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 "gtkbutton.h"
  33 #include "gtkalignment.h"
  34 #include "gtklabel.h"
  35 #include "gtkhbox.h"
  36 #include "gtkarrow.h"
  37 #include "gtkintl.h"
  38 #include "gtkbindings.h"
  39 #include "gtkcontainer.h"
  40 #include "gtkentry.h"
  41 #include "gtktreemodelsort.h"
  42
  43 #define GTK_TREE_VIEW_SEARCH_DIALOG_KEY "gtk-tree-view-search-dialog"
  44
  45 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  46 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  47 #define GTK_TREE_VIEW_NUM_ROWS_PER_IDLE 500
  48 #define SCROLL_EDGE_SIZE 15
  49 #define EXPANDER_EXTRA_PADDING 4
  50
  51 /* The "background" areas of all rows/cells add up to cover the entire tree.
  52  * The background includes all inter-row and inter-cell spacing.
  53  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  54  * i.e. just the cells, no spacing.
  55  */
  56
  57 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  58 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  59
  60 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  61 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  62
  63 /* This is in Window coordinates */
  64 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  65 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  66
  67
  68 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  69 struct _GtkTreeViewChild
  70 {
  71   GtkWidget *widget;
  72   gint x;
  73   gint y;
  74   gint width;
  75   gint height;
  76 };
  77
  78
  79 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  80 struct _TreeViewDragInfo
  81 {
  82   GdkModifierType start_button_mask;
  83   GtkTargetList *source_target_list;
  84   GdkDragAction source_actions;
  85
  86   GtkTargetList *dest_target_list;
  87
  88   guint source_set : 1;
  89   guint dest_set : 1;
  90 };
  91
  92
  93 /* Signals */
  94 enum
  95 {
  96   ROW_ACTIVATED,
  97   TEST_EXPAND_ROW,
  98   TEST_COLLAPSE_ROW,
  99   ROW_EXPANDED,
 100   ROW_COLLAPSED,
 101   COLUMNS_CHANGED,
 102   CURSOR_CHANGED,
 103   MOVE_CURSOR,
 104   SELECT_ALL,
 105   UNSELECT_ALL,
 106   SELECT_CURSOR_ROW,
 107   TOGGLE_CURSOR_ROW,
 108   EXPAND_COLLAPSE_CURSOR_ROW,
 109   SELECT_CURSOR_PARENT,
 110   START_INTERACTIVE_SEARCH,
 111   LAST_SIGNAL
 112 };
 113
 114 /* Properties */
 115 enum {
 116   PROP_0,
 117   PROP_MODEL,
 118   PROP_HADJUSTMENT,
 119   PROP_VADJUSTMENT,
 120   PROP_HEADERS_VISIBLE,
 121   PROP_HEADERS_CLICKABLE,
 122   PROP_EXPANDER_COLUMN,
 123   PROP_REORDERABLE,
 124   PROP_RULES_HINT,
 125   PROP_ENABLE_SEARCH,
 126   PROP_SEARCH_COLUMN,
 127   PROP_FIXED_HEIGHT_MODE
 128 };
 129
 130 static void     gtk_tree_view_class_init           (GtkTreeViewClass *klass);
 131 static void     gtk_tree_view_init                 (GtkTreeView      *tree_view);
 132
 133 /* object signals */
 134 static void     gtk_tree_view_finalize             (GObject          *object);
 135 static void     gtk_tree_view_set_property         (GObject         *object,
 136                                                     guint            prop_id,
 137                                                     const GValue    *value,
 138                                                     GParamSpec      *pspec);
 139 static void     gtk_tree_view_get_property         (GObject         *object,
 140                                                     guint            prop_id,
 141                                                     GValue          *value,
 142                                                     GParamSpec      *pspec);
 143
 144 /* gtkobject signals */
 145 static void     gtk_tree_view_destroy              (GtkObject        *object);
 146
 147 /* gtkwidget signals */
 148 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 149 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 150 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 151 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 152                                                     GtkRequisition   *requisition);
 153 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 154                                                     GtkAllocation    *allocation);
 155 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 156                                                     GdkEventExpose   *event);
 157 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 158                                                     GdkEventKey      *event);
 159 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 160                                                     GdkEventMotion   *event);
 161 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 162                                                     GdkEventCrossing *event);
 163 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 164                                                     GdkEventCrossing *event);
 165 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 166                                                     GdkEventButton   *event);
 167 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 168                                                     GdkEventButton   *event);
 169 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 170                                                     GtkWidget        *child);
 171 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 172                                                     GdkEventFocus    *event);
 173 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 174                                                     GtkDirectionType  direction);
 175 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 176 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 177                                                     GtkStyle         *previous_style);
 178
 179 /* container signals */
 180 static void     gtk_tree_view_remove               (GtkContainer     *container,
 181                                                     GtkWidget        *widget);
 182 static void     gtk_tree_view_forall               (GtkContainer     *container,
 183                                                     gboolean          include_internals,
 184                                                     GtkCallback       callback,
 185                                                     gpointer          callback_data);
 186
 187 /* Source side drag signals */
 188 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 189                                             GdkDragContext   *context);
 190 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 191                                             GdkDragContext   *context);
 192 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 193                                             GdkDragContext   *context,
 194                                             GtkSelectionData *selection_data,
 195                                             guint             info,
 196                                             guint             time);
 197 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 198                                             GdkDragContext   *context);
 199
 200 /* Target side drag signals */
 201 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 202                                                   GdkDragContext   *context,
 203                                                   guint             time);
 204 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 205                                                   GdkDragContext   *context,
 206                                                   gint              x,
 207                                                   gint              y,
 208                                                   guint             time);
 209 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 210                                                   GdkDragContext   *context,
 211                                                   gint              x,
 212                                                   gint              y,
 213                                                   guint             time);
 214 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 215                                                   GdkDragContext   *context,
 216                                                   gint              x,
 217                                                   gint              y,
 218                                                   GtkSelectionData *selection_data,
 219                                                   guint             info,
 220                                                   guint             time);
 221
 222 /* tree_model signals */
 223 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 224                                                            GtkAdjustment   *hadj,
 225                                                            GtkAdjustment   *vadj);
 226 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 227                                                            GtkMovementStep  step,
 228                                                            gint             count);
 229 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 230 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 231 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 232                                                            gboolean         start_editing);
 233 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 234 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 235                                                                gboolean         logical,
 236                                                                gboolean         expand,
 237                                                                gboolean         open_all);
 238 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 239 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 240                                                            GtkTreePath     *path,
 241                                                            GtkTreeIter     *iter,
 242                                                            gpointer         data);
 243 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 244                                                            GtkTreePath     *path,
 245                                                            GtkTreeIter     *iter,
 246                                                            gpointer         data);
 247 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 248                                                            GtkTreePath     *path,
 249                                                            GtkTreeIter     *iter,
 250                                                            gpointer         data);
 251 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 252                                                            GtkTreePath     *path,
 253                                                            gpointer         data);
 254 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 255                                                            GtkTreePath     *parent,
 256                                                            GtkTreeIter     *iter,
 257                                                            gint            *new_order,
 258                                                            gpointer         data);
 259
 260 /* Incremental reflow */
 261 static gboolean validate_row             (GtkTreeView *tree_view,
 262                                           GtkRBTree   *tree,
 263                                           GtkRBNode   *node,
 264                                           GtkTreeIter *iter,
 265                                           GtkTreePath *path);
 266 static void     validate_visible_area    (GtkTreeView *tree_view);
 267 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 268 static gboolean validate_rows            (GtkTreeView *tree_view);
 269 static gboolean presize_handler_callback (gpointer     data);
 270 static void     install_presize_handler  (GtkTreeView *tree_view);
 271 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 272 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 273 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 274
 275
 276 /* Internal functions */
 277 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView       *tree_view,
 278                                                               GtkTreeViewColumn *column);
 279 static void     gtk_tree_view_add_move_binding               (GtkBindingSet     *binding_set,
 280                                                               guint              keyval,
 281                                                               guint              modmask,
 282                                                               GtkMovementStep    step,
 283                                                               gint               count);
 284 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView       *tree_view,
 285                                                               GtkRBTree         *tree);
 286 static void     gtk_tree_view_queue_draw_path                (GtkTreeView       *tree_view,
 287                                                               GtkTreePath       *path,
 288                                                               GdkRectangle      *clip_rect);
 289 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView       *tree_view,
 290                                                               GtkRBTree         *tree,
 291                                                               GtkRBNode         *node,
 292                                                               GdkRectangle      *clip_rect);
 293 static void     gtk_tree_view_draw_arrow                     (GtkTreeView       *tree_view,
 294                                                               GtkRBTree         *tree,
 295                                                               GtkRBNode         *node,
 296                                                               gint               x,
 297                                                               gint               y);
 298 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView       *tree_view,
 299                                                               GtkRBTree         *tree,
 300                                                               gint              *x1,
 301                                                               gint              *x2);
 302 static gint     gtk_tree_view_new_column_width               (GtkTreeView       *tree_view,
 303                                                               gint               i,
 304                                                               gint              *x);
 305 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment     *adjustment,
 306                                                               GtkTreeView       *tree_view);
 307 static void     gtk_tree_view_build_tree                     (GtkTreeView       *tree_view,
 308                                                               GtkRBTree         *tree,
 309                                                               GtkTreeIter       *iter,
 310                                                               gint               depth,
 311                                                               gboolean           recurse);
 312 static gboolean gtk_tree_view_discover_dirty_iter            (GtkTreeView       *tree_view,
 313                                                               GtkTreeIter       *iter,
 314                                                               gint               depth,
 315                                                               gint              *height,
 316                                                               GtkRBNode         *node);
 317 static void     gtk_tree_view_discover_dirty                 (GtkTreeView       *tree_view,
 318                                                               GtkRBTree         *tree,
 319                                                               GtkTreeIter       *iter,
 320                                                               gint               depth);
 321 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView       *tree_view,
 322                                                               GtkRBTree         *tree,
 323                                                               GtkRBNode         *node);
 324 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView       *tree_view,
 325                                                               GtkTreeViewColumn *column);
 326 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView       *tree_view,
 327                                                               GdkEventMotion    *event);
 328 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView       *tree_view);
 329 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView       *tree_view,
 330                                                               gint               count);
 331 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView       *tree_view,
 332                                                               gint               count);
 333 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView       *tree_view,
 334                                                               gint               count);
 335 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView       *tree_view,
 336                                                               gint               count);
 337 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView       *tree_view,
 338                                                               GtkTreePath       *path,
 339                                                               GtkRBTree         *tree,
 340                                                               GtkRBNode         *node,
 341                                                               gboolean           animate);
 342 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView       *tree_view,
 343                                                               GtkTreePath       *path,
 344                                                               GtkRBTree         *tree,
 345                                                               GtkRBNode         *node,
 346                                                               gboolean           open_all,
 347                                                               gboolean           animate);
 348 static void     gtk_tree_view_real_set_cursor                (GtkTreeView       *tree_view,
 349                                                               GtkTreePath       *path,
 350                                                               gboolean           clear_and_select,
 351                                                               gboolean           clamp_node);
 352 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView       *tree_view);
 353 static void     column_sizing_notify                         (GObject           *object,
 354                                                               GParamSpec        *pspec,
 355                                                               gpointer           data);
 356 static void     gtk_tree_view_set_fixed_height_mode          (GtkTreeView       *tree_view,
 357                                                               gboolean           enable);
 358
 359 static gboolean expand_collapse_timeout                      (gpointer           data);
 360 static gboolean do_expand_collapse                           (GtkTreeView       *tree_view);
 361
 362 /* interactive search */
 363 static void     gtk_tree_view_search_dialog_destroy     (GtkWidget        *search_dialog,
 364                                                          GtkTreeView      *tree_view);
 365 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 366                                                          GtkWidget        *search_dialog);
 367 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 368                                                          GtkMenu          *menu,
 369                                                          gpointer          data);
 370 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 371 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 372                                                          gpointer          data);
 373 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 374                                                          GdkEventAny      *event,
 375                                                          GtkTreeView      *tree_view);
 376 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 377                                                          GdkEventButton   *event,
 378                                                          GtkTreeView      *tree_view);
 379 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 380                                                          GdkEventKey      *event,
 381                                                          GtkTreeView      *tree_view);
 382 static void     gtk_tree_view_search_move               (GtkWidget        *window,
 383                                                          GtkTreeView      *tree_view,
 384                                                          gboolean          up);
 385 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 386                                                          gint              column,
 387                                                          const gchar      *key,
 388                                                          GtkTreeIter      *iter,
 389                                                          gpointer          search_data);
 390 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 391                                                          GtkTreeSelection *selection,
 392                                                          GtkTreeIter      *iter,
 393                                                          const gchar      *text,
 394                                                          gint             *count,
 395                                                          gint              n);
 396 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 397                                                          GtkTreeView      *tree_view);
 398 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 399                                                          GtkWidget        *child_widget,
 400                                                          gint              x,
 401                                                          gint              y,
 402                                                          gint              width,
 403                                                          gint              height);
 404 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 405                                                          GtkTreePath      *cursor_path);
 406 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 407                                               GtkTreeViewColumn *column,
 408                                               GtkTreePath       *path,
 409                                               GtkCellEditable   *cell_editable,
 410                                               GdkRectangle      *cell_area,
 411                                               GdkEvent          *event,
 412                                               guint              flags);
 413 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 414                                                          gboolean     cancel_editing);
 415 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view);
 416 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 417                                                          GtkTreeViewColumn *column,
 418                                                          gint               drop_position);
 419
 420
 421 static GtkContainerClass *parent_class = NULL;
 422 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 423
 424 \f
 425
 426 /* GType Methods
 427  */
 428
 429 GType
 430 gtk_tree_view_get_type (void)
 431 {
 432   static GType tree_view_type = 0;
 433
 434   if (!tree_view_type)
 435     {
 436       static const GTypeInfo tree_view_info =
 437       {
 438         sizeof (GtkTreeViewClass),
 439         NULL,           /* base_init */
 440         NULL,           /* base_finalize */
 441         (GClassInitFunc) gtk_tree_view_class_init,
 442         NULL,           /* class_finalize */
 443         NULL,           /* class_data */
 444         sizeof (GtkTreeView),
 445         0,              /* n_preallocs */
 446         (GInstanceInitFunc) gtk_tree_view_init
 447       };
 448
 449       tree_view_type =
 450         g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView",
 451                                 &tree_view_info, 0);
 452     }
 453
 454   return tree_view_type;
 455 }
 456
 457 static void
 458 gtk_tree_view_class_init (GtkTreeViewClass *class)
 459 {
 460   GObjectClass *o_class;
 461   GtkObjectClass *object_class;
 462   GtkWidgetClass *widget_class;
 463   GtkContainerClass *container_class;
 464   GtkBindingSet *binding_set;
 465
 466   parent_class = g_type_class_peek_parent (class);
 467   binding_set = gtk_binding_set_by_class (class);
 468
 469   o_class = (GObjectClass *) class;
 470   object_class = (GtkObjectClass *) class;
 471   widget_class = (GtkWidgetClass *) class;
 472   container_class = (GtkContainerClass *) class;
 473
 474   /* GObject signals */
 475   o_class->set_property = gtk_tree_view_set_property;
 476   o_class->get_property = gtk_tree_view_get_property;
 477   o_class->finalize = gtk_tree_view_finalize;
 478
 479   /* GtkObject signals */
 480   object_class->destroy = gtk_tree_view_destroy;
 481
 482   /* GtkWidget signals */
 483   widget_class->map = gtk_tree_view_map;
 484   widget_class->realize = gtk_tree_view_realize;
 485   widget_class->unrealize = gtk_tree_view_unrealize;
 486   widget_class->size_request = gtk_tree_view_size_request;
 487   widget_class->size_allocate = gtk_tree_view_size_allocate;
 488   widget_class->button_press_event = gtk_tree_view_button_press;
 489   widget_class->button_release_event = gtk_tree_view_button_release;
 490   widget_class->motion_notify_event = gtk_tree_view_motion;
 491   widget_class->expose_event = gtk_tree_view_expose;
 492   widget_class->key_press_event = gtk_tree_view_key_press;
 493   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 494   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 495   widget_class->focus_out_event = gtk_tree_view_focus_out;
 496   widget_class->drag_begin = gtk_tree_view_drag_begin;
 497   widget_class->drag_end = gtk_tree_view_drag_end;
 498   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 499   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 500   widget_class->drag_leave = gtk_tree_view_drag_leave;
 501   widget_class->drag_motion = gtk_tree_view_drag_motion;
 502   widget_class->drag_drop = gtk_tree_view_drag_drop;
 503   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 504   widget_class->focus = gtk_tree_view_focus;
 505   widget_class->grab_focus = gtk_tree_view_grab_focus;
 506   widget_class->style_set = gtk_tree_view_style_set;
 507
 508   /* GtkContainer signals */
 509   container_class->remove = gtk_tree_view_remove;
 510   container_class->forall = gtk_tree_view_forall;
 511   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 512
 513   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 514   class->move_cursor = gtk_tree_view_real_move_cursor;
 515   class->select_all = gtk_tree_view_real_select_all;
 516   class->unselect_all = gtk_tree_view_real_unselect_all;
 517   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 518   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 519   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 520   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 521   class->start_interactive_search = gtk_tree_view_real_start_interactive_search;
 522
 523   /* Properties */
 524
 525   g_object_class_install_property (o_class,
 526                                    PROP_MODEL,
 527                                    g_param_spec_object ("model",
 528                                                         P_("TreeView Model"),
 529                                                         P_("The model for the tree view"),
 530                                                         GTK_TYPE_TREE_MODEL,
 531                                                         G_PARAM_READWRITE));
 532
 533   g_object_class_install_property (o_class,
 534                                    PROP_HADJUSTMENT,
 535                                    g_param_spec_object ("hadjustment",
 536                                                         P_("Horizontal Adjustment"),
 537                                                         P_("Horizontal Adjustment for the widget"),
 538                                                         GTK_TYPE_ADJUSTMENT,
 539                                                         G_PARAM_READWRITE));
 540
 541   g_object_class_install_property (o_class,
 542                                    PROP_VADJUSTMENT,
 543                                    g_param_spec_object ("vadjustment",
 544                                                         P_("Vertical Adjustment"),
 545                                                         P_("Vertical Adjustment for the widget"),
 546                                                         GTK_TYPE_ADJUSTMENT,
 547                                                         G_PARAM_READWRITE));
 548
 549   g_object_class_install_property (o_class,
 550                                    PROP_HEADERS_VISIBLE,
 551                                    g_param_spec_boolean ("headers_visible",
 552                                                          P_("Visible"),
 553                                                          P_("Show the column header buttons"),
 554                                                          TRUE,
 555                                                          G_PARAM_READWRITE));
 556
 557   g_object_class_install_property (o_class,
 558                                    PROP_HEADERS_CLICKABLE,
 559                                    g_param_spec_boolean ("headers_clickable",
 560                                                          P_("Headers Clickable"),
 561                                                          P_("Column headers respond to click events"),
 562                                                          FALSE,
 563                                                          G_PARAM_WRITABLE));
 564
 565   g_object_class_install_property (o_class,
 566                                    PROP_EXPANDER_COLUMN,
 567                                    g_param_spec_object ("expander_column",
 568                                                         P_("Expander Column"),
 569                                                         P_("Set the column for the expander column"),
 570                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 571                                                         G_PARAM_READWRITE));
 572
 573   g_object_class_install_property (o_class,
 574                                    PROP_REORDERABLE,
 575                                    g_param_spec_boolean ("reorderable",
 576                                                          P_("Reorderable"),
 577                                                          P_("View is reorderable"),
 578                                                          FALSE,
 579                                                          G_PARAM_READWRITE));
 580
 581   g_object_class_install_property (o_class,
 582                                    PROP_RULES_HINT,
 583                                    g_param_spec_boolean ("rules_hint",
 584                                                          P_("Rules Hint"),
 585                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 586                                                          FALSE,
 587                                                          G_PARAM_READWRITE));
 588
 589     g_object_class_install_property (o_class,
 590                                      PROP_ENABLE_SEARCH,
 591                                      g_param_spec_boolean ("enable_search",
 592                                                            P_("Enable Search"),
 593                                                            P_("View allows user to search through columns interactively"),
 594                                                            TRUE,
 595                                                            G_PARAM_READWRITE));
 596
 597     g_object_class_install_property (o_class,
 598                                      PROP_SEARCH_COLUMN,
 599                                      g_param_spec_int ("search_column",
 600                                                        P_("Search Column"),
 601                                                        P_("Model column to search through when searching through code"),
 602                                                        -1,
 603                                                        G_MAXINT,
 604                                                        0,
 605                                                        G_PARAM_READWRITE));
 606
 607     g_object_class_install_property (o_class,
 608                                      PROP_FIXED_HEIGHT_MODE,
 609                                      g_param_spec_boolean ("fixed_height_mode",
 610                                                            P_("Fixed Height Mode"),
 611                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 612                                                            FALSE,
 613                                                            G_PARAM_READWRITE));
 614
 615   /* Style properties */
 616 #define _TREE_VIEW_EXPANDER_SIZE 10
 617 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 618 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 619
 620   gtk_widget_class_install_style_property (widget_class,
 621                                            g_param_spec_int ("expander_size",
 622                                                              P_("Expander Size"),
 623                                                              P_("Size of the expander arrow"),
 624                                                              0,
 625                                                              G_MAXINT,
 626                                                              _TREE_VIEW_EXPANDER_SIZE,
 627                                                              G_PARAM_READABLE));
 628
 629   gtk_widget_class_install_style_property (widget_class,
 630                                            g_param_spec_int ("vertical_separator",
 631                                                              P_("Vertical Separator Width"),
 632                                                              P_("Vertical space between cells.  Must be an even number"),
 633                                                              0,
 634                                                              G_MAXINT,
 635                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 636                                                              G_PARAM_READABLE));
 637
 638   gtk_widget_class_install_style_property (widget_class,
 639                                            g_param_spec_int ("horizontal_separator",
 640                                                              P_("Horizontal Separator Width"),
 641                                                              P_("Horizontal space between cells.  Must be an even number"),
 642                                                              0,
 643                                                              G_MAXINT,
 644                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 645                                                              G_PARAM_READABLE));
 646
 647   gtk_widget_class_install_style_property (widget_class,
 648                                            g_param_spec_boolean ("allow_rules",
 649                                                                  P_("Allow Rules"),
 650                                                                  P_("Allow drawing of alternating color rows"),
 651                                                                  TRUE,
 652                                                                  G_PARAM_READABLE));
 653
 654   gtk_widget_class_install_style_property (widget_class,
 655                                            g_param_spec_boolean ("indent_expanders",
 656                                                                  P_("Indent Expanders"),
 657                                                                  P_("Make the expanders indented"),
 658                                                                  TRUE,
 659                                                                  G_PARAM_READABLE));
 660
 661   gtk_widget_class_install_style_property (widget_class,
 662                                            g_param_spec_boxed ("even_row_color",
 663                                                                P_("Even Row Color"),
 664                                                                P_("Color to use for even rows"),
 665                                                                GDK_TYPE_COLOR,
 666 G_PARAM_READABLE));
 667
 668   gtk_widget_class_install_style_property (widget_class,
 669                                            g_param_spec_boxed ("odd_row_color",
 670                                                                P_("Odd Row Color"),
 671                                                                P_("Color to use for odd rows"),
 672                                                                GDK_TYPE_COLOR,
 673 G_PARAM_READABLE));
 674
 675   /* Signals */
 676   widget_class->set_scroll_adjustments_signal =
 677     g_signal_new ("set_scroll_adjustments",
 678                   G_TYPE_FROM_CLASS (o_class),
 679                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 680                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 681                   NULL, NULL,
 682                   _gtk_marshal_VOID__OBJECT_OBJECT,
 683                   G_TYPE_NONE, 2,
 684                   GTK_TYPE_ADJUSTMENT,
 685                   GTK_TYPE_ADJUSTMENT);
 686
 687   tree_view_signals[ROW_ACTIVATED] =
 688     g_signal_new ("row_activated",
 689                   G_TYPE_FROM_CLASS (o_class),
 690                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 691                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 692                   NULL, NULL,
 693                   _gtk_marshal_VOID__BOXED_OBJECT,
 694                   G_TYPE_NONE, 2,
 695                   GTK_TYPE_TREE_PATH,
 696                   GTK_TYPE_TREE_VIEW_COLUMN);
 697
 698   tree_view_signals[TEST_EXPAND_ROW] =
 699     g_signal_new ("test_expand_row",
 700                   G_TYPE_FROM_CLASS (o_class),
 701                   G_SIGNAL_RUN_LAST,
 702                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 703                   _gtk_boolean_handled_accumulator, NULL,
 704                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 705                   G_TYPE_BOOLEAN, 2,
 706                   GTK_TYPE_TREE_ITER,
 707                   GTK_TYPE_TREE_PATH);
 708
 709   tree_view_signals[TEST_COLLAPSE_ROW] =
 710     g_signal_new ("test_collapse_row",
 711                   G_TYPE_FROM_CLASS (o_class),
 712                   G_SIGNAL_RUN_LAST,
 713                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 714                   _gtk_boolean_handled_accumulator, NULL,
 715                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 716                   G_TYPE_BOOLEAN, 2,
 717                   GTK_TYPE_TREE_ITER,
 718                   GTK_TYPE_TREE_PATH);
 719
 720   tree_view_signals[ROW_EXPANDED] =
 721     g_signal_new ("row_expanded",
 722                   G_TYPE_FROM_CLASS (o_class),
 723                   G_SIGNAL_RUN_LAST,
 724                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 725                   NULL, NULL,
 726                   _gtk_marshal_VOID__BOXED_BOXED,
 727                   G_TYPE_NONE, 2,
 728                   GTK_TYPE_TREE_ITER,
 729                   GTK_TYPE_TREE_PATH);
 730
 731   tree_view_signals[ROW_COLLAPSED] =
 732     g_signal_new ("row_collapsed",
 733                   G_TYPE_FROM_CLASS (o_class),
 734                   G_SIGNAL_RUN_LAST,
 735                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 736                   NULL, NULL,
 737                   _gtk_marshal_VOID__BOXED_BOXED,
 738                   G_TYPE_NONE, 2,
 739                   GTK_TYPE_TREE_ITER,
 740                   GTK_TYPE_TREE_PATH);
 741
 742   tree_view_signals[COLUMNS_CHANGED] =
 743     g_signal_new ("columns_changed",
 744                   G_TYPE_FROM_CLASS (o_class),
 745                   G_SIGNAL_RUN_LAST,
 746                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 747                   NULL, NULL,
 748                   _gtk_marshal_NONE__NONE,
 749                   G_TYPE_NONE, 0);
 750
 751   tree_view_signals[CURSOR_CHANGED] =
 752     g_signal_new ("cursor_changed",
 753                   G_TYPE_FROM_CLASS (o_class),
 754                   G_SIGNAL_RUN_LAST,
 755                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 756                   NULL, NULL,
 757                   _gtk_marshal_NONE__NONE,
 758                   G_TYPE_NONE, 0);
 759
 760   tree_view_signals[MOVE_CURSOR] =
 761     g_signal_new ("move_cursor",
 762                   G_TYPE_FROM_CLASS (object_class),
 763                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 764                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 765                   NULL, NULL,
 766                   _gtk_marshal_BOOLEAN__ENUM_INT,
 767                   G_TYPE_BOOLEAN, 2,
 768                   GTK_TYPE_MOVEMENT_STEP,
 769                   G_TYPE_INT);
 770
 771   tree_view_signals[SELECT_ALL] =
 772     g_signal_new ("select_all",
 773                   G_TYPE_FROM_CLASS (object_class),
 774                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 775                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
 776                   NULL, NULL,
 777                   _gtk_marshal_BOOLEAN__NONE,
 778                   G_TYPE_BOOLEAN, 0);
 779
 780   tree_view_signals[UNSELECT_ALL] =
 781     g_signal_new ("unselect_all",
 782                   G_TYPE_FROM_CLASS (object_class),
 783                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 784                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
 785                   NULL, NULL,
 786                   _gtk_marshal_BOOLEAN__NONE,
 787                   G_TYPE_BOOLEAN, 0);
 788
 789   tree_view_signals[SELECT_CURSOR_ROW] =
 790     g_signal_new ("select_cursor_row",
 791                   G_TYPE_FROM_CLASS (object_class),
 792                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 793                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
 794                   NULL, NULL,
 795                   _gtk_marshal_BOOLEAN__BOOLEAN,
 796                   G_TYPE_BOOLEAN, 1,
 797                   G_TYPE_BOOLEAN);
 798
 799   tree_view_signals[TOGGLE_CURSOR_ROW] =
 800     g_signal_new ("toggle_cursor_row",
 801                   G_TYPE_FROM_CLASS (object_class),
 802                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 803                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
 804                   NULL, NULL,
 805                   _gtk_marshal_BOOLEAN__NONE,
 806                   G_TYPE_BOOLEAN, 0);
 807
 808   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
 809     g_signal_new ("expand_collapse_cursor_row",
 810                   G_TYPE_FROM_CLASS (object_class),
 811                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 812                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
 813                   NULL, NULL,
 814                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
 815                   G_TYPE_BOOLEAN, 3,
 816                   G_TYPE_BOOLEAN,
 817                   G_TYPE_BOOLEAN,
 818                   G_TYPE_BOOLEAN);
 819
 820   tree_view_signals[SELECT_CURSOR_PARENT] =
 821     g_signal_new ("select_cursor_parent",
 822                   G_TYPE_FROM_CLASS (object_class),
 823                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 824                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
 825                   NULL, NULL,
 826                   _gtk_marshal_BOOLEAN__NONE,
 827                   G_TYPE_BOOLEAN, 0);
 828
 829   tree_view_signals[START_INTERACTIVE_SEARCH] =
 830     g_signal_new ("start_interactive_search",
 831                   G_TYPE_FROM_CLASS (object_class),
 832                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 833                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
 834                   NULL, NULL,
 835                   _gtk_marshal_BOOLEAN__NONE,
 836                   G_TYPE_BOOLEAN, 0);
 837
 838   /* Key bindings */
 839   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0,
 840                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 841   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0,
 842                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 843
 844   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0,
 845                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 846   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0,
 847                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 848
 849   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
 850                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 851
 852   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
 853                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 854
 855   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0,
 856                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 857   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0,
 858                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 859
 860   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0,
 861                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 862   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0,
 863                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 864
 865   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0,
 866                                   GTK_MOVEMENT_PAGES, -1);
 867   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0,
 868                                   GTK_MOVEMENT_PAGES, -1);
 869
 870   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0,
 871                                   GTK_MOVEMENT_PAGES, 1);
 872   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0,
 873                                   GTK_MOVEMENT_PAGES, 1);
 874
 875
 876   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move_cursor", 2,
 877                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 878                                 G_TYPE_INT, 1);
 879
 880   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move_cursor", 2,
 881                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 882                                 G_TYPE_INT, -1);
 883
 884   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move_cursor", 2,
 885                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 886                                 G_TYPE_INT, 1);
 887
 888   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move_cursor", 2,
 889                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 890                                 G_TYPE_INT, -1);
 891
 892   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
 893                                 "move_cursor", 2,
 894                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 895                                 G_TYPE_INT, 1);
 896
 897   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
 898                                 "move_cursor", 2,
 899                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 900                                 G_TYPE_INT, -1);
 901
 902   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
 903                                 "move_cursor", 2,
 904                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 905                                 G_TYPE_INT, 1);
 906
 907   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
 908                                 "move_cursor", 2,
 909                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 910                                 G_TYPE_INT, -1);
 911
 912   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle_cursor_row", 0);
 913
 914   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select_all", 0);
 915   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select_all", 0);
 916
 917   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect_all", 0);
 918   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect_all", 0);
 919
 920   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select_cursor_row", 1,
 921                                 G_TYPE_BOOLEAN, TRUE);
 922
 923   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select_cursor_row", 1,
 924                                 G_TYPE_BOOLEAN, TRUE);
 925   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select_cursor_row", 1,
 926                                 G_TYPE_BOOLEAN, TRUE);
 927   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select_cursor_row", 1,
 928                                 G_TYPE_BOOLEAN, TRUE);
 929   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select_cursor_row", 1,
 930                                 G_TYPE_BOOLEAN, TRUE);
 931
 932   /* expand and collapse rows */
 933   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand_collapse_cursor_row", 3,
 934                                 G_TYPE_BOOLEAN, TRUE,
 935                                 G_TYPE_BOOLEAN, TRUE,
 936                                 G_TYPE_BOOLEAN, FALSE);
 937
 938   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
 939                                 "expand_collapse_cursor_row", 3,
 940                                 G_TYPE_BOOLEAN, TRUE,
 941                                 G_TYPE_BOOLEAN, TRUE,
 942                                 G_TYPE_BOOLEAN, TRUE);
 943   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
 944                                 "expand_collapse_cursor_row", 3,
 945                                 G_TYPE_BOOLEAN, TRUE,
 946                                 G_TYPE_BOOLEAN, TRUE,
 947                                 G_TYPE_BOOLEAN, TRUE);
 948
 949   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
 950                                 "expand_collapse_cursor_row", 3,
 951                                 G_TYPE_BOOLEAN, TRUE,
 952                                 G_TYPE_BOOLEAN, FALSE,
 953                                 G_TYPE_BOOLEAN, FALSE);
 954   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
 955                                 "expand_collapse_cursor_row", 3,
 956                                 G_TYPE_BOOLEAN, TRUE,
 957                                 G_TYPE_BOOLEAN, FALSE,
 958                                 G_TYPE_BOOLEAN, FALSE);
 959
 960   /* Not doable on US keyboards */
 961   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 962                                 G_TYPE_BOOLEAN, TRUE,
 963                                 G_TYPE_BOOLEAN, TRUE,
 964                                 G_TYPE_BOOLEAN, TRUE);
 965   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand_collapse_cursor_row", 3,
 966                                 G_TYPE_BOOLEAN, TRUE,
 967                                 G_TYPE_BOOLEAN, TRUE,
 968                                 G_TYPE_BOOLEAN, FALSE);
 969   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 970                                 G_TYPE_BOOLEAN, TRUE,
 971                                 G_TYPE_BOOLEAN, TRUE,
 972                                 G_TYPE_BOOLEAN, TRUE);
 973   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 974                                 G_TYPE_BOOLEAN, TRUE,
 975                                 G_TYPE_BOOLEAN, TRUE,
 976                                 G_TYPE_BOOLEAN, TRUE);
 977   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
 978                                 "expand_collapse_cursor_row", 3,
 979                                 G_TYPE_BOOLEAN, FALSE,
 980                                 G_TYPE_BOOLEAN, TRUE,
 981                                 G_TYPE_BOOLEAN, TRUE);
 982   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_SHIFT_MASK,
 983                                 "expand_collapse_cursor_row", 3,
 984                                 G_TYPE_BOOLEAN, FALSE,
 985                                 G_TYPE_BOOLEAN, TRUE,
 986                                 G_TYPE_BOOLEAN, TRUE);
 987   gtk_binding_entry_add_signal (binding_set, GDK_Right,
 988                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
 989                                 "expand_collapse_cursor_row", 3,
 990                                 G_TYPE_BOOLEAN, FALSE,
 991                                 G_TYPE_BOOLEAN, TRUE,
 992                                 G_TYPE_BOOLEAN, TRUE);
 993   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
 994                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
 995                                 "expand_collapse_cursor_row", 3,
 996                                 G_TYPE_BOOLEAN, FALSE,
 997                                 G_TYPE_BOOLEAN, TRUE,
 998                                 G_TYPE_BOOLEAN, TRUE);
 999
1000   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand_collapse_cursor_row", 3,
1001                                 G_TYPE_BOOLEAN, TRUE,
1002                                 G_TYPE_BOOLEAN, FALSE,
1003                                 G_TYPE_BOOLEAN, FALSE);
1004   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
1005                                 G_TYPE_BOOLEAN, TRUE,
1006                                 G_TYPE_BOOLEAN, FALSE,
1007                                 G_TYPE_BOOLEAN, TRUE);
1008   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand_collapse_cursor_row", 3,
1009                                 G_TYPE_BOOLEAN, TRUE,
1010                                 G_TYPE_BOOLEAN, FALSE,
1011                                 G_TYPE_BOOLEAN, FALSE);
1012   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
1013                                 G_TYPE_BOOLEAN, TRUE,
1014                                 G_TYPE_BOOLEAN, FALSE,
1015                                 G_TYPE_BOOLEAN, TRUE);
1016   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1017                                 "expand_collapse_cursor_row", 3,
1018                                 G_TYPE_BOOLEAN, FALSE,
1019                                 G_TYPE_BOOLEAN, FALSE,
1020                                 G_TYPE_BOOLEAN, TRUE);
1021   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_SHIFT_MASK,
1022                                 "expand_collapse_cursor_row", 3,
1023                                 G_TYPE_BOOLEAN, FALSE,
1024                                 G_TYPE_BOOLEAN, FALSE,
1025                                 G_TYPE_BOOLEAN, TRUE);
1026   gtk_binding_entry_add_signal (binding_set, GDK_Left,
1027                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1028                                 "expand_collapse_cursor_row", 3,
1029                                 G_TYPE_BOOLEAN, FALSE,
1030                                 G_TYPE_BOOLEAN, FALSE,
1031                                 G_TYPE_BOOLEAN, TRUE);
1032   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1033                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1034                                 "expand_collapse_cursor_row", 3,
1035                                 G_TYPE_BOOLEAN, FALSE,
1036                                 G_TYPE_BOOLEAN, FALSE,
1037                                 G_TYPE_BOOLEAN, TRUE);
1038
1039   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select_cursor_parent", 0);
1040
1041   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start_interactive_search", 0);
1042
1043   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start_interactive_search", 0);
1044 }
1045
1046 static void
1047 gtk_tree_view_init (GtkTreeView *tree_view)
1048 {
1049   tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);
1050   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
1051
1052   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1053
1054   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1055                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1056                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1057
1058   /* We need some padding */
1059   tree_view->priv->dy = 0;
1060   tree_view->priv->n_columns = 0;
1061   tree_view->priv->header_height = 1;
1062   tree_view->priv->x_drag = 0;
1063   tree_view->priv->drag_pos = -1;
1064   tree_view->priv->header_has_focus = FALSE;
1065   tree_view->priv->pressed_button = -1;
1066   tree_view->priv->press_start_x = -1;
1067   tree_view->priv->press_start_y = -1;
1068   tree_view->priv->reorderable = FALSE;
1069   tree_view->priv->presize_handler_timer = 0;
1070   tree_view->priv->scroll_sync_timer = 0;
1071   tree_view->priv->fixed_height = -1;
1072   tree_view->priv->fixed_height_mode = 0;
1073   tree_view->priv->fixed_height_check = 0;
1074   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1075   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1076   tree_view->priv->enable_search = TRUE;
1077   tree_view->priv->search_column = -1;
1078   tree_view->priv->search_dialog_position_func = gtk_tree_view_search_position_func;
1079   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1080   tree_view->priv->init_hadjust_value = TRUE;
1081   tree_view->priv->width = 0;
1082 }
1083
1084 \f
1085
1086 /* GObject Methods
1087  */
1088
1089 static void
1090 gtk_tree_view_set_property (GObject         *object,
1091                             guint            prop_id,
1092                             const GValue    *value,
1093                             GParamSpec      *pspec)
1094 {
1095   GtkTreeView *tree_view;
1096
1097   tree_view = GTK_TREE_VIEW (object);
1098
1099   switch (prop_id)
1100     {
1101     case PROP_MODEL:
1102       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1103       break;
1104     case PROP_HADJUSTMENT:
1105       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1106       break;
1107     case PROP_VADJUSTMENT:
1108       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1109       break;
1110     case PROP_HEADERS_VISIBLE:
1111       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1112       break;
1113     case PROP_HEADERS_CLICKABLE:
1114       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1115       break;
1116     case PROP_EXPANDER_COLUMN:
1117       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1118       break;
1119     case PROP_REORDERABLE:
1120       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1121       break;
1122     case PROP_RULES_HINT:
1123       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1124       break;
1125     case PROP_ENABLE_SEARCH:
1126       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1127       break;
1128     case PROP_SEARCH_COLUMN:
1129       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1130       break;
1131     case PROP_FIXED_HEIGHT_MODE:
1132       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1133       break;
1134     default:
1135       break;
1136     }
1137 }
1138
1139 static void
1140 gtk_tree_view_get_property (GObject    *object,
1141                             guint       prop_id,
1142                             GValue     *value,
1143                             GParamSpec *pspec)
1144 {
1145   GtkTreeView *tree_view;
1146
1147   tree_view = GTK_TREE_VIEW (object);
1148
1149   switch (prop_id)
1150     {
1151     case PROP_MODEL:
1152       g_value_set_object (value, tree_view->priv->model);
1153       break;
1154     case PROP_HADJUSTMENT:
1155       g_value_set_object (value, tree_view->priv->hadjustment);
1156       break;
1157     case PROP_VADJUSTMENT:
1158       g_value_set_object (value, tree_view->priv->vadjustment);
1159       break;
1160     case PROP_HEADERS_VISIBLE:
1161       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1162       break;
1163     case PROP_EXPANDER_COLUMN:
1164       g_value_set_object (value, tree_view->priv->expander_column);
1165       break;
1166     case PROP_REORDERABLE:
1167       g_value_set_boolean (value, tree_view->priv->reorderable);
1168       break;
1169     case PROP_RULES_HINT:
1170       g_value_set_boolean (value, tree_view->priv->has_rules);
1171       break;
1172     case PROP_ENABLE_SEARCH:
1173       g_value_set_boolean (value, tree_view->priv->enable_search);
1174       break;
1175     case PROP_SEARCH_COLUMN:
1176       g_value_set_int (value, tree_view->priv->search_column);
1177       break;
1178     case PROP_FIXED_HEIGHT_MODE:
1179       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1180       break;
1181     default:
1182       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1183       break;
1184     }
1185 }
1186
1187 static void
1188 gtk_tree_view_finalize (GObject *object)
1189 {
1190   GtkTreeView *tree_view = (GtkTreeView *) object;
1191
1192   g_free (tree_view->priv);
1193
1194   if (G_OBJECT_CLASS (parent_class)->finalize)
1195     (* G_OBJECT_CLASS (parent_class)->finalize) (object);
1196 }
1197
1198 \f
1199
1200 /* GtkObject Methods
1201  */
1202
1203 static void
1204 gtk_tree_view_destroy (GtkObject *object)
1205 {
1206   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1207   GtkWidget *search_dialog;
1208   GList *list;
1209
1210   gtk_tree_view_stop_editing (tree_view, TRUE);
1211
1212   if (tree_view->priv->columns != NULL)
1213     {
1214       list = tree_view->priv->columns;
1215       while (list)
1216         {
1217           GtkTreeViewColumn *column;
1218           column = GTK_TREE_VIEW_COLUMN (list->data);
1219           list = list->next;
1220           gtk_tree_view_remove_column (tree_view, column);
1221         }
1222       tree_view->priv->columns = NULL;
1223     }
1224
1225   if (tree_view->priv->tree != NULL)
1226     {
1227       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1228       _gtk_rbtree_free (tree_view->priv->tree);
1229       tree_view->priv->tree = NULL;
1230     }
1231
1232   if (tree_view->priv->selection != NULL)
1233     {
1234       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1235       g_object_unref (tree_view->priv->selection);
1236       tree_view->priv->selection = NULL;
1237     }
1238
1239   if (tree_view->priv->scroll_to_path != NULL)
1240     {
1241       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1242       tree_view->priv->scroll_to_path = NULL;
1243     }
1244
1245   if (tree_view->priv->drag_dest_row != NULL)
1246     {
1247       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1248       tree_view->priv->drag_dest_row = NULL;
1249     }
1250
1251   if (tree_view->priv->last_button_press != NULL)
1252     {
1253       gtk_tree_row_reference_free (tree_view->priv->last_button_press);
1254       tree_view->priv->last_button_press = NULL;
1255     }
1256
1257   if (tree_view->priv->last_button_press_2 != NULL)
1258     {
1259       gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
1260       tree_view->priv->last_button_press_2 = NULL;
1261     }
1262
1263   if (tree_view->priv->top_row != NULL)
1264     {
1265       gtk_tree_row_reference_free (tree_view->priv->top_row);
1266       tree_view->priv->top_row = NULL;
1267     }
1268
1269   if (tree_view->priv->column_drop_func_data &&
1270       tree_view->priv->column_drop_func_data_destroy)
1271     {
1272       (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
1273       tree_view->priv->column_drop_func_data = NULL;
1274     }
1275
1276   if (tree_view->priv->destroy_count_destroy &&
1277       tree_view->priv->destroy_count_data)
1278     {
1279       (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
1280       tree_view->priv->destroy_count_data = NULL;
1281     }
1282
1283   gtk_tree_row_reference_free (tree_view->priv->cursor);
1284   tree_view->priv->cursor = NULL;
1285
1286   gtk_tree_row_reference_free (tree_view->priv->anchor);
1287   tree_view->priv->anchor = NULL;
1288
1289   /* destroy interactive search dialog */
1290   search_dialog = g_object_get_data (G_OBJECT (tree_view),
1291                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
1292   if (search_dialog)
1293     gtk_tree_view_search_dialog_destroy (search_dialog,
1294                                          tree_view);
1295
1296   if (tree_view->priv->search_destroy)
1297     {
1298       (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
1299       tree_view->priv->search_user_data = NULL;
1300     }
1301
1302   gtk_tree_view_set_model (tree_view, NULL);
1303
1304   if (GTK_OBJECT_CLASS (parent_class)->destroy)
1305     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
1306 }
1307
1308 \f
1309
1310 /* GtkWidget Methods
1311  */
1312
1313 /* GtkWidget::map helper */
1314 static void
1315 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1316 {
1317   GList *list;
1318
1319   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1320
1321   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1322     {
1323       GtkTreeViewColumn *column;
1324
1325       for (list = tree_view->priv->columns; list; list = list->next)
1326         {
1327           column = list->data;
1328           if (GTK_WIDGET_VISIBLE (column->button) &&
1329               !GTK_WIDGET_MAPPED (column->button))
1330             gtk_widget_map (column->button);
1331         }
1332       for (list = tree_view->priv->columns; list; list = list->next)
1333         {
1334           column = list->data;
1335           if (column->visible == FALSE)
1336             continue;
1337           if (column->resizable)
1338             {
1339               gdk_window_raise (column->window);
1340               gdk_window_show (column->window);
1341             }
1342           else
1343             gdk_window_hide (column->window);
1344         }
1345       gdk_window_show (tree_view->priv->header_window);
1346     }
1347 }
1348
1349 static void
1350 gtk_tree_view_map (GtkWidget *widget)
1351 {
1352   GList *tmp_list;
1353   GtkTreeView *tree_view;
1354
1355   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1356
1357   tree_view = GTK_TREE_VIEW (widget);
1358
1359   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1360
1361   tmp_list = tree_view->priv->children;
1362   while (tmp_list)
1363     {
1364       GtkTreeViewChild *child = tmp_list->data;
1365       tmp_list = tmp_list->next;
1366
1367       if (GTK_WIDGET_VISIBLE (child->widget))
1368         {
1369           if (!GTK_WIDGET_MAPPED (child->widget))
1370             gtk_widget_map (child->widget);
1371         }
1372     }
1373   gdk_window_show (tree_view->priv->bin_window);
1374
1375   gtk_tree_view_map_buttons (tree_view);
1376
1377   gdk_window_show (widget->window);
1378 }
1379
1380 static void
1381 gtk_tree_view_realize (GtkWidget *widget)
1382 {
1383   GList *tmp_list;
1384   GtkTreeView *tree_view;
1385   GdkGCValues values;
1386   GdkWindowAttr attributes;
1387   gint attributes_mask;
1388
1389   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1390
1391   tree_view = GTK_TREE_VIEW (widget);
1392
1393   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1394
1395   /* Make the main, clipping window */
1396   attributes.window_type = GDK_WINDOW_CHILD;
1397   attributes.x = widget->allocation.x;
1398   attributes.y = widget->allocation.y;
1399   attributes.width = widget->allocation.width;
1400   attributes.height = widget->allocation.height;
1401   attributes.wclass = GDK_INPUT_OUTPUT;
1402   attributes.visual = gtk_widget_get_visual (widget);
1403   attributes.colormap = gtk_widget_get_colormap (widget);
1404   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1405
1406   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1407
1408   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1409                                    &attributes, attributes_mask);
1410   gdk_window_set_user_data (widget->window, widget);
1411
1412   /* Make the window for the tree */
1413   attributes.x = 0;
1414   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1415   attributes.width = tree_view->priv->width;
1416   attributes.height = widget->allocation.height;
1417   attributes.event_mask = GDK_EXPOSURE_MASK |
1418     GDK_SCROLL_MASK |
1419     GDK_POINTER_MOTION_MASK |
1420     GDK_ENTER_NOTIFY_MASK |
1421     GDK_LEAVE_NOTIFY_MASK |
1422     GDK_BUTTON_PRESS_MASK |
1423     GDK_BUTTON_RELEASE_MASK |
1424     gtk_widget_get_events (widget);
1425
1426   tree_view->priv->bin_window = gdk_window_new (widget->window,
1427                                                 &attributes, attributes_mask);
1428   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1429
1430   /* Make the column header window */
1431   attributes.x = 0;
1432   attributes.y = 0;
1433   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1434   attributes.height = tree_view->priv->header_height;
1435   attributes.event_mask = (GDK_EXPOSURE_MASK |
1436                            GDK_SCROLL_MASK |
1437                            GDK_BUTTON_PRESS_MASK |
1438                            GDK_BUTTON_RELEASE_MASK |
1439                            GDK_KEY_PRESS_MASK |
1440                            GDK_KEY_RELEASE_MASK) |
1441     gtk_widget_get_events (widget);
1442
1443   tree_view->priv->header_window = gdk_window_new (widget->window,
1444                                                    &attributes, attributes_mask);
1445   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1446
1447
1448   values.foreground = (widget->style->white.pixel==0 ?
1449                        widget->style->black:widget->style->white);
1450   values.function = GDK_XOR;
1451   values.subwindow_mode = GDK_INCLUDE_INFERIORS;
1452
1453   /* Add them all up. */
1454   widget->style = gtk_style_attach (widget->style, widget->window);
1455   gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1456   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1457   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1458
1459   tmp_list = tree_view->priv->children;
1460   while (tmp_list)
1461     {
1462       GtkTreeViewChild *child = tmp_list->data;
1463       tmp_list = tmp_list->next;
1464
1465       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1466     }
1467
1468   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1469     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1470
1471   install_presize_handler (tree_view);
1472 }
1473
1474 static void
1475 gtk_tree_view_unrealize (GtkWidget *widget)
1476 {
1477   GtkTreeView *tree_view;
1478   GList *list;
1479
1480   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1481
1482   tree_view = GTK_TREE_VIEW (widget);
1483
1484   if (tree_view->priv->scroll_timeout != 0)
1485     {
1486       g_source_remove (tree_view->priv->scroll_timeout);
1487       tree_view->priv->scroll_timeout = 0;
1488     }
1489
1490   if (tree_view->priv->open_dest_timeout != 0)
1491     {
1492       g_source_remove (tree_view->priv->open_dest_timeout);
1493       tree_view->priv->open_dest_timeout = 0;
1494     }
1495
1496   if (tree_view->priv->expand_collapse_timeout != 0)
1497     {
1498       g_source_remove (tree_view->priv->expand_collapse_timeout);
1499       tree_view->priv->expand_collapse_timeout = 0;
1500     }
1501
1502   if (tree_view->priv->presize_handler_timer != 0)
1503     {
1504       g_source_remove (tree_view->priv->presize_handler_timer);
1505       tree_view->priv->presize_handler_timer = 0;
1506     }
1507
1508   if (tree_view->priv->validate_rows_timer != 0)
1509     {
1510       g_source_remove (tree_view->priv->validate_rows_timer);
1511       tree_view->priv->validate_rows_timer = 0;
1512     }
1513
1514   if (tree_view->priv->scroll_sync_timer != 0)
1515     {
1516       g_source_remove (tree_view->priv->scroll_sync_timer);
1517       tree_view->priv->scroll_sync_timer = 0;
1518     }
1519
1520   for (list = tree_view->priv->columns; list; list = list->next)
1521     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1522
1523   gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
1524   gdk_window_destroy (tree_view->priv->bin_window);
1525   tree_view->priv->bin_window = NULL;
1526
1527   gdk_window_set_user_data (tree_view->priv->header_window, NULL);
1528   gdk_window_destroy (tree_view->priv->header_window);
1529   tree_view->priv->header_window = NULL;
1530
1531   if (tree_view->priv->drag_window)
1532     {
1533       gdk_window_set_user_data (tree_view->priv->drag_window, NULL);
1534       gdk_window_destroy (tree_view->priv->drag_window);
1535       tree_view->priv->drag_window = NULL;
1536     }
1537
1538   if (tree_view->priv->drag_highlight_window)
1539     {
1540       gdk_window_set_user_data (tree_view->priv->drag_highlight_window, NULL);
1541       gdk_window_destroy (tree_view->priv->drag_highlight_window);
1542       tree_view->priv->drag_highlight_window = NULL;
1543     }
1544
1545   /* GtkWidget::unrealize destroys children and widget->window */
1546   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1547     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1548 }
1549
1550 /* GtkWidget::size_request helper */
1551 static void
1552 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1553 {
1554   GList *list;
1555
1556   tree_view->priv->header_height = 0;
1557
1558   if (tree_view->priv->model)
1559     {
1560       for (list = tree_view->priv->columns; list; list = list->next)
1561         {
1562           GtkRequisition requisition;
1563           GtkTreeViewColumn *column = list->data;
1564
1565           if (column->button == NULL)
1566             continue;
1567
1568           column = list->data;
1569
1570           gtk_widget_size_request (column->button, &requisition);
1571           column->button_request = requisition.width;
1572           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1573         }
1574     }
1575 }
1576
1577
1578 /* Called only by ::size_request */
1579 static void
1580 gtk_tree_view_update_size (GtkTreeView *tree_view)
1581 {
1582   GList *list;
1583   GtkTreeViewColumn *column;
1584   gint i;
1585
1586   if (tree_view->priv->model == NULL)
1587     {
1588       tree_view->priv->width = 0;
1589       tree_view->priv->prev_width = 0;
1590       tree_view->priv->height = 0;
1591       return;
1592     }
1593
1594   tree_view->priv->prev_width = tree_view->priv->width;
1595   tree_view->priv->width = 0;
1596   /* keep this in sync with size_allocate below */
1597   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1598     {
1599       gint real_requested_width = 0;
1600       column = list->data;
1601       if (!column->visible)
1602         continue;
1603
1604       if (column->use_resized_width)
1605         {
1606           real_requested_width = column->resized_width;
1607         }
1608       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1609         {
1610           real_requested_width = column->fixed_width;
1611         }
1612       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1613         {
1614           real_requested_width = MAX (column->requested_width, column->button_request);
1615         }
1616       else
1617         {
1618           real_requested_width = column->requested_width;
1619         }
1620
1621       if (column->min_width != -1)
1622         real_requested_width = MAX (real_requested_width, column->min_width);
1623       if (column->max_width != -1)
1624         real_requested_width = MIN (real_requested_width, column->max_width);
1625
1626       tree_view->priv->width += real_requested_width;
1627     }
1628
1629   if (tree_view->priv->tree == NULL)
1630     tree_view->priv->height = 0;
1631   else
1632     tree_view->priv->height = tree_view->priv->tree->root->offset;
1633 }
1634
1635 static void
1636 gtk_tree_view_size_request (GtkWidget      *widget,
1637                             GtkRequisition *requisition)
1638 {
1639   GtkTreeView *tree_view;
1640   GList *tmp_list;
1641
1642   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1643
1644   tree_view = GTK_TREE_VIEW (widget);
1645
1646   /* we validate GTK_TREE_VIEW_NUM_ROWS_PER_IDLE rows initially just to make
1647    * sure we have some size. In practice, with a lot of static lists, this
1648    * should get a good width.
1649    */
1650   validate_rows (tree_view);
1651   gtk_tree_view_size_request_columns (tree_view);
1652   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
1653
1654   requisition->width = tree_view->priv->width;
1655   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
1656
1657   tmp_list = tree_view->priv->children;
1658
1659   while (tmp_list)
1660     {
1661       GtkTreeViewChild *child = tmp_list->data;
1662       GtkRequisition child_requisition;
1663
1664       tmp_list = tmp_list->next;
1665
1666       if (GTK_WIDGET_VISIBLE (child->widget))
1667         gtk_widget_size_request (child->widget, &child_requisition);
1668     }
1669 }
1670
1671
1672 static void
1673 invalidate_column (GtkTreeView       *tree_view,
1674                    GtkTreeViewColumn *column)
1675 {
1676   gint column_offset = 0;
1677   GList *list;
1678   GtkWidget *widget = GTK_WIDGET (tree_view);
1679   gboolean rtl;
1680
1681   if (!GTK_WIDGET_REALIZED (widget))
1682     return;
1683
1684   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
1685   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
1686        list;
1687        list = (rtl ? list->prev : list->next))
1688     {
1689       GtkTreeViewColumn *tmpcolumn = list->data;
1690       if (tmpcolumn == column)
1691         {
1692           GdkRectangle invalid_rect;
1693
1694           invalid_rect.x = column_offset;
1695           invalid_rect.y = 0;
1696           invalid_rect.width = column->width;
1697           invalid_rect.height = widget->allocation.height;
1698
1699           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
1700           break;
1701         }
1702
1703       column_offset += tmpcolumn->width;
1704     }
1705 }
1706
1707 static void
1708 invalidate_last_column (GtkTreeView *tree_view)
1709 {
1710   GList *last_column;
1711   gboolean rtl;
1712
1713   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
1714
1715   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
1716        last_column;
1717        last_column = (rtl ? last_column->next : last_column->prev))
1718     {
1719       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
1720         {
1721           invalidate_column (tree_view, last_column->data);
1722           return;
1723         }
1724     }
1725 }
1726
1727 static gint
1728 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
1729                                                     GtkTreeViewColumn *column)
1730 {
1731   gint real_requested_width;
1732
1733   if (column->use_resized_width)
1734     {
1735       real_requested_width = column->resized_width;
1736     }
1737   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1738     {
1739       real_requested_width = column->fixed_width;
1740     }
1741   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1742     {
1743       real_requested_width = MAX (column->requested_width, column->button_request);
1744     }
1745   else
1746     {
1747       real_requested_width = column->requested_width;
1748       if (real_requested_width < 0)
1749         real_requested_width = 0;
1750     }
1751
1752   if (column->min_width != -1)
1753     real_requested_width = MAX (real_requested_width, column->min_width);
1754   if (column->max_width != -1)
1755     real_requested_width = MIN (real_requested_width, column->max_width);
1756
1757   return real_requested_width;
1758 }
1759
1760 /* GtkWidget::size_allocate helper */
1761 static void
1762 gtk_tree_view_size_allocate_columns (GtkWidget *widget)
1763 {
1764   GtkTreeView *tree_view;
1765   GList *list, *first_column, *last_column;
1766   GtkTreeViewColumn *column;
1767   GtkAllocation allocation;
1768   gint width = 0;
1769   gint extra, extra_per_column;
1770   gint full_requested_width = 0;
1771   gint number_of_expand_columns = 0;
1772   gboolean rtl;
1773
1774   tree_view = GTK_TREE_VIEW (widget);
1775
1776   for (last_column = g_list_last (tree_view->priv->columns);
1777        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
1778        last_column = last_column->prev)
1779     ;
1780   if (last_column == NULL)
1781     return;
1782
1783   for (first_column = g_list_first (tree_view->priv->columns);
1784        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
1785        first_column = first_column->next)
1786     ;
1787
1788   allocation.y = 0;
1789   allocation.height = tree_view->priv->header_height;
1790
1791   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
1792
1793   /* find out how many extra space and expandable columns we have */
1794   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
1795     {
1796       column = (GtkTreeViewColumn *)list->data;
1797
1798       if (!column->visible)
1799         continue;
1800
1801       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
1802
1803       if (column->expand)
1804         number_of_expand_columns++;
1805     }
1806
1807   extra = MAX (widget->allocation.width - full_requested_width, 0);
1808   if (number_of_expand_columns > 0)
1809     extra_per_column = extra/number_of_expand_columns;
1810   else
1811     extra_per_column = 0;
1812
1813   for (list = (rtl ? last_column : first_column);
1814        list != (rtl ? first_column->prev : last_column->next);
1815        list = (rtl ? list->prev : list->next))
1816     {
1817       gint real_requested_width = 0;
1818       gint old_width;
1819
1820       column = list->data;
1821       old_width = column->width;
1822
1823       if (!column->visible)
1824         continue;
1825
1826       /* We need to handle the dragged button specially.
1827        */
1828       if (column == tree_view->priv->drag_column)
1829         {
1830           GtkAllocation drag_allocation;
1831           gdk_drawable_get_size (tree_view->priv->drag_window,
1832                                  &(drag_allocation.width),
1833                                  &(drag_allocation.height));
1834           drag_allocation.x = 0;
1835           drag_allocation.y = 0;
1836           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
1837                                     &drag_allocation);
1838           width += drag_allocation.width;
1839           continue;
1840         }
1841
1842       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
1843
1844       allocation.x = width;
1845       column->width = real_requested_width;
1846
1847       if (column->expand)
1848         {
1849           if (number_of_expand_columns == 1)
1850             {
1851               /* We add the remander to the last column as
1852                * */
1853               column->width += extra;
1854             }
1855           else
1856             {
1857               column->width += extra_per_column;
1858               extra -= extra_per_column;
1859               number_of_expand_columns --;
1860             }
1861         }
1862       else if (number_of_expand_columns == 0 &&
1863                list == last_column)
1864         {
1865           column->width += extra;
1866         }
1867
1868       g_object_notify (G_OBJECT (column), "width");
1869
1870       allocation.width = column->width;
1871       width += column->width;
1872
1873       if (column->width > old_width)
1874         invalidate_column (tree_view, column);
1875
1876       gtk_widget_size_allocate (column->button, &allocation);
1877
1878       if (column->window)
1879         gdk_window_move_resize (column->window,
1880                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
1881                                 allocation.y,
1882                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
1883     }
1884 }
1885
1886
1887 static void
1888 gtk_tree_view_size_allocate (GtkWidget     *widget,
1889                              GtkAllocation *allocation)
1890 {
1891   GList *tmp_list;
1892   GtkTreeView *tree_view;
1893   gboolean width_changed = FALSE;
1894   gboolean dy_changed = FALSE;
1895   gint old_width = widget->allocation.width;
1896
1897   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1898
1899   if (allocation->width != widget->allocation.width)
1900     width_changed = TRUE;
1901
1902   widget->allocation = *allocation;
1903
1904   tree_view = GTK_TREE_VIEW (widget);
1905
1906   tmp_list = tree_view->priv->children;
1907
1908   while (tmp_list)
1909     {
1910       GtkAllocation allocation;
1911
1912       GtkTreeViewChild *child = tmp_list->data;
1913       tmp_list = tmp_list->next;
1914
1915       /* totally ignore our childs requisition */
1916       allocation.x = child->x;
1917       allocation.y = child->y;
1918       allocation.width = child->width;
1919       allocation.height = child->height;
1920       gtk_widget_size_allocate (child->widget, &allocation);
1921     }
1922
1923
1924   tree_view->priv->hadjustment->page_size = allocation->width;
1925   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
1926   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
1927   tree_view->priv->hadjustment->lower = 0;
1928   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
1929
1930   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
1931      {
1932       if (allocation->width < tree_view->priv->width)
1933          {
1934          if (tree_view->priv->init_hadjust_value)
1935            {
1936            tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1937            tree_view->priv->init_hadjust_value = FALSE;
1938            }
1939          else if(allocation->width != old_width)
1940            tree_view->priv->hadjustment->value = CLAMP(tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
1941          else
1942            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);
1943          }
1944       else
1945          {
1946          tree_view->priv->hadjustment->value = 0;
1947          tree_view->priv->init_hadjust_value = TRUE;
1948          }
1949      }
1950   else
1951      if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
1952         tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1953
1954   gtk_adjustment_changed (tree_view->priv->hadjustment);
1955
1956   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
1957   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
1958   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
1959   tree_view->priv->vadjustment->lower = 0;
1960   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
1961
1962   if (tree_view->priv->vadjustment->value + allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view) > tree_view->priv->height)
1963     {
1964       double before = tree_view->priv->vadjustment->value;
1965       gtk_adjustment_set_value (tree_view->priv->vadjustment,
1966                                 MAX (tree_view->priv->height - tree_view->priv->vadjustment->page_size, 0));
1967       if (before != tree_view->priv->vadjustment->value)
1968         dy_changed = TRUE;
1969     }
1970
1971   gtk_adjustment_changed (tree_view->priv->vadjustment);
1972
1973   if (GTK_WIDGET_REALIZED (widget))
1974     {
1975       gdk_window_move_resize (widget->window,
1976                               allocation->x, allocation->y,
1977                               allocation->width, allocation->height);
1978       gdk_window_move_resize (tree_view->priv->header_window,
1979                               - (gint) tree_view->priv->hadjustment->value,
1980                               0,
1981                               MAX (tree_view->priv->width, allocation->width),
1982                               tree_view->priv->header_height);
1983       gdk_window_move_resize (tree_view->priv->bin_window,
1984                               - (gint) tree_view->priv->hadjustment->value,
1985                               TREE_VIEW_HEADER_HEIGHT (tree_view),
1986                               MAX (tree_view->priv->width, allocation->width),
1987                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
1988     }
1989
1990   gtk_tree_view_size_allocate_columns (widget);
1991
1992   if (GTK_WIDGET_REALIZED (widget))
1993     {
1994       gboolean has_expand_column = FALSE;
1995       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1996         {
1997           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
1998             {
1999               has_expand_column = TRUE;
2000               break;
2001             }
2002         }
2003
2004       /* This little hack only works if we have an LTR locale, and no column has the  */
2005       if (width_changed)
2006         {
2007           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2008               ! has_expand_column)
2009             invalidate_last_column (tree_view);
2010           else
2011             gtk_widget_queue_draw (widget);
2012         }
2013
2014       if (dy_changed)
2015         gtk_widget_queue_draw (widget);
2016     }
2017 }
2018
2019 static gboolean
2020 gtk_tree_view_button_press (GtkWidget      *widget,
2021                             GdkEventButton *event)
2022 {
2023   GtkTreeView *tree_view;
2024   GList *list;
2025   GtkTreeViewColumn *column = NULL;
2026   gint i;
2027   GdkRectangle background_area;
2028   GdkRectangle cell_area;
2029   gint vertical_separator;
2030   gint horizontal_separator;
2031   gboolean rtl;
2032
2033   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2034   g_return_val_if_fail (event != NULL, FALSE);
2035
2036   tree_view = GTK_TREE_VIEW (widget);
2037   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2038   gtk_tree_view_stop_editing (tree_view, FALSE);
2039   gtk_widget_style_get (widget,
2040                         "vertical_separator", &vertical_separator,
2041                         "horizontal_separator", &horizontal_separator,
2042                         NULL);
2043
2044
2045   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2046    * we're done handling the button press.
2047    */
2048   if (event->window == tree_view->priv->bin_window &&
2049       tree_view->priv->tree != NULL)
2050     {
2051     }
2052
2053   if (event->window == tree_view->priv->bin_window &&
2054       tree_view->priv->tree != NULL)
2055     {
2056       GtkRBNode *node;
2057       GtkRBTree *tree;
2058       GtkTreePath *path;
2059       gchar *path_string;
2060       gint depth;
2061       gint new_y;
2062       gint y_offset;
2063       gint dval;
2064       gint pre_val, aft_val;
2065       GtkTreeViewColumn *column = NULL;
2066       GtkCellRenderer *focus_cell = NULL;
2067       gint column_handled_click = FALSE;
2068       gboolean row_double_click = FALSE;
2069       gboolean rtl;
2070       GtkWidget *grab_widget;
2071
2072       /* are we in an arrow? */
2073       if (tree_view->priv->prelight_node &&
2074           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2075         {
2076           if (event->button == 1)
2077             {
2078               gtk_grab_add (widget);
2079               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2080               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2081               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2082                                         tree_view->priv->prelight_tree,
2083                                         tree_view->priv->prelight_node,
2084                                         event->x,
2085                                         event->y);
2086             }
2087           if (!GTK_WIDGET_HAS_FOCUS (widget))
2088             gtk_widget_grab_focus (widget);
2089           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2090           return TRUE;
2091         }
2092
2093       /* find the node that was clicked */
2094       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2095       if (new_y < 0)
2096         new_y = 0;
2097       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2098
2099       if (node == NULL)
2100         {
2101           /* We clicked in dead space */
2102           if (!GTK_WIDGET_HAS_FOCUS (widget))
2103             gtk_widget_grab_focus (widget);
2104           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2105           return TRUE;
2106         }
2107
2108       /* Get the path and the node */
2109       path = _gtk_tree_view_find_path (tree_view, tree, node);
2110       depth = gtk_tree_path_get_depth (path);
2111       background_area.y = y_offset + event->y;
2112       background_area.height = MAX (GTK_RBNODE_GET_HEIGHT (node),
2113                                     tree_view->priv->expander_size);
2114       background_area.x = 0;
2115
2116
2117       /* Let the column have a chance at selecting it. */
2118       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2119       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2120            list; list = (rtl ? list->prev : list->next))
2121         {
2122           column = list->data;
2123
2124           if (!column->visible)
2125             continue;
2126
2127           background_area.width = column->width;
2128           if ((background_area.x > (gint) event->x) ||
2129               (background_area.x + background_area.width <= (gint) event->x))
2130             {
2131               background_area.x += background_area.width;
2132               continue;
2133             }
2134
2135           /* we found the focus column */
2136           cell_area = background_area;
2137           cell_area.width -= horizontal_separator;
2138           cell_area.height -= vertical_separator;
2139           cell_area.x += horizontal_separator/2;
2140           cell_area.y += vertical_separator/2;
2141           if (gtk_tree_view_is_expander_column (tree_view, column) &&
2142               TREE_VIEW_DRAW_EXPANDERS(tree_view))
2143             {
2144               cell_area.x += depth * tree_view->priv->expander_size;
2145               cell_area.width -= depth * tree_view->priv->expander_size;
2146             }
2147           break;
2148         }
2149
2150       if (column == NULL)
2151         {
2152           gtk_tree_path_free (path);
2153           if (!GTK_WIDGET_HAS_FOCUS (widget))
2154             gtk_widget_grab_focus (widget);
2155           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2156           return FALSE;
2157         }
2158
2159       tree_view->priv->focus_column = column;
2160
2161       /* decide if we edit */
2162       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2163           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2164         {
2165           GtkTreePath *anchor;
2166           GtkTreeIter iter;
2167
2168           if (tree_view->priv->anchor)
2169             {
2170               anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2171               gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2172               gtk_tree_view_column_cell_set_cell_data (column,
2173                                                        tree_view->priv->model,
2174                                                        &iter,
2175                                                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2176                                                        node->children?TRUE:FALSE);
2177             }
2178           else
2179             anchor = NULL;
2180
2181           if ((anchor && !gtk_tree_path_compare (anchor, path))
2182               || !_gtk_tree_view_column_has_editable_cell (column))
2183             {
2184               GtkCellEditable *cell_editable = NULL;
2185
2186               /* FIXME: get the right flags */
2187               guint flags = 0;
2188
2189               path_string = gtk_tree_path_to_string (path);
2190
2191               if (_gtk_tree_view_column_cell_event (column,
2192                                                     &cell_editable,
2193                                                     (GdkEvent *)event,
2194                                                     path_string,
2195                                                     &background_area,
2196                                                     &cell_area, flags))
2197                 {
2198                   if (cell_editable != NULL)
2199                     {
2200                       gint left, right;
2201                       GdkRectangle area;
2202
2203                       area = cell_area;
2204                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2205
2206                       area.x += left;
2207                       area.width -= right + left;
2208
2209                       gtk_tree_view_real_start_editing (tree_view,
2210                                                         column,
2211                                                         path,
2212                                                         cell_editable,
2213                                                         &area,
2214                                                         (GdkEvent *)event,
2215                                                         flags);
2216                       g_free (path_string);
2217                       gtk_tree_path_free (path);
2218                       gtk_tree_path_free (anchor);
2219                       return TRUE;
2220                     }
2221                   column_handled_click = TRUE;
2222                 }
2223               g_free (path_string);
2224             }
2225           if (anchor)
2226             gtk_tree_path_free (anchor);
2227         }
2228
2229       /* select */
2230       pre_val = tree_view->priv->vadjustment->value;
2231
2232       /* we only handle selection modifications on the first button press
2233        */
2234       if (event->type == GDK_BUTTON_PRESS)
2235         {
2236           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2237             tree_view->priv->ctrl_pressed = TRUE;
2238           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2239             tree_view->priv->shift_pressed = TRUE;
2240
2241           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2242           if (focus_cell)
2243             gtk_tree_view_column_focus_cell (column, focus_cell);
2244
2245           if (event->state & GDK_CONTROL_MASK)
2246             {
2247               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2248               gtk_tree_view_real_toggle_cursor_row (tree_view);
2249             }
2250           else if (event->state & GDK_SHIFT_MASK)
2251             {
2252               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2253               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2254             }
2255           else
2256             {
2257               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2258             }
2259
2260           tree_view->priv->ctrl_pressed = FALSE;
2261           tree_view->priv->shift_pressed = FALSE;
2262         }
2263
2264       /* the treeview may have been scrolled because of _set_cursor,
2265        * correct here
2266        */
2267
2268       aft_val = tree_view->priv->vadjustment->value;
2269       dval = pre_val - aft_val;
2270
2271       cell_area.y += dval;
2272       background_area.y += dval;
2273
2274       /* Save press to possibly begin a drag
2275        */
2276       grab_widget = gtk_grab_get_current ();
2277       if ((grab_widget == NULL || grab_widget == widget) &&
2278           !column_handled_click &&
2279           tree_view->priv->pressed_button < 0)
2280         {
2281           tree_view->priv->pressed_button = event->button;
2282           tree_view->priv->press_start_x = event->x;
2283           tree_view->priv->press_start_y = event->y;
2284         }
2285
2286       /* Test if a double click happened on the same row. */
2287       if (event->button == 1)
2288         {
2289           /* We also handle triple clicks here, because a user could have done
2290            * a first click and a second double click on different rows.
2291            */
2292           if ((event->type == GDK_2BUTTON_PRESS
2293                || event->type == GDK_3BUTTON_PRESS)
2294               && tree_view->priv->last_button_press)
2295             {
2296               GtkTreePath *lsc;
2297
2298               lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press);
2299
2300               if (lsc)
2301                 {
2302                   row_double_click = !gtk_tree_path_compare (lsc, path);
2303                   gtk_tree_path_free (lsc);
2304                 }
2305             }
2306
2307           if (row_double_click)
2308             {
2309               if (tree_view->priv->last_button_press)
2310                 gtk_tree_row_reference_free (tree_view->priv->last_button_press);
2311               if (tree_view->priv->last_button_press_2)
2312                 gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
2313               tree_view->priv->last_button_press = NULL;
2314               tree_view->priv->last_button_press_2 = NULL;
2315             }
2316           else
2317             {
2318               if (tree_view->priv->last_button_press)
2319                 gtk_tree_row_reference_free (tree_view->priv->last_button_press);
2320               tree_view->priv->last_button_press = tree_view->priv->last_button_press_2;
2321               tree_view->priv->last_button_press_2 = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
2322             }
2323         }
2324
2325       if (row_double_click)
2326         {
2327           gtk_grab_remove (widget);
2328           gtk_tree_view_row_activated (tree_view, path, column);
2329
2330           if (tree_view->priv->pressed_button == event->button)
2331             tree_view->priv->pressed_button = -1;
2332         }
2333
2334       gtk_tree_path_free (path);
2335
2336       if (!GTK_WIDGET_HAS_FOCUS (widget))
2337         gtk_widget_grab_focus (widget);
2338       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2339
2340       return TRUE;
2341     }
2342
2343   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2344    */
2345   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2346     {
2347       column = list->data;
2348       if (event->window == column->window &&
2349           column->resizable &&
2350           column->window)
2351         {
2352           gpointer drag_data;
2353
2354           if (event->type == GDK_2BUTTON_PRESS &&
2355               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2356             {
2357               _gtk_tree_view_column_autosize (tree_view, column);
2358               return TRUE;
2359             }
2360
2361           if (gdk_pointer_grab (column->window, FALSE,
2362                                 GDK_POINTER_MOTION_HINT_MASK |
2363                                 GDK_BUTTON1_MOTION_MASK |
2364                                 GDK_BUTTON_RELEASE_MASK,
2365                                 NULL, NULL, event->time))
2366             return FALSE;
2367
2368           gtk_grab_add (widget);
2369           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2370           column->resized_width = column->width;
2371           column->use_resized_width = TRUE;
2372
2373           /* block attached dnd signal handler */
2374           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2375           if (drag_data)
2376             g_signal_handlers_block_matched (widget,
2377                                              G_SIGNAL_MATCH_DATA,
2378                                              0, 0, NULL, NULL,
2379                                              drag_data);
2380
2381           if (!GTK_WIDGET_HAS_FOCUS (widget))
2382             gtk_widget_grab_focus (widget);
2383
2384           tree_view->priv->drag_pos = i;
2385           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2386           return TRUE;
2387         }
2388     }
2389   return FALSE;
2390 }
2391
2392 /* GtkWidget::button_release_event helper */
2393 static gboolean
2394 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2395                                           GdkEventButton *event)
2396 {
2397   GtkTreeView *tree_view;
2398   gboolean rtl;
2399
2400   tree_view = GTK_TREE_VIEW (widget);
2401
2402   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2403   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2404   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2405
2406   /* Move the button back */
2407   g_object_ref (tree_view->priv->drag_column->button);
2408   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2409   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2410   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2411   g_object_unref (tree_view->priv->drag_column->button);
2412   gtk_widget_queue_resize (widget);
2413   if (tree_view->priv->drag_column->resizable)
2414     {
2415       gdk_window_raise (tree_view->priv->drag_column->window);
2416       gdk_window_show (tree_view->priv->drag_column->window);
2417     }
2418   else
2419     gdk_window_hide (tree_view->priv->drag_column->window);
2420
2421   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2422
2423   if (rtl)
2424     {
2425       if (tree_view->priv->cur_reorder &&
2426           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2427         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2428                                          tree_view->priv->cur_reorder->right_column);
2429     }
2430   else
2431     {
2432       if (tree_view->priv->cur_reorder &&
2433           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2434         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2435                                          tree_view->priv->cur_reorder->left_column);
2436     }
2437   tree_view->priv->drag_column = NULL;
2438   gdk_window_hide (tree_view->priv->drag_window);
2439
2440   g_list_foreach (tree_view->priv->column_drag_info, (GFunc) g_free, NULL);
2441   g_list_free (tree_view->priv->column_drag_info);
2442   tree_view->priv->column_drag_info = NULL;
2443
2444   gdk_window_hide (tree_view->priv->drag_highlight_window);
2445
2446   /* Reset our flags */
2447   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2448   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2449
2450   return TRUE;
2451 }
2452
2453 /* GtkWidget::button_release_event helper */
2454 static gboolean
2455 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2456                                             GdkEventButton *event)
2457 {
2458   GtkTreeView *tree_view;
2459   gpointer drag_data;
2460   gint x;
2461   gint i;
2462
2463   tree_view = GTK_TREE_VIEW (widget);
2464
2465   i = tree_view->priv->drag_pos;
2466   tree_view->priv->drag_pos = -1;
2467
2468       /* unblock attached dnd signal handler */
2469   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2470   if (drag_data)
2471     g_signal_handlers_unblock_matched (widget,
2472                                        G_SIGNAL_MATCH_DATA,
2473                                        0, 0, NULL, NULL,
2474                                        drag_data);
2475
2476   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2477   gtk_widget_get_pointer (widget, &x, NULL);
2478   gtk_grab_remove (widget);
2479   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
2480                               event->time);
2481   return TRUE;
2482 }
2483
2484 static gboolean
2485 gtk_tree_view_button_release (GtkWidget      *widget,
2486                               GdkEventButton *event)
2487 {
2488   GtkTreeView *tree_view;
2489
2490   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2491   g_return_val_if_fail (event != NULL, FALSE);
2492
2493   tree_view = GTK_TREE_VIEW (widget);
2494
2495   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2496     return gtk_tree_view_button_release_drag_column (widget, event);
2497
2498   if (tree_view->priv->pressed_button == event->button)
2499     tree_view->priv->pressed_button = -1;
2500
2501   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2502     return gtk_tree_view_button_release_column_resize (widget, event);
2503
2504   if (tree_view->priv->button_pressed_node == NULL)
2505     return FALSE;
2506
2507   if (event->button == 1)
2508     {
2509       gtk_grab_remove (widget);
2510       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
2511           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2512         {
2513           GtkTreePath *path = NULL;
2514
2515           path = _gtk_tree_view_find_path (tree_view,
2516                                            tree_view->priv->button_pressed_tree,
2517                                            tree_view->priv->button_pressed_node);
2518           /* Actually activate the node */
2519           if (tree_view->priv->button_pressed_node->children == NULL)
2520             gtk_tree_view_real_expand_row (tree_view, path,
2521                                            tree_view->priv->button_pressed_tree,
2522                                            tree_view->priv->button_pressed_node,
2523                                            FALSE, TRUE);
2524           else
2525             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
2526                                              tree_view->priv->button_pressed_tree,
2527                                              tree_view->priv->button_pressed_node, TRUE);
2528           gtk_tree_path_free (path);
2529         }
2530
2531       tree_view->priv->button_pressed_tree = NULL;
2532       tree_view->priv->button_pressed_node = NULL;
2533     }
2534
2535   return TRUE;
2536 }
2537
2538
2539 /* GtkWidget::motion_event function set.
2540  */
2541
2542 static gboolean
2543 coords_are_over_arrow (GtkTreeView *tree_view,
2544                        GtkRBTree   *tree,
2545                        GtkRBNode   *node,
2546                        /* these are in window coords */
2547                        gint         x,
2548                        gint         y)
2549 {
2550   GdkRectangle arrow;
2551   gint x2;
2552
2553   if (!GTK_WIDGET_REALIZED (tree_view))
2554     return FALSE;
2555
2556   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
2557     return FALSE;
2558
2559   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
2560
2561   arrow.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2562
2563   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
2564
2565   arrow.width = x2 - arrow.x;
2566
2567   return (x >= arrow.x &&
2568           x < (arrow.x + arrow.width) &&
2569           y >= arrow.y &&
2570           y < (arrow.y + arrow.height));
2571 }
2572
2573 static void
2574 do_prelight (GtkTreeView *tree_view,
2575              GtkRBTree   *tree,
2576              GtkRBNode   *node,
2577              /* these are in tree_window coords */
2578              gint         x,
2579              gint         y)
2580 {
2581   if (tree_view->priv->prelight_tree == tree &&
2582       tree_view->priv->prelight_node == node)
2583     {
2584       /*  We are still on the same node,
2585           but we might need to take care of the arrow  */
2586
2587       if (tree && node)
2588         {
2589           gboolean over_arrow;
2590           gboolean flag_set;
2591
2592           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
2593           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
2594                                              GTK_TREE_VIEW_ARROW_PRELIT);
2595
2596           if (over_arrow != flag_set)
2597             {
2598               if (over_arrow)
2599                 GTK_TREE_VIEW_SET_FLAG (tree_view,
2600                                         GTK_TREE_VIEW_ARROW_PRELIT);
2601               else
2602                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
2603                                           GTK_TREE_VIEW_ARROW_PRELIT);
2604
2605               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
2606             }
2607         }
2608
2609       return;
2610     }
2611
2612   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
2613     {
2614       /*  Unprelight the old node and arrow  */
2615
2616       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
2617                              GTK_RBNODE_IS_PRELIT);
2618
2619       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2620         {
2621           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2622
2623           gtk_tree_view_draw_arrow (tree_view,
2624                                     tree_view->priv->prelight_tree,
2625                                     tree_view->priv->prelight_node,
2626                                     x,
2627                                     y);
2628         }
2629
2630       _gtk_tree_view_queue_draw_node (tree_view,
2631                                       tree_view->priv->prelight_tree,
2632                                       tree_view->priv->prelight_node,
2633                                       NULL);
2634     }
2635
2636
2637   /*  Set the new prelight values  */
2638
2639   tree_view->priv->prelight_node = node;
2640   tree_view->priv->prelight_tree = tree;
2641
2642   if (!node || !tree)
2643     return;
2644
2645   /*  Prelight the new node and arrow  */
2646
2647   if (coords_are_over_arrow (tree_view, tree, node, x, y))
2648     {
2649       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2650
2651       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
2652     }
2653
2654   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
2655
2656   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
2657 }
2658
2659 static void
2660 ensure_unprelighted (GtkTreeView *tree_view)
2661 {
2662   do_prelight (tree_view,
2663                NULL, NULL,
2664                -1000, -1000); /* coords not possibly over an arrow */
2665
2666   g_assert (tree_view->priv->prelight_node == NULL);
2667 }
2668
2669
2670
2671
2672 /* Our motion arrow is either a box (in the case of the original spot)
2673  * or an arrow.  It is expander_size wide.
2674  */
2675 /*
2676  * 11111111111111
2677  * 01111111111110
2678  * 00111111111100
2679  * 00011111111000
2680  * 00001111110000
2681  * 00000111100000
2682  * 00000111100000
2683  * 00000111100000
2684  * ~ ~ ~ ~ ~ ~ ~
2685  * 00000111100000
2686  * 00000111100000
2687  * 00000111100000
2688  * 00001111110000
2689  * 00011111111000
2690  * 00111111111100
2691  * 01111111111110
2692  * 11111111111111
2693  */
2694
2695 static void
2696 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
2697 {
2698   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
2699   GtkWidget *widget = GTK_WIDGET (tree_view);
2700   GdkBitmap *mask = NULL;
2701   gint x;
2702   gint y;
2703   gint width;
2704   gint height;
2705   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
2706   GdkWindowAttr attributes;
2707   guint attributes_mask;
2708
2709   if (!reorder ||
2710       reorder->left_column == tree_view->priv->drag_column ||
2711       reorder->right_column == tree_view->priv->drag_column)
2712     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2713   else if (reorder->left_column || reorder->right_column)
2714     {
2715       GdkRectangle visible_rect;
2716       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2717       if (reorder->left_column)
2718         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
2719       else
2720         x = reorder->right_column->button->allocation.x;
2721
2722       if (x < visible_rect.x)
2723         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
2724       else if (x > visible_rect.x + visible_rect.width)
2725         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
2726       else
2727         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
2728     }
2729
2730   /* We want to draw the rectangle over the initial location. */
2731   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2732     {
2733       GdkGC *gc;
2734       GdkColor col;
2735
2736       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2737         {
2738           if (tree_view->priv->drag_highlight_window)
2739             {
2740               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2741                                         NULL);
2742               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2743             }
2744
2745           attributes.window_type = GDK_WINDOW_CHILD;
2746           attributes.wclass = GDK_INPUT_OUTPUT;
2747           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2748           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2749           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2750           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2751           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
2752           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2753
2754           width = tree_view->priv->drag_column->button->allocation.width;
2755           height = tree_view->priv->drag_column->button->allocation.height;
2756           gdk_window_move_resize (tree_view->priv->drag_highlight_window,
2757                                   tree_view->priv->drag_column_x, 0, width, height);
2758
2759           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2760           gc = gdk_gc_new (mask);
2761           col.pixel = 1;
2762           gdk_gc_set_foreground (gc, &col);
2763           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2764           col.pixel = 0;
2765           gdk_gc_set_foreground(gc, &col);
2766           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
2767           g_object_unref (gc);
2768
2769           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2770                                          mask, 0, 0);
2771           if (mask) g_object_unref (mask);
2772           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2773         }
2774     }
2775   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
2776     {
2777       gint i, j = 1;
2778       GdkGC *gc;
2779       GdkColor col;
2780
2781       width = tree_view->priv->expander_size;
2782
2783       /* Get x, y, width, height of arrow */
2784       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
2785       if (reorder->left_column)
2786         {
2787           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
2788           height = reorder->left_column->button->allocation.height;
2789         }
2790       else
2791         {
2792           x += reorder->right_column->button->allocation.x - width/2;
2793           height = reorder->right_column->button->allocation.height;
2794         }
2795       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
2796       height += tree_view->priv->expander_size;
2797
2798       /* Create the new window */
2799       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
2800         {
2801           if (tree_view->priv->drag_highlight_window)
2802             {
2803               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2804                                         NULL);
2805               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2806             }
2807
2808           attributes.window_type = GDK_WINDOW_TEMP;
2809           attributes.wclass = GDK_INPUT_OUTPUT;
2810           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2811           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2812           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2813           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2814           attributes.width = width;
2815           attributes.height = height;
2816           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
2817                                                                    &attributes, attributes_mask);
2818           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2819
2820           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2821           gc = gdk_gc_new (mask);
2822           col.pixel = 1;
2823           gdk_gc_set_foreground (gc, &col);
2824           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2825
2826           /* Draw the 2 arrows as per above */
2827           col.pixel = 0;
2828           gdk_gc_set_foreground (gc, &col);
2829           for (i = 0; i < width; i ++)
2830             {
2831               if (i == (width/2 - 1))
2832                 continue;
2833               gdk_draw_line (mask, gc, i, j, i, height - j);
2834               if (i < (width/2 - 1))
2835                 j++;
2836               else
2837                 j--;
2838             }
2839           g_object_unref (gc);
2840           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2841                                          mask, 0, 0);
2842           if (mask) g_object_unref (mask);
2843         }
2844
2845       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
2846       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2847     }
2848   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
2849            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2850     {
2851       gint i, j = 1;
2852       GdkGC *gc;
2853       GdkColor col;
2854
2855       width = tree_view->priv->expander_size;
2856
2857       /* Get x, y, width, height of arrow */
2858       width = width/2; /* remember, the arrow only takes half the available width */
2859       gdk_window_get_origin (widget->window, &x, &y);
2860       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2861         x += widget->allocation.width - width;
2862
2863       if (reorder->left_column)
2864         height = reorder->left_column->button->allocation.height;
2865       else
2866         height = reorder->right_column->button->allocation.height;
2867
2868       y -= tree_view->priv->expander_size;
2869       height += 2*tree_view->priv->expander_size;
2870
2871       /* Create the new window */
2872       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
2873           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2874         {
2875           if (tree_view->priv->drag_highlight_window)
2876             {
2877               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2878                                         NULL);
2879               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2880             }
2881
2882           attributes.window_type = GDK_WINDOW_TEMP;
2883           attributes.wclass = GDK_INPUT_OUTPUT;
2884           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2885           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2886           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2887           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2888           attributes.width = width;
2889           attributes.height = height;
2890           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2891           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2892
2893           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2894           gc = gdk_gc_new (mask);
2895           col.pixel = 1;
2896           gdk_gc_set_foreground (gc, &col);
2897           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2898
2899           /* Draw the 2 arrows as per above */
2900           col.pixel = 0;
2901           gdk_gc_set_foreground (gc, &col);
2902           j = tree_view->priv->expander_size;
2903           for (i = 0; i < width; i ++)
2904             {
2905               gint k;
2906               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
2907                 k = width - i - 1;
2908               else
2909                 k = i;
2910               gdk_draw_line (mask, gc, k, j, k, height - j);
2911               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
2912               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
2913               j--;
2914             }
2915           g_object_unref (gc);
2916           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2917                                          mask, 0, 0);
2918           if (mask) g_object_unref (mask);
2919         }
2920
2921       tree_view->priv->drag_column_window_state = arrow_type;
2922       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2923    }
2924   else
2925     {
2926       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
2927       gdk_window_hide (tree_view->priv->drag_highlight_window);
2928       return;
2929     }
2930
2931   gdk_window_show (tree_view->priv->drag_highlight_window);
2932   gdk_window_raise (tree_view->priv->drag_highlight_window);
2933 }
2934
2935 static gboolean
2936 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
2937                                     GdkEventMotion *event)
2938 {
2939   gint x;
2940   gint new_width;
2941   GtkTreeViewColumn *column;
2942   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2943
2944   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
2945
2946   if (event->is_hint || event->window != widget->window)
2947     gtk_widget_get_pointer (widget, &x, NULL);
2948   else
2949     x = event->x;
2950
2951   if (tree_view->priv->hadjustment)
2952     x += tree_view->priv->hadjustment->value;
2953
2954   new_width = gtk_tree_view_new_column_width (tree_view,
2955                                               tree_view->priv->drag_pos, &x);
2956   if (x != tree_view->priv->x_drag &&
2957       (new_width != column->fixed_width));
2958     {
2959       column->resized_width = new_width;
2960       gtk_widget_queue_resize (widget);
2961     }
2962
2963   return FALSE;
2964 }
2965
2966
2967 static void
2968 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
2969 {
2970   GtkTreeViewColumnReorder *reorder = NULL;
2971   GList *list;
2972   gint mouse_x;
2973
2974   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
2975   for (list = tree_view->priv->column_drag_info; list; list = list->next)
2976     {
2977       reorder = (GtkTreeViewColumnReorder *) list->data;
2978       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
2979         break;
2980       reorder = NULL;
2981     }
2982
2983   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
2984       return;*/
2985
2986   tree_view->priv->cur_reorder = reorder;
2987   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
2988 }
2989
2990 static void
2991 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
2992 {
2993   GdkRectangle visible_rect;
2994   gint y;
2995   gint offset;
2996   gfloat value;
2997
2998   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
2999   y += tree_view->priv->dy;
3000
3001   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3002
3003   /* see if we are near the edge. */
3004   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3005   if (offset > 0)
3006     {
3007       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3008       if (offset < 0)
3009         return;
3010     }
3011
3012   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
3013                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
3014   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
3015 }
3016
3017 static gboolean
3018 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3019 {
3020   GdkRectangle visible_rect;
3021   gint x;
3022   gint offset;
3023   gfloat value;
3024
3025   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3026
3027   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3028
3029   /* See if we are near the edge. */
3030   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3031   if (offset > 0)
3032     {
3033       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3034       if (offset < 0)
3035         return TRUE;
3036     }
3037   offset = offset/3;
3038
3039   value = CLAMP (tree_view->priv->hadjustment->value + offset,
3040                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
3041   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
3042
3043   return TRUE;
3044
3045 }
3046
3047 static gboolean
3048 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3049                                   GdkEventMotion *event)
3050 {
3051   GtkTreeView *tree_view = (GtkTreeView *) widget;
3052   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3053   gint x, y;
3054
3055   /* Sanity Check */
3056   if ((column == NULL) ||
3057       (event->window != tree_view->priv->drag_window))
3058     return FALSE;
3059
3060   /* Handle moving the header */
3061   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3062   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3063              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3064   gdk_window_move (tree_view->priv->drag_window, x, y);
3065
3066   /* autoscroll, if needed */
3067   gtk_tree_view_horizontal_autoscroll (tree_view);
3068   /* Update the current reorder position and arrow; */
3069   gtk_tree_view_update_current_reorder (tree_view);
3070
3071   return TRUE;
3072 }
3073
3074 static gboolean
3075 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
3076                                  GdkEventMotion *event)
3077 {
3078   GtkTreeView *tree_view;
3079   GtkRBTree *tree;
3080   GtkRBNode *node;
3081   gint new_y;
3082
3083   tree_view = (GtkTreeView *) widget;
3084
3085   if (tree_view->priv->tree == NULL)
3086     return FALSE;
3087
3088   /* only check for an initiated drag when a button is pressed */
3089   if (tree_view->priv->pressed_button >= 0)
3090     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
3091
3092   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
3093   if (new_y < 0)
3094     new_y = 0;
3095
3096   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
3097
3098   /* If we are currently pressing down a button, we don't want to prelight anything else. */
3099   if ((tree_view->priv->button_pressed_node != NULL) &&
3100       (tree_view->priv->button_pressed_node != node))
3101     node = NULL;
3102
3103   do_prelight (tree_view, tree, node, event->x, event->y);
3104
3105   return TRUE;
3106 }
3107
3108 static gboolean
3109 gtk_tree_view_motion (GtkWidget      *widget,
3110                       GdkEventMotion *event)
3111 {
3112   GtkTreeView *tree_view;
3113
3114   tree_view = (GtkTreeView *) widget;
3115
3116   /* Resizing a column */
3117   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3118     return gtk_tree_view_motion_resize_column (widget, event);
3119
3120   /* Drag column */
3121   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3122     return gtk_tree_view_motion_drag_column (widget, event);
3123
3124   /* Sanity check it */
3125   if (event->window == tree_view->priv->bin_window)
3126     return gtk_tree_view_motion_bin_window (widget, event);
3127
3128   return FALSE;
3129 }
3130
3131 /* Warning: Very scary function.
3132  * Modify at your own risk
3133  *
3134  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
3135  * FIXME: It's not...
3136  */
3137 static gboolean
3138 gtk_tree_view_bin_expose (GtkWidget      *widget,
3139                           GdkEventExpose *event)
3140 {
3141   GtkTreeView *tree_view;
3142   GtkTreePath *path;
3143   GtkRBTree *tree;
3144   GList *list;
3145   GtkRBNode *node;
3146   GtkRBNode *cursor = NULL;
3147   GtkRBTree *cursor_tree = NULL;
3148   GtkRBNode *drag_highlight = NULL;
3149   GtkRBTree *drag_highlight_tree = NULL;
3150   GtkTreeIter iter;
3151   gint new_y;
3152   gint y_offset, x_offset, cell_offset;
3153   gint max_height;
3154   gint depth;
3155   GdkRectangle background_area;
3156   GdkRectangle cell_area;
3157   guint flags;
3158   gint highlight_x;
3159   gint bin_window_width;
3160   GtkTreePath *cursor_path;
3161   GtkTreePath *drag_dest_path;
3162   GList *last_column;
3163   gint vertical_separator;
3164   gint horizontal_separator;
3165   gint focus_line_width;
3166   gboolean allow_rules;
3167   gboolean has_special_cell;
3168   gboolean rtl;
3169   gint n_visible_columns;
3170
3171   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3172
3173   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
3174
3175   tree_view = GTK_TREE_VIEW (widget);
3176
3177   gtk_widget_style_get (widget,
3178                         "horizontal_separator", &horizontal_separator,
3179                         "vertical_separator", &vertical_separator,
3180                         "allow_rules", &allow_rules,
3181                         "focus-line-width", &focus_line_width,
3182                         NULL);
3183
3184   if (tree_view->priv->tree == NULL)
3185     return TRUE;
3186
3187   /* clip event->area to the visible area */
3188   if (event->area.height < 0)
3189     return TRUE;
3190
3191   validate_visible_area (tree_view);
3192
3193   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
3194
3195   if (new_y < 0)
3196     new_y = 0;
3197   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
3198
3199   if (node == NULL)
3200     return TRUE;
3201
3202   /* find the path for the node */
3203   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
3204                                    tree,
3205                                    node);
3206   gtk_tree_model_get_iter (tree_view->priv->model,
3207                            &iter,
3208                            path);
3209   depth = gtk_tree_path_get_depth (path);
3210   gtk_tree_path_free (path);
3211
3212   cursor_path = NULL;
3213   drag_dest_path = NULL;
3214
3215   if (tree_view->priv->cursor)
3216     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
3217
3218   if (cursor_path)
3219     _gtk_tree_view_find_node (tree_view, cursor_path,
3220                               &cursor_tree, &cursor);
3221
3222   if (tree_view->priv->drag_dest_row)
3223     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
3224
3225   if (drag_dest_path)
3226     _gtk_tree_view_find_node (tree_view, drag_dest_path,
3227                               &drag_highlight_tree, &drag_highlight);
3228
3229   gdk_drawable_get_size (tree_view->priv->bin_window,
3230                          &bin_window_width, NULL);
3231
3232
3233   n_visible_columns = 0;
3234   for (list = tree_view->priv->columns; list; list = list->next)
3235     {
3236       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
3237         continue;
3238       n_visible_columns ++;
3239     }
3240
3241   /* Find the last column */
3242   for (last_column = rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns);
3243        last_column &&
3244          !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
3245          GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
3246        last_column = rtl ? last_column->next : last_column->prev)
3247     ;
3248
3249   /* Actually process the expose event.  To do this, we want to
3250    * start at the first node of the event, and walk the tree in
3251    * order, drawing each successive node.
3252    */
3253
3254   do
3255     {
3256       gboolean parity;
3257
3258       max_height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
3259
3260       x_offset = -event->area.x;
3261       cell_offset = 0;
3262       highlight_x = 0; /* should match x coord of first cell */
3263
3264       background_area.y = y_offset + event->area.y;
3265       background_area.height = max_height;
3266
3267       flags = 0;
3268
3269       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
3270         flags |= GTK_CELL_RENDERER_PRELIT;
3271
3272       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3273         flags |= GTK_CELL_RENDERER_SELECTED;
3274
3275       parity = _gtk_rbtree_node_find_parity (tree, node);
3276
3277       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
3278
3279       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
3280            list;
3281            list = (rtl ? list->prev : list->next))
3282         {
3283           GtkTreeViewColumn *column = list->data;
3284           const gchar *detail = NULL;
3285           GtkStateType state;
3286
3287           if (!column->visible)
3288             continue;
3289
3290           if (cell_offset > event->area.x + event->area.width ||
3291               cell_offset + column->width < event->area.x)
3292             {
3293               cell_offset += column->width;
3294               continue;
3295             }
3296
3297           if (column->show_sort_indicator)
3298             flags |= GTK_CELL_RENDERER_SORTED;
3299           else
3300             flags &= ~GTK_CELL_RENDERER_SORTED;
3301
3302           if (cursor == node)
3303             flags |= GTK_CELL_RENDERER_FOCUSED;
3304           else
3305             flags &= ~GTK_CELL_RENDERER_FOCUSED;
3306
3307           background_area.x = cell_offset;
3308           background_area.width = column->width;
3309
3310           cell_area = background_area;
3311           cell_area.y += vertical_separator / 2;
3312           cell_area.x += horizontal_separator / 2;
3313           cell_area.height -= vertical_separator;
3314           cell_area.width -= horizontal_separator;
3315
3316           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
3317             {
3318               cell_offset += column->width;
3319               continue;
3320             }
3321
3322           gtk_tree_view_column_cell_set_cell_data (column,
3323                                                    tree_view->priv->model,
3324                                                    &iter,
3325                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3326                                                    node->children?TRUE:FALSE);
3327
3328           /* Select the detail for drawing the cell.  relevant
3329            * factors are parity, sortedness, and whether to
3330            * display rules.
3331            */
3332           if (allow_rules && tree_view->priv->has_rules)
3333             {
3334               if ((flags & GTK_CELL_RENDERER_SORTED) &&
3335                   n_visible_columns >= 3)
3336                 {
3337                   if (parity)
3338                     detail = "cell_odd_ruled_sorted";
3339                   else
3340                     detail = "cell_even_ruled_sorted";
3341                 }
3342               else
3343                 {
3344                   if (parity)
3345                     detail = "cell_odd_ruled";
3346                   else
3347                     detail = "cell_even_ruled";
3348                 }
3349             }
3350           else
3351             {
3352               if ((flags & GTK_CELL_RENDERER_SORTED) &&
3353                   n_visible_columns >= 3)
3354                 {
3355                   if (parity)
3356                     detail = "cell_odd_sorted";
3357                   else
3358                     detail = "cell_even_sorted";
3359                 }
3360               else
3361                 {
3362                   if (parity)
3363                     detail = "cell_odd";
3364                   else
3365                     detail = "cell_even";
3366                 }
3367             }
3368
3369           g_assert (detail);
3370
3371           if (flags & GTK_CELL_RENDERER_SELECTED)
3372             state = GTK_STATE_SELECTED;
3373           else
3374             state = GTK_STATE_NORMAL;
3375
3376           /* Draw background */
3377           gtk_paint_flat_box (widget->style,
3378                               event->window,
3379                               state,
3380                               GTK_SHADOW_NONE,
3381                               &event->area,
3382                               widget,
3383                               detail,
3384                               background_area.x,
3385                               background_area.y,
3386                               background_area.width,
3387                               background_area.height);
3388
3389           if (gtk_tree_view_is_expander_column (tree_view, column) &&
3390               TREE_VIEW_DRAW_EXPANDERS(tree_view))
3391             {
3392               if (!rtl)
3393                 cell_area.x += depth * tree_view->priv->expander_size;
3394               cell_area.width -= depth * tree_view->priv->expander_size;
3395
3396               /* If we have an expander column, the highlight underline
3397                * starts with that column, so that it indicates which
3398                * level of the tree we're dropping at.
3399                */
3400               highlight_x = cell_area.x;
3401               _gtk_tree_view_column_cell_render (column,
3402                                                  event->window,
3403                                                  &background_area,
3404                                                  &cell_area,
3405                                                  &event->area,
3406                                                  flags);
3407               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
3408                 {
3409                   gint x, y;
3410                   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
3411                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
3412                                             tree,
3413                                             node,
3414                                             x, y);
3415                 }
3416             }
3417           else
3418             {
3419               _gtk_tree_view_column_cell_render (column,
3420                                                  event->window,
3421                                                  &background_area,
3422                                                  &cell_area,
3423                                                  &event->area,
3424                                                  flags);
3425             }
3426           if (node == cursor && has_special_cell &&
3427               ((column == tree_view->priv->focus_column &&
3428                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
3429                 GTK_WIDGET_HAS_FOCUS (widget)) ||
3430                (column == tree_view->priv->edited_column)))
3431             {
3432               _gtk_tree_view_column_cell_draw_focus (column,
3433                                                      event->window,
3434                                                      &background_area,
3435                                                      &cell_area,
3436                                                      &event->area,
3437                                                      flags);
3438             }
3439           cell_offset += column->width;
3440         }
3441
3442       if (node == drag_highlight)
3443         {
3444           /* Draw indicator for the drop
3445            */
3446           gint highlight_y = -1;
3447           GtkRBTree *tree = NULL;
3448           GtkRBNode *node = NULL;
3449           gint width;
3450           gint focus_line_width;
3451
3452           switch (tree_view->priv->drag_dest_pos)
3453             {
3454             case GTK_TREE_VIEW_DROP_BEFORE:
3455               highlight_y = background_area.y - 1;
3456               if (highlight_y < 0)
3457                       highlight_y = 0;
3458               break;
3459
3460             case GTK_TREE_VIEW_DROP_AFTER:
3461               highlight_y = background_area.y + background_area.height - 1;
3462               break;
3463
3464             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
3465             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
3466               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
3467
3468               if (tree == NULL)
3469                 break;
3470               gdk_drawable_get_size (tree_view->priv->bin_window,
3471                                      &width, NULL);
3472               gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL);
3473               gtk_paint_focus (widget->style,
3474                                tree_view->priv->bin_window,
3475                                GTK_WIDGET_STATE (widget),
3476                                NULL,
3477                                widget,
3478                                "treeview-drop-indicator",
3479                                0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
3480                                - focus_line_width / 2,
3481                                width, MAX(BACKGROUND_HEIGHT (node),
3482                                           tree_view->priv->expander_size)
3483                                - focus_line_width + 1);
3484               break;
3485             }
3486
3487           if (highlight_y >= 0)
3488             {
3489               gdk_draw_line (event->window,
3490                              widget->style->black_gc,
3491                              highlight_x,
3492                              highlight_y,
3493                              bin_window_width - highlight_x,
3494                              highlight_y);
3495             }
3496         }
3497
3498       /* draw the big row-spanning focus rectangle, if needed */
3499       if (!has_special_cell && node == cursor &&
3500           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
3501           GTK_WIDGET_HAS_FOCUS (widget))
3502         {
3503           gint width;
3504           GtkStateType focus_rect_state;
3505
3506           focus_rect_state =
3507             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
3508             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
3509              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
3510               GTK_STATE_NORMAL));
3511
3512           gdk_drawable_get_size (tree_view->priv->bin_window,
3513                                  &width, NULL);
3514           gtk_paint_focus (widget->style,
3515                            tree_view->priv->bin_window,
3516                            focus_rect_state,
3517                            NULL,
3518                            widget,
3519                            "treeview",
3520                            0,
3521                            BACKGROUND_FIRST_PIXEL (tree_view, tree, node),
3522                            width,
3523                            MAX (BACKGROUND_HEIGHT (node),
3524                                 tree_view->priv->expander_size));
3525         }
3526
3527       y_offset += max_height;
3528       if (node->children)
3529         {
3530           GtkTreeIter parent = iter;
3531           gboolean has_child;
3532
3533           tree = node->children;
3534           node = tree->root;
3535
3536           g_assert (node != tree->nil);
3537
3538           while (node->left != tree->nil)
3539             node = node->left;
3540           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3541                                                     &iter,
3542                                                     &parent);
3543           depth++;
3544
3545           /* Sanity Check! */
3546           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
3547         }
3548       else
3549         {
3550           gboolean done = FALSE;
3551           do
3552             {
3553               node = _gtk_rbtree_next (tree, node);
3554               if (node != NULL)
3555                 {
3556                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3557                   done = TRUE;
3558
3559                   /* Sanity Check! */
3560                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
3561                 }
3562               else
3563                 {
3564                   GtkTreeIter parent_iter = iter;
3565                   gboolean has_parent;
3566
3567                   node = tree->parent_node;
3568                   tree = tree->parent_tree;
3569                   if (tree == NULL)
3570                     /* we should go to done to free some memory */
3571                     goto done;
3572                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3573                                                            &iter,
3574                                                            &parent_iter);
3575                   depth--;
3576
3577                   /* Sanity check */
3578                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
3579                 }
3580             }
3581           while (!done);
3582         }
3583     }
3584   while (y_offset < event->area.height);
3585
3586  done:
3587   if (cursor_path)
3588     gtk_tree_path_free (cursor_path);
3589
3590   if (drag_dest_path)
3591     gtk_tree_path_free (drag_dest_path);
3592
3593   return FALSE;
3594 }
3595
3596 static gboolean
3597 gtk_tree_view_expose (GtkWidget      *widget,
3598                       GdkEventExpose *event)
3599 {
3600   GtkTreeView *tree_view;
3601
3602   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3603
3604   tree_view = GTK_TREE_VIEW (widget);
3605
3606   if (event->window == tree_view->priv->bin_window)
3607     return gtk_tree_view_bin_expose (widget, event);
3608   else if (event->window == tree_view->priv->header_window)
3609     {
3610       GList *list;
3611
3612       for (list = tree_view->priv->columns; list != NULL; list = list->next)
3613         {
3614           GtkTreeViewColumn *column = list->data;
3615
3616           if (column == tree_view->priv->drag_column)
3617             continue;
3618
3619           if (column->visible)
3620             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3621                                             column->button,
3622                                             event);
3623         }
3624     }
3625   else if (event->window == tree_view->priv->drag_window)
3626     {
3627       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3628                                       tree_view->priv->drag_column->button,
3629                                       event);
3630     }
3631   return TRUE;
3632 }
3633
3634 enum
3635 {
3636   DROP_HOME,
3637   DROP_RIGHT,
3638   DROP_LEFT,
3639   DROP_END
3640 };
3641
3642 /* returns 0x1 when no column has been found -- yes it's hackish */
3643 static GtkTreeViewColumn *
3644 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
3645                                GtkTreeViewColumn *column,
3646                                gint               drop_position)
3647 {
3648   GtkTreeViewColumn *left_column = NULL;
3649   GtkTreeViewColumn *cur_column = NULL;
3650   GList *tmp_list;
3651
3652   if (!column->reorderable)
3653     return (GtkTreeViewColumn *)0x1;
3654
3655   switch (drop_position)
3656     {
3657       case DROP_HOME:
3658         /* find first column where we can drop */
3659         tmp_list = tree_view->priv->columns;
3660         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3661           return (GtkTreeViewColumn *)0x1;
3662
3663         while (tmp_list)
3664           {
3665             g_assert (tmp_list);
3666
3667             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3668             tmp_list = tmp_list->next;
3669
3670             if (left_column && left_column->visible == FALSE)
3671               continue;
3672
3673             if (!tree_view->priv->column_drop_func)
3674               return left_column;
3675
3676             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3677               {
3678                 left_column = cur_column;
3679                 continue;
3680               }
3681
3682             return cur_column;
3683           }
3684
3685         if (!tree_view->priv->column_drop_func)
3686           return left_column;
3687
3688         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3689           return left_column;
3690         else
3691           return (GtkTreeViewColumn *)0x1;
3692         break;
3693
3694       case DROP_RIGHT:
3695         /* find first column after column where we can drop */
3696         tmp_list = tree_view->priv->columns;
3697
3698         for (; tmp_list; tmp_list = tmp_list->next)
3699           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3700             break;
3701
3702         if (!tmp_list || !tmp_list->next)
3703           return (GtkTreeViewColumn *)0x1;
3704
3705         tmp_list = tmp_list->next;
3706         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3707         tmp_list = tmp_list->next;
3708
3709         while (tmp_list)
3710           {
3711             g_assert (tmp_list);
3712
3713             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3714             tmp_list = tmp_list->next;
3715
3716             if (left_column && left_column->visible == FALSE)
3717               {
3718                 left_column = cur_column;
3719                 if (tmp_list)
3720                   tmp_list = tmp_list->next;
3721                 continue;
3722               }
3723
3724             if (!tree_view->priv->column_drop_func)
3725               return left_column;
3726
3727             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3728               {
3729                 left_column = cur_column;
3730                 continue;
3731               }
3732
3733             return cur_column;
3734           }
3735
3736         if (!tree_view->priv->column_drop_func)
3737           return left_column;
3738
3739         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3740           return left_column;
3741         else
3742           return (GtkTreeViewColumn *)0x1;
3743         break;
3744
3745       case DROP_LEFT:
3746         /* find first column before column where we can drop */
3747         tmp_list = tree_view->priv->columns;
3748
3749         for (; tmp_list; tmp_list = tmp_list->next)
3750           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3751             break;
3752
3753         if (!tmp_list || !tmp_list->prev)
3754           return (GtkTreeViewColumn *)0x1;
3755
3756         tmp_list = tmp_list->prev;
3757         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3758         tmp_list = tmp_list->prev;
3759
3760         while (tmp_list)
3761           {
3762             g_assert (tmp_list);
3763
3764             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3765
3766             if (left_column && !left_column->visible)
3767               {
3768                 /*if (!tmp_list->prev)
3769                   return (GtkTreeViewColumn *)0x1;
3770                   */
3771 /*
3772                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
3773                 tmp_list = tmp_list->prev->prev;
3774                 continue;*/
3775
3776                 cur_column = left_column;
3777                 if (tmp_list)
3778                   tmp_list = tmp_list->prev;
3779                 continue;
3780               }
3781
3782             if (!tree_view->priv->column_drop_func)
3783               return left_column;
3784
3785             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3786               return left_column;
3787
3788             cur_column = left_column;
3789             tmp_list = tmp_list->prev;
3790           }
3791
3792         if (!tree_view->priv->column_drop_func)
3793           return NULL;
3794
3795         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3796           return NULL;
3797         else
3798           return (GtkTreeViewColumn *)0x1;
3799         break;
3800
3801       case DROP_END:
3802         /* same as DROP_HOME case, but doing it backwards */
3803         tmp_list = g_list_last (tree_view->priv->columns);
3804         cur_column = NULL;
3805
3806         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3807           return (GtkTreeViewColumn *)0x1;
3808
3809         while (tmp_list)
3810           {
3811             g_assert (tmp_list);
3812
3813             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3814
3815             if (left_column && !left_column->visible)
3816               {
3817                 cur_column = left_column;
3818                 tmp_list = tmp_list->prev;
3819               }
3820
3821             if (!tree_view->priv->column_drop_func)
3822               return left_column;
3823
3824             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3825               return left_column;
3826
3827             cur_column = left_column;
3828             tmp_list = tmp_list->prev;
3829           }
3830
3831         if (!tree_view->priv->column_drop_func)
3832           return NULL;
3833
3834         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3835           return NULL;
3836         else
3837           return (GtkTreeViewColumn *)0x1;
3838         break;
3839     }
3840
3841   return (GtkTreeViewColumn *)0x1;
3842 }
3843
3844 static gboolean
3845 gtk_tree_view_key_press (GtkWidget   *widget,
3846                          GdkEventKey *event)
3847 {
3848   GtkTreeView *tree_view = (GtkTreeView *) widget;
3849   GList *list;
3850   gboolean rtl;
3851
3852   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
3853
3854   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3855     {
3856       if (event->keyval == GDK_Escape)
3857         {
3858           tree_view->priv->cur_reorder = NULL;
3859           gtk_tree_view_button_release_drag_column (widget, NULL);
3860         }
3861       return TRUE;
3862     }
3863
3864   if (tree_view->priv->columns && (event->state & GDK_SHIFT_MASK)
3865       && (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
3866           || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
3867     {
3868       list = tree_view->priv->columns;
3869       while (list)
3870         {
3871           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3872           if (GTK_WIDGET_HAS_FOCUS (column->button))
3873             {
3874               if (!column->resizable)
3875                 return TRUE;
3876
3877               if (event->keyval == GDK_Left || event->keyval == GDK_KP_Left)
3878                 {
3879                   column->resized_width = MAX (column->resized_width,
3880                                                column->width);
3881                   column->resized_width -= 2;
3882                   if (column->resized_width < 0)
3883                     column->resized_width = 0;
3884
3885                   if (column->min_width == -1)
3886                     column->resized_width = MAX (column->button->requisition.width, column->resized_width);
3887                   else
3888                     column->resized_width = MAX (column->min_width, column->resized_width);
3889
3890                   if (column->max_width != -1)
3891                     column->resized_width = MIN (column->resized_width, column->max_width);
3892
3893                   column->use_resized_width = TRUE;
3894                   gtk_widget_queue_resize (widget);
3895                   return TRUE;
3896                 }
3897               else if (event->keyval == GDK_Right
3898                        || event->keyval == GDK_KP_Right)
3899                 {
3900                   column->resized_width = MAX (column->resized_width,
3901                                                column->width);
3902                   column->resized_width += 2;
3903
3904                   if (column->max_width != -1)
3905                     column->resized_width = MIN (column->resized_width, column->max_width);
3906
3907                   column->use_resized_width = TRUE;
3908                   gtk_widget_queue_resize (widget);
3909                   return TRUE;
3910                 }
3911             }
3912           list = list->next;
3913         }
3914     }
3915
3916   if (tree_view->priv->columns && (event->state & GDK_CONTROL_MASK) &&
3917       (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
3918        || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
3919        || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
3920        || event->keyval == GDK_End || event->keyval == GDK_KP_End))
3921     {
3922       list = tree_view->priv->columns;
3923       while (list)
3924         {
3925           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3926           if (GTK_WIDGET_HAS_FOCUS (column->button))
3927             {
3928               if (event->keyval == (rtl ? GDK_Right : GDK_Left)
3929                   || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
3930                 {
3931                   GtkTreeViewColumn *col;
3932                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
3933                   if (col != (GtkTreeViewColumn *)0x1)
3934                     gtk_tree_view_move_column_after (tree_view, column, col);
3935                   return TRUE;
3936                 }
3937               else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
3938                        || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
3939                 {
3940                   GtkTreeViewColumn *col;
3941                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
3942                   if (col != (GtkTreeViewColumn *)0x1)
3943                     gtk_tree_view_move_column_after (tree_view, column, col);
3944                   return TRUE;
3945                 }
3946               else if (event->keyval == GDK_Home
3947                        || event->keyval == GDK_KP_Home)
3948                 {
3949                   GtkTreeViewColumn *col;
3950                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
3951                   if (col != (GtkTreeViewColumn *)0x1)
3952                     gtk_tree_view_move_column_after (tree_view, column, col);
3953                   return TRUE;
3954                 }
3955               else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
3956                 {
3957                   GtkTreeViewColumn *col;
3958                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
3959                   if (col != (GtkTreeViewColumn *)0x1)
3960                     gtk_tree_view_move_column_after (tree_view, column, col);
3961                   return TRUE;
3962                 }
3963             }
3964           list = list->next;
3965         }
3966     }
3967
3968   if (tree_view->priv->columns &&
3969       GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) &&
3970       (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
3971        || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
3972     {
3973       gint width = 0;
3974       list = tree_view->priv->columns;
3975       while (list)
3976         {
3977           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3978           if (GTK_WIDGET_HAS_FOCUS (column->button))
3979             {
3980               if ((event->keyval == (rtl ? GDK_Right : GDK_Left)
3981                    || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
3982                   && list->prev)
3983                 {
3984                   GList *tmp;
3985
3986                   for (tmp = list->prev; tmp; tmp = tmp->prev)
3987                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3988                       break;
3989
3990                   if (!tmp)
3991                     return FALSE;
3992
3993                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3994                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3995                   width -= tree_view->priv->focus_column->width;
3996                   gtk_adjustment_set_value (tree_view->priv->hadjustment, CLAMP (width, tree_view->priv->hadjustment->lower, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size));
3997                   return TRUE;
3998                 }
3999               else if ((event->keyval == (rtl ? GDK_Left : GDK_Right)
4000                         || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
4001                        && list->next)
4002                 {
4003                   GList *tmp;
4004
4005                   for (tmp = list->next; tmp; tmp = tmp->next)
4006                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
4007                       break;
4008
4009                   if (!tmp)
4010                     return FALSE;
4011
4012                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
4013
4014                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
4015                   width += tree_view->priv->focus_column->width;
4016                   gtk_adjustment_set_value (tree_view->priv->hadjustment, CLAMP (width, tree_view->priv->hadjustment->lower, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size));
4017                   return TRUE;
4018                 }
4019             }
4020           width += GTK_TREE_VIEW_COLUMN (list->data)->width;
4021           list = list->next;
4022         }
4023     }
4024
4025   return (* GTK_WIDGET_CLASS (parent_class)->key_press_event) (widget, event);
4026 }
4027
4028 /* FIXME Is this function necessary? Can I get an enter_notify event
4029  * w/o either an expose event or a mouse motion event?
4030  */
4031 static gboolean
4032 gtk_tree_view_enter_notify (GtkWidget        *widget,
4033                             GdkEventCrossing *event)
4034 {
4035   GtkTreeView *tree_view;
4036   GtkRBTree *tree;
4037   GtkRBNode *node;
4038   gint new_y;
4039
4040   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
4041
4042   tree_view = GTK_TREE_VIEW (widget);
4043
4044   /* Sanity check it */
4045   if (event->window != tree_view->priv->bin_window)
4046     return FALSE;
4047
4048   if (tree_view->priv->tree == NULL)
4049     return FALSE;
4050
4051   if ((tree_view->priv->button_pressed_node != NULL) &&
4052       (tree_view->priv->button_pressed_node != node))
4053     return TRUE;
4054
4055   /* find the node internally */
4056   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4057   if (new_y < 0)
4058     new_y = 0;
4059   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4060
4061   do_prelight (tree_view, tree, node, event->x, event->y);
4062
4063   return TRUE;
4064 }
4065
4066 static gboolean
4067 gtk_tree_view_leave_notify (GtkWidget        *widget,
4068                             GdkEventCrossing *event)
4069 {
4070   GtkTreeView *tree_view;
4071
4072   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
4073
4074   if (event->mode == GDK_CROSSING_GRAB)
4075     return TRUE;
4076   tree_view = GTK_TREE_VIEW (widget);
4077
4078   if (tree_view->priv->prelight_node)
4079     _gtk_tree_view_queue_draw_node (tree_view,
4080                                    tree_view->priv->prelight_tree,
4081                                    tree_view->priv->prelight_node,
4082                                    NULL);
4083
4084   ensure_unprelighted (tree_view);
4085
4086   return TRUE;
4087 }
4088
4089
4090 static gint
4091 gtk_tree_view_focus_out (GtkWidget     *widget,
4092                          GdkEventFocus *event)
4093 {
4094   GtkWidget   *search_dialog;
4095
4096   gtk_widget_queue_draw (widget);
4097
4098   /* destroy interactive search dialog */
4099   search_dialog = g_object_get_data (G_OBJECT (widget),
4100                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
4101   if (search_dialog)
4102     gtk_tree_view_search_dialog_destroy (search_dialog, GTK_TREE_VIEW (widget));
4103
4104   return FALSE;
4105 }
4106
4107
4108 /* Incremental Reflow
4109  */
4110
4111 /* Returns TRUE if it updated the size
4112  */
4113 static gboolean
4114 validate_row (GtkTreeView *tree_view,
4115               GtkRBTree   *tree,
4116               GtkRBNode   *node,
4117               GtkTreeIter *iter,
4118               GtkTreePath *path)
4119 {
4120   GtkTreeViewColumn *column;
4121   GList *list;
4122   gint height = 0;
4123   gint horizontal_separator;
4124   gint depth = gtk_tree_path_get_depth (path);
4125   gboolean retval = FALSE;
4126
4127   /* double check the row needs validating */
4128   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
4129       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4130     return FALSE;
4131
4132   gtk_widget_style_get (GTK_WIDGET (tree_view),
4133                         "horizontal_separator", &horizontal_separator,
4134                         NULL);
4135
4136   for (list = tree_view->priv->columns; list; list = list->next)
4137     {
4138       gint tmp_width;
4139       gint tmp_height;
4140
4141       column = list->data;
4142
4143       if (! column->visible)
4144         continue;
4145
4146       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
4147         continue;
4148
4149       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
4150                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4151                                                node->children?TRUE:FALSE);
4152       gtk_tree_view_column_cell_get_size (column,
4153                                           NULL, NULL, NULL,
4154                                           &tmp_width, &tmp_height);
4155
4156       height = MAX (height, tmp_height);
4157       height = MAX (height, tree_view->priv->expander_size);
4158
4159       if (gtk_tree_view_is_expander_column (tree_view, column) && TREE_VIEW_DRAW_EXPANDERS (tree_view))
4160         {
4161           tmp_width = tmp_width + horizontal_separator + depth * (tree_view->priv->expander_size);
4162         }
4163       else
4164         tmp_width = tmp_width + horizontal_separator;
4165
4166       if (tmp_width > column->requested_width)
4167         {
4168           retval = TRUE;
4169           column->requested_width = tmp_width;
4170         }
4171     }
4172
4173   if (height != GTK_RBNODE_GET_HEIGHT (node))
4174     {
4175       retval = TRUE;
4176       _gtk_rbtree_node_set_height (tree, node, height);
4177     }
4178   _gtk_rbtree_node_mark_valid (tree, node);
4179
4180   return retval;
4181 }
4182
4183
4184 static void
4185 validate_visible_area (GtkTreeView *tree_view)
4186 {
4187   GtkTreePath *path = NULL;
4188   GtkTreePath *above_path = NULL;
4189   GtkTreeIter iter;
4190   GtkRBTree *tree = NULL;
4191   GtkRBNode *node = NULL;
4192   gboolean need_redraw = FALSE;
4193   gboolean size_changed = FALSE;
4194   gboolean update_dy = FALSE;
4195   gint total_height;
4196   gint area_above = 0;
4197   gint area_below = 0;
4198
4199   if (tree_view->priv->tree == NULL)
4200     return;
4201
4202   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
4203       tree_view->priv->scroll_to_path == NULL)
4204     return;
4205
4206   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
4207
4208   if (total_height == 0)
4209     return;
4210
4211   /* First, we check to see if we need to scroll anywhere
4212    */
4213   if (tree_view->priv->scroll_to_path)
4214     {
4215       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
4216       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
4217         {
4218           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
4219           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4220               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4221             {
4222               need_redraw = TRUE;
4223               if (validate_row (tree_view, tree, node, &iter, path))
4224                 size_changed = TRUE;
4225             }
4226
4227           if (tree_view->priv->scroll_to_use_align)
4228             {
4229               gint height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
4230               area_above = (total_height - height) *
4231                 tree_view->priv->scroll_to_row_align;
4232               area_below = total_height - area_above - height;
4233               area_above = MAX (area_above, 0);
4234               area_below = MAX (area_below, 0);
4235             }
4236           else
4237             {
4238               /* two cases:
4239                * 1) row not visible
4240                * 2) row visible
4241                */
4242               gint dy;
4243               gint height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
4244
4245               dy = _gtk_rbtree_node_find_offset (tree, node);
4246
4247               if (dy >= tree_view->priv->vadjustment->value &&
4248                   dy < (tree_view->priv->vadjustment->value
4249                         + tree_view->priv->vadjustment->page_size))
4250                 {
4251                   /* row visible: keep the row at the same position */
4252                   area_above = dy - tree_view->priv->vadjustment->value;
4253                   area_below = (tree_view->priv->vadjustment->value +
4254                                 tree_view->priv->vadjustment->page_size)
4255                                - dy - height;
4256                 }
4257               else
4258                 {
4259                   /* row not visible */
4260                   update_dy = TRUE;
4261
4262                   if (dy >= 0 && dy <= tree_view->priv->vadjustment->page_size)
4263                     {
4264                       /* row at the beginning -- fixed */
4265                       area_above = dy;
4266                       area_below = tree_view->priv->vadjustment->page_size
4267                                    - area_above - height;
4268                     }
4269                   else if (dy >= (tree_view->priv->vadjustment->upper -
4270                                   tree_view->priv->vadjustment->page_size)
4271                            && dy <= tree_view->priv->vadjustment->upper)
4272                     {
4273                       /* row at the end -- fixed */
4274                       area_above = dy - (tree_view->priv->vadjustment->upper -
4275                                    tree_view->priv->vadjustment->page_size);
4276                       area_below = tree_view->priv->vadjustment->page_size -
4277                                    area_above - height;
4278
4279                       if (area_below < 0)
4280                         {
4281                           area_above += area_below;
4282                           area_below = 0;
4283                         }
4284                     }
4285                   else
4286                     {
4287                       /* row somewhere in the middle, bring it to the top
4288                        * of the view
4289                        */
4290                       area_above = 0;
4291                       area_below = total_height - height;
4292                     }
4293                 }
4294             }
4295         }
4296       else
4297         /* the scroll to isn't valid; ignore it.
4298          */
4299         {
4300           if (tree_view->priv->scroll_to_path && !path)
4301             {
4302               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
4303               tree_view->priv->scroll_to_path = NULL;
4304             }
4305           if (path)
4306             gtk_tree_path_free (path);
4307           path = NULL;
4308         }
4309     }
4310
4311   /* We didn't have a scroll_to set, so we just handle things normally
4312    */
4313   if (path == NULL)
4314     {
4315       gint offset;
4316
4317       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
4318                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
4319                                         &tree, &node);
4320       if (node == NULL)
4321         {
4322           /* In this case, nothing has been validated */
4323           path = gtk_tree_path_new_first ();
4324           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
4325         }
4326       else
4327         {
4328           path = _gtk_tree_view_find_path (tree_view, tree, node);
4329           total_height += offset;
4330         }
4331
4332       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
4333
4334       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4335           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4336         {
4337           need_redraw = TRUE;
4338           if (validate_row (tree_view, tree, node, &iter, path))
4339             size_changed = TRUE;
4340         }
4341       area_above = 0;
4342       area_below = total_height - MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
4343     }
4344
4345   above_path = gtk_tree_path_copy (path);
4346
4347   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
4348    * backwards is much slower then forward, as there is no iter_prev function.
4349    * We go forwards first in case we run out of tree.  Then we go backwards to
4350    * fill out the top.
4351    */
4352   while (node && area_below > 0)
4353     {
4354       gint new_height;
4355
4356       if (node->children)
4357         {
4358           GtkTreeIter parent = iter;
4359           gboolean has_child;
4360
4361           tree = node->children;
4362           node = tree->root;
4363
4364           g_assert (node != tree->nil);
4365
4366           while (node->left != tree->nil)
4367             node = node->left;
4368           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4369                                                     &iter,
4370                                                     &parent);
4371           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
4372           gtk_tree_path_down (path);
4373         }
4374       else
4375         {
4376           gboolean done = FALSE;
4377           do
4378             {
4379               node = _gtk_rbtree_next (tree, node);
4380               if (node != NULL)
4381                 {
4382                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4383                   done = TRUE;
4384                   gtk_tree_path_next (path);
4385
4386                   /* Sanity Check! */
4387                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
4388                 }
4389               else
4390                 {
4391                   GtkTreeIter parent_iter = iter;
4392                   gboolean has_parent;
4393
4394                   node = tree->parent_node;
4395                   tree = tree->parent_tree;
4396                   if (tree == NULL)
4397                     break;
4398                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4399                                                            &iter,
4400                                                            &parent_iter);
4401                   gtk_tree_path_up (path);
4402
4403                   /* Sanity check */
4404                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
4405                 }
4406             }
4407           while (!done);
4408         }
4409
4410       if (!node)
4411         break;
4412
4413       new_height = GTK_RBNODE_GET_HEIGHT (node);
4414
4415       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4416           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4417         {
4418           gint old_height = new_height;
4419
4420           need_redraw = TRUE;
4421           if (validate_row (tree_view, tree, node, &iter, path))
4422             {
4423               new_height = GTK_RBNODE_GET_HEIGHT (node);
4424               size_changed = TRUE;
4425
4426               area_below -= new_height - old_height;
4427             }
4428         }
4429
4430       area_below -= MAX (new_height, tree_view->priv->expander_size);
4431     }
4432   gtk_tree_path_free (path);
4433
4434   /* If we ran out of tree, and have extra area_below left, we need to add it
4435    * to area_above */
4436   if (area_below > 0)
4437     area_above += area_below;
4438
4439   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
4440
4441   /* We walk backwards */
4442   while (area_above > 0)
4443     {
4444       gint new_height;
4445
4446       _gtk_rbtree_prev_full (tree, node, &tree, &node);
4447       if (! gtk_tree_path_prev (above_path) && node != NULL)
4448         {
4449           gtk_tree_path_free (above_path);
4450           above_path = _gtk_tree_view_find_path (tree_view, tree, node);
4451         }
4452       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
4453
4454       if (node == NULL)
4455         break;
4456
4457       new_height = GTK_RBNODE_GET_HEIGHT (node);
4458
4459       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4460           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4461         {
4462           gint old_height = new_height;
4463
4464           need_redraw = TRUE;
4465           if (validate_row (tree_view, tree, node, &iter, above_path))
4466             {
4467               new_height = GTK_RBNODE_GET_HEIGHT (node);
4468               size_changed = TRUE;
4469
4470               area_above -= new_height - old_height;
4471             }
4472         }
4473       area_above -= MAX (new_height, tree_view->priv->expander_size);
4474       update_dy = TRUE;
4475     }
4476
4477   if (size_changed)
4478     {
4479       GtkRequisition requisition;
4480
4481       /* We temporarily guess a size, under the assumption that it will be the
4482        * same when we get our next size_allocate.  If we don't do this, we'll be
4483        * in an inconsistent state if we call top_row_to_dy. */
4484       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
4485       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
4486       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
4487       gtk_adjustment_changed (tree_view->priv->hadjustment);
4488       gtk_adjustment_changed (tree_view->priv->vadjustment);
4489       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4490     }
4491
4492   /* if we scroll at all, always update dy and kill the top_row */
4493   if (tree_view->priv->scroll_to_path &&
4494       ! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
4495     {
4496       update_dy = TRUE;
4497       if (tree_view->priv->top_row)
4498         {
4499           gtk_tree_row_reference_free (tree_view->priv->top_row);
4500           tree_view->priv->top_row = NULL;
4501         }
4502     }
4503
4504   /* if we walk backwards at all, then we need to reset our dy. */
4505   if (update_dy)
4506     {
4507       gint dy;
4508       if (node != NULL)
4509         {
4510           dy = _gtk_rbtree_node_find_offset (tree, node) - area_above;
4511         }
4512       else
4513         {
4514           dy = 0;
4515         }
4516
4517       gtk_adjustment_set_value (tree_view->priv->vadjustment, dy);
4518       need_redraw = TRUE;
4519     }
4520
4521   if (tree_view->priv->scroll_to_path)
4522     {
4523       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
4524       tree_view->priv->scroll_to_path = NULL;
4525     }
4526
4527   if (above_path)
4528     gtk_tree_path_free (above_path);
4529
4530   if (tree_view->priv->scroll_to_column)
4531     {
4532       tree_view->priv->scroll_to_column = NULL;
4533     }
4534   if (need_redraw)
4535     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4536 }
4537
4538 static void
4539 initialize_fixed_height_mode (GtkTreeView *tree_view)
4540 {
4541   if (!tree_view->priv->tree)
4542     return;
4543
4544   if (tree_view->priv->fixed_height < 0)
4545     {
4546       GtkTreeIter iter;
4547       GtkTreePath *path;
4548
4549       GtkRBTree *tree = NULL;
4550       GtkRBNode *node = NULL;
4551
4552       tree = tree_view->priv->tree;
4553       node = tree->root;
4554
4555       path = _gtk_tree_view_find_path (tree_view, tree, node);
4556       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
4557
4558       validate_row (tree_view, tree, node, &iter, path);
4559
4560       gtk_tree_path_free (path);
4561
4562       tree_view->priv->fixed_height = MAX (GTK_RBNODE_GET_HEIGHT (node),
4563                                            tree_view->priv->expander_size);
4564     }
4565
4566    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
4567                                  tree_view->priv->fixed_height);
4568 }
4569
4570 /* Our strategy for finding nodes to validate is a little convoluted.  We find
4571  * the left-most uninvalidated node.  We then try walking right, validating
4572  * nodes.  Once we find a valid node, we repeat the previous process of finding
4573  * the first invalid node.
4574  */
4575
4576 static gboolean
4577 do_validate_rows (GtkTreeView *tree_view)
4578 {
4579   GtkRBTree *tree = NULL;
4580   GtkRBNode *node = NULL;
4581   gboolean validated_area = FALSE;
4582   gint retval = TRUE;
4583   GtkTreePath *path = NULL;
4584   GtkTreeIter iter;
4585   gint i = 0;
4586
4587   gint prev_height = -1;
4588   gboolean fixed_height = TRUE;
4589
4590   g_assert (tree_view);
4591
4592   if (tree_view->priv->tree == NULL)
4593       return FALSE;
4594
4595   if (tree_view->priv->fixed_height_mode)
4596     {
4597       if (tree_view->priv->fixed_height < 0)
4598         initialize_fixed_height_mode (tree_view);
4599
4600       return FALSE;
4601     }
4602
4603   do
4604     {
4605       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
4606         {
4607           retval = FALSE;
4608           goto done;
4609         }
4610
4611       if (path != NULL)
4612         {
4613           node = _gtk_rbtree_next (tree, node);
4614           if (node != NULL)
4615             {
4616               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
4617               gtk_tree_path_next (path);
4618             }
4619           else
4620             {
4621               gtk_tree_path_free (path);
4622               path = NULL;
4623             }
4624         }
4625
4626       if (path == NULL)
4627         {
4628           tree = tree_view->priv->tree;
4629           node = tree_view->priv->tree->root;
4630
4631           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
4632
4633           do
4634             {
4635               if (node->left != tree->nil &&
4636                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
4637                 {
4638                   node = node->left;
4639                 }
4640               else if (node->right != tree->nil &&
4641                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
4642                 {
4643                   node = node->right;
4644                 }
4645               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4646                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4647                 {
4648                   break;
4649                 }
4650               else if (node->children != NULL)
4651                 {
4652                   tree = node->children;
4653                   node = tree->root;
4654                 }
4655               else
4656                 /* RBTree corruption!  All bad */
4657                 g_assert_not_reached ();
4658             }
4659           while (TRUE);
4660           path = _gtk_tree_view_find_path (tree_view, tree, node);
4661           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
4662         }
4663
4664       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
4665                        validated_area;
4666
4667       if (!tree_view->priv->fixed_height_check)
4668         {
4669           gint height;
4670
4671           height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
4672           if (prev_height < 0)
4673             prev_height = height;
4674           else if (prev_height != height)
4675             fixed_height = FALSE;
4676         }
4677
4678       i++;
4679     }
4680   while (i < GTK_TREE_VIEW_NUM_ROWS_PER_IDLE);
4681
4682   if (!tree_view->priv->fixed_height_check)
4683    {
4684      if (fixed_height)
4685        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height);
4686
4687      tree_view->priv->fixed_height_check = 1;
4688    }
4689
4690  done:
4691   if (validated_area)
4692     {
4693       GtkRequisition requisition;
4694       /* We temporarily guess a size, under the assumption that it will be the
4695        * same when we get our next size_allocate.  If we don't do this, we'll be
4696        * in an inconsistent state when we call top_row_to_dy. */
4697       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
4698       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
4699       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
4700       gtk_adjustment_changed (tree_view->priv->hadjustment);
4701       gtk_adjustment_changed (tree_view->priv->vadjustment);
4702       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4703     }
4704
4705   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
4706     gtk_tree_view_top_row_to_dy (tree_view);
4707   else
4708     gtk_tree_view_dy_to_top_row (tree_view);
4709
4710   if (path) gtk_tree_path_free (path);
4711
4712   return retval;
4713 }
4714
4715 static gboolean
4716 validate_rows (GtkTreeView *tree_view)
4717 {
4718   gboolean retval;
4719
4720   retval = do_validate_rows (tree_view);
4721
4722   if (! retval && tree_view->priv->validate_rows_timer)
4723     {
4724       g_source_remove (tree_view->priv->validate_rows_timer);
4725       tree_view->priv->validate_rows_timer = 0;
4726     }
4727
4728   return retval;
4729 }
4730
4731 static gboolean
4732 validate_rows_handler (GtkTreeView *tree_view)
4733 {
4734   gboolean retval;
4735
4736   GDK_THREADS_ENTER ();
4737
4738   retval = do_validate_rows (tree_view);
4739   if (! retval && tree_view->priv->validate_rows_timer)
4740     {
4741       g_source_remove (tree_view->priv->validate_rows_timer);
4742       tree_view->priv->validate_rows_timer = 0;
4743     }
4744
4745   GDK_THREADS_LEAVE ();
4746
4747   return retval;
4748 }
4749
4750 static gboolean
4751 do_presize_handler (GtkTreeView *tree_view)
4752 {
4753   if (tree_view->priv->mark_rows_col_dirty)
4754     {
4755       if (tree_view->priv->tree)
4756         _gtk_rbtree_column_invalid (tree_view->priv->tree);
4757       tree_view->priv->mark_rows_col_dirty = FALSE;
4758     }
4759   validate_visible_area (tree_view);
4760   tree_view->priv->presize_handler_timer = 0;
4761
4762   return FALSE;
4763 }
4764
4765 static gboolean
4766 presize_handler_callback (gpointer data)
4767 {
4768   GDK_THREADS_ENTER ();
4769
4770   do_presize_handler (GTK_TREE_VIEW (data));
4771
4772   GDK_THREADS_LEAVE ();
4773
4774   return FALSE;
4775 }
4776
4777 static void
4778 install_presize_handler (GtkTreeView *tree_view)
4779 {
4780   if (! GTK_WIDGET_REALIZED (tree_view))
4781     return;
4782
4783   if (! tree_view->priv->presize_handler_timer)
4784     {
4785       tree_view->priv->presize_handler_timer =
4786         g_idle_add_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
4787     }
4788   if (! tree_view->priv->validate_rows_timer)
4789     {
4790       tree_view->priv->validate_rows_timer =
4791         g_idle_add_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
4792     }
4793 }
4794
4795 static gboolean
4796 scroll_sync_handler (GtkTreeView *tree_view)
4797 {
4798
4799   GDK_THREADS_ENTER ();
4800
4801   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
4802     gtk_tree_view_top_row_to_dy (tree_view);
4803   else
4804     gtk_tree_view_dy_to_top_row (tree_view);
4805
4806   tree_view->priv->scroll_sync_timer = 0;
4807
4808   GDK_THREADS_LEAVE ();
4809
4810   return FALSE;
4811 }
4812
4813 static void
4814 install_scroll_sync_handler (GtkTreeView *tree_view)
4815 {
4816   if (! GTK_WIDGET_REALIZED (tree_view))
4817     return;
4818
4819   if (!tree_view->priv->scroll_sync_timer)
4820     {
4821       tree_view->priv->scroll_sync_timer =
4822         g_idle_add_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
4823     }
4824 }
4825
4826 /* Always call this iff dy is in the visible range.  If the tree is empty, then
4827  * it's set to be NULL, and top_row_dy is 0;
4828  */
4829 static void
4830 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
4831 {
4832   GtkTreePath *path;
4833   GtkRBTree *tree;
4834   GtkRBNode *node;
4835
4836   gtk_tree_row_reference_free (tree_view->priv->top_row);
4837   if (tree_view->priv->tree == NULL)
4838     tree = NULL;
4839   else
4840     tree_view->priv->top_row_dy = _gtk_rbtree_find_offset (tree_view->priv->tree,
4841                                                            tree_view->priv->dy,
4842                                                            &tree, &node);
4843   if (tree == NULL)
4844     {
4845       tree_view->priv->top_row = NULL;
4846       tree_view->priv->top_row_dy = 0;
4847       return;
4848     }
4849
4850   path = _gtk_tree_view_find_path (tree_view, tree, node);
4851   tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
4852   gtk_tree_path_free (path);
4853 }
4854
4855 static void
4856 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
4857 {
4858   GtkTreePath *path;
4859   GtkRBTree *tree;
4860   GtkRBNode *node;
4861
4862   if (tree_view->priv->top_row)
4863     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
4864   else
4865     path = NULL;
4866
4867   if (!path)
4868     tree = NULL;
4869   else
4870     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
4871
4872   if (path)
4873     gtk_tree_path_free (path);
4874
4875   if (tree == NULL)
4876     {
4877       /* keep dy and set new toprow */
4878       gtk_tree_row_reference_free (tree_view->priv->top_row);
4879       tree_view->priv->top_row = NULL;
4880       tree_view->priv->top_row_dy = 0;
4881       /* DO NOT install the idle handler */
4882       gtk_tree_view_dy_to_top_row (tree_view);
4883       return;
4884     }
4885
4886   if (MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size)
4887       < tree_view->priv->top_row_dy)
4888     {
4889       /* new top row -- do NOT install the idle handler */
4890       gtk_tree_view_dy_to_top_row (tree_view);
4891       return;
4892     }
4893
4894   tree_view->priv->dy = _gtk_rbtree_node_find_offset (tree, node);
4895   tree_view->priv->dy += tree_view->priv->top_row_dy;
4896   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4897                             (gdouble)tree_view->priv->dy);
4898 }
4899
4900
4901 void
4902 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
4903 {
4904   tree_view->priv->mark_rows_col_dirty = TRUE;
4905
4906   install_presize_handler (tree_view);
4907 }
4908
4909 /*
4910  * This function works synchronously (due to the while (validate_rows...)
4911  * loop).
4912  *
4913  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
4914  * here. You now need to check that yourself.
4915  */
4916 void
4917 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
4918                                 GtkTreeViewColumn *column)
4919 {
4920   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
4921   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
4922
4923   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
4924
4925   do_presize_handler (tree_view);
4926   while (validate_rows (tree_view));
4927
4928   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4929 }
4930
4931 /* Drag-and-drop */
4932
4933 static void
4934 set_source_row (GdkDragContext *context,
4935                 GtkTreeModel   *model,
4936                 GtkTreePath    *source_row)
4937 {
4938   g_object_set_data_full (G_OBJECT (context),
4939                           "gtk-tree-view-source-row",
4940                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
4941                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
4942 }
4943
4944 static GtkTreePath*
4945 get_source_row (GdkDragContext *context)
4946 {
4947   GtkTreeRowReference *ref =
4948     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
4949
4950   if (ref)
4951     return gtk_tree_row_reference_get_path (ref);
4952   else
4953     return NULL;
4954 }
4955
4956 typedef struct
4957 {
4958   GtkTreeRowReference *dest_row;
4959   gboolean             path_down_mode;
4960   gboolean             empty_view_drop;
4961   gboolean             drop_append_mode;
4962 }
4963 DestRow;
4964
4965 static void
4966 dest_row_free (gpointer data)
4967 {
4968   DestRow *dr = (DestRow *)data;
4969
4970   gtk_tree_row_reference_free (dr->dest_row);
4971   g_free (dr);
4972 }
4973
4974
4975 static void
4976 set_dest_row (GdkDragContext *context,
4977               GtkTreeModel   *model,
4978               GtkTreePath    *dest_row,
4979               gboolean        path_down_mode,
4980               gboolean        empty_view_drop,
4981               gboolean        drop_append_mode)
4982 {
4983   DestRow *dr;
4984
4985   if (!dest_row)
4986     {
4987       g_object_set_data_full (G_OBJECT (context), "gtk-tree-view-dest-row",
4988                               NULL, NULL);
4989       return;
4990     }
4991
4992   dr = g_new0 (DestRow, 1);
4993
4994   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
4995   dr->path_down_mode = path_down_mode;
4996   dr->empty_view_drop = empty_view_drop;
4997   dr->drop_append_mode = drop_append_mode;
4998
4999   g_object_set_data_full (G_OBJECT (context), "gtk-tree-view-dest-row",
5000                           dr, (GDestroyNotify) dest_row_free);
5001 }
5002
5003 static GtkTreePath*
5004 get_dest_row (GdkDragContext *context,
5005               gboolean       *path_down_mode)
5006 {
5007   DestRow *dr =
5008     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
5009
5010   if (dr)
5011     {
5012       GtkTreePath *path = NULL;
5013
5014       if (path_down_mode)
5015         *path_down_mode = dr->path_down_mode;
5016
5017       if (dr->dest_row)
5018         path = gtk_tree_row_reference_get_path (dr->dest_row);
5019       else if (dr->empty_view_drop)
5020         path = gtk_tree_path_new_from_indices (0, -1);
5021       else
5022         path = NULL;
5023
5024       if (path && dr->drop_append_mode)
5025         gtk_tree_path_next (path);
5026
5027       return path;
5028     }
5029   else
5030     return NULL;
5031 }
5032
5033 /* Get/set whether drag_motion requested the drag data and
5034  * drag_data_received should thus not actually insert the data,
5035  * since the data doesn't result from a drop.
5036  */
5037 static void
5038 set_status_pending (GdkDragContext *context,
5039                     GdkDragAction   suggested_action)
5040 {
5041   g_object_set_data (G_OBJECT (context),
5042                      "gtk-tree-view-status-pending",
5043                      GINT_TO_POINTER (suggested_action));
5044 }
5045
5046 static GdkDragAction
5047 get_status_pending (GdkDragContext *context)
5048 {
5049   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
5050                                              "gtk-tree-view-status-pending"));
5051 }
5052
5053 static TreeViewDragInfo*
5054 get_info (GtkTreeView *tree_view)
5055 {
5056   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
5057 }
5058
5059 static void
5060 clear_source_info (TreeViewDragInfo *di)
5061 {
5062   if (di->source_target_list)
5063     gtk_target_list_unref (di->source_target_list);
5064
5065   di->source_target_list = NULL;
5066 }
5067
5068 static void
5069 clear_dest_info (TreeViewDragInfo *di)
5070 {
5071   if (di->dest_target_list)
5072     gtk_target_list_unref (di->dest_target_list);
5073
5074   di->dest_target_list = NULL;
5075 }
5076
5077 static void
5078 destroy_info (TreeViewDragInfo *di)
5079 {
5080   clear_source_info (di);
5081   clear_dest_info (di);
5082   g_free (di);
5083 }
5084
5085 static TreeViewDragInfo*
5086 ensure_info (GtkTreeView *tree_view)
5087 {
5088   TreeViewDragInfo *di;
5089
5090   di = get_info (tree_view);
5091
5092   if (di == NULL)
5093     {
5094       di = g_new0 (TreeViewDragInfo, 1);
5095
5096       g_object_set_data_full (G_OBJECT (tree_view),
5097                               "gtk-tree-view-drag-info",
5098                               di,
5099                               (GDestroyNotify) destroy_info);
5100     }
5101
5102   return di;
5103 }
5104
5105 static void
5106 remove_info (GtkTreeView *tree_view)
5107 {
5108   g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
5109 }
5110
5111 #if 0
5112 static gint
5113 drag_scan_timeout (gpointer data)
5114 {
5115   GtkTreeView *tree_view;
5116   gint x, y;
5117   GdkModifierType state;
5118   GtkTreePath *path = NULL;
5119   GtkTreeViewColumn *column = NULL;
5120   GdkRectangle visible_rect;
5121
5122   GDK_THREADS_ENTER ();
5123
5124   tree_view = GTK_TREE_VIEW (data);
5125
5126   gdk_window_get_pointer (tree_view->priv->bin_window,
5127                           &x, &y, &state);
5128
5129   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
5130
5131   /* See if we are near the edge. */
5132   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
5133       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
5134       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
5135       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
5136     {
5137       gtk_tree_view_get_path_at_pos (tree_view,
5138                                      tree_view->priv->bin_window,
5139                                      x, y,
5140                                      &path,
5141                                      &column,
5142                                      NULL,
5143                                      NULL);
5144
5145       if (path != NULL)
5146         {
5147           gtk_tree_view_scroll_to_cell (tree_view,
5148                                         path,
5149                                         column,
5150                                         TRUE,
5151                                         0.5, 0.5);
5152
5153           gtk_tree_path_free (path);
5154         }
5155     }
5156
5157   GDK_THREADS_LEAVE ();
5158
5159   return TRUE;
5160 }
5161 #endif /* 0 */
5162
5163 static void
5164 remove_scroll_timeout (GtkTreeView *tree_view)
5165 {
5166   if (tree_view->priv->scroll_timeout != 0)
5167     {
5168       g_source_remove (tree_view->priv->scroll_timeout);
5169       tree_view->priv->scroll_timeout = 0;
5170     }
5171 }
5172 static gboolean
5173 check_model_dnd (GtkTreeModel *model,
5174                  GType         required_iface,
5175                  const gchar  *signal)
5176 {
5177   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
5178     {
5179       g_warning ("You must override the default '%s' handler "
5180                  "on GtkTreeView when using models that don't support "
5181                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
5182                  "is to connect to '%s' and call "
5183                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
5184                  "the default handler from running. Look at the source code "
5185                  "for the default handler in gtktreeview.c to get an idea what "
5186                  "your handler should do. (gtktreeview.c is in the GTK source "
5187                  "code.) If you're using GTK from a language other than C, "
5188                  "there may be a more natural way to override default handlers, e.g. via derivation.",
5189                  signal, g_type_name (required_iface), signal);
5190       return FALSE;
5191     }
5192   else
5193     return TRUE;
5194 }
5195
5196 static void
5197 remove_open_timeout (GtkTreeView *tree_view)
5198 {
5199   if (tree_view->priv->open_dest_timeout != 0)
5200     {
5201       g_source_remove (tree_view->priv->open_dest_timeout);
5202       tree_view->priv->open_dest_timeout = 0;
5203     }
5204 }
5205
5206
5207 static gint
5208 open_row_timeout (gpointer data)
5209 {
5210   GtkTreeView *tree_view = data;
5211   GtkTreePath *dest_path = NULL;
5212   GtkTreeViewDropPosition pos;
5213   gboolean result = FALSE;
5214
5215   GDK_THREADS_ENTER ();
5216
5217   gtk_tree_view_get_drag_dest_row (tree_view,
5218                                    &dest_path,
5219                                    &pos);
5220
5221   if (dest_path &&
5222       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
5223        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
5224     {
5225       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
5226       tree_view->priv->open_dest_timeout = 0;
5227
5228       gtk_tree_path_free (dest_path);
5229     }
5230   else
5231     {
5232       if (dest_path)
5233         gtk_tree_path_free (dest_path);
5234
5235       result = TRUE;
5236     }
5237
5238   GDK_THREADS_LEAVE ();
5239
5240   return result;
5241 }
5242
5243 static gint
5244 scroll_row_timeout (gpointer data)
5245 {
5246   GtkTreeView *tree_view = data;
5247
5248   GDK_THREADS_ENTER ();
5249
5250   gtk_tree_view_vertical_autoscroll (tree_view);
5251
5252   GDK_THREADS_LEAVE ();
5253
5254   return TRUE;
5255 }
5256
5257 /* Returns TRUE if event should not be propagated to parent widgets */
5258 static gboolean
5259 set_destination_row (GtkTreeView    *tree_view,
5260                      GdkDragContext *context,
5261                      gint            x,
5262                      gint            y,
5263                      GdkDragAction  *suggested_action,
5264                      GdkAtom        *target)
5265 {
5266   GtkTreePath *path = NULL;
5267   GtkTreeViewDropPosition pos;
5268   GtkTreeViewDropPosition old_pos;
5269   TreeViewDragInfo *di;
5270   GtkWidget *widget;
5271   GtkTreePath *old_dest_path = NULL;
5272   gboolean can_drop = FALSE;
5273
5274   *suggested_action = 0;
5275   *target = GDK_NONE;
5276
5277   widget = GTK_WIDGET (tree_view);
5278
5279   di = get_info (tree_view);
5280
5281   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
5282     {
5283       /* someone unset us as a drag dest, note that if
5284        * we return FALSE drag_leave isn't called
5285        */
5286
5287       gtk_tree_view_set_drag_dest_row (tree_view,
5288                                        NULL,
5289                                        GTK_TREE_VIEW_DROP_BEFORE);
5290
5291       remove_scroll_timeout (GTK_TREE_VIEW (widget));
5292       remove_open_timeout (GTK_TREE_VIEW (widget));
5293
5294       return FALSE; /* no longer a drop site */
5295     }
5296
5297   *target = gtk_drag_dest_find_target (widget, context, di->dest_target_list);
5298   if (*target == GDK_NONE)
5299     {
5300       return FALSE;
5301     }
5302
5303   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
5304                                           x, y,
5305                                           &path,
5306                                           &pos))
5307     {
5308       gint n_children;
5309       GtkTreeModel *model;
5310
5311       remove_open_timeout (tree_view);
5312
5313       /* the row got dropped on empty space, let's setup a special case
5314        */
5315
5316       if (path)
5317         gtk_tree_path_free (path);
5318
5319       model = gtk_tree_view_get_model (tree_view);
5320
5321       n_children = gtk_tree_model_iter_n_children (model, NULL);
5322       if (n_children)
5323         {
5324           pos = GTK_TREE_VIEW_DROP_AFTER;
5325           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
5326         }
5327       else
5328         {
5329           pos = GTK_TREE_VIEW_DROP_BEFORE;
5330           path = gtk_tree_path_new_from_indices (0, -1);
5331         }
5332
5333       can_drop = TRUE;
5334
5335       goto out;
5336     }
5337
5338   g_assert (path);
5339
5340   /* If we left the current row's "open" zone, unset the timeout for
5341    * opening the row
5342    */
5343   gtk_tree_view_get_drag_dest_row (tree_view,
5344                                    &old_dest_path,
5345                                    &old_pos);
5346
5347   if (old_dest_path &&
5348       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
5349        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
5350          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
5351     remove_open_timeout (tree_view);
5352
5353   if (old_dest_path)
5354     gtk_tree_path_free (old_dest_path);
5355
5356   if (TRUE /* FIXME if the location droppable predicate */)
5357     {
5358       can_drop = TRUE;
5359     }
5360
5361 out:
5362   if (can_drop)
5363     {
5364       GtkWidget *source_widget;
5365
5366       *suggested_action = context->suggested_action;
5367       source_widget = gtk_drag_get_source_widget (context);
5368
5369       if (source_widget == widget)
5370         {
5371           /* Default to MOVE, unless the user has
5372            * pressed ctrl or shift to affect available actions
5373            */
5374           if ((context->actions & GDK_ACTION_MOVE) != 0)
5375             *suggested_action = GDK_ACTION_MOVE;
5376         }
5377
5378       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5379                                        path, pos);
5380     }
5381   else
5382     {
5383       /* can't drop here */
5384       remove_open_timeout (tree_view);
5385
5386       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5387                                        NULL,
5388                                        GTK_TREE_VIEW_DROP_BEFORE);
5389     }
5390
5391   if (path)
5392     gtk_tree_path_free (path);
5393
5394   return TRUE;
5395 }
5396
5397 static GtkTreePath*
5398 get_logical_dest_row (GtkTreeView *tree_view,
5399                       gboolean    *path_down_mode,
5400                       gboolean    *drop_append_mode)
5401 {
5402   /* adjust path to point to the row the drop goes in front of */
5403   GtkTreePath *path = NULL;
5404   GtkTreeViewDropPosition pos;
5405
5406   g_return_val_if_fail (path_down_mode != NULL, NULL);
5407   g_return_val_if_fail (drop_append_mode != NULL, NULL);
5408
5409   *path_down_mode = FALSE;
5410   *drop_append_mode = 0;
5411
5412   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
5413
5414   if (path == NULL)
5415     return NULL;
5416
5417   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
5418     ; /* do nothing */
5419   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
5420            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
5421     *path_down_mode = TRUE;
5422   else
5423     {
5424       GtkTreeIter iter;
5425       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
5426
5427       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
5428
5429       if (!gtk_tree_model_get_iter (model, &iter, path) ||
5430           !gtk_tree_model_iter_next (model, &iter))
5431         *drop_append_mode = 1;
5432       else
5433         {
5434           *drop_append_mode = 0;
5435           gtk_tree_path_next (path);
5436         }
5437     }
5438
5439   return path;
5440 }
5441
5442 static gboolean
5443 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
5444                                         GdkEventMotion   *event)
5445 {
5446   GdkDragContext *context;
5447   TreeViewDragInfo *di;
5448   GtkTreePath *path = NULL;
5449   gint button;
5450   gint cell_x, cell_y;
5451   GtkTreeModel *model;
5452   gboolean retval = FALSE;
5453
5454   di = get_info (tree_view);
5455
5456   if (di == NULL)
5457     goto out;
5458
5459   if (tree_view->priv->pressed_button < 0)
5460     goto out;
5461
5462   if (!gtk_drag_check_threshold (GTK_WIDGET (tree_view),
5463                                  tree_view->priv->press_start_x,
5464                                  tree_view->priv->press_start_y,
5465                                  event->x, event->y))
5466     goto out;
5467
5468   model = gtk_tree_view_get_model (tree_view);
5469
5470   if (model == NULL)
5471     goto out;
5472
5473   button = tree_view->priv->pressed_button;
5474   tree_view->priv->pressed_button = -1;
5475
5476   gtk_tree_view_get_path_at_pos (tree_view,
5477                                  tree_view->priv->press_start_x,
5478                                  tree_view->priv->press_start_y,
5479                                  &path,
5480                                  NULL,
5481                                  &cell_x,
5482                                  &cell_y);
5483
5484   if (path == NULL)
5485     goto out;
5486
5487   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
5488       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
5489                                            path))
5490     goto out;
5491
5492   /* FIXME Check whether we're a start button, if not return FALSE and
5493    * free path
5494    */
5495
5496   /* Now we can begin the drag */
5497
5498   retval = TRUE;
5499
5500   context = gtk_drag_begin (GTK_WIDGET (tree_view),
5501                             di->source_target_list,
5502                             di->source_actions,
5503                             button,
5504                             (GdkEvent*)event);
5505
5506   set_source_row (context, model, path);
5507
5508  out:
5509   if (path)
5510     gtk_tree_path_free (path);
5511
5512   return retval;
5513 }
5514
5515
5516 static void
5517 gtk_tree_view_drag_begin (GtkWidget      *widget,
5518                           GdkDragContext *context)
5519 {
5520   GtkTreeView *tree_view;
5521   GtkTreePath *path = NULL;
5522   gint cell_x, cell_y;
5523   GdkPixmap *row_pix;
5524
5525   tree_view = GTK_TREE_VIEW (widget);
5526
5527   /* if the user uses a custom DnD impl, we don't set the icon here */
5528   if (!get_info (tree_view))
5529     return;
5530
5531   gtk_tree_view_get_path_at_pos (tree_view,
5532                                  tree_view->priv->press_start_x,
5533                                  tree_view->priv->press_start_y,
5534                                  &path,
5535                                  NULL,
5536                                  &cell_x,
5537                                  &cell_y);
5538
5539   g_return_if_fail (path != NULL);
5540
5541   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
5542                                                 path);
5543
5544   gtk_drag_set_icon_pixmap (context,
5545                             gdk_drawable_get_colormap (row_pix),
5546                             row_pix,
5547                             NULL,
5548                             /* the + 1 is for the black border in the icon */
5549                             tree_view->priv->press_start_x + 1,
5550                             cell_y + 1);
5551
5552   g_object_unref (row_pix);
5553   gtk_tree_path_free (path);
5554 }
5555
5556 static void
5557 gtk_tree_view_drag_end (GtkWidget      *widget,
5558                         GdkDragContext *context)
5559 {
5560   /* do nothing */
5561 }
5562
5563 /* Default signal implementations for the drag signals */
5564 static void
5565 gtk_tree_view_drag_data_get (GtkWidget        *widget,
5566                              GdkDragContext   *context,
5567                              GtkSelectionData *selection_data,
5568                              guint             info,
5569                              guint             time)
5570 {
5571   GtkTreeView *tree_view;
5572   GtkTreeModel *model;
5573   TreeViewDragInfo *di;
5574   GtkTreePath *source_row;
5575
5576   tree_view = GTK_TREE_VIEW (widget);
5577
5578   model = gtk_tree_view_get_model (tree_view);
5579
5580   if (model == NULL)
5581     return;
5582
5583   di = get_info (GTK_TREE_VIEW (widget));
5584
5585   if (di == NULL)
5586     return;
5587
5588   source_row = get_source_row (context);
5589
5590   if (source_row == NULL)
5591     return;
5592
5593   /* We can implement the GTK_TREE_MODEL_ROW target generically for
5594    * any model; for DragSource models there are some other targets
5595    * we also support.
5596    */
5597
5598   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
5599       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
5600                                           source_row,
5601                                           selection_data))
5602     goto done;
5603
5604   /* If drag_data_get does nothing, try providing row data. */
5605   if (selection_data->target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
5606     {
5607       gtk_tree_set_row_drag_data (selection_data,
5608                                   model,
5609                                   source_row);
5610     }
5611
5612  done:
5613   gtk_tree_path_free (source_row);
5614 }
5615
5616
5617 static void
5618 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
5619                                 GdkDragContext *context)
5620 {
5621   TreeViewDragInfo *di;
5622   GtkTreeModel *model;
5623   GtkTreeView *tree_view;
5624   GtkTreePath *source_row;
5625
5626   tree_view = GTK_TREE_VIEW (widget);
5627   model = gtk_tree_view_get_model (tree_view);
5628
5629   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
5630     return;
5631
5632   di = get_info (tree_view);
5633
5634   if (di == NULL)
5635     return;
5636
5637   source_row = get_source_row (context);
5638
5639   if (source_row == NULL)
5640     return;
5641
5642   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
5643                                          source_row);
5644
5645   gtk_tree_path_free (source_row);
5646
5647   set_source_row (context, NULL, NULL);
5648 }
5649
5650 static void
5651 gtk_tree_view_drag_leave (GtkWidget      *widget,
5652                           GdkDragContext *context,
5653                           guint             time)
5654 {
5655   TreeViewDragInfo *di;
5656
5657   di = get_info (GTK_TREE_VIEW (widget));
5658
5659   /* unset any highlight row */
5660   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5661                                    NULL,
5662                                    GTK_TREE_VIEW_DROP_BEFORE);
5663
5664   remove_scroll_timeout (GTK_TREE_VIEW (widget));
5665   remove_open_timeout (GTK_TREE_VIEW (widget));
5666 }
5667
5668
5669 static gboolean
5670 gtk_tree_view_drag_motion (GtkWidget        *widget,
5671                            GdkDragContext   *context,
5672                            gint              x,
5673                            gint              y,
5674                            guint             time)
5675 {
5676   gboolean empty;
5677   GtkTreePath *path = NULL;
5678   GtkTreeModel *model;
5679   GtkTreeViewDropPosition pos;
5680   GtkTreeView *tree_view;
5681   GdkDragAction suggested_action = 0;
5682   GdkAtom target;
5683
5684   tree_view = GTK_TREE_VIEW (widget);
5685
5686   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
5687     return FALSE;
5688
5689   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
5690
5691   /* we only know this *after* set_desination_row */
5692   model = gtk_tree_view_get_model (tree_view);
5693   empty = tree_view->priv->empty_view_drop;
5694
5695   if (path == NULL && !empty)
5696     {
5697       /* Can't drop here. */
5698       gdk_drag_status (context, 0, time);
5699     }
5700   else
5701     {
5702       if (tree_view->priv->open_dest_timeout == 0 &&
5703           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
5704            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
5705         {
5706           tree_view->priv->open_dest_timeout =
5707             g_timeout_add (500, open_row_timeout, tree_view);
5708         }
5709       else if (tree_view->priv->scroll_timeout == 0)
5710         {
5711           tree_view->priv->scroll_timeout =
5712             g_timeout_add (150, scroll_row_timeout, tree_view);
5713         }
5714
5715       if (target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
5716         {
5717           /* Request data so we can use the source row when
5718            * determining whether to accept the drop
5719            */
5720           set_status_pending (context, suggested_action);
5721           gtk_drag_get_data (widget, context, target, time);
5722         }
5723       else
5724         {
5725           set_status_pending (context, 0);
5726           gdk_drag_status (context, suggested_action, time);
5727         }
5728     }
5729
5730   if (path)
5731     gtk_tree_path_free (path);
5732
5733   return TRUE;
5734 }
5735
5736
5737 static gboolean
5738 gtk_tree_view_drag_drop (GtkWidget        *widget,
5739                          GdkDragContext   *context,
5740                          gint              x,
5741                          gint              y,
5742                          guint             time)
5743 {
5744   GtkTreeView *tree_view;
5745   GtkTreePath *path;
5746   GdkDragAction suggested_action = 0;
5747   GdkAtom target = GDK_NONE;
5748   TreeViewDragInfo *di;
5749   GtkTreeModel *model;
5750   gboolean path_down_mode;
5751   gboolean drop_append_mode;
5752
5753   tree_view = GTK_TREE_VIEW (widget);
5754
5755   model = gtk_tree_view_get_model (tree_view);
5756
5757   remove_scroll_timeout (GTK_TREE_VIEW (widget));
5758   remove_open_timeout (GTK_TREE_VIEW (widget));
5759
5760   di = get_info (tree_view);
5761
5762   if (di == NULL)
5763     return FALSE;
5764
5765   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
5766     return FALSE;
5767
5768   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
5769     return FALSE;
5770
5771   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
5772
5773   if (target != GDK_NONE && path != NULL)
5774     {
5775       /* in case a motion had requested drag data, change things so we
5776        * treat drag data receives as a drop.
5777        */
5778       set_status_pending (context, 0);
5779       set_dest_row (context, model, path,
5780                     path_down_mode, tree_view->priv->empty_view_drop,
5781                     drop_append_mode);
5782     }
5783
5784   if (path)
5785     gtk_tree_path_free (path);
5786
5787   /* Unset this thing */
5788   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5789                                    NULL,
5790                                    GTK_TREE_VIEW_DROP_BEFORE);
5791
5792   if (target != GDK_NONE)
5793     {
5794       gtk_drag_get_data (widget, context, target, time);
5795       return TRUE;
5796     }
5797   else
5798     return FALSE;
5799 }
5800
5801 static void
5802 gtk_tree_view_drag_data_received (GtkWidget        *widget,
5803                                   GdkDragContext   *context,
5804                                   gint              x,
5805                                   gint              y,
5806                                   GtkSelectionData *selection_data,
5807                                   guint             info,
5808                                   guint             time)
5809 {
5810   GtkTreePath *path;
5811   TreeViewDragInfo *di;
5812   gboolean accepted = FALSE;
5813   GtkTreeModel *model;
5814   GtkTreeView *tree_view;
5815   GtkTreePath *dest_row;
5816   GdkDragAction suggested_action;
5817   gboolean path_down_mode;
5818   gboolean drop_append_mode;
5819
5820   tree_view = GTK_TREE_VIEW (widget);
5821
5822   model = gtk_tree_view_get_model (tree_view);
5823
5824   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
5825     return;
5826
5827   di = get_info (tree_view);
5828
5829   if (di == NULL)
5830     return;
5831
5832   suggested_action = get_status_pending (context);
5833
5834   if (suggested_action)
5835     {
5836       /* We are getting this data due to a request in drag_motion,
5837        * rather than due to a request in drag_drop, so we are just
5838        * supposed to call drag_status, not actually paste in the
5839        * data.
5840        */
5841       path = get_logical_dest_row (tree_view, &path_down_mode,
5842                                    &drop_append_mode);
5843
5844       if (path == NULL)
5845         suggested_action = 0;
5846       else if (path_down_mode)
5847         gtk_tree_path_down (path);
5848
5849       if (suggested_action)
5850         {
5851           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
5852                                                      path,
5853                                                      selection_data))
5854             {
5855               if (path_down_mode)
5856                 {
5857                   path_down_mode = FALSE;
5858                   gtk_tree_path_up (path);
5859
5860                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
5861                                                              path,
5862                                                              selection_data))
5863                     suggested_action = 0;
5864                 }
5865               else
5866                 suggested_action = 0;
5867             }
5868         }
5869
5870       gdk_drag_status (context, suggested_action, time);
5871
5872       if (path)
5873         gtk_tree_path_free (path);
5874
5875       /* If you can't drop, remove user drop indicator until the next motion */
5876       if (suggested_action == 0)
5877         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5878                                          NULL,
5879                                          GTK_TREE_VIEW_DROP_BEFORE);
5880
5881       return;
5882     }
5883
5884   dest_row = get_dest_row (context, &path_down_mode);
5885
5886   if (dest_row == NULL)
5887     return;
5888
5889   if (selection_data->length >= 0)
5890     {
5891       if (path_down_mode)
5892         {
5893           gtk_tree_path_down (dest_row);
5894           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
5895                                                      dest_row, selection_data))
5896             gtk_tree_path_up (dest_row);
5897         }
5898     }
5899
5900   if (selection_data->length >= 0)
5901     {
5902       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
5903                                                  dest_row,
5904                                                  selection_data))
5905         accepted = TRUE;
5906     }
5907
5908   gtk_drag_finish (context,
5909                    accepted,
5910                    (context->action == GDK_ACTION_MOVE),
5911                    time);
5912
5913   if (gtk_tree_path_get_depth (dest_row) == 1
5914       && gtk_tree_path_get_indices (dest_row)[0] == 0)
5915     {
5916       /* special special case drag to "0", scroll to first item */
5917       if (!tree_view->priv->scroll_to_path)
5918         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
5919     }
5920
5921   gtk_tree_path_free (dest_row);
5922
5923   /* drop dest_row */
5924   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
5925 }
5926
5927
5928
5929 /* GtkContainer Methods
5930  */
5931
5932
5933 static void
5934 gtk_tree_view_remove (GtkContainer *container,
5935                       GtkWidget    *widget)
5936 {
5937   GtkTreeView *tree_view;
5938   GtkTreeViewChild *child = NULL;
5939   GList *tmp_list;
5940
5941   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5942
5943   tree_view = GTK_TREE_VIEW (container);
5944
5945   tmp_list = tree_view->priv->children;
5946   while (tmp_list)
5947     {
5948       child = tmp_list->data;
5949       if (child->widget == widget)
5950         {
5951           gtk_widget_unparent (widget);
5952
5953           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
5954           g_list_free_1 (tmp_list);
5955           g_free (child);
5956           return;
5957         }
5958
5959       tmp_list = tmp_list->next;
5960     }
5961
5962   tmp_list = tree_view->priv->columns;
5963
5964   while (tmp_list)
5965     {
5966       GtkTreeViewColumn *column;
5967       column = tmp_list->data;
5968       if (column->button == widget)
5969         {
5970           gtk_widget_unparent (widget);
5971           return;
5972         }
5973       tmp_list = tmp_list->next;
5974     }
5975 }
5976
5977 static void
5978 gtk_tree_view_forall (GtkContainer *container,
5979                       gboolean      include_internals,
5980                       GtkCallback   callback,
5981                       gpointer      callback_data)
5982 {
5983   GtkTreeView *tree_view;
5984   GtkTreeViewChild *child = NULL;
5985   GtkTreeViewColumn *column;
5986   GList *tmp_list;
5987
5988   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5989   g_return_if_fail (callback != NULL);
5990
5991   tree_view = GTK_TREE_VIEW (container);
5992
5993   tmp_list = tree_view->priv->children;
5994   while (tmp_list)
5995     {
5996       child = tmp_list->data;
5997       tmp_list = tmp_list->next;
5998
5999       (* callback) (child->widget, callback_data);
6000     }
6001   if (include_internals == FALSE)
6002     return;
6003
6004   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
6005     {
6006       column = tmp_list->data;
6007
6008       if (column->button)
6009         (* callback) (column->button, callback_data);
6010     }
6011 }
6012
6013 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
6014  * cells. If so we draw one big row-spanning focus rectangle.
6015  */
6016 static gboolean
6017 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
6018 {
6019   GList *list;
6020
6021   for (list = tree_view->priv->columns; list; list = list->next)
6022     {
6023       if (!((GtkTreeViewColumn *)list->data)->visible)
6024         continue;
6025       if (_gtk_tree_view_column_count_special_cells (list->data))
6026         return TRUE;
6027     }
6028
6029   return FALSE;
6030 }
6031
6032 static void
6033 column_sizing_notify (GObject    *object,
6034                       GParamSpec *pspec,
6035                       gpointer    data)
6036 {
6037   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
6038
6039   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
6040     /* disable fixed height mode */
6041     g_object_set (data, "fixed_height_mode", FALSE, NULL);
6042 }
6043
6044 static void
6045 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
6046                                      gboolean     enable)
6047 {
6048   GList *l;
6049
6050   if (tree_view->priv->fixed_height_mode && enable)
6051     return;
6052
6053   if (!enable)
6054     {
6055       tree_view->priv->fixed_height_mode = 0;
6056       tree_view->priv->fixed_height = -1;
6057
6058       /* force a revalidation */
6059       install_presize_handler (tree_view);
6060       return;
6061     }
6062
6063   /* make sure all columns are of type FIXED */
6064   for (l = tree_view->priv->columns; l; l = l->next)
6065     {
6066       GtkTreeViewColumn *c = l->data;
6067
6068       g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
6069     }
6070
6071   /* yes, we really have to do this is in a separate loop */
6072   for (l = tree_view->priv->columns; l; l = l->next)
6073     g_signal_connect (l->data, "notify::sizing",
6074                       G_CALLBACK (column_sizing_notify), tree_view);
6075
6076   tree_view->priv->fixed_height_mode = 1;
6077   tree_view->priv->fixed_height = -1;
6078
6079   if (!tree_view->priv->tree)
6080     return;
6081
6082   initialize_fixed_height_mode (tree_view);
6083 }
6084
6085 /* Returns TRUE if the focus is within the headers, after the focus operation is
6086  * done
6087  */
6088 static gboolean
6089 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
6090                             GtkDirectionType  dir)
6091 {
6092   GtkWidget *focus_child;
6093   GtkContainer *container;
6094
6095   GList *last_column, *first_column;
6096   GList *tmp_list;
6097   gboolean rtl;
6098
6099   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
6100     return FALSE;
6101
6102   focus_child = GTK_CONTAINER (tree_view)->focus_child;
6103   container = GTK_CONTAINER (tree_view);
6104
6105   first_column = tree_view->priv->columns;
6106   while (first_column)
6107     {
6108       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
6109           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
6110           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
6111            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
6112         break;
6113       first_column = first_column->next;
6114     }
6115
6116   /* No headers are visible, or are focusable.  We can't focus in or out.
6117    */
6118   if (first_column == NULL)
6119     return FALSE;
6120
6121   last_column = g_list_last (tree_view->priv->columns);
6122   while (last_column)
6123     {
6124       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
6125           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
6126           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
6127            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
6128         break;
6129       last_column = last_column->prev;
6130     }
6131
6132
6133    rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
6134    if (rtl) {
6135      GList *temp = first_column;
6136      first_column = last_column;
6137      last_column = temp;
6138    }
6139
6140   switch (dir)
6141     {
6142     case GTK_DIR_TAB_BACKWARD:
6143     case GTK_DIR_TAB_FORWARD:
6144     case GTK_DIR_UP:
6145     case GTK_DIR_DOWN:
6146       if (focus_child == NULL)
6147         {
6148           if (tree_view->priv->focus_column != NULL)
6149             focus_child = tree_view->priv->focus_column->button;
6150           else
6151             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
6152           gtk_widget_grab_focus (focus_child);
6153           break;
6154         }
6155       return FALSE;
6156
6157     case GTK_DIR_LEFT:
6158     case GTK_DIR_RIGHT:
6159       if (focus_child == NULL)
6160         {
6161           if (tree_view->priv->focus_column != NULL)
6162             focus_child = tree_view->priv->focus_column->button;
6163           else if (dir == GTK_DIR_LEFT)
6164             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
6165           else
6166             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
6167           gtk_widget_grab_focus (focus_child);
6168           break;
6169         }
6170
6171       if (gtk_widget_child_focus (focus_child, dir))
6172         {
6173           /* The focus moves inside the button. */
6174           /* This is probably a great example of bad UI */
6175           break;
6176         }
6177
6178       /* We need to move the focus among the row of buttons. */
6179       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
6180         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
6181           break;
6182
6183       if (tmp_list == first_column && dir == GTK_DIR_LEFT)
6184         {
6185           focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
6186           gtk_widget_grab_focus (focus_child);
6187           break;
6188         }
6189       else if (tmp_list == last_column && dir == GTK_DIR_RIGHT)
6190         {
6191           focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
6192           gtk_widget_grab_focus (focus_child);
6193           break;
6194         }
6195
6196       while (tmp_list)
6197         {
6198           GtkTreeViewColumn *column;
6199
6200           if (dir == GTK_DIR_RIGHT)
6201             tmp_list = tmp_list->next;
6202           else
6203             tmp_list = tmp_list->prev;
6204
6205           if (tmp_list == NULL)
6206             {
6207               g_warning ("Internal button not found");
6208               break;
6209             }
6210           column = tmp_list->data;
6211           if (column->button &&
6212               column->visible &&
6213               GTK_WIDGET_CAN_FOCUS (column->button))
6214             {
6215               focus_child = column->button;
6216               gtk_widget_grab_focus (column->button);
6217               break;
6218             }
6219         }
6220       break;
6221     default:
6222       g_assert_not_reached ();
6223       break;
6224     }
6225
6226   /* if focus child is non-null, we assume it's been set to the current focus child
6227    */
6228   if (focus_child)
6229     {
6230       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
6231         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
6232           break;
6233
6234       tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
6235
6236       /* If the following isn't true, then the view is smaller then the scrollpane.
6237        */
6238       if ((focus_child->allocation.x + focus_child->allocation.width) <=
6239           (tree_view->priv->hadjustment->upper))
6240         {
6241           /* Scroll to the button, if needed */
6242           if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
6243               (focus_child->allocation.x + focus_child->allocation.width))
6244             gtk_adjustment_set_value (tree_view->priv->hadjustment,
6245                                       focus_child->allocation.x + focus_child->allocation.width -
6246                                       tree_view->priv->hadjustment->page_size);
6247           else if (tree_view->priv->hadjustment->value > focus_child->allocation.x)
6248             gtk_adjustment_set_value (tree_view->priv->hadjustment,
6249                                       focus_child->allocation.x);
6250         }
6251     }
6252
6253   return (focus_child != NULL);
6254 }
6255
6256 static gint
6257 gtk_tree_view_focus (GtkWidget        *widget,
6258                      GtkDirectionType  direction)
6259 {
6260   GtkTreeView *tree_view;
6261   GtkWidget *focus_child;
6262   GtkContainer *container;
6263
6264   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
6265   g_return_val_if_fail (GTK_WIDGET_VISIBLE (widget), FALSE);
6266
6267   container = GTK_CONTAINER (widget);
6268   tree_view = GTK_TREE_VIEW (widget);
6269
6270   if (!GTK_WIDGET_IS_SENSITIVE (container))
6271     return FALSE;
6272
6273   focus_child = container->focus_child;
6274
6275   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
6276   /* Case 1.  Headers currently have focus. */
6277   if (focus_child)
6278     {
6279       switch (direction)
6280         {
6281         case GTK_DIR_LEFT:
6282         case GTK_DIR_RIGHT:
6283           gtk_tree_view_header_focus (tree_view, direction);
6284           return TRUE;
6285         case GTK_DIR_TAB_BACKWARD:
6286         case GTK_DIR_UP:
6287           return FALSE;
6288         case GTK_DIR_TAB_FORWARD:
6289         case GTK_DIR_DOWN:
6290           if (tree_view->priv->tree == NULL)
6291             return FALSE;
6292           gtk_widget_grab_focus (widget);
6293           return TRUE;
6294         }
6295     }
6296
6297   /* Case 2. We don't have focus at all. */
6298   if (!GTK_WIDGET_HAS_FOCUS (container))
6299     {
6300       if (tree_view->priv->tree == NULL &&
6301           (direction == GTK_DIR_TAB_BACKWARD ||
6302            direction == GTK_DIR_UP))
6303         return gtk_tree_view_header_focus (tree_view, direction);
6304       if (((direction == GTK_DIR_TAB_FORWARD) ||
6305            (direction == GTK_DIR_RIGHT) ||
6306            (direction == GTK_DIR_DOWN) ||
6307            (direction == GTK_DIR_LEFT)) &&
6308           gtk_tree_view_header_focus (tree_view, direction))
6309         return TRUE;
6310
6311       if (tree_view->priv->tree == NULL)
6312         return FALSE;
6313       gtk_widget_grab_focus (widget);
6314       return TRUE;
6315     }
6316
6317   /* Case 3. We have focus already. */
6318   if (tree_view->priv->tree == NULL)
6319     return gtk_tree_view_header_focus (tree_view, direction);
6320
6321   if (direction == GTK_DIR_TAB_BACKWARD)
6322     return (gtk_tree_view_header_focus (tree_view, direction));
6323   else if (direction == GTK_DIR_TAB_FORWARD)
6324     return FALSE;
6325
6326   /* Other directions caught by the keybindings */
6327   gtk_widget_grab_focus (widget);
6328   return TRUE;
6329 }
6330
6331 static void
6332 gtk_tree_view_grab_focus (GtkWidget *widget)
6333 {
6334   (* GTK_WIDGET_CLASS (parent_class)->grab_focus) (widget);
6335
6336   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
6337 }
6338
6339 static void
6340 gtk_tree_view_style_set (GtkWidget *widget,
6341                          GtkStyle *previous_style)
6342 {
6343   GtkTreeView *tree_view;
6344   GList *list;
6345   GtkTreeViewColumn *column;
6346
6347   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
6348
6349   tree_view = GTK_TREE_VIEW (widget);
6350
6351   if (GTK_WIDGET_REALIZED (widget))
6352     {
6353       gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
6354       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
6355     }
6356
6357   gtk_widget_style_get (widget,
6358                         "expander_size", &tree_view->priv->expander_size,
6359                         NULL);
6360   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
6361
6362   for (list = tree_view->priv->columns; list; list = list->next)
6363     {
6364       column = list->data;
6365       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6366     }
6367
6368   tree_view->priv->fixed_height = -1;
6369   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
6370
6371   gtk_widget_queue_resize (widget);
6372 }
6373
6374
6375 static void
6376 gtk_tree_view_set_focus_child (GtkContainer *container,
6377                                GtkWidget    *child)
6378 {
6379   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
6380   GList *list;
6381
6382   for (list = tree_view->priv->columns; list; list = list->next)
6383     {
6384       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
6385         {
6386           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
6387           break;
6388         }
6389     }
6390
6391   (* parent_class->set_focus_child) (container, child);
6392 }
6393
6394 static void
6395 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
6396                                GtkAdjustment *hadj,
6397                                GtkAdjustment *vadj)
6398 {
6399   gboolean need_adjust = FALSE;
6400
6401   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6402
6403   if (hadj)
6404     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
6405   else
6406     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
6407   if (vadj)
6408     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
6409   else
6410     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
6411
6412   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
6413     {
6414       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
6415                                             gtk_tree_view_adjustment_changed,
6416                                             tree_view);
6417       g_object_unref (tree_view->priv->hadjustment);
6418     }
6419
6420   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
6421     {
6422       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
6423                                             gtk_tree_view_adjustment_changed,
6424                                             tree_view);
6425       g_object_unref (tree_view->priv->vadjustment);
6426     }
6427
6428   if (tree_view->priv->hadjustment != hadj)
6429     {
6430       tree_view->priv->hadjustment = hadj;
6431       g_object_ref (tree_view->priv->hadjustment);
6432       gtk_object_sink (GTK_OBJECT (tree_view->priv->hadjustment));
6433
6434       g_signal_connect (tree_view->priv->hadjustment, "value_changed",
6435                         G_CALLBACK (gtk_tree_view_adjustment_changed),
6436                         tree_view);
6437       need_adjust = TRUE;
6438     }
6439
6440   if (tree_view->priv->vadjustment != vadj)
6441     {
6442       tree_view->priv->vadjustment = vadj;
6443       g_object_ref (tree_view->priv->vadjustment);
6444       gtk_object_sink (GTK_OBJECT (tree_view->priv->vadjustment));
6445
6446       g_signal_connect (tree_view->priv->vadjustment, "value_changed",
6447                         G_CALLBACK (gtk_tree_view_adjustment_changed),
6448                         tree_view);
6449       need_adjust = TRUE;
6450     }
6451
6452   if (need_adjust)
6453     gtk_tree_view_adjustment_changed (NULL, tree_view);
6454 }
6455
6456
6457 static gboolean
6458 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
6459                                 GtkMovementStep    step,
6460                                 gint               count)
6461 {
6462   GdkModifierType state;
6463
6464   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
6465   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
6466                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
6467                         step == GTK_MOVEMENT_DISPLAY_LINES ||
6468                         step == GTK_MOVEMENT_PAGES ||
6469                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
6470
6471   if (tree_view->priv->tree == NULL)
6472     return FALSE;
6473   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (tree_view)))
6474     return FALSE;
6475
6476   gtk_tree_view_stop_editing (tree_view, FALSE);
6477   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
6478   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6479
6480   if (gtk_get_current_event_state (&state))
6481     {
6482       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
6483         tree_view->priv->ctrl_pressed = TRUE;
6484       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
6485         tree_view->priv->shift_pressed = TRUE;
6486     }
6487   /* else we assume not pressed */
6488
6489   switch (step)
6490     {
6491       /* currently we make no distinction.  When we go bi-di, we need to */
6492     case GTK_MOVEMENT_LOGICAL_POSITIONS:
6493     case GTK_MOVEMENT_VISUAL_POSITIONS:
6494       gtk_tree_view_move_cursor_left_right (tree_view, count);
6495       break;
6496     case GTK_MOVEMENT_DISPLAY_LINES:
6497       gtk_tree_view_move_cursor_up_down (tree_view, count);
6498       break;
6499     case GTK_MOVEMENT_PAGES:
6500       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
6501       break;
6502     case GTK_MOVEMENT_BUFFER_ENDS:
6503       gtk_tree_view_move_cursor_start_end (tree_view, count);
6504       break;
6505     default:
6506       g_assert_not_reached ();
6507     }
6508
6509   tree_view->priv->ctrl_pressed = FALSE;
6510   tree_view->priv->shift_pressed = FALSE;
6511
6512   return TRUE;
6513 }
6514
6515 static void
6516 gtk_tree_view_put (GtkTreeView *tree_view,
6517                    GtkWidget   *child_widget,
6518                    gint         x,
6519                    gint         y,
6520                    gint         width,
6521                    gint         height)
6522 {
6523   GtkTreeViewChild *child;
6524
6525   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6526   g_return_if_fail (GTK_IS_WIDGET (child_widget));
6527
6528   child = g_new (GtkTreeViewChild, 1);
6529
6530   child->widget = child_widget;
6531   child->x = x;
6532   child->y = y;
6533   child->width = width;
6534   child->height = height;
6535
6536   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
6537
6538   if (GTK_WIDGET_REALIZED (tree_view))
6539     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
6540
6541   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
6542 }
6543
6544 void
6545 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
6546                                   GtkWidget   *widget,
6547                                   gint         x,
6548                                   gint         y,
6549                                   gint         width,
6550                                   gint         height)
6551 {
6552   GtkTreeViewChild *child = NULL;
6553   GList *list;
6554   GdkRectangle allocation;
6555
6556   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6557   g_return_if_fail (GTK_IS_WIDGET (widget));
6558
6559   for (list = tree_view->priv->children; list; list = list->next)
6560     {
6561       if (((GtkTreeViewChild *)list->data)->widget == widget)
6562         {
6563           child = list->data;
6564           break;
6565         }
6566     }
6567   if (child == NULL)
6568     return;
6569
6570   allocation.x = child->x = x;
6571   allocation.y = child->y = y;
6572   allocation.width = child->width = width;
6573   allocation.height = child->height = height;
6574
6575   if (GTK_WIDGET_REALIZED (widget))
6576     gtk_widget_size_allocate (widget, &allocation);
6577 }
6578
6579
6580 /* TreeModel Callbacks
6581  */
6582
6583 static void
6584 gtk_tree_view_row_changed (GtkTreeModel *model,
6585                            GtkTreePath  *path,
6586                            GtkTreeIter  *iter,
6587                            gpointer      data)
6588 {
6589   GtkTreeView *tree_view = (GtkTreeView *)data;
6590   GtkRBTree *tree;
6591   GtkRBNode *node;
6592   gboolean free_path = FALSE;
6593   gint vertical_separator;
6594   GList *list;
6595
6596   g_return_if_fail (path != NULL || iter != NULL);
6597
6598   if (!GTK_WIDGET_REALIZED (tree_view))
6599     /* We can just ignore ::changed signals if we aren't realized, as we don't care about sizes
6600      */
6601     return;
6602
6603   if (tree_view->priv->edited_column)
6604     gtk_tree_view_stop_editing (tree_view, TRUE);
6605
6606   gtk_widget_style_get (GTK_WIDGET (data), "vertical_separator", &vertical_separator, NULL);
6607
6608   if (path == NULL)
6609     {
6610       path = gtk_tree_model_get_path (model, iter);
6611       free_path = TRUE;
6612     }
6613   else if (iter == NULL)
6614     gtk_tree_model_get_iter (model, iter, path);
6615
6616   if (_gtk_tree_view_find_node (tree_view,
6617                                 path,
6618                                 &tree,
6619                                 &node))
6620     /* We aren't actually showing the node */
6621     goto done;
6622
6623   if (tree == NULL)
6624     goto done;
6625
6626   if (tree_view->priv->fixed_height_mode
6627       && tree_view->priv->fixed_height >= 0)
6628     {
6629       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
6630     }
6631   else
6632     {
6633       _gtk_rbtree_node_mark_invalid (tree, node);
6634       for (list = tree_view->priv->columns; list; list = list->next)
6635         {
6636           GtkTreeViewColumn *column;
6637
6638           column = list->data;
6639           if (! column->visible)
6640             continue;
6641
6642           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
6643             {
6644               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6645             }
6646         }
6647     }
6648
6649  done:
6650   if (!tree_view->priv->fixed_height_mode)
6651     install_presize_handler (tree_view);
6652   if (free_path)
6653     gtk_tree_path_free (path);
6654 }
6655
6656 static void
6657 gtk_tree_view_row_inserted (GtkTreeModel *model,
6658                             GtkTreePath  *path,
6659                             GtkTreeIter  *iter,
6660                             gpointer      data)
6661 {
6662   GtkTreeView *tree_view = (GtkTreeView *) data;
6663   gint *indices;
6664   GtkRBTree *tmptree, *tree;
6665   GtkRBNode *tmpnode = NULL;
6666   gint depth;
6667   gint i = 0;
6668   gboolean free_path = FALSE;
6669
6670   g_return_if_fail (path != NULL || iter != NULL);
6671
6672   if (path == NULL)
6673     {
6674       path = gtk_tree_model_get_path (model, iter);
6675       free_path = TRUE;
6676     }
6677   else if (iter == NULL)
6678     gtk_tree_model_get_iter (model, iter, path);
6679
6680   if (tree_view->priv->tree == NULL)
6681     tree_view->priv->tree = _gtk_rbtree_new ();
6682
6683   tmptree = tree = tree_view->priv->tree;
6684
6685   /* Update all row-references */
6686   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
6687   depth = gtk_tree_path_get_depth (path);
6688   indices = gtk_tree_path_get_indices (path);
6689
6690   /* First, find the parent tree */
6691   while (i < depth - 1)
6692     {
6693       if (tmptree == NULL)
6694         {
6695           /* We aren't showing the node */
6696           goto done;
6697         }
6698
6699       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
6700       if (tmpnode == NULL)
6701         {
6702           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
6703                      "This possibly means that a GtkTreeModel inserted a child node\n" \
6704                      "before the parent was inserted.");
6705           goto done;
6706         }
6707       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
6708         {
6709           /* FIXME enforce correct behavior on model, probably */
6710           /* In theory, the model should have emitted has_child_toggled here.  We
6711            * try to catch it anyway, just to be safe, in case the model hasn't.
6712            */
6713           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
6714                                                            tree,
6715                                                            tmpnode);
6716           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
6717           gtk_tree_path_free (tmppath);
6718           goto done;
6719         }
6720
6721       tmptree = tmpnode->children;
6722       tree = tmptree;
6723       i++;
6724     }
6725
6726   if (tree == NULL)
6727     goto done;
6728
6729   /* ref the node */
6730   gtk_tree_model_ref_node (tree_view->priv->model, iter);
6731   if (indices[depth - 1] == 0)
6732     {
6733       tmpnode = _gtk_rbtree_find_count (tree, 1);
6734       _gtk_rbtree_insert_before (tree, tmpnode, 0, FALSE);
6735     }
6736   else
6737     {
6738       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
6739       _gtk_rbtree_insert_after (tree, tmpnode, 0, FALSE);
6740     }
6741
6742   if (tree_view->priv->fixed_height_mode
6743       && tree_view->priv->fixed_height >= 0)
6744     _gtk_rbtree_node_set_height (tree, tmpnode, tree_view->priv->fixed_height);
6745
6746  done:
6747   install_presize_handler (tree_view);
6748   if (free_path)
6749     gtk_tree_path_free (path);
6750 }
6751
6752 static void
6753 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
6754                                      GtkTreePath  *path,
6755                                      GtkTreeIter  *iter,
6756                                      gpointer      data)
6757 {
6758   GtkTreeView *tree_view = (GtkTreeView *)data;
6759   GtkTreeIter real_iter;
6760   gboolean has_child;
6761   GtkRBTree *tree;
6762   GtkRBNode *node;
6763   gboolean free_path = FALSE;
6764
6765   g_return_if_fail (path != NULL || iter != NULL);
6766
6767   if (iter)
6768     real_iter = *iter;
6769
6770   if (path == NULL)
6771     {
6772       path = gtk_tree_model_get_path (model, iter);
6773       free_path = TRUE;
6774     }
6775   else if (iter == NULL)
6776     gtk_tree_model_get_iter (model, &real_iter, path);
6777
6778   if (_gtk_tree_view_find_node (tree_view,
6779                                 path,
6780                                 &tree,
6781                                 &node))
6782     /* We aren't actually showing the node */
6783     goto done;
6784
6785   if (tree == NULL)
6786     goto done;
6787
6788   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
6789   /* Sanity check.
6790    */
6791   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
6792     goto done;
6793
6794   if (has_child)
6795     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
6796   else
6797     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
6798
6799   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
6800     {
6801       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
6802       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
6803         {
6804           GList *list;
6805
6806           for (list = tree_view->priv->columns; list; list = list->next)
6807             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
6808               {
6809                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
6810                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
6811                 break;
6812               }
6813         }
6814       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6815     }
6816   else
6817     {
6818       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6819     }
6820
6821  done:
6822   if (free_path)
6823     gtk_tree_path_free (path);
6824 }
6825
6826 static void
6827 count_children_helper (GtkRBTree *tree,
6828                        GtkRBNode *node,
6829                        gpointer   data)
6830 {
6831   if (node->children)
6832     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
6833   (*((gint *)data))++;
6834 }
6835
6836 static void
6837 check_selection_helper (GtkRBTree *tree,
6838                         GtkRBNode *node,
6839                         gpointer   data)
6840 {
6841   gint *value = (gint *)data;
6842
6843   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
6844
6845   if (node->children && !*value)
6846     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
6847 }
6848
6849 static void
6850 gtk_tree_view_row_deleted (GtkTreeModel *model,
6851                            GtkTreePath  *path,
6852                            gpointer      data)
6853 {
6854   GtkTreeView *tree_view = (GtkTreeView *)data;
6855   GtkRBTree *tree;
6856   GtkRBNode *node;
6857   GList *list;
6858   gint selection_changed = FALSE;
6859
6860   g_return_if_fail (path != NULL);
6861
6862   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
6863
6864   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6865     return;
6866
6867   if (tree == NULL)
6868     return;
6869
6870   /* check if the selection has been changed */
6871   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
6872                         check_selection_helper, &selection_changed);
6873
6874   for (list = tree_view->priv->columns; list; list = list->next)
6875     if (((GtkTreeViewColumn *)list->data)->visible &&
6876         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
6877       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
6878
6879   /* Ensure we don't have a dangling pointer to a dead node */
6880   ensure_unprelighted (tree_view);
6881
6882   /* Cancel editting if we've started */
6883   gtk_tree_view_stop_editing (tree_view, TRUE);
6884
6885   /* If we have a node expanded/collapsed timeout, remove it */
6886   if (tree_view->priv->expand_collapse_timeout != 0)
6887     {
6888       g_source_remove (tree_view->priv->expand_collapse_timeout);
6889       tree_view->priv->expand_collapse_timeout = 0;
6890
6891       /* Reset node */
6892       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
6893       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
6894       tree_view->priv->expanded_collapsed_node = NULL;
6895     }
6896
6897   if (tree_view->priv->destroy_count_func)
6898     {
6899       gint child_count = 0;
6900       if (node->children)
6901         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
6902       (* tree_view->priv->destroy_count_func) (tree_view, path, child_count, tree_view->priv->destroy_count_data);
6903     }
6904
6905   if (tree->root->count == 1)
6906     {
6907       if (tree_view->priv->tree == tree)
6908         tree_view->priv->tree = NULL;
6909
6910       _gtk_rbtree_remove (tree);
6911     }
6912   else
6913     {
6914       _gtk_rbtree_remove_node (tree, node);
6915     }
6916
6917   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
6918     {
6919       gtk_tree_row_reference_free (tree_view->priv->top_row);
6920       tree_view->priv->top_row = NULL;
6921     }
6922
6923   install_scroll_sync_handler (tree_view);
6924
6925   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6926
6927   if (selection_changed)
6928     g_signal_emit_by_name (tree_view->priv->selection, "changed");
6929 }
6930
6931 static void
6932 cancel_arrow_animation (GtkTreeView *tree_view)
6933 {
6934   if (tree_view->priv->expand_collapse_timeout)
6935     {
6936       while (do_expand_collapse (tree_view));
6937
6938       g_source_remove (tree_view->priv->expand_collapse_timeout);
6939       tree_view->priv->expand_collapse_timeout = 0;
6940     }
6941 }
6942
6943 static void
6944 gtk_tree_view_rows_reordered (GtkTreeModel *model,
6945                               GtkTreePath  *parent,
6946                               GtkTreeIter  *iter,
6947                               gint         *new_order,
6948                               gpointer      data)
6949 {
6950   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
6951   GtkRBTree *tree;
6952   GtkRBNode *node;
6953   gint len;
6954
6955   len = gtk_tree_model_iter_n_children (model, iter);
6956
6957   if (len < 2)
6958     return;
6959
6960   gtk_tree_row_reference_reordered (G_OBJECT (data),
6961                                     parent,
6962                                     iter,
6963                                     new_order);
6964
6965   if (_gtk_tree_view_find_node (tree_view,
6966                                 parent,
6967                                 &tree,
6968                                 &node))
6969     return;
6970
6971   /* We need to special case the parent path */
6972   if (tree == NULL)
6973     tree = tree_view->priv->tree;
6974   else
6975     tree = node->children;
6976
6977   if (tree == NULL)
6978     return;
6979
6980   if (tree_view->priv->edited_column)
6981     gtk_tree_view_stop_editing (tree_view, TRUE);
6982
6983   /* we need to be unprelighted */
6984   ensure_unprelighted (tree_view);
6985
6986   /* clear the timeout */
6987   cancel_arrow_animation (tree_view);
6988
6989   _gtk_rbtree_reorder (tree, new_order, len);
6990
6991   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6992
6993   gtk_tree_view_dy_to_top_row (tree_view);
6994 }
6995
6996
6997 /* Internal tree functions
6998  */
6999
7000
7001 static void
7002 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
7003                                      GtkRBTree         *tree,
7004                                      GtkTreeViewColumn *column,
7005                                      gint              *x1,
7006                                      gint              *x2)
7007 {
7008   GtkTreeViewColumn *tmp_column = NULL;
7009   gint total_width;
7010   GList *list;
7011   gboolean rtl;
7012
7013   if (x1)
7014     *x1 = 0;
7015
7016   if (x2)
7017     *x2 = 0;
7018
7019   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7020
7021   total_width = 0;
7022   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
7023        list;
7024        list = (rtl ? list->prev : list->next))
7025     {
7026       tmp_column = list->data;
7027
7028       if (tmp_column == column)
7029         break;
7030
7031       if (tmp_column->visible)
7032         total_width += tmp_column->width;
7033     }
7034
7035   if (tmp_column != column)
7036     {
7037       g_warning (G_STRLOC": passed-in column isn't in the tree");
7038       return;
7039     }
7040
7041   if (x1)
7042     *x1 = total_width;
7043
7044   if (x2)
7045     {
7046       if (column->visible)
7047         *x2 = total_width + column->width;
7048       else
7049         *x2 = total_width; /* width of 0 */
7050     }
7051 }
7052 static void
7053 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
7054                                 GtkRBTree   *tree,
7055                                 gint        *x1,
7056                                 gint        *x2)
7057 {
7058   gint x_offset = 0;
7059   GList *list;
7060   GtkTreeViewColumn *tmp_column = NULL;
7061   gint total_width;
7062   gboolean indent_expanders;
7063   gboolean rtl;
7064
7065   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7066
7067   total_width = 0;
7068   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
7069        list;
7070        list = (rtl ? list->prev : list->next))
7071     {
7072       tmp_column = list->data;
7073
7074       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
7075         {
7076           if (rtl)
7077             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
7078           else
7079             x_offset = total_width;
7080           break;
7081         }
7082
7083       if (tmp_column->visible)
7084         total_width += tmp_column->width;
7085     }
7086
7087   gtk_widget_style_get (GTK_WIDGET (tree_view),
7088                         "indent_expanders", &indent_expanders,
7089                         NULL);
7090
7091   if (indent_expanders)
7092     {
7093       if (rtl)
7094         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
7095       else
7096         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
7097     }
7098   if (x1)
7099     {
7100       *x1 = x_offset;
7101     }
7102
7103   if (tmp_column && tmp_column->visible)
7104     {
7105       /* +1 because x2 isn't included in the range. */
7106       if (x2)
7107         *x2 = *x1 + tree_view->priv->expander_size + 1;
7108     }
7109   else
7110     {
7111       /* return an empty range, the expander column is hidden */
7112       if (x2)
7113         *x2 = *x1;
7114     }
7115 }
7116
7117 static void
7118 gtk_tree_view_build_tree (GtkTreeView *tree_view,
7119                           GtkRBTree   *tree,
7120                           GtkTreeIter *iter,
7121                           gint         depth,
7122                           gboolean     recurse)
7123 {
7124   GtkRBNode *temp = NULL;
7125   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
7126
7127   do
7128     {
7129       gtk_tree_model_ref_node (tree_view->priv->model, iter);
7130       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
7131
7132       if (is_list)
7133         continue;
7134
7135       if (recurse)
7136         {
7137           GtkTreeIter child;
7138
7139           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
7140             {
7141               temp->children = _gtk_rbtree_new ();
7142               temp->children->parent_tree = tree;
7143               temp->children->parent_node = temp;
7144               gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
7145             }
7146         }
7147       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
7148         {
7149           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
7150             temp->flags ^= GTK_RBNODE_IS_PARENT;
7151         }
7152     }
7153   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
7154 }
7155
7156 /* If height is non-NULL, then we set it to be the new height.  if it's all
7157  * dirty, then height is -1.  We know we'll remeasure dirty rows, anyways.
7158  */
7159 static gboolean
7160 gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
7161                                    GtkTreeIter *iter,
7162                                    gint         depth,
7163                                    gint        *height,
7164                                    GtkRBNode   *node)
7165 {
7166   GtkTreeViewColumn *column;
7167   GList *list;
7168   gboolean retval = FALSE;
7169   gint tmpheight;
7170   gint horizontal_separator;
7171
7172   gtk_widget_style_get (GTK_WIDGET (tree_view),
7173                         "horizontal_separator", &horizontal_separator,
7174                         NULL);
7175
7176   if (height)
7177     *height = -1;
7178
7179   for (list = tree_view->priv->columns; list; list = list->next)
7180     {
7181       gint width;
7182       column = list->data;
7183       if (column->dirty == TRUE)
7184         continue;
7185       if (height == NULL && column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
7186         continue;
7187       if (!column->visible)
7188         continue;
7189
7190       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
7191                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
7192                                                node->children?TRUE:FALSE);
7193
7194       if (height)
7195         {
7196           gtk_tree_view_column_cell_get_size (column,
7197                                               NULL, NULL, NULL,
7198                                               &width, &tmpheight);
7199           *height = MAX (*height, tmpheight);
7200         }
7201       else
7202         {
7203           gtk_tree_view_column_cell_get_size (column,
7204                                               NULL, NULL, NULL,
7205                                               &width, NULL);
7206         }
7207
7208       if (gtk_tree_view_is_expander_column (tree_view, column) &&
7209           TREE_VIEW_DRAW_EXPANDERS (tree_view))
7210         {
7211           if (depth * tree_view->priv->expander_size + horizontal_separator + width > column->requested_width)
7212             {
7213               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7214               retval = TRUE;
7215             }
7216         }
7217       else
7218         {
7219           if (horizontal_separator + width > column->requested_width)
7220             {
7221               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7222               retval = TRUE;
7223             }
7224         }
7225     }
7226
7227   return retval;
7228 }
7229
7230 static void
7231 gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
7232                               GtkRBTree   *tree,
7233                               GtkTreeIter *iter,
7234                               gint         depth)
7235 {
7236   GtkRBNode *temp = tree->root;
7237   GtkTreeViewColumn *column;
7238   GList *list;
7239   GtkTreeIter child;
7240   gboolean is_all_dirty;
7241
7242   TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
7243
7244   while (temp->left != tree->nil)
7245     temp = temp->left;
7246
7247   do
7248     {
7249       TREE_VIEW_INTERNAL_ASSERT_VOID (temp != NULL);
7250       is_all_dirty = TRUE;
7251       for (list = tree_view->priv->columns; list; list = list->next)
7252         {
7253           column = list->data;
7254           if (column->dirty == FALSE)
7255             {
7256               is_all_dirty = FALSE;
7257               break;
7258             }
7259         }
7260
7261       if (is_all_dirty)
7262         return;
7263
7264       gtk_tree_view_discover_dirty_iter (tree_view,
7265                                          iter,
7266                                          depth,
7267                                          NULL,
7268                                          temp);
7269       if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter) &&
7270           temp->children != NULL)
7271         gtk_tree_view_discover_dirty (tree_view, temp->children, &child, depth + 1);
7272       temp = _gtk_rbtree_next (tree, temp);
7273     }
7274   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
7275 }
7276
7277
7278 /* Make sure the node is visible vertically */
7279 static void
7280 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
7281                                   GtkRBTree   *tree,
7282                                   GtkRBNode   *node)
7283 {
7284   GtkTreePath *path = NULL;
7285
7286   if (!GTK_WIDGET_REALIZED (tree_view))
7287     return;
7288
7289   path = _gtk_tree_view_find_path (tree_view, tree, node);
7290
7291   if (path)
7292     {
7293       /* We process updates because we want to clear old selected items when we scroll.
7294        * if this is removed, we get a "selection streak" at the bottom. */
7295       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
7296       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
7297       gtk_tree_path_free (path);
7298     }
7299 }
7300
7301 static void
7302 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
7303                                     GtkTreeViewColumn *column)
7304 {
7305   if (column == NULL)
7306     return;
7307   if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
7308       (column->button->allocation.x + column->button->allocation.width))
7309     gtk_adjustment_set_value (tree_view->priv->hadjustment,
7310                               column->button->allocation.x + column->button->allocation.width -
7311                               tree_view->priv->hadjustment->page_size);
7312   else if (tree_view->priv->hadjustment->value > column->button->allocation.x)
7313     gtk_adjustment_set_value (tree_view->priv->hadjustment,
7314                               column->button->allocation.x);
7315 }
7316
7317 /* This function could be more efficient.  I'll optimize it if profiling seems
7318  * to imply that it is important */
7319 GtkTreePath *
7320 _gtk_tree_view_find_path (GtkTreeView *tree_view,
7321                           GtkRBTree   *tree,
7322                           GtkRBNode   *node)
7323 {
7324   GtkTreePath *path;
7325   GtkRBTree *tmp_tree;
7326   GtkRBNode *tmp_node, *last;
7327   gint count;
7328
7329   path = gtk_tree_path_new ();
7330
7331   g_return_val_if_fail (node != NULL, path);
7332   g_return_val_if_fail (node != tree->nil, path);
7333
7334   count = 1 + node->left->count;
7335
7336   last = node;
7337   tmp_node = node->parent;
7338   tmp_tree = tree;
7339   while (tmp_tree)
7340     {
7341       while (tmp_node != tmp_tree->nil)
7342         {
7343           if (tmp_node->right == last)
7344             count += 1 + tmp_node->left->count;
7345           last = tmp_node;
7346           tmp_node = tmp_node->parent;
7347         }
7348       gtk_tree_path_prepend_index (path, count - 1);
7349       last = tmp_tree->parent_node;
7350       tmp_tree = tmp_tree->parent_tree;
7351       if (last)
7352         {
7353           count = 1 + last->left->count;
7354           tmp_node = last->parent;
7355         }
7356     }
7357   return path;
7358 }
7359
7360 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
7361  * invalid (ie. points to a node that's not in the tree), *tree and *node are
7362  * both set to NULL.
7363  */
7364 gboolean
7365 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
7366                           GtkTreePath  *path,
7367                           GtkRBTree   **tree,
7368                           GtkRBNode   **node)
7369 {
7370   GtkRBNode *tmpnode = NULL;
7371   GtkRBTree *tmptree = tree_view->priv->tree;
7372   gint *indices = gtk_tree_path_get_indices (path);
7373   gint depth = gtk_tree_path_get_depth (path);
7374   gint i = 0;
7375
7376   *node = NULL;
7377   *tree = NULL;
7378
7379   if (depth == 0 || tmptree == NULL)
7380     return FALSE;
7381   do
7382     {
7383       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
7384       ++i;
7385       if (tmpnode == NULL)
7386         {
7387           *tree = NULL;
7388           *node = NULL;
7389           return FALSE;
7390         }
7391       if (i >= depth)
7392         {
7393           *tree = tmptree;
7394           *node = tmpnode;
7395           return FALSE;
7396         }
7397       *tree = tmptree;
7398       *node = tmpnode;
7399       tmptree = tmpnode->children;
7400       if (tmptree == NULL)
7401         return TRUE;
7402     }
7403   while (1);
7404 }
7405
7406 static gboolean
7407 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
7408                                   GtkTreeViewColumn *column)
7409 {
7410   GList *list;
7411
7412   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
7413     return FALSE;
7414
7415   if (tree_view->priv->expander_column != NULL)
7416     {
7417       if (tree_view->priv->expander_column == column)
7418         return TRUE;
7419       return FALSE;
7420     }
7421   else
7422     {
7423       for (list = tree_view->priv->columns;
7424            list;
7425            list = list->next)
7426         if (((GtkTreeViewColumn *)list->data)->visible)
7427           break;
7428       if (list && list->data == column)
7429         return TRUE;
7430     }
7431   return FALSE;
7432 }
7433
7434 static void
7435 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
7436                                 guint           keyval,
7437                                 guint           modmask,
7438                                 GtkMovementStep step,
7439                                 gint            count)
7440 {
7441
7442   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
7443                                 "move_cursor", 2,
7444                                 G_TYPE_ENUM, step,
7445                                 G_TYPE_INT, count);
7446
7447   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
7448                                 "move_cursor", 2,
7449                                 G_TYPE_ENUM, step,
7450                                 G_TYPE_INT, count);
7451
7452   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
7453    return;
7454
7455   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
7456                                 "move_cursor", 2,
7457                                 G_TYPE_ENUM, step,
7458                                 G_TYPE_INT, count);
7459
7460   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
7461                                 "move_cursor", 2,
7462                                 G_TYPE_ENUM, step,
7463                                 G_TYPE_INT, count);
7464 }
7465
7466 static gint
7467 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
7468                                  GtkTreeIter  *iter,
7469                                  GtkRBTree    *tree,
7470                                  GtkRBNode    *node)
7471 {
7472   gint retval = FALSE;
7473   do
7474     {
7475       g_return_val_if_fail (node != NULL, FALSE);
7476
7477       if (node->children)
7478         {
7479           GtkTreeIter child;
7480           GtkRBTree *new_tree;
7481           GtkRBNode *new_node;
7482
7483           new_tree = node->children;
7484           new_node = new_tree->root;
7485
7486           while (new_node && new_node->left != new_tree->nil)
7487             new_node = new_node->left;
7488
7489           if (!gtk_tree_model_iter_children (model, &child, iter))
7490             return FALSE;
7491
7492           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
7493         }
7494
7495       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
7496         retval = TRUE;
7497       gtk_tree_model_unref_node (model, iter);
7498       node = _gtk_rbtree_next (tree, node);
7499     }
7500   while (gtk_tree_model_iter_next (model, iter));
7501
7502   return retval;
7503 }
7504
7505 static gint
7506 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
7507                                               GtkRBTree   *tree)
7508 {
7509   GtkTreeIter iter;
7510   GtkTreePath *path;
7511   GtkRBNode *node;
7512   gint retval;
7513
7514   if (!tree)
7515     return FALSE;
7516
7517   node = tree->root;
7518   while (node && node->left != tree->nil)
7519     node = node->left;
7520
7521   g_return_val_if_fail (node != NULL, FALSE);
7522   path = _gtk_tree_view_find_path (tree_view, tree, node);
7523   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
7524                            &iter, path);
7525   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
7526   gtk_tree_path_free (path);
7527
7528   return retval;
7529 }
7530
7531 static void
7532 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
7533                                     GtkTreeViewColumn *column)
7534 {
7535   GtkTreeViewColumn *left_column;
7536   GtkTreeViewColumn *cur_column = NULL;
7537   GtkTreeViewColumnReorder *reorder;
7538   gboolean rtl;
7539   GList *tmp_list;
7540   gint left;
7541
7542   /* We want to precalculate the motion list such that we know what column slots
7543    * are available.
7544    */
7545   left_column = NULL;
7546   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7547
7548   /* First, identify all possible drop spots */
7549   if (rtl)
7550     tmp_list = g_list_last (tree_view->priv->columns);
7551   else
7552     tmp_list = g_list_first (tree_view->priv->columns);
7553
7554   while (tmp_list)
7555     {
7556       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7557       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
7558
7559       if (cur_column->visible == FALSE)
7560         continue;
7561
7562       /* If it's not the column moving and func tells us to skip over the column, we continue. */
7563       if (left_column != column && cur_column != column &&
7564           tree_view->priv->column_drop_func &&
7565           ! (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
7566         {
7567           left_column = cur_column;
7568           continue;
7569         }
7570       reorder = g_new (GtkTreeViewColumnReorder, 1);
7571       reorder->left_column = left_column;
7572       left_column = reorder->right_column = cur_column;
7573
7574       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
7575     }
7576
7577   /* Add the last one */
7578   if (tree_view->priv->column_drop_func == NULL ||
7579       ((left_column != column) &&
7580        (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data)))
7581     {
7582       reorder = g_new (GtkTreeViewColumnReorder, 1);
7583       reorder->left_column = left_column;
7584       reorder->right_column = NULL;
7585       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
7586     }
7587
7588   /* We quickly check to see if it even makes sense to reorder columns. */
7589   /* If there is nothing that can be moved, then we return */
7590
7591   if (tree_view->priv->column_drag_info == NULL)
7592     return;
7593
7594   /* We know there are always 2 slots possbile, as you can always return column. */
7595   /* If that's all there is, return */
7596   if (tree_view->priv->column_drag_info->next->next == NULL &&
7597       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
7598       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column)
7599     {
7600       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
7601         g_free (tmp_list->data);
7602       g_list_free (tree_view->priv->column_drag_info);
7603       tree_view->priv->column_drag_info = NULL;
7604       return;
7605     }
7606   /* We fill in the ranges for the columns, now that we've isolated them */
7607   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
7608
7609   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
7610     {
7611       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
7612
7613       reorder->left_align = left;
7614       if (tmp_list->next != NULL)
7615         {
7616           g_assert (tmp_list->next->data);
7617           left = reorder->right_align = (reorder->right_column->button->allocation.x +
7618                                          reorder->right_column->button->allocation.width +
7619                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
7620         }
7621       else
7622         {
7623           gint width;
7624
7625           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
7626           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
7627         }
7628     }
7629 }
7630
7631 void
7632 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
7633                                   GtkTreeViewColumn *column)
7634 {
7635   GdkEvent *send_event;
7636   GtkAllocation allocation;
7637   gint x, y, width, height;
7638   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
7639   GdkDisplay *display = gdk_screen_get_display (screen);
7640
7641   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
7642
7643   gtk_tree_view_set_column_drag_info (tree_view, column);
7644
7645   if (tree_view->priv->column_drag_info == NULL)
7646     return;
7647
7648   if (tree_view->priv->drag_window == NULL)
7649     {
7650       GdkWindowAttr attributes;
7651       guint attributes_mask;
7652
7653       attributes.window_type = GDK_WINDOW_CHILD;
7654       attributes.wclass = GDK_INPUT_OUTPUT;
7655       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
7656       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
7657       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
7658       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
7659
7660       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
7661                                                      &attributes,
7662                                                      attributes_mask);
7663       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
7664     }
7665
7666   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
7667   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
7668
7669   gtk_grab_remove (column->button);
7670
7671   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
7672   send_event->crossing.send_event = TRUE;
7673   send_event->crossing.window = g_object_ref (column->button->window);
7674   send_event->crossing.subwindow = NULL;
7675   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
7676   send_event->crossing.time = GDK_CURRENT_TIME;
7677
7678   gtk_propagate_event (column->button, send_event);
7679   gdk_event_free (send_event);
7680
7681   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
7682   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
7683   send_event->button.send_event = TRUE;
7684   send_event->button.time = GDK_CURRENT_TIME;
7685   send_event->button.x = -1;
7686   send_event->button.y = -1;
7687   send_event->button.axes = NULL;
7688   send_event->button.state = 0;
7689   send_event->button.button = 1;
7690   send_event->button.device = gdk_display_get_core_pointer (display);
7691   send_event->button.x_root = 0;
7692   send_event->button.y_root = 0;
7693
7694   gtk_propagate_event (column->button, send_event);
7695   gdk_event_free (send_event);
7696
7697   gdk_window_move_resize (tree_view->priv->drag_window,
7698                           column->button->allocation.x,
7699                           0,
7700                           column->button->allocation.width,
7701                           column->button->allocation.height);
7702
7703   /* Kids, don't try this at home */
7704   g_object_ref (column->button);
7705   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
7706   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
7707   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
7708   g_object_unref (column->button);
7709
7710   tree_view->priv->drag_column_x = column->button->allocation.x;
7711   allocation = column->button->allocation;
7712   allocation.x = 0;
7713   gtk_widget_size_allocate (column->button, &allocation);
7714   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
7715
7716   tree_view->priv->drag_column = column;
7717   gdk_window_show (tree_view->priv->drag_window);
7718
7719   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
7720   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
7721
7722   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7723   while (gtk_events_pending ())
7724     gtk_main_iteration ();
7725
7726   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
7727   gdk_pointer_grab (tree_view->priv->drag_window,
7728                     FALSE,
7729                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
7730                     NULL, NULL, GDK_CURRENT_TIME);
7731   gdk_keyboard_grab (tree_view->priv->drag_window,
7732                      FALSE,
7733                      GDK_CURRENT_TIME);
7734
7735 }
7736
7737 static void
7738 gtk_tree_view_queue_draw_arrow (GtkTreeView      *tree_view,
7739                                 GtkRBTree        *tree,
7740                                 GtkRBNode        *node,
7741                                 GdkRectangle     *clip_rect)
7742 {
7743   GdkRectangle rect;
7744
7745   if (!GTK_WIDGET_REALIZED (tree_view))
7746     return;
7747
7748   rect.x = 0;
7749   rect.width = MAX (tree_view->priv->expander_size, GTK_WIDGET (tree_view)->allocation.width);
7750
7751   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
7752   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
7753
7754   if (clip_rect)
7755     {
7756       GdkRectangle new_rect;
7757
7758       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
7759
7760       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
7761     }
7762   else
7763     {
7764       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
7765     }
7766 }
7767
7768 void
7769 _gtk_tree_view_queue_draw_node (GtkTreeView  *tree_view,
7770                                 GtkRBTree    *tree,
7771                                 GtkRBNode    *node,
7772                                 GdkRectangle *clip_rect)
7773 {
7774   GdkRectangle rect;
7775
7776   if (!GTK_WIDGET_REALIZED (tree_view))
7777     return;
7778
7779   rect.x = 0;
7780   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
7781
7782   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
7783   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
7784
7785   if (clip_rect)
7786     {
7787       GdkRectangle new_rect;
7788
7789       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
7790
7791       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
7792     }
7793   else
7794     {
7795       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
7796     }
7797 }
7798
7799 static void
7800 gtk_tree_view_queue_draw_path (GtkTreeView      *tree_view,
7801                                GtkTreePath      *path,
7802                                GdkRectangle     *clip_rect)
7803 {
7804   GtkRBTree *tree = NULL;
7805   GtkRBNode *node = NULL;
7806
7807   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
7808
7809   if (tree)
7810     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
7811 }
7812
7813 /* x and y are the mouse position
7814  */
7815 static void
7816 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
7817                           GtkRBTree   *tree,
7818                           GtkRBNode   *node,
7819                           gint         x,
7820                           gint         y)
7821 {
7822   GdkRectangle area;
7823   GtkStateType state;
7824   GtkWidget *widget;
7825   gint x_offset = 0;
7826   gint vertical_separator;
7827   gint expander_size;
7828   GtkExpanderStyle expander_style;
7829
7830   gtk_widget_style_get (GTK_WIDGET (tree_view),
7831                         "vertical_separator", &vertical_separator,
7832                         NULL);
7833   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
7834
7835   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
7836     return;
7837
7838   widget = GTK_WIDGET (tree_view);
7839
7840   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, NULL);
7841
7842   area.x = x_offset;
7843   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
7844   area.width = expander_size + 2;
7845   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
7846
7847   if (node == tree_view->priv->button_pressed_node)
7848     {
7849       if (x >= area.x && x <= (area.x + area.width) &&
7850           y >= area.y && y <= (area.y + area.height))
7851         state = GTK_STATE_ACTIVE;
7852       else
7853         state = GTK_STATE_NORMAL;
7854     }
7855   else
7856     {
7857       if (node == tree_view->priv->prelight_node &&
7858           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
7859         state = GTK_STATE_PRELIGHT;
7860       else
7861         state = GTK_STATE_NORMAL;
7862     }
7863
7864   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
7865     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
7866   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
7867     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
7868   else if (node->children != NULL)
7869     expander_style = GTK_EXPANDER_EXPANDED;
7870   else
7871     expander_style = GTK_EXPANDER_COLLAPSED;
7872
7873   gtk_paint_expander (widget->style,
7874                       tree_view->priv->bin_window,
7875                       state,
7876                       &area,
7877                       widget,
7878                       "treeview",
7879                       area.x + area.width / 2,
7880                       area.y + area.height / 2,
7881                       expander_style);
7882 }
7883
7884 static void
7885 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
7886
7887 {
7888   GtkTreePath *cursor_path;
7889
7890   if ((tree_view->priv->tree == NULL) ||
7891       (! GTK_WIDGET_REALIZED (tree_view)))
7892     return;
7893
7894   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
7895
7896   cursor_path = NULL;
7897   if (tree_view->priv->cursor)
7898     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7899
7900   if (cursor_path == NULL)
7901     {
7902       cursor_path = gtk_tree_path_new_first ();
7903       gtk_tree_row_reference_free (tree_view->priv->cursor);
7904       tree_view->priv->cursor = NULL;
7905
7906       if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
7907         gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
7908       else
7909         gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
7910     }
7911   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7912   gtk_tree_path_free (cursor_path);
7913
7914   if (tree_view->priv->focus_column == NULL)
7915     {
7916       GList *list;
7917       for (list = tree_view->priv->columns; list; list = list->next)
7918         {
7919           if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
7920             {
7921               tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
7922               break;
7923             }
7924         }
7925     }
7926 }
7927
7928 static void
7929 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
7930                                    gint         count)
7931 {
7932   GtkRBTree *cursor_tree = NULL;
7933   GtkRBNode *cursor_node = NULL;
7934   GtkRBTree *new_cursor_tree = NULL;
7935   GtkRBNode *new_cursor_node = NULL;
7936   GtkTreePath *cursor_path = NULL;
7937
7938   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7939     return;
7940
7941   cursor_path = NULL;
7942   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
7943     /* FIXME: we lost the cursor; should we get the first? */
7944     return;
7945
7946   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7947   _gtk_tree_view_find_node (tree_view, cursor_path,
7948                             &cursor_tree, &cursor_node);
7949   gtk_tree_path_free (cursor_path);
7950
7951   if (cursor_tree == NULL)
7952     /* FIXME: we lost the cursor; should we get the first? */
7953     return;
7954   if (count == -1)
7955     _gtk_rbtree_prev_full (cursor_tree, cursor_node,
7956                            &new_cursor_tree, &new_cursor_node);
7957   else
7958     _gtk_rbtree_next_full (cursor_tree, cursor_node,
7959                            &new_cursor_tree, &new_cursor_node);
7960
7961   if (new_cursor_node)
7962     {
7963       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
7964       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
7965       gtk_tree_path_free (cursor_path);
7966     }
7967   else
7968     {
7969       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7970     }
7971
7972   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7973 }
7974
7975 static void
7976 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
7977                                         gint         count)
7978 {
7979   GtkRBTree *cursor_tree = NULL;
7980   GtkRBNode *cursor_node = NULL;
7981   GtkTreePath *cursor_path = NULL;
7982   gint y;
7983   gint vertical_separator;
7984
7985   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7986     return;
7987
7988   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
7989     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7990   else
7991     /* This is sorta weird.  Focus in should give us a cursor */
7992     return;
7993
7994   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
7995   _gtk_tree_view_find_node (tree_view, cursor_path,
7996                             &cursor_tree, &cursor_node);
7997
7998   gtk_tree_path_free (cursor_path);
7999
8000   if (cursor_tree == NULL)
8001     /* FIXME: we lost the cursor.  Should we try to get one? */
8002     return;
8003   g_return_if_fail (cursor_node != NULL);
8004
8005   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
8006   y += count * tree_view->priv->vadjustment->page_size;
8007   if (count > 0)
8008     y -= MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
8009               tree_view->priv->expander_size);
8010   else if (count < 0)
8011     y += MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
8012               tree_view->priv->expander_size);
8013   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
8014
8015   if (y > tree_view->priv->height)
8016     y = tree_view->priv->height - 1;
8017
8018   _gtk_rbtree_find_offset (tree_view->priv->tree, y, &cursor_tree, &cursor_node);
8019   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
8020   g_return_if_fail (cursor_path != NULL);
8021   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
8022   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
8023   gtk_tree_path_free (cursor_path);
8024 }
8025
8026 static void
8027 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
8028                                       gint         count)
8029 {
8030   GtkRBTree *cursor_tree = NULL;
8031   GtkRBNode *cursor_node = NULL;
8032   GtkTreePath *cursor_path = NULL;
8033   GtkTreeViewColumn *column;
8034   GtkTreeIter iter;
8035   GList *list;
8036   gboolean found_column = FALSE;
8037   gboolean rtl;
8038
8039   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8040
8041   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8042     return;
8043
8044   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8045     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8046   else
8047     return;
8048
8049   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
8050   if (cursor_tree == NULL)
8051     return;
8052   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
8053     {
8054       gtk_tree_path_free (cursor_path);
8055       return;
8056     }
8057   gtk_tree_path_free (cursor_path);
8058
8059   list = tree_view->priv->columns;
8060   if (tree_view->priv->focus_column)
8061     {
8062       for (list = tree_view->priv->columns; list; list = list->next)
8063         {
8064           if (list->data == tree_view->priv->focus_column)
8065             break;
8066         }
8067     }
8068
8069   while (list)
8070     {
8071       column = list->data;
8072       if (column->visible == FALSE)
8073         goto loop_end;
8074
8075       gtk_tree_view_column_cell_set_cell_data (column,
8076                                                tree_view->priv->model,
8077                                                &iter,
8078                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
8079                                                cursor_node->children?TRUE:FALSE);
8080       if (_gtk_tree_view_column_cell_focus (column, count,
8081                                             list->prev?TRUE:FALSE,
8082                                             list->next?TRUE:FALSE))
8083         {
8084           tree_view->priv->focus_column = column;
8085           found_column = TRUE;
8086           break;
8087         }
8088     loop_end:
8089       if (count == 1)
8090         list = rtl ? list->prev : list->next;
8091       else
8092         list = rtl ? list->next : list->prev;
8093     }
8094
8095   if (found_column)
8096     {
8097       if (!gtk_tree_view_has_special_cell (tree_view))
8098         _gtk_tree_view_queue_draw_node (tree_view,
8099                                         cursor_tree,
8100                                         cursor_node,
8101                                         NULL);
8102       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
8103     }
8104   gtk_tree_view_clamp_column_visible (tree_view, tree_view->priv->focus_column);
8105 }
8106
8107 static void
8108 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
8109                                      gint         count)
8110 {
8111   GtkRBTree *cursor_tree;
8112   GtkRBNode *cursor_node;
8113   GtkTreePath *path;
8114
8115   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8116     return;
8117
8118   g_return_if_fail (tree_view->priv->tree != NULL);
8119
8120   if (count == -1)
8121     {
8122       cursor_tree = tree_view->priv->tree;
8123       cursor_node = cursor_tree->root;
8124       while (cursor_node && cursor_node->left != cursor_tree->nil)
8125         cursor_node = cursor_node->left;
8126     }
8127   else
8128     {
8129       cursor_tree = tree_view->priv->tree;
8130       cursor_node = cursor_tree->root;
8131       do
8132         {
8133           while (cursor_node && cursor_node->right != cursor_tree->nil)
8134             cursor_node = cursor_node->right;
8135           if (cursor_node->children == NULL)
8136             break;
8137
8138           cursor_tree = cursor_node->children;
8139           cursor_node = cursor_tree->root;
8140         }
8141       while (1);
8142     }
8143
8144   path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
8145   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
8146   gtk_tree_path_free (path);
8147 }
8148
8149 static gboolean
8150 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
8151 {
8152   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8153     return FALSE;
8154
8155   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
8156     return FALSE;
8157
8158   gtk_tree_selection_select_all (tree_view->priv->selection);
8159
8160   return TRUE;
8161 }
8162
8163 static gboolean
8164 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
8165 {
8166   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8167     return FALSE;
8168
8169   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
8170     return FALSE;
8171
8172   gtk_tree_selection_unselect_all (tree_view->priv->selection);
8173
8174   return TRUE;
8175 }
8176
8177 static gboolean
8178 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
8179                                       gboolean     start_editing)
8180 {
8181   GtkRBTree *cursor_tree = NULL;
8182   GtkRBNode *cursor_node = NULL;
8183   GtkTreePath *cursor_path = NULL;
8184   GtkTreeSelectMode mode = 0;
8185
8186   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8187     return FALSE;
8188
8189   if (tree_view->priv->cursor)
8190     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8191
8192   if (cursor_path == NULL)
8193     return FALSE;
8194
8195   _gtk_tree_view_find_node (tree_view, cursor_path,
8196                             &cursor_tree, &cursor_node);
8197
8198   if (cursor_tree == NULL)
8199     {
8200       gtk_tree_path_free (cursor_path);
8201       return FALSE;
8202     }
8203
8204   if (!tree_view->priv->shift_pressed && start_editing &&
8205       tree_view->priv->focus_column)
8206     {
8207       if (gtk_tree_view_start_editing (tree_view, cursor_path))
8208         {
8209           gtk_tree_path_free (cursor_path);
8210           return TRUE;
8211         }
8212     }
8213
8214   if (tree_view->priv->ctrl_pressed)
8215     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
8216   if (tree_view->priv->shift_pressed)
8217     mode |= GTK_TREE_SELECT_MODE_EXTEND;
8218
8219   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
8220                                             cursor_node,
8221                                             cursor_tree,
8222                                             cursor_path,
8223                                             mode,
8224                                             FALSE);
8225
8226   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
8227
8228   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8229   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
8230
8231   if (!tree_view->priv->shift_pressed)
8232     gtk_tree_view_row_activated (tree_view, cursor_path,
8233                                  tree_view->priv->focus_column);
8234
8235   gtk_tree_path_free (cursor_path);
8236
8237   return TRUE;
8238 }
8239
8240 static gboolean
8241 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
8242 {
8243   GtkRBTree *cursor_tree = NULL;
8244   GtkRBNode *cursor_node = NULL;
8245   GtkTreePath *cursor_path = NULL;
8246
8247   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8248     return FALSE;
8249
8250   cursor_path = NULL;
8251   if (tree_view->priv->cursor)
8252     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8253
8254   if (cursor_path == NULL)
8255     return FALSE;
8256
8257   _gtk_tree_view_find_node (tree_view, cursor_path,
8258                             &cursor_tree, &cursor_node);
8259   if (cursor_tree == NULL)
8260     {
8261       gtk_tree_path_free (cursor_path);
8262       return FALSE;
8263     }
8264
8265   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
8266                                             cursor_node,
8267                                             cursor_tree,
8268                                             cursor_path,
8269                                             GTK_TREE_SELECT_MODE_TOGGLE,
8270                                             FALSE);
8271
8272   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
8273
8274   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8275   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
8276   gtk_tree_path_free (cursor_path);
8277
8278   return TRUE;
8279 }
8280
8281 static gboolean
8282 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
8283                                                gboolean     logical,
8284                                                gboolean     expand,
8285                                                gboolean     open_all)
8286 {
8287   GtkTreePath *cursor_path = NULL;
8288   GtkRBTree *tree;
8289   GtkRBNode *node;
8290
8291   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8292     return FALSE;
8293
8294   cursor_path = NULL;
8295   if (tree_view->priv->cursor)
8296     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8297
8298   if (cursor_path == NULL)
8299     return FALSE;
8300
8301   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
8302     return FALSE;
8303
8304   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8305   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
8306
8307   if (!logical
8308       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
8309     expand = !expand;
8310
8311   if (expand)
8312     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
8313   else
8314     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
8315
8316   gtk_tree_path_free (cursor_path);
8317
8318   return TRUE;
8319 }
8320
8321 static gboolean
8322 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
8323 {
8324   GtkRBTree *cursor_tree = NULL;
8325   GtkRBNode *cursor_node = NULL;
8326   GtkTreePath *cursor_path = NULL;
8327
8328   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8329     return FALSE;
8330
8331   cursor_path = NULL;
8332   if (tree_view->priv->cursor)
8333     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8334
8335   if (cursor_path == NULL)
8336     return FALSE;
8337
8338   _gtk_tree_view_find_node (tree_view, cursor_path,
8339                             &cursor_tree, &cursor_node);
8340   if (cursor_tree == NULL)
8341     {
8342       gtk_tree_path_free (cursor_path);
8343       return FALSE;
8344     }
8345
8346   if (cursor_tree->parent_node)
8347     {
8348       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
8349       cursor_node = cursor_tree->parent_node;
8350       cursor_tree = cursor_tree->parent_tree;
8351
8352       gtk_tree_path_up (cursor_path);
8353       gtk_tree_row_reference_free (tree_view->priv->cursor);
8354       tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, cursor_path);
8355       _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
8356                                                 cursor_node,
8357                                                 cursor_tree,
8358                                                 cursor_path,
8359                                                 0,
8360                                                 FALSE);
8361     }
8362
8363   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
8364
8365   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8366   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
8367   gtk_tree_path_free (cursor_path);
8368
8369   return TRUE;
8370 }
8371
8372 /* Cut and paste from gtkwindow.c */
8373 static void
8374 send_focus_change (GtkWidget *widget,
8375                    gboolean   in)
8376 {
8377   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
8378
8379   g_object_ref (widget);
8380
8381  if (in)
8382     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
8383   else
8384     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
8385
8386   fevent->focus_change.type = GDK_FOCUS_CHANGE;
8387   fevent->focus_change.window = g_object_ref (widget->window);
8388   fevent->focus_change.in = in;
8389
8390   gtk_widget_event (widget, fevent);
8391
8392   g_object_notify (G_OBJECT (widget), "has_focus");
8393
8394   g_object_unref (widget);
8395   gdk_event_free (fevent);
8396 }
8397
8398 static gboolean
8399 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view)
8400 {
8401   GtkWidget *window;
8402   GtkWidget *entry;
8403   GtkWidget *search_dialog;
8404
8405   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
8406     return FALSE;
8407
8408   if (tree_view->priv->enable_search == FALSE ||
8409       tree_view->priv->search_column < 0)
8410     return FALSE;
8411
8412   search_dialog = g_object_get_data (G_OBJECT (tree_view),
8413                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
8414   if (search_dialog)
8415     return FALSE;
8416
8417   /* set up window */
8418   window = gtk_window_new (GTK_WINDOW_POPUP);
8419   gtk_window_set_title (GTK_WINDOW (window), "search dialog");
8420   gtk_container_set_border_width (GTK_CONTAINER (window), 3);
8421   gtk_window_set_modal (GTK_WINDOW (window), TRUE);
8422   g_signal_connect (window, "delete_event",
8423                     G_CALLBACK (gtk_tree_view_search_delete_event),
8424                     tree_view);
8425   g_signal_connect (window, "key_press_event",
8426                     G_CALLBACK (gtk_tree_view_search_key_press_event),
8427                     tree_view);
8428   g_signal_connect (window, "button_press_event",
8429                     G_CALLBACK (gtk_tree_view_search_button_press_event),
8430                     tree_view);
8431
8432   /* add entry */
8433   entry = gtk_entry_new ();
8434   gtk_widget_show (entry);
8435   g_signal_connect (entry, "changed",
8436                     G_CALLBACK (gtk_tree_view_search_init),
8437                     tree_view);
8438   g_signal_connect (entry, "populate_popup",
8439                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
8440                     tree_view);
8441   gtk_container_add (GTK_CONTAINER (window), entry);
8442
8443   /* done, show it */
8444   tree_view->priv->search_dialog_position_func (tree_view, window);
8445   gtk_widget_show_all (window);
8446   gtk_widget_grab_focus (entry);
8447
8448   /* send focus-in event */
8449   send_focus_change (entry, TRUE);
8450
8451   /* position window */
8452
8453   /* yes, we point to the entry's private text thing here, a bit evil */
8454   g_object_set_data (G_OBJECT (window), "gtk-tree-view-text",
8455                      (gchar *) gtk_entry_get_text (GTK_ENTRY (entry)));
8456   g_object_set_data (G_OBJECT (tree_view),
8457                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY, window);
8458
8459   /* search first matching iter */
8460   gtk_tree_view_search_init (entry, tree_view);
8461
8462   return TRUE;
8463 }
8464
8465 /* this function returns the new width of the column being resized given
8466  * the column and x position of the cursor; the x cursor position is passed
8467  * in as a pointer and automagicly corrected if it's beyond min/max limits
8468  */
8469 static gint
8470 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
8471                                 gint       i,
8472                                 gint      *x)
8473 {
8474   GtkTreeViewColumn *column;
8475   gint width;
8476   gboolean rtl;
8477
8478   /* first translate the x position from widget->window
8479    * to clist->clist_window
8480    */
8481   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8482   column = g_list_nth (tree_view->priv->columns, i)->data;
8483   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
8484
8485   /* Clamp down the value */
8486   if (column->min_width == -1)
8487     width = MAX (column->button->requisition.width,
8488                  width);
8489   else
8490     width = MAX (column->min_width,
8491                  width);
8492   if (column->max_width != -1)
8493     width = MIN (width, column->max_width != -1);
8494
8495   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
8496
8497   return width;
8498 }
8499
8500
8501 /* Callbacks */
8502 static void
8503 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
8504                                   GtkTreeView   *tree_view)
8505 {
8506   if (GTK_WIDGET_REALIZED (tree_view))
8507     {
8508       gint dy;
8509
8510       gdk_window_move (tree_view->priv->bin_window,
8511                        - tree_view->priv->hadjustment->value,
8512                        TREE_VIEW_HEADER_HEIGHT (tree_view));
8513       gdk_window_move (tree_view->priv->header_window,
8514                        - tree_view->priv->hadjustment->value,
8515                        0);
8516       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
8517       if (dy && tree_view->priv->edited_column)
8518         {
8519           if (GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
8520             GTK_WIDGET (tree_view->priv->edited_column->editable_widget)->allocation.y += dy;
8521         }
8522       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
8523
8524       /* update our dy and top_row */
8525       tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
8526       gtk_tree_view_dy_to_top_row (tree_view);
8527     }
8528 }
8529
8530 \f
8531
8532 /* Public methods
8533  */
8534
8535 /**
8536  * gtk_tree_view_new:
8537  *
8538  * Creates a new #GtkTreeView widget.
8539  *
8540  * Return value: A newly created #GtkTreeView widget.
8541  **/
8542 GtkWidget *
8543 gtk_tree_view_new (void)
8544 {
8545   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
8546 }
8547
8548 /**
8549  * gtk_tree_view_new_with_model:
8550  * @model: the model.
8551  *
8552  * Creates a new #GtkTreeView widget with the model initialized to @model.
8553  *
8554  * Return value: A newly created #GtkTreeView widget.
8555  **/
8556 GtkWidget *
8557 gtk_tree_view_new_with_model (GtkTreeModel *model)
8558 {
8559   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
8560 }
8561
8562 /* Public Accessors
8563  */
8564
8565 /**
8566  * gtk_tree_view_get_model:
8567  * @tree_view: a #GtkTreeView
8568  *
8569  * Returns the model the the #GtkTreeView is based on.  Returns %NULL if the
8570  * model is unset.
8571  *
8572  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
8573  **/
8574 GtkTreeModel *
8575 gtk_tree_view_get_model (GtkTreeView *tree_view)
8576 {
8577   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8578
8579   return tree_view->priv->model;
8580 }
8581
8582 /**
8583  * gtk_tree_view_set_model:
8584  * @tree_view: A #GtkTreeNode.
8585  * @model: The model.
8586  *
8587  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
8588  * set, it will remove it before setting the new model.  If @model is %NULL, then
8589  * it will unset the old model.
8590  **/
8591 void
8592 gtk_tree_view_set_model (GtkTreeView  *tree_view,
8593                          GtkTreeModel *model)
8594 {
8595   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8596
8597   if (model == tree_view->priv->model)
8598     return;
8599
8600   if (tree_view->priv->model)
8601     {
8602       GList *tmplist = tree_view->priv->columns;
8603
8604       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
8605
8606       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8607                                             gtk_tree_view_row_changed,
8608                                             tree_view);
8609       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8610                                             gtk_tree_view_row_inserted,
8611                                             tree_view);
8612       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8613                                             gtk_tree_view_row_has_child_toggled,
8614                                             tree_view);
8615       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8616                                             gtk_tree_view_row_deleted,
8617                                             tree_view);
8618       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
8619                                             gtk_tree_view_rows_reordered,
8620                                             tree_view);
8621
8622       for (; tmplist; tmplist = tmplist->next)
8623         _gtk_tree_view_column_unset_model (tmplist->data,
8624                                            tree_view->priv->model);
8625
8626       if (tree_view->priv->tree)
8627         {
8628           _gtk_rbtree_free (tree_view->priv->tree);
8629           tree_view->priv->tree = NULL;
8630         }
8631
8632       tree_view->priv->prelight_node = NULL;
8633       tree_view->priv->prelight_tree = NULL;
8634       tree_view->priv->button_pressed_node = NULL;
8635       tree_view->priv->button_pressed_tree = NULL;
8636
8637       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
8638       tree_view->priv->drag_dest_row = NULL;
8639       gtk_tree_row_reference_free (tree_view->priv->cursor);
8640       tree_view->priv->cursor = NULL;
8641       gtk_tree_row_reference_free (tree_view->priv->anchor);
8642       tree_view->priv->anchor = NULL;
8643       gtk_tree_row_reference_free (tree_view->priv->top_row);
8644       tree_view->priv->top_row = NULL;
8645       gtk_tree_row_reference_free (tree_view->priv->last_button_press);
8646       tree_view->priv->last_button_press = NULL;
8647       gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
8648       tree_view->priv->last_button_press_2 = NULL;
8649       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
8650       tree_view->priv->scroll_to_path = NULL;
8651
8652       tree_view->priv->scroll_to_column = NULL;
8653
8654       g_object_unref (tree_view->priv->model);
8655
8656       tree_view->priv->search_column = -1;
8657       tree_view->priv->fixed_height_check = 0;
8658       tree_view->priv->fixed_height = -1;
8659       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
8660     }
8661
8662   tree_view->priv->model = model;
8663
8664
8665   if (tree_view->priv->model)
8666     {
8667       gint i;
8668       GtkTreePath *path;
8669       GtkTreeIter iter;
8670       GtkTreeModelFlags flags;
8671
8672       if (tree_view->priv->search_column == -1)
8673         {
8674           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
8675             {
8676               GType type = gtk_tree_model_get_column_type (model, i);
8677
8678               if (g_value_type_transformable (type, G_TYPE_STRING))
8679                 {
8680                   tree_view->priv->search_column = i;
8681                   break;
8682                 }
8683             }
8684         }
8685
8686       g_object_ref (tree_view->priv->model);
8687       g_signal_connect (tree_view->priv->model,
8688                         "row_changed",
8689                         G_CALLBACK (gtk_tree_view_row_changed),
8690                         tree_view);
8691       g_signal_connect (tree_view->priv->model,
8692                         "row_inserted",
8693                         G_CALLBACK (gtk_tree_view_row_inserted),
8694                         tree_view);
8695       g_signal_connect (tree_view->priv->model,
8696                         "row_has_child_toggled",
8697                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
8698                         tree_view);
8699       g_signal_connect (tree_view->priv->model,
8700                         "row_deleted",
8701                         G_CALLBACK (gtk_tree_view_row_deleted),
8702                         tree_view);
8703       g_signal_connect (tree_view->priv->model,
8704                         "rows_reordered",
8705                         G_CALLBACK (gtk_tree_view_rows_reordered),
8706                         tree_view);
8707
8708       flags = gtk_tree_model_get_flags (tree_view->priv->model);
8709       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
8710         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8711       else
8712         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8713
8714       path = gtk_tree_path_new_first ();
8715       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
8716         {
8717           tree_view->priv->tree = _gtk_rbtree_new ();
8718           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
8719         }
8720       gtk_tree_path_free (path);
8721
8722       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
8723       install_presize_handler (tree_view);
8724     }
8725
8726   g_object_notify (G_OBJECT (tree_view), "model");
8727
8728   if (GTK_WIDGET_REALIZED (tree_view))
8729     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8730 }
8731
8732 /**
8733  * gtk_tree_view_get_selection:
8734  * @tree_view: A #GtkTreeView.
8735  *
8736  * Gets the #GtkTreeSelection associated with @tree_view.
8737  *
8738  * Return value: A #GtkTreeSelection object.
8739  **/
8740 GtkTreeSelection *
8741 gtk_tree_view_get_selection (GtkTreeView *tree_view)
8742 {
8743   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8744
8745   return tree_view->priv->selection;
8746 }
8747
8748 /**
8749  * gtk_tree_view_get_hadjustment:
8750  * @tree_view: A #GtkTreeView
8751  *
8752  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
8753  *
8754  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
8755  * used.
8756  **/
8757 GtkAdjustment *
8758 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
8759 {
8760   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8761
8762   if (tree_view->priv->hadjustment == NULL)
8763     gtk_tree_view_set_hadjustment (tree_view, NULL);
8764
8765   return tree_view->priv->hadjustment;
8766 }
8767
8768 /**
8769  * gtk_tree_view_set_hadjustment:
8770  * @tree_view: A #GtkTreeView
8771  * @adjustment: The #GtkAdjustment to set, or %NULL
8772  *
8773  * Sets the #GtkAdjustment for the current horizontal aspect.
8774  **/
8775 void
8776 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
8777                                GtkAdjustment *adjustment)
8778 {
8779   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8780
8781   gtk_tree_view_set_adjustments (tree_view,
8782                                  adjustment,
8783                                  tree_view->priv->vadjustment);
8784
8785   g_object_notify (G_OBJECT (tree_view), "hadjustment");
8786 }
8787
8788 /**
8789  * gtk_tree_view_get_vadjustment:
8790  * @tree_view: A #GtkTreeView
8791  *
8792  * Gets the #GtkAdjustment currently being used for the vertical aspect.
8793  *
8794  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
8795  * used.
8796  **/
8797 GtkAdjustment *
8798 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
8799 {
8800   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8801
8802   if (tree_view->priv->vadjustment == NULL)
8803     gtk_tree_view_set_vadjustment (tree_view, NULL);
8804
8805   return tree_view->priv->vadjustment;
8806 }
8807
8808 /**
8809  * gtk_tree_view_set_vadjustment:
8810  * @tree_view: A #GtkTreeView
8811  * @adjustment: The #GtkAdjustment to set, or %NULL
8812  *
8813  * Sets the #GtkAdjustment for the current vertical aspect.
8814  **/
8815 void
8816 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
8817                                GtkAdjustment *adjustment)
8818 {
8819   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8820
8821   gtk_tree_view_set_adjustments (tree_view,
8822                                  tree_view->priv->hadjustment,
8823                                  adjustment);
8824
8825   g_object_notify (G_OBJECT (tree_view), "vadjustment");
8826 }
8827
8828 /* Column and header operations */
8829
8830 /**
8831  * gtk_tree_view_get_headers_visible:
8832  * @tree_view: A #GtkTreeView.
8833  *
8834  * Returns %TRUE if the headers on the @tree_view are visible.
8835  *
8836  * Return value: Whether the headers are visible or not.
8837  **/
8838 gboolean
8839 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
8840 {
8841   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8842
8843   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
8844 }
8845
8846 /**
8847  * gtk_tree_view_set_headers_visible:
8848  * @tree_view: A #GtkTreeView.
8849  * @headers_visible: %TRUE if the headers are visible
8850  *
8851  * Sets the the visibility state of the headers.
8852  **/
8853 void
8854 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
8855                                    gboolean     headers_visible)
8856 {
8857   gint x, y;
8858   GList *list;
8859   GtkTreeViewColumn *column;
8860
8861   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8862
8863   headers_visible = !! headers_visible;
8864
8865   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
8866     return;
8867
8868   if (headers_visible)
8869     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
8870   else
8871     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
8872
8873   if (GTK_WIDGET_REALIZED (tree_view))
8874     {
8875       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
8876       if (headers_visible)
8877         {
8878           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));
8879
8880           if (GTK_WIDGET_MAPPED (tree_view))
8881             gtk_tree_view_map_buttons (tree_view);
8882         }
8883       else
8884         {
8885           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
8886
8887           for (list = tree_view->priv->columns; list; list = list->next)
8888             {
8889               column = list->data;
8890               gtk_widget_unmap (column->button);
8891             }
8892           gdk_window_hide (tree_view->priv->header_window);
8893         }
8894     }
8895
8896   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
8897   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
8898   tree_view->priv->vadjustment->lower = 0;
8899   tree_view->priv->vadjustment->upper = tree_view->priv->height;
8900   gtk_adjustment_changed (tree_view->priv->vadjustment);
8901
8902   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8903
8904   g_object_notify (G_OBJECT (tree_view), "headers_visible");
8905 }
8906
8907 /**
8908  * gtk_tree_view_columns_autosize:
8909  * @tree_view: A #GtkTreeView.
8910  *
8911  * Resizes all columns to their optimal width. Only works after the
8912  * treeview has been realized.
8913  **/
8914 void
8915 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
8916 {
8917   gboolean dirty = FALSE;
8918   GList *list;
8919   GtkTreeViewColumn *column;
8920
8921   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8922
8923   for (list = tree_view->priv->columns; list; list = list->next)
8924     {
8925       column = list->data;
8926       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8927         continue;
8928       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8929       dirty = TRUE;
8930     }
8931
8932   if (dirty)
8933     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8934 }
8935
8936 /**
8937  * gtk_tree_view_set_headers_clickable:
8938  * @tree_view: A #GtkTreeView.
8939  * @setting: %TRUE if the columns are clickable.
8940  *
8941  * Allow the column title buttons to be clicked.
8942  **/
8943 void
8944 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
8945                                      gboolean   setting)
8946 {
8947   GList *list;
8948
8949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8950   g_return_if_fail (tree_view->priv->model != NULL);
8951
8952   for (list = tree_view->priv->columns; list; list = list->next)
8953     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
8954
8955   g_object_notify (G_OBJECT (tree_view), "headers_clickable");
8956 }
8957
8958
8959 /**
8960  * gtk_tree_view_set_rules_hint
8961  * @tree_view: a #GtkTreeView
8962  * @setting: %TRUE if the tree requires reading across rows
8963  *
8964  * This function tells GTK+ that the user interface for your
8965  * application requires users to read across tree rows and associate
8966  * cells with one another. By default, GTK+ will then render the tree
8967  * with alternating row colors. Do <emphasis>not</emphasis> use it
8968  * just because you prefer the appearance of the ruled tree; that's a
8969  * question for the theme. Some themes will draw tree rows in
8970  * alternating colors even when rules are turned off, and users who
8971  * prefer that appearance all the time can choose those themes. You
8972  * should call this function only as a <emphasis>semantic</emphasis>
8973  * hint to the theme engine that your tree makes alternating colors
8974  * useful from a functional standpoint (since it has lots of columns,
8975  * generally).
8976  *
8977  **/
8978 void
8979 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
8980                               gboolean      setting)
8981 {
8982   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8983
8984   setting = setting != FALSE;
8985
8986   if (tree_view->priv->has_rules != setting)
8987     {
8988       tree_view->priv->has_rules = setting;
8989       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8990     }
8991
8992   g_object_notify (G_OBJECT (tree_view), "rules_hint");
8993 }
8994
8995 /**
8996  * gtk_tree_view_get_rules_hint
8997  * @tree_view: a #GtkTreeView
8998  *
8999  * Gets the setting set by gtk_tree_view_set_rules_hint().
9000  *
9001  * Return value: %TRUE if rules are useful for the user of this tree
9002  **/
9003 gboolean
9004 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
9005 {
9006   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9007
9008   return tree_view->priv->has_rules;
9009 }
9010
9011 /* Public Column functions
9012  */
9013
9014 /**
9015  * gtk_tree_view_append_column:
9016  * @tree_view: A #GtkTreeView.
9017  * @column: The #GtkTreeViewColumn to add.
9018  *
9019  * Appends @column to the list of columns. If @tree_view has "fixed_height"
9020  * mode enbabled, then @column must have its "sizing" property set to be
9021  * GTK_TREE_VIEW_COLUMN_FIXED.
9022  *
9023  * Return value: The number of columns in @tree_view after appending.
9024  **/
9025 gint
9026 gtk_tree_view_append_column (GtkTreeView       *tree_view,
9027                              GtkTreeViewColumn *column)
9028 {
9029   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
9030   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
9031   g_return_val_if_fail (column->tree_view == NULL, -1);
9032
9033   return gtk_tree_view_insert_column (tree_view, column, -1);
9034 }
9035
9036
9037 /**
9038  * gtk_tree_view_remove_column:
9039  * @tree_view: A #GtkTreeView.
9040  * @column: The #GtkTreeViewColumn to remove.
9041  *
9042  * Removes @column from @tree_view.
9043  *
9044  * Return value: The number of columns in @tree_view after removing.
9045  **/
9046 gint
9047 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
9048                              GtkTreeViewColumn *column)
9049 {
9050   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
9051   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
9052   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
9053
9054   if (tree_view->priv->focus_column == column)
9055     tree_view->priv->focus_column = NULL;
9056
9057   if (tree_view->priv->edited_column == column)
9058     {
9059       gtk_tree_view_stop_editing (tree_view, TRUE);
9060
9061       /* no need to, but just to be sure ... */
9062       tree_view->priv->edited_column = NULL;
9063     }
9064
9065   g_signal_handlers_disconnect_by_func (column,
9066                                         G_CALLBACK (column_sizing_notify),
9067                                         tree_view);
9068
9069   _gtk_tree_view_column_unset_tree_view (column);
9070
9071   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
9072   tree_view->priv->n_columns--;
9073
9074   if (GTK_WIDGET_REALIZED (tree_view))
9075     {
9076       GList *list;
9077
9078       _gtk_tree_view_column_unrealize_button (column);
9079       for (list = tree_view->priv->columns; list; list = list->next)
9080         {
9081           GtkTreeViewColumn *tmp_column;
9082
9083           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
9084           if (tmp_column->visible)
9085             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
9086         }
9087
9088       if (tree_view->priv->n_columns == 0 &&
9089           gtk_tree_view_get_headers_visible (tree_view))
9090         gdk_window_hide (tree_view->priv->header_window);
9091
9092       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9093     }
9094
9095   g_object_unref (column);
9096   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
9097
9098   return tree_view->priv->n_columns;
9099 }
9100
9101 /**
9102  * gtk_tree_view_insert_column:
9103  * @tree_view: A #GtkTreeView.
9104  * @column: The #GtkTreeViewColumn to be inserted.
9105  * @position: The position to insert @column in.
9106  *
9107  * This inserts the @column into the @tree_view at @position.  If @position is
9108  * -1, then the column is inserted at the end. If @tree_view has
9109  * "fixed_height" mode enabled, then @column must have its "sizing" property
9110  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
9111  *
9112  * Return value: The number of columns in @tree_view after insertion.
9113  **/
9114 gint
9115 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
9116                              GtkTreeViewColumn *column,
9117                              gint               position)
9118 {
9119   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
9120   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
9121   g_return_val_if_fail (column->tree_view == NULL, -1);
9122
9123   if (tree_view->priv->fixed_height_mode)
9124     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
9125                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
9126
9127   g_object_ref (column);
9128   gtk_object_sink (GTK_OBJECT (column));
9129
9130   if (tree_view->priv->n_columns == 0 &&
9131       GTK_WIDGET_REALIZED (tree_view) &&
9132       gtk_tree_view_get_headers_visible (tree_view))
9133     {
9134       gdk_window_show (tree_view->priv->header_window);
9135     }
9136
9137   g_signal_connect (column, "notify::sizing",
9138                     G_CALLBACK (column_sizing_notify), tree_view);
9139
9140   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
9141                                             column, position);
9142   tree_view->priv->n_columns++;
9143
9144   _gtk_tree_view_column_set_tree_view (column, tree_view);
9145
9146   if (GTK_WIDGET_REALIZED (tree_view))
9147     {
9148       GList *list;
9149
9150       _gtk_tree_view_column_realize_button (column);
9151
9152       for (list = tree_view->priv->columns; list; list = list->next)
9153         {
9154           column = GTK_TREE_VIEW_COLUMN (list->data);
9155           if (column->visible)
9156             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
9157         }
9158       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9159     }
9160
9161   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
9162
9163   return tree_view->priv->n_columns;
9164 }
9165
9166 /**
9167  * gtk_tree_view_insert_column_with_attributes:
9168  * @tree_view: A #GtkTreeView
9169  * @position: The position to insert the new column in.
9170  * @title: The title to set the header to.
9171  * @cell: The #GtkCellRenderer.
9172  * @Varargs: A %NULL-terminated list of attributes.
9173  *
9174  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
9175  * @position.  If @position is -1, then the newly created column is inserted at
9176  * the end.  The column is initialized with the attributes given. If @tree_view
9177  * has "fixed_height" mode enabled, then @column must have its sizing
9178  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
9179  *
9180  * Return value: The number of columns in @tree_view after insertion.
9181  **/
9182 gint
9183 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
9184                                              gint             position,
9185                                              const gchar     *title,
9186                                              GtkCellRenderer *cell,
9187                                              ...)
9188 {
9189   GtkTreeViewColumn *column;
9190   gchar *attribute;
9191   va_list args;
9192   gint column_id;
9193
9194   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
9195
9196   column = gtk_tree_view_column_new ();
9197
9198   gtk_tree_view_column_set_title (column, title);
9199   gtk_tree_view_column_pack_start (column, cell, TRUE);
9200
9201   va_start (args, cell);
9202
9203   attribute = va_arg (args, gchar *);
9204
9205   while (attribute != NULL)
9206     {
9207       column_id = va_arg (args, gint);
9208       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
9209       attribute = va_arg (args, gchar *);
9210     }
9211
9212   va_end (args);
9213
9214   gtk_tree_view_insert_column (tree_view, column, position);
9215
9216   return tree_view->priv->n_columns;
9217 }
9218
9219 /**
9220  * gtk_tree_view_insert_column_with_data_func:
9221  * @tree_view: a #GtkTreeView
9222  * @position: Position to insert, -1 for append
9223  * @title: column title
9224  * @cell: cell renderer for column
9225  * @func: function to set attributes of cell renderer
9226  * @data: data for @func
9227  * @dnotify: destroy notifier for @data
9228  *
9229  * Convenience function that inserts a new column into the #GtkTreeView
9230  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
9231  * attributes (normally using data from the model). See also
9232  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
9233  * If @tree_view has "fixed_height" mode enabled, then @column must have its
9234  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
9235  *
9236  * Return value: number of columns in the tree view post-insert
9237  **/
9238 gint
9239 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
9240                                              gint                       position,
9241                                              const gchar               *title,
9242                                              GtkCellRenderer           *cell,
9243                                              GtkTreeCellDataFunc        func,
9244                                              gpointer                   data,
9245                                              GDestroyNotify             dnotify)
9246 {
9247   GtkTreeViewColumn *column;
9248
9249   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
9250
9251   column = gtk_tree_view_column_new ();
9252
9253   gtk_tree_view_column_set_title (column, title);
9254   gtk_tree_view_column_pack_start (column, cell, TRUE);
9255   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
9256
9257   gtk_tree_view_insert_column (tree_view, column, position);
9258
9259   return tree_view->priv->n_columns;
9260 }
9261
9262 /**
9263  * gtk_tree_view_get_column:
9264  * @tree_view: A #GtkTreeView.
9265  * @n: The position of the column, counting from 0.
9266  *
9267  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
9268  *
9269  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
9270  * range of columns.
9271  **/
9272 GtkTreeViewColumn *
9273 gtk_tree_view_get_column (GtkTreeView *tree_view,
9274                           gint         n)
9275 {
9276   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9277
9278   if (n < 0 || n >= tree_view->priv->n_columns)
9279     return NULL;
9280
9281   if (tree_view->priv->columns == NULL)
9282     return NULL;
9283
9284   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
9285 }
9286
9287 /**
9288  * gtk_tree_view_get_columns:
9289  * @tree_view: A #GtkTreeView
9290  *
9291  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
9292  * The returned list must be freed with g_list_free ().
9293  *
9294  * Return value: A list of #GtkTreeViewColumn s
9295  **/
9296 GList *
9297 gtk_tree_view_get_columns (GtkTreeView *tree_view)
9298 {
9299   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9300
9301   return g_list_copy (tree_view->priv->columns);
9302 }
9303
9304 /**
9305  * gtk_tree_view_move_column_after:
9306  * @tree_view: A #GtkTreeView
9307  * @column: The #GtkTreeViewColumn to be moved.
9308  * @base_column: The #GtkTreeViewColumn to be moved relative to, or %NULL.
9309  *
9310  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
9311  * @column is placed in the first position.
9312  **/
9313 void
9314 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
9315                                  GtkTreeViewColumn *column,
9316                                  GtkTreeViewColumn *base_column)
9317 {
9318   GList *column_list_el, *base_el = NULL;
9319
9320   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9321
9322   column_list_el = g_list_find (tree_view->priv->columns, column);
9323   g_return_if_fail (column_list_el != NULL);
9324
9325   if (base_column)
9326     {
9327       base_el = g_list_find (tree_view->priv->columns, base_column);
9328       g_return_if_fail (base_el != NULL);
9329     }
9330
9331   if (column_list_el->prev == base_el)
9332     return;
9333
9334   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
9335   if (base_el == NULL)
9336     {
9337       column_list_el->prev = NULL;
9338       column_list_el->next = tree_view->priv->columns;
9339       if (column_list_el->next)
9340         column_list_el->next->prev = column_list_el;
9341       tree_view->priv->columns = column_list_el;
9342     }
9343   else
9344     {
9345       column_list_el->prev = base_el;
9346       column_list_el->next = base_el->next;
9347       if (column_list_el->next)
9348         column_list_el->next->prev = column_list_el;
9349       base_el->next = column_list_el;
9350     }
9351
9352   if (GTK_WIDGET_REALIZED (tree_view))
9353     {
9354       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9355       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view));
9356     }
9357
9358   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
9359 }
9360
9361 /**
9362  * gtk_tree_view_set_expander_column:
9363  * @tree_view: A #GtkTreeView
9364  * @column: %NULL, or the column to draw the expander arrow at.
9365  *
9366  * Sets the column to draw the expander arrow at. It must be in @tree_view.  If
9367  * @column is %NULL, then the expander arrow is always at the first visible
9368  * column.
9369  **/
9370 void
9371 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
9372                                    GtkTreeViewColumn *column)
9373 {
9374   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9375   if (column != NULL)
9376     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
9377
9378   if (tree_view->priv->expander_column != column)
9379     {
9380       GList *list;
9381
9382       if (column)
9383         {
9384           /* Confirm that column is in tree_view */
9385           for (list = tree_view->priv->columns; list; list = list->next)
9386             if (list->data == column)
9387               break;
9388           g_return_if_fail (list != NULL);
9389         }
9390
9391       tree_view->priv->expander_column = column;
9392       g_object_notify (G_OBJECT (tree_view), "expander_column");
9393     }
9394 }
9395
9396 /**
9397  * gtk_tree_view_get_expander_column:
9398  * @tree_view: A #GtkTreeView
9399  *
9400  * Returns the column that is the current expander column.  This
9401  * column has the expander arrow drawn next to it.
9402  *
9403  * Return value: The expander column.
9404  **/
9405 GtkTreeViewColumn *
9406 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
9407 {
9408   GList *list;
9409
9410   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9411
9412   for (list = tree_view->priv->columns; list; list = list->next)
9413     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
9414       return (GtkTreeViewColumn *) list->data;
9415   return NULL;
9416 }
9417
9418
9419 /**
9420  * gtk_tree_view_set_column_drag_function:
9421  * @tree_view: A #GtkTreeView.
9422  * @func: A function to determine which columns are reorderable, or %NULL.
9423  * @user_data: User data to be passed to @func, or %NULL
9424  * @destroy: Destroy notifier for @user_data, or %NULL
9425  *
9426  * Sets a user function for determining where a column may be dropped when
9427  * dragged.  This function is called on every column pair in turn at the
9428  * beginning of a column drag to determine where a drop can take place.  The
9429  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
9430  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
9431  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
9432  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
9433  * @tree_view reverts to the default behavior of allowing all columns to be
9434  * dropped everywhere.
9435  **/
9436 void
9437 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
9438                                         GtkTreeViewColumnDropFunc  func,
9439                                         gpointer                   user_data,
9440                                         GtkDestroyNotify           destroy)
9441 {
9442   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9443
9444   if (tree_view->priv->column_drop_func_data_destroy)
9445     (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
9446
9447   tree_view->priv->column_drop_func = func;
9448   tree_view->priv->column_drop_func_data = user_data;
9449   tree_view->priv->column_drop_func_data_destroy = destroy;
9450 }
9451
9452 /**
9453  * gtk_tree_view_scroll_to_point:
9454  * @tree_view: a #GtkTreeView
9455  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
9456  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
9457  *
9458  * Scrolls the tree view such that the top-left corner of the visible
9459  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
9460  * in tree window coordinates.  The @tree_view must be realized before
9461  * this function is called.  If it isn't, you probably want to be
9462  * using gtk_tree_view_scroll_to_cell().
9463  *
9464  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
9465  **/
9466 void
9467 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
9468                                gint         tree_x,
9469                                gint         tree_y)
9470 {
9471   GtkAdjustment *hadj;
9472   GtkAdjustment *vadj;
9473
9474   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9475   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
9476
9477   hadj = tree_view->priv->hadjustment;
9478   vadj = tree_view->priv->vadjustment;
9479
9480   if (tree_x != -1)
9481     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
9482   if (tree_y != -1)
9483     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
9484 }
9485
9486 /**
9487  * gtk_tree_view_scroll_to_cell
9488  * @tree_view: A #GtkTreeView.
9489  * @path: The path of the row to move to, or %NULL.
9490  * @column: The #GtkTreeViewColumn to move horizontally to, or %NULL.
9491  * @use_align: whether to use alignment arguments, or %FALSE.
9492  * @row_align: The vertical alignment of the row specified by @path.
9493  * @col_align: The horizontal alignment of the column specified by @column.
9494  *
9495  * Moves the alignments of @tree_view to the position specified by @column and
9496  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
9497  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
9498  * or @path need to be non-%NULL.  @row_align determines where the row is
9499  * placed, and @col_align determines where @column is placed.  Both are expected
9500  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
9501  * right/bottom alignment, 0.5 means center.
9502  *
9503  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
9504  * tree does the minimum amount of work to scroll the cell onto the screen.
9505  * This means that the cell will be scrolled to the edge closest to its current
9506  * position.  If the cell is currently visible on the screen, nothing is done.
9507  *
9508  * This function only works if the model is set, and @path is a valid row on the
9509  * model.  If the model changes before the @tree_view is realized, the centered
9510  * path will be modified to reflect this change.
9511  **/
9512 void
9513 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
9514                               GtkTreePath       *path,
9515                               GtkTreeViewColumn *column,
9516                               gboolean           use_align,
9517                               gfloat             row_align,
9518                               gfloat             col_align)
9519 {
9520   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9521   g_return_if_fail (tree_view->priv->model != NULL);
9522   g_return_if_fail (tree_view->priv->tree != NULL);
9523   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
9524   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
9525   g_return_if_fail (path != NULL || column != NULL);
9526
9527 #if 0
9528   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
9529            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
9530 #endif
9531   row_align = CLAMP (row_align, 0.0, 1.0);
9532   col_align = CLAMP (col_align, 0.0, 1.0);
9533
9534
9535   /* Note: Despite the benefits that come from having one code path for the
9536    * scrolling code, we short-circuit validate_visible_area's immplementation as
9537    * it is much slower than just going to the point.
9538    */
9539   if (! GTK_WIDGET_REALIZED (tree_view) ||
9540       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
9541     {
9542       if (tree_view->priv->scroll_to_path)
9543         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
9544
9545       tree_view->priv->scroll_to_path = NULL;
9546       tree_view->priv->scroll_to_column = NULL;
9547
9548       if (path)
9549         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
9550       if (column)
9551         tree_view->priv->scroll_to_column = column;
9552       tree_view->priv->scroll_to_use_align = use_align;
9553       tree_view->priv->scroll_to_row_align = row_align;
9554       tree_view->priv->scroll_to_col_align = col_align;
9555
9556       install_presize_handler (tree_view);
9557     }
9558   else
9559     {
9560       GdkRectangle cell_rect;
9561       GdkRectangle vis_rect;
9562       gint dest_x, dest_y;
9563
9564       gtk_tree_view_get_cell_area (tree_view, path, column, &cell_rect);
9565       gtk_tree_view_widget_to_tree_coords (tree_view, cell_rect.x, cell_rect.y, &(cell_rect.x), &(cell_rect.y));
9566       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
9567
9568       dest_x = vis_rect.x;
9569       dest_y = vis_rect.y;
9570
9571       if (column)
9572         {
9573           if (use_align)
9574             {
9575               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
9576             }
9577           else
9578             {
9579               if (cell_rect.x < vis_rect.x)
9580                 dest_x = cell_rect.x;
9581               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
9582                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
9583             }
9584         }
9585
9586       if (path)
9587         {
9588           if (use_align)
9589             {
9590               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
9591               dest_y = MAX (dest_y, 0);
9592             }
9593           else
9594             {
9595               if (cell_rect.y < vis_rect.y)
9596                 dest_y = cell_rect.y;
9597               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
9598                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
9599             }
9600         }
9601
9602       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
9603     }
9604 }
9605
9606 /**
9607  * gtk_tree_view_row_activated:
9608  * @tree_view: A #GtkTreeView
9609  * @path: The #GtkTreePath to be activated.
9610  * @column: The #GtkTreeViewColumn to be activated.
9611  *
9612  * Activates the cell determined by @path and @column.
9613  **/
9614 void
9615 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
9616                              GtkTreePath       *path,
9617                              GtkTreeViewColumn *column)
9618 {
9619   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9620
9621   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
9622 }
9623
9624
9625 static void
9626 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
9627                                           GtkRBNode *node,
9628                                           gpointer   data)
9629 {
9630   GtkTreeView *tree_view = data;
9631
9632   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
9633       node->children)
9634     {
9635       GtkTreePath *path;
9636       GtkTreeIter iter;
9637
9638       path = _gtk_tree_view_find_path (tree_view, tree, node);
9639       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
9640
9641       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
9642
9643       gtk_tree_path_free (path);
9644     }
9645
9646   if (node->children)
9647     _gtk_rbtree_traverse (node->children,
9648                           node->children->root,
9649                           G_PRE_ORDER,
9650                           gtk_tree_view_expand_all_emission_helper,
9651                           tree_view);
9652 }
9653
9654 static void
9655 gtk_tree_view_expand_all_helper (GtkRBTree  *tree,
9656                                  GtkRBNode  *node,
9657                                  gpointer  data)
9658 {
9659   GtkTreeView *tree_view = data;
9660
9661   if (node->children)
9662     _gtk_rbtree_traverse (node->children,
9663                           node->children->root,
9664                           G_PRE_ORDER,
9665                           gtk_tree_view_expand_all_helper,
9666                           data);
9667   else if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT && node->children == NULL)
9668     {
9669       GtkTreePath *path;
9670       GtkTreeIter iter;
9671       GtkTreeIter child;
9672
9673       node->children = _gtk_rbtree_new ();
9674       node->children->parent_tree = tree;
9675       node->children->parent_node = node;
9676       path = _gtk_tree_view_find_path (tree_view, tree, node);
9677       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
9678       gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
9679       gtk_tree_view_build_tree (tree_view,
9680                                 node->children,
9681                                 &child,
9682                                 gtk_tree_path_get_depth (path) + 1,
9683                                 TRUE);
9684
9685       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
9686       _gtk_rbtree_traverse (node->children,
9687                             node->children->root,
9688                             G_PRE_ORDER,
9689                             gtk_tree_view_expand_all_emission_helper,
9690                             tree_view);
9691       gtk_tree_path_free (path);
9692     }
9693 }
9694
9695 /**
9696  * gtk_tree_view_expand_all:
9697  * @tree_view: A #GtkTreeView.
9698  *
9699  * Recursively expands all nodes in the @tree_view.
9700  **/
9701 void
9702 gtk_tree_view_expand_all (GtkTreeView *tree_view)
9703 {
9704   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9705
9706   if (tree_view->priv->tree == NULL)
9707     return;
9708
9709   _gtk_rbtree_traverse (tree_view->priv->tree,
9710                         tree_view->priv->tree->root,
9711                         G_PRE_ORDER,
9712                         gtk_tree_view_expand_all_helper,
9713                         tree_view);
9714 }
9715
9716 /* Timeout to animate the expander during expands and collapses */
9717 static gboolean
9718 expand_collapse_timeout (gpointer data)
9719 {
9720   gboolean retval;
9721
9722   GDK_THREADS_ENTER ();
9723
9724   retval = do_expand_collapse (data);
9725
9726   GDK_THREADS_LEAVE ();
9727
9728   return retval;
9729 }
9730
9731 static gboolean
9732 do_expand_collapse (GtkTreeView *tree_view)
9733 {
9734   GtkRBNode *node;
9735   GtkRBTree *tree;
9736   gboolean expanding;
9737   gboolean redraw;
9738
9739   redraw = FALSE;
9740   expanding = TRUE;
9741
9742   node = tree_view->priv->expanded_collapsed_node;
9743   tree = tree_view->priv->expanded_collapsed_tree;
9744
9745   if (node->children == NULL)
9746     expanding = FALSE;
9747
9748   if (expanding)
9749     {
9750       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9751         {
9752           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9753           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
9754
9755           redraw = TRUE;
9756
9757         }
9758       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9759         {
9760           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
9761
9762           redraw = TRUE;
9763         }
9764     }
9765   else
9766     {
9767       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9768         {
9769           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
9770           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9771
9772           redraw = TRUE;
9773         }
9774       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9775         {
9776           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9777
9778           redraw = TRUE;
9779
9780         }
9781     }
9782
9783   if (redraw)
9784     {
9785       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
9786
9787       return TRUE;
9788     }
9789
9790   return FALSE;
9791 }
9792
9793 /**
9794  * gtk_tree_view_collapse_all:
9795  * @tree_view: A #GtkTreeView.
9796  *
9797  * Recursively collapses all visible, expanded nodes in @tree_view.
9798  **/
9799 void
9800 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
9801 {
9802   GtkRBTree *tree;
9803   GtkRBNode *node;
9804   GtkTreePath *path;
9805   gint *indices;
9806
9807   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9808
9809   if (tree_view->priv->tree == NULL)
9810     return;
9811
9812   path = gtk_tree_path_new ();
9813   gtk_tree_path_down (path);
9814   indices = gtk_tree_path_get_indices (path);
9815
9816   tree = tree_view->priv->tree;
9817   node = tree->root;
9818   while (node && node->left != tree->nil)
9819     node = node->left;
9820
9821   while (node)
9822     {
9823       if (node->children)
9824         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
9825       indices[0]++;
9826       node = _gtk_rbtree_next (tree, node);
9827     }
9828
9829   gtk_tree_path_free (path);
9830 }
9831
9832 /**
9833  * gtk_tree_view_expand_to_path:
9834  * @tree_view: A #GtkTreeView.
9835  * @path: path to a row.
9836  *
9837  * Expands the row at @path. This will also expand all parent rows of
9838  * @path as necessary.
9839  *
9840  * Since: 2.2
9841  **/
9842 void
9843 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
9844                               GtkTreePath *path)
9845 {
9846   gint i, depth;
9847   gint *indices;
9848   GtkTreePath *tmp;
9849
9850   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9851   g_return_if_fail (path != NULL);
9852
9853   depth = gtk_tree_path_get_depth (path);
9854   indices = gtk_tree_path_get_indices (path);
9855
9856   tmp = gtk_tree_path_new ();
9857   g_return_if_fail (tmp != NULL);
9858
9859   for (i = 0; i < depth; i++)
9860     {
9861       gtk_tree_path_append_index (tmp, indices[i]);
9862       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
9863     }
9864
9865   gtk_tree_path_free (tmp);
9866 }
9867
9868 /* FIXME the bool return values for expand_row and collapse_row are
9869  * not analagous; they should be TRUE if the row had children and
9870  * was not already in the requested state.
9871  */
9872
9873
9874 static gboolean
9875 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
9876                                GtkTreePath *path,
9877                                GtkRBTree   *tree,
9878                                GtkRBNode   *node,
9879                                gboolean     open_all,
9880                                gboolean     animate)
9881 {
9882   GtkTreeIter iter;
9883   GtkTreeIter temp;
9884   gboolean expand;
9885
9886   if (node->children && !open_all)
9887     return FALSE;
9888
9889   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9890     return FALSE;
9891
9892   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
9893   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
9894     return FALSE;
9895
9896
9897    if (node->children && open_all)
9898     {
9899       gboolean retval = FALSE;
9900       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
9901
9902       gtk_tree_path_append_index (tmp_path, 0);
9903       tree = node->children;
9904       node = tree->root;
9905       while (node->left != tree->nil)
9906         node = node->left;
9907       /* try to expand the children */
9908       do
9909         {
9910          gboolean t;
9911          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
9912                                             TRUE, animate);
9913          if (t)
9914            retval = TRUE;
9915
9916          gtk_tree_path_next (tmp_path);
9917          node = _gtk_rbtree_next (tree, node);
9918        }
9919       while (node != NULL);
9920
9921       gtk_tree_path_free (tmp_path);
9922
9923       return retval;
9924     }
9925
9926   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
9927
9928   if (expand)
9929     return FALSE;
9930
9931   node->children = _gtk_rbtree_new ();
9932   node->children->parent_tree = tree;
9933   node->children->parent_node = node;
9934
9935   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
9936
9937   gtk_tree_view_build_tree (tree_view,
9938                             node->children,
9939                             &temp,
9940                             gtk_tree_path_get_depth (path) + 1,
9941                             open_all);
9942
9943   if (tree_view->priv->expand_collapse_timeout)
9944     {
9945       g_source_remove (tree_view->priv->expand_collapse_timeout);
9946       tree_view->priv->expand_collapse_timeout = 0;
9947     }
9948
9949   if (tree_view->priv->expanded_collapsed_node != NULL)
9950     {
9951       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
9952       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9953
9954       tree_view->priv->expanded_collapsed_node = NULL;
9955     }
9956
9957   if (animate)
9958     {
9959       tree_view->priv->expand_collapse_timeout = g_timeout_add (50, expand_collapse_timeout, tree_view);
9960       tree_view->priv->expanded_collapsed_node = node;
9961       tree_view->priv->expanded_collapsed_tree = tree;
9962
9963       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9964     }
9965
9966   install_presize_handler (tree_view);
9967
9968   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
9969   return TRUE;
9970 }
9971
9972
9973 /**
9974  * gtk_tree_view_expand_row:
9975  * @tree_view: a #GtkTreeView
9976  * @path: path to a row
9977  * @open_all: whether to recursively expand, or just expand immediate children
9978  *
9979  * Opens the row so its children are visible.
9980  *
9981  * Return value: %TRUE if the row existed and had children
9982  **/
9983 gboolean
9984 gtk_tree_view_expand_row (GtkTreeView *tree_view,
9985                           GtkTreePath *path,
9986                           gboolean     open_all)
9987 {
9988   GtkRBTree *tree;
9989   GtkRBNode *node;
9990
9991   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9992   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
9993   g_return_val_if_fail (path != NULL, FALSE);
9994
9995   if (_gtk_tree_view_find_node (tree_view,
9996                                 path,
9997                                 &tree,
9998                                 &node))
9999     return FALSE;
10000
10001   if (tree != NULL)
10002     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
10003   else
10004     return FALSE;
10005 }
10006
10007 static gboolean
10008 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
10009                                  GtkTreePath *path,
10010                                  GtkRBTree   *tree,
10011                                  GtkRBNode   *node,
10012                                  gboolean     animate)
10013 {
10014   GtkTreeIter iter;
10015   GtkTreeIter children;
10016   gboolean collapse;
10017   gint x, y;
10018   GList *list;
10019   GdkDisplay *display;
10020   GdkWindow *child, *parent;
10021
10022   if (node->children == NULL)
10023     return FALSE;
10024
10025   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
10026
10027   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
10028
10029   if (collapse)
10030     return FALSE;
10031
10032   /* if the prelighted node is a child of us, we want to unprelight it.  We have
10033    * a chance to prelight the correct node below */
10034
10035   if (tree_view->priv->prelight_tree)
10036     {
10037       GtkRBTree *parent_tree;
10038       GtkRBNode *parent_node;
10039
10040       parent_tree = tree_view->priv->prelight_tree->parent_tree;
10041       parent_node = tree_view->priv->prelight_tree->parent_node;
10042       while (parent_tree)
10043         {
10044           if (parent_tree == tree && parent_node == node)
10045             {
10046               ensure_unprelighted (tree_view);
10047               break;
10048             }
10049           parent_node = parent_tree->parent_node;
10050           parent_tree = parent_tree->parent_tree;
10051         }
10052     }
10053
10054   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
10055
10056   for (list = tree_view->priv->columns; list; list = list->next)
10057     {
10058       GtkTreeViewColumn *column = list->data;
10059
10060       if (column->visible == FALSE)
10061         continue;
10062       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
10063         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
10064     }
10065
10066   if (tree_view->priv->destroy_count_func)
10067     {
10068       GtkTreePath *child_path;
10069       gint child_count = 0;
10070       child_path = gtk_tree_path_copy (path);
10071       gtk_tree_path_down (child_path);
10072       if (node->children)
10073         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
10074       (* tree_view->priv->destroy_count_func) (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
10075       gtk_tree_path_free (child_path);
10076     }
10077
10078   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10079     {
10080       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10081
10082       if (gtk_tree_path_is_ancestor (path, cursor_path))
10083         {
10084           gtk_tree_row_reference_free (tree_view->priv->cursor);
10085           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10086                                                                       tree_view->priv->model,
10087                                                                       path);
10088         }
10089       gtk_tree_path_free (cursor_path);
10090     }
10091
10092   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
10093     {
10094       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
10095       if (gtk_tree_path_is_ancestor (path, anchor_path))
10096         {
10097           gtk_tree_row_reference_free (tree_view->priv->anchor);
10098           tree_view->priv->anchor = NULL;
10099         }
10100       gtk_tree_path_free (anchor_path);
10101     }
10102
10103   if (gtk_tree_row_reference_valid (tree_view->priv->last_button_press))
10104     {
10105       GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press);
10106       if (gtk_tree_path_is_ancestor (path, lsc))
10107         {
10108           gtk_tree_row_reference_free (tree_view->priv->last_button_press);
10109           tree_view->priv->last_button_press = NULL;
10110         }
10111       gtk_tree_path_free (lsc);
10112     }
10113
10114   if (gtk_tree_row_reference_valid (tree_view->priv->last_button_press_2))
10115     {
10116       GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press_2);
10117       if (gtk_tree_path_is_ancestor (path, lsc))
10118         {
10119           gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
10120           tree_view->priv->last_button_press_2 = NULL;
10121         }
10122       gtk_tree_path_free (lsc);
10123     }
10124
10125   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
10126     {
10127       _gtk_rbtree_remove (node->children);
10128       g_signal_emit_by_name (tree_view->priv->selection, "changed");
10129     }
10130   else
10131     _gtk_rbtree_remove (node->children);
10132
10133   if (tree_view->priv->expand_collapse_timeout)
10134     {
10135       g_source_remove (tree_view->priv->expand_collapse_timeout);
10136       tree_view->priv->expand_collapse_timeout = 0;
10137     }
10138
10139   if (tree_view->priv->expanded_collapsed_node != NULL)
10140     {
10141       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
10142       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
10143
10144       tree_view->priv->expanded_collapsed_node = NULL;
10145     }
10146
10147   if (animate)
10148     {
10149       tree_view->priv->expand_collapse_timeout = g_timeout_add (50, expand_collapse_timeout, tree_view);
10150       tree_view->priv->expanded_collapsed_node = node;
10151       tree_view->priv->expanded_collapsed_tree = tree;
10152
10153       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
10154     }
10155
10156   if (GTK_WIDGET_MAPPED (tree_view))
10157     {
10158       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10159     }
10160
10161   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
10162
10163   if (GTK_WIDGET_MAPPED (tree_view))
10164     {
10165       /* now that we've collapsed all rows, we want to try to set the prelight
10166        * again. To do this, we fake a motion event and send it to ourselves. */
10167
10168       display = gdk_drawable_get_display (tree_view->priv->bin_window);
10169       child = tree_view->priv->bin_window;
10170       parent = gdk_window_get_parent (child);
10171
10172       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
10173         {
10174           GdkEventMotion event;
10175           gint child_x, child_y;
10176
10177           gdk_window_get_position (child, &child_x, &child_y);
10178
10179           event.window = tree_view->priv->bin_window;
10180           event.x = x - child_x;
10181           event.y = y - child_y;
10182
10183           /* despite the fact this isn't a real event, I'm almost positive it will
10184            * never trigger a drag event.  maybe_drag is the only function that uses
10185            * more than just event.x and event.y. */
10186           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
10187         }
10188     }
10189
10190   return TRUE;
10191 }
10192
10193 /**
10194  * gtk_tree_view_collapse_row:
10195  * @tree_view: a #GtkTreeView
10196  * @path: path to a row in the @tree_view
10197  *
10198  * Collapses a row (hides its child rows, if they exist).
10199  *
10200  * Return value: %TRUE if the row was collapsed.
10201  **/
10202 gboolean
10203 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
10204                             GtkTreePath *path)
10205 {
10206   GtkRBTree *tree;
10207   GtkRBNode *node;
10208
10209   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10210   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
10211   g_return_val_if_fail (path != NULL, FALSE);
10212
10213   if (_gtk_tree_view_find_node (tree_view,
10214                                 path,
10215                                 &tree,
10216                                 &node))
10217     return FALSE;
10218
10219   if (tree == NULL || node->children == NULL)
10220     return FALSE;
10221
10222   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
10223 }
10224
10225 static void
10226 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
10227                                         GtkRBTree              *tree,
10228                                         GtkTreePath            *path,
10229                                         GtkTreeViewMappingFunc  func,
10230                                         gpointer                user_data)
10231 {
10232   GtkRBNode *node;
10233
10234   if (tree == NULL || tree->root == NULL)
10235     return;
10236
10237   node = tree->root;
10238
10239   while (node && node->left != tree->nil)
10240     node = node->left;
10241
10242   while (node)
10243     {
10244       if (node->children)
10245         {
10246           (* func) (tree_view, path, user_data);
10247           gtk_tree_path_down (path);
10248           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
10249           gtk_tree_path_up (path);
10250         }
10251       gtk_tree_path_next (path);
10252       node = _gtk_rbtree_next (tree, node);
10253     }
10254 }
10255
10256 /**
10257  * gtk_tree_view_map_expanded_rows:
10258  * @tree_view: A #GtkTreeView
10259  * @func: A function to be called
10260  * @data: User data to be passed to the function.
10261  *
10262  * Calls @func on all expanded rows.
10263  **/
10264 void
10265 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
10266                                  GtkTreeViewMappingFunc  func,
10267                                  gpointer                user_data)
10268 {
10269   GtkTreePath *path;
10270
10271   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10272   g_return_if_fail (func != NULL);
10273
10274   path = gtk_tree_path_new_first ();
10275
10276   gtk_tree_view_map_expanded_rows_helper (tree_view,
10277                                           tree_view->priv->tree,
10278                                           path, func, user_data);
10279
10280   gtk_tree_path_free (path);
10281 }
10282
10283 /**
10284  * gtk_tree_view_row_expanded:
10285  * @tree_view: A #GtkTreeView.
10286  * @path: A #GtkTreePath to test expansion state.
10287  *
10288  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
10289  *
10290  * Return value: %TRUE if #path is expanded.
10291  **/
10292 gboolean
10293 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
10294                             GtkTreePath *path)
10295 {
10296   GtkRBTree *tree;
10297   GtkRBNode *node;
10298
10299   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10300   g_return_val_if_fail (path != NULL, FALSE);
10301
10302   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10303
10304   if (node == NULL)
10305     return FALSE;
10306
10307   return (node->children != NULL);
10308 }
10309
10310 static const GtkTargetEntry row_targets[] = {
10311   { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
10312 };
10313
10314
10315 /**
10316  * gtk_tree_view_get_reorderable:
10317  * @tree_view: a #GtkTreeView
10318  *
10319  * Retrieves whether the user can reorder the tree via drag-and-drop. See
10320  * gtk_tree_view_set_reorderable().
10321  *
10322  * Return value: %TRUE if the tree can be reordered.
10323  **/
10324 gboolean
10325 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
10326 {
10327   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10328
10329   return tree_view->priv->reorderable;
10330 }
10331
10332 /**
10333  * gtk_tree_view_set_reorderable:
10334  * @tree_view: A #GtkTreeView.
10335  * @reorderable: %TRUE, if the tree can be reordered.
10336  *
10337  * This function is a convenience function to allow you to reorder models that
10338  * support the #GtkDragSourceIface and the #GtkDragDestIface.  Both
10339  * #GtkTreeStore and #GtkListStore support these.  If @reorderable is %TRUE, then
10340  * the user can reorder the model by dragging and dropping rows.  The
10341  * developer can listen to these changes by connecting to the model's
10342  * row_inserted and row_deleted signals.
10343  *
10344  * This function does not give you any degree of control over the order -- any
10345  * reordering is allowed.  If more control is needed, you should probably
10346  * handle drag and drop manually.
10347  **/
10348 void
10349 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
10350                                gboolean     reorderable)
10351 {
10352   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10353
10354   reorderable = reorderable != FALSE;
10355
10356   if (tree_view->priv->reorderable == reorderable)
10357     return;
10358
10359   if (reorderable)
10360     {
10361       gtk_tree_view_enable_model_drag_source (tree_view,
10362                                               GDK_BUTTON1_MASK,
10363                                               row_targets,
10364                                               G_N_ELEMENTS (row_targets),
10365                                               GDK_ACTION_MOVE);
10366       gtk_tree_view_enable_model_drag_dest (tree_view,
10367                                             row_targets,
10368                                             G_N_ELEMENTS (row_targets),
10369                                             GDK_ACTION_MOVE);
10370     }
10371   else
10372     {
10373       gtk_tree_view_unset_rows_drag_source (tree_view);
10374       gtk_tree_view_unset_rows_drag_dest (tree_view);
10375     }
10376
10377   tree_view->priv->reorderable = reorderable;
10378
10379   g_object_notify (G_OBJECT (tree_view), "reorderable");
10380 }
10381
10382 static void
10383 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
10384                                GtkTreePath     *path,
10385                                gboolean         clear_and_select,
10386                                gboolean         clamp_node)
10387 {
10388   GtkRBTree *tree = NULL;
10389   GtkRBNode *node = NULL;
10390
10391   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10392     {
10393       GtkTreePath *cursor_path;
10394       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10395       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10396       gtk_tree_path_free (cursor_path);
10397     }
10398
10399   gtk_tree_row_reference_free (tree_view->priv->cursor);
10400
10401   tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
10402                                                               tree_view->priv->model,
10403                                                               path);
10404   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10405   if (tree != NULL)
10406     {
10407       GtkRBTree *new_tree = NULL;
10408       GtkRBNode *new_node = NULL;
10409
10410       if (clear_and_select && !tree_view->priv->ctrl_pressed)
10411         {
10412           GtkTreeSelectMode mode = 0;
10413
10414           if (tree_view->priv->ctrl_pressed)
10415             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
10416           if (tree_view->priv->shift_pressed)
10417             mode |= GTK_TREE_SELECT_MODE_EXTEND;
10418
10419           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10420                                                     node, tree, path, mode,
10421                                                     FALSE);
10422         }
10423
10424       /* We have to re-find tree and node here again, somebody might have
10425        * cleared the node or the whole tree in the GtkTreeSelection::changed
10426        * callback. If the nodes differ we bail out here.
10427        */
10428       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
10429
10430       if (tree != new_tree || node != new_node)
10431         return;
10432
10433       if (clamp_node)
10434         {
10435           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
10436           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
10437         }
10438     }
10439
10440   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
10441 }
10442
10443 /**
10444  * gtk_tree_view_get_cursor:
10445  * @tree_view: A #GtkTreeView
10446  * @path: A pointer to be filled with the current cursor path, or %NULL
10447  * @focus_column: A pointer to be filled with the current focus column, or %NULL
10448  *
10449  * Fills in @path and @focus_column with the current path and focus column.  If
10450  * the cursor isn't currently set, then *@path will be %NULL.  If no column
10451  * currently has focus, then *@focus_column will be %NULL.
10452  *
10453  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
10454  * you are done with it.
10455  **/
10456 void
10457 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
10458                           GtkTreePath       **path,
10459                           GtkTreeViewColumn **focus_column)
10460 {
10461   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10462
10463   if (path)
10464     {
10465       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
10466         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10467       else
10468         *path = NULL;
10469     }
10470
10471   if (focus_column)
10472     {
10473       *focus_column = tree_view->priv->focus_column;
10474     }
10475 }
10476
10477 /**
10478  * gtk_tree_view_set_cursor:
10479  * @tree_view: A #GtkTreeView
10480  * @path: A #GtkTreePath
10481  * @focus_column: A #GtkTreeViewColumn, or %NULL
10482  * @start_editing: %TRUE if the specified cell should start being edited.
10483  *
10484  * Sets the current keyboard focus to be at @path, and selects it.  This is
10485  * useful when you want to focus the user's attention on a particular row.  If
10486  * @focus_column is not %NULL, then focus is given to the column specified by
10487  * it. Additionally, if @focus_column is specified, and @start_editing is
10488  * %TRUE, then editing should be started in the specified cell.
10489  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
10490  * in order to give keyboard focus to the widget.  Please note that editing
10491  * can only happen when the widget is realized.
10492  **/
10493 void
10494 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
10495                           GtkTreePath       *path,
10496                           GtkTreeViewColumn *focus_column,
10497                           gboolean           start_editing)
10498 {
10499   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
10500                                     NULL, start_editing);
10501 }
10502
10503 /**
10504  * gtk_tree_view_set_cursor_on_cell:
10505  * @tree_view: A #GtkTreeView
10506  * @path: A #GtkTreePath
10507  * @focus_column: A #GtkTreeViewColumn, or %NULL
10508  * @focus_cell: A #GtkCellRenderer, or %NULL
10509  * @start_editing: %TRUE if the specified cell should start being edited.
10510  *
10511  * Sets the current keyboard focus to be at @path, and selects it.  This is
10512  * useful when you want to focus the user's attention on a particular row.  If
10513  * @focus_column is not %NULL, then focus is given to the column specified by
10514  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
10515  * contains 2 or more editable or activatable cells, then focus is given to
10516  * the cell specified by @focus_cell. Additionally, if @focus_column is
10517  * specified, and @start_editing is %TRUE, then editing should be started in
10518  * the specified cell.  This function is often followed by
10519  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
10520  * widget.  Please note that editing can only happen when the widget is
10521  * realized.
10522  *
10523  * Since: 2.2
10524  **/
10525 void
10526 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
10527                                   GtkTreePath       *path,
10528                                   GtkTreeViewColumn *focus_column,
10529                                   GtkCellRenderer   *focus_cell,
10530                                   gboolean           start_editing)
10531 {
10532   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10533   g_return_if_fail (path != NULL);
10534   if (focus_column)
10535     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (focus_column));
10536   if (focus_cell)
10537     {
10538       g_return_if_fail (focus_column);
10539       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
10540     }
10541
10542   /* cancel the current editing, if it exists */
10543   if (tree_view->priv->edited_column &&
10544       tree_view->priv->edited_column->editable_widget)
10545     gtk_tree_view_stop_editing (tree_view, TRUE);
10546
10547   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
10548
10549   if (focus_column && focus_column->visible)
10550     {
10551       GList *list;
10552       gboolean column_in_tree = FALSE;
10553
10554       for (list = tree_view->priv->columns; list; list = list->next)
10555         if (list->data == focus_column)
10556           {
10557             column_in_tree = TRUE;
10558             break;
10559           }
10560       g_return_if_fail (column_in_tree);
10561       tree_view->priv->focus_column = focus_column;
10562       if (focus_cell)
10563         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
10564       if (start_editing)
10565         gtk_tree_view_start_editing (tree_view, path);
10566     }
10567 }
10568
10569 /**
10570  * gtk_tree_view_get_bin_window:
10571  * @tree_view: A #GtkTreeView
10572  *
10573  * Returns the window that @tree_view renders to.  This is used primarily to
10574  * compare to <literal>event->window</literal> to confirm that the event on
10575  * @tree_view is on the right window.
10576  *
10577  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
10578  **/
10579 GdkWindow *
10580 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
10581 {
10582   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10583
10584   return tree_view->priv->bin_window;
10585 }
10586
10587 /**
10588  * gtk_tree_view_get_path_at_pos:
10589  * @tree_view: A #GtkTreeView.
10590  * @x: The x position to be identified.
10591  * @y: The y position to be identified.
10592  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
10593  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
10594  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
10595  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
10596  *
10597  * Finds the path at the point (@x, @y), relative to widget coordinates.  That
10598  * is, @x and @y are relative to an events coordinates. @x and @y must come
10599  * from an event on the @tree_view only where event->window ==
10600  * gtk_tree_view_get_bin (). It is primarily for things like popup menus.
10601  * If @path is non-%NULL, then it will be filled with the #GtkTreePath at that
10602  * point.  This path should be freed with gtk_tree_path_free().  If @column
10603  * is non-%NULL, then it will be filled with the column at that point.
10604  * @cell_x and @cell_y return the coordinates relative to the cell background
10605  * (i.e. the @background_area passed to gtk_cell_renderer_render()).  This
10606  * function is only meaningful if @tree_view is realized.
10607  *
10608  * Return value: %TRUE if a row exists at that coordinate.
10609  **/
10610 gboolean
10611 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
10612                                gint                x,
10613                                gint                y,
10614                                GtkTreePath       **path,
10615                                GtkTreeViewColumn **column,
10616                                gint               *cell_x,
10617                                gint               *cell_y)
10618 {
10619   GtkRBTree *tree;
10620   GtkRBNode *node;
10621   gint y_offset;
10622
10623   g_return_val_if_fail (tree_view != NULL, FALSE);
10624   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
10625
10626   if (path)
10627     *path = NULL;
10628   if (column)
10629     *column = NULL;
10630
10631   if (tree_view->priv->tree == NULL)
10632     return FALSE;
10633
10634   if (x > tree_view->priv->hadjustment->upper)
10635     return FALSE;
10636
10637   if (x < 0 || y < 0)
10638     return FALSE;
10639
10640   if (column || cell_x)
10641     {
10642       GtkTreeViewColumn *tmp_column;
10643       GtkTreeViewColumn *last_column = NULL;
10644       GList *list;
10645       gint remaining_x = x;
10646       gboolean found = FALSE;
10647
10648       for (list = tree_view->priv->columns; list; list = list->next)
10649         {
10650           tmp_column = list->data;
10651
10652           if (tmp_column->visible == FALSE)
10653             continue;
10654
10655           last_column = tmp_column;
10656           if (remaining_x <= tmp_column->width)
10657             {
10658               found = TRUE;
10659
10660               if (column)
10661                 *column = tmp_column;
10662
10663               if (cell_x)
10664                 *cell_x = remaining_x;
10665
10666               break;
10667             }
10668           remaining_x -= tmp_column->width;
10669         }
10670
10671       /* If found is FALSE and there is a last_column, then it the remainder
10672        * space is in that area
10673        */
10674       if (!found)
10675         {
10676           if (last_column)
10677             {
10678               if (column)
10679                 *column = last_column;
10680
10681               if (cell_x)
10682                 *cell_x = last_column->width + remaining_x;
10683             }
10684           else
10685             {
10686               return FALSE;
10687             }
10688         }
10689     }
10690
10691   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
10692                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
10693                                       &tree, &node);
10694
10695   if (tree == NULL)
10696     return FALSE;
10697
10698   if (cell_y)
10699     *cell_y = y_offset;
10700
10701   if (path)
10702     *path = _gtk_tree_view_find_path (tree_view, tree, node);
10703
10704   return TRUE;
10705 }
10706
10707
10708 /**
10709  * gtk_tree_view_get_cell_area:
10710  * @tree_view: a #GtkTreeView
10711  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
10712  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
10713  * @rect: rectangle to fill with cell rect
10714  *
10715  * Fills the bounding rectangle in tree window coordinates for the cell at the
10716  * row specified by @path and the column specified by @column.  If @path is
10717  * %NULL, or points to a path not currently displayed, the @y and @height fields
10718  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
10719  * fields will be filled with 0.  The sum of all cell rects does not cover the
10720  * entire tree; there are extra pixels in between rows, for example. The
10721  * returned rectangle is equivalent to the @cell_area passed to
10722  * gtk_cell_renderer_render().  This function is only valid if #tree_view is
10723  * realized.
10724  **/
10725 void
10726 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
10727                              GtkTreePath        *path,
10728                              GtkTreeViewColumn  *column,
10729                              GdkRectangle       *rect)
10730 {
10731   GtkRBTree *tree = NULL;
10732   GtkRBNode *node = NULL;
10733   gint vertical_separator;
10734   gint horizontal_separator;
10735
10736   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10737   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
10738   g_return_if_fail (rect != NULL);
10739   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
10740   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
10741
10742   gtk_widget_style_get (GTK_WIDGET (tree_view),
10743                         "vertical_separator", &vertical_separator,
10744                         "horizontal_separator", &horizontal_separator,
10745                         NULL);
10746
10747   rect->x = 0;
10748   rect->y = 0;
10749   rect->width = 0;
10750   rect->height = 0;
10751
10752   if (column)
10753     {
10754       rect->x = column->button->allocation.x + horizontal_separator/2;
10755       rect->width = column->button->allocation.width - horizontal_separator;
10756     }
10757
10758   if (path)
10759     {
10760       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10761
10762       /* Get vertical coords */
10763       if ((!ret && tree == NULL) || ret)
10764         return;
10765
10766       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
10767       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
10768
10769       if (gtk_tree_view_is_expander_column (tree_view, column) &&
10770           TREE_VIEW_DRAW_EXPANDERS (tree_view))
10771         {
10772           gint depth = gtk_tree_path_get_depth (path) - 1;
10773
10774           rect->x += depth * tree_view->priv->expander_size;
10775           rect->width -= depth * tree_view->priv->expander_size;
10776           rect->width = MAX (rect->width, 0);
10777         }
10778     }
10779 }
10780
10781 /**
10782  * gtk_tree_view_get_background_area:
10783  * @tree_view: a #GtkTreeView
10784  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
10785  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
10786  * @rect: rectangle to fill with cell background rect
10787  *
10788  * Fills the bounding rectangle in tree window coordinates for the cell at the
10789  * row specified by @path and the column specified by @column.  If @path is
10790  * %NULL, or points to a node not found in the tree, the @y and @height fields of
10791  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
10792  * fields will be filled with 0.  The returned rectangle is equivalent to the
10793  * @background_area passed to gtk_cell_renderer_render().  These background
10794  * areas tile to cover the entire tree window (except for the area used for
10795  * header buttons). Contrast with the @cell_area, returned by
10796  * gtk_tree_view_get_cell_area(), which returns only the cell itself, excluding
10797  * surrounding borders and the tree expander area.
10798  *
10799  **/
10800 void
10801 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
10802                                    GtkTreePath        *path,
10803                                    GtkTreeViewColumn  *column,
10804                                    GdkRectangle       *rect)
10805 {
10806   GtkRBTree *tree = NULL;
10807   GtkRBNode *node = NULL;
10808
10809   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10810   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
10811   g_return_if_fail (rect != NULL);
10812
10813   rect->x = 0;
10814   rect->y = 0;
10815   rect->width = 0;
10816   rect->height = 0;
10817
10818   if (path)
10819     {
10820       /* Get vertical coords */
10821
10822       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
10823           tree == NULL)
10824         return;
10825
10826       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
10827
10828       rect->height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
10829     }
10830
10831   if (column)
10832     {
10833       gint x2 = 0;
10834
10835       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
10836       rect->width = x2 - rect->x;
10837     }
10838 }
10839
10840 /**
10841  * gtk_tree_view_get_visible_rect:
10842  * @tree_view: a #GtkTreeView
10843  * @visible_rect: rectangle to fill
10844  *
10845  * Fills @visible_rect with the currently-visible region of the
10846  * buffer, in tree coordinates. Convert to widget coordinates with
10847  * gtk_tree_view_tree_to_widget_coords(). Tree coordinates start at
10848  * 0,0 for row 0 of the tree, and cover the entire scrollable area of
10849  * the tree.
10850  **/
10851 void
10852 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
10853                                 GdkRectangle *visible_rect)
10854 {
10855   GtkWidget *widget;
10856
10857   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10858
10859   widget = GTK_WIDGET (tree_view);
10860
10861   if (visible_rect)
10862     {
10863       visible_rect->x = tree_view->priv->hadjustment->value;
10864       visible_rect->y = tree_view->priv->vadjustment->value;
10865       visible_rect->width = widget->allocation.width;
10866       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
10867     }
10868 }
10869
10870 /**
10871  * gtk_tree_view_widget_to_tree_coords:
10872  * @tree_view: a #GtkTreeView
10873  * @wx: widget X coordinate
10874  * @wy: widget Y coordinate
10875  * @tx: return location for tree X coordinate
10876  * @ty: return location for tree Y coordinate
10877  *
10878  * Converts widget coordinates to coordinates for the
10879  * tree window (the full scrollable area of the tree).
10880  *
10881  **/
10882 void
10883 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
10884                                      gint         wx,
10885                                      gint         wy,
10886                                      gint        *tx,
10887                                      gint        *ty)
10888 {
10889   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10890
10891   if (tx)
10892     *tx = wx + tree_view->priv->hadjustment->value;
10893   if (ty)
10894     *ty = wy + tree_view->priv->dy;
10895 }
10896
10897 /**
10898  * gtk_tree_view_tree_to_widget_coords:
10899  * @tree_view: a #GtkTreeView
10900  * @tx: tree X coordinate
10901  * @ty: tree Y coordinate
10902  * @wx: return location for widget X coordinate
10903  * @wy: return location for widget Y coordinate
10904  *
10905  * Converts tree coordinates (coordinates in full scrollable area of the tree)
10906  * to widget coordinates.
10907  *
10908  **/
10909 void
10910 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
10911                                      gint         tx,
10912                                      gint         ty,
10913                                      gint        *wx,
10914                                      gint        *wy)
10915 {
10916   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10917
10918   if (wx)
10919     *wx = tx - tree_view->priv->hadjustment->value;
10920   if (wy)
10921     *wy = ty - tree_view->priv->dy;
10922 }
10923
10924 static void
10925 unset_reorderable (GtkTreeView *tree_view)
10926 {
10927   if (tree_view->priv->reorderable)
10928     {
10929       tree_view->priv->reorderable = FALSE;
10930       g_object_notify (G_OBJECT (tree_view), "reorderable");
10931     }
10932 }
10933
10934 /**
10935  * gtk_tree_view_enable_model_drag_source:
10936  * @tree_view: a #GtkTreeView
10937  * @start_button_mask: Mask of allowed buttons to start drag
10938  * @targets: the table of targets that the drag will support
10939  * @n_targets: the number of items in @targets
10940  * @actions: the bitmask of possible actions for a drag from this
10941  *    widget
10942  *
10943  * Turns @tree_view into a drag source for automatic DND.
10944  **/
10945 void
10946 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
10947                                         GdkModifierType           start_button_mask,
10948                                         const GtkTargetEntry     *targets,
10949                                         gint                      n_targets,
10950                                         GdkDragAction             actions)
10951 {
10952   TreeViewDragInfo *di;
10953
10954   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10955
10956   gtk_drag_source_set (GTK_WIDGET (tree_view),
10957                        0,
10958                        NULL,
10959                        0,
10960                        actions);
10961
10962   di = ensure_info (tree_view);
10963   clear_source_info (di);
10964
10965   di->start_button_mask = start_button_mask;
10966   di->source_target_list = gtk_target_list_new (targets, n_targets);
10967   di->source_actions = actions;
10968
10969   di->source_set = TRUE;
10970
10971   unset_reorderable (tree_view);
10972 }
10973
10974 /**
10975  * gtk_tree_view_enable_model_drag_dest:
10976  * @tree_view: a #GtkTreeView
10977  * @targets: the table of targets that the drag will support
10978  * @n_targets: the number of items in @targets
10979  * @actions: the bitmask of possible actions for a drag from this
10980  *    widget
10981  *
10982  * Turns @tree_view into a drop destination for automatic DND.
10983  **/
10984 void
10985 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
10986                                       const GtkTargetEntry     *targets,
10987                                       gint                      n_targets,
10988                                       GdkDragAction             actions)
10989 {
10990   TreeViewDragInfo *di;
10991
10992   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10993
10994   gtk_drag_dest_set (GTK_WIDGET (tree_view),
10995                      0,
10996                      NULL,
10997                      0,
10998                      actions);
10999
11000   di = ensure_info (tree_view);
11001   clear_dest_info (di);
11002
11003   if (targets)
11004     di->dest_target_list = gtk_target_list_new (targets, n_targets);
11005
11006   di->dest_set = TRUE;
11007
11008   unset_reorderable (tree_view);
11009 }
11010
11011 /**
11012  * gtk_tree_view_unset_rows_drag_source:
11013  * @tree_view: a #GtkTreeView
11014  *
11015  * Undoes the effect of gtk_tree_view_enable_model_drag_source().
11016  **/
11017 void
11018 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
11019 {
11020   TreeViewDragInfo *di;
11021
11022   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11023
11024   di = get_info (tree_view);
11025
11026   if (di)
11027     {
11028       if (di->source_set)
11029         {
11030           gtk_drag_source_unset (GTK_WIDGET (tree_view));
11031           clear_source_info (di);
11032           di->source_set = FALSE;
11033         }
11034
11035       if (!di->dest_set && !di->source_set)
11036         remove_info (tree_view);
11037     }
11038
11039   unset_reorderable (tree_view);
11040 }
11041
11042 /**
11043  * gtk_tree_view_unset_rows_drag_dest:
11044  * @tree_view: a #GtkTreeView
11045  *
11046  * Undoes the effect of gtk_tree_view_enable_model_drag_dest().
11047  **/
11048 void
11049 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
11050 {
11051   TreeViewDragInfo *di;
11052
11053   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11054
11055   di = get_info (tree_view);
11056
11057   if (di)
11058     {
11059       if (di->dest_set)
11060         {
11061           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
11062           clear_dest_info (di);
11063           di->dest_set = FALSE;
11064         }
11065
11066       if (!di->dest_set && !di->source_set)
11067         remove_info (tree_view);
11068     }
11069
11070   unset_reorderable (tree_view);
11071 }
11072
11073 /**
11074  * gtk_tree_view_set_drag_dest_row:
11075  * @tree_view: a #GtkTreeView
11076  * @path: The path of the row to highlight, or %NULL.
11077  * @pos: Specifies whether to drop before, after or into the row
11078  *
11079  * Sets the row that is highlighted for feedback.
11080  **/
11081 void
11082 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
11083                                  GtkTreePath            *path,
11084                                  GtkTreeViewDropPosition pos)
11085 {
11086   GtkTreePath *current_dest;
11087
11088   /* Note; this function is exported to allow a custom DND
11089    * implementation, so it can't touch TreeViewDragInfo
11090    */
11091
11092   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11093
11094   current_dest = NULL;
11095
11096   if (tree_view->priv->drag_dest_row)
11097     {
11098       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
11099       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
11100     }
11101
11102   /* special case a drop on an empty model */
11103   tree_view->priv->empty_view_drop = 0;
11104
11105   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
11106       && gtk_tree_path_get_depth (path) == 1
11107       && gtk_tree_path_get_indices (path)[0] == 0)
11108     {
11109       gint n_children;
11110
11111       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
11112                                                    NULL);
11113
11114       if (!n_children)
11115         tree_view->priv->empty_view_drop = 1;
11116     }
11117
11118   tree_view->priv->drag_dest_pos = pos;
11119
11120   if (path)
11121     {
11122       tree_view->priv->drag_dest_row =
11123         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11124       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
11125     }
11126   else
11127     tree_view->priv->drag_dest_row = NULL;
11128
11129   if (current_dest)
11130     {
11131       GtkRBTree *tree, *new_tree;
11132       GtkRBNode *node, *new_node;
11133
11134       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
11135       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
11136
11137       if (tree && node)
11138         {
11139           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
11140           if (new_tree && new_node)
11141             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
11142
11143           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
11144           if (new_tree && new_node)
11145             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
11146         }
11147       gtk_tree_path_free (current_dest);
11148     }
11149 }
11150
11151 /**
11152  * gtk_tree_view_get_drag_dest_row:
11153  * @tree_view: a #GtkTreeView
11154  * @path: Return location for the path of the highlighted row, or %NULL.
11155  * @pos: Return location for the drop position, or %NULL
11156  *
11157  * Gets information about the row that is highlighted for feedback.
11158  **/
11159 void
11160 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
11161                                  GtkTreePath             **path,
11162                                  GtkTreeViewDropPosition  *pos)
11163 {
11164   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11165
11166   if (path)
11167     {
11168       if (tree_view->priv->drag_dest_row)
11169         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
11170       else
11171         {
11172           if (tree_view->priv->empty_view_drop)
11173             *path = gtk_tree_path_new_from_indices (0, -1);
11174           else
11175             *path = NULL;
11176         }
11177     }
11178
11179   if (pos)
11180     *pos = tree_view->priv->drag_dest_pos;
11181 }
11182
11183 /**
11184  * gtk_tree_view_get_dest_row_at_pos:
11185  * @tree_view: a #GtkTreeView
11186  * @drag_x: the position to determine the destination row for
11187  * @drag_y: the position to determine the destination row for
11188  * @path: Return location for the path of the highlighted row, or %NULL.
11189  * @pos: Return location for the drop position, or %NULL
11190  *
11191  * Determines the destination row for a given position.
11192  *
11193  * Return value: whether there is a row at the given postiion,
11194  **/
11195 gboolean
11196 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
11197                                    gint                     drag_x,
11198                                    gint                     drag_y,
11199                                    GtkTreePath            **path,
11200                                    GtkTreeViewDropPosition *pos)
11201 {
11202   gint cell_y;
11203   gdouble offset_into_row;
11204   gdouble third;
11205   GdkRectangle cell;
11206   GtkTreeViewColumn *column = NULL;
11207   GtkTreePath *tmp_path = NULL;
11208
11209   /* Note; this function is exported to allow a custom DND
11210    * implementation, so it can't touch TreeViewDragInfo
11211    */
11212
11213   g_return_val_if_fail (tree_view != NULL, FALSE);
11214   g_return_val_if_fail (drag_x >= 0, FALSE);
11215   g_return_val_if_fail (drag_y >= 0, FALSE);
11216   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
11217
11218
11219   if (path)
11220     *path = NULL;
11221
11222   if (tree_view->priv->tree == NULL)
11223     return FALSE;
11224
11225   /* If in the top third of a row, we drop before that row; if
11226    * in the bottom third, drop after that row; if in the middle,
11227    * and the row has children, drop into the row.
11228    */
11229
11230   if (!gtk_tree_view_get_path_at_pos (tree_view,
11231                                       drag_x,
11232                                       drag_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
11233                                       &tmp_path,
11234                                       &column,
11235                                       NULL,
11236                                       &cell_y))
11237     return FALSE;
11238
11239   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
11240                                      &cell);
11241
11242   offset_into_row = cell_y;
11243
11244   if (path)
11245     *path = tmp_path;
11246   else
11247     gtk_tree_path_free (tmp_path);
11248
11249   tmp_path = NULL;
11250
11251   third = cell.height / 3.0;
11252
11253   if (pos)
11254     {
11255       if (offset_into_row < third)
11256         {
11257           *pos = GTK_TREE_VIEW_DROP_BEFORE;
11258         }
11259       else if (offset_into_row < (cell.height / 2.0))
11260         {
11261           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
11262         }
11263       else if (offset_into_row < third * 2.0)
11264         {
11265           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
11266         }
11267       else
11268         {
11269           *pos = GTK_TREE_VIEW_DROP_AFTER;
11270         }
11271     }
11272
11273   return TRUE;
11274 }
11275
11276
11277
11278 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
11279 /**
11280  * gtk_tree_view_create_row_drag_icon:
11281  * @tree_view: a #GtkTreeView
11282  * @path: a #GtkTreePath in @tree_view
11283  *
11284  * Creates a #GdkPixmap representation of the row at @path.  This image is used
11285  * for a drag icon.
11286  *
11287  * Return value: a newly-allocated pixmap of the drag icon.
11288  **/
11289 GdkPixmap *
11290 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
11291                                     GtkTreePath  *path)
11292 {
11293   GtkTreeIter   iter;
11294   GtkRBTree    *tree;
11295   GtkRBNode    *node;
11296   gint cell_offset;
11297   GList *list;
11298   GdkRectangle background_area;
11299   GdkRectangle expose_area;
11300   GtkWidget *widget;
11301   gint depth;
11302   /* start drawing inside the black outline */
11303   gint x = 1, y = 1;
11304   GdkDrawable *drawable;
11305   gint bin_window_width;
11306
11307   widget = GTK_WIDGET (tree_view);
11308
11309   depth = gtk_tree_path_get_depth (path);
11310
11311   _gtk_tree_view_find_node (tree_view,
11312                             path,
11313                             &tree,
11314                             &node);
11315
11316   if (tree == NULL)
11317     return NULL;
11318
11319   if (!gtk_tree_model_get_iter (tree_view->priv->model,
11320                                 &iter,
11321                                 path))
11322     return NULL;
11323
11324   cell_offset = x;
11325
11326   background_area.y = y;
11327   background_area.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
11328
11329   gdk_drawable_get_size (tree_view->priv->bin_window,
11330                          &bin_window_width, NULL);
11331
11332   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
11333                              bin_window_width + 2,
11334                              background_area.height + 2,
11335                              -1);
11336
11337   expose_area.x = 0;
11338   expose_area.y = 0;
11339   expose_area.width = bin_window_width + 2;
11340   expose_area.height = background_area.height + 2;
11341
11342   gdk_draw_rectangle (drawable,
11343                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
11344                       TRUE,
11345                       0, 0,
11346                       bin_window_width + 2,
11347                       background_area.height + 2);
11348
11349   for (list = tree_view->priv->columns; list; list = list->next)
11350     {
11351       GtkTreeViewColumn *column = list->data;
11352       GdkRectangle cell_area;
11353       gint vertical_separator;
11354
11355       if (!column->visible)
11356         continue;
11357
11358       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
11359                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
11360                                                node->children?TRUE:FALSE);
11361
11362       background_area.x = cell_offset;
11363       background_area.width = column->width;
11364
11365       cell_area = background_area;
11366
11367       gtk_widget_style_get (widget, "vertical_separator", &vertical_separator, NULL);
11368       cell_area.y += vertical_separator / 2;
11369       cell_area.height -= vertical_separator;
11370
11371       if (gtk_tree_view_is_expander_column (tree_view, column) &&
11372           TREE_VIEW_DRAW_EXPANDERS(tree_view))
11373         {
11374           cell_area.x += depth * tree_view->priv->expander_size;
11375           cell_area.width -= depth * tree_view->priv->expander_size;
11376         }
11377
11378       if (gtk_tree_view_column_cell_is_visible (column))
11379         _gtk_tree_view_column_cell_render (column,
11380                                            drawable,
11381                                            &background_area,
11382                                            &cell_area,
11383                                            &expose_area,
11384                                            0);
11385       cell_offset += column->width;
11386     }
11387
11388   gdk_draw_rectangle (drawable,
11389                       widget->style->black_gc,
11390                       FALSE,
11391                       0, 0,
11392                       bin_window_width + 1,
11393                       background_area.height + 1);
11394
11395   return drawable;
11396 }
11397
11398
11399 /**
11400  * gtk_tree_view_set_destroy_count_func:
11401  * @tree_view: A #GtkTreeView
11402  * @func: Function to be called when a view row is destroyed, or %NULL
11403  * @data: User data to be passed to @func, or %NULL
11404  * @destroy: Destroy notifier for @data, or %NULL
11405  *
11406  * This function should almost never be used.  It is meant for private use by
11407  * ATK for determining the number of visible children that are removed when the
11408  * user collapses a row, or a row is deleted.
11409  **/
11410 void
11411 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
11412                                       GtkTreeDestroyCountFunc  func,
11413                                       gpointer                 data,
11414                                       GtkDestroyNotify         destroy)
11415 {
11416   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11417
11418   if (tree_view->priv->destroy_count_destroy)
11419     (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
11420
11421   tree_view->priv->destroy_count_func = func;
11422   tree_view->priv->destroy_count_data = data;
11423   tree_view->priv->destroy_count_destroy = destroy;
11424 }
11425
11426
11427 /*
11428  * Interactive search
11429  */
11430
11431 /**
11432  * gtk_tree_view_set_enable_search:
11433  * @tree_view: A #GtkTreeView
11434  * @enable_search: %TRUE, if the user can search interactively
11435  *
11436  * If @enable_search is set, then the user can type in text to search through
11437  * the tree interactively.
11438  */
11439 void
11440 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
11441                                  gboolean     enable_search)
11442 {
11443   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11444
11445   enable_search = !!enable_search;
11446
11447   if (tree_view->priv->enable_search != enable_search)
11448     {
11449        tree_view->priv->enable_search = enable_search;
11450        g_object_notify (G_OBJECT (tree_view), "enable_search");
11451     }
11452 }
11453
11454 /**
11455  * gtk_tree_view_get_enable_search:
11456  * @tree_view: A #GtkTreeView
11457  *
11458  * Returns whether or not the tree allows interactive searching.
11459  *
11460  * Return value: whether or not to let the user search interactively
11461  */
11462 gboolean
11463 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
11464 {
11465   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11466
11467   return tree_view->priv->enable_search;
11468 }
11469
11470
11471 /**
11472  * gtk_tree_view_get_search_column:
11473  * @tree_view: A #GtkTreeView
11474  *
11475  * Gets the column searched on by the interactive search code.
11476  *
11477  * Return value: the column the interactive search code searches in.
11478  */
11479 gint
11480 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
11481 {
11482   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
11483
11484   return (tree_view->priv->search_column);
11485 }
11486
11487 /**
11488  * gtk_tree_view_set_search_column:
11489  * @tree_view: A #GtkTreeView
11490  * @column: the column of the model to search in
11491  *
11492  * Sets @column as the column where the interactive search code should
11493  * search in.  Additionally, turns on interactive searching. Note that
11494  * @column refers to a column of the model.
11495  */
11496 void
11497 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
11498                                  gint         column)
11499 {
11500   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11501   g_return_if_fail (column >= 0);
11502
11503   if (tree_view->priv->search_column == column)
11504     return;
11505
11506   tree_view->priv->search_column = column;
11507   g_object_notify (G_OBJECT (tree_view), "search_column");
11508 }
11509
11510 /**
11511  * gtk_tree_view_get_search_equal_func:
11512  * @tree_view: A #GtkTreeView
11513  *
11514  * Returns the compare function currently in use.
11515  *
11516  * Return value: the currently used compare function for the search code.
11517  */
11518
11519 GtkTreeViewSearchEqualFunc
11520 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
11521 {
11522   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11523
11524   return tree_view->priv->search_equal_func;
11525 }
11526
11527 /**
11528  * gtk_tree_view_set_search_equal_func:
11529  * @tree_view: A #GtkTreeView
11530  * @search_equal_func: the compare function to use during the search
11531  * @search_user_data: user data to pass to @search_equal_func, or %NULL
11532  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
11533  *
11534  * Sets the compare function for the interactive search capabilities; note
11535  * that somewhat like strcmp() returning 0 for equality
11536  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
11537  **/
11538 void
11539 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
11540                                      GtkTreeViewSearchEqualFunc  search_equal_func,
11541                                      gpointer                    search_user_data,
11542                                      GtkDestroyNotify            search_destroy)
11543 {
11544   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11545   g_return_if_fail (search_equal_func !=NULL);
11546
11547   if (tree_view->priv->search_destroy)
11548     (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
11549
11550   tree_view->priv->search_equal_func = search_equal_func;
11551   tree_view->priv->search_user_data = search_user_data;
11552   tree_view->priv->search_destroy = search_destroy;
11553   if (tree_view->priv->search_equal_func == NULL)
11554     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
11555 }
11556
11557 static void
11558 gtk_tree_view_search_dialog_destroy (GtkWidget   *search_dialog,
11559                                      GtkTreeView *tree_view)
11560 {
11561   GList *list;
11562   GtkEntry *entry;
11563   gint *selected_iter;
11564
11565   list = gtk_container_get_children (GTK_CONTAINER (search_dialog));
11566   entry = (GtkEntry *)list->data;
11567   g_list_free (list);
11568
11569   if (tree_view->priv->disable_popdown)
11570     return;
11571
11572   if (entry)
11573     {
11574       /* send focus-in event */
11575       send_focus_change (GTK_WIDGET (entry), FALSE);
11576     }
11577
11578   /* remove data from tree_view */
11579   g_object_set_data (G_OBJECT (tree_view), GTK_TREE_VIEW_SEARCH_DIALOG_KEY,
11580                      NULL);
11581
11582   selected_iter = g_object_get_data (G_OBJECT (search_dialog),
11583                                      "gtk-tree-view-selected-iter");
11584   if (selected_iter)
11585     g_free (selected_iter);
11586   g_object_set_data (G_OBJECT (search_dialog), "gtk-tree-view-selected-iter",
11587                      NULL);
11588
11589   gtk_widget_destroy (search_dialog);
11590 }
11591
11592 static void
11593 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
11594                                     GtkWidget   *search_dialog)
11595 {
11596   gint x, y;
11597   gint tree_x, tree_y;
11598   gint tree_width, tree_height;
11599   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
11600   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
11601   GtkRequisition requisition;
11602
11603   gtk_widget_realize (search_dialog);
11604
11605   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
11606   gdk_drawable_get_size (tree_window,
11607                          &tree_width,
11608                          &tree_height);
11609   gtk_widget_size_request (search_dialog, &requisition);
11610
11611   if (tree_x + tree_width - requisition.width > gdk_screen_get_width (screen))
11612     x = gdk_screen_get_width (screen) - requisition.width;
11613   else if (tree_x + tree_width - requisition.width < 0)
11614     x = 0;
11615   else
11616     x = tree_x + tree_width - requisition.width;
11617
11618   if (tree_y + tree_height > gdk_screen_get_height (screen))
11619     y = gdk_screen_get_height (screen) - requisition.height;
11620   else if (tree_y + tree_height < 0) /* isn't really possible ... */
11621     y = 0;
11622   else
11623     y = tree_y + tree_height;
11624
11625   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
11626 }
11627
11628 static void
11629 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
11630                                       GtkMenu  *menu,
11631                                       gpointer  data)
11632 {
11633   GtkTreeView *tree_view = (GtkTreeView *)data;
11634
11635   tree_view->priv->disable_popdown = 1;
11636   g_signal_connect (menu, "hide",
11637                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
11638 }
11639
11640 static gboolean
11641 gtk_tree_view_real_search_enable_popdown (gpointer data)
11642 {
11643   GtkTreeView *tree_view = (GtkTreeView *)data;
11644
11645   GDK_THREADS_ENTER ();
11646
11647   tree_view->priv->disable_popdown = 0;
11648
11649   GDK_THREADS_LEAVE ();
11650
11651   return FALSE;
11652 }
11653
11654 static void
11655 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
11656                                      gpointer   data)
11657 {
11658   g_timeout_add (200, gtk_tree_view_real_search_enable_popdown, data);
11659 }
11660
11661 static gboolean
11662 gtk_tree_view_search_delete_event (GtkWidget *widget,
11663                                    GdkEventAny *event,
11664                                    GtkTreeView *tree_view)
11665 {
11666   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
11667
11668   gtk_tree_view_search_dialog_destroy (widget, tree_view);
11669
11670   return TRUE;
11671 }
11672
11673 static gboolean
11674 gtk_tree_view_search_button_press_event (GtkWidget *widget,
11675                                          GdkEventButton *event,
11676                                          GtkTreeView *tree_view)
11677 {
11678   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
11679
11680   gtk_tree_view_search_dialog_destroy (widget, tree_view);
11681
11682   return TRUE;
11683 }
11684
11685 static gboolean
11686 gtk_tree_view_search_key_press_event (GtkWidget *widget,
11687                                       GdkEventKey *event,
11688                                       GtkTreeView *tree_view)
11689 {
11690   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
11691   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11692
11693   /* close window */
11694   if (event->keyval == GDK_Escape ||
11695       event->keyval == GDK_Return ||
11696       event->keyval == GDK_Tab)
11697     {
11698       gtk_tree_view_search_dialog_destroy (widget, tree_view);
11699       return TRUE;
11700     }
11701
11702   /* select previous matching iter */
11703   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
11704     {
11705       gtk_tree_view_search_move (widget, tree_view, TRUE);
11706       return TRUE;
11707     }
11708
11709   /* select next matching iter */
11710   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
11711     {
11712       gtk_tree_view_search_move (widget, tree_view, FALSE);
11713       return TRUE;
11714     }
11715
11716   return FALSE;
11717 }
11718
11719 static void
11720 gtk_tree_view_search_move (GtkWidget   *window,
11721                            GtkTreeView *tree_view,
11722                            gboolean     up)
11723 {
11724   gboolean ret;
11725   gint *selected_iter;
11726   gint len;
11727   gint count = 0;
11728   gchar *text;
11729   GtkTreeIter iter;
11730   GtkTreeModel *model;
11731   GtkTreeSelection *selection;
11732
11733   text = g_object_get_data (G_OBJECT (window), "gtk-tree-view-text");
11734   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
11735
11736   g_return_if_fail (text != NULL);
11737
11738   if (!selected_iter || (up && *selected_iter == 1))
11739     return;
11740
11741   len = strlen (text);
11742
11743   if (len < 1)
11744     return;
11745
11746   model = gtk_tree_view_get_model (tree_view);
11747   selection = gtk_tree_view_get_selection (tree_view);
11748
11749   /* search */
11750   gtk_tree_selection_unselect_all (selection);
11751   gtk_tree_model_get_iter_first (model, &iter);
11752
11753   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
11754                                    &count, up?((*selected_iter) - 1):((*selected_iter + 1)));
11755
11756   if (ret)
11757     {
11758       /* found */
11759       *selected_iter += up?(-1):(1);
11760     }
11761   else
11762     {
11763       /* return to old iter */
11764       count = 0;
11765       gtk_tree_model_get_iter_first (model, &iter);
11766       gtk_tree_view_search_iter (model, selection,
11767                                  &iter, text,
11768                                  &count, *selected_iter);
11769     }
11770 }
11771
11772 static gboolean
11773 gtk_tree_view_search_equal_func (GtkTreeModel *model,
11774                                  gint          column,
11775                                  const gchar  *key,
11776                                  GtkTreeIter  *iter,
11777                                  gpointer      search_data)
11778 {
11779   gboolean retval = TRUE;
11780   const gchar *str;
11781   gchar *normalized_string;
11782   gchar *normalized_key;
11783   gchar *case_normalized_string = NULL;
11784   gchar *case_normalized_key = NULL;
11785   GValue value = {0,};
11786   GValue transformed = {0,};
11787
11788   gtk_tree_model_get_value (model, iter, column, &value);
11789
11790   g_value_init (&transformed, G_TYPE_STRING);
11791
11792   if (!g_value_transform (&value, &transformed))
11793     {
11794       g_value_unset (&value);
11795       return TRUE;
11796     }
11797
11798   g_value_unset (&value);
11799
11800   str = g_value_get_string (&transformed);
11801   if (!str)
11802     {
11803       g_value_unset (&transformed);
11804       return TRUE;
11805     }
11806
11807   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
11808   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
11809
11810   if (normalized_string && normalized_key)
11811     {
11812       case_normalized_string = g_utf8_casefold (normalized_string, -1);
11813       case_normalized_key = g_utf8_casefold (normalized_key, -1);
11814
11815       if (strstr (case_normalized_string, case_normalized_key))
11816         retval = FALSE;
11817     }
11818
11819   g_value_unset (&transformed);
11820   g_free (normalized_key);
11821   g_free (normalized_string);
11822   g_free (case_normalized_key);
11823   g_free (case_normalized_string);
11824
11825   return retval;
11826 }
11827
11828 static gboolean
11829 gtk_tree_view_search_iter (GtkTreeModel     *model,
11830                            GtkTreeSelection *selection,
11831                            GtkTreeIter      *iter,
11832                            const gchar      *text,
11833                            gint             *count,
11834                            gint              n)
11835 {
11836   GtkRBTree *tree = NULL;
11837   GtkRBNode *node = NULL;
11838   GtkTreePath *path;
11839
11840   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
11841
11842   path = gtk_tree_model_get_path (model, iter);
11843   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11844
11845   do
11846     {
11847       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
11848         {
11849           (*count)++;
11850           if (*count == n)
11851             {
11852               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
11853                                             TRUE, 0.5, 0.0);
11854               gtk_tree_selection_select_iter (selection, iter);
11855               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
11856
11857               if (path)
11858                 gtk_tree_path_free (path);
11859
11860               return TRUE;
11861             }
11862         }
11863
11864       if (node->children)
11865         {
11866           gboolean has_child;
11867           GtkTreeIter tmp;
11868
11869           tree = node->children;
11870           node = tree->root;
11871
11872           while (node->left != tree->nil)
11873             node = node->left;
11874
11875           tmp = *iter;
11876           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
11877           gtk_tree_path_down (path);
11878
11879           /* sanity check */
11880           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
11881         }
11882       else
11883         {
11884           gboolean done = FALSE;
11885
11886           do
11887             {
11888               node = _gtk_rbtree_next (tree, node);
11889
11890               if (node)
11891                 {
11892                   gboolean has_next;
11893
11894                   has_next = gtk_tree_model_iter_next (model, iter);
11895
11896                   done = TRUE;
11897                   gtk_tree_path_next (path);
11898
11899                   /* sanity check */
11900                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
11901                 }
11902               else
11903                 {
11904                   gboolean has_parent;
11905                   GtkTreeIter tmp_iter = *iter;
11906
11907                   node = tree->parent_node;
11908                   tree = tree->parent_tree;
11909
11910                   if (!tree)
11911                     {
11912                       if (path)
11913                         gtk_tree_path_free (path);
11914
11915                       /* we've run out of tree, done with this func */
11916                       return FALSE;
11917                     }
11918
11919                   has_parent = gtk_tree_model_iter_parent (model,
11920                                                            iter,
11921                                                            &tmp_iter);
11922                   gtk_tree_path_up (path);
11923
11924                   /* sanity check */
11925                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
11926                 }
11927             }
11928           while (!done);
11929         }
11930     }
11931   while (1);
11932
11933   return FALSE;
11934 }
11935
11936 static void
11937 gtk_tree_view_search_init (GtkWidget   *entry,
11938                            GtkTreeView *tree_view)
11939 {
11940   gint ret;
11941   gint *selected_iter;
11942   gint len;
11943   gint count = 0;
11944   const gchar *text;
11945   GtkWidget *window;
11946   GtkTreeIter iter;
11947   GtkTreeModel *model;
11948   GtkTreeSelection *selection;
11949
11950   g_return_if_fail (GTK_IS_ENTRY (entry));
11951   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11952
11953   window = gtk_widget_get_parent (entry);
11954   text = gtk_entry_get_text (GTK_ENTRY (entry));
11955   len = strlen (text);
11956   model = gtk_tree_view_get_model (tree_view);
11957   selection = gtk_tree_view_get_selection (tree_view);
11958
11959   /* search */
11960   gtk_tree_selection_unselect_all (selection);
11961   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
11962   if (selected_iter)
11963     g_free (selected_iter);
11964   g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter", NULL);
11965
11966   if (len < 1)
11967     return;
11968
11969   gtk_tree_model_get_iter_first (model, &iter);
11970
11971   ret = gtk_tree_view_search_iter (model, selection,
11972                                    &iter, text,
11973                                    &count, 1);
11974
11975   if (ret)
11976     {
11977       selected_iter = g_malloc (sizeof (int));
11978       *selected_iter = 1;
11979       g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter",
11980                          selected_iter);
11981     }
11982 }
11983
11984 static void
11985 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
11986                              GtkTreeView     *tree_view)
11987 {
11988   if (tree_view->priv->edited_column == NULL)
11989     return;
11990
11991   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
11992   tree_view->priv->edited_column = NULL;
11993
11994   if (GTK_WIDGET_HAS_FOCUS (cell_editable))
11995     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
11996
11997   gtk_container_remove (GTK_CONTAINER (tree_view),
11998                         GTK_WIDGET (cell_editable));
11999 }
12000
12001 static gboolean
12002 gtk_tree_view_start_editing (GtkTreeView *tree_view,
12003                              GtkTreePath *cursor_path)
12004 {
12005   GtkTreeIter iter;
12006   GdkRectangle background_area;
12007   GdkRectangle cell_area;
12008   GtkCellEditable *editable_widget = NULL;
12009   gchar *path_string;
12010   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
12011   gint retval = FALSE;
12012   GtkRBTree *cursor_tree;
12013   GtkRBNode *cursor_node;
12014
12015   g_assert (tree_view->priv->focus_column);
12016
12017   if (! GTK_WIDGET_REALIZED (tree_view))
12018     return FALSE;
12019
12020   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
12021       cursor_node == NULL)
12022     return FALSE;
12023
12024   path_string = gtk_tree_path_to_string (cursor_path);
12025   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
12026
12027   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
12028
12029   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
12030                                            tree_view->priv->model,
12031                                            &iter,
12032                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
12033                                            cursor_node->children?TRUE:FALSE);
12034   gtk_tree_view_get_background_area (tree_view,
12035                                      cursor_path,
12036                                      tree_view->priv->focus_column,
12037                                      &background_area);
12038   gtk_tree_view_get_cell_area (tree_view,
12039                                cursor_path,
12040                                tree_view->priv->focus_column,
12041                                &cell_area);
12042
12043   if (gtk_tree_view_is_expander_column (tree_view, tree_view->priv->focus_column) && TREE_VIEW_DRAW_EXPANDERS (tree_view))
12044     {
12045       cell_area.x += tree_view->priv->expander_size;
12046       cell_area.width -= tree_view->priv->expander_size;
12047     }
12048
12049   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
12050                                         &editable_widget,
12051                                         NULL,
12052                                         path_string,
12053                                         &background_area,
12054                                         &cell_area,
12055                                         flags))
12056     {
12057       retval = TRUE;
12058       if (editable_widget != NULL)
12059         {
12060           gint left, right;
12061           GdkRectangle area;
12062           GtkCellRenderer *cell;
12063
12064           area = cell_area;
12065           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
12066           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
12067
12068           area.x += left;
12069           area.width -= right + left;
12070
12071           gtk_tree_view_real_start_editing (tree_view,
12072                                             tree_view->priv->focus_column,
12073                                             cursor_path,
12074                                             editable_widget,
12075                                             &area,
12076                                             NULL,
12077                                             flags);
12078         }
12079
12080     }
12081   g_free (path_string);
12082   return retval;
12083 }
12084
12085 static void
12086 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
12087                                   GtkTreeViewColumn *column,
12088                                   GtkTreePath       *path,
12089                                   GtkCellEditable   *cell_editable,
12090                                   GdkRectangle      *cell_area,
12091                                   GdkEvent          *event,
12092                                   guint              flags)
12093 {
12094   gint pre_val = tree_view->priv->vadjustment->value;
12095
12096   tree_view->priv->edited_column = column;
12097   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
12098
12099   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
12100
12101   cell_area->y += pre_val - tree_view->priv->vadjustment->value;
12102
12103   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
12104   gtk_tree_view_put (tree_view,
12105                      GTK_WIDGET (cell_editable),
12106                      cell_area->x, cell_area->y, cell_area->width, cell_area->height);
12107   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
12108                                    (GdkEvent *)event);
12109   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
12110   g_signal_connect (cell_editable, "remove_widget",
12111                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
12112 }
12113
12114 static void
12115 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
12116                             gboolean     cancel_editing)
12117 {
12118   GtkTreeViewColumn *column;
12119
12120   if (tree_view->priv->edited_column == NULL)
12121     return;
12122
12123   /*
12124    * This is very evil. We need to do this, because
12125    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
12126    * later on. If gtk_tree_view_row_changed notices
12127    * tree_view->priv->edited_column != NULL, it'll call
12128    * gtk_tree_view_stop_editing again. Bad things will happen then.
12129    *
12130    * Please read that again if you intend to modify anything here.
12131    */
12132
12133   column = tree_view->priv->edited_column;
12134   tree_view->priv->edited_column = NULL;
12135
12136   if (! cancel_editing)
12137     gtk_cell_editable_editing_done (column->editable_widget);
12138
12139   tree_view->priv->edited_column = column;
12140
12141   gtk_cell_editable_remove_widget (column->editable_widget);
12142 }