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 "gtkprivate.h"
  47 #include "gtkalias.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 of 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 of 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_boolean ("row-ending-details",
 837                                                                  P_("Row Ending details"),
 838                                                                  P_("Enable extended row background theming"),
 839                                                                  FALSE,
 840                                                                  GTK_PARAM_READABLE));
 841
 842   gtk_widget_class_install_style_property (widget_class,
 843                                            g_param_spec_int ("grid-line-width",
 844                                                              P_("Grid line width"),
 845                                                              P_("Width, in pixels, of the tree view grid lines"),
 846                                                              0, G_MAXINT, 1,
 847                                                              GTK_PARAM_READABLE));
 848
 849   gtk_widget_class_install_style_property (widget_class,
 850                                            g_param_spec_int ("tree-line-width",
 851                                                              P_("Tree line width"),
 852                                                              P_("Width, in pixels, of the tree view lines"),
 853                                                              0, G_MAXINT, 1,
 854                                                              GTK_PARAM_READABLE));
 855
 856   gtk_widget_class_install_style_property (widget_class,
 857                                            g_param_spec_string ("grid-line-pattern",
 858                                                                 P_("Grid line pattern"),
 859                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 860                                                                 "\1\1",
 861                                                                 GTK_PARAM_READABLE));
 862
 863   gtk_widget_class_install_style_property (widget_class,
 864                                            g_param_spec_string ("tree-line-pattern",
 865                                                                 P_("Tree line pattern"),
 866                                                                 P_("Dash pattern used to draw the tree view lines"),
 867                                                                 "\1\1",
 868                                                                 GTK_PARAM_READABLE));
 869
 870   /* Signals */
 871   /**
 872    * GtkTreeView::set-scroll-adjustments
 873    * @horizontal: the horizontal #GtkAdjustment
 874    * @vertical: the vertical #GtkAdjustment
 875    *
 876    * Set the scroll adjustments for the tree view. Usually scrolled containers
 877    * like #GtkScrolledWindow will emit this signal to connect two instances
 878    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 879    */
 880   widget_class->set_scroll_adjustments_signal =
 881     g_signal_new (I_("set-scroll-adjustments"),
 882                   G_TYPE_FROM_CLASS (o_class),
 883                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 884                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 885                   NULL, NULL,
 886                   _gtk_marshal_VOID__OBJECT_OBJECT,
 887                   G_TYPE_NONE, 2,
 888                   GTK_TYPE_ADJUSTMENT,
 889                   GTK_TYPE_ADJUSTMENT);
 890
 891   /**
 892    * GtkTreeView::row-activated:
 893    * @tree_view: the object on which the signal is emitted
 894    * @path: the #GtkTreePath for the activated row
 895    * @column: the #GtkTreeViewColumn in which the activation occurred
 896    *
 897    * The "row-activated" signal is emitted when the method
 898    * gtk_tree_view_row_activated() is called or the user double clicks
 899    * a treeview row. It is also emitted when a non-editable row is
 900    * selected and one of the keys: Space, Shift+Space, Return or
 901    * Enter is pressed.
 902    *
 903    * For selection handling refer to the <link linkend="TreeWidget">tree
 904    * widget conceptual overview</link> as well as #GtkTreeSelection.
 905    */
 906   tree_view_signals[ROW_ACTIVATED] =
 907     g_signal_new (I_("row-activated"),
 908                   G_TYPE_FROM_CLASS (o_class),
 909                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 910                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 911                   NULL, NULL,
 912                   _gtk_marshal_VOID__BOXED_OBJECT,
 913                   G_TYPE_NONE, 2,
 914                   GTK_TYPE_TREE_PATH,
 915                   GTK_TYPE_TREE_VIEW_COLUMN);
 916
 917   /**
 918    * GtkTreeView::test-expand-row:
 919    * @tree_view: the object on which the signal is emitted
 920    * @iter: the tree iter of the row to expand
 921    * @path: a tree path that points to the row
 922    *
 923    * The given row is about to be expanded (show its children nodes). Use this
 924    * signal if you need to control the expandability of individual rows.
 925    *
 926    * Returns: %FALSE to allow expansion, %TRUE to reject
 927    */
 928   tree_view_signals[TEST_EXPAND_ROW] =
 929     g_signal_new (I_("test-expand-row"),
 930                   G_TYPE_FROM_CLASS (o_class),
 931                   G_SIGNAL_RUN_LAST,
 932                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 933                   _gtk_boolean_handled_accumulator, NULL,
 934                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 935                   G_TYPE_BOOLEAN, 2,
 936                   GTK_TYPE_TREE_ITER,
 937                   GTK_TYPE_TREE_PATH);
 938
 939   /**
 940    * GtkTreeView::test-collapse-row:
 941    * @tree_view: the object on which the signal is emitted
 942    * @iter: the tree iter of the row to collapse
 943    * @path: a tree path that points to the row
 944    *
 945    * The given row is about to be collapsed (hide its children nodes). Use this
 946    * signal if you need to control the collapsibility of individual rows.
 947    *
 948    * Returns: %FALSE to allow collapsing, %TRUE to reject
 949    */
 950   tree_view_signals[TEST_COLLAPSE_ROW] =
 951     g_signal_new (I_("test-collapse-row"),
 952                   G_TYPE_FROM_CLASS (o_class),
 953                   G_SIGNAL_RUN_LAST,
 954                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 955                   _gtk_boolean_handled_accumulator, NULL,
 956                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 957                   G_TYPE_BOOLEAN, 2,
 958                   GTK_TYPE_TREE_ITER,
 959                   GTK_TYPE_TREE_PATH);
 960
 961   /**
 962    * GtkTreeView::row-expanded:
 963    * @tree_view: the object on which the signal is emitted
 964    * @iter: the tree iter of the expanded row
 965    * @path: a tree path that points to the row
 966    *
 967    * The given row has been expanded (child nodes are shown).
 968    */
 969   tree_view_signals[ROW_EXPANDED] =
 970     g_signal_new (I_("row-expanded"),
 971                   G_TYPE_FROM_CLASS (o_class),
 972                   G_SIGNAL_RUN_LAST,
 973                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 974                   NULL, NULL,
 975                   _gtk_marshal_VOID__BOXED_BOXED,
 976                   G_TYPE_NONE, 2,
 977                   GTK_TYPE_TREE_ITER,
 978                   GTK_TYPE_TREE_PATH);
 979
 980   /**
 981    * GtkTreeView::row-collapsed:
 982    * @tree_view: the object on which the signal is emitted
 983    * @iter: the tree iter of the collapsed row
 984    * @path: a tree path that points to the row
 985    *
 986    * The given row has been collapsed (child nodes are hidden).
 987    */
 988   tree_view_signals[ROW_COLLAPSED] =
 989     g_signal_new (I_("row-collapsed"),
 990                   G_TYPE_FROM_CLASS (o_class),
 991                   G_SIGNAL_RUN_LAST,
 992                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 993                   NULL, NULL,
 994                   _gtk_marshal_VOID__BOXED_BOXED,
 995                   G_TYPE_NONE, 2,
 996                   GTK_TYPE_TREE_ITER,
 997                   GTK_TYPE_TREE_PATH);
 998
 999   /**
1000    * GtkTreeView::columns-changed:
1001    * @tree_view: the object on which the signal is emitted
1002    *
1003    * The number of columns of the treeview has changed.
1004    */
1005   tree_view_signals[COLUMNS_CHANGED] =
1006     g_signal_new (I_("columns-changed"),
1007                   G_TYPE_FROM_CLASS (o_class),
1008                   G_SIGNAL_RUN_LAST,
1009                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1010                   NULL, NULL,
1011                   _gtk_marshal_VOID__VOID,
1012                   G_TYPE_NONE, 0);
1013
1014   /**
1015    * GtkTreeView::cursor-changed:
1016    * @tree_view: the object on which the signal is emitted
1017    *
1018    * The position of the cursor (focused cell) has changed.
1019    */
1020   tree_view_signals[CURSOR_CHANGED] =
1021     g_signal_new (I_("cursor-changed"),
1022                   G_TYPE_FROM_CLASS (o_class),
1023                   G_SIGNAL_RUN_LAST,
1024                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1025                   NULL, NULL,
1026                   _gtk_marshal_VOID__VOID,
1027                   G_TYPE_NONE, 0);
1028
1029   tree_view_signals[MOVE_CURSOR] =
1030     g_signal_new (I_("move-cursor"),
1031                   G_TYPE_FROM_CLASS (object_class),
1032                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1033                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1034                   NULL, NULL,
1035                   _gtk_marshal_BOOLEAN__ENUM_INT,
1036                   G_TYPE_BOOLEAN, 2,
1037                   GTK_TYPE_MOVEMENT_STEP,
1038                   G_TYPE_INT);
1039
1040   tree_view_signals[SELECT_ALL] =
1041     g_signal_new (I_("select-all"),
1042                   G_TYPE_FROM_CLASS (object_class),
1043                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1044                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1045                   NULL, NULL,
1046                   _gtk_marshal_BOOLEAN__VOID,
1047                   G_TYPE_BOOLEAN, 0);
1048
1049   tree_view_signals[UNSELECT_ALL] =
1050     g_signal_new (I_("unselect-all"),
1051                   G_TYPE_FROM_CLASS (object_class),
1052                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1053                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1054                   NULL, NULL,
1055                   _gtk_marshal_BOOLEAN__VOID,
1056                   G_TYPE_BOOLEAN, 0);
1057
1058   tree_view_signals[SELECT_CURSOR_ROW] =
1059     g_signal_new (I_("select-cursor-row"),
1060                   G_TYPE_FROM_CLASS (object_class),
1061                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1062                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1063                   NULL, NULL,
1064                   _gtk_marshal_BOOLEAN__BOOLEAN,
1065                   G_TYPE_BOOLEAN, 1,
1066                   G_TYPE_BOOLEAN);
1067
1068   tree_view_signals[TOGGLE_CURSOR_ROW] =
1069     g_signal_new (I_("toggle-cursor-row"),
1070                   G_TYPE_FROM_CLASS (object_class),
1071                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1072                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1073                   NULL, NULL,
1074                   _gtk_marshal_BOOLEAN__VOID,
1075                   G_TYPE_BOOLEAN, 0);
1076
1077   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1078     g_signal_new (I_("expand-collapse-cursor-row"),
1079                   G_TYPE_FROM_CLASS (object_class),
1080                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1081                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1082                   NULL, NULL,
1083                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1084                   G_TYPE_BOOLEAN, 3,
1085                   G_TYPE_BOOLEAN,
1086                   G_TYPE_BOOLEAN,
1087                   G_TYPE_BOOLEAN);
1088
1089   tree_view_signals[SELECT_CURSOR_PARENT] =
1090     g_signal_new (I_("select-cursor-parent"),
1091                   G_TYPE_FROM_CLASS (object_class),
1092                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1093                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1094                   NULL, NULL,
1095                   _gtk_marshal_BOOLEAN__VOID,
1096                   G_TYPE_BOOLEAN, 0);
1097
1098   tree_view_signals[START_INTERACTIVE_SEARCH] =
1099     g_signal_new (I_("start-interactive-search"),
1100                   G_TYPE_FROM_CLASS (object_class),
1101                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1102                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1103                   NULL, NULL,
1104                   _gtk_marshal_BOOLEAN__VOID,
1105                   G_TYPE_BOOLEAN, 0);
1106
1107   /* Key bindings */
1108   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0, TRUE,
1109                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1110   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0, TRUE,
1111                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1112
1113   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0, TRUE,
1114                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1115   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0, TRUE,
1116                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1117
1118   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, FALSE,
1119                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1120
1121   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, FALSE,
1122                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1123
1124   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0, TRUE,
1125                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1126   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0, TRUE,
1127                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1128
1129   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0, TRUE,
1130                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1131   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0, TRUE,
1132                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1133
1134   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0, TRUE,
1135                                   GTK_MOVEMENT_PAGES, -1);
1136   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0, TRUE,
1137                                   GTK_MOVEMENT_PAGES, -1);
1138
1139   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0, TRUE,
1140                                   GTK_MOVEMENT_PAGES, 1);
1141   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0, TRUE,
1142                                   GTK_MOVEMENT_PAGES, 1);
1143
1144
1145   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move-cursor", 2,
1146                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1147                                 G_TYPE_INT, 1);
1148
1149   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move-cursor", 2,
1150                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1151                                 G_TYPE_INT, -1);
1152
1153   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move-cursor", 2,
1154                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1155                                 G_TYPE_INT, 1);
1156
1157   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move-cursor", 2,
1158                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1159                                 G_TYPE_INT, -1);
1160
1161   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
1162                                 "move-cursor", 2,
1163                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1164                                 G_TYPE_INT, 1);
1165
1166   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
1167                                 "move-cursor", 2,
1168                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1169                                 G_TYPE_INT, -1);
1170
1171   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
1172                                 "move-cursor", 2,
1173                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1174                                 G_TYPE_INT, 1);
1175
1176   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
1177                                 "move-cursor", 2,
1178                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1179                                 G_TYPE_INT, -1);
1180
1181   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1182   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1183
1184   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select-all", 0);
1185   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
1186
1187   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1188   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1189
1190   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1191                                 G_TYPE_BOOLEAN, TRUE);
1192   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1193                                 G_TYPE_BOOLEAN, TRUE);
1194
1195   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select-cursor-row", 1,
1196                                 G_TYPE_BOOLEAN, TRUE);
1197   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "select-cursor-row", 1,
1198                                 G_TYPE_BOOLEAN, TRUE);
1199   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select-cursor-row", 1,
1200                                 G_TYPE_BOOLEAN, TRUE);
1201   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select-cursor-row", 1,
1202                                 G_TYPE_BOOLEAN, TRUE);
1203   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select-cursor-row", 1,
1204                                 G_TYPE_BOOLEAN, TRUE);
1205
1206   /* expand and collapse rows */
1207   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand-collapse-cursor-row", 3,
1208                                 G_TYPE_BOOLEAN, TRUE,
1209                                 G_TYPE_BOOLEAN, TRUE,
1210                                 G_TYPE_BOOLEAN, FALSE);
1211
1212   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
1213                                 "expand-collapse-cursor-row", 3,
1214                                 G_TYPE_BOOLEAN, TRUE,
1215                                 G_TYPE_BOOLEAN, TRUE,
1216                                 G_TYPE_BOOLEAN, TRUE);
1217   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
1218                                 "expand-collapse-cursor-row", 3,
1219                                 G_TYPE_BOOLEAN, TRUE,
1220                                 G_TYPE_BOOLEAN, TRUE,
1221                                 G_TYPE_BOOLEAN, TRUE);
1222
1223   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
1224                                 "expand-collapse-cursor-row", 3,
1225                                 G_TYPE_BOOLEAN, TRUE,
1226                                 G_TYPE_BOOLEAN, FALSE,
1227                                 G_TYPE_BOOLEAN, FALSE);
1228   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
1229                                 "expand-collapse-cursor-row", 3,
1230                                 G_TYPE_BOOLEAN, TRUE,
1231                                 G_TYPE_BOOLEAN, FALSE,
1232                                 G_TYPE_BOOLEAN, FALSE);
1233
1234   /* Not doable on US keyboards */
1235   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, TRUE,
1238                                 G_TYPE_BOOLEAN, TRUE);
1239   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand-collapse-cursor-row", 3,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, TRUE,
1242                                 G_TYPE_BOOLEAN, FALSE);
1243   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1244                                 G_TYPE_BOOLEAN, TRUE,
1245                                 G_TYPE_BOOLEAN, TRUE,
1246                                 G_TYPE_BOOLEAN, TRUE);
1247   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1248                                 G_TYPE_BOOLEAN, TRUE,
1249                                 G_TYPE_BOOLEAN, TRUE,
1250                                 G_TYPE_BOOLEAN, TRUE);
1251   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
1252                                 "expand-collapse-cursor-row", 3,
1253                                 G_TYPE_BOOLEAN, FALSE,
1254                                 G_TYPE_BOOLEAN, TRUE,
1255                                 G_TYPE_BOOLEAN, TRUE);
1256   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_SHIFT_MASK,
1257                                 "expand-collapse-cursor-row", 3,
1258                                 G_TYPE_BOOLEAN, FALSE,
1259                                 G_TYPE_BOOLEAN, TRUE,
1260                                 G_TYPE_BOOLEAN, TRUE);
1261   gtk_binding_entry_add_signal (binding_set, GDK_Right,
1262                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1263                                 "expand-collapse-cursor-row", 3,
1264                                 G_TYPE_BOOLEAN, FALSE,
1265                                 G_TYPE_BOOLEAN, TRUE,
1266                                 G_TYPE_BOOLEAN, TRUE);
1267   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
1268                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1269                                 "expand-collapse-cursor-row", 3,
1270                                 G_TYPE_BOOLEAN, FALSE,
1271                                 G_TYPE_BOOLEAN, TRUE,
1272                                 G_TYPE_BOOLEAN, TRUE);
1273
1274   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand-collapse-cursor-row", 3,
1275                                 G_TYPE_BOOLEAN, TRUE,
1276                                 G_TYPE_BOOLEAN, FALSE,
1277                                 G_TYPE_BOOLEAN, FALSE);
1278   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1279                                 G_TYPE_BOOLEAN, TRUE,
1280                                 G_TYPE_BOOLEAN, FALSE,
1281                                 G_TYPE_BOOLEAN, TRUE);
1282   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1283                                 G_TYPE_BOOLEAN, TRUE,
1284                                 G_TYPE_BOOLEAN, FALSE,
1285                                 G_TYPE_BOOLEAN, FALSE);
1286   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1287                                 G_TYPE_BOOLEAN, TRUE,
1288                                 G_TYPE_BOOLEAN, FALSE,
1289                                 G_TYPE_BOOLEAN, TRUE);
1290   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1291                                 "expand-collapse-cursor-row", 3,
1292                                 G_TYPE_BOOLEAN, FALSE,
1293                                 G_TYPE_BOOLEAN, FALSE,
1294                                 G_TYPE_BOOLEAN, TRUE);
1295   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_SHIFT_MASK,
1296                                 "expand-collapse-cursor-row", 3,
1297                                 G_TYPE_BOOLEAN, FALSE,
1298                                 G_TYPE_BOOLEAN, FALSE,
1299                                 G_TYPE_BOOLEAN, TRUE);
1300   gtk_binding_entry_add_signal (binding_set, GDK_Left,
1301                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1302                                 "expand-collapse-cursor-row", 3,
1303                                 G_TYPE_BOOLEAN, FALSE,
1304                                 G_TYPE_BOOLEAN, FALSE,
1305                                 G_TYPE_BOOLEAN, TRUE);
1306   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1307                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1308                                 "expand-collapse-cursor-row", 3,
1309                                 G_TYPE_BOOLEAN, FALSE,
1310                                 G_TYPE_BOOLEAN, FALSE,
1311                                 G_TYPE_BOOLEAN, TRUE);
1312
1313   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select-cursor-parent", 0);
1314   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1315
1316   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1317
1318   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1319
1320   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1321 }
1322
1323 static void
1324 gtk_tree_view_init (GtkTreeView *tree_view)
1325 {
1326   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1327
1328   gtk_widget_set_can_focus (GTK_WIDGET (tree_view), TRUE);
1329   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1330
1331   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1332                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1333                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1334
1335   /* We need some padding */
1336   tree_view->priv->dy = 0;
1337   tree_view->priv->cursor_offset = 0;
1338   tree_view->priv->n_columns = 0;
1339   tree_view->priv->header_height = 1;
1340   tree_view->priv->x_drag = 0;
1341   tree_view->priv->drag_pos = -1;
1342   tree_view->priv->header_has_focus = FALSE;
1343   tree_view->priv->pressed_button = -1;
1344   tree_view->priv->press_start_x = -1;
1345   tree_view->priv->press_start_y = -1;
1346   tree_view->priv->reorderable = FALSE;
1347   tree_view->priv->presize_handler_timer = 0;
1348   tree_view->priv->scroll_sync_timer = 0;
1349   tree_view->priv->fixed_height = -1;
1350   tree_view->priv->fixed_height_mode = FALSE;
1351   tree_view->priv->fixed_height_check = 0;
1352   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1353   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1354   tree_view->priv->enable_search = TRUE;
1355   tree_view->priv->search_column = -1;
1356   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1357   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1358   tree_view->priv->search_custom_entry_set = FALSE;
1359   tree_view->priv->typeselect_flush_timeout = 0;
1360   tree_view->priv->init_hadjust_value = TRUE;
1361   tree_view->priv->width = 0;
1362
1363   tree_view->priv->hover_selection = FALSE;
1364   tree_view->priv->hover_expand = FALSE;
1365
1366   tree_view->priv->level_indentation = 0;
1367
1368   tree_view->priv->rubber_banding_enable = FALSE;
1369
1370   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1371   tree_view->priv->tree_lines_enabled = FALSE;
1372
1373   tree_view->priv->tooltip_column = -1;
1374
1375   tree_view->priv->post_validation_flag = FALSE;
1376
1377   tree_view->priv->last_button_x = -1;
1378   tree_view->priv->last_button_y = -1;
1379
1380   tree_view->priv->event_last_x = -10000;
1381   tree_view->priv->event_last_y = -10000;
1382 }
1383
1384 \f
1385
1386 /* GObject Methods
1387  */
1388
1389 static void
1390 gtk_tree_view_set_property (GObject         *object,
1391                             guint            prop_id,
1392                             const GValue    *value,
1393                             GParamSpec      *pspec)
1394 {
1395   GtkTreeView *tree_view;
1396
1397   tree_view = GTK_TREE_VIEW (object);
1398
1399   switch (prop_id)
1400     {
1401     case PROP_MODEL:
1402       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1403       break;
1404     case PROP_HADJUSTMENT:
1405       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1406       break;
1407     case PROP_VADJUSTMENT:
1408       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1409       break;
1410     case PROP_HEADERS_VISIBLE:
1411       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1412       break;
1413     case PROP_HEADERS_CLICKABLE:
1414       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1415       break;
1416     case PROP_EXPANDER_COLUMN:
1417       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1418       break;
1419     case PROP_REORDERABLE:
1420       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1421       break;
1422     case PROP_RULES_HINT:
1423       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1424       break;
1425     case PROP_ENABLE_SEARCH:
1426       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1427       break;
1428     case PROP_SEARCH_COLUMN:
1429       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1430       break;
1431     case PROP_FIXED_HEIGHT_MODE:
1432       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1433       break;
1434     case PROP_HOVER_SELECTION:
1435       tree_view->priv->hover_selection = g_value_get_boolean (value);
1436       break;
1437     case PROP_HOVER_EXPAND:
1438       tree_view->priv->hover_expand = g_value_get_boolean (value);
1439       break;
1440     case PROP_SHOW_EXPANDERS:
1441       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1442       break;
1443     case PROP_LEVEL_INDENTATION:
1444       tree_view->priv->level_indentation = g_value_get_int (value);
1445       break;
1446     case PROP_RUBBER_BANDING:
1447       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1448       break;
1449     case PROP_ENABLE_GRID_LINES:
1450       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1451       break;
1452     case PROP_ENABLE_TREE_LINES:
1453       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1454       break;
1455     case PROP_TOOLTIP_COLUMN:
1456       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1457       break;
1458     default:
1459       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1460       break;
1461     }
1462 }
1463
1464 static void
1465 gtk_tree_view_get_property (GObject    *object,
1466                             guint       prop_id,
1467                             GValue     *value,
1468                             GParamSpec *pspec)
1469 {
1470   GtkTreeView *tree_view;
1471
1472   tree_view = GTK_TREE_VIEW (object);
1473
1474   switch (prop_id)
1475     {
1476     case PROP_MODEL:
1477       g_value_set_object (value, tree_view->priv->model);
1478       break;
1479     case PROP_HADJUSTMENT:
1480       g_value_set_object (value, tree_view->priv->hadjustment);
1481       break;
1482     case PROP_VADJUSTMENT:
1483       g_value_set_object (value, tree_view->priv->vadjustment);
1484       break;
1485     case PROP_HEADERS_VISIBLE:
1486       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1487       break;
1488     case PROP_HEADERS_CLICKABLE:
1489       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1490       break;
1491     case PROP_EXPANDER_COLUMN:
1492       g_value_set_object (value, tree_view->priv->expander_column);
1493       break;
1494     case PROP_REORDERABLE:
1495       g_value_set_boolean (value, tree_view->priv->reorderable);
1496       break;
1497     case PROP_RULES_HINT:
1498       g_value_set_boolean (value, tree_view->priv->has_rules);
1499       break;
1500     case PROP_ENABLE_SEARCH:
1501       g_value_set_boolean (value, tree_view->priv->enable_search);
1502       break;
1503     case PROP_SEARCH_COLUMN:
1504       g_value_set_int (value, tree_view->priv->search_column);
1505       break;
1506     case PROP_FIXED_HEIGHT_MODE:
1507       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1508       break;
1509     case PROP_HOVER_SELECTION:
1510       g_value_set_boolean (value, tree_view->priv->hover_selection);
1511       break;
1512     case PROP_HOVER_EXPAND:
1513       g_value_set_boolean (value, tree_view->priv->hover_expand);
1514       break;
1515     case PROP_SHOW_EXPANDERS:
1516       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1517       break;
1518     case PROP_LEVEL_INDENTATION:
1519       g_value_set_int (value, tree_view->priv->level_indentation);
1520       break;
1521     case PROP_RUBBER_BANDING:
1522       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1523       break;
1524     case PROP_ENABLE_GRID_LINES:
1525       g_value_set_enum (value, tree_view->priv->grid_lines);
1526       break;
1527     case PROP_ENABLE_TREE_LINES:
1528       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1529       break;
1530     case PROP_TOOLTIP_COLUMN:
1531       g_value_set_int (value, tree_view->priv->tooltip_column);
1532       break;
1533     default:
1534       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1535       break;
1536     }
1537 }
1538
1539 static void
1540 gtk_tree_view_finalize (GObject *object)
1541 {
1542   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1543 }
1544
1545
1546 static GtkBuildableIface *parent_buildable_iface;
1547
1548 static void
1549 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1550 {
1551   parent_buildable_iface = g_type_interface_peek_parent (iface);
1552   iface->add_child = gtk_tree_view_buildable_add_child;
1553   iface->get_internal_child = gtk_tree_view_buildable_get_internal_child;
1554 }
1555
1556 static void
1557 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1558                                    GtkBuilder  *builder,
1559                                    GObject     *child,
1560                                    const gchar *type)
1561 {
1562   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1563 }
1564
1565 static GObject *
1566 gtk_tree_view_buildable_get_internal_child (GtkBuildable      *buildable,
1567                                             GtkBuilder        *builder,
1568                                             const gchar       *childname)
1569 {
1570     if (strcmp (childname, "selection") == 0)
1571       return G_OBJECT (GTK_TREE_VIEW (buildable)->priv->selection);
1572
1573     return parent_buildable_iface->get_internal_child (buildable,
1574                                                        builder,
1575                                                        childname);
1576 }
1577
1578 /* GtkObject Methods
1579  */
1580
1581 static void
1582 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1583 {
1584   _gtk_rbtree_free (tree_view->priv->tree);
1585
1586   tree_view->priv->tree = NULL;
1587   tree_view->priv->button_pressed_node = NULL;
1588   tree_view->priv->button_pressed_tree = NULL;
1589   tree_view->priv->prelight_tree = NULL;
1590   tree_view->priv->prelight_node = NULL;
1591   tree_view->priv->expanded_collapsed_node = NULL;
1592   tree_view->priv->expanded_collapsed_tree = NULL;
1593 }
1594
1595 static void
1596 gtk_tree_view_destroy (GtkObject *object)
1597 {
1598   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1599   GList *list;
1600
1601   gtk_tree_view_stop_editing (tree_view, TRUE);
1602
1603   if (tree_view->priv->columns != NULL)
1604     {
1605       list = tree_view->priv->columns;
1606       while (list)
1607         {
1608           GtkTreeViewColumn *column;
1609           column = GTK_TREE_VIEW_COLUMN (list->data);
1610           list = list->next;
1611           gtk_tree_view_remove_column (tree_view, column);
1612         }
1613       tree_view->priv->columns = NULL;
1614     }
1615
1616   if (tree_view->priv->tree != NULL)
1617     {
1618       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1619
1620       gtk_tree_view_free_rbtree (tree_view);
1621     }
1622
1623   if (tree_view->priv->selection != NULL)
1624     {
1625       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1626       g_object_unref (tree_view->priv->selection);
1627       tree_view->priv->selection = NULL;
1628     }
1629
1630   if (tree_view->priv->scroll_to_path != NULL)
1631     {
1632       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1633       tree_view->priv->scroll_to_path = NULL;
1634     }
1635
1636   if (tree_view->priv->drag_dest_row != NULL)
1637     {
1638       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1639       tree_view->priv->drag_dest_row = NULL;
1640     }
1641
1642   if (tree_view->priv->top_row != NULL)
1643     {
1644       gtk_tree_row_reference_free (tree_view->priv->top_row);
1645       tree_view->priv->top_row = NULL;
1646     }
1647
1648   if (tree_view->priv->column_drop_func_data &&
1649       tree_view->priv->column_drop_func_data_destroy)
1650     {
1651       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1652       tree_view->priv->column_drop_func_data = NULL;
1653     }
1654
1655   if (tree_view->priv->destroy_count_destroy &&
1656       tree_view->priv->destroy_count_data)
1657     {
1658       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1659       tree_view->priv->destroy_count_data = NULL;
1660     }
1661
1662   gtk_tree_row_reference_free (tree_view->priv->cursor);
1663   tree_view->priv->cursor = NULL;
1664
1665   gtk_tree_row_reference_free (tree_view->priv->anchor);
1666   tree_view->priv->anchor = NULL;
1667
1668   /* destroy interactive search dialog */
1669   if (tree_view->priv->search_window)
1670     {
1671       gtk_widget_destroy (tree_view->priv->search_window);
1672       tree_view->priv->search_window = NULL;
1673       tree_view->priv->search_entry = NULL;
1674       if (tree_view->priv->typeselect_flush_timeout)
1675         {
1676           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1677           tree_view->priv->typeselect_flush_timeout = 0;
1678         }
1679     }
1680
1681   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1682     {
1683       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1684       tree_view->priv->search_user_data = NULL;
1685     }
1686
1687   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1688     {
1689       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1690       tree_view->priv->search_position_user_data = NULL;
1691     }
1692
1693   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1694     {
1695       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1696       tree_view->priv->row_separator_data = NULL;
1697     }
1698
1699   gtk_tree_view_set_model (tree_view, NULL);
1700
1701   if (tree_view->priv->hadjustment)
1702     {
1703       g_object_unref (tree_view->priv->hadjustment);
1704       tree_view->priv->hadjustment = NULL;
1705     }
1706   if (tree_view->priv->vadjustment)
1707     {
1708       g_object_unref (tree_view->priv->vadjustment);
1709       tree_view->priv->vadjustment = NULL;
1710     }
1711
1712   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1713 }
1714
1715 \f
1716
1717 /* GtkWidget Methods
1718  */
1719
1720 /* GtkWidget::map helper */
1721 static void
1722 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1723 {
1724   GList *list;
1725
1726   g_return_if_fail (gtk_widget_get_mapped (GTK_WIDGET (tree_view)));
1727
1728   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1729     {
1730       GtkTreeViewColumn *column;
1731
1732       for (list = tree_view->priv->columns; list; list = list->next)
1733         {
1734           column = list->data;
1735           if (gtk_widget_get_visible (column->button) &&
1736               !gtk_widget_get_mapped (column->button))
1737             gtk_widget_map (column->button);
1738         }
1739       for (list = tree_view->priv->columns; list; list = list->next)
1740         {
1741           column = list->data;
1742           if (column->visible == FALSE)
1743             continue;
1744           if (column->resizable)
1745             {
1746               gdk_window_raise (column->window);
1747               gdk_window_show (column->window);
1748             }
1749           else
1750             gdk_window_hide (column->window);
1751         }
1752       gdk_window_show (tree_view->priv->header_window);
1753     }
1754 }
1755
1756 static void
1757 gtk_tree_view_map (GtkWidget *widget)
1758 {
1759   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1760   GList *tmp_list;
1761
1762   gtk_widget_set_mapped (widget, TRUE);
1763
1764   tmp_list = tree_view->priv->children;
1765   while (tmp_list)
1766     {
1767       GtkTreeViewChild *child = tmp_list->data;
1768       tmp_list = tmp_list->next;
1769
1770       if (gtk_widget_get_visible (child->widget))
1771         {
1772           if (!gtk_widget_get_mapped (child->widget))
1773             gtk_widget_map (child->widget);
1774         }
1775     }
1776   gdk_window_show (tree_view->priv->bin_window);
1777
1778   gtk_tree_view_map_buttons (tree_view);
1779
1780   gdk_window_show (widget->window);
1781 }
1782
1783 static void
1784 gtk_tree_view_realize (GtkWidget *widget)
1785 {
1786   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1787   GList *tmp_list;
1788   GdkWindowAttr attributes;
1789   gint attributes_mask;
1790
1791   gtk_widget_set_realized (widget, TRUE);
1792
1793   /* Make the main, clipping window */
1794   attributes.window_type = GDK_WINDOW_CHILD;
1795   attributes.x = widget->allocation.x;
1796   attributes.y = widget->allocation.y;
1797   attributes.width = widget->allocation.width;
1798   attributes.height = widget->allocation.height;
1799   attributes.wclass = GDK_INPUT_OUTPUT;
1800   attributes.visual = gtk_widget_get_visual (widget);
1801   attributes.colormap = gtk_widget_get_colormap (widget);
1802   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1803
1804   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1805
1806   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1807                                    &attributes, attributes_mask);
1808   gdk_window_set_user_data (widget->window, widget);
1809
1810   /* Make the window for the tree */
1811   attributes.x = 0;
1812   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1813   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1814   attributes.height = widget->allocation.height;
1815   attributes.event_mask = (GDK_EXPOSURE_MASK |
1816                            GDK_SCROLL_MASK |
1817                            GDK_POINTER_MOTION_MASK |
1818                            GDK_ENTER_NOTIFY_MASK |
1819                            GDK_LEAVE_NOTIFY_MASK |
1820                            GDK_BUTTON_PRESS_MASK |
1821                            GDK_BUTTON_RELEASE_MASK |
1822                            gtk_widget_get_events (widget));
1823
1824   tree_view->priv->bin_window = gdk_window_new (widget->window,
1825                                                 &attributes, attributes_mask);
1826   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1827
1828   /* Make the column header window */
1829   attributes.x = 0;
1830   attributes.y = 0;
1831   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1832   attributes.height = tree_view->priv->header_height;
1833   attributes.event_mask = (GDK_EXPOSURE_MASK |
1834                            GDK_SCROLL_MASK |
1835                            GDK_ENTER_NOTIFY_MASK |
1836                            GDK_LEAVE_NOTIFY_MASK |
1837                            GDK_BUTTON_PRESS_MASK |
1838                            GDK_BUTTON_RELEASE_MASK |
1839                            GDK_KEY_PRESS_MASK |
1840                            GDK_KEY_RELEASE_MASK |
1841                            gtk_widget_get_events (widget));
1842
1843   tree_view->priv->header_window = gdk_window_new (widget->window,
1844                                                    &attributes, attributes_mask);
1845   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1846
1847   /* Add them all up. */
1848   widget->style = gtk_style_attach (widget->style, widget->window);
1849   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1850   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1851   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1852
1853   tmp_list = tree_view->priv->children;
1854   while (tmp_list)
1855     {
1856       GtkTreeViewChild *child = tmp_list->data;
1857       tmp_list = tmp_list->next;
1858
1859       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1860     }
1861
1862   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1863     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1864
1865   /* Need to call those here, since they create GCs */
1866   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1867   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1868
1869   install_presize_handler (tree_view);
1870 }
1871
1872 static void
1873 gtk_tree_view_unrealize (GtkWidget *widget)
1874 {
1875   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1876   GtkTreeViewPrivate *priv = tree_view->priv;
1877   GList *list;
1878
1879   if (priv->scroll_timeout != 0)
1880     {
1881       g_source_remove (priv->scroll_timeout);
1882       priv->scroll_timeout = 0;
1883     }
1884
1885   if (priv->auto_expand_timeout != 0)
1886     {
1887       g_source_remove (priv->auto_expand_timeout);
1888       priv->auto_expand_timeout = 0;
1889     }
1890
1891   if (priv->open_dest_timeout != 0)
1892     {
1893       g_source_remove (priv->open_dest_timeout);
1894       priv->open_dest_timeout = 0;
1895     }
1896
1897   remove_expand_collapse_timeout (tree_view);
1898
1899   if (priv->presize_handler_timer != 0)
1900     {
1901       g_source_remove (priv->presize_handler_timer);
1902       priv->presize_handler_timer = 0;
1903     }
1904
1905   if (priv->validate_rows_timer != 0)
1906     {
1907       g_source_remove (priv->validate_rows_timer);
1908       priv->validate_rows_timer = 0;
1909     }
1910
1911   if (priv->scroll_sync_timer != 0)
1912     {
1913       g_source_remove (priv->scroll_sync_timer);
1914       priv->scroll_sync_timer = 0;
1915     }
1916
1917   if (priv->typeselect_flush_timeout)
1918     {
1919       g_source_remove (priv->typeselect_flush_timeout);
1920       priv->typeselect_flush_timeout = 0;
1921     }
1922
1923   for (list = priv->columns; list; list = list->next)
1924     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1925
1926   gdk_window_set_user_data (priv->bin_window, NULL);
1927   gdk_window_destroy (priv->bin_window);
1928   priv->bin_window = NULL;
1929
1930   gdk_window_set_user_data (priv->header_window, NULL);
1931   gdk_window_destroy (priv->header_window);
1932   priv->header_window = NULL;
1933
1934   if (priv->drag_window)
1935     {
1936       gdk_window_set_user_data (priv->drag_window, NULL);
1937       gdk_window_destroy (priv->drag_window);
1938       priv->drag_window = NULL;
1939     }
1940
1941   if (priv->drag_highlight_window)
1942     {
1943       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1944       gdk_window_destroy (priv->drag_highlight_window);
1945       priv->drag_highlight_window = NULL;
1946     }
1947
1948   if (priv->tree_line_gc)
1949     {
1950       g_object_unref (priv->tree_line_gc);
1951       priv->tree_line_gc = NULL;
1952     }
1953
1954   if (priv->grid_line_gc)
1955     {
1956       g_object_unref (priv->grid_line_gc);
1957       priv->grid_line_gc = NULL;
1958     }
1959
1960   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1961 }
1962
1963 /* GtkWidget::size_request helper */
1964 static void
1965 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1966 {
1967   GList *list;
1968
1969   tree_view->priv->header_height = 0;
1970
1971   if (tree_view->priv->model)
1972     {
1973       for (list = tree_view->priv->columns; list; list = list->next)
1974         {
1975           GtkRequisition requisition;
1976           GtkTreeViewColumn *column = list->data;
1977
1978           if (column->button == NULL)
1979             continue;
1980
1981           column = list->data;
1982
1983           gtk_widget_size_request (column->button, &requisition);
1984           column->button_request = requisition.width;
1985           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1986         }
1987     }
1988 }
1989
1990
1991 /* Called only by ::size_request */
1992 static void
1993 gtk_tree_view_update_size (GtkTreeView *tree_view)
1994 {
1995   GList *list;
1996   GtkTreeViewColumn *column;
1997   gint i;
1998
1999   if (tree_view->priv->model == NULL)
2000     {
2001       tree_view->priv->width = 0;
2002       tree_view->priv->prev_width = 0;
2003       tree_view->priv->height = 0;
2004       return;
2005     }
2006
2007   tree_view->priv->prev_width = tree_view->priv->width;
2008   tree_view->priv->width = 0;
2009
2010   /* keep this in sync with size_allocate below */
2011   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
2012     {
2013       gint real_requested_width = 0;
2014       column = list->data;
2015       if (!column->visible)
2016         continue;
2017
2018       if (column->use_resized_width)
2019         {
2020           real_requested_width = column->resized_width;
2021         }
2022       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2023         {
2024           real_requested_width = column->fixed_width;
2025         }
2026       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2027         {
2028           real_requested_width = MAX (column->requested_width, column->button_request);
2029         }
2030       else
2031         {
2032           real_requested_width = column->requested_width;
2033         }
2034
2035       if (column->min_width != -1)
2036         real_requested_width = MAX (real_requested_width, column->min_width);
2037       if (column->max_width != -1)
2038         real_requested_width = MIN (real_requested_width, column->max_width);
2039
2040       tree_view->priv->width += real_requested_width;
2041     }
2042
2043   if (tree_view->priv->tree == NULL)
2044     tree_view->priv->height = 0;
2045   else
2046     tree_view->priv->height = tree_view->priv->tree->root->offset;
2047 }
2048
2049 static void
2050 gtk_tree_view_size_request (GtkWidget      *widget,
2051                             GtkRequisition *requisition)
2052 {
2053   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2054   GList *tmp_list;
2055
2056   /* we validate some rows initially just to make sure we have some size.
2057    * In practice, with a lot of static lists, this should get a good width.
2058    */
2059   do_validate_rows (tree_view, FALSE);
2060   gtk_tree_view_size_request_columns (tree_view);
2061   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2062
2063   requisition->width = tree_view->priv->width;
2064   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2065
2066   tmp_list = tree_view->priv->children;
2067
2068   while (tmp_list)
2069     {
2070       GtkTreeViewChild *child = tmp_list->data;
2071       GtkRequisition child_requisition;
2072
2073       tmp_list = tmp_list->next;
2074
2075       if (gtk_widget_get_visible (child->widget))
2076         gtk_widget_size_request (child->widget, &child_requisition);
2077     }
2078 }
2079
2080 static int
2081 gtk_tree_view_calculate_width_before_expander (GtkTreeView *tree_view)
2082 {
2083   int width = 0;
2084   GList *list;
2085   gboolean rtl;
2086
2087   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2088   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2089        list->data != tree_view->priv->expander_column;
2090        list = (rtl ? list->prev : list->next))
2091     {
2092       GtkTreeViewColumn *column = list->data;
2093
2094       width += column->width;
2095     }
2096
2097   return width;
2098 }
2099
2100 static void
2101 invalidate_column (GtkTreeView       *tree_view,
2102                    GtkTreeViewColumn *column)
2103 {
2104   gint column_offset = 0;
2105   GList *list;
2106   GtkWidget *widget = GTK_WIDGET (tree_view);
2107   gboolean rtl;
2108
2109   if (!gtk_widget_get_realized (widget))
2110     return;
2111
2112   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2113   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2114        list;
2115        list = (rtl ? list->prev : list->next))
2116     {
2117       GtkTreeViewColumn *tmpcolumn = list->data;
2118       if (tmpcolumn == column)
2119         {
2120           GdkRectangle invalid_rect;
2121
2122           invalid_rect.x = column_offset;
2123           invalid_rect.y = 0;
2124           invalid_rect.width = column->width;
2125           invalid_rect.height = widget->allocation.height;
2126
2127           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2128           break;
2129         }
2130
2131       column_offset += tmpcolumn->width;
2132     }
2133 }
2134
2135 static void
2136 invalidate_last_column (GtkTreeView *tree_view)
2137 {
2138   GList *last_column;
2139   gboolean rtl;
2140
2141   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2142
2143   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2144        last_column;
2145        last_column = (rtl ? last_column->next : last_column->prev))
2146     {
2147       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2148         {
2149           invalidate_column (tree_view, last_column->data);
2150           return;
2151         }
2152     }
2153 }
2154
2155 static gint
2156 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2157                                                     GtkTreeViewColumn *column)
2158 {
2159   gint real_requested_width;
2160
2161   if (column->use_resized_width)
2162     {
2163       real_requested_width = column->resized_width;
2164     }
2165   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2166     {
2167       real_requested_width = column->fixed_width;
2168     }
2169   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2170     {
2171       real_requested_width = MAX (column->requested_width, column->button_request);
2172     }
2173   else
2174     {
2175       real_requested_width = column->requested_width;
2176       if (real_requested_width < 0)
2177         real_requested_width = 0;
2178     }
2179
2180   if (column->min_width != -1)
2181     real_requested_width = MAX (real_requested_width, column->min_width);
2182   if (column->max_width != -1)
2183     real_requested_width = MIN (real_requested_width, column->max_width);
2184
2185   return real_requested_width;
2186 }
2187
2188 /* GtkWidget::size_allocate helper */
2189 static void
2190 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2191                                      gboolean  *width_changed)
2192 {
2193   GtkTreeView *tree_view;
2194   GList *list, *first_column, *last_column;
2195   GtkTreeViewColumn *column;
2196   GtkAllocation allocation;
2197   gint width = 0;
2198   gint extra, extra_per_column, extra_for_last;
2199   gint full_requested_width = 0;
2200   gint number_of_expand_columns = 0;
2201   gboolean column_changed = FALSE;
2202   gboolean rtl;
2203   gboolean update_expand;
2204
2205   tree_view = GTK_TREE_VIEW (widget);
2206
2207   for (last_column = g_list_last (tree_view->priv->columns);
2208        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2209        last_column = last_column->prev)
2210     ;
2211   if (last_column == NULL)
2212     return;
2213
2214   for (first_column = g_list_first (tree_view->priv->columns);
2215        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2216        first_column = first_column->next)
2217     ;
2218
2219   allocation.y = 0;
2220   allocation.height = tree_view->priv->header_height;
2221
2222   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2223
2224   /* find out how many extra space and expandable columns we have */
2225   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2226     {
2227       column = (GtkTreeViewColumn *)list->data;
2228
2229       if (!column->visible)
2230         continue;
2231
2232       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2233
2234       if (column->expand)
2235         number_of_expand_columns++;
2236     }
2237
2238   /* Only update the expand value if the width of the widget has changed,
2239    * or the number of expand columns has changed, or if there are no expand
2240    * columns, or if we didn't have an size-allocation yet after the
2241    * last validated node.
2242    */
2243   update_expand = (width_changed && *width_changed == TRUE)
2244       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2245       || number_of_expand_columns == 0
2246       || tree_view->priv->post_validation_flag == TRUE;
2247
2248   tree_view->priv->post_validation_flag = FALSE;
2249
2250   if (!update_expand)
2251     {
2252       extra = tree_view->priv->last_extra_space;
2253       extra_for_last = MAX (widget->allocation.width - full_requested_width - extra, 0);
2254     }
2255   else
2256     {
2257       extra = MAX (widget->allocation.width - full_requested_width, 0);
2258       extra_for_last = 0;
2259
2260       tree_view->priv->last_extra_space = extra;
2261     }
2262
2263   if (number_of_expand_columns > 0)
2264     extra_per_column = extra/number_of_expand_columns;
2265   else
2266     extra_per_column = 0;
2267
2268   if (update_expand)
2269     {
2270       tree_view->priv->last_extra_space_per_column = extra_per_column;
2271       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2272     }
2273
2274   for (list = (rtl ? last_column : first_column);
2275        list != (rtl ? first_column->prev : last_column->next);
2276        list = (rtl ? list->prev : list->next))
2277     {
2278       gint real_requested_width = 0;
2279       gint old_width;
2280
2281       column = list->data;
2282       old_width = column->width;
2283
2284       if (!column->visible)
2285         continue;
2286
2287       /* We need to handle the dragged button specially.
2288        */
2289       if (column == tree_view->priv->drag_column)
2290         {
2291           GtkAllocation drag_allocation;
2292           gdk_drawable_get_size (tree_view->priv->drag_window,
2293                                  &(drag_allocation.width),
2294                                  &(drag_allocation.height));
2295           drag_allocation.x = 0;
2296           drag_allocation.y = 0;
2297           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2298                                     &drag_allocation);
2299           width += drag_allocation.width;
2300           continue;
2301         }
2302
2303       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2304
2305       allocation.x = width;
2306       column->width = real_requested_width;
2307
2308       if (column->expand)
2309         {
2310           if (number_of_expand_columns == 1)
2311             {
2312               /* We add the remander to the last column as
2313                * */
2314               column->width += extra;
2315             }
2316           else
2317             {
2318               column->width += extra_per_column;
2319               extra -= extra_per_column;
2320               number_of_expand_columns --;
2321             }
2322         }
2323       else if (number_of_expand_columns == 0 &&
2324                list == last_column)
2325         {
2326           column->width += extra;
2327         }
2328
2329       /* In addition to expand, the last column can get even more
2330        * extra space so all available space is filled up.
2331        */
2332       if (extra_for_last > 0 && list == last_column)
2333         column->width += extra_for_last;
2334
2335       g_object_notify (G_OBJECT (column), "width");
2336
2337       allocation.width = column->width;
2338       width += column->width;
2339
2340       if (column->width > old_width)
2341         column_changed = TRUE;
2342
2343       gtk_widget_size_allocate (column->button, &allocation);
2344
2345       if (column->window)
2346         gdk_window_move_resize (column->window,
2347                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2348                                 allocation.y,
2349                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2350     }
2351
2352   /* We change the width here.  The user might have been resizing columns,
2353    * so the total width of the tree view changes.
2354    */
2355   tree_view->priv->width = width;
2356   if (width_changed)
2357     *width_changed = TRUE;
2358
2359   if (column_changed)
2360     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2361 }
2362
2363
2364 static void
2365 gtk_tree_view_size_allocate (GtkWidget     *widget,
2366                              GtkAllocation *allocation)
2367 {
2368   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2369   GList *tmp_list;
2370   gboolean width_changed = FALSE;
2371   gint old_width = widget->allocation.width;
2372
2373   if (allocation->width != widget->allocation.width)
2374     width_changed = TRUE;
2375
2376   widget->allocation = *allocation;
2377
2378   tmp_list = tree_view->priv->children;
2379
2380   while (tmp_list)
2381     {
2382       GtkAllocation allocation;
2383
2384       GtkTreeViewChild *child = tmp_list->data;
2385       tmp_list = tmp_list->next;
2386
2387       /* totally ignore our child's requisition */
2388       allocation.x = child->x;
2389       allocation.y = child->y;
2390       allocation.width = child->width;
2391       allocation.height = child->height;
2392       gtk_widget_size_allocate (child->widget, &allocation);
2393     }
2394
2395   /* We size-allocate the columns first because the width of the
2396    * tree view (used in updating the adjustments below) might change.
2397    */
2398   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2399
2400   tree_view->priv->hadjustment->page_size = allocation->width;
2401   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2402   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2403   tree_view->priv->hadjustment->lower = 0;
2404   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2405
2406   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2407     {
2408       if (allocation->width < tree_view->priv->width)
2409         {
2410           if (tree_view->priv->init_hadjust_value)
2411             {
2412               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2413               tree_view->priv->init_hadjust_value = FALSE;
2414             }
2415           else if (allocation->width != old_width)
2416             {
2417               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2418             }
2419           else
2420             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);
2421         }
2422       else
2423         {
2424           tree_view->priv->hadjustment->value = 0;
2425           tree_view->priv->init_hadjust_value = TRUE;
2426         }
2427     }
2428   else
2429     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2430       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2431
2432   gtk_adjustment_changed (tree_view->priv->hadjustment);
2433
2434   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2435   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2436   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2437   tree_view->priv->vadjustment->lower = 0;
2438   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2439
2440   gtk_adjustment_changed (tree_view->priv->vadjustment);
2441
2442   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2443   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2444     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2445   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2446     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2447                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2448   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2449     gtk_tree_view_top_row_to_dy (tree_view);
2450   else
2451     gtk_tree_view_dy_to_top_row (tree_view);
2452
2453   if (gtk_widget_get_realized (widget))
2454     {
2455       gdk_window_move_resize (widget->window,
2456                               allocation->x, allocation->y,
2457                               allocation->width, allocation->height);
2458       gdk_window_move_resize (tree_view->priv->header_window,
2459                               - (gint) tree_view->priv->hadjustment->value,
2460                               0,
2461                               MAX (tree_view->priv->width, allocation->width),
2462                               tree_view->priv->header_height);
2463       gdk_window_move_resize (tree_view->priv->bin_window,
2464                               - (gint) tree_view->priv->hadjustment->value,
2465                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2466                               MAX (tree_view->priv->width, allocation->width),
2467                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2468     }
2469
2470   if (tree_view->priv->tree == NULL)
2471     invalidate_empty_focus (tree_view);
2472
2473   if (gtk_widget_get_realized (widget))
2474     {
2475       gboolean has_expand_column = FALSE;
2476       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2477         {
2478           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2479             {
2480               has_expand_column = TRUE;
2481               break;
2482             }
2483         }
2484
2485       if (width_changed && tree_view->priv->expander_column)
2486         {
2487           /* Might seem awkward, but is the best heuristic I could come up
2488            * with.  Only if the width of the columns before the expander
2489            * changes, we will update the prelight status.  It is this
2490            * width that makes the expander move vertically.  Always updating
2491            * prelight status causes trouble with hover selections.
2492            */
2493           gint width_before_expander;
2494
2495           width_before_expander = gtk_tree_view_calculate_width_before_expander (tree_view);
2496
2497           if (tree_view->priv->prev_width_before_expander
2498               != width_before_expander)
2499               update_prelight (tree_view,
2500                                tree_view->priv->event_last_x,
2501                                tree_view->priv->event_last_y);
2502
2503           tree_view->priv->prev_width_before_expander = width_before_expander;
2504         }
2505
2506       /* This little hack only works if we have an LTR locale, and no column has the  */
2507       if (width_changed)
2508         {
2509           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2510               ! has_expand_column)
2511             invalidate_last_column (tree_view);
2512           else
2513             gtk_widget_queue_draw (widget);
2514         }
2515     }
2516 }
2517
2518 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2519 static void
2520 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2521 {
2522   GtkWidget *widget = GTK_WIDGET (tree_view);
2523
2524   if (gtk_widget_get_can_focus (widget) && !gtk_widget_has_focus (widget))
2525     gtk_widget_grab_focus (widget);
2526   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2527 }
2528
2529 static inline gboolean
2530 row_is_separator (GtkTreeView *tree_view,
2531                   GtkTreeIter *iter,
2532                   GtkTreePath *path)
2533 {
2534   gboolean is_separator = FALSE;
2535
2536   if (tree_view->priv->row_separator_func)
2537     {
2538       GtkTreeIter tmpiter;
2539
2540       if (iter)
2541         tmpiter = *iter;
2542       else
2543         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2544
2545       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2546                                                           &tmpiter,
2547                                                           tree_view->priv->row_separator_data);
2548     }
2549
2550   return is_separator;
2551 }
2552
2553 static gboolean
2554 gtk_tree_view_button_press (GtkWidget      *widget,
2555                             GdkEventButton *event)
2556 {
2557   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2558   GList *list;
2559   GtkTreeViewColumn *column = NULL;
2560   gint i;
2561   GdkRectangle background_area;
2562   GdkRectangle cell_area;
2563   gint vertical_separator;
2564   gint horizontal_separator;
2565   gboolean path_is_selectable;
2566   gboolean rtl;
2567
2568   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2569   gtk_tree_view_stop_editing (tree_view, FALSE);
2570   gtk_widget_style_get (widget,
2571                         "vertical-separator", &vertical_separator,
2572                         "horizontal-separator", &horizontal_separator,
2573                         NULL);
2574
2575
2576   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2577    * we're done handling the button press.
2578    */
2579
2580   if (event->window == tree_view->priv->bin_window)
2581     {
2582       GtkRBNode *node;
2583       GtkRBTree *tree;
2584       GtkTreePath *path;
2585       gchar *path_string;
2586       gint depth;
2587       gint new_y;
2588       gint y_offset;
2589       gint dval;
2590       gint pre_val, aft_val;
2591       GtkTreeViewColumn *column = NULL;
2592       GtkCellRenderer *focus_cell = NULL;
2593       gint column_handled_click = FALSE;
2594       gboolean row_double_click = FALSE;
2595       gboolean rtl;
2596       gboolean node_selected;
2597
2598       /* Empty tree? */
2599       if (tree_view->priv->tree == NULL)
2600         {
2601           grab_focus_and_unset_draw_keyfocus (tree_view);
2602           return TRUE;
2603         }
2604
2605       /* are we in an arrow? */
2606       if (tree_view->priv->prelight_node &&
2607           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2608           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2609         {
2610           if (event->button == 1)
2611             {
2612               gtk_grab_add (widget);
2613               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2614               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2615               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2616                                         tree_view->priv->prelight_tree,
2617                                         tree_view->priv->prelight_node,
2618                                         event->x,
2619                                         event->y);
2620             }
2621
2622           grab_focus_and_unset_draw_keyfocus (tree_view);
2623           return TRUE;
2624         }
2625
2626       /* find the node that was clicked */
2627       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2628       if (new_y < 0)
2629         new_y = 0;
2630       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2631
2632       if (node == NULL)
2633         {
2634           /* We clicked in dead space */
2635           grab_focus_and_unset_draw_keyfocus (tree_view);
2636           return TRUE;
2637         }
2638
2639       /* Get the path and the node */
2640       path = _gtk_tree_view_find_path (tree_view, tree, node);
2641       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2642
2643       if (!path_is_selectable)
2644         {
2645           gtk_tree_path_free (path);
2646           grab_focus_and_unset_draw_keyfocus (tree_view);
2647           return TRUE;
2648         }
2649
2650       depth = gtk_tree_path_get_depth (path);
2651       background_area.y = y_offset + event->y;
2652       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2653       background_area.x = 0;
2654
2655
2656       /* Let the column have a chance at selecting it. */
2657       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2658       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2659            list; list = (rtl ? list->prev : list->next))
2660         {
2661           GtkTreeViewColumn *candidate = list->data;
2662
2663           if (!candidate->visible)
2664             continue;
2665
2666           background_area.width = candidate->width;
2667           if ((background_area.x > (gint) event->x) ||
2668               (background_area.x + background_area.width <= (gint) event->x))
2669             {
2670               background_area.x += background_area.width;
2671               continue;
2672             }
2673
2674           /* we found the focus column */
2675           column = candidate;
2676           cell_area = background_area;
2677           cell_area.width -= horizontal_separator;
2678           cell_area.height -= vertical_separator;
2679           cell_area.x += horizontal_separator/2;
2680           cell_area.y += vertical_separator/2;
2681           if (gtk_tree_view_is_expander_column (tree_view, column))
2682             {
2683               if (!rtl)
2684                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2685               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2686
2687               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2688                 {
2689                   if (!rtl)
2690                     cell_area.x += depth * tree_view->priv->expander_size;
2691                   cell_area.width -= depth * tree_view->priv->expander_size;
2692                 }
2693             }
2694           break;
2695         }
2696
2697       if (column == NULL)
2698         {
2699           gtk_tree_path_free (path);
2700           grab_focus_and_unset_draw_keyfocus (tree_view);
2701           return FALSE;
2702         }
2703
2704       tree_view->priv->focus_column = column;
2705
2706       /* decide if we edit */
2707       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2708           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2709         {
2710           GtkTreePath *anchor;
2711           GtkTreeIter iter;
2712
2713           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2714           gtk_tree_view_column_cell_set_cell_data (column,
2715                                                    tree_view->priv->model,
2716                                                    &iter,
2717                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2718                                                    node->children?TRUE:FALSE);
2719
2720           if (tree_view->priv->anchor)
2721             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2722           else
2723             anchor = NULL;
2724
2725           if ((anchor && !gtk_tree_path_compare (anchor, path))
2726               || !_gtk_tree_view_column_has_editable_cell (column))
2727             {
2728               GtkCellEditable *cell_editable = NULL;
2729
2730               /* FIXME: get the right flags */
2731               guint flags = 0;
2732
2733               path_string = gtk_tree_path_to_string (path);
2734
2735               if (_gtk_tree_view_column_cell_event (column,
2736                                                     &cell_editable,
2737                                                     (GdkEvent *)event,
2738                                                     path_string,
2739                                                     &background_area,
2740                                                     &cell_area, flags))
2741                 {
2742                   if (cell_editable != NULL)
2743                     {
2744                       gint left, right;
2745                       GdkRectangle area;
2746
2747                       area = cell_area;
2748                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2749
2750                       area.x += left;
2751                       area.width -= right + left;
2752
2753                       gtk_tree_view_real_start_editing (tree_view,
2754                                                         column,
2755                                                         path,
2756                                                         cell_editable,
2757                                                         &area,
2758                                                         (GdkEvent *)event,
2759                                                         flags);
2760                       g_free (path_string);
2761                       gtk_tree_path_free (path);
2762                       gtk_tree_path_free (anchor);
2763                       return TRUE;
2764                     }
2765                   column_handled_click = TRUE;
2766                 }
2767               g_free (path_string);
2768             }
2769           if (anchor)
2770             gtk_tree_path_free (anchor);
2771         }
2772
2773       /* select */
2774       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2775       pre_val = tree_view->priv->vadjustment->value;
2776
2777       /* we only handle selection modifications on the first button press
2778        */
2779       if (event->type == GDK_BUTTON_PRESS)
2780         {
2781           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2782             tree_view->priv->ctrl_pressed = TRUE;
2783           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2784             tree_view->priv->shift_pressed = TRUE;
2785
2786           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2787           if (focus_cell)
2788             gtk_tree_view_column_focus_cell (column, focus_cell);
2789
2790           if (event->state & GDK_CONTROL_MASK)
2791             {
2792               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2793               gtk_tree_view_real_toggle_cursor_row (tree_view);
2794             }
2795           else if (event->state & GDK_SHIFT_MASK)
2796             {
2797               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2798               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2799             }
2800           else
2801             {
2802               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2803             }
2804
2805           tree_view->priv->ctrl_pressed = FALSE;
2806           tree_view->priv->shift_pressed = FALSE;
2807         }
2808
2809       /* the treeview may have been scrolled because of _set_cursor,
2810        * correct here
2811        */
2812
2813       aft_val = tree_view->priv->vadjustment->value;
2814       dval = pre_val - aft_val;
2815
2816       cell_area.y += dval;
2817       background_area.y += dval;
2818
2819       /* Save press to possibly begin a drag
2820        */
2821       if (!column_handled_click &&
2822           !tree_view->priv->in_grab &&
2823           tree_view->priv->pressed_button < 0)
2824         {
2825           tree_view->priv->pressed_button = event->button;
2826           tree_view->priv->press_start_x = event->x;
2827           tree_view->priv->press_start_y = event->y;
2828
2829           if (tree_view->priv->rubber_banding_enable
2830               && !node_selected
2831               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2832             {
2833               tree_view->priv->press_start_y += tree_view->priv->dy;
2834               tree_view->priv->rubber_band_x = event->x;
2835               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2836               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2837
2838               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2839                 tree_view->priv->rubber_band_ctrl = TRUE;
2840               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2841                 tree_view->priv->rubber_band_shift = TRUE;
2842             }
2843         }
2844
2845       /* Test if a double click happened on the same row. */
2846       if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
2847         {
2848           int double_click_time, double_click_distance;
2849
2850           g_object_get (gtk_settings_get_default (),
2851                         "gtk-double-click-time", &double_click_time,
2852                         "gtk-double-click-distance", &double_click_distance,
2853                         NULL);
2854
2855           /* Same conditions as _gdk_event_button_generate */
2856           if (tree_view->priv->last_button_x != -1 &&
2857               (event->time < tree_view->priv->last_button_time + double_click_time) &&
2858               (ABS (event->x - tree_view->priv->last_button_x) <= double_click_distance) &&
2859               (ABS (event->y - tree_view->priv->last_button_y) <= double_click_distance))
2860             {
2861               /* We do no longer compare paths of this row and the
2862                * row clicked previously.  We use the double click
2863                * distance to decide whether this is a valid click,
2864                * allowing the mouse to slightly move over another row.
2865                */
2866               row_double_click = TRUE;
2867
2868               tree_view->priv->last_button_time = 0;
2869               tree_view->priv->last_button_x = -1;
2870               tree_view->priv->last_button_y = -1;
2871             }
2872           else
2873             {
2874               tree_view->priv->last_button_time = event->time;
2875               tree_view->priv->last_button_x = event->x;
2876               tree_view->priv->last_button_y = event->y;
2877             }
2878         }
2879
2880       if (row_double_click)
2881         {
2882           gtk_grab_remove (widget);
2883           gtk_tree_view_row_activated (tree_view, path, column);
2884
2885           if (tree_view->priv->pressed_button == event->button)
2886             tree_view->priv->pressed_button = -1;
2887         }
2888
2889       gtk_tree_path_free (path);
2890
2891       /* If we activated the row through a double click we don't want to grab
2892        * focus back, as moving focus to another widget is pretty common.
2893        */
2894       if (!row_double_click)
2895         grab_focus_and_unset_draw_keyfocus (tree_view);
2896
2897       return TRUE;
2898     }
2899
2900   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2901    */
2902   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2903     {
2904       column = list->data;
2905       if (event->window == column->window &&
2906           column->resizable &&
2907           column->window)
2908         {
2909           gpointer drag_data;
2910
2911           if (event->type == GDK_2BUTTON_PRESS &&
2912               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2913             {
2914               column->use_resized_width = FALSE;
2915               _gtk_tree_view_column_autosize (tree_view, column);
2916               return TRUE;
2917             }
2918
2919           if (gdk_pointer_grab (column->window, FALSE,
2920                                 GDK_POINTER_MOTION_HINT_MASK |
2921                                 GDK_BUTTON1_MOTION_MASK |
2922                                 GDK_BUTTON_RELEASE_MASK,
2923                                 NULL, NULL, event->time))
2924             return FALSE;
2925
2926           gtk_grab_add (widget);
2927           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2928           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2929
2930           /* block attached dnd signal handler */
2931           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2932           if (drag_data)
2933             g_signal_handlers_block_matched (widget,
2934                                              G_SIGNAL_MATCH_DATA,
2935                                              0, 0, NULL, NULL,
2936                                              drag_data);
2937
2938           tree_view->priv->drag_pos = i;
2939           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2940
2941           if (!gtk_widget_has_focus (widget))
2942             gtk_widget_grab_focus (widget);
2943
2944           return TRUE;
2945         }
2946     }
2947   return FALSE;
2948 }
2949
2950 /* GtkWidget::button_release_event helper */
2951 static gboolean
2952 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2953                                           GdkEventButton *event)
2954 {
2955   GtkTreeView *tree_view;
2956   GList *l;
2957   gboolean rtl;
2958
2959   tree_view = GTK_TREE_VIEW (widget);
2960
2961   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2962   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2963   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2964
2965   /* Move the button back */
2966   g_object_ref (tree_view->priv->drag_column->button);
2967   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2968   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2969   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2970   g_object_unref (tree_view->priv->drag_column->button);
2971   gtk_widget_queue_resize (widget);
2972   if (tree_view->priv->drag_column->resizable)
2973     {
2974       gdk_window_raise (tree_view->priv->drag_column->window);
2975       gdk_window_show (tree_view->priv->drag_column->window);
2976     }
2977   else
2978     gdk_window_hide (tree_view->priv->drag_column->window);
2979
2980   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2981
2982   if (rtl)
2983     {
2984       if (tree_view->priv->cur_reorder &&
2985           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2986         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2987                                          tree_view->priv->cur_reorder->right_column);
2988     }
2989   else
2990     {
2991       if (tree_view->priv->cur_reorder &&
2992           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2993         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2994                                          tree_view->priv->cur_reorder->left_column);
2995     }
2996   tree_view->priv->drag_column = NULL;
2997   gdk_window_hide (tree_view->priv->drag_window);
2998
2999   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
3000     g_slice_free (GtkTreeViewColumnReorder, l->data);
3001   g_list_free (tree_view->priv->column_drag_info);
3002   tree_view->priv->column_drag_info = NULL;
3003   tree_view->priv->cur_reorder = NULL;
3004
3005   if (tree_view->priv->drag_highlight_window)
3006     gdk_window_hide (tree_view->priv->drag_highlight_window);
3007
3008   /* Reset our flags */
3009   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
3010   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
3011
3012   return TRUE;
3013 }
3014
3015 /* GtkWidget::button_release_event helper */
3016 static gboolean
3017 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
3018                                             GdkEventButton *event)
3019 {
3020   GtkTreeView *tree_view;
3021   gpointer drag_data;
3022
3023   tree_view = GTK_TREE_VIEW (widget);
3024
3025   tree_view->priv->drag_pos = -1;
3026
3027   /* unblock attached dnd signal handler */
3028   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
3029   if (drag_data)
3030     g_signal_handlers_unblock_matched (widget,
3031                                        G_SIGNAL_MATCH_DATA,
3032                                        0, 0, NULL, NULL,
3033                                        drag_data);
3034
3035   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
3036   gtk_grab_remove (widget);
3037   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
3038                               event->time);
3039   return TRUE;
3040 }
3041
3042 static gboolean
3043 gtk_tree_view_button_release (GtkWidget      *widget,
3044                               GdkEventButton *event)
3045 {
3046   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3047
3048   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3049     return gtk_tree_view_button_release_drag_column (widget, event);
3050
3051   if (tree_view->priv->rubber_band_status)
3052     gtk_tree_view_stop_rubber_band (tree_view);
3053
3054   if (tree_view->priv->pressed_button == event->button)
3055     tree_view->priv->pressed_button = -1;
3056
3057   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3058     return gtk_tree_view_button_release_column_resize (widget, event);
3059
3060   if (tree_view->priv->button_pressed_node == NULL)
3061     return FALSE;
3062
3063   if (event->button == 1)
3064     {
3065       gtk_grab_remove (widget);
3066       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3067           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3068         {
3069           GtkTreePath *path = NULL;
3070
3071           path = _gtk_tree_view_find_path (tree_view,
3072                                            tree_view->priv->button_pressed_tree,
3073                                            tree_view->priv->button_pressed_node);
3074           /* Actually activate the node */
3075           if (tree_view->priv->button_pressed_node->children == NULL)
3076             gtk_tree_view_real_expand_row (tree_view, path,
3077                                            tree_view->priv->button_pressed_tree,
3078                                            tree_view->priv->button_pressed_node,
3079                                            FALSE, TRUE);
3080           else
3081             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3082                                              tree_view->priv->button_pressed_tree,
3083                                              tree_view->priv->button_pressed_node, TRUE);
3084           gtk_tree_path_free (path);
3085         }
3086
3087       tree_view->priv->button_pressed_tree = NULL;
3088       tree_view->priv->button_pressed_node = NULL;
3089     }
3090
3091   return TRUE;
3092 }
3093
3094 static gboolean
3095 gtk_tree_view_grab_broken (GtkWidget          *widget,
3096                            GdkEventGrabBroken *event)
3097 {
3098   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3099
3100   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3101     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3102
3103   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3104     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3105
3106   return TRUE;
3107 }
3108
3109 #if 0
3110 static gboolean
3111 gtk_tree_view_configure (GtkWidget *widget,
3112                          GdkEventConfigure *event)
3113 {
3114   GtkTreeView *tree_view;
3115
3116   tree_view = GTK_TREE_VIEW (widget);
3117   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3118
3119   return FALSE;
3120 }
3121 #endif
3122
3123 /* GtkWidget::motion_event function set.
3124  */
3125
3126 static gboolean
3127 coords_are_over_arrow (GtkTreeView *tree_view,
3128                        GtkRBTree   *tree,
3129                        GtkRBNode   *node,
3130                        /* these are in bin window coords */
3131                        gint         x,
3132                        gint         y)
3133 {
3134   GdkRectangle arrow;
3135   gint x2;
3136
3137   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
3138     return FALSE;
3139
3140   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3141     return FALSE;
3142
3143   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3144
3145   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3146
3147   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3148
3149   arrow.width = x2 - arrow.x;
3150
3151   return (x >= arrow.x &&
3152           x < (arrow.x + arrow.width) &&
3153           y >= arrow.y &&
3154           y < (arrow.y + arrow.height));
3155 }
3156
3157 static gboolean
3158 auto_expand_timeout (gpointer data)
3159 {
3160   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3161   GtkTreePath *path;
3162
3163   if (tree_view->priv->prelight_node)
3164     {
3165       path = _gtk_tree_view_find_path (tree_view,
3166                                        tree_view->priv->prelight_tree,
3167                                        tree_view->priv->prelight_node);
3168
3169       if (tree_view->priv->prelight_node->children)
3170         gtk_tree_view_collapse_row (tree_view, path);
3171       else
3172         gtk_tree_view_expand_row (tree_view, path, FALSE);
3173
3174       gtk_tree_path_free (path);
3175     }
3176
3177   tree_view->priv->auto_expand_timeout = 0;
3178
3179   return FALSE;
3180 }
3181
3182 static void
3183 remove_auto_expand_timeout (GtkTreeView *tree_view)
3184 {
3185   if (tree_view->priv->auto_expand_timeout != 0)
3186     {
3187       g_source_remove (tree_view->priv->auto_expand_timeout);
3188       tree_view->priv->auto_expand_timeout = 0;
3189     }
3190 }
3191
3192 static void
3193 do_prelight (GtkTreeView *tree_view,
3194              GtkRBTree   *tree,
3195              GtkRBNode   *node,
3196              /* these are in bin_window coords */
3197              gint         x,
3198              gint         y)
3199 {
3200   if (tree_view->priv->prelight_tree == tree &&
3201       tree_view->priv->prelight_node == node)
3202     {
3203       /*  We are still on the same node,
3204           but we might need to take care of the arrow  */
3205
3206       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3207         {
3208           gboolean over_arrow;
3209           gboolean flag_set;
3210
3211           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3212           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3213                                              GTK_TREE_VIEW_ARROW_PRELIT);
3214
3215           if (over_arrow != flag_set)
3216             {
3217               if (over_arrow)
3218                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3219                                         GTK_TREE_VIEW_ARROW_PRELIT);
3220               else
3221                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3222                                           GTK_TREE_VIEW_ARROW_PRELIT);
3223
3224               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3225             }
3226         }
3227
3228       return;
3229     }
3230
3231   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3232     {
3233       /*  Unprelight the old node and arrow  */
3234
3235       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3236                              GTK_RBNODE_IS_PRELIT);
3237
3238       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3239           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3240         {
3241           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3242
3243           gtk_tree_view_draw_arrow (tree_view,
3244                                     tree_view->priv->prelight_tree,
3245                                     tree_view->priv->prelight_node,
3246                                     x,
3247                                     y);
3248         }
3249
3250       _gtk_tree_view_queue_draw_node (tree_view,
3251                                       tree_view->priv->prelight_tree,
3252                                       tree_view->priv->prelight_node,
3253                                       NULL);
3254     }
3255
3256
3257   if (tree_view->priv->hover_expand)
3258     remove_auto_expand_timeout (tree_view);
3259
3260   /*  Set the new prelight values  */
3261   tree_view->priv->prelight_node = node;
3262   tree_view->priv->prelight_tree = tree;
3263
3264   if (!node || !tree)
3265     return;
3266
3267   /*  Prelight the new node and arrow  */
3268
3269   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3270       && coords_are_over_arrow (tree_view, tree, node, x, y))
3271     {
3272       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3273
3274       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3275     }
3276
3277   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3278
3279   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3280
3281   if (tree_view->priv->hover_expand)
3282     {
3283       tree_view->priv->auto_expand_timeout =
3284         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3285     }
3286 }
3287
3288 static void
3289 prelight_or_select (GtkTreeView *tree_view,
3290                     GtkRBTree   *tree,
3291                     GtkRBNode   *node,
3292                     /* these are in bin_window coords */
3293                     gint         x,
3294                     gint         y)
3295 {
3296   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3297
3298   if (tree_view->priv->hover_selection &&
3299       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3300       !(tree_view->priv->edited_column &&
3301         tree_view->priv->edited_column->editable_widget))
3302     {
3303       if (node)
3304         {
3305           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3306             {
3307               GtkTreePath *path;
3308
3309               path = _gtk_tree_view_find_path (tree_view, tree, node);
3310               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3311               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3312                 {
3313                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3314                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3315                 }
3316               gtk_tree_path_free (path);
3317             }
3318         }
3319
3320       else if (mode == GTK_SELECTION_SINGLE)
3321         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3322     }
3323
3324     do_prelight (tree_view, tree, node, x, y);
3325 }
3326
3327 static void
3328 ensure_unprelighted (GtkTreeView *tree_view)
3329 {
3330   do_prelight (tree_view,
3331                NULL, NULL,
3332                -1000, -1000); /* coords not possibly over an arrow */
3333
3334   g_assert (tree_view->priv->prelight_node == NULL);
3335 }
3336
3337 static void
3338 update_prelight (GtkTreeView *tree_view,
3339                  gint         x,
3340                  gint         y)
3341 {
3342   int new_y;
3343   GtkRBTree *tree;
3344   GtkRBNode *node;
3345
3346   if (tree_view->priv->tree == NULL)
3347     return;
3348
3349   if (x == -10000)
3350     {
3351       ensure_unprelighted (tree_view);
3352       return;
3353     }
3354
3355   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y);
3356   if (new_y < 0)
3357     new_y = 0;
3358
3359   _gtk_rbtree_find_offset (tree_view->priv->tree,
3360                            new_y, &tree, &node);
3361
3362   if (node)
3363     prelight_or_select (tree_view, tree, node, x, y);
3364 }
3365
3366
3367
3368
3369 /* Our motion arrow is either a box (in the case of the original spot)
3370  * or an arrow.  It is expander_size wide.
3371  */
3372 /*
3373  * 11111111111111
3374  * 01111111111110
3375  * 00111111111100
3376  * 00011111111000
3377  * 00001111110000
3378  * 00000111100000
3379  * 00000111100000
3380  * 00000111100000
3381  * ~ ~ ~ ~ ~ ~ ~
3382  * 00000111100000
3383  * 00000111100000
3384  * 00000111100000
3385  * 00001111110000
3386  * 00011111111000
3387  * 00111111111100
3388  * 01111111111110
3389  * 11111111111111
3390  */
3391
3392 static void
3393 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3394 {
3395   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3396   GtkWidget *widget = GTK_WIDGET (tree_view);
3397   GdkBitmap *mask = NULL;
3398   gint x;
3399   gint y;
3400   gint width;
3401   gint height;
3402   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3403   GdkWindowAttr attributes;
3404   guint attributes_mask;
3405
3406   if (!reorder ||
3407       reorder->left_column == tree_view->priv->drag_column ||
3408       reorder->right_column == tree_view->priv->drag_column)
3409     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3410   else if (reorder->left_column || reorder->right_column)
3411     {
3412       GdkRectangle visible_rect;
3413       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3414       if (reorder->left_column)
3415         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
3416       else
3417         x = reorder->right_column->button->allocation.x;
3418
3419       if (x < visible_rect.x)
3420         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3421       else if (x > visible_rect.x + visible_rect.width)
3422         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3423       else
3424         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3425     }
3426
3427   /* We want to draw the rectangle over the initial location. */
3428   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3429     {
3430       GdkGC *gc;
3431       GdkColor col;
3432
3433       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3434         {
3435           if (tree_view->priv->drag_highlight_window)
3436             {
3437               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3438                                         NULL);
3439               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3440             }
3441
3442           attributes.window_type = GDK_WINDOW_CHILD;
3443           attributes.wclass = GDK_INPUT_OUTPUT;
3444           attributes.x = tree_view->priv->drag_column_x;
3445           attributes.y = 0;
3446           width = attributes.width = tree_view->priv->drag_column->button->allocation.width;
3447           height = attributes.height = tree_view->priv->drag_column->button->allocation.height;
3448           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3449           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3450           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3451           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3452           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3453           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3454
3455           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3456           gc = gdk_gc_new (mask);
3457           col.pixel = 1;
3458           gdk_gc_set_foreground (gc, &col);
3459           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3460           col.pixel = 0;
3461           gdk_gc_set_foreground(gc, &col);
3462           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
3463           g_object_unref (gc);
3464
3465           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3466                                          mask, 0, 0);
3467           if (mask) g_object_unref (mask);
3468           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3469         }
3470     }
3471   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3472     {
3473       gint i, j = 1;
3474       GdkGC *gc;
3475       GdkColor col;
3476
3477       width = tree_view->priv->expander_size;
3478
3479       /* Get x, y, width, height of arrow */
3480       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3481       if (reorder->left_column)
3482         {
3483           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
3484           height = reorder->left_column->button->allocation.height;
3485         }
3486       else
3487         {
3488           x += reorder->right_column->button->allocation.x - width/2;
3489           height = reorder->right_column->button->allocation.height;
3490         }
3491       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3492       height += tree_view->priv->expander_size;
3493
3494       /* Create the new window */
3495       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3496         {
3497           if (tree_view->priv->drag_highlight_window)
3498             {
3499               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3500                                         NULL);
3501               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3502             }
3503
3504           attributes.window_type = GDK_WINDOW_TEMP;
3505           attributes.wclass = GDK_INPUT_OUTPUT;
3506           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3507           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3508           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3509           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3510           attributes.x = x;
3511           attributes.y = y;
3512           attributes.width = width;
3513           attributes.height = height;
3514           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3515                                                                    &attributes, attributes_mask);
3516           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3517
3518           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3519           gc = gdk_gc_new (mask);
3520           col.pixel = 1;
3521           gdk_gc_set_foreground (gc, &col);
3522           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3523
3524           /* Draw the 2 arrows as per above */
3525           col.pixel = 0;
3526           gdk_gc_set_foreground (gc, &col);
3527           for (i = 0; i < width; i ++)
3528             {
3529               if (i == (width/2 - 1))
3530                 continue;
3531               gdk_draw_line (mask, gc, i, j, i, height - j);
3532               if (i < (width/2 - 1))
3533                 j++;
3534               else
3535                 j--;
3536             }
3537           g_object_unref (gc);
3538           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3539                                          mask, 0, 0);
3540           if (mask) g_object_unref (mask);
3541         }
3542
3543       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3544       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3545     }
3546   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3547            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3548     {
3549       gint i, j = 1;
3550       GdkGC *gc;
3551       GdkColor col;
3552
3553       width = tree_view->priv->expander_size;
3554
3555       /* Get x, y, width, height of arrow */
3556       width = width/2; /* remember, the arrow only takes half the available width */
3557       gdk_window_get_origin (widget->window, &x, &y);
3558       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3559         x += widget->allocation.width - width;
3560
3561       if (reorder->left_column)
3562         height = reorder->left_column->button->allocation.height;
3563       else
3564         height = reorder->right_column->button->allocation.height;
3565
3566       y -= tree_view->priv->expander_size;
3567       height += 2*tree_view->priv->expander_size;
3568
3569       /* Create the new window */
3570       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3571           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3572         {
3573           if (tree_view->priv->drag_highlight_window)
3574             {
3575               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3576                                         NULL);
3577               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3578             }
3579
3580           attributes.window_type = GDK_WINDOW_TEMP;
3581           attributes.wclass = GDK_INPUT_OUTPUT;
3582           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3583           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3584           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3585           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3586           attributes.x = x;
3587           attributes.y = y;
3588           attributes.width = width;
3589           attributes.height = height;
3590           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3591           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3592
3593           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3594           gc = gdk_gc_new (mask);
3595           col.pixel = 1;
3596           gdk_gc_set_foreground (gc, &col);
3597           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3598
3599           /* Draw the 2 arrows as per above */
3600           col.pixel = 0;
3601           gdk_gc_set_foreground (gc, &col);
3602           j = tree_view->priv->expander_size;
3603           for (i = 0; i < width; i ++)
3604             {
3605               gint k;
3606               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3607                 k = width - i - 1;
3608               else
3609                 k = i;
3610               gdk_draw_line (mask, gc, k, j, k, height - j);
3611               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
3612               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
3613               j--;
3614             }
3615           g_object_unref (gc);
3616           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3617                                          mask, 0, 0);
3618           if (mask) g_object_unref (mask);
3619         }
3620
3621       tree_view->priv->drag_column_window_state = arrow_type;
3622       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3623    }
3624   else
3625     {
3626       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3627       gdk_window_hide (tree_view->priv->drag_highlight_window);
3628       return;
3629     }
3630
3631   gdk_window_show (tree_view->priv->drag_highlight_window);
3632   gdk_window_raise (tree_view->priv->drag_highlight_window);
3633 }
3634
3635 static gboolean
3636 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3637                                     GdkEventMotion *event)
3638 {
3639   gint x;
3640   gint new_width;
3641   GtkTreeViewColumn *column;
3642   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3643
3644   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3645
3646   if (event->is_hint || event->window != widget->window)
3647     gtk_widget_get_pointer (widget, &x, NULL);
3648   else
3649     x = event->x;
3650
3651   if (tree_view->priv->hadjustment)
3652     x += tree_view->priv->hadjustment->value;
3653
3654   new_width = gtk_tree_view_new_column_width (tree_view,
3655                                               tree_view->priv->drag_pos, &x);
3656   if (x != tree_view->priv->x_drag &&
3657       (new_width != column->fixed_width))
3658     {
3659       column->use_resized_width = TRUE;
3660       column->resized_width = new_width;
3661       if (column->expand)
3662         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3663       gtk_widget_queue_resize (widget);
3664     }
3665
3666   return FALSE;
3667 }
3668
3669
3670 static void
3671 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3672 {
3673   GtkTreeViewColumnReorder *reorder = NULL;
3674   GList *list;
3675   gint mouse_x;
3676
3677   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3678   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3679     {
3680       reorder = (GtkTreeViewColumnReorder *) list->data;
3681       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3682         break;
3683       reorder = NULL;
3684     }
3685
3686   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3687       return;*/
3688
3689   tree_view->priv->cur_reorder = reorder;
3690   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3691 }
3692
3693 static void
3694 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3695 {
3696   GdkRectangle visible_rect;
3697   gint y;
3698   gint offset;
3699
3700   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3701   y += tree_view->priv->dy;
3702
3703   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3704
3705   /* see if we are near the edge. */
3706   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3707   if (offset > 0)
3708     {
3709       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3710       if (offset < 0)
3711         return;
3712     }
3713
3714   gtk_adjustment_set_value (tree_view->priv->vadjustment,
3715                             MAX (tree_view->priv->vadjustment->value + offset, 0.0));
3716 }
3717
3718 static gboolean
3719 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3720 {
3721   GdkRectangle visible_rect;
3722   gint x;
3723   gint offset;
3724
3725   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3726
3727   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3728
3729   /* See if we are near the edge. */
3730   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3731   if (offset > 0)
3732     {
3733       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3734       if (offset < 0)
3735         return TRUE;
3736     }
3737   offset = offset/3;
3738
3739   gtk_adjustment_set_value (tree_view->priv->hadjustment,
3740                             MAX (tree_view->priv->hadjustment->value + offset, 0.0));
3741
3742   return TRUE;
3743
3744 }
3745
3746 static gboolean
3747 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3748                                   GdkEventMotion *event)
3749 {
3750   GtkTreeView *tree_view = (GtkTreeView *) widget;
3751   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3752   gint x, y;
3753
3754   /* Sanity Check */
3755   if ((column == NULL) ||
3756       (event->window != tree_view->priv->drag_window))
3757     return FALSE;
3758
3759   /* Handle moving the header */
3760   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3761   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3762              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3763   gdk_window_move (tree_view->priv->drag_window, x, y);
3764
3765   /* autoscroll, if needed */
3766   gtk_tree_view_horizontal_autoscroll (tree_view);
3767   /* Update the current reorder position and arrow; */
3768   gtk_tree_view_update_current_reorder (tree_view);
3769
3770   return TRUE;
3771 }
3772
3773 static void
3774 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3775 {
3776   remove_scroll_timeout (tree_view);
3777   gtk_grab_remove (GTK_WIDGET (tree_view));
3778
3779   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3780     {
3781       GtkTreePath *tmp_path;
3782
3783       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3784
3785       /* The anchor path should be set to the start path */
3786       tmp_path = _gtk_tree_view_find_path (tree_view,
3787                                            tree_view->priv->rubber_band_start_tree,
3788                                            tree_view->priv->rubber_band_start_node);
3789
3790       if (tree_view->priv->anchor)
3791         gtk_tree_row_reference_free (tree_view->priv->anchor);
3792
3793       tree_view->priv->anchor =
3794         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3795                                           tree_view->priv->model,
3796                                           tmp_path);
3797
3798       gtk_tree_path_free (tmp_path);
3799
3800       /* ... and the cursor to the end path */
3801       tmp_path = _gtk_tree_view_find_path (tree_view,
3802                                            tree_view->priv->rubber_band_end_tree,
3803                                            tree_view->priv->rubber_band_end_node);
3804       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3805       gtk_tree_path_free (tmp_path);
3806
3807       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3808     }
3809
3810   /* Clear status variables */
3811   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3812   tree_view->priv->rubber_band_shift = 0;
3813   tree_view->priv->rubber_band_ctrl = 0;
3814
3815   tree_view->priv->rubber_band_start_node = NULL;
3816   tree_view->priv->rubber_band_start_tree = NULL;
3817   tree_view->priv->rubber_band_end_node = NULL;
3818   tree_view->priv->rubber_band_end_tree = NULL;
3819 }
3820
3821 static void
3822 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3823                                                  GtkRBTree   *start_tree,
3824                                                  GtkRBNode   *start_node,
3825                                                  GtkRBTree   *end_tree,
3826                                                  GtkRBNode   *end_node,
3827                                                  gboolean     select,
3828                                                  gboolean     skip_start,
3829                                                  gboolean     skip_end)
3830 {
3831   if (start_node == end_node)
3832     return;
3833
3834   /* We skip the first node and jump inside the loop */
3835   if (skip_start)
3836     goto skip_first;
3837
3838   do
3839     {
3840       /* Small optimization by assuming insensitive nodes are never
3841        * selected.
3842        */
3843       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3844         {
3845           GtkTreePath *path;
3846           gboolean selectable;
3847
3848           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3849           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3850           gtk_tree_path_free (path);
3851
3852           if (!selectable)
3853             goto node_not_selectable;
3854         }
3855
3856       if (select)
3857         {
3858           if (tree_view->priv->rubber_band_shift)
3859             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3860           else if (tree_view->priv->rubber_band_ctrl)
3861             {
3862               /* Toggle the selection state */
3863               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3864                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3865               else
3866                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3867             }
3868           else
3869             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3870         }
3871       else
3872         {
3873           /* Mirror the above */
3874           if (tree_view->priv->rubber_band_shift)
3875             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3876           else if (tree_view->priv->rubber_band_ctrl)
3877             {
3878               /* Toggle the selection state */
3879               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3880                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3881               else
3882                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3883             }
3884           else
3885             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3886         }
3887
3888       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3889
3890 node_not_selectable:
3891       if (start_node == end_node)
3892         break;
3893
3894 skip_first:
3895
3896       if (start_node->children)
3897         {
3898           start_tree = start_node->children;
3899           start_node = start_tree->root;
3900           while (start_node->left != start_tree->nil)
3901             start_node = start_node->left;
3902         }
3903       else
3904         {
3905           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3906
3907           if (!start_tree)
3908             /* Ran out of tree */
3909             break;
3910         }
3911
3912       if (skip_end && start_node == end_node)
3913         break;
3914     }
3915   while (TRUE);
3916 }
3917
3918 static void
3919 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3920 {
3921   GtkRBTree *start_tree, *end_tree;
3922   GtkRBNode *start_node, *end_node;
3923
3924   _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);
3925   _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);
3926
3927   /* Handle the start area first */
3928   if (!tree_view->priv->rubber_band_start_node)
3929     {
3930       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3931                                                        start_tree,
3932                                                        start_node,
3933                                                        end_tree,
3934                                                        end_node,
3935                                                        TRUE,
3936                                                        FALSE,
3937                                                        FALSE);
3938     }
3939   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3940            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3941     {
3942       /* New node is above the old one; selection became bigger */
3943       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3944                                                        start_tree,
3945                                                        start_node,
3946                                                        tree_view->priv->rubber_band_start_tree,
3947                                                        tree_view->priv->rubber_band_start_node,
3948                                                        TRUE,
3949                                                        FALSE,
3950                                                        TRUE);
3951     }
3952   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3953            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3954     {
3955       /* New node is below the old one; selection became smaller */
3956       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3957                                                        tree_view->priv->rubber_band_start_tree,
3958                                                        tree_view->priv->rubber_band_start_node,
3959                                                        start_tree,
3960                                                        start_node,
3961                                                        FALSE,
3962                                                        FALSE,
3963                                                        TRUE);
3964     }
3965
3966   tree_view->priv->rubber_band_start_tree = start_tree;
3967   tree_view->priv->rubber_band_start_node = start_node;
3968
3969   /* Next, handle the end area */
3970   if (!tree_view->priv->rubber_band_end_node)
3971     {
3972       /* In the event this happens, start_node was also NULL; this case is
3973        * handled above.
3974        */
3975     }
3976   else if (!end_node)
3977     {
3978       /* Find the last node in the tree */
3979       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3980                                &end_tree, &end_node);
3981
3982       /* Selection reached end of the tree */
3983       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3984                                                        tree_view->priv->rubber_band_end_tree,
3985                                                        tree_view->priv->rubber_band_end_node,
3986                                                        end_tree,
3987                                                        end_node,
3988                                                        TRUE,
3989                                                        TRUE,
3990                                                        FALSE);
3991     }
3992   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3993            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3994     {
3995       /* New node is below the old one; selection became bigger */
3996       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3997                                                        tree_view->priv->rubber_band_end_tree,
3998                                                        tree_view->priv->rubber_band_end_node,
3999                                                        end_tree,
4000                                                        end_node,
4001                                                        TRUE,
4002                                                        TRUE,
4003                                                        FALSE);
4004     }
4005   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
4006            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
4007     {
4008       /* New node is above the old one; selection became smaller */
4009       gtk_tree_view_update_rubber_band_selection_range (tree_view,
4010                                                        end_tree,
4011                                                        end_node,
4012                                                        tree_view->priv->rubber_band_end_tree,
4013                                                        tree_view->priv->rubber_band_end_node,
4014                                                        FALSE,
4015                                                        TRUE,
4016                                                        FALSE);
4017     }
4018
4019   tree_view->priv->rubber_band_end_tree = end_tree;
4020   tree_view->priv->rubber_band_end_node = end_node;
4021 }
4022
4023 static void
4024 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
4025 {
4026   gint x, y;
4027   GdkRectangle old_area;
4028   GdkRectangle new_area;
4029   GdkRectangle common;
4030   GdkRegion *invalid_region;
4031
4032   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4033   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4034   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
4035   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
4036
4037   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
4038
4039   x = MAX (x, 0);
4040   y = MAX (y, 0) + tree_view->priv->dy;
4041
4042   new_area.x = MIN (tree_view->priv->press_start_x, x);
4043   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
4044   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
4045   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
4046
4047   invalid_region = cairo_region_create_rectangle (&old_area);
4048   cairo_region_union_rectangle (invalid_region, &new_area);
4049
4050   gdk_rectangle_intersect (&old_area, &new_area, &common);
4051   if (common.width > 2 && common.height > 2)
4052     {
4053       GdkRegion *common_region;
4054
4055       /* make sure the border is invalidated */
4056       common.x += 1;
4057       common.y += 1;
4058       common.width -= 2;
4059       common.height -= 2;
4060
4061       common_region = cairo_region_create_rectangle (&common);
4062
4063       cairo_region_subtract (invalid_region, common_region);
4064       cairo_region_destroy (common_region);
4065     }
4066
4067   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
4068
4069   cairo_region_destroy (invalid_region);
4070
4071   tree_view->priv->rubber_band_x = x;
4072   tree_view->priv->rubber_band_y = y;
4073
4074   gtk_tree_view_update_rubber_band_selection (tree_view);
4075 }
4076
4077 static void
4078 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
4079                                 GdkRectangle *area)
4080 {
4081   cairo_t *cr;
4082   GdkRectangle rect;
4083   GdkRectangle rubber_rect;
4084
4085   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4086   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4087   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4088   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4089
4090   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4091     return;
4092
4093   cr = gdk_cairo_create (tree_view->priv->bin_window);
4094   cairo_set_line_width (cr, 1.0);
4095
4096   cairo_set_source_rgba (cr,
4097                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4098                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4099                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
4100                          .25);
4101
4102   gdk_cairo_rectangle (cr, &rect);
4103   cairo_clip (cr);
4104   cairo_paint (cr);
4105
4106   cairo_set_source_rgb (cr,
4107                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4108                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4109                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
4110
4111   cairo_rectangle (cr,
4112                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4113                    rubber_rect.width - 1, rubber_rect.height - 1);
4114   cairo_stroke (cr);
4115
4116   cairo_destroy (cr);
4117 }
4118
4119 static gboolean
4120 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4121                                  GdkEventMotion *event)
4122 {
4123   GtkTreeView *tree_view;
4124   GtkRBTree *tree;
4125   GtkRBNode *node;
4126   gint new_y;
4127
4128   tree_view = (GtkTreeView *) widget;
4129
4130   if (tree_view->priv->tree == NULL)
4131     return FALSE;
4132
4133   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4134     {
4135       gtk_grab_add (GTK_WIDGET (tree_view));
4136       gtk_tree_view_update_rubber_band (tree_view);
4137
4138       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4139     }
4140   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4141     {
4142       gtk_tree_view_update_rubber_band (tree_view);
4143
4144       add_scroll_timeout (tree_view);
4145     }
4146
4147   /* only check for an initiated drag when a button is pressed */
4148   if (tree_view->priv->pressed_button >= 0
4149       && !tree_view->priv->rubber_band_status)
4150     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4151
4152   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4153   if (new_y < 0)
4154     new_y = 0;
4155
4156   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4157
4158   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4159   if ((tree_view->priv->button_pressed_node != NULL) &&
4160       (tree_view->priv->button_pressed_node != node))
4161     node = NULL;
4162
4163   tree_view->priv->event_last_x = event->x;
4164   tree_view->priv->event_last_y = event->y;
4165
4166   prelight_or_select (tree_view, tree, node, event->x, event->y);
4167
4168   return TRUE;
4169 }
4170
4171 static gboolean
4172 gtk_tree_view_motion (GtkWidget      *widget,
4173                       GdkEventMotion *event)
4174 {
4175   GtkTreeView *tree_view;
4176
4177   tree_view = (GtkTreeView *) widget;
4178
4179   /* Resizing a column */
4180   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4181     return gtk_tree_view_motion_resize_column (widget, event);
4182
4183   /* Drag column */
4184   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4185     return gtk_tree_view_motion_drag_column (widget, event);
4186
4187   /* Sanity check it */
4188   if (event->window == tree_view->priv->bin_window)
4189     return gtk_tree_view_motion_bin_window (widget, event);
4190
4191   return FALSE;
4192 }
4193
4194 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4195  * the tree is empty.
4196  */
4197 static void
4198 invalidate_empty_focus (GtkTreeView *tree_view)
4199 {
4200   GdkRectangle area;
4201
4202   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
4203     return;
4204
4205   area.x = 0;
4206   area.y = 0;
4207   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4208   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4209 }
4210
4211 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4212  * is empty.
4213  */
4214 static void
4215 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4216 {
4217   GtkWidget *widget = GTK_WIDGET (tree_view);
4218   gint w, h;
4219
4220   if (!gtk_widget_has_focus (widget))
4221     return;
4222
4223   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4224
4225   w -= 2;
4226   h -= 2;
4227
4228   if (w > 0 && h > 0)
4229     gtk_paint_focus (gtk_widget_get_style (widget),
4230                      tree_view->priv->bin_window,
4231                      gtk_widget_get_state (widget),
4232                      clip_area,
4233                      widget,
4234                      NULL,
4235                      1, 1, w, h);
4236 }
4237
4238 static void
4239 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4240                                GdkEventExpose *event,
4241                                gint            n_visible_columns)
4242 {
4243   GList *list = tree_view->priv->columns;
4244   gint i = 0;
4245   gint current_x = 0;
4246
4247   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4248       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4249     return;
4250
4251   /* Only draw the lines for visible rows and columns */
4252   for (list = tree_view->priv->columns; list; list = list->next, i++)
4253     {
4254       GtkTreeViewColumn *column = list->data;
4255
4256       /* We don't want a line for the last column */
4257       if (i == n_visible_columns - 1)
4258         break;
4259
4260       if (! column->visible)
4261         continue;
4262
4263       current_x += column->width;
4264
4265       gdk_draw_line (event->window,
4266                      tree_view->priv->grid_line_gc,
4267                      current_x - 1, 0,
4268                      current_x - 1, tree_view->priv->height);
4269     }
4270 }
4271
4272 /* Warning: Very scary function.
4273  * Modify at your own risk
4274  *
4275  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4276  * FIXME: It's not...
4277  */
4278 static gboolean
4279 gtk_tree_view_bin_expose (GtkWidget      *widget,
4280                           GdkEventExpose *event)
4281 {
4282   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4283   GtkTreePath *path;
4284   GtkRBTree *tree;
4285   GList *list;
4286   GtkRBNode *node;
4287   GtkRBNode *cursor = NULL;
4288   GtkRBTree *cursor_tree = NULL;
4289   GtkRBNode *drag_highlight = NULL;
4290   GtkRBTree *drag_highlight_tree = NULL;
4291   GtkTreeIter iter;
4292   gint new_y;
4293   gint y_offset, cell_offset;
4294   gint max_height;
4295   gint depth;
4296   GdkRectangle background_area;
4297   GdkRectangle cell_area;
4298   guint flags;
4299   gint highlight_x;
4300   gint expander_cell_width;
4301   gint bin_window_width;
4302   gint bin_window_height;
4303   GtkTreePath *cursor_path;
4304   GtkTreePath *drag_dest_path;
4305   GList *first_column, *last_column;
4306   gint vertical_separator;
4307   gint horizontal_separator;
4308   gint focus_line_width;
4309   gboolean allow_rules;
4310   gboolean has_special_cell;
4311   gboolean rtl;
4312   gint n_visible_columns;
4313   gint pointer_x, pointer_y;
4314   gint grid_line_width;
4315   gboolean got_pointer = FALSE;
4316   gboolean row_ending_details;
4317   gboolean draw_vgrid_lines, draw_hgrid_lines;
4318
4319   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4320
4321   gtk_widget_style_get (widget,
4322                         "horizontal-separator", &horizontal_separator,
4323                         "vertical-separator", &vertical_separator,
4324                         "allow-rules", &allow_rules,
4325                         "focus-line-width", &focus_line_width,
4326                         "row-ending-details", &row_ending_details,
4327                         NULL);
4328
4329   if (tree_view->priv->tree == NULL)
4330     {
4331       draw_empty_focus (tree_view, &event->area);
4332       return TRUE;
4333     }
4334
4335   /* clip event->area to the visible area */
4336   if (event->area.height < 0)
4337     return TRUE;
4338
4339   validate_visible_area (tree_view);
4340
4341   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4342
4343   if (new_y < 0)
4344     new_y = 0;
4345   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4346   gdk_drawable_get_size (tree_view->priv->bin_window,
4347                          &bin_window_width, &bin_window_height);
4348
4349   if (tree_view->priv->height < bin_window_height)
4350     {
4351       gtk_paint_flat_box (widget->style,
4352                           event->window,
4353                           widget->state,
4354                           GTK_SHADOW_NONE,
4355                           &event->area,
4356                           widget,
4357                           "cell_even",
4358                           0, tree_view->priv->height,
4359                           bin_window_width,
4360                           bin_window_height - tree_view->priv->height);
4361     }
4362
4363   if (node == NULL)
4364     return TRUE;
4365
4366   /* find the path for the node */
4367   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4368                                    tree,
4369                                    node);
4370   gtk_tree_model_get_iter (tree_view->priv->model,
4371                            &iter,
4372                            path);
4373   depth = gtk_tree_path_get_depth (path);
4374   gtk_tree_path_free (path);
4375
4376   cursor_path = NULL;
4377   drag_dest_path = NULL;
4378
4379   if (tree_view->priv->cursor)
4380     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4381
4382   if (cursor_path)
4383     _gtk_tree_view_find_node (tree_view, cursor_path,
4384                               &cursor_tree, &cursor);
4385
4386   if (tree_view->priv->drag_dest_row)
4387     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4388
4389   if (drag_dest_path)
4390     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4391                               &drag_highlight_tree, &drag_highlight);
4392
4393   draw_vgrid_lines =
4394     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4395     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4396   draw_hgrid_lines =
4397     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4398     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4399
4400   if (draw_vgrid_lines || draw_hgrid_lines)
4401     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4402
4403   n_visible_columns = 0;
4404   for (list = tree_view->priv->columns; list; list = list->next)
4405     {
4406       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4407         continue;
4408       n_visible_columns ++;
4409     }
4410
4411   /* Find the last column */
4412   for (last_column = g_list_last (tree_view->priv->columns);
4413        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4414        last_column = last_column->prev)
4415     ;
4416
4417   /* and the first */
4418   for (first_column = g_list_first (tree_view->priv->columns);
4419        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4420        first_column = first_column->next)
4421     ;
4422
4423   /* Actually process the expose event.  To do this, we want to
4424    * start at the first node of the event, and walk the tree in
4425    * order, drawing each successive node.
4426    */
4427
4428   do
4429     {
4430       gboolean parity;
4431       gboolean is_separator = FALSE;
4432       gboolean is_first = FALSE;
4433       gboolean is_last = FALSE;
4434
4435       is_separator = row_is_separator (tree_view, &iter, NULL);
4436
4437       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4438
4439       cell_offset = 0;
4440       highlight_x = 0; /* should match x coord of first cell */
4441       expander_cell_width = 0;
4442
4443       background_area.y = y_offset + event->area.y;
4444       background_area.height = max_height;
4445
4446       flags = 0;
4447
4448       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4449         flags |= GTK_CELL_RENDERER_PRELIT;
4450
4451       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4452         flags |= GTK_CELL_RENDERER_SELECTED;
4453
4454       parity = _gtk_rbtree_node_find_parity (tree, node);
4455
4456       /* we *need* to set cell data on all cells before the call
4457        * to _has_special_cell, else _has_special_cell() does not
4458        * return a correct value.
4459        */
4460       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4461            list;
4462            list = (rtl ? list->prev : list->next))
4463         {
4464           GtkTreeViewColumn *column = list->data;
4465           gtk_tree_view_column_cell_set_cell_data (column,
4466                                                    tree_view->priv->model,
4467                                                    &iter,
4468                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4469                                                    node->children?TRUE:FALSE);
4470         }
4471
4472       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4473
4474       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4475            list;
4476            list = (rtl ? list->prev : list->next))
4477         {
4478           GtkTreeViewColumn *column = list->data;
4479           const gchar *detail = NULL;
4480           GtkStateType state;
4481
4482           if (!column->visible)
4483             continue;
4484
4485           if (cell_offset > event->area.x + event->area.width ||
4486               cell_offset + column->width < event->area.x)
4487             {
4488               cell_offset += column->width;
4489               continue;
4490             }
4491
4492           if (column->show_sort_indicator)
4493             flags |= GTK_CELL_RENDERER_SORTED;
4494           else
4495             flags &= ~GTK_CELL_RENDERER_SORTED;
4496
4497           if (cursor == node)
4498             flags |= GTK_CELL_RENDERER_FOCUSED;
4499           else
4500             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4501
4502           background_area.x = cell_offset;
4503           background_area.width = column->width;
4504
4505           cell_area = background_area;
4506           cell_area.y += vertical_separator / 2;
4507           cell_area.x += horizontal_separator / 2;
4508           cell_area.height -= vertical_separator;
4509           cell_area.width -= horizontal_separator;
4510
4511           if (draw_vgrid_lines)
4512             {
4513               if (list == first_column)
4514                 {
4515                   cell_area.width -= grid_line_width / 2;
4516                 }
4517               else if (list == last_column)
4518                 {
4519                   cell_area.x += grid_line_width / 2;
4520                   cell_area.width -= grid_line_width / 2;
4521                 }
4522               else
4523                 {
4524                   cell_area.x += grid_line_width / 2;
4525                   cell_area.width -= grid_line_width;
4526                 }
4527             }
4528
4529           if (draw_hgrid_lines)
4530             {
4531               cell_area.y += grid_line_width / 2;
4532               cell_area.height -= grid_line_width;
4533             }
4534
4535           if (cairo_region_contains_rectangle (event->region, &background_area) == CAIRO_REGION_OVERLAP_OUT)
4536             {
4537               cell_offset += column->width;
4538               continue;
4539             }
4540
4541           gtk_tree_view_column_cell_set_cell_data (column,
4542                                                    tree_view->priv->model,
4543                                                    &iter,
4544                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4545                                                    node->children?TRUE:FALSE);
4546
4547           /* Select the detail for drawing the cell.  relevant
4548            * factors are parity, sortedness, and whether to
4549            * display rules.
4550            */
4551           if (allow_rules && tree_view->priv->has_rules)
4552             {
4553               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4554                   n_visible_columns >= 3)
4555                 {
4556                   if (parity)
4557                     detail = "cell_odd_ruled_sorted";
4558                   else
4559                     detail = "cell_even_ruled_sorted";
4560                 }
4561               else
4562                 {
4563                   if (parity)
4564                     detail = "cell_odd_ruled";
4565                   else
4566                     detail = "cell_even_ruled";
4567                 }
4568             }
4569           else
4570             {
4571               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4572                   n_visible_columns >= 3)
4573                 {
4574                   if (parity)
4575                     detail = "cell_odd_sorted";
4576                   else
4577                     detail = "cell_even_sorted";
4578                 }
4579               else
4580                 {
4581                   if (parity)
4582                     detail = "cell_odd";
4583                   else
4584                     detail = "cell_even";
4585                 }
4586             }
4587
4588           g_assert (detail);
4589
4590           if (widget->state == GTK_STATE_INSENSITIVE)
4591             state = GTK_STATE_INSENSITIVE;
4592           else if (flags & GTK_CELL_RENDERER_SELECTED)
4593             state = GTK_STATE_SELECTED;
4594           else
4595             state = GTK_STATE_NORMAL;
4596
4597           /* Draw background */
4598           if (row_ending_details)
4599             {
4600               char new_detail[128];
4601
4602               is_first = (rtl ? !list->next : !list->prev);
4603               is_last = (rtl ? !list->prev : !list->next);
4604
4605               /* (I don't like the snprintfs either, but couldn't find a
4606                * less messy way).
4607                */
4608               if (is_first && is_last)
4609                 g_snprintf (new_detail, 127, "%s", detail);
4610               else if (is_first)
4611                 g_snprintf (new_detail, 127, "%s_start", detail);
4612               else if (is_last)
4613                 g_snprintf (new_detail, 127, "%s_end", detail);
4614               else
4615                 g_snprintf (new_detail, 128, "%s_middle", detail);
4616
4617               gtk_paint_flat_box (widget->style,
4618                                   event->window,
4619                                   state,
4620                                   GTK_SHADOW_NONE,
4621                                   &event->area,
4622                                   widget,
4623                                   new_detail,
4624                                   background_area.x,
4625                                   background_area.y,
4626                                   background_area.width,
4627                                   background_area.height);
4628             }
4629           else
4630             {
4631               gtk_paint_flat_box (widget->style,
4632                                   event->window,
4633                                   state,
4634                                   GTK_SHADOW_NONE,
4635                                   &event->area,
4636                                   widget,
4637                                   detail,
4638                                   background_area.x,
4639                                   background_area.y,
4640                                   background_area.width,
4641                                   background_area.height);
4642             }
4643
4644           if (draw_hgrid_lines)
4645             {
4646               if (background_area.y > 0)
4647                 gdk_draw_line (event->window,
4648                                tree_view->priv->grid_line_gc,
4649                                background_area.x, background_area.y,
4650                                background_area.x + background_area.width,
4651                                background_area.y);
4652
4653               if (y_offset + max_height >= event->area.height)
4654                 gdk_draw_line (event->window,
4655                                tree_view->priv->grid_line_gc,
4656                                background_area.x, background_area.y + max_height,
4657                                background_area.x + background_area.width,
4658                                background_area.y + max_height);
4659             }
4660
4661           if (gtk_tree_view_is_expander_column (tree_view, column))
4662             {
4663               if (!rtl)
4664                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4665               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4666
4667               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4668                 {
4669                   if (!rtl)
4670                     cell_area.x += depth * tree_view->priv->expander_size;
4671                   cell_area.width -= depth * tree_view->priv->expander_size;
4672                 }
4673
4674               /* If we have an expander column, the highlight underline
4675                * starts with that column, so that it indicates which
4676                * level of the tree we're dropping at.
4677                */
4678               highlight_x = cell_area.x;
4679               expander_cell_width = cell_area.width;
4680
4681               if (is_separator)
4682                 gtk_paint_hline (widget->style,
4683                                  event->window,
4684                                  state,
4685                                  &cell_area,
4686                                  widget,
4687                                  NULL,
4688                                  cell_area.x,
4689                                  cell_area.x + cell_area.width,
4690                                  cell_area.y + cell_area.height / 2);
4691               else
4692                 _gtk_tree_view_column_cell_render (column,
4693                                                    event->window,
4694                                                    &background_area,
4695                                                    &cell_area,
4696                                                    &event->area,
4697                                                    flags);
4698               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4699                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4700                 {
4701                   if (!got_pointer)
4702                     {
4703                       gdk_window_get_pointer (tree_view->priv->bin_window,
4704                                               &pointer_x, &pointer_y, NULL);
4705                       got_pointer = TRUE;
4706                     }
4707
4708                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4709                                             tree,
4710                                             node,
4711                                             pointer_x, pointer_y);
4712                 }
4713             }
4714           else
4715             {
4716               if (is_separator)
4717                 gtk_paint_hline (widget->style,
4718                                  event->window,
4719                                  state,
4720                                  &cell_area,
4721                                  widget,
4722                                  NULL,
4723                                  cell_area.x,
4724                                  cell_area.x + cell_area.width,
4725                                  cell_area.y + cell_area.height / 2);
4726               else
4727                 _gtk_tree_view_column_cell_render (column,
4728                                                    event->window,
4729                                                    &background_area,
4730                                                    &cell_area,
4731                                                    &event->area,
4732                                                    flags);
4733             }
4734
4735           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4736               tree_view->priv->tree_lines_enabled)
4737             {
4738               gint x = background_area.x;
4739               gint mult = rtl ? -1 : 1;
4740               gint y0 = background_area.y;
4741               gint y1 = background_area.y + background_area.height/2;
4742               gint y2 = background_area.y + background_area.height;
4743
4744               if (rtl)
4745                 x += background_area.width - 1;
4746
4747               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4748                   && depth > 1)
4749                 {
4750                   gdk_draw_line (event->window,
4751                                  tree_view->priv->tree_line_gc,
4752                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4753                                  y1,
4754                                  x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4755                                  y1);
4756                 }
4757               else if (depth > 1)
4758                 {
4759                   gdk_draw_line (event->window,
4760                                  tree_view->priv->tree_line_gc,
4761                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4762                                  y1,
4763                                  x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4764                                  y1);
4765                 }
4766
4767               if (depth > 1)
4768                 {
4769                   gint i;
4770                   GtkRBNode *tmp_node;
4771                   GtkRBTree *tmp_tree;
4772
4773                   if (!_gtk_rbtree_next (tree, node))
4774                     gdk_draw_line (event->window,
4775                                    tree_view->priv->tree_line_gc,
4776                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4777                                    y0,
4778                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4779                                    y1);
4780                   else
4781                     gdk_draw_line (event->window,
4782                                    tree_view->priv->tree_line_gc,
4783                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4784                                    y0,
4785                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4786                                    y2);
4787
4788                   tmp_node = tree->parent_node;
4789                   tmp_tree = tree->parent_tree;
4790
4791                   for (i = depth - 2; i > 0; i--)
4792                     {
4793                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4794                         gdk_draw_line (event->window,
4795                                        tree_view->priv->tree_line_gc,
4796                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4797                                        y0,
4798                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4799                                        y2);
4800
4801                       tmp_node = tmp_tree->parent_node;
4802                       tmp_tree = tmp_tree->parent_tree;
4803                     }
4804                 }
4805             }
4806
4807           if (node == cursor && has_special_cell &&
4808               ((column == tree_view->priv->focus_column &&
4809                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4810                 gtk_widget_has_focus (widget)) ||
4811                (column == tree_view->priv->edited_column)))
4812             {
4813               _gtk_tree_view_column_cell_draw_focus (column,
4814                                                      event->window,
4815                                                      &background_area,
4816                                                      &cell_area,
4817                                                      &event->area,
4818                                                      flags);
4819             }
4820
4821           cell_offset += column->width;
4822         }
4823
4824       if (node == drag_highlight)
4825         {
4826           /* Draw indicator for the drop
4827            */
4828           gint highlight_y = -1;
4829           GtkRBTree *tree = NULL;
4830           GtkRBNode *node = NULL;
4831           gint width;
4832
4833           switch (tree_view->priv->drag_dest_pos)
4834             {
4835             case GTK_TREE_VIEW_DROP_BEFORE:
4836               highlight_y = background_area.y - 1;
4837               if (highlight_y < 0)
4838                       highlight_y = 0;
4839               break;
4840
4841             case GTK_TREE_VIEW_DROP_AFTER:
4842               highlight_y = background_area.y + background_area.height - 1;
4843               break;
4844
4845             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4846             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4847               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4848
4849               if (tree == NULL)
4850                 break;
4851               gdk_drawable_get_size (tree_view->priv->bin_window,
4852                                      &width, NULL);
4853
4854               if (row_ending_details)
4855                 gtk_paint_focus (widget->style,
4856                                  tree_view->priv->bin_window,
4857                                  gtk_widget_get_state (widget),
4858                                  &event->area,
4859                                  widget,
4860                                  (is_first
4861                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4862                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4863                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4864                                  - focus_line_width / 2,
4865                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4866                                - focus_line_width + 1);
4867               else
4868                 gtk_paint_focus (widget->style,
4869                                  tree_view->priv->bin_window,
4870                                  gtk_widget_get_state (widget),
4871                                  &event->area,
4872                                  widget,
4873                                  "treeview-drop-indicator",
4874                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4875                                  - focus_line_width / 2,
4876                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4877                                  - focus_line_width + 1);
4878               break;
4879             }
4880
4881           if (highlight_y >= 0)
4882             {
4883               gdk_draw_line (event->window,
4884                              widget->style->fg_gc[gtk_widget_get_state (widget)],
4885                              rtl ? highlight_x + expander_cell_width : highlight_x,
4886                              highlight_y,
4887                              rtl ? 0 : bin_window_width,
4888                              highlight_y);
4889             }
4890         }
4891
4892       /* draw the big row-spanning focus rectangle, if needed */
4893       if (!has_special_cell && node == cursor &&
4894           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4895           gtk_widget_has_focus (widget))
4896         {
4897           gint tmp_y, tmp_height;
4898           gint width;
4899           GtkStateType focus_rect_state;
4900
4901           focus_rect_state =
4902             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4903             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4904              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4905               GTK_STATE_NORMAL));
4906
4907           gdk_drawable_get_size (tree_view->priv->bin_window,
4908                                  &width, NULL);
4909
4910           if (draw_hgrid_lines)
4911             {
4912               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4913               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4914             }
4915           else
4916             {
4917               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4918               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4919             }
4920
4921           if (row_ending_details)
4922             gtk_paint_focus (widget->style,
4923                              tree_view->priv->bin_window,
4924                              focus_rect_state,
4925                              &event->area,
4926                              widget,
4927                              (is_first
4928                               ? (is_last ? "treeview" : "treeview-left" )
4929                               : (is_last ? "treeview-right" : "treeview-middle" )),
4930                              0, tmp_y,
4931                              width, tmp_height);
4932           else
4933             gtk_paint_focus (widget->style,
4934                              tree_view->priv->bin_window,
4935                              focus_rect_state,
4936                              &event->area,
4937                              widget,
4938                              "treeview",
4939                              0, tmp_y,
4940                              width, tmp_height);
4941         }
4942
4943       y_offset += max_height;
4944       if (node->children)
4945         {
4946           GtkTreeIter parent = iter;
4947           gboolean has_child;
4948
4949           tree = node->children;
4950           node = tree->root;
4951
4952           g_assert (node != tree->nil);
4953
4954           while (node->left != tree->nil)
4955             node = node->left;
4956           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4957                                                     &iter,
4958                                                     &parent);
4959           depth++;
4960
4961           /* Sanity Check! */
4962           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4963         }
4964       else
4965         {
4966           gboolean done = FALSE;
4967
4968           do
4969             {
4970               node = _gtk_rbtree_next (tree, node);
4971               if (node != NULL)
4972                 {
4973                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4974                   done = TRUE;
4975
4976                   /* Sanity Check! */
4977                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4978                 }
4979               else
4980                 {
4981                   GtkTreeIter parent_iter = iter;
4982                   gboolean has_parent;
4983
4984                   node = tree->parent_node;
4985                   tree = tree->parent_tree;
4986                   if (tree == NULL)
4987                     /* we should go to done to free some memory */
4988                     goto done;
4989                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4990                                                            &iter,
4991                                                            &parent_iter);
4992                   depth--;
4993
4994                   /* Sanity check */
4995                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
4996                 }
4997             }
4998           while (!done);
4999         }
5000     }
5001   while (y_offset < event->area.height);
5002
5003 done:
5004   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
5005
5006   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
5007     {
5008       GdkRectangle rectangle;
5009       gint n_rectangles;
5010
5011       n_rectangles = cairo_region_num_rectangles (event->region);
5012
5013       while (n_rectangles--)
5014         {
5015           cairo_region_get_rectangle (event->region, n_rectangles, &rectangle);
5016           gtk_tree_view_paint_rubber_band (tree_view, &rectangle);
5017         }
5018     }
5019
5020   if (cursor_path)
5021     gtk_tree_path_free (cursor_path);
5022
5023   if (drag_dest_path)
5024     gtk_tree_path_free (drag_dest_path);
5025
5026   return FALSE;
5027 }
5028
5029 static gboolean
5030 gtk_tree_view_expose (GtkWidget      *widget,
5031                       GdkEventExpose *event)
5032 {
5033   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5034
5035   if (event->window == tree_view->priv->bin_window)
5036     {
5037       gboolean retval;
5038       GList *tmp_list;
5039
5040       retval = gtk_tree_view_bin_expose (widget, event);
5041
5042       /* We can't just chain up to Container::expose as it will try to send the
5043        * event to the headers, so we handle propagating it to our children
5044        * (eg. widgets being edited) ourselves.
5045        */
5046       tmp_list = tree_view->priv->children;
5047       while (tmp_list)
5048         {
5049           GtkTreeViewChild *child = tmp_list->data;
5050           tmp_list = tmp_list->next;
5051
5052           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
5053         }
5054
5055       return retval;
5056     }
5057
5058   else if (event->window == tree_view->priv->header_window)
5059     {
5060       GList *list;
5061
5062       for (list = tree_view->priv->columns; list != NULL; list = list->next)
5063         {
5064           GtkTreeViewColumn *column = list->data;
5065
5066           if (column == tree_view->priv->drag_column)
5067             continue;
5068
5069           if (column->visible)
5070             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5071                                             column->button,
5072                                             event);
5073         }
5074     }
5075   else if (event->window == tree_view->priv->drag_window)
5076     {
5077       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
5078                                       tree_view->priv->drag_column->button,
5079                                       event);
5080     }
5081   return TRUE;
5082 }
5083
5084 enum
5085 {
5086   DROP_HOME,
5087   DROP_RIGHT,
5088   DROP_LEFT,
5089   DROP_END
5090 };
5091
5092 /* returns 0x1 when no column has been found -- yes it's hackish */
5093 static GtkTreeViewColumn *
5094 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5095                                GtkTreeViewColumn *column,
5096                                gint               drop_position)
5097 {
5098   GtkTreeViewColumn *left_column = NULL;
5099   GtkTreeViewColumn *cur_column = NULL;
5100   GList *tmp_list;
5101
5102   if (!column->reorderable)
5103     return (GtkTreeViewColumn *)0x1;
5104
5105   switch (drop_position)
5106     {
5107       case DROP_HOME:
5108         /* find first column where we can drop */
5109         tmp_list = tree_view->priv->columns;
5110         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5111           return (GtkTreeViewColumn *)0x1;
5112
5113         while (tmp_list)
5114           {
5115             g_assert (tmp_list);
5116
5117             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5118             tmp_list = tmp_list->next;
5119
5120             if (left_column && left_column->visible == FALSE)
5121               continue;
5122
5123             if (!tree_view->priv->column_drop_func)
5124               return left_column;
5125
5126             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5127               {
5128                 left_column = cur_column;
5129                 continue;
5130               }
5131
5132             return left_column;
5133           }
5134
5135         if (!tree_view->priv->column_drop_func)
5136           return left_column;
5137
5138         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5139           return left_column;
5140         else
5141           return (GtkTreeViewColumn *)0x1;
5142         break;
5143
5144       case DROP_RIGHT:
5145         /* find first column after column where we can drop */
5146         tmp_list = tree_view->priv->columns;
5147
5148         for (; tmp_list; tmp_list = tmp_list->next)
5149           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5150             break;
5151
5152         if (!tmp_list || !tmp_list->next)
5153           return (GtkTreeViewColumn *)0x1;
5154
5155         tmp_list = tmp_list->next;
5156         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5157         tmp_list = tmp_list->next;
5158
5159         while (tmp_list)
5160           {
5161             g_assert (tmp_list);
5162
5163             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5164             tmp_list = tmp_list->next;
5165
5166             if (left_column && left_column->visible == FALSE)
5167               {
5168                 left_column = cur_column;
5169                 if (tmp_list)
5170                   tmp_list = tmp_list->next;
5171                 continue;
5172               }
5173
5174             if (!tree_view->priv->column_drop_func)
5175               return left_column;
5176
5177             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5178               {
5179                 left_column = cur_column;
5180                 continue;
5181               }
5182
5183             return left_column;
5184           }
5185
5186         if (!tree_view->priv->column_drop_func)
5187           return left_column;
5188
5189         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5190           return left_column;
5191         else
5192           return (GtkTreeViewColumn *)0x1;
5193         break;
5194
5195       case DROP_LEFT:
5196         /* find first column before column where we can drop */
5197         tmp_list = tree_view->priv->columns;
5198
5199         for (; tmp_list; tmp_list = tmp_list->next)
5200           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5201             break;
5202
5203         if (!tmp_list || !tmp_list->prev)
5204           return (GtkTreeViewColumn *)0x1;
5205
5206         tmp_list = tmp_list->prev;
5207         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5208         tmp_list = tmp_list->prev;
5209
5210         while (tmp_list)
5211           {
5212             g_assert (tmp_list);
5213
5214             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5215
5216             if (left_column && !left_column->visible)
5217               {
5218                 /*if (!tmp_list->prev)
5219                   return (GtkTreeViewColumn *)0x1;
5220                   */
5221 /*
5222                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5223                 tmp_list = tmp_list->prev->prev;
5224                 continue;*/
5225
5226                 cur_column = left_column;
5227                 if (tmp_list)
5228                   tmp_list = tmp_list->prev;
5229                 continue;
5230               }
5231
5232             if (!tree_view->priv->column_drop_func)
5233               return left_column;
5234
5235             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5236               return left_column;
5237
5238             cur_column = left_column;
5239             tmp_list = tmp_list->prev;
5240           }
5241
5242         if (!tree_view->priv->column_drop_func)
5243           return NULL;
5244
5245         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5246           return NULL;
5247         else
5248           return (GtkTreeViewColumn *)0x1;
5249         break;
5250
5251       case DROP_END:
5252         /* same as DROP_HOME case, but doing it backwards */
5253         tmp_list = g_list_last (tree_view->priv->columns);
5254         cur_column = NULL;
5255
5256         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5257           return (GtkTreeViewColumn *)0x1;
5258
5259         while (tmp_list)
5260           {
5261             g_assert (tmp_list);
5262
5263             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5264
5265             if (left_column && !left_column->visible)
5266               {
5267                 cur_column = left_column;
5268                 tmp_list = tmp_list->prev;
5269               }
5270
5271             if (!tree_view->priv->column_drop_func)
5272               return left_column;
5273
5274             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5275               return left_column;
5276
5277             cur_column = left_column;
5278             tmp_list = tmp_list->prev;
5279           }
5280
5281         if (!tree_view->priv->column_drop_func)
5282           return NULL;
5283
5284         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5285           return NULL;
5286         else
5287           return (GtkTreeViewColumn *)0x1;
5288         break;
5289     }
5290
5291   return (GtkTreeViewColumn *)0x1;
5292 }
5293
5294 static gboolean
5295 gtk_tree_view_key_press (GtkWidget   *widget,
5296                          GdkEventKey *event)
5297 {
5298   GtkTreeView *tree_view = (GtkTreeView *) widget;
5299
5300   if (tree_view->priv->rubber_band_status)
5301     {
5302       if (event->keyval == GDK_Escape)
5303         gtk_tree_view_stop_rubber_band (tree_view);
5304
5305       return TRUE;
5306     }
5307
5308   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5309     {
5310       if (event->keyval == GDK_Escape)
5311         {
5312           tree_view->priv->cur_reorder = NULL;
5313           gtk_tree_view_button_release_drag_column (widget, NULL);
5314         }
5315       return TRUE;
5316     }
5317
5318   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5319     {
5320       GList *focus_column;
5321       gboolean rtl;
5322
5323       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5324
5325       for (focus_column = tree_view->priv->columns;
5326            focus_column;
5327            focus_column = focus_column->next)
5328         {
5329           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5330
5331           if (gtk_widget_has_focus (column->button))
5332             break;
5333         }
5334
5335       if (focus_column &&
5336           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5337           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5338            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
5339         {
5340           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5341
5342           if (!column->resizable)
5343             {
5344               gtk_widget_error_bell (widget);
5345               return TRUE;
5346             }
5347
5348           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5349               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5350             {
5351               gint old_width = column->resized_width;
5352
5353               column->resized_width = MAX (column->resized_width,
5354                                            column->width);
5355               column->resized_width -= 2;
5356               if (column->resized_width < 0)
5357                 column->resized_width = 0;
5358
5359               if (column->min_width == -1)
5360                 column->resized_width = MAX (column->button->requisition.width,
5361                                              column->resized_width);
5362               else
5363                 column->resized_width = MAX (column->min_width,
5364                                              column->resized_width);
5365
5366               if (column->max_width != -1)
5367                 column->resized_width = MIN (column->resized_width,
5368                                              column->max_width);
5369
5370               column->use_resized_width = TRUE;
5371
5372               if (column->resized_width != old_width)
5373                 gtk_widget_queue_resize (widget);
5374               else
5375                 gtk_widget_error_bell (widget);
5376             }
5377           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5378                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5379             {
5380               gint old_width = column->resized_width;
5381
5382               column->resized_width = MAX (column->resized_width,
5383                                            column->width);
5384               column->resized_width += 2;
5385
5386               if (column->max_width != -1)
5387                 column->resized_width = MIN (column->resized_width,
5388                                              column->max_width);
5389
5390               column->use_resized_width = TRUE;
5391
5392               if (column->resized_width != old_width)
5393                 gtk_widget_queue_resize (widget);
5394               else
5395                 gtk_widget_error_bell (widget);
5396             }
5397
5398           return TRUE;
5399         }
5400
5401       if (focus_column &&
5402           (event->state & GDK_MOD1_MASK) &&
5403           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5404            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
5405            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
5406            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
5407         {
5408           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5409
5410           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5411               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5412             {
5413               GtkTreeViewColumn *col;
5414               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5415               if (col != (GtkTreeViewColumn *)0x1)
5416                 gtk_tree_view_move_column_after (tree_view, column, col);
5417               else
5418                 gtk_widget_error_bell (widget);
5419             }
5420           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5421                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5422             {
5423               GtkTreeViewColumn *col;
5424               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5425               if (col != (GtkTreeViewColumn *)0x1)
5426                 gtk_tree_view_move_column_after (tree_view, column, col);
5427               else
5428                 gtk_widget_error_bell (widget);
5429             }
5430           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
5431             {
5432               GtkTreeViewColumn *col;
5433               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5434               if (col != (GtkTreeViewColumn *)0x1)
5435                 gtk_tree_view_move_column_after (tree_view, column, col);
5436               else
5437                 gtk_widget_error_bell (widget);
5438             }
5439           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
5440             {
5441               GtkTreeViewColumn *col;
5442               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5443               if (col != (GtkTreeViewColumn *)0x1)
5444                 gtk_tree_view_move_column_after (tree_view, column, col);
5445               else
5446                 gtk_widget_error_bell (widget);
5447             }
5448
5449           return TRUE;
5450         }
5451     }
5452
5453   /* Chain up to the parent class.  It handles the keybindings. */
5454   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5455     return TRUE;
5456
5457   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5458     {
5459       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5460       return FALSE;
5461     }
5462
5463   /* We pass the event to the search_entry.  If its text changes, then we start
5464    * the typeahead find capabilities. */
5465   if (gtk_widget_has_focus (GTK_WIDGET (tree_view))
5466       && tree_view->priv->enable_search
5467       && !tree_view->priv->search_custom_entry_set)
5468     {
5469       GdkEvent *new_event;
5470       char *old_text;
5471       const char *new_text;
5472       gboolean retval;
5473       GdkScreen *screen;
5474       gboolean text_modified;
5475       gulong popup_menu_id;
5476
5477       gtk_tree_view_ensure_interactive_directory (tree_view);
5478
5479       /* Make a copy of the current text */
5480       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5481       new_event = gdk_event_copy ((GdkEvent *) event);
5482       g_object_unref (((GdkEventKey *) new_event)->window);
5483       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
5484       gtk_widget_realize (tree_view->priv->search_window);
5485
5486       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5487                                         "popup-menu", G_CALLBACK (gtk_true),
5488                                         NULL);
5489
5490       /* Move the entry off screen */
5491       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5492       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5493                        gdk_screen_get_width (screen) + 1,
5494                        gdk_screen_get_height (screen) + 1);
5495       gtk_widget_show (tree_view->priv->search_window);
5496
5497       /* Send the event to the window.  If the preedit_changed signal is emitted
5498        * during this event, we will set priv->imcontext_changed  */
5499       tree_view->priv->imcontext_changed = FALSE;
5500       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5501       gdk_event_free (new_event);
5502       gtk_widget_hide (tree_view->priv->search_window);
5503
5504       g_signal_handler_disconnect (tree_view->priv->search_entry,
5505                                    popup_menu_id);
5506
5507       /* We check to make sure that the entry tried to handle the text, and that
5508        * the text has changed.
5509        */
5510       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5511       text_modified = strcmp (old_text, new_text) != 0;
5512       g_free (old_text);
5513       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5514           (retval && text_modified))               /* ...or the text was modified */
5515         {
5516           if (gtk_tree_view_real_start_interactive_search (tree_view,
5517                                                            gdk_event_get_device ((GdkEvent *) event),
5518                                                            FALSE))
5519             {
5520               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5521               return TRUE;
5522             }
5523           else
5524             {
5525               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5526               return FALSE;
5527             }
5528         }
5529     }
5530
5531   return FALSE;
5532 }
5533
5534 static gboolean
5535 gtk_tree_view_key_release (GtkWidget   *widget,
5536                            GdkEventKey *event)
5537 {
5538   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5539
5540   if (tree_view->priv->rubber_band_status)
5541     return TRUE;
5542
5543   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5544 }
5545
5546 /* FIXME Is this function necessary? Can I get an enter_notify event
5547  * w/o either an expose event or a mouse motion event?
5548  */
5549 static gboolean
5550 gtk_tree_view_enter_notify (GtkWidget        *widget,
5551                             GdkEventCrossing *event)
5552 {
5553   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5554   GtkRBTree *tree;
5555   GtkRBNode *node;
5556   gint new_y;
5557
5558   /* Sanity check it */
5559   if (event->window != tree_view->priv->bin_window)
5560     return FALSE;
5561
5562   if (tree_view->priv->tree == NULL)
5563     return FALSE;
5564
5565   if (event->mode == GDK_CROSSING_GRAB ||
5566       event->mode == GDK_CROSSING_GTK_GRAB ||
5567       event->mode == GDK_CROSSING_GTK_UNGRAB ||
5568       event->mode == GDK_CROSSING_STATE_CHANGED)
5569     return TRUE;
5570
5571   /* find the node internally */
5572   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5573   if (new_y < 0)
5574     new_y = 0;
5575   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5576
5577   tree_view->priv->event_last_x = event->x;
5578   tree_view->priv->event_last_y = event->y;
5579
5580   if ((tree_view->priv->button_pressed_node == NULL) ||
5581       (tree_view->priv->button_pressed_node == node))
5582     prelight_or_select (tree_view, tree, node, event->x, event->y);
5583
5584   return TRUE;
5585 }
5586
5587 static gboolean
5588 gtk_tree_view_leave_notify (GtkWidget        *widget,
5589                             GdkEventCrossing *event)
5590 {
5591   GtkTreeView *tree_view;
5592
5593   if (event->mode == GDK_CROSSING_GRAB)
5594     return TRUE;
5595
5596   tree_view = GTK_TREE_VIEW (widget);
5597
5598   if (tree_view->priv->prelight_node)
5599     _gtk_tree_view_queue_draw_node (tree_view,
5600                                    tree_view->priv->prelight_tree,
5601                                    tree_view->priv->prelight_node,
5602                                    NULL);
5603
5604   tree_view->priv->event_last_x = -10000;
5605   tree_view->priv->event_last_y = -10000;
5606
5607   prelight_or_select (tree_view,
5608                       NULL, NULL,
5609                       -1000, -1000); /* coords not possibly over an arrow */
5610
5611   return TRUE;
5612 }
5613
5614
5615 static gint
5616 gtk_tree_view_focus_out (GtkWidget     *widget,
5617                          GdkEventFocus *event)
5618 {
5619   GtkTreeView *tree_view;
5620
5621   tree_view = GTK_TREE_VIEW (widget);
5622
5623   gtk_widget_queue_draw (widget);
5624
5625   /* destroy interactive search dialog */
5626   if (tree_view->priv->search_window)
5627     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view,
5628                                       gdk_event_get_device ((GdkEvent *) event));
5629
5630   return FALSE;
5631 }
5632
5633
5634 /* Incremental Reflow
5635  */
5636
5637 static void
5638 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5639                                  GtkRBTree   *tree,
5640                                  GtkRBNode   *node)
5641 {
5642   gint y;
5643
5644   y = _gtk_rbtree_node_find_offset (tree, node)
5645     - tree_view->priv->vadjustment->value
5646     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5647
5648   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5649                               0, y,
5650                               GTK_WIDGET (tree_view)->allocation.width,
5651                               GTK_RBNODE_GET_HEIGHT (node));
5652 }
5653
5654 static gboolean
5655 node_is_visible (GtkTreeView *tree_view,
5656                  GtkRBTree   *tree,
5657                  GtkRBNode   *node)
5658 {
5659   int y;
5660   int height;
5661
5662   y = _gtk_rbtree_node_find_offset (tree, node);
5663   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5664
5665   if (y >= tree_view->priv->vadjustment->value &&
5666       y + height <= (tree_view->priv->vadjustment->value
5667                      + tree_view->priv->vadjustment->page_size))
5668     return TRUE;
5669
5670   return FALSE;
5671 }
5672
5673 /* Returns TRUE if it updated the size
5674  */
5675 static gboolean
5676 validate_row (GtkTreeView *tree_view,
5677               GtkRBTree   *tree,
5678               GtkRBNode   *node,
5679               GtkTreeIter *iter,
5680               GtkTreePath *path)
5681 {
5682   GtkTreeViewColumn *column;
5683   GList *list, *first_column, *last_column;
5684   gint height = 0;
5685   gint horizontal_separator;
5686   gint vertical_separator;
5687   gint focus_line_width;
5688   gint depth = gtk_tree_path_get_depth (path);
5689   gboolean retval = FALSE;
5690   gboolean is_separator = FALSE;
5691   gboolean draw_vgrid_lines, draw_hgrid_lines;
5692   gint focus_pad;
5693   gint grid_line_width;
5694   gboolean wide_separators;
5695   gint separator_height;
5696
5697   /* double check the row needs validating */
5698   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5699       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5700     return FALSE;
5701
5702   is_separator = row_is_separator (tree_view, iter, NULL);
5703
5704   gtk_widget_style_get (GTK_WIDGET (tree_view),
5705                         "focus-padding", &focus_pad,
5706                         "focus-line-width", &focus_line_width,
5707                         "horizontal-separator", &horizontal_separator,
5708                         "vertical-separator", &vertical_separator,
5709                         "grid-line-width", &grid_line_width,
5710                         "wide-separators",  &wide_separators,
5711                         "separator-height", &separator_height,
5712                         NULL);
5713
5714   draw_vgrid_lines =
5715     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5716     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5717   draw_hgrid_lines =
5718     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5719     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5720
5721   for (last_column = g_list_last (tree_view->priv->columns);
5722        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5723        last_column = last_column->prev)
5724     ;
5725
5726   for (first_column = g_list_first (tree_view->priv->columns);
5727        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5728        first_column = first_column->next)
5729     ;
5730
5731   for (list = tree_view->priv->columns; list; list = list->next)
5732     {
5733       gint tmp_width;
5734       gint tmp_height;
5735
5736       column = list->data;
5737
5738       if (! column->visible)
5739         continue;
5740
5741       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5742         continue;
5743
5744       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5745                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5746                                                node->children?TRUE:FALSE);
5747       gtk_tree_view_column_cell_get_size (column,
5748                                           NULL, NULL, NULL,
5749                                           &tmp_width, &tmp_height);
5750
5751       if (!is_separator)
5752         {
5753           tmp_height += vertical_separator;
5754           height = MAX (height, tmp_height);
5755           height = MAX (height, tree_view->priv->expander_size);
5756         }
5757       else
5758         {
5759           if (wide_separators)
5760             height = separator_height + 2 * focus_pad;
5761           else
5762             height = 2 + 2 * focus_pad;
5763         }
5764
5765       if (gtk_tree_view_is_expander_column (tree_view, column))
5766         {
5767           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5768
5769           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5770             tmp_width += depth * tree_view->priv->expander_size;
5771         }
5772       else
5773         tmp_width = tmp_width + horizontal_separator;
5774
5775       if (draw_vgrid_lines)
5776         {
5777           if (list->data == first_column || list->data == last_column)
5778             tmp_width += grid_line_width / 2.0;
5779           else
5780             tmp_width += grid_line_width;
5781         }
5782
5783       if (tmp_width > column->requested_width)
5784         {
5785           retval = TRUE;
5786           column->requested_width = tmp_width;
5787         }
5788     }
5789
5790   if (draw_hgrid_lines)
5791     height += grid_line_width;
5792
5793   if (height != GTK_RBNODE_GET_HEIGHT (node))
5794     {
5795       retval = TRUE;
5796       _gtk_rbtree_node_set_height (tree, node, height);
5797     }
5798   _gtk_rbtree_node_mark_valid (tree, node);
5799   tree_view->priv->post_validation_flag = TRUE;
5800
5801   return retval;
5802 }
5803
5804
5805 static void
5806 validate_visible_area (GtkTreeView *tree_view)
5807 {
5808   GtkTreePath *path = NULL;
5809   GtkTreePath *above_path = NULL;
5810   GtkTreeIter iter;
5811   GtkRBTree *tree = NULL;
5812   GtkRBNode *node = NULL;
5813   gboolean need_redraw = FALSE;
5814   gboolean size_changed = FALSE;
5815   gint total_height;
5816   gint area_above = 0;
5817   gint area_below = 0;
5818
5819   if (tree_view->priv->tree == NULL)
5820     return;
5821
5822   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5823       tree_view->priv->scroll_to_path == NULL)
5824     return;
5825
5826   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5827
5828   if (total_height == 0)
5829     return;
5830
5831   /* First, we check to see if we need to scroll anywhere
5832    */
5833   if (tree_view->priv->scroll_to_path)
5834     {
5835       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5836       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5837         {
5838           /* we are going to scroll, and will update dy */
5839           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5840           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5841               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5842             {
5843               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5844               if (validate_row (tree_view, tree, node, &iter, path))
5845                 size_changed = TRUE;
5846             }
5847
5848           if (tree_view->priv->scroll_to_use_align)
5849             {
5850               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5851               area_above = (total_height - height) *
5852                 tree_view->priv->scroll_to_row_align;
5853               area_below = total_height - area_above - height;
5854               area_above = MAX (area_above, 0);
5855               area_below = MAX (area_below, 0);
5856             }
5857           else
5858             {
5859               /* two cases:
5860                * 1) row not visible
5861                * 2) row visible
5862                */
5863               gint dy;
5864               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5865
5866               dy = _gtk_rbtree_node_find_offset (tree, node);
5867
5868               if (dy >= tree_view->priv->vadjustment->value &&
5869                   dy + height <= (tree_view->priv->vadjustment->value
5870                                   + tree_view->priv->vadjustment->page_size))
5871                 {
5872                   /* row visible: keep the row at the same position */
5873                   area_above = dy - tree_view->priv->vadjustment->value;
5874                   area_below = (tree_view->priv->vadjustment->value +
5875                                 tree_view->priv->vadjustment->page_size)
5876                                - dy - height;
5877                 }
5878               else
5879                 {
5880                   /* row not visible */
5881                   if (dy >= 0
5882                       && dy + height <= tree_view->priv->vadjustment->page_size)
5883                     {
5884                       /* row at the beginning -- fixed */
5885                       area_above = dy;
5886                       area_below = tree_view->priv->vadjustment->page_size
5887                                    - area_above - height;
5888                     }
5889                   else if (dy >= (tree_view->priv->vadjustment->upper -
5890                                   tree_view->priv->vadjustment->page_size))
5891                     {
5892                       /* row at the end -- fixed */
5893                       area_above = dy - (tree_view->priv->vadjustment->upper -
5894                                    tree_view->priv->vadjustment->page_size);
5895                       area_below = tree_view->priv->vadjustment->page_size -
5896                                    area_above - height;
5897
5898                       if (area_below < 0)
5899                         {
5900                           area_above = tree_view->priv->vadjustment->page_size - height;
5901                           area_below = 0;
5902                         }
5903                     }
5904                   else
5905                     {
5906                       /* row somewhere in the middle, bring it to the top
5907                        * of the view
5908                        */
5909                       area_above = 0;
5910                       area_below = total_height - height;
5911                     }
5912                 }
5913             }
5914         }
5915       else
5916         /* the scroll to isn't valid; ignore it.
5917          */
5918         {
5919           if (tree_view->priv->scroll_to_path && !path)
5920             {
5921               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5922               tree_view->priv->scroll_to_path = NULL;
5923             }
5924           if (path)
5925             gtk_tree_path_free (path);
5926           path = NULL;
5927         }
5928     }
5929
5930   /* We didn't have a scroll_to set, so we just handle things normally
5931    */
5932   if (path == NULL)
5933     {
5934       gint offset;
5935
5936       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5937                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5938                                         &tree, &node);
5939       if (node == NULL)
5940         {
5941           /* In this case, nothing has been validated */
5942           path = gtk_tree_path_new_first ();
5943           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5944         }
5945       else
5946         {
5947           path = _gtk_tree_view_find_path (tree_view, tree, node);
5948           total_height += offset;
5949         }
5950
5951       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5952
5953       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5954           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5955         {
5956           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5957           if (validate_row (tree_view, tree, node, &iter, path))
5958             size_changed = TRUE;
5959         }
5960       area_above = 0;
5961       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5962     }
5963
5964   above_path = gtk_tree_path_copy (path);
5965
5966   /* if we do not validate any row above the new top_row, we will make sure
5967    * that the row immediately above top_row has been validated. (if we do not
5968    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5969    * when invalidated that row's height will be zero. and this will mess up
5970    * scrolling).
5971    */
5972   if (area_above == 0)
5973     {
5974       GtkRBTree *tmptree;
5975       GtkRBNode *tmpnode;
5976
5977       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5978       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5979
5980       if (tmpnode)
5981         {
5982           GtkTreePath *tmppath;
5983           GtkTreeIter tmpiter;
5984
5985           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5986           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
5987
5988           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
5989               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
5990             {
5991               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
5992               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
5993                 size_changed = TRUE;
5994             }
5995
5996           gtk_tree_path_free (tmppath);
5997         }
5998     }
5999
6000   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
6001    * backwards is much slower then forward, as there is no iter_prev function.
6002    * We go forwards first in case we run out of tree.  Then we go backwards to
6003    * fill out the top.
6004    */
6005   while (node && area_below > 0)
6006     {
6007       if (node->children)
6008         {
6009           GtkTreeIter parent = iter;
6010           gboolean has_child;
6011
6012           tree = node->children;
6013           node = tree->root;
6014
6015           g_assert (node != tree->nil);
6016
6017           while (node->left != tree->nil)
6018             node = node->left;
6019           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
6020                                                     &iter,
6021                                                     &parent);
6022           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
6023           gtk_tree_path_down (path);
6024         }
6025       else
6026         {
6027           gboolean done = FALSE;
6028           do
6029             {
6030               node = _gtk_rbtree_next (tree, node);
6031               if (node != NULL)
6032                 {
6033                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
6034                   done = TRUE;
6035                   gtk_tree_path_next (path);
6036
6037                   /* Sanity Check! */
6038                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
6039                 }
6040               else
6041                 {
6042                   GtkTreeIter parent_iter = iter;
6043                   gboolean has_parent;
6044
6045                   node = tree->parent_node;
6046                   tree = tree->parent_tree;
6047                   if (tree == NULL)
6048                     break;
6049                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
6050                                                            &iter,
6051                                                            &parent_iter);
6052                   gtk_tree_path_up (path);
6053
6054                   /* Sanity check */
6055                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
6056                 }
6057             }
6058           while (!done);
6059         }
6060
6061       if (!node)
6062         break;
6063
6064       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6065           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6066         {
6067           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6068           if (validate_row (tree_view, tree, node, &iter, path))
6069               size_changed = TRUE;
6070         }
6071
6072       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6073     }
6074   gtk_tree_path_free (path);
6075
6076   /* If we ran out of tree, and have extra area_below left, we need to add it
6077    * to area_above */
6078   if (area_below > 0)
6079     area_above += area_below;
6080
6081   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
6082
6083   /* We walk backwards */
6084   while (area_above > 0)
6085     {
6086       _gtk_rbtree_prev_full (tree, node, &tree, &node);
6087
6088       /* Always find the new path in the tree.  We cannot just assume
6089        * a gtk_tree_path_prev() is enough here, as there might be children
6090        * in between this node and the previous sibling node.  If this
6091        * appears to be a performance hotspot in profiles, we can look into
6092        * intrigate logic for keeping path, node and iter in sync like
6093        * we do for forward walks.  (Which will be hard because of the lacking
6094        * iter_prev).
6095        */
6096
6097       if (node == NULL)
6098         break;
6099
6100       gtk_tree_path_free (above_path);
6101       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
6102
6103       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
6104
6105       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6106           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6107         {
6108           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6109           if (validate_row (tree_view, tree, node, &iter, above_path))
6110             size_changed = TRUE;
6111         }
6112       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6113     }
6114
6115   /* if we scrolled to a path, we need to set the dy here,
6116    * and sync the top row accordingly
6117    */
6118   if (tree_view->priv->scroll_to_path)
6119     {
6120       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6121       gtk_tree_view_top_row_to_dy (tree_view);
6122
6123       need_redraw = TRUE;
6124     }
6125   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6126     {
6127       /* when we are not scrolling, we should never set dy to something
6128        * else than zero. we update top_row to be in sync with dy = 0.
6129        */
6130       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6131       gtk_tree_view_dy_to_top_row (tree_view);
6132     }
6133   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6134     {
6135       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6136       gtk_tree_view_dy_to_top_row (tree_view);
6137     }
6138   else
6139     gtk_tree_view_top_row_to_dy (tree_view);
6140
6141   /* update width/height and queue a resize */
6142   if (size_changed)
6143     {
6144       GtkRequisition requisition;
6145
6146       /* We temporarily guess a size, under the assumption that it will be the
6147        * same when we get our next size_allocate.  If we don't do this, we'll be
6148        * in an inconsistent state if we call top_row_to_dy. */
6149
6150       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6151       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6152       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6153       gtk_adjustment_changed (tree_view->priv->hadjustment);
6154       gtk_adjustment_changed (tree_view->priv->vadjustment);
6155       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6156     }
6157
6158   if (tree_view->priv->scroll_to_path)
6159     {
6160       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6161       tree_view->priv->scroll_to_path = NULL;
6162     }
6163
6164   if (above_path)
6165     gtk_tree_path_free (above_path);
6166
6167   if (tree_view->priv->scroll_to_column)
6168     {
6169       tree_view->priv->scroll_to_column = NULL;
6170     }
6171   if (need_redraw)
6172     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6173 }
6174
6175 static void
6176 initialize_fixed_height_mode (GtkTreeView *tree_view)
6177 {
6178   if (!tree_view->priv->tree)
6179     return;
6180
6181   if (tree_view->priv->fixed_height < 0)
6182     {
6183       GtkTreeIter iter;
6184       GtkTreePath *path;
6185
6186       GtkRBTree *tree = NULL;
6187       GtkRBNode *node = NULL;
6188
6189       tree = tree_view->priv->tree;
6190       node = tree->root;
6191
6192       path = _gtk_tree_view_find_path (tree_view, tree, node);
6193       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6194
6195       validate_row (tree_view, tree, node, &iter, path);
6196
6197       gtk_tree_path_free (path);
6198
6199       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6200     }
6201
6202    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6203                                  tree_view->priv->fixed_height, TRUE);
6204 }
6205
6206 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6207  * the left-most uninvalidated node.  We then try walking right, validating
6208  * nodes.  Once we find a valid node, we repeat the previous process of finding
6209  * the first invalid node.
6210  */
6211
6212 static gboolean
6213 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6214 {
6215   GtkRBTree *tree = NULL;
6216   GtkRBNode *node = NULL;
6217   gboolean validated_area = FALSE;
6218   gint retval = TRUE;
6219   GtkTreePath *path = NULL;
6220   GtkTreeIter iter;
6221   GTimer *timer;
6222   gint i = 0;
6223
6224   gint prev_height = -1;
6225   gboolean fixed_height = TRUE;
6226
6227   g_assert (tree_view);
6228
6229   if (tree_view->priv->tree == NULL)
6230       return FALSE;
6231
6232   if (tree_view->priv->fixed_height_mode)
6233     {
6234       if (tree_view->priv->fixed_height < 0)
6235         initialize_fixed_height_mode (tree_view);
6236
6237       return FALSE;
6238     }
6239
6240   timer = g_timer_new ();
6241   g_timer_start (timer);
6242
6243   do
6244     {
6245       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6246         {
6247           retval = FALSE;
6248           goto done;
6249         }
6250
6251       if (path != NULL)
6252         {
6253           node = _gtk_rbtree_next (tree, node);
6254           if (node != NULL)
6255             {
6256               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6257               gtk_tree_path_next (path);
6258             }
6259           else
6260             {
6261               gtk_tree_path_free (path);
6262               path = NULL;
6263             }
6264         }
6265
6266       if (path == NULL)
6267         {
6268           tree = tree_view->priv->tree;
6269           node = tree_view->priv->tree->root;
6270
6271           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6272
6273           do
6274             {
6275               if (node->left != tree->nil &&
6276                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6277                 {
6278                   node = node->left;
6279                 }
6280               else if (node->right != tree->nil &&
6281                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6282                 {
6283                   node = node->right;
6284                 }
6285               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6286                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6287                 {
6288                   break;
6289                 }
6290               else if (node->children != NULL)
6291                 {
6292                   tree = node->children;
6293                   node = tree->root;
6294                 }
6295               else
6296                 /* RBTree corruption!  All bad */
6297                 g_assert_not_reached ();
6298             }
6299           while (TRUE);
6300           path = _gtk_tree_view_find_path (tree_view, tree, node);
6301           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6302         }
6303
6304       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6305                        validated_area;
6306
6307       if (!tree_view->priv->fixed_height_check)
6308         {
6309           gint height;
6310
6311           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6312           if (prev_height < 0)
6313             prev_height = height;
6314           else if (prev_height != height)
6315             fixed_height = FALSE;
6316         }
6317
6318       i++;
6319     }
6320   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6321
6322   if (!tree_view->priv->fixed_height_check)
6323    {
6324      if (fixed_height)
6325        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6326
6327      tree_view->priv->fixed_height_check = 1;
6328    }
6329
6330  done:
6331   if (validated_area)
6332     {
6333       GtkRequisition requisition;
6334       /* We temporarily guess a size, under the assumption that it will be the
6335        * same when we get our next size_allocate.  If we don't do this, we'll be
6336        * in an inconsistent state when we call top_row_to_dy. */
6337
6338       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6339       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6340       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6341       gtk_adjustment_changed (tree_view->priv->hadjustment);
6342       gtk_adjustment_changed (tree_view->priv->vadjustment);
6343
6344       if (queue_resize)
6345         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6346     }
6347
6348   if (path) gtk_tree_path_free (path);
6349   g_timer_destroy (timer);
6350
6351   return retval;
6352 }
6353
6354 static gboolean
6355 validate_rows (GtkTreeView *tree_view)
6356 {
6357   gboolean retval;
6358
6359   retval = do_validate_rows (tree_view, TRUE);
6360
6361   if (! retval && tree_view->priv->validate_rows_timer)
6362     {
6363       g_source_remove (tree_view->priv->validate_rows_timer);
6364       tree_view->priv->validate_rows_timer = 0;
6365     }
6366
6367   return retval;
6368 }
6369
6370 static gboolean
6371 validate_rows_handler (GtkTreeView *tree_view)
6372 {
6373   gboolean retval;
6374
6375   retval = do_validate_rows (tree_view, TRUE);
6376   if (! retval && tree_view->priv->validate_rows_timer)
6377     {
6378       g_source_remove (tree_view->priv->validate_rows_timer);
6379       tree_view->priv->validate_rows_timer = 0;
6380     }
6381
6382   return retval;
6383 }
6384
6385 static gboolean
6386 do_presize_handler (GtkTreeView *tree_view)
6387 {
6388   if (tree_view->priv->mark_rows_col_dirty)
6389     {
6390       if (tree_view->priv->tree)
6391         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6392       tree_view->priv->mark_rows_col_dirty = FALSE;
6393     }
6394   validate_visible_area (tree_view);
6395   tree_view->priv->presize_handler_timer = 0;
6396
6397   if (tree_view->priv->fixed_height_mode)
6398     {
6399       GtkRequisition requisition;
6400
6401       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6402
6403       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6404       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6405       gtk_adjustment_changed (tree_view->priv->hadjustment);
6406       gtk_adjustment_changed (tree_view->priv->vadjustment);
6407       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6408     }
6409
6410   return FALSE;
6411 }
6412
6413 static gboolean
6414 presize_handler_callback (gpointer data)
6415 {
6416   do_presize_handler (GTK_TREE_VIEW (data));
6417
6418   return FALSE;
6419 }
6420
6421 static void
6422 install_presize_handler (GtkTreeView *tree_view)
6423 {
6424   if (! gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6425     return;
6426
6427   if (! tree_view->priv->presize_handler_timer)
6428     {
6429       tree_view->priv->presize_handler_timer =
6430         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6431     }
6432   if (! tree_view->priv->validate_rows_timer)
6433     {
6434       tree_view->priv->validate_rows_timer =
6435         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6436     }
6437 }
6438
6439 static gboolean
6440 scroll_sync_handler (GtkTreeView *tree_view)
6441 {
6442   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6443     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6444   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6445     gtk_tree_view_top_row_to_dy (tree_view);
6446   else
6447     gtk_tree_view_dy_to_top_row (tree_view);
6448
6449   tree_view->priv->scroll_sync_timer = 0;
6450
6451   return FALSE;
6452 }
6453
6454 static void
6455 install_scroll_sync_handler (GtkTreeView *tree_view)
6456 {
6457   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
6458     return;
6459
6460   if (!tree_view->priv->scroll_sync_timer)
6461     {
6462       tree_view->priv->scroll_sync_timer =
6463         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6464     }
6465 }
6466
6467 static void
6468 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6469                            GtkTreePath *path,
6470                            gint         offset)
6471 {
6472   gtk_tree_row_reference_free (tree_view->priv->top_row);
6473
6474   if (!path)
6475     {
6476       tree_view->priv->top_row = NULL;
6477       tree_view->priv->top_row_dy = 0;
6478     }
6479   else
6480     {
6481       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6482       tree_view->priv->top_row_dy = offset;
6483     }
6484 }
6485
6486 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6487  * it's set to be NULL, and top_row_dy is 0;
6488  */
6489 static void
6490 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6491 {
6492   gint offset;
6493   GtkTreePath *path;
6494   GtkRBTree *tree;
6495   GtkRBNode *node;
6496
6497   if (tree_view->priv->tree == NULL)
6498     {
6499       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6500     }
6501   else
6502     {
6503       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6504                                         tree_view->priv->dy,
6505                                         &tree, &node);
6506
6507       if (tree == NULL)
6508         {
6509           gtk_tree_view_set_top_row (tree_view, NULL, 0);
6510         }
6511       else
6512         {
6513           path = _gtk_tree_view_find_path (tree_view, tree, node);
6514           gtk_tree_view_set_top_row (tree_view, path, offset);
6515           gtk_tree_path_free (path);
6516         }
6517     }
6518 }
6519
6520 static void
6521 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6522 {
6523   GtkTreePath *path;
6524   GtkRBTree *tree;
6525   GtkRBNode *node;
6526   int new_dy;
6527
6528   /* Avoid recursive calls */
6529   if (tree_view->priv->in_top_row_to_dy)
6530     return;
6531
6532   if (tree_view->priv->top_row)
6533     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6534   else
6535     path = NULL;
6536
6537   if (!path)
6538     tree = NULL;
6539   else
6540     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6541
6542   if (path)
6543     gtk_tree_path_free (path);
6544
6545   if (tree == NULL)
6546     {
6547       /* keep dy and set new toprow */
6548       gtk_tree_row_reference_free (tree_view->priv->top_row);
6549       tree_view->priv->top_row = NULL;
6550       tree_view->priv->top_row_dy = 0;
6551       /* DO NOT install the idle handler */
6552       gtk_tree_view_dy_to_top_row (tree_view);
6553       return;
6554     }
6555
6556   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6557       < tree_view->priv->top_row_dy)
6558     {
6559       /* new top row -- do NOT install the idle handler */
6560       gtk_tree_view_dy_to_top_row (tree_view);
6561       return;
6562     }
6563
6564   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6565   new_dy += tree_view->priv->top_row_dy;
6566
6567   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6568     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6569
6570   new_dy = MAX (0, new_dy);
6571
6572   tree_view->priv->in_top_row_to_dy = TRUE;
6573   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6574   tree_view->priv->in_top_row_to_dy = FALSE;
6575 }
6576
6577
6578 void
6579 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6580 {
6581   tree_view->priv->mark_rows_col_dirty = TRUE;
6582
6583   install_presize_handler (tree_view);
6584 }
6585
6586 /*
6587  * This function works synchronously (due to the while (validate_rows...)
6588  * loop).
6589  *
6590  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6591  * here. You now need to check that yourself.
6592  */
6593 void
6594 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6595                                 GtkTreeViewColumn *column)
6596 {
6597   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6598   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6599
6600   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6601
6602   do_presize_handler (tree_view);
6603   while (validate_rows (tree_view));
6604
6605   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6606 }
6607
6608 /* Drag-and-drop */
6609
6610 static void
6611 set_source_row (GdkDragContext *context,
6612                 GtkTreeModel   *model,
6613                 GtkTreePath    *source_row)
6614 {
6615   g_object_set_data_full (G_OBJECT (context),
6616                           I_("gtk-tree-view-source-row"),
6617                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6618                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6619 }
6620
6621 static GtkTreePath*
6622 get_source_row (GdkDragContext *context)
6623 {
6624   GtkTreeRowReference *ref =
6625     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6626
6627   if (ref)
6628     return gtk_tree_row_reference_get_path (ref);
6629   else
6630     return NULL;
6631 }
6632
6633 typedef struct
6634 {
6635   GtkTreeRowReference *dest_row;
6636   guint                path_down_mode   : 1;
6637   guint                empty_view_drop  : 1;
6638   guint                drop_append_mode : 1;
6639 }
6640 DestRow;
6641
6642 static void
6643 dest_row_free (gpointer data)
6644 {
6645   DestRow *dr = (DestRow *)data;
6646
6647   gtk_tree_row_reference_free (dr->dest_row);
6648   g_slice_free (DestRow, dr);
6649 }
6650
6651 static void
6652 set_dest_row (GdkDragContext *context,
6653               GtkTreeModel   *model,
6654               GtkTreePath    *dest_row,
6655               gboolean        path_down_mode,
6656               gboolean        empty_view_drop,
6657               gboolean        drop_append_mode)
6658 {
6659   DestRow *dr;
6660
6661   if (!dest_row)
6662     {
6663       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6664                               NULL, NULL);
6665       return;
6666     }
6667
6668   dr = g_slice_new (DestRow);
6669
6670   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6671   dr->path_down_mode = path_down_mode != FALSE;
6672   dr->empty_view_drop = empty_view_drop != FALSE;
6673   dr->drop_append_mode = drop_append_mode != FALSE;
6674
6675   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6676                           dr, (GDestroyNotify) dest_row_free);
6677 }
6678
6679 static GtkTreePath*
6680 get_dest_row (GdkDragContext *context,
6681               gboolean       *path_down_mode)
6682 {
6683   DestRow *dr =
6684     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6685
6686   if (dr)
6687     {
6688       GtkTreePath *path = NULL;
6689
6690       if (path_down_mode)
6691         *path_down_mode = dr->path_down_mode;
6692
6693       if (dr->dest_row)
6694         path = gtk_tree_row_reference_get_path (dr->dest_row);
6695       else if (dr->empty_view_drop)
6696         path = gtk_tree_path_new_from_indices (0, -1);
6697       else
6698         path = NULL;
6699
6700       if (path && dr->drop_append_mode)
6701         gtk_tree_path_next (path);
6702
6703       return path;
6704     }
6705   else
6706     return NULL;
6707 }
6708
6709 /* Get/set whether drag_motion requested the drag data and
6710  * drag_data_received should thus not actually insert the data,
6711  * since the data doesn't result from a drop.
6712  */
6713 static void
6714 set_status_pending (GdkDragContext *context,
6715                     GdkDragAction   suggested_action)
6716 {
6717   g_object_set_data (G_OBJECT (context),
6718                      I_("gtk-tree-view-status-pending"),
6719                      GINT_TO_POINTER (suggested_action));
6720 }
6721
6722 static GdkDragAction
6723 get_status_pending (GdkDragContext *context)
6724 {
6725   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6726                                              "gtk-tree-view-status-pending"));
6727 }
6728
6729 static TreeViewDragInfo*
6730 get_info (GtkTreeView *tree_view)
6731 {
6732   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6733 }
6734
6735 static void
6736 destroy_info (TreeViewDragInfo *di)
6737 {
6738   g_slice_free (TreeViewDragInfo, di);
6739 }
6740
6741 static TreeViewDragInfo*
6742 ensure_info (GtkTreeView *tree_view)
6743 {
6744   TreeViewDragInfo *di;
6745
6746   di = get_info (tree_view);
6747
6748   if (di == NULL)
6749     {
6750       di = g_slice_new0 (TreeViewDragInfo);
6751
6752       g_object_set_data_full (G_OBJECT (tree_view),
6753                               I_("gtk-tree-view-drag-info"),
6754                               di,
6755                               (GDestroyNotify) destroy_info);
6756     }
6757
6758   return di;
6759 }
6760
6761 static void
6762 remove_info (GtkTreeView *tree_view)
6763 {
6764   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6765 }
6766
6767 #if 0
6768 static gint
6769 drag_scan_timeout (gpointer data)
6770 {
6771   GtkTreeView *tree_view;
6772   gint x, y;
6773   GdkModifierType state;
6774   GtkTreePath *path = NULL;
6775   GtkTreeViewColumn *column = NULL;
6776   GdkRectangle visible_rect;
6777
6778   GDK_THREADS_ENTER ();
6779
6780   tree_view = GTK_TREE_VIEW (data);
6781
6782   gdk_window_get_pointer (tree_view->priv->bin_window,
6783                           &x, &y, &state);
6784
6785   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6786
6787   /* See if we are near the edge. */
6788   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6789       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6790       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6791       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6792     {
6793       gtk_tree_view_get_path_at_pos (tree_view,
6794                                      tree_view->priv->bin_window,
6795                                      x, y,
6796                                      &path,
6797                                      &column,
6798                                      NULL,
6799                                      NULL);
6800
6801       if (path != NULL)
6802         {
6803           gtk_tree_view_scroll_to_cell (tree_view,
6804                                         path,
6805                                         column,
6806                                         TRUE,
6807                                         0.5, 0.5);
6808
6809           gtk_tree_path_free (path);
6810         }
6811     }
6812
6813   GDK_THREADS_LEAVE ();
6814
6815   return TRUE;
6816 }
6817 #endif /* 0 */
6818
6819 static void
6820 add_scroll_timeout (GtkTreeView *tree_view)
6821 {
6822   if (tree_view->priv->scroll_timeout == 0)
6823     {
6824       tree_view->priv->scroll_timeout =
6825         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6826     }
6827 }
6828
6829 static void
6830 remove_scroll_timeout (GtkTreeView *tree_view)
6831 {
6832   if (tree_view->priv->scroll_timeout != 0)
6833     {
6834       g_source_remove (tree_view->priv->scroll_timeout);
6835       tree_view->priv->scroll_timeout = 0;
6836     }
6837 }
6838
6839 static gboolean
6840 check_model_dnd (GtkTreeModel *model,
6841                  GType         required_iface,
6842                  const gchar  *signal)
6843 {
6844   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6845     {
6846       g_warning ("You must override the default '%s' handler "
6847                  "on GtkTreeView when using models that don't support "
6848                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6849                  "is to connect to '%s' and call "
6850                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6851                  "the default handler from running. Look at the source code "
6852                  "for the default handler in gtktreeview.c to get an idea what "
6853                  "your handler should do. (gtktreeview.c is in the GTK source "
6854                  "code.) If you're using GTK from a language other than C, "
6855                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6856                  signal, g_type_name (required_iface), signal);
6857       return FALSE;
6858     }
6859   else
6860     return TRUE;
6861 }
6862
6863 static void
6864 remove_open_timeout (GtkTreeView *tree_view)
6865 {
6866   if (tree_view->priv->open_dest_timeout != 0)
6867     {
6868       g_source_remove (tree_view->priv->open_dest_timeout);
6869       tree_view->priv->open_dest_timeout = 0;
6870     }
6871 }
6872
6873
6874 static gint
6875 open_row_timeout (gpointer data)
6876 {
6877   GtkTreeView *tree_view = data;
6878   GtkTreePath *dest_path = NULL;
6879   GtkTreeViewDropPosition pos;
6880   gboolean result = FALSE;
6881
6882   gtk_tree_view_get_drag_dest_row (tree_view,
6883                                    &dest_path,
6884                                    &pos);
6885
6886   if (dest_path &&
6887       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6888        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6889     {
6890       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6891       tree_view->priv->open_dest_timeout = 0;
6892
6893       gtk_tree_path_free (dest_path);
6894     }
6895   else
6896     {
6897       if (dest_path)
6898         gtk_tree_path_free (dest_path);
6899
6900       result = TRUE;
6901     }
6902
6903   return result;
6904 }
6905
6906 static gboolean
6907 scroll_row_timeout (gpointer data)
6908 {
6909   GtkTreeView *tree_view = data;
6910
6911   gtk_tree_view_vertical_autoscroll (tree_view);
6912
6913   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6914     gtk_tree_view_update_rubber_band (tree_view);
6915
6916   return TRUE;
6917 }
6918
6919 /* Returns TRUE if event should not be propagated to parent widgets */
6920 static gboolean
6921 set_destination_row (GtkTreeView    *tree_view,
6922                      GdkDragContext *context,
6923                      /* coordinates relative to the widget */
6924                      gint            x,
6925                      gint            y,
6926                      GdkDragAction  *suggested_action,
6927                      GdkAtom        *target)
6928 {
6929   GtkTreePath *path = NULL;
6930   GtkTreeViewDropPosition pos;
6931   GtkTreeViewDropPosition old_pos;
6932   TreeViewDragInfo *di;
6933   GtkWidget *widget;
6934   GtkTreePath *old_dest_path = NULL;
6935   gboolean can_drop = FALSE;
6936
6937   *suggested_action = 0;
6938   *target = GDK_NONE;
6939
6940   widget = GTK_WIDGET (tree_view);
6941
6942   di = get_info (tree_view);
6943
6944   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6945     {
6946       /* someone unset us as a drag dest, note that if
6947        * we return FALSE drag_leave isn't called
6948        */
6949
6950       gtk_tree_view_set_drag_dest_row (tree_view,
6951                                        NULL,
6952                                        GTK_TREE_VIEW_DROP_BEFORE);
6953
6954       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6955       remove_open_timeout (GTK_TREE_VIEW (widget));
6956
6957       return FALSE; /* no longer a drop site */
6958     }
6959
6960   *target = gtk_drag_dest_find_target (widget, context,
6961                                        gtk_drag_dest_get_target_list (widget));
6962   if (*target == GDK_NONE)
6963     {
6964       return FALSE;
6965     }
6966
6967   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6968                                           x, y,
6969                                           &path,
6970                                           &pos))
6971     {
6972       gint n_children;
6973       GtkTreeModel *model;
6974
6975       remove_open_timeout (tree_view);
6976
6977       /* the row got dropped on empty space, let's setup a special case
6978        */
6979
6980       if (path)
6981         gtk_tree_path_free (path);
6982
6983       model = gtk_tree_view_get_model (tree_view);
6984
6985       n_children = gtk_tree_model_iter_n_children (model, NULL);
6986       if (n_children)
6987         {
6988           pos = GTK_TREE_VIEW_DROP_AFTER;
6989           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6990         }
6991       else
6992         {
6993           pos = GTK_TREE_VIEW_DROP_BEFORE;
6994           path = gtk_tree_path_new_from_indices (0, -1);
6995         }
6996
6997       can_drop = TRUE;
6998
6999       goto out;
7000     }
7001
7002   g_assert (path);
7003
7004   /* If we left the current row's "open" zone, unset the timeout for
7005    * opening the row
7006    */
7007   gtk_tree_view_get_drag_dest_row (tree_view,
7008                                    &old_dest_path,
7009                                    &old_pos);
7010
7011   if (old_dest_path &&
7012       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
7013        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7014          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
7015     remove_open_timeout (tree_view);
7016
7017   if (old_dest_path)
7018     gtk_tree_path_free (old_dest_path);
7019
7020   if (TRUE /* FIXME if the location droppable predicate */)
7021     {
7022       can_drop = TRUE;
7023     }
7024
7025 out:
7026   if (can_drop)
7027     {
7028       GtkWidget *source_widget;
7029
7030       *suggested_action = context->suggested_action;
7031       source_widget = gtk_drag_get_source_widget (context);
7032
7033       if (source_widget == widget)
7034         {
7035           /* Default to MOVE, unless the user has
7036            * pressed ctrl or shift to affect available actions
7037            */
7038           if ((context->actions & GDK_ACTION_MOVE) != 0)
7039             *suggested_action = GDK_ACTION_MOVE;
7040         }
7041
7042       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7043                                        path, pos);
7044     }
7045   else
7046     {
7047       /* can't drop here */
7048       remove_open_timeout (tree_view);
7049
7050       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7051                                        NULL,
7052                                        GTK_TREE_VIEW_DROP_BEFORE);
7053     }
7054
7055   if (path)
7056     gtk_tree_path_free (path);
7057
7058   return TRUE;
7059 }
7060
7061 static GtkTreePath*
7062 get_logical_dest_row (GtkTreeView *tree_view,
7063                       gboolean    *path_down_mode,
7064                       gboolean    *drop_append_mode)
7065 {
7066   /* adjust path to point to the row the drop goes in front of */
7067   GtkTreePath *path = NULL;
7068   GtkTreeViewDropPosition pos;
7069
7070   g_return_val_if_fail (path_down_mode != NULL, NULL);
7071   g_return_val_if_fail (drop_append_mode != NULL, NULL);
7072
7073   *path_down_mode = FALSE;
7074   *drop_append_mode = 0;
7075
7076   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7077
7078   if (path == NULL)
7079     return NULL;
7080
7081   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
7082     ; /* do nothing */
7083   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
7084            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
7085     *path_down_mode = TRUE;
7086   else
7087     {
7088       GtkTreeIter iter;
7089       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
7090
7091       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
7092
7093       if (!gtk_tree_model_get_iter (model, &iter, path) ||
7094           !gtk_tree_model_iter_next (model, &iter))
7095         *drop_append_mode = 1;
7096       else
7097         {
7098           *drop_append_mode = 0;
7099           gtk_tree_path_next (path);
7100         }
7101     }
7102
7103   return path;
7104 }
7105
7106 static gboolean
7107 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
7108                                         GdkEventMotion   *event)
7109 {
7110   GtkWidget *widget = GTK_WIDGET (tree_view);
7111   GdkDragContext *context;
7112   TreeViewDragInfo *di;
7113   GtkTreePath *path = NULL;
7114   gint button;
7115   gint cell_x, cell_y;
7116   GtkTreeModel *model;
7117   gboolean retval = FALSE;
7118
7119   di = get_info (tree_view);
7120
7121   if (di == NULL || !di->source_set)
7122     goto out;
7123
7124   if (tree_view->priv->pressed_button < 0)
7125     goto out;
7126
7127   if (!gtk_drag_check_threshold (widget,
7128                                  tree_view->priv->press_start_x,
7129                                  tree_view->priv->press_start_y,
7130                                  event->x, event->y))
7131     goto out;
7132
7133   model = gtk_tree_view_get_model (tree_view);
7134
7135   if (model == NULL)
7136     goto out;
7137
7138   button = tree_view->priv->pressed_button;
7139   tree_view->priv->pressed_button = -1;
7140
7141   gtk_tree_view_get_path_at_pos (tree_view,
7142                                  tree_view->priv->press_start_x,
7143                                  tree_view->priv->press_start_y,
7144                                  &path,
7145                                  NULL,
7146                                  &cell_x,
7147                                  &cell_y);
7148
7149   if (path == NULL)
7150     goto out;
7151
7152   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7153       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7154                                            path))
7155     goto out;
7156
7157   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7158     goto out;
7159
7160   /* Now we can begin the drag */
7161
7162   retval = TRUE;
7163
7164   context = gtk_drag_begin (widget,
7165                             gtk_drag_source_get_target_list (widget),
7166                             di->source_actions,
7167                             button,
7168                             (GdkEvent*)event);
7169
7170   set_source_row (context, model, path);
7171
7172  out:
7173   if (path)
7174     gtk_tree_path_free (path);
7175
7176   return retval;
7177 }
7178
7179
7180 static void
7181 gtk_tree_view_drag_begin (GtkWidget      *widget,
7182                           GdkDragContext *context)
7183 {
7184   GtkTreeView *tree_view;
7185   GtkTreePath *path = NULL;
7186   gint cell_x, cell_y;
7187   GdkPixmap *row_pix;
7188   TreeViewDragInfo *di;
7189
7190   tree_view = GTK_TREE_VIEW (widget);
7191
7192   /* if the user uses a custom DND source impl, we don't set the icon here */
7193   di = get_info (tree_view);
7194
7195   if (di == NULL || !di->source_set)
7196     return;
7197
7198   gtk_tree_view_get_path_at_pos (tree_view,
7199                                  tree_view->priv->press_start_x,
7200                                  tree_view->priv->press_start_y,
7201                                  &path,
7202                                  NULL,
7203                                  &cell_x,
7204                                  &cell_y);
7205
7206   g_return_if_fail (path != NULL);
7207
7208   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7209                                                 path);
7210
7211   gtk_drag_set_icon_pixmap (context,
7212                             gdk_drawable_get_colormap (row_pix),
7213                             row_pix,
7214                             NULL,
7215                             /* the + 1 is for the black border in the icon */
7216                             tree_view->priv->press_start_x + 1,
7217                             cell_y + 1);
7218
7219   g_object_unref (row_pix);
7220   gtk_tree_path_free (path);
7221 }
7222
7223 static void
7224 gtk_tree_view_drag_end (GtkWidget      *widget,
7225                         GdkDragContext *context)
7226 {
7227   /* do nothing */
7228 }
7229
7230 /* Default signal implementations for the drag signals */
7231 static void
7232 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7233                              GdkDragContext   *context,
7234                              GtkSelectionData *selection_data,
7235                              guint             info,
7236                              guint             time)
7237 {
7238   GtkTreeView *tree_view;
7239   GtkTreeModel *model;
7240   TreeViewDragInfo *di;
7241   GtkTreePath *source_row;
7242
7243   tree_view = GTK_TREE_VIEW (widget);
7244
7245   model = gtk_tree_view_get_model (tree_view);
7246
7247   if (model == NULL)
7248     return;
7249
7250   di = get_info (GTK_TREE_VIEW (widget));
7251
7252   if (di == NULL)
7253     return;
7254
7255   source_row = get_source_row (context);
7256
7257   if (source_row == NULL)
7258     return;
7259
7260   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7261    * any model; for DragSource models there are some other targets
7262    * we also support.
7263    */
7264
7265   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7266       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7267                                           source_row,
7268                                           selection_data))
7269     goto done;
7270
7271   /* If drag_data_get does nothing, try providing row data. */
7272   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7273     {
7274       gtk_tree_set_row_drag_data (selection_data,
7275                                   model,
7276                                   source_row);
7277     }
7278
7279  done:
7280   gtk_tree_path_free (source_row);
7281 }
7282
7283
7284 static void
7285 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7286                                 GdkDragContext *context)
7287 {
7288   TreeViewDragInfo *di;
7289   GtkTreeModel *model;
7290   GtkTreeView *tree_view;
7291   GtkTreePath *source_row;
7292
7293   tree_view = GTK_TREE_VIEW (widget);
7294   model = gtk_tree_view_get_model (tree_view);
7295
7296   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7297     return;
7298
7299   di = get_info (tree_view);
7300
7301   if (di == NULL)
7302     return;
7303
7304   source_row = get_source_row (context);
7305
7306   if (source_row == NULL)
7307     return;
7308
7309   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7310                                          source_row);
7311
7312   gtk_tree_path_free (source_row);
7313
7314   set_source_row (context, NULL, NULL);
7315 }
7316
7317 static void
7318 gtk_tree_view_drag_leave (GtkWidget      *widget,
7319                           GdkDragContext *context,
7320                           guint             time)
7321 {
7322   /* unset any highlight row */
7323   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7324                                    NULL,
7325                                    GTK_TREE_VIEW_DROP_BEFORE);
7326
7327   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7328   remove_open_timeout (GTK_TREE_VIEW (widget));
7329 }
7330
7331
7332 static gboolean
7333 gtk_tree_view_drag_motion (GtkWidget        *widget,
7334                            GdkDragContext   *context,
7335                            /* coordinates relative to the widget */
7336                            gint              x,
7337                            gint              y,
7338                            guint             time)
7339 {
7340   gboolean empty;
7341   GtkTreePath *path = NULL;
7342   GtkTreeViewDropPosition pos;
7343   GtkTreeView *tree_view;
7344   GdkDragAction suggested_action = 0;
7345   GdkAtom target;
7346
7347   tree_view = GTK_TREE_VIEW (widget);
7348
7349   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7350     return FALSE;
7351
7352   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7353
7354   /* we only know this *after* set_desination_row */
7355   empty = tree_view->priv->empty_view_drop;
7356
7357   if (path == NULL && !empty)
7358     {
7359       /* Can't drop here. */
7360       gdk_drag_status (context, 0, time);
7361     }
7362   else
7363     {
7364       if (tree_view->priv->open_dest_timeout == 0 &&
7365           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7366            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7367         {
7368           tree_view->priv->open_dest_timeout =
7369             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7370         }
7371       else
7372         {
7373           add_scroll_timeout (tree_view);
7374         }
7375
7376       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7377         {
7378           /* Request data so we can use the source row when
7379            * determining whether to accept the drop
7380            */
7381           set_status_pending (context, suggested_action);
7382           gtk_drag_get_data (widget, context, target, time);
7383         }
7384       else
7385         {
7386           set_status_pending (context, 0);
7387           gdk_drag_status (context, suggested_action, time);
7388         }
7389     }
7390
7391   if (path)
7392     gtk_tree_path_free (path);
7393
7394   return TRUE;
7395 }
7396
7397
7398 static gboolean
7399 gtk_tree_view_drag_drop (GtkWidget        *widget,
7400                          GdkDragContext   *context,
7401                          /* coordinates relative to the widget */
7402                          gint              x,
7403                          gint              y,
7404                          guint             time)
7405 {
7406   GtkTreeView *tree_view;
7407   GtkTreePath *path;
7408   GdkDragAction suggested_action = 0;
7409   GdkAtom target = GDK_NONE;
7410   TreeViewDragInfo *di;
7411   GtkTreeModel *model;
7412   gboolean path_down_mode;
7413   gboolean drop_append_mode;
7414
7415   tree_view = GTK_TREE_VIEW (widget);
7416
7417   model = gtk_tree_view_get_model (tree_view);
7418
7419   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7420   remove_open_timeout (GTK_TREE_VIEW (widget));
7421
7422   di = get_info (tree_view);
7423
7424   if (di == NULL)
7425     return FALSE;
7426
7427   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7428     return FALSE;
7429
7430   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7431     return FALSE;
7432
7433   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7434
7435   if (target != GDK_NONE && path != NULL)
7436     {
7437       /* in case a motion had requested drag data, change things so we
7438        * treat drag data receives as a drop.
7439        */
7440       set_status_pending (context, 0);
7441       set_dest_row (context, model, path,
7442                     path_down_mode, tree_view->priv->empty_view_drop,
7443                     drop_append_mode);
7444     }
7445
7446   if (path)
7447     gtk_tree_path_free (path);
7448
7449   /* Unset this thing */
7450   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7451                                    NULL,
7452                                    GTK_TREE_VIEW_DROP_BEFORE);
7453
7454   if (target != GDK_NONE)
7455     {
7456       gtk_drag_get_data (widget, context, target, time);
7457       return TRUE;
7458     }
7459   else
7460     return FALSE;
7461 }
7462
7463 static void
7464 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7465                                   GdkDragContext   *context,
7466                                   /* coordinates relative to the widget */
7467                                   gint              x,
7468                                   gint              y,
7469                                   GtkSelectionData *selection_data,
7470                                   guint             info,
7471                                   guint             time)
7472 {
7473   GtkTreePath *path;
7474   TreeViewDragInfo *di;
7475   gboolean accepted = FALSE;
7476   GtkTreeModel *model;
7477   GtkTreeView *tree_view;
7478   GtkTreePath *dest_row;
7479   GdkDragAction suggested_action;
7480   gboolean path_down_mode;
7481   gboolean drop_append_mode;
7482
7483   tree_view = GTK_TREE_VIEW (widget);
7484
7485   model = gtk_tree_view_get_model (tree_view);
7486
7487   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7488     return;
7489
7490   di = get_info (tree_view);
7491
7492   if (di == NULL)
7493     return;
7494
7495   suggested_action = get_status_pending (context);
7496
7497   if (suggested_action)
7498     {
7499       /* We are getting this data due to a request in drag_motion,
7500        * rather than due to a request in drag_drop, so we are just
7501        * supposed to call drag_status, not actually paste in the
7502        * data.
7503        */
7504       path = get_logical_dest_row (tree_view, &path_down_mode,
7505                                    &drop_append_mode);
7506
7507       if (path == NULL)
7508         suggested_action = 0;
7509       else if (path_down_mode)
7510         gtk_tree_path_down (path);
7511
7512       if (suggested_action)
7513         {
7514           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7515                                                      path,
7516                                                      selection_data))
7517             {
7518               if (path_down_mode)
7519                 {
7520                   path_down_mode = FALSE;
7521                   gtk_tree_path_up (path);
7522
7523                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7524                                                              path,
7525                                                              selection_data))
7526                     suggested_action = 0;
7527                 }
7528               else
7529                 suggested_action = 0;
7530             }
7531         }
7532
7533       gdk_drag_status (context, suggested_action, time);
7534
7535       if (path)
7536         gtk_tree_path_free (path);
7537
7538       /* If you can't drop, remove user drop indicator until the next motion */
7539       if (suggested_action == 0)
7540         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7541                                          NULL,
7542                                          GTK_TREE_VIEW_DROP_BEFORE);
7543
7544       return;
7545     }
7546
7547   dest_row = get_dest_row (context, &path_down_mode);
7548
7549   if (dest_row == NULL)
7550     return;
7551
7552   if (selection_data->length >= 0)
7553     {
7554       if (path_down_mode)
7555         {
7556           gtk_tree_path_down (dest_row);
7557           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7558                                                      dest_row, selection_data))
7559             gtk_tree_path_up (dest_row);
7560         }
7561     }
7562
7563   if (selection_data->length >= 0)
7564     {
7565       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7566                                                  dest_row,
7567                                                  selection_data))
7568         accepted = TRUE;
7569     }
7570
7571   gtk_drag_finish (context,
7572                    accepted,
7573                    (context->action == GDK_ACTION_MOVE),
7574                    time);
7575
7576   if (gtk_tree_path_get_depth (dest_row) == 1
7577       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7578     {
7579       /* special special case drag to "0", scroll to first item */
7580       if (!tree_view->priv->scroll_to_path)
7581         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7582     }
7583
7584   gtk_tree_path_free (dest_row);
7585
7586   /* drop dest_row */
7587   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7588 }
7589
7590
7591
7592 /* GtkContainer Methods
7593  */
7594
7595
7596 static void
7597 gtk_tree_view_remove (GtkContainer *container,
7598                       GtkWidget    *widget)
7599 {
7600   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7601   GtkTreeViewChild *child = NULL;
7602   GList *tmp_list;
7603
7604   tmp_list = tree_view->priv->children;
7605   while (tmp_list)
7606     {
7607       child = tmp_list->data;
7608       if (child->widget == widget)
7609         {
7610           gtk_widget_unparent (widget);
7611
7612           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7613           g_list_free_1 (tmp_list);
7614           g_slice_free (GtkTreeViewChild, child);
7615           return;
7616         }
7617
7618       tmp_list = tmp_list->next;
7619     }
7620
7621   tmp_list = tree_view->priv->columns;
7622
7623   while (tmp_list)
7624     {
7625       GtkTreeViewColumn *column;
7626       column = tmp_list->data;
7627       if (column->button == widget)
7628         {
7629           gtk_widget_unparent (widget);
7630           return;
7631         }
7632       tmp_list = tmp_list->next;
7633     }
7634 }
7635
7636 static void
7637 gtk_tree_view_forall (GtkContainer *container,
7638                       gboolean      include_internals,
7639                       GtkCallback   callback,
7640                       gpointer      callback_data)
7641 {
7642   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7643   GtkTreeViewChild *child = NULL;
7644   GtkTreeViewColumn *column;
7645   GList *tmp_list;
7646
7647   tmp_list = tree_view->priv->children;
7648   while (tmp_list)
7649     {
7650       child = tmp_list->data;
7651       tmp_list = tmp_list->next;
7652
7653       (* callback) (child->widget, callback_data);
7654     }
7655   if (include_internals == FALSE)
7656     return;
7657
7658   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7659     {
7660       column = tmp_list->data;
7661
7662       if (column->button)
7663         (* callback) (column->button, callback_data);
7664     }
7665 }
7666
7667 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7668  * cells. If so we draw one big row-spanning focus rectangle.
7669  */
7670 static gboolean
7671 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7672 {
7673   GList *list;
7674
7675   for (list = tree_view->priv->columns; list; list = list->next)
7676     {
7677       if (!((GtkTreeViewColumn *)list->data)->visible)
7678         continue;
7679       if (_gtk_tree_view_column_count_special_cells (list->data))
7680         return TRUE;
7681     }
7682
7683   return FALSE;
7684 }
7685
7686 static void
7687 column_sizing_notify (GObject    *object,
7688                       GParamSpec *pspec,
7689                       gpointer    data)
7690 {
7691   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7692
7693   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7694     /* disable fixed height mode */
7695     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7696 }
7697
7698 /**
7699  * gtk_tree_view_set_fixed_height_mode:
7700  * @tree_view: a #GtkTreeView
7701  * @enable: %TRUE to enable fixed height mode
7702  *
7703  * Enables or disables the fixed height mode of @tree_view.
7704  * Fixed height mode speeds up #GtkTreeView by assuming that all
7705  * rows have the same height.
7706  * Only enable this option if all rows are the same height and all
7707  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7708  *
7709  * Since: 2.6
7710  **/
7711 void
7712 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7713                                      gboolean     enable)
7714 {
7715   GList *l;
7716
7717   enable = enable != FALSE;
7718
7719   if (enable == tree_view->priv->fixed_height_mode)
7720     return;
7721
7722   if (!enable)
7723     {
7724       tree_view->priv->fixed_height_mode = 0;
7725       tree_view->priv->fixed_height = -1;
7726
7727       /* force a revalidation */
7728       install_presize_handler (tree_view);
7729     }
7730   else
7731     {
7732       /* make sure all columns are of type FIXED */
7733       for (l = tree_view->priv->columns; l; l = l->next)
7734         {
7735           GtkTreeViewColumn *c = l->data;
7736
7737           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7738         }
7739
7740       /* yes, we really have to do this is in a separate loop */
7741       for (l = tree_view->priv->columns; l; l = l->next)
7742         g_signal_connect (l->data, "notify::sizing",
7743                           G_CALLBACK (column_sizing_notify), tree_view);
7744
7745       tree_view->priv->fixed_height_mode = 1;
7746       tree_view->priv->fixed_height = -1;
7747
7748       if (tree_view->priv->tree)
7749         initialize_fixed_height_mode (tree_view);
7750     }
7751
7752   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7753 }
7754
7755 /**
7756  * gtk_tree_view_get_fixed_height_mode:
7757  * @tree_view: a #GtkTreeView
7758  *
7759  * Returns whether fixed height mode is turned on for @tree_view.
7760  *
7761  * Return value: %TRUE if @tree_view is in fixed height mode
7762  *
7763  * Since: 2.6
7764  **/
7765 gboolean
7766 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7767 {
7768   return tree_view->priv->fixed_height_mode;
7769 }
7770
7771 /* Returns TRUE if the focus is within the headers, after the focus operation is
7772  * done
7773  */
7774 static gboolean
7775 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7776                             GtkDirectionType  dir,
7777                             gboolean          clamp_column_visible)
7778 {
7779   GtkWidget *focus_child;
7780
7781   GList *last_column, *first_column;
7782   GList *tmp_list;
7783   gboolean rtl;
7784
7785   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7786     return FALSE;
7787
7788   focus_child = GTK_CONTAINER (tree_view)->focus_child;
7789
7790   first_column = tree_view->priv->columns;
7791   while (first_column)
7792     {
7793       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7794           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7795           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7796            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7797         break;
7798       first_column = first_column->next;
7799     }
7800
7801   /* No headers are visible, or are focusable.  We can't focus in or out.
7802    */
7803   if (first_column == NULL)
7804     return FALSE;
7805
7806   last_column = g_list_last (tree_view->priv->columns);
7807   while (last_column)
7808     {
7809       if (gtk_widget_get_can_focus (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7810           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7811           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7812            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7813         break;
7814       last_column = last_column->prev;
7815     }
7816
7817
7818   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7819
7820   switch (dir)
7821     {
7822     case GTK_DIR_TAB_BACKWARD:
7823     case GTK_DIR_TAB_FORWARD:
7824     case GTK_DIR_UP:
7825     case GTK_DIR_DOWN:
7826       if (focus_child == NULL)
7827         {
7828           if (tree_view->priv->focus_column != NULL &&
7829               gtk_widget_get_can_focus (tree_view->priv->focus_column->button))
7830             focus_child = tree_view->priv->focus_column->button;
7831           else
7832             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7833           gtk_widget_grab_focus (focus_child);
7834           break;
7835         }
7836       return FALSE;
7837
7838     case GTK_DIR_LEFT:
7839     case GTK_DIR_RIGHT:
7840       if (focus_child == NULL)
7841         {
7842           if (tree_view->priv->focus_column != NULL)
7843             focus_child = tree_view->priv->focus_column->button;
7844           else if (dir == GTK_DIR_LEFT)
7845             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7846           else
7847             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7848           gtk_widget_grab_focus (focus_child);
7849           break;
7850         }
7851
7852       if (gtk_widget_child_focus (focus_child, dir))
7853         {
7854           /* The focus moves inside the button. */
7855           /* This is probably a great example of bad UI */
7856           break;
7857         }
7858
7859       /* We need to move the focus among the row of buttons. */
7860       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7861         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7862           break;
7863
7864       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7865           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7866         {
7867           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7868           break;
7869         }
7870
7871       while (tmp_list)
7872         {
7873           GtkTreeViewColumn *column;
7874
7875           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7876             tmp_list = tmp_list->next;
7877           else
7878             tmp_list = tmp_list->prev;
7879
7880           if (tmp_list == NULL)
7881             {
7882               g_warning ("Internal button not found");
7883               break;
7884             }
7885           column = tmp_list->data;
7886           if (column->button &&
7887               column->visible &&
7888               gtk_widget_get_can_focus (column->button))
7889             {
7890               focus_child = column->button;
7891               gtk_widget_grab_focus (column->button);
7892               break;
7893             }
7894         }
7895       break;
7896     default:
7897       g_assert_not_reached ();
7898       break;
7899     }
7900
7901   /* if focus child is non-null, we assume it's been set to the current focus child
7902    */
7903   if (focus_child)
7904     {
7905       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7906         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7907           {
7908             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7909             break;
7910           }
7911
7912       if (clamp_column_visible)
7913         {
7914           gtk_tree_view_clamp_column_visible (tree_view,
7915                                               tree_view->priv->focus_column,
7916                                               FALSE);
7917         }
7918     }
7919
7920   return (focus_child != NULL);
7921 }
7922
7923 /* This function returns in 'path' the first focusable path, if the given path
7924  * is already focusable, it's the returned one.
7925  */
7926 static gboolean
7927 search_first_focusable_path (GtkTreeView  *tree_view,
7928                              GtkTreePath **path,
7929                              gboolean      search_forward,
7930                              GtkRBTree   **new_tree,
7931                              GtkRBNode   **new_node)
7932 {
7933   GtkRBTree *tree = NULL;
7934   GtkRBNode *node = NULL;
7935
7936   if (!path || !*path)
7937     return FALSE;
7938
7939   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7940
7941   if (!tree || !node)
7942     return FALSE;
7943
7944   while (node && row_is_separator (tree_view, NULL, *path))
7945     {
7946       if (search_forward)
7947         _gtk_rbtree_next_full (tree, node, &tree, &node);
7948       else
7949         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7950
7951       if (*path)
7952         gtk_tree_path_free (*path);
7953
7954       if (node)
7955         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7956       else
7957         *path = NULL;
7958     }
7959
7960   if (new_tree)
7961     *new_tree = tree;
7962
7963   if (new_node)
7964     *new_node = node;
7965
7966   return (*path != NULL);
7967 }
7968
7969 static gint
7970 gtk_tree_view_focus (GtkWidget        *widget,
7971                      GtkDirectionType  direction)
7972 {
7973   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7974   GtkContainer *container = GTK_CONTAINER (widget);
7975   GtkWidget *focus_child;
7976
7977   if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_can_focus (widget))
7978     return FALSE;
7979
7980   focus_child = container->focus_child;
7981
7982   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7983   /* Case 1.  Headers currently have focus. */
7984   if (focus_child)
7985     {
7986       switch (direction)
7987         {
7988         case GTK_DIR_LEFT:
7989         case GTK_DIR_RIGHT:
7990           gtk_tree_view_header_focus (tree_view, direction, TRUE);
7991           return TRUE;
7992         case GTK_DIR_TAB_BACKWARD:
7993         case GTK_DIR_UP:
7994           return FALSE;
7995         case GTK_DIR_TAB_FORWARD:
7996         case GTK_DIR_DOWN:
7997           gtk_widget_grab_focus (widget);
7998           return TRUE;
7999         default:
8000           g_assert_not_reached ();
8001           return FALSE;
8002         }
8003     }
8004
8005   /* Case 2. We don't have focus at all. */
8006   if (!gtk_widget_has_focus (widget))
8007     {
8008       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
8009         gtk_widget_grab_focus (widget);
8010       return TRUE;
8011     }
8012
8013   /* Case 3. We have focus already. */
8014   if (direction == GTK_DIR_TAB_BACKWARD)
8015     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
8016   else if (direction == GTK_DIR_TAB_FORWARD)
8017     return FALSE;
8018
8019   /* Other directions caught by the keybindings */
8020   gtk_widget_grab_focus (widget);
8021   return TRUE;
8022 }
8023
8024 static void
8025 gtk_tree_view_grab_focus (GtkWidget *widget)
8026 {
8027   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
8028
8029   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
8030 }
8031
8032 static void
8033 gtk_tree_view_style_set (GtkWidget *widget,
8034                          GtkStyle *previous_style)
8035 {
8036   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
8037   GList *list;
8038   GtkTreeViewColumn *column;
8039
8040   if (gtk_widget_get_realized (widget))
8041     {
8042       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
8043       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
8044       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
8045
8046       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
8047       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
8048     }
8049
8050   gtk_widget_style_get (widget,
8051                         "expander-size", &tree_view->priv->expander_size,
8052                         NULL);
8053   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
8054
8055   for (list = tree_view->priv->columns; list; list = list->next)
8056     {
8057       column = list->data;
8058       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8059     }
8060
8061   tree_view->priv->fixed_height = -1;
8062   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
8063
8064   gtk_widget_queue_resize (widget);
8065 }
8066
8067
8068 static void
8069 gtk_tree_view_set_focus_child (GtkContainer *container,
8070                                GtkWidget    *child)
8071 {
8072   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
8073   GList *list;
8074
8075   for (list = tree_view->priv->columns; list; list = list->next)
8076     {
8077       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
8078         {
8079           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
8080           break;
8081         }
8082     }
8083
8084   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
8085 }
8086
8087 static void
8088 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
8089                                GtkAdjustment *hadj,
8090                                GtkAdjustment *vadj)
8091 {
8092   gboolean need_adjust = FALSE;
8093
8094   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8095
8096   if (hadj)
8097     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
8098   else
8099     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8100   if (vadj)
8101     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
8102   else
8103     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
8104
8105   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
8106     {
8107       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
8108                                             gtk_tree_view_adjustment_changed,
8109                                             tree_view);
8110       g_object_unref (tree_view->priv->hadjustment);
8111     }
8112
8113   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8114     {
8115       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8116                                             gtk_tree_view_adjustment_changed,
8117                                             tree_view);
8118       g_object_unref (tree_view->priv->vadjustment);
8119     }
8120
8121   if (tree_view->priv->hadjustment != hadj)
8122     {
8123       tree_view->priv->hadjustment = hadj;
8124       g_object_ref_sink (tree_view->priv->hadjustment);
8125
8126       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8127                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8128                         tree_view);
8129       need_adjust = TRUE;
8130     }
8131
8132   if (tree_view->priv->vadjustment != vadj)
8133     {
8134       tree_view->priv->vadjustment = vadj;
8135       g_object_ref_sink (tree_view->priv->vadjustment);
8136
8137       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8138                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8139                         tree_view);
8140       need_adjust = TRUE;
8141     }
8142
8143   if (need_adjust)
8144     gtk_tree_view_adjustment_changed (NULL, tree_view);
8145 }
8146
8147
8148 static gboolean
8149 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8150                                 GtkMovementStep    step,
8151                                 gint               count)
8152 {
8153   GdkModifierType state;
8154
8155   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8156   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8157                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8158                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8159                         step == GTK_MOVEMENT_PAGES ||
8160                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8161
8162   if (tree_view->priv->tree == NULL)
8163     return FALSE;
8164   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
8165     return FALSE;
8166
8167   gtk_tree_view_stop_editing (tree_view, FALSE);
8168   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8169   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8170
8171   if (gtk_get_current_event_state (&state))
8172     {
8173       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8174         tree_view->priv->ctrl_pressed = TRUE;
8175       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8176         tree_view->priv->shift_pressed = TRUE;
8177     }
8178   /* else we assume not pressed */
8179
8180   switch (step)
8181     {
8182       /* currently we make no distinction.  When we go bi-di, we need to */
8183     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8184     case GTK_MOVEMENT_VISUAL_POSITIONS:
8185       gtk_tree_view_move_cursor_left_right (tree_view, count);
8186       break;
8187     case GTK_MOVEMENT_DISPLAY_LINES:
8188       gtk_tree_view_move_cursor_up_down (tree_view, count);
8189       break;
8190     case GTK_MOVEMENT_PAGES:
8191       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8192       break;
8193     case GTK_MOVEMENT_BUFFER_ENDS:
8194       gtk_tree_view_move_cursor_start_end (tree_view, count);
8195       break;
8196     default:
8197       g_assert_not_reached ();
8198     }
8199
8200   tree_view->priv->ctrl_pressed = FALSE;
8201   tree_view->priv->shift_pressed = FALSE;
8202
8203   return TRUE;
8204 }
8205
8206 static void
8207 gtk_tree_view_put (GtkTreeView *tree_view,
8208                    GtkWidget   *child_widget,
8209                    /* in bin_window coordinates */
8210                    gint         x,
8211                    gint         y,
8212                    gint         width,
8213                    gint         height)
8214 {
8215   GtkTreeViewChild *child;
8216
8217   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8218   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8219
8220   child = g_slice_new (GtkTreeViewChild);
8221
8222   child->widget = child_widget;
8223   child->x = x;
8224   child->y = y;
8225   child->width = width;
8226   child->height = height;
8227
8228   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8229
8230   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8231     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8232
8233   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8234 }
8235
8236 void
8237 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8238                                   GtkWidget   *widget,
8239                                   /* in tree coordinates */
8240                                   gint         x,
8241                                   gint         y,
8242                                   gint         width,
8243                                   gint         height)
8244 {
8245   GtkTreeViewChild *child = NULL;
8246   GList *list;
8247   GdkRectangle allocation;
8248
8249   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8250   g_return_if_fail (GTK_IS_WIDGET (widget));
8251
8252   for (list = tree_view->priv->children; list; list = list->next)
8253     {
8254       if (((GtkTreeViewChild *)list->data)->widget == widget)
8255         {
8256           child = list->data;
8257           break;
8258         }
8259     }
8260   if (child == NULL)
8261     return;
8262
8263   allocation.x = child->x = x;
8264   allocation.y = child->y = y;
8265   allocation.width = child->width = width;
8266   allocation.height = child->height = height;
8267
8268   if (gtk_widget_get_realized (widget))
8269     gtk_widget_size_allocate (widget, &allocation);
8270 }
8271
8272
8273 /* TreeModel Callbacks
8274  */
8275
8276 static void
8277 gtk_tree_view_row_changed (GtkTreeModel *model,
8278                            GtkTreePath  *path,
8279                            GtkTreeIter  *iter,
8280                            gpointer      data)
8281 {
8282   GtkTreeView *tree_view = (GtkTreeView *)data;
8283   GtkRBTree *tree;
8284   GtkRBNode *node;
8285   gboolean free_path = FALSE;
8286   GList *list;
8287   GtkTreePath *cursor_path;
8288
8289   g_return_if_fail (path != NULL || iter != NULL);
8290
8291   if (tree_view->priv->cursor != NULL)
8292     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8293   else
8294     cursor_path = NULL;
8295
8296   if (tree_view->priv->edited_column &&
8297       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8298     gtk_tree_view_stop_editing (tree_view, TRUE);
8299
8300   if (cursor_path != NULL)
8301     gtk_tree_path_free (cursor_path);
8302
8303   if (path == NULL)
8304     {
8305       path = gtk_tree_model_get_path (model, iter);
8306       free_path = TRUE;
8307     }
8308   else if (iter == NULL)
8309     gtk_tree_model_get_iter (model, iter, path);
8310
8311   if (_gtk_tree_view_find_node (tree_view,
8312                                 path,
8313                                 &tree,
8314                                 &node))
8315     /* We aren't actually showing the node */
8316     goto done;
8317
8318   if (tree == NULL)
8319     goto done;
8320
8321   if (tree_view->priv->fixed_height_mode
8322       && tree_view->priv->fixed_height >= 0)
8323     {
8324       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8325       if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8326         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8327     }
8328   else
8329     {
8330       _gtk_rbtree_node_mark_invalid (tree, node);
8331       for (list = tree_view->priv->columns; list; list = list->next)
8332         {
8333           GtkTreeViewColumn *column;
8334
8335           column = list->data;
8336           if (! column->visible)
8337             continue;
8338
8339           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8340             {
8341               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8342             }
8343         }
8344     }
8345
8346  done:
8347   if (!tree_view->priv->fixed_height_mode &&
8348       gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8349     install_presize_handler (tree_view);
8350   if (free_path)
8351     gtk_tree_path_free (path);
8352 }
8353
8354 static void
8355 gtk_tree_view_row_inserted (GtkTreeModel *model,
8356                             GtkTreePath  *path,
8357                             GtkTreeIter  *iter,
8358                             gpointer      data)
8359 {
8360   GtkTreeView *tree_view = (GtkTreeView *) data;
8361   gint *indices;
8362   GtkRBTree *tmptree, *tree;
8363   GtkRBNode *tmpnode = NULL;
8364   gint depth;
8365   gint i = 0;
8366   gint height;
8367   gboolean free_path = FALSE;
8368   gboolean node_visible = TRUE;
8369
8370   g_return_if_fail (path != NULL || iter != NULL);
8371
8372   if (tree_view->priv->fixed_height_mode
8373       && tree_view->priv->fixed_height >= 0)
8374     height = tree_view->priv->fixed_height;
8375   else
8376     height = 0;
8377
8378   if (path == NULL)
8379     {
8380       path = gtk_tree_model_get_path (model, iter);
8381       free_path = TRUE;
8382     }
8383   else if (iter == NULL)
8384     gtk_tree_model_get_iter (model, iter, path);
8385
8386   if (tree_view->priv->tree == NULL)
8387     tree_view->priv->tree = _gtk_rbtree_new ();
8388
8389   tmptree = tree = tree_view->priv->tree;
8390
8391   /* Update all row-references */
8392   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8393   depth = gtk_tree_path_get_depth (path);
8394   indices = gtk_tree_path_get_indices (path);
8395
8396   /* First, find the parent tree */
8397   while (i < depth - 1)
8398     {
8399       if (tmptree == NULL)
8400         {
8401           /* We aren't showing the node */
8402           node_visible = FALSE;
8403           goto done;
8404         }
8405
8406       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8407       if (tmpnode == NULL)
8408         {
8409           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8410                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8411                      "before the parent was inserted.");
8412           goto done;
8413         }
8414       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8415         {
8416           /* FIXME enforce correct behavior on model, probably */
8417           /* In theory, the model should have emitted has_child_toggled here.  We
8418            * try to catch it anyway, just to be safe, in case the model hasn't.
8419            */
8420           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8421                                                            tree,
8422                                                            tmpnode);
8423           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8424           gtk_tree_path_free (tmppath);
8425           goto done;
8426         }
8427
8428       tmptree = tmpnode->children;
8429       tree = tmptree;
8430       i++;
8431     }
8432
8433   if (tree == NULL)
8434     {
8435       node_visible = FALSE;
8436       goto done;
8437     }
8438
8439   /* ref the node */
8440   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8441   if (indices[depth - 1] == 0)
8442     {
8443       tmpnode = _gtk_rbtree_find_count (tree, 1);
8444       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8445     }
8446   else
8447     {
8448       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8449       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8450     }
8451
8452  done:
8453   if (height > 0)
8454     {
8455       if (tree)
8456         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8457
8458       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8459         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8460       else
8461         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8462     }
8463   else
8464     install_presize_handler (tree_view);
8465   if (free_path)
8466     gtk_tree_path_free (path);
8467 }
8468
8469 static void
8470 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8471                                      GtkTreePath  *path,
8472                                      GtkTreeIter  *iter,
8473                                      gpointer      data)
8474 {
8475   GtkTreeView *tree_view = (GtkTreeView *)data;
8476   GtkTreeIter real_iter;
8477   gboolean has_child;
8478   GtkRBTree *tree;
8479   GtkRBNode *node;
8480   gboolean free_path = FALSE;
8481
8482   g_return_if_fail (path != NULL || iter != NULL);
8483
8484   if (iter)
8485     real_iter = *iter;
8486
8487   if (path == NULL)
8488     {
8489       path = gtk_tree_model_get_path (model, iter);
8490       free_path = TRUE;
8491     }
8492   else if (iter == NULL)
8493     gtk_tree_model_get_iter (model, &real_iter, path);
8494
8495   if (_gtk_tree_view_find_node (tree_view,
8496                                 path,
8497                                 &tree,
8498                                 &node))
8499     /* We aren't actually showing the node */
8500     goto done;
8501
8502   if (tree == NULL)
8503     goto done;
8504
8505   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8506   /* Sanity check.
8507    */
8508   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8509     goto done;
8510
8511   if (has_child)
8512     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8513   else
8514     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8515
8516   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8517     {
8518       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8519       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8520         {
8521           GList *list;
8522
8523           for (list = tree_view->priv->columns; list; list = list->next)
8524             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8525               {
8526                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8527                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8528                 break;
8529               }
8530         }
8531       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8532     }
8533   else
8534     {
8535       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8536     }
8537
8538  done:
8539   if (free_path)
8540     gtk_tree_path_free (path);
8541 }
8542
8543 static void
8544 count_children_helper (GtkRBTree *tree,
8545                        GtkRBNode *node,
8546                        gpointer   data)
8547 {
8548   if (node->children)
8549     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8550   (*((gint *)data))++;
8551 }
8552
8553 static void
8554 check_selection_helper (GtkRBTree *tree,
8555                         GtkRBNode *node,
8556                         gpointer   data)
8557 {
8558   gint *value = (gint *)data;
8559
8560   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8561
8562   if (node->children && !*value)
8563     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8564 }
8565
8566 static void
8567 gtk_tree_view_row_deleted (GtkTreeModel *model,
8568                            GtkTreePath  *path,
8569                            gpointer      data)
8570 {
8571   GtkTreeView *tree_view = (GtkTreeView *)data;
8572   GtkRBTree *tree;
8573   GtkRBNode *node;
8574   GList *list;
8575   gint selection_changed = FALSE;
8576
8577   g_return_if_fail (path != NULL);
8578
8579   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8580
8581   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8582     return;
8583
8584   if (tree == NULL)
8585     return;
8586
8587   /* check if the selection has been changed */
8588   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8589                         check_selection_helper, &selection_changed);
8590
8591   for (list = tree_view->priv->columns; list; list = list->next)
8592     if (((GtkTreeViewColumn *)list->data)->visible &&
8593         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8594       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8595
8596   /* Ensure we don't have a dangling pointer to a dead node */
8597   ensure_unprelighted (tree_view);
8598
8599   /* Cancel editting if we've started */
8600   gtk_tree_view_stop_editing (tree_view, TRUE);
8601
8602   /* If we have a node expanded/collapsed timeout, remove it */
8603   remove_expand_collapse_timeout (tree_view);
8604
8605   if (tree_view->priv->destroy_count_func)
8606     {
8607       gint child_count = 0;
8608       if (node->children)
8609         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8610       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8611     }
8612
8613   if (tree->root->count == 1)
8614     {
8615       if (tree_view->priv->tree == tree)
8616         tree_view->priv->tree = NULL;
8617
8618       _gtk_rbtree_remove (tree);
8619     }
8620   else
8621     {
8622       _gtk_rbtree_remove_node (tree, node);
8623     }
8624
8625   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8626     {
8627       gtk_tree_row_reference_free (tree_view->priv->top_row);
8628       tree_view->priv->top_row = NULL;
8629     }
8630
8631   install_scroll_sync_handler (tree_view);
8632
8633   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8634
8635   if (selection_changed)
8636     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8637 }
8638
8639 static void
8640 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8641                               GtkTreePath  *parent,
8642                               GtkTreeIter  *iter,
8643                               gint         *new_order,
8644                               gpointer      data)
8645 {
8646   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8647   GtkRBTree *tree;
8648   GtkRBNode *node;
8649   gint len;
8650
8651   len = gtk_tree_model_iter_n_children (model, iter);
8652
8653   if (len < 2)
8654     return;
8655
8656   gtk_tree_row_reference_reordered (G_OBJECT (data),
8657                                     parent,
8658                                     iter,
8659                                     new_order);
8660
8661   if (_gtk_tree_view_find_node (tree_view,
8662                                 parent,
8663                                 &tree,
8664                                 &node))
8665     return;
8666
8667   /* We need to special case the parent path */
8668   if (tree == NULL)
8669     tree = tree_view->priv->tree;
8670   else
8671     tree = node->children;
8672
8673   if (tree == NULL)
8674     return;
8675
8676   if (tree_view->priv->edited_column)
8677     gtk_tree_view_stop_editing (tree_view, TRUE);
8678
8679   /* we need to be unprelighted */
8680   ensure_unprelighted (tree_view);
8681
8682   /* clear the timeout */
8683   cancel_arrow_animation (tree_view);
8684
8685   _gtk_rbtree_reorder (tree, new_order, len);
8686
8687   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8688
8689   gtk_tree_view_dy_to_top_row (tree_view);
8690 }
8691
8692
8693 /* Internal tree functions
8694  */
8695
8696
8697 static void
8698 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8699                                      GtkRBTree         *tree,
8700                                      GtkTreeViewColumn *column,
8701                                      gint              *x1,
8702                                      gint              *x2)
8703 {
8704   GtkTreeViewColumn *tmp_column = NULL;
8705   gint total_width;
8706   GList *list;
8707   gboolean rtl;
8708
8709   if (x1)
8710     *x1 = 0;
8711
8712   if (x2)
8713     *x2 = 0;
8714
8715   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8716
8717   total_width = 0;
8718   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8719        list;
8720        list = (rtl ? list->prev : list->next))
8721     {
8722       tmp_column = list->data;
8723
8724       if (tmp_column == column)
8725         break;
8726
8727       if (tmp_column->visible)
8728         total_width += tmp_column->width;
8729     }
8730
8731   if (tmp_column != column)
8732     {
8733       g_warning (G_STRLOC": passed-in column isn't in the tree");
8734       return;
8735     }
8736
8737   if (x1)
8738     *x1 = total_width;
8739
8740   if (x2)
8741     {
8742       if (column->visible)
8743         *x2 = total_width + column->width;
8744       else
8745         *x2 = total_width; /* width of 0 */
8746     }
8747 }
8748 static void
8749 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8750                                 GtkRBTree   *tree,
8751                                 gint        *x1,
8752                                 gint        *x2)
8753 {
8754   gint x_offset = 0;
8755   GList *list;
8756   GtkTreeViewColumn *tmp_column = NULL;
8757   gint total_width;
8758   gboolean indent_expanders;
8759   gboolean rtl;
8760
8761   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8762
8763   total_width = 0;
8764   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8765        list;
8766        list = (rtl ? list->prev : list->next))
8767     {
8768       tmp_column = list->data;
8769
8770       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8771         {
8772           if (rtl)
8773             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8774           else
8775             x_offset = total_width;
8776           break;
8777         }
8778
8779       if (tmp_column->visible)
8780         total_width += tmp_column->width;
8781     }
8782
8783   gtk_widget_style_get (GTK_WIDGET (tree_view),
8784                         "indent-expanders", &indent_expanders,
8785                         NULL);
8786
8787   if (indent_expanders)
8788     {
8789       if (rtl)
8790         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8791       else
8792         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8793     }
8794
8795   *x1 = x_offset;
8796
8797   if (tmp_column && tmp_column->visible)
8798     /* +1 because x2 isn't included in the range. */
8799     *x2 = *x1 + tree_view->priv->expander_size + 1;
8800   else
8801     *x2 = *x1;
8802 }
8803
8804 static void
8805 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8806                           GtkRBTree   *tree,
8807                           GtkTreeIter *iter,
8808                           gint         depth,
8809                           gboolean     recurse)
8810 {
8811   GtkRBNode *temp = NULL;
8812   GtkTreePath *path = NULL;
8813   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8814
8815   do
8816     {
8817       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8818       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8819
8820       if (tree_view->priv->fixed_height > 0)
8821         {
8822           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8823             {
8824               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8825               _gtk_rbtree_node_mark_valid (tree, temp);
8826             }
8827         }
8828
8829       if (is_list)
8830         continue;
8831
8832       if (recurse)
8833         {
8834           GtkTreeIter child;
8835
8836           if (!path)
8837             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8838           else
8839             gtk_tree_path_next (path);
8840
8841           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8842             {
8843               gboolean expand;
8844
8845               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8846
8847               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8848                   && !expand)
8849                 {
8850                   temp->children = _gtk_rbtree_new ();
8851                   temp->children->parent_tree = tree;
8852                   temp->children->parent_node = temp;
8853                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8854                 }
8855             }
8856         }
8857
8858       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8859         {
8860           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8861             temp->flags ^= GTK_RBNODE_IS_PARENT;
8862         }
8863     }
8864   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8865
8866   if (path)
8867     gtk_tree_path_free (path);
8868 }
8869
8870 /* Make sure the node is visible vertically */
8871 static void
8872 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8873                                   GtkRBTree   *tree,
8874                                   GtkRBNode   *node)
8875 {
8876   gint node_dy, height;
8877   GtkTreePath *path = NULL;
8878
8879   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
8880     return;
8881
8882   /* just return if the node is visible, avoiding a costly expose */
8883   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8884   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8885   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8886       && node_dy >= tree_view->priv->vadjustment->value
8887       && node_dy + height <= (tree_view->priv->vadjustment->value
8888                               + tree_view->priv->vadjustment->page_size))
8889     return;
8890
8891   path = _gtk_tree_view_find_path (tree_view, tree, node);
8892   if (path)
8893     {
8894       /* We process updates because we want to clear old selected items when we scroll.
8895        * if this is removed, we get a "selection streak" at the bottom. */
8896       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8897       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8898       gtk_tree_path_free (path);
8899     }
8900 }
8901
8902 static void
8903 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8904                                     GtkTreeViewColumn *column,
8905                                     gboolean           focus_to_cell)
8906 {
8907   gint x, width;
8908
8909   if (column == NULL)
8910     return;
8911
8912   x = column->button->allocation.x;
8913   width = column->button->allocation.width;
8914
8915   if (width > tree_view->priv->hadjustment->page_size)
8916     {
8917       /* The column is larger than the horizontal page size.  If the
8918        * column has cells which can be focussed individually, then we make
8919        * sure the cell which gets focus is fully visible (if even the
8920        * focus cell is bigger than the page size, we make sure the
8921        * left-hand side of the cell is visible).
8922        *
8923        * If the column does not have those so-called special cells, we
8924        * make sure the left-hand side of the column is visible.
8925        */
8926
8927       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8928         {
8929           GtkTreePath *cursor_path;
8930           GdkRectangle background_area, cell_area, focus_area;
8931
8932           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8933
8934           gtk_tree_view_get_cell_area (tree_view,
8935                                        cursor_path, column, &cell_area);
8936           gtk_tree_view_get_background_area (tree_view,
8937                                              cursor_path, column,
8938                                              &background_area);
8939
8940           gtk_tree_path_free (cursor_path);
8941
8942           _gtk_tree_view_column_get_focus_area (column,
8943                                                 &background_area,
8944                                                 &cell_area,
8945                                                 &focus_area);
8946
8947           x = focus_area.x;
8948           width = focus_area.width;
8949
8950           if (width < tree_view->priv->hadjustment->page_size)
8951             {
8952               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8953                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8954                                           x + width - tree_view->priv->hadjustment->page_size);
8955               else if (tree_view->priv->hadjustment->value > x)
8956                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8957             }
8958         }
8959
8960       gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8961     }
8962   else
8963     {
8964       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8965           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8966                                     x + width - tree_view->priv->hadjustment->page_size);
8967       else if (tree_view->priv->hadjustment->value > x)
8968         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8969   }
8970 }
8971
8972 /* This function could be more efficient.  I'll optimize it if profiling seems
8973  * to imply that it is important */
8974 GtkTreePath *
8975 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8976                           GtkRBTree   *tree,
8977                           GtkRBNode   *node)
8978 {
8979   GtkTreePath *path;
8980   GtkRBTree *tmp_tree;
8981   GtkRBNode *tmp_node, *last;
8982   gint count;
8983
8984   path = gtk_tree_path_new ();
8985
8986   g_return_val_if_fail (node != NULL, path);
8987   g_return_val_if_fail (node != tree->nil, path);
8988
8989   count = 1 + node->left->count;
8990
8991   last = node;
8992   tmp_node = node->parent;
8993   tmp_tree = tree;
8994   while (tmp_tree)
8995     {
8996       while (tmp_node != tmp_tree->nil)
8997         {
8998           if (tmp_node->right == last)
8999             count += 1 + tmp_node->left->count;
9000           last = tmp_node;
9001           tmp_node = tmp_node->parent;
9002         }
9003       gtk_tree_path_prepend_index (path, count - 1);
9004       last = tmp_tree->parent_node;
9005       tmp_tree = tmp_tree->parent_tree;
9006       if (last)
9007         {
9008           count = 1 + last->left->count;
9009           tmp_node = last->parent;
9010         }
9011     }
9012   return path;
9013 }
9014
9015 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
9016  * invalid (ie. points to a node that's not in the tree), *tree and *node are
9017  * both set to NULL.
9018  */
9019 gboolean
9020 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
9021                           GtkTreePath  *path,
9022                           GtkRBTree   **tree,
9023                           GtkRBNode   **node)
9024 {
9025   GtkRBNode *tmpnode = NULL;
9026   GtkRBTree *tmptree = tree_view->priv->tree;
9027   gint *indices = gtk_tree_path_get_indices (path);
9028   gint depth = gtk_tree_path_get_depth (path);
9029   gint i = 0;
9030
9031   *node = NULL;
9032   *tree = NULL;
9033
9034   if (depth == 0 || tmptree == NULL)
9035     return FALSE;
9036   do
9037     {
9038       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
9039       ++i;
9040       if (tmpnode == NULL)
9041         {
9042           *tree = NULL;
9043           *node = NULL;
9044           return FALSE;
9045         }
9046       if (i >= depth)
9047         {
9048           *tree = tmptree;
9049           *node = tmpnode;
9050           return FALSE;
9051         }
9052       *tree = tmptree;
9053       *node = tmpnode;
9054       tmptree = tmpnode->children;
9055       if (tmptree == NULL)
9056         return TRUE;
9057     }
9058   while (1);
9059 }
9060
9061 static gboolean
9062 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
9063                                   GtkTreeViewColumn *column)
9064 {
9065   GList *list;
9066
9067   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
9068     return FALSE;
9069
9070   if (tree_view->priv->expander_column != NULL)
9071     {
9072       if (tree_view->priv->expander_column == column)
9073         return TRUE;
9074       return FALSE;
9075     }
9076   else
9077     {
9078       for (list = tree_view->priv->columns;
9079            list;
9080            list = list->next)
9081         if (((GtkTreeViewColumn *)list->data)->visible)
9082           break;
9083       if (list && list->data == column)
9084         return TRUE;
9085     }
9086   return FALSE;
9087 }
9088
9089 static void
9090 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
9091                                 guint           keyval,
9092                                 guint           modmask,
9093                                 gboolean        add_shifted_binding,
9094                                 GtkMovementStep step,
9095                                 gint            count)
9096 {
9097
9098   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
9099                                 "move-cursor", 2,
9100                                 G_TYPE_ENUM, step,
9101                                 G_TYPE_INT, count);
9102
9103   if (add_shifted_binding)
9104     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
9105                                   "move-cursor", 2,
9106                                   G_TYPE_ENUM, step,
9107                                   G_TYPE_INT, count);
9108
9109   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
9110    return;
9111
9112   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9113                                 "move-cursor", 2,
9114                                 G_TYPE_ENUM, step,
9115                                 G_TYPE_INT, count);
9116
9117   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9118                                 "move-cursor", 2,
9119                                 G_TYPE_ENUM, step,
9120                                 G_TYPE_INT, count);
9121 }
9122
9123 static gint
9124 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9125                                  GtkTreeIter  *iter,
9126                                  GtkRBTree    *tree,
9127                                  GtkRBNode    *node)
9128 {
9129   gint retval = FALSE;
9130   do
9131     {
9132       g_return_val_if_fail (node != NULL, FALSE);
9133
9134       if (node->children)
9135         {
9136           GtkTreeIter child;
9137           GtkRBTree *new_tree;
9138           GtkRBNode *new_node;
9139
9140           new_tree = node->children;
9141           new_node = new_tree->root;
9142
9143           while (new_node && new_node->left != new_tree->nil)
9144             new_node = new_node->left;
9145
9146           if (!gtk_tree_model_iter_children (model, &child, iter))
9147             return FALSE;
9148
9149           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9150         }
9151
9152       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9153         retval = TRUE;
9154       gtk_tree_model_unref_node (model, iter);
9155       node = _gtk_rbtree_next (tree, node);
9156     }
9157   while (gtk_tree_model_iter_next (model, iter));
9158
9159   return retval;
9160 }
9161
9162 static gint
9163 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9164                                               GtkRBTree   *tree)
9165 {
9166   GtkTreeIter iter;
9167   GtkTreePath *path;
9168   GtkRBNode *node;
9169   gint retval;
9170
9171   if (!tree)
9172     return FALSE;
9173
9174   node = tree->root;
9175   while (node && node->left != tree->nil)
9176     node = node->left;
9177
9178   g_return_val_if_fail (node != NULL, FALSE);
9179   path = _gtk_tree_view_find_path (tree_view, tree, node);
9180   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9181                            &iter, path);
9182   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9183   gtk_tree_path_free (path);
9184
9185   return retval;
9186 }
9187
9188 static void
9189 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9190                                     GtkTreeViewColumn *column)
9191 {
9192   GtkTreeViewColumn *left_column;
9193   GtkTreeViewColumn *cur_column = NULL;
9194   GtkTreeViewColumnReorder *reorder;
9195   gboolean rtl;
9196   GList *tmp_list;
9197   gint left;
9198
9199   /* We want to precalculate the motion list such that we know what column slots
9200    * are available.
9201    */
9202   left_column = NULL;
9203   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9204
9205   /* First, identify all possible drop spots */
9206   if (rtl)
9207     tmp_list = g_list_last (tree_view->priv->columns);
9208   else
9209     tmp_list = g_list_first (tree_view->priv->columns);
9210
9211   while (tmp_list)
9212     {
9213       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9214       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9215
9216       if (cur_column->visible == FALSE)
9217         continue;
9218
9219       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9220       if (left_column != column && cur_column != column &&
9221           tree_view->priv->column_drop_func &&
9222           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9223         {
9224           left_column = cur_column;
9225           continue;
9226         }
9227       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9228       reorder->left_column = left_column;
9229       left_column = reorder->right_column = cur_column;
9230
9231       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9232     }
9233
9234   /* Add the last one */
9235   if (tree_view->priv->column_drop_func == NULL ||
9236       ((left_column != column) &&
9237        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9238     {
9239       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9240       reorder->left_column = left_column;
9241       reorder->right_column = NULL;
9242       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9243     }
9244
9245   /* We quickly check to see if it even makes sense to reorder columns. */
9246   /* If there is nothing that can be moved, then we return */
9247
9248   if (tree_view->priv->column_drag_info == NULL)
9249     return;
9250
9251   /* We know there are always 2 slots possbile, as you can always return column. */
9252   /* If that's all there is, return */
9253   if (tree_view->priv->column_drag_info->next == NULL ||
9254       (tree_view->priv->column_drag_info->next->next == NULL &&
9255        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9256        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9257     {
9258       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9259         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9260       g_list_free (tree_view->priv->column_drag_info);
9261       tree_view->priv->column_drag_info = NULL;
9262       return;
9263     }
9264   /* We fill in the ranges for the columns, now that we've isolated them */
9265   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9266
9267   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9268     {
9269       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9270
9271       reorder->left_align = left;
9272       if (tmp_list->next != NULL)
9273         {
9274           g_assert (tmp_list->next->data);
9275           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9276                                          reorder->right_column->button->allocation.width +
9277                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9278         }
9279       else
9280         {
9281           gint width;
9282
9283           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9284           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9285         }
9286     }
9287 }
9288
9289 void
9290 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9291                                   GtkTreeViewColumn *column,
9292                                   GdkDevice         *device)
9293 {
9294   GdkEvent *send_event;
9295   GtkAllocation allocation;
9296   gint x, y, width, height;
9297   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9298   GdkDisplay *display = gdk_screen_get_display (screen);
9299
9300   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9301   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9302
9303   gtk_tree_view_set_column_drag_info (tree_view, column);
9304
9305   if (tree_view->priv->column_drag_info == NULL)
9306     return;
9307
9308   if (tree_view->priv->drag_window == NULL)
9309     {
9310       GdkWindowAttr attributes;
9311       guint attributes_mask;
9312
9313       attributes.window_type = GDK_WINDOW_CHILD;
9314       attributes.wclass = GDK_INPUT_OUTPUT;
9315       attributes.x = column->button->allocation.x;
9316       attributes.y = 0;
9317       attributes.width = column->button->allocation.width;
9318       attributes.height = column->button->allocation.height;
9319       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9320       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9321       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9322       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9323
9324       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9325                                                      &attributes,
9326                                                      attributes_mask);
9327       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9328     }
9329
9330   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9331   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9332
9333   gtk_grab_remove (column->button);
9334
9335   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9336   send_event->crossing.send_event = TRUE;
9337   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9338   send_event->crossing.subwindow = NULL;
9339   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9340   send_event->crossing.time = GDK_CURRENT_TIME;
9341   gdk_event_set_device (send_event, device);
9342
9343   gtk_propagate_event (column->button, send_event);
9344   gdk_event_free (send_event);
9345
9346   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9347   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9348   send_event->button.send_event = TRUE;
9349   send_event->button.time = GDK_CURRENT_TIME;
9350   send_event->button.x = -1;
9351   send_event->button.y = -1;
9352   send_event->button.axes = NULL;
9353   send_event->button.state = 0;
9354   send_event->button.button = 1;
9355   send_event->button.x_root = 0;
9356   send_event->button.y_root = 0;
9357   gdk_event_set_device (send_event, device);
9358
9359   gtk_propagate_event (column->button, send_event);
9360   gdk_event_free (send_event);
9361
9362   /* Kids, don't try this at home */
9363   g_object_ref (column->button);
9364   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9365   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9366   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9367   g_object_unref (column->button);
9368
9369   tree_view->priv->drag_column_x = column->button->allocation.x;
9370   allocation = column->button->allocation;
9371   allocation.x = 0;
9372   gtk_widget_size_allocate (column->button, &allocation);
9373   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9374
9375   tree_view->priv->drag_column = column;
9376   gdk_window_show (tree_view->priv->drag_window);
9377
9378   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9379   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9380
9381   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9382   while (gtk_events_pending ())
9383     gtk_main_iteration ();
9384
9385   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9386   gdk_pointer_grab (tree_view->priv->drag_window,
9387                     FALSE,
9388                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9389                     NULL, NULL, GDK_CURRENT_TIME);
9390   gdk_keyboard_grab (tree_view->priv->drag_window,
9391                      FALSE,
9392                      GDK_CURRENT_TIME);
9393 }
9394
9395 static void
9396 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9397                                 GtkRBTree          *tree,
9398                                 GtkRBNode          *node,
9399                                 const GdkRectangle *clip_rect)
9400 {
9401   GdkRectangle rect;
9402
9403   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9404     return;
9405
9406   rect.x = 0;
9407   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width));
9408
9409   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9410   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9411
9412   if (clip_rect)
9413     {
9414       GdkRectangle new_rect;
9415
9416       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9417
9418       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9419     }
9420   else
9421     {
9422       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9423     }
9424 }
9425
9426 void
9427 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9428                                 GtkRBTree          *tree,
9429                                 GtkRBNode          *node,
9430                                 const GdkRectangle *clip_rect)
9431 {
9432   GdkRectangle rect;
9433
9434   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
9435     return;
9436
9437   rect.x = 0;
9438   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9439
9440   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9441   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9442
9443   if (clip_rect)
9444     {
9445       GdkRectangle new_rect;
9446
9447       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9448
9449       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9450     }
9451   else
9452     {
9453       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9454     }
9455 }
9456
9457 static void
9458 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9459                                GtkTreePath        *path,
9460                                const GdkRectangle *clip_rect)
9461 {
9462   GtkRBTree *tree = NULL;
9463   GtkRBNode *node = NULL;
9464
9465   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9466
9467   if (tree)
9468     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9469 }
9470
9471 /* x and y are the mouse position
9472  */
9473 static void
9474 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9475                           GtkRBTree   *tree,
9476                           GtkRBNode   *node,
9477                           /* in bin_window coordinates */
9478                           gint         x,
9479                           gint         y)
9480 {
9481   GdkRectangle area;
9482   GtkStateType state;
9483   GtkWidget *widget;
9484   gint x_offset = 0;
9485   gint x2;
9486   gint vertical_separator;
9487   gint expander_size;
9488   GtkExpanderStyle expander_style;
9489
9490   widget = GTK_WIDGET (tree_view);
9491
9492   gtk_widget_style_get (widget,
9493                         "vertical-separator", &vertical_separator,
9494                         NULL);
9495   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9496
9497   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9498     return;
9499
9500   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9501
9502   area.x = x_offset;
9503   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9504   area.width = expander_size + 2;
9505   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9506
9507   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE)
9508     {
9509       state = GTK_STATE_INSENSITIVE;
9510     }
9511   else if (node == tree_view->priv->button_pressed_node)
9512     {
9513       if (x >= area.x && x <= (area.x + area.width) &&
9514           y >= area.y && y <= (area.y + area.height))
9515         state = GTK_STATE_ACTIVE;
9516       else
9517         state = GTK_STATE_NORMAL;
9518     }
9519   else
9520     {
9521       if (node == tree_view->priv->prelight_node &&
9522           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9523         state = GTK_STATE_PRELIGHT;
9524       else
9525         state = GTK_STATE_NORMAL;
9526     }
9527
9528   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9529     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9530   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9531     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9532   else if (node->children != NULL)
9533     expander_style = GTK_EXPANDER_EXPANDED;
9534   else
9535     expander_style = GTK_EXPANDER_COLLAPSED;
9536
9537   gtk_paint_expander (widget->style,
9538                       tree_view->priv->bin_window,
9539                       state,
9540                       &area,
9541                       widget,
9542                       "treeview",
9543                       area.x + area.width / 2,
9544                       area.y + area.height / 2,
9545                       expander_style);
9546 }
9547
9548 static void
9549 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9550
9551 {
9552   GtkTreePath *cursor_path;
9553
9554   if ((tree_view->priv->tree == NULL) ||
9555       (! gtk_widget_get_realized (GTK_WIDGET (tree_view))))
9556     return;
9557
9558   cursor_path = NULL;
9559   if (tree_view->priv->cursor)
9560     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9561
9562   if (cursor_path == NULL)
9563     {
9564       /* Consult the selection before defaulting to the
9565        * first focusable element
9566        */
9567       GList *selected_rows;
9568       GtkTreeModel *model;
9569       GtkTreeSelection *selection;
9570
9571       selection = gtk_tree_view_get_selection (tree_view);
9572       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9573
9574       if (selected_rows)
9575         {
9576           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9577           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9578           g_list_free (selected_rows);
9579         }
9580       else
9581         {
9582           cursor_path = gtk_tree_path_new_first ();
9583           search_first_focusable_path (tree_view, &cursor_path,
9584                                        TRUE, NULL, NULL);
9585         }
9586
9587       gtk_tree_row_reference_free (tree_view->priv->cursor);
9588       tree_view->priv->cursor = NULL;
9589
9590       if (cursor_path)
9591         {
9592           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9593             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9594           else
9595             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9596         }
9597     }
9598
9599   if (cursor_path)
9600     {
9601       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9602
9603       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9604       gtk_tree_path_free (cursor_path);
9605
9606       if (tree_view->priv->focus_column == NULL)
9607         {
9608           GList *list;
9609           for (list = tree_view->priv->columns; list; list = list->next)
9610             {
9611               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9612                 {
9613                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9614                   break;
9615                 }
9616             }
9617         }
9618     }
9619 }
9620
9621 static void
9622 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9623                                    gint         count)
9624 {
9625   gint selection_count;
9626   GtkRBTree *cursor_tree = NULL;
9627   GtkRBNode *cursor_node = NULL;
9628   GtkRBTree *new_cursor_tree = NULL;
9629   GtkRBNode *new_cursor_node = NULL;
9630   GtkTreePath *cursor_path = NULL;
9631   gboolean grab_focus = TRUE;
9632   gboolean selectable;
9633
9634   if (! gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9635     return;
9636
9637   cursor_path = NULL;
9638   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9639     /* FIXME: we lost the cursor; should we get the first? */
9640     return;
9641
9642   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9643   _gtk_tree_view_find_node (tree_view, cursor_path,
9644                             &cursor_tree, &cursor_node);
9645
9646   if (cursor_tree == NULL)
9647     /* FIXME: we lost the cursor; should we get the first? */
9648     return;
9649
9650   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9651   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9652                                                       cursor_node,
9653                                                       cursor_path);
9654
9655   if (selection_count == 0
9656       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9657       && !tree_view->priv->ctrl_pressed
9658       && selectable)
9659     {
9660       /* Don't move the cursor, but just select the current node */
9661       new_cursor_tree = cursor_tree;
9662       new_cursor_node = cursor_node;
9663     }
9664   else
9665     {
9666       if (count == -1)
9667         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9668                                &new_cursor_tree, &new_cursor_node);
9669       else
9670         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9671                                &new_cursor_tree, &new_cursor_node);
9672     }
9673
9674   gtk_tree_path_free (cursor_path);
9675
9676   if (new_cursor_node)
9677     {
9678       cursor_path = _gtk_tree_view_find_path (tree_view,
9679                                               new_cursor_tree, new_cursor_node);
9680
9681       search_first_focusable_path (tree_view, &cursor_path,
9682                                    (count != -1),
9683                                    &new_cursor_tree,
9684                                    &new_cursor_node);
9685
9686       if (cursor_path)
9687         gtk_tree_path_free (cursor_path);
9688     }
9689
9690   /*
9691    * If the list has only one item and multi-selection is set then select
9692    * the row (if not yet selected).
9693    */
9694   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9695       new_cursor_node == NULL)
9696     {
9697       if (count == -1)
9698         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9699                                &new_cursor_tree, &new_cursor_node);
9700       else
9701         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9702                                &new_cursor_tree, &new_cursor_node);
9703
9704       if (new_cursor_node == NULL
9705           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9706         {
9707           new_cursor_node = cursor_node;
9708           new_cursor_tree = cursor_tree;
9709         }
9710       else
9711         {
9712           new_cursor_node = NULL;
9713         }
9714     }
9715
9716   if (new_cursor_node)
9717     {
9718       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9719       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9720       gtk_tree_path_free (cursor_path);
9721     }
9722   else
9723     {
9724       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9725
9726       if (!tree_view->priv->shift_pressed)
9727         {
9728           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9729                                           count < 0 ?
9730                                           GTK_DIR_UP : GTK_DIR_DOWN))
9731             {
9732               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9733
9734               if (toplevel)
9735                 gtk_widget_child_focus (toplevel,
9736                                         count < 0 ?
9737                                         GTK_DIR_TAB_BACKWARD :
9738                                         GTK_DIR_TAB_FORWARD);
9739
9740               grab_focus = FALSE;
9741             }
9742         }
9743       else
9744         {
9745           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9746         }
9747     }
9748
9749   if (grab_focus)
9750     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9751 }
9752
9753 static void
9754 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9755                                         gint         count)
9756 {
9757   GtkRBTree *cursor_tree = NULL;
9758   GtkRBNode *cursor_node = NULL;
9759   GtkTreePath *old_cursor_path = NULL;
9760   GtkTreePath *cursor_path = NULL;
9761   GtkRBTree *start_cursor_tree = NULL;
9762   GtkRBNode *start_cursor_node = NULL;
9763   gint y;
9764   gint window_y;
9765   gint vertical_separator;
9766
9767   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9768     return;
9769
9770   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9771     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9772   else
9773     /* This is sorta weird.  Focus in should give us a cursor */
9774     return;
9775
9776   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9777   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9778                             &cursor_tree, &cursor_node);
9779
9780   if (cursor_tree == NULL)
9781     {
9782       /* FIXME: we lost the cursor.  Should we try to get one? */
9783       gtk_tree_path_free (old_cursor_path);
9784       return;
9785     }
9786   g_return_if_fail (cursor_node != NULL);
9787
9788   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9789   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9790   y += tree_view->priv->cursor_offset;
9791   y += count * (int)tree_view->priv->vadjustment->page_increment;
9792   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9793
9794   if (y >= tree_view->priv->height)
9795     y = tree_view->priv->height - 1;
9796
9797   tree_view->priv->cursor_offset =
9798     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9799                              &cursor_tree, &cursor_node);
9800
9801   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9802     {
9803       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9804                              &cursor_tree, &cursor_node);
9805       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9806     }
9807
9808   y -= tree_view->priv->cursor_offset;
9809   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9810
9811   start_cursor_tree = cursor_tree;
9812   start_cursor_node = cursor_node;
9813
9814   if (! search_first_focusable_path (tree_view, &cursor_path,
9815                                      (count != -1),
9816                                      &cursor_tree, &cursor_node))
9817     {
9818       /* It looks like we reached the end of the view without finding
9819        * a focusable row.  We will step backwards to find the last
9820        * focusable row.
9821        */
9822       cursor_tree = start_cursor_tree;
9823       cursor_node = start_cursor_node;
9824       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9825
9826       search_first_focusable_path (tree_view, &cursor_path,
9827                                    (count == -1),
9828                                    &cursor_tree, &cursor_node);
9829     }
9830
9831   if (!cursor_path)
9832     goto cleanup;
9833
9834   /* update y */
9835   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9836
9837   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9838
9839   y -= window_y;
9840   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9841   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9842   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9843
9844   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9845     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9846
9847   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9848
9849 cleanup:
9850   gtk_tree_path_free (old_cursor_path);
9851   gtk_tree_path_free (cursor_path);
9852 }
9853
9854 static void
9855 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9856                                       gint         count)
9857 {
9858   GtkRBTree *cursor_tree = NULL;
9859   GtkRBNode *cursor_node = NULL;
9860   GtkTreePath *cursor_path = NULL;
9861   GtkTreeViewColumn *column;
9862   GtkTreeIter iter;
9863   GList *list;
9864   gboolean found_column = FALSE;
9865   gboolean rtl;
9866
9867   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9868
9869   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9870     return;
9871
9872   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9873     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9874   else
9875     return;
9876
9877   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9878   if (cursor_tree == NULL)
9879     return;
9880   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9881     {
9882       gtk_tree_path_free (cursor_path);
9883       return;
9884     }
9885   gtk_tree_path_free (cursor_path);
9886
9887   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9888   if (tree_view->priv->focus_column)
9889     {
9890       for (; list; list = (rtl ? list->prev : list->next))
9891         {
9892           if (list->data == tree_view->priv->focus_column)
9893             break;
9894         }
9895     }
9896
9897   while (list)
9898     {
9899       gboolean left, right;
9900
9901       column = list->data;
9902       if (column->visible == FALSE)
9903         goto loop_end;
9904
9905       gtk_tree_view_column_cell_set_cell_data (column,
9906                                                tree_view->priv->model,
9907                                                &iter,
9908                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9909                                                cursor_node->children?TRUE:FALSE);
9910
9911       if (rtl)
9912         {
9913           right = list->prev ? TRUE : FALSE;
9914           left = list->next ? TRUE : FALSE;
9915         }
9916       else
9917         {
9918           left = list->prev ? TRUE : FALSE;
9919           right = list->next ? TRUE : FALSE;
9920         }
9921
9922       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9923         {
9924           tree_view->priv->focus_column = column;
9925           found_column = TRUE;
9926           break;
9927         }
9928     loop_end:
9929       if (count == 1)
9930         list = rtl ? list->prev : list->next;
9931       else
9932         list = rtl ? list->next : list->prev;
9933     }
9934
9935   if (found_column)
9936     {
9937       if (!gtk_tree_view_has_special_cell (tree_view))
9938         _gtk_tree_view_queue_draw_node (tree_view,
9939                                         cursor_tree,
9940                                         cursor_node,
9941                                         NULL);
9942       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9943       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9944     }
9945   else
9946     {
9947       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9948     }
9949
9950   gtk_tree_view_clamp_column_visible (tree_view,
9951                                       tree_view->priv->focus_column, TRUE);
9952 }
9953
9954 static void
9955 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9956                                      gint         count)
9957 {
9958   GtkRBTree *cursor_tree;
9959   GtkRBNode *cursor_node;
9960   GtkTreePath *path;
9961   GtkTreePath *old_path;
9962
9963   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
9964     return;
9965
9966   g_return_if_fail (tree_view->priv->tree != NULL);
9967
9968   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9969
9970   cursor_tree = tree_view->priv->tree;
9971   cursor_node = cursor_tree->root;
9972
9973   if (count == -1)
9974     {
9975       while (cursor_node && cursor_node->left != cursor_tree->nil)
9976         cursor_node = cursor_node->left;
9977
9978       /* Now go forward to find the first focusable row. */
9979       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9980       search_first_focusable_path (tree_view, &path,
9981                                    TRUE, &cursor_tree, &cursor_node);
9982     }
9983   else
9984     {
9985       do
9986         {
9987           while (cursor_node && cursor_node->right != cursor_tree->nil)
9988             cursor_node = cursor_node->right;
9989           if (cursor_node->children == NULL)
9990             break;
9991
9992           cursor_tree = cursor_node->children;
9993           cursor_node = cursor_tree->root;
9994         }
9995       while (1);
9996
9997       /* Now go backwards to find last focusable row. */
9998       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9999       search_first_focusable_path (tree_view, &path,
10000                                    FALSE, &cursor_tree, &cursor_node);
10001     }
10002
10003   if (!path)
10004     goto cleanup;
10005
10006   if (gtk_tree_path_compare (old_path, path))
10007     {
10008       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10009       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10010     }
10011   else
10012     {
10013       gtk_widget_error_bell (GTK_WIDGET (tree_view));
10014     }
10015
10016 cleanup:
10017   gtk_tree_path_free (old_path);
10018   gtk_tree_path_free (path);
10019 }
10020
10021 static gboolean
10022 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
10023 {
10024   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10025     return FALSE;
10026
10027   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10028     return FALSE;
10029
10030   gtk_tree_selection_select_all (tree_view->priv->selection);
10031
10032   return TRUE;
10033 }
10034
10035 static gboolean
10036 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
10037 {
10038   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10039     return FALSE;
10040
10041   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
10042     return FALSE;
10043
10044   gtk_tree_selection_unselect_all (tree_view->priv->selection);
10045
10046   return TRUE;
10047 }
10048
10049 static gboolean
10050 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
10051                                       gboolean     start_editing)
10052 {
10053   GtkRBTree *new_tree = NULL;
10054   GtkRBNode *new_node = NULL;
10055   GtkRBTree *cursor_tree = NULL;
10056   GtkRBNode *cursor_node = NULL;
10057   GtkTreePath *cursor_path = NULL;
10058   GtkTreeSelectMode mode = 0;
10059
10060   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10061     return FALSE;
10062
10063   if (tree_view->priv->cursor)
10064     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10065
10066   if (cursor_path == NULL)
10067     return FALSE;
10068
10069   _gtk_tree_view_find_node (tree_view, cursor_path,
10070                             &cursor_tree, &cursor_node);
10071
10072   if (cursor_tree == NULL)
10073     {
10074       gtk_tree_path_free (cursor_path);
10075       return FALSE;
10076     }
10077
10078   if (!tree_view->priv->shift_pressed && start_editing &&
10079       tree_view->priv->focus_column)
10080     {
10081       if (gtk_tree_view_start_editing (tree_view, cursor_path))
10082         {
10083           gtk_tree_path_free (cursor_path);
10084           return TRUE;
10085         }
10086     }
10087
10088   if (tree_view->priv->ctrl_pressed)
10089     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10090   if (tree_view->priv->shift_pressed)
10091     mode |= GTK_TREE_SELECT_MODE_EXTEND;
10092
10093   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10094                                             cursor_node,
10095                                             cursor_tree,
10096                                             cursor_path,
10097                                             mode,
10098                                             FALSE);
10099
10100   /* We bail out if the original (tree, node) don't exist anymore after
10101    * handling the selection-changed callback.  We do return TRUE because
10102    * the key press has been handled at this point.
10103    */
10104   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10105
10106   if (cursor_tree != new_tree || cursor_node != new_node)
10107     return FALSE;
10108
10109   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10110
10111   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10112   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
10113
10114   if (!tree_view->priv->shift_pressed)
10115     gtk_tree_view_row_activated (tree_view, cursor_path,
10116                                  tree_view->priv->focus_column);
10117
10118   gtk_tree_path_free (cursor_path);
10119
10120   return TRUE;
10121 }
10122
10123 static gboolean
10124 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10125 {
10126   GtkRBTree *new_tree = NULL;
10127   GtkRBNode *new_node = NULL;
10128   GtkRBTree *cursor_tree = NULL;
10129   GtkRBNode *cursor_node = NULL;
10130   GtkTreePath *cursor_path = NULL;
10131
10132   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10133     return FALSE;
10134
10135   cursor_path = NULL;
10136   if (tree_view->priv->cursor)
10137     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10138
10139   if (cursor_path == NULL)
10140     return FALSE;
10141
10142   _gtk_tree_view_find_node (tree_view, cursor_path,
10143                             &cursor_tree, &cursor_node);
10144   if (cursor_tree == NULL)
10145     {
10146       gtk_tree_path_free (cursor_path);
10147       return FALSE;
10148     }
10149
10150   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10151                                             cursor_node,
10152                                             cursor_tree,
10153                                             cursor_path,
10154                                             GTK_TREE_SELECT_MODE_TOGGLE,
10155                                             FALSE);
10156
10157   /* We bail out if the original (tree, node) don't exist anymore after
10158    * handling the selection-changed callback.  We do return TRUE because
10159    * the key press has been handled at this point.
10160    */
10161   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10162
10163   if (cursor_tree != new_tree || cursor_node != new_node)
10164     return FALSE;
10165
10166   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10167
10168   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10169   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10170   gtk_tree_path_free (cursor_path);
10171
10172   return TRUE;
10173 }
10174
10175 static gboolean
10176 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10177                                                gboolean     logical,
10178                                                gboolean     expand,
10179                                                gboolean     open_all)
10180 {
10181   GtkTreePath *cursor_path = NULL;
10182   GtkRBTree *tree;
10183   GtkRBNode *node;
10184
10185   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10186     return FALSE;
10187
10188   cursor_path = NULL;
10189   if (tree_view->priv->cursor)
10190     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10191
10192   if (cursor_path == NULL)
10193     return FALSE;
10194
10195   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10196     return FALSE;
10197
10198   /* Don't handle the event if we aren't an expander */
10199   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10200     return FALSE;
10201
10202   if (!logical
10203       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10204     expand = !expand;
10205
10206   if (expand)
10207     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10208   else
10209     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10210
10211   gtk_tree_path_free (cursor_path);
10212
10213   return TRUE;
10214 }
10215
10216 static gboolean
10217 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10218 {
10219   GtkRBTree *cursor_tree = NULL;
10220   GtkRBNode *cursor_node = NULL;
10221   GtkTreePath *cursor_path = NULL;
10222   GdkModifierType state;
10223
10224   if (!gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10225     goto out;
10226
10227   cursor_path = NULL;
10228   if (tree_view->priv->cursor)
10229     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10230
10231   if (cursor_path == NULL)
10232     goto out;
10233
10234   _gtk_tree_view_find_node (tree_view, cursor_path,
10235                             &cursor_tree, &cursor_node);
10236   if (cursor_tree == NULL)
10237     {
10238       gtk_tree_path_free (cursor_path);
10239       goto out;
10240     }
10241
10242   if (cursor_tree->parent_node)
10243     {
10244       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10245       cursor_node = cursor_tree->parent_node;
10246       cursor_tree = cursor_tree->parent_tree;
10247
10248       gtk_tree_path_up (cursor_path);
10249
10250       if (gtk_get_current_event_state (&state))
10251         {
10252           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10253             tree_view->priv->ctrl_pressed = TRUE;
10254         }
10255
10256       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10257       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10258
10259       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10260       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10261       gtk_tree_path_free (cursor_path);
10262
10263       tree_view->priv->ctrl_pressed = FALSE;
10264
10265       return TRUE;
10266     }
10267
10268  out:
10269
10270   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10271   return FALSE;
10272 }
10273
10274 static gboolean
10275 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10276 {
10277   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view, NULL);
10278   tree_view->priv->typeselect_flush_timeout = 0;
10279
10280   return FALSE;
10281 }
10282
10283 /* Cut and paste from gtkwindow.c */
10284 static void
10285 send_focus_change (GtkWidget *widget,
10286                    GdkDevice *device,
10287                    gboolean   in)
10288 {
10289   GdkDeviceManager *device_manager;
10290   GList *devices, *d;
10291
10292   device_manager = gdk_display_get_device_manager (gtk_widget_get_display (widget));
10293   devices = gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_MASTER);
10294   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_SLAVE));
10295   devices = g_list_concat (devices, gdk_device_manager_list_devices (device_manager, GDK_DEVICE_TYPE_FLOATING));
10296
10297   for (d = devices; d; d = d->next)
10298     {
10299       GdkDevice *dev = d->data;
10300       GdkEvent *fevent;
10301
10302       if (dev->source != GDK_SOURCE_KEYBOARD)
10303         continue;
10304
10305       /* Skip non-master keyboards that haven't
10306        * selected for events from this window
10307        */
10308       if (gdk_device_get_device_type (dev) != GDK_DEVICE_TYPE_MASTER &&
10309           !gdk_window_get_device_events (widget->window, dev))
10310         continue;
10311
10312       fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10313
10314       fevent->focus_change.type = GDK_FOCUS_CHANGE;
10315       fevent->focus_change.window = g_object_ref (widget->window);
10316       fevent->focus_change.in = in;
10317       gdk_event_set_device (fevent, device);
10318
10319       gtk_widget_send_focus_change (widget, fevent);
10320
10321       gdk_event_free (fevent);
10322     }
10323 }
10324
10325 static void
10326 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10327 {
10328   GtkWidget *frame, *vbox, *toplevel;
10329   GdkScreen *screen;
10330
10331   if (tree_view->priv->search_custom_entry_set)
10332     return;
10333
10334   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10335   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10336
10337    if (tree_view->priv->search_window != NULL)
10338      {
10339        if (GTK_WINDOW (toplevel)->group)
10340          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10341                                       GTK_WINDOW (tree_view->priv->search_window));
10342        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
10343          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
10344                                          GTK_WINDOW (tree_view->priv->search_window));
10345        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10346        return;
10347      }
10348
10349   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10350   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10351
10352   if (GTK_WINDOW (toplevel)->group)
10353     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10354                                  GTK_WINDOW (tree_view->priv->search_window));
10355
10356   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10357                             GDK_WINDOW_TYPE_HINT_UTILITY);
10358   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10359   g_signal_connect (tree_view->priv->search_window, "delete-event",
10360                     G_CALLBACK (gtk_tree_view_search_delete_event),
10361                     tree_view);
10362   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10363                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10364                     tree_view);
10365   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10366                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10367                     tree_view);
10368   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10369                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10370                     tree_view);
10371
10372   frame = gtk_frame_new (NULL);
10373   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10374   gtk_widget_show (frame);
10375   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10376
10377   vbox = gtk_vbox_new (FALSE, 0);
10378   gtk_widget_show (vbox);
10379   gtk_container_add (GTK_CONTAINER (frame), vbox);
10380   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10381
10382   /* add entry */
10383   tree_view->priv->search_entry = gtk_entry_new ();
10384   gtk_widget_show (tree_view->priv->search_entry);
10385   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10386                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10387                     tree_view);
10388   g_signal_connect (tree_view->priv->search_entry,
10389                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10390                     tree_view);
10391   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10392                     "preedit-changed",
10393                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10394                     tree_view);
10395   gtk_container_add (GTK_CONTAINER (vbox),
10396                      tree_view->priv->search_entry);
10397
10398   gtk_widget_realize (tree_view->priv->search_entry);
10399 }
10400
10401 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10402  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10403  */
10404 static gboolean
10405 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10406                                              GdkDevice   *device,
10407                                              gboolean     keybinding)
10408 {
10409   /* We only start interactive search if we have focus or the columns
10410    * have focus.  If one of our children have focus, we don't want to
10411    * start the search.
10412    */
10413   GList *list;
10414   gboolean found_focus = FALSE;
10415   GtkWidgetClass *entry_parent_class;
10416
10417   if (!tree_view->priv->enable_search && !keybinding)
10418     return FALSE;
10419
10420   if (tree_view->priv->search_custom_entry_set)
10421     return FALSE;
10422
10423   if (tree_view->priv->search_window != NULL &&
10424       gtk_widget_get_visible (tree_view->priv->search_window))
10425     return TRUE;
10426
10427   for (list = tree_view->priv->columns; list; list = list->next)
10428     {
10429       GtkTreeViewColumn *column;
10430
10431       column = list->data;
10432       if (! column->visible)
10433         continue;
10434
10435       if (gtk_widget_has_focus (column->button))
10436         {
10437           found_focus = TRUE;
10438           break;
10439         }
10440     }
10441
10442   if (gtk_widget_has_focus (GTK_WIDGET (tree_view)))
10443     found_focus = TRUE;
10444
10445   if (!found_focus)
10446     return FALSE;
10447
10448   if (tree_view->priv->search_column < 0)
10449     return FALSE;
10450
10451   gtk_tree_view_ensure_interactive_directory (tree_view);
10452
10453   if (keybinding)
10454     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10455
10456   /* done, show it */
10457   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10458   gtk_widget_show (tree_view->priv->search_window);
10459   if (tree_view->priv->search_entry_changed_id == 0)
10460     {
10461       tree_view->priv->search_entry_changed_id =
10462         g_signal_connect (tree_view->priv->search_entry, "changed",
10463                           G_CALLBACK (gtk_tree_view_search_init),
10464                           tree_view);
10465     }
10466
10467   tree_view->priv->typeselect_flush_timeout =
10468     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10469                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10470                    tree_view);
10471
10472   /* Grab focus will select all the text.  We don't want that to happen, so we
10473    * call the parent instance and bypass the selection change.  This is probably
10474    * really non-kosher. */
10475   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10476   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10477
10478   /* send focus-in event */
10479   send_focus_change (tree_view->priv->search_entry, device, TRUE);
10480
10481   /* search first matching iter */
10482   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10483
10484   return TRUE;
10485 }
10486
10487 static gboolean
10488 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10489 {
10490   return gtk_tree_view_real_start_interactive_search (tree_view,
10491                                                       gtk_get_current_event_device (),
10492                                                       TRUE);
10493 }
10494
10495 /* this function returns the new width of the column being resized given
10496  * the column and x position of the cursor; the x cursor position is passed
10497  * in as a pointer and automagicly corrected if it's beyond min/max limits
10498  */
10499 static gint
10500 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10501                                 gint       i,
10502                                 gint      *x)
10503 {
10504   GtkTreeViewColumn *column;
10505   gint width;
10506   gboolean rtl;
10507
10508   /* first translate the x position from widget->window
10509    * to clist->clist_window
10510    */
10511   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10512   column = g_list_nth (tree_view->priv->columns, i)->data;
10513   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10514
10515   /* Clamp down the value */
10516   if (column->min_width == -1)
10517     width = MAX (column->button->requisition.width,
10518                  width);
10519   else
10520     width = MAX (column->min_width,
10521                  width);
10522   if (column->max_width != -1)
10523     width = MIN (width, column->max_width);
10524
10525   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10526
10527   return width;
10528 }
10529
10530
10531 /* FIXME this adjust_allocation is a big cut-and-paste from
10532  * GtkCList, needs to be some "official" way to do this
10533  * factored out.
10534  */
10535 typedef struct
10536 {
10537   GdkWindow *window;
10538   int dx;
10539   int dy;
10540 } ScrollData;
10541
10542 /* The window to which widget->window is relative */
10543 #define ALLOCATION_WINDOW(widget)               \
10544    (!gtk_widget_get_has_window (widget) ?               \
10545     (widget)->window :                          \
10546      gdk_window_get_parent ((widget)->window))
10547
10548 static void
10549 adjust_allocation_recurse (GtkWidget *widget,
10550                            gpointer   data)
10551 {
10552   ScrollData *scroll_data = data;
10553
10554   /* Need to really size allocate instead of just poking
10555    * into widget->allocation if the widget is not realized.
10556    * FIXME someone figure out why this was.
10557    */
10558   if (!gtk_widget_get_realized (widget))
10559     {
10560       if (gtk_widget_get_visible (widget))
10561         {
10562           GdkRectangle tmp_rectangle = widget->allocation;
10563           tmp_rectangle.x += scroll_data->dx;
10564           tmp_rectangle.y += scroll_data->dy;
10565
10566           gtk_widget_size_allocate (widget, &tmp_rectangle);
10567         }
10568     }
10569   else
10570     {
10571       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10572         {
10573           widget->allocation.x += scroll_data->dx;
10574           widget->allocation.y += scroll_data->dy;
10575
10576           if (GTK_IS_CONTAINER (widget))
10577             gtk_container_forall (GTK_CONTAINER (widget),
10578                                   adjust_allocation_recurse,
10579                                   data);
10580         }
10581     }
10582 }
10583
10584 static void
10585 adjust_allocation (GtkWidget *widget,
10586                    int        dx,
10587                    int        dy)
10588 {
10589   ScrollData scroll_data;
10590
10591   if (gtk_widget_get_realized (widget))
10592     scroll_data.window = ALLOCATION_WINDOW (widget);
10593   else
10594     scroll_data.window = NULL;
10595
10596   scroll_data.dx = dx;
10597   scroll_data.dy = dy;
10598
10599   adjust_allocation_recurse (widget, &scroll_data);
10600 }
10601
10602 /* Callbacks */
10603 static void
10604 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10605                                   GtkTreeView   *tree_view)
10606 {
10607   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10608     {
10609       gint dy;
10610
10611       gdk_window_move (tree_view->priv->bin_window,
10612                        - tree_view->priv->hadjustment->value,
10613                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10614       gdk_window_move (tree_view->priv->header_window,
10615                        - tree_view->priv->hadjustment->value,
10616                        0);
10617       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10618       if (dy)
10619         {
10620           update_prelight (tree_view,
10621                            tree_view->priv->event_last_x,
10622                            tree_view->priv->event_last_y - dy);
10623
10624           if (tree_view->priv->edited_column &&
10625               GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10626             {
10627               GList *list;
10628               GtkWidget *widget;
10629               GtkTreeViewChild *child = NULL;
10630
10631               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10632               adjust_allocation (widget, 0, dy);
10633
10634               for (list = tree_view->priv->children; list; list = list->next)
10635                 {
10636                   child = (GtkTreeViewChild *)list->data;
10637                   if (child->widget == widget)
10638                     {
10639                       child->y += dy;
10640                       break;
10641                     }
10642                 }
10643             }
10644         }
10645       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10646
10647       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10648         {
10649           /* update our dy and top_row */
10650           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10651
10652           if (!tree_view->priv->in_top_row_to_dy)
10653             gtk_tree_view_dy_to_top_row (tree_view);
10654         }
10655
10656       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
10657       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
10658     }
10659 }
10660
10661 \f
10662
10663 /* Public methods
10664  */
10665
10666 /**
10667  * gtk_tree_view_new:
10668  *
10669  * Creates a new #GtkTreeView widget.
10670  *
10671  * Return value: A newly created #GtkTreeView widget.
10672  **/
10673 GtkWidget *
10674 gtk_tree_view_new (void)
10675 {
10676   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10677 }
10678
10679 /**
10680  * gtk_tree_view_new_with_model:
10681  * @model: the model.
10682  *
10683  * Creates a new #GtkTreeView widget with the model initialized to @model.
10684  *
10685  * Return value: A newly created #GtkTreeView widget.
10686  **/
10687 GtkWidget *
10688 gtk_tree_view_new_with_model (GtkTreeModel *model)
10689 {
10690   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10691 }
10692
10693 /* Public Accessors
10694  */
10695
10696 /**
10697  * gtk_tree_view_get_model:
10698  * @tree_view: a #GtkTreeView
10699  *
10700  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10701  * model is unset.
10702  *
10703  * Return value: (transfer none): A #GtkTreeModel, or %NULL if none is currently being used.
10704  **/
10705 GtkTreeModel *
10706 gtk_tree_view_get_model (GtkTreeView *tree_view)
10707 {
10708   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10709
10710   return tree_view->priv->model;
10711 }
10712
10713 /**
10714  * gtk_tree_view_set_model:
10715  * @tree_view: A #GtkTreeNode.
10716  * @model: (allow-none): The model.
10717  *
10718  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10719  * set, it will remove it before setting the new model.  If @model is %NULL,
10720  * then it will unset the old model.
10721  **/
10722 void
10723 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10724                          GtkTreeModel *model)
10725 {
10726   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10727   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10728
10729   if (model == tree_view->priv->model)
10730     return;
10731
10732   if (tree_view->priv->scroll_to_path)
10733     {
10734       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10735       tree_view->priv->scroll_to_path = NULL;
10736     }
10737
10738   if (tree_view->priv->model)
10739     {
10740       GList *tmplist = tree_view->priv->columns;
10741
10742       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10743       gtk_tree_view_stop_editing (tree_view, TRUE);
10744
10745       remove_expand_collapse_timeout (tree_view);
10746
10747       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10748                                             gtk_tree_view_row_changed,
10749                                             tree_view);
10750       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10751                                             gtk_tree_view_row_inserted,
10752                                             tree_view);
10753       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10754                                             gtk_tree_view_row_has_child_toggled,
10755                                             tree_view);
10756       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10757                                             gtk_tree_view_row_deleted,
10758                                             tree_view);
10759       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10760                                             gtk_tree_view_rows_reordered,
10761                                             tree_view);
10762
10763       for (; tmplist; tmplist = tmplist->next)
10764         _gtk_tree_view_column_unset_model (tmplist->data,
10765                                            tree_view->priv->model);
10766
10767       if (tree_view->priv->tree)
10768         gtk_tree_view_free_rbtree (tree_view);
10769
10770       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10771       tree_view->priv->drag_dest_row = NULL;
10772       gtk_tree_row_reference_free (tree_view->priv->cursor);
10773       tree_view->priv->cursor = NULL;
10774       gtk_tree_row_reference_free (tree_view->priv->anchor);
10775       tree_view->priv->anchor = NULL;
10776       gtk_tree_row_reference_free (tree_view->priv->top_row);
10777       tree_view->priv->top_row = NULL;
10778       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10779       tree_view->priv->scroll_to_path = NULL;
10780
10781       tree_view->priv->scroll_to_column = NULL;
10782
10783       g_object_unref (tree_view->priv->model);
10784
10785       tree_view->priv->search_column = -1;
10786       tree_view->priv->fixed_height_check = 0;
10787       tree_view->priv->fixed_height = -1;
10788       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10789       tree_view->priv->last_button_x = -1;
10790       tree_view->priv->last_button_y = -1;
10791     }
10792
10793   tree_view->priv->model = model;
10794
10795   if (tree_view->priv->model)
10796     {
10797       gint i;
10798       GtkTreePath *path;
10799       GtkTreeIter iter;
10800       GtkTreeModelFlags flags;
10801
10802       if (tree_view->priv->search_column == -1)
10803         {
10804           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10805             {
10806               GType type = gtk_tree_model_get_column_type (model, i);
10807
10808               if (g_value_type_transformable (type, G_TYPE_STRING))
10809                 {
10810                   tree_view->priv->search_column = i;
10811                   break;
10812                 }
10813             }
10814         }
10815
10816       g_object_ref (tree_view->priv->model);
10817       g_signal_connect (tree_view->priv->model,
10818                         "row-changed",
10819                         G_CALLBACK (gtk_tree_view_row_changed),
10820                         tree_view);
10821       g_signal_connect (tree_view->priv->model,
10822                         "row-inserted",
10823                         G_CALLBACK (gtk_tree_view_row_inserted),
10824                         tree_view);
10825       g_signal_connect (tree_view->priv->model,
10826                         "row-has-child-toggled",
10827                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10828                         tree_view);
10829       g_signal_connect (tree_view->priv->model,
10830                         "row-deleted",
10831                         G_CALLBACK (gtk_tree_view_row_deleted),
10832                         tree_view);
10833       g_signal_connect (tree_view->priv->model,
10834                         "rows-reordered",
10835                         G_CALLBACK (gtk_tree_view_rows_reordered),
10836                         tree_view);
10837
10838       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10839       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10840         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10841       else
10842         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10843
10844       path = gtk_tree_path_new_first ();
10845       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10846         {
10847           tree_view->priv->tree = _gtk_rbtree_new ();
10848           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10849         }
10850       gtk_tree_path_free (path);
10851
10852       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10853       install_presize_handler (tree_view);
10854     }
10855
10856   g_object_notify (G_OBJECT (tree_view), "model");
10857
10858   if (tree_view->priv->selection)
10859   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10860
10861   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
10862     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10863 }
10864
10865 /**
10866  * gtk_tree_view_get_selection:
10867  * @tree_view: A #GtkTreeView.
10868  *
10869  * Gets the #GtkTreeSelection associated with @tree_view.
10870  *
10871  * Return value: (transfer none): A #GtkTreeSelection object.
10872  **/
10873 GtkTreeSelection *
10874 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10875 {
10876   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10877
10878   return tree_view->priv->selection;
10879 }
10880
10881 /**
10882  * gtk_tree_view_get_hadjustment:
10883  * @tree_view: A #GtkTreeView
10884  *
10885  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10886  *
10887  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10888  * used.
10889  **/
10890 GtkAdjustment *
10891 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10892 {
10893   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10894
10895   if (tree_view->priv->hadjustment == NULL)
10896     gtk_tree_view_set_hadjustment (tree_view, NULL);
10897
10898   return tree_view->priv->hadjustment;
10899 }
10900
10901 /**
10902  * gtk_tree_view_set_hadjustment:
10903  * @tree_view: A #GtkTreeView
10904  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10905  *
10906  * Sets the #GtkAdjustment for the current horizontal aspect.
10907  **/
10908 void
10909 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10910                                GtkAdjustment *adjustment)
10911 {
10912   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10913
10914   gtk_tree_view_set_adjustments (tree_view,
10915                                  adjustment,
10916                                  tree_view->priv->vadjustment);
10917
10918   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10919 }
10920
10921 /**
10922  * gtk_tree_view_get_vadjustment:
10923  * @tree_view: A #GtkTreeView
10924  *
10925  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10926  *
10927  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10928  * used.
10929  **/
10930 GtkAdjustment *
10931 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10932 {
10933   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10934
10935   if (tree_view->priv->vadjustment == NULL)
10936     gtk_tree_view_set_vadjustment (tree_view, NULL);
10937
10938   return tree_view->priv->vadjustment;
10939 }
10940
10941 /**
10942  * gtk_tree_view_set_vadjustment:
10943  * @tree_view: A #GtkTreeView
10944  * @adjustment: (allow-none): The #GtkAdjustment to set, or %NULL
10945  *
10946  * Sets the #GtkAdjustment for the current vertical aspect.
10947  **/
10948 void
10949 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10950                                GtkAdjustment *adjustment)
10951 {
10952   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10953
10954   gtk_tree_view_set_adjustments (tree_view,
10955                                  tree_view->priv->hadjustment,
10956                                  adjustment);
10957
10958   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10959 }
10960
10961 /* Column and header operations */
10962
10963 /**
10964  * gtk_tree_view_get_headers_visible:
10965  * @tree_view: A #GtkTreeView.
10966  *
10967  * Returns %TRUE if the headers on the @tree_view are visible.
10968  *
10969  * Return value: Whether the headers are visible or not.
10970  **/
10971 gboolean
10972 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10973 {
10974   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10975
10976   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10977 }
10978
10979 /**
10980  * gtk_tree_view_set_headers_visible:
10981  * @tree_view: A #GtkTreeView.
10982  * @headers_visible: %TRUE if the headers are visible
10983  *
10984  * Sets the visibility state of the headers.
10985  **/
10986 void
10987 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10988                                    gboolean     headers_visible)
10989 {
10990   gint x, y;
10991   GList *list;
10992   GtkTreeViewColumn *column;
10993
10994   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10995
10996   headers_visible = !! headers_visible;
10997
10998   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
10999     return;
11000
11001   if (headers_visible)
11002     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11003   else
11004     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
11005
11006   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11007     {
11008       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
11009       if (headers_visible)
11010         {
11011           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
11012
11013           if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
11014             gtk_tree_view_map_buttons (tree_view);
11015         }
11016       else
11017         {
11018           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
11019
11020           for (list = tree_view->priv->columns; list; list = list->next)
11021             {
11022               column = list->data;
11023               gtk_widget_unmap (column->button);
11024             }
11025           gdk_window_hide (tree_view->priv->header_window);
11026         }
11027     }
11028
11029   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
11030   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
11031   tree_view->priv->vadjustment->lower = 0;
11032   tree_view->priv->vadjustment->upper = tree_view->priv->height;
11033   gtk_adjustment_changed (tree_view->priv->vadjustment);
11034
11035   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11036
11037   g_object_notify (G_OBJECT (tree_view), "headers-visible");
11038 }
11039
11040 /**
11041  * gtk_tree_view_columns_autosize:
11042  * @tree_view: A #GtkTreeView.
11043  *
11044  * Resizes all columns to their optimal width. Only works after the
11045  * treeview has been realized.
11046  **/
11047 void
11048 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
11049 {
11050   gboolean dirty = FALSE;
11051   GList *list;
11052   GtkTreeViewColumn *column;
11053
11054   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11055
11056   for (list = tree_view->priv->columns; list; list = list->next)
11057     {
11058       column = list->data;
11059       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
11060         continue;
11061       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11062       dirty = TRUE;
11063     }
11064
11065   if (dirty)
11066     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11067 }
11068
11069 /**
11070  * gtk_tree_view_set_headers_clickable:
11071  * @tree_view: A #GtkTreeView.
11072  * @setting: %TRUE if the columns are clickable.
11073  *
11074  * Allow the column title buttons to be clicked.
11075  **/
11076 void
11077 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
11078                                      gboolean   setting)
11079 {
11080   GList *list;
11081
11082   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11083
11084   for (list = tree_view->priv->columns; list; list = list->next)
11085     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
11086
11087   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
11088 }
11089
11090
11091 /**
11092  * gtk_tree_view_get_headers_clickable:
11093  * @tree_view: A #GtkTreeView.
11094  *
11095  * Returns whether all header columns are clickable.
11096  *
11097  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
11098  *
11099  * Since: 2.10
11100  **/
11101 gboolean
11102 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
11103 {
11104   GList *list;
11105
11106   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11107
11108   for (list = tree_view->priv->columns; list; list = list->next)
11109     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
11110       return FALSE;
11111
11112   return TRUE;
11113 }
11114
11115 /**
11116  * gtk_tree_view_set_rules_hint
11117  * @tree_view: a #GtkTreeView
11118  * @setting: %TRUE if the tree requires reading across rows
11119  *
11120  * This function tells GTK+ that the user interface for your
11121  * application requires users to read across tree rows and associate
11122  * cells with one another. By default, GTK+ will then render the tree
11123  * with alternating row colors. Do <emphasis>not</emphasis> use it
11124  * just because you prefer the appearance of the ruled tree; that's a
11125  * question for the theme. Some themes will draw tree rows in
11126  * alternating colors even when rules are turned off, and users who
11127  * prefer that appearance all the time can choose those themes. You
11128  * should call this function only as a <emphasis>semantic</emphasis>
11129  * hint to the theme engine that your tree makes alternating colors
11130  * useful from a functional standpoint (since it has lots of columns,
11131  * generally).
11132  *
11133  **/
11134 void
11135 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
11136                               gboolean      setting)
11137 {
11138   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11139
11140   setting = setting != FALSE;
11141
11142   if (tree_view->priv->has_rules != setting)
11143     {
11144       tree_view->priv->has_rules = setting;
11145       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11146     }
11147
11148   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11149 }
11150
11151 /**
11152  * gtk_tree_view_get_rules_hint
11153  * @tree_view: a #GtkTreeView
11154  *
11155  * Gets the setting set by gtk_tree_view_set_rules_hint().
11156  *
11157  * Return value: %TRUE if rules are useful for the user of this tree
11158  **/
11159 gboolean
11160 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11161 {
11162   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11163
11164   return tree_view->priv->has_rules;
11165 }
11166
11167 /* Public Column functions
11168  */
11169
11170 /**
11171  * gtk_tree_view_append_column:
11172  * @tree_view: A #GtkTreeView.
11173  * @column: The #GtkTreeViewColumn to add.
11174  *
11175  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11176  * mode enabled, then @column must have its "sizing" property set to be
11177  * GTK_TREE_VIEW_COLUMN_FIXED.
11178  *
11179  * Return value: The number of columns in @tree_view after appending.
11180  **/
11181 gint
11182 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11183                              GtkTreeViewColumn *column)
11184 {
11185   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11186   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11187   g_return_val_if_fail (column->tree_view == NULL, -1);
11188
11189   return gtk_tree_view_insert_column (tree_view, column, -1);
11190 }
11191
11192
11193 /**
11194  * gtk_tree_view_remove_column:
11195  * @tree_view: A #GtkTreeView.
11196  * @column: The #GtkTreeViewColumn to remove.
11197  *
11198  * Removes @column from @tree_view.
11199  *
11200  * Return value: The number of columns in @tree_view after removing.
11201  **/
11202 gint
11203 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11204                              GtkTreeViewColumn *column)
11205 {
11206   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11207   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11208   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11209
11210   if (tree_view->priv->focus_column == column)
11211     tree_view->priv->focus_column = NULL;
11212
11213   if (tree_view->priv->edited_column == column)
11214     {
11215       gtk_tree_view_stop_editing (tree_view, TRUE);
11216
11217       /* no need to, but just to be sure ... */
11218       tree_view->priv->edited_column = NULL;
11219     }
11220
11221   if (tree_view->priv->expander_column == column)
11222     tree_view->priv->expander_column = NULL;
11223
11224   g_signal_handlers_disconnect_by_func (column,
11225                                         G_CALLBACK (column_sizing_notify),
11226                                         tree_view);
11227
11228   _gtk_tree_view_column_unset_tree_view (column);
11229
11230   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11231   tree_view->priv->n_columns--;
11232
11233   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11234     {
11235       GList *list;
11236
11237       _gtk_tree_view_column_unrealize_button (column);
11238       for (list = tree_view->priv->columns; list; list = list->next)
11239         {
11240           GtkTreeViewColumn *tmp_column;
11241
11242           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11243           if (tmp_column->visible)
11244             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11245         }
11246
11247       if (tree_view->priv->n_columns == 0 &&
11248           gtk_tree_view_get_headers_visible (tree_view))
11249         gdk_window_hide (tree_view->priv->header_window);
11250
11251       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11252     }
11253
11254   g_object_unref (column);
11255   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11256
11257   return tree_view->priv->n_columns;
11258 }
11259
11260 /**
11261  * gtk_tree_view_insert_column:
11262  * @tree_view: A #GtkTreeView.
11263  * @column: The #GtkTreeViewColumn to be inserted.
11264  * @position: The position to insert @column in.
11265  *
11266  * This inserts the @column into the @tree_view at @position.  If @position is
11267  * -1, then the column is inserted at the end. If @tree_view has
11268  * "fixed_height" mode enabled, then @column must have its "sizing" property
11269  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11270  *
11271  * Return value: The number of columns in @tree_view after insertion.
11272  **/
11273 gint
11274 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11275                              GtkTreeViewColumn *column,
11276                              gint               position)
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   if (tree_view->priv->fixed_height_mode)
11283     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11284                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11285
11286   g_object_ref_sink (column);
11287
11288   if (tree_view->priv->n_columns == 0 &&
11289       gtk_widget_get_realized (GTK_WIDGET (tree_view)) &&
11290       gtk_tree_view_get_headers_visible (tree_view))
11291     {
11292       gdk_window_show (tree_view->priv->header_window);
11293     }
11294
11295   g_signal_connect (column, "notify::sizing",
11296                     G_CALLBACK (column_sizing_notify), tree_view);
11297
11298   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11299                                             column, position);
11300   tree_view->priv->n_columns++;
11301
11302   _gtk_tree_view_column_set_tree_view (column, tree_view);
11303
11304   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11305     {
11306       GList *list;
11307
11308       _gtk_tree_view_column_realize_button (column);
11309
11310       for (list = tree_view->priv->columns; list; list = list->next)
11311         {
11312           column = GTK_TREE_VIEW_COLUMN (list->data);
11313           if (column->visible)
11314             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11315         }
11316       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11317     }
11318
11319   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11320
11321   return tree_view->priv->n_columns;
11322 }
11323
11324 /**
11325  * gtk_tree_view_insert_column_with_attributes:
11326  * @tree_view: A #GtkTreeView
11327  * @position: The position to insert the new column in.
11328  * @title: The title to set the header to.
11329  * @cell: The #GtkCellRenderer.
11330  * @Varargs: A %NULL-terminated list of attributes.
11331  *
11332  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11333  * @position.  If @position is -1, then the newly created column is inserted at
11334  * the end.  The column is initialized with the attributes given. If @tree_view
11335  * has "fixed_height" mode enabled, then the new column will have its sizing
11336  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11337  *
11338  * Return value: The number of columns in @tree_view after insertion.
11339  **/
11340 gint
11341 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11342                                              gint             position,
11343                                              const gchar     *title,
11344                                              GtkCellRenderer *cell,
11345                                              ...)
11346 {
11347   GtkTreeViewColumn *column;
11348   gchar *attribute;
11349   va_list args;
11350   gint column_id;
11351
11352   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11353
11354   column = gtk_tree_view_column_new ();
11355   if (tree_view->priv->fixed_height_mode)
11356     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11357
11358   gtk_tree_view_column_set_title (column, title);
11359   gtk_tree_view_column_pack_start (column, cell, TRUE);
11360
11361   va_start (args, cell);
11362
11363   attribute = va_arg (args, gchar *);
11364
11365   while (attribute != NULL)
11366     {
11367       column_id = va_arg (args, gint);
11368       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11369       attribute = va_arg (args, gchar *);
11370     }
11371
11372   va_end (args);
11373
11374   gtk_tree_view_insert_column (tree_view, column, position);
11375
11376   return tree_view->priv->n_columns;
11377 }
11378
11379 /**
11380  * gtk_tree_view_insert_column_with_data_func:
11381  * @tree_view: a #GtkTreeView
11382  * @position: Position to insert, -1 for append
11383  * @title: column title
11384  * @cell: cell renderer for column
11385  * @func: function to set attributes of cell renderer
11386  * @data: data for @func
11387  * @dnotify: destroy notifier for @data
11388  *
11389  * Convenience function that inserts a new column into the #GtkTreeView
11390  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11391  * attributes (normally using data from the model). See also
11392  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11393  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11394  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11395  *
11396  * Return value: number of columns in the tree view post-insert
11397  **/
11398 gint
11399 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11400                                              gint                       position,
11401                                              const gchar               *title,
11402                                              GtkCellRenderer           *cell,
11403                                              GtkTreeCellDataFunc        func,
11404                                              gpointer                   data,
11405                                              GDestroyNotify             dnotify)
11406 {
11407   GtkTreeViewColumn *column;
11408
11409   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11410
11411   column = gtk_tree_view_column_new ();
11412   if (tree_view->priv->fixed_height_mode)
11413     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11414
11415   gtk_tree_view_column_set_title (column, title);
11416   gtk_tree_view_column_pack_start (column, cell, TRUE);
11417   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11418
11419   gtk_tree_view_insert_column (tree_view, column, position);
11420
11421   return tree_view->priv->n_columns;
11422 }
11423
11424 /**
11425  * gtk_tree_view_get_column:
11426  * @tree_view: A #GtkTreeView.
11427  * @n: The position of the column, counting from 0.
11428  *
11429  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11430  *
11431  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11432  * range of columns.
11433  **/
11434 GtkTreeViewColumn *
11435 gtk_tree_view_get_column (GtkTreeView *tree_view,
11436                           gint         n)
11437 {
11438   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11439
11440   if (n < 0 || n >= tree_view->priv->n_columns)
11441     return NULL;
11442
11443   if (tree_view->priv->columns == NULL)
11444     return NULL;
11445
11446   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11447 }
11448
11449 /**
11450  * gtk_tree_view_get_columns:
11451  * @tree_view: A #GtkTreeView
11452  *
11453  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11454  * The returned list must be freed with g_list_free ().
11455  *
11456  * Return value: (element-type GtkTreeViewColumn) (transfer container): A list of #GtkTreeViewColumn s
11457  **/
11458 GList *
11459 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11460 {
11461   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11462
11463   return g_list_copy (tree_view->priv->columns);
11464 }
11465
11466 /**
11467  * gtk_tree_view_move_column_after:
11468  * @tree_view: A #GtkTreeView
11469  * @column: The #GtkTreeViewColumn to be moved.
11470  * @base_column: (allow-none): The #GtkTreeViewColumn to be moved relative to, or %NULL.
11471  *
11472  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11473  * @column is placed in the first position.
11474  **/
11475 void
11476 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11477                                  GtkTreeViewColumn *column,
11478                                  GtkTreeViewColumn *base_column)
11479 {
11480   GList *column_list_el, *base_el = NULL;
11481
11482   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11483
11484   column_list_el = g_list_find (tree_view->priv->columns, column);
11485   g_return_if_fail (column_list_el != NULL);
11486
11487   if (base_column)
11488     {
11489       base_el = g_list_find (tree_view->priv->columns, base_column);
11490       g_return_if_fail (base_el != NULL);
11491     }
11492
11493   if (column_list_el->prev == base_el)
11494     return;
11495
11496   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11497   if (base_el == NULL)
11498     {
11499       column_list_el->prev = NULL;
11500       column_list_el->next = tree_view->priv->columns;
11501       if (column_list_el->next)
11502         column_list_el->next->prev = column_list_el;
11503       tree_view->priv->columns = column_list_el;
11504     }
11505   else
11506     {
11507       column_list_el->prev = base_el;
11508       column_list_el->next = base_el->next;
11509       if (column_list_el->next)
11510         column_list_el->next->prev = column_list_el;
11511       base_el->next = column_list_el;
11512     }
11513
11514   if (gtk_widget_get_realized (GTK_WIDGET (tree_view)))
11515     {
11516       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11517       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11518     }
11519
11520   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11521 }
11522
11523 /**
11524  * gtk_tree_view_set_expander_column:
11525  * @tree_view: A #GtkTreeView
11526  * @column: %NULL, or the column to draw the expander arrow at.
11527  *
11528  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11529  * If @column is %NULL, then the expander arrow is always at the first
11530  * visible column.
11531  *
11532  * If you do not want expander arrow to appear in your tree, set the
11533  * expander column to a hidden column.
11534  **/
11535 void
11536 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11537                                    GtkTreeViewColumn *column)
11538 {
11539   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11540   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11541
11542   if (tree_view->priv->expander_column != column)
11543     {
11544       GList *list;
11545
11546       if (column)
11547         {
11548           /* Confirm that column is in tree_view */
11549           for (list = tree_view->priv->columns; list; list = list->next)
11550             if (list->data == column)
11551               break;
11552           g_return_if_fail (list != NULL);
11553         }
11554
11555       tree_view->priv->expander_column = column;
11556       g_object_notify (G_OBJECT (tree_view), "expander-column");
11557     }
11558 }
11559
11560 /**
11561  * gtk_tree_view_get_expander_column:
11562  * @tree_view: A #GtkTreeView
11563  *
11564  * Returns the column that is the current expander column.  This
11565  * column has the expander arrow drawn next to it.
11566  *
11567  * Return value: The expander column.
11568  **/
11569 GtkTreeViewColumn *
11570 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11571 {
11572   GList *list;
11573
11574   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11575
11576   for (list = tree_view->priv->columns; list; list = list->next)
11577     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11578       return (GtkTreeViewColumn *) list->data;
11579   return NULL;
11580 }
11581
11582
11583 /**
11584  * gtk_tree_view_set_column_drag_function:
11585  * @tree_view: A #GtkTreeView.
11586  * @func: (allow-none): A function to determine which columns are reorderable, or %NULL.
11587  * @user_data: (allow-none): User data to be passed to @func, or %NULL
11588  * @destroy: (allow-none): Destroy notifier for @user_data, or %NULL
11589  *
11590  * Sets a user function for determining where a column may be dropped when
11591  * dragged.  This function is called on every column pair in turn at the
11592  * beginning of a column drag to determine where a drop can take place.  The
11593  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11594  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11595  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11596  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11597  * @tree_view reverts to the default behavior of allowing all columns to be
11598  * dropped everywhere.
11599  **/
11600 void
11601 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11602                                         GtkTreeViewColumnDropFunc  func,
11603                                         gpointer                   user_data,
11604                                         GDestroyNotify             destroy)
11605 {
11606   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11607
11608   if (tree_view->priv->column_drop_func_data_destroy)
11609     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11610
11611   tree_view->priv->column_drop_func = func;
11612   tree_view->priv->column_drop_func_data = user_data;
11613   tree_view->priv->column_drop_func_data_destroy = destroy;
11614 }
11615
11616 /**
11617  * gtk_tree_view_scroll_to_point:
11618  * @tree_view: a #GtkTreeView
11619  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11620  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11621  *
11622  * Scrolls the tree view such that the top-left corner of the visible
11623  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11624  * in tree coordinates.  The @tree_view must be realized before
11625  * this function is called.  If it isn't, you probably want to be
11626  * using gtk_tree_view_scroll_to_cell().
11627  *
11628  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11629  **/
11630 void
11631 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11632                                gint         tree_x,
11633                                gint         tree_y)
11634 {
11635   GtkAdjustment *hadj;
11636   GtkAdjustment *vadj;
11637
11638   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11639   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
11640
11641   hadj = tree_view->priv->hadjustment;
11642   vadj = tree_view->priv->vadjustment;
11643
11644   if (tree_x != -1)
11645     gtk_adjustment_set_value (hadj, tree_x);
11646   if (tree_y != -1)
11647     gtk_adjustment_set_value (vadj, tree_y);
11648 }
11649
11650 /**
11651  * gtk_tree_view_scroll_to_cell:
11652  * @tree_view: A #GtkTreeView.
11653  * @path: (allow-none): The path of the row to move to, or %NULL.
11654  * @column: (allow-none): The #GtkTreeViewColumn to move horizontally to, or %NULL.
11655  * @use_align: whether to use alignment arguments, or %FALSE.
11656  * @row_align: The vertical alignment of the row specified by @path.
11657  * @col_align: The horizontal alignment of the column specified by @column.
11658  *
11659  * Moves the alignments of @tree_view to the position specified by @column and
11660  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11661  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11662  * or @path need to be non-%NULL.  @row_align determines where the row is
11663  * placed, and @col_align determines where @column is placed.  Both are expected
11664  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11665  * right/bottom alignment, 0.5 means center.
11666  *
11667  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11668  * tree does the minimum amount of work to scroll the cell onto the screen.
11669  * This means that the cell will be scrolled to the edge closest to its current
11670  * position.  If the cell is currently visible on the screen, nothing is done.
11671  *
11672  * This function only works if the model is set, and @path is a valid row on the
11673  * model.  If the model changes before the @tree_view is realized, the centered
11674  * path will be modified to reflect this change.
11675  **/
11676 void
11677 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11678                               GtkTreePath       *path,
11679                               GtkTreeViewColumn *column,
11680                               gboolean           use_align,
11681                               gfloat             row_align,
11682                               gfloat             col_align)
11683 {
11684   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11685   g_return_if_fail (tree_view->priv->model != NULL);
11686   g_return_if_fail (tree_view->priv->tree != NULL);
11687   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11688   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11689   g_return_if_fail (path != NULL || column != NULL);
11690
11691 #if 0
11692   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11693            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11694 #endif
11695   row_align = CLAMP (row_align, 0.0, 1.0);
11696   col_align = CLAMP (col_align, 0.0, 1.0);
11697
11698
11699   /* Note: Despite the benefits that come from having one code path for the
11700    * scrolling code, we short-circuit validate_visible_area's immplementation as
11701    * it is much slower than just going to the point.
11702    */
11703   if (!gtk_widget_get_visible (GTK_WIDGET (tree_view)) ||
11704       !gtk_widget_get_realized (GTK_WIDGET (tree_view)) ||
11705       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11706       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11707     {
11708       if (tree_view->priv->scroll_to_path)
11709         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11710
11711       tree_view->priv->scroll_to_path = NULL;
11712       tree_view->priv->scroll_to_column = NULL;
11713
11714       if (path)
11715         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11716       if (column)
11717         tree_view->priv->scroll_to_column = column;
11718       tree_view->priv->scroll_to_use_align = use_align;
11719       tree_view->priv->scroll_to_row_align = row_align;
11720       tree_view->priv->scroll_to_col_align = col_align;
11721
11722       install_presize_handler (tree_view);
11723     }
11724   else
11725     {
11726       GdkRectangle cell_rect;
11727       GdkRectangle vis_rect;
11728       gint dest_x, dest_y;
11729
11730       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11731       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11732
11733       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11734
11735       dest_x = vis_rect.x;
11736       dest_y = vis_rect.y;
11737
11738       if (column)
11739         {
11740           if (use_align)
11741             {
11742               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11743             }
11744           else
11745             {
11746               if (cell_rect.x < vis_rect.x)
11747                 dest_x = cell_rect.x;
11748               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11749                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11750             }
11751         }
11752
11753       if (path)
11754         {
11755           if (use_align)
11756             {
11757               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11758               dest_y = MAX (dest_y, 0);
11759             }
11760           else
11761             {
11762               if (cell_rect.y < vis_rect.y)
11763                 dest_y = cell_rect.y;
11764               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11765                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11766             }
11767         }
11768
11769       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11770     }
11771 }
11772
11773 /**
11774  * gtk_tree_view_row_activated:
11775  * @tree_view: A #GtkTreeView
11776  * @path: The #GtkTreePath to be activated.
11777  * @column: The #GtkTreeViewColumn to be activated.
11778  *
11779  * Activates the cell determined by @path and @column.
11780  **/
11781 void
11782 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11783                              GtkTreePath       *path,
11784                              GtkTreeViewColumn *column)
11785 {
11786   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11787
11788   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11789 }
11790
11791
11792 static void
11793 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11794                                           GtkRBNode *node,
11795                                           gpointer   data)
11796 {
11797   GtkTreeView *tree_view = data;
11798
11799   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11800       node->children)
11801     {
11802       GtkTreePath *path;
11803       GtkTreeIter iter;
11804
11805       path = _gtk_tree_view_find_path (tree_view, tree, node);
11806       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11807
11808       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11809
11810       gtk_tree_path_free (path);
11811     }
11812
11813   if (node->children)
11814     _gtk_rbtree_traverse (node->children,
11815                           node->children->root,
11816                           G_PRE_ORDER,
11817                           gtk_tree_view_expand_all_emission_helper,
11818                           tree_view);
11819 }
11820
11821 /**
11822  * gtk_tree_view_expand_all:
11823  * @tree_view: A #GtkTreeView.
11824  *
11825  * Recursively expands all nodes in the @tree_view.
11826  **/
11827 void
11828 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11829 {
11830   GtkTreePath *path;
11831   GtkRBTree *tree;
11832   GtkRBNode *node;
11833
11834   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11835
11836   if (tree_view->priv->tree == NULL)
11837     return;
11838
11839   path = gtk_tree_path_new_first ();
11840   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11841
11842   while (node)
11843     {
11844       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11845       node = _gtk_rbtree_next (tree, node);
11846       gtk_tree_path_next (path);
11847   }
11848
11849   gtk_tree_path_free (path);
11850 }
11851
11852 /* Timeout to animate the expander during expands and collapses */
11853 static gboolean
11854 expand_collapse_timeout (gpointer data)
11855 {
11856   return do_expand_collapse (data);
11857 }
11858
11859 static void
11860 add_expand_collapse_timeout (GtkTreeView *tree_view,
11861                              GtkRBTree   *tree,
11862                              GtkRBNode   *node,
11863                              gboolean     expand)
11864 {
11865   if (tree_view->priv->expand_collapse_timeout != 0)
11866     return;
11867
11868   tree_view->priv->expand_collapse_timeout =
11869       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11870   tree_view->priv->expanded_collapsed_tree = tree;
11871   tree_view->priv->expanded_collapsed_node = node;
11872
11873   if (expand)
11874     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11875   else
11876     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11877 }
11878
11879 static void
11880 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11881 {
11882   if (tree_view->priv->expand_collapse_timeout)
11883     {
11884       g_source_remove (tree_view->priv->expand_collapse_timeout);
11885       tree_view->priv->expand_collapse_timeout = 0;
11886     }
11887
11888   if (tree_view->priv->expanded_collapsed_node != NULL)
11889     {
11890       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11891       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11892
11893       tree_view->priv->expanded_collapsed_node = NULL;
11894     }
11895 }
11896
11897 static void
11898 cancel_arrow_animation (GtkTreeView *tree_view)
11899 {
11900   if (tree_view->priv->expand_collapse_timeout)
11901     {
11902       while (do_expand_collapse (tree_view));
11903
11904       remove_expand_collapse_timeout (tree_view);
11905     }
11906 }
11907
11908 static gboolean
11909 do_expand_collapse (GtkTreeView *tree_view)
11910 {
11911   GtkRBNode *node;
11912   GtkRBTree *tree;
11913   gboolean expanding;
11914   gboolean redraw;
11915
11916   redraw = FALSE;
11917   expanding = TRUE;
11918
11919   node = tree_view->priv->expanded_collapsed_node;
11920   tree = tree_view->priv->expanded_collapsed_tree;
11921
11922   if (node->children == NULL)
11923     expanding = FALSE;
11924
11925   if (expanding)
11926     {
11927       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11928         {
11929           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11930           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11931
11932           redraw = TRUE;
11933
11934         }
11935       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11936         {
11937           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11938
11939           redraw = TRUE;
11940         }
11941     }
11942   else
11943     {
11944       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11945         {
11946           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11947           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11948
11949           redraw = TRUE;
11950         }
11951       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11952         {
11953           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11954
11955           redraw = TRUE;
11956
11957         }
11958     }
11959
11960   if (redraw)
11961     {
11962       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11963
11964       return TRUE;
11965     }
11966
11967   return FALSE;
11968 }
11969
11970 /**
11971  * gtk_tree_view_collapse_all:
11972  * @tree_view: A #GtkTreeView.
11973  *
11974  * Recursively collapses all visible, expanded nodes in @tree_view.
11975  **/
11976 void
11977 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11978 {
11979   GtkRBTree *tree;
11980   GtkRBNode *node;
11981   GtkTreePath *path;
11982   gint *indices;
11983
11984   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11985
11986   if (tree_view->priv->tree == NULL)
11987     return;
11988
11989   path = gtk_tree_path_new ();
11990   gtk_tree_path_down (path);
11991   indices = gtk_tree_path_get_indices (path);
11992
11993   tree = tree_view->priv->tree;
11994   node = tree->root;
11995   while (node && node->left != tree->nil)
11996     node = node->left;
11997
11998   while (node)
11999     {
12000       if (node->children)
12001         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12002       indices[0]++;
12003       node = _gtk_rbtree_next (tree, node);
12004     }
12005
12006   gtk_tree_path_free (path);
12007 }
12008
12009 /**
12010  * gtk_tree_view_expand_to_path:
12011  * @tree_view: A #GtkTreeView.
12012  * @path: path to a row.
12013  *
12014  * Expands the row at @path. This will also expand all parent rows of
12015  * @path as necessary.
12016  *
12017  * Since: 2.2
12018  **/
12019 void
12020 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
12021                               GtkTreePath *path)
12022 {
12023   gint i, depth;
12024   gint *indices;
12025   GtkTreePath *tmp;
12026
12027   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12028   g_return_if_fail (path != NULL);
12029
12030   depth = gtk_tree_path_get_depth (path);
12031   indices = gtk_tree_path_get_indices (path);
12032
12033   tmp = gtk_tree_path_new ();
12034   g_return_if_fail (tmp != NULL);
12035
12036   for (i = 0; i < depth; i++)
12037     {
12038       gtk_tree_path_append_index (tmp, indices[i]);
12039       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
12040     }
12041
12042   gtk_tree_path_free (tmp);
12043 }
12044
12045 /* FIXME the bool return values for expand_row and collapse_row are
12046  * not analagous; they should be TRUE if the row had children and
12047  * was not already in the requested state.
12048  */
12049
12050
12051 static gboolean
12052 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
12053                                GtkTreePath *path,
12054                                GtkRBTree   *tree,
12055                                GtkRBNode   *node,
12056                                gboolean     open_all,
12057                                gboolean     animate)
12058 {
12059   GtkTreeIter iter;
12060   GtkTreeIter temp;
12061   gboolean expand;
12062
12063   if (animate)
12064     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12065                   "gtk-enable-animations", &animate,
12066                   NULL);
12067
12068   remove_auto_expand_timeout (tree_view);
12069
12070   if (node->children && !open_all)
12071     return FALSE;
12072
12073   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
12074     return FALSE;
12075
12076   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12077   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12078     return FALSE;
12079
12080
12081    if (node->children && open_all)
12082     {
12083       gboolean retval = FALSE;
12084       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
12085
12086       gtk_tree_path_append_index (tmp_path, 0);
12087       tree = node->children;
12088       node = tree->root;
12089       while (node->left != tree->nil)
12090         node = node->left;
12091       /* try to expand the children */
12092       do
12093         {
12094          gboolean t;
12095          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
12096                                             TRUE, animate);
12097          if (t)
12098            retval = TRUE;
12099
12100          gtk_tree_path_next (tmp_path);
12101          node = _gtk_rbtree_next (tree, node);
12102        }
12103       while (node != NULL);
12104
12105       gtk_tree_path_free (tmp_path);
12106
12107       return retval;
12108     }
12109
12110   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
12111
12112   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
12113     return FALSE;
12114
12115   if (expand)
12116     return FALSE;
12117
12118   node->children = _gtk_rbtree_new ();
12119   node->children->parent_tree = tree;
12120   node->children->parent_node = node;
12121
12122   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
12123
12124   gtk_tree_view_build_tree (tree_view,
12125                             node->children,
12126                             &temp,
12127                             gtk_tree_path_get_depth (path) + 1,
12128                             open_all);
12129
12130   remove_expand_collapse_timeout (tree_view);
12131
12132   if (animate)
12133     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
12134
12135   install_presize_handler (tree_view);
12136
12137   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
12138   if (open_all && node->children)
12139     {
12140       _gtk_rbtree_traverse (node->children,
12141                             node->children->root,
12142                             G_PRE_ORDER,
12143                             gtk_tree_view_expand_all_emission_helper,
12144                             tree_view);
12145     }
12146   return TRUE;
12147 }
12148
12149
12150 /**
12151  * gtk_tree_view_expand_row:
12152  * @tree_view: a #GtkTreeView
12153  * @path: path to a row
12154  * @open_all: whether to recursively expand, or just expand immediate children
12155  *
12156  * Opens the row so its children are visible.
12157  *
12158  * Return value: %TRUE if the row existed and had children
12159  **/
12160 gboolean
12161 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12162                           GtkTreePath *path,
12163                           gboolean     open_all)
12164 {
12165   GtkRBTree *tree;
12166   GtkRBNode *node;
12167
12168   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12169   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12170   g_return_val_if_fail (path != NULL, FALSE);
12171
12172   if (_gtk_tree_view_find_node (tree_view,
12173                                 path,
12174                                 &tree,
12175                                 &node))
12176     return FALSE;
12177
12178   if (tree != NULL)
12179     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12180   else
12181     return FALSE;
12182 }
12183
12184 static gboolean
12185 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12186                                  GtkTreePath *path,
12187                                  GtkRBTree   *tree,
12188                                  GtkRBNode   *node,
12189                                  gboolean     animate)
12190 {
12191   GtkTreeIter iter;
12192   GtkTreeIter children;
12193   gboolean collapse;
12194   gint x, y;
12195   GList *list;
12196   GdkWindow *child, *parent;
12197
12198   if (animate)
12199     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12200                   "gtk-enable-animations", &animate,
12201                   NULL);
12202
12203   remove_auto_expand_timeout (tree_view);
12204
12205   if (node->children == NULL)
12206     return FALSE;
12207
12208   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12209
12210   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12211
12212   if (collapse)
12213     return FALSE;
12214
12215   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12216    * a chance to prelight the correct node below */
12217
12218   if (tree_view->priv->prelight_tree)
12219     {
12220       GtkRBTree *parent_tree;
12221       GtkRBNode *parent_node;
12222
12223       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12224       parent_node = tree_view->priv->prelight_tree->parent_node;
12225       while (parent_tree)
12226         {
12227           if (parent_tree == tree && parent_node == node)
12228             {
12229               ensure_unprelighted (tree_view);
12230               break;
12231             }
12232           parent_node = parent_tree->parent_node;
12233           parent_tree = parent_tree->parent_tree;
12234         }
12235     }
12236
12237   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12238
12239   for (list = tree_view->priv->columns; list; list = list->next)
12240     {
12241       GtkTreeViewColumn *column = list->data;
12242
12243       if (column->visible == FALSE)
12244         continue;
12245       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12246         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12247     }
12248
12249   if (tree_view->priv->destroy_count_func)
12250     {
12251       GtkTreePath *child_path;
12252       gint child_count = 0;
12253       child_path = gtk_tree_path_copy (path);
12254       gtk_tree_path_down (child_path);
12255       if (node->children)
12256         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12257       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12258       gtk_tree_path_free (child_path);
12259     }
12260
12261   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12262     {
12263       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12264
12265       if (gtk_tree_path_is_ancestor (path, cursor_path))
12266         {
12267           gtk_tree_row_reference_free (tree_view->priv->cursor);
12268           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12269                                                                       tree_view->priv->model,
12270                                                                       path);
12271         }
12272       gtk_tree_path_free (cursor_path);
12273     }
12274
12275   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12276     {
12277       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12278       if (gtk_tree_path_is_ancestor (path, anchor_path))
12279         {
12280           gtk_tree_row_reference_free (tree_view->priv->anchor);
12281           tree_view->priv->anchor = NULL;
12282         }
12283       gtk_tree_path_free (anchor_path);
12284     }
12285
12286   /* Stop a pending double click */
12287   tree_view->priv->last_button_x = -1;
12288   tree_view->priv->last_button_y = -1;
12289
12290   remove_expand_collapse_timeout (tree_view);
12291
12292   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12293     {
12294       _gtk_rbtree_remove (node->children);
12295       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12296     }
12297   else
12298     _gtk_rbtree_remove (node->children);
12299
12300   if (animate)
12301     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12302
12303   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12304     {
12305       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12306     }
12307
12308   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12309
12310   if (gtk_widget_get_mapped (GTK_WIDGET (tree_view)))
12311     {
12312       /* now that we've collapsed all rows, we want to try to set the prelight
12313        * again. To do this, we fake a motion event and send it to ourselves. */
12314
12315       child = tree_view->priv->bin_window;
12316       parent = gdk_window_get_parent (child);
12317
12318       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12319         {
12320           GdkEventMotion event;
12321           gint child_x, child_y;
12322
12323           gdk_window_get_position (child, &child_x, &child_y);
12324
12325           event.window = tree_view->priv->bin_window;
12326           event.x = x - child_x;
12327           event.y = y - child_y;
12328
12329           /* despite the fact this isn't a real event, I'm almost positive it will
12330            * never trigger a drag event.  maybe_drag is the only function that uses
12331            * more than just event.x and event.y. */
12332           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12333         }
12334     }
12335
12336   return TRUE;
12337 }
12338
12339 /**
12340  * gtk_tree_view_collapse_row:
12341  * @tree_view: a #GtkTreeView
12342  * @path: path to a row in the @tree_view
12343  *
12344  * Collapses a row (hides its child rows, if they exist).
12345  *
12346  * Return value: %TRUE if the row was collapsed.
12347  **/
12348 gboolean
12349 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12350                             GtkTreePath *path)
12351 {
12352   GtkRBTree *tree;
12353   GtkRBNode *node;
12354
12355   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12356   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12357   g_return_val_if_fail (path != NULL, FALSE);
12358
12359   if (_gtk_tree_view_find_node (tree_view,
12360                                 path,
12361                                 &tree,
12362                                 &node))
12363     return FALSE;
12364
12365   if (tree == NULL || node->children == NULL)
12366     return FALSE;
12367
12368   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12369 }
12370
12371 static void
12372 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12373                                         GtkRBTree              *tree,
12374                                         GtkTreePath            *path,
12375                                         GtkTreeViewMappingFunc  func,
12376                                         gpointer                user_data)
12377 {
12378   GtkRBNode *node;
12379
12380   if (tree == NULL || tree->root == NULL)
12381     return;
12382
12383   node = tree->root;
12384
12385   while (node && node->left != tree->nil)
12386     node = node->left;
12387
12388   while (node)
12389     {
12390       if (node->children)
12391         {
12392           (* func) (tree_view, path, user_data);
12393           gtk_tree_path_down (path);
12394           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12395           gtk_tree_path_up (path);
12396         }
12397       gtk_tree_path_next (path);
12398       node = _gtk_rbtree_next (tree, node);
12399     }
12400 }
12401
12402 /**
12403  * gtk_tree_view_map_expanded_rows:
12404  * @tree_view: A #GtkTreeView
12405  * @func: A function to be called
12406  * @data: User data to be passed to the function.
12407  *
12408  * Calls @func on all expanded rows.
12409  **/
12410 void
12411 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12412                                  GtkTreeViewMappingFunc  func,
12413                                  gpointer                user_data)
12414 {
12415   GtkTreePath *path;
12416
12417   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12418   g_return_if_fail (func != NULL);
12419
12420   path = gtk_tree_path_new_first ();
12421
12422   gtk_tree_view_map_expanded_rows_helper (tree_view,
12423                                           tree_view->priv->tree,
12424                                           path, func, user_data);
12425
12426   gtk_tree_path_free (path);
12427 }
12428
12429 /**
12430  * gtk_tree_view_row_expanded:
12431  * @tree_view: A #GtkTreeView.
12432  * @path: A #GtkTreePath to test expansion state.
12433  *
12434  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12435  *
12436  * Return value: %TRUE if #path is expanded.
12437  **/
12438 gboolean
12439 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12440                             GtkTreePath *path)
12441 {
12442   GtkRBTree *tree;
12443   GtkRBNode *node;
12444
12445   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12446   g_return_val_if_fail (path != NULL, FALSE);
12447
12448   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12449
12450   if (node == NULL)
12451     return FALSE;
12452
12453   return (node->children != NULL);
12454 }
12455
12456 /**
12457  * gtk_tree_view_get_reorderable:
12458  * @tree_view: a #GtkTreeView
12459  *
12460  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12461  * gtk_tree_view_set_reorderable().
12462  *
12463  * Return value: %TRUE if the tree can be reordered.
12464  **/
12465 gboolean
12466 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12467 {
12468   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12469
12470   return tree_view->priv->reorderable;
12471 }
12472
12473 /**
12474  * gtk_tree_view_set_reorderable:
12475  * @tree_view: A #GtkTreeView.
12476  * @reorderable: %TRUE, if the tree can be reordered.
12477  *
12478  * This function is a convenience function to allow you to reorder
12479  * models that support the #GtkDragSourceIface and the
12480  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12481  * these.  If @reorderable is %TRUE, then the user can reorder the
12482  * model by dragging and dropping rows. The developer can listen to
12483  * these changes by connecting to the model's row_inserted and
12484  * row_deleted signals. The reordering is implemented by setting up
12485  * the tree view as a drag source and destination. Therefore, drag and
12486  * drop can not be used in a reorderable view for any other purpose.
12487  *
12488  * This function does not give you any degree of control over the order -- any
12489  * reordering is allowed.  If more control is needed, you should probably
12490  * handle drag and drop manually.
12491  **/
12492 void
12493 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12494                                gboolean     reorderable)
12495 {
12496   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12497
12498   reorderable = reorderable != FALSE;
12499
12500   if (tree_view->priv->reorderable == reorderable)
12501     return;
12502
12503   if (reorderable)
12504     {
12505       const GtkTargetEntry row_targets[] = {
12506         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12507       };
12508
12509       gtk_tree_view_enable_model_drag_source (tree_view,
12510                                               GDK_BUTTON1_MASK,
12511                                               row_targets,
12512                                               G_N_ELEMENTS (row_targets),
12513                                               GDK_ACTION_MOVE);
12514       gtk_tree_view_enable_model_drag_dest (tree_view,
12515                                             row_targets,
12516                                             G_N_ELEMENTS (row_targets),
12517                                             GDK_ACTION_MOVE);
12518     }
12519   else
12520     {
12521       gtk_tree_view_unset_rows_drag_source (tree_view);
12522       gtk_tree_view_unset_rows_drag_dest (tree_view);
12523     }
12524
12525   tree_view->priv->reorderable = reorderable;
12526
12527   g_object_notify (G_OBJECT (tree_view), "reorderable");
12528 }
12529
12530 static void
12531 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12532                                GtkTreePath     *path,
12533                                gboolean         clear_and_select,
12534                                gboolean         clamp_node)
12535 {
12536   GtkRBTree *tree = NULL;
12537   GtkRBNode *node = NULL;
12538
12539   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12540     {
12541       GtkTreePath *cursor_path;
12542       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12543       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12544       gtk_tree_path_free (cursor_path);
12545     }
12546
12547   gtk_tree_row_reference_free (tree_view->priv->cursor);
12548   tree_view->priv->cursor = NULL;
12549
12550   /* One cannot set the cursor on a separator.   Also, if
12551    * _gtk_tree_view_find_node returns TRUE, it ran out of tree
12552    * before finding the tree and node belonging to path.  The
12553    * path maps to a non-existing path and we will silently bail out.
12554    * We unset tree and node to avoid further processing.
12555    */
12556   if (!row_is_separator (tree_view, NULL, path)
12557       && _gtk_tree_view_find_node (tree_view, path, &tree, &node) == FALSE)
12558     {
12559       tree_view->priv->cursor =
12560           gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12561                                             tree_view->priv->model,
12562                                             path);
12563     }
12564   else
12565     {
12566       tree = NULL;
12567       node = NULL;
12568     }
12569
12570   if (tree != NULL)
12571     {
12572       GtkRBTree *new_tree = NULL;
12573       GtkRBNode *new_node = NULL;
12574
12575       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12576         {
12577           GtkTreeSelectMode mode = 0;
12578
12579           if (tree_view->priv->ctrl_pressed)
12580             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12581           if (tree_view->priv->shift_pressed)
12582             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12583
12584           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12585                                                     node, tree, path, mode,
12586                                                     FALSE);
12587         }
12588
12589       /* We have to re-find tree and node here again, somebody might have
12590        * cleared the node or the whole tree in the GtkTreeSelection::changed
12591        * callback. If the nodes differ we bail out here.
12592        */
12593       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12594
12595       if (tree != new_tree || node != new_node)
12596         return;
12597
12598       if (clamp_node)
12599         {
12600           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12601           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12602         }
12603     }
12604
12605   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12606 }
12607
12608 /**
12609  * gtk_tree_view_get_cursor:
12610  * @tree_view: A #GtkTreeView
12611  * @path: (out) (allow-none): A pointer to be filled with the current cursor path, or %NULL
12612  * @focus_column: (out) (allow-none): A pointer to be filled with the current focus column, or %NULL
12613  *
12614  * Fills in @path and @focus_column with the current path and focus column.  If
12615  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12616  * currently has focus, then *@focus_column will be %NULL.
12617  *
12618  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12619  * you are done with it.
12620  **/
12621 void
12622 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12623                           GtkTreePath       **path,
12624                           GtkTreeViewColumn **focus_column)
12625 {
12626   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12627
12628   if (path)
12629     {
12630       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12631         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12632       else
12633         *path = NULL;
12634     }
12635
12636   if (focus_column)
12637     {
12638       *focus_column = tree_view->priv->focus_column;
12639     }
12640 }
12641
12642 /**
12643  * gtk_tree_view_set_cursor:
12644  * @tree_view: A #GtkTreeView
12645  * @path: A #GtkTreePath
12646  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12647  * @start_editing: %TRUE if the specified cell should start being edited.
12648  *
12649  * Sets the current keyboard focus to be at @path, and selects it.  This is
12650  * useful when you want to focus the user's attention on a particular row.  If
12651  * @focus_column is not %NULL, then focus is given to the column specified by
12652  * it. Additionally, if @focus_column is specified, and @start_editing is
12653  * %TRUE, then editing should be started in the specified cell.
12654  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12655  * in order to give keyboard focus to the widget.  Please note that editing
12656  * can only happen when the widget is realized.
12657  *
12658  * If @path is invalid for @model, the current cursor (if any) will be unset
12659  * and the function will return without failing.
12660  **/
12661 void
12662 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12663                           GtkTreePath       *path,
12664                           GtkTreeViewColumn *focus_column,
12665                           gboolean           start_editing)
12666 {
12667   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12668                                     NULL, start_editing);
12669 }
12670
12671 /**
12672  * gtk_tree_view_set_cursor_on_cell:
12673  * @tree_view: A #GtkTreeView
12674  * @path: A #GtkTreePath
12675  * @focus_column: (allow-none): A #GtkTreeViewColumn, or %NULL
12676  * @focus_cell: (allow-none): A #GtkCellRenderer, or %NULL
12677  * @start_editing: %TRUE if the specified cell should start being edited.
12678  *
12679  * Sets the current keyboard focus to be at @path, and selects it.  This is
12680  * useful when you want to focus the user's attention on a particular row.  If
12681  * @focus_column is not %NULL, then focus is given to the column specified by
12682  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12683  * contains 2 or more editable or activatable cells, then focus is given to
12684  * the cell specified by @focus_cell. Additionally, if @focus_column is
12685  * specified, and @start_editing is %TRUE, then editing should be started in
12686  * the specified cell.  This function is often followed by
12687  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12688  * widget.  Please note that editing can only happen when the widget is
12689  * realized.
12690  *
12691  * If @path is invalid for @model, the current cursor (if any) will be unset
12692  * and the function will return without failing.
12693  *
12694  * Since: 2.2
12695  **/
12696 void
12697 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12698                                   GtkTreePath       *path,
12699                                   GtkTreeViewColumn *focus_column,
12700                                   GtkCellRenderer   *focus_cell,
12701                                   gboolean           start_editing)
12702 {
12703   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12704   g_return_if_fail (path != NULL);
12705   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12706
12707   if (!tree_view->priv->model)
12708     return;
12709
12710   if (focus_cell)
12711     {
12712       g_return_if_fail (focus_column);
12713       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12714     }
12715
12716   /* cancel the current editing, if it exists */
12717   if (tree_view->priv->edited_column &&
12718       tree_view->priv->edited_column->editable_widget)
12719     gtk_tree_view_stop_editing (tree_view, TRUE);
12720
12721   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12722
12723   if (focus_column && focus_column->visible)
12724     {
12725       GList *list;
12726       gboolean column_in_tree = FALSE;
12727
12728       for (list = tree_view->priv->columns; list; list = list->next)
12729         if (list->data == focus_column)
12730           {
12731             column_in_tree = TRUE;
12732             break;
12733           }
12734       g_return_if_fail (column_in_tree);
12735       tree_view->priv->focus_column = focus_column;
12736       if (focus_cell)
12737         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12738       if (start_editing)
12739         gtk_tree_view_start_editing (tree_view, path);
12740     }
12741 }
12742
12743 /**
12744  * gtk_tree_view_get_bin_window:
12745  * @tree_view: A #GtkTreeView
12746  *
12747  * Returns the window that @tree_view renders to.  This is used primarily to
12748  * compare to <literal>event->window</literal> to confirm that the event on
12749  * @tree_view is on the right window.
12750  *
12751  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12752  **/
12753 GdkWindow *
12754 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12755 {
12756   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12757
12758   return tree_view->priv->bin_window;
12759 }
12760
12761 /**
12762  * gtk_tree_view_get_path_at_pos:
12763  * @tree_view: A #GtkTreeView.
12764  * @x: The x position to be identified (relative to bin_window).
12765  * @y: The y position to be identified (relative to bin_window).
12766  * @path: (out) (allow-none): A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12767  * @column: (out) (allow-none): A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12768  * @cell_x: (out) (allow-none): A pointer where the X coordinate relative to the cell can be placed, or %NULL
12769  * @cell_y: (out) (allow-none): A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12770  *
12771  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12772  * (please see gtk_tree_view_get_bin_window()).
12773  * That is, @x and @y are relative to an events coordinates. @x and @y must
12774  * come from an event on the @tree_view only where <literal>event->window ==
12775  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12776  * things like popup menus. If @path is non-%NULL, then it will be filled
12777  * with the #GtkTreePath at that point.  This path should be freed with
12778  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12779  * with the column at that point.  @cell_x and @cell_y return the coordinates
12780  * relative to the cell background (i.e. the @background_area passed to
12781  * gtk_cell_renderer_render()).  This function is only meaningful if
12782  * @tree_view is realized.  Therefore this function will always return %FALSE
12783  * if @tree_view is not realized or does not have a model.
12784  *
12785  * For converting widget coordinates (eg. the ones you get from
12786  * GtkWidget::query-tooltip), please see
12787  * gtk_tree_view_convert_widget_to_bin_window_coords().
12788  *
12789  * Return value: %TRUE if a row exists at that coordinate.
12790  **/
12791 gboolean
12792 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12793                                gint                x,
12794                                gint                y,
12795                                GtkTreePath       **path,
12796                                GtkTreeViewColumn **column,
12797                                gint               *cell_x,
12798                                gint               *cell_y)
12799 {
12800   GtkRBTree *tree;
12801   GtkRBNode *node;
12802   gint y_offset;
12803
12804   g_return_val_if_fail (tree_view != NULL, FALSE);
12805
12806   if (path)
12807     *path = NULL;
12808   if (column)
12809     *column = NULL;
12810
12811   if (tree_view->priv->bin_window == NULL)
12812     return FALSE;
12813
12814   if (tree_view->priv->tree == NULL)
12815     return FALSE;
12816
12817   if (x > tree_view->priv->hadjustment->upper)
12818     return FALSE;
12819
12820   if (x < 0 || y < 0)
12821     return FALSE;
12822
12823   if (column || cell_x)
12824     {
12825       GtkTreeViewColumn *tmp_column;
12826       GtkTreeViewColumn *last_column = NULL;
12827       GList *list;
12828       gint remaining_x = x;
12829       gboolean found = FALSE;
12830       gboolean rtl;
12831
12832       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12833       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12834            list;
12835            list = (rtl ? list->prev : list->next))
12836         {
12837           tmp_column = list->data;
12838
12839           if (tmp_column->visible == FALSE)
12840             continue;
12841
12842           last_column = tmp_column;
12843           if (remaining_x <= tmp_column->width)
12844             {
12845               found = TRUE;
12846
12847               if (column)
12848                 *column = tmp_column;
12849
12850               if (cell_x)
12851                 *cell_x = remaining_x;
12852
12853               break;
12854             }
12855           remaining_x -= tmp_column->width;
12856         }
12857
12858       /* If found is FALSE and there is a last_column, then it the remainder
12859        * space is in that area
12860        */
12861       if (!found)
12862         {
12863           if (last_column)
12864             {
12865               if (column)
12866                 *column = last_column;
12867
12868               if (cell_x)
12869                 *cell_x = last_column->width + remaining_x;
12870             }
12871           else
12872             {
12873               return FALSE;
12874             }
12875         }
12876     }
12877
12878   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12879                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12880                                       &tree, &node);
12881
12882   if (tree == NULL)
12883     return FALSE;
12884
12885   if (cell_y)
12886     *cell_y = y_offset;
12887
12888   if (path)
12889     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12890
12891   return TRUE;
12892 }
12893
12894
12895 /**
12896  * gtk_tree_view_get_cell_area:
12897  * @tree_view: a #GtkTreeView
12898  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12899  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12900  * @rect: rectangle to fill with cell rect
12901  *
12902  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12903  * row specified by @path and the column specified by @column.  If @path is
12904  * %NULL, or points to a path not currently displayed, the @y and @height fields
12905  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12906  * fields will be filled with 0.  The sum of all cell rects does not cover the
12907  * entire tree; there are extra pixels in between rows, for example. The
12908  * returned rectangle is equivalent to the @cell_area passed to
12909  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12910  * realized.
12911  **/
12912 void
12913 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12914                              GtkTreePath        *path,
12915                              GtkTreeViewColumn  *column,
12916                              GdkRectangle       *rect)
12917 {
12918   GtkRBTree *tree = NULL;
12919   GtkRBNode *node = NULL;
12920   gint vertical_separator;
12921   gint horizontal_separator;
12922
12923   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12924   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12925   g_return_if_fail (rect != NULL);
12926   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12927   g_return_if_fail (gtk_widget_get_realized (GTK_WIDGET (tree_view)));
12928
12929   gtk_widget_style_get (GTK_WIDGET (tree_view),
12930                         "vertical-separator", &vertical_separator,
12931                         "horizontal-separator", &horizontal_separator,
12932                         NULL);
12933
12934   rect->x = 0;
12935   rect->y = 0;
12936   rect->width = 0;
12937   rect->height = 0;
12938
12939   if (column)
12940     {
12941       rect->x = column->button->allocation.x + horizontal_separator/2;
12942       rect->width = column->button->allocation.width - horizontal_separator;
12943     }
12944
12945   if (path)
12946     {
12947       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12948
12949       /* Get vertical coords */
12950       if ((!ret && tree == NULL) || ret)
12951         return;
12952
12953       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12954       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12955
12956       if (column &&
12957           gtk_tree_view_is_expander_column (tree_view, column))
12958         {
12959           gint depth = gtk_tree_path_get_depth (path);
12960           gboolean rtl;
12961
12962           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12963
12964           if (!rtl)
12965             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12966           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12967
12968           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12969             {
12970               if (!rtl)
12971                 rect->x += depth * tree_view->priv->expander_size;
12972               rect->width -= depth * tree_view->priv->expander_size;
12973             }
12974
12975           rect->width = MAX (rect->width, 0);
12976         }
12977     }
12978 }
12979
12980 /**
12981  * gtk_tree_view_get_background_area:
12982  * @tree_view: a #GtkTreeView
12983  * @path: (allow-none): a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12984  * @column: (allow-none): a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12985  * @rect: rectangle to fill with cell background rect
12986  *
12987  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12988  * row specified by @path and the column specified by @column.  If @path is
12989  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12990  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12991  * fields will be filled with 0.  The returned rectangle is equivalent to the
12992  * @background_area passed to gtk_cell_renderer_render().  These background
12993  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
12994  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
12995  * itself, excluding surrounding borders and the tree expander area.
12996  *
12997  **/
12998 void
12999 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
13000                                    GtkTreePath        *path,
13001                                    GtkTreeViewColumn  *column,
13002                                    GdkRectangle       *rect)
13003 {
13004   GtkRBTree *tree = NULL;
13005   GtkRBNode *node = NULL;
13006
13007   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13008   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
13009   g_return_if_fail (rect != NULL);
13010
13011   rect->x = 0;
13012   rect->y = 0;
13013   rect->width = 0;
13014   rect->height = 0;
13015
13016   if (path)
13017     {
13018       /* Get vertical coords */
13019
13020       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
13021           tree == NULL)
13022         return;
13023
13024       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
13025
13026       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13027     }
13028
13029   if (column)
13030     {
13031       gint x2 = 0;
13032
13033       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
13034       rect->width = x2 - rect->x;
13035     }
13036 }
13037
13038 /**
13039  * gtk_tree_view_get_visible_rect:
13040  * @tree_view: a #GtkTreeView
13041  * @visible_rect: rectangle to fill
13042  *
13043  * Fills @visible_rect with the currently-visible region of the
13044  * buffer, in tree coordinates. Convert to bin_window coordinates with
13045  * gtk_tree_view_convert_tree_to_bin_window_coords().
13046  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
13047  * scrollable area of the tree.
13048  **/
13049 void
13050 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
13051                                 GdkRectangle *visible_rect)
13052 {
13053   GtkWidget *widget;
13054
13055   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13056
13057   widget = GTK_WIDGET (tree_view);
13058
13059   if (visible_rect)
13060     {
13061       visible_rect->x = tree_view->priv->hadjustment->value;
13062       visible_rect->y = tree_view->priv->vadjustment->value;
13063       visible_rect->width = widget->allocation.width;
13064       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
13065     }
13066 }
13067
13068 /**
13069  * gtk_tree_view_convert_widget_to_tree_coords:
13070  * @tree_view: a #GtkTreeView
13071  * @wx: X coordinate relative to the widget
13072  * @wy: Y coordinate relative to the widget
13073  * @tx: return location for tree X coordinate
13074  * @ty: return location for tree Y coordinate
13075  *
13076  * Converts widget coordinates to coordinates for the
13077  * tree (the full scrollable area of the tree).
13078  *
13079  * Since: 2.12
13080  **/
13081 void
13082 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13083                                              gint         wx,
13084                                              gint         wy,
13085                                              gint        *tx,
13086                                              gint        *ty)
13087 {
13088   gint x, y;
13089
13090   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13091
13092   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13093                                                      wx, wy,
13094                                                      &x, &y);
13095   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13096                                                    x, y,
13097                                                    tx, ty);
13098 }
13099
13100 /**
13101  * gtk_tree_view_convert_tree_to_widget_coords:
13102  * @tree_view: a #GtkTreeView
13103  * @tx: X coordinate relative to the tree
13104  * @ty: Y coordinate relative to the tree
13105  * @wx: return location for widget X coordinate
13106  * @wy: return location for widget Y coordinate
13107  *
13108  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13109  * to widget coordinates.
13110  *
13111  * Since: 2.12
13112  **/
13113 void
13114 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13115                                              gint         tx,
13116                                              gint         ty,
13117                                              gint        *wx,
13118                                              gint        *wy)
13119 {
13120   gint x, y;
13121
13122   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13123
13124   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13125                                                    tx, ty,
13126                                                    &x, &y);
13127   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13128                                                      x, y,
13129                                                      wx, wy);
13130 }
13131
13132 /**
13133  * gtk_tree_view_convert_widget_to_bin_window_coords:
13134  * @tree_view: a #GtkTreeView
13135  * @wx: X coordinate relative to the widget
13136  * @wy: Y coordinate relative to the widget
13137  * @bx: return location for bin_window X coordinate
13138  * @by: return location for bin_window Y coordinate
13139  *
13140  * Converts widget coordinates to coordinates for the bin_window
13141  * (see gtk_tree_view_get_bin_window()).
13142  *
13143  * Since: 2.12
13144  **/
13145 void
13146 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13147                                                    gint         wx,
13148                                                    gint         wy,
13149                                                    gint        *bx,
13150                                                    gint        *by)
13151 {
13152   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13153
13154   if (bx)
13155     *bx = wx + tree_view->priv->hadjustment->value;
13156   if (by)
13157     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13158 }
13159
13160 /**
13161  * gtk_tree_view_convert_bin_window_to_widget_coords:
13162  * @tree_view: a #GtkTreeView
13163  * @bx: bin_window X coordinate
13164  * @by: bin_window Y coordinate
13165  * @wx: return location for widget X coordinate
13166  * @wy: return location for widget Y coordinate
13167  *
13168  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13169  * to widget relative coordinates.
13170  *
13171  * Since: 2.12
13172  **/
13173 void
13174 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13175                                                    gint         bx,
13176                                                    gint         by,
13177                                                    gint        *wx,
13178                                                    gint        *wy)
13179 {
13180   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13181
13182   if (wx)
13183     *wx = bx - tree_view->priv->hadjustment->value;
13184   if (wy)
13185     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13186 }
13187
13188 /**
13189  * gtk_tree_view_convert_tree_to_bin_window_coords:
13190  * @tree_view: a #GtkTreeView
13191  * @tx: tree X coordinate
13192  * @ty: tree Y coordinate
13193  * @bx: return location for X coordinate relative to bin_window
13194  * @by: return location for Y coordinate relative to bin_window
13195  *
13196  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13197  * to bin_window coordinates.
13198  *
13199  * Since: 2.12
13200  **/
13201 void
13202 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13203                                                  gint         tx,
13204                                                  gint         ty,
13205                                                  gint        *bx,
13206                                                  gint        *by)
13207 {
13208   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13209
13210   if (bx)
13211     *bx = tx;
13212   if (by)
13213     *by = ty - tree_view->priv->dy;
13214 }
13215
13216 /**
13217  * gtk_tree_view_convert_bin_window_to_tree_coords:
13218  * @tree_view: a #GtkTreeView
13219  * @bx: X coordinate relative to bin_window
13220  * @by: Y coordinate relative to bin_window
13221  * @tx: return location for tree X coordinate
13222  * @ty: return location for tree Y coordinate
13223  *
13224  * Converts bin_window coordinates to coordinates for the
13225  * tree (the full scrollable area of the tree).
13226  *
13227  * Since: 2.12
13228  **/
13229 void
13230 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13231                                                  gint         bx,
13232                                                  gint         by,
13233                                                  gint        *tx,
13234                                                  gint        *ty)
13235 {
13236   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13237
13238   if (tx)
13239     *tx = bx;
13240   if (ty)
13241     *ty = by + tree_view->priv->dy;
13242 }
13243
13244
13245
13246 /**
13247  * gtk_tree_view_get_visible_range:
13248  * @tree_view: A #GtkTreeView
13249  * @start_path: (allow-none): Return location for start of region, or %NULL.
13250  * @end_path: (allow-none): Return location for end of region, or %NULL.
13251  *
13252  * Sets @start_path and @end_path to be the first and last visible path.
13253  * Note that there may be invisible paths in between.
13254  *
13255  * The paths should be freed with gtk_tree_path_free() after use.
13256  *
13257  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13258  *
13259  * Since: 2.8
13260  **/
13261 gboolean
13262 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13263                                  GtkTreePath **start_path,
13264                                  GtkTreePath **end_path)
13265 {
13266   GtkRBTree *tree;
13267   GtkRBNode *node;
13268   gboolean retval;
13269
13270   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13271
13272   if (!tree_view->priv->tree)
13273     return FALSE;
13274
13275   retval = TRUE;
13276
13277   if (start_path)
13278     {
13279       _gtk_rbtree_find_offset (tree_view->priv->tree,
13280                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13281                                &tree, &node);
13282       if (node)
13283         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13284       else
13285         retval = FALSE;
13286     }
13287
13288   if (end_path)
13289     {
13290       gint y;
13291
13292       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13293         y = tree_view->priv->height - 1;
13294       else
13295         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13296
13297       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13298       if (node)
13299         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13300       else
13301         retval = FALSE;
13302     }
13303
13304   return retval;
13305 }
13306
13307 static void
13308 unset_reorderable (GtkTreeView *tree_view)
13309 {
13310   if (tree_view->priv->reorderable)
13311     {
13312       tree_view->priv->reorderable = FALSE;
13313       g_object_notify (G_OBJECT (tree_view), "reorderable");
13314     }
13315 }
13316
13317 /**
13318  * gtk_tree_view_enable_model_drag_source:
13319  * @tree_view: a #GtkTreeView
13320  * @start_button_mask: Mask of allowed buttons to start drag
13321  * @targets: the table of targets that the drag will support
13322  * @n_targets: the number of items in @targets
13323  * @actions: the bitmask of possible actions for a drag from this
13324  *    widget
13325  *
13326  * Turns @tree_view into a drag source for automatic DND. Calling this
13327  * method sets #GtkTreeView:reorderable to %FALSE.
13328  **/
13329 void
13330 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13331                                         GdkModifierType           start_button_mask,
13332                                         const GtkTargetEntry     *targets,
13333                                         gint                      n_targets,
13334                                         GdkDragAction             actions)
13335 {
13336   TreeViewDragInfo *di;
13337
13338   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13339
13340   gtk_drag_source_set (GTK_WIDGET (tree_view),
13341                        0,
13342                        targets,
13343                        n_targets,
13344                        actions);
13345
13346   di = ensure_info (tree_view);
13347
13348   di->start_button_mask = start_button_mask;
13349   di->source_actions = actions;
13350   di->source_set = TRUE;
13351
13352   unset_reorderable (tree_view);
13353 }
13354
13355 /**
13356  * gtk_tree_view_enable_model_drag_dest:
13357  * @tree_view: a #GtkTreeView
13358  * @targets: the table of targets that the drag will support
13359  * @n_targets: the number of items in @targets
13360  * @actions: the bitmask of possible actions for a drag from this
13361  *    widget
13362  *
13363  * Turns @tree_view into a drop destination for automatic DND. Calling
13364  * this method sets #GtkTreeView:reorderable to %FALSE.
13365  **/
13366 void
13367 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13368                                       const GtkTargetEntry     *targets,
13369                                       gint                      n_targets,
13370                                       GdkDragAction             actions)
13371 {
13372   TreeViewDragInfo *di;
13373
13374   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13375
13376   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13377                      0,
13378                      targets,
13379                      n_targets,
13380                      actions);
13381
13382   di = ensure_info (tree_view);
13383   di->dest_set = TRUE;
13384
13385   unset_reorderable (tree_view);
13386 }
13387
13388 /**
13389  * gtk_tree_view_unset_rows_drag_source:
13390  * @tree_view: a #GtkTreeView
13391  *
13392  * Undoes the effect of
13393  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13394  * #GtkTreeView:reorderable to %FALSE.
13395  **/
13396 void
13397 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13398 {
13399   TreeViewDragInfo *di;
13400
13401   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13402
13403   di = get_info (tree_view);
13404
13405   if (di)
13406     {
13407       if (di->source_set)
13408         {
13409           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13410           di->source_set = FALSE;
13411         }
13412
13413       if (!di->dest_set && !di->source_set)
13414         remove_info (tree_view);
13415     }
13416
13417   unset_reorderable (tree_view);
13418 }
13419
13420 /**
13421  * gtk_tree_view_unset_rows_drag_dest:
13422  * @tree_view: a #GtkTreeView
13423  *
13424  * Undoes the effect of
13425  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13426  * #GtkTreeView:reorderable to %FALSE.
13427  **/
13428 void
13429 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13430 {
13431   TreeViewDragInfo *di;
13432
13433   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13434
13435   di = get_info (tree_view);
13436
13437   if (di)
13438     {
13439       if (di->dest_set)
13440         {
13441           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13442           di->dest_set = FALSE;
13443         }
13444
13445       if (!di->dest_set && !di->source_set)
13446         remove_info (tree_view);
13447     }
13448
13449   unset_reorderable (tree_view);
13450 }
13451
13452 /**
13453  * gtk_tree_view_set_drag_dest_row:
13454  * @tree_view: a #GtkTreeView
13455  * @path: (allow-none): The path of the row to highlight, or %NULL.
13456  * @pos: Specifies whether to drop before, after or into the row
13457  *
13458  * Sets the row that is highlighted for feedback.
13459  **/
13460 void
13461 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13462                                  GtkTreePath            *path,
13463                                  GtkTreeViewDropPosition pos)
13464 {
13465   GtkTreePath *current_dest;
13466
13467   /* Note; this function is exported to allow a custom DND
13468    * implementation, so it can't touch TreeViewDragInfo
13469    */
13470
13471   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13472
13473   current_dest = NULL;
13474
13475   if (tree_view->priv->drag_dest_row)
13476     {
13477       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13478       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13479     }
13480
13481   /* special case a drop on an empty model */
13482   tree_view->priv->empty_view_drop = 0;
13483
13484   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13485       && gtk_tree_path_get_depth (path) == 1
13486       && gtk_tree_path_get_indices (path)[0] == 0)
13487     {
13488       gint n_children;
13489
13490       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13491                                                    NULL);
13492
13493       if (!n_children)
13494         tree_view->priv->empty_view_drop = 1;
13495     }
13496
13497   tree_view->priv->drag_dest_pos = pos;
13498
13499   if (path)
13500     {
13501       tree_view->priv->drag_dest_row =
13502         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13503       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13504     }
13505   else
13506     tree_view->priv->drag_dest_row = NULL;
13507
13508   if (current_dest)
13509     {
13510       GtkRBTree *tree, *new_tree;
13511       GtkRBNode *node, *new_node;
13512
13513       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13514       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13515
13516       if (tree && node)
13517         {
13518           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13519           if (new_tree && new_node)
13520             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13521
13522           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13523           if (new_tree && new_node)
13524             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13525         }
13526       gtk_tree_path_free (current_dest);
13527     }
13528 }
13529
13530 /**
13531  * gtk_tree_view_get_drag_dest_row:
13532  * @tree_view: a #GtkTreeView
13533  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13534  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13535  *
13536  * Gets information about the row that is highlighted for feedback.
13537  **/
13538 void
13539 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13540                                  GtkTreePath             **path,
13541                                  GtkTreeViewDropPosition  *pos)
13542 {
13543   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13544
13545   if (path)
13546     {
13547       if (tree_view->priv->drag_dest_row)
13548         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13549       else
13550         {
13551           if (tree_view->priv->empty_view_drop)
13552             *path = gtk_tree_path_new_from_indices (0, -1);
13553           else
13554             *path = NULL;
13555         }
13556     }
13557
13558   if (pos)
13559     *pos = tree_view->priv->drag_dest_pos;
13560 }
13561
13562 /**
13563  * gtk_tree_view_get_dest_row_at_pos:
13564  * @tree_view: a #GtkTreeView
13565  * @drag_x: the position to determine the destination row for
13566  * @drag_y: the position to determine the destination row for
13567  * @path: (out) (allow-none): Return location for the path of the highlighted row, or %NULL.
13568  * @pos: (out) (allow-none): Return location for the drop position, or %NULL
13569  *
13570  * Determines the destination row for a given position.  @drag_x and
13571  * @drag_y are expected to be in widget coordinates.  This function is only
13572  * meaningful if @tree_view is realized.  Therefore this function will always
13573  * return %FALSE if @tree_view is not realized or does not have a model.
13574  *
13575  * Return value: whether there is a row at the given position, %TRUE if this
13576  * is indeed the case.
13577  **/
13578 gboolean
13579 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13580                                    gint                     drag_x,
13581                                    gint                     drag_y,
13582                                    GtkTreePath            **path,
13583                                    GtkTreeViewDropPosition *pos)
13584 {
13585   gint cell_y;
13586   gint bin_x, bin_y;
13587   gdouble offset_into_row;
13588   gdouble third;
13589   GdkRectangle cell;
13590   GtkTreeViewColumn *column = NULL;
13591   GtkTreePath *tmp_path = NULL;
13592
13593   /* Note; this function is exported to allow a custom DND
13594    * implementation, so it can't touch TreeViewDragInfo
13595    */
13596
13597   g_return_val_if_fail (tree_view != NULL, FALSE);
13598   g_return_val_if_fail (drag_x >= 0, FALSE);
13599   g_return_val_if_fail (drag_y >= 0, FALSE);
13600
13601   if (path)
13602     *path = NULL;
13603
13604   if (tree_view->priv->bin_window == NULL)
13605     return FALSE;
13606
13607   if (tree_view->priv->tree == NULL)
13608     return FALSE;
13609
13610   /* If in the top third of a row, we drop before that row; if
13611    * in the bottom third, drop after that row; if in the middle,
13612    * and the row has children, drop into the row.
13613    */
13614   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13615                                                      &bin_x, &bin_y);
13616
13617   if (!gtk_tree_view_get_path_at_pos (tree_view,
13618                                       bin_x,
13619                                       bin_y,
13620                                       &tmp_path,
13621                                       &column,
13622                                       NULL,
13623                                       &cell_y))
13624     return FALSE;
13625
13626   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13627                                      &cell);
13628
13629   offset_into_row = cell_y;
13630
13631   if (path)
13632     *path = tmp_path;
13633   else
13634     gtk_tree_path_free (tmp_path);
13635
13636   tmp_path = NULL;
13637
13638   third = cell.height / 3.0;
13639
13640   if (pos)
13641     {
13642       if (offset_into_row < third)
13643         {
13644           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13645         }
13646       else if (offset_into_row < (cell.height / 2.0))
13647         {
13648           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13649         }
13650       else if (offset_into_row < third * 2.0)
13651         {
13652           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13653         }
13654       else
13655         {
13656           *pos = GTK_TREE_VIEW_DROP_AFTER;
13657         }
13658     }
13659
13660   return TRUE;
13661 }
13662
13663
13664
13665 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13666 /**
13667  * gtk_tree_view_create_row_drag_icon:
13668  * @tree_view: a #GtkTreeView
13669  * @path: a #GtkTreePath in @tree_view
13670  *
13671  * Creates a #GdkPixmap representation of the row at @path.
13672  * This image is used for a drag icon.
13673  *
13674  * Return value: a newly-allocated pixmap of the drag icon.
13675  **/
13676 GdkPixmap *
13677 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13678                                     GtkTreePath  *path)
13679 {
13680   GtkTreeIter   iter;
13681   GtkRBTree    *tree;
13682   GtkRBNode    *node;
13683   gint cell_offset;
13684   GList *list;
13685   GdkRectangle background_area;
13686   GdkRectangle expose_area;
13687   GtkWidget *widget;
13688   gint depth;
13689   /* start drawing inside the black outline */
13690   gint x = 1, y = 1;
13691   GdkDrawable *drawable;
13692   gint bin_window_width;
13693   gboolean is_separator = FALSE;
13694   gboolean rtl;
13695
13696   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13697   g_return_val_if_fail (path != NULL, NULL);
13698
13699   widget = GTK_WIDGET (tree_view);
13700
13701   if (!gtk_widget_get_realized (widget))
13702     return NULL;
13703
13704   depth = gtk_tree_path_get_depth (path);
13705
13706   _gtk_tree_view_find_node (tree_view,
13707                             path,
13708                             &tree,
13709                             &node);
13710
13711   if (tree == NULL)
13712     return NULL;
13713
13714   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13715                                 &iter,
13716                                 path))
13717     return NULL;
13718
13719   is_separator = row_is_separator (tree_view, &iter, NULL);
13720
13721   cell_offset = x;
13722
13723   background_area.y = y;
13724   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13725
13726   gdk_drawable_get_size (tree_view->priv->bin_window,
13727                          &bin_window_width, NULL);
13728
13729   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13730                              bin_window_width + 2,
13731                              background_area.height + 2,
13732                              -1);
13733
13734   expose_area.x = 0;
13735   expose_area.y = 0;
13736   expose_area.width = bin_window_width + 2;
13737   expose_area.height = background_area.height + 2;
13738
13739   gdk_draw_rectangle (drawable,
13740                       widget->style->base_gc [gtk_widget_get_state (widget)],
13741                       TRUE,
13742                       0, 0,
13743                       bin_window_width + 2,
13744                       background_area.height + 2);
13745
13746   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13747
13748   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13749       list;
13750       list = (rtl ? list->prev : list->next))
13751     {
13752       GtkTreeViewColumn *column = list->data;
13753       GdkRectangle cell_area;
13754       gint vertical_separator;
13755
13756       if (!column->visible)
13757         continue;
13758
13759       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13760                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13761                                                node->children?TRUE:FALSE);
13762
13763       background_area.x = cell_offset;
13764       background_area.width = column->width;
13765
13766       gtk_widget_style_get (widget,
13767                             "vertical-separator", &vertical_separator,
13768                             NULL);
13769
13770       cell_area = background_area;
13771
13772       cell_area.y += vertical_separator / 2;
13773       cell_area.height -= vertical_separator;
13774
13775       if (gtk_tree_view_is_expander_column (tree_view, column))
13776         {
13777           if (!rtl)
13778             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13779           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13780
13781           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13782             {
13783               if (!rtl)
13784                 cell_area.x += depth * tree_view->priv->expander_size;
13785               cell_area.width -= depth * tree_view->priv->expander_size;
13786             }
13787         }
13788
13789       if (gtk_tree_view_column_cell_is_visible (column))
13790         {
13791           if (is_separator)
13792             gtk_paint_hline (widget->style,
13793                              drawable,
13794                              GTK_STATE_NORMAL,
13795                              &cell_area,
13796                              widget,
13797                              NULL,
13798                              cell_area.x,
13799                              cell_area.x + cell_area.width,
13800                              cell_area.y + cell_area.height / 2);
13801           else
13802             _gtk_tree_view_column_cell_render (column,
13803                                                drawable,
13804                                                &background_area,
13805                                                &cell_area,
13806                                                &expose_area,
13807                                                0);
13808         }
13809       cell_offset += column->width;
13810     }
13811
13812   gdk_draw_rectangle (drawable,
13813                       widget->style->black_gc,
13814                       FALSE,
13815                       0, 0,
13816                       bin_window_width + 1,
13817                       background_area.height + 1);
13818
13819   return drawable;
13820 }
13821
13822
13823 /**
13824  * gtk_tree_view_set_destroy_count_func:
13825  * @tree_view: A #GtkTreeView
13826  * @func: (allow-none): Function to be called when a view row is destroyed, or %NULL
13827  * @data: (allow-none): User data to be passed to @func, or %NULL
13828  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
13829  *
13830  * This function should almost never be used.  It is meant for private use by
13831  * ATK for determining the number of visible children that are removed when the
13832  * user collapses a row, or a row is deleted.
13833  **/
13834 void
13835 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13836                                       GtkTreeDestroyCountFunc  func,
13837                                       gpointer                 data,
13838                                       GDestroyNotify           destroy)
13839 {
13840   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13841
13842   if (tree_view->priv->destroy_count_destroy)
13843     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13844
13845   tree_view->priv->destroy_count_func = func;
13846   tree_view->priv->destroy_count_data = data;
13847   tree_view->priv->destroy_count_destroy = destroy;
13848 }
13849
13850
13851 /*
13852  * Interactive search
13853  */
13854
13855 /**
13856  * gtk_tree_view_set_enable_search:
13857  * @tree_view: A #GtkTreeView
13858  * @enable_search: %TRUE, if the user can search interactively
13859  *
13860  * If @enable_search is set, then the user can type in text to search through
13861  * the tree interactively (this is sometimes called "typeahead find").
13862  *
13863  * Note that even if this is %FALSE, the user can still initiate a search
13864  * using the "start-interactive-search" key binding.
13865  */
13866 void
13867 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13868                                  gboolean     enable_search)
13869 {
13870   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13871
13872   enable_search = !!enable_search;
13873
13874   if (tree_view->priv->enable_search != enable_search)
13875     {
13876        tree_view->priv->enable_search = enable_search;
13877        g_object_notify (G_OBJECT (tree_view), "enable-search");
13878     }
13879 }
13880
13881 /**
13882  * gtk_tree_view_get_enable_search:
13883  * @tree_view: A #GtkTreeView
13884  *
13885  * Returns whether or not the tree allows to start interactive searching
13886  * by typing in text.
13887  *
13888  * Return value: whether or not to let the user search interactively
13889  */
13890 gboolean
13891 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13892 {
13893   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13894
13895   return tree_view->priv->enable_search;
13896 }
13897
13898
13899 /**
13900  * gtk_tree_view_get_search_column:
13901  * @tree_view: A #GtkTreeView
13902  *
13903  * Gets the column searched on by the interactive search code.
13904  *
13905  * Return value: the column the interactive search code searches in.
13906  */
13907 gint
13908 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13909 {
13910   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13911
13912   return (tree_view->priv->search_column);
13913 }
13914
13915 /**
13916  * gtk_tree_view_set_search_column:
13917  * @tree_view: A #GtkTreeView
13918  * @column: the column of the model to search in, or -1 to disable searching
13919  *
13920  * Sets @column as the column where the interactive search code should
13921  * search in for the current model.
13922  *
13923  * If the search column is set, users can use the "start-interactive-search"
13924  * key binding to bring up search popup. The enable-search property controls
13925  * whether simply typing text will also start an interactive search.
13926  *
13927  * Note that @column refers to a column of the current model. The search
13928  * column is reset to -1 when the model is changed.
13929  */
13930 void
13931 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13932                                  gint         column)
13933 {
13934   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13935   g_return_if_fail (column >= -1);
13936
13937   if (tree_view->priv->search_column == column)
13938     return;
13939
13940   tree_view->priv->search_column = column;
13941   g_object_notify (G_OBJECT (tree_view), "search-column");
13942 }
13943
13944 /**
13945  * gtk_tree_view_get_search_equal_func:
13946  * @tree_view: A #GtkTreeView
13947  *
13948  * Returns the compare function currently in use.
13949  *
13950  * Return value: the currently used compare function for the search code.
13951  */
13952
13953 GtkTreeViewSearchEqualFunc
13954 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13955 {
13956   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13957
13958   return tree_view->priv->search_equal_func;
13959 }
13960
13961 /**
13962  * gtk_tree_view_set_search_equal_func:
13963  * @tree_view: A #GtkTreeView
13964  * @search_equal_func: the compare function to use during the search
13965  * @search_user_data: (allow-none): user data to pass to @search_equal_func, or %NULL
13966  * @search_destroy: (allow-none): Destroy notifier for @search_user_data, or %NULL
13967  *
13968  * Sets the compare function for the interactive search capabilities; note
13969  * that somewhat like strcmp() returning 0 for equality
13970  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
13971  **/
13972 void
13973 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
13974                                      GtkTreeViewSearchEqualFunc  search_equal_func,
13975                                      gpointer                    search_user_data,
13976                                      GDestroyNotify              search_destroy)
13977 {
13978   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13979   g_return_if_fail (search_equal_func != NULL);
13980
13981   if (tree_view->priv->search_destroy)
13982     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
13983
13984   tree_view->priv->search_equal_func = search_equal_func;
13985   tree_view->priv->search_user_data = search_user_data;
13986   tree_view->priv->search_destroy = search_destroy;
13987   if (tree_view->priv->search_equal_func == NULL)
13988     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
13989 }
13990
13991 /**
13992  * gtk_tree_view_get_search_entry:
13993  * @tree_view: A #GtkTreeView
13994  *
13995  * Returns the #GtkEntry which is currently in use as interactive search
13996  * entry for @tree_view.  In case the built-in entry is being used, %NULL
13997  * will be returned.
13998  *
13999  * Return value: the entry currently in use as search entry.
14000  *
14001  * Since: 2.10
14002  */
14003 GtkEntry *
14004 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
14005 {
14006   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14007
14008   if (tree_view->priv->search_custom_entry_set)
14009     return GTK_ENTRY (tree_view->priv->search_entry);
14010
14011   return NULL;
14012 }
14013
14014 /**
14015  * gtk_tree_view_set_search_entry:
14016  * @tree_view: A #GtkTreeView
14017  * @entry: (allow-none): the entry the interactive search code of @tree_view should use or %NULL
14018  *
14019  * Sets the entry which the interactive search code will use for this
14020  * @tree_view.  This is useful when you want to provide a search entry
14021  * in our interface at all time at a fixed position.  Passing %NULL for
14022  * @entry will make the interactive search code use the built-in popup
14023  * entry again.
14024  *
14025  * Since: 2.10
14026  */
14027 void
14028 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
14029                                 GtkEntry    *entry)
14030 {
14031   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14032   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
14033
14034   if (tree_view->priv->search_custom_entry_set)
14035     {
14036       if (tree_view->priv->search_entry_changed_id)
14037         {
14038           g_signal_handler_disconnect (tree_view->priv->search_entry,
14039                                        tree_view->priv->search_entry_changed_id);
14040           tree_view->priv->search_entry_changed_id = 0;
14041         }
14042       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
14043                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
14044                                             tree_view);
14045
14046       g_object_unref (tree_view->priv->search_entry);
14047     }
14048   else if (tree_view->priv->search_window)
14049     {
14050       gtk_widget_destroy (tree_view->priv->search_window);
14051
14052       tree_view->priv->search_window = NULL;
14053     }
14054
14055   if (entry)
14056     {
14057       tree_view->priv->search_entry = g_object_ref (entry);
14058       tree_view->priv->search_custom_entry_set = TRUE;
14059
14060       if (tree_view->priv->search_entry_changed_id == 0)
14061         {
14062           tree_view->priv->search_entry_changed_id =
14063             g_signal_connect (tree_view->priv->search_entry, "changed",
14064                               G_CALLBACK (gtk_tree_view_search_init),
14065                               tree_view);
14066         }
14067
14068         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
14069                           G_CALLBACK (gtk_tree_view_search_key_press_event),
14070                           tree_view);
14071
14072         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14073     }
14074   else
14075     {
14076       tree_view->priv->search_entry = NULL;
14077       tree_view->priv->search_custom_entry_set = FALSE;
14078     }
14079 }
14080
14081 /**
14082  * gtk_tree_view_set_search_position_func:
14083  * @tree_view: A #GtkTreeView
14084  * @func: (allow-none): the function to use to position the search dialog, or %NULL
14085  *    to use the default search position function
14086  * @data: (allow-none): user data to pass to @func, or %NULL
14087  * @destroy: (allow-none): Destroy notifier for @data, or %NULL
14088  *
14089  * Sets the function to use when positioning the search dialog.
14090  *
14091  * Since: 2.10
14092  **/
14093 void
14094 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14095                                         GtkTreeViewSearchPositionFunc  func,
14096                                         gpointer                       user_data,
14097                                         GDestroyNotify                 destroy)
14098 {
14099   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14100
14101   if (tree_view->priv->search_position_destroy)
14102     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14103
14104   tree_view->priv->search_position_func = func;
14105   tree_view->priv->search_position_user_data = user_data;
14106   tree_view->priv->search_position_destroy = destroy;
14107   if (tree_view->priv->search_position_func == NULL)
14108     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14109 }
14110
14111 /**
14112  * gtk_tree_view_get_search_position_func:
14113  * @tree_view: A #GtkTreeView
14114  *
14115  * Returns the positioning function currently in use.
14116  *
14117  * Return value: the currently used function for positioning the search dialog.
14118  *
14119  * Since: 2.10
14120  */
14121 GtkTreeViewSearchPositionFunc
14122 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14123 {
14124   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14125
14126   return tree_view->priv->search_position_func;
14127 }
14128
14129
14130 static void
14131 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14132                                   GtkTreeView *tree_view,
14133                                   GdkDevice   *device)
14134 {
14135   if (tree_view->priv->disable_popdown)
14136     return;
14137
14138   if (tree_view->priv->search_entry_changed_id)
14139     {
14140       g_signal_handler_disconnect (tree_view->priv->search_entry,
14141                                    tree_view->priv->search_entry_changed_id);
14142       tree_view->priv->search_entry_changed_id = 0;
14143     }
14144   if (tree_view->priv->typeselect_flush_timeout)
14145     {
14146       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14147       tree_view->priv->typeselect_flush_timeout = 0;
14148     }
14149
14150   if (gtk_widget_get_visible (search_dialog))
14151     {
14152       /* send focus-in event */
14153       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), device, FALSE);
14154       gtk_widget_hide (search_dialog);
14155       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14156       send_focus_change (GTK_WIDGET (tree_view), device, TRUE);
14157     }
14158 }
14159
14160 static void
14161 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14162                                     GtkWidget   *search_dialog,
14163                                     gpointer     user_data)
14164 {
14165   gint x, y;
14166   gint tree_x, tree_y;
14167   gint tree_width, tree_height;
14168   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14169   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14170   GtkRequisition requisition;
14171   gint monitor_num;
14172   GdkRectangle monitor;
14173
14174   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14175   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14176
14177   gtk_widget_realize (search_dialog);
14178
14179   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14180   gdk_drawable_get_size (tree_window,
14181                          &tree_width,
14182                          &tree_height);
14183   gtk_widget_size_request (search_dialog, &requisition);
14184
14185   if (tree_x + tree_width > gdk_screen_get_width (screen))
14186     x = gdk_screen_get_width (screen) - requisition.width;
14187   else if (tree_x + tree_width - requisition.width < 0)
14188     x = 0;
14189   else
14190     x = tree_x + tree_width - requisition.width;
14191
14192   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14193     y = gdk_screen_get_height (screen) - requisition.height;
14194   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14195     y = 0;
14196   else
14197     y = tree_y + tree_height;
14198
14199   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14200 }
14201
14202 static void
14203 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14204                                       GtkMenu  *menu,
14205                                       gpointer  data)
14206 {
14207   GtkTreeView *tree_view = (GtkTreeView *)data;
14208
14209   tree_view->priv->disable_popdown = 1;
14210   g_signal_connect (menu, "hide",
14211                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14212 }
14213
14214 /* Because we're visible but offscreen, we just set a flag in the preedit
14215  * callback.
14216  */
14217 static void
14218 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14219                                       GtkTreeView  *tree_view)
14220 {
14221   tree_view->priv->imcontext_changed = 1;
14222   if (tree_view->priv->typeselect_flush_timeout)
14223     {
14224       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14225       tree_view->priv->typeselect_flush_timeout =
14226         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14227                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14228                        tree_view);
14229     }
14230
14231 }
14232
14233 static void
14234 gtk_tree_view_search_activate (GtkEntry    *entry,
14235                                GtkTreeView *tree_view)
14236 {
14237   GtkTreePath *path;
14238   GtkRBNode *node;
14239   GtkRBTree *tree;
14240
14241   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14242                                     tree_view,
14243                                     gtk_get_current_event_device ());
14244
14245   /* If we have a row selected and it's the cursor row, we activate
14246    * the row XXX */
14247   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14248     {
14249       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14250
14251       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14252
14253       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14254         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14255
14256       gtk_tree_path_free (path);
14257     }
14258 }
14259
14260 static gboolean
14261 gtk_tree_view_real_search_enable_popdown (gpointer data)
14262 {
14263   GtkTreeView *tree_view = (GtkTreeView *)data;
14264
14265   tree_view->priv->disable_popdown = 0;
14266
14267   return FALSE;
14268 }
14269
14270 static void
14271 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14272                                      gpointer   data)
14273 {
14274   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14275 }
14276
14277 static gboolean
14278 gtk_tree_view_search_delete_event (GtkWidget *widget,
14279                                    GdkEventAny *event,
14280                                    GtkTreeView *tree_view)
14281 {
14282   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14283
14284   gtk_tree_view_search_dialog_hide (widget, tree_view, NULL);
14285
14286   return TRUE;
14287 }
14288
14289 static gboolean
14290 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14291                                          GdkEventButton *event,
14292                                          GtkTreeView *tree_view)
14293 {
14294   GdkDevice *keyb_device;
14295
14296   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14297
14298   keyb_device = gdk_device_get_associated_device (event->device);
14299   gtk_tree_view_search_dialog_hide (widget, tree_view, keyb_device);
14300
14301   if (event->window == tree_view->priv->bin_window)
14302     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14303
14304   return TRUE;
14305 }
14306
14307 static gboolean
14308 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14309                                    GdkEventScroll *event,
14310                                    GtkTreeView *tree_view)
14311 {
14312   gboolean retval = FALSE;
14313
14314   if (event->direction == GDK_SCROLL_UP)
14315     {
14316       gtk_tree_view_search_move (widget, tree_view, TRUE);
14317       retval = TRUE;
14318     }
14319   else if (event->direction == GDK_SCROLL_DOWN)
14320     {
14321       gtk_tree_view_search_move (widget, tree_view, FALSE);
14322       retval = TRUE;
14323     }
14324
14325   /* renew the flush timeout */
14326   if (retval && tree_view->priv->typeselect_flush_timeout
14327       && !tree_view->priv->search_custom_entry_set)
14328     {
14329       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14330       tree_view->priv->typeselect_flush_timeout =
14331         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14332                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14333                        tree_view);
14334     }
14335
14336   return retval;
14337 }
14338
14339 static gboolean
14340 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14341                                       GdkEventKey *event,
14342                                       GtkTreeView *tree_view)
14343 {
14344   gboolean retval = FALSE;
14345
14346   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14347   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14348
14349   /* close window and cancel the search */
14350   if (!tree_view->priv->search_custom_entry_set
14351       && (event->keyval == GDK_Escape ||
14352           event->keyval == GDK_Tab ||
14353             event->keyval == GDK_KP_Tab ||
14354             event->keyval == GDK_ISO_Left_Tab))
14355     {
14356       gtk_tree_view_search_dialog_hide (widget, tree_view,
14357                                         gdk_event_get_device ((GdkEvent *) event));
14358       return TRUE;
14359     }
14360
14361   /* select previous matching iter */
14362   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14363     {
14364       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14365         gtk_widget_error_bell (widget);
14366
14367       retval = TRUE;
14368     }
14369
14370   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK))
14371       && (event->keyval == GDK_g || event->keyval == GDK_G))
14372     {
14373       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14374         gtk_widget_error_bell (widget);
14375
14376       retval = TRUE;
14377     }
14378
14379   /* select next matching iter */
14380   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14381     {
14382       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14383         gtk_widget_error_bell (widget);
14384
14385       retval = TRUE;
14386     }
14387
14388   if (((event->state & (GTK_DEFAULT_ACCEL_MOD_MASK | GDK_SHIFT_MASK)) == GTK_DEFAULT_ACCEL_MOD_MASK)
14389       && (event->keyval == GDK_g || event->keyval == GDK_G))
14390     {
14391       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14392         gtk_widget_error_bell (widget);
14393
14394       retval = TRUE;
14395     }
14396
14397   /* renew the flush timeout */
14398   if (retval && tree_view->priv->typeselect_flush_timeout
14399       && !tree_view->priv->search_custom_entry_set)
14400     {
14401       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14402       tree_view->priv->typeselect_flush_timeout =
14403         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14404                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14405                        tree_view);
14406     }
14407
14408   return retval;
14409 }
14410
14411 /*  this function returns FALSE if there is a search string but
14412  *  nothing was found, and TRUE otherwise.
14413  */
14414 static gboolean
14415 gtk_tree_view_search_move (GtkWidget   *window,
14416                            GtkTreeView *tree_view,
14417                            gboolean     up)
14418 {
14419   gboolean ret;
14420   gint len;
14421   gint count = 0;
14422   const gchar *text;
14423   GtkTreeIter iter;
14424   GtkTreeModel *model;
14425   GtkTreeSelection *selection;
14426
14427   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14428
14429   g_return_val_if_fail (text != NULL, FALSE);
14430
14431   len = strlen (text);
14432
14433   if (up && tree_view->priv->selected_iter == 1)
14434     return strlen (text) < 1;
14435
14436   len = strlen (text);
14437
14438   if (len < 1)
14439     return TRUE;
14440
14441   model = gtk_tree_view_get_model (tree_view);
14442   selection = gtk_tree_view_get_selection (tree_view);
14443
14444   /* search */
14445   gtk_tree_selection_unselect_all (selection);
14446   if (!gtk_tree_model_get_iter_first (model, &iter))
14447     return TRUE;
14448
14449   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14450                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14451
14452   if (ret)
14453     {
14454       /* found */
14455       tree_view->priv->selected_iter += up?(-1):(1);
14456       return TRUE;
14457     }
14458   else
14459     {
14460       /* return to old iter */
14461       count = 0;
14462       gtk_tree_model_get_iter_first (model, &iter);
14463       gtk_tree_view_search_iter (model, selection,
14464                                  &iter, text,
14465                                  &count, tree_view->priv->selected_iter);
14466       return FALSE;
14467     }
14468 }
14469
14470 static gboolean
14471 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14472                                  gint          column,
14473                                  const gchar  *key,
14474                                  GtkTreeIter  *iter,
14475                                  gpointer      search_data)
14476 {
14477   gboolean retval = TRUE;
14478   const gchar *str;
14479   gchar *normalized_string;
14480   gchar *normalized_key;
14481   gchar *case_normalized_string = NULL;
14482   gchar *case_normalized_key = NULL;
14483   GValue value = {0,};
14484   GValue transformed = {0,};
14485
14486   gtk_tree_model_get_value (model, iter, column, &value);
14487
14488   g_value_init (&transformed, G_TYPE_STRING);
14489
14490   if (!g_value_transform (&value, &transformed))
14491     {
14492       g_value_unset (&value);
14493       return TRUE;
14494     }
14495
14496   g_value_unset (&value);
14497
14498   str = g_value_get_string (&transformed);
14499   if (!str)
14500     {
14501       g_value_unset (&transformed);
14502       return TRUE;
14503     }
14504
14505   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14506   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14507
14508   if (normalized_string && normalized_key)
14509     {
14510       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14511       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14512
14513       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14514         retval = FALSE;
14515     }
14516
14517   g_value_unset (&transformed);
14518   g_free (normalized_key);
14519   g_free (normalized_string);
14520   g_free (case_normalized_key);
14521   g_free (case_normalized_string);
14522
14523   return retval;
14524 }
14525
14526 static gboolean
14527 gtk_tree_view_search_iter (GtkTreeModel     *model,
14528                            GtkTreeSelection *selection,
14529                            GtkTreeIter      *iter,
14530                            const gchar      *text,
14531                            gint             *count,
14532                            gint              n)
14533 {
14534   GtkRBTree *tree = NULL;
14535   GtkRBNode *node = NULL;
14536   GtkTreePath *path;
14537
14538   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14539
14540   path = gtk_tree_model_get_path (model, iter);
14541   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14542
14543   do
14544     {
14545       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14546         {
14547           (*count)++;
14548           if (*count == n)
14549             {
14550               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14551                                             TRUE, 0.5, 0.0);
14552               gtk_tree_selection_select_iter (selection, iter);
14553               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14554
14555               if (path)
14556                 gtk_tree_path_free (path);
14557
14558               return TRUE;
14559             }
14560         }
14561
14562       if (node->children)
14563         {
14564           gboolean has_child;
14565           GtkTreeIter tmp;
14566
14567           tree = node->children;
14568           node = tree->root;
14569
14570           while (node->left != tree->nil)
14571             node = node->left;
14572
14573           tmp = *iter;
14574           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14575           gtk_tree_path_down (path);
14576
14577           /* sanity check */
14578           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14579         }
14580       else
14581         {
14582           gboolean done = FALSE;
14583
14584           do
14585             {
14586               node = _gtk_rbtree_next (tree, node);
14587
14588               if (node)
14589                 {
14590                   gboolean has_next;
14591
14592                   has_next = gtk_tree_model_iter_next (model, iter);
14593
14594                   done = TRUE;
14595                   gtk_tree_path_next (path);
14596
14597                   /* sanity check */
14598                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14599                 }
14600               else
14601                 {
14602                   gboolean has_parent;
14603                   GtkTreeIter tmp_iter = *iter;
14604
14605                   node = tree->parent_node;
14606                   tree = tree->parent_tree;
14607
14608                   if (!tree)
14609                     {
14610                       if (path)
14611                         gtk_tree_path_free (path);
14612
14613                       /* we've run out of tree, done with this func */
14614                       return FALSE;
14615                     }
14616
14617                   has_parent = gtk_tree_model_iter_parent (model,
14618                                                            iter,
14619                                                            &tmp_iter);
14620                   gtk_tree_path_up (path);
14621
14622                   /* sanity check */
14623                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14624                 }
14625             }
14626           while (!done);
14627         }
14628     }
14629   while (1);
14630
14631   return FALSE;
14632 }
14633
14634 static void
14635 gtk_tree_view_search_init (GtkWidget   *entry,
14636                            GtkTreeView *tree_view)
14637 {
14638   gint ret;
14639   gint count = 0;
14640   const gchar *text;
14641   GtkTreeIter iter;
14642   GtkTreeModel *model;
14643   GtkTreeSelection *selection;
14644
14645   g_return_if_fail (GTK_IS_ENTRY (entry));
14646   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14647
14648   text = gtk_entry_get_text (GTK_ENTRY (entry));
14649
14650   model = gtk_tree_view_get_model (tree_view);
14651   selection = gtk_tree_view_get_selection (tree_view);
14652
14653   /* search */
14654   gtk_tree_selection_unselect_all (selection);
14655   if (tree_view->priv->typeselect_flush_timeout
14656       && !tree_view->priv->search_custom_entry_set)
14657     {
14658       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14659       tree_view->priv->typeselect_flush_timeout =
14660         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14661                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14662                        tree_view);
14663     }
14664
14665   if (*text == '\0')
14666     return;
14667
14668   if (!gtk_tree_model_get_iter_first (model, &iter))
14669     return;
14670
14671   ret = gtk_tree_view_search_iter (model, selection,
14672                                    &iter, text,
14673                                    &count, 1);
14674
14675   if (ret)
14676     tree_view->priv->selected_iter = 1;
14677 }
14678
14679 static void
14680 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14681                              GtkTreeView     *tree_view)
14682 {
14683   if (tree_view->priv->edited_column == NULL)
14684     return;
14685
14686   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14687   tree_view->priv->edited_column = NULL;
14688
14689   if (gtk_widget_has_focus (GTK_WIDGET (cell_editable)))
14690     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14691
14692   g_signal_handlers_disconnect_by_func (cell_editable,
14693                                         gtk_tree_view_remove_widget,
14694                                         tree_view);
14695
14696   gtk_container_remove (GTK_CONTAINER (tree_view),
14697                         GTK_WIDGET (cell_editable));
14698
14699   /* FIXME should only redraw a single node */
14700   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14701 }
14702
14703 static gboolean
14704 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14705                              GtkTreePath *cursor_path)
14706 {
14707   GtkTreeIter iter;
14708   GdkRectangle background_area;
14709   GdkRectangle cell_area;
14710   GtkCellEditable *editable_widget = NULL;
14711   gchar *path_string;
14712   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14713   gint retval = FALSE;
14714   GtkRBTree *cursor_tree;
14715   GtkRBNode *cursor_node;
14716
14717   g_assert (tree_view->priv->focus_column);
14718
14719   if (!gtk_widget_get_realized (GTK_WIDGET (tree_view)))
14720     return FALSE;
14721
14722   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14723       cursor_node == NULL)
14724     return FALSE;
14725
14726   path_string = gtk_tree_path_to_string (cursor_path);
14727   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14728
14729   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14730
14731   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14732                                            tree_view->priv->model,
14733                                            &iter,
14734                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14735                                            cursor_node->children?TRUE:FALSE);
14736   gtk_tree_view_get_background_area (tree_view,
14737                                      cursor_path,
14738                                      tree_view->priv->focus_column,
14739                                      &background_area);
14740   gtk_tree_view_get_cell_area (tree_view,
14741                                cursor_path,
14742                                tree_view->priv->focus_column,
14743                                &cell_area);
14744
14745   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14746                                         &editable_widget,
14747                                         NULL,
14748                                         path_string,
14749                                         &background_area,
14750                                         &cell_area,
14751                                         flags))
14752     {
14753       retval = TRUE;
14754       if (editable_widget != NULL)
14755         {
14756           gint left, right;
14757           GdkRectangle area;
14758           GtkCellRenderer *cell;
14759
14760           area = cell_area;
14761           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14762
14763           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14764
14765           area.x += left;
14766           area.width -= right + left;
14767
14768           gtk_tree_view_real_start_editing (tree_view,
14769                                             tree_view->priv->focus_column,
14770                                             cursor_path,
14771                                             editable_widget,
14772                                             &area,
14773                                             NULL,
14774                                             flags);
14775         }
14776
14777     }
14778   g_free (path_string);
14779   return retval;
14780 }
14781
14782 static void
14783 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14784                                   GtkTreeViewColumn *column,
14785                                   GtkTreePath       *path,
14786                                   GtkCellEditable   *cell_editable,
14787                                   GdkRectangle      *cell_area,
14788                                   GdkEvent          *event,
14789                                   guint              flags)
14790 {
14791   gint pre_val = tree_view->priv->vadjustment->value;
14792   GtkRequisition requisition;
14793
14794   tree_view->priv->edited_column = column;
14795   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14796
14797   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14798   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14799
14800   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14801
14802   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14803
14804   if (requisition.height < cell_area->height)
14805     {
14806       gint diff = cell_area->height - requisition.height;
14807       gtk_tree_view_put (tree_view,
14808                          GTK_WIDGET (cell_editable),
14809                          cell_area->x, cell_area->y + diff/2,
14810                          cell_area->width, requisition.height);
14811     }
14812   else
14813     {
14814       gtk_tree_view_put (tree_view,
14815                          GTK_WIDGET (cell_editable),
14816                          cell_area->x, cell_area->y,
14817                          cell_area->width, cell_area->height);
14818     }
14819
14820   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14821                                    (GdkEvent *)event);
14822
14823   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14824   g_signal_connect (cell_editable, "remove-widget",
14825                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14826 }
14827
14828 static void
14829 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14830                             gboolean     cancel_editing)
14831 {
14832   GtkTreeViewColumn *column;
14833   GtkCellRenderer *cell;
14834
14835   if (tree_view->priv->edited_column == NULL)
14836     return;
14837
14838   /*
14839    * This is very evil. We need to do this, because
14840    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14841    * later on. If gtk_tree_view_row_changed notices
14842    * tree_view->priv->edited_column != NULL, it'll call
14843    * gtk_tree_view_stop_editing again. Bad things will happen then.
14844    *
14845    * Please read that again if you intend to modify anything here.
14846    */
14847
14848   column = tree_view->priv->edited_column;
14849   tree_view->priv->edited_column = NULL;
14850
14851   cell = _gtk_tree_view_column_get_edited_cell (column);
14852   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14853
14854   if (!cancel_editing)
14855     gtk_cell_editable_editing_done (column->editable_widget);
14856
14857   tree_view->priv->edited_column = column;
14858
14859   gtk_cell_editable_remove_widget (column->editable_widget);
14860 }
14861
14862
14863 /**
14864  * gtk_tree_view_set_hover_selection:
14865  * @tree_view: a #GtkTreeView
14866  * @hover: %TRUE to enable hover selection mode
14867  *
14868  * Enables of disables the hover selection mode of @tree_view.
14869  * Hover selection makes the selected row follow the pointer.
14870  * Currently, this works only for the selection modes
14871  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14872  *
14873  * Since: 2.6
14874  **/
14875 void
14876 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14877                                    gboolean     hover)
14878 {
14879   hover = hover != FALSE;
14880
14881   if (hover != tree_view->priv->hover_selection)
14882     {
14883       tree_view->priv->hover_selection = hover;
14884
14885       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14886     }
14887 }
14888
14889 /**
14890  * gtk_tree_view_get_hover_selection:
14891  * @tree_view: a #GtkTreeView
14892  *
14893  * Returns whether hover selection mode is turned on for @tree_view.
14894  *
14895  * Return value: %TRUE if @tree_view is in hover selection mode
14896  *
14897  * Since: 2.6
14898  **/
14899 gboolean
14900 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14901 {
14902   return tree_view->priv->hover_selection;
14903 }
14904
14905 /**
14906  * gtk_tree_view_set_hover_expand:
14907  * @tree_view: a #GtkTreeView
14908  * @expand: %TRUE to enable hover selection mode
14909  *
14910  * Enables of disables the hover expansion mode of @tree_view.
14911  * Hover expansion makes rows expand or collapse if the pointer
14912  * moves over them.
14913  *
14914  * Since: 2.6
14915  **/
14916 void
14917 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14918                                 gboolean     expand)
14919 {
14920   expand = expand != FALSE;
14921
14922   if (expand != tree_view->priv->hover_expand)
14923     {
14924       tree_view->priv->hover_expand = expand;
14925
14926       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14927     }
14928 }
14929
14930 /**
14931  * gtk_tree_view_get_hover_expand:
14932  * @tree_view: a #GtkTreeView
14933  *
14934  * Returns whether hover expansion mode is turned on for @tree_view.
14935  *
14936  * Return value: %TRUE if @tree_view is in hover expansion mode
14937  *
14938  * Since: 2.6
14939  **/
14940 gboolean
14941 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14942 {
14943   return tree_view->priv->hover_expand;
14944 }
14945
14946 /**
14947  * gtk_tree_view_set_rubber_banding:
14948  * @tree_view: a #GtkTreeView
14949  * @enable: %TRUE to enable rubber banding
14950  *
14951  * Enables or disables rubber banding in @tree_view.  If the selection mode
14952  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14953  * multiple rows by dragging the mouse.
14954  *
14955  * Since: 2.10
14956  **/
14957 void
14958 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14959                                   gboolean     enable)
14960 {
14961   enable = enable != FALSE;
14962
14963   if (enable != tree_view->priv->rubber_banding_enable)
14964     {
14965       tree_view->priv->rubber_banding_enable = enable;
14966
14967       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
14968     }
14969 }
14970
14971 /**
14972  * gtk_tree_view_get_rubber_banding:
14973  * @tree_view: a #GtkTreeView
14974  *
14975  * Returns whether rubber banding is turned on for @tree_view.  If the
14976  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
14977  * user to select multiple rows by dragging the mouse.
14978  *
14979  * Return value: %TRUE if rubber banding in @tree_view is enabled.
14980  *
14981  * Since: 2.10
14982  **/
14983 gboolean
14984 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
14985 {
14986   return tree_view->priv->rubber_banding_enable;
14987 }
14988
14989 /**
14990  * gtk_tree_view_is_rubber_banding_active:
14991  * @tree_view: a #GtkTreeView
14992  *
14993  * Returns whether a rubber banding operation is currently being done
14994  * in @tree_view.
14995  *
14996  * Return value: %TRUE if a rubber banding operation is currently being
14997  * done in @tree_view.
14998  *
14999  * Since: 2.12
15000  **/
15001 gboolean
15002 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
15003 {
15004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15005
15006   if (tree_view->priv->rubber_banding_enable
15007       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
15008     return TRUE;
15009
15010   return FALSE;
15011 }
15012
15013 /**
15014  * gtk_tree_view_get_row_separator_func:
15015  * @tree_view: a #GtkTreeView
15016  *
15017  * Returns the current row separator function.
15018  *
15019  * Return value: the current row separator function.
15020  *
15021  * Since: 2.6
15022  **/
15023 GtkTreeViewRowSeparatorFunc
15024 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
15025 {
15026   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
15027
15028   return tree_view->priv->row_separator_func;
15029 }
15030
15031 /**
15032  * gtk_tree_view_set_row_separator_func:
15033  * @tree_view: a #GtkTreeView
15034  * @func: a #GtkTreeViewRowSeparatorFunc
15035  * @data: (allow-none): user data to pass to @func, or %NULL
15036  * @destroy: (allow-none): destroy notifier for @data, or %NULL
15037  *
15038  * Sets the row separator function, which is used to determine
15039  * whether a row should be drawn as a separator. If the row separator
15040  * function is %NULL, no separators are drawn. This is the default value.
15041  *
15042  * Since: 2.6
15043  **/
15044 void
15045 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
15046                                       GtkTreeViewRowSeparatorFunc  func,
15047                                       gpointer                     data,
15048                                       GDestroyNotify               destroy)
15049 {
15050   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15051
15052   if (tree_view->priv->row_separator_destroy)
15053     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
15054
15055   tree_view->priv->row_separator_func = func;
15056   tree_view->priv->row_separator_data = data;
15057   tree_view->priv->row_separator_destroy = destroy;
15058
15059   /* Have the tree recalculate heights */
15060   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
15061   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
15062 }
15063
15064
15065 static void
15066 gtk_tree_view_grab_notify (GtkWidget *widget,
15067                            gboolean   was_grabbed)
15068 {
15069   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15070
15071   tree_view->priv->in_grab = !was_grabbed;
15072
15073   if (!was_grabbed)
15074     {
15075       tree_view->priv->pressed_button = -1;
15076
15077       if (tree_view->priv->rubber_band_status)
15078         gtk_tree_view_stop_rubber_band (tree_view);
15079     }
15080 }
15081
15082 static void
15083 gtk_tree_view_state_changed (GtkWidget      *widget,
15084                              GtkStateType    previous_state)
15085 {
15086   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15087
15088   if (gtk_widget_get_realized (widget))
15089     {
15090       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15091       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15092     }
15093
15094   gtk_widget_queue_draw (widget);
15095 }
15096
15097 /**
15098  * gtk_tree_view_get_grid_lines:
15099  * @tree_view: a #GtkTreeView
15100  *
15101  * Returns which grid lines are enabled in @tree_view.
15102  *
15103  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15104  * are enabled.
15105  *
15106  * Since: 2.10
15107  */
15108 GtkTreeViewGridLines
15109 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15110 {
15111   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15112
15113   return tree_view->priv->grid_lines;
15114 }
15115
15116 /**
15117  * gtk_tree_view_set_grid_lines:
15118  * @tree_view: a #GtkTreeView
15119  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15120  * enable.
15121  *
15122  * Sets which grid lines to draw in @tree_view.
15123  *
15124  * Since: 2.10
15125  */
15126 void
15127 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15128                               GtkTreeViewGridLines   grid_lines)
15129 {
15130   GtkTreeViewPrivate *priv;
15131   GtkWidget *widget;
15132   GtkTreeViewGridLines old_grid_lines;
15133
15134   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15135
15136   priv = tree_view->priv;
15137   widget = GTK_WIDGET (tree_view);
15138
15139   old_grid_lines = priv->grid_lines;
15140   priv->grid_lines = grid_lines;
15141
15142   if (gtk_widget_get_realized (widget))
15143     {
15144       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15145           priv->grid_line_gc)
15146         {
15147           g_object_unref (priv->grid_line_gc);
15148           priv->grid_line_gc = NULL;
15149         }
15150
15151       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15152           !priv->grid_line_gc)
15153         {
15154           gint line_width;
15155           gint8 *dash_list;
15156
15157           gtk_widget_style_get (widget,
15158                                 "grid-line-width", &line_width,
15159                                 "grid-line-pattern", (gchar *)&dash_list,
15160                                 NULL);
15161
15162           priv->grid_line_gc = gdk_gc_new (widget->window);
15163           gdk_gc_copy (priv->grid_line_gc, widget->style->black_gc);
15164
15165           gdk_gc_set_line_attributes (priv->grid_line_gc, line_width,
15166                                       GDK_LINE_ON_OFF_DASH,
15167                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15168           gdk_gc_set_dashes (priv->grid_line_gc, 0, dash_list, 2);
15169
15170           g_free (dash_list);
15171         }
15172     }
15173
15174   if (old_grid_lines != grid_lines)
15175     {
15176       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15177
15178       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15179     }
15180 }
15181
15182 /**
15183  * gtk_tree_view_get_enable_tree_lines:
15184  * @tree_view: a #GtkTreeView.
15185  *
15186  * Returns whether or not tree lines are drawn in @tree_view.
15187  *
15188  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15189  * otherwise.
15190  *
15191  * Since: 2.10
15192  */
15193 gboolean
15194 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15195 {
15196   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15197
15198   return tree_view->priv->tree_lines_enabled;
15199 }
15200
15201 /**
15202  * gtk_tree_view_set_enable_tree_lines:
15203  * @tree_view: a #GtkTreeView
15204  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15205  *
15206  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15207  * This does not have any visible effects for lists.
15208  *
15209  * Since: 2.10
15210  */
15211 void
15212 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15213                                      gboolean     enabled)
15214 {
15215   GtkTreeViewPrivate *priv;
15216   GtkWidget *widget;
15217   gboolean was_enabled;
15218
15219   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15220
15221   enabled = enabled != FALSE;
15222
15223   priv = tree_view->priv;
15224   widget = GTK_WIDGET (tree_view);
15225
15226   was_enabled = priv->tree_lines_enabled;
15227
15228   priv->tree_lines_enabled = enabled;
15229
15230   if (gtk_widget_get_realized (widget))
15231     {
15232       if (!enabled && priv->tree_line_gc)
15233         {
15234           g_object_unref (priv->tree_line_gc);
15235           priv->tree_line_gc = NULL;
15236         }
15237
15238       if (enabled && !priv->tree_line_gc)
15239         {
15240           gint line_width;
15241           gint8 *dash_list;
15242           gtk_widget_style_get (widget,
15243                                 "tree-line-width", &line_width,
15244                                 "tree-line-pattern", (gchar *)&dash_list,
15245                                 NULL);
15246
15247           priv->tree_line_gc = gdk_gc_new (widget->window);
15248           gdk_gc_copy (priv->tree_line_gc, widget->style->black_gc);
15249
15250           gdk_gc_set_line_attributes (priv->tree_line_gc, line_width,
15251                                       GDK_LINE_ON_OFF_DASH,
15252                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15253           gdk_gc_set_dashes (priv->tree_line_gc, 0, dash_list, 2);
15254
15255           g_free (dash_list);
15256         }
15257     }
15258
15259   if (was_enabled != enabled)
15260     {
15261       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15262
15263       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15264     }
15265 }
15266
15267
15268 /**
15269  * gtk_tree_view_set_show_expanders:
15270  * @tree_view: a #GtkTreeView
15271  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15272  *
15273  * Sets whether to draw and enable expanders and indent child rows in
15274  * @tree_view.  When disabled there will be no expanders visible in trees
15275  * and there will be no way to expand and collapse rows by default.  Also
15276  * note that hiding the expanders will disable the default indentation.  You
15277  * can set a custom indentation in this case using
15278  * gtk_tree_view_set_level_indentation().
15279  * This does not have any visible effects for lists.
15280  *
15281  * Since: 2.12
15282  */
15283 void
15284 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15285                                   gboolean     enabled)
15286 {
15287   gboolean was_enabled;
15288
15289   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15290
15291   enabled = enabled != FALSE;
15292   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15293
15294   if (enabled)
15295     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15296   else
15297     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15298
15299   if (enabled != was_enabled)
15300     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15301 }
15302
15303 /**
15304  * gtk_tree_view_get_show_expanders:
15305  * @tree_view: a #GtkTreeView.
15306  *
15307  * Returns whether or not expanders are drawn in @tree_view.
15308  *
15309  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15310  * otherwise.
15311  *
15312  * Since: 2.12
15313  */
15314 gboolean
15315 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15316 {
15317   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15318
15319   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15320 }
15321
15322 /**
15323  * gtk_tree_view_set_level_indentation:
15324  * @tree_view: a #GtkTreeView
15325  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15326  *
15327  * Sets the amount of extra indentation for child levels to use in @tree_view
15328  * in addition to the default indentation.  The value should be specified in
15329  * pixels, a value of 0 disables this feature and in this case only the default
15330  * indentation will be used.
15331  * This does not have any visible effects for lists.
15332  *
15333  * Since: 2.12
15334  */
15335 void
15336 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15337                                      gint         indentation)
15338 {
15339   tree_view->priv->level_indentation = indentation;
15340
15341   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15342 }
15343
15344 /**
15345  * gtk_tree_view_get_level_indentation:
15346  * @tree_view: a #GtkTreeView.
15347  *
15348  * Returns the amount, in pixels, of extra indentation for child levels
15349  * in @tree_view.
15350  *
15351  * Return value: the amount of extra indentation for child levels in
15352  * @tree_view.  A return value of 0 means that this feature is disabled.
15353  *
15354  * Since: 2.12
15355  */
15356 gint
15357 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15358 {
15359   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15360
15361   return tree_view->priv->level_indentation;
15362 }
15363
15364 /**
15365  * gtk_tree_view_set_tooltip_row:
15366  * @tree_view: a #GtkTreeView
15367  * @tooltip: a #GtkTooltip
15368  * @path: a #GtkTreePath
15369  *
15370  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15371  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15372  * See also gtk_tooltip_set_tip_area().
15373  *
15374  * Since: 2.12
15375  */
15376 void
15377 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15378                                GtkTooltip  *tooltip,
15379                                GtkTreePath *path)
15380 {
15381   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15382   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15383
15384   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15385 }
15386
15387 /**
15388  * gtk_tree_view_set_tooltip_cell:
15389  * @tree_view: a #GtkTreeView
15390  * @tooltip: a #GtkTooltip
15391  * @path: (allow-none): a #GtkTreePath or %NULL
15392  * @column: (allow-none): a #GtkTreeViewColumn or %NULL
15393  * @cell: (allow-none): a #GtkCellRenderer or %NULL
15394  *
15395  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15396  * in common.  For example if @path is %NULL and @column is set, the tip
15397  * area will be set to the full area covered by @column.  See also
15398  * gtk_tooltip_set_tip_area().
15399  *
15400  * Note that if @path is not specified and @cell is set and part of a column
15401  * containing the expander, the tooltip might not show and hide at the correct
15402  * position.  In such cases @path must be set to the current node under the
15403  * mouse cursor for this function to operate correctly.
15404  *
15405  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15406  *
15407  * Since: 2.12
15408  */
15409 void
15410 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15411                                 GtkTooltip        *tooltip,
15412                                 GtkTreePath       *path,
15413                                 GtkTreeViewColumn *column,
15414                                 GtkCellRenderer   *cell)
15415 {
15416   GdkRectangle rect;
15417
15418   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15419   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15420   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15421   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15422
15423   /* Determine x values. */
15424   if (column && cell)
15425     {
15426       GdkRectangle tmp;
15427       gint start, width;
15428
15429       /* We always pass in path here, whether it is NULL or not.
15430        * For cells in expander columns path must be specified so that
15431        * we can correctly account for the indentation.  This also means
15432        * that the tooltip is constrained vertically by the "Determine y
15433        * values" code below; this is not a real problem since cells actually
15434        * don't stretch vertically in constrast to columns.
15435        */
15436       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15437       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15438
15439       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15440                                                          tmp.x + start, 0,
15441                                                          &rect.x, NULL);
15442       rect.width = width;
15443     }
15444   else if (column)
15445     {
15446       GdkRectangle tmp;
15447
15448       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15449       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15450                                                          tmp.x, 0,
15451                                                          &rect.x, NULL);
15452       rect.width = tmp.width;
15453     }
15454   else
15455     {
15456       rect.x = 0;
15457       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15458     }
15459
15460   /* Determine y values. */
15461   if (path)
15462     {
15463       GdkRectangle tmp;
15464
15465       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15466       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15467                                                          0, tmp.y,
15468                                                          NULL, &rect.y);
15469       rect.height = tmp.height;
15470     }
15471   else
15472     {
15473       rect.y = 0;
15474       rect.height = tree_view->priv->vadjustment->page_size;
15475     }
15476
15477   gtk_tooltip_set_tip_area (tooltip, &rect);
15478 }
15479
15480 /**
15481  * gtk_tree_view_get_tooltip_context:
15482  * @tree_view: a #GtkTreeView
15483  * @x: the x coordinate (relative to widget coordinates)
15484  * @y: the y coordinate (relative to widget coordinates)
15485  * @keyboard_tip: whether this is a keyboard tooltip or not
15486  * @model: (allow-none): a pointer to receive a #GtkTreeModel or %NULL
15487  * @path: (allow-none): a pointer to receive a #GtkTreePath or %NULL
15488  * @iter: (allow-none): a pointer to receive a #GtkTreeIter or %NULL
15489  *
15490  * This function is supposed to be used in a #GtkWidget::query-tooltip
15491  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15492  * which are received in the signal handler, should be passed to this
15493  * function without modification.
15494  *
15495  * The return value indicates whether there is a tree view row at the given
15496  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15497  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15498  * @model, @path and @iter which have been provided will be set to point to
15499  * that row and the corresponding model.  @x and @y will always be converted
15500  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15501  *
15502  * Return value: whether or not the given tooltip context points to a row.
15503  *
15504  * Since: 2.12
15505  */
15506 gboolean
15507 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15508                                    gint          *x,
15509                                    gint          *y,
15510                                    gboolean       keyboard_tip,
15511                                    GtkTreeModel **model,
15512                                    GtkTreePath  **path,
15513                                    GtkTreeIter   *iter)
15514 {
15515   GtkTreePath *tmppath = NULL;
15516
15517   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15518   g_return_val_if_fail (x != NULL, FALSE);
15519   g_return_val_if_fail (y != NULL, FALSE);
15520
15521   if (keyboard_tip)
15522     {
15523       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15524
15525       if (!tmppath)
15526         return FALSE;
15527     }
15528   else
15529     {
15530       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15531                                                          x, y);
15532
15533       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15534                                           &tmppath, NULL, NULL, NULL))
15535         return FALSE;
15536     }
15537
15538   if (model)
15539     *model = gtk_tree_view_get_model (tree_view);
15540
15541   if (iter)
15542     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15543                              iter, tmppath);
15544
15545   if (path)
15546     *path = tmppath;
15547   else
15548     gtk_tree_path_free (tmppath);
15549
15550   return TRUE;
15551 }
15552
15553 static gboolean
15554 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15555                                     gint        x,
15556                                     gint        y,
15557                                     gboolean    keyboard_tip,
15558                                     GtkTooltip *tooltip,
15559                                     gpointer    data)
15560 {
15561   GValue value = { 0, };
15562   GValue transformed = { 0, };
15563   GtkTreeIter iter;
15564   GtkTreePath *path;
15565   GtkTreeModel *model;
15566   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15567
15568   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15569                                           &x, &y,
15570                                           keyboard_tip,
15571                                           &model, &path, &iter))
15572     return FALSE;
15573
15574   gtk_tree_model_get_value (model, &iter,
15575                             tree_view->priv->tooltip_column, &value);
15576
15577   g_value_init (&transformed, G_TYPE_STRING);
15578
15579   if (!g_value_transform (&value, &transformed))
15580     {
15581       g_value_unset (&value);
15582       gtk_tree_path_free (path);
15583
15584       return FALSE;
15585     }
15586
15587   g_value_unset (&value);
15588
15589   if (!g_value_get_string (&transformed))
15590     {
15591       g_value_unset (&transformed);
15592       gtk_tree_path_free (path);
15593
15594       return FALSE;
15595     }
15596
15597   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15598   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15599
15600   gtk_tree_path_free (path);
15601   g_value_unset (&transformed);
15602
15603   return TRUE;
15604 }
15605
15606 /**
15607  * gtk_tree_view_set_tooltip_column:
15608  * @tree_view: a #GtkTreeView
15609  * @column: an integer, which is a valid column number for @tree_view's model
15610  *
15611  * If you only plan to have simple (text-only) tooltips on full rows, you
15612  * can use this function to have #GtkTreeView handle these automatically
15613  * for you. @column should be set to the column in @tree_view's model
15614  * containing the tooltip texts, or -1 to disable this feature.
15615  *
15616  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15617  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15618  *
15619  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15620  * so &amp;, &lt;, etc have to be escaped in the text.
15621  *
15622  * Since: 2.12
15623  */
15624 void
15625 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15626                                   gint         column)
15627 {
15628   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15629
15630   if (column == tree_view->priv->tooltip_column)
15631     return;
15632
15633   if (column == -1)
15634     {
15635       g_signal_handlers_disconnect_by_func (tree_view,
15636                                             gtk_tree_view_set_tooltip_query_cb,
15637                                             NULL);
15638       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15639     }
15640   else
15641     {
15642       if (tree_view->priv->tooltip_column == -1)
15643         {
15644           g_signal_connect (tree_view, "query-tooltip",
15645                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15646           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15647         }
15648     }
15649
15650   tree_view->priv->tooltip_column = column;
15651   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15652 }
15653
15654 /**
15655  * gtk_tree_view_get_tooltip_column:
15656  * @tree_view: a #GtkTreeView
15657  *
15658  * Returns the column of @tree_view's model which is being used for
15659  * displaying tooltips on @tree_view's rows.
15660  *
15661  * Return value: the index of the tooltip column that is currently being
15662  * used, or -1 if this is disabled.
15663  *
15664  * Since: 2.12
15665  */
15666 gint
15667 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15668 {
15669   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15670
15671   return tree_view->priv->tooltip_column;
15672 }
15673
15674 #define __GTK_TREE_VIEW_C__
15675 #include "gtkaliasdef.c"