tree_view_state_changed (GtkWidget      *widget,
15185                              GtkStateType    previous_state)
15186 {
15187   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15188
15189   if (gtk_widget_get_realized (widget))
15190     {
15191       gdk_window_set_back_pixmap (gtk_widget_get_window (widget), NULL, FALSE);
15192       gdk_window_set_background (tree_view->priv->bin_window,
15193                                  &gtk_widget_get_style (widget)->base[gtk_widget_get_state (widget)]);
15194     }
15195
15196   gtk_widget_queue_draw (widget);
15197 }
15198
15199 /**
15200  * gtk_tree_view_get_grid_lines:
15201  * @tree_view: a #GtkTreeView
15202  *
15203  * Returns which grid lines are enabled in @tree_view.
15204  *
15205  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15206  * are enabled.
15207  *
15208  * Since: 2.10
15209  */
15210 GtkTreeViewGridLines
15211 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15212 {
15213   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15214
15215   return tree_view->priv->grid_lines;
15216 }
15217
15218 /**
15219  * gtk_tree_view_set_grid_lines:
15220  * @tree_view: a #GtkTreeView
15221  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15222  * enable.
15223  *
15224  * Sets which grid lines to draw in @tree_view.
15225  *
15226  * Since: 2.10
15227  */
15228 void
15229 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15230                               GtkTreeViewGridLines   grid_lines)
15231 {
15232   GtkTreeViewPrivate *priv;
15233   GtkWidget *widget;
15234   GtkTreeViewGridLines old_grid_lines;
15235
15236   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15237
15238   priv = tree_view->priv;
15239   widget = GTK_WIDGET (tree_view);
15240
15241   old_grid_lines = priv->grid_lines;
15242   priv->grid_lines = grid_lines;
15243
15244   if (gtk_widget_get_realized (widget))
15245     {
15246       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15247           priv->grid_line_width)
15248         {
15249           priv->grid_line_width = 0;
15250         }
15251
15252       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15253           !priv->grid_line_width)
15254         {
15255           gint8 *dash_list;
15256
15257           gtk_widget_style_get (widget,
15258                                 "grid-line-width", &priv->grid_line_width,
15259                                 "grid-line-pattern", (gchar *)&dash_list,
15260                                 NULL);
15261
15262           if (dash_list)
15263             {
15264               priv->grid_line_dashes[0] = dash_list[0];
15265               if (dash_list[0])
15266                 priv->grid_line_dashes[1] = dash_list[1];
15267
15268               g_free (dash_list);
15269             }
15270           else
15271             {
15272               priv->grid_line_dashes[0] = 1;
15273               priv->grid_line_dashes[1] = 1;
15274             }
15275         }
15276     }
15277
15278   if (old_grid_lines != grid_lines)
15279     {
15280       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15281
15282       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15283     }
15284 }
15285
15286 /**
15287  * gtk_tree_view_get_enable_tree_lines:
15288  * @tree_view: a #GtkTreeView.
15289  *
15290  * Returns whether or not tree lines are drawn in @tree_view.
15291  *
15292  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15293  * otherwise.
15294  *
15295  * Since: 2.10
15296  */
15297 gboolean
15298 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15299 {
15300   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15301
15302   return tree_view->priv->tree_lines_enabled;
15303 }
15304
15305 /**
15306  * gtk_tree_view_set_enable_tree_lines:
15307  * @tree_view: a #GtkTreeView
15308  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15309  *
15310  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15311  * This does not have any visible effects for lists.
15312  *
15313  * Since: 2.10
15314  */
15315 void
15316 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15317                                      gboolean     enabled)
15318 {
15319   GtkTreeViewPrivate *priv;
15320   GtkWidget *widget;
15321   gboolean was_enabled;
15322
15323   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15324
15325   enabled = enabled != FALSE;
15326
15327   priv = tree_view->priv;
15328   widget = GTK_WIDGET (tree_view);
15329
15330   was_enabled = priv->tree_lines_enabled;
15331
15332   priv->tree_lines_enabled = enabled;
15333
15334   if (gtk_widget_get_realized (widget))
15335     {
15336       if (!enabled && priv->tree_line_width)
15337         {
15338           priv->tree_line_width = 0;
15339         }
15340
15341       if (enabled && !priv->tree_line_width)
15342         {
15343           gint8 *dash_list;
15344           gtk_widget_style_get (widget,
15345                                 "tree-line-width", &priv->tree_line_width,
15346                                 "tree-line-pattern", (gchar *)&dash_list,
15347                                 NULL);
15348
15349           if (dash_list)
15350             {
15351               priv->tree_line_dashes[0] = dash_list[0];
15352               if (dash_list[0])
15353                 priv->tree_line_dashes[1] = dash_list[1];
15354
15355               g_free (dash_list);
15356             }
15357           else
15358             {
15359               priv->tree_line_dashes[0] = 1;
15360               priv->tree_line_dashes[1] = 1;
15361             }
15362         }
15363     }
15364
15365   if (was_enabled != enabled)
15366     {
15367       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15368
15369       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15370     }
15371 }
15372
15373
15374 /**
15375  * gtk_tree_view_set_show_expanders:
15376  * @tree_view: a #GtkTreeView
15377  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15378  *
15379  * Sets whether to draw and enable expanders and indent child rows in
15380  * @tree_view.  When disabled there will be no expanders visible in trees
15381  * and there will be no way to expand and collapse rows by default.  Also
15382  * note that hiding the expanders will disable the default indentation.  You
15383  * can set a custom indentation in this case using
15384  * gtk_tree_view_set_level_indentation().
15385  * This does not have any visible effects for lists.
15386  *
15387  * Since: 2.12
15388  */
15389 void
15390 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15391                                   gboolean     enabled)
15392 {
15393   gboolean was_enabled;
15394
15395   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15396
15397   enabled = enabled != FALSE;
15398   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15399
15400   if (enabled)
15401     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15402   else
15403     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15404
15405   if (enabled != was_enabled)
15406     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15407 }
15408
15409 /**
15410  * gtk_tree_view_get_show_expanders:
15411  * @tree_view: a #GtkTreeView.
15412  *
15413  * Returns whether or not expanders are drawn in @tree_view.
15414  *
15415  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15416  * otherwise.
15417  *
15418  * Since: 2.12
15419  */
15420 gboolean
15421 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15422 {
15423   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15424
15425   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15426 }
15427
15428 /**
15429  * gtk_tree_view_set_level_indentation:
15430  * @tree_view: a #GtkTreeView
15431  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15432  *
15433  * Sets the amount of extra indentation for child levels to use in @tree_view
15434  * in addition to the default indentation.  The value should be specified in
15435  * pixels, a value of 0 disables this feature and in this case only the default
15436  * indentation will be used.
15437  * This does not have any visible effects for lists.
15438  *
15439  * Since: 2.12
15440  */
15441 void
15442 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15443                                      gint         indentation)
15444 {
15445   tree_view->priv->level_indentation = indentation;
15446
15447   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15448 }
15449
15450 /**
15451  * gtk_tree_view_get_level_indentation:
15452  * @tree_view: a #GtkTreeView.
15453  *
15454  * Returns the amount, in pixels, of extra indentation for child levels
15455  * in @tree_view.
15456  *
15457  * Return value: the amount of extra indentation for child levels in
15458  * @tree_view.  A return value of 0 means that this feature is disabled.
15459  *
15460  * Since: 2.12
15461  */
15462 gint
15463 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15464 {
15465   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15466
15467   return tree_view->priv->level_indentation;
15468 }
15469
15470 /**
15471  * gtk_tree_view_set_tooltip_row:
15472  * @tree_view: a #GtkTreeView
15473  * @tooltip: a #GtkTooltip
15474  * @path: a #GtkTreePath
15475  *
15476  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15477  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15478  * See also gtk_tooltip_set_tip_area().
15479  *
15480  * Since: 2.12
15481  */
15482 void
15483 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15484                                GtkTooltip  *tooltip,
15485                                GtkTreePath *path)
15486 {
15487   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15488   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15489
15490   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15491 }
15492
15493 /**
15494  * gtk_tree_view_set_tooltip_cell:
15495  * @tree_view: a #GtkTreeView
15496  * @tooltip: a #GtkTooltip
15497  * @path: (allow-none): a #GtkTreePath or %NULL
15498  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15499  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15500  *
15501  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15502  * in common.  For example if @path is %NULL and @column is set, the tip
15503  * area will be set to the full area covered by @column.  See also
15504  * gtk_tooltip_set_tip_area().
15505  *
15506  * Note that if @path is not specified and @cell is set and part of a column
15507  * containing the expander, the tooltip might not show and hide at the correct
15508  * position.  In such cases @path must be set to the current node under the
15509  * mouse cursor for this function to operate correctly.
15510  *
15511  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15512  *
15513  * Since: 2.12
15514  */
15515 void
15516 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15517                                 GtkTooltip        *tooltip,
15518                                 GtkTreePath       *path,
15519                                 GtkTreeViewColumn *column,
15520                                 GtkCellRenderer   *cell)
15521 {
15522   GtkAllocation allocation;
15523   GdkRectangle rect;
15524
15525   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15526   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15527   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15528   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15529
15530   /* Determine x values. */
15531   if (column && cell)
15532     {
15533       GdkRectangle tmp;
15534       gint start, width;
15535
15536       /* We always pass in path here, whether it is NULL or not.
15537        * For cells in expander columns path must be specified so that
15538        * we can correctly account for the indentation.  This also means
15539        * that the tooltip is constrained vertically by the "Determine y
15540        * values" code below; this is not a real problem since cells actually
15541        * don't stretch vertically in constrast to columns.
15542        */
15543       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15544       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15545
15546       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15547                                                          tmp.x + start, 0,
15548                                                          &rect.x, NULL);
15549       rect.width = width;
15550     }
15551   else if (column)
15552     {
15553       GdkRectangle tmp;
15554
15555       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15556       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15557                                                          tmp.x, 0,
15558                                                          &rect.x, NULL);
15559       rect.width = tmp.width;
15560     }
15561   else
15562     {
15563       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
15564       rect.x = 0;
15565       rect.width = allocation.width;
15566     }
15567
15568   /* Determine y values. */
15569   if (path)
15570     {
15571       GdkRectangle tmp;
15572
15573       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15574       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15575                                                          0, tmp.y,
15576                                                          NULL, &rect.y);
15577       rect.height = tmp.height;
15578     }
15579   else
15580     {
15581       rect.y = 0;
15582       rect.height = tree_view->priv->vadjustment->page_size;
15583     }
15584
15585   gtk_tooltip_set_tip_area (tooltip, &rect);
15586 }
15587
15588 /**
15589  * gtk_tree_view_get_tooltip_context:
15590  * @tree_view: a #GtkTreeView
15591  * @x: the x coordinate (relative to widget coordinates)
15592  * @y: the y coordinate (relative to widget coordinates)
15593  * @keyboard_tip: whether this is a keyboard tooltip or not
15594  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15595  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15596  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15597  *
15598  * This function is supposed to be used in a #GtkWidget::query-tooltip
15599  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15600  * which are received in the signal handler, should be passed to this
15601  * function without modification.
15602  *
15603  * The return value indicates whether there is a tree view row at the given
15604  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15605  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15606  * @model, @path and @iter which have been provided will be set to point to
15607  * that row and the corresponding model.  @x and @y will always be converted
15608  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15609  *
15610  * Return value: whether or not the given tooltip context points to a row.
15611  *
15612  * Since: 2.12
15613  */
15614 gboolean
15615 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15616                                    gint          *x,
15617                                    gint          *y,
15618                                    gboolean       keyboard_tip,
15619                                    GtkTreeModel **model,
15620                                    GtkTreePath  **path,
15621                                    GtkTreeIter   *iter)
15622 {
15623   GtkTreePath *tmppath = NULL;
15624
15625   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15626   g_return_val_if_fail (x != NULL, FALSE);
15627   g_return_val_if_fail (y != NULL, FALSE);
15628
15629   if (keyboard_tip)
15630     {
15631       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15632
15633       if (!tmppath)
15634         return FALSE;
15635     }
15636   else
15637     {
15638       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15639                                                          x, y);
15640
15641       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15642                                           &tmppath, NULL, NULL, NULL))
15643         return FALSE;
15644     }
15645
15646   if (model)
15647     *model = gtk_tree_view_get_model (tree_view);
15648
15649   if (iter)
15650     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15651                              iter, tmppath);
15652
15653   if (path)
15654     *path = tmppath;
15655   else
15656     gtk_tree_path_free (tmppath);
15657
15658   return TRUE;
15659 }
15660
15661 static gboolean
15662 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15663                                     gint        x,
15664                                     gint        y,
15665                                     gboolean    keyboard_tip,
15666                                     GtkTooltip *tooltip,
15667                                     gpointer    data)
15668 {
15669   GValue value = { 0, };
15670   GValue transformed = { 0, };
15671   GtkTreeIter iter;
15672   GtkTreePath *path;
15673   GtkTreeModel *model;
15674   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15675
15676   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15677                                           &x, &y,
15678                                           keyboard_tip,
15679                                           &model, &path, &iter))
15680     return FALSE;
15681
15682   gtk_tree_model_get_value (model, &iter,
15683                             tree_view->priv->tooltip_column, &value);
15684
15685   g_value_init (&transformed, G_TYPE_STRING);
15686
15687   if (!g_value_transform (&value, &transformed))
15688     {
15689       g_value_unset (&value);
15690       gtk_tree_path_free (path);
15691
15692       return FALSE;
15693     }
15694
15695   g_value_unset (&value);
15696
15697   if (!g_value_get_string (&transformed))
15698     {
15699       g_value_unset (&transformed);
15700       gtk_tree_path_free (path);
15701
15702       return FALSE;
15703     }
15704
15705   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15706   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15707
15708   gtk_tree_path_free (path);
15709   g_value_unset (&transformed);
15710
15711   return TRUE;
15712 }
15713
15714 /**
15715  * gtk_tree_view_set_tooltip_column:
15716  * @tree_view: a #GtkTreeView
15717  * @column: an integer, which is a valid column number for @tree_view's model
15718  *
15719  * If you only plan to have simple (text-only) tooltips on full rows, you
15720  * can use this function to have #GtkTreeView handle these automatically
15721  * for you. @column should be set to the column in @tree_view's model
15722  * containing the tooltip texts, or -1 to disable this feature.
15723  *
15724  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15725  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15726  *
15727  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15728  * so &amp;, &lt;, etc have to be escaped in the text.
15729  *
15730  * Since: 2.12
15731  */
15732 void
15733 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15734                                   gint         column)
15735 {
15736   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15737
15738   if (column == tree_view->priv->tooltip_column)
15739     return;
15740
15741   if (column == -1)
15742     {
15743       g_signal_handlers_disconnect_by_func (tree_view,
15744                                             gtk_tree_view_set_tooltip_query_cb,
15745                                             NULL);
15746       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15747     }
15748   else
15749     {
15750       if (tree_view->priv->tooltip_column == -1)
15751         {
15752           g_signal_connect (tree_view, "query-tooltip",
15753                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15754           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15755         }
15756     }
15757
15758   tree_view->priv->tooltip_column = column;
15759   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15760 }
15761
15762 /**
15763  * gtk_tree_view_get_tooltip_column:
15764  * @tree_view: a #GtkTreeView
15765  *
15766  * Returns the column of @tree_view's model which is being used for
15767  * displaying tooltips on @tree_view's rows.
15768  *
15769  * Return value: the index of the tooltip column that is currently being
15770  * used, or -1 if this is disabled.
15771  *
15772  * Since: 2.12
15773  */
15774 gint
15775 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15776 {
15777   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15778
15779   return tree_view->priv->tooltip_column;
15780 }