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   style = gtk_widget_get_style (widget);
1853   gdk_window_set_background (tree_view->priv->bin_window,
1854                              &style->base[gtk_widget_get_state (widget)]);
1855   gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1856
1857   tmp_list = tree_view->priv->children;
1858   while (tmp_list)
1859     {
1860       GtkTreeViewChild *child = tmp_list->data;
1861       tmp_list = tmp_list->next;
1862
1863       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1864     }
1865
1866   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1867     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1868
1869   /* Need to call those here, since they create GCs */
1870   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1871   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1872
1873   install_presize_handler (tree_view);
1874 }
1875
1876 static void
1877 gtk_tree_view_unrealize (GtkWidget *widget)
1878 {
1879   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1880   GtkTreeViewPrivate *priv = tree_view->priv;
1881   GList *list;
1882
1883   if (priv->scroll_timeout != 0)
1884     {
1885       g_source_remove (priv->scroll_timeout);
1886       priv->scroll_timeout = 0;
1887     }
1888
1889   if (priv->auto_expand_timeout != 0)
1890     {
1891       g_source_remove (priv->auto_expand_timeout);
1892       priv->auto_expand_timeout = 0;
1893     }
1894
1895   if (priv->open_dest_timeout != 0)
1896     {
1897       g_source_remove (priv->open_dest_timeout);
1898       priv->open_dest_timeout = 0;
1899     }
1900
1901   remove_expand_collapse_timeout (tree_view);
1902
1903   if (priv->presize_handler_timer != 0)
1904     {
1905       g_source_remove (priv->presize_handler_timer);
1906       priv->presize_handler_timer = 0;
1907     }
1908
1909   if (priv->validate_rows_timer != 0)
1910     {
1911       g_source_remove (priv->validate_rows_timer);
1912       priv->validate_rows_timer = 0;
1913     }
1914
1915   if (priv->scroll_sync_timer != 0)
1916     {
1917       g_source_remove (priv->scroll_sync_timer);
1918       priv->scroll_sync_timer = 0;
1919     }
1920
1921   if (priv->typeselect_flush_timeout)
1922     {
1923       g_source_remove (priv->typeselect_flush_timeout);
1924       priv->typeselect_flush_timeout = 0;
1925     }
1926
1927   for (list = priv->columns; list; list = list->next)
1928     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1929
1930   gdk_window_set_user_data (priv->bin_window, NULL);
1931   gdk_window_destroy (priv->bin_window);
1932   priv->bin_window = NULL;
1933
1934   gdk_window_set_user_data (priv->header_window, NULL);
1935   gdk_window_destroy (priv->header_window);
1936   priv->header_window = NULL;
1937
1938   if (priv->drag_window)
1939     {
1940       gdk_window_set_user_data (priv->drag_window, NULL);
1941       gdk_window_destroy (priv->drag_window);
1942       priv->drag_window = NULL;
1943     }
1944
1945   if (priv->drag_highlight_window)
1946     {
1947       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1948       gdk_window_destroy (priv->drag_highlight_window);
1949       priv->drag_highlight_window = NULL;
1950     }
1951
1952   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1953 }
1954
1955 /* GtkWidget::size_request helper */
1956 static void
1957 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1958 {
1959   GList *list;
1960
1961   tree_view->priv->header_height = 0;
1962
1963   if (tree_view->priv->model)
1964     {
1965       for (list = tree_view->priv->columns; list; list = list->next)
1966         {
1967           GtkRequisition requisition;
1968           GtkTreeViewColumn *column = list->data;
1969
1970           if (column->button == NULL)
1971             continue;
1972
1973           column = list->data;
1974
1975           gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button),
1976                                      &requisition, NULL);
1977           column->button_request = requisition.width;
1978           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1979         }
1980     }
1981 }
1982
1983
1984 /* Called only by ::size_request */
1985 static void
1986 gtk_tree_view_update_size (GtkTreeView *tree_view)
1987 {
1988   GList *list;
1989   GtkTreeViewColumn *column;
1990   gint i;
1991
1992   if (tree_view->priv->model == NULL)
1993     {
1994       tree_view->priv->width = 0;
1995       tree_view->priv->prev_width = 0;
1996       tree_view->priv->height = 0;
1997       return;
1998     }
1999
2000   tree_view->priv->prev_width = tree_view->priv->width;
2001   tree_view->priv->width = 0;
2002
2003   /* keep this in sync with size_allocate below */
2004   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2005     {
2006       gint real_requested_width = 0;
2007       column = list->data;
2008       if (!column->visible)
2009         continue;
2010
2011       if (column->use_resized_width)
2012         {
2013           real_requested_width = column->resized_width;
2014         }
2015       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2016         {
2017           real_requested_width = column->fixed_width;
2018         }
2019       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2020         {
2021           real_requested_width = MAX (column->requested_width, column->button_request);
2022         }
2023       else
2024         {
2025           real_requested_width = column->requested_width;
2026         }
2027
2028       if (column->min_width != -1)
2029         real_requested_width = MAX (real_requested_width, column->min_width);
2030       if (column->max_width != -1)
2031         real_requested_width = MIN (real_requested_width, column->max_width);
2032
2033       tree_view->priv->width += real_requested_width;
2034     }
2035
2036   if (tree_view->priv->tree == NULL)
2037     tree_view->priv->height = 0;
2038   else
2039     tree_view->priv->height = tree_view->priv->tree->root->offset;
2040 }
2041
2042 static void
2043 gtk_tree_view_size_request (GtkWidget      *widget,
2044                             GtkRequisition *requisition)
2045 {
2046   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2047   GList *tmp_list;
2048
2049   /* we validate some rows initially just to make sure we have some size.
2050    * In practice, with a lot of static lists, this should get a good width.
2051    */
2052   do_validate_rows (tree_view, FALSE);
2053   gtk_tree_view_size_request_columns (tree_view);
2054   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2055
2056   requisition->width = tree_view->priv->width;
2057   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2058
2059   tmp_list = tree_view->priv->children;
2060
2061   while (tmp_list)
2062     {
2063       GtkTreeViewChild *child = tmp_list->data;
2064       GtkRequisition child_requisition;
2065
2066       tmp_list = tmp_list->next;
2067
2068       if (gtk_widget_get_visible (child->widget))
2069         gtk_size_request_get_size (GTK_SIZE_REQUEST (child->widget),
2070                                    &child_requisition, NULL);
2071     }
2072 }
2073
2074 static int
2075 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2076 {
2077   int width = 0;
2078   GList *list;
2079   gboolean rtl;
2080
2081   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2082   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2083        list->data != tree_view->priv->expander_column;
2084        list = (rtl ? list->prev : list->next))
2085     {
2086       GtkTreeViewColumn *column = list->data;
2087
2088       width += column->width;
2089     }
2090
2091   return width;
2092 }
2093
2094 static void
2095 invalidate_column (GtkTreeView       *tree_view,
2096                    GtkTreeViewColumn *column)
2097 {
2098   gint column_offset = 0;
2099   GList *list;
2100   GtkWidget *widget = GTK_WIDGET (tree_view);
2101   gboolean rtl;
2102
2103   if (!gtk_widget_get_realized (widget))
2104     return;
2105
2106   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2107   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2108        list;
2109        list = (rtl ? list->prev : list->next))
2110     {
2111       GtkTreeViewColumn *tmpcolumn = list->data;
2112       if (tmpcolumn == column)
2113         {
2114           GtkAllocation allocation;
2115           GdkRectangle invalid_rect;
2116
2117           gtk_widget_get_allocation (widget, &allocation);
2118           invalid_rect.x = column_offset;
2119           invalid_rect.y = 0;
2120           invalid_rect.width = column->width;
2121           invalid_rect.height = allocation.height;
2122
2123           gdk_window_invalidate_rect (gtk_widget_get_window (widget), &invalid_rect, TRUE);
2124           break;
2125         }
2126
2127       column_offset += tmpcolumn->width;
2128     }
2129 }
2130
2131 static void
2132 invalidate_last_column (GtkTreeView *tree_view)
2133 {
2134   GList *last_column;
2135   gboolean rtl;
2136
2137   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2138
2139   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2140        last_column;
2141        last_column = (rtl ? last_column->next : last_column->prev))
2142     {
2143       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2144         {
2145           invalidate_column (tree_view, last_column->data);
2146           return;
2147         }
2148     }
2149 }
2150
2151 static gint
2152 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2153                                                     GtkTreeViewColumn *column)
2154 {
2155   gint real_requested_width;
2156
2157   if (column->use_resized_width)
2158     {
2159       real_requested_width = column->resized_width;
2160     }
2161   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2162     {
2163       real_requested_width = column->fixed_width;
2164     }
2165   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2166     {
2167       real_requested_width = MAX (column->requested_width, column->button_request);
2168     }
2169   else
2170     {
2171       real_requested_width = column->requested_width;
2172       if (real_requested_width < 0)
2173         real_requested_width = 0;
2174     }
2175
2176   if (column->min_width != -1)
2177     real_requested_width = MAX (real_requested_width, column->min_width);
2178   if (column->max_width != -1)
2179     real_requested_width = MIN (real_requested_width, column->max_width);
2180
2181   return real_requested_width;
2182 }
2183
2184 /* GtkWidget::size_allocate helper */
2185 static void
2186 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2187                                      gboolean  *width_changed)
2188 {
2189   GtkTreeView *tree_view;
2190   GList *list, *first_column, *last_column;
2191   GtkTreeViewColumn *column;
2192   GtkAllocation allocation;
2193   GtkAllocation widget_allocation;
2194   gint width = 0;
2195   gint extra, extra_per_column, extra_for_last;
2196   gint full_requested_width = 0;
2197   gint number_of_expand_columns = 0;
2198   gboolean column_changed = FALSE;
2199   gboolean rtl;
2200   gboolean update_expand;
2201
2202   tree_view = GTK_TREE_VIEW (widget);
2203
2204   for (last_column = g_list_last (tree_view->priv->columns);
2205        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2206        last_column = last_column->prev)
2207     ;
2208   if (last_column == NULL)
2209     return;
2210
2211   for (first_column = g_list_first (tree_view->priv->columns);
2212        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2213        first_column = first_column->next)
2214     ;
2215
2216   allocation.y = 0;
2217   allocation.height = tree_view->priv->header_height;
2218
2219   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2220
2221   /* find out how many extra space and expandable columns we have */
2222   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2223     {
2224       column = (GtkTreeViewColumn *)list->data;
2225
2226       if (!column->visible)
2227         continue;
2228
2229       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2230
2231       if (column->expand)
2232         number_of_expand_columns++;
2233     }
2234
2235   /* Only update the expand value if the width of the widget has changed,
2236    * or the number of expand columns has changed, or if there are no expand
2237    * columns, or if we didn't have an size-allocation yet after the
2238    * last validated node.
2239    */
2240   update_expand = (width_changed && *width_changed == TRUE)
2241       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2242       || number_of_expand_columns == 0
2243       || tree_view->priv->post_validation_flag == TRUE;
2244
2245   tree_view->priv->post_validation_flag = FALSE;
2246
2247   gtk_widget_get_allocation (widget, &widget_allocation);
2248   if (!update_expand)
2249     {
2250       extra = tree_view->priv->last_extra_space;
2251       extra_for_last = MAX (widget_allocation.width - full_requested_width - extra, 0);
2252     }
2253   else
2254     {
2255       extra = MAX (widget_allocation.width - full_requested_width, 0);
2256       extra_for_last = 0;
2257
2258       tree_view->priv->last_extra_space = extra;
2259     }
2260
2261   if (number_of_expand_columns > 0)
2262     extra_per_column = extra/number_of_expand_columns;
2263   else
2264     extra_per_column = 0;
2265
2266   if (update_expand)
2267     {
2268       tree_view->priv->last_extra_space_per_column = extra_per_column;
2269       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2270     }
2271
2272   for (list = (rtl ? last_column : first_column);
2273        list != (rtl ? first_column->prev : last_column->next);
2274        list = (rtl ? list->prev : list->next))
2275     {
2276       gint real_requested_width = 0;
2277       gint old_width;
2278
2279       column = list->data;
2280       old_width = column->width;
2281
2282       if (!column->visible)
2283         continue;
2284
2285       /* We need to handle the dragged button specially.
2286        */
2287       if (column == tree_view->priv->drag_column)
2288         {
2289           GtkAllocation drag_allocation;
2290           gdk_drawable_get_size (tree_view->priv->drag_window,
2291                                  &(drag_allocation.width),
2292                                  &(drag_allocation.height));
2293           drag_allocation.x = 0;
2294           drag_allocation.y = 0;
2295           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2296                                     &drag_allocation);
2297           width += drag_allocation.width;
2298           continue;
2299         }
2300
2301       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2302
2303       allocation.x = width;
2304       column->width = real_requested_width;
2305
2306       if (column->expand)
2307         {
2308           if (number_of_expand_columns == 1)
2309             {
2310               /* We add the remander to the last column as
2311                * */
2312               column->width += extra;
2313             }
2314           else
2315             {
2316               column->width += extra_per_column;
2317               extra -= extra_per_column;
2318               number_of_expand_columns --;
2319             }
2320         }
2321       else if (number_of_expand_columns == 0 &&
2322                list == last_column)
2323         {
2324           column->width += extra;
2325         }
2326
2327       /* In addition to expand, the last column can get even more
2328        * extra space so all available space is filled up.
2329        */
2330       if (extra_for_last > 0 && list == last_column)
2331         column->width += extra_for_last;
2332
2333       g_object_notify (G_OBJECT (column), "width");
2334
2335       allocation.width = column->width;
2336       width += column->width;
2337
2338       if (column->width > old_width)
2339         column_changed = TRUE;
2340
2341       gtk_widget_size_allocate (column->button, &allocation);
2342
2343       if (column->window)
2344         gdk_window_move_resize (column->window,
2345                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2346                                 allocation.y,
2347                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2348     }
2349
2350   /* We change the width here.  The user might have been resizing columns,
2351    * so the total width of the tree view changes.
2352    */
2353   tree_view->priv->width = width;
2354   if (width_changed)
2355     *width_changed = TRUE;
2356
2357   if (column_changed)
2358     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2359 }
2360
2361
2362 static void
2363 gtk_tree_view_size_allocate (GtkWidget     *widget,
2364                              GtkAllocation *allocation)
2365 {
2366   GtkAllocation widget_allocation;
2367   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2368   GList *tmp_list;
2369   gboolean width_changed = FALSE;
2370   gint old_width;
2371
2372   gtk_widget_get_allocation (widget, &widget_allocation);
2373   old_width = widget_allocation.width;
2374   if (allocation->width != widget_allocation.width)
2375     width_changed = TRUE;
2376
2377   gtk_widget_set_allocation (widget, allocation);
2378
2379   tmp_list = tree_view->priv->children;
2380
2381   while (tmp_list)
2382     {
2383       GtkAllocation allocation;
2384
2385       GtkTreeViewChild *child = tmp_list->data;
2386       tmp_list = tmp_list->next;
2387
2388       /* totally ignore our child's requisition */
2389       allocation.x = child->x;
2390       allocation.y = child->y;
2391       allocation.width = child->width;
2392       allocation.height = child->height;
2393       gtk_widget_size_allocate (child->widget, &allocation);
2394     }
2395
2396   /* We size-allocate the columns first because the width of the
2397    * tree view (used in updating the adjustments below) might change.
2398    */
2399   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2400
2401   tree_view->priv->hadjustment->page_size = allocation->width;
2402   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2403   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2404   tree_view->priv->hadjustment->lower = 0;
2405   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2406
2407   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2408     {
2409       if (allocation->width < tree_view->priv->width)
2410         {
2411           if (tree_view->priv->init_hadjust_value)
2412             {
2413               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2414               tree_view->priv->init_hadjust_value = FALSE;
2415             }
2416           else if (allocation->width != old_width)
2417             {
2418               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2419             }
2420           else
2421             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);
2422         }
2423       else
2424         {
2425           tree_view->priv->hadjustment->value = 0;
2426           tree_view->priv->init_hadjust_value = TRUE;
2427         }
2428     }
2429   else
2430     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2431       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2432
2433   gtk_adjustment_changed (tree_view->priv->hadjustment);
2434
2435   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2436   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2437   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2438   tree_view->priv->vadjustment->lower = 0;
2439   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2440
2441   gtk_adjustment_changed (tree_view->priv->vadjustment);
2442
2443   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2444   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2445     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2446   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2447     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2448                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2449   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2450     gtk_tree_view_top_row_to_dy (tree_view);
2451   else
2452     gtk_tree_view_dy_to_top_row (tree_view);
2453
2454   if (gtk_widget_get_realized (widget))
2455     {
2456       gdk_window_move_resize (gtk_widget_get_window (widget),
2457                               allocation->x, allocation->y,
2458                               allocation->width, allocation->height);
2459       gdk_window_move_resize (tree_view->priv->header_window,
2460                               - (gint) tree_view->priv->hadjustment->value,
2461                               0,
2462                               MAX (tree_view->priv->width, allocation->width),
2463                               tree_view->priv->header_height);
2464       gdk_window_move_resize (tree_view->priv->bin_window,
2465                               - (gint) tree_view->priv->hadjustment->value,
2466                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2467                               MAX (tree_view->priv->width, allocation->width),
2468                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2469     }
2470
2471   if (tree_view->priv->tree == NULL)
2472     invalidate_empty_focus (tree_view);
2473
2474   if (gtk_widget_get_realized (widget))
2475     {
2476       gboolean has_expand_column = FALSE;
2477       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2478         {
2479           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2480             {
2481               has_expand_column = TRUE;
2482               break;
2483             }
2484         }
2485
2486       if (width_changed && tree_view->priv->expander_column)
2487         {
2488           /* Might seem awkward, but is the best heuristic I could come up
2489            * with.  Only if the width of the columns before the expander
2490            * changes, we will update the prelight status.  It is this
2491            * width that makes the expander move vertically.  Always updating
2492            * prelight status causes trouble with hover selections.
2493            */
2494           gint width_before_expander;
2495
2496           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2497
2498           if (tree_view->priv->prev_width_before_expander
2499               != width_before_expander)
2500               update_prelight (tree_view,
2501                                tree_view->priv->event_last_x,
2502                                tree_view->priv->event_last_y);
2503
2504           tree_view->priv->prev_width_before_expander = width_before_expander;
2505         }
2506
2507       /* This little hack only works if we have an LTR locale, and no column has the  */
2508       if (width_changed)
2509         {
2510           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2511               ! has_expand_column)
2512             invalidate_last_column (tree_view);
2513           else
2514             gtk_widget_queue_draw (widget);
2515         }
2516     }
2517 }
2518
2519 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2520 static void
2521 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2522 {
2523   GtkWidget *widget = GTK_WIDGET (tree_view);
2524
2525   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2526     gtk_widget_grab_focus (widget);
2527   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2528 }
2529
2530 static inline gboolean
2531 row_is_separator (GtkTreeView *tree_view,
2532                   GtkTreeIter *iter,
2533                   GtkTreePath *path)
2534 {
2535   gboolean is_separator = FALSE;
2536
2537   if (tree_view->priv->row_separator_func)
2538     {
2539       GtkTreeIter tmpiter;
2540
2541       if (iter)
2542         tmpiter = *iter;
2543       else
2544         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2545
2546       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2547                                                           &tmpiter,
2548                                                           tree_view->priv->row_separator_data);
2549     }
2550
2551   return is_separator;
2552 }
2553
2554 static gboolean
2555 gtk_tree_view_button_press (GtkWidget      *widget,
2556                             GdkEventButton *event)
2557 {
2558   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2559   GList *list;
2560   GtkTreeViewColumn *column = NULL;
2561   gint i;
2562   GdkRectangle background_area;
2563   GdkRectangle cell_area;
2564   gint vertical_separator;
2565   gint horizontal_separator;
2566   gboolean path_is_selectable;
2567   gboolean rtl;
2568
2569   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2570   gtk_tree_view_stop_editing (tree_view, FALSE);
2571   gtk_widget_style_get (widget,
2572                         "vertical-separator", &vertical_separator,
2573                         "horizontal-separator", &horizontal_separator,
2574                         NULL);
2575
2576
2577   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2578    * we're done handling the button press.
2579    */
2580
2581   if (event->window == tree_view->priv->bin_window)
2582     {
2583       GtkRBNode *node;
2584       GtkRBTree *tree;
2585       GtkTreePath *path;
2586       gchar *path_string;
2587       gint depth;
2588       gint new_y;
2589       gint y_offset;
2590       gint dval;
2591       gint pre_val, aft_val;
2592       GtkTreeViewColumn *column = NULL;
2593       GtkCellRenderer *focus_cell = NULL;
2594       gint column_handled_click = FALSE;
2595       gboolean row_double_click = FALSE;
2596       gboolean rtl;
2597       gboolean node_selected;
2598
2599       /* Empty tree? */
2600       if (tree_view->priv->tree == NULL)
2601         {
2602           grab_focus_and_unset_draw_keyfocus (tree_view);
2603           return TRUE;
2604         }
2605
2606       /* are we in an arrow? */
2607       if (tree_view->priv->prelight_node &&
2608           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2609           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2610         {
2611           if (event->button == 1)
2612             {
2613               gtk_grab_add (widget);
2614               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2615               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2616               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2617                                         tree_view->priv->prelight_tree,
2618                                         tree_view->priv->prelight_node,
2619                                         event->x,
2620                                         event->y);
2621             }
2622
2623           grab_focus_and_unset_draw_keyfocus (tree_view);
2624           return TRUE;
2625         }
2626
2627       /* find the node that was clicked */
2628       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2629       if (new_y < 0)
2630         new_y = 0;
2631       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2632
2633       if (node == NULL)
2634         {
2635           /* We clicked in dead space */
2636           grab_focus_and_unset_draw_keyfocus (tree_view);
2637           return TRUE;
2638         }
2639
2640       /* Get the path and the node */
2641       path = _gtk_tree_view_find_path (tree_view, tree, node);
2642       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2643
2644       if (!path_is_selectable)
2645         {
2646           gtk_tree_path_free (path);
2647           grab_focus_and_unset_draw_keyfocus (tree_view);
2648           return TRUE;
2649         }
2650
2651       depth = gtk_tree_path_get_depth (path);
2652       background_area.y = y_offset + event->y;
2653       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2654       background_area.x = 0;
2655
2656
2657       /* Let the column have a chance at selecting it. */
2658       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2659       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2660            list; list = (rtl ? list->prev : list->next))
2661         {
2662           GtkTreeViewColumn *candidate = list->data;
2663
2664           if (!candidate->visible)
2665             continue;
2666
2667           background_area.width = candidate->width;
2668           if ((background_area.x > (gint) event->x) ||
2669               (background_area.x + background_area.width <= (gint) event->x))
2670             {
2671               background_area.x += background_area.width;
2672               continue;
2673             }
2674
2675           /* we found the focus column */
2676           column = candidate;
2677           cell_area = background_area;
2678           cell_area.width -= horizontal_separator;
2679           cell_area.height -= vertical_separator;
2680           cell_area.x += horizontal_separator/2;
2681           cell_area.y += vertical_separator/2;
2682           if (gtk_tree_view_is_expander_column (tree_view, column))
2683             {
2684               if (!rtl)
2685                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2686               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2687
2688               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2689                 {
2690                   if (!rtl)
2691                     cell_area.x += depth * tree_view->priv->expander_size;
2692                   cell_area.width -= depth * tree_view->priv->expander_size;
2693                 }
2694             }
2695           break;
2696         }
2697
2698       if (column == NULL)
2699         {
2700           gtk_tree_path_free (path);
2701           grab_focus_and_unset_draw_keyfocus (tree_view);
2702           return FALSE;
2703         }
2704
2705       tree_view->priv->focus_column = column;
2706
2707       /* decide if we edit */
2708       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2709           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2710         {
2711           GtkTreePath *anchor;
2712           GtkTreeIter iter;
2713
2714           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2715           gtk_tree_view_column_cell_set_cell_data (column,
2716                                                    tree_view->priv->model,
2717                                                    &iter,
2718                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2719                                                    node->children?TRUE:FALSE);
2720
2721           if (tree_view->priv->anchor)
2722             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2723           else
2724             anchor = NULL;
2725
2726           if ((anchor && !gtk_tree_path_compare (anchor, path))
2727               || !_gtk_tree_view_column_has_editable_cell (column))
2728             {
2729               GtkCellEditable *cell_editable = NULL;
2730
2731               /* FIXME: get the right flags */
2732               guint flags = 0;
2733
2734               path_string = gtk_tree_path_to_string (path);
2735
2736               if (_gtk_tree_view_column_cell_event (column,
2737                                                     &cell_editable,
2738                                                     (GdkEvent *)event,
2739                                                     path_string,
2740                                                     &background_area,
2741                                                     &cell_area, flags))
2742                 {
2743                   if (cell_editable != NULL)
2744                     {
2745                       gint left, right;
2746                       GdkRectangle area;
2747
2748                       area = cell_area;
2749                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2750
2751                       area.x += left;
2752                       area.width -= right + left;
2753
2754                       gtk_tree_view_real_start_editing (tree_view,
2755                                                         column,
2756                                                         path,
2757                                                         cell_editable,
2758                                                         &area,
2759                                                         (GdkEvent *)event,
2760                                                         flags);
2761                       g_free (path_string);
2762                       gtk_tree_path_free (path);
2763                       gtk_tree_path_free (anchor);
2764                       return TRUE;
2765                     }
2766                   column_handled_click = TRUE;
2767                 }
2768               g_free (path_string);
2769             }
2770           if (anchor)
2771             gtk_tree_path_free (anchor);
2772         }
2773
2774       /* select */
2775       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2776       pre_val = tree_view->priv->vadjustment->value;
2777
2778       /* we only handle selection modifications on the first button press
2779        */
2780       if (event->type == GDK_BUTTON_PRESS)
2781         {
2782           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2783             tree_view->priv->ctrl_pressed = TRUE;
2784           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2785             tree_view->priv->shift_pressed = TRUE;
2786
2787           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2788           if (focus_cell)
2789             gtk_tree_view_column_focus_cell (column, focus_cell);
2790
2791           if (event->state & GDK_CONTROL_MASK)
2792             {
2793               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2794               gtk_tree_view_real_toggle_cursor_row (tree_view);
2795             }
2796           else if (event->state & GDK_SHIFT_MASK)
2797             {
2798               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2799               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2800             }
2801           else
2802             {
2803               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2804             }
2805
2806           tree_view->priv->ctrl_pressed = FALSE;
2807           tree_view->priv->shift_pressed = FALSE;
2808         }
2809
2810       /* the treeview may have been scrolled because of _set_cursor,
2811        * correct here
2812        */
2813
2814       aft_val = tree_view->priv->vadjustment->value;
2815       dval = pre_val - aft_val;
2816
2817       cell_area.y += dval;
2818       background_area.y += dval;
2819
2820       /* Save press to possibly begin a drag
2821        */
2822       if (!column_handled_click &&
2823           !tree_view->priv->in_grab &&
2824           tree_view->priv->pressed_button < 0)
2825         {
2826           tree_view->priv->pressed_button = event->button;
2827           tree_view->priv->press_start_x = event->x;
2828           tree_view->priv->press_start_y = event->y;
2829
2830           if (tree_view->priv->rubber_banding_enable
2831               && !node_selected
2832               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2833             {
2834               tree_view->priv->press_start_y += tree_view->priv->dy;
2835               tree_view->priv->rubber_band_x = event->x;
2836               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2837               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2838
2839               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2840                 tree_view->priv->rubber_band_ctrl = TRUE;
2841               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2842                 tree_view->priv->rubber_band_shift = TRUE;
2843             }
2844         }
2845
2846       /* Test if a double click happened on the same row. */
2847       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2848         {
2849           int double_click_time, double_click_distance;
2850
2851           g_object_get (gtk_settings_get_default (),
2852                         "gtk-double-click-time", &double_click_time,
2853                         "gtk-double-click-distance", &double_click_distance,
2854                         NULL);
2855
2856           /* Same conditions as _gdk_event_button_generate */
2857           if (tree_view->priv->last_button_x != -1 &&
2858               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2859               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2860               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2861             {
2862               /* We do no longer compare paths of this row and the
2863                * row clicked previously.  We use the double click
2864                * distance to decide whether this is a valid click,
2865                * allowing the mouse to slightly move over another row.
2866                */
2867               row_double_click = TRUE;
2868
2869               tree_view->priv->last_button_time = 0;
2870               tree_view->priv->last_button_x = -1;
2871               tree_view->priv->last_button_y = -1;
2872             }
2873           else
2874             {
2875               tree_view->priv->last_button_time = event->time;
2876               tree_view->priv->last_button_x = event->x;
2877               tree_view->priv->last_button_y = event->y;
2878             }
2879         }
2880
2881       if (row_double_click)
2882         {
2883           gtk_grab_remove (widget);
2884           gtk_tree_view_row_activated (tree_view, path, column);
2885
2886           if (tree_view->priv->pressed_button == event->button)
2887             tree_view->priv->pressed_button = -1;
2888         }
2889
2890       gtk_tree_path_free (path);
2891
2892       /* If we activated the row through a double click we don't want to grab
2893        * focus back, as moving focus to another widget is pretty common.
2894        */
2895       if (!row_double_click)
2896         grab_focus_and_unset_draw_keyfocus (tree_view);
2897
2898       return TRUE;
2899     }
2900
2901   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2902    */
2903   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2904     {
2905       column = list->data;
2906       if (event->window == column->window &&
2907           column->resizable &&
2908           column->window)
2909         {
2910           GtkAllocation button_allocation;
2911           gpointer drag_data;
2912
2913           if (event->type == GDK_2BUTTON_PRESS &&
2914               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2915             {
2916               column->use_resized_width = FALSE;
2917               _gtk_tree_view_column_autosize (tree_view, column);
2918               return TRUE;
2919             }
2920
2921           if (gdk_pointer_grab (column->window, FALSE,
2922                                 GDK_POINTER_MOTION_HINT_MASK |
2923                                 GDK_BUTTON1_MOTION_MASK |
2924                                 GDK_BUTTON_RELEASE_MASK,
2925                                 NULL, NULL, event->time))
2926             return FALSE;
2927
2928           gtk_grab_add (widget);
2929           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2930           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2931
2932           /* block attached dnd signal handler */
2933           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2934           if (drag_data)
2935             g_signal_handlers_block_matched (widget,
2936                                              G_SIGNAL_MATCH_DATA,
2937                                              0, 0, NULL, NULL,
2938                                              drag_data);
2939
2940           gtk_widget_get_allocation (column->button, &button_allocation);
2941           tree_view->priv->drag_pos = i;
2942           tree_view->priv->x_drag = button_allocation.x + (rtl ? 0 : button_allocation.width);
2943
2944           if (!gtk_widget_has_focus (widget))
2945             gtk_widget_grab_focus (widget);
2946
2947           return TRUE;
2948         }
2949     }
2950   return FALSE;
2951 }
2952
2953 /* GtkWidget::button_release_event helper */
2954 static gboolean
2955 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2956                                           GdkEventButton *event)
2957 {
2958   GtkTreeView *tree_view;
2959   GList *l;
2960   gboolean rtl;
2961
2962   tree_view = GTK_TREE_VIEW (widget);
2963
2964   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2965   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2966   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2967
2968   /* Move the button back */
2969   g_object_ref (tree_view->priv->drag_column->button);
2970   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2971   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2972   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2973   g_object_unref (tree_view->priv->drag_column->button);
2974   gtk_widget_queue_resize (widget);
2975   if (tree_view->priv->drag_column->resizable)
2976     {
2977       gdk_window_raise (tree_view->priv->drag_column->window);
2978       gdk_window_show (tree_view->priv->drag_column->window);
2979     }
2980   else
2981     gdk_window_hide (tree_view->priv->drag_column->window);
2982
2983   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2984
2985   if (rtl)
2986     {
2987       if (tree_view->priv->cur_reorder &&
2988           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2989         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2990                                          tree_view->priv->cur_reorder->right_column);
2991     }
2992   else
2993     {
2994       if (tree_view->priv->cur_reorder &&
2995           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2996         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2997                                          tree_view->priv->cur_reorder->left_column);
2998     }
2999   tree_view->priv->drag_column = NULL;
3000   gdk_window_hide (tree_view->priv->drag_window);
3001
3002   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3003     g_slice_free (GtkTreeViewColumnReorder, l->data);
3004   g_list_free (tree_view->priv->column_drag_info);
3005   tree_view->priv->column_drag_info = NULL;
3006   tree_view->priv->cur_reorder = NULL;
3007
3008   if (tree_view->priv->drag_highlight_window)
3009     gdk_window_hide (tree_view->priv->drag_highlight_window);
3010
3011   /* Reset our flags */
3012   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3013   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
3014
3015   return TRUE;
3016 }
3017
3018 /* GtkWidget::button_release_event helper */
3019 static gboolean
3020 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3021                                             GdkEventButton *event)
3022 {
3023   GtkTreeView *tree_view;
3024   gpointer drag_data;
3025
3026   tree_view = GTK_TREE_VIEW (widget);
3027
3028   tree_view->priv->drag_pos = -1;
3029
3030   /* unblock attached dnd signal handler */
3031   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3032   if (drag_data)
3033     g_signal_handlers_unblock_matched (widget,
3034                                        G_SIGNAL_MATCH_DATA,
3035                                        0, 0, NULL, NULL,
3036                                        drag_data);
3037
3038   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3039   gtk_grab_remove (widget);
3040   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3041                               event->time);
3042   return TRUE;
3043 }
3044
3045 static gboolean
3046 gtk_tree_view_button_release (GtkWidget      *widget,
3047                               GdkEventButton *event)
3048 {
3049   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3050
3051   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3052     return gtk_tree_view_button_release_drag_column (widget, event);
3053
3054   if (tree_view->priv->rubber_band_status)
3055     gtk_tree_view_stop_rubber_band (tree_view);
3056
3057   if (tree_view->priv->pressed_button == event->button)
3058     tree_view->priv->pressed_button = -1;
3059
3060   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3061     return gtk_tree_view_button_release_column_resize (widget, event);
3062
3063   if (tree_view->priv->button_pressed_node == NULL)
3064     return FALSE;
3065
3066   if (event->button == 1)
3067     {
3068       gtk_grab_remove (widget);
3069       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3070           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3071         {
3072           GtkTreePath *path = NULL;
3073
3074           path = _gtk_tree_view_find_path (tree_view,
3075                                            tree_view->priv->button_pressed_tree,
3076                                            tree_view->priv->button_pressed_node);
3077           /* Actually activate the node */
3078           if (tree_view->priv->button_pressed_node->children == NULL)
3079             gtk_tree_view_real_expand_row (tree_view, path,
3080                                            tree_view->priv->button_pressed_tree,
3081                                            tree_view->priv->button_pressed_node,
3082                                            FALSE, TRUE);
3083           else
3084             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3085                                              tree_view->priv->button_pressed_tree,
3086                                              tree_view->priv->button_pressed_node, TRUE);
3087           gtk_tree_path_free (path);
3088         }
3089
3090       tree_view->priv->button_pressed_tree = NULL;
3091       tree_view->priv->button_pressed_node = NULL;
3092     }
3093
3094   return TRUE;
3095 }
3096
3097 static gboolean
3098 gtk_tree_view_grab_broken (GtkWidget          *widget,
3099                            GdkEventGrabBroken *event)
3100 {
3101   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3102
3103   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3104     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3105
3106   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3107     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3108
3109   return TRUE;
3110 }
3111
3112 #if 0
3113 static gboolean
3114 gtk_tree_view_configure (GtkWidget *widget,
3115                          GdkEventConfigure *event)
3116 {
3117   GtkTreeView *tree_view;
3118
3119   tree_view = GTK_TREE_VIEW (widget);
3120   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3121
3122   return FALSE;
3123 }
3124 #endif
3125
3126 /* GtkWidget::motion_event function set.
3127  */
3128
3129 static gboolean
3130 coords_are_over_arrow (GtkTreeView *tree_view,
3131                        GtkRBTree   *tree,
3132                        GtkRBNode   *node,
3133                        /* these are in bin window coords */
3134                        gint         x,
3135                        gint         y)
3136 {
3137   GdkRectangle arrow;
3138   gint x2;
3139
3140   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3141     return FALSE;
3142
3143   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3144     return FALSE;
3145
3146   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3147
3148   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3149
3150   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3151
3152   arrow.width = x2 - arrow.x;
3153
3154   return (x >= arrow.x &&
3155           x < (arrow.x + arrow.width) &&
3156           y >= arrow.y &&
3157           y < (arrow.y + arrow.height));
3158 }
3159
3160 static gboolean
3161 auto_expand_timeout (gpointer data)
3162 {
3163   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3164   GtkTreePath *path;
3165
3166   if (tree_view->priv->prelight_node)
3167     {
3168       path = _gtk_tree_view_find_path (tree_view,
3169                                        tree_view->priv->prelight_tree,
3170                                        tree_view->priv->prelight_node);
3171
3172       if (tree_view->priv->prelight_node->children)
3173         gtk_tree_view_collapse_row (tree_view, path);
3174       else
3175         gtk_tree_view_expand_row (tree_view, path, FALSE);
3176
3177       gtk_tree_path_free (path);
3178     }
3179
3180   tree_view->priv->auto_expand_timeout = 0;
3181
3182   return FALSE;
3183 }
3184
3185 static void
3186 remove_auto_expand_timeout (GtkTreeView *tree_view)
3187 {
3188   if (tree_view->priv->auto_expand_timeout != 0)
3189     {
3190       g_source_remove (tree_view->priv->auto_expand_timeout);
3191       tree_view->priv->auto_expand_timeout = 0;
3192     }
3193 }
3194
3195 static void
3196 do_prelight (GtkTreeView *tree_view,
3197              GtkRBTree   *tree,
3198              GtkRBNode   *node,
3199              /* these are in bin_window coords */
3200              gint         x,
3201              gint         y)
3202 {
3203   if (tree_view->priv->prelight_tree == tree &&
3204       tree_view->priv->prelight_node == node)
3205     {
3206       /*  We are still on the same node,
3207           but we might need to take care of the arrow  */
3208
3209       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3210         {
3211           gboolean over_arrow;
3212           gboolean flag_set;
3213
3214           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3215           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3216                                              GTK_TREE_VIEW_ARROW_PRELIT);
3217
3218           if (over_arrow != flag_set)
3219             {
3220               if (over_arrow)
3221                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3222                                         GTK_TREE_VIEW_ARROW_PRELIT);
3223               else
3224                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3225                                           GTK_TREE_VIEW_ARROW_PRELIT);
3226
3227               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3228             }
3229         }
3230
3231       return;
3232     }
3233
3234   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3235     {
3236       /*  Unprelight the old node and arrow  */
3237
3238       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3239                              GTK_RBNODE_IS_PRELIT);
3240
3241       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3242           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3243         {
3244           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3245
3246           gtk_tree_view_draw_arrow (tree_view,
3247                                     tree_view->priv->prelight_tree,
3248                                     tree_view->priv->prelight_node,
3249                                     x,
3250                                     y);
3251         }
3252
3253       _gtk_tree_view_queue_draw_node (tree_view,
3254                                       tree_view->priv->prelight_tree,
3255                                       tree_view->priv->prelight_node,
3256                                       NULL);
3257     }
3258
3259
3260   if (tree_view->priv->hover_expand)
3261     remove_auto_expand_timeout (tree_view);
3262
3263   /*  Set the new prelight values  */
3264   tree_view->priv->prelight_node = node;
3265   tree_view->priv->prelight_tree = tree;
3266
3267   if (!node || !tree)
3268     return;
3269
3270   /*  Prelight the new node and arrow  */
3271
3272   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3273       && coords_are_over_arrow (tree_view, tree, node, x, y))
3274     {
3275       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3276
3277       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3278     }
3279
3280   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3281
3282   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3283
3284   if (tree_view->priv->hover_expand)
3285     {
3286       tree_view->priv->auto_expand_timeout =
3287         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3288     }
3289 }
3290
3291 static void
3292 prelight_or_select (GtkTreeView *tree_view,
3293                     GtkRBTree   *tree,
3294                     GtkRBNode   *node,
3295                     /* these are in bin_window coords */
3296                     gint         x,
3297                     gint         y)
3298 {
3299   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3300
3301   if (tree_view->priv->hover_selection &&
3302       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3303       !(tree_view->priv->edited_column &&
3304         tree_view->priv->edited_column->editable_widget))
3305     {
3306       if (node)
3307         {
3308           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3309             {
3310               GtkTreePath *path;
3311
3312               path = _gtk_tree_view_find_path (tree_view, tree, node);
3313               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3314               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3315                 {
3316                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3317                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3318                 }
3319               gtk_tree_path_free (path);
3320             }
3321         }
3322
3323       else if (mode == GTK_SELECTION_SINGLE)
3324         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3325     }
3326
3327     do_prelight (tree_view, tree, node, x, y);
3328 }
3329
3330 static void
3331 ensure_unprelighted (GtkTreeView *tree_view)
3332 {
3333   do_prelight (tree_view,
3334                NULL, NULL,
3335                -1000, -1000); /* coords not possibly over an arrow */
3336
3337   g_assert (tree_view->priv->prelight_node == NULL);
3338 }
3339
3340 static void
3341 update_prelight (GtkTreeView *tree_view,
3342                  gint         x,
3343                  gint         y)
3344 {
3345   int new_y;
3346   GtkRBTree *tree;
3347   GtkRBNode *node;
3348
3349   if (tree_view->priv->tree == NULL)
3350     return;
3351
3352   if (x == -10000)
3353     {
3354       ensure_unprelighted (tree_view);
3355       return;
3356     }
3357
3358   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3359   if (new_y < 0)
3360     new_y = 0;
3361
3362   _gtk_rbtree_find_offset (tree_view->priv->tree,
3363                            new_y, &tree, &node);
3364
3365   if (node)
3366     prelight_or_select (tree_view, tree, node, x, y);
3367 }
3368
3369
3370
3371
3372 /* Our motion arrow is either a box (in the case of the original spot)
3373  * or an arrow.  It is expander_size wide.
3374  */
3375 /*
3376  * 11111111111111
3377  * 01111111111110
3378  * 00111111111100
3379  * 00011111111000
3380  * 00001111110000
3381  * 00000111100000
3382  * 00000111100000
3383  * 00000111100000
3384  * ~ ~ ~ ~ ~ ~ ~
3385  * 00000111100000
3386  * 00000111100000
3387  * 00000111100000
3388  * 00001111110000
3389  * 00011111111000
3390  * 00111111111100
3391  * 01111111111110
3392  * 11111111111111
3393  */
3394
3395 static void
3396 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3397 {
3398   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3399   GtkWidget *widget = GTK_WIDGET (tree_view);
3400   cairo_surface_t *mask_image;
3401   cairo_region_t *mask_region;
3402   gint x;
3403   gint y;
3404   gint width;
3405   gint height;
3406   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3407   GdkWindowAttr attributes;
3408   guint attributes_mask;
3409   cairo_t *cr;
3410
3411   if (!reorder ||
3412       reorder->left_column == tree_view->priv->drag_column ||
3413       reorder->right_column == tree_view->priv->drag_column)
3414     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3415   else if (reorder->left_column || reorder->right_column)
3416     {
3417       GtkAllocation left_allocation, right_allocation;
3418       GdkRectangle visible_rect;
3419
3420       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3421       if (reorder->left_column)
3422         {
3423           gtk_widget_get_allocation (reorder->left_column->button, &left_allocation);
3424           x = left_allocation.x + left_allocation.width;
3425         }
3426       else
3427         {
3428           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
3429           x = right_allocation.x;
3430         }
3431
3432       if (x < visible_rect.x)
3433         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3434       else if (x > visible_rect.x + visible_rect.width)
3435         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3436       else
3437         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3438     }
3439
3440   /* We want to draw the rectangle over the initial location. */
3441   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3442     {
3443       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3444         {
3445           GtkAllocation drag_allocation;
3446
3447           if (tree_view->priv->drag_highlight_window)
3448             {
3449               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3450                                         NULL);
3451               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3452             }
3453
3454           attributes.window_type = GDK_WINDOW_CHILD;
3455           attributes.wclass = GDK_INPUT_OUTPUT;
3456           attributes.x = tree_view->priv->drag_column_x;
3457           attributes.y = 0;
3458           gtk_widget_get_allocation (tree_view->priv->drag_column->button, &drag_allocation);
3459           width = attributes.width = drag_allocation.width;
3460           height = attributes.height = drag_allocation.height;
3461           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3462           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3463           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3464           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3465           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3466           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3467
3468           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3469           cr = cairo_create (mask_image);
3470
3471           cairo_rectangle (cr, 1, 1, width - 2, height - 2);
3472           cairo_stroke (cr);
3473           cairo_destroy (cr);
3474
3475           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3476           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3477                                            mask_region, 0, 0);
3478
3479           cairo_region_destroy (mask_region);
3480           cairo_surface_destroy (mask_image);
3481
3482           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3483         }
3484     }
3485   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3486     {
3487       GtkAllocation button_allocation;
3488
3489       width = tree_view->priv->expander_size;
3490
3491       /* Get x, y, width, height of arrow */
3492       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3493       if (reorder->left_column)
3494         {
3495           gtk_widget_get_allocation (reorder->left_column->button, &button_allocation);
3496           x += button_allocation.x + button_allocation.width - width/2;
3497           height = button_allocation.height;
3498         }
3499       else
3500         {
3501           gtk_widget_get_allocation (reorder->right_column->button, &button_allocation);
3502           x += button_allocation.x - width/2;
3503           height = button_allocation.height;
3504         }
3505       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3506       height += tree_view->priv->expander_size;
3507
3508       /* Create the new window */
3509       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3510         {
3511           if (tree_view->priv->drag_highlight_window)
3512             {
3513               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3514                                         NULL);
3515               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3516             }
3517
3518           attributes.window_type = GDK_WINDOW_TEMP;
3519           attributes.wclass = GDK_INPUT_OUTPUT;
3520           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3521           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3522           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3523           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3524           attributes.x = x;
3525           attributes.y = y;
3526           attributes.width = width;
3527           attributes.height = height;
3528           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3529                                                                    &attributes, attributes_mask);
3530           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3531
3532           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3533
3534           cr = cairo_create (mask_image);
3535           cairo_move_to (cr, 0, 0);
3536           cairo_line_to (cr, width, 0);
3537           cairo_line_to (cr, width / 2., width / 2);
3538           cairo_move_to (cr, 0, height);
3539           cairo_line_to (cr, width, height);
3540           cairo_line_to (cr, width / 2., height - width / 2.);
3541           cairo_fill (cr);
3542           cairo_destroy (cr);
3543
3544           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3545           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3546                                            mask_region, 0, 0);
3547
3548           cairo_region_destroy (mask_region);
3549           cairo_surface_destroy (mask_image);
3550         }
3551
3552       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3553       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3554     }
3555   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3556            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3557     {
3558       GtkAllocation allocation;
3559
3560       width = tree_view->priv->expander_size;
3561
3562       /* Get x, y, width, height of arrow */
3563       width = width/2; /* remember, the arrow only takes half the available width */
3564       gdk_window_get_origin (gtk_widget_get_window (widget),
3565                              &x, &y);
3566       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3567         {
3568           gtk_widget_get_allocation (widget, &allocation);
3569           x += allocation.width - width;
3570         }
3571
3572       if (reorder->left_column)
3573         {
3574           gtk_widget_get_allocation (reorder->left_column->button, &allocation);
3575           height = allocation.height;
3576         }
3577       else
3578         {
3579           gtk_widget_get_allocation (reorder->right_column->button, &allocation);
3580           height = allocation.height;
3581         }
3582
3583       y -= tree_view->priv->expander_size;
3584       height += 2*tree_view->priv->expander_size;
3585
3586       /* Create the new window */
3587       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3588           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3589         {
3590           if (tree_view->priv->drag_highlight_window)
3591             {
3592               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3593                                         NULL);
3594               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3595             }
3596
3597           attributes.window_type = GDK_WINDOW_TEMP;
3598           attributes.wclass = GDK_INPUT_OUTPUT;
3599           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3600           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3601           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3602           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3603           attributes.x = x;
3604           attributes.y = y;
3605           attributes.width = width;
3606           attributes.height = height;
3607           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3608           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3609
3610           mask_image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
3611
3612           cr = cairo_create (mask_image);
3613           /* mirror if we're on the left */
3614           if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3615             {
3616               cairo_translate (cr, width, 0);
3617               cairo_scale (cr, -1, 1);
3618             }
3619           cairo_move_to (cr, 0, 0);
3620           cairo_line_to (cr, width, width);
3621           cairo_line_to (cr, 0, tree_view->priv->expander_size);
3622           cairo_move_to (cr, 0, height);
3623           cairo_line_to (cr, width, height - width);
3624           cairo_line_to (cr, 0, height - tree_view->priv->expander_size);
3625           cairo_fill (cr);
3626           cairo_destroy (cr);
3627
3628           mask_region = gdk_cairo_region_create_from_surface (mask_image);
3629           gdk_window_shape_combine_region (tree_view->priv->drag_highlight_window,
3630                                            mask_region, 0, 0);
3631
3632           cairo_region_destroy (mask_region);
3633           cairo_surface_destroy (mask_image);
3634         }
3635
3636       tree_view->priv->drag_column_window_state = arrow_type;
3637       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3638    }
3639   else
3640     {
3641       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3642       gdk_window_hide (tree_view->priv->drag_highlight_window);
3643       return;
3644     }
3645
3646   gdk_window_show (tree_view->priv->drag_highlight_window);
3647   gdk_window_raise (tree_view->priv->drag_highlight_window);
3648 }
3649
3650 static gboolean
3651 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3652                                     GdkEventMotion *event)
3653 {
3654   gint x;
3655   gint new_width;
3656   GtkTreeViewColumn *column;
3657   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3658
3659   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3660
3661   if (event->is_hint || event->window != gtk_widget_get_window (widget))
3662     gtk_widget_get_pointer (widget, &x, NULL);
3663   else
3664     x = event->x;
3665
3666   if (tree_view->priv->hadjustment)
3667     x += tree_view->priv->hadjustment->value;
3668
3669   new_width = gtk_tree_view_new_column_width (tree_view,
3670                                               tree_view->priv->drag_pos, &x);
3671   if (x != tree_view->priv->x_drag &&
3672       (new_width != column->fixed_width))
3673     {
3674       column->use_resized_width = TRUE;
3675       column->resized_width = new_width;
3676       if (column->expand)
3677         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3678       gtk_widget_queue_resize (widget);
3679     }
3680
3681   return FALSE;
3682 }
3683
3684
3685 static void
3686 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3687 {
3688   GtkTreeViewColumnReorder *reorder = NULL;
3689   GList *list;
3690   gint mouse_x;
3691
3692   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3693   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3694     {
3695       reorder = (GtkTreeViewColumnReorder *) list->data;
3696       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3697         break;
3698       reorder = NULL;
3699     }
3700
3701   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3702       return;*/
3703
3704   tree_view->priv->cur_reorder = reorder;
3705   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3706 }
3707
3708 static void
3709 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3710 {
3711   GdkRectangle visible_rect;
3712   gint y;
3713   gint offset;
3714
3715   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3716   y += tree_view->priv->dy;
3717
3718   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3719
3720   /* see if we are near the edge. */
3721   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3722   if (offset > 0)
3723     {
3724       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3725       if (offset < 0)
3726         return;
3727     }
3728
3729   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3730                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3731 }
3732
3733 static gboolean
3734 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3735 {
3736   GdkRectangle visible_rect;
3737   gint x;
3738   gint offset;
3739
3740   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3741
3742   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3743
3744   /* See if we are near the edge. */
3745   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3746   if (offset > 0)
3747     {
3748       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3749       if (offset < 0)
3750         return TRUE;
3751     }
3752   offset = offset/3;
3753
3754   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3755                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3756
3757   return TRUE;
3758
3759 }
3760
3761 static gboolean
3762 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3763                                   GdkEventMotion *event)
3764 {
3765   GtkAllocation allocation, button_allocation;
3766   GtkTreeView *tree_view = (GtkTreeView *) widget;
3767   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3768   gint x, y;
3769
3770   /* Sanity Check */
3771   if ((column == NULL) ||
3772       (event->window != tree_view->priv->drag_window))
3773     return FALSE;
3774
3775   /* Handle moving the header */
3776   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3777   gtk_widget_get_allocation (widget, &allocation);
3778   gtk_widget_get_allocation (column->button, &button_allocation);
3779   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3780              MAX (tree_view->priv->width, allocation.width) - button_allocation.width);
3781   gdk_window_move (tree_view->priv->drag_window, x, y);
3782
3783   /* autoscroll, if needed */
3784   gtk_tree_view_horizontal_autoscroll (tree_view);
3785   /* Update the current reorder position and arrow; */
3786   gtk_tree_view_update_current_reorder (tree_view);
3787
3788   return TRUE;
3789 }
3790
3791 static void
3792 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3793 {
3794   remove_scroll_timeout (tree_view);
3795   gtk_grab_remove (GTK_WIDGET (tree_view));
3796
3797   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3798     {
3799       GtkTreePath *tmp_path;
3800
3801       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3802
3803       /* The anchor path should be set to the start path */
3804       tmp_path = _gtk_tree_view_find_path (tree_view,
3805                                            tree_view->priv->rubber_band_start_tree,
3806                                            tree_view->priv->rubber_band_start_node);
3807
3808       if (tree_view->priv->anchor)
3809         gtk_tree_row_reference_free (tree_view->priv->anchor);
3810
3811       tree_view->priv->anchor =
3812         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3813                                           tree_view->priv->model,
3814                                           tmp_path);
3815
3816       gtk_tree_path_free (tmp_path);
3817
3818       /* ... and the cursor to the end path */
3819       tmp_path = _gtk_tree_view_find_path (tree_view,
3820                                            tree_view->priv->rubber_band_end_tree,
3821                                            tree_view->priv->rubber_band_end_node);
3822       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3823       gtk_tree_path_free (tmp_path);
3824
3825       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3826     }
3827
3828   /* Clear status variables */
3829   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3830   tree_view->priv->rubber_band_shift = 0;
3831   tree_view->priv->rubber_band_ctrl = 0;
3832
3833   tree_view->priv->rubber_band_start_node = NULL;
3834   tree_view->priv->rubber_band_start_tree = NULL;
3835   tree_view->priv->rubber_band_end_node = NULL;
3836   tree_view->priv->rubber_band_end_tree = NULL;
3837 }
3838
3839 static void
3840 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3841                                                  GtkRBTree   *start_tree,
3842                                                  GtkRBNode   *start_node,
3843                                                  GtkRBTree   *end_tree,
3844                                                  GtkRBNode   *end_node,
3845                                                  gboolean     select,
3846                                                  gboolean     skip_start,
3847                                                  gboolean     skip_end)
3848 {
3849   if (start_node == end_node)
3850     return;
3851
3852   /* We skip the first node and jump inside the loop */
3853   if (skip_start)
3854     goto skip_first;
3855
3856   do
3857     {
3858       /* Small optimization by assuming insensitive nodes are never
3859        * selected.
3860        */
3861       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3862         {
3863           GtkTreePath *path;
3864           gboolean selectable;
3865
3866           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3867           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3868           gtk_tree_path_free (path);
3869
3870           if (!selectable)
3871             goto node_not_selectable;
3872         }
3873
3874       if (select)
3875         {
3876           if (tree_view->priv->rubber_band_shift)
3877             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3878           else if (tree_view->priv->rubber_band_ctrl)
3879             {
3880               /* Toggle the selection state */
3881               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3882                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3883               else
3884                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3885             }
3886           else
3887             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3888         }
3889       else
3890         {
3891           /* Mirror the above */
3892           if (tree_view->priv->rubber_band_shift)
3893             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3894           else if (tree_view->priv->rubber_band_ctrl)
3895             {
3896               /* Toggle the selection state */
3897               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3898                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3899               else
3900                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3901             }
3902           else
3903             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3904         }
3905
3906       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3907
3908 node_not_selectable:
3909       if (start_node == end_node)
3910         break;
3911
3912 skip_first:
3913
3914       if (start_node->children)
3915         {
3916           start_tree = start_node->children;
3917           start_node = start_tree->root;
3918           while (start_node->left != start_tree->nil)
3919             start_node = start_node->left;
3920         }
3921       else
3922         {
3923           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3924
3925           if (!start_tree)
3926             /* Ran out of tree */
3927             break;
3928         }
3929
3930       if (skip_end && start_node == end_node)
3931         break;
3932     }
3933   while (TRUE);
3934 }
3935
3936 static void
3937 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3938 {
3939   GtkRBTree *start_tree, *end_tree;
3940   GtkRBNode *start_node, *end_node;
3941
3942   _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);
3943   _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);
3944
3945   /* Handle the start area first */
3946   if (!tree_view->priv->rubber_band_start_node)
3947     {
3948       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3949                                                        start_tree,
3950                                                        start_node,
3951                                                        end_tree,
3952                                                        end_node,
3953                                                        TRUE,
3954                                                        FALSE,
3955                                                        FALSE);
3956     }
3957   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3958            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3959     {
3960       /* New node is above the old one; selection became bigger */
3961       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3962                                                        start_tree,
3963                                                        start_node,
3964                                                        tree_view->priv->rubber_band_start_tree,
3965                                                        tree_view->priv->rubber_band_start_node,
3966                                                        TRUE,
3967                                                        FALSE,
3968                                                        TRUE);
3969     }
3970   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3971            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3972     {
3973       /* New node is below the old one; selection became smaller */
3974       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3975                                                        tree_view->priv->rubber_band_start_tree,
3976                                                        tree_view->priv->rubber_band_start_node,
3977                                                        start_tree,
3978                                                        start_node,
3979                                                        FALSE,
3980                                                        FALSE,
3981                                                        TRUE);
3982     }
3983
3984   tree_view->priv->rubber_band_start_tree = start_tree;
3985   tree_view->priv->rubber_band_start_node = start_node;
3986
3987   /* Next, handle the end area */
3988   if (!tree_view->priv->rubber_band_end_node)
3989     {
3990       /* In the event this happens, start_node was also NULL; this case is
3991        * handled above.
3992        */
3993     }
3994   else if (!end_node)
3995     {
3996       /* Find the last node in the tree */
3997       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3998                                &end_tree, &end_node);
3999
4000       /* Selection reached end of the tree */
4001       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4002                                                        tree_view->priv->rubber_band_end_tree,
4003                                                        tree_view->priv->rubber_band_end_node,
4004                                                        end_tree,
4005                                                        end_node,
4006                                                        TRUE,
4007                                                        TRUE,
4008                                                        FALSE);
4009     }
4010   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
4011            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4012     {
4013       /* New node is below the old one; selection became bigger */
4014       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4015                                                        tree_view->priv->rubber_band_end_tree,
4016                                                        tree_view->priv->rubber_band_end_node,
4017                                                        end_tree,
4018                                                        end_node,
4019                                                        TRUE,
4020                                                        TRUE,
4021                                                        FALSE);
4022     }
4023   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4024            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4025     {
4026       /* New node is above the old one; selection became smaller */
4027       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4028                                                        end_tree,
4029                                                        end_node,
4030                                                        tree_view->priv->rubber_band_end_tree,
4031                                                        tree_view->priv->rubber_band_end_node,
4032                                                        FALSE,
4033                                                        TRUE,
4034                                                        FALSE);
4035     }
4036
4037   tree_view->priv->rubber_band_end_tree = end_tree;
4038   tree_view->priv->rubber_band_end_node = end_node;
4039 }
4040
4041 static void
4042 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4043 {
4044   gint x, y;
4045   GdkRectangle old_area;
4046   GdkRectangle new_area;
4047   GdkRectangle common;
4048   cairo_region_t *invalid_region;
4049
4050   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4051   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4052   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4053   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4054
4055   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4056
4057   x = MAX (x, 0);
4058   y = MAX (y, 0) + tree_view->priv->dy;
4059
4060   new_area.x = MIN (tree_view->priv->press_start_x, x);
4061   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4062   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4063   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4064
4065   invalid_region = cairo_region_create_rectangle (&old_area);
4066   cairo_region_union_rectangle (invalid_region, &new_area);
4067
4068   gdk_rectangle_intersect (&old_area, &new_area, &common);
4069   if (common.width > 2 && common.height > 2)
4070     {
4071       cairo_region_t *common_region;
4072
4073       /* make sure the border is invalidated */
4074       common.x += 1;
4075       common.y += 1;
4076       common.width -= 2;
4077       common.height -= 2;
4078
4079       common_region = cairo_region_create_rectangle (&common);
4080
4081       cairo_region_subtract (invalid_region, common_region);
4082       cairo_region_destroy (common_region);
4083     }
4084
4085   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4086
4087   cairo_region_destroy (invalid_region);
4088
4089   tree_view->priv->rubber_band_x = x;
4090   tree_view->priv->rubber_band_y = y;
4091
4092   gtk_tree_view_update_rubber_band_selection (tree_view);
4093 }
4094
4095 static void
4096 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4097                                 GdkRectangle *area)
4098 {
4099   GtkStyle *style;
4100   cairo_t *cr;
4101   GdkRectangle rect;
4102   GdkRectangle rubber_rect;
4103
4104   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4105   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4106   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4107   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4108
4109   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4110     return;
4111
4112   cr = gdk_cairo_create (tree_view->priv->bin_window);
4113   cairo_set_line_width (cr, 1.0);
4114
4115   style = gtk_widget_get_style (GTK_WIDGET (tree_view));
4116
4117   cairo_set_source_rgba (cr,
4118                          style->fg[GTK_STATE_NORMAL].red / 65535.,
4119                          style->fg[GTK_STATE_NORMAL].green / 65535.,
4120                          style->fg[GTK_STATE_NORMAL].blue / 65535.,
4121                          .25);
4122
4123   gdk_cairo_rectangle (cr, &rect);
4124   cairo_clip (cr);
4125   cairo_paint (cr);
4126
4127   cairo_set_source_rgb (cr,
4128                         style->fg[GTK_STATE_NORMAL].red / 65535.,
4129                         style->fg[GTK_STATE_NORMAL].green / 65535.,
4130                         style->fg[GTK_STATE_NORMAL].blue / 65535.);
4131
4132   cairo_rectangle (cr,
4133                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4134                    rubber_rect.width - 1, rubber_rect.height - 1);
4135   cairo_stroke (cr);
4136
4137   cairo_destroy (cr);
4138 }
4139
4140 static gboolean
4141 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4142                                  GdkEventMotion *event)
4143 {
4144   GtkTreeView *tree_view;
4145   GtkRBTree *tree;
4146   GtkRBNode *node;
4147   gint new_y;
4148
4149   tree_view = (GtkTreeView *) widget;
4150
4151   if (tree_view->priv->tree == NULL)
4152     return FALSE;
4153
4154   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4155     {
4156       gtk_grab_add (GTK_WIDGET (tree_view));
4157       gtk_tree_view_update_rubber_band (tree_view);
4158
4159       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4160     }
4161   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4162     {
4163       gtk_tree_view_update_rubber_band (tree_view);
4164
4165       add_scroll_timeout (tree_view);
4166     }
4167
4168   /* only check for an initiated drag when a button is pressed */
4169   if (tree_view->priv->pressed_button >= 0
4170       && !tree_view->priv->rubber_band_status)
4171     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4172
4173   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4174   if (new_y < 0)
4175     new_y = 0;
4176
4177   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4178
4179   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4180   if ((tree_view->priv->button_pressed_node != NULL) &&
4181       (tree_view->priv->button_pressed_node != node))
4182     node = NULL;
4183
4184   tree_view->priv->event_last_x = event->x;
4185   tree_view->priv->event_last_y = event->y;
4186
4187   prelight_or_select (tree_view, tree, node, event->x, event->y);
4188
4189   return TRUE;
4190 }
4191
4192 static gboolean
4193 gtk_tree_view_motion (GtkWidget      *widget,
4194                       GdkEventMotion *event)
4195 {
4196   GtkTreeView *tree_view;
4197
4198   tree_view = (GtkTreeView *) widget;
4199
4200   /* Resizing a column */
4201   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4202     return gtk_tree_view_motion_resize_column (widget, event);
4203
4204   /* Drag column */
4205   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4206     return gtk_tree_view_motion_drag_column (widget, event);
4207
4208   /* Sanity check it */
4209   if (event->window == tree_view->priv->bin_window)
4210     return gtk_tree_view_motion_bin_window (widget, event);
4211
4212   return FALSE;
4213 }
4214
4215 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4216  * the tree is empty.
4217  */
4218 static void
4219 invalidate_empty_focus (GtkTreeView *tree_view)
4220 {
4221   GdkRectangle area;
4222
4223   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4224     return;
4225
4226   area.x = 0;
4227   area.y = 0;
4228   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4229   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4230 }
4231
4232 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4233  * is empty.
4234  */
4235 static void
4236 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4237 {
4238   GtkWidget *widget = GTK_WIDGET (tree_view);
4239   gint w, h;
4240
4241   if (!gtk_widget_has_focus (widget))
4242     return;
4243
4244   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4245
4246   w -= 2;
4247   h -= 2;
4248
4249   if (w > 0 && h > 0)
4250     gtk_paint_focus (gtk_widget_get_style (widget),
4251                      tree_view->priv->bin_window,
4252                      gtk_widget_get_state (widget),
4253                      clip_area,
4254                      widget,
4255                      NULL,
4256                      1, 1, w, h);
4257 }
4258
4259 typedef enum {
4260   GTK_TREE_VIEW_GRID_LINE,
4261   GTK_TREE_VIEW_TREE_LINE,
4262   GTK_TREE_VIEW_FOREGROUND_LINE
4263 } GtkTreeViewLineType;
4264
4265 static void
4266 gtk_tree_view_draw_line (GtkTreeView         *tree_view,
4267                          GdkWindow           *window,
4268                          GtkTreeViewLineType  type,
4269                          int                  x1,
4270                          int                  y1,
4271                          int                  x2,
4272                          int                  y2)
4273 {
4274   cairo_t *cr;
4275
4276   cr = gdk_cairo_create (window);
4277
4278   switch (type)
4279     {
4280     case GTK_TREE_VIEW_TREE_LINE:
4281       cairo_set_source_rgb (cr, 0, 0, 0);
4282       cairo_set_line_width (cr, tree_view->priv->tree_line_width);
4283       if (tree_view->priv->tree_line_dashes[0])
4284         cairo_set_dash (cr,
4285                         tree_view->priv->tree_line_dashes,
4286                         2, 0.5);
4287       break;
4288     case GTK_TREE_VIEW_GRID_LINE:
4289       cairo_set_source_rgb (cr, 0, 0, 0);
4290       cairo_set_line_width (cr, tree_view->priv->grid_line_width);
4291       if (tree_view->priv->grid_line_dashes[0])
4292         cairo_set_dash (cr,
4293                         tree_view->priv->grid_line_dashes,
4294                         2, 0.5);
4295       break;
4296     default:
4297       g_assert_not_reached ();
4298       /* fall through */
4299     case GTK_TREE_VIEW_FOREGROUND_LINE:
4300       cairo_set_line_width (cr, 1.0);
4301       gdk_cairo_set_source_color (cr,
4302                                   &gtk_widget_get_style (GTK_WIDGET (tree_view))->fg[gtk_widget_get_state (GTK_WIDGET (tree_view))]);
4303       break;
4304     }
4305
4306   cairo_move_to (cr, x1 + 0.5, y1 + 0.5);
4307   cairo_line_to (cr, x2 + 0.5, y2 + 0.5);
4308   cairo_stroke (cr);
4309
4310   cairo_destroy (cr);
4311 }
4312
4313 static void
4314 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4315                                GdkEventExpose *event,
4316                                gint            n_visible_columns)
4317 {
4318   GList *list = tree_view->priv->columns;
4319   gint i = 0;
4320   gint current_x = 0;
4321
4322   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4323       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4324     return;
4325
4326   /* Only draw the lines for visible rows and columns */
4327   for (list = tree_view->priv->columns; list; list = list->next, i++)
4328     {
4329       GtkTreeViewColumn *column = list->data;
4330
4331       /* We don't want a line for the last column */
4332       if (i == n_visible_columns - 1)
4333         break;
4334
4335       if (! column->visible)
4336         continue;
4337
4338       current_x += column->width;
4339
4340       gtk_tree_view_draw_line (tree_view, event->window,
4341                                GTK_TREE_VIEW_GRID_LINE,
4342                                current_x - 1, 0,
4343                                current_x - 1, tree_view->priv->height);
4344     }
4345 }
4346
4347 /* Warning: Very scary function.
4348  * Modify at your own risk
4349  *
4350  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4351  * FIXME: It's not...
4352  */
4353 static gboolean
4354 gtk_tree_view_bin_expose (GtkWidget      *widget,
4355                           GdkEventExpose *event)
4356 {
4357   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4358   GtkTreePath *path;
4359   GtkStyle *style;
4360   GtkRBTree *tree;
4361   GList *list;
4362   GtkRBNode *node;
4363   GtkRBNode *cursor = NULL;
4364   GtkRBTree *cursor_tree = NULL;
4365   GtkRBNode *drag_highlight = NULL;
4366   GtkRBTree *drag_highlight_tree = NULL;
4367   GtkTreeIter iter;
4368   gint new_y;
4369   gint y_offset, cell_offset;
4370   gint max_height;
4371   gint depth;
4372   GdkRectangle background_area;
4373   GdkRectangle cell_area;
4374   guint flags;
4375   gint highlight_x;
4376   gint expander_cell_width;
4377   gint bin_window_width;
4378   gint bin_window_height;
4379   GtkTreePath *cursor_path;
4380   GtkTreePath *drag_dest_path;
4381   GList *first_column, *last_column;
4382   gint vertical_separator;
4383   gint horizontal_separator;
4384   gint focus_line_width;
4385   gboolean allow_rules;
4386   gboolean has_special_cell;
4387   gboolean rtl;
4388   gint n_visible_columns;
4389   gint pointer_x, pointer_y;
4390   gint grid_line_width;
4391   gboolean got_pointer = FALSE;
4392   gboolean draw_vgrid_lines, draw_hgrid_lines;
4393   cairo_t *cr;
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   cr = gdk_cairo_create (event->window);
4415   gdk_cairo_region (cr, event->region);
4416   cairo_clip (cr);
4417
4418   validate_visible_area (tree_view);
4419
4420   style = gtk_widget_get_style (widget);
4421
4422   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4423
4424   if (new_y < 0)
4425     new_y = 0;
4426   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4427   gdk_drawable_get_size (tree_view->priv->bin_window,
4428                          &bin_window_width, &bin_window_height);
4429
4430   if (tree_view->priv->height < bin_window_height)
4431     {
4432       gtk_paint_flat_box (style,
4433                           event->window,
4434                           gtk_widget_get_state (widget),
4435                           GTK_SHADOW_NONE,
4436                           &event->area,
4437                           widget,
4438                           "cell_even",
4439                           0, tree_view->priv->height,
4440                           bin_window_width,
4441                           bin_window_height - tree_view->priv->height);
4442     }
4443
4444   if (node == NULL)
4445     {
4446       cairo_destroy (cr);
4447       return TRUE;
4448     }
4449
4450   /* find the path for the node */
4451   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4452                                    tree,
4453                                    node);
4454   gtk_tree_model_get_iter (tree_view->priv->model,
4455                            &iter,
4456                            path);
4457   depth = gtk_tree_path_get_depth (path);
4458   gtk_tree_path_free (path);
4459
4460   cursor_path = NULL;
4461   drag_dest_path = NULL;
4462
4463   if (tree_view->priv->cursor)
4464     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4465
4466   if (cursor_path)
4467     _gtk_tree_view_find_node (tree_view, cursor_path,
4468                               &cursor_tree, &cursor);
4469
4470   if (tree_view->priv->drag_dest_row)
4471     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4472
4473   if (drag_dest_path)
4474     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4475                               &drag_highlight_tree, &drag_highlight);
4476
4477   draw_vgrid_lines =
4478     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4479     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4480   draw_hgrid_lines =
4481     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4482     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4483
4484   if (draw_vgrid_lines || draw_hgrid_lines)
4485     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4486
4487   n_visible_columns = 0;
4488   for (list = tree_view->priv->columns; list; list = list->next)
4489     {
4490       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4491         continue;
4492       n_visible_columns ++;
4493     }
4494
4495   /* Find the last column */
4496   for (last_column = g_list_last (tree_view->priv->columns);
4497        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4498        last_column = last_column->prev)
4499     ;
4500
4501   /* and the first */
4502   for (first_column = g_list_first (tree_view->priv->columns);
4503        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4504        first_column = first_column->next)
4505     ;
4506
4507   /* Actually process the expose event.  To do this, we want to
4508    * start at the first node of the event, and walk the tree in
4509    * order, drawing each successive node.
4510    */
4511
4512   do
4513     {
4514       gboolean parity;
4515       gboolean is_separator = FALSE;
4516       gboolean is_first = FALSE;
4517       gboolean is_last = FALSE;
4518
4519       is_separator = row_is_separator (tree_view, &iter, NULL);
4520
4521       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4522
4523       cell_offset = 0;
4524       highlight_x = 0; /* should match x coord of first cell */
4525       expander_cell_width = 0;
4526
4527       background_area.y = y_offset + event->area.y;
4528       background_area.height = max_height;
4529
4530       flags = 0;
4531
4532       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4533         flags |= GTK_CELL_RENDERER_PRELIT;
4534
4535       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4536         flags |= GTK_CELL_RENDERER_SELECTED;
4537
4538       parity = _gtk_rbtree_node_find_parity (tree, node);
4539
4540       /* we *need* to set cell data on all cells before the call
4541        * to _has_special_cell, else _has_special_cell() does not
4542        * return a correct value.
4543        */
4544       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4545            list;
4546            list = (rtl ? list->prev : list->next))
4547         {
4548           GtkTreeViewColumn *column = list->data;
4549           gtk_tree_view_column_cell_set_cell_data (column,
4550                                                    tree_view->priv->model,
4551                                                    &iter,
4552                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4553                                                    node->children?TRUE:FALSE);
4554         }
4555
4556       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4557
4558       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4559            list;
4560            list = (rtl ? list->prev : list->next))
4561         {
4562           GtkTreeViewColumn *column = list->data;
4563           const gchar *detail = NULL;
4564           gchar new_detail[128];
4565           GtkStateType state;
4566
4567           if (!column->visible)
4568             continue;
4569
4570           if (cell_offset > event->area.x + event->area.width ||
4571               cell_offset + column->width < event->area.x)
4572             {
4573               cell_offset += column->width;
4574               continue;
4575             }
4576
4577           if (column->show_sort_indicator)
4578             flags |= GTK_CELL_RENDERER_SORTED;
4579           else
4580             flags &= ~GTK_CELL_RENDERER_SORTED;
4581
4582           if (cursor == node)
4583             flags |= GTK_CELL_RENDERER_FOCUSED;
4584           else
4585             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4586
4587           background_area.x = cell_offset;
4588           background_area.width = column->width;
4589
4590           cell_area = background_area;
4591           cell_area.y += vertical_separator / 2;
4592           cell_area.x += horizontal_separator / 2;
4593           cell_area.height -= vertical_separator;
4594           cell_area.width -= horizontal_separator;
4595
4596           if (draw_vgrid_lines)
4597             {
4598               if (list == first_column)
4599                 {
4600                   cell_area.width -= grid_line_width / 2;
4601                 }
4602               else if (list == last_column)
4603                 {
4604                   cell_area.x += grid_line_width / 2;
4605                   cell_area.width -= grid_line_width / 2;
4606                 }
4607               else
4608                 {
4609                   cell_area.x += grid_line_width / 2;
4610                   cell_area.width -= grid_line_width;
4611                 }
4612             }
4613
4614           if (draw_hgrid_lines)
4615             {
4616               cell_area.y += grid_line_width / 2;
4617               cell_area.height -= grid_line_width;
4618             }
4619
4620           if (cairo_region_contains_rectangle (event->region, &background_area) == CAIRO_REGION_OVERLAP_OUT)
4621             {
4622               cell_offset += column->width;
4623               continue;
4624             }
4625
4626           gtk_tree_view_column_cell_set_cell_data (column,
4627                                                    tree_view->priv->model,
4628                                                    &iter,
4629                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4630                                                    node->children?TRUE:FALSE);
4631
4632           /* Select the detail for drawing the cell.  relevant
4633            * factors are parity, sortedness, and whether to
4634            * display rules.
4635            */
4636           if (allow_rules && tree_view->priv->has_rules)
4637             {
4638               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4639                   n_visible_columns >= 3)
4640                 {
4641                   if (parity)
4642                     detail = "cell_odd_ruled_sorted";
4643                   else
4644                     detail = "cell_even_ruled_sorted";
4645                 }
4646               else
4647                 {
4648                   if (parity)
4649                     detail = "cell_odd_ruled";
4650                   else
4651                     detail = "cell_even_ruled";
4652                 }
4653             }
4654           else
4655             {
4656               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4657                   n_visible_columns >= 3)
4658                 {
4659                   if (parity)
4660                     detail = "cell_odd_sorted";
4661                   else
4662                     detail = "cell_even_sorted";
4663                 }
4664               else
4665                 {
4666                   if (parity)
4667                     detail = "cell_odd";
4668                   else
4669                     detail = "cell_even";
4670                 }
4671             }
4672
4673           g_assert (detail);
4674
4675           if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
4676             state = GTK_STATE_INSENSITIVE;
4677           else if (flags & GTK_CELL_RENDERER_SELECTED)
4678             state = GTK_STATE_SELECTED;
4679           else
4680             state = GTK_STATE_NORMAL;
4681
4682           /* Draw background */
4683           is_first = (rtl ? !list->next : !list->prev);
4684           is_last = (rtl ? !list->prev : !list->next);
4685
4686           /* (I don't like the snprintfs either, but couldn't find a
4687            * less messy way).
4688            */
4689           if (is_first && is_last)
4690             g_snprintf (new_detail, 127, "%s", detail);
4691           else if (is_first)
4692             g_snprintf (new_detail, 127, "%s_start", detail);
4693           else if (is_last)
4694             g_snprintf (new_detail, 127, "%s_end", detail);
4695           else
4696             g_snprintf (new_detail, 127, "%s_middle", detail);
4697
4698           gtk_paint_flat_box (style,
4699                               event->window,
4700                               state,
4701                               GTK_SHADOW_NONE,
4702                               &event->area,
4703                               widget,
4704                               new_detail,
4705                               background_area.x,
4706                               background_area.y,
4707                               background_area.width,
4708                               background_area.height);
4709
4710           if (gtk_tree_view_is_expander_column (tree_view, column))
4711             {
4712               if (!rtl)
4713                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4714               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4715
4716               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4717                 {
4718                   if (!rtl)
4719                     cell_area.x += depth * tree_view->priv->expander_size;
4720                   cell_area.width -= depth * tree_view->priv->expander_size;
4721                 }
4722
4723               /* If we have an expander column, the highlight underline
4724                * starts with that column, so that it indicates which
4725                * level of the tree we're dropping at.
4726                */
4727               highlight_x = cell_area.x;
4728               expander_cell_width = cell_area.width;
4729
4730               if (is_separator)
4731                 gtk_paint_hline (style,
4732                                  event->window,
4733                                  state,
4734                                  &cell_area,
4735                                  widget,
4736                                  NULL,
4737                                  cell_area.x,
4738                                  cell_area.x + cell_area.width,
4739                                  cell_area.y + cell_area.height / 2);
4740               else
4741                 _gtk_tree_view_column_cell_render (column,
4742                                                    cr,
4743                                                    &background_area,
4744                                                    &cell_area,
4745                                                    flags);
4746               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4747                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4748                 {
4749                   if (!got_pointer)
4750                     {
4751                       gdk_window_get_pointer (tree_view->priv->bin_window,
4752                                               &pointer_x, &pointer_y, NULL);
4753                       got_pointer = TRUE;
4754                     }
4755
4756                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4757                                             tree,
4758                                             node,
4759                                             pointer_x, pointer_y);
4760                 }
4761             }
4762           else
4763             {
4764               if (is_separator)
4765                 gtk_paint_hline (style,
4766                                  event->window,
4767                                  state,
4768                                  &cell_area,
4769                                  widget,
4770                                  NULL,
4771                                  cell_area.x,
4772                                  cell_area.x + cell_area.width,
4773                                  cell_area.y + cell_area.height / 2);
4774               else
4775                 _gtk_tree_view_column_cell_render (column,
4776                                                    cr,
4777                                                    &background_area,
4778                                                    &cell_area,
4779                                                    flags);
4780             }
4781
4782           if (draw_hgrid_lines)
4783             {
4784               if (background_area.y > 0)
4785                 gtk_tree_view_draw_line (tree_view, event->window,
4786                                          GTK_TREE_VIEW_GRID_LINE,
4787                                          background_area.x, background_area.y,
4788                                          background_area.x + background_area.width,
4789                                          background_area.y);
4790
4791               if (y_offset + max_height >= event->area.height)
4792                 gtk_tree_view_draw_line (tree_view, event->window,
4793                                          GTK_TREE_VIEW_GRID_LINE,
4794                                          background_area.x, background_area.y + max_height,
4795                                          background_area.x + background_area.width,
4796                                          background_area.y + max_height);
4797             }
4798
4799           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4800               tree_view->priv->tree_lines_enabled)
4801             {
4802               gint x = background_area.x;
4803               gint mult = rtl ? -1 : 1;
4804               gint y0 = background_area.y;
4805               gint y1 = background_area.y + background_area.height/2;
4806               gint y2 = background_area.y + background_area.height;
4807
4808               if (rtl)
4809                 x += background_area.width - 1;
4810
4811               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4812                   && depth > 1)
4813                 {
4814                   gtk_tree_view_draw_line (tree_view, event->window,
4815                                            GTK_TREE_VIEW_TREE_LINE,
4816                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4817                                            y1,
4818                                            x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4819                                            y1);
4820                 }
4821               else if (depth > 1)
4822                 {
4823                   gtk_tree_view_draw_line (tree_view, event->window,
4824                                            GTK_TREE_VIEW_TREE_LINE,
4825                                            x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4826                                            y1,
4827                                            x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4828                                            y1);
4829                 }
4830
4831               if (depth > 1)
4832                 {
4833                   gint i;
4834                   GtkRBNode *tmp_node;
4835                   GtkRBTree *tmp_tree;
4836
4837                   if (!_gtk_rbtree_next (tree, node))
4838                     gtk_tree_view_draw_line (tree_view, event->window,
4839                                              GTK_TREE_VIEW_TREE_LINE,
4840                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4841                                              y0,
4842                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4843                                              y1);
4844                   else
4845                     gtk_tree_view_draw_line (tree_view, event->window,
4846                                              GTK_TREE_VIEW_TREE_LINE,
4847                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4848                                              y0,
4849                                              x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4850                                              y2);
4851
4852                   tmp_node = tree->parent_node;
4853                   tmp_tree = tree->parent_tree;
4854
4855                   for (i = depth - 2; i > 0; i--)
4856                     {
4857                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4858                         gtk_tree_view_draw_line (tree_view, event->window,
4859                                                  GTK_TREE_VIEW_TREE_LINE,
4860                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4861                                                  y0,
4862                                                  x + tree_view->priv->expander_size * (i - 0.5) * mult,
4863                                                  y2);
4864
4865                       tmp_node = tmp_tree->parent_node;
4866                       tmp_tree = tmp_tree->parent_tree;
4867                     }
4868                 }
4869             }
4870
4871           if (node == cursor && has_special_cell &&
4872               ((column == tree_view->priv->focus_column &&
4873                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4874                 gtk_widget_has_focus (widget)) ||
4875                (column == tree_view->priv->edited_column)))
4876             {
4877               _gtk_tree_view_column_cell_draw_focus (column,
4878                                                      cr,
4879                                                      &background_area,
4880                                                      &cell_area,
4881                                                      flags);
4882             }
4883
4884           cell_offset += column->width;
4885         }
4886
4887       if (node == drag_highlight)
4888         {
4889           /* Draw indicator for the drop
4890            */
4891           gint highlight_y = -1;
4892           GtkRBTree *tree = NULL;
4893           GtkRBNode *node = NULL;
4894           gint width;
4895
4896           switch (tree_view->priv->drag_dest_pos)
4897             {
4898             case GTK_TREE_VIEW_DROP_BEFORE:
4899               highlight_y = background_area.y - 1;
4900               if (highlight_y < 0)
4901                       highlight_y = 0;
4902               break;
4903
4904             case GTK_TREE_VIEW_DROP_AFTER:
4905               highlight_y = background_area.y + background_area.height - 1;
4906               break;
4907
4908             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4909             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4910               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4911
4912               if (tree == NULL)
4913                 break;
4914               gdk_drawable_get_size (tree_view->priv->bin_window,
4915                                      &width, NULL);
4916
4917               gtk_paint_focus (style,
4918                                tree_view->priv->bin_window,
4919                                gtk_widget_get_state (widget),
4920                                &event->area,
4921                                widget,
4922                                (is_first
4923                                 ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4924                                 : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4925                                 0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4926                                    - focus_line_width / 2,
4927                                 width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4928                                        - focus_line_width + 1);
4929               break;
4930             }
4931
4932           if (highlight_y >= 0)
4933             {
4934               gtk_tree_view_draw_line (tree_view, event->window,
4935                                        GTK_TREE_VIEW_FOREGROUND_LINE,
4936                                        rtl ? highlight_x + expander_cell_width : highlight_x,
4937                                        highlight_y,
4938                                        rtl ? 0 : bin_window_width,
4939                                        highlight_y);
4940             }
4941         }
4942
4943       /* draw the big row-spanning focus rectangle, if needed */
4944       if (!has_special_cell && node == cursor &&
4945           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4946           gtk_widget_has_focus (widget))
4947         {
4948           gint tmp_y, tmp_height;
4949           gint width;
4950           GtkStateType focus_rect_state;
4951
4952           focus_rect_state =
4953             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4954             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4955              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4956               GTK_STATE_NORMAL));
4957
4958           gdk_drawable_get_size (tree_view->priv->bin_window,
4959                                  &width, NULL);
4960
4961           if (draw_hgrid_lines)
4962             {
4963               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4964               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4965             }
4966           else
4967             {
4968               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4969               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4970             }
4971
4972           gtk_paint_focus (style,
4973                            tree_view->priv->bin_window,
4974                            focus_rect_state,
4975                            &event->area,
4976                            widget,
4977                            (is_first
4978                             ? (is_last ? "treeview" : "treeview-left" )
4979                             : (is_last ? "treeview-right" : "treeview-middle" )),
4980                            0, tmp_y,
4981                            width, tmp_height);
4982         }
4983
4984       y_offset += max_height;
4985       if (node->children)
4986         {
4987           GtkTreeIter parent = iter;
4988           gboolean has_child;
4989
4990           tree = node->children;
4991           node = tree->root;
4992
4993           g_assert (node != tree->nil);
4994
4995           while (node->left != tree->nil)
4996             node = node->left;
4997           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4998                                                     &iter,
4999                                                     &parent);
5000           depth++;
5001
5002           /* Sanity Check! */
5003           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
5004         }
5005       else
5006         {
5007           gboolean done = FALSE;
5008
5009           do
5010             {
5011               node = _gtk_rbtree_next (tree, node);
5012               if (node != NULL)
5013                 {
5014                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5015                   done = TRUE;
5016
5017                   /* Sanity Check! */
5018                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
5019                 }
5020               else
5021                 {
5022                   GtkTreeIter parent_iter = iter;
5023                   gboolean has_parent;
5024
5025                   node = tree->parent_node;
5026                   tree = tree->parent_tree;
5027                   if (tree == NULL)
5028                     /* we should go to done to free some memory */
5029                     goto done;
5030                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5031                                                            &iter,
5032                                                            &parent_iter);
5033                   depth--;
5034
5035                   /* Sanity check */
5036                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
5037                 }
5038             }
5039           while (!done);
5040         }
5041     }
5042   while (y_offset < event->area.height);
5043
5044 done:
5045   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
5046
5047   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5048     {
5049       GdkRectangle rectangle;
5050       gint n_rectangles;
5051
5052       n_rectangles = cairo_region_num_rectangles (event->region);
5053
5054       while (n_rectangles--)
5055         {
5056           cairo_region_get_rectangle (event->region, n_rectangles, &rectangle);
5057           gtk_tree_view_paint_rubber_band (tree_view, &rectangle);
5058         }
5059     }
5060
5061   if (cursor_path)
5062     gtk_tree_path_free (cursor_path);
5063
5064   if (drag_dest_path)
5065     gtk_tree_path_free (drag_dest_path);
5066
5067   cairo_destroy (cr);
5068
5069   return FALSE;
5070 }
5071
5072 static gboolean
5073 gtk_tree_view_expose (GtkWidget      *widget,
5074                       GdkEventExpose *event)
5075 {
5076   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5077
5078   if (event->window == tree_view->priv->bin_window)
5079     {
5080       gboolean retval;
5081       GList *tmp_list;
5082
5083       retval = gtk_tree_view_bin_expose (widget, event);
5084
5085       /* We can't just chain up to Container::expose as it will try to send the
5086        * event to the headers, so we handle propagating it to our children
5087        * (eg. widgets being edited) ourselves.
5088        */
5089       tmp_list = tree_view->priv->children;
5090       while (tmp_list)
5091         {
5092           GtkTreeViewChild *child = tmp_list->data;
5093           tmp_list = tmp_list->next;
5094
5095           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5096         }
5097
5098       return retval;
5099     }
5100
5101   else if (event->window == tree_view->priv->header_window)
5102     {
5103       GList *list;
5104
5105       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5106         {
5107           GtkTreeViewColumn *column = list->data;
5108
5109           if (column == tree_view->priv->drag_column)
5110             continue;
5111
5112           if (column->visible)
5113             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5114                                             column->button,
5115                                             event);
5116         }
5117     }
5118   else if (event->window == tree_view->priv->drag_window)
5119     {
5120       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5121                                       tree_view->priv->drag_column->button,
5122                                       event);
5123     }
5124   return TRUE;
5125 }
5126
5127 enum
5128 {
5129   DROP_HOME,
5130   DROP_RIGHT,
5131   DROP_LEFT,
5132   DROP_END
5133 };
5134
5135 /* returns 0x1 when no column has been found -- yes it's hackish */
5136 static GtkTreeViewColumn *
5137 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5138                                GtkTreeViewColumn *column,
5139                                gint               drop_position)
5140 {
5141   GtkTreeViewColumn *left_column = NULL;
5142   GtkTreeViewColumn *cur_column = NULL;
5143   GList *tmp_list;
5144
5145   if (!column->reorderable)
5146     return (GtkTreeViewColumn *)0x1;
5147
5148   switch (drop_position)
5149     {
5150       case DROP_HOME:
5151         /* find first column where we can drop */
5152         tmp_list = tree_view->priv->columns;
5153         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5154           return (GtkTreeViewColumn *)0x1;
5155
5156         while (tmp_list)
5157           {
5158             g_assert (tmp_list);
5159
5160             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5161             tmp_list = tmp_list->next;
5162
5163             if (left_column && left_column->visible == FALSE)
5164               continue;
5165
5166             if (!tree_view->priv->column_drop_func)
5167               return left_column;
5168
5169             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5170               {
5171                 left_column = cur_column;
5172                 continue;
5173               }
5174
5175             return left_column;
5176           }
5177
5178         if (!tree_view->priv->column_drop_func)
5179           return left_column;
5180
5181         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5182           return left_column;
5183         else
5184           return (GtkTreeViewColumn *)0x1;
5185         break;
5186
5187       case DROP_RIGHT:
5188         /* find first column after column where we can drop */
5189         tmp_list = tree_view->priv->columns;
5190
5191         for (; tmp_list; tmp_list = tmp_list->next)
5192           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5193             break;
5194
5195         if (!tmp_list || !tmp_list->next)
5196           return (GtkTreeViewColumn *)0x1;
5197
5198         tmp_list = tmp_list->next;
5199         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5200         tmp_list = tmp_list->next;
5201
5202         while (tmp_list)
5203           {
5204             g_assert (tmp_list);
5205
5206             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5207             tmp_list = tmp_list->next;
5208
5209             if (left_column && left_column->visible == FALSE)
5210               {
5211                 left_column = cur_column;
5212                 if (tmp_list)
5213                   tmp_list = tmp_list->next;
5214                 continue;
5215               }
5216
5217             if (!tree_view->priv->column_drop_func)
5218               return left_column;
5219
5220             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5221               {
5222                 left_column = cur_column;
5223                 continue;
5224               }
5225
5226             return left_column;
5227           }
5228
5229         if (!tree_view->priv->column_drop_func)
5230           return left_column;
5231
5232         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5233           return left_column;
5234         else
5235           return (GtkTreeViewColumn *)0x1;
5236         break;
5237
5238       case DROP_LEFT:
5239         /* find first column before column where we can drop */
5240         tmp_list = tree_view->priv->columns;
5241
5242         for (; tmp_list; tmp_list = tmp_list->next)
5243           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5244             break;
5245
5246         if (!tmp_list || !tmp_list->prev)
5247           return (GtkTreeViewColumn *)0x1;
5248
5249         tmp_list = tmp_list->prev;
5250         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5251         tmp_list = tmp_list->prev;
5252
5253         while (tmp_list)
5254           {
5255             g_assert (tmp_list);
5256
5257             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5258
5259             if (left_column && !left_column->visible)
5260               {
5261                 /*if (!tmp_list->prev)
5262                   return (GtkTreeViewColumn *)0x1;
5263                   */
5264 /*
5265                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5266                 tmp_list = tmp_list->prev->prev;
5267                 continue;*/
5268
5269                 cur_column = left_column;
5270                 if (tmp_list)
5271                   tmp_list = tmp_list->prev;
5272                 continue;
5273               }
5274
5275             if (!tree_view->priv->column_drop_func)
5276               return left_column;
5277
5278             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5279               return left_column;
5280
5281             cur_column = left_column;
5282             tmp_list = tmp_list->prev;
5283           }
5284
5285         if (!tree_view->priv->column_drop_func)
5286           return NULL;
5287
5288         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5289           return NULL;
5290         else
5291           return (GtkTreeViewColumn *)0x1;
5292         break;
5293
5294       case DROP_END:
5295         /* same as DROP_HOME case, but doing it backwards */
5296         tmp_list = g_list_last (tree_view->priv->columns);
5297         cur_column = NULL;
5298
5299         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5300           return (GtkTreeViewColumn *)0x1;
5301
5302         while (tmp_list)
5303           {
5304             g_assert (tmp_list);
5305
5306             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5307
5308             if (left_column && !left_column->visible)
5309               {
5310                 cur_column = left_column;
5311                 tmp_list = tmp_list->prev;
5312               }
5313
5314             if (!tree_view->priv->column_drop_func)
5315               return left_column;
5316
5317             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5318               return left_column;
5319
5320             cur_column = left_column;
5321             tmp_list = tmp_list->prev;
5322           }
5323
5324         if (!tree_view->priv->column_drop_func)
5325           return NULL;
5326
5327         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5328           return NULL;
5329         else
5330           return (GtkTreeViewColumn *)0x1;
5331         break;
5332     }
5333
5334   return (GtkTreeViewColumn *)0x1;
5335 }
5336
5337 static gboolean
5338 gtk_tree_view_key_press (GtkWidget   *widget,
5339                          GdkEventKey *event)
5340 {
5341   GtkTreeView *tree_view = (GtkTreeView *) widget;
5342
5343   if (tree_view->priv->rubber_band_status)
5344     {
5345       if (event->keyval == GDK_KEY_Escape)
5346         gtk_tree_view_stop_rubber_band (tree_view);
5347
5348       return TRUE;
5349     }
5350
5351   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5352     {
5353       if (event->keyval == GDK_KEY_Escape)
5354         {
5355           tree_view->priv->cur_reorder = NULL;
5356           gtk_tree_view_button_release_drag_column (widget, NULL);
5357         }
5358       return TRUE;
5359     }
5360
5361   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5362     {
5363       GList *focus_column;
5364       gboolean rtl;
5365
5366       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5367
5368       for (focus_column = tree_view->priv->columns;
5369            focus_column;
5370            focus_column = focus_column->next)
5371         {
5372           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5373
5374           if (gtk_widget_has_focus (column->button))
5375             break;
5376         }
5377
5378       if (focus_column &&
5379           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5380           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5381            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right))
5382         {
5383           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5384
5385           if (!column->resizable)
5386             {
5387               gtk_widget_error_bell (widget);
5388               return TRUE;
5389             }
5390
5391           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5392               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5393             {
5394               GtkRequisition button_req;
5395               gint old_width = column->resized_width;
5396
5397               gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
5398
5399               column->resized_width = MAX (column->resized_width,
5400                                            column->width);
5401               column->resized_width -= 2;
5402               if (column->resized_width < 0)
5403                 column->resized_width = 0;
5404
5405               if (column->min_width == -1)
5406                 column->resized_width = MAX (button_req.width,
5407                                              column->resized_width);
5408               else
5409                 {
5410                   column->resized_width = MAX (column->min_width,
5411                                                column->resized_width);
5412                 }
5413
5414               if (column->max_width != -1)
5415                 column->resized_width = MIN (column->resized_width,
5416                                              column->max_width);
5417
5418               column->use_resized_width = TRUE;
5419
5420               if (column->resized_width != old_width)
5421                 gtk_widget_queue_resize (widget);
5422               else
5423                 gtk_widget_error_bell (widget);
5424             }
5425           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5426                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5427             {
5428               gint old_width = column->resized_width;
5429
5430               column->resized_width = MAX (column->resized_width,
5431                                            column->width);
5432               column->resized_width += 2;
5433
5434               if (column->max_width != -1)
5435                 column->resized_width = MIN (column->resized_width,
5436                                              column->max_width);
5437
5438               column->use_resized_width = TRUE;
5439
5440               if (column->resized_width != old_width)
5441                 gtk_widget_queue_resize (widget);
5442               else
5443                 gtk_widget_error_bell (widget);
5444             }
5445
5446           return TRUE;
5447         }
5448
5449       if (focus_column &&
5450           (event->state & GDK_MOD1_MASK) &&
5451           (event->keyval == GDK_KEY_Left || event->keyval == GDK_KEY_KP_Left
5452            || event->keyval == GDK_KEY_Right || event->keyval == GDK_KEY_KP_Right
5453            || event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home
5454            || event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End))
5455         {
5456           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5457
5458           if (event->keyval == (rtl ? GDK_KEY_Right : GDK_KEY_Left)
5459               || event->keyval == (rtl ? GDK_KEY_KP_Right : GDK_KEY_KP_Left))
5460             {
5461               GtkTreeViewColumn *col;
5462               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5463               if (col != (GtkTreeViewColumn *)0x1)
5464                 gtk_tree_view_move_column_after (tree_view, column, col);
5465               else
5466                 gtk_widget_error_bell (widget);
5467             }
5468           else if (event->keyval == (rtl ? GDK_KEY_Left : GDK_KEY_Right)
5469                    || event->keyval == (rtl ? GDK_KEY_KP_Left : GDK_KEY_KP_Right))
5470             {
5471               GtkTreeViewColumn *col;
5472               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5473               if (col != (GtkTreeViewColumn *)0x1)
5474                 gtk_tree_view_move_column_after (tree_view, column, col);
5475               else
5476                 gtk_widget_error_bell (widget);
5477             }
5478           else if (event->keyval == GDK_KEY_Home || event->keyval == GDK_KEY_KP_Home)
5479             {
5480               GtkTreeViewColumn *col;
5481               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5482               if (col != (GtkTreeViewColumn *)0x1)
5483                 gtk_tree_view_move_column_after (tree_view, column, col);
5484               else
5485                 gtk_widget_error_bell (widget);
5486             }
5487           else if (event->keyval == GDK_KEY_End || event->keyval == GDK_KEY_KP_End)
5488             {
5489               GtkTreeViewColumn *col;
5490               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5491               if (col != (GtkTreeViewColumn *)0x1)
5492                 gtk_tree_view_move_column_after (tree_view, column, col);
5493               else
5494                 gtk_widget_error_bell (widget);
5495             }
5496
5497           return TRUE;
5498         }
5499     }
5500
5501   /* Chain up to the parent class.  It handles the keybindings. */
5502   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5503     return TRUE;
5504
5505   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5506     {
5507       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5508       return FALSE;
5509     }
5510
5511   /* We pass the event to the search_entry.  If its text changes, then we start
5512    * the typeahead find capabilities. */
5513   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5514       && tree_view->priv->enable_search
5515       && !tree_view->priv->search_custom_entry_set)
5516     {
5517       GdkEvent *new_event;
5518       char *old_text;
5519       const char *new_text;
5520       gboolean retval;
5521       GdkScreen *screen;
5522       gboolean text_modified;
5523       gulong popup_menu_id;
5524
5525       gtk_tree_view_ensure_interactive_directory (tree_view);
5526
5527       /* Make a copy of the current text */
5528       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5529       new_event = gdk_event_copy ((GdkEvent *) event);
5530       g_object_unref (((GdkEventKey *) new_event)->window);
5531       ((GdkEventKey *) new_event)->window = g_object_ref (gtk_widget_get_window (tree_view->priv->search_window));
5532       gtk_widget_realize (tree_view->priv->search_window);
5533
5534       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5535                                         "popup-menu", G_CALLBACK (gtk_true),
5536                                         NULL);
5537
5538       /* Move the entry off screen */
5539       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5540       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5541                        gdk_screen_get_width (screen) + 1,
5542                        gdk_screen_get_height (screen) + 1);
5543       gtk_widget_show (tree_view->priv->search_window);
5544
5545       /* Send the event to the window.  If the preedit_changed signal is emitted
5546        * during this event, we will set priv->imcontext_changed  */
5547       tree_view->priv->imcontext_changed = FALSE;
5548       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5549       gdk_event_free (new_event);
5550       gtk_widget_hide (tree_view->priv->search_window);
5551
5552       g_signal_handler_disconnect (tree_view->priv->search_entry,
5553                                    popup_menu_id);
5554
5555       /* We check to make sure that the entry tried to handle the text, and that
5556        * the text has changed.
5557        */
5558       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5559       text_modified = strcmp (old_text, new_text) != 0;
5560       g_free (old_text);
5561       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5562           (retval && text_modified))               /* ...or the text was modified */
5563         {
5564           if (gtk_tree_view_real_start_interactive_search (tree_view,
5565                                                            gdk_event_get_device ((GdkEvent *) event),
5566                                                            FALSE))
5567             {
5568               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5569               return TRUE;
5570             }
5571           else
5572             {
5573               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5574               return FALSE;
5575             }
5576         }
5577     }
5578
5579   return FALSE;
5580 }
5581
5582 static gboolean
5583 gtk_tree_view_key_release (GtkWidget   *widget,
5584                            GdkEventKey *event)
5585 {
5586   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5587
5588   if (tree_view->priv->rubber_band_status)
5589     return TRUE;
5590
5591   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5592 }
5593
5594 /* FIXME Is this function necessary? Can I get an enter_notify event
5595  * w/o either an expose event or a mouse motion event?
5596  */
5597 static gboolean
5598 gtk_tree_view_enter_notify (GtkWidget        *widget,
5599                             GdkEventCrossing *event)
5600 {
5601   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5602   GtkRBTree *tree;
5603   GtkRBNode *node;
5604   gint new_y;
5605
5606   /* Sanity check it */
5607   if (event->window != tree_view->priv->bin_window)
5608     return FALSE;
5609
5610   if (tree_view->priv->tree == NULL)
5611     return FALSE;
5612
5613   if (event->mode == GDK_CROSSING_GRAB ||
5614       event->mode == GDK_CROSSING_GTK_GRAB ||
5615       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5616       event->mode == GDK_CROSSING_STATE_CHANGED)
5617     return TRUE;
5618
5619   /* find the node internally */
5620   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5621   if (new_y < 0)
5622     new_y = 0;
5623   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5624
5625   tree_view->priv->event_last_x = event->x;
5626   tree_view->priv->event_last_y = event->y;
5627
5628   if ((tree_view->priv->button_pressed_node == NULL) ||
5629       (tree_view->priv->button_pressed_node == node))
5630     prelight_or_select (tree_view, tree, node, event->x, event->y);
5631
5632   return TRUE;
5633 }
5634
5635 static gboolean
5636 gtk_tree_view_leave_notify (GtkWidget        *widget,
5637                             GdkEventCrossing *event)
5638 {
5639   GtkTreeView *tree_view;
5640
5641   if (event->mode == GDK_CROSSING_GRAB)
5642     return TRUE;
5643
5644   tree_view = GTK_TREE_VIEW (widget);
5645
5646   if (tree_view->priv->prelight_node)
5647     _gtk_tree_view_queue_draw_node (tree_view,
5648                                    tree_view->priv->prelight_tree,
5649                                    tree_view->priv->prelight_node,
5650                                    NULL);
5651
5652   tree_view->priv->event_last_x = -10000;
5653   tree_view->priv->event_last_y = -10000;
5654
5655   prelight_or_select (tree_view,
5656                       NULL, NULL,
5657                       -1000, -1000); /* coords not possibly over an arrow */
5658
5659   return TRUE;
5660 }
5661
5662
5663 static gint
5664 gtk_tree_view_focus_out (GtkWidget     *widget,
5665                          GdkEventFocus *event)
5666 {
5667   GtkTreeView *tree_view;
5668
5669   tree_view = GTK_TREE_VIEW (widget);
5670
5671   gtk_widget_queue_draw (widget);
5672
5673   /* destroy interactive search dialog */
5674   if (tree_view->priv->search_window)
5675     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5676                                       gdk_event_get_device ((GdkEvent *) event));
5677
5678   return FALSE;
5679 }
5680
5681
5682 /* Incremental Reflow
5683  */
5684
5685 static void
5686 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5687                                  GtkRBTree   *tree,
5688                                  GtkRBNode   *node)
5689 {
5690   GtkAllocation allocation;
5691   gint y;
5692
5693   y = _gtk_rbtree_node_find_offset (tree, node)
5694     - tree_view->priv->vadjustment->value
5695     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5696
5697   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5698   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5699                               0, y,
5700                               allocation.width,
5701                               GTK_RBNODE_GET_HEIGHT (node));
5702 }
5703
5704 static gboolean
5705 node_is_visible (GtkTreeView *tree_view,
5706                  GtkRBTree   *tree,
5707                  GtkRBNode   *node)
5708 {
5709   int y;
5710   int height;
5711
5712   y = _gtk_rbtree_node_find_offset (tree, node);
5713   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5714
5715   if (y >= tree_view->priv->vadjustment->value &&
5716       y + height <= (tree_view->priv->vadjustment->value
5717                      + tree_view->priv->vadjustment->page_size))
5718     return TRUE;
5719
5720   return FALSE;
5721 }
5722
5723 /* Returns TRUE if it updated the size
5724  */
5725 static gboolean
5726 validate_row (GtkTreeView *tree_view,
5727               GtkRBTree   *tree,
5728               GtkRBNode   *node,
5729               GtkTreeIter *iter,
5730               GtkTreePath *path)
5731 {
5732   GtkTreeViewColumn *column;
5733   GList *list, *first_column, *last_column;
5734   gint height = 0;
5735   gint horizontal_separator;
5736   gint vertical_separator;
5737   gint focus_line_width;
5738   gint depth = gtk_tree_path_get_depth (path);
5739   gboolean retval = FALSE;
5740   gboolean is_separator = FALSE;
5741   gboolean draw_vgrid_lines, draw_hgrid_lines;
5742   gint focus_pad;
5743   gint grid_line_width;
5744   gboolean wide_separators;
5745   gint separator_height;
5746
5747   /* double check the row needs validating */
5748   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5749       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5750     return FALSE;
5751
5752   is_separator = row_is_separator (tree_view, iter, NULL);
5753
5754   gtk_widget_style_get (GTK_WIDGET (tree_view),
5755                         "focus-padding", &focus_pad,
5756                         "focus-line-width", &focus_line_width,
5757                         "horizontal-separator", &horizontal_separator,
5758                         "vertical-separator", &vertical_separator,
5759                         "grid-line-width", &grid_line_width,
5760                         "wide-separators",  &wide_separators,
5761                         "separator-height", &separator_height,
5762                         NULL);
5763
5764   draw_vgrid_lines =
5765     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5766     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5767   draw_hgrid_lines =
5768     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5769     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5770
5771   for (last_column = g_list_last (tree_view->priv->columns);
5772        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5773        last_column = last_column->prev)
5774     ;
5775
5776   for (first_column = g_list_first (tree_view->priv->columns);
5777        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5778        first_column = first_column->next)
5779     ;
5780
5781   for (list = tree_view->priv->columns; list; list = list->next)
5782     {
5783       gint tmp_width;
5784       gint tmp_height;
5785
5786       column = list->data;
5787
5788       if (! column->visible)
5789         continue;
5790
5791       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5792         continue;
5793
5794       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5795                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5796                                                node->children?TRUE:FALSE);
5797       gtk_tree_view_column_cell_get_size (column,
5798                                           NULL, NULL, NULL,
5799                                           &tmp_width, &tmp_height);
5800
5801       if (!is_separator)
5802         {
5803           tmp_height += vertical_separator;
5804           height = MAX (height, tmp_height);
5805           height = MAX (height, tree_view->priv->expander_size);
5806         }
5807       else
5808         {
5809           if (wide_separators)
5810             height = separator_height + 2 * focus_pad;
5811           else
5812             height = 2 + 2 * focus_pad;
5813         }
5814
5815       if (gtk_tree_view_is_expander_column (tree_view, column))
5816         {
5817           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5818
5819           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5820             tmp_width += depth * tree_view->priv->expander_size;
5821         }
5822       else
5823         tmp_width = tmp_width + horizontal_separator;
5824
5825       if (draw_vgrid_lines)
5826         {
5827           if (list->data == first_column || list->data == last_column)
5828             tmp_width += grid_line_width / 2.0;
5829           else
5830             tmp_width += grid_line_width;
5831         }
5832
5833       if (tmp_width > column->requested_width)
5834         {
5835           retval = TRUE;
5836           column->requested_width = tmp_width;
5837         }
5838     }
5839
5840   if (draw_hgrid_lines)
5841     height += grid_line_width;
5842
5843   if (height != GTK_RBNODE_GET_HEIGHT (node))
5844     {
5845       retval = TRUE;
5846       _gtk_rbtree_node_set_height (tree, node, height);
5847     }
5848   _gtk_rbtree_node_mark_valid (tree, node);
5849   tree_view->priv->post_validation_flag = TRUE;
5850
5851   return retval;
5852 }
5853
5854
5855 static void
5856 validate_visible_area (GtkTreeView *tree_view)
5857 {
5858   GtkAllocation allocation;
5859   GtkTreePath *path = NULL;
5860   GtkTreePath *above_path = NULL;
5861   GtkTreeIter iter;
5862   GtkRBTree *tree = NULL;
5863   GtkRBNode *node = NULL;
5864   gboolean need_redraw = FALSE;
5865   gboolean size_changed = FALSE;
5866   gint total_height;
5867   gint area_above = 0;
5868   gint area_below = 0;
5869
5870   if (tree_view->priv->tree == NULL)
5871     return;
5872
5873   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5874       tree_view->priv->scroll_to_path == NULL)
5875     return;
5876
5877   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
5878   total_height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5879
5880   if (total_height == 0)
5881     return;
5882
5883   /* First, we check to see if we need to scroll anywhere
5884    */
5885   if (tree_view->priv->scroll_to_path)
5886     {
5887       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5888       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5889         {
5890           /* we are going to scroll, and will update dy */
5891           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5892           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5893               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5894             {
5895               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5896               if (validate_row (tree_view, tree, node, &iter, path))
5897                 size_changed = TRUE;
5898             }
5899
5900           if (tree_view->priv->scroll_to_use_align)
5901             {
5902               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5903               area_above = (total_height - height) *
5904                 tree_view->priv->scroll_to_row_align;
5905               area_below = total_height - area_above - height;
5906               area_above = MAX (area_above, 0);
5907               area_below = MAX (area_below, 0);
5908             }
5909           else
5910             {
5911               /* two cases:
5912                * 1) row not visible
5913                * 2) row visible
5914                */
5915               gint dy;
5916               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5917
5918               dy = _gtk_rbtree_node_find_offset (tree, node);
5919
5920               if (dy >= tree_view->priv->vadjustment->value &&
5921                   dy + height <= (tree_view->priv->vadjustment->value
5922                                   + tree_view->priv->vadjustment->page_size))
5923                 {
5924                   /* row visible: keep the row at the same position */
5925                   area_above = dy - tree_view->priv->vadjustment->value;
5926                   area_below = (tree_view->priv->vadjustment->value +
5927                                 tree_view->priv->vadjustment->page_size)
5928                                - dy - height;
5929                 }
5930               else
5931                 {
5932                   /* row not visible */
5933                   if (dy >= 0
5934                       && dy + height <= tree_view->priv->vadjustment->page_size)
5935                     {
5936                       /* row at the beginning -- fixed */
5937                       area_above = dy;
5938                       area_below = tree_view->priv->vadjustment->page_size
5939                                    - area_above - height;
5940                     }
5941                   else if (dy >= (tree_view->priv->vadjustment->upper -
5942                                   tree_view->priv->vadjustment->page_size))
5943                     {
5944                       /* row at the end -- fixed */
5945                       area_above = dy - (tree_view->priv->vadjustment->upper -
5946                                    tree_view->priv->vadjustment->page_size);
5947                       area_below = tree_view->priv->vadjustment->page_size -
5948                                    area_above - height;
5949
5950                       if (area_below < 0)
5951                         {
5952                           area_above = tree_view->priv->vadjustment->page_size - height;
5953                           area_below = 0;
5954                         }
5955                     }
5956                   else
5957                     {
5958                       /* row somewhere in the middle, bring it to the top
5959                        * of the view
5960                        */
5961                       area_above = 0;
5962                       area_below = total_height - height;
5963                     }
5964                 }
5965             }
5966         }
5967       else
5968         /* the scroll to isn't valid; ignore it.
5969          */
5970         {
5971           if (tree_view->priv->scroll_to_path && !path)
5972             {
5973               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5974               tree_view->priv->scroll_to_path = NULL;
5975             }
5976           if (path)
5977             gtk_tree_path_free (path);
5978           path = NULL;
5979         }
5980     }
5981
5982   /* We didn't have a scroll_to set, so we just handle things normally
5983    */
5984   if (path == NULL)
5985     {
5986       gint offset;
5987
5988       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5989                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5990                                         &tree, &node);
5991       if (node == NULL)
5992         {
5993           /* In this case, nothing has been validated */
5994           path = gtk_tree_path_new_first ();
5995           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5996         }
5997       else
5998         {
5999           path = _gtk_tree_view_find_path (tree_view, tree, node);
6000           total_height += offset;
6001         }
6002
6003       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6004
6005       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6006           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6007         {
6008           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6009           if (validate_row (tree_view, tree, node, &iter, path))
6010             size_changed = TRUE;
6011         }
6012       area_above = 0;
6013       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6014     }
6015
6016   above_path = gtk_tree_path_copy (path);
6017
6018   /* if we do not validate any row above the new top_row, we will make sure
6019    * that the row immediately above top_row has been validated. (if we do not
6020    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
6021    * when invalidated that row's height will be zero. and this will mess up
6022    * scrolling).
6023    */
6024   if (area_above == 0)
6025     {
6026       GtkRBTree *tmptree;
6027       GtkRBNode *tmpnode;
6028
6029       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
6030       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
6031
6032       if (tmpnode)
6033         {
6034           GtkTreePath *tmppath;
6035           GtkTreeIter tmpiter;
6036
6037           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
6038           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
6039
6040           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
6041               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
6042             {
6043               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
6044               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
6045                 size_changed = TRUE;
6046             }
6047
6048           gtk_tree_path_free (tmppath);
6049         }
6050     }
6051
6052   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6053    * backwards is much slower then forward, as there is no iter_prev function.
6054    * We go forwards first in case we run out of tree.  Then we go backwards to
6055    * fill out the top.
6056    */
6057   while (node && area_below > 0)
6058     {
6059       if (node->children)
6060         {
6061           GtkTreeIter parent = iter;
6062           gboolean has_child;
6063
6064           tree = node->children;
6065           node = tree->root;
6066
6067           g_assert (node != tree->nil);
6068
6069           while (node->left != tree->nil)
6070             node = node->left;
6071           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6072                                                     &iter,
6073                                                     &parent);
6074           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6075           gtk_tree_path_down (path);
6076         }
6077       else
6078         {
6079           gboolean done = FALSE;
6080           do
6081             {
6082               node = _gtk_rbtree_next (tree, node);
6083               if (node != NULL)
6084                 {
6085                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6086                   done = TRUE;
6087                   gtk_tree_path_next (path);
6088
6089                   /* Sanity Check! */
6090                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6091                 }
6092               else
6093                 {
6094                   GtkTreeIter parent_iter = iter;
6095                   gboolean has_parent;
6096
6097                   node = tree->parent_node;
6098                   tree = tree->parent_tree;
6099                   if (tree == NULL)
6100                     break;
6101                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6102                                                            &iter,
6103                                                            &parent_iter);
6104                   gtk_tree_path_up (path);
6105
6106                   /* Sanity check */
6107                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6108                 }
6109             }
6110           while (!done);
6111         }
6112
6113       if (!node)
6114         break;
6115
6116       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6117           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6118         {
6119           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6120           if (validate_row (tree_view, tree, node, &iter, path))
6121               size_changed = TRUE;
6122         }
6123
6124       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6125     }
6126   gtk_tree_path_free (path);
6127
6128   /* If we ran out of tree, and have extra area_below left, we need to add it
6129    * to area_above */
6130   if (area_below > 0)
6131     area_above += area_below;
6132
6133   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6134
6135   /* We walk backwards */
6136   while (area_above > 0)
6137     {
6138       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6139
6140       /* Always find the new path in the tree.  We cannot just assume
6141        * a gtk_tree_path_prev() is enough here, as there might be children
6142        * in between this node and the previous sibling node.  If this
6143        * appears to be a performance hotspot in profiles, we can look into
6144        * intrigate logic for keeping path, node and iter in sync like
6145        * we do for forward walks.  (Which will be hard because of the lacking
6146        * iter_prev).
6147        */
6148
6149       if (node == NULL)
6150         break;
6151
6152       gtk_tree_path_free (above_path);
6153       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6154
6155       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6156
6157       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6158           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6159         {
6160           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6161           if (validate_row (tree_view, tree, node, &iter, above_path))
6162             size_changed = TRUE;
6163         }
6164       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6165     }
6166
6167   /* if we scrolled to a path, we need to set the dy here,
6168    * and sync the top row accordingly
6169    */
6170   if (tree_view->priv->scroll_to_path)
6171     {
6172       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6173       gtk_tree_view_top_row_to_dy (tree_view);
6174
6175       need_redraw = TRUE;
6176     }
6177   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6178     {
6179       /* when we are not scrolling, we should never set dy to something
6180        * else than zero. we update top_row to be in sync with dy = 0.
6181        */
6182       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6183       gtk_tree_view_dy_to_top_row (tree_view);
6184     }
6185   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6186     {
6187       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6188       gtk_tree_view_dy_to_top_row (tree_view);
6189     }
6190   else
6191     gtk_tree_view_top_row_to_dy (tree_view);
6192
6193   /* update width/height and queue a resize */
6194   if (size_changed)
6195     {
6196       GtkRequisition requisition;
6197
6198       /* We temporarily guess a size, under the assumption that it will be the
6199        * same when we get our next size_allocate.  If we don't do this, we'll be
6200        * in an inconsistent state if we call top_row_to_dy. */
6201
6202       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6203                                  &requisition, NULL);
6204       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6205       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6206       gtk_adjustment_changed (tree_view->priv->hadjustment);
6207       gtk_adjustment_changed (tree_view->priv->vadjustment);
6208       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6209     }
6210
6211   if (tree_view->priv->scroll_to_path)
6212     {
6213       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6214       tree_view->priv->scroll_to_path = NULL;
6215     }
6216
6217   if (above_path)
6218     gtk_tree_path_free (above_path);
6219
6220   if (tree_view->priv->scroll_to_column)
6221     {
6222       tree_view->priv->scroll_to_column = NULL;
6223     }
6224   if (need_redraw)
6225     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6226 }
6227
6228 static void
6229 initialize_fixed_height_mode (GtkTreeView *tree_view)
6230 {
6231   if (!tree_view->priv->tree)
6232     return;
6233
6234   if (tree_view->priv->fixed_height < 0)
6235     {
6236       GtkTreeIter iter;
6237       GtkTreePath *path;
6238
6239       GtkRBTree *tree = NULL;
6240       GtkRBNode *node = NULL;
6241
6242       tree = tree_view->priv->tree;
6243       node = tree->root;
6244
6245       path = _gtk_tree_view_find_path (tree_view, tree, node);
6246       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6247
6248       validate_row (tree_view, tree, node, &iter, path);
6249
6250       gtk_tree_path_free (path);
6251
6252       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6253     }
6254
6255    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6256                                  tree_view->priv->fixed_height, TRUE);
6257 }
6258
6259 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6260  * the left-most uninvalidated node.  We then try walking right, validating
6261  * nodes.  Once we find a valid node, we repeat the previous process of finding
6262  * the first invalid node.
6263  */
6264
6265 static gboolean
6266 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6267 {
6268   GtkRBTree *tree = NULL;
6269   GtkRBNode *node = NULL;
6270   gboolean validated_area = FALSE;
6271   gint retval = TRUE;
6272   GtkTreePath *path = NULL;
6273   GtkTreeIter iter;
6274   GTimer *timer;
6275   gint i = 0;
6276
6277   gint prev_height = -1;
6278   gboolean fixed_height = TRUE;
6279
6280   g_assert (tree_view);
6281
6282   if (tree_view->priv->tree == NULL)
6283       return FALSE;
6284
6285   if (tree_view->priv->fixed_height_mode)
6286     {
6287       if (tree_view->priv->fixed_height < 0)
6288         initialize_fixed_height_mode (tree_view);
6289
6290       return FALSE;
6291     }
6292
6293   timer = g_timer_new ();
6294   g_timer_start (timer);
6295
6296   do
6297     {
6298       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6299         {
6300           retval = FALSE;
6301           goto done;
6302         }
6303
6304       if (path != NULL)
6305         {
6306           node = _gtk_rbtree_next (tree, node);
6307           if (node != NULL)
6308             {
6309               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6310               gtk_tree_path_next (path);
6311             }
6312           else
6313             {
6314               gtk_tree_path_free (path);
6315               path = NULL;
6316             }
6317         }
6318
6319       if (path == NULL)
6320         {
6321           tree = tree_view->priv->tree;
6322           node = tree_view->priv->tree->root;
6323
6324           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6325
6326           do
6327             {
6328               if (node->left != tree->nil &&
6329                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6330                 {
6331                   node = node->left;
6332                 }
6333               else if (node->right != tree->nil &&
6334                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6335                 {
6336                   node = node->right;
6337                 }
6338               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6339                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6340                 {
6341                   break;
6342                 }
6343               else if (node->children != NULL)
6344                 {
6345                   tree = node->children;
6346                   node = tree->root;
6347                 }
6348               else
6349                 /* RBTree corruption!  All bad */
6350                 g_assert_not_reached ();
6351             }
6352           while (TRUE);
6353           path = _gtk_tree_view_find_path (tree_view, tree, node);
6354           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6355         }
6356
6357       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6358                        validated_area;
6359
6360       if (!tree_view->priv->fixed_height_check)
6361         {
6362           gint height;
6363
6364           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6365           if (prev_height < 0)
6366             prev_height = height;
6367           else if (prev_height != height)
6368             fixed_height = FALSE;
6369         }
6370
6371       i++;
6372     }
6373   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6374
6375   if (!tree_view->priv->fixed_height_check)
6376    {
6377      if (fixed_height)
6378        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6379
6380      tree_view->priv->fixed_height_check = 1;
6381    }
6382
6383  done:
6384   if (validated_area)
6385     {
6386       GtkRequisition requisition;
6387       /* We temporarily guess a size, under the assumption that it will be the
6388        * same when we get our next size_allocate.  If we don't do this, we'll be
6389        * in an inconsistent state when we call top_row_to_dy. */
6390
6391       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6392                                  &requisition, NULL);
6393       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6394       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6395       gtk_adjustment_changed (tree_view->priv->hadjustment);
6396       gtk_adjustment_changed (tree_view->priv->vadjustment);
6397
6398       if (queue_resize)
6399         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6400     }
6401
6402   if (path) gtk_tree_path_free (path);
6403   g_timer_destroy (timer);
6404
6405   return retval;
6406 }
6407
6408 static gboolean
6409 validate_rows (GtkTreeView *tree_view)
6410 {
6411   gboolean retval;
6412
6413   retval = do_validate_rows (tree_view, TRUE);
6414
6415   if (! retval && tree_view->priv->validate_rows_timer)
6416     {
6417       g_source_remove (tree_view->priv->validate_rows_timer);
6418       tree_view->priv->validate_rows_timer = 0;
6419     }
6420
6421   return retval;
6422 }
6423
6424 static gboolean
6425 validate_rows_handler (GtkTreeView *tree_view)
6426 {
6427   gboolean retval;
6428
6429   retval = do_validate_rows (tree_view, TRUE);
6430   if (! retval && tree_view->priv->validate_rows_timer)
6431     {
6432       g_source_remove (tree_view->priv->validate_rows_timer);
6433       tree_view->priv->validate_rows_timer = 0;
6434     }
6435
6436   return retval;
6437 }
6438
6439 static gboolean
6440 do_presize_handler (GtkTreeView *tree_view)
6441 {
6442   if (tree_view->priv->mark_rows_col_dirty)
6443     {
6444       if (tree_view->priv->tree)
6445         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6446       tree_view->priv->mark_rows_col_dirty = FALSE;
6447     }
6448   validate_visible_area (tree_view);
6449   tree_view->priv->presize_handler_timer = 0;
6450
6451   if (tree_view->priv->fixed_height_mode)
6452     {
6453       GtkRequisition requisition;
6454
6455       gtk_size_request_get_size (GTK_SIZE_REQUEST (tree_view),
6456                                  &requisition, NULL);
6457
6458       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6459       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6460       gtk_adjustment_changed (tree_view->priv->hadjustment);
6461       gtk_adjustment_changed (tree_view->priv->vadjustment);
6462       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6463     }
6464
6465   return FALSE;
6466 }
6467
6468 static gboolean
6469 presize_handler_callback (gpointer data)
6470 {
6471   do_presize_handler (GTK_TREE_VIEW (data));
6472
6473   return FALSE;
6474 }
6475
6476 static void
6477 install_presize_handler (GtkTreeView *tree_view)
6478 {
6479   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6480     return;
6481
6482   if (! tree_view->priv->presize_handler_timer)
6483     {
6484       tree_view->priv->presize_handler_timer =
6485         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6486     }
6487   if (! tree_view->priv->validate_rows_timer)
6488     {
6489       tree_view->priv->validate_rows_timer =
6490         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6491     }
6492 }
6493
6494 static gboolean
6495 scroll_sync_handler (GtkTreeView *tree_view)
6496 {
6497   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6498     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6499   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6500     gtk_tree_view_top_row_to_dy (tree_view);
6501   else
6502     gtk_tree_view_dy_to_top_row (tree_view);
6503
6504   tree_view->priv->scroll_sync_timer = 0;
6505
6506   return FALSE;
6507 }
6508
6509 static void
6510 install_scroll_sync_handler (GtkTreeView *tree_view)
6511 {
6512   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6513     return;
6514
6515   if (!tree_view->priv->scroll_sync_timer)
6516     {
6517       tree_view->priv->scroll_sync_timer =
6518         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6519     }
6520 }
6521
6522 static void
6523 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6524                            GtkTreePath *path,
6525                            gint         offset)
6526 {
6527   gtk_tree_row_reference_free (tree_view->priv->top_row);
6528
6529   if (!path)
6530     {
6531       tree_view->priv->top_row = NULL;
6532       tree_view->priv->top_row_dy = 0;
6533     }
6534   else
6535     {
6536       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6537       tree_view->priv->top_row_dy = offset;
6538     }
6539 }
6540
6541 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6542  * it's set to be NULL, and top_row_dy is 0;
6543  */
6544 static void
6545 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6546 {
6547   gint offset;
6548   GtkTreePath *path;
6549   GtkRBTree *tree;
6550   GtkRBNode *node;
6551
6552   if (tree_view->priv->tree == NULL)
6553     {
6554       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6555     }
6556   else
6557     {
6558       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6559                                         tree_view->priv->dy,
6560                                         &tree, &node);
6561
6562       if (tree == NULL)
6563         {
6564           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6565         }
6566       else
6567         {
6568           path = _gtk_tree_view_find_path (tree_view, tree, node);
6569           gtk_tree_view_set_top_row (tree_view, path, offset);
6570           gtk_tree_path_free (path);
6571         }
6572     }
6573 }
6574
6575 static void
6576 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6577 {
6578   GtkTreePath *path;
6579   GtkRBTree *tree;
6580   GtkRBNode *node;
6581   int new_dy;
6582
6583   /* Avoid recursive calls */
6584   if (tree_view->priv->in_top_row_to_dy)
6585     return;
6586
6587   if (tree_view->priv->top_row)
6588     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6589   else
6590     path = NULL;
6591
6592   if (!path)
6593     tree = NULL;
6594   else
6595     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6596
6597   if (path)
6598     gtk_tree_path_free (path);
6599
6600   if (tree == NULL)
6601     {
6602       /* keep dy and set new toprow */
6603       gtk_tree_row_reference_free (tree_view->priv->top_row);
6604       tree_view->priv->top_row = NULL;
6605       tree_view->priv->top_row_dy = 0;
6606       /* DO NOT install the idle handler */
6607       gtk_tree_view_dy_to_top_row (tree_view);
6608       return;
6609     }
6610
6611   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6612       < tree_view->priv->top_row_dy)
6613     {
6614       /* new top row -- do NOT install the idle handler */
6615       gtk_tree_view_dy_to_top_row (tree_view);
6616       return;
6617     }
6618
6619   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6620   new_dy += tree_view->priv->top_row_dy;
6621
6622   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6623     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6624
6625   new_dy = MAX (0, new_dy);
6626
6627   tree_view->priv->in_top_row_to_dy = TRUE;
6628   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6629   tree_view->priv->in_top_row_to_dy = FALSE;
6630 }
6631
6632
6633 void
6634 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6635 {
6636   tree_view->priv->mark_rows_col_dirty = TRUE;
6637
6638   install_presize_handler (tree_view);
6639 }
6640
6641 /*
6642  * This function works synchronously (due to the while (validate_rows...)
6643  * loop).
6644  *
6645  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6646  * here. You now need to check that yourself.
6647  */
6648 void
6649 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6650                                 GtkTreeViewColumn *column)
6651 {
6652   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6653   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6654
6655   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6656
6657   do_presize_handler (tree_view);
6658   while (validate_rows (tree_view));
6659
6660   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6661 }
6662
6663 /* Drag-and-drop */
6664
6665 static void
6666 set_source_row (GdkDragContext *context,
6667                 GtkTreeModel   *model,
6668                 GtkTreePath    *source_row)
6669 {
6670   g_object_set_data_full (G_OBJECT (context),
6671                           I_("gtk-tree-view-source-row"),
6672                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6673                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6674 }
6675
6676 static GtkTreePath*
6677 get_source_row (GdkDragContext *context)
6678 {
6679   GtkTreeRowReference *ref =
6680     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6681
6682   if (ref)
6683     return gtk_tree_row_reference_get_path (ref);
6684   else
6685     return NULL;
6686 }
6687
6688 typedef struct
6689 {
6690   GtkTreeRowReference *dest_row;
6691   guint                path_down_mode   : 1;
6692   guint                empty_view_drop  : 1;
6693   guint                drop_append_mode : 1;
6694 }
6695 DestRow;
6696
6697 static void
6698 dest_row_free (gpointer data)
6699 {
6700   DestRow *dr = (DestRow *)data;
6701
6702   gtk_tree_row_reference_free (dr->dest_row);
6703   g_slice_free (DestRow, dr);
6704 }
6705
6706 static void
6707 set_dest_row (GdkDragContext *context,
6708               GtkTreeModel   *model,
6709               GtkTreePath    *dest_row,
6710               gboolean        path_down_mode,
6711               gboolean        empty_view_drop,
6712               gboolean        drop_append_mode)
6713 {
6714   DestRow *dr;
6715
6716   if (!dest_row)
6717     {
6718       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6719                               NULL, NULL);
6720       return;
6721     }
6722
6723   dr = g_slice_new (DestRow);
6724
6725   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6726   dr->path_down_mode = path_down_mode != FALSE;
6727   dr->empty_view_drop = empty_view_drop != FALSE;
6728   dr->drop_append_mode = drop_append_mode != FALSE;
6729
6730   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6731                           dr, (GDestroyNotify) dest_row_free);
6732 }
6733
6734 static GtkTreePath*
6735 get_dest_row (GdkDragContext *context,
6736               gboolean       *path_down_mode)
6737 {
6738   DestRow *dr =
6739     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6740
6741   if (dr)
6742     {
6743       GtkTreePath *path = NULL;
6744
6745       if (path_down_mode)
6746         *path_down_mode = dr->path_down_mode;
6747
6748       if (dr->dest_row)
6749         path = gtk_tree_row_reference_get_path (dr->dest_row);
6750       else if (dr->empty_view_drop)
6751         path = gtk_tree_path_new_from_indices (0, -1);
6752       else
6753         path = NULL;
6754
6755       if (path && dr->drop_append_mode)
6756         gtk_tree_path_next (path);
6757
6758       return path;
6759     }
6760   else
6761     return NULL;
6762 }
6763
6764 /* Get/set whether drag_motion requested the drag data and
6765  * drag_data_received should thus not actually insert the data,
6766  * since the data doesn't result from a drop.
6767  */
6768 static void
6769 set_status_pending (GdkDragContext *context,
6770                     GdkDragAction   suggested_action)
6771 {
6772   g_object_set_data (G_OBJECT (context),
6773                      I_("gtk-tree-view-status-pending"),
6774                      GINT_TO_POINTER (suggested_action));
6775 }
6776
6777 static GdkDragAction
6778 get_status_pending (GdkDragContext *context)
6779 {
6780   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6781                                              "gtk-tree-view-status-pending"));
6782 }
6783
6784 static TreeViewDragInfo*
6785 get_info (GtkTreeView *tree_view)
6786 {
6787   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6788 }
6789
6790 static void
6791 destroy_info (TreeViewDragInfo *di)
6792 {
6793   g_slice_free (TreeViewDragInfo, di);
6794 }
6795
6796 static TreeViewDragInfo*
6797 ensure_info (GtkTreeView *tree_view)
6798 {
6799   TreeViewDragInfo *di;
6800
6801   di = get_info (tree_view);
6802
6803   if (di == NULL)
6804     {
6805       di = g_slice_new0 (TreeViewDragInfo);
6806
6807       g_object_set_data_full (G_OBJECT (tree_view),
6808                               I_("gtk-tree-view-drag-info"),
6809                               di,
6810                               (GDestroyNotify) destroy_info);
6811     }
6812
6813   return di;
6814 }
6815
6816 static void
6817 remove_info (GtkTreeView *tree_view)
6818 {
6819   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6820 }
6821
6822 #if 0
6823 static gint
6824 drag_scan_timeout (gpointer data)
6825 {
6826   GtkTreeView *tree_view;
6827   gint x, y;
6828   GdkModifierType state;
6829   GtkTreePath *path = NULL;
6830   GtkTreeViewColumn *column = NULL;
6831   GdkRectangle visible_rect;
6832
6833   GDK_THREADS_ENTER ();
6834
6835   tree_view = GTK_TREE_VIEW (data);
6836
6837   gdk_window_get_pointer (tree_view->priv->bin_window,
6838                           &x, &y, &state);
6839
6840   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6841
6842   /* See if we are near the edge. */
6843   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6844       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6845       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6846       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6847     {
6848       gtk_tree_view_get_path_at_pos (tree_view,
6849                                      tree_view->priv->bin_window,
6850                                      x, y,
6851                                      &path,
6852                                      &column,
6853                                      NULL,
6854                                      NULL);
6855
6856       if (path != NULL)
6857         {
6858           gtk_tree_view_scroll_to_cell (tree_view,
6859                                         path,
6860                                         column,
6861                                         TRUE,
6862                                         0.5, 0.5);
6863
6864           gtk_tree_path_free (path);
6865         }
6866     }
6867
6868   GDK_THREADS_LEAVE ();
6869
6870   return TRUE;
6871 }
6872 #endif /* 0 */
6873
6874 static void
6875 add_scroll_timeout (GtkTreeView *tree_view)
6876 {
6877   if (tree_view->priv->scroll_timeout == 0)
6878     {
6879       tree_view->priv->scroll_timeout =
6880         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6881     }
6882 }
6883
6884 static void
6885 remove_scroll_timeout (GtkTreeView *tree_view)
6886 {
6887   if (tree_view->priv->scroll_timeout != 0)
6888     {
6889       g_source_remove (tree_view->priv->scroll_timeout);
6890       tree_view->priv->scroll_timeout = 0;
6891     }
6892 }
6893
6894 static gboolean
6895 check_model_dnd (GtkTreeModel *model,
6896                  GType         required_iface,
6897                  const gchar  *signal)
6898 {
6899   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6900     {
6901       g_warning ("You must override the default '%s' handler "
6902                  "on GtkTreeView when using models that don't support "
6903                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6904                  "is to connect to '%s' and call "
6905                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6906                  "the default handler from running. Look at the source code "
6907                  "for the default handler in gtktreeview.c to get an idea what "
6908                  "your handler should do. (gtktreeview.c is in the GTK source "
6909                  "code.) If you're using GTK from a language other than C, "
6910                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6911                  signal, g_type_name (required_iface), signal);
6912       return FALSE;
6913     }
6914   else
6915     return TRUE;
6916 }
6917
6918 static void
6919 remove_open_timeout (GtkTreeView *tree_view)
6920 {
6921   if (tree_view->priv->open_dest_timeout != 0)
6922     {
6923       g_source_remove (tree_view->priv->open_dest_timeout);
6924       tree_view->priv->open_dest_timeout = 0;
6925     }
6926 }
6927
6928
6929 static gint
6930 open_row_timeout (gpointer data)
6931 {
6932   GtkTreeView *tree_view = data;
6933   GtkTreePath *dest_path = NULL;
6934   GtkTreeViewDropPosition pos;
6935   gboolean result = FALSE;
6936
6937   gtk_tree_view_get_drag_dest_row (tree_view,
6938                                    &dest_path,
6939                                    &pos);
6940
6941   if (dest_path &&
6942       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6943        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6944     {
6945       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6946       tree_view->priv->open_dest_timeout = 0;
6947
6948       gtk_tree_path_free (dest_path);
6949     }
6950   else
6951     {
6952       if (dest_path)
6953         gtk_tree_path_free (dest_path);
6954
6955       result = TRUE;
6956     }
6957
6958   return result;
6959 }
6960
6961 static gboolean
6962 scroll_row_timeout (gpointer data)
6963 {
6964   GtkTreeView *tree_view = data;
6965
6966   gtk_tree_view_vertical_autoscroll (tree_view);
6967
6968   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6969     gtk_tree_view_update_rubber_band (tree_view);
6970
6971   return TRUE;
6972 }
6973
6974 /* Returns TRUE if event should not be propagated to parent widgets */
6975 static gboolean
6976 set_destination_row (GtkTreeView    *tree_view,
6977                      GdkDragContext *context,
6978                      /* coordinates relative to the widget */
6979                      gint            x,
6980                      gint            y,
6981                      GdkDragAction  *suggested_action,
6982                      GdkAtom        *target)
6983 {
6984   GtkTreePath *path = NULL;
6985   GtkTreeViewDropPosition pos;
6986   GtkTreeViewDropPosition old_pos;
6987   TreeViewDragInfo *di;
6988   GtkWidget *widget;
6989   GtkTreePath *old_dest_path = NULL;
6990   gboolean can_drop = FALSE;
6991
6992   *suggested_action = 0;
6993   *target = GDK_NONE;
6994
6995   widget = GTK_WIDGET (tree_view);
6996
6997   di = get_info (tree_view);
6998
6999   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
7000     {
7001       /* someone unset us as a drag dest, note that if
7002        * we return FALSE drag_leave isn't called
7003        */
7004
7005       gtk_tree_view_set_drag_dest_row (tree_view,
7006                                        NULL,
7007                                        GTK_TREE_VIEW_DROP_BEFORE);
7008
7009       remove_scroll_timeout (GTK_TREE_VIEW (widget));
7010       remove_open_timeout (GTK_TREE_VIEW (widget));
7011
7012       return FALSE; /* no longer a drop site */
7013     }
7014
7015   *target = gtk_drag_dest_find_target (widget, context,
7016                                        gtk_drag_dest_get_target_list (widget));
7017   if (*target == GDK_NONE)
7018     {
7019       return FALSE;
7020     }
7021
7022   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
7023                                           x, y,
7024                                           &path,
7025                                           &pos))
7026     {
7027       gint n_children;
7028       GtkTreeModel *model;
7029
7030       remove_open_timeout (tree_view);
7031
7032       /* the row got dropped on empty space, let's setup a special case
7033        */
7034
7035       if (path)
7036         gtk_tree_path_free (path);
7037
7038       model = gtk_tree_view_get_model (tree_view);
7039
7040       n_children = gtk_tree_model_iter_n_children (model, NULL);
7041       if (n_children)
7042         {
7043           pos = GTK_TREE_VIEW_DROP_AFTER;
7044           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
7045         }
7046       else
7047         {
7048           pos = GTK_TREE_VIEW_DROP_BEFORE;
7049           path = gtk_tree_path_new_from_indices (0, -1);
7050         }
7051
7052       can_drop = TRUE;
7053
7054       goto out;
7055     }
7056
7057   g_assert (path);
7058
7059   /* If we left the current row's "open" zone, unset the timeout for
7060    * opening the row
7061    */
7062   gtk_tree_view_get_drag_dest_row (tree_view,
7063                                    &old_dest_path,
7064                                    &old_pos);
7065
7066   if (old_dest_path &&
7067       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7068        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7069          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7070     remove_open_timeout (tree_view);
7071
7072   if (old_dest_path)
7073     gtk_tree_path_free (old_dest_path);
7074
7075   if (TRUE /* FIXME if the location droppable predicate */)
7076     {
7077       can_drop = TRUE;
7078     }
7079
7080 out:
7081   if (can_drop)
7082     {
7083       GtkWidget *source_widget;
7084
7085       *suggested_action = context->suggested_action;
7086       source_widget = gtk_drag_get_source_widget (context);
7087
7088       if (source_widget == widget)
7089         {
7090           /* Default to MOVE, unless the user has
7091            * pressed ctrl or shift to affect available actions
7092            */
7093           if ((context->actions & GDK_ACTION_MOVE) != 0)
7094             *suggested_action = GDK_ACTION_MOVE;
7095         }
7096
7097       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7098                                        path, pos);
7099     }
7100   else
7101     {
7102       /* can't drop here */
7103       remove_open_timeout (tree_view);
7104
7105       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7106                                        NULL,
7107                                        GTK_TREE_VIEW_DROP_BEFORE);
7108     }
7109
7110   if (path)
7111     gtk_tree_path_free (path);
7112
7113   return TRUE;
7114 }
7115
7116 static GtkTreePath*
7117 get_logical_dest_row (GtkTreeView *tree_view,
7118                       gboolean    *path_down_mode,
7119                       gboolean    *drop_append_mode)
7120 {
7121   /* adjust path to point to the row the drop goes in front of */
7122   GtkTreePath *path = NULL;
7123   GtkTreeViewDropPosition pos;
7124
7125   g_return_val_if_fail (path_down_mode != NULL, NULL);
7126   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7127
7128   *path_down_mode = FALSE;
7129   *drop_append_mode = 0;
7130
7131   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7132
7133   if (path == NULL)
7134     return NULL;
7135
7136   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7137     ; /* do nothing */
7138   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7139            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7140     *path_down_mode = TRUE;
7141   else
7142     {
7143       GtkTreeIter iter;
7144       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7145
7146       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7147
7148       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7149           !gtk_tree_model_iter_next (model, &iter))
7150         *drop_append_mode = 1;
7151       else
7152         {
7153           *drop_append_mode = 0;
7154           gtk_tree_path_next (path);
7155         }
7156     }
7157
7158   return path;
7159 }
7160
7161 static gboolean
7162 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7163                                         GdkEventMotion   *event)
7164 {
7165   GtkWidget *widget = GTK_WIDGET (tree_view);
7166   GdkDragContext *context;
7167   TreeViewDragInfo *di;
7168   GtkTreePath *path = NULL;
7169   gint button;
7170   gint cell_x, cell_y;
7171   GtkTreeModel *model;
7172   gboolean retval = FALSE;
7173
7174   di = get_info (tree_view);
7175
7176   if (di == NULL || !di->source_set)
7177     goto out;
7178
7179   if (tree_view->priv->pressed_button < 0)
7180     goto out;
7181
7182   if (!gtk_drag_check_threshold (widget,
7183                                  tree_view->priv->press_start_x,
7184                                  tree_view->priv->press_start_y,
7185                                  event->x, event->y))
7186     goto out;
7187
7188   model = gtk_tree_view_get_model (tree_view);
7189
7190   if (model == NULL)
7191     goto out;
7192
7193   button = tree_view->priv->pressed_button;
7194   tree_view->priv->pressed_button = -1;
7195
7196   gtk_tree_view_get_path_at_pos (tree_view,
7197                                  tree_view->priv->press_start_x,
7198                                  tree_view->priv->press_start_y,
7199                                  &path,
7200                                  NULL,
7201                                  &cell_x,
7202                                  &cell_y);
7203
7204   if (path == NULL)
7205     goto out;
7206
7207   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7208       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7209                                            path))
7210     goto out;
7211
7212   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7213     goto out;
7214
7215   /* Now we can begin the drag */
7216
7217   retval = TRUE;
7218
7219   context = gtk_drag_begin (widget,
7220                             gtk_drag_source_get_target_list (widget),
7221                             di->source_actions,
7222                             button,
7223                             (GdkEvent*)event);
7224
7225   set_source_row (context, model, path);
7226
7227  out:
7228   if (path)
7229     gtk_tree_path_free (path);
7230
7231   return retval;
7232 }
7233
7234
7235 static void
7236 gtk_tree_view_drag_begin (GtkWidget      *widget,
7237                           GdkDragContext *context)
7238 {
7239   GtkTreeView *tree_view;
7240   GtkTreePath *path = NULL;
7241   gint cell_x, cell_y;
7242   cairo_surface_t *row_pix;
7243   TreeViewDragInfo *di;
7244
7245   tree_view = GTK_TREE_VIEW (widget);
7246
7247   /* if the user uses a custom DND source impl, we don't set the icon here */
7248   di = get_info (tree_view);
7249
7250   if (di == NULL || !di->source_set)
7251     return;
7252
7253   gtk_tree_view_get_path_at_pos (tree_view,
7254                                  tree_view->priv->press_start_x,
7255                                  tree_view->priv->press_start_y,
7256                                  &path,
7257                                  NULL,
7258                                  &cell_x,
7259                                  &cell_y);
7260
7261   g_return_if_fail (path != NULL);
7262
7263   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7264                                                 path);
7265   cairo_surface_set_device_offset (row_pix,
7266                                    /* the + 1 is for the black border in the icon */
7267                                    - (tree_view->priv->press_start_x + 1),
7268                                    - (cell_y + 1));
7269
7270   gtk_drag_set_icon_surface (context, row_pix);
7271
7272   cairo_surface_destroy (row_pix);
7273   gtk_tree_path_free (path);
7274 }
7275
7276 static void
7277 gtk_tree_view_drag_end (GtkWidget      *widget,
7278                         GdkDragContext *context)
7279 {
7280   /* do nothing */
7281 }
7282
7283 /* Default signal implementations for the drag signals */
7284 static void
7285 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7286                              GdkDragContext   *context,
7287                              GtkSelectionData *selection_data,
7288                              guint             info,
7289                              guint             time)
7290 {
7291   GtkTreeView *tree_view;
7292   GtkTreeModel *model;
7293   TreeViewDragInfo *di;
7294   GtkTreePath *source_row;
7295
7296   tree_view = GTK_TREE_VIEW (widget);
7297
7298   model = gtk_tree_view_get_model (tree_view);
7299
7300   if (model == NULL)
7301     return;
7302
7303   di = get_info (GTK_TREE_VIEW (widget));
7304
7305   if (di == NULL)
7306     return;
7307
7308   source_row = get_source_row (context);
7309
7310   if (source_row == NULL)
7311     return;
7312
7313   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7314    * any model; for DragSource models there are some other targets
7315    * we also support.
7316    */
7317
7318   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7319       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7320                                           source_row,
7321                                           selection_data))
7322     goto done;
7323
7324   /* If drag_data_get does nothing, try providing row data. */
7325   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7326     {
7327       gtk_tree_set_row_drag_data (selection_data,
7328                                   model,
7329                                   source_row);
7330     }
7331
7332  done:
7333   gtk_tree_path_free (source_row);
7334 }
7335
7336
7337 static void
7338 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7339                                 GdkDragContext *context)
7340 {
7341   TreeViewDragInfo *di;
7342   GtkTreeModel *model;
7343   GtkTreeView *tree_view;
7344   GtkTreePath *source_row;
7345
7346   tree_view = GTK_TREE_VIEW (widget);
7347   model = gtk_tree_view_get_model (tree_view);
7348
7349   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7350     return;
7351
7352   di = get_info (tree_view);
7353
7354   if (di == NULL)
7355     return;
7356
7357   source_row = get_source_row (context);
7358
7359   if (source_row == NULL)
7360     return;
7361
7362   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7363                                          source_row);
7364
7365   gtk_tree_path_free (source_row);
7366
7367   set_source_row (context, NULL, NULL);
7368 }
7369
7370 static void
7371 gtk_tree_view_drag_leave (GtkWidget      *widget,
7372                           GdkDragContext *context,
7373                           guint             time)
7374 {
7375   /* unset any highlight row */
7376   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7377                                    NULL,
7378                                    GTK_TREE_VIEW_DROP_BEFORE);
7379
7380   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7381   remove_open_timeout (GTK_TREE_VIEW (widget));
7382 }
7383
7384
7385 static gboolean
7386 gtk_tree_view_drag_motion (GtkWidget        *widget,
7387                            GdkDragContext   *context,
7388                            /* coordinates relative to the widget */
7389                            gint              x,
7390                            gint              y,
7391                            guint             time)
7392 {
7393   gboolean empty;
7394   GtkTreePath *path = NULL;
7395   GtkTreeViewDropPosition pos;
7396   GtkTreeView *tree_view;
7397   GdkDragAction suggested_action = 0;
7398   GdkAtom target;
7399
7400   tree_view = GTK_TREE_VIEW (widget);
7401
7402   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7403     return FALSE;
7404
7405   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7406
7407   /* we only know this *after* set_desination_row */
7408   empty = tree_view->priv->empty_view_drop;
7409
7410   if (path == NULL && !empty)
7411     {
7412       /* Can't drop here. */
7413       gdk_drag_status (context, 0, time);
7414     }
7415   else
7416     {
7417       if (tree_view->priv->open_dest_timeout == 0 &&
7418           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7419            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7420         {
7421           tree_view->priv->open_dest_timeout =
7422             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7423         }
7424       else
7425         {
7426           add_scroll_timeout (tree_view);
7427         }
7428
7429       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7430         {
7431           /* Request data so we can use the source row when
7432            * determining whether to accept the drop
7433            */
7434           set_status_pending (context, suggested_action);
7435           gtk_drag_get_data (widget, context, target, time);
7436         }
7437       else
7438         {
7439           set_status_pending (context, 0);
7440           gdk_drag_status (context, suggested_action, time);
7441         }
7442     }
7443
7444   if (path)
7445     gtk_tree_path_free (path);
7446
7447   return TRUE;
7448 }
7449
7450
7451 static gboolean
7452 gtk_tree_view_drag_drop (GtkWidget        *widget,
7453                          GdkDragContext   *context,
7454                          /* coordinates relative to the widget */
7455                          gint              x,
7456                          gint              y,
7457                          guint             time)
7458 {
7459   GtkTreeView *tree_view;
7460   GtkTreePath *path;
7461   GdkDragAction suggested_action = 0;
7462   GdkAtom target = GDK_NONE;
7463   TreeViewDragInfo *di;
7464   GtkTreeModel *model;
7465   gboolean path_down_mode;
7466   gboolean drop_append_mode;
7467
7468   tree_view = GTK_TREE_VIEW (widget);
7469
7470   model = gtk_tree_view_get_model (tree_view);
7471
7472   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7473   remove_open_timeout (GTK_TREE_VIEW (widget));
7474
7475   di = get_info (tree_view);
7476
7477   if (di == NULL)
7478     return FALSE;
7479
7480   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7481     return FALSE;
7482
7483   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7484     return FALSE;
7485
7486   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7487
7488   if (target != GDK_NONE && path != NULL)
7489     {
7490       /* in case a motion had requested drag data, change things so we
7491        * treat drag data receives as a drop.
7492        */
7493       set_status_pending (context, 0);
7494       set_dest_row (context, model, path,
7495                     path_down_mode, tree_view->priv->empty_view_drop,
7496                     drop_append_mode);
7497     }
7498
7499   if (path)
7500     gtk_tree_path_free (path);
7501
7502   /* Unset this thing */
7503   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7504                                    NULL,
7505                                    GTK_TREE_VIEW_DROP_BEFORE);
7506
7507   if (target != GDK_NONE)
7508     {
7509       gtk_drag_get_data (widget, context, target, time);
7510       return TRUE;
7511     }
7512   else
7513     return FALSE;
7514 }
7515
7516 static void
7517 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7518                                   GdkDragContext   *context,
7519                                   /* coordinates relative to the widget */
7520                                   gint              x,
7521                                   gint              y,
7522                                   GtkSelectionData *selection_data,
7523                                   guint             info,
7524                                   guint             time)
7525 {
7526   GtkTreePath *path;
7527   TreeViewDragInfo *di;
7528   gboolean accepted = FALSE;
7529   GtkTreeModel *model;
7530   GtkTreeView *tree_view;
7531   GtkTreePath *dest_row;
7532   GdkDragAction suggested_action;
7533   gboolean path_down_mode;
7534   gboolean drop_append_mode;
7535
7536   tree_view = GTK_TREE_VIEW (widget);
7537
7538   model = gtk_tree_view_get_model (tree_view);
7539
7540   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7541     return;
7542
7543   di = get_info (tree_view);
7544
7545   if (di == NULL)
7546     return;
7547
7548   suggested_action = get_status_pending (context);
7549
7550   if (suggested_action)
7551     {
7552       /* We are getting this data due to a request in drag_motion,
7553        * rather than due to a request in drag_drop, so we are just
7554        * supposed to call drag_status, not actually paste in the
7555        * data.
7556        */
7557       path = get_logical_dest_row (tree_view, &path_down_mode,
7558                                    &drop_append_mode);
7559
7560       if (path == NULL)
7561         suggested_action = 0;
7562       else if (path_down_mode)
7563         gtk_tree_path_down (path);
7564
7565       if (suggested_action)
7566         {
7567           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7568                                                      path,
7569                                                      selection_data))
7570             {
7571               if (path_down_mode)
7572                 {
7573                   path_down_mode = FALSE;
7574                   gtk_tree_path_up (path);
7575
7576                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7577                                                              path,
7578                                                              selection_data))
7579                     suggested_action = 0;
7580                 }
7581               else
7582                 suggested_action = 0;
7583             }
7584         }
7585
7586       gdk_drag_status (context, suggested_action, time);
7587
7588       if (path)
7589         gtk_tree_path_free (path);
7590
7591       /* If you can't drop, remove user drop indicator until the next motion */
7592       if (suggested_action == 0)
7593         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7594                                          NULL,
7595                                          GTK_TREE_VIEW_DROP_BEFORE);
7596
7597       return;
7598     }
7599
7600   dest_row = get_dest_row (context, &path_down_mode);
7601
7602   if (dest_row == NULL)
7603     return;
7604
7605   if (selection_data->length >= 0)
7606     {
7607       if (path_down_mode)
7608         {
7609           gtk_tree_path_down (dest_row);
7610           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7611                                                      dest_row, selection_data))
7612             gtk_tree_path_up (dest_row);
7613         }
7614     }
7615
7616   if (selection_data->length >= 0)
7617     {
7618       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7619                                                  dest_row,
7620                                                  selection_data))
7621         accepted = TRUE;
7622     }
7623
7624   gtk_drag_finish (context,
7625                    accepted,
7626                    (context->action == GDK_ACTION_MOVE),
7627                    time);
7628
7629   if (gtk_tree_path_get_depth (dest_row) == 1
7630       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7631     {
7632       /* special special case drag to "0", scroll to first item */
7633       if (!tree_view->priv->scroll_to_path)
7634         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7635     }
7636
7637   gtk_tree_path_free (dest_row);
7638
7639   /* drop dest_row */
7640   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7641 }
7642
7643
7644
7645 /* GtkContainer Methods
7646  */
7647
7648
7649 static void
7650 gtk_tree_view_remove (GtkContainer *container,
7651                       GtkWidget    *widget)
7652 {
7653   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7654   GtkTreeViewChild *child = NULL;
7655   GList *tmp_list;
7656
7657   tmp_list = tree_view->priv->children;
7658   while (tmp_list)
7659     {
7660       child = tmp_list->data;
7661       if (child->widget == widget)
7662         {
7663           gtk_widget_unparent (widget);
7664
7665           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7666           g_list_free_1 (tmp_list);
7667           g_slice_free (GtkTreeViewChild, child);
7668           return;
7669         }
7670
7671       tmp_list = tmp_list->next;
7672     }
7673
7674   tmp_list = tree_view->priv->columns;
7675
7676   while (tmp_list)
7677     {
7678       GtkTreeViewColumn *column;
7679       column = tmp_list->data;
7680       if (column->button == widget)
7681         {
7682           gtk_widget_unparent (widget);
7683           return;
7684         }
7685       tmp_list = tmp_list->next;
7686     }
7687 }
7688
7689 static void
7690 gtk_tree_view_forall (GtkContainer *container,
7691                       gboolean      include_internals,
7692                       GtkCallback   callback,
7693                       gpointer      callback_data)
7694 {
7695   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7696   GtkTreeViewChild *child = NULL;
7697   GtkTreeViewColumn *column;
7698   GList *tmp_list;
7699
7700   tmp_list = tree_view->priv->children;
7701   while (tmp_list)
7702     {
7703       child = tmp_list->data;
7704       tmp_list = tmp_list->next;
7705
7706       (* callback) (child->widget, callback_data);
7707     }
7708   if (include_internals == FALSE)
7709     return;
7710
7711   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7712     {
7713       column = tmp_list->data;
7714
7715       if (column->button)
7716         (* callback) (column->button, callback_data);
7717     }
7718 }
7719
7720 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7721  * cells. If so we draw one big row-spanning focus rectangle.
7722  */
7723 static gboolean
7724 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7725 {
7726   GList *list;
7727
7728   for (list = tree_view->priv->columns; list; list = list->next)
7729     {
7730       if (!((GtkTreeViewColumn *)list->data)->visible)
7731         continue;
7732       if (_gtk_tree_view_column_count_special_cells (list->data))
7733         return TRUE;
7734     }
7735
7736   return FALSE;
7737 }
7738
7739 static void
7740 column_sizing_notify (GObject    *object,
7741                       GParamSpec *pspec,
7742                       gpointer    data)
7743 {
7744   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7745
7746   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7747     /* disable fixed height mode */
7748     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7749 }
7750
7751 /**
7752  * gtk_tree_view_set_fixed_height_mode:
7753  * @tree_view: a #GtkTreeView
7754  * @enable: %TRUE to enable fixed height mode
7755  *
7756  * Enables or disables the fixed height mode of @tree_view.
7757  * Fixed height mode speeds up #GtkTreeView by assuming that all
7758  * rows have the same height.
7759  * Only enable this option if all rows are the same height and all
7760  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7761  *
7762  * Since: 2.6
7763  **/
7764 void
7765 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7766                                      gboolean     enable)
7767 {
7768   GList *l;
7769
7770   enable = enable != FALSE;
7771
7772   if (enable == tree_view->priv->fixed_height_mode)
7773     return;
7774
7775   if (!enable)
7776     {
7777       tree_view->priv->fixed_height_mode = 0;
7778       tree_view->priv->fixed_height = -1;
7779
7780       /* force a revalidation */
7781       install_presize_handler (tree_view);
7782     }
7783   else
7784     {
7785       /* make sure all columns are of type FIXED */
7786       for (l = tree_view->priv->columns; l; l = l->next)
7787         {
7788           GtkTreeViewColumn *c = l->data;
7789
7790           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7791         }
7792
7793       /* yes, we really have to do this is in a separate loop */
7794       for (l = tree_view->priv->columns; l; l = l->next)
7795         g_signal_connect (l->data, "notify::sizing",
7796                           G_CALLBACK (column_sizing_notify), tree_view);
7797
7798       tree_view->priv->fixed_height_mode = 1;
7799       tree_view->priv->fixed_height = -1;
7800
7801       if (tree_view->priv->tree)
7802         initialize_fixed_height_mode (tree_view);
7803     }
7804
7805   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7806 }
7807
7808 /**
7809  * gtk_tree_view_get_fixed_height_mode:
7810  * @tree_view: a #GtkTreeView
7811  *
7812  * Returns whether fixed height mode is turned on for @tree_view.
7813  *
7814  * Return value: %TRUE if @tree_view is in fixed height mode
7815  *
7816  * Since: 2.6
7817  **/
7818 gboolean
7819 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7820 {
7821   return tree_view->priv->fixed_height_mode;
7822 }
7823
7824 /* Returns TRUE if the focus is within the headers, after the focus operation is
7825  * done
7826  */
7827 static gboolean
7828 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7829                             GtkDirectionType  dir,
7830                             gboolean          clamp_column_visible)
7831 {
7832   GtkWidget *focus_child;
7833
7834   GList *last_column, *first_column;
7835   GList *tmp_list;
7836   gboolean rtl;
7837
7838   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7839     return FALSE;
7840
7841   focus_child = gtk_container_get_focus_child (GTK_CONTAINER (tree_view));
7842
7843   first_column = tree_view->priv->columns;
7844   while (first_column)
7845     {
7846       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7847           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7848           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7849            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7850         break;
7851       first_column = first_column->next;
7852     }
7853
7854   /* No headers are visible, or are focusable.  We can't focus in or out.
7855    */
7856   if (first_column == NULL)
7857     return FALSE;
7858
7859   last_column = g_list_last (tree_view->priv->columns);
7860   while (last_column)
7861     {
7862       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7863           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7864           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7865            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7866         break;
7867       last_column = last_column->prev;
7868     }
7869
7870
7871   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7872
7873   switch (dir)
7874     {
7875     case GTK_DIR_TAB_BACKWARD:
7876     case GTK_DIR_TAB_FORWARD:
7877     case GTK_DIR_UP:
7878     case GTK_DIR_DOWN:
7879       if (focus_child == NULL)
7880         {
7881           if (tree_view->priv->focus_column != NULL &&
7882               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7883             focus_child = tree_view->priv->focus_column->button;
7884           else
7885             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7886           gtk_widget_grab_focus (focus_child);
7887           break;
7888         }
7889       return FALSE;
7890
7891     case GTK_DIR_LEFT:
7892     case GTK_DIR_RIGHT:
7893       if (focus_child == NULL)
7894         {
7895           if (tree_view->priv->focus_column != NULL)
7896             focus_child = tree_view->priv->focus_column->button;
7897           else if (dir == GTK_DIR_LEFT)
7898             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7899           else
7900             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7901           gtk_widget_grab_focus (focus_child);
7902           break;
7903         }
7904
7905       if (gtk_widget_child_focus (focus_child, dir))
7906         {
7907           /* The focus moves inside the button. */
7908           /* This is probably a great example of bad UI */
7909           break;
7910         }
7911
7912       /* We need to move the focus among the row of buttons. */
7913       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7914         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7915           break;
7916
7917       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7918           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7919         {
7920           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7921           break;
7922         }
7923
7924       while (tmp_list)
7925         {
7926           GtkTreeViewColumn *column;
7927
7928           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7929             tmp_list = tmp_list->next;
7930           else
7931             tmp_list = tmp_list->prev;
7932
7933           if (tmp_list == NULL)
7934             {
7935               g_warning ("Internal button not found");
7936               break;
7937             }
7938           column = tmp_list->data;
7939           if (column->button &&
7940               column->visible &&
7941               gtk_widget_get_can_focus (column->button))
7942             {
7943               focus_child = column->button;
7944               gtk_widget_grab_focus (column->button);
7945               break;
7946             }
7947         }
7948       break;
7949     default:
7950       g_assert_not_reached ();
7951       break;
7952     }
7953
7954   /* if focus child is non-null, we assume it's been set to the current focus child
7955    */
7956   if (focus_child)
7957     {
7958       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7959         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7960           {
7961             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7962             break;
7963           }
7964
7965       if (clamp_column_visible)
7966         {
7967           gtk_tree_view_clamp_column_visible (tree_view,
7968                                               tree_view->priv->focus_column,
7969                                               FALSE);
7970         }
7971     }
7972
7973   return (focus_child != NULL);
7974 }
7975
7976 /* This function returns in 'path' the first focusable path, if the given path
7977  * is already focusable, it's the returned one.
7978  */
7979 static gboolean
7980 search_first_focusable_path (GtkTreeView  *tree_view,
7981                              GtkTreePath **path,
7982                              gboolean      search_forward,
7983                              GtkRBTree   **new_tree,
7984                              GtkRBNode   **new_node)
7985 {
7986   GtkRBTree *tree = NULL;
7987   GtkRBNode *node = NULL;
7988
7989   if (!path || !*path)
7990     return FALSE;
7991
7992   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7993
7994   if (!tree || !node)
7995     return FALSE;
7996
7997   while (node && row_is_separator (tree_view, NULL, *path))
7998     {
7999       if (search_forward)
8000         _gtk_rbtree_next_full (tree, node, &tree, &node);
8001       else
8002         _gtk_rbtree_prev_full (tree, node, &tree, &node);
8003
8004       if (*path)
8005         gtk_tree_path_free (*path);
8006
8007       if (node)
8008         *path = _gtk_tree_view_find_path (tree_view, tree, node);
8009       else
8010         *path = NULL;
8011     }
8012
8013   if (new_tree)
8014     *new_tree = tree;
8015
8016   if (new_node)
8017     *new_node = node;
8018
8019   return (*path != NULL);
8020 }
8021
8022 static gint
8023 gtk_tree_view_focus (GtkWidget        *widget,
8024                      GtkDirectionType  direction)
8025 {
8026   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8027   GtkContainer *container = GTK_CONTAINER (widget);
8028   GtkWidget *focus_child;
8029
8030   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
8031     return FALSE;
8032
8033   focus_child = gtk_container_get_focus_child (container);
8034
8035   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
8036   /* Case 1.  Headers currently have focus. */
8037   if (focus_child)
8038     {
8039       switch (direction)
8040         {
8041         case GTK_DIR_LEFT:
8042         case GTK_DIR_RIGHT:
8043           gtk_tree_view_header_focus (tree_view, direction, TRUE);
8044           return TRUE;
8045         case GTK_DIR_TAB_BACKWARD:
8046         case GTK_DIR_UP:
8047           return FALSE;
8048         case GTK_DIR_TAB_FORWARD:
8049         case GTK_DIR_DOWN:
8050           gtk_widget_grab_focus (widget);
8051           return TRUE;
8052         default:
8053           g_assert_not_reached ();
8054           return FALSE;
8055         }
8056     }
8057
8058   /* Case 2. We don't have focus at all. */
8059   if (!gtk_widget_has_focus (widget))
8060     {
8061       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8062         gtk_widget_grab_focus (widget);
8063       return TRUE;
8064     }
8065
8066   /* Case 3. We have focus already. */
8067   if (direction == GTK_DIR_TAB_BACKWARD)
8068     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8069   else if (direction == GTK_DIR_TAB_FORWARD)
8070     return FALSE;
8071
8072   /* Other directions caught by the keybindings */
8073   gtk_widget_grab_focus (widget);
8074   return TRUE;
8075 }
8076
8077 static void
8078 gtk_tree_view_grab_focus (GtkWidget *widget)
8079 {
8080   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8081
8082   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8083 }
8084
8085 static void
8086 gtk_tree_view_style_set (GtkWidget *widget,
8087                          GtkStyle *previous_style)
8088 {
8089   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8090   GtkStyle *style;
8091   GList *list;
8092   GtkTreeViewColumn *column;
8093
8094   if (gtk_widget_get_realized (widget))
8095     {
8096       style = gtk_widget_get_style (widget);
8097       gdk_window_set_background (tree_view->priv->bin_window,
8098                                  &style->base[gtk_widget_get_state (widget)]);
8099       gtk_style_set_background (style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8100
8101       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8102       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8103     }
8104
8105   gtk_widget_style_get (widget,
8106                         "expander-size", &tree_view->priv->expander_size,
8107                         NULL);
8108   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8109
8110   for (list = tree_view->priv->columns; list; list = list->next)
8111     {
8112       column = list->data;
8113       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8114     }
8115
8116   tree_view->priv->fixed_height = -1;
8117   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8118
8119   gtk_widget_queue_resize (widget);
8120 }
8121
8122
8123 static void
8124 gtk_tree_view_set_focus_child (GtkContainer *container,
8125                                GtkWidget    *child)
8126 {
8127   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8128   GList *list;
8129
8130   for (list = tree_view->priv->columns; list; list = list->next)
8131     {
8132       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8133         {
8134           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8135           break;
8136         }
8137     }
8138
8139   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8140 }
8141
8142 static void
8143 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8144                                GtkAdjustment *hadj,
8145                                GtkAdjustment *vadj)
8146 {
8147   gboolean need_adjust = FALSE;
8148
8149   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8150
8151   if (hadj)
8152     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8153   else
8154     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8155   if (vadj)
8156     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8157   else
8158     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8159
8160   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8161     {
8162       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8163                                             gtk_tree_view_adjustment_changed,
8164                                             tree_view);
8165       g_object_unref (tree_view->priv->hadjustment);
8166     }
8167
8168   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8169     {
8170       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8171                                             gtk_tree_view_adjustment_changed,
8172                                             tree_view);
8173       g_object_unref (tree_view->priv->vadjustment);
8174     }
8175
8176   if (tree_view->priv->hadjustment != hadj)
8177     {
8178       tree_view->priv->hadjustment = hadj;
8179       g_object_ref_sink (tree_view->priv->hadjustment);
8180
8181       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8182                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8183                         tree_view);
8184       need_adjust = TRUE;
8185     }
8186
8187   if (tree_view->priv->vadjustment != vadj)
8188     {
8189       tree_view->priv->vadjustment = vadj;
8190       g_object_ref_sink (tree_view->priv->vadjustment);
8191
8192       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8193                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8194                         tree_view);
8195       need_adjust = TRUE;
8196     }
8197
8198   if (need_adjust)
8199     gtk_tree_view_adjustment_changed (NULL, tree_view);
8200 }
8201
8202
8203 static gboolean
8204 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8205                                 GtkMovementStep    step,
8206                                 gint               count)
8207 {
8208   GdkModifierType state;
8209
8210   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8211   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8212                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8213                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8214                         step == GTK_MOVEMENT_PAGES ||
8215                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8216
8217   if (tree_view->priv->tree == NULL)
8218     return FALSE;
8219   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8220     return FALSE;
8221
8222   gtk_tree_view_stop_editing (tree_view, FALSE);
8223   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8224   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8225
8226   if (gtk_get_current_event_state (&state))
8227     {
8228       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8229         tree_view->priv->ctrl_pressed = TRUE;
8230       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8231         tree_view->priv->shift_pressed = TRUE;
8232     }
8233   /* else we assume not pressed */
8234
8235   switch (step)
8236     {
8237       /* currently we make no distinction.  When we go bi-di, we need to */
8238     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8239     case GTK_MOVEMENT_VISUAL_POSITIONS:
8240       gtk_tree_view_move_cursor_left_right (tree_view, count);
8241       break;
8242     case GTK_MOVEMENT_DISPLAY_LINES:
8243       gtk_tree_view_move_cursor_up_down (tree_view, count);
8244       break;
8245     case GTK_MOVEMENT_PAGES:
8246       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8247       break;
8248     case GTK_MOVEMENT_BUFFER_ENDS:
8249       gtk_tree_view_move_cursor_start_end (tree_view, count);
8250       break;
8251     default:
8252       g_assert_not_reached ();
8253     }
8254
8255   tree_view->priv->ctrl_pressed = FALSE;
8256   tree_view->priv->shift_pressed = FALSE;
8257
8258   return TRUE;
8259 }
8260
8261 static void
8262 gtk_tree_view_put (GtkTreeView *tree_view,
8263                    GtkWidget   *child_widget,
8264                    /* in bin_window coordinates */
8265                    gint         x,
8266                    gint         y,
8267                    gint         width,
8268                    gint         height)
8269 {
8270   GtkTreeViewChild *child;
8271
8272   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8273   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8274
8275   child = g_slice_new (GtkTreeViewChild);
8276
8277   child->widget = child_widget;
8278   child->x = x;
8279   child->y = y;
8280   child->width = width;
8281   child->height = height;
8282
8283   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8284
8285   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8286     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8287
8288   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8289 }
8290
8291 void
8292 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8293                                   GtkWidget   *widget,
8294                                   /* in tree coordinates */
8295                                   gint         x,
8296                                   gint         y,
8297                                   gint         width,
8298                                   gint         height)
8299 {
8300   GtkTreeViewChild *child = NULL;
8301   GList *list;
8302   GdkRectangle allocation;
8303
8304   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8305   g_return_if_fail (GTK_IS_WIDGET (widget));
8306
8307   for (list = tree_view->priv->children; list; list = list->next)
8308     {
8309       if (((GtkTreeViewChild *)list->data)->widget == widget)
8310         {
8311           child = list->data;
8312           break;
8313         }
8314     }
8315   if (child == NULL)
8316     return;
8317
8318   allocation.x = child->x = x;
8319   allocation.y = child->y = y;
8320   allocation.width = child->width = width;
8321   allocation.height = child->height = height;
8322
8323   if (gtk_widget_get_realized (widget))
8324     gtk_widget_size_allocate (widget, &allocation);
8325 }
8326
8327
8328 /* TreeModel Callbacks
8329  */
8330
8331 static void
8332 gtk_tree_view_row_changed (GtkTreeModel *model,
8333                            GtkTreePath  *path,
8334                            GtkTreeIter  *iter,
8335                            gpointer      data)
8336 {
8337   GtkTreeView *tree_view = (GtkTreeView *)data;
8338   GtkRBTree *tree;
8339   GtkRBNode *node;
8340   gboolean free_path = FALSE;
8341   GList *list;
8342   GtkTreePath *cursor_path;
8343
8344   g_return_if_fail (path != NULL || iter != NULL);
8345
8346   if (tree_view->priv->cursor != NULL)
8347     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8348   else
8349     cursor_path = NULL;
8350
8351   if (tree_view->priv->edited_column &&
8352       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8353     gtk_tree_view_stop_editing (tree_view, TRUE);
8354
8355   if (cursor_path != NULL)
8356     gtk_tree_path_free (cursor_path);
8357
8358   if (path == NULL)
8359     {
8360       path = gtk_tree_model_get_path (model, iter);
8361       free_path = TRUE;
8362     }
8363   else if (iter == NULL)
8364     gtk_tree_model_get_iter (model, iter, path);
8365
8366   if (_gtk_tree_view_find_node (tree_view,
8367                                 path,
8368                                 &tree,
8369                                 &node))
8370     /* We aren't actually showing the node */
8371     goto done;
8372
8373   if (tree == NULL)
8374     goto done;
8375
8376   if (tree_view->priv->fixed_height_mode
8377       && tree_view->priv->fixed_height >= 0)
8378     {
8379       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8380       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8381         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8382     }
8383   else
8384     {
8385       _gtk_rbtree_node_mark_invalid (tree, node);
8386       for (list = tree_view->priv->columns; list; list = list->next)
8387         {
8388           GtkTreeViewColumn *column;
8389
8390           column = list->data;
8391           if (! column->visible)
8392             continue;
8393
8394           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8395             {
8396               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8397             }
8398         }
8399     }
8400
8401  done:
8402   if (!tree_view->priv->fixed_height_mode &&
8403       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8404     install_presize_handler (tree_view);
8405   if (free_path)
8406     gtk_tree_path_free (path);
8407 }
8408
8409 static void
8410 gtk_tree_view_row_inserted (GtkTreeModel *model,
8411                             GtkTreePath  *path,
8412                             GtkTreeIter  *iter,
8413                             gpointer      data)
8414 {
8415   GtkTreeView *tree_view = (GtkTreeView *) data;
8416   gint *indices;
8417   GtkRBTree *tmptree, *tree;
8418   GtkRBNode *tmpnode = NULL;
8419   gint depth;
8420   gint i = 0;
8421   gint height;
8422   gboolean free_path = FALSE;
8423   gboolean node_visible = TRUE;
8424
8425   g_return_if_fail (path != NULL || iter != NULL);
8426
8427   if (tree_view->priv->fixed_height_mode
8428       && tree_view->priv->fixed_height >= 0)
8429     height = tree_view->priv->fixed_height;
8430   else
8431     height = 0;
8432
8433   if (path == NULL)
8434     {
8435       path = gtk_tree_model_get_path (model, iter);
8436       free_path = TRUE;
8437     }
8438   else if (iter == NULL)
8439     gtk_tree_model_get_iter (model, iter, path);
8440
8441   if (tree_view->priv->tree == NULL)
8442     tree_view->priv->tree = _gtk_rbtree_new ();
8443
8444   tmptree = tree = tree_view->priv->tree;
8445
8446   /* Update all row-references */
8447   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8448   depth = gtk_tree_path_get_depth (path);
8449   indices = gtk_tree_path_get_indices (path);
8450
8451   /* First, find the parent tree */
8452   while (i < depth - 1)
8453     {
8454       if (tmptree == NULL)
8455         {
8456           /* We aren't showing the node */
8457           node_visible = FALSE;
8458           goto done;
8459         }
8460
8461       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8462       if (tmpnode == NULL)
8463         {
8464           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8465                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8466                      "before the parent was inserted.");
8467           goto done;
8468         }
8469       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8470         {
8471           /* FIXME enforce correct behavior on model, probably */
8472           /* In theory, the model should have emitted has_child_toggled here.  We
8473            * try to catch it anyway, just to be safe, in case the model hasn't.
8474            */
8475           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8476                                                            tree,
8477                                                            tmpnode);
8478           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8479           gtk_tree_path_free (tmppath);
8480           goto done;
8481         }
8482
8483       tmptree = tmpnode->children;
8484       tree = tmptree;
8485       i++;
8486     }
8487
8488   if (tree == NULL)
8489     {
8490       node_visible = FALSE;
8491       goto done;
8492     }
8493
8494   /* ref the node */
8495   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8496   if (indices[depth - 1] == 0)
8497     {
8498       tmpnode = _gtk_rbtree_find_count (tree, 1);
8499       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8500     }
8501   else
8502     {
8503       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8504       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8505     }
8506
8507  done:
8508   if (height > 0)
8509     {
8510       if (tree)
8511         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8512
8513       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8514         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8515       else
8516         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8517     }
8518   else
8519     install_presize_handler (tree_view);
8520   if (free_path)
8521     gtk_tree_path_free (path);
8522 }
8523
8524 static void
8525 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8526                                      GtkTreePath  *path,
8527                                      GtkTreeIter  *iter,
8528                                      gpointer      data)
8529 {
8530   GtkTreeView *tree_view = (GtkTreeView *)data;
8531   GtkTreeIter real_iter;
8532   gboolean has_child;
8533   GtkRBTree *tree;
8534   GtkRBNode *node;
8535   gboolean free_path = FALSE;
8536
8537   g_return_if_fail (path != NULL || iter != NULL);
8538
8539   if (iter)
8540     real_iter = *iter;
8541
8542   if (path == NULL)
8543     {
8544       path = gtk_tree_model_get_path (model, iter);
8545       free_path = TRUE;
8546     }
8547   else if (iter == NULL)
8548     gtk_tree_model_get_iter (model, &real_iter, path);
8549
8550   if (_gtk_tree_view_find_node (tree_view,
8551                                 path,
8552                                 &tree,
8553                                 &node))
8554     /* We aren't actually showing the node */
8555     goto done;
8556
8557   if (tree == NULL)
8558     goto done;
8559
8560   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8561   /* Sanity check.
8562    */
8563   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8564     goto done;
8565
8566   if (has_child)
8567     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8568   else
8569     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8570
8571   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8572     {
8573       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8574       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8575         {
8576           GList *list;
8577
8578           for (list = tree_view->priv->columns; list; list = list->next)
8579             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8580               {
8581                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8582                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8583                 break;
8584               }
8585         }
8586       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8587     }
8588   else
8589     {
8590       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8591     }
8592
8593  done:
8594   if (free_path)
8595     gtk_tree_path_free (path);
8596 }
8597
8598 static void
8599 count_children_helper (GtkRBTree *tree,
8600                        GtkRBNode *node,
8601                        gpointer   data)
8602 {
8603   if (node->children)
8604     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8605   (*((gint *)data))++;
8606 }
8607
8608 static void
8609 check_selection_helper (GtkRBTree *tree,
8610                         GtkRBNode *node,
8611                         gpointer   data)
8612 {
8613   gint *value = (gint *)data;
8614
8615   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8616
8617   if (node->children && !*value)
8618     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8619 }
8620
8621 static void
8622 gtk_tree_view_row_deleted (GtkTreeModel *model,
8623                            GtkTreePath  *path,
8624                            gpointer      data)
8625 {
8626   GtkTreeView *tree_view = (GtkTreeView *)data;
8627   GtkRBTree *tree;
8628   GtkRBNode *node;
8629   GList *list;
8630   gint selection_changed = FALSE;
8631
8632   g_return_if_fail (path != NULL);
8633
8634   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8635
8636   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8637     return;
8638
8639   if (tree == NULL)
8640     return;
8641
8642   /* check if the selection has been changed */
8643   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8644                         check_selection_helper, &selection_changed);
8645
8646   for (list = tree_view->priv->columns; list; list = list->next)
8647     if (((GtkTreeViewColumn *)list->data)->visible &&
8648         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8649       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8650
8651   /* Ensure we don't have a dangling pointer to a dead node */
8652   ensure_unprelighted (tree_view);
8653
8654   /* Cancel editting if we've started */
8655   gtk_tree_view_stop_editing (tree_view, TRUE);
8656
8657   /* If we have a node expanded/collapsed timeout, remove it */
8658   remove_expand_collapse_timeout (tree_view);
8659
8660   if (tree_view->priv->destroy_count_func)
8661     {
8662       gint child_count = 0;
8663       if (node->children)
8664         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8665       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8666     }
8667
8668   if (tree->root->count == 1)
8669     {
8670       if (tree_view->priv->tree == tree)
8671         tree_view->priv->tree = NULL;
8672
8673       _gtk_rbtree_remove (tree);
8674     }
8675   else
8676     {
8677       _gtk_rbtree_remove_node (tree, node);
8678     }
8679
8680   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8681     {
8682       gtk_tree_row_reference_free (tree_view->priv->top_row);
8683       tree_view->priv->top_row = NULL;
8684     }
8685
8686   install_scroll_sync_handler (tree_view);
8687
8688   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8689
8690   if (selection_changed)
8691     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8692 }
8693
8694 static void
8695 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8696                               GtkTreePath  *parent,
8697                               GtkTreeIter  *iter,
8698                               gint         *new_order,
8699                               gpointer      data)
8700 {
8701   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8702   GtkRBTree *tree;
8703   GtkRBNode *node;
8704   gint len;
8705
8706   len = gtk_tree_model_iter_n_children (model, iter);
8707
8708   if (len < 2)
8709     return;
8710
8711   gtk_tree_row_reference_reordered (G_OBJECT (data),
8712                                     parent,
8713                                     iter,
8714                                     new_order);
8715
8716   if (_gtk_tree_view_find_node (tree_view,
8717                                 parent,
8718                                 &tree,
8719                                 &node))
8720     return;
8721
8722   /* We need to special case the parent path */
8723   if (tree == NULL)
8724     tree = tree_view->priv->tree;
8725   else
8726     tree = node->children;
8727
8728   if (tree == NULL)
8729     return;
8730
8731   if (tree_view->priv->edited_column)
8732     gtk_tree_view_stop_editing (tree_view, TRUE);
8733
8734   /* we need to be unprelighted */
8735   ensure_unprelighted (tree_view);
8736
8737   /* clear the timeout */
8738   cancel_arrow_animation (tree_view);
8739
8740   _gtk_rbtree_reorder (tree, new_order, len);
8741
8742   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8743
8744   gtk_tree_view_dy_to_top_row (tree_view);
8745 }
8746
8747
8748 /* Internal tree functions
8749  */
8750
8751
8752 static void
8753 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8754                                      GtkRBTree         *tree,
8755                                      GtkTreeViewColumn *column,
8756                                      gint              *x1,
8757                                      gint              *x2)
8758 {
8759   GtkTreeViewColumn *tmp_column = NULL;
8760   gint total_width;
8761   GList *list;
8762   gboolean rtl;
8763
8764   if (x1)
8765     *x1 = 0;
8766
8767   if (x2)
8768     *x2 = 0;
8769
8770   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8771
8772   total_width = 0;
8773   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8774        list;
8775        list = (rtl ? list->prev : list->next))
8776     {
8777       tmp_column = list->data;
8778
8779       if (tmp_column == column)
8780         break;
8781
8782       if (tmp_column->visible)
8783         total_width += tmp_column->width;
8784     }
8785
8786   if (tmp_column != column)
8787     {
8788       g_warning (G_STRLOC": passed-in column isn't in the tree");
8789       return;
8790     }
8791
8792   if (x1)
8793     *x1 = total_width;
8794
8795   if (x2)
8796     {
8797       if (column->visible)
8798         *x2 = total_width + column->width;
8799       else
8800         *x2 = total_width; /* width of 0 */
8801     }
8802 }
8803 static void
8804 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8805                                 GtkRBTree   *tree,
8806                                 gint        *x1,
8807                                 gint        *x2)
8808 {
8809   gint x_offset = 0;
8810   GList *list;
8811   GtkTreeViewColumn *tmp_column = NULL;
8812   gint total_width;
8813   gboolean indent_expanders;
8814   gboolean rtl;
8815
8816   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8817
8818   total_width = 0;
8819   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8820        list;
8821        list = (rtl ? list->prev : list->next))
8822     {
8823       tmp_column = list->data;
8824
8825       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8826         {
8827           if (rtl)
8828             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8829           else
8830             x_offset = total_width;
8831           break;
8832         }
8833
8834       if (tmp_column->visible)
8835         total_width += tmp_column->width;
8836     }
8837
8838   gtk_widget_style_get (GTK_WIDGET (tree_view),
8839                         "indent-expanders", &indent_expanders,
8840                         NULL);
8841
8842   if (indent_expanders)
8843     {
8844       if (rtl)
8845         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8846       else
8847         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8848     }
8849
8850   *x1 = x_offset;
8851
8852   if (tmp_column && tmp_column->visible)
8853     /* +1 because x2 isn't included in the range. */
8854     *x2 = *x1 + tree_view->priv->expander_size + 1;
8855   else
8856     *x2 = *x1;
8857 }
8858
8859 static void
8860 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8861                           GtkRBTree   *tree,
8862                           GtkTreeIter *iter,
8863                           gint         depth,
8864                           gboolean     recurse)
8865 {
8866   GtkRBNode *temp = NULL;
8867   GtkTreePath *path = NULL;
8868   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8869
8870   do
8871     {
8872       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8873       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8874
8875       if (tree_view->priv->fixed_height > 0)
8876         {
8877           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8878             {
8879               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8880               _gtk_rbtree_node_mark_valid (tree, temp);
8881             }
8882         }
8883
8884       if (is_list)
8885         continue;
8886
8887       if (recurse)
8888         {
8889           GtkTreeIter child;
8890
8891           if (!path)
8892             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8893           else
8894             gtk_tree_path_next (path);
8895
8896           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8897             {
8898               gboolean expand;
8899
8900               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8901
8902               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8903                   && !expand)
8904                 {
8905                   temp->children = _gtk_rbtree_new ();
8906                   temp->children->parent_tree = tree;
8907                   temp->children->parent_node = temp;
8908                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8909                 }
8910             }
8911         }
8912
8913       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8914         {
8915           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8916             temp->flags ^= GTK_RBNODE_IS_PARENT;
8917         }
8918     }
8919   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8920
8921   if (path)
8922     gtk_tree_path_free (path);
8923 }
8924
8925 /* Make sure the node is visible vertically */
8926 static void
8927 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8928                                   GtkRBTree   *tree,
8929                                   GtkRBNode   *node)
8930 {
8931   gint node_dy, height;
8932   GtkTreePath *path = NULL;
8933
8934   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8935     return;
8936
8937   /* just return if the node is visible, avoiding a costly expose */
8938   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8939   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8940   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8941       && node_dy >= tree_view->priv->vadjustment->value
8942       && node_dy + height <= (tree_view->priv->vadjustment->value
8943                               + tree_view->priv->vadjustment->page_size))
8944     return;
8945
8946   path = _gtk_tree_view_find_path (tree_view, tree, node);
8947   if (path)
8948     {
8949       /* We process updates because we want to clear old selected items when we scroll.
8950        * if this is removed, we get a "selection streak" at the bottom. */
8951       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8952       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8953       gtk_tree_path_free (path);
8954     }
8955 }
8956
8957 static void
8958 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8959                                     GtkTreeViewColumn *column,
8960                                     gboolean           focus_to_cell)
8961 {
8962   GtkAllocation allocation;
8963   gint x, width;
8964
8965   if (column == NULL)
8966     return;
8967
8968   gtk_widget_get_allocation (column->button, &allocation);
8969   x = allocation.x;
8970   width = allocation.width;
8971
8972   if (width > tree_view->priv->hadjustment->page_size)
8973     {
8974       /* The column is larger than the horizontal page size.  If the
8975        * column has cells which can be focussed individually, then we make
8976        * sure the cell which gets focus is fully visible (if even the
8977        * focus cell is bigger than the page size, we make sure the
8978        * left-hand side of the cell is visible).
8979        *
8980        * If the column does not have those so-called special cells, we
8981        * make sure the left-hand side of the column is visible.
8982        */
8983
8984       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8985         {
8986           GtkTreePath *cursor_path;
8987           GdkRectangle background_area, cell_area, focus_area;
8988
8989           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8990
8991           gtk_tree_view_get_cell_area (tree_view,
8992                                        cursor_path, column, &cell_area);
8993           gtk_tree_view_get_background_area (tree_view,
8994                                              cursor_path, column,
8995                                              &background_area);
8996
8997           gtk_tree_path_free (cursor_path);
8998
8999           _gtk_tree_view_column_get_focus_area (column,
9000                                                 &background_area,
9001                                                 &cell_area,
9002                                                 &focus_area);
9003
9004           x = focus_area.x;
9005           width = focus_area.width;
9006
9007           if (width < tree_view->priv->hadjustment->page_size)
9008             {
9009               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
9010                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
9011                                           x + width - tree_view->priv->hadjustment->page_size);
9012               else if (tree_view->priv->hadjustment->value > x)
9013                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9014             }
9015         }
9016
9017       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9018     }
9019   else
9020     {
9021       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
9022           gtk_adjustment_set_value (tree_view->priv->hadjustment,
9023                                     x + width - tree_view->priv->hadjustment->page_size);
9024       else if (tree_view->priv->hadjustment->value > x)
9025         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
9026   }
9027 }
9028
9029 /* This function could be more efficient.  I'll optimize it if profiling seems
9030  * to imply that it is important */
9031 GtkTreePath *
9032 _gtk_tree_view_find_path (GtkTreeView *tree_view,
9033                           GtkRBTree   *tree,
9034                           GtkRBNode   *node)
9035 {
9036   GtkTreePath *path;
9037   GtkRBTree *tmp_tree;
9038   GtkRBNode *tmp_node, *last;
9039   gint count;
9040
9041   path = gtk_tree_path_new ();
9042
9043   g_return_val_if_fail (node != NULL, path);
9044   g_return_val_if_fail (node != tree->nil, path);
9045
9046   count = 1 + node->left->count;
9047
9048   last = node;
9049   tmp_node = node->parent;
9050   tmp_tree = tree;
9051   while (tmp_tree)
9052     {
9053       while (tmp_node != tmp_tree->nil)
9054         {
9055           if (tmp_node->right == last)
9056             count += 1 + tmp_node->left->count;
9057           last = tmp_node;
9058           tmp_node = tmp_node->parent;
9059         }
9060       gtk_tree_path_prepend_index (path, count - 1);
9061       last = tmp_tree->parent_node;
9062       tmp_tree = tmp_tree->parent_tree;
9063       if (last)
9064         {
9065           count = 1 + last->left->count;
9066           tmp_node = last->parent;
9067         }
9068     }
9069   return path;
9070 }
9071
9072 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9073  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9074  * both set to NULL.
9075  */
9076 gboolean
9077 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9078                           GtkTreePath  *path,
9079                           GtkRBTree   **tree,
9080                           GtkRBNode   **node)
9081 {
9082   GtkRBNode *tmpnode = NULL;
9083   GtkRBTree *tmptree = tree_view->priv->tree;
9084   gint *indices = gtk_tree_path_get_indices (path);
9085   gint depth = gtk_tree_path_get_depth (path);
9086   gint i = 0;
9087
9088   *node = NULL;
9089   *tree = NULL;
9090
9091   if (depth == 0 || tmptree == NULL)
9092     return FALSE;
9093   do
9094     {
9095       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9096       ++i;
9097       if (tmpnode == NULL)
9098         {
9099           *tree = NULL;
9100           *node = NULL;
9101           return FALSE;
9102         }
9103       if (i >= depth)
9104         {
9105           *tree = tmptree;
9106           *node = tmpnode;
9107           return FALSE;
9108         }
9109       *tree = tmptree;
9110       *node = tmpnode;
9111       tmptree = tmpnode->children;
9112       if (tmptree == NULL)
9113         return TRUE;
9114     }
9115   while (1);
9116 }
9117
9118 static gboolean
9119 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9120                                   GtkTreeViewColumn *column)
9121 {
9122   GList *list;
9123
9124   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9125     return FALSE;
9126
9127   if (tree_view->priv->expander_column != NULL)
9128     {
9129       if (tree_view->priv->expander_column == column)
9130         return TRUE;
9131       return FALSE;
9132     }
9133   else
9134     {
9135       for (list = tree_view->priv->columns;
9136            list;
9137            list = list->next)
9138         if (((GtkTreeViewColumn *)list->data)->visible)
9139           break;
9140       if (list && list->data == column)
9141         return TRUE;
9142     }
9143   return FALSE;
9144 }
9145
9146 static void
9147 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9148                                 guint           keyval,
9149                                 guint           modmask,
9150                                 gboolean        add_shifted_binding,
9151                                 GtkMovementStep step,
9152                                 gint            count)
9153 {
9154
9155   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9156                                 "move-cursor", 2,
9157                                 G_TYPE_ENUM, step,
9158                                 G_TYPE_INT, count);
9159
9160   if (add_shifted_binding)
9161     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9162                                   "move-cursor", 2,
9163                                   G_TYPE_ENUM, step,
9164                                   G_TYPE_INT, count);
9165
9166   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9167    return;
9168
9169   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9170                                 "move-cursor", 2,
9171                                 G_TYPE_ENUM, step,
9172                                 G_TYPE_INT, count);
9173
9174   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9175                                 "move-cursor", 2,
9176                                 G_TYPE_ENUM, step,
9177                                 G_TYPE_INT, count);
9178 }
9179
9180 static gint
9181 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9182                                  GtkTreeIter  *iter,
9183                                  GtkRBTree    *tree,
9184                                  GtkRBNode    *node)
9185 {
9186   gint retval = FALSE;
9187   do
9188     {
9189       g_return_val_if_fail (node != NULL, FALSE);
9190
9191       if (node->children)
9192         {
9193           GtkTreeIter child;
9194           GtkRBTree *new_tree;
9195           GtkRBNode *new_node;
9196
9197           new_tree = node->children;
9198           new_node = new_tree->root;
9199
9200           while (new_node && new_node->left != new_tree->nil)
9201             new_node = new_node->left;
9202
9203           if (!gtk_tree_model_iter_children (model, &child, iter))
9204             return FALSE;
9205
9206           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9207         }
9208
9209       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9210         retval = TRUE;
9211       gtk_tree_model_unref_node (model, iter);
9212       node = _gtk_rbtree_next (tree, node);
9213     }
9214   while (gtk_tree_model_iter_next (model, iter));
9215
9216   return retval;
9217 }
9218
9219 static gint
9220 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9221                                               GtkRBTree   *tree)
9222 {
9223   GtkTreeIter iter;
9224   GtkTreePath *path;
9225   GtkRBNode *node;
9226   gint retval;
9227
9228   if (!tree)
9229     return FALSE;
9230
9231   node = tree->root;
9232   while (node && node->left != tree->nil)
9233     node = node->left;
9234
9235   g_return_val_if_fail (node != NULL, FALSE);
9236   path = _gtk_tree_view_find_path (tree_view, tree, node);
9237   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9238                            &iter, path);
9239   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9240   gtk_tree_path_free (path);
9241
9242   return retval;
9243 }
9244
9245 static void
9246 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9247                                     GtkTreeViewColumn *column)
9248 {
9249   GtkTreeViewColumn *left_column;
9250   GtkTreeViewColumn *cur_column = NULL;
9251   GtkTreeViewColumnReorder *reorder;
9252   gboolean rtl;
9253   GList *tmp_list;
9254   gint left;
9255
9256   /* We want to precalculate the motion list such that we know what column slots
9257    * are available.
9258    */
9259   left_column = NULL;
9260   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9261
9262   /* First, identify all possible drop spots */
9263   if (rtl)
9264     tmp_list = g_list_last (tree_view->priv->columns);
9265   else
9266     tmp_list = g_list_first (tree_view->priv->columns);
9267
9268   while (tmp_list)
9269     {
9270       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9271       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9272
9273       if (cur_column->visible == FALSE)
9274         continue;
9275
9276       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9277       if (left_column != column && cur_column != column &&
9278           tree_view->priv->column_drop_func &&
9279           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9280         {
9281           left_column = cur_column;
9282           continue;
9283         }
9284       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9285       reorder->left_column = left_column;
9286       left_column = reorder->right_column = cur_column;
9287
9288       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9289     }
9290
9291   /* Add the last one */
9292   if (tree_view->priv->column_drop_func == NULL ||
9293       ((left_column != column) &&
9294        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9295     {
9296       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9297       reorder->left_column = left_column;
9298       reorder->right_column = NULL;
9299       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9300     }
9301
9302   /* We quickly check to see if it even makes sense to reorder columns. */
9303   /* If there is nothing that can be moved, then we return */
9304
9305   if (tree_view->priv->column_drag_info == NULL)
9306     return;
9307
9308   /* We know there are always 2 slots possbile, as you can always return column. */
9309   /* If that's all there is, return */
9310   if (tree_view->priv->column_drag_info->next == NULL ||
9311       (tree_view->priv->column_drag_info->next->next == NULL &&
9312        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9313        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9314     {
9315       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9316         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9317       g_list_free (tree_view->priv->column_drag_info);
9318       tree_view->priv->column_drag_info = NULL;
9319       return;
9320     }
9321   /* We fill in the ranges for the columns, now that we've isolated them */
9322   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9323
9324   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9325     {
9326       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9327
9328       reorder->left_align = left;
9329       if (tmp_list->next != NULL)
9330         {
9331           GtkAllocation right_allocation, left_allocation;
9332
9333           g_assert (tmp_list->next->data);
9334
9335           gtk_widget_get_allocation (reorder->right_column->button, &right_allocation);
9336           gtk_widget_get_allocation (((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button, &left_allocation);
9337           left = reorder->right_align = (right_allocation.x + right_allocation.width + left_allocation.x) / 2;
9338         }
9339       else
9340         {
9341           gint width;
9342
9343           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9344           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9345         }
9346     }
9347 }
9348
9349 void
9350 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9351                                   GtkTreeViewColumn *column,
9352                                   GdkDevice         *device)
9353 {
9354   GdkEvent *send_event;
9355   GtkAllocation allocation;
9356   GtkAllocation button_allocation;
9357   gint x, y, width, height;
9358   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9359   GdkDisplay *display = gdk_screen_get_display (screen);
9360
9361   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9362   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9363
9364   gtk_tree_view_set_column_drag_info (tree_view, column);
9365
9366   if (tree_view->priv->column_drag_info == NULL)
9367     return;
9368
9369   if (tree_view->priv->drag_window == NULL)
9370     {
9371       GdkWindowAttr attributes;
9372       guint attributes_mask;
9373
9374       gtk_widget_get_allocation (column->button, &button_allocation);
9375
9376       attributes.window_type = GDK_WINDOW_CHILD;
9377       attributes.wclass = GDK_INPUT_OUTPUT;
9378       attributes.x = button_allocation.x;
9379       attributes.y = 0;
9380       attributes.width = button_allocation.width;
9381       attributes.height = button_allocation.height;
9382       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9383       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9384       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9385       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9386
9387       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9388                                                      &attributes,
9389                                                      attributes_mask);
9390       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9391     }
9392
9393   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9394   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9395
9396   gtk_grab_remove (column->button);
9397
9398   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9399   send_event->crossing.send_event = TRUE;
9400   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9401   send_event->crossing.subwindow = NULL;
9402   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9403   send_event->crossing.time = GDK_CURRENT_TIME;
9404   gdk_event_set_device (send_event, device);
9405
9406   gtk_propagate_event (column->button, send_event);
9407   gdk_event_free (send_event);
9408
9409   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9410   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9411   send_event->button.send_event = TRUE;
9412   send_event->button.time = GDK_CURRENT_TIME;
9413   send_event->button.x = -1;
9414   send_event->button.y = -1;
9415   send_event->button.axes = NULL;
9416   send_event->button.state = 0;
9417   send_event->button.button = 1;
9418   send_event->button.x_root = 0;
9419   send_event->button.y_root = 0;
9420   gdk_event_set_device (send_event, device);
9421
9422   gtk_propagate_event (column->button, send_event);
9423   gdk_event_free (send_event);
9424
9425   /* Kids, don't try this at home */
9426   g_object_ref (column->button);
9427   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9428   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9429   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9430   g_object_unref (column->button);
9431
9432   gtk_widget_get_allocation (column->button, &button_allocation);
9433   tree_view->priv->drag_column_x = button_allocation.x;
9434   allocation = button_allocation;
9435   allocation.x = 0;
9436   gtk_widget_size_allocate (column->button, &allocation);
9437   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9438
9439   tree_view->priv->drag_column = column;
9440   gdk_window_show (tree_view->priv->drag_window);
9441
9442   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9443   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9444
9445   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9446   while (gtk_events_pending ())
9447     gtk_main_iteration ();
9448
9449   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9450   gdk_pointer_grab (tree_view->priv->drag_window,
9451                     FALSE,
9452                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9453                     NULL, NULL, GDK_CURRENT_TIME);
9454   gdk_keyboard_grab (tree_view->priv->drag_window,
9455                      FALSE,
9456                      GDK_CURRENT_TIME);
9457 }
9458
9459 static void
9460 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9461                                 GtkRBTree          *tree,
9462                                 GtkRBNode          *node,
9463                                 const GdkRectangle *clip_rect)
9464 {
9465   GtkAllocation allocation;
9466   GdkRectangle rect;
9467
9468   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9469     return;
9470
9471   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9472   rect.x = 0;
9473   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, allocation.width));
9474
9475   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9476   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9477
9478   if (clip_rect)
9479     {
9480       GdkRectangle new_rect;
9481
9482       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9483
9484       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9485     }
9486   else
9487     {
9488       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9489     }
9490 }
9491
9492 void
9493 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9494                                 GtkRBTree          *tree,
9495                                 GtkRBNode          *node,
9496                                 const GdkRectangle *clip_rect)
9497 {
9498   GtkAllocation allocation;
9499   GdkRectangle rect;
9500
9501   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9502     return;
9503
9504   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
9505   rect.x = 0;
9506   rect.width = MAX (tree_view->priv->width, allocation.width);
9507
9508   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9509   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9510
9511   if (clip_rect)
9512     {
9513       GdkRectangle new_rect;
9514
9515       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9516
9517       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9518     }
9519   else
9520     {
9521       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9522     }
9523 }
9524
9525 static void
9526 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9527                                GtkTreePath        *path,
9528                                const GdkRectangle *clip_rect)
9529 {
9530   GtkRBTree *tree = NULL;
9531   GtkRBNode *node = NULL;
9532
9533   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9534
9535   if (tree)
9536     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9537 }
9538
9539 /* x and y are the mouse position
9540  */
9541 static void
9542 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9543                           GtkRBTree   *tree,
9544                           GtkRBNode   *node,
9545                           /* in bin_window coordinates */
9546                           gint         x,
9547                           gint         y)
9548 {
9549   GdkRectangle area;
9550   GtkStateType state;
9551   GtkWidget *widget;
9552   gint x_offset = 0;
9553   gint x2;
9554   gint vertical_separator;
9555   gint expander_size;
9556   GtkExpanderStyle expander_style;
9557
9558   widget = GTK_WIDGET (tree_view);
9559
9560   gtk_widget_style_get (widget,
9561                         "vertical-separator", &vertical_separator,
9562                         NULL);
9563   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9564
9565   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9566     return;
9567
9568   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9569
9570   area.x = x_offset;
9571   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9572   area.width = expander_size + 2;
9573   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9574
9575   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9576     {
9577       state = GTK_STATE_INSENSITIVE;
9578     }
9579   else if (node == tree_view->priv->button_pressed_node)
9580     {
9581       if (x >= area.x && x <= (area.x + area.width) &&
9582           y >= area.y && y <= (area.y + area.height))
9583         state = GTK_STATE_ACTIVE;
9584       else
9585         state = GTK_STATE_NORMAL;
9586     }
9587   else
9588     {
9589       if (node == tree_view->priv->prelight_node &&
9590           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9591         state = GTK_STATE_PRELIGHT;
9592       else
9593         state = GTK_STATE_NORMAL;
9594     }
9595
9596   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9597     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9598   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9599     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9600   else if (node->children != NULL)
9601     expander_style = GTK_EXPANDER_EXPANDED;
9602   else
9603     expander_style = GTK_EXPANDER_COLLAPSED;
9604
9605   gtk_paint_expander (gtk_widget_get_style (widget),
9606                       tree_view->priv->bin_window,
9607                       state,
9608                       &area,
9609                       widget,
9610                       "treeview",
9611                       area.x + area.width / 2,
9612                       area.y + area.height / 2,
9613                       expander_style);
9614 }
9615
9616 static void
9617 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9618
9619 {
9620   GtkTreePath *cursor_path;
9621
9622   if ((tree_view->priv->tree == NULL) ||
9623       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9624     return;
9625
9626   cursor_path = NULL;
9627   if (tree_view->priv->cursor)
9628     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9629
9630   if (cursor_path == NULL)
9631     {
9632       /* Consult the selection before defaulting to the
9633        * first focusable element
9634        */
9635       GList *selected_rows;
9636       GtkTreeModel *model;
9637       GtkTreeSelection *selection;
9638
9639       selection = gtk_tree_view_get_selection (tree_view);
9640       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9641
9642       if (selected_rows)
9643         {
9644           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9645           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9646           g_list_free (selected_rows);
9647         }
9648       else
9649         {
9650           cursor_path = gtk_tree_path_new_first ();
9651           search_first_focusable_path (tree_view, &cursor_path,
9652                                        TRUE, NULL, NULL);
9653         }
9654
9655       gtk_tree_row_reference_free (tree_view->priv->cursor);
9656       tree_view->priv->cursor = NULL;
9657
9658       if (cursor_path)
9659         {
9660           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9661             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9662           else
9663             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9664         }
9665     }
9666
9667   if (cursor_path)
9668     {
9669       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9670
9671       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9672       gtk_tree_path_free (cursor_path);
9673
9674       if (tree_view->priv->focus_column == NULL)
9675         {
9676           GList *list;
9677           for (list = tree_view->priv->columns; list; list = list->next)
9678             {
9679               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9680                 {
9681                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9682                   break;
9683                 }
9684             }
9685         }
9686     }
9687 }
9688
9689 static void
9690 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9691                                    gint         count)
9692 {
9693   gint selection_count;
9694   GtkRBTree *cursor_tree = NULL;
9695   GtkRBNode *cursor_node = NULL;
9696   GtkRBTree *new_cursor_tree = NULL;
9697   GtkRBNode *new_cursor_node = NULL;
9698   GtkTreePath *cursor_path = NULL;
9699   gboolean grab_focus = TRUE;
9700   gboolean selectable;
9701
9702   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9703     return;
9704
9705   cursor_path = NULL;
9706   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9707     /* FIXME: we lost the cursor; should we get the first? */
9708     return;
9709
9710   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9711   _gtk_tree_view_find_node (tree_view, cursor_path,
9712                             &cursor_tree, &cursor_node);
9713
9714   if (cursor_tree == NULL)
9715     /* FIXME: we lost the cursor; should we get the first? */
9716     return;
9717
9718   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9719   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9720                                                       cursor_node,
9721                                                       cursor_path);
9722
9723   if (selection_count == 0
9724       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9725       && !tree_view->priv->ctrl_pressed
9726       && selectable)
9727     {
9728       /* Don't move the cursor, but just select the current node */
9729       new_cursor_tree = cursor_tree;
9730       new_cursor_node = cursor_node;
9731     }
9732   else
9733     {
9734       if (count == -1)
9735         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9736                                &new_cursor_tree, &new_cursor_node);
9737       else
9738         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9739                                &new_cursor_tree, &new_cursor_node);
9740     }
9741
9742   gtk_tree_path_free (cursor_path);
9743
9744   if (new_cursor_node)
9745     {
9746       cursor_path = _gtk_tree_view_find_path (tree_view,
9747                                               new_cursor_tree, new_cursor_node);
9748
9749       search_first_focusable_path (tree_view, &cursor_path,
9750                                    (count != -1),
9751                                    &new_cursor_tree,
9752                                    &new_cursor_node);
9753
9754       if (cursor_path)
9755         gtk_tree_path_free (cursor_path);
9756     }
9757
9758   /*
9759    * If the list has only one item and multi-selection is set then select
9760    * the row (if not yet selected).
9761    */
9762   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9763       new_cursor_node == NULL)
9764     {
9765       if (count == -1)
9766         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9767                                &new_cursor_tree, &new_cursor_node);
9768       else
9769         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9770                                &new_cursor_tree, &new_cursor_node);
9771
9772       if (new_cursor_node == NULL
9773           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9774         {
9775           new_cursor_node = cursor_node;
9776           new_cursor_tree = cursor_tree;
9777         }
9778       else
9779         {
9780           new_cursor_node = NULL;
9781         }
9782     }
9783
9784   if (new_cursor_node)
9785     {
9786       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9787       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9788       gtk_tree_path_free (cursor_path);
9789     }
9790   else
9791     {
9792       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9793
9794       if (!tree_view->priv->shift_pressed)
9795         {
9796           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9797                                           count < 0 ?
9798                                           GTK_DIR_UP : GTK_DIR_DOWN))
9799             {
9800               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9801
9802               if (toplevel)
9803                 gtk_widget_child_focus (toplevel,
9804                                         count < 0 ?
9805                                         GTK_DIR_TAB_BACKWARD :
9806                                         GTK_DIR_TAB_FORWARD);
9807
9808               grab_focus = FALSE;
9809             }
9810         }
9811       else
9812         {
9813           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9814         }
9815     }
9816
9817   if (grab_focus)
9818     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9819 }
9820
9821 static void
9822 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9823                                         gint         count)
9824 {
9825   GtkRBTree *cursor_tree = NULL;
9826   GtkRBNode *cursor_node = NULL;
9827   GtkTreePath *old_cursor_path = NULL;
9828   GtkTreePath *cursor_path = NULL;
9829   GtkRBTree *start_cursor_tree = NULL;
9830   GtkRBNode *start_cursor_node = NULL;
9831   gint y;
9832   gint window_y;
9833   gint vertical_separator;
9834
9835   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9836     return;
9837
9838   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9839     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9840   else
9841     /* This is sorta weird.  Focus in should give us a cursor */
9842     return;
9843
9844   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9845   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9846                             &cursor_tree, &cursor_node);
9847
9848   if (cursor_tree == NULL)
9849     {
9850       /* FIXME: we lost the cursor.  Should we try to get one? */
9851       gtk_tree_path_free (old_cursor_path);
9852       return;
9853     }
9854   g_return_if_fail (cursor_node != NULL);
9855
9856   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9857   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9858   y += tree_view->priv->cursor_offset;
9859   y += count * (int)tree_view->priv->vadjustment->page_increment;
9860   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9861
9862   if (y >= tree_view->priv->height)
9863     y = tree_view->priv->height - 1;
9864
9865   tree_view->priv->cursor_offset =
9866     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9867                              &cursor_tree, &cursor_node);
9868
9869   if (cursor_tree == NULL)
9870     {
9871       /* FIXME: we lost the cursor.  Should we try to get one? */
9872       gtk_tree_path_free (old_cursor_path);
9873       return;
9874     }
9875
9876   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9877     {
9878       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9879                              &cursor_tree, &cursor_node);
9880       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9881     }
9882
9883   y -= tree_view->priv->cursor_offset;
9884   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9885
9886   start_cursor_tree = cursor_tree;
9887   start_cursor_node = cursor_node;
9888
9889   if (! search_first_focusable_path (tree_view, &cursor_path,
9890                                      (count != -1),
9891                                      &cursor_tree, &cursor_node))
9892     {
9893       /* It looks like we reached the end of the view without finding
9894        * a focusable row.  We will step backwards to find the last
9895        * focusable row.
9896        */
9897       cursor_tree = start_cursor_tree;
9898       cursor_node = start_cursor_node;
9899       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9900
9901       search_first_focusable_path (tree_view, &cursor_path,
9902                                    (count == -1),
9903                                    &cursor_tree, &cursor_node);
9904     }
9905
9906   if (!cursor_path)
9907     goto cleanup;
9908
9909   /* update y */
9910   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9911
9912   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9913
9914   y -= window_y;
9915   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9916   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9917   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9918
9919   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9920     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9921
9922   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9923
9924 cleanup:
9925   gtk_tree_path_free (old_cursor_path);
9926   gtk_tree_path_free (cursor_path);
9927 }
9928
9929 static void
9930 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9931                                       gint         count)
9932 {
9933   GtkRBTree *cursor_tree = NULL;
9934   GtkRBNode *cursor_node = NULL;
9935   GtkTreePath *cursor_path = NULL;
9936   GtkTreeViewColumn *column;
9937   GtkTreeIter iter;
9938   GList *list;
9939   gboolean found_column = FALSE;
9940   gboolean rtl;
9941
9942   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9943
9944   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9945     return;
9946
9947   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9948     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9949   else
9950     return;
9951
9952   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9953   if (cursor_tree == NULL)
9954     return;
9955   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9956     {
9957       gtk_tree_path_free (cursor_path);
9958       return;
9959     }
9960   gtk_tree_path_free (cursor_path);
9961
9962   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9963   if (tree_view->priv->focus_column)
9964     {
9965       for (; list; list = (rtl ? list->prev : list->next))
9966         {
9967           if (list->data == tree_view->priv->focus_column)
9968             break;
9969         }
9970     }
9971
9972   while (list)
9973     {
9974       gboolean left, right;
9975
9976       column = list->data;
9977       if (column->visible == FALSE)
9978         goto loop_end;
9979
9980       gtk_tree_view_column_cell_set_cell_data (column,
9981                                                tree_view->priv->model,
9982                                                &iter,
9983                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9984                                                cursor_node->children?TRUE:FALSE);
9985
9986       if (rtl)
9987         {
9988           right = list->prev ? TRUE : FALSE;
9989           left = list->next ? TRUE : FALSE;
9990         }
9991       else
9992         {
9993           left = list->prev ? TRUE : FALSE;
9994           right = list->next ? TRUE : FALSE;
9995         }
9996
9997       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9998         {
9999           tree_view->priv->focus_column = column;
10000           found_column = TRUE;
10001           break;
10002         }
10003     loop_end:
10004       if (count == 1)
10005         list = rtl ? list->prev : list->next;
10006       else
10007         list = rtl ? list->next : list->prev;
10008     }
10009
10010   if (found_column)
10011     {
10012       if (!gtk_tree_view_has_special_cell (tree_view))
10013         _gtk_tree_view_queue_draw_node (tree_view,
10014                                         cursor_tree,
10015                                         cursor_node,
10016                                         NULL);
10017       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10018       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10019     }
10020   else
10021     {
10022       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10023     }
10024
10025   gtk_tree_view_clamp_column_visible (tree_view,
10026                                       tree_view->priv->focus_column, TRUE);
10027 }
10028
10029 static void
10030 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
10031                                      gint         count)
10032 {
10033   GtkRBTree *cursor_tree;
10034   GtkRBNode *cursor_node;
10035   GtkTreePath *path;
10036   GtkTreePath *old_path;
10037
10038   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10039     return;
10040
10041   g_return_if_fail (tree_view->priv->tree != NULL);
10042
10043   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
10044
10045   cursor_tree = tree_view->priv->tree;
10046   cursor_node = cursor_tree->root;
10047
10048   if (count == -1)
10049     {
10050       while (cursor_node && cursor_node->left != cursor_tree->nil)
10051         cursor_node = cursor_node->left;
10052
10053       /* Now go forward to find the first focusable row. */
10054       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10055       search_first_focusable_path (tree_view, &path,
10056                                    TRUE, &cursor_tree, &cursor_node);
10057     }
10058   else
10059     {
10060       do
10061         {
10062           while (cursor_node && cursor_node->right != cursor_tree->nil)
10063             cursor_node = cursor_node->right;
10064           if (cursor_node->children == NULL)
10065             break;
10066
10067           cursor_tree = cursor_node->children;
10068           cursor_node = cursor_tree->root;
10069         }
10070       while (1);
10071
10072       /* Now go backwards to find last focusable row. */
10073       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
10074       search_first_focusable_path (tree_view, &path,
10075                                    FALSE, &cursor_tree, &cursor_node);
10076     }
10077
10078   if (!path)
10079     goto cleanup;
10080
10081   if (gtk_tree_path_compare (old_path, path))
10082     {
10083       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10084       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10085     }
10086   else
10087     {
10088       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10089     }
10090
10091 cleanup:
10092   gtk_tree_path_free (old_path);
10093   gtk_tree_path_free (path);
10094 }
10095
10096 static gboolean
10097 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10098 {
10099   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10100     return FALSE;
10101
10102   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10103     return FALSE;
10104
10105   gtk_tree_selection_select_all (tree_view->priv->selection);
10106
10107   return TRUE;
10108 }
10109
10110 static gboolean
10111 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10112 {
10113   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10114     return FALSE;
10115
10116   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10117     return FALSE;
10118
10119   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10120
10121   return TRUE;
10122 }
10123
10124 static gboolean
10125 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10126                                       gboolean     start_editing)
10127 {
10128   GtkRBTree *new_tree = NULL;
10129   GtkRBNode *new_node = NULL;
10130   GtkRBTree *cursor_tree = NULL;
10131   GtkRBNode *cursor_node = NULL;
10132   GtkTreePath *cursor_path = NULL;
10133   GtkTreeSelectMode mode = 0;
10134
10135   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10136     return FALSE;
10137
10138   if (tree_view->priv->cursor)
10139     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10140
10141   if (cursor_path == NULL)
10142     return FALSE;
10143
10144   _gtk_tree_view_find_node (tree_view, cursor_path,
10145                             &cursor_tree, &cursor_node);
10146
10147   if (cursor_tree == NULL)
10148     {
10149       gtk_tree_path_free (cursor_path);
10150       return FALSE;
10151     }
10152
10153   if (!tree_view->priv->shift_pressed && start_editing &&
10154       tree_view->priv->focus_column)
10155     {
10156       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10157         {
10158           gtk_tree_path_free (cursor_path);
10159           return TRUE;
10160         }
10161     }
10162
10163   if (tree_view->priv->ctrl_pressed)
10164     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10165   if (tree_view->priv->shift_pressed)
10166     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10167
10168   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10169                                             cursor_node,
10170                                             cursor_tree,
10171                                             cursor_path,
10172                                             mode,
10173                                             FALSE);
10174
10175   /* We bail out if the original (tree, node) don't exist anymore after
10176    * handling the selection-changed callback.  We do return TRUE because
10177    * the key press has been handled at this point.
10178    */
10179   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10180
10181   if (cursor_tree != new_tree || cursor_node != new_node)
10182     return FALSE;
10183
10184   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10185
10186   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10187   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10188
10189   if (!tree_view->priv->shift_pressed)
10190     gtk_tree_view_row_activated (tree_view, cursor_path,
10191                                  tree_view->priv->focus_column);
10192
10193   gtk_tree_path_free (cursor_path);
10194
10195   return TRUE;
10196 }
10197
10198 static gboolean
10199 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10200 {
10201   GtkRBTree *new_tree = NULL;
10202   GtkRBNode *new_node = NULL;
10203   GtkRBTree *cursor_tree = NULL;
10204   GtkRBNode *cursor_node = NULL;
10205   GtkTreePath *cursor_path = NULL;
10206
10207   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10208     return FALSE;
10209
10210   cursor_path = NULL;
10211   if (tree_view->priv->cursor)
10212     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10213
10214   if (cursor_path == NULL)
10215     return FALSE;
10216
10217   _gtk_tree_view_find_node (tree_view, cursor_path,
10218                             &cursor_tree, &cursor_node);
10219   if (cursor_tree == NULL)
10220     {
10221       gtk_tree_path_free (cursor_path);
10222       return FALSE;
10223     }
10224
10225   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10226                                             cursor_node,
10227                                             cursor_tree,
10228                                             cursor_path,
10229                                             GTK_TREE_SELECT_MODE_TOGGLE,
10230                                             FALSE);
10231
10232   /* We bail out if the original (tree, node) don't exist anymore after
10233    * handling the selection-changed callback.  We do return TRUE because
10234    * the key press has been handled at this point.
10235    */
10236   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10237
10238   if (cursor_tree != new_tree || cursor_node != new_node)
10239     return FALSE;
10240
10241   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10242
10243   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10244   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10245   gtk_tree_path_free (cursor_path);
10246
10247   return TRUE;
10248 }
10249
10250 static gboolean
10251 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10252                                                gboolean     logical,
10253                                                gboolean     expand,
10254                                                gboolean     open_all)
10255 {
10256   GtkTreePath *cursor_path = NULL;
10257   GtkRBTree *tree;
10258   GtkRBNode *node;
10259
10260   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10261     return FALSE;
10262
10263   cursor_path = NULL;
10264   if (tree_view->priv->cursor)
10265     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10266
10267   if (cursor_path == NULL)
10268     return FALSE;
10269
10270   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10271     return FALSE;
10272
10273   /* Don't handle the event if we aren't an expander */
10274   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10275     return FALSE;
10276
10277   if (!logical
10278       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10279     expand = !expand;
10280
10281   if (expand)
10282     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10283   else
10284     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10285
10286   gtk_tree_path_free (cursor_path);
10287
10288   return TRUE;
10289 }
10290
10291 static gboolean
10292 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10293 {
10294   GtkRBTree *cursor_tree = NULL;
10295   GtkRBNode *cursor_node = NULL;
10296   GtkTreePath *cursor_path = NULL;
10297   GdkModifierType state;
10298
10299   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10300     goto out;
10301
10302   cursor_path = NULL;
10303   if (tree_view->priv->cursor)
10304     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10305
10306   if (cursor_path == NULL)
10307     goto out;
10308
10309   _gtk_tree_view_find_node (tree_view, cursor_path,
10310                             &cursor_tree, &cursor_node);
10311   if (cursor_tree == NULL)
10312     {
10313       gtk_tree_path_free (cursor_path);
10314       goto out;
10315     }
10316
10317   if (cursor_tree->parent_node)
10318     {
10319       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10320       cursor_node = cursor_tree->parent_node;
10321       cursor_tree = cursor_tree->parent_tree;
10322
10323       gtk_tree_path_up (cursor_path);
10324
10325       if (gtk_get_current_event_state (&state))
10326         {
10327           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10328             tree_view->priv->ctrl_pressed = TRUE;
10329         }
10330
10331       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10332       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10333
10334       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10335       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10336       gtk_tree_path_free (cursor_path);
10337
10338       tree_view->priv->ctrl_pressed = FALSE;
10339
10340       return TRUE;
10341     }
10342
10343  out:
10344
10345   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10346   return FALSE;
10347 }
10348
10349 static gboolean
10350 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10351 {
10352   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10353   tree_view->priv->typeselect_flush_timeout = 0;
10354
10355   return FALSE;
10356 }
10357
10358 /* Cut and paste from gtkwindow.c */
10359 static void
10360 send_focus_change (GtkWidget *widget,
10361                    GdkDevice *device,
10362                    gboolean   in)
10363 {
10364   GdkDeviceManager *device_manager;
10365   GList *devices, *d;
10366
10367   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10368   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10369   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10370   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10371
10372   for (d = devices; d; d = d->next)
10373     {
10374       GdkDevice *dev = d->data;
10375       GdkEvent *fevent;
10376       GdkWindow *window;
10377
10378       if (dev->source != GDK_SOURCE_KEYBOARD)
10379         continue;
10380
10381       window = gtk_widget_get_window (widget);
10382
10383       /* Skip non-master keyboards that haven't
10384        * selected for events from this window
10385        */
10386       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10387           !gdk_window_get_device_events (window, dev))
10388         continue;
10389
10390       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10391
10392       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10393       fevent->focus_change.window = g_object_ref (window);
10394       fevent->focus_change.in = in;
10395       gdk_event_set_device (fevent, device);
10396
10397       gtk_widget_send_focus_change (widget, fevent);
10398
10399       gdk_event_free (fevent);
10400     }
10401 }
10402
10403 static void
10404 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10405 {
10406   GtkWidget *frame, *vbox, *toplevel;
10407   GdkScreen *screen;
10408
10409   if (tree_view->priv->search_custom_entry_set)
10410     return;
10411
10412   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10413   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10414
10415    if (tree_view->priv->search_window != NULL)
10416      {
10417        if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10418          gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10419                                       GTK_WINDOW (tree_view->priv->search_window));
10420        else if (gtk_window_has_group (GTK_WINDOW (tree_view->priv->search_window)))
10421          gtk_window_group_remove_window (gtk_window_get_group (GTK_WINDOW (tree_view->priv->search_window)),
10422                                          GTK_WINDOW (tree_view->priv->search_window));
10423
10424        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10425
10426        return;
10427      }
10428
10429   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10430   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10431
10432   if (gtk_window_has_group (GTK_WINDOW (toplevel)))
10433     gtk_window_group_add_window (gtk_window_get_group (GTK_WINDOW (toplevel)),
10434                                  GTK_WINDOW (tree_view->priv->search_window));
10435
10436   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10437                             GDK_WINDOW_TYPE_HINT_UTILITY);
10438   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10439   g_signal_connect (tree_view->priv->search_window, "delete-event",
10440                     G_CALLBACK (gtk_tree_view_search_delete_event),
10441                     tree_view);
10442   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10443                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10444                     tree_view);
10445   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10446                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10447                     tree_view);
10448   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10449                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10450                     tree_view);
10451
10452   frame = gtk_frame_new (NULL);
10453   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10454   gtk_widget_show (frame);
10455   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10456
10457   vbox = gtk_vbox_new (FALSE, 0);
10458   gtk_widget_show (vbox);
10459   gtk_container_add (GTK_CONTAINER (frame), vbox);
10460   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10461
10462   /* add entry */
10463   tree_view->priv->search_entry = gtk_entry_new ();
10464   gtk_widget_show (tree_view->priv->search_entry);
10465   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10466                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10467                     tree_view);
10468   g_signal_connect (tree_view->priv->search_entry,
10469                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10470                     tree_view);
10471   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10472                     "preedit-changed",
10473                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10474                     tree_view);
10475   gtk_container_add (GTK_CONTAINER (vbox),
10476                      tree_view->priv->search_entry);
10477
10478   gtk_widget_realize (tree_view->priv->search_entry);
10479 }
10480
10481 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10482  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10483  */
10484 static gboolean
10485 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10486                                              GdkDevice   *device,
10487                                              gboolean     keybinding)
10488 {
10489   /* We only start interactive search if we have focus or the columns
10490    * have focus.  If one of our children have focus, we don't want to
10491    * start the search.
10492    */
10493   GList *list;
10494   gboolean found_focus = FALSE;
10495   GtkWidgetClass *entry_parent_class;
10496
10497   if (!tree_view->priv->enable_search && !keybinding)
10498     return FALSE;
10499
10500   if (tree_view->priv->search_custom_entry_set)
10501     return FALSE;
10502
10503   if (tree_view->priv->search_window != NULL &&
10504       gtk_widget_get_visible (tree_view->priv->search_window))
10505     return TRUE;
10506
10507   for (list = tree_view->priv->columns; list; list = list->next)
10508     {
10509       GtkTreeViewColumn *column;
10510
10511       column = list->data;
10512       if (! column->visible)
10513         continue;
10514
10515       if (gtk_widget_has_focus (column->button))
10516         {
10517           found_focus = TRUE;
10518           break;
10519         }
10520     }
10521
10522   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10523     found_focus = TRUE;
10524
10525   if (!found_focus)
10526     return FALSE;
10527
10528   if (tree_view->priv->search_column < 0)
10529     return FALSE;
10530
10531   gtk_tree_view_ensure_interactive_directory (tree_view);
10532
10533   if (keybinding)
10534     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10535
10536   /* done, show it */
10537   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10538   gtk_widget_show (tree_view->priv->search_window);
10539   if (tree_view->priv->search_entry_changed_id == 0)
10540     {
10541       tree_view->priv->search_entry_changed_id =
10542         g_signal_connect (tree_view->priv->search_entry, "changed",
10543                           G_CALLBACK (gtk_tree_view_search_init),
10544                           tree_view);
10545     }
10546
10547   tree_view->priv->typeselect_flush_timeout =
10548     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10549                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10550                    tree_view);
10551
10552   /* Grab focus will select all the text.  We don't want that to happen, so we
10553    * call the parent instance and bypass the selection change.  This is probably
10554    * really non-kosher. */
10555   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10556   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10557
10558   /* send focus-in event */
10559   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10560
10561   /* search first matching iter */
10562   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10563
10564   return TRUE;
10565 }
10566
10567 static gboolean
10568 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10569 {
10570   return gtk_tree_view_real_start_interactive_search (tree_view,
10571                                                       gtk_get_current_event_device (),
10572                                                       TRUE);
10573 }
10574
10575 /* this function returns the new width of the column being resized given
10576  * the column and x position of the cursor; the x cursor position is passed
10577  * in as a pointer and automagicly corrected if it's beyond min/max limits
10578  */
10579 static gint
10580 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10581                                 gint       i,
10582                                 gint      *x)
10583 {
10584   GtkAllocation allocation;
10585   GtkTreeViewColumn *column;
10586   GtkRequisition button_req;
10587   gint width;
10588   gboolean rtl;
10589
10590   /* first translate the x position from widget->window
10591    * to clist->clist_window
10592    */
10593   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10594   column = g_list_nth (tree_view->priv->columns, i)->data;
10595   gtk_widget_get_allocation (column->button, &allocation);
10596   width = rtl ? (allocation.x + allocation.width - *x) : (*x - allocation.x);
10597
10598   /* Clamp down the value */
10599   if (column->min_width == -1)
10600     {
10601       gtk_size_request_get_size (GTK_SIZE_REQUEST (column->button), &button_req, NULL);
10602       width = MAX (button_req.width, width);
10603     }
10604   else
10605     width = MAX (column->min_width,
10606                  width);
10607   if (column->max_width != -1)
10608     width = MIN (width, column->max_width);
10609
10610   *x = rtl ? (allocation.x + allocation.width - width) : (allocation.x + width);
10611
10612   return width;
10613 }
10614
10615
10616 /* FIXME this adjust_allocation is a big cut-and-paste from
10617  * GtkCList, needs to be some "official" way to do this
10618  * factored out.
10619  */
10620 typedef struct
10621 {
10622   GdkWindow *window;
10623   int dx;
10624   int dy;
10625 } ScrollData;
10626
10627 /* The window to which widget->window is relative */
10628 #define ALLOCATION_WINDOW(widget)               \
10629    (!gtk_widget_get_has_window (widget) ?                   \
10630     gtk_widget_get_window (widget) :                        \
10631     gdk_window_get_parent (gtk_widget_get_window (widget)))
10632
10633 static void
10634 adjust_allocation_recurse (GtkWidget *widget,
10635                            gpointer   data)
10636 {
10637   GtkAllocation allocation;
10638   ScrollData *scroll_data = data;
10639
10640   /* Need to really size allocate instead of just poking
10641    * into widget->allocation if the widget is not realized.
10642    * FIXME someone figure out why this was.
10643    */
10644   gtk_widget_get_allocation (widget, &allocation);
10645   if (!gtk_widget_get_realized (widget))
10646     {
10647       if (gtk_widget_get_visible (widget))
10648         {
10649           GdkRectangle tmp_rectangle = allocation;
10650           tmp_rectangle.x += scroll_data->dx;
10651           tmp_rectangle.y += scroll_data->dy;
10652
10653           gtk_widget_size_allocate (widget, &tmp_rectangle);
10654         }
10655     }
10656   else
10657     {
10658       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10659         {
10660           allocation.x += scroll_data->dx;
10661           allocation.y += scroll_data->dy;
10662           gtk_widget_set_allocation (widget, &allocation);
10663
10664           if (GTK_IS_CONTAINER (widget))
10665             gtk_container_forall (GTK_CONTAINER (widget),
10666                                   adjust_allocation_recurse,
10667                                   data);
10668         }
10669     }
10670 }
10671
10672 static void
10673 adjust_allocation (GtkWidget *widget,
10674                    int        dx,
10675                    int        dy)
10676 {
10677   ScrollData scroll_data;
10678
10679   if (gtk_widget_get_realized (widget))
10680     scroll_data.window = ALLOCATION_WINDOW (widget);
10681   else
10682     scroll_data.window = NULL;
10683
10684   scroll_data.dx = dx;
10685   scroll_data.dy = dy;
10686
10687   adjust_allocation_recurse (widget, &scroll_data);
10688 }
10689
10690 /* Callbacks */
10691 static void
10692 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10693                                   GtkTreeView   *tree_view)
10694 {
10695   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10696     {
10697       gint dy;
10698
10699       gdk_window_move (tree_view->priv->bin_window,
10700                        - tree_view->priv->hadjustment->value,
10701                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10702       gdk_window_move (tree_view->priv->header_window,
10703                        - tree_view->priv->hadjustment->value,
10704                        0);
10705       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10706       if (dy)
10707         {
10708           update_prelight (tree_view,
10709                            tree_view->priv->event_last_x,
10710                            tree_view->priv->event_last_y - dy);
10711
10712           if (tree_view->priv->edited_column &&
10713               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10714             {
10715               GList *list;
10716               GtkWidget *widget;
10717               GtkTreeViewChild *child = NULL;
10718
10719               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10720               adjust_allocation (widget, 0, dy);
10721
10722               for (list = tree_view->priv->children; list; list = list->next)
10723                 {
10724                   child = (GtkTreeViewChild *)list->data;
10725                   if (child->widget == widget)
10726                     {
10727                       child->y += dy;
10728                       break;
10729                     }
10730                 }
10731             }
10732         }
10733       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10734
10735       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10736         {
10737           /* update our dy and top_row */
10738           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10739
10740           if (!tree_view->priv->in_top_row_to_dy)
10741             gtk_tree_view_dy_to_top_row (tree_view);
10742         }
10743
10744       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10745       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10746     }
10747 }
10748
10749 \f
10750
10751 /* Public methods
10752  */
10753
10754 /**
10755  * gtk_tree_view_new:
10756  *
10757  * Creates a new #GtkTreeView widget.
10758  *
10759  * Return value: A newly created #GtkTreeView widget.
10760  **/
10761 GtkWidget *
10762 gtk_tree_view_new (void)
10763 {
10764   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10765 }
10766
10767 /**
10768  * gtk_tree_view_new_with_model:
10769  * @model: the model.
10770  *
10771  * Creates a new #GtkTreeView widget with the model initialized to @model.
10772  *
10773  * Return value: A newly created #GtkTreeView widget.
10774  **/
10775 GtkWidget *
10776 gtk_tree_view_new_with_model (GtkTreeModel *model)
10777 {
10778   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10779 }
10780
10781 /* Public Accessors
10782  */
10783
10784 /**
10785  * gtk_tree_view_get_model:
10786  * @tree_view: a #GtkTreeView
10787  *
10788  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10789  * model is unset.
10790  *
10791  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10792  **/
10793 GtkTreeModel *
10794 gtk_tree_view_get_model (GtkTreeView *tree_view)
10795 {
10796   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10797
10798   return tree_view->priv->model;
10799 }
10800
10801 /**
10802  * gtk_tree_view_set_model:
10803  * @tree_view: A #GtkTreeNode.
10804  * @model: (allow-none): The model.
10805  *
10806  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10807  * set, it will remove it before setting the new model.  If @model is %NULL,
10808  * then it will unset the old model.
10809  **/
10810 void
10811 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10812                          GtkTreeModel *model)
10813 {
10814   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10815   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10816
10817   if (model == tree_view->priv->model)
10818     return;
10819
10820   if (tree_view->priv->scroll_to_path)
10821     {
10822       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10823       tree_view->priv->scroll_to_path = NULL;
10824     }
10825
10826   if (tree_view->priv->model)
10827     {
10828       GList *tmplist = tree_view->priv->columns;
10829
10830       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10831       gtk_tree_view_stop_editing (tree_view, TRUE);
10832
10833       remove_expand_collapse_timeout (tree_view);
10834
10835       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10836                                             gtk_tree_view_row_changed,
10837                                             tree_view);
10838       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10839                                             gtk_tree_view_row_inserted,
10840                                             tree_view);
10841       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10842                                             gtk_tree_view_row_has_child_toggled,
10843                                             tree_view);
10844       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10845                                             gtk_tree_view_row_deleted,
10846                                             tree_view);
10847       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10848                                             gtk_tree_view_rows_reordered,
10849                                             tree_view);
10850
10851       for (; tmplist; tmplist = tmplist->next)
10852         _gtk_tree_view_column_unset_model (tmplist->data,
10853                                            tree_view->priv->model);
10854
10855       if (tree_view->priv->tree)
10856         gtk_tree_view_free_rbtree (tree_view);
10857
10858       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10859       tree_view->priv->drag_dest_row = NULL;
10860       gtk_tree_row_reference_free (tree_view->priv->cursor);
10861       tree_view->priv->cursor = NULL;
10862       gtk_tree_row_reference_free (tree_view->priv->anchor);
10863       tree_view->priv->anchor = NULL;
10864       gtk_tree_row_reference_free (tree_view->priv->top_row);
10865       tree_view->priv->top_row = NULL;
10866       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10867       tree_view->priv->scroll_to_path = NULL;
10868
10869       tree_view->priv->scroll_to_column = NULL;
10870
10871       g_object_unref (tree_view->priv->model);
10872
10873       tree_view->priv->search_column = -1;
10874       tree_view->priv->fixed_height_check = 0;
10875       tree_view->priv->fixed_height = -1;
10876       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10877       tree_view->priv->last_button_x = -1;
10878       tree_view->priv->last_button_y = -1;
10879     }
10880
10881   tree_view->priv->model = model;
10882
10883   if (tree_view->priv->model)
10884     {
10885       gint i;
10886       GtkTreePath *path;
10887       GtkTreeIter iter;
10888       GtkTreeModelFlags flags;
10889
10890       if (tree_view->priv->search_column == -1)
10891         {
10892           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10893             {
10894               GType type = gtk_tree_model_get_column_type (model, i);
10895
10896               if (g_value_type_transformable (type, G_TYPE_STRING))
10897                 {
10898                   tree_view->priv->search_column = i;
10899                   break;
10900                 }
10901             }
10902         }
10903
10904       g_object_ref (tree_view->priv->model);
10905       g_signal_connect (tree_view->priv->model,
10906                         "row-changed",
10907                         G_CALLBACK (gtk_tree_view_row_changed),
10908                         tree_view);
10909       g_signal_connect (tree_view->priv->model,
10910                         "row-inserted",
10911                         G_CALLBACK (gtk_tree_view_row_inserted),
10912                         tree_view);
10913       g_signal_connect (tree_view->priv->model,
10914                         "row-has-child-toggled",
10915                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10916                         tree_view);
10917       g_signal_connect (tree_view->priv->model,
10918                         "row-deleted",
10919                         G_CALLBACK (gtk_tree_view_row_deleted),
10920                         tree_view);
10921       g_signal_connect (tree_view->priv->model,
10922                         "rows-reordered",
10923                         G_CALLBACK (gtk_tree_view_rows_reordered),
10924                         tree_view);
10925
10926       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10927       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10928         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10929       else
10930         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10931
10932       path = gtk_tree_path_new_first ();
10933       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10934         {
10935           tree_view->priv->tree = _gtk_rbtree_new ();
10936           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10937         }
10938       gtk_tree_path_free (path);
10939
10940       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10941       install_presize_handler (tree_view);
10942     }
10943
10944   g_object_notify (G_OBJECT (tree_view), "model");
10945
10946   if (tree_view->priv->selection)
10947   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10948
10949   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10950     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10951 }
10952
10953 /**
10954  * gtk_tree_view_get_selection:
10955  * @tree_view: A #GtkTreeView.
10956  *
10957  * Gets the #GtkTreeSelection associated with @tree_view.
10958  *
10959  * Return value: (transfer none): A #GtkTreeSelection object.
10960  **/
10961 GtkTreeSelection *
10962 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10963 {
10964   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10965
10966   return tree_view->priv->selection;
10967 }
10968
10969 /**
10970  * gtk_tree_view_get_hadjustment:
10971  * @tree_view: A #GtkTreeView
10972  *
10973  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10974  *
10975  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
10976  *     if none is currently being used.
10977  **/
10978 GtkAdjustment *
10979 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10980 {
10981   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10982
10983   if (tree_view->priv->hadjustment == NULL)
10984     gtk_tree_view_set_hadjustment (tree_view, NULL);
10985
10986   return tree_view->priv->hadjustment;
10987 }
10988
10989 /**
10990  * gtk_tree_view_set_hadjustment:
10991  * @tree_view: A #GtkTreeView
10992  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10993  *
10994  * Sets the #GtkAdjustment for the current horizontal aspect.
10995  **/
10996 void
10997 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10998                                GtkAdjustment *adjustment)
10999 {
11000   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11001
11002   gtk_tree_view_set_adjustments (tree_view,
11003                                  adjustment,
11004                                  tree_view->priv->vadjustment);
11005
11006   g_object_notify (G_OBJECT (tree_view), "hadjustment");
11007 }
11008
11009 /**
11010  * gtk_tree_view_get_vadjustment:
11011  * @tree_view: A #GtkTreeView
11012  *
11013  * Gets the #GtkAdjustment currently being used for the vertical aspect.
11014  *
11015  * Return value: (transfer none): A #GtkAdjustment object, or %NULL
11016  *     if none is currently being used.
11017  **/
11018 GtkAdjustment *
11019 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
11020 {
11021   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11022
11023   if (tree_view->priv->vadjustment == NULL)
11024     gtk_tree_view_set_vadjustment (tree_view, NULL);
11025
11026   return tree_view->priv->vadjustment;
11027 }
11028
11029 /**
11030  * gtk_tree_view_set_vadjustment:
11031  * @tree_view: A #GtkTreeView
11032  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
11033  *
11034  * Sets the #GtkAdjustment for the current vertical aspect.
11035  **/
11036 void
11037 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
11038                                GtkAdjustment *adjustment)
11039 {
11040   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11041
11042   gtk_tree_view_set_adjustments (tree_view,
11043                                  tree_view->priv->hadjustment,
11044                                  adjustment);
11045
11046   g_object_notify (G_OBJECT (tree_view), "vadjustment");
11047 }
11048
11049 /* Column and header operations */
11050
11051 /**
11052  * gtk_tree_view_get_headers_visible:
11053  * @tree_view: A #GtkTreeView.
11054  *
11055  * Returns %TRUE if the headers on the @tree_view are visible.
11056  *
11057  * Return value: Whether the headers are visible or not.
11058  **/
11059 gboolean
11060 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
11061 {
11062   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11063
11064   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11065 }
11066
11067 /**
11068  * gtk_tree_view_set_headers_visible:
11069  * @tree_view: A #GtkTreeView.
11070  * @headers_visible: %TRUE if the headers are visible
11071  *
11072  * Sets the visibility state of the headers.
11073  **/
11074 void
11075 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
11076                                    gboolean     headers_visible)
11077 {
11078   gint x, y;
11079   GList *list;
11080   GtkTreeViewColumn *column;
11081   GtkAllocation allocation;
11082
11083   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11084
11085   headers_visible = !! headers_visible;
11086
11087   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
11088     return;
11089
11090   if (headers_visible)
11091     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11092   else
11093     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11094
11095   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11096     {
11097       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11098       if (headers_visible)
11099         {
11100           gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11101           gdk_window_move_resize (tree_view->priv->bin_window,
11102                                   x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view),
11103                                   tree_view->priv->width, allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11104
11105           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11106             gtk_tree_view_map_buttons (tree_view);
11107         }
11108       else
11109         {
11110           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11111
11112           for (list = tree_view->priv->columns; list; list = list->next)
11113             {
11114               column = list->data;
11115               gtk_widget_unmap (column->button);
11116             }
11117           gdk_window_hide (tree_view->priv->header_window);
11118         }
11119     }
11120
11121   gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
11122   tree_view->priv->vadjustment->page_size = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11123   tree_view->priv->vadjustment->page_increment = (allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11124   tree_view->priv->vadjustment->lower = 0;
11125   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11126   gtk_adjustment_changed (tree_view->priv->vadjustment);
11127
11128   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11129
11130   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11131 }
11132
11133 /**
11134  * gtk_tree_view_columns_autosize:
11135  * @tree_view: A #GtkTreeView.
11136  *
11137  * Resizes all columns to their optimal width. Only works after the
11138  * treeview has been realized.
11139  **/
11140 void
11141 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11142 {
11143   gboolean dirty = FALSE;
11144   GList *list;
11145   GtkTreeViewColumn *column;
11146
11147   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11148
11149   for (list = tree_view->priv->columns; list; list = list->next)
11150     {
11151       column = list->data;
11152       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11153         continue;
11154       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11155       dirty = TRUE;
11156     }
11157
11158   if (dirty)
11159     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11160 }
11161
11162 /**
11163  * gtk_tree_view_set_headers_clickable:
11164  * @tree_view: A #GtkTreeView.
11165  * @setting: %TRUE if the columns are clickable.
11166  *
11167  * Allow the column title buttons to be clicked.
11168  **/
11169 void
11170 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11171                                      gboolean   setting)
11172 {
11173   GList *list;
11174
11175   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11176
11177   for (list = tree_view->priv->columns; list; list = list->next)
11178     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11179
11180   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11181 }
11182
11183
11184 /**
11185  * gtk_tree_view_get_headers_clickable:
11186  * @tree_view: A #GtkTreeView.
11187  *
11188  * Returns whether all header columns are clickable.
11189  *
11190  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11191  *
11192  * Since: 2.10
11193  **/
11194 gboolean
11195 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11196 {
11197   GList *list;
11198
11199   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11200
11201   for (list = tree_view->priv->columns; list; list = list->next)
11202     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11203       return FALSE;
11204
11205   return TRUE;
11206 }
11207
11208 /**
11209  * gtk_tree_view_set_rules_hint
11210  * @tree_view: a #GtkTreeView
11211  * @setting: %TRUE if the tree requires reading across rows
11212  *
11213  * This function tells GTK+ that the user interface for your
11214  * application requires users to read across tree rows and associate
11215  * cells with one another. By default, GTK+ will then render the tree
11216  * with alternating row colors. Do <emphasis>not</emphasis> use it
11217  * just because you prefer the appearance of the ruled tree; that's a
11218  * question for the theme. Some themes will draw tree rows in
11219  * alternating colors even when rules are turned off, and users who
11220  * prefer that appearance all the time can choose those themes. You
11221  * should call this function only as a <emphasis>semantic</emphasis>
11222  * hint to the theme engine that your tree makes alternating colors
11223  * useful from a functional standpoint (since it has lots of columns,
11224  * generally).
11225  *
11226  **/
11227 void
11228 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11229                               gboolean      setting)
11230 {
11231   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11232
11233   setting = setting != FALSE;
11234
11235   if (tree_view->priv->has_rules != setting)
11236     {
11237       tree_view->priv->has_rules = setting;
11238       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11239     }
11240
11241   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11242 }
11243
11244 /**
11245  * gtk_tree_view_get_rules_hint
11246  * @tree_view: a #GtkTreeView
11247  *
11248  * Gets the setting set by gtk_tree_view_set_rules_hint().
11249  *
11250  * Return value: %TRUE if rules are useful for the user of this tree
11251  **/
11252 gboolean
11253 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11254 {
11255   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11256
11257   return tree_view->priv->has_rules;
11258 }
11259
11260 /* Public Column functions
11261  */
11262
11263 /**
11264  * gtk_tree_view_append_column:
11265  * @tree_view: A #GtkTreeView.
11266  * @column: The #GtkTreeViewColumn to add.
11267  *
11268  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11269  * mode enabled, then @column must have its "sizing" property set to be
11270  * GTK_TREE_VIEW_COLUMN_FIXED.
11271  *
11272  * Return value: The number of columns in @tree_view after appending.
11273  **/
11274 gint
11275 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11276                              GtkTreeViewColumn *column)
11277 {
11278   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11279   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11280   g_return_val_if_fail (column->tree_view == NULL, -1);
11281
11282   return gtk_tree_view_insert_column (tree_view, column, -1);
11283 }
11284
11285
11286 /**
11287  * gtk_tree_view_remove_column:
11288  * @tree_view: A #GtkTreeView.
11289  * @column: The #GtkTreeViewColumn to remove.
11290  *
11291  * Removes @column from @tree_view.
11292  *
11293  * Return value: The number of columns in @tree_view after removing.
11294  **/
11295 gint
11296 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11297                              GtkTreeViewColumn *column)
11298 {
11299   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11300   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11301   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11302
11303   if (tree_view->priv->focus_column == column)
11304     tree_view->priv->focus_column = NULL;
11305
11306   if (tree_view->priv->edited_column == column)
11307     {
11308       gtk_tree_view_stop_editing (tree_view, TRUE);
11309
11310       /* no need to, but just to be sure ... */
11311       tree_view->priv->edited_column = NULL;
11312     }
11313
11314   if (tree_view->priv->expander_column == column)
11315     tree_view->priv->expander_column = NULL;
11316
11317   g_signal_handlers_disconnect_by_func (column,
11318                                         G_CALLBACK (column_sizing_notify),
11319                                         tree_view);
11320
11321   _gtk_tree_view_column_unset_tree_view (column);
11322
11323   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11324   tree_view->priv->n_columns--;
11325
11326   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11327     {
11328       GList *list;
11329
11330       _gtk_tree_view_column_unrealize_button (column);
11331       for (list = tree_view->priv->columns; list; list = list->next)
11332         {
11333           GtkTreeViewColumn *tmp_column;
11334
11335           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11336           if (tmp_column->visible)
11337             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11338         }
11339
11340       if (tree_view->priv->n_columns == 0 &&
11341           gtk_tree_view_get_headers_visible (tree_view))
11342         gdk_window_hide (tree_view->priv->header_window);
11343
11344       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11345     }
11346
11347   g_object_unref (column);
11348   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11349
11350   return tree_view->priv->n_columns;
11351 }
11352
11353 /**
11354  * gtk_tree_view_insert_column:
11355  * @tree_view: A #GtkTreeView.
11356  * @column: The #GtkTreeViewColumn to be inserted.
11357  * @position: The position to insert @column in.
11358  *
11359  * This inserts the @column into the @tree_view at @position.  If @position is
11360  * -1, then the column is inserted at the end. If @tree_view has
11361  * "fixed_height" mode enabled, then @column must have its "sizing" property
11362  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11363  *
11364  * Return value: The number of columns in @tree_view after insertion.
11365  **/
11366 gint
11367 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11368                              GtkTreeViewColumn *column,
11369                              gint               position)
11370 {
11371   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11372   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11373   g_return_val_if_fail (column->tree_view == NULL, -1);
11374
11375   if (tree_view->priv->fixed_height_mode)
11376     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11377                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11378
11379   g_object_ref_sink (column);
11380
11381   if (tree_view->priv->n_columns == 0 &&
11382       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11383       gtk_tree_view_get_headers_visible (tree_view))
11384     {
11385       gdk_window_show (tree_view->priv->header_window);
11386     }
11387
11388   g_signal_connect (column, "notify::sizing",
11389                     G_CALLBACK (column_sizing_notify), tree_view);
11390
11391   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11392                                             column, position);
11393   tree_view->priv->n_columns++;
11394
11395   _gtk_tree_view_column_set_tree_view (column, tree_view);
11396
11397   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11398     {
11399       GList *list;
11400
11401       _gtk_tree_view_column_realize_button (column);
11402
11403       for (list = tree_view->priv->columns; list; list = list->next)
11404         {
11405           column = GTK_TREE_VIEW_COLUMN (list->data);
11406           if (column->visible)
11407             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11408         }
11409       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11410     }
11411
11412   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11413
11414   return tree_view->priv->n_columns;
11415 }
11416
11417 /**
11418  * gtk_tree_view_insert_column_with_attributes:
11419  * @tree_view: A #GtkTreeView
11420  * @position: The position to insert the new column in.
11421  * @title: The title to set the header to.
11422  * @cell: The #GtkCellRenderer.
11423  * @Varargs: A %NULL-terminated list of attributes.
11424  *
11425  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11426  * @position.  If @position is -1, then the newly created column is inserted at
11427  * the end.  The column is initialized with the attributes given. If @tree_view
11428  * has "fixed_height" mode enabled, then the new column will have its sizing
11429  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11430  *
11431  * Return value: The number of columns in @tree_view after insertion.
11432  **/
11433 gint
11434 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11435                                              gint             position,
11436                                              const gchar     *title,
11437                                              GtkCellRenderer *cell,
11438                                              ...)
11439 {
11440   GtkTreeViewColumn *column;
11441   gchar *attribute;
11442   va_list args;
11443   gint column_id;
11444
11445   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11446
11447   column = gtk_tree_view_column_new ();
11448   if (tree_view->priv->fixed_height_mode)
11449     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11450
11451   gtk_tree_view_column_set_title (column, title);
11452   gtk_tree_view_column_pack_start (column, cell, TRUE);
11453
11454   va_start (args, cell);
11455
11456   attribute = va_arg (args, gchar *);
11457
11458   while (attribute != NULL)
11459     {
11460       column_id = va_arg (args, gint);
11461       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11462       attribute = va_arg (args, gchar *);
11463     }
11464
11465   va_end (args);
11466
11467   gtk_tree_view_insert_column (tree_view, column, position);
11468
11469   return tree_view->priv->n_columns;
11470 }
11471
11472 /**
11473  * gtk_tree_view_insert_column_with_data_func:
11474  * @tree_view: a #GtkTreeView
11475  * @position: Position to insert, -1 for append
11476  * @title: column title
11477  * @cell: cell renderer for column
11478  * @func: function to set attributes of cell renderer
11479  * @data: data for @func
11480  * @dnotify: destroy notifier for @data
11481  *
11482  * Convenience function that inserts a new column into the #GtkTreeView
11483  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11484  * attributes (normally using data from the model). See also
11485  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11486  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11487  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11488  *
11489  * Return value: number of columns in the tree view post-insert
11490  **/
11491 gint
11492 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11493                                              gint                       position,
11494                                              const gchar               *title,
11495                                              GtkCellRenderer           *cell,
11496                                              GtkTreeCellDataFunc        func,
11497                                              gpointer                   data,
11498                                              GDestroyNotify             dnotify)
11499 {
11500   GtkTreeViewColumn *column;
11501
11502   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11503
11504   column = gtk_tree_view_column_new ();
11505   if (tree_view->priv->fixed_height_mode)
11506     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11507
11508   gtk_tree_view_column_set_title (column, title);
11509   gtk_tree_view_column_pack_start (column, cell, TRUE);
11510   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11511
11512   gtk_tree_view_insert_column (tree_view, column, position);
11513
11514   return tree_view->priv->n_columns;
11515 }
11516
11517 /**
11518  * gtk_tree_view_get_column:
11519  * @tree_view: A #GtkTreeView.
11520  * @n: The position of the column, counting from 0.
11521  *
11522  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11523  *
11524  * Return value: (transfer none): The #GtkTreeViewColumn, or %NULL if the
11525  *     position is outside the range of columns.
11526  **/
11527 GtkTreeViewColumn *
11528 gtk_tree_view_get_column (GtkTreeView *tree_view,
11529                           gint         n)
11530 {
11531   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11532
11533   if (n < 0 || n >= tree_view->priv->n_columns)
11534     return NULL;
11535
11536   if (tree_view->priv->columns == NULL)
11537     return NULL;
11538
11539   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11540 }
11541
11542 /**
11543  * gtk_tree_view_get_columns:
11544  * @tree_view: A #GtkTreeView
11545  *
11546  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11547  * The returned list must be freed with g_list_free ().
11548  *
11549  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11550  **/
11551 GList *
11552 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11553 {
11554   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11555
11556   return g_list_copy (tree_view->priv->columns);
11557 }
11558
11559 /**
11560  * gtk_tree_view_move_column_after:
11561  * @tree_view: A #GtkTreeView
11562  * @column: The #GtkTreeViewColumn to be moved.
11563  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11564  *
11565  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11566  * @column is placed in the first position.
11567  **/
11568 void
11569 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11570                                  GtkTreeViewColumn *column,
11571                                  GtkTreeViewColumn *base_column)
11572 {
11573   GList *column_list_el, *base_el = NULL;
11574
11575   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11576
11577   column_list_el = g_list_find (tree_view->priv->columns, column);
11578   g_return_if_fail (column_list_el != NULL);
11579
11580   if (base_column)
11581     {
11582       base_el = g_list_find (tree_view->priv->columns, base_column);
11583       g_return_if_fail (base_el != NULL);
11584     }
11585
11586   if (column_list_el->prev == base_el)
11587     return;
11588
11589   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11590   if (base_el == NULL)
11591     {
11592       column_list_el->prev = NULL;
11593       column_list_el->next = tree_view->priv->columns;
11594       if (column_list_el->next)
11595         column_list_el->next->prev = column_list_el;
11596       tree_view->priv->columns = column_list_el;
11597     }
11598   else
11599     {
11600       column_list_el->prev = base_el;
11601       column_list_el->next = base_el->next;
11602       if (column_list_el->next)
11603         column_list_el->next->prev = column_list_el;
11604       base_el->next = column_list_el;
11605     }
11606
11607   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11608     {
11609       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11610       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11611     }
11612
11613   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11614 }
11615
11616 /**
11617  * gtk_tree_view_set_expander_column:
11618  * @tree_view: A #GtkTreeView
11619  * @column: %NULL, or the column to draw the expander arrow at.
11620  *
11621  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11622  * If @column is %NULL, then the expander arrow is always at the first
11623  * visible column.
11624  *
11625  * If you do not want expander arrow to appear in your tree, set the
11626  * expander column to a hidden column.
11627  **/
11628 void
11629 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11630                                    GtkTreeViewColumn *column)
11631 {
11632   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11633   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11634
11635   if (tree_view->priv->expander_column != column)
11636     {
11637       GList *list;
11638
11639       if (column)
11640         {
11641           /* Confirm that column is in tree_view */
11642           for (list = tree_view->priv->columns; list; list = list->next)
11643             if (list->data == column)
11644               break;
11645           g_return_if_fail (list != NULL);
11646         }
11647
11648       tree_view->priv->expander_column = column;
11649       g_object_notify (G_OBJECT (tree_view), "expander-column");
11650     }
11651 }
11652
11653 /**
11654  * gtk_tree_view_get_expander_column:
11655  * @tree_view: A #GtkTreeView
11656  *
11657  * Returns the column that is the current expander column.
11658  * This column has the expander arrow drawn next to it.
11659  *
11660  * Return value: (transfer none): The expander column.
11661  **/
11662 GtkTreeViewColumn *
11663 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11664 {
11665   GList *list;
11666
11667   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11668
11669   for (list = tree_view->priv->columns; list; list = list->next)
11670     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11671       return (GtkTreeViewColumn *) list->data;
11672   return NULL;
11673 }
11674
11675
11676 /**
11677  * gtk_tree_view_set_column_drag_function:
11678  * @tree_view: A #GtkTreeView.
11679  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11680  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11681  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11682  *
11683  * Sets a user function for determining where a column may be dropped when
11684  * dragged.  This function is called on every column pair in turn at the
11685  * beginning of a column drag to determine where a drop can take place.  The
11686  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11687  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11688  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11689  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11690  * @tree_view reverts to the default behavior of allowing all columns to be
11691  * dropped everywhere.
11692  **/
11693 void
11694 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11695                                         GtkTreeViewColumnDropFunc  func,
11696                                         gpointer                   user_data,
11697                                         GDestroyNotify             destroy)
11698 {
11699   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11700
11701   if (tree_view->priv->column_drop_func_data_destroy)
11702     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11703
11704   tree_view->priv->column_drop_func = func;
11705   tree_view->priv->column_drop_func_data = user_data;
11706   tree_view->priv->column_drop_func_data_destroy = destroy;
11707 }
11708
11709 /**
11710  * gtk_tree_view_scroll_to_point:
11711  * @tree_view: a #GtkTreeView
11712  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11713  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11714  *
11715  * Scrolls the tree view such that the top-left corner of the visible
11716  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11717  * in tree coordinates.  The @tree_view must be realized before
11718  * this function is called.  If it isn't, you probably want to be
11719  * using gtk_tree_view_scroll_to_cell().
11720  *
11721  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11722  **/
11723 void
11724 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11725                                gint         tree_x,
11726                                gint         tree_y)
11727 {
11728   GtkAdjustment *hadj;
11729   GtkAdjustment *vadj;
11730
11731   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11732   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11733
11734   hadj = tree_view->priv->hadjustment;
11735   vadj = tree_view->priv->vadjustment;
11736
11737   if (tree_x != -1)
11738     gtk_adjustment_set_value (hadj, tree_x);
11739   if (tree_y != -1)
11740     gtk_adjustment_set_value (vadj, tree_y);
11741 }
11742
11743 /**
11744  * gtk_tree_view_scroll_to_cell:
11745  * @tree_view: A #GtkTreeView.
11746  * @path: (allow-none): The path of the row to move to, or %NULL.
11747  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11748  * @use_align: whether to use alignment arguments, or %FALSE.
11749  * @row_align: The vertical alignment of the row specified by @path.
11750  * @col_align: The horizontal alignment of the column specified by @column.
11751  *
11752  * Moves the alignments of @tree_view to the position specified by @column and
11753  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11754  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11755  * or @path need to be non-%NULL.  @row_align determines where the row is
11756  * placed, and @col_align determines where @column is placed.  Both are expected
11757  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11758  * right/bottom alignment, 0.5 means center.
11759  *
11760  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11761  * tree does the minimum amount of work to scroll the cell onto the screen.
11762  * This means that the cell will be scrolled to the edge closest to its current
11763  * position.  If the cell is currently visible on the screen, nothing is done.
11764  *
11765  * This function only works if the model is set, and @path is a valid row on the
11766  * model.  If the model changes before the @tree_view is realized, the centered
11767  * path will be modified to reflect this change.
11768  **/
11769 void
11770 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11771                               GtkTreePath       *path,
11772                               GtkTreeViewColumn *column,
11773                               gboolean           use_align,
11774                               gfloat             row_align,
11775                               gfloat             col_align)
11776 {
11777   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11778   g_return_if_fail (tree_view->priv->model != NULL);
11779   g_return_if_fail (tree_view->priv->tree != NULL);
11780   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11781   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11782   g_return_if_fail (path != NULL || column != NULL);
11783
11784 #if 0
11785   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11786            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11787 #endif
11788   row_align = CLAMP (row_align, 0.0, 1.0);
11789   col_align = CLAMP (col_align, 0.0, 1.0);
11790
11791
11792   /* Note: Despite the benefits that come from having one code path for the
11793    * scrolling code, we short-circuit validate_visible_area's immplementation as
11794    * it is much slower than just going to the point.
11795    */
11796   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11797       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11798       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11799       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11800     {
11801       if (tree_view->priv->scroll_to_path)
11802         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11803
11804       tree_view->priv->scroll_to_path = NULL;
11805       tree_view->priv->scroll_to_column = NULL;
11806
11807       if (path)
11808         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11809       if (column)
11810         tree_view->priv->scroll_to_column = column;
11811       tree_view->priv->scroll_to_use_align = use_align;
11812       tree_view->priv->scroll_to_row_align = row_align;
11813       tree_view->priv->scroll_to_col_align = col_align;
11814
11815       install_presize_handler (tree_view);
11816     }
11817   else
11818     {
11819       GdkRectangle cell_rect;
11820       GdkRectangle vis_rect;
11821       gint dest_x, dest_y;
11822
11823       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11824       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11825
11826       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11827
11828       dest_x = vis_rect.x;
11829       dest_y = vis_rect.y;
11830
11831       if (column)
11832         {
11833           if (use_align)
11834             {
11835               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11836             }
11837           else
11838             {
11839               if (cell_rect.x < vis_rect.x)
11840                 dest_x = cell_rect.x;
11841               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11842                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11843             }
11844         }
11845
11846       if (path)
11847         {
11848           if (use_align)
11849             {
11850               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11851               dest_y = MAX (dest_y, 0);
11852             }
11853           else
11854             {
11855               if (cell_rect.y < vis_rect.y)
11856                 dest_y = cell_rect.y;
11857               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11858                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11859             }
11860         }
11861
11862       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11863     }
11864 }
11865
11866 /**
11867  * gtk_tree_view_row_activated:
11868  * @tree_view: A #GtkTreeView
11869  * @path: The #GtkTreePath to be activated.
11870  * @column: The #GtkTreeViewColumn to be activated.
11871  *
11872  * Activates the cell determined by @path and @column.
11873  **/
11874 void
11875 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11876                              GtkTreePath       *path,
11877                              GtkTreeViewColumn *column)
11878 {
11879   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11880
11881   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11882 }
11883
11884
11885 static void
11886 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11887                                           GtkRBNode *node,
11888                                           gpointer   data)
11889 {
11890   GtkTreeView *tree_view = data;
11891
11892   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11893       node->children)
11894     {
11895       GtkTreePath *path;
11896       GtkTreeIter iter;
11897
11898       path = _gtk_tree_view_find_path (tree_view, tree, node);
11899       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11900
11901       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11902
11903       gtk_tree_path_free (path);
11904     }
11905
11906   if (node->children)
11907     _gtk_rbtree_traverse (node->children,
11908                           node->children->root,
11909                           G_PRE_ORDER,
11910                           gtk_tree_view_expand_all_emission_helper,
11911                           tree_view);
11912 }
11913
11914 /**
11915  * gtk_tree_view_expand_all:
11916  * @tree_view: A #GtkTreeView.
11917  *
11918  * Recursively expands all nodes in the @tree_view.
11919  **/
11920 void
11921 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11922 {
11923   GtkTreePath *path;
11924   GtkRBTree *tree;
11925   GtkRBNode *node;
11926
11927   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11928
11929   if (tree_view->priv->tree == NULL)
11930     return;
11931
11932   path = gtk_tree_path_new_first ();
11933   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11934
11935   while (node)
11936     {
11937       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11938       node = _gtk_rbtree_next (tree, node);
11939       gtk_tree_path_next (path);
11940   }
11941
11942   gtk_tree_path_free (path);
11943 }
11944
11945 /* Timeout to animate the expander during expands and collapses */
11946 static gboolean
11947 expand_collapse_timeout (gpointer data)
11948 {
11949   return do_expand_collapse (data);
11950 }
11951
11952 static void
11953 add_expand_collapse_timeout (GtkTreeView *tree_view,
11954                              GtkRBTree   *tree,
11955                              GtkRBNode   *node,
11956                              gboolean     expand)
11957 {
11958   if (tree_view->priv->expand_collapse_timeout != 0)
11959     return;
11960
11961   tree_view->priv->expand_collapse_timeout =
11962       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11963   tree_view->priv->expanded_collapsed_tree = tree;
11964   tree_view->priv->expanded_collapsed_node = node;
11965
11966   if (expand)
11967     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11968   else
11969     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11970 }
11971
11972 static void
11973 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11974 {
11975   if (tree_view->priv->expand_collapse_timeout)
11976     {
11977       g_source_remove (tree_view->priv->expand_collapse_timeout);
11978       tree_view->priv->expand_collapse_timeout = 0;
11979     }
11980
11981   if (tree_view->priv->expanded_collapsed_node != NULL)
11982     {
11983       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11984       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11985
11986       tree_view->priv->expanded_collapsed_node = NULL;
11987     }
11988 }
11989
11990 static void
11991 cancel_arrow_animation (GtkTreeView *tree_view)
11992 {
11993   if (tree_view->priv->expand_collapse_timeout)
11994     {
11995       while (do_expand_collapse (tree_view));
11996
11997       remove_expand_collapse_timeout (tree_view);
11998     }
11999 }
12000
12001 static gboolean
12002 do_expand_collapse (GtkTreeView *tree_view)
12003 {
12004   GtkRBNode *node;
12005   GtkRBTree *tree;
12006   gboolean expanding;
12007   gboolean redraw;
12008
12009   redraw = FALSE;
12010   expanding = TRUE;
12011
12012   node = tree_view->priv->expanded_collapsed_node;
12013   tree = tree_view->priv->expanded_collapsed_tree;
12014
12015   if (node->children == NULL)
12016     expanding = FALSE;
12017
12018   if (expanding)
12019     {
12020       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
12021         {
12022           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12023           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12024
12025           redraw = TRUE;
12026
12027         }
12028       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
12029         {
12030           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12031
12032           redraw = TRUE;
12033         }
12034     }
12035   else
12036     {
12037       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
12038         {
12039           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
12040           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12041
12042           redraw = TRUE;
12043         }
12044       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
12045         {
12046           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
12047
12048           redraw = TRUE;
12049
12050         }
12051     }
12052
12053   if (redraw)
12054     {
12055       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
12056
12057       return TRUE;
12058     }
12059
12060   return FALSE;
12061 }
12062
12063 /**
12064  * gtk_tree_view_collapse_all:
12065  * @tree_view: A #GtkTreeView.
12066  *
12067  * Recursively collapses all visible, expanded nodes in @tree_view.
12068  **/
12069 void
12070 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
12071 {
12072   GtkRBTree *tree;
12073   GtkRBNode *node;
12074   GtkTreePath *path;
12075   gint *indices;
12076
12077   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12078
12079   if (tree_view->priv->tree == NULL)
12080     return;
12081
12082   path = gtk_tree_path_new ();
12083   gtk_tree_path_down (path);
12084   indices = gtk_tree_path_get_indices (path);
12085
12086   tree = tree_view->priv->tree;
12087   node = tree->root;
12088   while (node && node->left != tree->nil)
12089     node = node->left;
12090
12091   while (node)
12092     {
12093       if (node->children)
12094         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12095       indices[0]++;
12096       node = _gtk_rbtree_next (tree, node);
12097     }
12098
12099   gtk_tree_path_free (path);
12100 }
12101
12102 /**
12103  * gtk_tree_view_expand_to_path:
12104  * @tree_view: A #GtkTreeView.
12105  * @path: path to a row.
12106  *
12107  * Expands the row at @path. This will also expand all parent rows of
12108  * @path as necessary.
12109  *
12110  * Since: 2.2
12111  **/
12112 void
12113 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12114                               GtkTreePath *path)
12115 {
12116   gint i, depth;
12117   gint *indices;
12118   GtkTreePath *tmp;
12119
12120   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12121   g_return_if_fail (path != NULL);
12122
12123   depth = gtk_tree_path_get_depth (path);
12124   indices = gtk_tree_path_get_indices (path);
12125
12126   tmp = gtk_tree_path_new ();
12127   g_return_if_fail (tmp != NULL);
12128
12129   for (i = 0; i < depth; i++)
12130     {
12131       gtk_tree_path_append_index (tmp, indices[i]);
12132       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12133     }
12134
12135   gtk_tree_path_free (tmp);
12136 }
12137
12138 /* FIXME the bool return values for expand_row and collapse_row are
12139  * not analagous; they should be TRUE if the row had children and
12140  * was not already in the requested state.
12141  */
12142
12143
12144 static gboolean
12145 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12146                                GtkTreePath *path,
12147                                GtkRBTree   *tree,
12148                                GtkRBNode   *node,
12149                                gboolean     open_all,
12150                                gboolean     animate)
12151 {
12152   GtkTreeIter iter;
12153   GtkTreeIter temp;
12154   gboolean expand;
12155
12156   if (animate)
12157     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12158                   "gtk-enable-animations", &animate,
12159                   NULL);
12160
12161   remove_auto_expand_timeout (tree_view);
12162
12163   if (node->children && !open_all)
12164     return FALSE;
12165
12166   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12167     return FALSE;
12168
12169   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12170   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12171     return FALSE;
12172
12173
12174    if (node->children && open_all)
12175     {
12176       gboolean retval = FALSE;
12177       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12178
12179       gtk_tree_path_append_index (tmp_path, 0);
12180       tree = node->children;
12181       node = tree->root;
12182       while (node->left != tree->nil)
12183         node = node->left;
12184       /* try to expand the children */
12185       do
12186         {
12187          gboolean t;
12188          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12189                                             TRUE, animate);
12190          if (t)
12191            retval = TRUE;
12192
12193          gtk_tree_path_next (tmp_path);
12194          node = _gtk_rbtree_next (tree, node);
12195        }
12196       while (node != NULL);
12197
12198       gtk_tree_path_free (tmp_path);
12199
12200       return retval;
12201     }
12202
12203   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12204
12205   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12206     return FALSE;
12207
12208   if (expand)
12209     return FALSE;
12210
12211   node->children = _gtk_rbtree_new ();
12212   node->children->parent_tree = tree;
12213   node->children->parent_node = node;
12214
12215   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12216
12217   gtk_tree_view_build_tree (tree_view,
12218                             node->children,
12219                             &temp,
12220                             gtk_tree_path_get_depth (path) + 1,
12221                             open_all);
12222
12223   remove_expand_collapse_timeout (tree_view);
12224
12225   if (animate)
12226     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12227
12228   install_presize_handler (tree_view);
12229
12230   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12231   if (open_all && node->children)
12232     {
12233       _gtk_rbtree_traverse (node->children,
12234                             node->children->root,
12235                             G_PRE_ORDER,
12236                             gtk_tree_view_expand_all_emission_helper,
12237                             tree_view);
12238     }
12239   return TRUE;
12240 }
12241
12242
12243 /**
12244  * gtk_tree_view_expand_row:
12245  * @tree_view: a #GtkTreeView
12246  * @path: path to a row
12247  * @open_all: whether to recursively expand, or just expand immediate children
12248  *
12249  * Opens the row so its children are visible.
12250  *
12251  * Return value: %TRUE if the row existed and had children
12252  **/
12253 gboolean
12254 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12255                           GtkTreePath *path,
12256                           gboolean     open_all)
12257 {
12258   GtkRBTree *tree;
12259   GtkRBNode *node;
12260
12261   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12262   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12263   g_return_val_if_fail (path != NULL, FALSE);
12264
12265   if (_gtk_tree_view_find_node (tree_view,
12266                                 path,
12267                                 &tree,
12268                                 &node))
12269     return FALSE;
12270
12271   if (tree != NULL)
12272     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12273   else
12274     return FALSE;
12275 }
12276
12277 static gboolean
12278 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12279                                  GtkTreePath *path,
12280                                  GtkRBTree   *tree,
12281                                  GtkRBNode   *node,
12282                                  gboolean     animate)
12283 {
12284   GtkTreeIter iter;
12285   GtkTreeIter children;
12286   gboolean collapse;
12287   gint x, y;
12288   GList *list;
12289   GdkWindow *child, *parent;
12290
12291   if (animate)
12292     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12293                   "gtk-enable-animations", &animate,
12294                   NULL);
12295
12296   remove_auto_expand_timeout (tree_view);
12297
12298   if (node->children == NULL)
12299     return FALSE;
12300
12301   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12302
12303   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12304
12305   if (collapse)
12306     return FALSE;
12307
12308   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12309    * a chance to prelight the correct node below */
12310
12311   if (tree_view->priv->prelight_tree)
12312     {
12313       GtkRBTree *parent_tree;
12314       GtkRBNode *parent_node;
12315
12316       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12317       parent_node = tree_view->priv->prelight_tree->parent_node;
12318       while (parent_tree)
12319         {
12320           if (parent_tree == tree && parent_node == node)
12321             {
12322               ensure_unprelighted (tree_view);
12323               break;
12324             }
12325           parent_node = parent_tree->parent_node;
12326           parent_tree = parent_tree->parent_tree;
12327         }
12328     }
12329
12330   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12331
12332   for (list = tree_view->priv->columns; list; list = list->next)
12333     {
12334       GtkTreeViewColumn *column = list->data;
12335
12336       if (column->visible == FALSE)
12337         continue;
12338       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12339         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12340     }
12341
12342   if (tree_view->priv->destroy_count_func)
12343     {
12344       GtkTreePath *child_path;
12345       gint child_count = 0;
12346       child_path = gtk_tree_path_copy (path);
12347       gtk_tree_path_down (child_path);
12348       if (node->children)
12349         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12350       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12351       gtk_tree_path_free (child_path);
12352     }
12353
12354   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12355     {
12356       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12357
12358       if (gtk_tree_path_is_ancestor (path, cursor_path))
12359         {
12360           gtk_tree_row_reference_free (tree_view->priv->cursor);
12361           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12362                                                                       tree_view->priv->model,
12363                                                                       path);
12364         }
12365       gtk_tree_path_free (cursor_path);
12366     }
12367
12368   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12369     {
12370       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12371       if (gtk_tree_path_is_ancestor (path, anchor_path))
12372         {
12373           gtk_tree_row_reference_free (tree_view->priv->anchor);
12374           tree_view->priv->anchor = NULL;
12375         }
12376       gtk_tree_path_free (anchor_path);
12377     }
12378
12379   /* Stop a pending double click */
12380   tree_view->priv->last_button_x = -1;
12381   tree_view->priv->last_button_y = -1;
12382
12383   remove_expand_collapse_timeout (tree_view);
12384
12385   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12386     {
12387       _gtk_rbtree_remove (node->children);
12388       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12389     }
12390   else
12391     _gtk_rbtree_remove (node->children);
12392
12393   if (animate)
12394     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12395
12396   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12397     {
12398       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12399     }
12400
12401   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12402
12403   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12404     {
12405       /* now that we've collapsed all rows, we want to try to set the prelight
12406        * again. To do this, we fake a motion event and send it to ourselves. */
12407
12408       child = tree_view->priv->bin_window;
12409       parent = gdk_window_get_parent (child);
12410
12411       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12412         {
12413           GdkEventMotion event;
12414           gint child_x, child_y;
12415
12416           gdk_window_get_position (child, &child_x, &child_y);
12417
12418           event.window = tree_view->priv->bin_window;
12419           event.x = x - child_x;
12420           event.y = y - child_y;
12421
12422           /* despite the fact this isn't a real event, I'm almost positive it will
12423            * never trigger a drag event.  maybe_drag is the only function that uses
12424            * more than just event.x and event.y. */
12425           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12426         }
12427     }
12428
12429   return TRUE;
12430 }
12431
12432 /**
12433  * gtk_tree_view_collapse_row:
12434  * @tree_view: a #GtkTreeView
12435  * @path: path to a row in the @tree_view
12436  *
12437  * Collapses a row (hides its child rows, if they exist).
12438  *
12439  * Return value: %TRUE if the row was collapsed.
12440  **/
12441 gboolean
12442 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12443                             GtkTreePath *path)
12444 {
12445   GtkRBTree *tree;
12446   GtkRBNode *node;
12447
12448   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12449   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12450   g_return_val_if_fail (path != NULL, FALSE);
12451
12452   if (_gtk_tree_view_find_node (tree_view,
12453                                 path,
12454                                 &tree,
12455                                 &node))
12456     return FALSE;
12457
12458   if (tree == NULL || node->children == NULL)
12459     return FALSE;
12460
12461   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12462 }
12463
12464 static void
12465 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12466                                         GtkRBTree              *tree,
12467                                         GtkTreePath            *path,
12468                                         GtkTreeViewMappingFunc  func,
12469                                         gpointer                user_data)
12470 {
12471   GtkRBNode *node;
12472
12473   if (tree == NULL || tree->root == NULL)
12474     return;
12475
12476   node = tree->root;
12477
12478   while (node && node->left != tree->nil)
12479     node = node->left;
12480
12481   while (node)
12482     {
12483       if (node->children)
12484         {
12485           (* func) (tree_view, path, user_data);
12486           gtk_tree_path_down (path);
12487           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12488           gtk_tree_path_up (path);
12489         }
12490       gtk_tree_path_next (path);
12491       node = _gtk_rbtree_next (tree, node);
12492     }
12493 }
12494
12495 /**
12496  * gtk_tree_view_map_expanded_rows:
12497  * @tree_view: A #GtkTreeView
12498  * @func: (scope call): A function to be called
12499  * @data: User data to be passed to the function.
12500  *
12501  * Calls @func on all expanded rows.
12502  **/
12503 void
12504 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12505                                  GtkTreeViewMappingFunc  func,
12506                                  gpointer                user_data)
12507 {
12508   GtkTreePath *path;
12509
12510   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12511   g_return_if_fail (func != NULL);
12512
12513   path = gtk_tree_path_new_first ();
12514
12515   gtk_tree_view_map_expanded_rows_helper (tree_view,
12516                                           tree_view->priv->tree,
12517                                           path, func, user_data);
12518
12519   gtk_tree_path_free (path);
12520 }
12521
12522 /**
12523  * gtk_tree_view_row_expanded:
12524  * @tree_view: A #GtkTreeView.
12525  * @path: A #GtkTreePath to test expansion state.
12526  *
12527  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12528  *
12529  * Return value: %TRUE if #path is expanded.
12530  **/
12531 gboolean
12532 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12533                             GtkTreePath *path)
12534 {
12535   GtkRBTree *tree;
12536   GtkRBNode *node;
12537
12538   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12539   g_return_val_if_fail (path != NULL, FALSE);
12540
12541   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12542
12543   if (node == NULL)
12544     return FALSE;
12545
12546   return (node->children != NULL);
12547 }
12548
12549 /**
12550  * gtk_tree_view_get_reorderable:
12551  * @tree_view: a #GtkTreeView
12552  *
12553  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12554  * gtk_tree_view_set_reorderable().
12555  *
12556  * Return value: %TRUE if the tree can be reordered.
12557  **/
12558 gboolean
12559 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12560 {
12561   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12562
12563   return tree_view->priv->reorderable;
12564 }
12565
12566 /**
12567  * gtk_tree_view_set_reorderable:
12568  * @tree_view: A #GtkTreeView.
12569  * @reorderable: %TRUE, if the tree can be reordered.
12570  *
12571  * This function is a convenience function to allow you to reorder
12572  * models that support the #GtkDragSourceIface and the
12573  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12574  * these.  If @reorderable is %TRUE, then the user can reorder the
12575  * model by dragging and dropping rows. The developer can listen to
12576  * these changes by connecting to the model's row_inserted and
12577  * row_deleted signals. The reordering is implemented by setting up
12578  * the tree view as a drag source and destination. Therefore, drag and
12579  * drop can not be used in a reorderable view for any other purpose.
12580  *
12581  * This function does not give you any degree of control over the order -- any
12582  * reordering is allowed.  If more control is needed, you should probably
12583  * handle drag and drop manually.
12584  **/
12585 void
12586 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12587                                gboolean     reorderable)
12588 {
12589   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12590
12591   reorderable = reorderable != FALSE;
12592
12593   if (tree_view->priv->reorderable == reorderable)
12594     return;
12595
12596   if (reorderable)
12597     {
12598       const GtkTargetEntry row_targets[] = {
12599         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12600       };
12601
12602       gtk_tree_view_enable_model_drag_source (tree_view,
12603                                               GDK_BUTTON1_MASK,
12604                                               row_targets,
12605                                               G_N_ELEMENTS (row_targets),
12606                                               GDK_ACTION_MOVE);
12607       gtk_tree_view_enable_model_drag_dest (tree_view,
12608                                             row_targets,
12609                                             G_N_ELEMENTS (row_targets),
12610                                             GDK_ACTION_MOVE);
12611     }
12612   else
12613     {
12614       gtk_tree_view_unset_rows_drag_source (tree_view);
12615       gtk_tree_view_unset_rows_drag_dest (tree_view);
12616     }
12617
12618   tree_view->priv->reorderable = reorderable;
12619
12620   g_object_notify (G_OBJECT (tree_view), "reorderable");
12621 }
12622
12623 static void
12624 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12625                                GtkTreePath     *path,
12626                                gboolean         clear_and_select,
12627                                gboolean         clamp_node)
12628 {
12629   GtkRBTree *tree = NULL;
12630   GtkRBNode *node = NULL;
12631
12632   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12633     {
12634       GtkTreePath *cursor_path;
12635       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12636       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12637       gtk_tree_path_free (cursor_path);
12638     }
12639
12640   gtk_tree_row_reference_free (tree_view->priv->cursor);
12641   tree_view->priv->cursor = NULL;
12642
12643   /* One cannot set the cursor on a separator.   Also, if
12644    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12645    * before finding the tree and node belonging to path.  The
12646    * path maps to a non-existing path and we will silently bail out.
12647    * We unset tree and node to avoid further processing.
12648    */
12649   if (!row_is_separator (tree_view, NULL, path)
12650       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12651     {
12652       tree_view->priv->cursor =
12653           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12654                                             tree_view->priv->model,
12655                                             path);
12656     }
12657   else
12658     {
12659       tree = NULL;
12660       node = NULL;
12661     }
12662
12663   if (tree != NULL)
12664     {
12665       GtkRBTree *new_tree = NULL;
12666       GtkRBNode *new_node = NULL;
12667
12668       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12669         {
12670           GtkTreeSelectMode mode = 0;
12671
12672           if (tree_view->priv->ctrl_pressed)
12673             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12674           if (tree_view->priv->shift_pressed)
12675             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12676
12677           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12678                                                     node, tree, path, mode,
12679                                                     FALSE);
12680         }
12681
12682       /* We have to re-find tree and node here again, somebody might have
12683        * cleared the node or the whole tree in the GtkTreeSelection::changed
12684        * callback. If the nodes differ we bail out here.
12685        */
12686       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12687
12688       if (tree != new_tree || node != new_node)
12689         return;
12690
12691       if (clamp_node)
12692         {
12693           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12694           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12695         }
12696     }
12697
12698   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12699 }
12700
12701 /**
12702  * gtk_tree_view_get_cursor:
12703  * @tree_view: A #GtkTreeView
12704  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12705  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12706  *
12707  * Fills in @path and @focus_column with the current path and focus column.  If
12708  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12709  * currently has focus, then *@focus_column will be %NULL.
12710  *
12711  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12712  * you are done with it.
12713  **/
12714 void
12715 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12716                           GtkTreePath       **path,
12717                           GtkTreeViewColumn **focus_column)
12718 {
12719   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12720
12721   if (path)
12722     {
12723       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12724         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12725       else
12726         *path = NULL;
12727     }
12728
12729   if (focus_column)
12730     {
12731       *focus_column = tree_view->priv->focus_column;
12732     }
12733 }
12734
12735 /**
12736  * gtk_tree_view_set_cursor:
12737  * @tree_view: A #GtkTreeView
12738  * @path: A #GtkTreePath
12739  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12740  * @start_editing: %TRUE if the specified cell should start being edited.
12741  *
12742  * Sets the current keyboard focus to be at @path, and selects it.  This is
12743  * useful when you want to focus the user's attention on a particular row.  If
12744  * @focus_column is not %NULL, then focus is given to the column specified by
12745  * it. Additionally, if @focus_column is specified, and @start_editing is
12746  * %TRUE, then editing should be started in the specified cell.
12747  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12748  * in order to give keyboard focus to the widget.  Please note that editing
12749  * can only happen when the widget is realized.
12750  *
12751  * If @path is invalid for @model, the current cursor (if any) will be unset
12752  * and the function will return without failing.
12753  **/
12754 void
12755 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12756                           GtkTreePath       *path,
12757                           GtkTreeViewColumn *focus_column,
12758                           gboolean           start_editing)
12759 {
12760   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12761                                     NULL, start_editing);
12762 }
12763
12764 /**
12765  * gtk_tree_view_set_cursor_on_cell:
12766  * @tree_view: A #GtkTreeView
12767  * @path: A #GtkTreePath
12768  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12769  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12770  * @start_editing: %TRUE if the specified cell should start being edited.
12771  *
12772  * Sets the current keyboard focus to be at @path, and selects it.  This is
12773  * useful when you want to focus the user's attention on a particular row.  If
12774  * @focus_column is not %NULL, then focus is given to the column specified by
12775  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12776  * contains 2 or more editable or activatable cells, then focus is given to
12777  * the cell specified by @focus_cell. Additionally, if @focus_column is
12778  * specified, and @start_editing is %TRUE, then editing should be started in
12779  * the specified cell.  This function is often followed by
12780  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12781  * widget.  Please note that editing can only happen when the widget is
12782  * realized.
12783  *
12784  * If @path is invalid for @model, the current cursor (if any) will be unset
12785  * and the function will return without failing.
12786  *
12787  * Since: 2.2
12788  **/
12789 void
12790 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12791                                   GtkTreePath       *path,
12792                                   GtkTreeViewColumn *focus_column,
12793                                   GtkCellRenderer   *focus_cell,
12794                                   gboolean           start_editing)
12795 {
12796   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12797   g_return_if_fail (path != NULL);
12798   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12799
12800   if (!tree_view->priv->model)
12801     return;
12802
12803   if (focus_cell)
12804     {
12805       g_return_if_fail (focus_column);
12806       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12807     }
12808
12809   /* cancel the current editing, if it exists */
12810   if (tree_view->priv->edited_column &&
12811       tree_view->priv->edited_column->editable_widget)
12812     gtk_tree_view_stop_editing (tree_view, TRUE);
12813
12814   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12815
12816   if (focus_column && focus_column->visible)
12817     {
12818       GList *list;
12819       gboolean column_in_tree = FALSE;
12820
12821       for (list = tree_view->priv->columns; list; list = list->next)
12822         if (list->data == focus_column)
12823           {
12824             column_in_tree = TRUE;
12825             break;
12826           }
12827       g_return_if_fail (column_in_tree);
12828       tree_view->priv->focus_column = focus_column;
12829       if (focus_cell)
12830         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12831       if (start_editing)
12832         gtk_tree_view_start_editing (tree_view, path);
12833     }
12834 }
12835
12836 /**
12837  * gtk_tree_view_get_bin_window:
12838  * @tree_view: A #GtkTreeView
12839  *
12840  * Returns the window that @tree_view renders to.
12841  * This is used primarily to compare to <literal>event->window</literal>
12842  * to confirm that the event on @tree_view is on the right window.
12843  *
12844  * Return value: (transfer none): A #GdkWindow, or %NULL when @tree_view
12845  *     hasn't been realized yet
12846  **/
12847 GdkWindow *
12848 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12849 {
12850   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12851
12852   return tree_view->priv->bin_window;
12853 }
12854
12855 /**
12856  * gtk_tree_view_get_path_at_pos:
12857  * @tree_view: A #GtkTreeView.
12858  * @x: The x position to be identified (relative to bin_window).
12859  * @y: The y position to be identified (relative to bin_window).
12860  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12861  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12862  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12863  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12864  *
12865  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12866  * (please see gtk_tree_view_get_bin_window()).
12867  * That is, @x and @y are relative to an events coordinates. @x and @y must
12868  * come from an event on the @tree_view only where <literal>event->window ==
12869  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12870  * things like popup menus. If @path is non-%NULL, then it will be filled
12871  * with the #GtkTreePath at that point.  This path should be freed with
12872  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12873  * with the column at that point.  @cell_x and @cell_y return the coordinates
12874  * relative to the cell background (i.e. the @background_area passed to
12875  * gtk_cell_renderer_render()).  This function is only meaningful if
12876  * @tree_view is realized.  Therefore this function will always return %FALSE
12877  * if @tree_view is not realized or does not have a model.
12878  *
12879  * For converting widget coordinates (eg. the ones you get from
12880  * GtkWidget::query-tooltip), please see
12881  * gtk_tree_view_convert_widget_to_bin_window_coords().
12882  *
12883  * Return value: %TRUE if a row exists at that coordinate.
12884  **/
12885 gboolean
12886 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12887                                gint                x,
12888                                gint                y,
12889                                GtkTreePath       **path,
12890                                GtkTreeViewColumn **column,
12891                                gint               *cell_x,
12892                                gint               *cell_y)
12893 {
12894   GtkRBTree *tree;
12895   GtkRBNode *node;
12896   gint y_offset;
12897
12898   g_return_val_if_fail (tree_view != NULL, FALSE);
12899
12900   if (path)
12901     *path = NULL;
12902   if (column)
12903     *column = NULL;
12904
12905   if (tree_view->priv->bin_window == NULL)
12906     return FALSE;
12907
12908   if (tree_view->priv->tree == NULL)
12909     return FALSE;
12910
12911   if (x > tree_view->priv->hadjustment->upper)
12912     return FALSE;
12913
12914   if (x < 0 || y < 0)
12915     return FALSE;
12916
12917   if (column || cell_x)
12918     {
12919       GtkTreeViewColumn *tmp_column;
12920       GtkTreeViewColumn *last_column = NULL;
12921       GList *list;
12922       gint remaining_x = x;
12923       gboolean found = FALSE;
12924       gboolean rtl;
12925
12926       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12927       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12928            list;
12929            list = (rtl ? list->prev : list->next))
12930         {
12931           tmp_column = list->data;
12932
12933           if (tmp_column->visible == FALSE)
12934             continue;
12935
12936           last_column = tmp_column;
12937           if (remaining_x <= tmp_column->width)
12938             {
12939               found = TRUE;
12940
12941               if (column)
12942                 *column = tmp_column;
12943
12944               if (cell_x)
12945                 *cell_x = remaining_x;
12946
12947               break;
12948             }
12949           remaining_x -= tmp_column->width;
12950         }
12951
12952       /* If found is FALSE and there is a last_column, then it the remainder
12953        * space is in that area
12954        */
12955       if (!found)
12956         {
12957           if (last_column)
12958             {
12959               if (column)
12960                 *column = last_column;
12961
12962               if (cell_x)
12963                 *cell_x = last_column->width + remaining_x;
12964             }
12965           else
12966             {
12967               return FALSE;
12968             }
12969         }
12970     }
12971
12972   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12973                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12974                                       &tree, &node);
12975
12976   if (tree == NULL)
12977     return FALSE;
12978
12979   if (cell_y)
12980     *cell_y = y_offset;
12981
12982   if (path)
12983     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12984
12985   return TRUE;
12986 }
12987
12988
12989 /**
12990  * gtk_tree_view_get_cell_area:
12991  * @tree_view: a #GtkTreeView
12992  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12993  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12994  * @rect: rectangle to fill with cell rect
12995  *
12996  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12997  * row specified by @path and the column specified by @column.  If @path is
12998  * %NULL, or points to a path not currently displayed, the @y and @height fields
12999  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13000  * fields will be filled with 0.  The sum of all cell rects does not cover the
13001  * entire tree; there are extra pixels in between rows, for example. The
13002  * returned rectangle is equivalent to the @cell_area passed to
13003  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
13004  * realized.
13005  **/
13006 void
13007 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
13008                              GtkTreePath        *path,
13009                              GtkTreeViewColumn  *column,
13010                              GdkRectangle       *rect)
13011 {
13012   GtkAllocation allocation;
13013   GtkRBTree *tree = NULL;
13014   GtkRBNode *node = NULL;
13015   gint vertical_separator;
13016   gint horizontal_separator;
13017
13018   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13019   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13020   g_return_if_fail (rect != NULL);
13021   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
13022   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
13023
13024   gtk_widget_style_get (GTK_WIDGET (tree_view),
13025                         "vertical-separator", &vertical_separator,
13026                         "horizontal-separator", &horizontal_separator,
13027                         NULL);
13028
13029   rect->x = 0;
13030   rect->y = 0;
13031   rect->width = 0;
13032   rect->height = 0;
13033
13034   if (column)
13035     {
13036       gtk_widget_get_allocation (column->button, &allocation);
13037       rect->x = allocation.x + horizontal_separator/2;
13038       rect->width = allocation.width - horizontal_separator;
13039     }
13040
13041   if (path)
13042     {
13043       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
13044
13045       /* Get vertical coords */
13046       if ((!ret && tree == NULL) || ret)
13047         return;
13048
13049       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
13050       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
13051
13052       if (column &&
13053           gtk_tree_view_is_expander_column (tree_view, column))
13054         {
13055           gint depth = gtk_tree_path_get_depth (path);
13056           gboolean rtl;
13057
13058           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13059
13060           if (!rtl)
13061             rect->x += (depth - 1) * tree_view->priv->level_indentation;
13062           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
13063
13064           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
13065             {
13066               if (!rtl)
13067                 rect->x += depth * tree_view->priv->expander_size;
13068               rect->width -= depth * tree_view->priv->expander_size;
13069             }
13070
13071           rect->width = MAX (rect->width, 0);
13072         }
13073     }
13074 }
13075
13076 /**
13077  * gtk_tree_view_get_background_area:
13078  * @tree_view: a #GtkTreeView
13079  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
13080  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
13081  * @rect: rectangle to fill with cell background rect
13082  *
13083  * Fills the bounding rectangle in bin_window coordinates for the cell at the
13084  * row specified by @path and the column specified by @column.  If @path is
13085  * %NULL, or points to a node not found in the tree, the @y and @height fields of
13086  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
13087  * fields will be filled with 0.  The returned rectangle is equivalent to the
13088  * @background_area passed to gtk_cell_renderer_render().  These background
13089  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
13090  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
13091  * itself, excluding surrounding borders and the tree expander area.
13092  *
13093  **/
13094 void
13095 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13096                                    GtkTreePath        *path,
13097                                    GtkTreeViewColumn  *column,
13098                                    GdkRectangle       *rect)
13099 {
13100   GtkRBTree *tree = NULL;
13101   GtkRBNode *node = NULL;
13102
13103   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13104   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13105   g_return_if_fail (rect != NULL);
13106
13107   rect->x = 0;
13108   rect->y = 0;
13109   rect->width = 0;
13110   rect->height = 0;
13111
13112   if (path)
13113     {
13114       /* Get vertical coords */
13115
13116       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13117           tree == NULL)
13118         return;
13119
13120       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13121
13122       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13123     }
13124
13125   if (column)
13126     {
13127       gint x2 = 0;
13128
13129       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13130       rect->width = x2 - rect->x;
13131     }
13132 }
13133
13134 /**
13135  * gtk_tree_view_get_visible_rect:
13136  * @tree_view: a #GtkTreeView
13137  * @visible_rect: rectangle to fill
13138  *
13139  * Fills @visible_rect with the currently-visible region of the
13140  * buffer, in tree coordinates. Convert to bin_window coordinates with
13141  * gtk_tree_view_convert_tree_to_bin_window_coords().
13142  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13143  * scrollable area of the tree.
13144  **/
13145 void
13146 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13147                                 GdkRectangle *visible_rect)
13148 {
13149   GtkAllocation allocation;
13150   GtkWidget *widget;
13151
13152   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13153
13154   widget = GTK_WIDGET (tree_view);
13155
13156   if (visible_rect)
13157     {
13158       gtk_widget_get_allocation (widget, &allocation);
13159       visible_rect->x = tree_view->priv->hadjustment->value;
13160       visible_rect->y = tree_view->priv->vadjustment->value;
13161       visible_rect->width = allocation.width;
13162       visible_rect->height = allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13163     }
13164 }
13165
13166 /**
13167  * gtk_tree_view_convert_widget_to_tree_coords:
13168  * @tree_view: a #GtkTreeView
13169  * @wx: X coordinate relative to the widget
13170  * @wy: Y coordinate relative to the widget
13171  * @tx: return location for tree X coordinate
13172  * @ty: return location for tree Y coordinate
13173  *
13174  * Converts widget coordinates to coordinates for the
13175  * tree (the full scrollable area of the tree).
13176  *
13177  * Since: 2.12
13178  **/
13179 void
13180 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13181                                              gint         wx,
13182                                              gint         wy,
13183                                              gint        *tx,
13184                                              gint        *ty)
13185 {
13186   gint x, y;
13187
13188   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13189
13190   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13191                                                      wx, wy,
13192                                                      &x, &y);
13193   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13194                                                    x, y,
13195                                                    tx, ty);
13196 }
13197
13198 /**
13199  * gtk_tree_view_convert_tree_to_widget_coords:
13200  * @tree_view: a #GtkTreeView
13201  * @tx: X coordinate relative to the tree
13202  * @ty: Y coordinate relative to the tree
13203  * @wx: return location for widget X coordinate
13204  * @wy: return location for widget Y coordinate
13205  *
13206  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13207  * to widget coordinates.
13208  *
13209  * Since: 2.12
13210  **/
13211 void
13212 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13213                                              gint         tx,
13214                                              gint         ty,
13215                                              gint        *wx,
13216                                              gint        *wy)
13217 {
13218   gint x, y;
13219
13220   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13221
13222   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13223                                                    tx, ty,
13224                                                    &x, &y);
13225   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13226                                                      x, y,
13227                                                      wx, wy);
13228 }
13229
13230 /**
13231  * gtk_tree_view_convert_widget_to_bin_window_coords:
13232  * @tree_view: a #GtkTreeView
13233  * @wx: X coordinate relative to the widget
13234  * @wy: Y coordinate relative to the widget
13235  * @bx: return location for bin_window X coordinate
13236  * @by: return location for bin_window Y coordinate
13237  *
13238  * Converts widget coordinates to coordinates for the bin_window
13239  * (see gtk_tree_view_get_bin_window()).
13240  *
13241  * Since: 2.12
13242  **/
13243 void
13244 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13245                                                    gint         wx,
13246                                                    gint         wy,
13247                                                    gint        *bx,
13248                                                    gint        *by)
13249 {
13250   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13251
13252   if (bx)
13253     *bx = wx + tree_view->priv->hadjustment->value;
13254   if (by)
13255     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13256 }
13257
13258 /**
13259  * gtk_tree_view_convert_bin_window_to_widget_coords:
13260  * @tree_view: a #GtkTreeView
13261  * @bx: bin_window X coordinate
13262  * @by: bin_window Y coordinate
13263  * @wx: return location for widget X coordinate
13264  * @wy: return location for widget Y coordinate
13265  *
13266  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13267  * to widget relative coordinates.
13268  *
13269  * Since: 2.12
13270  **/
13271 void
13272 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13273                                                    gint         bx,
13274                                                    gint         by,
13275                                                    gint        *wx,
13276                                                    gint        *wy)
13277 {
13278   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13279
13280   if (wx)
13281     *wx = bx - tree_view->priv->hadjustment->value;
13282   if (wy)
13283     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13284 }
13285
13286 /**
13287  * gtk_tree_view_convert_tree_to_bin_window_coords:
13288  * @tree_view: a #GtkTreeView
13289  * @tx: tree X coordinate
13290  * @ty: tree Y coordinate
13291  * @bx: return location for X coordinate relative to bin_window
13292  * @by: return location for Y coordinate relative to bin_window
13293  *
13294  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13295  * to bin_window coordinates.
13296  *
13297  * Since: 2.12
13298  **/
13299 void
13300 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13301                                                  gint         tx,
13302                                                  gint         ty,
13303                                                  gint        *bx,
13304                                                  gint        *by)
13305 {
13306   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13307
13308   if (bx)
13309     *bx = tx;
13310   if (by)
13311     *by = ty - tree_view->priv->dy;
13312 }
13313
13314 /**
13315  * gtk_tree_view_convert_bin_window_to_tree_coords:
13316  * @tree_view: a #GtkTreeView
13317  * @bx: X coordinate relative to bin_window
13318  * @by: Y coordinate relative to bin_window
13319  * @tx: return location for tree X coordinate
13320  * @ty: return location for tree Y coordinate
13321  *
13322  * Converts bin_window coordinates to coordinates for the
13323  * tree (the full scrollable area of the tree).
13324  *
13325  * Since: 2.12
13326  **/
13327 void
13328 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13329                                                  gint         bx,
13330                                                  gint         by,
13331                                                  gint        *tx,
13332                                                  gint        *ty)
13333 {
13334   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13335
13336   if (tx)
13337     *tx = bx;
13338   if (ty)
13339     *ty = by + tree_view->priv->dy;
13340 }
13341
13342
13343
13344 /**
13345  * gtk_tree_view_get_visible_range:
13346  * @tree_view: A #GtkTreeView
13347  * @start_path: (allow-none): Return location for start of region, or %NULL.
13348  * @end_path: (allow-none): Return location for end of region, or %NULL.
13349  *
13350  * Sets @start_path and @end_path to be the first and last visible path.
13351  * Note that there may be invisible paths in between.
13352  *
13353  * The paths should be freed with gtk_tree_path_free() after use.
13354  *
13355  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13356  *
13357  * Since: 2.8
13358  **/
13359 gboolean
13360 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13361                                  GtkTreePath **start_path,
13362                                  GtkTreePath **end_path)
13363 {
13364   GtkRBTree *tree;
13365   GtkRBNode *node;
13366   gboolean retval;
13367
13368   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13369
13370   if (!tree_view->priv->tree)
13371     return FALSE;
13372
13373   retval = TRUE;
13374
13375   if (start_path)
13376     {
13377       _gtk_rbtree_find_offset (tree_view->priv->tree,
13378                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13379                                &tree, &node);
13380       if (node)
13381         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13382       else
13383         retval = FALSE;
13384     }
13385
13386   if (end_path)
13387     {
13388       gint y;
13389
13390       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13391         y = tree_view->priv->height - 1;
13392       else
13393         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13394
13395       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13396       if (node)
13397         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13398       else
13399         retval = FALSE;
13400     }
13401
13402   return retval;
13403 }
13404
13405 static void
13406 unset_reorderable (GtkTreeView *tree_view)
13407 {
13408   if (tree_view->priv->reorderable)
13409     {
13410       tree_view->priv->reorderable = FALSE;
13411       g_object_notify (G_OBJECT (tree_view), "reorderable");
13412     }
13413 }
13414
13415 /**
13416  * gtk_tree_view_enable_model_drag_source:
13417  * @tree_view: a #GtkTreeView
13418  * @start_button_mask: Mask of allowed buttons to start drag
13419  * @targets: the table of targets that the drag will support
13420  * @n_targets: the number of items in @targets
13421  * @actions: the bitmask of possible actions for a drag from this
13422  *    widget
13423  *
13424  * Turns @tree_view into a drag source for automatic DND. Calling this
13425  * method sets #GtkTreeView:reorderable to %FALSE.
13426  **/
13427 void
13428 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13429                                         GdkModifierType           start_button_mask,
13430                                         const GtkTargetEntry     *targets,
13431                                         gint                      n_targets,
13432                                         GdkDragAction             actions)
13433 {
13434   TreeViewDragInfo *di;
13435
13436   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13437
13438   gtk_drag_source_set (GTK_WIDGET (tree_view),
13439                        0,
13440                        targets,
13441                        n_targets,
13442                        actions);
13443
13444   di = ensure_info (tree_view);
13445
13446   di->start_button_mask = start_button_mask;
13447   di->source_actions = actions;
13448   di->source_set = TRUE;
13449
13450   unset_reorderable (tree_view);
13451 }
13452
13453 /**
13454  * gtk_tree_view_enable_model_drag_dest:
13455  * @tree_view: a #GtkTreeView
13456  * @targets: the table of targets that the drag will support
13457  * @n_targets: the number of items in @targets
13458  * @actions: the bitmask of possible actions for a drag from this
13459  *    widget
13460  *
13461  * Turns @tree_view into a drop destination for automatic DND. Calling
13462  * this method sets #GtkTreeView:reorderable to %FALSE.
13463  **/
13464 void
13465 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13466                                       const GtkTargetEntry     *targets,
13467                                       gint                      n_targets,
13468                                       GdkDragAction             actions)
13469 {
13470   TreeViewDragInfo *di;
13471
13472   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13473
13474   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13475                      0,
13476                      targets,
13477                      n_targets,
13478                      actions);
13479
13480   di = ensure_info (tree_view);
13481   di->dest_set = TRUE;
13482
13483   unset_reorderable (tree_view);
13484 }
13485
13486 /**
13487  * gtk_tree_view_unset_rows_drag_source:
13488  * @tree_view: a #GtkTreeView
13489  *
13490  * Undoes the effect of
13491  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13492  * #GtkTreeView:reorderable to %FALSE.
13493  **/
13494 void
13495 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13496 {
13497   TreeViewDragInfo *di;
13498
13499   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13500
13501   di = get_info (tree_view);
13502
13503   if (di)
13504     {
13505       if (di->source_set)
13506         {
13507           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13508           di->source_set = FALSE;
13509         }
13510
13511       if (!di->dest_set && !di->source_set)
13512         remove_info (tree_view);
13513     }
13514
13515   unset_reorderable (tree_view);
13516 }
13517
13518 /**
13519  * gtk_tree_view_unset_rows_drag_dest:
13520  * @tree_view: a #GtkTreeView
13521  *
13522  * Undoes the effect of
13523  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13524  * #GtkTreeView:reorderable to %FALSE.
13525  **/
13526 void
13527 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13528 {
13529   TreeViewDragInfo *di;
13530
13531   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13532
13533   di = get_info (tree_view);
13534
13535   if (di)
13536     {
13537       if (di->dest_set)
13538         {
13539           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13540           di->dest_set = FALSE;
13541         }
13542
13543       if (!di->dest_set && !di->source_set)
13544         remove_info (tree_view);
13545     }
13546
13547   unset_reorderable (tree_view);
13548 }
13549
13550 /**
13551  * gtk_tree_view_set_drag_dest_row:
13552  * @tree_view: a #GtkTreeView
13553  * @path: (allow-none): The path of the row to highlight, or %NULL.
13554  * @pos: Specifies whether to drop before, after or into the row
13555  *
13556  * Sets the row that is highlighted for feedback.
13557  **/
13558 void
13559 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13560                                  GtkTreePath            *path,
13561                                  GtkTreeViewDropPosition pos)
13562 {
13563   GtkTreePath *current_dest;
13564
13565   /* Note; this function is exported to allow a custom DND
13566    * implementation, so it can't touch TreeViewDragInfo
13567    */
13568
13569   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13570
13571   current_dest = NULL;
13572
13573   if (tree_view->priv->drag_dest_row)
13574     {
13575       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13576       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13577     }
13578
13579   /* special case a drop on an empty model */
13580   tree_view->priv->empty_view_drop = 0;
13581
13582   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13583       && gtk_tree_path_get_depth (path) == 1
13584       && gtk_tree_path_get_indices (path)[0] == 0)
13585     {
13586       gint n_children;
13587
13588       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13589                                                    NULL);
13590
13591       if (!n_children)
13592         tree_view->priv->empty_view_drop = 1;
13593     }
13594
13595   tree_view->priv->drag_dest_pos = pos;
13596
13597   if (path)
13598     {
13599       tree_view->priv->drag_dest_row =
13600         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13601       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13602     }
13603   else
13604     tree_view->priv->drag_dest_row = NULL;
13605
13606   if (current_dest)
13607     {
13608       GtkRBTree *tree, *new_tree;
13609       GtkRBNode *node, *new_node;
13610
13611       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13612       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13613
13614       if (tree && node)
13615         {
13616           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13617           if (new_tree && new_node)
13618             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13619
13620           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13621           if (new_tree && new_node)
13622             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13623         }
13624       gtk_tree_path_free (current_dest);
13625     }
13626 }
13627
13628 /**
13629  * gtk_tree_view_get_drag_dest_row:
13630  * @tree_view: a #GtkTreeView
13631  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13632  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13633  *
13634  * Gets information about the row that is highlighted for feedback.
13635  **/
13636 void
13637 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13638                                  GtkTreePath             **path,
13639                                  GtkTreeViewDropPosition  *pos)
13640 {
13641   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13642
13643   if (path)
13644     {
13645       if (tree_view->priv->drag_dest_row)
13646         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13647       else
13648         {
13649           if (tree_view->priv->empty_view_drop)
13650             *path = gtk_tree_path_new_from_indices (0, -1);
13651           else
13652             *path = NULL;
13653         }
13654     }
13655
13656   if (pos)
13657     *pos = tree_view->priv->drag_dest_pos;
13658 }
13659
13660 /**
13661  * gtk_tree_view_get_dest_row_at_pos:
13662  * @tree_view: a #GtkTreeView
13663  * @drag_x: the position to determine the destination row for
13664  * @drag_y: the position to determine the destination row for
13665  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13666  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13667  *
13668  * Determines the destination row for a given position.  @drag_x and
13669  * @drag_y are expected to be in widget coordinates.  This function is only
13670  * meaningful if @tree_view is realized.  Therefore this function will always
13671  * return %FALSE if @tree_view is not realized or does not have a model.
13672  *
13673  * Return value: whether there is a row at the given position, %TRUE if this
13674  * is indeed the case.
13675  **/
13676 gboolean
13677 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13678                                    gint                     drag_x,
13679                                    gint                     drag_y,
13680                                    GtkTreePath            **path,
13681                                    GtkTreeViewDropPosition *pos)
13682 {
13683   gint cell_y;
13684   gint bin_x, bin_y;
13685   gdouble offset_into_row;
13686   gdouble third;
13687   GdkRectangle cell;
13688   GtkTreeViewColumn *column = NULL;
13689   GtkTreePath *tmp_path = NULL;
13690
13691   /* Note; this function is exported to allow a custom DND
13692    * implementation, so it can't touch TreeViewDragInfo
13693    */
13694
13695   g_return_val_if_fail (tree_view != NULL, FALSE);
13696   g_return_val_if_fail (drag_x >= 0, FALSE);
13697   g_return_val_if_fail (drag_y >= 0, FALSE);
13698
13699   if (path)
13700     *path = NULL;
13701
13702   if (tree_view->priv->bin_window == NULL)
13703     return FALSE;
13704
13705   if (tree_view->priv->tree == NULL)
13706     return FALSE;
13707
13708   /* If in the top third of a row, we drop before that row; if
13709    * in the bottom third, drop after that row; if in the middle,
13710    * and the row has children, drop into the row.
13711    */
13712   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13713                                                      &bin_x, &bin_y);
13714
13715   if (!gtk_tree_view_get_path_at_pos (tree_view,
13716                                       bin_x,
13717                                       bin_y,
13718                                       &tmp_path,
13719                                       &column,
13720                                       NULL,
13721                                       &cell_y))
13722     return FALSE;
13723
13724   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13725                                      &cell);
13726
13727   offset_into_row = cell_y;
13728
13729   if (path)
13730     *path = tmp_path;
13731   else
13732     gtk_tree_path_free (tmp_path);
13733
13734   tmp_path = NULL;
13735
13736   third = cell.height / 3.0;
13737
13738   if (pos)
13739     {
13740       if (offset_into_row < third)
13741         {
13742           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13743         }
13744       else if (offset_into_row < (cell.height / 2.0))
13745         {
13746           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13747         }
13748       else if (offset_into_row < third * 2.0)
13749         {
13750           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13751         }
13752       else
13753         {
13754           *pos = GTK_TREE_VIEW_DROP_AFTER;
13755         }
13756     }
13757
13758   return TRUE;
13759 }
13760
13761
13762
13763 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13764 /**
13765  * gtk_tree_view_create_row_drag_icon:
13766  * @tree_view: a #GtkTreeView
13767  * @path: a #GtkTreePath in @tree_view
13768  *
13769  * Creates a #cairo_surface_t representation of the row at @path.
13770  * This image is used for a drag icon.
13771  *
13772  * Return value: (transfer full): a newly-allocated surface of the drag icon.
13773  **/
13774 cairo_surface_t *
13775 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13776                                     GtkTreePath  *path)
13777 {
13778   GtkTreeIter   iter;
13779   GtkRBTree    *tree;
13780   GtkRBNode    *node;
13781   GtkStyle *style;
13782   gint cell_offset;
13783   GList *list;
13784   GdkRectangle background_area;
13785   GtkWidget *widget;
13786   gint depth;
13787   /* start drawing inside the black outline */
13788   gint x = 1, y = 1;
13789   cairo_surface_t *surface;
13790   gint bin_window_width;
13791   gboolean is_separator = FALSE;
13792   gboolean rtl;
13793   cairo_t *cr;
13794
13795   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13796   g_return_val_if_fail (path != NULL, NULL);
13797
13798   widget = GTK_WIDGET (tree_view);
13799
13800   if (!gtk_widget_get_realized (widget))
13801     return NULL;
13802
13803   depth = gtk_tree_path_get_depth (path);
13804
13805   _gtk_tree_view_find_node (tree_view,
13806                             path,
13807                             &tree,
13808                             &node);
13809
13810   if (tree == NULL)
13811     return NULL;
13812
13813   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13814                                 &iter,
13815                                 path))
13816     return NULL;
13817
13818   style = gtk_widget_get_style (widget);
13819
13820   is_separator = row_is_separator (tree_view, &iter, NULL);
13821
13822   cell_offset = x;
13823
13824   background_area.y = y;
13825   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13826
13827   gdk_drawable_get_size (tree_view->priv->bin_window,
13828                          &bin_window_width, NULL);
13829
13830   surface = gdk_window_create_similar_surface (tree_view->priv->bin_window,
13831                                                CAIRO_CONTENT_COLOR,
13832                                                bin_window_width + 2,
13833                                                background_area.height + 2);
13834
13835   cr = cairo_create (surface);
13836   gdk_cairo_set_source_color (cr, &style->base [gtk_widget_get_state (widget)]);
13837   cairo_paint (cr);
13838
13839   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13840
13841   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13842       list;
13843       list = (rtl ? list->prev : list->next))
13844     {
13845       GtkTreeViewColumn *column = list->data;
13846       GdkRectangle cell_area;
13847       gint vertical_separator;
13848
13849       if (!column->visible)
13850         continue;
13851
13852       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13853                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13854                                                node->children?TRUE:FALSE);
13855
13856       background_area.x = cell_offset;
13857       background_area.width = column->width;
13858
13859       gtk_widget_style_get (widget,
13860                             "vertical-separator", &vertical_separator,
13861                             NULL);
13862
13863       cell_area = background_area;
13864
13865       cell_area.y += vertical_separator / 2;
13866       cell_area.height -= vertical_separator;
13867
13868       if (gtk_tree_view_is_expander_column (tree_view, column))
13869         {
13870           if (!rtl)
13871             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13872           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13873
13874           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13875             {
13876               if (!rtl)
13877                 cell_area.x += depth * tree_view->priv->expander_size;
13878               cell_area.width -= depth * tree_view->priv->expander_size;
13879             }
13880         }
13881
13882       if (gtk_tree_view_column_cell_is_visible (column))
13883         {
13884           if (is_separator)
13885             gtk_cairo_paint_hline (style,
13886                                    cr,
13887                                    GTK_STATE_NORMAL,
13888                                    widget,
13889                                    NULL,
13890                                    cell_area.x,
13891                                    cell_area.x + cell_area.width,
13892                                    cell_area.y + cell_area.height / 2);
13893           else
13894             _gtk_tree_view_column_cell_render (column,
13895                                                cr,
13896                                                &background_area,
13897                                                &cell_area,
13898                                                0);
13899         }
13900       cell_offset += column->width;
13901     }
13902
13903   cairo_set_source_rgb (cr, 0, 0, 0);
13904   cairo_rectangle (cr,
13905                    0.5, 0.5,
13906                    bin_window_width + 1,
13907                    background_area.height + 1);
13908   cairo_set_line_width (cr, 1.0);
13909   cairo_stroke (cr);
13910
13911   cairo_destroy (cr);
13912
13913   cairo_surface_set_device_offset (surface, 2, 2);
13914
13915   return surface;
13916 }
13917
13918
13919 /**
13920  * gtk_tree_view_set_destroy_count_func:
13921  * @tree_view: A #GtkTreeView
13922  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13923  * @data: (allow-none): User data to be passed to @func, or %NULL
13924  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13925  *
13926  * This function should almost never be used.  It is meant for private use by
13927  * ATK for determining the number of visible children that are removed when the
13928  * user collapses a row, or a row is deleted.
13929  **/
13930 void
13931 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13932                                       GtkTreeDestroyCountFunc  func,
13933                                       gpointer                 data,
13934                                       GDestroyNotify           destroy)
13935 {
13936   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13937
13938   if (tree_view->priv->destroy_count_destroy)
13939     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13940
13941   tree_view->priv->destroy_count_func = func;
13942   tree_view->priv->destroy_count_data = data;
13943   tree_view->priv->destroy_count_destroy = destroy;
13944 }
13945
13946
13947 /*
13948  * Interactive search
13949  */
13950
13951 /**
13952  * gtk_tree_view_set_enable_search:
13953  * @tree_view: A #GtkTreeView
13954  * @enable_search: %TRUE, if the user can search interactively
13955  *
13956  * If @enable_search is set, then the user can type in text to search through
13957  * the tree interactively (this is sometimes called "typeahead find").
13958  *
13959  * Note that even if this is %FALSE, the user can still initiate a search
13960  * using the "start-interactive-search" key binding.
13961  */
13962 void
13963 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13964                                  gboolean     enable_search)
13965 {
13966   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13967
13968   enable_search = !!enable_search;
13969
13970   if (tree_view->priv->enable_search != enable_search)
13971     {
13972        tree_view->priv->enable_search = enable_search;
13973        g_object_notify (G_OBJECT (tree_view), "enable-search");
13974     }
13975 }
13976
13977 /**
13978  * gtk_tree_view_get_enable_search:
13979  * @tree_view: A #GtkTreeView
13980  *
13981  * Returns whether or not the tree allows to start interactive searching
13982  * by typing in text.
13983  *
13984  * Return value: whether or not to let the user search interactively
13985  */
13986 gboolean
13987 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13988 {
13989   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13990
13991   return tree_view->priv->enable_search;
13992 }
13993
13994
13995 /**
13996  * gtk_tree_view_get_search_column:
13997  * @tree_view: A #GtkTreeView
13998  *
13999  * Gets the column searched on by the interactive search code.
14000  *
14001  * Return value: the column the interactive search code searches in.
14002  */
14003 gint
14004 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
14005 {
14006   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
14007
14008   return (tree_view->priv->search_column);
14009 }
14010
14011 /**
14012  * gtk_tree_view_set_search_column:
14013  * @tree_view: A #GtkTreeView
14014  * @column: the column of the model to search in, or -1 to disable searching
14015  *
14016  * Sets @column as the column where the interactive search code should
14017  * search in for the current model.
14018  *
14019  * If the search column is set, users can use the "start-interactive-search"
14020  * key binding to bring up search popup. The enable-search property controls
14021  * whether simply typing text will also start an interactive search.
14022  *
14023  * Note that @column refers to a column of the current model. The search
14024  * column is reset to -1 when the model is changed.
14025  */
14026 void
14027 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
14028                                  gint         column)
14029 {
14030   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14031   g_return_if_fail (column >= -1);
14032
14033   if (tree_view->priv->search_column == column)
14034     return;
14035
14036   tree_view->priv->search_column = column;
14037   g_object_notify (G_OBJECT (tree_view), "search-column");
14038 }
14039
14040 /**
14041  * gtk_tree_view_get_search_equal_func:
14042  * @tree_view: A #GtkTreeView
14043  *
14044  * Returns the compare function currently in use.
14045  *
14046  * Return value: the currently used compare function for the search code.
14047  */
14048
14049 GtkTreeViewSearchEqualFunc
14050 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
14051 {
14052   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14053
14054   return tree_view->priv->search_equal_func;
14055 }
14056
14057 /**
14058  * gtk_tree_view_set_search_equal_func:
14059  * @tree_view: A #GtkTreeView
14060  * @search_equal_func: the compare function to use during the search
14061  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
14062  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
14063  *
14064  * Sets the compare function for the interactive search capabilities; note
14065  * that somewhat like strcmp() returning 0 for equality
14066  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
14067  **/
14068 void
14069 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
14070                                      GtkTreeViewSearchEqualFunc  search_equal_func,
14071                                      gpointer                    search_user_data,
14072                                      GDestroyNotify              search_destroy)
14073 {
14074   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14075   g_return_if_fail (search_equal_func != NULL);
14076
14077   if (tree_view->priv->search_destroy)
14078     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
14079
14080   tree_view->priv->search_equal_func = search_equal_func;
14081   tree_view->priv->search_user_data = search_user_data;
14082   tree_view->priv->search_destroy = search_destroy;
14083   if (tree_view->priv->search_equal_func == NULL)
14084     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
14085 }
14086
14087 /**
14088  * gtk_tree_view_get_search_entry:
14089  * @tree_view: A #GtkTreeView
14090  *
14091  * Returns the #GtkEntry which is currently in use as interactive search
14092  * entry for @tree_view.  In case the built-in entry is being used, %NULL
14093  * will be returned.
14094  *
14095  * Return value: (transfer none): the entry currently in use as search entry.
14096  *
14097  * Since: 2.10
14098  */
14099 GtkEntry *
14100 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14101 {
14102   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14103
14104   if (tree_view->priv->search_custom_entry_set)
14105     return GTK_ENTRY (tree_view->priv->search_entry);
14106
14107   return NULL;
14108 }
14109
14110 /**
14111  * gtk_tree_view_set_search_entry:
14112  * @tree_view: A #GtkTreeView
14113  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14114  *
14115  * Sets the entry which the interactive search code will use for this
14116  * @tree_view.  This is useful when you want to provide a search entry
14117  * in our interface at all time at a fixed position.  Passing %NULL for
14118  * @entry will make the interactive search code use the built-in popup
14119  * entry again.
14120  *
14121  * Since: 2.10
14122  */
14123 void
14124 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14125                                 GtkEntry    *entry)
14126 {
14127   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14128   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14129
14130   if (tree_view->priv->search_custom_entry_set)
14131     {
14132       if (tree_view->priv->search_entry_changed_id)
14133         {
14134           g_signal_handler_disconnect (tree_view->priv->search_entry,
14135                                        tree_view->priv->search_entry_changed_id);
14136           tree_view->priv->search_entry_changed_id = 0;
14137         }
14138       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14139                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14140                                             tree_view);
14141
14142       g_object_unref (tree_view->priv->search_entry);
14143     }
14144   else if (tree_view->priv->search_window)
14145     {
14146       gtk_widget_destroy (tree_view->priv->search_window);
14147
14148       tree_view->priv->search_window = NULL;
14149     }
14150
14151   if (entry)
14152     {
14153       tree_view->priv->search_entry = g_object_ref (entry);
14154       tree_view->priv->search_custom_entry_set = TRUE;
14155
14156       if (tree_view->priv->search_entry_changed_id == 0)
14157         {
14158           tree_view->priv->search_entry_changed_id =
14159             g_signal_connect (tree_view->priv->search_entry, "changed",
14160                               G_CALLBACK (gtk_tree_view_search_init),
14161                               tree_view);
14162         }
14163
14164         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14165                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14166                           tree_view);
14167
14168         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14169     }
14170   else
14171     {
14172       tree_view->priv->search_entry = NULL;
14173       tree_view->priv->search_custom_entry_set = FALSE;
14174     }
14175 }
14176
14177 /**
14178  * gtk_tree_view_set_search_position_func:
14179  * @tree_view: A #GtkTreeView
14180  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14181  *    to use the default search position function
14182  * @data: (allow-none): user data to pass to @func, or %NULL
14183  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14184  *
14185  * Sets the function to use when positioning the search dialog.
14186  *
14187  * Since: 2.10
14188  **/
14189 void
14190 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14191                                         GtkTreeViewSearchPositionFunc  func,
14192                                         gpointer                       user_data,
14193                                         GDestroyNotify                 destroy)
14194 {
14195   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14196
14197   if (tree_view->priv->search_position_destroy)
14198     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14199
14200   tree_view->priv->search_position_func = func;
14201   tree_view->priv->search_position_user_data = user_data;
14202   tree_view->priv->search_position_destroy = destroy;
14203   if (tree_view->priv->search_position_func == NULL)
14204     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14205 }
14206
14207 /**
14208  * gtk_tree_view_get_search_position_func:
14209  * @tree_view: A #GtkTreeView
14210  *
14211  * Returns the positioning function currently in use.
14212  *
14213  * Return value: the currently used function for positioning the search dialog.
14214  *
14215  * Since: 2.10
14216  */
14217 GtkTreeViewSearchPositionFunc
14218 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14219 {
14220   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14221
14222   return tree_view->priv->search_position_func;
14223 }
14224
14225
14226 static void
14227 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14228                                   GtkTreeView *tree_view,
14229                                   GdkDevice   *device)
14230 {
14231   if (tree_view->priv->disable_popdown)
14232     return;
14233
14234   if (tree_view->priv->search_entry_changed_id)
14235     {
14236       g_signal_handler_disconnect (tree_view->priv->search_entry,
14237                                    tree_view->priv->search_entry_changed_id);
14238       tree_view->priv->search_entry_changed_id = 0;
14239     }
14240   if (tree_view->priv->typeselect_flush_timeout)
14241     {
14242       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14243       tree_view->priv->typeselect_flush_timeout = 0;
14244     }
14245
14246   if (gtk_widget_get_visible (search_dialog))
14247     {
14248       /* send focus-in event */
14249       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14250       gtk_widget_hide (search_dialog);
14251       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14252       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14253     }
14254 }
14255
14256 static void
14257 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14258                                     GtkWidget   *search_dialog,
14259                                     gpointer     user_data)
14260 {
14261   gint x, y;
14262   gint tree_x, tree_y;
14263   gint tree_width, tree_height;
14264   GdkWindow *tree_window = gtk_widget_get_window (GTK_WIDGET (tree_view));
14265   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14266   GtkRequisition requisition;
14267   gint monitor_num;
14268   GdkRectangle monitor;
14269
14270   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14271   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14272
14273   gtk_widget_realize (search_dialog);
14274
14275   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14276   gdk_drawable_get_size (tree_window,
14277                          &tree_width,
14278                          &tree_height);
14279   gtk_size_request_get_size (GTK_SIZE_REQUEST (search_dialog),
14280                              &requisition, NULL);
14281
14282   if (tree_x + tree_width > gdk_screen_get_width (screen))
14283     x = gdk_screen_get_width (screen) - requisition.width;
14284   else if (tree_x + tree_width - requisition.width < 0)
14285     x = 0;
14286   else
14287     x = tree_x + tree_width - requisition.width;
14288
14289   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14290     y = gdk_screen_get_height (screen) - requisition.height;
14291   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14292     y = 0;
14293   else
14294     y = tree_y + tree_height;
14295
14296   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14297 }
14298
14299 static void
14300 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14301                                       GtkMenu  *menu,
14302                                       gpointer  data)
14303 {
14304   GtkTreeView *tree_view = (GtkTreeView *)data;
14305
14306   tree_view->priv->disable_popdown = 1;
14307   g_signal_connect (menu, "hide",
14308                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14309 }
14310
14311 /* Because we're visible but offscreen, we just set a flag in the preedit
14312  * callback.
14313  */
14314 static void
14315 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14316                                       GtkTreeView  *tree_view)
14317 {
14318   tree_view->priv->imcontext_changed = 1;
14319   if (tree_view->priv->typeselect_flush_timeout)
14320     {
14321       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14322       tree_view->priv->typeselect_flush_timeout =
14323         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14324                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14325                        tree_view);
14326     }
14327
14328 }
14329
14330 static void
14331 gtk_tree_view_search_activate (GtkEntry    *entry,
14332                                GtkTreeView *tree_view)
14333 {
14334   GtkTreePath *path;
14335   GtkRBNode *node;
14336   GtkRBTree *tree;
14337
14338   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14339                                     tree_view,
14340                                     gtk_get_current_event_device ());
14341
14342   /* If we have a row selected and it's the cursor row, we activate
14343    * the row XXX */
14344   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14345     {
14346       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14347
14348       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14349
14350       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14351         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14352
14353       gtk_tree_path_free (path);
14354     }
14355 }
14356
14357 static gboolean
14358 gtk_tree_view_real_search_enable_popdown (gpointer data)
14359 {
14360   GtkTreeView *tree_view = (GtkTreeView *)data;
14361
14362   tree_view->priv->disable_popdown = 0;
14363
14364   return FALSE;
14365 }
14366
14367 static void
14368 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14369                                      gpointer   data)
14370 {
14371   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14372 }
14373
14374 static gboolean
14375 gtk_tree_view_search_delete_event (GtkWidget *widget,
14376                                    GdkEventAny *event,
14377                                    GtkTreeView *tree_view)
14378 {
14379   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14380
14381   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14382
14383   return TRUE;
14384 }
14385
14386 static gboolean
14387 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14388                                          GdkEventButton *event,
14389                                          GtkTreeView *tree_view)
14390 {
14391   GdkDevice *keyb_device;
14392
14393   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14394
14395   keyb_device = gdk_device_get_associated_device (event->device);
14396   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14397
14398   if (event->window == tree_view->priv->bin_window)
14399     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14400
14401   return TRUE;
14402 }
14403
14404 static gboolean
14405 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14406                                    GdkEventScroll *event,
14407                                    GtkTreeView *tree_view)
14408 {
14409   gboolean retval = FALSE;
14410
14411   if (event->direction == GDK_SCROLL_UP)
14412     {
14413       gtk_tree_view_search_move (widget, tree_view, TRUE);
14414       retval = TRUE;
14415     }
14416   else if (event->direction == GDK_SCROLL_DOWN)
14417     {
14418       gtk_tree_view_search_move (widget, tree_view, FALSE);
14419       retval = TRUE;
14420     }
14421
14422   /* renew the flush timeout */
14423   if (retval && tree_view->priv->typeselect_flush_timeout
14424       && !tree_view->priv->search_custom_entry_set)
14425     {
14426       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14427       tree_view->priv->typeselect_flush_timeout =
14428         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14429                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14430                        tree_view);
14431     }
14432
14433   return retval;
14434 }
14435
14436 static gboolean
14437 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14438                                       GdkEventKey *event,
14439                                       GtkTreeView *tree_view)
14440 {
14441   gboolean retval = FALSE;
14442
14443   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14444   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14445
14446   /* close window and cancel the search */
14447   if (!tree_view->priv->search_custom_entry_set
14448       && (event->keyval == GDK_KEY_Escape ||
14449           event->keyval == GDK_KEY_Tab ||
14450             event->keyval == GDK_KEY_KP_Tab ||
14451             event->keyval == GDK_KEY_ISO_Left_Tab))
14452     {
14453       gtk_tree_view_search_dialog_hide (widget, tree_view,
14454                                         gdk_event_get_device ((GdkEvent *) event));
14455       return TRUE;
14456     }
14457
14458   /* select previous matching iter */
14459   if (event->keyval == GDK_KEY_Up || event->keyval == GDK_KEY_KP_Up)
14460     {
14461       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14462         gtk_widget_error_bell (widget);
14463
14464       retval = TRUE;
14465     }
14466
14467   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14468       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14469     {
14470       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14471         gtk_widget_error_bell (widget);
14472
14473       retval = TRUE;
14474     }
14475
14476   /* select next matching iter */
14477   if (event->keyval == GDK_KEY_Down || event->keyval == GDK_KEY_KP_Down)
14478     {
14479       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14480         gtk_widget_error_bell (widget);
14481
14482       retval = TRUE;
14483     }
14484
14485   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14486       && (event->keyval == GDK_KEY_g || event->keyval == GDK_KEY_G))
14487     {
14488       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14489         gtk_widget_error_bell (widget);
14490
14491       retval = TRUE;
14492     }
14493
14494   /* renew the flush timeout */
14495   if (retval && tree_view->priv->typeselect_flush_timeout
14496       && !tree_view->priv->search_custom_entry_set)
14497     {
14498       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14499       tree_view->priv->typeselect_flush_timeout =
14500         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14501                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14502                        tree_view);
14503     }
14504
14505   return retval;
14506 }
14507
14508 /*  this function returns FALSE if there is a search string but
14509  *  nothing was found, and TRUE otherwise.
14510  */
14511 static gboolean
14512 gtk_tree_view_search_move (GtkWidget   *window,
14513                            GtkTreeView *tree_view,
14514                            gboolean     up)
14515 {
14516   gboolean ret;
14517   gint len;
14518   gint count = 0;
14519   const gchar *text;
14520   GtkTreeIter iter;
14521   GtkTreeModel *model;
14522   GtkTreeSelection *selection;
14523
14524   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14525
14526   g_return_val_if_fail (text != NULL, FALSE);
14527
14528   len = strlen (text);
14529
14530   if (up && tree_view->priv->selected_iter == 1)
14531     return strlen (text) < 1;
14532
14533   len = strlen (text);
14534
14535   if (len < 1)
14536     return TRUE;
14537
14538   model = gtk_tree_view_get_model (tree_view);
14539   selection = gtk_tree_view_get_selection (tree_view);
14540
14541   /* search */
14542   gtk_tree_selection_unselect_all (selection);
14543   if (!gtk_tree_model_get_iter_first (model, &iter))
14544     return TRUE;
14545
14546   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14547                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14548
14549   if (ret)
14550     {
14551       /* found */
14552       tree_view->priv->selected_iter += up?(-1):(1);
14553       return TRUE;
14554     }
14555   else
14556     {
14557       /* return to old iter */
14558       count = 0;
14559       gtk_tree_model_get_iter_first (model, &iter);
14560       gtk_tree_view_search_iter (model, selection,
14561                                  &iter, text,
14562                                  &count, tree_view->priv->selected_iter);
14563       return FALSE;
14564     }
14565 }
14566
14567 static gboolean
14568 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14569                                  gint          column,
14570                                  const gchar  *key,
14571                                  GtkTreeIter  *iter,
14572                                  gpointer      search_data)
14573 {
14574   gboolean retval = TRUE;
14575   const gchar *str;
14576   gchar *normalized_string;
14577   gchar *normalized_key;
14578   gchar *case_normalized_string = NULL;
14579   gchar *case_normalized_key = NULL;
14580   GValue value = {0,};
14581   GValue transformed = {0,};
14582
14583   gtk_tree_model_get_value (model, iter, column, &value);
14584
14585   g_value_init (&transformed, G_TYPE_STRING);
14586
14587   if (!g_value_transform (&value, &transformed))
14588     {
14589       g_value_unset (&value);
14590       return TRUE;
14591     }
14592
14593   g_value_unset (&value);
14594
14595   str = g_value_get_string (&transformed);
14596   if (!str)
14597     {
14598       g_value_unset (&transformed);
14599       return TRUE;
14600     }
14601
14602   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14603   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14604
14605   if (normalized_string && normalized_key)
14606     {
14607       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14608       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14609
14610       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14611         retval = FALSE;
14612     }
14613
14614   g_value_unset (&transformed);
14615   g_free (normalized_key);
14616   g_free (normalized_string);
14617   g_free (case_normalized_key);
14618   g_free (case_normalized_string);
14619
14620   return retval;
14621 }
14622
14623 static gboolean
14624 gtk_tree_view_search_iter (GtkTreeModel     *model,
14625                            GtkTreeSelection *selection,
14626                            GtkTreeIter      *iter,
14627                            const gchar      *text,
14628                            gint             *count,
14629                            gint              n)
14630 {
14631   GtkRBTree *tree = NULL;
14632   GtkRBNode *node = NULL;
14633   GtkTreePath *path;
14634
14635   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14636
14637   path = gtk_tree_model_get_path (model, iter);
14638   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14639
14640   do
14641     {
14642       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14643         {
14644           (*count)++;
14645           if (*count == n)
14646             {
14647               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14648                                             TRUE, 0.5, 0.0);
14649               gtk_tree_selection_select_iter (selection, iter);
14650               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14651
14652               if (path)
14653                 gtk_tree_path_free (path);
14654
14655               return TRUE;
14656             }
14657         }
14658
14659       if (node->children)
14660         {
14661           gboolean has_child;
14662           GtkTreeIter tmp;
14663
14664           tree = node->children;
14665           node = tree->root;
14666
14667           while (node->left != tree->nil)
14668             node = node->left;
14669
14670           tmp = *iter;
14671           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14672           gtk_tree_path_down (path);
14673
14674           /* sanity check */
14675           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14676         }
14677       else
14678         {
14679           gboolean done = FALSE;
14680
14681           do
14682             {
14683               node = _gtk_rbtree_next (tree, node);
14684
14685               if (node)
14686                 {
14687                   gboolean has_next;
14688
14689                   has_next = gtk_tree_model_iter_next (model, iter);
14690
14691                   done = TRUE;
14692                   gtk_tree_path_next (path);
14693
14694                   /* sanity check */
14695                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14696                 }
14697               else
14698                 {
14699                   gboolean has_parent;
14700                   GtkTreeIter tmp_iter = *iter;
14701
14702                   node = tree->parent_node;
14703                   tree = tree->parent_tree;
14704
14705                   if (!tree)
14706                     {
14707                       if (path)
14708                         gtk_tree_path_free (path);
14709
14710                       /* we've run out of tree, done with this func */
14711                       return FALSE;
14712                     }
14713
14714                   has_parent = gtk_tree_model_iter_parent (model,
14715                                                            iter,
14716                                                            &tmp_iter);
14717                   gtk_tree_path_up (path);
14718
14719                   /* sanity check */
14720                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14721                 }
14722             }
14723           while (!done);
14724         }
14725     }
14726   while (1);
14727
14728   return FALSE;
14729 }
14730
14731 static void
14732 gtk_tree_view_search_init (GtkWidget   *entry,
14733                            GtkTreeView *tree_view)
14734 {
14735   gint ret;
14736   gint count = 0;
14737   const gchar *text;
14738   GtkTreeIter iter;
14739   GtkTreeModel *model;
14740   GtkTreeSelection *selection;
14741
14742   g_return_if_fail (GTK_IS_ENTRY (entry));
14743   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14744
14745   text = gtk_entry_get_text (GTK_ENTRY (entry));
14746
14747   model = gtk_tree_view_get_model (tree_view);
14748   selection = gtk_tree_view_get_selection (tree_view);
14749
14750   /* search */
14751   gtk_tree_selection_unselect_all (selection);
14752   if (tree_view->priv->typeselect_flush_timeout
14753       && !tree_view->priv->search_custom_entry_set)
14754     {
14755       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14756       tree_view->priv->typeselect_flush_timeout =
14757         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14758                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14759                        tree_view);
14760     }
14761
14762   if (*text == '\0')
14763     return;
14764
14765   if (!gtk_tree_model_get_iter_first (model, &iter))
14766     return;
14767
14768   ret = gtk_tree_view_search_iter (model, selection,
14769                                    &iter, text,
14770                                    &count, 1);
14771
14772   if (ret)
14773     tree_view->priv->selected_iter = 1;
14774 }
14775
14776 static void
14777 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14778                              GtkTreeView     *tree_view)
14779 {
14780   if (tree_view->priv->edited_column == NULL)
14781     return;
14782
14783   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14784   tree_view->priv->edited_column = NULL;
14785
14786   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14787     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14788
14789   g_signal_handlers_disconnect_by_func (cell_editable,
14790                                         gtk_tree_view_remove_widget,
14791                                         tree_view);
14792
14793   gtk_container_remove (GTK_CONTAINER (tree_view),
14794                         GTK_WIDGET (cell_editable));
14795
14796   /* FIXME should only redraw a single node */
14797   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14798 }
14799
14800 static gboolean
14801 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14802                              GtkTreePath *cursor_path)
14803 {
14804   GtkTreeIter iter;
14805   GdkRectangle background_area;
14806   GdkRectangle cell_area;
14807   GtkCellEditable *editable_widget = NULL;
14808   gchar *path_string;
14809   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14810   gint retval = FALSE;
14811   GtkRBTree *cursor_tree;
14812   GtkRBNode *cursor_node;
14813
14814   g_assert (tree_view->priv->focus_column);
14815
14816   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14817     return FALSE;
14818
14819   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14820       cursor_node == NULL)
14821     return FALSE;
14822
14823   path_string = gtk_tree_path_to_string (cursor_path);
14824   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14825
14826   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14827
14828   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14829                                            tree_view->priv->model,
14830                                            &iter,
14831                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14832                                            cursor_node->children?TRUE:FALSE);
14833   gtk_tree_view_get_background_area (tree_view,
14834                                      cursor_path,
14835                                      tree_view->priv->focus_column,
14836                                      &background_area);
14837   gtk_tree_view_get_cell_area (tree_view,
14838                                cursor_path,
14839                                tree_view->priv->focus_column,
14840                                &cell_area);
14841
14842   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14843                                         &editable_widget,
14844                                         NULL,
14845                                         path_string,
14846                                         &background_area,
14847                                         &cell_area,
14848                                         flags))
14849     {
14850       retval = TRUE;
14851       if (editable_widget != NULL)
14852         {
14853           gint left, right;
14854           GdkRectangle area;
14855           GtkCellRenderer *cell;
14856
14857           area = cell_area;
14858           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14859
14860           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14861
14862           area.x += left;
14863           area.width -= right + left;
14864
14865           gtk_tree_view_real_start_editing (tree_view,
14866                                             tree_view->priv->focus_column,
14867                                             cursor_path,
14868                                             editable_widget,
14869                                             &area,
14870                                             NULL,
14871                                             flags);
14872         }
14873
14874     }
14875   g_free (path_string);
14876   return retval;
14877 }
14878
14879 static void
14880 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14881                                   GtkTreeViewColumn *column,
14882                                   GtkTreePath       *path,
14883                                   GtkCellEditable   *cell_editable,
14884                                   GdkRectangle      *cell_area,
14885                                   GdkEvent          *event,
14886                                   guint              flags)
14887 {
14888   gint pre_val = tree_view->priv->vadjustment->value;
14889   GtkRequisition requisition;
14890
14891   tree_view->priv->edited_column = column;
14892   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14893
14894   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14895   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14896
14897   gtk_size_request_get_size (GTK_SIZE_REQUEST (cell_editable),
14898                              &requisition, NULL);
14899
14900   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14901
14902   if (requisition.height < cell_area->height)
14903     {
14904       gint diff = cell_area->height - requisition.height;
14905       gtk_tree_view_put (tree_view,
14906                          GTK_WIDGET (cell_editable),
14907                          cell_area->x, cell_area->y + diff/2,
14908                          cell_area->width, requisition.height);
14909     }
14910   else
14911     {
14912       gtk_tree_view_put (tree_view,
14913                          GTK_WIDGET (cell_editable),
14914                          cell_area->x, cell_area->y,
14915                          cell_area->width, cell_area->height);
14916     }
14917
14918   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14919                                    (GdkEvent *)event);
14920
14921   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14922   g_signal_connect (cell_editable, "remove-widget",
14923                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14924 }
14925
14926 static void
14927 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14928                             gboolean     cancel_editing)
14929 {
14930   GtkTreeViewColumn *column;
14931   GtkCellRenderer *cell;
14932
14933   if (tree_view->priv->edited_column == NULL)
14934     return;
14935
14936   /*
14937    * This is very evil. We need to do this, because
14938    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14939    * later on. If gtk_tree_view_row_changed notices
14940    * tree_view->priv->edited_column != NULL, it'll call
14941    * gtk_tree_view_stop_editing again. Bad things will happen then.
14942    *
14943    * Please read that again if you intend to modify anything here.
14944    */
14945
14946   column = tree_view->priv->edited_column;
14947   tree_view->priv->edited_column = NULL;
14948
14949   cell = _gtk_tree_view_column_get_edited_cell (column);
14950   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14951
14952   if (!cancel_editing)
14953     gtk_cell_editable_editing_done (column->editable_widget);
14954
14955   tree_view->priv->edited_column = column;
14956
14957   gtk_cell_editable_remove_widget (column->editable_widget);
14958 }
14959
14960
14961 /**
14962  * gtk_tree_view_set_hover_selection:
14963  * @tree_view: a #GtkTreeView
14964  * @hover: %TRUE to enable hover selection mode
14965  *
14966  * Enables of disables the hover selection mode of @tree_view.
14967  * Hover selection makes the selected row follow the pointer.
14968  * Currently, this works only for the selection modes
14969  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14970  *
14971  * Since: 2.6
14972  **/
14973 void
14974 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14975                                    gboolean     hover)
14976 {
14977   hover = hover != FALSE;
14978
14979   if (hover != tree_view->priv->hover_selection)
14980     {
14981       tree_view->priv->hover_selection = hover;
14982
14983       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14984     }
14985 }
14986
14987 /**
14988  * gtk_tree_view_get_hover_selection:
14989  * @tree_view: a #GtkTreeView
14990  *
14991  * Returns whether hover selection mode is turned on for @tree_view.
14992  *
14993  * Return value: %TRUE if @tree_view is in hover selection mode
14994  *
14995  * Since: 2.6
14996  **/
14997 gboolean
14998 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14999 {
15000   return tree_view->priv->hover_selection;
15001 }
15002
15003 /**
15004  * gtk_tree_view_set_hover_expand:
15005  * @tree_view: a #GtkTreeView
15006  * @expand: %TRUE to enable hover selection mode
15007  *
15008  * Enables of disables the hover expansion mode of @tree_view.
15009  * Hover expansion makes rows expand or collapse if the pointer
15010  * moves over them.
15011  *
15012  * Since: 2.6
15013  **/
15014 void
15015 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
15016                                 gboolean     expand)
15017 {
15018   expand = expand != FALSE;
15019
15020   if (expand != tree_view->priv->hover_expand)
15021     {
15022       tree_view->priv->hover_expand = expand;
15023
15024       g_object_notify (G_OBJECT (tree_view), "hover-expand");
15025     }
15026 }
15027
15028 /**
15029  * gtk_tree_view_get_hover_expand:
15030  * @tree_view: a #GtkTreeView
15031  *
15032  * Returns whether hover expansion mode is turned on for @tree_view.
15033  *
15034  * Return value: %TRUE if @tree_view is in hover expansion mode
15035  *
15036  * Since: 2.6
15037  **/
15038 gboolean
15039 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
15040 {
15041   return tree_view->priv->hover_expand;
15042 }
15043
15044 /**
15045  * gtk_tree_view_set_rubber_banding:
15046  * @tree_view: a #GtkTreeView
15047  * @enable: %TRUE to enable rubber banding
15048  *
15049  * Enables or disables rubber banding in @tree_view.  If the selection mode
15050  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
15051  * multiple rows by dragging the mouse.
15052  *
15053  * Since: 2.10
15054  **/
15055 void
15056 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
15057                                   gboolean     enable)
15058 {
15059   enable = enable != FALSE;
15060
15061   if (enable != tree_view->priv->rubber_banding_enable)
15062     {
15063       tree_view->priv->rubber_banding_enable = enable;
15064
15065       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
15066     }
15067 }
15068
15069 /**
15070  * gtk_tree_view_get_rubber_banding:
15071  * @tree_view: a #GtkTreeView
15072  *
15073  * Returns whether rubber banding is turned on for @tree_view.  If the
15074  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
15075  * user to select multiple rows by dragging the mouse.
15076  *
15077  * Return value: %TRUE if rubber banding in @tree_view is enabled.
15078  *
15079  * Since: 2.10
15080  **/
15081 gboolean
15082 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
15083 {
15084   return tree_view->priv->rubber_banding_enable;
15085 }
15086
15087 /**
15088  * gtk_tree_view_is_rubber_banding_active:
15089  * @tree_view: a #GtkTreeView
15090  *
15091  * Returns whether a rubber banding operation is currently being done
15092  * in @tree_view.
15093  *
15094  * Return value: %TRUE if a rubber banding operation is currently being
15095  * done in @tree_view.
15096  *
15097  * Since: 2.12
15098  **/
15099 gboolean
15100 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15101 {
15102   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15103
15104   if (tree_view->priv->rubber_banding_enable
15105       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15106     return TRUE;
15107
15108   return FALSE;
15109 }
15110
15111 /**
15112  * gtk_tree_view_get_row_separator_func:
15113  * @tree_view: a #GtkTreeView
15114  *
15115  * Returns the current row separator function.
15116  *
15117  * Return value: the current row separator function.
15118  *
15119  * Since: 2.6
15120  **/
15121 GtkTreeViewRowSeparatorFunc
15122 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15123 {
15124   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15125
15126   return tree_view->priv->row_separator_func;
15127 }
15128
15129 /**
15130  * gtk_tree_view_set_row_separator_func:
15131  * @tree_view: a #GtkTreeView
15132  * @func: (allow-none): a #GtkTreeViewRowSeparatorFunc
15133  * @data: (allow-none): user data to pass to @func, or %NULL
15134  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15135  *
15136  * Sets the row separator function, which is used to determine
15137  * whether a row should be drawn as a separator. If the row separator
15138  * function is %NULL, no separators are drawn. This is the default value.
15139  *
15140  * Since: 2.6
15141  **/
15142 void
15143 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15144                                       GtkTreeViewRowSeparatorFunc  func,
15145                                       gpointer                     data,
15146                                       GDestroyNotify               destroy)
15147 {
15148   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15149
15150   if (tree_view->priv->row_separator_destroy)
15151     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15152
15153   tree_view->priv->row_separator_func = func;
15154   tree_view->priv->row_separator_data = data;
15155   tree_view->priv->row_separator_destroy = destroy;
15156
15157   /* Have the tree recalculate heights */
15158   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15159   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15160 }
15161
15162
15163 static void
15164 gtk_tree_view_grab_notify (GtkWidget *widget,
15165                            gboolean   was_grabbed)
15166 {
15167   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15168
15169   tree_view->priv->in_grab = !was_grabbed;
15170
15171   if (!was_grabbed)
15172     {
15173       tree_view->priv->pressed_button = -1;
15174
15175       if (tree_view->priv->rubber_band_status)
15176         gtk_tree_view_stop_rubber_band (tree_view);
15177     }
15178 }
15179
15180 static void
15181 gtk_tree_view_state_changed (GtkWidget      *widget,
15182                              GtkStateType    previous_state)
15183 {
15184   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15185
15186   if (gtk_widget_get_realized (widget))
15187     {
15188       gdk_window_set_background (tree_view->priv->bin_window,
15189                                  &gtk_widget_get_style (widget)->base[gtk_widget_get_state (widget)]);
15190     }
15191
15192   gtk_widget_queue_draw (widget);
15193 }
15194
15195 /**
15196  * gtk_tree_view_get_grid_lines:
15197  * @tree_view: a #GtkTreeView
15198  *
15199  * Returns which grid lines are enabled in @tree_view.
15200  *
15201  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15202  * are enabled.
15203  *
15204  * Since: 2.10
15205  */
15206 GtkTreeViewGridLines
15207 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15208 {
15209   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15210
15211   return tree_view->priv->grid_lines;
15212 }
15213
15214 /**
15215  * gtk_tree_view_set_grid_lines:
15216  * @tree_view: a #GtkTreeView
15217  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15218  * enable.
15219  *
15220  * Sets which grid lines to draw in @tree_view.
15221  *
15222  * Since: 2.10
15223  */
15224 void
15225 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15226                               GtkTreeViewGridLines   grid_lines)
15227 {
15228   GtkTreeViewPrivate *priv;
15229   GtkWidget *widget;
15230   GtkTreeViewGridLines old_grid_lines;
15231
15232   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15233
15234   priv = tree_view->priv;
15235   widget = GTK_WIDGET (tree_view);
15236
15237   old_grid_lines = priv->grid_lines;
15238   priv->grid_lines = grid_lines;
15239
15240   if (gtk_widget_get_realized (widget))
15241     {
15242       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15243           priv->grid_line_width)
15244         {
15245           priv->grid_line_width = 0;
15246         }
15247
15248       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15249           !priv->grid_line_width)
15250         {
15251           gint8 *dash_list;
15252
15253           gtk_widget_style_get (widget,
15254                                 "grid-line-width", &priv->grid_line_width,
15255                                 "grid-line-pattern", (gchar *)&dash_list,
15256                                 NULL);
15257
15258           if (dash_list)
15259             {
15260               priv->grid_line_dashes[0] = dash_list[0];
15261               if (dash_list[0])
15262                 priv->grid_line_dashes[1] = dash_list[1];
15263
15264               g_free (dash_list);
15265             }
15266           else
15267             {
15268               priv->grid_line_dashes[0] = 1;
15269               priv->grid_line_dashes[1] = 1;
15270             }
15271         }
15272     }
15273
15274   if (old_grid_lines != grid_lines)
15275     {
15276       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15277
15278       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15279     }
15280 }
15281
15282 /**
15283  * gtk_tree_view_get_enable_tree_lines:
15284  * @tree_view: a #GtkTreeView.
15285  *
15286  * Returns whether or not tree lines are drawn in @tree_view.
15287  *
15288  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15289  * otherwise.
15290  *
15291  * Since: 2.10
15292  */
15293 gboolean
15294 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15295 {
15296   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15297
15298   return tree_view->priv->tree_lines_enabled;
15299 }
15300
15301 /**
15302  * gtk_tree_view_set_enable_tree_lines:
15303  * @tree_view: a #GtkTreeView
15304  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15305  *
15306  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15307  * This does not have any visible effects for lists.
15308  *
15309  * Since: 2.10
15310  */
15311 void
15312 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15313                                      gboolean     enabled)
15314 {
15315   GtkTreeViewPrivate *priv;
15316   GtkWidget *widget;
15317   gboolean was_enabled;
15318
15319   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15320
15321   enabled = enabled != FALSE;
15322
15323   priv = tree_view->priv;
15324   widget = GTK_WIDGET (tree_view);
15325
15326   was_enabled = priv->tree_lines_enabled;
15327
15328   priv->tree_lines_enabled = enabled;
15329
15330   if (gtk_widget_get_realized (widget))
15331     {
15332       if (!enabled && priv->tree_line_width)
15333         {
15334           priv->tree_line_width = 0;
15335         }
15336
15337       if (enabled && !priv->tree_line_width)
15338         {
15339           gint8 *dash_list;
15340           gtk_widget_style_get (widget,
15341                                 "tree-line-width", &priv->tree_line_width,
15342                                 "tree-line-pattern", (gchar *)&dash_list,
15343                                 NULL);
15344
15345           if (dash_list)
15346             {
15347               priv->tree_line_dashes[0] = dash_list[0];
15348               if (dash_list[0])
15349                 priv->tree_line_dashes[1] = dash_list[1];
15350
15351               g_free (dash_list);
15352             }
15353           else
15354             {
15355               priv->tree_line_dashes[0] = 1;
15356               priv->tree_line_dashes[1] = 1;
15357             }
15358         }
15359     }
15360
15361   if (was_enabled != enabled)
15362     {
15363       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15364
15365       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15366     }
15367 }
15368
15369
15370 /**
15371  * gtk_tree_view_set_show_expanders:
15372  * @tree_view: a #GtkTreeView
15373  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15374  *
15375  * Sets whether to draw and enable expanders and indent child rows in
15376  * @tree_view.  When disabled there will be no expanders visible in trees
15377  * and there will be no way to expand and collapse rows by default.  Also
15378  * note that hiding the expanders will disable the default indentation.  You
15379  * can set a custom indentation in this case using
15380  * gtk_tree_view_set_level_indentation().
15381  * This does not have any visible effects for lists.
15382  *
15383  * Since: 2.12
15384  */
15385 void
15386 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15387                                   gboolean     enabled)
15388 {
15389   gboolean was_enabled;
15390
15391   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15392
15393   enabled = enabled != FALSE;
15394   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15395
15396   if (enabled)
15397     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15398   else
15399     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15400
15401   if (enabled != was_enabled)
15402     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15403 }
15404
15405 /**
15406  * gtk_tree_view_get_show_expanders:
15407  * @tree_view: a #GtkTreeView.
15408  *
15409  * Returns whether or not expanders are drawn in @tree_view.
15410  *
15411  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15412  * otherwise.
15413  *
15414  * Since: 2.12
15415  */
15416 gboolean
15417 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15418 {
15419   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15420
15421   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15422 }
15423
15424 /**
15425  * gtk_tree_view_set_level_indentation:
15426  * @tree_view: a #GtkTreeView
15427  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15428  *
15429  * Sets the amount of extra indentation for child levels to use in @tree_view
15430  * in addition to the default indentation.  The value should be specified in
15431  * pixels, a value of 0 disables this feature and in this case only the default
15432  * indentation will be used.
15433  * This does not have any visible effects for lists.
15434  *
15435  * Since: 2.12
15436  */
15437 void
15438 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15439                                      gint         indentation)
15440 {
15441   tree_view->priv->level_indentation = indentation;
15442
15443   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15444 }
15445
15446 /**
15447  * gtk_tree_view_get_level_indentation:
15448  * @tree_view: a #GtkTreeView.
15449  *
15450  * Returns the amount, in pixels, of extra indentation for child levels
15451  * in @tree_view.
15452  *
15453  * Return value: the amount of extra indentation for child levels in
15454  * @tree_view.  A return value of 0 means that this feature is disabled.
15455  *
15456  * Since: 2.12
15457  */
15458 gint
15459 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15460 {
15461   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15462
15463   return tree_view->priv->level_indentation;
15464 }
15465
15466 /**
15467  * gtk_tree_view_set_tooltip_row:
15468  * @tree_view: a #GtkTreeView
15469  * @tooltip: a #GtkTooltip
15470  * @path: a #GtkTreePath
15471  *
15472  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15473  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15474  * See also gtk_tooltip_set_tip_area().
15475  *
15476  * Since: 2.12
15477  */
15478 void
15479 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15480                                GtkTooltip  *tooltip,
15481                                GtkTreePath *path)
15482 {
15483   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15484   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15485
15486   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15487 }
15488
15489 /**
15490  * gtk_tree_view_set_tooltip_cell:
15491  * @tree_view: a #GtkTreeView
15492  * @tooltip: a #GtkTooltip
15493  * @path: (allow-none): a #GtkTreePath or %NULL
15494  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15495  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15496  *
15497  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15498  * in common.  For example if @path is %NULL and @column is set, the tip
15499  * area will be set to the full area covered by @column.  See also
15500  * gtk_tooltip_set_tip_area().
15501  *
15502  * Note that if @path is not specified and @cell is set and part of a column
15503  * containing the expander, the tooltip might not show and hide at the correct
15504  * position.  In such cases @path must be set to the current node under the
15505  * mouse cursor for this function to operate correctly.
15506  *
15507  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15508  *
15509  * Since: 2.12
15510  */
15511 void
15512 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15513                                 GtkTooltip        *tooltip,
15514                                 GtkTreePath       *path,
15515                                 GtkTreeViewColumn *column,
15516                                 GtkCellRenderer   *cell)
15517 {
15518   GtkAllocation allocation;
15519   GdkRectangle rect;
15520
15521   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15522   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15523   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15524   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15525
15526   /* Determine x values. */
15527   if (column && cell)
15528     {
15529       GdkRectangle tmp;
15530       gint start, width;
15531
15532       /* We always pass in path here, whether it is NULL or not.
15533        * For cells in expander columns path must be specified so that
15534        * we can correctly account for the indentation.  This also means
15535        * that the tooltip is constrained vertically by the "Determine y
15536        * values" code below; this is not a real problem since cells actually
15537        * don't stretch vertically in constrast to columns.
15538        */
15539       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15540       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15541
15542       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15543                                                          tmp.x + start, 0,
15544                                                          &rect.x, NULL);
15545       rect.width = width;
15546     }
15547   else if (column)
15548     {
15549       GdkRectangle tmp;
15550
15551       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15552       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15553                                                          tmp.x, 0,
15554                                                          &rect.x, NULL);
15555       rect.width = tmp.width;
15556     }
15557   else
15558     {
15559       gtk_widget_get_allocation (GTK_WIDGET (tree_view), &allocation);
15560       rect.x = 0;
15561       rect.width = allocation.width;
15562     }
15563
15564   /* Determine y values. */
15565   if (path)
15566     {
15567       GdkRectangle tmp;
15568
15569       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15570       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15571                                                          0, tmp.y,
15572                                                          NULL, &rect.y);
15573       rect.height = tmp.height;
15574     }
15575   else
15576     {
15577       rect.y = 0;
15578       rect.height = tree_view->priv->vadjustment->page_size;
15579     }
15580
15581   gtk_tooltip_set_tip_area (tooltip, &rect);
15582 }
15583
15584 /**
15585  * gtk_tree_view_get_tooltip_context:
15586  * @tree_view: a #GtkTreeView
15587  * @x: the x coordinate (relative to widget coordinates)
15588  * @y: the y coordinate (relative to widget coordinates)
15589  * @keyboard_tip: whether this is a keyboard tooltip or not
15590  * @model: (out) (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15591  * @path: (out) (allow-none): a pointer to receive a #GtkTreePath or %NULL
15592  * @iter: (out) (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15593  *
15594  * This function is supposed to be used in a #GtkWidget::query-tooltip
15595  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15596  * which are received in the signal handler, should be passed to this
15597  * function without modification.
15598  *
15599  * The return value indicates whether there is a tree view row at the given
15600  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15601  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15602  * @model, @path and @iter which have been provided will be set to point to
15603  * that row and the corresponding model.  @x and @y will always be converted
15604  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15605  *
15606  * Return value: whether or not the given tooltip context points to a row.
15607  *
15608  * Since: 2.12
15609  */
15610 gboolean
15611 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15612                                    gint          *x,
15613                                    gint          *y,
15614                                    gboolean       keyboard_tip,
15615                                    GtkTreeModel **model,
15616                                    GtkTreePath  **path,
15617                                    GtkTreeIter   *iter)
15618 {
15619   GtkTreePath *tmppath = NULL;
15620
15621   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15622   g_return_val_if_fail (x != NULL, FALSE);
15623   g_return_val_if_fail (y != NULL, FALSE);
15624
15625   if (keyboard_tip)
15626     {
15627       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15628
15629       if (!tmppath)
15630         return FALSE;
15631     }
15632   else
15633     {
15634       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15635                                                          x, y);
15636
15637       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15638                                           &tmppath, NULL, NULL, NULL))
15639         return FALSE;
15640     }
15641
15642   if (model)
15643     *model = gtk_tree_view_get_model (tree_view);
15644
15645   if (iter)
15646     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15647                              iter, tmppath);
15648
15649   if (path)
15650     *path = tmppath;
15651   else
15652     gtk_tree_path_free (tmppath);
15653
15654   return TRUE;
15655 }
15656
15657 static gboolean
15658 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15659                                     gint        x,
15660                                     gint        y,
15661                                     gboolean    keyboard_tip,
15662                                     GtkTooltip *tooltip,
15663                                     gpointer    data)
15664 {
15665   GValue value = { 0, };
15666   GValue transformed = { 0, };
15667   GtkTreeIter iter;
15668   GtkTreePath *path;
15669   GtkTreeModel *model;
15670   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15671
15672   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15673                                           &x, &y,
15674                                           keyboard_tip,
15675                                           &model, &path, &iter))
15676     return FALSE;
15677
15678   gtk_tree_model_get_value (model, &iter,
15679                             tree_view->priv->tooltip_column, &value);
15680
15681   g_value_init (&transformed, G_TYPE_STRING);
15682
15683   if (!g_value_transform (&value, &transformed))
15684     {
15685       g_value_unset (&value);
15686       gtk_tree_path_free (path);
15687
15688       return FALSE;
15689     }
15690
15691   g_value_unset (&value);
15692
15693   if (!g_value_get_string (&transformed))
15694     {
15695       g_value_unset (&transformed);
15696       gtk_tree_path_free (path);
15697
15698       return FALSE;
15699     }
15700
15701   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15702   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15703
15704   gtk_tree_path_free (path);
15705   g_value_unset (&transformed);
15706
15707   return TRUE;
15708 }
15709
15710 /**
15711  * gtk_tree_view_set_tooltip_column:
15712  * @tree_view: a #GtkTreeView
15713  * @column: an integer, which is a valid column number for @tree_view's model
15714  *
15715  * If you only plan to have simple (text-only) tooltips on full rows, you
15716  * can use this function to have #GtkTreeView handle these automatically
15717  * for you. @column should be set to the column in @tree_view's model
15718  * containing the tooltip texts, or -1 to disable this feature.
15719  *
15720  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15721  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15722  *
15723  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15724  * so &amp;, &lt;, etc have to be escaped in the text.
15725  *
15726  * Since: 2.12
15727  */
15728 void
15729 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15730                                   gint         column)
15731 {
15732   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15733
15734   if (column == tree_view->priv->tooltip_column)
15735     return;
15736
15737   if (column == -1)
15738     {
15739       g_signal_handlers_disconnect_by_func (tree_view,
15740                                             gtk_tree_view_set_tooltip_query_cb,
15741                                             NULL);
15742       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15743     }
15744   else
15745     {
15746       if (tree_view->priv->tooltip_column == -1)
15747         {
15748           g_signal_connect (tree_view, "query-tooltip",
15749                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15750           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15751         }
15752     }
15753
15754   tree_view->priv->tooltip_column = column;
15755   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15756 }
15757
15758 /**
15759  * gtk_tree_view_get_tooltip_column:
15760  * @tree_view: a #GtkTreeView
15761  *
15762  * Returns the column of @tree_view's model which is being used for
15763  * displaying tooltips on @tree_view's rows.
15764  *
15765  * Return value: the index of the tooltip column that is currently being
15766  * used, or -1 if this is disabled.
15767  *
15768  * Since: 2.12
15769  */
15770 gint
15771 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15772 {
15773   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15774
15775   return tree_view->priv->tooltip_column;
15776 }