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 <string.h>
  22 #include <gdk/gdkkeysyms.h>
  23
  24 #include "gtktreeview.h"
  25 #include "gtkrbtree.h"
  26 #include "gtktreednd.h"
  27 #include "gtktreeprivate.h"
  28 #include "gtkcellrenderer.h"
  29 #include "gtkmain.h"
  30 #include "gtkmarshalers.h"
  31 #include "gtkbutton.h"
  32 #include "gtkalignment.h"
  33 #include "gtklabel.h"
  34 #include "gtkhbox.h"
  35 #include "gtkarrow.h"
  36 #include "gtkintl.h"
  37 #include "gtkbindings.h"
  38 #include "gtkcontainer.h"
  39 #include "gtkentry.h"
  40 #include "gtktreemodelsort.h"
  41
  42 #define GTK_TREE_VIEW_SEARCH_DIALOG_KEY "gtk-tree-view-search-dialog"
  43 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  44 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  45 #define GTK_TREE_VIEW_NUM_ROWS_PER_IDLE 500
  46 #define SCROLL_EDGE_SIZE 15
  47 #define EXPANDER_EXTRA_PADDING 4
  48
  49 /* The "background" areas of all rows/cells add up to cover the entire tree.
  50  * The background includes all inter-row and inter-cell spacing.
  51  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  52  * i.e. just the cells, no spacing.
  53  */
  54
  55 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  56 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  57
  58 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  59 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  60
  61 /* This is in Window coordinates */
  62 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  63 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  64
  65
  66 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  67 struct _GtkTreeViewChild
  68 {
  69   GtkWidget *widget;
  70   gint x;
  71   gint y;
  72   gint width;
  73   gint height;
  74 };
  75
  76
  77 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  78 struct _TreeViewDragInfo
  79 {
  80   GdkModifierType start_button_mask;
  81   GtkTargetList *source_target_list;
  82   GdkDragAction source_actions;
  83
  84   GtkTargetList *dest_target_list;
  85
  86   guint source_set : 1;
  87   guint dest_set : 1;
  88 };
  89
  90
  91 /* Signals */
  92 enum
  93 {
  94   ROW_ACTIVATED,
  95   TEST_EXPAND_ROW,
  96   TEST_COLLAPSE_ROW,
  97   ROW_EXPANDED,
  98   ROW_COLLAPSED,
  99   COLUMNS_CHANGED,
 100   CURSOR_CHANGED,
 101   MOVE_CURSOR,
 102   SELECT_ALL,
 103   UNSELECT_ALL,
 104   SELECT_CURSOR_ROW,
 105   TOGGLE_CURSOR_ROW,
 106   EXPAND_COLLAPSE_CURSOR_ROW,
 107   SELECT_CURSOR_PARENT,
 108   START_INTERACTIVE_SEARCH,
 109   LAST_SIGNAL
 110 };
 111
 112 /* Properties */
 113 enum {
 114   PROP_0,
 115   PROP_MODEL,
 116   PROP_HADJUSTMENT,
 117   PROP_VADJUSTMENT,
 118   PROP_HEADERS_VISIBLE,
 119   PROP_HEADERS_CLICKABLE,
 120   PROP_EXPANDER_COLUMN,
 121   PROP_REORDERABLE,
 122   PROP_RULES_HINT,
 123   PROP_ENABLE_SEARCH,
 124   PROP_SEARCH_COLUMN
 125 };
 126
 127 static void     gtk_tree_view_class_init           (GtkTreeViewClass *klass);
 128 static void     gtk_tree_view_init                 (GtkTreeView      *tree_view);
 129
 130 /* object signals */
 131 static void     gtk_tree_view_finalize             (GObject          *object);
 132 static void     gtk_tree_view_set_property         (GObject         *object,
 133                                                     guint            prop_id,
 134                                                     const GValue    *value,
 135                                                     GParamSpec      *pspec);
 136 static void     gtk_tree_view_get_property         (GObject         *object,
 137                                                     guint            prop_id,
 138                                                     GValue          *value,
 139                                                     GParamSpec      *pspec);
 140
 141 /* gtkobject signals */
 142 static void     gtk_tree_view_destroy              (GtkObject        *object);
 143
 144 /* gtkwidget signals */
 145 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 146 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 147 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 148 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 149                                                     GtkRequisition   *requisition);
 150 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 151                                                     GtkAllocation    *allocation);
 152 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 153                                                     GdkEventExpose   *event);
 154 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 155                                                     GdkEventKey      *event);
 156 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 157                                                     GdkEventMotion   *event);
 158 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 159                                                     GdkEventCrossing *event);
 160 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 161                                                     GdkEventCrossing *event);
 162 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 163                                                     GdkEventButton   *event);
 164 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 165                                                     GdkEventButton   *event);
 166 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 167                                                     GtkWidget        *child);
 168 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 169                                                     GdkEventFocus    *event);
 170 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 171                                                     GtkDirectionType  direction);
 172 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 173 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 174                                                     GtkStyle         *previous_style);
 175
 176 /* container signals */
 177 static void     gtk_tree_view_remove               (GtkContainer     *container,
 178                                                     GtkWidget        *widget);
 179 static void     gtk_tree_view_forall               (GtkContainer     *container,
 180                                                     gboolean          include_internals,
 181                                                     GtkCallback       callback,
 182                                                     gpointer          callback_data);
 183
 184 /* Source side drag signals */
 185 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 186                                             GdkDragContext   *context);
 187 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 188                                             GdkDragContext   *context);
 189 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 190                                             GdkDragContext   *context,
 191                                             GtkSelectionData *selection_data,
 192                                             guint             info,
 193                                             guint             time);
 194 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 195                                             GdkDragContext   *context);
 196
 197 /* Target side drag signals */
 198 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 199                                                   GdkDragContext   *context,
 200                                                   guint             time);
 201 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 202                                                   GdkDragContext   *context,
 203                                                   gint              x,
 204                                                   gint              y,
 205                                                   guint             time);
 206 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 207                                                   GdkDragContext   *context,
 208                                                   gint              x,
 209                                                   gint              y,
 210                                                   guint             time);
 211 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 212                                                   GdkDragContext   *context,
 213                                                   gint              x,
 214                                                   gint              y,
 215                                                   GtkSelectionData *selection_data,
 216                                                   guint             info,
 217                                                   guint             time);
 218
 219 /* tree_model signals */
 220 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 221                                                            GtkAdjustment   *hadj,
 222                                                            GtkAdjustment   *vadj);
 223 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 224                                                            GtkMovementStep  step,
 225                                                            gint             count);
 226 static void gtk_tree_view_real_select_all                 (GtkTreeView     *tree_view);
 227 static void gtk_tree_view_real_unselect_all               (GtkTreeView     *tree_view);
 228 static void gtk_tree_view_real_select_cursor_row          (GtkTreeView     *tree_view,
 229                                                            gboolean         start_editing);
 230 static void gtk_tree_view_real_toggle_cursor_row          (GtkTreeView     *tree_view);
 231 static void gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 232                                                            gboolean         logical,
 233                                                            gboolean         expand,
 234                                                            gboolean         open_all);
 235 static void gtk_tree_view_real_select_cursor_parent       (GtkTreeView     *tree_view);
 236 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 237                                                            GtkTreePath     *path,
 238                                                            GtkTreeIter     *iter,
 239                                                            gpointer         data);
 240 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 241                                                            GtkTreePath     *path,
 242                                                            GtkTreeIter     *iter,
 243                                                            gpointer         data);
 244 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 245                                                            GtkTreePath     *path,
 246                                                            GtkTreeIter     *iter,
 247                                                            gpointer         data);
 248 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 249                                                            GtkTreePath     *path,
 250                                                            gpointer         data);
 251 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 252                                                            GtkTreePath     *parent,
 253                                                            GtkTreeIter     *iter,
 254                                                            gint            *new_order,
 255                                                            gpointer         data);
 256
 257 /* Incremental reflow */
 258 static gboolean validate_row             (GtkTreeView *tree_view,
 259                                           GtkRBTree   *tree,
 260                                           GtkRBNode   *node,
 261                                           GtkTreeIter *iter,
 262                                           GtkTreePath *path);
 263 static void     validate_visible_area    (GtkTreeView *tree_view);
 264 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 265 static gboolean validate_rows            (GtkTreeView *tree_view);
 266 static gboolean presize_handler_callback (gpointer     data);
 267 static void     install_presize_handler  (GtkTreeView *tree_view);
 268 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 269 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 270 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 271
 272
 273 /* Internal functions */
 274 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView       *tree_view,
 275                                                               GtkTreeViewColumn *column);
 276 static void     gtk_tree_view_add_move_binding               (GtkBindingSet     *binding_set,
 277                                                               guint              keyval,
 278                                                               guint              modmask,
 279                                                               GtkMovementStep    step,
 280                                                               gint               count);
 281 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView       *tree_view,
 282                                                               GtkRBTree         *tree);
 283 static void     gtk_tree_view_queue_draw_path                (GtkTreeView       *tree_view,
 284                                                               GtkTreePath       *path,
 285                                                               GdkRectangle      *clip_rect);
 286 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView       *tree_view,
 287                                                               GtkRBTree         *tree,
 288                                                               GtkRBNode         *node,
 289                                                               GdkRectangle      *clip_rect);
 290 static void     gtk_tree_view_draw_arrow                     (GtkTreeView       *tree_view,
 291                                                               GtkRBTree         *tree,
 292                                                               GtkRBNode         *node,
 293                                                               gint               x,
 294                                                               gint               y);
 295 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView       *tree_view,
 296                                                               GtkRBTree         *tree,
 297                                                               gint              *x1,
 298                                                               gint              *x2);
 299 static gint     gtk_tree_view_new_column_width               (GtkTreeView       *tree_view,
 300                                                               gint               i,
 301                                                               gint              *x);
 302 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment     *adjustment,
 303                                                               GtkTreeView       *tree_view);
 304 static void     gtk_tree_view_build_tree                     (GtkTreeView       *tree_view,
 305                                                               GtkRBTree         *tree,
 306                                                               GtkTreeIter       *iter,
 307                                                               gint               depth,
 308                                                               gboolean           recurse);
 309 static gboolean gtk_tree_view_discover_dirty_iter            (GtkTreeView       *tree_view,
 310                                                               GtkTreeIter       *iter,
 311                                                               gint               depth,
 312                                                               gint              *height,
 313                                                               GtkRBNode         *node);
 314 static void     gtk_tree_view_discover_dirty                 (GtkTreeView       *tree_view,
 315                                                               GtkRBTree         *tree,
 316                                                               GtkTreeIter       *iter,
 317                                                               gint               depth);
 318 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView       *tree_view,
 319                                                               GtkRBTree         *tree,
 320                                                               GtkRBNode         *node);
 321 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView       *tree_view,
 322                                                               GtkTreeViewColumn *column);
 323 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView       *tree_view,
 324                                                               GdkEventMotion    *event);
 325 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView       *tree_view);
 326 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView       *tree_view,
 327                                                               gint               count);
 328 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView       *tree_view,
 329                                                               gint               count);
 330 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView       *tree_view,
 331                                                               gint               count);
 332 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView       *tree_view,
 333                                                               gint               count);
 334 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView       *tree_view,
 335                                                               GtkTreePath       *path,
 336                                                               GtkRBTree         *tree,
 337                                                               GtkRBNode         *node,
 338                                                               gboolean           animate);
 339 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView       *tree_view,
 340                                                               GtkTreePath       *path,
 341                                                               GtkRBTree         *tree,
 342                                                               GtkRBNode         *node,
 343                                                               gboolean           open_all,
 344                                                               gboolean           animate);
 345 static void     gtk_tree_view_real_set_cursor                (GtkTreeView       *tree_view,
 346                                                               GtkTreePath       *path,
 347                                                               gboolean           clear_and_select,
 348                                                               gboolean           clamp_node);
 349 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView       *tree_view);
 350
 351 /* interactive search */
 352 static void     gtk_tree_view_search_dialog_destroy     (GtkWidget        *search_dialog,
 353                                                          GtkTreeView      *tree_view);
 354 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 355                                                          GtkWidget        *search_dialog);
 356 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 357                                                          GtkMenu          *menu,
 358                                                          gpointer          data);
 359 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 360 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 361                                                          gpointer          data);
 362 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 363                                                          GdkEventAny      *event,
 364                                                          GtkTreeView      *tree_view);
 365 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 366                                                          GdkEventButton   *event,
 367                                                          GtkTreeView      *tree_view);
 368 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 369                                                          GdkEventKey      *event,
 370                                                          GtkTreeView      *tree_view);
 371 static void     gtk_tree_view_search_move               (GtkWidget        *window,
 372                                                          GtkTreeView      *tree_view,
 373                                                          gboolean          up);
 374 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 375                                                          gint              column,
 376                                                          const gchar      *key,
 377                                                          GtkTreeIter      *iter,
 378                                                          gpointer          search_data);
 379 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 380                                                          GtkTreeSelection *selection,
 381                                                          GtkTreeIter      *iter,
 382                                                          const gchar      *text,
 383                                                          gint             *count,
 384                                                          gint              n);
 385 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 386                                                          GtkTreeView      *tree_view);
 387 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 388                                                          GtkWidget        *child_widget,
 389                                                          gint              x,
 390                                                          gint              y,
 391                                                          gint              width,
 392                                                          gint              height);
 393 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 394                                                          GtkTreePath      *cursor_path);
 395 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 396                                               GtkTreeViewColumn *column,
 397                                               GtkTreePath       *path,
 398                                               GtkCellEditable   *cell_editable,
 399                                               GdkRectangle      *cell_area,
 400                                               GdkEvent          *event,
 401                                               guint              flags);
 402 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 403                                                          gboolean     cancel_editing);
 404 static void gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view);
 405 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 406                                                          GtkTreeViewColumn *column,
 407                                                          gint               drop_position);
 408
 409
 410 static GtkContainerClass *parent_class = NULL;
 411 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 412
 413 \f
 414
 415 /* GType Methods
 416  */
 417
 418 GType
 419 gtk_tree_view_get_type (void)
 420 {
 421   static GType tree_view_type = 0;
 422
 423   if (!tree_view_type)
 424     {
 425       static const GTypeInfo tree_view_info =
 426       {
 427         sizeof (GtkTreeViewClass),
 428         NULL,           /* base_init */
 429         NULL,           /* base_finalize */
 430         (GClassInitFunc) gtk_tree_view_class_init,
 431         NULL,           /* class_finalize */
 432         NULL,           /* class_data */
 433         sizeof (GtkTreeView),
 434         0,              /* n_preallocs */
 435         (GInstanceInitFunc) gtk_tree_view_init
 436       };
 437
 438       tree_view_type =
 439         g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView",
 440                                 &tree_view_info, 0);
 441     }
 442
 443   return tree_view_type;
 444 }
 445
 446 static void
 447 gtk_tree_view_class_init (GtkTreeViewClass *class)
 448 {
 449   GObjectClass *o_class;
 450   GtkObjectClass *object_class;
 451   GtkWidgetClass *widget_class;
 452   GtkContainerClass *container_class;
 453   GtkBindingSet *binding_set;
 454
 455   parent_class = g_type_class_peek_parent (class);
 456   binding_set = gtk_binding_set_by_class (class);
 457
 458   o_class = (GObjectClass *) class;
 459   object_class = (GtkObjectClass *) class;
 460   widget_class = (GtkWidgetClass *) class;
 461   container_class = (GtkContainerClass *) class;
 462
 463   /* GObject signals */
 464   o_class->set_property = gtk_tree_view_set_property;
 465   o_class->get_property = gtk_tree_view_get_property;
 466   o_class->finalize = gtk_tree_view_finalize;
 467
 468   /* GtkObject signals */
 469   object_class->destroy = gtk_tree_view_destroy;
 470
 471   /* GtkWidget signals */
 472   widget_class->map = gtk_tree_view_map;
 473   widget_class->realize = gtk_tree_view_realize;
 474   widget_class->unrealize = gtk_tree_view_unrealize;
 475   widget_class->size_request = gtk_tree_view_size_request;
 476   widget_class->size_allocate = gtk_tree_view_size_allocate;
 477   widget_class->button_press_event = gtk_tree_view_button_press;
 478   widget_class->button_release_event = gtk_tree_view_button_release;
 479   widget_class->motion_notify_event = gtk_tree_view_motion;
 480   widget_class->expose_event = gtk_tree_view_expose;
 481   widget_class->key_press_event = gtk_tree_view_key_press;
 482   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 483   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 484   widget_class->focus_out_event = gtk_tree_view_focus_out;
 485   widget_class->drag_begin = gtk_tree_view_drag_begin;
 486   widget_class->drag_end = gtk_tree_view_drag_end;
 487   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 488   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 489   widget_class->drag_leave = gtk_tree_view_drag_leave;
 490   widget_class->drag_motion = gtk_tree_view_drag_motion;
 491   widget_class->drag_drop = gtk_tree_view_drag_drop;
 492   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 493   widget_class->focus = gtk_tree_view_focus;
 494   widget_class->grab_focus = gtk_tree_view_grab_focus;
 495   widget_class->style_set = gtk_tree_view_style_set;
 496
 497   /* GtkContainer signals */
 498   container_class->remove = gtk_tree_view_remove;
 499   container_class->forall = gtk_tree_view_forall;
 500   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 501
 502   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 503   class->move_cursor = gtk_tree_view_real_move_cursor;
 504   class->select_all = gtk_tree_view_real_select_all;
 505   class->unselect_all = gtk_tree_view_real_unselect_all;
 506   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 507   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 508   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 509   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 510   class->start_interactive_search = gtk_tree_view_real_start_interactive_search;
 511
 512   /* Properties */
 513
 514   g_object_class_install_property (o_class,
 515                                    PROP_MODEL,
 516                                    g_param_spec_object ("model",
 517                                                         _("TreeView Model"),
 518                                                         _("The model for the tree view"),
 519                                                         GTK_TYPE_TREE_MODEL,
 520                                                         G_PARAM_READWRITE));
 521
 522   g_object_class_install_property (o_class,
 523                                    PROP_HADJUSTMENT,
 524                                    g_param_spec_object ("hadjustment",
 525                                                         _("Horizontal Adjustment"),
 526                                                         _("Horizontal Adjustment for the widget"),
 527                                                         GTK_TYPE_ADJUSTMENT,
 528                                                         G_PARAM_READWRITE));
 529
 530   g_object_class_install_property (o_class,
 531                                    PROP_VADJUSTMENT,
 532                                    g_param_spec_object ("vadjustment",
 533                                                         _("Vertical Adjustment"),
 534                                                         _("Vertical Adjustment for the widget"),
 535                                                         GTK_TYPE_ADJUSTMENT,
 536                                                         G_PARAM_READWRITE));
 537
 538   g_object_class_install_property (o_class,
 539                                    PROP_HEADERS_VISIBLE,
 540                                    g_param_spec_boolean ("headers_visible",
 541                                                          _("Visible"),
 542                                                          _("Show the column header buttons"),
 543                                                          TRUE,
 544                                                          G_PARAM_READWRITE));
 545
 546   g_object_class_install_property (o_class,
 547                                    PROP_HEADERS_CLICKABLE,
 548                                    g_param_spec_boolean ("headers_clickable",
 549                                                          _("Headers Clickable"),
 550                                                          _("Column headers respond to click events"),
 551                                                          FALSE,
 552                                                          G_PARAM_WRITABLE));
 553
 554   g_object_class_install_property (o_class,
 555                                    PROP_EXPANDER_COLUMN,
 556                                    g_param_spec_object ("expander_column",
 557                                                         _("Expander Column"),
 558                                                         _("Set the column for the expander column"),
 559                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 560                                                         G_PARAM_READWRITE));
 561
 562   g_object_class_install_property (o_class,
 563                                    PROP_REORDERABLE,
 564                                    g_param_spec_boolean ("reorderable",
 565                                                          _("Reorderable"),
 566                                                          _("View is reorderable"),
 567                                                          FALSE,
 568                                                          G_PARAM_READWRITE));
 569
 570   g_object_class_install_property (o_class,
 571                                    PROP_RULES_HINT,
 572                                    g_param_spec_boolean ("rules_hint",
 573                                                          _("Rules Hint"),
 574                                                          _("Set a hint to the theme engine to draw rows in alternating colors"),
 575                                                          FALSE,
 576                                                          G_PARAM_READWRITE));
 577
 578     g_object_class_install_property (o_class,
 579                                      PROP_ENABLE_SEARCH,
 580                                      g_param_spec_boolean ("enable_search",
 581                                                            _("Enable Search"),
 582                                                            _("View allows user to search through columns interactively"),
 583                                                            TRUE,
 584                                                            G_PARAM_READWRITE));
 585
 586     g_object_class_install_property (o_class,
 587                                      PROP_SEARCH_COLUMN,
 588                                      g_param_spec_int ("search_column",
 589                                                        _("Search Column"),
 590                                                        _("Model column to search through when searching through code"),
 591                                                        -1,
 592                                                        G_MAXINT,
 593                                                        0,
 594                                                        G_PARAM_READWRITE));
 595
 596   /* Style properties */
 597 #define _TREE_VIEW_EXPANDER_SIZE 10
 598 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 599 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 600
 601   gtk_widget_class_install_style_property (widget_class,
 602                                            g_param_spec_int ("expander_size",
 603                                                              _("Expander Size"),
 604                                                              _("Size of the expander arrow"),
 605                                                              0,
 606                                                              G_MAXINT,
 607                                                              _TREE_VIEW_EXPANDER_SIZE,
 608                                                              G_PARAM_READABLE));
 609
 610   gtk_widget_class_install_style_property (widget_class,
 611                                            g_param_spec_int ("vertical_separator",
 612                                                              _("Vertical Separator Width"),
 613                                                              _("Vertical space between cells.  Must be an even number"),
 614                                                              0,
 615                                                              G_MAXINT,
 616                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 617                                                              G_PARAM_READABLE));
 618
 619   gtk_widget_class_install_style_property (widget_class,
 620                                            g_param_spec_int ("horizontal_separator",
 621                                                              _("Horizontal Separator Width"),
 622                                                              _("Horizontal space between cells.  Must be an even number"),
 623                                                              0,
 624                                                              G_MAXINT,
 625                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 626                                                              G_PARAM_READABLE));
 627
 628   gtk_widget_class_install_style_property (widget_class,
 629                                            g_param_spec_boolean ("allow_rules",
 630                                                                  _("Allow Rules"),
 631                                                                  _("Allow drawing of alternating color rows"),
 632                                                                  TRUE,
 633                                                                  G_PARAM_READABLE));
 634
 635   gtk_widget_class_install_style_property (widget_class,
 636                                            g_param_spec_boolean ("indent_expanders",
 637                                                                  _("Indent Expanders"),
 638                                                                  _("Make the expanders indented"),
 639                                                                  TRUE,
 640                                                                  G_PARAM_READABLE));
 641
 642   gtk_widget_class_install_style_property (widget_class,
 643                                            g_param_spec_boxed ("even_row_color",
 644                                                                _("Even Row Color"),
 645                                                                _("Color to use for even rows"),
 646                                                                GDK_TYPE_COLOR,
 647 G_PARAM_READABLE));
 648
 649   gtk_widget_class_install_style_property (widget_class,
 650                                            g_param_spec_boxed ("odd_row_color",
 651                                                                _("Odd Row Color"),
 652                                                                _("Color to use for odd rows"),
 653                                                                GDK_TYPE_COLOR,
 654 G_PARAM_READABLE));
 655
 656   /* Signals */
 657   widget_class->set_scroll_adjustments_signal =
 658     g_signal_new ("set_scroll_adjustments",
 659                   G_TYPE_FROM_CLASS (o_class),
 660                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 661                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 662                   NULL, NULL,
 663                   _gtk_marshal_VOID__OBJECT_OBJECT,
 664                   G_TYPE_NONE, 2,
 665                   GTK_TYPE_ADJUSTMENT,
 666                   GTK_TYPE_ADJUSTMENT);
 667
 668   tree_view_signals[ROW_ACTIVATED] =
 669     g_signal_new ("row_activated",
 670                   G_TYPE_FROM_CLASS (o_class),
 671                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 672                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 673                   NULL, NULL,
 674                   _gtk_marshal_VOID__BOXED_OBJECT,
 675                   G_TYPE_NONE, 2,
 676                   GTK_TYPE_TREE_PATH,
 677                   GTK_TYPE_TREE_VIEW_COLUMN);
 678
 679   tree_view_signals[TEST_EXPAND_ROW] =
 680     g_signal_new ("test_expand_row",
 681                   G_TYPE_FROM_CLASS (o_class),
 682                   G_SIGNAL_RUN_LAST,
 683                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 684                   _gtk_boolean_handled_accumulator, NULL,
 685                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 686                   G_TYPE_BOOLEAN, 2,
 687                   GTK_TYPE_TREE_ITER,
 688                   GTK_TYPE_TREE_PATH);
 689
 690   tree_view_signals[TEST_COLLAPSE_ROW] =
 691     g_signal_new ("test_collapse_row",
 692                   G_TYPE_FROM_CLASS (o_class),
 693                   G_SIGNAL_RUN_LAST,
 694                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 695                   _gtk_boolean_handled_accumulator, NULL,
 696                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 697                   G_TYPE_BOOLEAN, 2,
 698                   GTK_TYPE_TREE_ITER,
 699                   GTK_TYPE_TREE_PATH);
 700
 701   tree_view_signals[ROW_EXPANDED] =
 702     g_signal_new ("row_expanded",
 703                   G_TYPE_FROM_CLASS (o_class),
 704                   G_SIGNAL_RUN_LAST,
 705                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 706                   NULL, NULL,
 707                   _gtk_marshal_VOID__BOXED_BOXED,
 708                   G_TYPE_NONE, 2,
 709                   GTK_TYPE_TREE_ITER,
 710                   GTK_TYPE_TREE_PATH);
 711
 712   tree_view_signals[ROW_COLLAPSED] =
 713     g_signal_new ("row_collapsed",
 714                   G_TYPE_FROM_CLASS (o_class),
 715                   G_SIGNAL_RUN_LAST,
 716                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 717                   NULL, NULL,
 718                   _gtk_marshal_VOID__BOXED_BOXED,
 719                   G_TYPE_NONE, 2,
 720                   GTK_TYPE_TREE_ITER,
 721                   GTK_TYPE_TREE_PATH);
 722
 723   tree_view_signals[COLUMNS_CHANGED] =
 724     g_signal_new ("columns_changed",
 725                   G_TYPE_FROM_CLASS (o_class),
 726                   G_SIGNAL_RUN_LAST,
 727                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 728                   NULL, NULL,
 729                   _gtk_marshal_NONE__NONE,
 730                   G_TYPE_NONE, 0);
 731
 732   tree_view_signals[CURSOR_CHANGED] =
 733     g_signal_new ("cursor_changed",
 734                   G_TYPE_FROM_CLASS (o_class),
 735                   G_SIGNAL_RUN_LAST,
 736                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 737                   NULL, NULL,
 738                   _gtk_marshal_NONE__NONE,
 739                   G_TYPE_NONE, 0);
 740
 741   tree_view_signals[MOVE_CURSOR] =
 742     g_signal_new ("move_cursor",
 743                   G_TYPE_FROM_CLASS (object_class),
 744                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 745                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 746                   NULL, NULL,
 747                   _gtk_marshal_BOOLEAN__ENUM_INT,
 748                   G_TYPE_BOOLEAN, 2,
 749                   GTK_TYPE_MOVEMENT_STEP,
 750                   G_TYPE_INT);
 751
 752   tree_view_signals[SELECT_ALL] =
 753     g_signal_new ("select_all",
 754                   G_TYPE_FROM_CLASS (object_class),
 755                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 756                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
 757                   NULL, NULL,
 758                   _gtk_marshal_NONE__NONE,
 759                   G_TYPE_NONE, 0);
 760
 761   tree_view_signals[UNSELECT_ALL] =
 762     g_signal_new ("unselect_all",
 763                   G_TYPE_FROM_CLASS (object_class),
 764                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 765                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
 766                   NULL, NULL,
 767                   _gtk_marshal_NONE__NONE,
 768                   G_TYPE_NONE, 0);
 769
 770   tree_view_signals[SELECT_CURSOR_ROW] =
 771     g_signal_new ("select_cursor_row",
 772                   G_TYPE_FROM_CLASS (object_class),
 773                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 774                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
 775                   NULL, NULL,
 776                   _gtk_marshal_VOID__BOOLEAN,
 777                   G_TYPE_NONE, 1,
 778                   G_TYPE_BOOLEAN);
 779
 780   tree_view_signals[TOGGLE_CURSOR_ROW] =
 781     g_signal_new ("toggle_cursor_row",
 782                   G_TYPE_FROM_CLASS (object_class),
 783                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 784                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
 785                   NULL, NULL,
 786                   _gtk_marshal_NONE__NONE,
 787                   G_TYPE_NONE, 0);
 788
 789   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
 790     g_signal_new ("expand_collapse_cursor_row",
 791                   G_TYPE_FROM_CLASS (object_class),
 792                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 793                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
 794                   NULL, NULL,
 795                   _gtk_marshal_VOID__BOOLEAN_BOOLEAN_BOOLEAN,
 796                   G_TYPE_NONE, 3,
 797                   G_TYPE_BOOLEAN,
 798                   G_TYPE_BOOLEAN,
 799                   G_TYPE_BOOLEAN);
 800
 801   tree_view_signals[SELECT_CURSOR_PARENT] =
 802     g_signal_new ("select_cursor_parent",
 803                   G_TYPE_FROM_CLASS (object_class),
 804                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 805                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
 806                   NULL, NULL,
 807                   _gtk_marshal_NONE__NONE,
 808                   G_TYPE_NONE, 0);
 809
 810   tree_view_signals[START_INTERACTIVE_SEARCH] =
 811     g_signal_new ("start_interactive_search",
 812                   G_TYPE_FROM_CLASS (object_class),
 813                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 814                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
 815                   NULL, NULL,
 816                   _gtk_marshal_NONE__NONE,
 817                   G_TYPE_NONE, 0);
 818
 819   /* Key bindings */
 820   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0,
 821                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 822
 823   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0,
 824                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 825
 826   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
 827                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 828
 829   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
 830                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 831
 832   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0,
 833                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 834
 835   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0,
 836                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 837
 838   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0,
 839                                   GTK_MOVEMENT_PAGES, -1);
 840
 841   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0,
 842                                   GTK_MOVEMENT_PAGES, 1);
 843
 844   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move_cursor", 2,
 845                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 846                                 G_TYPE_INT, 1);
 847
 848   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move_cursor", 2,
 849                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 850                                 G_TYPE_INT, -1);
 851
 852   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK, "move_cursor", 2,
 853                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 854                                 G_TYPE_INT, 1);
 855
 856   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK, "move_cursor", 2,
 857                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 858                                 G_TYPE_INT, -1);
 859
 860   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 861                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 862                                 G_TYPE_INT, 1);
 863
 864   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 865                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 866                                 G_TYPE_INT, -1);
 867
 868   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle_cursor_row", 0);
 869
 870   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select_all", 0);
 871   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select_all", 0);
 872
 873   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect_all", 0);
 874   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect_all", 0);
 875
 876   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select_cursor_row", 1,
 877                                 G_TYPE_BOOLEAN, TRUE);
 878
 879   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select_cursor_row", 1,
 880                                 G_TYPE_BOOLEAN, TRUE);
 881
 882   /* expand and collapse rows */
 883   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand_collapse_cursor_row", 3,
 884                                 G_TYPE_BOOLEAN, FALSE,
 885                                 G_TYPE_BOOLEAN, TRUE,
 886                                 G_TYPE_BOOLEAN, FALSE);
 887   /* Not doable on US keyboards */
 888   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 889                                 G_TYPE_BOOLEAN, FALSE,
 890                                 G_TYPE_BOOLEAN, TRUE,
 891                                 G_TYPE_BOOLEAN, TRUE);
 892   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand_collapse_cursor_row", 3,
 893                                 G_TYPE_BOOLEAN, FALSE,
 894                                 G_TYPE_BOOLEAN, TRUE,
 895                                 G_TYPE_BOOLEAN, FALSE);
 896   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 897                                 G_TYPE_BOOLEAN, FALSE,
 898                                 G_TYPE_BOOLEAN, TRUE,
 899                                 G_TYPE_BOOLEAN, TRUE);
 900   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 901                                 G_TYPE_BOOLEAN, FALSE,
 902                                 G_TYPE_BOOLEAN, TRUE,
 903                                 G_TYPE_BOOLEAN, TRUE);
 904   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 905                                 G_TYPE_BOOLEAN, TRUE,
 906                                 G_TYPE_BOOLEAN, TRUE,
 907                                 G_TYPE_BOOLEAN, TRUE);
 908
 909   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand_collapse_cursor_row", 3,
 910                                 G_TYPE_BOOLEAN, FALSE,
 911                                 G_TYPE_BOOLEAN, FALSE,
 912                                 G_TYPE_BOOLEAN, FALSE);
 913   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 914                                 G_TYPE_BOOLEAN, FALSE,
 915                                 G_TYPE_BOOLEAN, FALSE,
 916                                 G_TYPE_BOOLEAN, TRUE);
 917   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand_collapse_cursor_row", 3,
 918                                 G_TYPE_BOOLEAN, FALSE,
 919                                 G_TYPE_BOOLEAN, FALSE,
 920                                 G_TYPE_BOOLEAN, FALSE);
 921   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 922                                 G_TYPE_BOOLEAN, FALSE,
 923                                 G_TYPE_BOOLEAN, FALSE,
 924                                 G_TYPE_BOOLEAN, TRUE);
 925   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 926                                 G_TYPE_BOOLEAN, FALSE,
 927                                 G_TYPE_BOOLEAN, FALSE,
 928                                 G_TYPE_BOOLEAN, TRUE);
 929
 930   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select_cursor_parent", 0);
 931
 932   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start_interactive_search", 0);
 933
 934   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start_interactive_search", 0);
 935 }
 936
 937 static void
 938 gtk_tree_view_init (GtkTreeView *tree_view)
 939 {
 940   tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);
 941   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
 942
 943   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
 944
 945   tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
 946
 947   /* We need some padding */
 948   tree_view->priv->dy = 0;
 949   tree_view->priv->n_columns = 0;
 950   tree_view->priv->header_height = 1;
 951   tree_view->priv->x_drag = 0;
 952   tree_view->priv->drag_pos = -1;
 953   tree_view->priv->header_has_focus = FALSE;
 954   tree_view->priv->pressed_button = -1;
 955   tree_view->priv->press_start_x = -1;
 956   tree_view->priv->press_start_y = -1;
 957   tree_view->priv->reorderable = FALSE;
 958   tree_view->priv->presize_handler_timer = 0;
 959   tree_view->priv->scroll_sync_timer = 0;
 960   tree_view->priv->fixed_height_check = 0;
 961   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
 962   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
 963   tree_view->priv->enable_search = TRUE;
 964   tree_view->priv->search_column = -1;
 965   tree_view->priv->search_dialog_position_func = gtk_tree_view_search_position_func;
 966   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
 967 }
 968
 969 \f
 970
 971 /* GObject Methods
 972  */
 973
 974 static void
 975 gtk_tree_view_set_property (GObject         *object,
 976                             guint            prop_id,
 977                             const GValue    *value,
 978                             GParamSpec      *pspec)
 979 {
 980   GtkTreeView *tree_view;
 981
 982   tree_view = GTK_TREE_VIEW (object);
 983
 984   switch (prop_id)
 985     {
 986     case PROP_MODEL:
 987       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
 988       break;
 989     case PROP_HADJUSTMENT:
 990       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
 991       break;
 992     case PROP_VADJUSTMENT:
 993       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
 994       break;
 995     case PROP_HEADERS_VISIBLE:
 996       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
 997       break;
 998     case PROP_HEADERS_CLICKABLE:
 999       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1000       break;
1001     case PROP_EXPANDER_COLUMN:
1002       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1003       break;
1004     case PROP_REORDERABLE:
1005       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1006       break;
1007     case PROP_RULES_HINT:
1008       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1009       break;
1010     case PROP_ENABLE_SEARCH:
1011       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1012       break;
1013     case PROP_SEARCH_COLUMN:
1014       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1015       break;
1016     default:
1017       break;
1018     }
1019 }
1020
1021 static void
1022 gtk_tree_view_get_property (GObject    *object,
1023                             guint       prop_id,
1024                             GValue     *value,
1025                             GParamSpec *pspec)
1026 {
1027   GtkTreeView *tree_view;
1028
1029   tree_view = GTK_TREE_VIEW (object);
1030
1031   switch (prop_id)
1032     {
1033     case PROP_MODEL:
1034       g_value_set_object (value, tree_view->priv->model);
1035       break;
1036     case PROP_HADJUSTMENT:
1037       g_value_set_object (value, tree_view->priv->hadjustment);
1038       break;
1039     case PROP_VADJUSTMENT:
1040       g_value_set_object (value, tree_view->priv->vadjustment);
1041       break;
1042     case PROP_HEADERS_VISIBLE:
1043       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1044       break;
1045     case PROP_EXPANDER_COLUMN:
1046       g_value_set_object (value, tree_view->priv->expander_column);
1047       break;
1048     case PROP_REORDERABLE:
1049       g_value_set_boolean (value, tree_view->priv->reorderable);
1050       break;
1051     case PROP_RULES_HINT:
1052       g_value_set_boolean (value, tree_view->priv->has_rules);
1053       break;
1054     case PROP_ENABLE_SEARCH:
1055       g_value_set_boolean (value, tree_view->priv->enable_search);
1056       break;
1057     case PROP_SEARCH_COLUMN:
1058       g_value_set_int (value, tree_view->priv->search_column);
1059       break;
1060     default:
1061       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1062       break;
1063     }
1064 }
1065
1066 static void
1067 gtk_tree_view_finalize (GObject *object)
1068 {
1069   GtkTreeView *tree_view = (GtkTreeView *) object;
1070
1071   g_free (tree_view->priv);
1072
1073   if (G_OBJECT_CLASS (parent_class)->finalize)
1074     (* G_OBJECT_CLASS (parent_class)->finalize) (object);
1075 }
1076
1077 \f
1078
1079 /* GtkObject Methods
1080  */
1081
1082 static void
1083 gtk_tree_view_destroy (GtkObject *object)
1084 {
1085   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1086   GtkWidget *search_dialog;
1087   GList *list;
1088
1089   gtk_tree_view_stop_editing (tree_view, TRUE);
1090
1091   if (tree_view->priv->columns != NULL)
1092     {
1093       list = tree_view->priv->columns;
1094       while (list)
1095         {
1096           GtkTreeViewColumn *column;
1097           column = GTK_TREE_VIEW_COLUMN (list->data);
1098           list = list->next;
1099           gtk_tree_view_remove_column (tree_view, column);
1100         }
1101       tree_view->priv->columns = NULL;
1102     }
1103
1104   if (tree_view->priv->tree != NULL)
1105     {
1106       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1107       _gtk_rbtree_free (tree_view->priv->tree);
1108       tree_view->priv->tree = NULL;
1109     }
1110
1111   if (tree_view->priv->selection != NULL)
1112     {
1113       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1114       g_object_unref (tree_view->priv->selection);
1115       tree_view->priv->selection = NULL;
1116     }
1117
1118   if (tree_view->priv->scroll_to_path != NULL)
1119     {
1120       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1121       tree_view->priv->scroll_to_path = NULL;
1122     }
1123
1124   if (tree_view->priv->drag_dest_row != NULL)
1125     {
1126       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1127       tree_view->priv->drag_dest_row = NULL;
1128     }
1129
1130   if (tree_view->priv->last_button_press != NULL)
1131     {
1132       gtk_tree_row_reference_free (tree_view->priv->last_button_press);
1133       tree_view->priv->last_button_press = NULL;
1134     }
1135
1136   if (tree_view->priv->last_button_press_2 != NULL)
1137     {
1138       gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
1139       tree_view->priv->last_button_press_2 = NULL;
1140     }
1141
1142   if (tree_view->priv->top_row != NULL)
1143     {
1144       gtk_tree_row_reference_free (tree_view->priv->top_row);
1145       tree_view->priv->top_row = NULL;
1146     }
1147
1148   if (tree_view->priv->column_drop_func_data &&
1149       tree_view->priv->column_drop_func_data_destroy)
1150     {
1151       (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
1152       tree_view->priv->column_drop_func_data = NULL;
1153     }
1154
1155   if (tree_view->priv->destroy_count_destroy &&
1156       tree_view->priv->destroy_count_data)
1157     {
1158       (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
1159       tree_view->priv->destroy_count_data = NULL;
1160     }
1161
1162   gtk_tree_row_reference_free (tree_view->priv->cursor);
1163   tree_view->priv->cursor = NULL;
1164
1165   gtk_tree_row_reference_free (tree_view->priv->anchor);
1166   tree_view->priv->anchor = NULL;
1167
1168   /* destroy interactive search dialog */
1169   search_dialog = g_object_get_data (G_OBJECT (tree_view),
1170                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
1171   if (search_dialog)
1172     gtk_tree_view_search_dialog_destroy (search_dialog,
1173                                          tree_view);
1174
1175   if (tree_view->priv->search_user_data)
1176     {
1177       (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
1178       tree_view->priv->search_user_data = NULL;
1179     }
1180
1181   gtk_tree_view_set_model (tree_view, NULL);
1182
1183   if (GTK_OBJECT_CLASS (parent_class)->destroy)
1184     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
1185 }
1186
1187 \f
1188
1189 /* GtkWidget Methods
1190  */
1191
1192 /* GtkWidget::map helper */
1193 static void
1194 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1195 {
1196   GList *list;
1197
1198   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1199
1200   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1201     {
1202       GtkTreeViewColumn *column;
1203
1204       for (list = tree_view->priv->columns; list; list = list->next)
1205         {
1206           column = list->data;
1207           if (GTK_WIDGET_VISIBLE (column->button) &&
1208               !GTK_WIDGET_MAPPED (column->button))
1209             gtk_widget_map (column->button);
1210         }
1211       for (list = tree_view->priv->columns; list; list = list->next)
1212         {
1213           column = list->data;
1214           if (column->visible == FALSE)
1215             continue;
1216           if (column->resizable)
1217             {
1218               gdk_window_raise (column->window);
1219               gdk_window_show (column->window);
1220             }
1221           else
1222             gdk_window_hide (column->window);
1223         }
1224       gdk_window_show (tree_view->priv->header_window);
1225     }
1226 }
1227
1228 static void
1229 gtk_tree_view_map (GtkWidget *widget)
1230 {
1231   GList *tmp_list;
1232   GtkTreeView *tree_view;
1233
1234   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1235
1236   tree_view = GTK_TREE_VIEW (widget);
1237
1238   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1239
1240   tmp_list = tree_view->priv->children;
1241   while (tmp_list)
1242     {
1243       GtkTreeViewChild *child = tmp_list->data;
1244       tmp_list = tmp_list->next;
1245
1246       if (GTK_WIDGET_VISIBLE (child->widget))
1247         {
1248           if (!GTK_WIDGET_MAPPED (child->widget))
1249             gtk_widget_map (child->widget);
1250         }
1251     }
1252   gdk_window_show (tree_view->priv->bin_window);
1253
1254   gtk_tree_view_map_buttons (tree_view);
1255
1256   gdk_window_show (widget->window);
1257 }
1258
1259 static void
1260 gtk_tree_view_realize (GtkWidget *widget)
1261 {
1262   GList *tmp_list;
1263   GtkTreeView *tree_view;
1264   GdkGCValues values;
1265   GdkWindowAttr attributes;
1266   gint attributes_mask;
1267
1268   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1269
1270   tree_view = GTK_TREE_VIEW (widget);
1271
1272   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1273
1274   /* Make the main, clipping window */
1275   attributes.window_type = GDK_WINDOW_CHILD;
1276   attributes.x = widget->allocation.x;
1277   attributes.y = widget->allocation.y;
1278   attributes.width = widget->allocation.width;
1279   attributes.height = widget->allocation.height;
1280   attributes.wclass = GDK_INPUT_OUTPUT;
1281   attributes.visual = gtk_widget_get_visual (widget);
1282   attributes.colormap = gtk_widget_get_colormap (widget);
1283   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1284
1285   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1286
1287   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1288                                    &attributes, attributes_mask);
1289   gdk_window_set_user_data (widget->window, widget);
1290
1291   /* Make the window for the tree */
1292   attributes.x = 0;
1293   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1294   attributes.width = tree_view->priv->width;
1295   attributes.height = widget->allocation.height;
1296   attributes.event_mask = GDK_EXPOSURE_MASK |
1297     GDK_SCROLL_MASK |
1298     GDK_POINTER_MOTION_MASK |
1299     GDK_ENTER_NOTIFY_MASK |
1300     GDK_LEAVE_NOTIFY_MASK |
1301     GDK_BUTTON_PRESS_MASK |
1302     GDK_BUTTON_RELEASE_MASK |
1303     gtk_widget_get_events (widget);
1304
1305   tree_view->priv->bin_window = gdk_window_new (widget->window,
1306                                                 &attributes, attributes_mask);
1307   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1308
1309   /* Make the column header window */
1310   attributes.x = 0;
1311   attributes.y = 0;
1312   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1313   attributes.height = tree_view->priv->header_height;
1314   attributes.event_mask = (GDK_EXPOSURE_MASK |
1315                            GDK_SCROLL_MASK |
1316                            GDK_BUTTON_PRESS_MASK |
1317                            GDK_BUTTON_RELEASE_MASK |
1318                            GDK_KEY_PRESS_MASK |
1319                            GDK_KEY_RELEASE_MASK) |
1320     gtk_widget_get_events (widget);
1321
1322   tree_view->priv->header_window = gdk_window_new (widget->window,
1323                                                    &attributes, attributes_mask);
1324   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1325
1326
1327   values.foreground = (widget->style->white.pixel==0 ?
1328                        widget->style->black:widget->style->white);
1329   values.function = GDK_XOR;
1330   values.subwindow_mode = GDK_INCLUDE_INFERIORS;
1331
1332   /* Add them all up. */
1333   widget->style = gtk_style_attach (widget->style, widget->window);
1334   gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1335   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1336   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1337
1338   tmp_list = tree_view->priv->children;
1339   while (tmp_list)
1340     {
1341       GtkTreeViewChild *child = tmp_list->data;
1342       tmp_list = tmp_list->next;
1343
1344       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1345     }
1346
1347   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1348     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1349
1350   install_presize_handler (tree_view);
1351 }
1352
1353 static void
1354 gtk_tree_view_unrealize (GtkWidget *widget)
1355 {
1356   GtkTreeView *tree_view;
1357   GList *list;
1358
1359   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1360
1361   tree_view = GTK_TREE_VIEW (widget);
1362
1363   if (tree_view->priv->scroll_timeout != 0)
1364     {
1365       gtk_timeout_remove (tree_view->priv->scroll_timeout);
1366       tree_view->priv->scroll_timeout = 0;
1367     }
1368
1369   if (tree_view->priv->open_dest_timeout != 0)
1370     {
1371       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
1372       tree_view->priv->open_dest_timeout = 0;
1373     }
1374
1375   if (tree_view->priv->expand_collapse_timeout != 0)
1376     {
1377       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
1378       tree_view->priv->expand_collapse_timeout = 0;
1379     }
1380
1381   if (tree_view->priv->presize_handler_timer != 0)
1382     {
1383       gtk_timeout_remove (tree_view->priv->presize_handler_timer);
1384       tree_view->priv->presize_handler_timer = 0;
1385     }
1386
1387   if (tree_view->priv->validate_rows_timer != 0)
1388     {
1389       gtk_timeout_remove (tree_view->priv->validate_rows_timer);
1390       tree_view->priv->validate_rows_timer = 0;
1391     }
1392
1393   if (tree_view->priv->scroll_sync_timer != 0)
1394     {
1395       gtk_timeout_remove (tree_view->priv->scroll_sync_timer);
1396       tree_view->priv->scroll_sync_timer = 0;
1397     }
1398
1399   for (list = tree_view->priv->columns; list; list = list->next)
1400     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1401
1402   gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
1403   gdk_window_destroy (tree_view->priv->bin_window);
1404   tree_view->priv->bin_window = NULL;
1405
1406   gdk_window_set_user_data (tree_view->priv->header_window, NULL);
1407   gdk_window_destroy (tree_view->priv->header_window);
1408   tree_view->priv->header_window = NULL;
1409
1410   if (tree_view->priv->drag_window)
1411     {
1412       gdk_window_set_user_data (tree_view->priv->drag_window, NULL);
1413       gdk_window_destroy (tree_view->priv->drag_window);
1414       tree_view->priv->drag_window = NULL;
1415     }
1416
1417   if (tree_view->priv->drag_highlight_window)
1418     {
1419       gdk_window_set_user_data (tree_view->priv->drag_highlight_window, NULL);
1420       gdk_window_destroy (tree_view->priv->drag_highlight_window);
1421       tree_view->priv->drag_highlight_window = NULL;
1422     }
1423
1424   /* GtkWidget::unrealize destroys children and widget->window */
1425   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1426     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1427 }
1428
1429 /* GtkWidget::size_request helper */
1430 static void
1431 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1432 {
1433   GList *list;
1434
1435   tree_view->priv->header_height = 0;
1436
1437   if (tree_view->priv->model)
1438     {
1439       for (list = tree_view->priv->columns; list; list = list->next)
1440         {
1441           GtkRequisition requisition;
1442           GtkTreeViewColumn *column = list->data;
1443
1444           if (column->button == NULL)
1445             continue;
1446
1447           column = list->data;
1448
1449           gtk_widget_size_request (column->button, &requisition);
1450           column->button_request = requisition.width;
1451           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1452         }
1453     }
1454 }
1455
1456
1457 static void
1458 gtk_tree_view_update_size (GtkTreeView *tree_view)
1459 {
1460   GList *list;
1461   GtkTreeViewColumn *column;
1462   gint i;
1463
1464   if (tree_view->priv->model == NULL)
1465     {
1466       tree_view->priv->width = 0;
1467       tree_view->priv->height = 0;
1468       return;
1469     }
1470
1471   tree_view->priv->width = 0;
1472   /* keep this in sync with size_allocate below */
1473   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1474     {
1475       gint real_requested_width = 0;
1476       column = list->data;
1477       if (!column->visible)
1478         continue;
1479
1480       if (column->use_resized_width)
1481         {
1482           real_requested_width = column->resized_width;
1483         }
1484       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1485         {
1486           real_requested_width = column->fixed_width;
1487         }
1488       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1489         {
1490           real_requested_width = MAX (column->requested_width, column->button_request);
1491         }
1492       else
1493         {
1494           real_requested_width = column->requested_width;
1495         }
1496
1497       if (column->min_width != -1)
1498         real_requested_width = MAX (real_requested_width, column->min_width);
1499       if (column->max_width != -1)
1500         real_requested_width = MIN (real_requested_width, column->max_width);
1501
1502       tree_view->priv->width += real_requested_width;
1503     }
1504
1505   if (tree_view->priv->tree == NULL)
1506     tree_view->priv->height = 0;
1507   else
1508     tree_view->priv->height = tree_view->priv->tree->root->offset;
1509 }
1510
1511 static void
1512 gtk_tree_view_size_request (GtkWidget      *widget,
1513                             GtkRequisition *requisition)
1514 {
1515   GtkTreeView *tree_view;
1516   GList *tmp_list;
1517
1518   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1519
1520   tree_view = GTK_TREE_VIEW (widget);
1521
1522   /* we validate 50 rows initially just to make sure we have some size */
1523   /* in practice, with a lot of static lists, this should get a good width */
1524   validate_rows (tree_view);
1525   gtk_tree_view_size_request_columns (tree_view);
1526   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
1527
1528   requisition->width = tree_view->priv->width;
1529   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
1530
1531   tmp_list = tree_view->priv->children;
1532
1533   while (tmp_list)
1534     {
1535       GtkTreeViewChild *child = tmp_list->data;
1536       GtkRequisition child_requisition;
1537
1538       tmp_list = tmp_list->next;
1539
1540       if (GTK_WIDGET_VISIBLE (child->widget))
1541         gtk_widget_size_request (child->widget, &child_requisition);
1542     }
1543 }
1544
1545 /* GtkWidget::size_allocate helper */
1546 static void
1547 gtk_tree_view_size_allocate_columns (GtkWidget *widget)
1548 {
1549   GtkTreeView *tree_view;
1550   GList *list, *last_column;
1551   GtkTreeViewColumn *column;
1552   GtkAllocation allocation;
1553   gint width = 0;
1554
1555   tree_view = GTK_TREE_VIEW (widget);
1556
1557   for (last_column = g_list_last (tree_view->priv->columns);
1558        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
1559        last_column = last_column->prev)
1560     ;
1561   if (last_column == NULL)
1562     return;
1563
1564   allocation.y = 0;
1565   allocation.height = tree_view->priv->header_height;
1566
1567   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
1568     {
1569       gint real_requested_width = 0;
1570       column = list->data;
1571       if (!column->visible)
1572         continue;
1573
1574       /* We need to handle the dragged button specially.
1575        */
1576       if (column == tree_view->priv->drag_column)
1577         {
1578           GtkAllocation drag_allocation;
1579           gdk_drawable_get_size (tree_view->priv->drag_window,
1580                                  &(drag_allocation.width),
1581                                  &(drag_allocation.height));
1582           drag_allocation.x = 0;
1583           drag_allocation.y = 0;
1584           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
1585                                     &drag_allocation);
1586           width += drag_allocation.width;
1587           continue;
1588         }
1589
1590       if (column->use_resized_width)
1591         {
1592           real_requested_width = column->resized_width;
1593         }
1594       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1595         {
1596           real_requested_width = column->fixed_width;
1597         }
1598       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1599         {
1600           real_requested_width = MAX (column->requested_width, column->button_request);
1601         }
1602       else
1603         {
1604           real_requested_width = column->requested_width;
1605           if (real_requested_width < 0)
1606             real_requested_width = 0;
1607         }
1608
1609       if (column->min_width != -1)
1610         real_requested_width = MAX (real_requested_width, column->min_width);
1611       if (column->max_width != -1)
1612         real_requested_width = MIN (real_requested_width, column->max_width);
1613
1614       allocation.x = width;
1615       column->width = real_requested_width;
1616       if (list == last_column &&
1617           width + real_requested_width < widget->allocation.width)
1618         {
1619           column->width += (widget->allocation.width - column->width - width);
1620         }
1621       g_object_notify (G_OBJECT (column), "width");
1622       allocation.width = column->width;
1623       width += column->width;
1624       gtk_widget_size_allocate (column->button, &allocation);
1625       if (column->window)
1626         gdk_window_move_resize (column->window,
1627                                 allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
1628                                 allocation.y,
1629                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
1630     }
1631 }
1632
1633 static void
1634 invalidate_last_column (GtkTreeView *tree_view)
1635 {
1636   GList *list, *last_column;
1637   gint last_column_x;
1638   GtkWidget *widget = GTK_WIDGET (tree_view);
1639
1640   for (last_column = g_list_last (tree_view->priv->columns);
1641        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
1642        last_column = last_column->prev)
1643     ;
1644
1645   last_column_x = 0;
1646   for (list = tree_view->priv->columns; list; list = list->next)
1647     {
1648       GtkTreeViewColumn *column = list->data;
1649       if (list == last_column)
1650         {
1651           GdkRectangle invalid_rect;
1652
1653           invalid_rect.x = last_column_x;
1654           invalid_rect.y = 0;
1655           invalid_rect.width = column->width;
1656           invalid_rect.height = widget->allocation.height;
1657
1658           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
1659           break;
1660         }
1661
1662       last_column_x += column->width;
1663     }
1664 }
1665
1666 static void
1667 gtk_tree_view_size_allocate (GtkWidget     *widget,
1668                              GtkAllocation *allocation)
1669 {
1670   GList *tmp_list;
1671   GtkTreeView *tree_view;
1672   gboolean width_changed = FALSE;
1673
1674   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1675
1676   if (allocation->width != widget->allocation.width)
1677     width_changed = TRUE;
1678
1679   widget->allocation = *allocation;
1680
1681   tree_view = GTK_TREE_VIEW (widget);
1682
1683   tmp_list = tree_view->priv->children;
1684
1685   while (tmp_list)
1686     {
1687       GtkAllocation allocation;
1688
1689       GtkTreeViewChild *child = tmp_list->data;
1690       tmp_list = tmp_list->next;
1691
1692       /* totally ignore our childs requisition */
1693       allocation.x = child->x;
1694       allocation.y = child->y;
1695       allocation.width = child->width;
1696       allocation.height = child->height;
1697       gtk_widget_size_allocate (child->widget, &allocation);
1698     }
1699
1700
1701   tree_view->priv->hadjustment->page_size = allocation->width;
1702   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
1703   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
1704   tree_view->priv->hadjustment->lower = 0;
1705   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
1706
1707   if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
1708     tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1709   gtk_adjustment_changed (tree_view->priv->hadjustment);
1710
1711   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
1712   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
1713   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
1714   tree_view->priv->vadjustment->lower = 0;
1715   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
1716
1717   if (tree_view->priv->vadjustment->value + allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view) > tree_view->priv->height)
1718     gtk_adjustment_set_value (tree_view->priv->vadjustment,
1719                               MAX (tree_view->priv->height - tree_view->priv->vadjustment->page_size, 0));
1720   gtk_adjustment_changed (tree_view->priv->vadjustment);
1721
1722   if (GTK_WIDGET_REALIZED (widget))
1723     {
1724       gdk_window_move_resize (widget->window,
1725                               allocation->x, allocation->y,
1726                               allocation->width, allocation->height);
1727       gdk_window_move_resize (tree_view->priv->header_window,
1728                               - (gint) tree_view->priv->hadjustment->value,
1729                               0,
1730                               MAX (tree_view->priv->width, allocation->width),
1731                               tree_view->priv->header_height);
1732       gdk_window_move_resize (tree_view->priv->bin_window,
1733                               - (gint) tree_view->priv->hadjustment->value,
1734                               TREE_VIEW_HEADER_HEIGHT (tree_view),
1735                               MAX (tree_view->priv->width, allocation->width),
1736                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
1737     }
1738
1739   gtk_tree_view_size_allocate_columns (widget);
1740
1741   if (GTK_WIDGET_REALIZED (widget) && width_changed)
1742     invalidate_last_column (tree_view);
1743 }
1744
1745 static gboolean
1746 gtk_tree_view_button_press (GtkWidget      *widget,
1747                             GdkEventButton *event)
1748 {
1749   GtkTreeView *tree_view;
1750   GList *list;
1751   GtkTreeViewColumn *column = NULL;
1752   gint i;
1753   GdkRectangle background_area;
1754   GdkRectangle cell_area;
1755   gint vertical_separator;
1756   gint horizontal_separator;
1757
1758   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
1759   g_return_val_if_fail (event != NULL, FALSE);
1760
1761   tree_view = GTK_TREE_VIEW (widget);
1762   gtk_tree_view_stop_editing (tree_view, FALSE);
1763   gtk_widget_style_get (widget,
1764                         "vertical_separator", &vertical_separator,
1765                         "horizontal_separator", &horizontal_separator,
1766                         NULL);
1767
1768   if (event->window == tree_view->priv->bin_window &&
1769       tree_view->priv->tree != NULL)
1770     {
1771       GtkRBNode *node;
1772       GtkRBTree *tree;
1773       GtkTreePath *path;
1774       gchar *path_string;
1775       gint depth;
1776       gint new_y;
1777       gint y_offset;
1778       gint dval;
1779       gint pre_val, aft_val;
1780       GtkTreeViewColumn *column = NULL;
1781       GtkCellRenderer *focus_cell = NULL;
1782       gint column_handled_click = FALSE;
1783       gboolean emit_row_activated = FALSE;
1784
1785       if (!GTK_WIDGET_HAS_FOCUS (widget))
1786         gtk_widget_grab_focus (widget);
1787       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1788
1789       /* are we in an arrow? */
1790       if (tree_view->priv->prelight_node &&
1791           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
1792         {
1793           if (event->button == 1)
1794             {
1795               gtk_grab_add (widget);
1796               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
1797               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
1798               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
1799                                         tree_view->priv->prelight_tree,
1800                                         tree_view->priv->prelight_node,
1801                                         event->x,
1802                                         event->y);
1803             }
1804           return TRUE;
1805         }
1806
1807       /* find the node that was clicked */
1808       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
1809       if (new_y < 0)
1810         new_y = 0;
1811       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
1812
1813       if (node == NULL)
1814         /* We clicked in dead space */
1815         return TRUE;
1816
1817       /* Get the path and the node */
1818       path = _gtk_tree_view_find_path (tree_view, tree, node);
1819       depth = gtk_tree_path_get_depth (path);
1820       background_area.y = y_offset + event->y;
1821       background_area.height = MAX (GTK_RBNODE_GET_HEIGHT (node),
1822                                     tree_view->priv->expander_size);
1823       background_area.x = 0;
1824
1825       /* Let the column have a chance at selecting it. */
1826       for (list = tree_view->priv->columns; list; list = list->next)
1827         {
1828           column = list->data;
1829
1830           if (!column->visible)
1831             continue;
1832
1833           background_area.width = column->width;
1834           if ((background_area.x > (gint) event->x) ||
1835               (background_area.x + background_area.width <= (gint) event->x))
1836             {
1837               background_area.x += background_area.width;
1838               continue;
1839             }
1840
1841           /* we found the focus column */
1842           cell_area = background_area;
1843           cell_area.width -= horizontal_separator;
1844           cell_area.height -= vertical_separator;
1845           cell_area.x += horizontal_separator/2;
1846           cell_area.y += vertical_separator/2;
1847           if (gtk_tree_view_is_expander_column (tree_view, column) &&
1848               TREE_VIEW_DRAW_EXPANDERS(tree_view))
1849             {
1850               cell_area.x += depth * tree_view->priv->expander_size;
1851               cell_area.width -= depth * tree_view->priv->expander_size;
1852             }
1853           break;
1854         }
1855
1856       if (column == NULL)
1857         {
1858           gtk_tree_path_free (path);
1859
1860           return FALSE;
1861         }
1862
1863       /* decide if we edit */
1864       if (event->type == GDK_BUTTON_PRESS &&
1865           !(event->state & gtk_accelerator_get_default_mod_mask ()))
1866         {
1867           GtkTreePath *anchor;
1868           GtkTreeIter iter;
1869
1870           if (tree_view->priv->anchor)
1871             {
1872               anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
1873               gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
1874               gtk_tree_view_column_cell_set_cell_data (column,
1875                                                        tree_view->priv->model,
1876                                                        &iter,
1877                                                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
1878                                                        node->children?TRUE:FALSE);
1879             }
1880           else
1881             anchor = NULL;
1882
1883           if ((anchor && !gtk_tree_path_compare (anchor, path))
1884               || !_gtk_tree_view_column_has_editable_cell (column))
1885             {
1886               GtkCellEditable *cell_editable = NULL;
1887
1888               /* FIXME: get the right flags */
1889               guint flags = 0;
1890
1891               path_string = gtk_tree_path_to_string (path);
1892
1893               if (_gtk_tree_view_column_cell_event (column,
1894                                                     &cell_editable,
1895                                                     (GdkEvent *)event,
1896                                                     path_string,
1897                                                     &background_area,
1898                                                     &cell_area, flags))
1899                 {
1900                   if (cell_editable != NULL)
1901                     {
1902                       gint left, right;
1903                       GdkRectangle area;
1904
1905                       area = cell_area;
1906                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
1907
1908                       area.x += left;
1909                       area.width -= right + left;
1910
1911                       gtk_tree_view_real_start_editing (tree_view,
1912                                                         column,
1913                                                         path,
1914                                                         cell_editable,
1915                                                         &area,
1916                                                         (GdkEvent *)event,
1917                                                         flags);
1918                       g_free (path_string);
1919                       gtk_tree_path_free (path);
1920                       gtk_tree_path_free (anchor);
1921                       return TRUE;
1922                     }
1923                   column_handled_click = TRUE;
1924                 }
1925               g_free (path_string);
1926             }
1927           if (anchor)
1928             gtk_tree_path_free (anchor);
1929         }
1930
1931       /* select */
1932       pre_val = tree_view->priv->vadjustment->value;
1933
1934       tree_view->priv->focus_column = column;
1935       focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
1936       if (focus_cell)
1937         gtk_tree_view_column_focus_cell (column, focus_cell);
1938
1939       if (event->state & GDK_CONTROL_MASK)
1940         {
1941           gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
1942           gtk_tree_view_real_toggle_cursor_row (tree_view);
1943         }
1944       else if (event->state & GDK_SHIFT_MASK)
1945         {
1946           gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
1947           gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
1948         }
1949       else
1950         {
1951           gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
1952         }
1953
1954       /* the treeview may have been scrolled because of _set_cursor,
1955        * correct here
1956        */
1957
1958       aft_val = tree_view->priv->vadjustment->value;
1959       dval = pre_val - aft_val;
1960
1961       cell_area.y += dval;
1962       background_area.y += dval;
1963
1964       /* Save press to possibly begin a drag
1965        */
1966       if (!column_handled_click &&
1967           tree_view->priv->pressed_button < 0)
1968         {
1969           tree_view->priv->pressed_button = event->button;
1970           tree_view->priv->press_start_x = event->x;
1971           tree_view->priv->press_start_y = event->y;
1972         }
1973
1974       if (event->button == 1 && event->type == GDK_2BUTTON_PRESS &&
1975           tree_view->priv->last_button_press)
1976         {
1977           GtkTreePath *lsc;
1978
1979           lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press);
1980
1981           if (tree_view->priv->last_button_press)
1982             gtk_tree_row_reference_free (tree_view->priv->last_button_press);
1983           if (tree_view->priv->last_button_press_2)
1984             gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
1985           tree_view->priv->last_button_press = NULL;
1986           tree_view->priv->last_button_press_2 = NULL;
1987
1988           if (lsc)
1989             {
1990               if (!gtk_tree_path_compare (lsc, path))
1991                 emit_row_activated = TRUE;
1992               gtk_tree_path_free (lsc);
1993             }
1994         }
1995       else if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
1996         {
1997           if (tree_view->priv->last_button_press)
1998             gtk_tree_row_reference_free (tree_view->priv->last_button_press);
1999           tree_view->priv->last_button_press = tree_view->priv->last_button_press_2;
2000           tree_view->priv->last_button_press_2 = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
2001         }
2002
2003       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2004
2005       if (emit_row_activated)
2006         {
2007           gtk_grab_remove (widget);
2008           gtk_tree_view_row_activated (tree_view, path, column);
2009         }
2010
2011       gtk_tree_path_free (path);
2012
2013       return TRUE;
2014     }
2015
2016   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2017    */
2018   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2019     {
2020       column = list->data;
2021       if (event->window == column->window &&
2022           column->resizable &&
2023           column->window)
2024         {
2025           gpointer drag_data;
2026
2027           if (event->type == GDK_2BUTTON_PRESS &&
2028               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2029             {
2030               _gtk_tree_view_column_autosize (tree_view, column);
2031               break;
2032             }
2033
2034           if (gdk_pointer_grab (column->window, FALSE,
2035                                 GDK_POINTER_MOTION_HINT_MASK |
2036                                 GDK_BUTTON1_MOTION_MASK |
2037                                 GDK_BUTTON_RELEASE_MASK,
2038                                 NULL, NULL, event->time))
2039             return FALSE;
2040
2041           gtk_grab_add (widget);
2042           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2043           column->resized_width = column->width;
2044           column->use_resized_width = TRUE;
2045
2046           /* block attached dnd signal handler */
2047           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2048           if (drag_data)
2049             g_signal_handlers_block_matched (widget,
2050                                              G_SIGNAL_MATCH_DATA,
2051                                              0, 0, NULL, NULL,
2052                                              drag_data);
2053
2054           if (!GTK_WIDGET_HAS_FOCUS (widget))
2055             gtk_widget_grab_focus (widget);
2056
2057           tree_view->priv->drag_pos = i;
2058           tree_view->priv->x_drag = (column->button->allocation.x + column->button->allocation.width);
2059           break;
2060         }
2061     }
2062   return TRUE;
2063 }
2064
2065 /* GtkWidget::button_release_event helper */
2066 static gboolean
2067 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2068                                           GdkEventButton *event)
2069 {
2070   GtkTreeView *tree_view;
2071
2072   tree_view = GTK_TREE_VIEW (widget);
2073
2074   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2075   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2076
2077   /* Move the button back */
2078   g_object_ref (tree_view->priv->drag_column->button);
2079   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2080   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2081   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2082   g_object_unref (tree_view->priv->drag_column->button);
2083   gtk_widget_queue_resize (widget);
2084   if (tree_view->priv->drag_column->resizable)
2085     {
2086       gdk_window_raise (tree_view->priv->drag_column->window);
2087       gdk_window_show (tree_view->priv->drag_column->window);
2088     }
2089   else
2090     gdk_window_hide (tree_view->priv->drag_column->window);
2091
2092   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2093
2094   if (tree_view->priv->cur_reorder &&
2095       tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2096     gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2097                                      tree_view->priv->cur_reorder->left_column);
2098   tree_view->priv->drag_column = NULL;
2099   gdk_window_hide (tree_view->priv->drag_window);
2100
2101   g_list_foreach (tree_view->priv->column_drag_info, (GFunc) g_free, NULL);
2102   g_list_free (tree_view->priv->column_drag_info);
2103   tree_view->priv->column_drag_info = NULL;
2104
2105   gdk_window_hide (tree_view->priv->drag_highlight_window);
2106
2107   /* Reset our flags */
2108   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2109   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2110
2111   return TRUE;
2112 }
2113
2114 /* GtkWidget::button_release_event helper */
2115 static gboolean
2116 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2117                                             GdkEventButton *event)
2118 {
2119   GtkTreeView *tree_view;
2120   gpointer drag_data;
2121   gint x;
2122   gint i;
2123
2124   tree_view = GTK_TREE_VIEW (widget);
2125
2126   i = tree_view->priv->drag_pos;
2127   tree_view->priv->drag_pos = -1;
2128
2129       /* unblock attached dnd signal handler */
2130   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2131   if (drag_data)
2132     g_signal_handlers_unblock_matched (widget,
2133                                        G_SIGNAL_MATCH_DATA,
2134                                        0, 0, NULL, NULL,
2135                                        drag_data);
2136
2137   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2138   gtk_widget_get_pointer (widget, &x, NULL);
2139   gtk_grab_remove (widget);
2140   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
2141                               event->time);
2142   return TRUE;
2143 }
2144
2145 static gboolean
2146 gtk_tree_view_button_release (GtkWidget      *widget,
2147                               GdkEventButton *event)
2148 {
2149   GtkTreeView *tree_view;
2150
2151   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2152   g_return_val_if_fail (event != NULL, FALSE);
2153
2154   tree_view = GTK_TREE_VIEW (widget);
2155
2156   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2157     return gtk_tree_view_button_release_drag_column (widget, event);
2158
2159   if (tree_view->priv->pressed_button == event->button)
2160     tree_view->priv->pressed_button = -1;
2161
2162   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2163     return gtk_tree_view_button_release_column_resize (widget, event);
2164
2165   if (tree_view->priv->button_pressed_node == NULL)
2166     return FALSE;
2167
2168   if (event->button == 1)
2169     {
2170       gtk_grab_remove (widget);
2171       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
2172           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2173         {
2174           GtkTreePath *path = NULL;
2175
2176           path = _gtk_tree_view_find_path (tree_view,
2177                                            tree_view->priv->button_pressed_tree,
2178                                            tree_view->priv->button_pressed_node);
2179           /* Actually activate the node */
2180           if (tree_view->priv->button_pressed_node->children == NULL)
2181             gtk_tree_view_real_expand_row (tree_view, path,
2182                                            tree_view->priv->button_pressed_tree,
2183                                            tree_view->priv->button_pressed_node,
2184                                            FALSE, TRUE);
2185           else
2186             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
2187                                              tree_view->priv->button_pressed_tree,
2188                                              tree_view->priv->button_pressed_node, TRUE);
2189           gtk_tree_path_free (path);
2190         }
2191
2192       tree_view->priv->button_pressed_tree = NULL;
2193       tree_view->priv->button_pressed_node = NULL;
2194     }
2195
2196   return TRUE;
2197 }
2198
2199
2200 /* GtkWidget::motion_event function set.
2201  */
2202
2203 static gboolean
2204 coords_are_over_arrow (GtkTreeView *tree_view,
2205                        GtkRBTree   *tree,
2206                        GtkRBNode   *node,
2207                        /* these are in window coords */
2208                        gint         x,
2209                        gint         y)
2210 {
2211   GdkRectangle arrow;
2212   gint x2;
2213
2214   if (!GTK_WIDGET_REALIZED (tree_view))
2215     return FALSE;
2216
2217   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
2218     return FALSE;
2219
2220   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
2221
2222   arrow.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2223
2224   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
2225
2226   arrow.width = x2 - arrow.x;
2227
2228   return (x >= arrow.x &&
2229           x < (arrow.x + arrow.width) &&
2230           y >= arrow.y &&
2231           y < (arrow.y + arrow.height));
2232 }
2233
2234 static void
2235 do_unprelight (GtkTreeView *tree_view,
2236                /* these are in tree window coords */
2237                gint x,
2238                gint y)
2239 {
2240   if (tree_view->priv->prelight_node == NULL)
2241     return;
2242
2243   GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
2244
2245   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2246       !coords_are_over_arrow (tree_view,
2247                               tree_view->priv->prelight_tree,
2248                               tree_view->priv->prelight_node,
2249                               x,
2250                               y))
2251     /* We need to unprelight the old arrow. */
2252     {
2253       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2254
2255       gtk_tree_view_draw_arrow (tree_view,
2256                                 tree_view->priv->prelight_tree,
2257                                 tree_view->priv->prelight_node,
2258                                 x,
2259                                 y);
2260
2261     }
2262
2263   tree_view->priv->prelight_node = NULL;
2264   tree_view->priv->prelight_tree = NULL;
2265 }
2266
2267 static void
2268 do_prelight (GtkTreeView *tree_view,
2269              GtkRBTree   *tree,
2270              GtkRBNode   *node,
2271              /* these are in tree_window coords */
2272              gint         x,
2273              gint         y)
2274 {
2275   if (coords_are_over_arrow (tree_view, tree, node, x, y))
2276     {
2277       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2278     }
2279
2280   tree_view->priv->prelight_node = node;
2281   tree_view->priv->prelight_tree = tree;
2282
2283   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
2284 }
2285
2286 static void
2287 ensure_unprelighted (GtkTreeView *tree_view)
2288 {
2289   do_unprelight (tree_view, -1000, -1000); /* coords not possibly over an arrow */
2290   g_assert (tree_view->priv->prelight_node == NULL);
2291 }
2292
2293
2294
2295
2296 /* Our motion arrow is either a box (in the case of the original spot)
2297  * or an arrow.  It is expander_size wide.
2298  */
2299 /*
2300  * 11111111111111
2301  * 01111111111110
2302  * 00111111111100
2303  * 00011111111000
2304  * 00001111110000
2305  * 00000111100000
2306  * 00000111100000
2307  * 00000111100000
2308  * ~ ~ ~ ~ ~ ~ ~
2309  * 00000111100000
2310  * 00000111100000
2311  * 00000111100000
2312  * 00001111110000
2313  * 00011111111000
2314  * 00111111111100
2315  * 01111111111110
2316  * 11111111111111
2317  */
2318
2319 static void
2320 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
2321 {
2322   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
2323   GtkWidget *widget = GTK_WIDGET (tree_view);
2324   GdkBitmap *mask = NULL;
2325   gint x;
2326   gint y;
2327   gint width;
2328   gint height;
2329   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
2330   GdkWindowAttr attributes;
2331   guint attributes_mask;
2332
2333   if (!reorder ||
2334       reorder->left_column == tree_view->priv->drag_column ||
2335       reorder->right_column == tree_view->priv->drag_column)
2336     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2337   else if (reorder->left_column || reorder->right_column)
2338     {
2339       GdkRectangle visible_rect;
2340       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2341       if (reorder->left_column)
2342         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
2343       else
2344         x = reorder->right_column->button->allocation.x;
2345
2346       if (x < visible_rect.x)
2347         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
2348       else if (x > visible_rect.x + visible_rect.width)
2349         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
2350       else
2351         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
2352     }
2353
2354   /* We want to draw the rectangle over the initial location. */
2355   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2356     {
2357       GdkGC *gc;
2358       GdkColor col;
2359
2360       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2361         {
2362           if (tree_view->priv->drag_highlight_window)
2363             {
2364               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2365                                         NULL);
2366               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2367             }
2368
2369           attributes.window_type = GDK_WINDOW_CHILD;
2370           attributes.wclass = GDK_INPUT_OUTPUT;
2371           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2372           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2373           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2374           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2375           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
2376           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2377
2378           width = tree_view->priv->drag_column->button->allocation.width;
2379           height = tree_view->priv->drag_column->button->allocation.height;
2380           gdk_window_move_resize (tree_view->priv->drag_highlight_window,
2381                                   tree_view->priv->drag_column_x, 0, width, height);
2382
2383           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2384           gc = gdk_gc_new (mask);
2385           col.pixel = 1;
2386           gdk_gc_set_foreground (gc, &col);
2387           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2388           col.pixel = 0;
2389           gdk_gc_set_foreground(gc, &col);
2390           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
2391           g_object_unref (gc);
2392
2393           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2394                                          mask, 0, 0);
2395           if (mask) g_object_unref (mask);
2396           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2397         }
2398     }
2399   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
2400     {
2401       gint i, j = 1;
2402       GdkGC *gc;
2403       GdkColor col;
2404
2405       width = tree_view->priv->expander_size;
2406
2407       /* Get x, y, width, height of arrow */
2408       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
2409       if (reorder->left_column)
2410         {
2411           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
2412           height = reorder->left_column->button->allocation.height;
2413         }
2414       else
2415         {
2416           x += reorder->right_column->button->allocation.x - width/2;
2417           height = reorder->right_column->button->allocation.height;
2418         }
2419       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
2420       height += tree_view->priv->expander_size;
2421
2422       /* Create the new window */
2423       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
2424         {
2425           if (tree_view->priv->drag_highlight_window)
2426             {
2427               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2428                                         NULL);
2429               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2430             }
2431
2432           attributes.window_type = GDK_WINDOW_TEMP;
2433           attributes.wclass = GDK_INPUT_OUTPUT;
2434           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2435           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2436           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2437           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2438           attributes.width = width;
2439           attributes.height = height;
2440           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
2441                                                                    &attributes, attributes_mask);
2442           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2443
2444           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2445           gc = gdk_gc_new (mask);
2446           col.pixel = 1;
2447           gdk_gc_set_foreground (gc, &col);
2448           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2449
2450           /* Draw the 2 arrows as per above */
2451           col.pixel = 0;
2452           gdk_gc_set_foreground (gc, &col);
2453           for (i = 0; i < width; i ++)
2454             {
2455               if (i == (width/2 - 1))
2456                 continue;
2457               gdk_draw_line (mask, gc, i, j, i, height - j);
2458               if (i < (width/2 - 1))
2459                 j++;
2460               else
2461                 j--;
2462             }
2463           g_object_unref (gc);
2464           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2465                                          mask, 0, 0);
2466           if (mask) g_object_unref (mask);
2467         }
2468
2469       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
2470       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2471     }
2472   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
2473            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2474     {
2475       gint i, j = 1;
2476       GdkGC *gc;
2477       GdkColor col;
2478
2479       width = tree_view->priv->expander_size;
2480
2481       /* Get x, y, width, height of arrow */
2482       width = width/2; /* remember, the arrow only takes half the available width */
2483       gdk_window_get_origin (widget->window, &x, &y);
2484       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2485         x += widget->allocation.width - width;
2486
2487       if (reorder->left_column)
2488         height = reorder->left_column->button->allocation.height;
2489       else
2490         height = reorder->right_column->button->allocation.height;
2491
2492       y -= tree_view->priv->expander_size;
2493       height += 2*tree_view->priv->expander_size;
2494
2495       /* Create the new window */
2496       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
2497           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2498         {
2499           if (tree_view->priv->drag_highlight_window)
2500             {
2501               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
2502                                         NULL);
2503               gdk_window_destroy (tree_view->priv->drag_highlight_window);
2504             }
2505
2506           attributes.window_type = GDK_WINDOW_TEMP;
2507           attributes.wclass = GDK_INPUT_OUTPUT;
2508           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2509           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2510           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2511           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2512           attributes.width = width;
2513           attributes.height = height;
2514           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2515           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2516
2517           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2518           gc = gdk_gc_new (mask);
2519           col.pixel = 1;
2520           gdk_gc_set_foreground (gc, &col);
2521           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2522
2523           /* Draw the 2 arrows as per above */
2524           col.pixel = 0;
2525           gdk_gc_set_foreground (gc, &col);
2526           j = tree_view->priv->expander_size;
2527           for (i = 0; i < width; i ++)
2528             {
2529               gint k;
2530               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
2531                 k = width - i - 1;
2532               else
2533                 k = i;
2534               gdk_draw_line (mask, gc, k, j, k, height - j);
2535               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
2536               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
2537               j--;
2538             }
2539           g_object_unref (gc);
2540           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2541                                          mask, 0, 0);
2542           if (mask) g_object_unref (mask);
2543         }
2544
2545       tree_view->priv->drag_column_window_state = arrow_type;
2546       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2547    }
2548   else
2549     {
2550       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
2551       gdk_window_hide (tree_view->priv->drag_highlight_window);
2552       return;
2553     }
2554
2555   gdk_window_show (tree_view->priv->drag_highlight_window);
2556   gdk_window_raise (tree_view->priv->drag_highlight_window);
2557 }
2558
2559 static gboolean
2560 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
2561                                     GdkEventMotion *event)
2562 {
2563   gint x;
2564   gint new_width;
2565   GtkTreeViewColumn *column;
2566   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2567
2568   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
2569
2570   if (event->is_hint || event->window != widget->window)
2571     gtk_widget_get_pointer (widget, &x, NULL);
2572   else
2573     x = event->x;
2574
2575   if (tree_view->priv->hadjustment)
2576     x += tree_view->priv->hadjustment->value;
2577
2578   new_width = gtk_tree_view_new_column_width (tree_view,
2579                                               tree_view->priv->drag_pos, &x);
2580   if (x != tree_view->priv->x_drag &&
2581       (new_width != column->fixed_width));
2582     {
2583       column->resized_width = new_width;
2584       gtk_widget_queue_resize (widget);
2585     }
2586
2587   return FALSE;
2588 }
2589
2590
2591 static void
2592 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
2593 {
2594   GtkTreeViewColumnReorder *reorder = NULL;
2595   GList *list;
2596   gint mouse_x;
2597
2598   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
2599
2600   for (list = tree_view->priv->column_drag_info; list; list = list->next)
2601     {
2602       reorder = (GtkTreeViewColumnReorder *) list->data;
2603       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
2604         break;
2605       reorder = NULL;
2606     }
2607
2608   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
2609       return;*/
2610
2611   tree_view->priv->cur_reorder = reorder;
2612   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
2613 }
2614
2615 static void
2616 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
2617 {
2618   GdkRectangle visible_rect;
2619   gint y;
2620   gint offset;
2621   gfloat value;
2622
2623   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
2624   y += tree_view->priv->dy;
2625
2626   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2627
2628   /* see if we are near the edge. */
2629   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
2630   if (offset > 0)
2631     {
2632       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
2633       if (offset < 0)
2634         return;
2635     }
2636
2637   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
2638                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
2639   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
2640 }
2641
2642 static gboolean
2643 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
2644 {
2645   GdkRectangle visible_rect;
2646   gint x;
2647   gint offset;
2648   gfloat value;
2649
2650   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
2651
2652   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2653
2654   /* See if we are near the edge. */
2655   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
2656   if (offset > 0)
2657     {
2658       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
2659       if (offset < 0)
2660         return TRUE;
2661     }
2662   offset = offset/3;
2663
2664   value = CLAMP (tree_view->priv->hadjustment->value + offset,
2665                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
2666   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
2667
2668   return TRUE;
2669
2670 }
2671
2672 static gboolean
2673 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
2674                                   GdkEventMotion *event)
2675 {
2676   GtkTreeView *tree_view = (GtkTreeView *) widget;
2677   GtkTreeViewColumn *column = tree_view->priv->drag_column;
2678   gint x, y;
2679
2680   /* Sanity Check */
2681   if ((column == NULL) ||
2682       (event->window != tree_view->priv->drag_window))
2683     return FALSE;
2684
2685   /* Handle moving the header */
2686   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
2687   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
2688              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
2689   gdk_window_move (tree_view->priv->drag_window, x, y);
2690
2691   /* autoscroll, if needed */
2692   gtk_tree_view_horizontal_autoscroll (tree_view);
2693   /* Update the current reorder position and arrow; */
2694   gtk_tree_view_update_current_reorder (tree_view);
2695
2696   return TRUE;
2697 }
2698
2699 static gboolean
2700 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
2701                                  GdkEventMotion *event)
2702 {
2703   GtkTreeView *tree_view;
2704   GtkRBTree *tree;
2705   GtkRBNode *node;
2706   gint new_y;
2707   GtkRBTree *old_prelight_tree;
2708   GtkRBNode *old_prelight_node;
2709   gboolean old_arrow_prelit;
2710
2711   tree_view = (GtkTreeView *) widget;
2712
2713   if (tree_view->priv->tree == NULL)
2714     return FALSE;
2715
2716   gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
2717
2718   old_prelight_tree = tree_view->priv->prelight_tree;
2719   old_prelight_node = tree_view->priv->prelight_node;
2720   old_arrow_prelit = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2721
2722   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2723   if (new_y < 0)
2724     new_y = 0;
2725   do_unprelight (tree_view, event->x, event->y);
2726   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2727
2728   if (tree == NULL)
2729     return TRUE;
2730
2731   /* If we are currently pressing down a button, we don't want to prelight anything else. */
2732   if ((tree_view->priv->button_pressed_node != NULL) &&
2733       (tree_view->priv->button_pressed_node != node))
2734     return TRUE;
2735
2736
2737   do_prelight (tree_view, tree, node, event->x, event->y);
2738
2739   if (old_prelight_node != tree_view->priv->prelight_node)
2740     {
2741       if (old_prelight_node)
2742         {
2743           _gtk_tree_view_queue_draw_node (tree_view,
2744                                           old_prelight_tree,
2745                                           old_prelight_node,
2746                                           NULL);
2747         }
2748       if (tree_view->priv->prelight_node)
2749         {
2750           _gtk_tree_view_queue_draw_node (tree_view,
2751                                           tree_view->priv->prelight_tree,
2752                                           tree_view->priv->prelight_node,
2753                                           NULL);
2754         }
2755     }
2756   else if (old_arrow_prelit != GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2757     {
2758       if (tree_view->priv->prelight_node)
2759         {
2760           _gtk_tree_view_queue_draw_node (tree_view,
2761                                          tree_view->priv->prelight_tree,
2762                                          tree_view->priv->prelight_node,
2763                                          NULL);
2764         }
2765     }
2766   return TRUE;
2767 }
2768
2769 static gboolean
2770 gtk_tree_view_motion (GtkWidget      *widget,
2771                       GdkEventMotion *event)
2772 {
2773   GtkTreeView *tree_view;
2774
2775   tree_view = (GtkTreeView *) widget;
2776
2777   /* Resizing a column */
2778   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2779     return gtk_tree_view_motion_resize_column (widget, event);
2780
2781   /* Drag column */
2782   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2783     return gtk_tree_view_motion_drag_column (widget, event);
2784
2785   /* Sanity check it */
2786   if (event->window == tree_view->priv->bin_window)
2787     return gtk_tree_view_motion_bin_window (widget, event);
2788
2789   return FALSE;
2790 }
2791
2792 /* Warning: Very scary function.
2793  * Modify at your own risk
2794  *
2795  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
2796  * FIXME: It's not...
2797  */
2798 static gboolean
2799 gtk_tree_view_bin_expose (GtkWidget      *widget,
2800                           GdkEventExpose *event)
2801 {
2802   GtkTreeView *tree_view;
2803   GtkTreePath *path;
2804   GtkRBTree *tree;
2805   GList *list;
2806   GtkRBNode *node;
2807   GtkRBNode *cursor = NULL;
2808   GtkRBTree *cursor_tree = NULL;
2809   GtkRBNode *drag_highlight = NULL;
2810   GtkRBTree *drag_highlight_tree = NULL;
2811   GtkTreeIter iter;
2812   gint new_y;
2813   gint y_offset, x_offset, cell_offset;
2814   gint max_height;
2815   gint depth;
2816   GdkRectangle background_area;
2817   GdkRectangle cell_area;
2818   guint flags;
2819   gint highlight_x;
2820   gint bin_window_width;
2821   GtkTreePath *cursor_path;
2822   GtkTreePath *drag_dest_path;
2823   GList *last_column;
2824   gint vertical_separator;
2825   gint horizontal_separator;
2826   gint focus_line_width;
2827   gboolean allow_rules;
2828   gboolean has_special_cell;
2829
2830   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2831
2832   tree_view = GTK_TREE_VIEW (widget);
2833
2834   gtk_widget_style_get (widget,
2835                         "horizontal_separator", &horizontal_separator,
2836                         "vertical_separator", &vertical_separator,
2837                         "allow_rules", &allow_rules,
2838                         "focus-line-width", &focus_line_width,
2839                         NULL);
2840
2841   if (tree_view->priv->tree == NULL)
2842     return TRUE;
2843
2844   /* clip event->area to the visible area */
2845   if (event->area.height < 0)
2846     return TRUE;
2847
2848   validate_visible_area (tree_view);
2849
2850   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
2851
2852   if (new_y < 0)
2853     new_y = 0;
2854   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2855
2856   if (node == NULL)
2857     return TRUE;
2858
2859   /* find the path for the node */
2860   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
2861                                    tree,
2862                                    node);
2863   gtk_tree_model_get_iter (tree_view->priv->model,
2864                            &iter,
2865                            path);
2866   depth = gtk_tree_path_get_depth (path);
2867   gtk_tree_path_free (path);
2868
2869   cursor_path = NULL;
2870   drag_dest_path = NULL;
2871
2872   if (tree_view->priv->cursor)
2873     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
2874
2875   if (cursor_path)
2876     _gtk_tree_view_find_node (tree_view, cursor_path,
2877                               &cursor_tree, &cursor);
2878
2879   if (tree_view->priv->drag_dest_row)
2880     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
2881
2882   if (drag_dest_path)
2883     _gtk_tree_view_find_node (tree_view, drag_dest_path,
2884                               &drag_highlight_tree, &drag_highlight);
2885
2886   gdk_drawable_get_size (tree_view->priv->bin_window,
2887                          &bin_window_width, NULL);
2888
2889   for (last_column = g_list_last (tree_view->priv->columns);
2890        last_column &&
2891          !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
2892          GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
2893        last_column = last_column->prev)
2894     ;
2895
2896   /* Actually process the expose event.  To do this, we want to
2897    * start at the first node of the event, and walk the tree in
2898    * order, drawing each successive node.
2899    */
2900
2901   do
2902     {
2903       gboolean parity;
2904
2905       max_height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2906
2907       x_offset = -event->area.x;
2908       cell_offset = 0;
2909       highlight_x = 0; /* should match x coord of first cell */
2910
2911       background_area.y = y_offset + event->area.y;
2912       background_area.height = max_height;
2913
2914       flags = 0;
2915
2916       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
2917         flags |= GTK_CELL_RENDERER_PRELIT;
2918
2919       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
2920         flags |= GTK_CELL_RENDERER_SELECTED;
2921
2922       parity = _gtk_rbtree_node_find_parity (tree, node);
2923
2924       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
2925
2926       for (list = tree_view->priv->columns; list; list = list->next)
2927         {
2928           GtkTreeViewColumn *column = list->data;
2929           const gchar *detail = NULL;
2930           GtkStateType state;
2931
2932           if (!column->visible)
2933             continue;
2934
2935           if (cell_offset > event->area.x + event->area.width ||
2936               cell_offset + column->width < event->area.x)
2937             {
2938               cell_offset += column->width;
2939               continue;
2940             }
2941
2942           if (column->show_sort_indicator)
2943             flags |= GTK_CELL_RENDERER_SORTED;
2944           else
2945             flags &= ~GTK_CELL_RENDERER_SORTED;
2946
2947           background_area.x = cell_offset;
2948           background_area.width = column->width;
2949
2950           cell_area = background_area;
2951           cell_area.y += vertical_separator / 2;
2952           cell_area.x += horizontal_separator / 2;
2953           cell_area.height -= vertical_separator;
2954           cell_area.width -= horizontal_separator;
2955
2956           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
2957             {
2958               cell_offset += column->width;
2959               continue;
2960             }
2961
2962           gtk_tree_view_column_cell_set_cell_data (column,
2963                                                    tree_view->priv->model,
2964                                                    &iter,
2965                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2966                                                    node->children?TRUE:FALSE);
2967
2968           /* Select the detail for drawing the cell.  relevant
2969            * factors are parity, sortedness, and whether to
2970            * display rules.
2971            */
2972           if (allow_rules && tree_view->priv->has_rules)
2973             {
2974               if (flags & GTK_CELL_RENDERER_SORTED)
2975                 {
2976                   if (parity)
2977                     detail = "cell_odd_ruled_sorted";
2978                   else
2979                     detail = "cell_even_ruled_sorted";
2980                 }
2981               else
2982                 {
2983                   if (parity)
2984                     detail = "cell_odd_ruled";
2985                   else
2986                     detail = "cell_even_ruled";
2987                 }
2988             }
2989           else
2990             {
2991               if (flags & GTK_CELL_RENDERER_SORTED)
2992                 {
2993                   if (parity)
2994                     detail = "cell_odd_sorted";
2995                   else
2996                     detail = "cell_even_sorted";
2997                 }
2998               else
2999                 {
3000                   if (parity)
3001                     detail = "cell_odd";
3002                   else
3003                     detail = "cell_even";
3004                 }
3005             }
3006
3007           g_assert (detail);
3008
3009           if (flags & GTK_CELL_RENDERER_SELECTED)
3010             state = GTK_STATE_SELECTED;
3011           else
3012             state = GTK_STATE_NORMAL;
3013
3014           /* Draw background */
3015           gtk_paint_flat_box (widget->style,
3016                               event->window,
3017                               state,
3018                               GTK_SHADOW_NONE,
3019                               &event->area,
3020                               widget,
3021                               detail,
3022                               background_area.x,
3023                               background_area.y,
3024                               background_area.width,
3025                               background_area.height);
3026
3027           if (gtk_tree_view_is_expander_column (tree_view, column) &&
3028               TREE_VIEW_DRAW_EXPANDERS(tree_view))
3029             {
3030               cell_area.x += depth * tree_view->priv->expander_size;
3031               cell_area.width -= depth * tree_view->priv->expander_size;
3032
3033               /* If we have an expander column, the highlight underline
3034                * starts with that column, so that it indicates which
3035                * level of the tree we're dropping at.
3036                */
3037               highlight_x = cell_area.x;
3038               _gtk_tree_view_column_cell_render (column,
3039                                                  event->window,
3040                                                  &background_area,
3041                                                  &cell_area,
3042                                                  &event->area,
3043                                                  flags);
3044               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
3045                 {
3046                   gint x, y;
3047                   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
3048                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
3049                                             tree,
3050                                             node,
3051                                             x, y);
3052                 }
3053             }
3054           else
3055             {
3056               _gtk_tree_view_column_cell_render (column,
3057                                                  event->window,
3058                                                  &background_area,
3059                                                  &cell_area,
3060                                                  &event->area,
3061                                                  flags);
3062             }
3063           if (node == cursor && has_special_cell &&
3064               ((column == tree_view->priv->focus_column &&
3065                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
3066                 GTK_WIDGET_HAS_FOCUS (widget)) ||
3067                (column == tree_view->priv->edited_column)))
3068             {
3069               _gtk_tree_view_column_cell_draw_focus (column,
3070                                                      event->window,
3071                                                      &background_area,
3072                                                      &cell_area,
3073                                                      &event->area,
3074                                                      flags);
3075             }
3076           cell_offset += column->width;
3077         }
3078
3079       if (node == drag_highlight)
3080         {
3081           /* Draw indicator for the drop
3082            */
3083           gint highlight_y = -1;
3084           GtkRBTree *tree = NULL;
3085           GtkRBNode *node = NULL;
3086           gint width;
3087           gint focus_line_width;
3088
3089           switch (tree_view->priv->drag_dest_pos)
3090             {
3091             case GTK_TREE_VIEW_DROP_BEFORE:
3092               highlight_y = background_area.y - 1;
3093               if (highlight_y < 0)
3094                       highlight_y = 0;
3095               break;
3096
3097             case GTK_TREE_VIEW_DROP_AFTER:
3098               highlight_y = background_area.y + background_area.height - 1;
3099               break;
3100
3101             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
3102             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
3103               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
3104
3105               if (tree == NULL)
3106                 break;
3107               gdk_drawable_get_size (tree_view->priv->bin_window,
3108                                      &width, NULL);
3109               gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL);
3110               gtk_paint_focus (widget->style,
3111                                tree_view->priv->bin_window,
3112                                GTK_WIDGET_STATE (widget),
3113                                NULL,
3114                                widget,
3115                                "treeview-drop-indicator",
3116                                0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
3117                                - focus_line_width / 2,
3118                                width, MAX(BACKGROUND_HEIGHT (node),
3119                                           tree_view->priv->expander_size)
3120                                - focus_line_width + 1);
3121               break;
3122             }
3123
3124           if (highlight_y >= 0)
3125             {
3126               gdk_draw_line (event->window,
3127                              widget->style->black_gc,
3128                              highlight_x,
3129                              highlight_y,
3130                              bin_window_width - highlight_x,
3131                              highlight_y);
3132             }
3133         }
3134
3135       /* draw the big row-spanning focus rectangle, if needed */
3136       if (!has_special_cell && node == cursor &&
3137           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
3138           GTK_WIDGET_HAS_FOCUS (widget))
3139         {
3140           gint width;
3141           GtkStateType focus_rect_state;
3142
3143           focus_rect_state =
3144             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
3145             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
3146              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
3147               GTK_STATE_NORMAL));
3148
3149           gdk_drawable_get_size (tree_view->priv->bin_window,
3150                                  &width, NULL);
3151           gtk_paint_focus (widget->style,
3152                            tree_view->priv->bin_window,
3153                            focus_rect_state,
3154                            NULL,
3155                            widget,
3156                            "treeview",
3157                            0,
3158                            BACKGROUND_FIRST_PIXEL (tree_view, tree, node),
3159                            width,
3160                            MAX (BACKGROUND_HEIGHT (node),
3161                                 tree_view->priv->expander_size));
3162         }
3163
3164       y_offset += max_height;
3165       if (node->children)
3166         {
3167           GtkTreeIter parent = iter;
3168           gboolean has_child;
3169
3170           tree = node->children;
3171           node = tree->root;
3172
3173           g_assert (node != tree->nil);
3174
3175           while (node->left != tree->nil)
3176             node = node->left;
3177           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3178                                                     &iter,
3179                                                     &parent);
3180           depth++;
3181
3182           /* Sanity Check! */
3183           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
3184         }
3185       else
3186         {
3187           gboolean done = FALSE;
3188           do
3189             {
3190               node = _gtk_rbtree_next (tree, node);
3191               if (node != NULL)
3192                 {
3193                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3194                   done = TRUE;
3195
3196                   /* Sanity Check! */
3197                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
3198                 }
3199               else
3200                 {
3201                   GtkTreeIter parent_iter = iter;
3202                   gboolean has_parent;
3203
3204                   node = tree->parent_node;
3205                   tree = tree->parent_tree;
3206                   if (tree == NULL)
3207                     /* we should go to done to free some memory */
3208                     goto done;
3209                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3210                                                            &iter,
3211                                                            &parent_iter);
3212                   depth--;
3213
3214                   /* Sanity check */
3215                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
3216                 }
3217             }
3218           while (!done);
3219         }
3220     }
3221   while (y_offset < event->area.height);
3222
3223  done:
3224   if (cursor_path)
3225     gtk_tree_path_free (cursor_path);
3226
3227   if (drag_dest_path)
3228     gtk_tree_path_free (drag_dest_path);
3229
3230   return FALSE;
3231 }
3232
3233 static gboolean
3234 gtk_tree_view_expose (GtkWidget      *widget,
3235                       GdkEventExpose *event)
3236 {
3237   GtkTreeView *tree_view;
3238
3239   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3240
3241   tree_view = GTK_TREE_VIEW (widget);
3242
3243   if (event->window == tree_view->priv->bin_window)
3244     return gtk_tree_view_bin_expose (widget, event);
3245   else if (event->window == tree_view->priv->header_window)
3246     {
3247       GList *list;
3248
3249       for (list = tree_view->priv->columns; list != NULL; list = list->next)
3250         {
3251           GtkTreeViewColumn *column = list->data;
3252
3253           if (column == tree_view->priv->drag_column)
3254             continue;
3255
3256           if (column->visible)
3257             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3258                                             column->button,
3259                                             event);
3260         }
3261     }
3262   else if (event->window == tree_view->priv->drag_window)
3263     {
3264       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3265                                       tree_view->priv->drag_column->button,
3266                                       event);
3267     }
3268   return TRUE;
3269 }
3270
3271 enum
3272 {
3273   DROP_HOME,
3274   DROP_RIGHT,
3275   DROP_LEFT,
3276   DROP_END
3277 };
3278
3279 /* returns 0x1 when no column has been found -- yes it's hackish */
3280 static GtkTreeViewColumn *
3281 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
3282                                GtkTreeViewColumn *column,
3283                                gint               drop_position)
3284 {
3285   GtkTreeViewColumn *left_column = NULL;
3286   GtkTreeViewColumn *cur_column = NULL;
3287   GList *tmp_list;
3288
3289   if (!column->reorderable)
3290     return (GtkTreeViewColumn *)0x1;
3291
3292   switch (drop_position)
3293     {
3294       case DROP_HOME:
3295         /* find first column where we can drop */
3296         tmp_list = tree_view->priv->columns;
3297         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3298           return (GtkTreeViewColumn *)0x1;
3299
3300         while (tmp_list)
3301           {
3302             g_assert (tmp_list);
3303
3304             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3305             tmp_list = tmp_list->next;
3306
3307             if (left_column && left_column->visible == FALSE)
3308               continue;
3309
3310             if (!tree_view->priv->column_drop_func)
3311               return left_column;
3312
3313             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3314               {
3315                 left_column = cur_column;
3316                 continue;
3317               }
3318
3319             return cur_column;
3320           }
3321
3322         if (!tree_view->priv->column_drop_func)
3323           return left_column;
3324
3325         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3326           return left_column;
3327         else
3328           return (GtkTreeViewColumn *)0x1;
3329         break;
3330
3331       case DROP_RIGHT:
3332         /* find first column after column where we can drop */
3333         tmp_list = tree_view->priv->columns;
3334
3335         for (; tmp_list; tmp_list = tmp_list->next)
3336           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3337             break;
3338
3339         if (!tmp_list || !tmp_list->next)
3340           return (GtkTreeViewColumn *)0x1;
3341
3342         tmp_list = tmp_list->next;
3343         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3344         tmp_list = tmp_list->next;
3345
3346         while (tmp_list)
3347           {
3348             g_assert (tmp_list);
3349
3350             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3351             tmp_list = tmp_list->next;
3352
3353             if (left_column && left_column->visible == FALSE)
3354               {
3355                 left_column = cur_column;
3356                 if (tmp_list)
3357                   tmp_list = tmp_list->next;
3358                 continue;
3359               }
3360
3361             if (!tree_view->priv->column_drop_func)
3362               return left_column;
3363
3364             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3365               {
3366                 left_column = cur_column;
3367                 continue;
3368               }
3369
3370             return cur_column;
3371           }
3372
3373         if (!tree_view->priv->column_drop_func)
3374           return left_column;
3375
3376         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3377           return left_column;
3378         else
3379           return (GtkTreeViewColumn *)0x1;
3380         break;
3381
3382       case DROP_LEFT:
3383         /* find first column before column where we can drop */
3384         tmp_list = tree_view->priv->columns;
3385
3386         for (; tmp_list; tmp_list = tmp_list->next)
3387           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3388             break;
3389
3390         if (!tmp_list || !tmp_list->prev)
3391           return (GtkTreeViewColumn *)0x1;
3392
3393         tmp_list = tmp_list->prev;
3394         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3395         tmp_list = tmp_list->prev;
3396
3397         while (tmp_list)
3398           {
3399             g_assert (tmp_list);
3400
3401             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3402
3403             if (left_column && !left_column->visible)
3404               {
3405                 /*if (!tmp_list->prev)
3406                   return (GtkTreeViewColumn *)0x1;
3407                   */
3408 /*
3409                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
3410                 tmp_list = tmp_list->prev->prev;
3411                 continue;*/
3412
3413                 cur_column = left_column;
3414                 if (tmp_list)
3415                   tmp_list = tmp_list->prev;
3416                 continue;
3417               }
3418
3419             if (!tree_view->priv->column_drop_func)
3420               return left_column;
3421
3422             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3423               return left_column;
3424
3425             cur_column = left_column;
3426             tmp_list = tmp_list->prev;
3427           }
3428
3429         if (!tree_view->priv->column_drop_func)
3430           return NULL;
3431
3432         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3433           return NULL;
3434         else
3435           return (GtkTreeViewColumn *)0x1;
3436         break;
3437
3438       case DROP_END:
3439         /* same as DROP_HOME case, but doing it backwards */
3440         tmp_list = g_list_last (tree_view->priv->columns);
3441         cur_column = NULL;
3442
3443         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3444           return (GtkTreeViewColumn *)0x1;
3445
3446         while (tmp_list)
3447           {
3448             g_assert (tmp_list);
3449
3450             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3451
3452             if (left_column && !left_column->visible)
3453               {
3454                 cur_column = left_column;
3455                 tmp_list = tmp_list->prev;
3456               }
3457
3458             if (!tree_view->priv->column_drop_func)
3459               return left_column;
3460
3461             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3462               return left_column;
3463
3464             cur_column = left_column;
3465             tmp_list = tmp_list->prev;
3466           }
3467
3468         if (!tree_view->priv->column_drop_func)
3469           return NULL;
3470
3471         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3472           return NULL;
3473         else
3474           return (GtkTreeViewColumn *)0x1;
3475         break;
3476     }
3477
3478   return (GtkTreeViewColumn *)0x1;
3479 }
3480
3481 static gboolean
3482 gtk_tree_view_key_press (GtkWidget   *widget,
3483                          GdkEventKey *event)
3484 {
3485   GtkTreeView *tree_view = (GtkTreeView *) widget;
3486   GList *list;
3487
3488   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3489     {
3490       if (event->keyval == GDK_Escape)
3491         {
3492           tree_view->priv->cur_reorder = NULL;
3493           gtk_tree_view_button_release_drag_column (widget, NULL);
3494         }
3495       return TRUE;
3496     }
3497
3498   /* FIXME: this is prolly broken when we go bidi */
3499   if (tree_view->priv->columns && (event->state & GDK_SHIFT_MASK)
3500       && (event->keyval == GDK_Left || event->keyval == GDK_Right))
3501     {
3502       list = tree_view->priv->columns;
3503       while (list)
3504         {
3505           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3506           if (GTK_WIDGET_HAS_FOCUS (column->button))
3507             {
3508               if (!column->resizable)
3509                 return TRUE;
3510
3511               if (event->keyval == GDK_Left)
3512                 {
3513                   column->resized_width = MAX (column->resized_width,
3514                                                column->width);
3515                   column->resized_width -= 2;
3516                   if (column->resized_width < 0)
3517                     column->resized_width = 0;
3518
3519                   if (column->min_width == -1)
3520                     column->resized_width = MAX (column->button->requisition.width, column->resized_width);
3521                   else
3522                     column->resized_width = MAX (column->min_width, column->resized_width);
3523
3524                   if (column->max_width != -1)
3525                     column->resized_width = MIN (column->resized_width, column->max_width);
3526
3527                   column->use_resized_width = TRUE;
3528                   gtk_widget_queue_resize (widget);
3529                   return TRUE;
3530                 }
3531               else if (event->keyval == GDK_Right)
3532                 {
3533                   column->resized_width = MAX (column->resized_width,
3534                                                column->width);
3535                   column->resized_width += 2;
3536
3537                   if (column->max_width != -1)
3538                     column->resized_width = MIN (column->resized_width, column->max_width);
3539
3540                   column->use_resized_width = TRUE;
3541                   gtk_widget_queue_resize (widget);
3542                   return TRUE;
3543                 }
3544             }
3545           list = list->next;
3546         }
3547     }
3548
3549   /* FIXME: broken when we go bidi? */
3550   if (tree_view->priv->columns && (event->state & GDK_CONTROL_MASK) &&
3551       (event->keyval == GDK_Left || event->keyval == GDK_Right
3552        || event->keyval == GDK_Home || event->keyval == GDK_End))
3553     {
3554       list = tree_view->priv->columns;
3555       while (list)
3556         {
3557           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3558           if (GTK_WIDGET_HAS_FOCUS (column->button))
3559             {
3560               if (event->keyval == GDK_Left)
3561                 {
3562                   GtkTreeViewColumn *col;
3563                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
3564                   if (col != (GtkTreeViewColumn *)0x1)
3565                     gtk_tree_view_move_column_after (tree_view, column, col);
3566                   return TRUE;
3567                 }
3568               else if (event->keyval == GDK_Right)
3569                 {
3570                   GtkTreeViewColumn *col;
3571                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
3572                   if (col != (GtkTreeViewColumn *)0x1)
3573                     gtk_tree_view_move_column_after (tree_view, column, col);
3574                   return TRUE;
3575                 }
3576               else if (event->keyval == GDK_Home)
3577                 {
3578                   GtkTreeViewColumn *col;
3579                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
3580                   if (col != (GtkTreeViewColumn *)0x1)
3581                     gtk_tree_view_move_column_after (tree_view, column, col);
3582                   return TRUE;
3583                 }
3584               else if (event->keyval == GDK_End)
3585                 {
3586                   GtkTreeViewColumn *col;
3587                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
3588                   if (col != (GtkTreeViewColumn *)0x1)
3589                     gtk_tree_view_move_column_after (tree_view, column, col);
3590                   return TRUE;
3591                 }
3592             }
3593           list = list->next;
3594         }
3595     }
3596
3597   /* FIXME: this is prolly broken when we go bidi */
3598   if (tree_view->priv->columns &&
3599       (event->keyval == GDK_Left || event->keyval == GDK_Right))
3600     {
3601       gint width = 0;
3602       list = tree_view->priv->columns;
3603       while (list)
3604         {
3605           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3606           if (GTK_WIDGET_HAS_FOCUS (column->button))
3607             {
3608               if (event->keyval == GDK_Left && list->prev)
3609                 {
3610                   GList *tmp;
3611
3612                   for (tmp = list->prev; tmp; tmp = tmp->prev)
3613                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3614                       break;
3615
3616                   if (!tmp)
3617                     return FALSE;
3618
3619                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3620                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3621                   width -= tree_view->priv->focus_column->width;
3622                   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));
3623                   return TRUE;
3624                 }
3625               else if (event->keyval == GDK_Right && list->next)
3626                 {
3627                   GList *tmp;
3628
3629                   for (tmp = list->next; tmp; tmp = tmp->next)
3630                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3631                       break;
3632
3633                   if (!tmp)
3634                     return FALSE;
3635
3636                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3637
3638                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3639                   width += tree_view->priv->focus_column->width;
3640                   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));
3641                   return TRUE;
3642                 }
3643             }
3644           width += GTK_TREE_VIEW_COLUMN (list->data)->width;
3645           list = list->next;
3646         }
3647     }
3648
3649   return (* GTK_WIDGET_CLASS (parent_class)->key_press_event) (widget, event);
3650 }
3651
3652 /* FIXME Is this function necessary? Can I get an enter_notify event
3653  * w/o either an expose event or a mouse motion event?
3654  */
3655 static gboolean
3656 gtk_tree_view_enter_notify (GtkWidget        *widget,
3657                             GdkEventCrossing *event)
3658 {
3659   GtkTreeView *tree_view;
3660   GtkRBTree *tree;
3661   GtkRBNode *node;
3662   gint new_y;
3663
3664   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3665
3666   tree_view = GTK_TREE_VIEW (widget);
3667
3668   /* Sanity check it */
3669   if (event->window != tree_view->priv->bin_window)
3670     return FALSE;
3671
3672   if (tree_view->priv->tree == NULL)
3673     return FALSE;
3674
3675   if ((tree_view->priv->button_pressed_node != NULL) &&
3676       (tree_view->priv->button_pressed_node != node))
3677     return TRUE;
3678
3679   /* find the node internally */
3680   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
3681   if (new_y < 0)
3682     new_y = 0;
3683   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
3684
3685   if (node == NULL)
3686     return FALSE;
3687
3688   do_prelight (tree_view, tree, node, event->x, event->y);
3689
3690   if (tree_view->priv->prelight_node)
3691     _gtk_tree_view_queue_draw_node (tree_view,
3692                                    tree_view->priv->prelight_tree,
3693                                    tree_view->priv->prelight_node,
3694                                    NULL);
3695
3696   return TRUE;
3697 }
3698
3699 static gboolean
3700 gtk_tree_view_leave_notify (GtkWidget        *widget,
3701                             GdkEventCrossing *event)
3702 {
3703   GtkTreeView *tree_view;
3704
3705   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3706
3707   if (event->mode == GDK_CROSSING_GRAB)
3708     return TRUE;
3709   tree_view = GTK_TREE_VIEW (widget);
3710
3711   if (tree_view->priv->prelight_node)
3712     _gtk_tree_view_queue_draw_node (tree_view,
3713                                    tree_view->priv->prelight_tree,
3714                                    tree_view->priv->prelight_node,
3715                                    NULL);
3716
3717   ensure_unprelighted (tree_view);
3718
3719   return TRUE;
3720 }
3721
3722
3723 static gint
3724 gtk_tree_view_focus_out (GtkWidget     *widget,
3725                          GdkEventFocus *event)
3726 {
3727   GtkWidget   *search_dialog;
3728
3729   gtk_widget_queue_draw (widget);
3730
3731   /* destroy interactive search dialog */
3732   search_dialog = g_object_get_data (G_OBJECT (widget),
3733                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
3734   if (search_dialog)
3735     gtk_tree_view_search_dialog_destroy (search_dialog, GTK_TREE_VIEW (widget));
3736
3737   return FALSE;
3738 }
3739
3740
3741 /* Incremental Reflow
3742  */
3743
3744 /* Returns TRUE if it updated the size
3745  */
3746 static gboolean
3747 validate_row (GtkTreeView *tree_view,
3748               GtkRBTree   *tree,
3749               GtkRBNode   *node,
3750               GtkTreeIter *iter,
3751               GtkTreePath *path)
3752 {
3753   GtkTreeViewColumn *column;
3754   GList *list;
3755   gint height = 0;
3756   gint horizontal_separator;
3757   gint depth = gtk_tree_path_get_depth (path);
3758   gboolean retval = FALSE;
3759
3760   /* double check the row needs validating */
3761   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
3762       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3763     return FALSE;
3764
3765   gtk_widget_style_get (GTK_WIDGET (tree_view),
3766                         "horizontal_separator", &horizontal_separator,
3767                         NULL);
3768
3769   for (list = tree_view->priv->columns; list; list = list->next)
3770     {
3771       gint tmp_width;
3772       gint tmp_height;
3773
3774       column = list->data;
3775
3776       if (! column->visible)
3777         continue;
3778
3779       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
3780         continue;
3781
3782       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
3783                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3784                                                node->children?TRUE:FALSE);
3785       gtk_tree_view_column_cell_get_size (column,
3786                                           NULL, NULL, NULL,
3787                                           &tmp_width, &tmp_height);
3788
3789       height = MAX (height, tmp_height);
3790       height = MAX (height, tree_view->priv->expander_size);
3791
3792       if (gtk_tree_view_is_expander_column (tree_view, column) && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3793         {
3794           tmp_width = tmp_width + horizontal_separator + depth * (tree_view->priv->expander_size);
3795         }
3796       else
3797         tmp_width = tmp_width + horizontal_separator;
3798
3799       if (tmp_width > column->requested_width)
3800         {
3801           retval = TRUE;
3802           column->requested_width = tmp_width;
3803         }
3804     }
3805
3806   if (height != GTK_RBNODE_GET_HEIGHT (node))
3807     {
3808       retval = TRUE;
3809       _gtk_rbtree_node_set_height (tree, node, height);
3810     }
3811   _gtk_rbtree_node_mark_valid (tree, node);
3812
3813   return retval;
3814 }
3815
3816
3817 static void
3818 validate_visible_area (GtkTreeView *tree_view)
3819 {
3820   GtkTreePath *path = NULL;
3821   GtkTreePath *above_path = NULL;
3822   GtkTreeIter iter;
3823   GtkRBTree *tree = NULL;
3824   GtkRBNode *node = NULL;
3825   gboolean need_redraw = FALSE;
3826   gboolean size_changed = FALSE;
3827   gboolean modify_dy = FALSE;
3828   gint total_height;
3829   gint area_above = 0;
3830   gint area_below = 0;
3831
3832   if (tree_view->priv->tree == NULL)
3833     return;
3834
3835   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
3836       tree_view->priv->scroll_to_path == NULL)
3837     return;
3838
3839   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
3840
3841   if (total_height == 0)
3842     return;
3843
3844   /* First, we check to see if we need to scroll anywhere
3845    */
3846   if (tree_view->priv->scroll_to_path)
3847     {
3848       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
3849       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
3850         {
3851           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3852           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3853               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3854             {
3855               need_redraw = TRUE;
3856               if (validate_row (tree_view, tree, node, &iter, path))
3857                 size_changed = TRUE;
3858             }
3859           if (tree_view->priv->scroll_to_use_align)
3860             {
3861               gint height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3862               area_above = (total_height - height) *
3863                 tree_view->priv->scroll_to_row_align;
3864               area_below = total_height - area_above - height;
3865               area_above = MAX (area_above, 0);
3866               area_below = MAX (area_below, 0);
3867             }
3868           else
3869             {
3870               /* FIXME: */
3871               g_warning ("non use_align not implemented yet");
3872               gtk_tree_path_free (path);
3873               path = NULL;
3874             }
3875         }
3876       else
3877         /* the scroll to isn't valid; ignore it.
3878          */
3879         {
3880           if (tree_view->priv->scroll_to_path && !path)
3881             {
3882               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
3883               tree_view->priv->scroll_to_path = NULL;
3884             }
3885           if (path)
3886             gtk_tree_path_free (path);
3887           path = NULL;
3888         }
3889     }
3890
3891   /* We didn't have a scroll_to set, so we just handle things normally
3892    */
3893   if (path == NULL)
3894     {
3895       gint offset;
3896
3897       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
3898                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
3899                                         &tree, &node);
3900       if (node == NULL)
3901         {
3902           /* In this case, nothing has been validated */
3903           path = gtk_tree_path_new_first ();
3904           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
3905         }
3906       else
3907         {
3908           path = _gtk_tree_view_find_path (tree_view, tree, node);
3909           total_height += offset;
3910         }
3911
3912       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3913
3914       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3915           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3916         {
3917           need_redraw = TRUE;
3918           if (validate_row (tree_view, tree, node, &iter, path))
3919             size_changed = TRUE;
3920         }
3921       area_above = 0;
3922       area_below = total_height - MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3923     }
3924
3925   above_path = gtk_tree_path_copy (path);
3926
3927   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
3928    * backwards is much slower then forward, as there is no iter_prev function.
3929    * We go forwards first in case we run out of tree.  Then we go backwards to
3930    * fill out the top.
3931    */
3932   while (node && area_below > 0)
3933     {
3934       if (node->children)
3935         {
3936           GtkTreeIter parent = iter;
3937           gboolean has_child;
3938
3939           tree = node->children;
3940           node = tree->root;
3941
3942           g_assert (node != tree->nil);
3943
3944           while (node->left != tree->nil)
3945             node = node->left;
3946           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3947                                                     &iter,
3948                                                     &parent);
3949           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
3950           gtk_tree_path_down (path);
3951         }
3952       else
3953         {
3954           gboolean done = FALSE;
3955           do
3956             {
3957               node = _gtk_rbtree_next (tree, node);
3958               if (node != NULL)
3959                 {
3960                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3961                   done = TRUE;
3962                   gtk_tree_path_next (path);
3963
3964                   /* Sanity Check! */
3965                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
3966                 }
3967               else
3968                 {
3969                   GtkTreeIter parent_iter = iter;
3970                   gboolean has_parent;
3971
3972                   node = tree->parent_node;
3973                   tree = tree->parent_tree;
3974                   if (tree == NULL)
3975                     break;
3976                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3977                                                            &iter,
3978                                                            &parent_iter);
3979                   gtk_tree_path_up (path);
3980
3981                   /* Sanity check */
3982                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
3983                 }
3984             }
3985           while (!done);
3986         }
3987       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3988           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3989         {
3990           need_redraw = TRUE;
3991           if (validate_row (tree_view, tree, node, &iter, path))
3992             size_changed = TRUE;
3993         }
3994       if (node)
3995         area_below -= MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3996     }
3997   gtk_tree_path_free (path);
3998
3999   /* If we ran out of tree, and have extra area_below left, we need to remove it
4000    * from the area_above */
4001   if (area_below > 0)
4002     area_above += area_below;
4003
4004   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
4005
4006   /* We walk backwards */
4007   while (area_above > 0)
4008     {
4009       _gtk_rbtree_prev_full (tree, node, &tree, &node);
4010       if (! gtk_tree_path_prev (above_path) && node != NULL)
4011         {
4012           gtk_tree_path_free (above_path);
4013           above_path = _gtk_tree_view_find_path (tree_view, tree, node);
4014         }
4015       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
4016
4017       if (node == NULL)
4018         break;
4019
4020       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4021           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4022         {
4023           need_redraw = TRUE;
4024           if (validate_row (tree_view, tree, node, &iter, above_path))
4025             size_changed = TRUE;
4026         }
4027       area_above -= MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
4028       modify_dy = TRUE;
4029     }
4030
4031   if (size_changed)
4032     {
4033       GtkRequisition requisition;
4034       /* We temporarily guess a size, under the assumption that it will be the
4035        * same when we get our next size_allocate.  If we don't do this, we'll be
4036        * in an inconsistent state if we call top_row_to_dy. */
4037       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
4038       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
4039       gtk_adjustment_changed (tree_view->priv->hadjustment);
4040       gtk_adjustment_changed (tree_view->priv->vadjustment);
4041       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4042     }
4043
4044   /* if we walk backwards at all, then we need to reset our dy. */
4045   if (modify_dy)
4046     {
4047       gint dy;
4048       if (node != NULL)
4049         {
4050           dy = _gtk_rbtree_node_find_offset (tree, node) - area_above;
4051         }
4052       else
4053         {
4054           dy = 0;
4055         }
4056       gtk_adjustment_set_value (tree_view->priv->vadjustment, dy);
4057       need_redraw = TRUE;
4058     }
4059
4060   if (tree_view->priv->scroll_to_path)
4061     {
4062       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
4063       tree_view->priv->scroll_to_path = NULL;
4064     }
4065
4066   if (above_path)
4067     gtk_tree_path_free (above_path);
4068
4069   if (tree_view->priv->scroll_to_column)
4070     {
4071       tree_view->priv->scroll_to_column = NULL;
4072     }
4073   if (need_redraw)
4074     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4075 }
4076
4077
4078 /* Our strategy for finding nodes to validate is a little convoluted.  We find
4079  * the left-most uninvalidated node.  We then try walking right, validating
4080  * nodes.  Once we find a valid node, we repeat the previous process of finding
4081  * the first invalid node.
4082  */
4083
4084 static gboolean
4085 do_validate_rows (GtkTreeView *tree_view)
4086 {
4087   GtkRBTree *tree = NULL;
4088   GtkRBNode *node = NULL;
4089   gboolean validated_area = FALSE;
4090   gint retval = TRUE;
4091   GtkTreePath *path = NULL;
4092   GtkTreeIter iter;
4093   gint i = 0;
4094
4095   gint prev_height = -1;
4096   gboolean fixed_height = TRUE;
4097
4098   g_assert (tree_view);
4099
4100   if (tree_view->priv->tree == NULL)
4101       return FALSE;
4102
4103   do
4104     {
4105       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
4106         {
4107           retval = FALSE;
4108           goto done;
4109         }
4110
4111       if (path != NULL)
4112         {
4113           node = _gtk_rbtree_next (tree, node);
4114           if (node != NULL)
4115             {
4116               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
4117               gtk_tree_path_next (path);
4118             }
4119           else
4120             {
4121               gtk_tree_path_free (path);
4122               path = NULL;
4123             }
4124         }
4125
4126       if (path == NULL)
4127         {
4128           tree = tree_view->priv->tree;
4129           node = tree_view->priv->tree->root;
4130
4131           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
4132
4133           do
4134             {
4135               if (node->left != tree->nil &&
4136                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
4137                 {
4138                   node = node->left;
4139                 }
4140               else if (node->right != tree->nil &&
4141                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
4142                 {
4143                   node = node->right;
4144                 }
4145               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
4146                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
4147                 {
4148                   break;
4149                 }
4150               else if (node->children != NULL)
4151                 {
4152                   tree = node->children;
4153                   node = tree->root;
4154                 }
4155               else
4156                 /* RBTree corruption!  All bad */
4157                 g_assert_not_reached ();
4158             }
4159           while (TRUE);
4160           path = _gtk_tree_view_find_path (tree_view, tree, node);
4161           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
4162         }
4163       validated_area = validate_row (tree_view, tree, node, &iter, path) | validated_area;
4164
4165       if (!tree_view->priv->fixed_height_check)
4166         {
4167           gint height;
4168
4169           height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
4170           if (prev_height < 0)
4171             prev_height = height;
4172           else if (prev_height != height)
4173             fixed_height = FALSE;
4174         }
4175
4176       i++;
4177     }
4178   while (i < GTK_TREE_VIEW_NUM_ROWS_PER_IDLE);
4179
4180   if (!tree_view->priv->fixed_height_check)
4181    {
4182      if (fixed_height)
4183        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height);
4184
4185      tree_view->priv->fixed_height_check = 1;
4186    }
4187
4188  done:
4189   if (validated_area)
4190     {
4191       GtkRequisition requisition;
4192       /* We temporarily guess a size, under the assumption that it will be the
4193        * same when we get our next size_allocate.  If we don't do this, we'll be
4194        * in an inconsistent state when we call top_row_to_dy. */
4195       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
4196       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
4197       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
4198       gtk_adjustment_changed (tree_view->priv->hadjustment);
4199       gtk_adjustment_changed (tree_view->priv->vadjustment);
4200       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4201     }
4202
4203   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
4204     gtk_tree_view_top_row_to_dy (tree_view);
4205   else
4206     gtk_tree_view_dy_to_top_row (tree_view);
4207
4208   if (path) gtk_tree_path_free (path);
4209
4210   return retval;
4211 }
4212
4213 static gboolean
4214 validate_rows (GtkTreeView *tree_view)
4215 {
4216   gboolean retval;
4217
4218   retval = do_validate_rows (tree_view);
4219
4220   if (! retval && tree_view->priv->validate_rows_timer)
4221     {
4222       g_source_remove (tree_view->priv->validate_rows_timer);
4223       tree_view->priv->validate_rows_timer = 0;
4224     }
4225
4226   return retval;
4227 }
4228
4229 static gboolean
4230 validate_rows_handler (GtkTreeView *tree_view)
4231 {
4232   gboolean retval;
4233
4234   GDK_THREADS_ENTER ();
4235
4236   retval = do_validate_rows (tree_view);
4237   if (! retval)
4238     tree_view->priv->validate_rows_timer = 0;
4239
4240   GDK_THREADS_LEAVE ();
4241
4242   return retval;
4243 }
4244
4245 static gboolean
4246 do_presize_handler (GtkTreeView *tree_view)
4247 {
4248   if (tree_view->priv->mark_rows_col_dirty)
4249     {
4250       if (tree_view->priv->tree)
4251         _gtk_rbtree_column_invalid (tree_view->priv->tree);
4252       tree_view->priv->mark_rows_col_dirty = FALSE;
4253     }
4254   validate_visible_area (tree_view);
4255   tree_view->priv->presize_handler_timer = 0;
4256
4257   return FALSE;
4258 }
4259
4260 static gboolean
4261 presize_handler_callback (gpointer data)
4262 {
4263   GDK_THREADS_ENTER ();
4264
4265   do_presize_handler (GTK_TREE_VIEW (data));
4266
4267   GDK_THREADS_LEAVE ();
4268
4269   return FALSE;
4270 }
4271
4272 static void
4273 install_presize_handler (GtkTreeView *tree_view)
4274 {
4275   if (! GTK_WIDGET_REALIZED (tree_view))
4276     return;
4277
4278   if (! tree_view->priv->presize_handler_timer)
4279     {
4280       tree_view->priv->presize_handler_timer =
4281         g_idle_add_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
4282     }
4283   if (! tree_view->priv->validate_rows_timer)
4284     {
4285       tree_view->priv->validate_rows_timer =
4286         g_idle_add_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
4287     }
4288 }
4289
4290 static gboolean
4291 scroll_sync_handler (GtkTreeView *tree_view)
4292 {
4293
4294   GDK_THREADS_ENTER ();
4295
4296   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
4297     gtk_tree_view_top_row_to_dy (tree_view);
4298   else
4299     gtk_tree_view_dy_to_top_row (tree_view);
4300
4301   tree_view->priv->scroll_sync_timer = 0;
4302
4303   GDK_THREADS_LEAVE ();
4304
4305   return FALSE;
4306 }
4307
4308 static void
4309 install_scroll_sync_handler (GtkTreeView *tree_view)
4310 {
4311   if (! GTK_WIDGET_REALIZED (tree_view))
4312     return;
4313
4314   if (!tree_view->priv->scroll_sync_timer)
4315     {
4316       tree_view->priv->scroll_sync_timer =
4317         g_idle_add_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
4318     }
4319 }
4320
4321 /* Always call this iff dy is in the visible range.  If the tree is empty, then
4322  * it's set to be NULL, and top_row_dy is 0;
4323  */
4324 static void
4325 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
4326 {
4327   GtkTreePath *path;
4328   GtkRBTree *tree;
4329   GtkRBNode *node;
4330
4331   gtk_tree_row_reference_free (tree_view->priv->top_row);
4332   if (tree_view->priv->tree == NULL)
4333     tree = NULL;
4334   else
4335     tree_view->priv->top_row_dy = _gtk_rbtree_find_offset (tree_view->priv->tree,
4336                                                            tree_view->priv->dy,
4337                                                            &tree, &node);
4338   if (tree == NULL)
4339     {
4340       tree_view->priv->top_row = NULL;
4341       tree_view->priv->top_row_dy = 0;
4342       return;
4343     }
4344
4345   path = _gtk_tree_view_find_path (tree_view, tree, node);
4346   tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
4347   gtk_tree_path_free (path);
4348 }
4349
4350 static void
4351 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
4352 {
4353   GtkTreePath *path;
4354   GtkRBTree *tree;
4355   GtkRBNode *node;
4356
4357   if (tree_view->priv->top_row)
4358     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
4359   else
4360     path = NULL;
4361
4362   if (!path)
4363     tree = NULL;
4364   else
4365     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
4366
4367   if (path)
4368     gtk_tree_path_free (path);
4369
4370   if (tree == NULL)
4371     {
4372       /* keep dy and set new toprow */
4373       gtk_tree_row_reference_free (tree_view->priv->top_row);
4374       tree_view->priv->top_row = NULL;
4375       tree_view->priv->top_row_dy = 0;
4376       /* DO NOT install the idle handler */
4377       gtk_tree_view_dy_to_top_row (tree_view);
4378       return;
4379     }
4380
4381   if (MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size)
4382       < tree_view->priv->top_row_dy)
4383     {
4384       /* new top row -- do NOT install the idle handler */
4385       gtk_tree_view_dy_to_top_row (tree_view);
4386       return;
4387     }
4388
4389   tree_view->priv->dy = _gtk_rbtree_node_find_offset (tree, node);
4390   tree_view->priv->dy += tree_view->priv->top_row_dy;
4391   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4392                             (gdouble)tree_view->priv->dy);
4393 }
4394
4395
4396 void
4397 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
4398 {
4399   tree_view->priv->mark_rows_col_dirty = TRUE;
4400
4401   install_presize_handler (tree_view);
4402 }
4403
4404 /*
4405  * This function works synchronously (due to the while (validate_rows...)
4406  * loop).
4407  *
4408  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
4409  * here. You now need to check that yourself.
4410  */
4411 void
4412 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
4413                                 GtkTreeViewColumn *column)
4414 {
4415   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
4416   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
4417
4418   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
4419
4420   do_presize_handler (tree_view);
4421   while (validate_rows (tree_view));
4422
4423   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4424 }
4425
4426 /* Drag-and-drop */
4427
4428 static void
4429 set_source_row (GdkDragContext *context,
4430                 GtkTreeModel   *model,
4431                 GtkTreePath    *source_row)
4432 {
4433   g_object_set_data_full (G_OBJECT (context),
4434                           "gtk-tree-view-source-row",
4435                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
4436                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
4437 }
4438
4439 static GtkTreePath*
4440 get_source_row (GdkDragContext *context)
4441 {
4442   GtkTreeRowReference *ref =
4443     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
4444
4445   if (ref)
4446     return gtk_tree_row_reference_get_path (ref);
4447   else
4448     return NULL;
4449 }
4450
4451
4452 static void
4453 set_dest_row (GdkDragContext *context,
4454               GtkTreeModel   *model,
4455               GtkTreePath    *dest_row)
4456 {
4457   g_object_set_data_full (G_OBJECT (context),
4458                           "gtk-tree-view-dest-row",
4459                           dest_row ? gtk_tree_row_reference_new (model, dest_row) : NULL,
4460                           (GDestroyNotify) (dest_row ? gtk_tree_row_reference_free : NULL));
4461 }
4462
4463 static GtkTreePath*
4464 get_dest_row (GdkDragContext *context)
4465 {
4466   GtkTreeRowReference *ref =
4467     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
4468
4469   if (ref)
4470     return gtk_tree_row_reference_get_path (ref);
4471   else
4472     return NULL;
4473 }
4474
4475 /* Get/set whether drag_motion requested the drag data and
4476  * drag_data_received should thus not actually insert the data,
4477  * since the data doesn't result from a drop.
4478  */
4479 static void
4480 set_status_pending (GdkDragContext *context,
4481                     GdkDragAction   suggested_action)
4482 {
4483   g_object_set_data (G_OBJECT (context),
4484                      "gtk-tree-view-status-pending",
4485                      GINT_TO_POINTER (suggested_action));
4486 }
4487
4488 static GdkDragAction
4489 get_status_pending (GdkDragContext *context)
4490 {
4491   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
4492                                              "gtk-tree-view-status-pending"));
4493 }
4494
4495 static TreeViewDragInfo*
4496 get_info (GtkTreeView *tree_view)
4497 {
4498   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
4499 }
4500
4501 static void
4502 clear_source_info (TreeViewDragInfo *di)
4503 {
4504   if (di->source_target_list)
4505     gtk_target_list_unref (di->source_target_list);
4506
4507   di->source_target_list = NULL;
4508 }
4509
4510 static void
4511 clear_dest_info (TreeViewDragInfo *di)
4512 {
4513   if (di->dest_target_list)
4514     gtk_target_list_unref (di->dest_target_list);
4515
4516   di->dest_target_list = NULL;
4517 }
4518
4519 static void
4520 destroy_info (TreeViewDragInfo *di)
4521 {
4522   clear_source_info (di);
4523   clear_dest_info (di);
4524   g_free (di);
4525 }
4526
4527 static TreeViewDragInfo*
4528 ensure_info (GtkTreeView *tree_view)
4529 {
4530   TreeViewDragInfo *di;
4531
4532   di = get_info (tree_view);
4533
4534   if (di == NULL)
4535     {
4536       di = g_new0 (TreeViewDragInfo, 1);
4537
4538       g_object_set_data_full (G_OBJECT (tree_view),
4539                               "gtk-tree-view-drag-info",
4540                               di,
4541                               (GDestroyNotify) destroy_info);
4542     }
4543
4544   return di;
4545 }
4546
4547 static void
4548 remove_info (GtkTreeView *tree_view)
4549 {
4550   g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
4551 }
4552
4553 #if 0
4554 static gint
4555 drag_scan_timeout (gpointer data)
4556 {
4557   GtkTreeView *tree_view;
4558   gint x, y;
4559   GdkModifierType state;
4560   GtkTreePath *path = NULL;
4561   GtkTreeViewColumn *column = NULL;
4562   GdkRectangle visible_rect;
4563
4564   GDK_THREADS_ENTER ();
4565
4566   tree_view = GTK_TREE_VIEW (data);
4567
4568   gdk_window_get_pointer (tree_view->priv->bin_window,
4569                           &x, &y, &state);
4570
4571   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4572
4573   /* See if we are near the edge. */
4574   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
4575       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
4576       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
4577       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
4578     {
4579       gtk_tree_view_get_path_at_pos (tree_view,
4580                                      tree_view->priv->bin_window,
4581                                      x, y,
4582                                      &path,
4583                                      &column,
4584                                      NULL,
4585                                      NULL);
4586
4587       if (path != NULL)
4588         {
4589           gtk_tree_view_scroll_to_cell (tree_view,
4590                                         path,
4591                                         column,
4592                                         TRUE,
4593                                         0.5, 0.5);
4594
4595           gtk_tree_path_free (path);
4596         }
4597     }
4598
4599   GDK_THREADS_LEAVE ();
4600
4601   return TRUE;
4602 }
4603 #endif /* 0 */
4604
4605 static void
4606 remove_scroll_timeout (GtkTreeView *tree_view)
4607 {
4608   if (tree_view->priv->scroll_timeout != 0)
4609     {
4610       gtk_timeout_remove (tree_view->priv->scroll_timeout);
4611       tree_view->priv->scroll_timeout = 0;
4612     }
4613 }
4614 static gboolean
4615 check_model_dnd (GtkTreeModel *model,
4616                  GType         required_iface,
4617                  const gchar  *signal)
4618 {
4619   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
4620     {
4621       g_warning ("You must override the default '%s' handler "
4622                  "on GtkTreeView when using models that don't support "
4623                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
4624                  "is to connect to '%s' and call "
4625                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
4626                  "the default handler from running. Look at the source code "
4627                  "for the default handler in gtktreeview.c to get an idea what "
4628                  "your handler should do. (gtktreeview.c is in the GTK source "
4629                  "code.) If you're using GTK from a language other than C, "
4630                  "there may be a more natural way to override default handlers, e.g. via derivation.",
4631                  signal, g_type_name (required_iface), signal);
4632       return FALSE;
4633     }
4634   else
4635     return TRUE;
4636 }
4637
4638 static void
4639 remove_open_timeout (GtkTreeView *tree_view)
4640 {
4641   if (tree_view->priv->open_dest_timeout != 0)
4642     {
4643       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
4644       tree_view->priv->open_dest_timeout = 0;
4645     }
4646 }
4647
4648
4649 static gint
4650 open_row_timeout (gpointer data)
4651 {
4652   GtkTreeView *tree_view = data;
4653   GtkTreePath *dest_path = NULL;
4654   GtkTreeViewDropPosition pos;
4655   gboolean result = FALSE;
4656
4657   GDK_THREADS_ENTER ();
4658
4659   gtk_tree_view_get_drag_dest_row (tree_view,
4660                                    &dest_path,
4661                                    &pos);
4662
4663   if (dest_path &&
4664       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4665        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
4666     {
4667       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
4668       tree_view->priv->open_dest_timeout = 0;
4669
4670       gtk_tree_path_free (dest_path);
4671     }
4672   else
4673     {
4674       if (dest_path)
4675         gtk_tree_path_free (dest_path);
4676
4677       result = TRUE;
4678     }
4679
4680   GDK_THREADS_LEAVE ();
4681
4682   return result;
4683 }
4684
4685 static gint
4686 scroll_row_timeout (gpointer data)
4687 {
4688   GtkTreeView *tree_view = data;
4689
4690   GDK_THREADS_ENTER ();
4691
4692   gtk_tree_view_vertical_autoscroll (tree_view);
4693
4694   GDK_THREADS_LEAVE ();
4695
4696   return TRUE;
4697 }
4698
4699 /* Returns TRUE if event should not be propagated to parent widgets */
4700 static gboolean
4701 set_destination_row (GtkTreeView    *tree_view,
4702                      GdkDragContext *context,
4703                      gint            x,
4704                      gint            y,
4705                      GdkDragAction  *suggested_action,
4706                      GdkAtom        *target)
4707 {
4708   GtkTreePath *path = NULL;
4709   GtkTreeViewDropPosition pos;
4710   GtkTreeViewDropPosition old_pos;
4711   TreeViewDragInfo *di;
4712   GtkWidget *widget;
4713   GtkTreePath *old_dest_path = NULL;
4714
4715   *suggested_action = 0;
4716   *target = GDK_NONE;
4717
4718   widget = GTK_WIDGET (tree_view);
4719
4720   di = get_info (tree_view);
4721
4722   if (di == NULL)
4723     {
4724       /* someone unset us as a drag dest, note that if
4725        * we return FALSE drag_leave isn't called
4726        */
4727
4728       gtk_tree_view_set_drag_dest_row (tree_view,
4729                                        NULL,
4730                                        GTK_TREE_VIEW_DROP_BEFORE);
4731
4732       remove_scroll_timeout (GTK_TREE_VIEW (widget));
4733       remove_open_timeout (GTK_TREE_VIEW (widget));
4734
4735       return FALSE; /* no longer a drop site */
4736     }
4737
4738   *target = gtk_drag_dest_find_target (widget, context, di->dest_target_list);
4739   if (*target == GDK_NONE)
4740     {
4741       return FALSE;
4742     }
4743
4744   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
4745                                           x, y,
4746                                           &path,
4747                                           &pos))
4748     {
4749       /* can't drop here */
4750       remove_open_timeout (tree_view);
4751
4752       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4753                                        NULL,
4754                                        GTK_TREE_VIEW_DROP_BEFORE);
4755
4756       if (path)
4757         gtk_tree_path_free (path);
4758
4759       /* don't propagate to parent though */
4760       return TRUE;
4761     }
4762
4763   g_assert (path);
4764
4765   /* If we left the current row's "open" zone, unset the timeout for
4766    * opening the row
4767    */
4768   gtk_tree_view_get_drag_dest_row (tree_view,
4769                                    &old_dest_path,
4770                                    &old_pos);
4771
4772   if (old_dest_path &&
4773       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
4774        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4775          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
4776     remove_open_timeout (tree_view);
4777
4778   if (old_dest_path)
4779     gtk_tree_path_free (old_dest_path);
4780
4781   if (TRUE /* FIXME if the location droppable predicate */)
4782     {
4783       GtkWidget *source_widget;
4784
4785       *suggested_action = context->suggested_action;
4786
4787       source_widget = gtk_drag_get_source_widget (context);
4788
4789       if (source_widget == widget)
4790         {
4791           /* Default to MOVE, unless the user has
4792            * pressed ctrl or alt to affect available actions
4793            */
4794           if ((context->actions & GDK_ACTION_MOVE) != 0)
4795             *suggested_action = GDK_ACTION_MOVE;
4796         }
4797
4798       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4799                                        path, pos);
4800     }
4801   else
4802     {
4803       /* can't drop here */
4804       remove_open_timeout (tree_view);
4805
4806       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4807                                        NULL,
4808                                        GTK_TREE_VIEW_DROP_BEFORE);
4809     }
4810
4811   if (path)
4812     gtk_tree_path_free (path);
4813
4814   return TRUE;
4815 }
4816 static GtkTreePath*
4817 get_logical_dest_row (GtkTreeView *tree_view)
4818
4819 {
4820   /* adjust path to point to the row the drop goes in front of */
4821   GtkTreePath *path = NULL;
4822   GtkTreeViewDropPosition pos;
4823
4824   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
4825
4826   if (path == NULL)
4827     return NULL;
4828
4829   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
4830     ; /* do nothing */
4831   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
4832            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
4833     {
4834       /* get first child, drop before it */
4835       gtk_tree_path_down (path);
4836     }
4837   else
4838     {
4839       GtkTreeIter iter;
4840       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
4841
4842       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
4843
4844       gtk_tree_model_get_iter (model, &iter, path);
4845
4846       if (!gtk_tree_model_iter_next (model, &iter))
4847         g_object_set_data (G_OBJECT (model), "gtk-tree-model-drop-append",
4848                            GINT_TO_POINTER (1));
4849       else
4850         {
4851           g_object_set_data (G_OBJECT (model), "gtk-tree-model-drop-append",
4852                              NULL);
4853           gtk_tree_path_next (path);
4854         }
4855     }
4856
4857   return path;
4858 }
4859
4860 static gboolean
4861 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
4862                                         GdkEventMotion   *event)
4863 {
4864   GdkDragContext *context;
4865   TreeViewDragInfo *di;
4866   GtkTreePath *path = NULL;
4867   gint button;
4868   gint cell_x, cell_y;
4869   GtkTreeModel *model;
4870   gboolean retval = FALSE;
4871
4872   di = get_info (tree_view);
4873
4874   if (di == NULL)
4875     goto out;
4876
4877   if (tree_view->priv->pressed_button < 0)
4878     goto out;
4879
4880   if (!gtk_drag_check_threshold (GTK_WIDGET (tree_view),
4881                                  tree_view->priv->press_start_x,
4882                                  tree_view->priv->press_start_y,
4883                                  event->x, event->y))
4884     goto out;
4885
4886   model = gtk_tree_view_get_model (tree_view);
4887
4888   if (model == NULL)
4889     goto out;
4890
4891   button = tree_view->priv->pressed_button;
4892   tree_view->priv->pressed_button = -1;
4893
4894   gtk_tree_view_get_path_at_pos (tree_view,
4895                                  tree_view->priv->press_start_x,
4896                                  tree_view->priv->press_start_y,
4897                                  &path,
4898                                  NULL,
4899                                  &cell_x,
4900                                  &cell_y);
4901
4902   if (path == NULL)
4903     goto out;
4904
4905   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
4906       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
4907                                            path))
4908     goto out;
4909
4910   /* FIXME Check whether we're a start button, if not return FALSE and
4911    * free path
4912    */
4913
4914   /* Now we can begin the drag */
4915
4916   retval = TRUE;
4917
4918   context = gtk_drag_begin (GTK_WIDGET (tree_view),
4919                             di->source_target_list,
4920                             di->source_actions,
4921                             button,
4922                             (GdkEvent*)event);
4923
4924   gtk_drag_set_icon_default (context);
4925
4926   {
4927     GdkPixmap *row_pix;
4928
4929     row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
4930                                                   path);
4931
4932     gtk_drag_set_icon_pixmap (context,
4933                               gdk_drawable_get_colormap (row_pix),
4934                               row_pix,
4935                               NULL,
4936                               /* the + 1 is for the black border in the icon */
4937                               tree_view->priv->press_start_x + 1,
4938                               cell_y + 1);
4939
4940     g_object_unref (row_pix);
4941   }
4942
4943   set_source_row (context, model, path);
4944
4945  out:
4946   if (path)
4947     gtk_tree_path_free (path);
4948
4949   return retval;
4950 }
4951
4952
4953 static void
4954 gtk_tree_view_drag_begin (GtkWidget      *widget,
4955                           GdkDragContext *context)
4956 {
4957   /* do nothing */
4958 }
4959
4960 static void
4961 gtk_tree_view_drag_end (GtkWidget      *widget,
4962                         GdkDragContext *context)
4963 {
4964   /* do nothing */
4965 }
4966
4967 /* Default signal implementations for the drag signals */
4968 static void
4969 gtk_tree_view_drag_data_get (GtkWidget        *widget,
4970                              GdkDragContext   *context,
4971                              GtkSelectionData *selection_data,
4972                              guint             info,
4973                              guint             time)
4974 {
4975   GtkTreeView *tree_view;
4976   GtkTreeModel *model;
4977   TreeViewDragInfo *di;
4978   GtkTreePath *source_row;
4979
4980   tree_view = GTK_TREE_VIEW (widget);
4981
4982   model = gtk_tree_view_get_model (tree_view);
4983
4984   if (model == NULL)
4985     return;
4986
4987   di = get_info (GTK_TREE_VIEW (widget));
4988
4989   if (di == NULL)
4990     return;
4991
4992   source_row = get_source_row (context);
4993
4994   if (source_row == NULL)
4995     return;
4996
4997   /* We can implement the GTK_TREE_MODEL_ROW target generically for
4998    * any model; for DragSource models there are some other targets
4999    * we also support.
5000    */
5001
5002   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
5003       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
5004                                           source_row,
5005                                           selection_data))
5006     goto done;
5007
5008   /* If drag_data_get does nothing, try providing row data. */
5009   if (selection_data->target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
5010     {
5011       gtk_tree_set_row_drag_data (selection_data,
5012                                   model,
5013                                   source_row);
5014     }
5015
5016  done:
5017   gtk_tree_path_free (source_row);
5018 }
5019
5020
5021 static void
5022 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
5023                                 GdkDragContext *context)
5024 {
5025   TreeViewDragInfo *di;
5026   GtkTreeModel *model;
5027   GtkTreeView *tree_view;
5028   GtkTreePath *source_row;
5029
5030   tree_view = GTK_TREE_VIEW (widget);
5031   model = gtk_tree_view_get_model (tree_view);
5032
5033   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
5034     return;
5035
5036   di = get_info (tree_view);
5037
5038   if (di == NULL)
5039     return;
5040
5041   source_row = get_source_row (context);
5042
5043   if (source_row == NULL)
5044     return;
5045
5046   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
5047                                          source_row);
5048
5049   gtk_tree_path_free (source_row);
5050
5051   set_source_row (context, NULL, NULL);
5052 }
5053
5054 static void
5055 gtk_tree_view_drag_leave (GtkWidget      *widget,
5056                           GdkDragContext *context,
5057                           guint             time)
5058 {
5059   TreeViewDragInfo *di;
5060
5061   di = get_info (GTK_TREE_VIEW (widget));
5062
5063   /* unset any highlight row */
5064   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5065                                    NULL,
5066                                    GTK_TREE_VIEW_DROP_BEFORE);
5067
5068   remove_scroll_timeout (GTK_TREE_VIEW (widget));
5069   remove_open_timeout (GTK_TREE_VIEW (widget));
5070 }
5071
5072
5073 static gboolean
5074 gtk_tree_view_drag_motion (GtkWidget        *widget,
5075                            GdkDragContext   *context,
5076                            gint              x,
5077                            gint              y,
5078                            guint             time)
5079 {
5080   GtkTreePath *path = NULL;
5081   GtkTreeViewDropPosition pos;
5082   GtkTreeView *tree_view;
5083   GdkDragAction suggested_action = 0;
5084   GdkAtom target;
5085
5086   tree_view = GTK_TREE_VIEW (widget);
5087
5088   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
5089     return FALSE;
5090
5091   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
5092
5093   if (path == NULL)
5094     {
5095       /* Can't drop here. */
5096       gdk_drag_status (context, 0, time);
5097     }
5098   else
5099     {
5100       if (tree_view->priv->open_dest_timeout == 0 &&
5101           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
5102            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
5103         {
5104           tree_view->priv->open_dest_timeout =
5105             gtk_timeout_add (500, open_row_timeout, tree_view);
5106         }
5107       else if (tree_view->priv->scroll_timeout == 0)
5108         {
5109           tree_view->priv->scroll_timeout =
5110             gtk_timeout_add (150, scroll_row_timeout, tree_view);
5111         }
5112
5113       if (target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
5114         {
5115           /* Request data so we can use the source row when
5116            * determining whether to accept the drop
5117            */
5118           set_status_pending (context, suggested_action);
5119           gtk_drag_get_data (widget, context, target, time);
5120         }
5121       else
5122         {
5123           set_status_pending (context, 0);
5124           gdk_drag_status (context, suggested_action, time);
5125         }
5126     }
5127
5128   if (path)
5129     gtk_tree_path_free (path);
5130
5131   return TRUE;
5132 }
5133
5134
5135 static gboolean
5136 gtk_tree_view_drag_drop (GtkWidget        *widget,
5137                          GdkDragContext   *context,
5138                          gint              x,
5139                          gint              y,
5140                          guint             time)
5141 {
5142   GtkTreeView *tree_view;
5143   GtkTreePath *path;
5144   GdkDragAction suggested_action = 0;
5145   GdkAtom target = GDK_NONE;
5146   TreeViewDragInfo *di;
5147   GtkTreeModel *model;
5148
5149   tree_view = GTK_TREE_VIEW (widget);
5150
5151   model = gtk_tree_view_get_model (tree_view);
5152
5153   remove_scroll_timeout (GTK_TREE_VIEW (widget));
5154   remove_open_timeout (GTK_TREE_VIEW (widget));
5155
5156   di = get_info (tree_view);
5157
5158   if (di == NULL)
5159     return FALSE;
5160
5161   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
5162     return FALSE;
5163
5164   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
5165     return FALSE;
5166
5167   path = get_logical_dest_row (tree_view);
5168
5169   if (target != GDK_NONE && path != NULL)
5170     {
5171       /* in case a motion had requested drag data, change things so we
5172        * treat drag data receives as a drop.
5173        */
5174       set_status_pending (context, 0);
5175
5176       set_dest_row (context, model, path);
5177     }
5178
5179   if (path)
5180     gtk_tree_path_free (path);
5181
5182   /* Unset this thing */
5183   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5184                                    NULL,
5185                                    GTK_TREE_VIEW_DROP_BEFORE);
5186
5187   if (target != GDK_NONE)
5188     {
5189       gtk_drag_get_data (widget, context, target, time);
5190       return TRUE;
5191     }
5192   else
5193     return FALSE;
5194 }
5195
5196 static void
5197 gtk_tree_view_drag_data_received (GtkWidget        *widget,
5198                                   GdkDragContext   *context,
5199                                   gint              x,
5200                                   gint              y,
5201                                   GtkSelectionData *selection_data,
5202                                   guint             info,
5203                                   guint             time)
5204 {
5205   GtkTreePath *path;
5206   TreeViewDragInfo *di;
5207   gboolean accepted = FALSE;
5208   GtkTreeModel *model;
5209   GtkTreeView *tree_view;
5210   GtkTreePath *dest_row;
5211   GdkDragAction suggested_action;
5212
5213   tree_view = GTK_TREE_VIEW (widget);
5214
5215   model = gtk_tree_view_get_model (tree_view);
5216
5217   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
5218     return;
5219
5220   di = get_info (tree_view);
5221
5222   if (di == NULL)
5223     return;
5224
5225   suggested_action = get_status_pending (context);
5226
5227   if (suggested_action)
5228     {
5229       /* We are getting this data due to a request in drag_motion,
5230        * rather than due to a request in drag_drop, so we are just
5231        * supposed to call drag_status, not actually paste in the
5232        * data.
5233        */
5234       path = get_logical_dest_row (tree_view);
5235
5236       if (path == NULL)
5237         suggested_action = 0;
5238
5239       if (suggested_action)
5240         {
5241           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
5242                                                      path,
5243                                                      selection_data))
5244             suggested_action = 0;
5245         }
5246
5247       gdk_drag_status (context, suggested_action, time);
5248
5249       if (path)
5250         gtk_tree_path_free (path);
5251
5252       /* If you can't drop, remove user drop indicator until the next motion */
5253       if (suggested_action == 0)
5254         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
5255                                          NULL,
5256                                          GTK_TREE_VIEW_DROP_BEFORE);
5257
5258       return;
5259     }
5260
5261   dest_row = get_dest_row (context);
5262
5263   if (dest_row == NULL)
5264     return;
5265
5266   if (selection_data->length >= 0)
5267     {
5268       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
5269                                                  dest_row,
5270                                                  selection_data))
5271         accepted = TRUE;
5272     }
5273
5274   gtk_drag_finish (context,
5275                    accepted,
5276                    (context->action == GDK_ACTION_MOVE),
5277                    time);
5278
5279   gtk_tree_path_free (dest_row);
5280
5281   /* drop dest_row */
5282   set_dest_row (context, NULL, NULL);
5283 }
5284
5285
5286
5287 /* GtkContainer Methods
5288  */
5289
5290
5291 static void
5292 gtk_tree_view_remove (GtkContainer *container,
5293                       GtkWidget    *widget)
5294 {
5295   GtkTreeView *tree_view;
5296   GtkTreeViewChild *child = NULL;
5297   GList *tmp_list;
5298
5299   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5300
5301   tree_view = GTK_TREE_VIEW (container);
5302
5303   tmp_list = tree_view->priv->children;
5304   while (tmp_list)
5305     {
5306       child = tmp_list->data;
5307       if (child->widget == widget)
5308         {
5309           gtk_widget_unparent (widget);
5310
5311           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
5312           g_list_free_1 (tmp_list);
5313           g_free (child);
5314           return;
5315         }
5316
5317       tmp_list = tmp_list->next;
5318     }
5319
5320   tmp_list = tree_view->priv->columns;
5321
5322   while (tmp_list)
5323     {
5324       GtkTreeViewColumn *column;
5325       column = tmp_list->data;
5326       if (column->button == widget)
5327         {
5328           gtk_widget_unparent (widget);
5329           return;
5330         }
5331       tmp_list = tmp_list->next;
5332     }
5333 }
5334
5335 static void
5336 gtk_tree_view_forall (GtkContainer *container,
5337                       gboolean      include_internals,
5338                       GtkCallback   callback,
5339                       gpointer      callback_data)
5340 {
5341   GtkTreeView *tree_view;
5342   GtkTreeViewChild *child = NULL;
5343   GtkTreeViewColumn *column;
5344   GList *tmp_list;
5345
5346   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5347   g_return_if_fail (callback != NULL);
5348
5349   tree_view = GTK_TREE_VIEW (container);
5350
5351   tmp_list = tree_view->priv->children;
5352   while (tmp_list)
5353     {
5354       child = tmp_list->data;
5355       tmp_list = tmp_list->next;
5356
5357       (* callback) (child->widget, callback_data);
5358     }
5359   if (include_internals == FALSE)
5360     return;
5361
5362   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5363     {
5364       column = tmp_list->data;
5365
5366       if (column->button)
5367         (* callback) (column->button, callback_data);
5368     }
5369 }
5370
5371 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
5372  * cells. If so we draw one big row-spanning focus rectangle.
5373  */
5374 static gboolean
5375 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
5376 {
5377   GList *list;
5378
5379   for (list = tree_view->priv->columns; list; list = list->next)
5380     {
5381       if (!((GtkTreeViewColumn *)list->data)->visible)
5382         continue;
5383       if (_gtk_tree_view_column_count_special_cells (list->data))
5384         return TRUE;
5385     }
5386
5387   return FALSE;
5388 }
5389
5390 /* Returns TRUE if the focus is within the headers, after the focus operation is
5391  * done
5392  */
5393 static gboolean
5394 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
5395                             GtkDirectionType  dir)
5396 {
5397   GtkWidget *focus_child;
5398   GtkContainer *container;
5399
5400   GList *last_column, *first_column;
5401   GList *tmp_list;
5402
5403   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5404     return FALSE;
5405
5406   focus_child = GTK_CONTAINER (tree_view)->focus_child;
5407   container = GTK_CONTAINER (tree_view);
5408
5409   first_column = tree_view->priv->columns;
5410   while (first_column)
5411     {
5412       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
5413           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
5414           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
5415            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
5416         break;
5417       first_column = first_column->next;
5418     }
5419
5420   /* No headers are visible, or are focusable.  We can't focus in or out.
5421    */
5422   if (first_column == NULL)
5423     return FALSE;
5424
5425   last_column = g_list_last (tree_view->priv->columns);
5426   while (last_column)
5427     {
5428       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
5429           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
5430           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
5431            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
5432         break;
5433       last_column = last_column->prev;
5434     }
5435
5436
5437   switch (dir)
5438     {
5439     case GTK_DIR_TAB_BACKWARD:
5440     case GTK_DIR_TAB_FORWARD:
5441     case GTK_DIR_UP:
5442     case GTK_DIR_DOWN:
5443       if (focus_child == NULL)
5444         {
5445           if (tree_view->priv->focus_column != NULL)
5446             focus_child = tree_view->priv->focus_column->button;
5447           else
5448             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5449           gtk_widget_grab_focus (focus_child);
5450           break;
5451         }
5452       return FALSE;
5453
5454     case GTK_DIR_LEFT:
5455     case GTK_DIR_RIGHT:
5456       if (focus_child == NULL)
5457         {
5458           if (tree_view->priv->focus_column != NULL)
5459             focus_child = tree_view->priv->focus_column->button;
5460           else if (dir == GTK_DIR_LEFT)
5461             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
5462           else
5463             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5464           gtk_widget_grab_focus (focus_child);
5465           break;
5466         }
5467
5468       if (gtk_widget_child_focus (focus_child, dir))
5469         {
5470           /* The focus moves inside the button. */
5471           /* This is probably a great example of bad UI */
5472           break;
5473         }
5474
5475       /* We need to move the focus among the row of buttons. */
5476       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5477         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
5478           break;
5479
5480       if (tmp_list == first_column && dir == GTK_DIR_LEFT)
5481         {
5482           focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
5483           gtk_widget_grab_focus (focus_child);
5484           break;
5485         }
5486       else if (tmp_list == last_column && dir == GTK_DIR_RIGHT)
5487         {
5488           focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5489           gtk_widget_grab_focus (focus_child);
5490           break;
5491         }
5492
5493       while (tmp_list)
5494         {
5495           GtkTreeViewColumn *column;
5496
5497           if (dir == GTK_DIR_RIGHT)
5498             tmp_list = tmp_list->next;
5499           else
5500             tmp_list = tmp_list->prev;
5501
5502           if (tmp_list == NULL)
5503             {
5504               g_warning ("Internal button not found");
5505               break;
5506             }
5507           column = tmp_list->data;
5508           if (column->button &&
5509               column->visible &&
5510               GTK_WIDGET_CAN_FOCUS (column->button))
5511             {
5512               focus_child = column->button;
5513               gtk_widget_grab_focus (column->button);
5514               break;
5515             }
5516         }
5517       break;
5518     default:
5519       g_assert_not_reached ();
5520       break;
5521     }
5522
5523   /* if focus child is non-null, we assume it's been set to the current focus child
5524    */
5525   if (focus_child)
5526     {
5527       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5528         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
5529           break;
5530
5531       tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5532
5533       /* If the following isn't true, then the view is smaller then the scrollpane.
5534        */
5535       if ((focus_child->allocation.x + focus_child->allocation.width) <=
5536           (tree_view->priv->hadjustment->upper))
5537         {
5538           /* Scroll to the button, if needed */
5539           if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
5540               (focus_child->allocation.x + focus_child->allocation.width))
5541             gtk_adjustment_set_value (tree_view->priv->hadjustment,
5542                                       focus_child->allocation.x + focus_child->allocation.width -
5543                                       tree_view->priv->hadjustment->page_size);
5544           else if (tree_view->priv->hadjustment->value > focus_child->allocation.x)
5545             gtk_adjustment_set_value (tree_view->priv->hadjustment,
5546                                       focus_child->allocation.x);
5547         }
5548     }
5549
5550   return (focus_child != NULL);
5551 }
5552
5553 static gint
5554 gtk_tree_view_focus (GtkWidget        *widget,
5555                      GtkDirectionType  direction)
5556 {
5557   GtkTreeView *tree_view;
5558   GtkWidget *focus_child;
5559   GtkContainer *container;
5560
5561   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
5562   g_return_val_if_fail (GTK_WIDGET_VISIBLE (widget), FALSE);
5563
5564   container = GTK_CONTAINER (widget);
5565   tree_view = GTK_TREE_VIEW (widget);
5566
5567   if (!GTK_WIDGET_IS_SENSITIVE (container))
5568     return FALSE;
5569
5570   focus_child = container->focus_child;
5571
5572   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
5573   /* Case 1.  Headers currently have focus. */
5574   if (focus_child)
5575     {
5576       switch (direction)
5577         {
5578         case GTK_DIR_LEFT:
5579         case GTK_DIR_RIGHT:
5580           gtk_tree_view_header_focus (tree_view, direction);
5581           return TRUE;
5582         case GTK_DIR_TAB_BACKWARD:
5583         case GTK_DIR_UP:
5584           return FALSE;
5585         case GTK_DIR_TAB_FORWARD:
5586         case GTK_DIR_DOWN:
5587           if (tree_view->priv->tree == NULL)
5588             return FALSE;
5589           gtk_widget_grab_focus (widget);
5590           return TRUE;
5591         }
5592     }
5593
5594   /* Case 2. We don't have focus at all. */
5595   if (!GTK_WIDGET_HAS_FOCUS (container))
5596     {
5597       if (tree_view->priv->tree == NULL &&
5598           (direction == GTK_DIR_TAB_BACKWARD ||
5599            direction == GTK_DIR_UP))
5600         return gtk_tree_view_header_focus (tree_view, direction);
5601       if (((direction == GTK_DIR_TAB_FORWARD) ||
5602            (direction == GTK_DIR_RIGHT) ||
5603            (direction == GTK_DIR_DOWN) ||
5604            (direction == GTK_DIR_LEFT)) &&
5605           gtk_tree_view_header_focus (tree_view, direction))
5606         return TRUE;
5607
5608       if (tree_view->priv->tree == NULL)
5609         return FALSE;
5610       gtk_widget_grab_focus (widget);
5611       return TRUE;
5612     }
5613
5614   /* Case 3. We have focus already. */
5615   if (tree_view->priv->tree == NULL)
5616     return gtk_tree_view_header_focus (tree_view, direction);
5617
5618   if (direction == GTK_DIR_TAB_BACKWARD)
5619     return (gtk_tree_view_header_focus (tree_view, direction));
5620   else if (direction == GTK_DIR_TAB_FORWARD)
5621     return FALSE;
5622
5623   /* Other directions caught by the keybindings */
5624   gtk_widget_grab_focus (widget);
5625   return TRUE;
5626 }
5627
5628 static void
5629 gtk_tree_view_grab_focus (GtkWidget *widget)
5630 {
5631   (* GTK_WIDGET_CLASS (parent_class)->grab_focus) (widget);
5632
5633   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
5634 }
5635
5636 static void
5637 gtk_tree_view_style_set (GtkWidget *widget,
5638                          GtkStyle *previous_style)
5639 {
5640   GtkTreeView *tree_view;
5641   GList *list;
5642   GtkTreeViewColumn *column;
5643
5644   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
5645
5646   tree_view = GTK_TREE_VIEW (widget);
5647
5648   gtk_widget_style_get (widget,
5649                         "expander_size", &tree_view->priv->expander_size,
5650                         NULL);
5651   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
5652
5653   for (list = tree_view->priv->columns; list; list = list->next)
5654     {
5655       column = list->data;
5656       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
5657     }
5658
5659   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
5660
5661   gtk_widget_queue_resize (widget);
5662 }
5663
5664
5665 static void
5666 gtk_tree_view_set_focus_child (GtkContainer *container,
5667                                GtkWidget    *child)
5668 {
5669   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
5670   GList *list;
5671
5672   for (list = tree_view->priv->columns; list; list = list->next)
5673     {
5674       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
5675         {
5676           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
5677           break;
5678         }
5679     }
5680
5681   (* parent_class->set_focus_child) (container, child);
5682 }
5683
5684 static void
5685 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
5686                                GtkAdjustment *hadj,
5687                                GtkAdjustment *vadj)
5688 {
5689   gboolean need_adjust = FALSE;
5690
5691   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5692
5693   if (hadj)
5694     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
5695   else
5696     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
5697   if (vadj)
5698     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
5699   else
5700     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
5701
5702   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
5703     {
5704       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
5705                                             gtk_tree_view_adjustment_changed,
5706                                             tree_view);
5707       g_object_unref (tree_view->priv->hadjustment);
5708     }
5709
5710   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
5711     {
5712       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
5713                                             gtk_tree_view_adjustment_changed,
5714                                             tree_view);
5715       g_object_unref (tree_view->priv->vadjustment);
5716     }
5717
5718   if (tree_view->priv->hadjustment != hadj)
5719     {
5720       tree_view->priv->hadjustment = hadj;
5721       g_object_ref (tree_view->priv->hadjustment);
5722       gtk_object_sink (GTK_OBJECT (tree_view->priv->hadjustment));
5723
5724       g_signal_connect (tree_view->priv->hadjustment, "value_changed",
5725                         G_CALLBACK (gtk_tree_view_adjustment_changed),
5726                         tree_view);
5727       need_adjust = TRUE;
5728     }
5729
5730   if (tree_view->priv->vadjustment != vadj)
5731     {
5732       tree_view->priv->vadjustment = vadj;
5733       g_object_ref (tree_view->priv->vadjustment);
5734       gtk_object_sink (GTK_OBJECT (tree_view->priv->vadjustment));
5735
5736       g_signal_connect (tree_view->priv->vadjustment, "value_changed",
5737                         G_CALLBACK (gtk_tree_view_adjustment_changed),
5738                         tree_view);
5739       need_adjust = TRUE;
5740     }
5741
5742   if (need_adjust)
5743     gtk_tree_view_adjustment_changed (NULL, tree_view);
5744 }
5745
5746
5747 static gboolean
5748 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
5749                                 GtkMovementStep    step,
5750                                 gint               count)
5751 {
5752   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
5753   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
5754                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
5755                         step == GTK_MOVEMENT_DISPLAY_LINES ||
5756                         step == GTK_MOVEMENT_PAGES ||
5757                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
5758
5759   if (tree_view->priv->tree == NULL)
5760     return FALSE;
5761   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (tree_view)))
5762     return FALSE;
5763
5764   gtk_tree_view_stop_editing (tree_view, FALSE);
5765   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
5766   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5767
5768   switch (step)
5769     {
5770       /* currently we make no distinction.  When we go bi-di, we need to */
5771     case GTK_MOVEMENT_LOGICAL_POSITIONS:
5772     case GTK_MOVEMENT_VISUAL_POSITIONS:
5773       gtk_tree_view_move_cursor_left_right (tree_view, count);
5774       break;
5775     case GTK_MOVEMENT_DISPLAY_LINES:
5776       gtk_tree_view_move_cursor_up_down (tree_view, count);
5777       break;
5778     case GTK_MOVEMENT_PAGES:
5779       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
5780       break;
5781     case GTK_MOVEMENT_BUFFER_ENDS:
5782       gtk_tree_view_move_cursor_start_end (tree_view, count);
5783       break;
5784     default:
5785       g_assert_not_reached ();
5786     }
5787
5788   return TRUE;
5789 }
5790
5791 static void
5792 gtk_tree_view_put (GtkTreeView *tree_view,
5793                    GtkWidget   *child_widget,
5794                    gint         x,
5795                    gint         y,
5796                    gint         width,
5797                    gint         height)
5798 {
5799   GtkTreeViewChild *child;
5800
5801   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5802   g_return_if_fail (GTK_IS_WIDGET (child_widget));
5803
5804   child = g_new (GtkTreeViewChild, 1);
5805
5806   child->widget = child_widget;
5807   child->x = x;
5808   child->y = y;
5809   child->width = width;
5810   child->height = height;
5811
5812   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
5813
5814   if (GTK_WIDGET_REALIZED (tree_view))
5815     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
5816
5817   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
5818 }
5819
5820 void
5821 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
5822                                   GtkWidget   *widget,
5823                                   gint         x,
5824                                   gint         y,
5825                                   gint         width,
5826                                   gint         height)
5827 {
5828   GtkTreeViewChild *child = NULL;
5829   GList *list;
5830   GdkRectangle allocation;
5831
5832   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5833   g_return_if_fail (GTK_IS_WIDGET (widget));
5834
5835   for (list = tree_view->priv->children; list; list = list->next)
5836     {
5837       if (((GtkTreeViewChild *)list->data)->widget == widget)
5838         {
5839           child = list->data;
5840           break;
5841         }
5842     }
5843   if (child == NULL)
5844     return;
5845
5846   allocation.x = child->x = x;
5847   allocation.y = child->y = y;
5848   allocation.width = child->width = width;
5849   allocation.height = child->height = height;
5850
5851   if (GTK_WIDGET_REALIZED (widget))
5852     gtk_widget_size_allocate (widget, &allocation);
5853 }
5854
5855
5856 /* TreeModel Callbacks
5857  */
5858
5859 static void
5860 gtk_tree_view_row_changed (GtkTreeModel *model,
5861                            GtkTreePath  *path,
5862                            GtkTreeIter  *iter,
5863                            gpointer      data)
5864 {
5865   GtkTreeView *tree_view = (GtkTreeView *)data;
5866   GtkRBTree *tree;
5867   GtkRBNode *node;
5868   gboolean free_path = FALSE;
5869   gint vertical_separator;
5870   GList *list;
5871
5872   g_return_if_fail (path != NULL || iter != NULL);
5873
5874   if (!GTK_WIDGET_REALIZED (tree_view))
5875     /* We can just ignore ::changed signals if we aren't realized, as we don't care about sizes
5876      */
5877     return;
5878
5879   if (tree_view->priv->edited_column)
5880     gtk_tree_view_stop_editing (tree_view, TRUE);
5881
5882   gtk_widget_style_get (GTK_WIDGET (data), "vertical_separator", &vertical_separator, NULL);
5883
5884   if (path == NULL)
5885     {
5886       path = gtk_tree_model_get_path (model, iter);
5887       free_path = TRUE;
5888     }
5889   else if (iter == NULL)
5890     gtk_tree_model_get_iter (model, iter, path);
5891
5892   if (_gtk_tree_view_find_node (tree_view,
5893                                 path,
5894                                 &tree,
5895                                 &node))
5896     /* We aren't actually showing the node */
5897     goto done;
5898
5899   if (tree == NULL)
5900     goto done;
5901
5902   _gtk_rbtree_node_mark_invalid (tree, node);
5903   for (list = tree_view->priv->columns; list; list = list->next)
5904     {
5905       GtkTreeViewColumn *column;
5906
5907       column = list->data;
5908       if (! column->visible)
5909         continue;
5910
5911       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
5912         {
5913           _gtk_tree_view_column_cell_set_dirty (column, TRUE);
5914         }
5915     }
5916
5917  done:
5918   install_presize_handler (tree_view);
5919   if (free_path)
5920     gtk_tree_path_free (path);
5921 }
5922
5923 static void
5924 gtk_tree_view_row_inserted (GtkTreeModel *model,
5925                             GtkTreePath  *path,
5926                             GtkTreeIter  *iter,
5927                             gpointer      data)
5928 {
5929   GtkTreeView *tree_view = (GtkTreeView *) data;
5930   gint *indices;
5931   GtkRBTree *tmptree, *tree;
5932   GtkRBNode *tmpnode = NULL;
5933   gint depth;
5934   gint i = 0;
5935   gboolean free_path = FALSE;
5936
5937   g_return_if_fail (path != NULL || iter != NULL);
5938
5939   if (path == NULL)
5940     {
5941       path = gtk_tree_model_get_path (model, iter);
5942       free_path = TRUE;
5943     }
5944   else if (iter == NULL)
5945     gtk_tree_model_get_iter (model, iter, path);
5946
5947   if (tree_view->priv->tree == NULL)
5948     tree_view->priv->tree = _gtk_rbtree_new ();
5949
5950   tmptree = tree = tree_view->priv->tree;
5951
5952   /* Update all row-references */
5953   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
5954   depth = gtk_tree_path_get_depth (path);
5955   indices = gtk_tree_path_get_indices (path);
5956
5957   /* First, find the parent tree */
5958   while (i < depth - 1)
5959     {
5960       if (tmptree == NULL)
5961         {
5962           /* We aren't showing the node */
5963           goto done;
5964         }
5965
5966       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
5967       if (tmpnode == NULL)
5968         {
5969           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
5970                      "This possibly means that a GtkTreeModel inserted a child node\n" \
5971                      "before the parent was inserted.");
5972           goto done;
5973         }
5974       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
5975         {
5976           /* FIXME enforce correct behavior on model, probably */
5977           /* In theory, the model should have emitted has_child_toggled here.  We
5978            * try to catch it anyway, just to be safe, in case the model hasn't.
5979            */
5980           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
5981                                                            tree,
5982                                                            tmpnode);
5983           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
5984           gtk_tree_path_free (tmppath);
5985           goto done;
5986         }
5987
5988       tmptree = tmpnode->children;
5989       tree = tmptree;
5990       i++;
5991     }
5992
5993   if (tree == NULL)
5994     goto done;
5995
5996   /* ref the node */
5997   gtk_tree_model_ref_node (tree_view->priv->model, iter);
5998   if (indices[depth - 1] == 0)
5999     {
6000       tmpnode = _gtk_rbtree_find_count (tree, 1);
6001       _gtk_rbtree_insert_before (tree, tmpnode, 0, FALSE);
6002     }
6003   else
6004     {
6005       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
6006       _gtk_rbtree_insert_after (tree, tmpnode, 0, FALSE);
6007     }
6008
6009  done:
6010   install_presize_handler (tree_view);
6011   if (free_path)
6012     gtk_tree_path_free (path);
6013 }
6014
6015 static void
6016 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
6017                                      GtkTreePath  *path,
6018                                      GtkTreeIter  *iter,
6019                                      gpointer      data)
6020 {
6021   GtkTreeView *tree_view = (GtkTreeView *)data;
6022   GtkTreeIter real_iter;
6023   gboolean has_child;
6024   GtkRBTree *tree;
6025   GtkRBNode *node;
6026   gboolean free_path = FALSE;
6027
6028   g_return_if_fail (path != NULL || iter != NULL);
6029
6030   if (iter)
6031     real_iter = *iter;
6032
6033   if (path == NULL)
6034     {
6035       path = gtk_tree_model_get_path (model, iter);
6036       free_path = TRUE;
6037     }
6038   else if (iter == NULL)
6039     gtk_tree_model_get_iter (model, &real_iter, path);
6040
6041   if (_gtk_tree_view_find_node (tree_view,
6042                                 path,
6043                                 &tree,
6044                                 &node))
6045     /* We aren't actually showing the node */
6046     goto done;
6047
6048   if (tree == NULL)
6049     goto done;
6050
6051   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
6052   /* Sanity check.
6053    */
6054   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
6055     goto done;
6056
6057   if (has_child)
6058     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
6059   else
6060     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
6061
6062   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
6063     {
6064       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
6065       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
6066         {
6067           GList *list;
6068
6069           for (list = tree_view->priv->columns; list; list = list->next)
6070             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
6071               {
6072                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
6073                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
6074                 break;
6075               }
6076         }
6077       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6078     }
6079   else
6080     {
6081       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
6082     }
6083
6084  done:
6085   if (free_path)
6086     gtk_tree_path_free (path);
6087 }
6088
6089 static void
6090 count_children_helper (GtkRBTree *tree,
6091                        GtkRBNode *node,
6092                        gpointer   data)
6093 {
6094   if (node->children)
6095     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
6096   (*((gint *)data))++;
6097 }
6098
6099 static void
6100 gtk_tree_view_row_deleted (GtkTreeModel *model,
6101                            GtkTreePath  *path,
6102                            gpointer      data)
6103 {
6104   GtkTreeView *tree_view = (GtkTreeView *)data;
6105   GtkRBTree *tree;
6106   GtkRBNode *node;
6107   GList *list;
6108   gint selection_changed;
6109
6110   g_return_if_fail (path != NULL);
6111
6112   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
6113
6114   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
6115     return;
6116
6117   if (tree == NULL)
6118     return;
6119
6120   /* Change the selection */
6121   selection_changed = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
6122
6123   for (list = tree_view->priv->columns; list; list = list->next)
6124     if (((GtkTreeViewColumn *)list->data)->visible &&
6125         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
6126       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
6127
6128   /* Ensure we don't have a dangling pointer to a dead node */
6129   ensure_unprelighted (tree_view);
6130
6131   /* Cancel editting if we've started */
6132   gtk_tree_view_stop_editing (tree_view, TRUE);
6133
6134   /* If we have a node expanded/collapsed timeout, remove it */
6135   if (tree_view->priv->expand_collapse_timeout != 0)
6136     {
6137       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
6138       tree_view->priv->expand_collapse_timeout = 0;
6139
6140       /* Reset node */
6141       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
6142       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
6143       tree_view->priv->expanded_collapsed_node = NULL;
6144     }
6145
6146   if (tree_view->priv->destroy_count_func)
6147     {
6148       gint child_count = 0;
6149       if (node->children)
6150         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
6151       (* tree_view->priv->destroy_count_func) (tree_view, path, child_count, tree_view->priv->destroy_count_data);
6152     }
6153
6154   if (tree->root->count == 1)
6155     {
6156       if (tree_view->priv->tree == tree)
6157         tree_view->priv->tree = NULL;
6158
6159       _gtk_rbtree_remove (tree);
6160     }
6161   else
6162     {
6163       _gtk_rbtree_remove_node (tree, node);
6164     }
6165
6166   install_scroll_sync_handler (tree_view);
6167
6168   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6169
6170   if (selection_changed)
6171     g_signal_emit_by_name (tree_view->priv->selection, "changed");
6172 }
6173
6174
6175 static void
6176 gtk_tree_view_rows_reordered (GtkTreeModel *model,
6177                               GtkTreePath  *parent,
6178                               GtkTreeIter  *iter,
6179                               gint         *new_order,
6180                               gpointer      data)
6181 {
6182   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
6183   GtkRBTree *tree;
6184   GtkRBNode *node;
6185   gint len;
6186
6187   len = gtk_tree_model_iter_n_children (model, iter);
6188
6189   if (len < 2)
6190     return;
6191
6192   gtk_tree_row_reference_reordered (G_OBJECT (data),
6193                                     parent,
6194                                     iter,
6195                                     new_order);
6196
6197   if (_gtk_tree_view_find_node (tree_view,
6198                                 parent,
6199                                 &tree,
6200                                 &node))
6201     return;
6202
6203   /* We need to special case the parent path */
6204   if (tree == NULL)
6205     tree = tree_view->priv->tree;
6206   else
6207     tree = node->children;
6208
6209   if (tree == NULL)
6210     return;
6211
6212   /* we need to be unprelighted */
6213   ensure_unprelighted (tree_view);
6214
6215   _gtk_rbtree_reorder (tree, new_order, len);
6216
6217   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6218
6219   gtk_tree_view_dy_to_top_row (tree_view);
6220 }
6221
6222
6223 /* Internal tree functions
6224  */
6225
6226
6227 static void
6228 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
6229                                      GtkRBTree         *tree,
6230                                      GtkTreeViewColumn *column,
6231                                      gint              *x1,
6232                                      gint              *x2)
6233 {
6234   GtkTreeViewColumn *tmp_column = NULL;
6235   gint total_width;
6236   GList *list;
6237
6238   if (x1)
6239     *x1 = 0;
6240
6241   if (x2)
6242     *x2 = 0;
6243
6244   total_width = 0;
6245   for (list = tree_view->priv->columns; list; list = list->next)
6246     {
6247       tmp_column = list->data;
6248
6249       if (tmp_column == column)
6250         break;
6251
6252       if (tmp_column->visible)
6253         total_width += tmp_column->width;
6254     }
6255
6256   if (tmp_column != column)
6257     {
6258       g_warning (G_STRLOC": passed-in column isn't in the tree");
6259       return;
6260     }
6261
6262   if (x1)
6263     *x1 = total_width;
6264
6265   if (x2)
6266     {
6267       if (column->visible)
6268         *x2 = total_width + column->width;
6269       else
6270         *x2 = total_width; /* width of 0 */
6271     }
6272 }
6273 static void
6274 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
6275                                 GtkRBTree   *tree,
6276                                 gint        *x1,
6277                                 gint        *x2)
6278 {
6279   gint x_offset = 0;
6280   GList *list;
6281   GtkTreeViewColumn *tmp_column = NULL;
6282   gint total_width;
6283   gboolean indent_expanders;
6284
6285   total_width = 0;
6286   for (list = tree_view->priv->columns; list; list = list->next)
6287     {
6288       tmp_column = list->data;
6289
6290       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
6291         {
6292           x_offset = total_width;
6293           break;
6294         }
6295
6296       if (tmp_column->visible)
6297         total_width += tmp_column->width;
6298     }
6299
6300   gtk_widget_style_get (GTK_WIDGET (tree_view),
6301                         "indent_expanders", &indent_expanders,
6302                         NULL);
6303
6304   if (indent_expanders)
6305     x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
6306
6307   if (x1)
6308     *x1 = x_offset;
6309
6310   if (tmp_column && tmp_column->visible)
6311     {
6312       /* +1 because x2 isn't included in the range. */
6313       if (x2)
6314         *x2 = x_offset + tree_view->priv->expander_size + 1;
6315     }
6316   else
6317     {
6318       /* return an empty range, the expander column is hidden */
6319       if (x2)
6320         *x2 = x_offset;
6321     }
6322 }
6323
6324 static void
6325 gtk_tree_view_build_tree (GtkTreeView *tree_view,
6326                           GtkRBTree   *tree,
6327                           GtkTreeIter *iter,
6328                           gint         depth,
6329                           gboolean     recurse)
6330 {
6331   GtkRBNode *temp = NULL;
6332
6333   do
6334     {
6335       gtk_tree_model_ref_node (tree_view->priv->model, iter);
6336       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
6337       if (recurse)
6338         {
6339           GtkTreeIter child;
6340
6341           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
6342             {
6343               temp->children = _gtk_rbtree_new ();
6344               temp->children->parent_tree = tree;
6345               temp->children->parent_node = temp;
6346               gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
6347             }
6348         }
6349       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
6350         {
6351           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
6352             temp->flags ^= GTK_RBNODE_IS_PARENT;
6353           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
6354         }
6355     }
6356   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
6357 }
6358
6359 /* If height is non-NULL, then we set it to be the new height.  if it's all
6360  * dirty, then height is -1.  We know we'll remeasure dirty rows, anyways.
6361  */
6362 static gboolean
6363 gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
6364                                    GtkTreeIter *iter,
6365                                    gint         depth,
6366                                    gint        *height,
6367                                    GtkRBNode   *node)
6368 {
6369   GtkTreeViewColumn *column;
6370   GList *list;
6371   gboolean retval = FALSE;
6372   gint tmpheight;
6373   gint horizontal_separator;
6374
6375   gtk_widget_style_get (GTK_WIDGET (tree_view),
6376                         "horizontal_separator", &horizontal_separator,
6377                         NULL);
6378
6379   if (height)
6380     *height = -1;
6381
6382   for (list = tree_view->priv->columns; list; list = list->next)
6383     {
6384       gint width;
6385       column = list->data;
6386       if (column->dirty == TRUE)
6387         continue;
6388       if (height == NULL && column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
6389         continue;
6390       if (!column->visible)
6391         continue;
6392
6393       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6394                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6395                                                node->children?TRUE:FALSE);
6396
6397       if (height)
6398         {
6399           gtk_tree_view_column_cell_get_size (column,
6400                                               NULL, NULL, NULL,
6401                                               &width, &tmpheight);
6402           *height = MAX (*height, tmpheight);
6403         }
6404       else
6405         {
6406           gtk_tree_view_column_cell_get_size (column,
6407                                               NULL, NULL, NULL,
6408                                               &width, NULL);
6409         }
6410
6411       if (gtk_tree_view_is_expander_column (tree_view, column) &&
6412           TREE_VIEW_DRAW_EXPANDERS (tree_view))
6413         {
6414           if (depth * tree_view->priv->expander_size + horizontal_separator + width > column->requested_width)
6415             {
6416               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6417               retval = TRUE;
6418             }
6419         }
6420       else
6421         {
6422           if (horizontal_separator + width > column->requested_width)
6423             {
6424               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6425               retval = TRUE;
6426             }
6427         }
6428     }
6429
6430   return retval;
6431 }
6432
6433 static void
6434 gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
6435                               GtkRBTree   *tree,
6436                               GtkTreeIter *iter,
6437                               gint         depth)
6438 {
6439   GtkRBNode *temp = tree->root;
6440   GtkTreeViewColumn *column;
6441   GList *list;
6442   GtkTreeIter child;
6443   gboolean is_all_dirty;
6444
6445   TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
6446
6447   while (temp->left != tree->nil)
6448     temp = temp->left;
6449
6450   do
6451     {
6452       TREE_VIEW_INTERNAL_ASSERT_VOID (temp != NULL);
6453       is_all_dirty = TRUE;
6454       for (list = tree_view->priv->columns; list; list = list->next)
6455         {
6456           column = list->data;
6457           if (column->dirty == FALSE)
6458             {
6459               is_all_dirty = FALSE;
6460               break;
6461             }
6462         }
6463
6464       if (is_all_dirty)
6465         return;
6466
6467       gtk_tree_view_discover_dirty_iter (tree_view,
6468                                          iter,
6469                                          depth,
6470                                          NULL,
6471                                          temp);
6472       if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter) &&
6473           temp->children != NULL)
6474         gtk_tree_view_discover_dirty (tree_view, temp->children, &child, depth + 1);
6475       temp = _gtk_rbtree_next (tree, temp);
6476     }
6477   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
6478 }
6479
6480
6481 /* Make sure the node is visible vertically */
6482 static void
6483 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
6484                                   GtkRBTree   *tree,
6485                                   GtkRBNode   *node)
6486 {
6487   GdkRectangle cell_rect;
6488   GdkRectangle vis_rect;
6489   gint dest_y;
6490
6491   /* We process updates because we want to clear old selected items when we scroll.
6492    * if this is removed, we get a "selection streak" at the bottom. */
6493   if (!GTK_WIDGET_REALIZED (tree_view))
6494     return;
6495
6496   gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6497   cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, BACKGROUND_FIRST_PIXEL (tree_view, tree, node));
6498   cell_rect.height = BACKGROUND_HEIGHT (node);
6499   gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
6500
6501   dest_y = vis_rect.y;
6502
6503   if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
6504     dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
6505   if (cell_rect.y < vis_rect.y)
6506     dest_y = cell_rect.y;
6507
6508   gtk_tree_view_scroll_to_point (tree_view, -1, dest_y);
6509 }
6510
6511 static void
6512 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
6513                                     GtkTreeViewColumn *column)
6514 {
6515   if (column == NULL)
6516     return;
6517   if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
6518       (column->button->allocation.x + column->button->allocation.width))
6519     gtk_adjustment_set_value (tree_view->priv->hadjustment,
6520                               column->button->allocation.x + column->button->allocation.width -
6521                               tree_view->priv->hadjustment->page_size);
6522   else if (tree_view->priv->hadjustment->value > column->button->allocation.x)
6523     gtk_adjustment_set_value (tree_view->priv->hadjustment,
6524                               column->button->allocation.x);
6525 }
6526
6527 /* This function could be more efficient.  I'll optimize it if profiling seems
6528  * to imply that it is important */
6529 GtkTreePath *
6530 _gtk_tree_view_find_path (GtkTreeView *tree_view,
6531                           GtkRBTree   *tree,
6532                           GtkRBNode   *node)
6533 {
6534   GtkTreePath *path;
6535   GtkRBTree *tmp_tree;
6536   GtkRBNode *tmp_node, *last;
6537   gint count;
6538
6539   path = gtk_tree_path_new ();
6540
6541   g_return_val_if_fail (node != NULL, path);
6542   g_return_val_if_fail (node != tree->nil, path);
6543
6544   count = 1 + node->left->count;
6545
6546   last = node;
6547   tmp_node = node->parent;
6548   tmp_tree = tree;
6549   while (tmp_tree)
6550     {
6551       while (tmp_node != tmp_tree->nil)
6552         {
6553           if (tmp_node->right == last)
6554             count += 1 + tmp_node->left->count;
6555           last = tmp_node;
6556           tmp_node = tmp_node->parent;
6557         }
6558       gtk_tree_path_prepend_index (path, count - 1);
6559       last = tmp_tree->parent_node;
6560       tmp_tree = tmp_tree->parent_tree;
6561       if (last)
6562         {
6563           count = 1 + last->left->count;
6564           tmp_node = last->parent;
6565         }
6566     }
6567   return path;
6568 }
6569
6570 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
6571  * invalid (ie. points to a node that's not in the tree), *tree and *node are
6572  * both set to NULL.
6573  */
6574 gboolean
6575 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
6576                           GtkTreePath  *path,
6577                           GtkRBTree   **tree,
6578                           GtkRBNode   **node)
6579 {
6580   GtkRBNode *tmpnode = NULL;
6581   GtkRBTree *tmptree = tree_view->priv->tree;
6582   gint *indices = gtk_tree_path_get_indices (path);
6583   gint depth = gtk_tree_path_get_depth (path);
6584   gint i = 0;
6585
6586   *node = NULL;
6587   *tree = NULL;
6588
6589   if (depth == 0 || tmptree == NULL)
6590     return FALSE;
6591   do
6592     {
6593       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
6594       ++i;
6595       if (tmpnode == NULL)
6596         {
6597           *tree = NULL;
6598           *node = NULL;
6599           return FALSE;
6600         }
6601       if (i >= depth)
6602         {
6603           *tree = tmptree;
6604           *node = tmpnode;
6605           return FALSE;
6606         }
6607       *tree = tmptree;
6608       *node = tmpnode;
6609       tmptree = tmpnode->children;
6610       if (tmptree == NULL)
6611         return TRUE;
6612     }
6613   while (1);
6614 }
6615
6616 static gboolean
6617 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
6618                                   GtkTreeViewColumn *column)
6619 {
6620   GList *list;
6621
6622   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
6623     return FALSE;
6624
6625   if (tree_view->priv->expander_column != NULL)
6626     {
6627       if (tree_view->priv->expander_column == column)
6628         return TRUE;
6629       return FALSE;
6630     }
6631   else
6632     {
6633       for (list = tree_view->priv->columns; list; list = list->next)
6634         if (((GtkTreeViewColumn *)list->data)->visible)
6635           break;
6636       if (list && list->data == column)
6637         return TRUE;
6638     }
6639   return FALSE;
6640 }
6641
6642 static void
6643 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
6644                                 guint           keyval,
6645                                 guint           modmask,
6646                                 GtkMovementStep step,
6647                                 gint            count)
6648 {
6649
6650   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
6651                                 "move_cursor", 2,
6652                                 G_TYPE_ENUM, step,
6653                                 G_TYPE_INT, count);
6654
6655   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
6656                                 "move_cursor", 2,
6657                                 G_TYPE_ENUM, step,
6658                                 G_TYPE_INT, count);
6659
6660   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
6661    return;
6662
6663   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
6664                                 "move_cursor", 2,
6665                                 G_TYPE_ENUM, step,
6666                                 G_TYPE_INT, count);
6667
6668   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
6669                                 "move_cursor", 2,
6670                                 G_TYPE_ENUM, step,
6671                                 G_TYPE_INT, count);
6672 }
6673
6674 static gint
6675 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
6676                                  GtkTreeIter  *iter,
6677                                  GtkRBTree    *tree,
6678                                  GtkRBNode    *node)
6679 {
6680   gint retval = FALSE;
6681   do
6682     {
6683       g_return_val_if_fail (node != NULL, FALSE);
6684
6685       if (node->children)
6686         {
6687           GtkTreeIter child;
6688           GtkRBTree *new_tree;
6689           GtkRBNode *new_node;
6690
6691           new_tree = node->children;
6692           new_node = new_tree->root;
6693
6694           while (new_node && new_node->left != new_tree->nil)
6695             new_node = new_node->left;
6696
6697           if (!gtk_tree_model_iter_children (model, &child, iter))
6698             return FALSE;
6699
6700           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
6701         }
6702
6703       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
6704         retval = TRUE;
6705       gtk_tree_model_unref_node (model, iter);
6706       node = _gtk_rbtree_next (tree, node);
6707     }
6708   while (gtk_tree_model_iter_next (model, iter));
6709
6710   return retval;
6711 }
6712
6713 static gint
6714 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
6715                                               GtkRBTree   *tree)
6716 {
6717   GtkTreeIter iter;
6718   GtkTreePath *path;
6719   GtkRBNode *node;
6720   gint retval;
6721
6722   if (!tree)
6723     return FALSE;
6724
6725   node = tree->root;
6726   while (node && node->left != tree->nil)
6727     node = node->left;
6728
6729   g_return_val_if_fail (node != NULL, FALSE);
6730   path = _gtk_tree_view_find_path (tree_view, tree, node);
6731   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
6732                            &iter, path);
6733   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
6734   gtk_tree_path_free (path);
6735
6736   return retval;
6737 }
6738
6739 static void
6740 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
6741                                     GtkTreeViewColumn *column)
6742 {
6743   GtkTreeViewColumn *left_column;
6744   GtkTreeViewColumn *cur_column = NULL;
6745   GtkTreeViewColumnReorder *reorder;
6746
6747   GList *tmp_list;
6748   gint left;
6749
6750   /* We want to precalculate the motion list such that we know what column slots
6751    * are available.
6752    */
6753   left_column = NULL;
6754
6755   /* First, identify all possible drop spots */
6756   tmp_list = tree_view->priv->columns;
6757
6758   while (tmp_list)
6759     {
6760       g_assert (tmp_list);
6761
6762       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
6763       tmp_list = tmp_list->next;
6764
6765       if (cur_column->visible == FALSE)
6766         continue;
6767
6768       /* If it's not the column moving and func tells us to skip over the column, we continue. */
6769       if (left_column != column && cur_column != column &&
6770           tree_view->priv->column_drop_func &&
6771           ! (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
6772         {
6773           left_column = cur_column;
6774           continue;
6775         }
6776       reorder = g_new (GtkTreeViewColumnReorder, 1);
6777       reorder->left_column = left_column;
6778       left_column = reorder->right_column = cur_column;
6779
6780       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
6781     }
6782
6783   /* Add the last one */
6784   if (tree_view->priv->column_drop_func == NULL ||
6785       ((left_column != column) &&
6786        (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data)))
6787     {
6788       reorder = g_new (GtkTreeViewColumnReorder, 1);
6789       reorder->left_column = left_column;
6790       reorder->right_column = NULL;
6791       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
6792     }
6793
6794   /* We quickly check to see if it even makes sense to reorder columns. */
6795   /* If there is nothing that can be moved, then we return */
6796
6797   if (tree_view->priv->column_drag_info == NULL)
6798     return;
6799
6800   /* We know there are always 2 slots possbile, as you can always return column. */
6801   /* If that's all there is, return */
6802   if (tree_view->priv->column_drag_info->next->next == NULL &&
6803       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
6804       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column)
6805     {
6806       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
6807         g_free (tmp_list->data);
6808       g_list_free (tree_view->priv->column_drag_info);
6809       tree_view->priv->column_drag_info = NULL;
6810       return;
6811     }
6812   /* We fill in the ranges for the columns, now that we've isolated them */
6813   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
6814
6815   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
6816     {
6817       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
6818
6819       reorder->left_align = left;
6820       if (tmp_list->next != NULL)
6821         {
6822           g_assert (tmp_list->next->data);
6823           left = reorder->right_align = (reorder->right_column->button->allocation.x +
6824                                          reorder->right_column->button->allocation.width +
6825                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
6826         }
6827       else
6828         {
6829           gint width;
6830
6831           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
6832           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
6833         }
6834     }
6835 }
6836
6837 void
6838 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
6839                                   GtkTreeViewColumn *column)
6840 {
6841   GdkEvent *send_event;
6842   GtkAllocation allocation;
6843   gint x, y, width, height;
6844   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
6845   GdkDisplay *display = gdk_screen_get_display (screen);
6846
6847   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
6848
6849   gtk_tree_view_set_column_drag_info (tree_view, column);
6850
6851   if (tree_view->priv->column_drag_info == NULL)
6852     return;
6853
6854   if (tree_view->priv->drag_window == NULL)
6855     {
6856       GdkWindowAttr attributes;
6857       guint attributes_mask;
6858
6859       attributes.window_type = GDK_WINDOW_CHILD;
6860       attributes.wclass = GDK_INPUT_OUTPUT;
6861       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
6862       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
6863       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
6864       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
6865
6866       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
6867                                                      &attributes,
6868                                                      attributes_mask);
6869       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
6870     }
6871
6872   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
6873   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
6874
6875   gtk_grab_remove (column->button);
6876
6877   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
6878   send_event->crossing.send_event = TRUE;
6879   send_event->crossing.window = g_object_ref (column->button->window);
6880   send_event->crossing.subwindow = NULL;
6881   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
6882   send_event->crossing.time = GDK_CURRENT_TIME;
6883
6884   gtk_propagate_event (column->button, send_event);
6885   gdk_event_free (send_event);
6886
6887   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
6888   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
6889   send_event->button.send_event = TRUE;
6890   send_event->button.time = GDK_CURRENT_TIME;
6891   send_event->button.x = -1;
6892   send_event->button.y = -1;
6893   send_event->button.axes = NULL;
6894   send_event->button.state = 0;
6895   send_event->button.button = 1;
6896   send_event->button.device = gdk_display_get_core_pointer (display);
6897   send_event->button.x_root = 0;
6898   send_event->button.y_root = 0;
6899
6900   gtk_propagate_event (column->button, send_event);
6901   gdk_event_free (send_event);
6902
6903   gdk_window_move_resize (tree_view->priv->drag_window,
6904                           column->button->allocation.x,
6905                           0,
6906                           column->button->allocation.width,
6907                           column->button->allocation.height);
6908
6909   /* Kids, don't try this at home */
6910   g_object_ref (column->button);
6911   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
6912   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
6913   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
6914   g_object_unref (column->button);
6915
6916   tree_view->priv->drag_column_x = column->button->allocation.x;
6917   allocation = column->button->allocation;
6918   allocation.x = 0;
6919   gtk_widget_size_allocate (column->button, &allocation);
6920   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
6921
6922   tree_view->priv->drag_column = column;
6923   gdk_window_show (tree_view->priv->drag_window);
6924
6925   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
6926   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
6927
6928   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6929   while (gtk_events_pending ())
6930     gtk_main_iteration ();
6931
6932   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
6933   gdk_pointer_grab (tree_view->priv->drag_window,
6934                     FALSE,
6935                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
6936                     NULL, NULL, GDK_CURRENT_TIME);
6937   gdk_keyboard_grab (tree_view->priv->drag_window,
6938                      FALSE,
6939                      GDK_CURRENT_TIME);
6940
6941 }
6942
6943 static void
6944 gtk_tree_view_queue_draw_arrow (GtkTreeView      *tree_view,
6945                                 GtkRBTree        *tree,
6946                                 GtkRBNode        *node,
6947                                 GdkRectangle     *clip_rect)
6948 {
6949   GdkRectangle rect;
6950
6951   if (!GTK_WIDGET_REALIZED (tree_view))
6952     return;
6953
6954   rect.x = 0;
6955   rect.width = MAX (tree_view->priv->expander_size, GTK_WIDGET (tree_view)->allocation.width);
6956
6957   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
6958   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
6959
6960   if (clip_rect)
6961     {
6962       GdkRectangle new_rect;
6963
6964       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
6965
6966       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
6967     }
6968   else
6969     {
6970       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
6971     }
6972 }
6973
6974 void
6975 _gtk_tree_view_queue_draw_node (GtkTreeView  *tree_view,
6976                                 GtkRBTree    *tree,
6977                                 GtkRBNode    *node,
6978                                 GdkRectangle *clip_rect)
6979 {
6980   GdkRectangle rect;
6981
6982   if (!GTK_WIDGET_REALIZED (tree_view))
6983     return;
6984
6985   rect.x = 0;
6986   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
6987
6988   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
6989   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
6990
6991   if (clip_rect)
6992     {
6993       GdkRectangle new_rect;
6994
6995       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
6996
6997       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
6998     }
6999   else
7000     {
7001       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
7002     }
7003 }
7004
7005 static void
7006 gtk_tree_view_queue_draw_path (GtkTreeView      *tree_view,
7007                                GtkTreePath      *path,
7008                                GdkRectangle     *clip_rect)
7009 {
7010   GtkRBTree *tree = NULL;
7011   GtkRBNode *node = NULL;
7012
7013   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
7014
7015   if (tree)
7016     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
7017 }
7018
7019 /* x and y are the mouse position
7020  */
7021 static void
7022 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
7023                           GtkRBTree   *tree,
7024                           GtkRBNode   *node,
7025                           gint         x,
7026                           gint         y)
7027 {
7028   GdkRectangle area;
7029   GtkStateType state;
7030   GtkWidget *widget;
7031   gint x_offset = 0;
7032   gint vertical_separator;
7033   gint expander_size;
7034   GtkExpanderStyle expander_style;
7035
7036   gtk_widget_style_get (GTK_WIDGET (tree_view),
7037                         "vertical_separator", &vertical_separator,
7038                         NULL);
7039   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
7040
7041   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
7042     return;
7043
7044   widget = GTK_WIDGET (tree_view);
7045
7046   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, NULL);
7047
7048   area.x = x_offset;
7049   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
7050   area.width = expander_size + 2;
7051   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
7052
7053   if (node == tree_view->priv->button_pressed_node)
7054     {
7055       if (x >= area.x && x <= (area.x + area.width) &&
7056           y >= area.y && y <= (area.y + area.height))
7057         state = GTK_STATE_ACTIVE;
7058       else
7059         state = GTK_STATE_NORMAL;
7060     }
7061   else
7062     {
7063       if (node == tree_view->priv->prelight_node &&
7064           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
7065         state = GTK_STATE_PRELIGHT;
7066       else
7067         state = GTK_STATE_NORMAL;
7068     }
7069
7070   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
7071     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
7072   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
7073     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
7074   else if (node->children != NULL)
7075     expander_style = GTK_EXPANDER_EXPANDED;
7076   else
7077     expander_style = GTK_EXPANDER_COLLAPSED;
7078
7079   gtk_paint_expander (widget->style,
7080                       tree_view->priv->bin_window,
7081                       state,
7082                       &area,
7083                       widget,
7084                       "treeview",
7085                       area.x + area.width / 2,
7086                       area.y + area.height / 2,
7087                       expander_style);
7088 }
7089
7090 static void
7091 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
7092
7093 {
7094   GtkTreePath *cursor_path;
7095
7096   if ((tree_view->priv->tree == NULL) ||
7097       (! GTK_WIDGET_REALIZED (tree_view)))
7098     return;
7099
7100   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
7101
7102   cursor_path = NULL;
7103   if (tree_view->priv->cursor)
7104     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7105
7106   if (cursor_path == NULL)
7107     {
7108       cursor_path = gtk_tree_path_new_first ();
7109       gtk_tree_row_reference_free (tree_view->priv->cursor);
7110       tree_view->priv->cursor = NULL;
7111
7112       if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
7113         gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
7114       else
7115         gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
7116     }
7117   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7118   gtk_tree_path_free (cursor_path);
7119
7120   if (tree_view->priv->focus_column == NULL)
7121     {
7122       GList *list;
7123       for (list = tree_view->priv->columns; list; list = list->next)
7124         {
7125           if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
7126             {
7127               tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
7128               break;
7129             }
7130         }
7131     }
7132 }
7133
7134 static void
7135 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
7136                                    gint         count)
7137 {
7138   GtkRBTree *cursor_tree = NULL;
7139   GtkRBNode *cursor_node = NULL;
7140   GtkRBTree *new_cursor_tree = NULL;
7141   GtkRBNode *new_cursor_node = NULL;
7142   GtkTreePath *cursor_path = NULL;
7143
7144   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7145     return;
7146
7147   cursor_path = NULL;
7148   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
7149     /* FIXME: we lost the cursor; should we get the first? */
7150     return;
7151
7152   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7153   _gtk_tree_view_find_node (tree_view, cursor_path,
7154                             &cursor_tree, &cursor_node);
7155   gtk_tree_path_free (cursor_path);
7156
7157   if (cursor_tree == NULL)
7158     /* FIXME: we lost the cursor; should we get the first? */
7159     return;
7160   if (count == -1)
7161     _gtk_rbtree_prev_full (cursor_tree, cursor_node,
7162                            &new_cursor_tree, &new_cursor_node);
7163   else
7164     _gtk_rbtree_next_full (cursor_tree, cursor_node,
7165                            &new_cursor_tree, &new_cursor_node);
7166
7167   if (new_cursor_node)
7168     {
7169       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
7170       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
7171       gtk_tree_path_free (cursor_path);
7172     }
7173   else
7174     {
7175       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7176     }
7177
7178   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7179 }
7180
7181 static void
7182 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
7183                                         gint         count)
7184 {
7185   GtkRBTree *cursor_tree = NULL;
7186   GtkRBNode *cursor_node = NULL;
7187   GtkTreePath *cursor_path = NULL;
7188   gint y;
7189   gint vertical_separator;
7190
7191   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7192     return;
7193
7194   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
7195     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7196   else
7197     /* This is sorta weird.  Focus in should give us a cursor */
7198     return;
7199
7200   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
7201   _gtk_tree_view_find_node (tree_view, cursor_path,
7202                             &cursor_tree, &cursor_node);
7203
7204   gtk_tree_path_free (cursor_path);
7205
7206   if (cursor_tree == NULL)
7207     /* FIXME: we lost the cursor.  Should we try to get one? */
7208     return;
7209   g_return_if_fail (cursor_node != NULL);
7210
7211   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
7212   y += count * tree_view->priv->vadjustment->page_size;
7213   if (count > 0)
7214     y -= MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
7215               tree_view->priv->expander_size);
7216   else if (count < 0)
7217     y += MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
7218               tree_view->priv->expander_size);
7219   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
7220
7221   if (y > tree_view->priv->height)
7222     y = tree_view->priv->height - 1;
7223
7224   _gtk_rbtree_find_offset (tree_view->priv->tree, y, &cursor_tree, &cursor_node);
7225   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
7226   g_return_if_fail (cursor_path != NULL);
7227   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
7228   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7229   gtk_tree_path_free (cursor_path);
7230 }
7231
7232 static void
7233 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
7234                                       gint         count)
7235 {
7236   GtkRBTree *cursor_tree = NULL;
7237   GtkRBNode *cursor_node = NULL;
7238   GtkTreePath *cursor_path = NULL;
7239   GtkTreeViewColumn *column;
7240   GtkTreeIter iter;
7241   GList *list;
7242   gboolean found_column = FALSE;
7243
7244   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7245     return;
7246
7247   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
7248     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7249   else
7250     return;
7251
7252   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
7253   if (cursor_tree == NULL)
7254     return;
7255   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
7256     {
7257       gtk_tree_path_free (cursor_path);
7258       return;
7259     }
7260   gtk_tree_path_free (cursor_path);
7261
7262   list = tree_view->priv->columns;
7263   if (tree_view->priv->focus_column)
7264     {
7265       for (list = tree_view->priv->columns; list; list = list->next)
7266         {
7267           if (list->data == tree_view->priv->focus_column)
7268             break;
7269         }
7270     }
7271
7272   while (list)
7273     {
7274       column = list->data;
7275       if (column->visible == FALSE)
7276         goto loop_end;
7277
7278       gtk_tree_view_column_cell_set_cell_data (column,
7279                                                tree_view->priv->model,
7280                                                &iter,
7281                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
7282                                                cursor_node->children?TRUE:FALSE);
7283       if (_gtk_tree_view_column_cell_focus (column, count,
7284                                             list->prev?TRUE:FALSE,
7285                                             list->next?TRUE:FALSE))
7286         {
7287           tree_view->priv->focus_column = column;
7288           found_column = TRUE;
7289           break;
7290         }
7291     loop_end:
7292       if (count == 1)
7293         list = list->next;
7294       else
7295         list = list->prev;
7296     }
7297
7298   if (found_column)
7299     {
7300       if (!gtk_tree_view_has_special_cell (tree_view))
7301         _gtk_tree_view_queue_draw_node (tree_view,
7302                                         cursor_tree,
7303                                         cursor_node,
7304                                         NULL);
7305       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
7306     }
7307   gtk_tree_view_clamp_column_visible (tree_view, tree_view->priv->focus_column);
7308 }
7309
7310 static void
7311 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
7312                                      gint         count)
7313 {
7314   GtkRBTree *cursor_tree;
7315   GtkRBNode *cursor_node;
7316   GtkTreePath *path;
7317
7318   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7319     return;
7320
7321   g_return_if_fail (tree_view->priv->tree != NULL);
7322
7323   if (count == -1)
7324     {
7325       cursor_tree = tree_view->priv->tree;
7326       cursor_node = cursor_tree->root;
7327       while (cursor_node && cursor_node->left != cursor_tree->nil)
7328         cursor_node = cursor_node->left;
7329     }
7330   else
7331     {
7332       cursor_tree = tree_view->priv->tree;
7333       cursor_node = cursor_tree->root;
7334       do
7335         {
7336           while (cursor_node && cursor_node->right != cursor_tree->nil)
7337             cursor_node = cursor_node->right;
7338           if (cursor_node->children == NULL)
7339             break;
7340
7341           cursor_tree = cursor_node->children;
7342           cursor_node = cursor_tree->root;
7343         }
7344       while (1);
7345     }
7346
7347   path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
7348   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
7349   gtk_tree_path_free (path);
7350 }
7351
7352 static void
7353 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
7354 {
7355   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7356     return;
7357
7358   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
7359     return;
7360   gtk_tree_selection_select_all (tree_view->priv->selection);
7361 }
7362
7363 static void
7364 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
7365 {
7366   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7367     return;
7368
7369   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
7370     return;
7371   gtk_tree_selection_unselect_all (tree_view->priv->selection);
7372 }
7373
7374 static void
7375 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
7376                                       gboolean     start_editing)
7377 {
7378   GtkRBTree *cursor_tree = NULL;
7379   GtkRBNode *cursor_node = NULL;
7380   GtkTreePath *cursor_path = NULL;
7381   GdkModifierType state = 0;
7382   cursor_path = NULL;
7383
7384   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7385     return;
7386
7387   if (tree_view->priv->cursor)
7388     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7389
7390   if (cursor_path == NULL)
7391     return;
7392
7393   _gtk_tree_view_find_node (tree_view, cursor_path,
7394                             &cursor_tree, &cursor_node);
7395
7396   if (cursor_tree == NULL)
7397     {
7398       gtk_tree_path_free (cursor_path);
7399       return;
7400     }
7401
7402   gtk_get_current_event_state (&state);
7403
7404   if (! (state & GDK_SHIFT_MASK) &&
7405       start_editing &&
7406       tree_view->priv->focus_column)
7407     {
7408       if (gtk_tree_view_start_editing (tree_view, cursor_path))
7409         {
7410           gtk_tree_path_free (cursor_path);
7411           return;
7412         }
7413     }
7414   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7415                                             cursor_node,
7416                                             cursor_tree,
7417                                             cursor_path,
7418                                             state,
7419                                             FALSE);
7420
7421   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7422
7423   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7424   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
7425
7426   if (! (state & GDK_SHIFT_MASK))
7427     gtk_tree_view_row_activated (tree_view, cursor_path, tree_view->priv->focus_column);
7428
7429   gtk_tree_path_free (cursor_path);
7430 }
7431
7432 static void
7433 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
7434 {
7435   GtkRBTree *cursor_tree = NULL;
7436   GtkRBNode *cursor_node = NULL;
7437   GtkTreePath *cursor_path = NULL;
7438
7439   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7440     return;
7441
7442   cursor_path = NULL;
7443   if (tree_view->priv->cursor)
7444     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7445
7446   if (cursor_path == NULL)
7447     return;
7448
7449   _gtk_tree_view_find_node (tree_view, cursor_path,
7450                             &cursor_tree, &cursor_node);
7451   if (cursor_tree == NULL)
7452     {
7453       gtk_tree_path_free (cursor_path);
7454       return;
7455     }
7456
7457   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7458                                             cursor_node,
7459                                             cursor_tree,
7460                                             cursor_path,
7461                                             GDK_CONTROL_MASK,
7462                                             FALSE);
7463
7464   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7465
7466   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7467   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7468   gtk_tree_path_free (cursor_path);
7469 }
7470
7471
7472
7473 static void
7474 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
7475                                                gboolean     logical,
7476                                                gboolean     expand,
7477                                                gboolean     open_all)
7478 {
7479   GtkTreePath *cursor_path = NULL;
7480   GtkRBTree *tree;
7481   GtkRBNode *node;
7482
7483   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7484     return;
7485
7486   cursor_path = NULL;
7487   if (tree_view->priv->cursor)
7488     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7489
7490   if (cursor_path == NULL)
7491     return;
7492
7493   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
7494     return;
7495
7496   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7497   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7498
7499   if (expand)
7500     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
7501   else
7502     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
7503
7504   gtk_tree_path_free (cursor_path);
7505 }
7506
7507 static void
7508 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
7509 {
7510   GtkRBTree *cursor_tree = NULL;
7511   GtkRBNode *cursor_node = NULL;
7512   GtkTreePath *cursor_path = NULL;
7513
7514   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7515     return;
7516
7517   cursor_path = NULL;
7518   if (tree_view->priv->cursor)
7519     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7520
7521   if (cursor_path == NULL)
7522     return;
7523
7524   _gtk_tree_view_find_node (tree_view, cursor_path,
7525                             &cursor_tree, &cursor_node);
7526   if (cursor_tree == NULL)
7527     {
7528       gtk_tree_path_free (cursor_path);
7529       return;
7530     }
7531
7532   if (cursor_tree->parent_node)
7533     {
7534       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7535       cursor_node = cursor_tree->parent_node;
7536       cursor_tree = cursor_tree->parent_tree;
7537
7538       gtk_tree_path_up (cursor_path);
7539       gtk_tree_row_reference_free (tree_view->priv->cursor);
7540       tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, cursor_path);
7541       _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7542                                                 cursor_node,
7543                                                 cursor_tree,
7544                                                 cursor_path,
7545                                                 0,
7546                                                 FALSE);
7547     }
7548
7549   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7550
7551   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7552   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7553   gtk_tree_path_free (cursor_path);
7554 }
7555
7556 /* Cut and paste from gtkwindow.c */
7557 static void
7558 send_focus_change (GtkWidget *widget,
7559                    gboolean   in)
7560 {
7561   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
7562
7563   g_object_ref (widget);
7564
7565  if (in)
7566     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
7567   else
7568     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
7569
7570   fevent->focus_change.type = GDK_FOCUS_CHANGE;
7571   fevent->focus_change.window = g_object_ref (widget->window);
7572   fevent->focus_change.in = in;
7573
7574   gtk_widget_event (widget, fevent);
7575
7576   g_object_notify (G_OBJECT (widget), "has_focus");
7577
7578   g_object_unref (widget);
7579   gdk_event_free (fevent);
7580 }
7581
7582 static void
7583 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view)
7584 {
7585   GtkWidget *window;
7586   GtkWidget *entry;
7587   GtkWidget *search_dialog;
7588
7589   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
7590     return;
7591
7592   if (tree_view->priv->enable_search == FALSE ||
7593       tree_view->priv->search_column < 0)
7594     return;
7595
7596   search_dialog = g_object_get_data (G_OBJECT (tree_view),
7597                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
7598   if (search_dialog)
7599     return;
7600
7601   /* set up window */
7602   window = gtk_window_new (GTK_WINDOW_POPUP);
7603   gtk_window_set_title (GTK_WINDOW (window), "search dialog");
7604   gtk_container_set_border_width (GTK_CONTAINER (window), 3);
7605   gtk_window_set_modal (GTK_WINDOW (window), TRUE);
7606   g_signal_connect (window, "delete_event",
7607                     G_CALLBACK (gtk_tree_view_search_delete_event),
7608                     tree_view);
7609   g_signal_connect (window, "key_press_event",
7610                     G_CALLBACK (gtk_tree_view_search_key_press_event),
7611                     tree_view);
7612   g_signal_connect (window, "button_press_event",
7613                     G_CALLBACK (gtk_tree_view_search_button_press_event),
7614                     tree_view);
7615
7616   /* add entry */
7617   entry = gtk_entry_new ();
7618   gtk_widget_show (entry);
7619   g_signal_connect (entry, "changed",
7620                     G_CALLBACK (gtk_tree_view_search_init),
7621                     tree_view);
7622   g_signal_connect (entry, "populate_popup",
7623                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
7624                     tree_view);
7625   gtk_container_add (GTK_CONTAINER (window), entry);
7626
7627   /* done, show it */
7628   tree_view->priv->search_dialog_position_func (tree_view, window);
7629   gtk_widget_show_all (window);
7630   gtk_widget_grab_focus (entry);
7631
7632   /* send focus-in event */
7633   send_focus_change (entry, TRUE);
7634
7635   /* position window */
7636
7637   /* yes, we point to the entry's private text thing here, a bit evil */
7638   g_object_set_data (G_OBJECT (window), "gtk-tree-view-text",
7639                      (gchar *) gtk_entry_get_text (GTK_ENTRY (entry)));
7640   g_object_set_data (G_OBJECT (tree_view),
7641                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY, window);
7642
7643   /* search first matching iter */
7644   gtk_tree_view_search_init (entry, tree_view);
7645 }
7646
7647 /* this function returns the new width of the column being resized given
7648  * the column and x position of the cursor; the x cursor position is passed
7649  * in as a pointer and automagicly corrected if it's beyond min/max limits
7650  */
7651 static gint
7652 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
7653                                 gint       i,
7654                                 gint      *x)
7655 {
7656   GtkTreeViewColumn *column;
7657   gint width;
7658
7659   /* first translate the x position from widget->window
7660    * to clist->clist_window
7661    */
7662
7663   column = g_list_nth (tree_view->priv->columns, i)->data;
7664   width = *x - column->button->allocation.x;
7665
7666   /* Clamp down the value */
7667   if (column->min_width == -1)
7668     width = MAX (column->button->requisition.width,
7669                  width);
7670   else
7671     width = MAX (column->min_width,
7672                  width);
7673   if (column->max_width != -1)
7674     width = MIN (width, column->max_width != -1);
7675   *x = column->button->allocation.x + width;
7676
7677   return width;
7678 }
7679
7680
7681 /* Callbacks */
7682 static void
7683 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
7684                                   GtkTreeView   *tree_view)
7685 {
7686   if (GTK_WIDGET_REALIZED (tree_view))
7687     {
7688       gint dy;
7689
7690       gdk_window_move (tree_view->priv->bin_window,
7691                        - tree_view->priv->hadjustment->value,
7692                        TREE_VIEW_HEADER_HEIGHT (tree_view));
7693       gdk_window_move (tree_view->priv->header_window,
7694                        - tree_view->priv->hadjustment->value,
7695                        0);
7696       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
7697       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
7698
7699       /* update our dy and top_row */
7700       tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
7701       gtk_tree_view_dy_to_top_row (tree_view);
7702       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
7703       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
7704
7705     }
7706 }
7707
7708 \f
7709
7710 /* Public methods
7711  */
7712
7713 /**
7714  * gtk_tree_view_new:
7715  *
7716  * Creates a new #GtkTreeView widget.
7717  *
7718  * Return value: A newly created #GtkTreeView widget.
7719  **/
7720 GtkWidget *
7721 gtk_tree_view_new (void)
7722 {
7723   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
7724 }
7725
7726 /**
7727  * gtk_tree_view_new_with_model:
7728  * @model: the model.
7729  *
7730  * Creates a new #GtkTreeView widget with the model initialized to @model.
7731  *
7732  * Return value: A newly created #GtkTreeView widget.
7733  **/
7734 GtkWidget *
7735 gtk_tree_view_new_with_model (GtkTreeModel *model)
7736 {
7737   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
7738 }
7739
7740 /* Public Accessors
7741  */
7742
7743 /**
7744  * gtk_tree_view_get_model:
7745  * @tree_view: a #GtkTreeView
7746  *
7747  * Returns the model the the #GtkTreeView is based on.  Returns %NULL if the
7748  * model is unset.
7749  *
7750  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
7751  **/
7752 GtkTreeModel *
7753 gtk_tree_view_get_model (GtkTreeView *tree_view)
7754 {
7755   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7756
7757   return tree_view->priv->model;
7758 }
7759
7760 /**
7761  * gtk_tree_view_set_model:
7762  * @tree_view: A #GtkTreeNode.
7763  * @model: The model.
7764  *
7765  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
7766  * set, it will remove it before setting the new model.  If @model is %NULL, then
7767  * it will unset the old model.
7768  **/
7769 void
7770 gtk_tree_view_set_model (GtkTreeView  *tree_view,
7771                          GtkTreeModel *model)
7772 {
7773   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7774
7775   if (model == tree_view->priv->model)
7776     return;
7777
7778   if (tree_view->priv->model)
7779     {
7780       GList *tmplist = tree_view->priv->columns;
7781
7782       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
7783
7784       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
7785                                             gtk_tree_view_row_changed,
7786                                             tree_view);
7787       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
7788                                             gtk_tree_view_row_inserted,
7789                                             tree_view);
7790       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
7791                                             gtk_tree_view_row_has_child_toggled,
7792                                             tree_view);
7793       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
7794                                             gtk_tree_view_row_deleted,
7795                                             tree_view);
7796       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
7797                                             gtk_tree_view_rows_reordered,
7798                                             tree_view);
7799
7800       for (; tmplist; tmplist = tmplist->next)
7801         _gtk_tree_view_column_unset_model (tmplist->data,
7802                                            tree_view->priv->model);
7803
7804       if (tree_view->priv->tree)
7805         {
7806           _gtk_rbtree_free (tree_view->priv->tree);
7807           tree_view->priv->tree = NULL;
7808         }
7809
7810       tree_view->priv->prelight_node = NULL;
7811       tree_view->priv->prelight_tree = NULL;
7812       tree_view->priv->button_pressed_node = NULL;
7813       tree_view->priv->button_pressed_tree = NULL;
7814
7815       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
7816       tree_view->priv->drag_dest_row = NULL;
7817       gtk_tree_row_reference_free (tree_view->priv->cursor);
7818       tree_view->priv->cursor = NULL;
7819       gtk_tree_row_reference_free (tree_view->priv->anchor);
7820       tree_view->priv->anchor = NULL;
7821
7822       g_object_unref (tree_view->priv->model);
7823       tree_view->priv->search_column = -1;
7824       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
7825       tree_view->priv->fixed_height_check = 0;
7826     }
7827
7828   tree_view->priv->model = model;
7829
7830
7831   if (tree_view->priv->model)
7832     {
7833       gint i;
7834       GtkTreePath *path;
7835       GtkTreeIter iter;
7836
7837
7838       if (tree_view->priv->search_column == -1)
7839         {
7840           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
7841             {
7842               if (gtk_tree_model_get_column_type (model, i) == G_TYPE_STRING)
7843                 {
7844                   tree_view->priv->search_column = i;
7845                   break;
7846                 }
7847             }
7848         }
7849       g_object_ref (tree_view->priv->model);
7850       g_signal_connect (tree_view->priv->model,
7851                         "row_changed",
7852                         G_CALLBACK (gtk_tree_view_row_changed),
7853                         tree_view);
7854       g_signal_connect (tree_view->priv->model,
7855                         "row_inserted",
7856                         G_CALLBACK (gtk_tree_view_row_inserted),
7857                         tree_view);
7858       g_signal_connect (tree_view->priv->model,
7859                         "row_has_child_toggled",
7860                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
7861                         tree_view);
7862       g_signal_connect (tree_view->priv->model,
7863                         "row_deleted",
7864                         G_CALLBACK (gtk_tree_view_row_deleted),
7865                         tree_view);
7866       g_signal_connect (tree_view->priv->model,
7867                         "rows_reordered",
7868                         G_CALLBACK (gtk_tree_view_rows_reordered),
7869                         tree_view);
7870
7871       path = gtk_tree_path_new_first ();
7872       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
7873         {
7874           tree_view->priv->tree = _gtk_rbtree_new ();
7875           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
7876         }
7877       gtk_tree_path_free (path);
7878
7879       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
7880       install_presize_handler (tree_view);
7881     }
7882
7883   g_object_notify (G_OBJECT (tree_view), "model");
7884
7885   if (GTK_WIDGET_REALIZED (tree_view))
7886     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7887 }
7888
7889 /**
7890  * gtk_tree_view_get_selection:
7891  * @tree_view: A #GtkTreeView.
7892  *
7893  * Gets the #GtkTreeSelection associated with @tree_view.
7894  *
7895  * Return value: A #GtkTreeSelection object.
7896  **/
7897 GtkTreeSelection *
7898 gtk_tree_view_get_selection (GtkTreeView *tree_view)
7899 {
7900   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7901
7902   return tree_view->priv->selection;
7903 }
7904
7905 /**
7906  * gtk_tree_view_get_hadjustment:
7907  * @tree_view: A #GtkTreeView
7908  *
7909  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
7910  *
7911  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
7912  * used.
7913  **/
7914 GtkAdjustment *
7915 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
7916 {
7917   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7918
7919   if (tree_view->priv->hadjustment == NULL)
7920     gtk_tree_view_set_hadjustment (tree_view, NULL);
7921
7922   return tree_view->priv->hadjustment;
7923 }
7924
7925 /**
7926  * gtk_tree_view_set_hadjustment:
7927  * @tree_view: A #GtkTreeView
7928  * @adjustment: The #GtkAdjustment to set, or %NULL
7929  *
7930  * Sets the #GtkAdjustment for the current horizontal aspect.
7931  **/
7932 void
7933 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
7934                                GtkAdjustment *adjustment)
7935 {
7936   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7937
7938   gtk_tree_view_set_adjustments (tree_view,
7939                                  adjustment,
7940                                  tree_view->priv->vadjustment);
7941
7942   g_object_notify (G_OBJECT (tree_view), "hadjustment");
7943 }
7944
7945 /**
7946  * gtk_tree_view_get_vadjustment:
7947  * @tree_view: A #GtkTreeView
7948  *
7949  * Gets the #GtkAdjustment currently being used for the vertical aspect.
7950  *
7951  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
7952  * used.
7953  **/
7954 GtkAdjustment *
7955 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
7956 {
7957   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7958
7959   if (tree_view->priv->vadjustment == NULL)
7960     gtk_tree_view_set_vadjustment (tree_view, NULL);
7961
7962   return tree_view->priv->vadjustment;
7963 }
7964
7965 /**
7966  * gtk_tree_view_set_vadjustment:
7967  * @tree_view: A #GtkTreeView
7968  * @adjustment: The #GtkAdjustment to set, or %NULL
7969  *
7970  * Sets the #GtkAdjustment for the current vertical aspect.
7971  **/
7972 void
7973 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
7974                                GtkAdjustment *adjustment)
7975 {
7976   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7977
7978   gtk_tree_view_set_adjustments (tree_view,
7979                                  tree_view->priv->hadjustment,
7980                                  adjustment);
7981
7982   g_object_notify (G_OBJECT (tree_view), "vadjustment");
7983 }
7984
7985 /* Column and header operations */
7986
7987 /**
7988  * gtk_tree_view_get_headers_visible:
7989  * @tree_view: A #GtkTreeView.
7990  *
7991  * Returns %TRUE if the headers on the @tree_view are visible.
7992  *
7993  * Return value: Whether the headers are visible or not.
7994  **/
7995 gboolean
7996 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
7997 {
7998   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7999
8000   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
8001 }
8002
8003 /**
8004  * gtk_tree_view_set_headers_visible:
8005  * @tree_view: A #GtkTreeView.
8006  * @headers_visible: %TRUE if the headers are visible
8007  *
8008  * Sets the the visibility state of the headers.
8009  **/
8010 void
8011 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
8012                                    gboolean     headers_visible)
8013 {
8014   gint x, y;
8015   GList *list;
8016   GtkTreeViewColumn *column;
8017
8018   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8019
8020   headers_visible = !! headers_visible;
8021
8022   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
8023     return;
8024
8025   if (headers_visible)
8026     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
8027   else
8028     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
8029
8030   if (GTK_WIDGET_REALIZED (tree_view))
8031     {
8032       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
8033       if (headers_visible)
8034         {
8035           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));
8036
8037           if (GTK_WIDGET_MAPPED (tree_view))
8038             gtk_tree_view_map_buttons (tree_view);
8039         }
8040       else
8041         {
8042           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
8043
8044           for (list = tree_view->priv->columns; list; list = list->next)
8045             {
8046               column = list->data;
8047               gtk_widget_unmap (column->button);
8048             }
8049           gdk_window_hide (tree_view->priv->header_window);
8050         }
8051     }
8052
8053   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
8054   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
8055   tree_view->priv->vadjustment->lower = 0;
8056   tree_view->priv->vadjustment->upper = tree_view->priv->height;
8057   gtk_adjustment_changed (tree_view->priv->vadjustment);
8058
8059   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8060
8061   g_object_notify (G_OBJECT (tree_view), "headers_visible");
8062 }
8063
8064 /**
8065  * gtk_tree_view_columns_autosize:
8066  * @tree_view: A #GtkTreeView.
8067  *
8068  * Resizes all columns to their optimal width. Only works after the
8069  * treeview has been realized.
8070  **/
8071 void
8072 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
8073 {
8074   gboolean dirty = FALSE;
8075   GList *list;
8076   GtkTreeViewColumn *column;
8077
8078   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8079
8080   for (list = tree_view->priv->columns; list; list = list->next)
8081     {
8082       column = list->data;
8083       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8084         continue;
8085       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8086       dirty = TRUE;
8087     }
8088
8089   if (dirty)
8090     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8091 }
8092
8093 /**
8094  * gtk_tree_view_set_headers_clickable:
8095  * @tree_view: A #GtkTreeView.
8096  * @setting: %TRUE if the columns are clickable.
8097  *
8098  * Allow the column title buttons to be clicked.
8099  **/
8100 void
8101 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
8102                                      gboolean   setting)
8103 {
8104   GList *list;
8105
8106   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8107   g_return_if_fail (tree_view->priv->model != NULL);
8108
8109   for (list = tree_view->priv->columns; list; list = list->next)
8110     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
8111
8112   g_object_notify (G_OBJECT (tree_view), "headers_clickable");
8113 }
8114
8115
8116 /**
8117  * gtk_tree_view_set_rules_hint
8118  * @tree_view: a #GtkTreeView
8119  * @setting: %TRUE if the tree requires reading across rows
8120  *
8121  * This function tells GTK+ that the user interface for your
8122  * application requires users to read across tree rows and associate
8123  * cells with one another. By default, GTK+ will then render the tree
8124  * with alternating row colors. Do <emphasis>not</emphasis> use it
8125  * just because you prefer the appearance of the ruled tree; that's a
8126  * question for the theme. Some themes will draw tree rows in
8127  * alternating colors even when rules are turned off, and users who
8128  * prefer that appearance all the time can choose those themes. You
8129  * should call this function only as a <emphasis>semantic</emphasis>
8130  * hint to the theme engine that your tree makes alternating colors
8131  * useful from a functional standpoint (since it has lots of columns,
8132  * generally).
8133  *
8134  **/
8135 void
8136 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
8137                               gboolean      setting)
8138 {
8139   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8140
8141   setting = setting != FALSE;
8142
8143   if (tree_view->priv->has_rules != setting)
8144     {
8145       tree_view->priv->has_rules = setting;
8146       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8147     }
8148
8149   g_object_notify (G_OBJECT (tree_view), "rules_hint");
8150 }
8151
8152 /**
8153  * gtk_tree_view_get_rules_hint
8154  * @tree_view: a #GtkTreeView
8155  *
8156  * Gets the setting set by gtk_tree_view_set_rules_hint().
8157  *
8158  * Return value: %TRUE if rules are useful for the user of this tree
8159  **/
8160 gboolean
8161 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
8162 {
8163   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8164
8165   return tree_view->priv->has_rules;
8166 }
8167
8168 /* Public Column functions
8169  */
8170
8171 /**
8172  * gtk_tree_view_append_column:
8173  * @tree_view: A #GtkTreeView.
8174  * @column: The #GtkTreeViewColumn to add.
8175  *
8176  * Appends @column to the list of columns.
8177  *
8178  * Return value: The number of columns in @tree_view after appending.
8179  **/
8180 gint
8181 gtk_tree_view_append_column (GtkTreeView       *tree_view,
8182                              GtkTreeViewColumn *column)
8183 {
8184   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
8185   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
8186   g_return_val_if_fail (column->tree_view == NULL, -1);
8187
8188   return gtk_tree_view_insert_column (tree_view, column, -1);
8189 }
8190
8191
8192 /**
8193  * gtk_tree_view_remove_column:
8194  * @tree_view: A #GtkTreeView.
8195  * @column: The #GtkTreeViewColumn to remove.
8196  *
8197  * Removes @column from @tree_view.
8198  *
8199  * Return value: The number of columns in @tree_view after removing.
8200  **/
8201 gint
8202 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
8203                              GtkTreeViewColumn *column)
8204 {
8205   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
8206   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
8207   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
8208
8209   _gtk_tree_view_column_unset_tree_view (column);
8210
8211   if (tree_view->priv->focus_column == column)
8212     tree_view->priv->focus_column = NULL;
8213
8214   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
8215   tree_view->priv->n_columns--;
8216
8217   if (GTK_WIDGET_REALIZED (tree_view))
8218     {
8219       GList *list;
8220
8221       _gtk_tree_view_column_unrealize_button (column);
8222       for (list = tree_view->priv->columns; list; list = list->next)
8223         {
8224           GtkTreeViewColumn *tmp_column;
8225
8226           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
8227           if (tmp_column->visible)
8228             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
8229         }
8230
8231       if (tree_view->priv->n_columns == 0 &&
8232           gtk_tree_view_get_headers_visible (tree_view))
8233         gdk_window_hide (tree_view->priv->header_window);
8234
8235       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8236     }
8237
8238   g_object_unref (column);
8239   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
8240
8241   return tree_view->priv->n_columns;
8242 }
8243
8244 /**
8245  * gtk_tree_view_insert_column:
8246  * @tree_view: A #GtkTreeView.
8247  * @column: The #GtkTreeViewColumn to be inserted.
8248  * @position: The position to insert @column in.
8249  *
8250  * This inserts the @column into the @tree_view at @position.  If @position is
8251  * -1, then the column is inserted at the end.
8252  *
8253  * Return value: The number of columns in @tree_view after insertion.
8254  **/
8255 gint
8256 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
8257                              GtkTreeViewColumn *column,
8258                              gint               position)
8259 {
8260   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
8261   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
8262   g_return_val_if_fail (column->tree_view == NULL, -1);
8263
8264   g_object_ref (column);
8265   gtk_object_sink (GTK_OBJECT (column));
8266
8267   if (tree_view->priv->n_columns == 0 &&
8268       GTK_WIDGET_REALIZED (tree_view) &&
8269       gtk_tree_view_get_headers_visible (tree_view))
8270     {
8271       gdk_window_show (tree_view->priv->header_window);
8272     }
8273
8274   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
8275                                             column, position);
8276   tree_view->priv->n_columns++;
8277
8278   _gtk_tree_view_column_set_tree_view (column, tree_view);
8279
8280   if (GTK_WIDGET_REALIZED (tree_view))
8281     {
8282       GList *list;
8283
8284       _gtk_tree_view_column_realize_button (column);
8285
8286       for (list = tree_view->priv->columns; list; list = list->next)
8287         {
8288           column = GTK_TREE_VIEW_COLUMN (list->data);
8289           if (column->visible)
8290             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8291         }
8292       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8293     }
8294
8295   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
8296
8297   return tree_view->priv->n_columns;
8298 }
8299
8300 /**
8301  * gtk_tree_view_insert_column_with_attributes:
8302  * @tree_view: A #GtkTreeView
8303  * @position: The position to insert the new column in.
8304  * @title: The title to set the header to.
8305  * @cell: The #GtkCellRenderer.
8306  * @Varargs: A %NULL-terminated list of attributes.
8307  *
8308  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
8309  * @position.  If @position is -1, then the newly created column is inserted at
8310  * the end.  The column is initialized with the attributes given.
8311  *
8312  * Return value: The number of columns in @tree_view after insertion.
8313  **/
8314 gint
8315 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
8316                                              gint             position,
8317                                              const gchar     *title,
8318                                              GtkCellRenderer *cell,
8319                                              ...)
8320 {
8321   GtkTreeViewColumn *column;
8322   gchar *attribute;
8323   va_list args;
8324   gint column_id;
8325
8326   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
8327
8328   column = gtk_tree_view_column_new ();
8329
8330   gtk_tree_view_column_set_title (column, title);
8331   gtk_tree_view_column_pack_start (column, cell, TRUE);
8332
8333   va_start (args, cell);
8334
8335   attribute = va_arg (args, gchar *);
8336
8337   while (attribute != NULL)
8338     {
8339       column_id = va_arg (args, gint);
8340       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
8341       attribute = va_arg (args, gchar *);
8342     }
8343
8344   va_end (args);
8345
8346   gtk_tree_view_insert_column (tree_view, column, position);
8347
8348   return tree_view->priv->n_columns;
8349 }
8350
8351 /**
8352  * gtk_tree_view_insert_column_with_data_func:
8353  * @tree_view: a #GtkTreeView
8354  * @position: Position to insert, -1 for append
8355  * @title: column title
8356  * @cell: cell renderer for column
8357  * @func: function to set attributes of cell renderer
8358  * @data: data for @func
8359  * @dnotify: destroy notifier for @data
8360  *
8361  * Convenience function that inserts a new column into the #GtkTreeView
8362  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
8363  * attributes (normally using data from the model). See also
8364  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
8365  *
8366  * Return value: number of columns in the tree view post-insert
8367  **/
8368 gint
8369 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
8370                                              gint                       position,
8371                                              const gchar               *title,
8372                                              GtkCellRenderer           *cell,
8373                                              GtkTreeCellDataFunc        func,
8374                                              gpointer                   data,
8375                                              GDestroyNotify             dnotify)
8376 {
8377   GtkTreeViewColumn *column;
8378
8379   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
8380
8381   column = gtk_tree_view_column_new ();
8382
8383   gtk_tree_view_column_set_title (column, title);
8384   gtk_tree_view_column_pack_start (column, cell, TRUE);
8385   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
8386
8387   gtk_tree_view_insert_column (tree_view, column, position);
8388
8389   return tree_view->priv->n_columns;
8390 }
8391
8392 /**
8393  * gtk_tree_view_get_column:
8394  * @tree_view: A #GtkTreeView.
8395  * @n: The position of the column, counting from 0.
8396  *
8397  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
8398  *
8399  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
8400  * range of columns.
8401  **/
8402 GtkTreeViewColumn *
8403 gtk_tree_view_get_column (GtkTreeView *tree_view,
8404                           gint         n)
8405 {
8406   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8407
8408   if (n < 0 || n >= tree_view->priv->n_columns)
8409     return NULL;
8410
8411   if (tree_view->priv->columns == NULL)
8412     return NULL;
8413
8414   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
8415 }
8416
8417 /**
8418  * gtk_tree_view_get_columns:
8419  * @tree_view: A #GtkTreeView
8420  *
8421  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
8422  * The returned list must be freed with g_list_free ().
8423  *
8424  * Return value: A list of #GtkTreeViewColumn s
8425  **/
8426 GList *
8427 gtk_tree_view_get_columns (GtkTreeView *tree_view)
8428 {
8429   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8430
8431   return g_list_copy (tree_view->priv->columns);
8432 }
8433
8434 /**
8435  * gtk_tree_view_move_column_after:
8436  * @tree_view: A #GtkTreeView
8437  * @column: The #GtkTreeViewColumn to be moved.
8438  * @base_column: The #GtkTreeViewColumn to be moved relative to, or %NULL.
8439  *
8440  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
8441  * @column is placed in the first position.
8442  **/
8443 void
8444 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
8445                                  GtkTreeViewColumn *column,
8446                                  GtkTreeViewColumn *base_column)
8447 {
8448   GList *column_list_el, *base_el = NULL;
8449
8450   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8451
8452   column_list_el = g_list_find (tree_view->priv->columns, column);
8453   g_return_if_fail (column_list_el != NULL);
8454
8455   if (base_column)
8456     {
8457       base_el = g_list_find (tree_view->priv->columns, base_column);
8458       g_return_if_fail (base_el != NULL);
8459     }
8460
8461   if (column_list_el->prev == base_el)
8462     return;
8463
8464   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
8465   if (base_el == NULL)
8466     {
8467       column_list_el->prev = NULL;
8468       column_list_el->next = tree_view->priv->columns;
8469       if (column_list_el->next)
8470         column_list_el->next->prev = column_list_el;
8471       tree_view->priv->columns = column_list_el;
8472     }
8473   else
8474     {
8475       column_list_el->prev = base_el;
8476       column_list_el->next = base_el->next;
8477       if (column_list_el->next)
8478         column_list_el->next->prev = column_list_el;
8479       base_el->next = column_list_el;
8480     }
8481
8482   if (GTK_WIDGET_REALIZED (tree_view))
8483     {
8484       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8485       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view));
8486     }
8487
8488   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
8489 }
8490
8491 /**
8492  * gtk_tree_view_set_expander_column:
8493  * @tree_view: A #GtkTreeView
8494  * @column: %NULL, or the column to draw the expander arrow at.
8495  *
8496  * Sets the column to draw the expander arrow at. It must be in @tree_view.  If
8497  * @column is %NULL, then the expander arrow is always at the first visible
8498  * column.
8499  **/
8500 void
8501 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
8502                                    GtkTreeViewColumn *column)
8503 {
8504   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8505   if (column != NULL)
8506     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
8507
8508   if (tree_view->priv->expander_column != column)
8509     {
8510       GList *list;
8511
8512       if (column)
8513         {
8514           /* Confirm that column is in tree_view */
8515           for (list = tree_view->priv->columns; list; list = list->next)
8516             if (list->data == column)
8517               break;
8518           g_return_if_fail (list != NULL);
8519         }
8520
8521       tree_view->priv->expander_column = column;
8522       g_object_notify (G_OBJECT (tree_view), "expander_column");
8523     }
8524 }
8525
8526 /**
8527  * gtk_tree_view_get_expander_column:
8528  * @tree_view: A #GtkTreeView
8529  *
8530  * Returns the column that is the current expander column.  This
8531  * column has the expander arrow drawn next to it.
8532  *
8533  * Return value: The expander column.
8534  **/
8535 GtkTreeViewColumn *
8536 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
8537 {
8538   GList *list;
8539
8540   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8541
8542   for (list = tree_view->priv->columns; list; list = list->next)
8543     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
8544       return (GtkTreeViewColumn *) list->data;
8545   return NULL;
8546 }
8547
8548
8549 /**
8550  * gtk_tree_view_set_column_drag_function:
8551  * @tree_view: A #GtkTreeView.
8552  * @func: A function to determine which columns are reorderable, or %NULL.
8553  * @user_data: User data to be passed to @func, or %NULL
8554  * @destroy: Destroy notifier for @user_data, or %NULL
8555  *
8556  * Sets a user function for determining where a column may be dropped when
8557  * dragged.  This function is called on every column pair in turn at the
8558  * beginning of a column drag to determine where a drop can take place.  The
8559  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
8560  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
8561  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
8562  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
8563  * @tree_view reverts to the default behavior of allowing all columns to be
8564  * dropped everywhere.
8565  **/
8566 void
8567 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
8568                                         GtkTreeViewColumnDropFunc  func,
8569                                         gpointer                   user_data,
8570                                         GtkDestroyNotify           destroy)
8571 {
8572   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8573
8574   if (tree_view->priv->column_drop_func_data_destroy)
8575     (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
8576
8577   tree_view->priv->column_drop_func = func;
8578   tree_view->priv->column_drop_func_data = user_data;
8579   tree_view->priv->column_drop_func_data_destroy = destroy;
8580 }
8581
8582 /**
8583  * gtk_tree_view_scroll_to_point:
8584  * @tree_view: a #GtkTreeView
8585  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
8586  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
8587  *
8588  * Scrolls the tree view such that the top-left corner of the visible
8589  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
8590  * in tree window coordinates.  The @tree_view must be realized before
8591  * this function is called.  If it isn't, you probably want to be
8592  * using gtk_tree_view_scroll_to_cell().
8593  *
8594  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
8595  **/
8596 void
8597 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
8598                                gint         tree_x,
8599                                gint         tree_y)
8600 {
8601   GtkAdjustment *hadj;
8602   GtkAdjustment *vadj;
8603
8604   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8605   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
8606
8607   hadj = tree_view->priv->hadjustment;
8608   vadj = tree_view->priv->vadjustment;
8609
8610   if (tree_x != -1)
8611     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
8612   if (tree_y != -1)
8613     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
8614 }
8615
8616 /**
8617  * gtk_tree_view_scroll_to_cell
8618  * @tree_view: A #GtkTreeView.
8619  * @path: The path of the row to move to, or %NULL.
8620  * @column: The #GtkTreeViewColumn to move horizontally to, or %NULL.
8621  * @use_align: whether to use alignment arguments, or %FALSE.
8622  * @row_align: The vertical alignment of the row specified by @path.
8623  * @col_align: The horizontal alignment of the column specified by @column.
8624  *
8625  * Moves the alignments of @tree_view to the position specified by @column and
8626  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
8627  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
8628  * or @path need to be non-%NULL.  @row_align determines where the row is
8629  * placed, and @col_align determines where @column is placed.  Both are expected
8630  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
8631  * right/bottom alignment, 0.5 means center.
8632  *
8633  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
8634  * tree does the minimum amount of work to scroll the cell onto the screen.
8635  * This means that the cell will be scrolled to the edge closest to it's current
8636  * position.  If the cell is currently visible on the screen, nothing is done.
8637  *
8638  * This function only works if the model is set, and @path is a valid row on the
8639  * model.  If the model changes before the @tree_view is realized, the centered
8640  * path will be modified to reflect this change.
8641  **/
8642 void
8643 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
8644                               GtkTreePath       *path,
8645                               GtkTreeViewColumn *column,
8646                               gboolean           use_align,
8647                               gfloat             row_align,
8648                               gfloat             col_align)
8649 {
8650   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8651   g_return_if_fail (tree_view->priv->model != NULL);
8652   g_return_if_fail (tree_view->priv->tree != NULL);
8653   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
8654   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
8655   g_return_if_fail (path != NULL || column != NULL);
8656
8657 #if 0
8658   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
8659            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
8660 #endif
8661   row_align = CLAMP (row_align, 0.0, 1.0);
8662   col_align = CLAMP (col_align, 0.0, 1.0);
8663
8664
8665   /* Note: Despite the benefits that come from having one code path for the
8666    * scrolling code, we short-circuit validate_visible_area's immplementation as
8667    * it is much slower than just going to the point.
8668    */
8669   if (! GTK_WIDGET_REALIZED (tree_view) ||
8670       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
8671     {
8672       if (tree_view->priv->scroll_to_path)
8673         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
8674
8675       tree_view->priv->scroll_to_path = NULL;
8676       tree_view->priv->scroll_to_column = NULL;
8677
8678       if (path)
8679         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
8680       if (column)
8681         tree_view->priv->scroll_to_column = column;
8682       tree_view->priv->scroll_to_use_align = use_align;
8683       tree_view->priv->scroll_to_row_align = row_align;
8684       tree_view->priv->scroll_to_col_align = col_align;
8685
8686       install_presize_handler (tree_view);
8687     }
8688   else
8689     {
8690       GdkRectangle cell_rect;
8691       GdkRectangle vis_rect;
8692       gint dest_x, dest_y;
8693
8694       gtk_tree_view_get_cell_area (tree_view, path, column, &cell_rect);
8695       gtk_tree_view_widget_to_tree_coords (tree_view, cell_rect.x, cell_rect.y, &(cell_rect.x), &(cell_rect.y));
8696       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
8697
8698       dest_x = vis_rect.x;
8699       dest_y = vis_rect.y;
8700
8701       if (column)
8702         {
8703           if (use_align)
8704             {
8705               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
8706             }
8707           else
8708             {
8709               if (cell_rect.x < vis_rect.x)
8710                 dest_x = cell_rect.x;
8711               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
8712                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
8713             }
8714         }
8715
8716       if (path)
8717         {
8718           if (use_align)
8719             {
8720               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
8721               dest_y = MAX (dest_y, 0);
8722             }
8723           else
8724             {
8725               if (cell_rect.y < vis_rect.y)
8726                 dest_y = cell_rect.y;
8727               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
8728                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
8729             }
8730         }
8731
8732       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
8733     }
8734 }
8735
8736 /**
8737  * gtk_tree_view_row_activated:
8738  * @tree_view: A #GtkTreeView
8739  * @path: The #GtkTreePath to be activated.
8740  * @column: The #GtkTreeViewColumn to be activated.
8741  *
8742  * Activates the cell determined by @path and @column.
8743  **/
8744 void
8745 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
8746                              GtkTreePath       *path,
8747                              GtkTreeViewColumn *column)
8748 {
8749   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8750
8751   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
8752 }
8753
8754
8755 static void
8756 gtk_tree_view_expand_all_helper (GtkRBTree  *tree,
8757                                  GtkRBNode  *node,
8758                                  gpointer  data)
8759 {
8760   GtkTreeView *tree_view = data;
8761
8762   if (node->children)
8763     _gtk_rbtree_traverse (node->children,
8764                           node->children->root,
8765                           G_PRE_ORDER,
8766                           gtk_tree_view_expand_all_helper,
8767                           data);
8768   else if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT && node->children == NULL)
8769     {
8770       GtkTreePath *path;
8771       GtkTreeIter iter;
8772       GtkTreeIter child;
8773
8774       node->children = _gtk_rbtree_new ();
8775       node->children->parent_tree = tree;
8776       node->children->parent_node = node;
8777       path = _gtk_tree_view_find_path (tree_view, tree, node);
8778       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8779       gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
8780       gtk_tree_view_build_tree (tree_view,
8781                                 node->children,
8782                                 &child,
8783                                 gtk_tree_path_get_depth (path) + 1,
8784                                 TRUE);
8785       gtk_tree_path_free (path);
8786     }
8787 }
8788
8789 /**
8790  * gtk_tree_view_expand_all:
8791  * @tree_view: A #GtkTreeView.
8792  *
8793  * Recursively expands all nodes in the @tree_view.
8794  **/
8795 void
8796 gtk_tree_view_expand_all (GtkTreeView *tree_view)
8797 {
8798   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8799
8800   if (tree_view->priv->tree == NULL)
8801     return;
8802
8803   _gtk_rbtree_traverse (tree_view->priv->tree,
8804                         tree_view->priv->tree->root,
8805                         G_PRE_ORDER,
8806                         gtk_tree_view_expand_all_helper,
8807                         tree_view);
8808 }
8809
8810 /* Timeout to animate the expander during expands and collapses */
8811 static gboolean
8812 expand_collapse_timeout (gpointer data)
8813 {
8814   GtkTreeView *tree_view = data;
8815   GtkRBNode *node;
8816   GtkRBTree *tree;
8817   gboolean expanding;
8818   gboolean redraw;
8819
8820   GDK_THREADS_ENTER ();
8821
8822   redraw = FALSE;
8823   expanding = TRUE;
8824
8825   node = tree_view->priv->expanded_collapsed_node;
8826   tree = tree_view->priv->expanded_collapsed_tree;
8827
8828   if (node->children == NULL)
8829     expanding = FALSE;
8830
8831   if (expanding)
8832     {
8833       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
8834         {
8835           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8836           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8837
8838           redraw = TRUE;
8839
8840         }
8841       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
8842         {
8843           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8844
8845           redraw = TRUE;
8846         }
8847     }
8848   else
8849     {
8850       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
8851         {
8852           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8853           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8854
8855           redraw = TRUE;
8856         }
8857       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
8858         {
8859           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8860
8861           redraw = TRUE;
8862
8863         }
8864     }
8865
8866   if (redraw)
8867     {
8868       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
8869
8870       GDK_THREADS_LEAVE ();
8871
8872       return TRUE;
8873     }
8874
8875   GDK_THREADS_LEAVE ();
8876
8877   return FALSE;
8878 }
8879
8880 /**
8881  * gtk_tree_view_collapse_all:
8882  * @tree_view: A #GtkTreeView.
8883  *
8884  * Recursively collapses all visible, expanded nodes in @tree_view.
8885  **/
8886 void
8887 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
8888 {
8889   GtkRBTree *tree;
8890   GtkRBNode *node;
8891   GtkTreePath *path;
8892   gint *indices;
8893
8894   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8895
8896   if (tree_view->priv->tree == NULL)
8897     return;
8898
8899   path = gtk_tree_path_new ();
8900   gtk_tree_path_down (path);
8901   indices = gtk_tree_path_get_indices (path);
8902
8903   tree = tree_view->priv->tree;
8904   node = tree->root;
8905   while (node && node->left != tree->nil)
8906     node = node->left;
8907
8908   while (node)
8909     {
8910       if (node->children)
8911         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
8912       indices[0]++;
8913       node = _gtk_rbtree_next (tree, node);
8914     }
8915
8916   gtk_tree_path_free (path);
8917 }
8918
8919 /**
8920  * gtk_tree_view_expand_to_path:
8921  * @tree_view: A #GtkTreeView.
8922  * @path: path to a row.
8923  *
8924  * Expands the row at @path. This will also expand all parent rows of
8925  * @path as necessary.
8926  **/
8927 void
8928 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
8929                               GtkTreePath *path)
8930 {
8931   gint i, depth;
8932   gint *indices;
8933   GtkTreePath *tmp;
8934
8935   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8936   g_return_if_fail (path != NULL);
8937
8938   depth = gtk_tree_path_get_depth (path);
8939   indices = gtk_tree_path_get_indices (path);
8940
8941   tmp = gtk_tree_path_new ();
8942   g_return_if_fail (tmp != NULL);
8943
8944   for (i = 0; i < depth; i++)
8945     {
8946       gtk_tree_path_append_index (path, indices[i]);
8947       gtk_tree_view_expand_row (tree_view, path, FALSE);
8948     }
8949
8950   gtk_tree_path_free (path);
8951 }
8952
8953 /* FIXME the bool return values for expand_row and collapse_row are
8954  * not analagous; they should be TRUE if the row had children and
8955  * was not already in the requested state.
8956  */
8957
8958
8959 static gboolean
8960 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
8961                                GtkTreePath *path,
8962                                GtkRBTree   *tree,
8963                                GtkRBNode   *node,
8964                                gboolean     open_all,
8965                                gboolean     animate)
8966 {
8967   GtkTreeIter iter;
8968   GtkTreeIter temp;
8969   gboolean expand;
8970
8971   if (node->children && !open_all)
8972     return FALSE;
8973
8974   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
8975     return FALSE;
8976
8977   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8978   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
8979     return FALSE;
8980
8981
8982    if (node->children && open_all)
8983     {
8984       gboolean retval = FALSE;
8985       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
8986
8987       gtk_tree_path_append_index (tmp_path, 0);
8988       tree = node->children;
8989       node = tree->root;
8990       while (node->left != tree->nil)
8991         node = node->left;
8992       /* try to expand the children */
8993       do
8994         {
8995          gboolean t;
8996          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
8997                                             TRUE, animate);
8998          if (t)
8999            retval = TRUE;
9000
9001          gtk_tree_path_next (tmp_path);
9002          node = _gtk_rbtree_next (tree, node);
9003        }
9004       while (node != NULL);
9005
9006       gtk_tree_path_free (tmp_path);
9007
9008       return retval;
9009     }
9010
9011   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
9012
9013   if (expand)
9014     return FALSE;
9015
9016   node->children = _gtk_rbtree_new ();
9017   node->children->parent_tree = tree;
9018   node->children->parent_node = node;
9019
9020   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
9021
9022   gtk_tree_view_build_tree (tree_view,
9023                             node->children,
9024                             &temp,
9025                             gtk_tree_path_get_depth (path) + 1,
9026                             open_all);
9027
9028   if (tree_view->priv->expand_collapse_timeout)
9029     {
9030       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
9031       tree_view->priv->expand_collapse_timeout = 0;
9032     }
9033
9034   if (tree_view->priv->expanded_collapsed_node != NULL)
9035     {
9036       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
9037       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9038
9039       tree_view->priv->expanded_collapsed_node = NULL;
9040     }
9041
9042   if (animate)
9043     {
9044       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
9045       tree_view->priv->expanded_collapsed_node = node;
9046       tree_view->priv->expanded_collapsed_tree = tree;
9047
9048       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9049     }
9050
9051   install_presize_handler (tree_view);
9052
9053   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
9054   return TRUE;
9055 }
9056
9057
9058 /**
9059  * gtk_tree_view_expand_row:
9060  * @tree_view: a #GtkTreeView
9061  * @path: path to a row
9062  * @open_all: whether to recursively expand, or just expand immediate children
9063  *
9064  * Opens the row so its children are visible.
9065  *
9066  * Return value: %TRUE if the row existed and had children
9067  **/
9068 gboolean
9069 gtk_tree_view_expand_row (GtkTreeView *tree_view,
9070                           GtkTreePath *path,
9071                           gboolean     open_all)
9072 {
9073   GtkRBTree *tree;
9074   GtkRBNode *node;
9075
9076   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9077   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
9078   g_return_val_if_fail (path != NULL, FALSE);
9079
9080   if (_gtk_tree_view_find_node (tree_view,
9081                                 path,
9082                                 &tree,
9083                                 &node))
9084     return FALSE;
9085
9086   if (tree != NULL)
9087     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
9088   else
9089     return FALSE;
9090 }
9091
9092 static gboolean
9093 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
9094                                  GtkTreePath *path,
9095                                  GtkRBTree   *tree,
9096                                  GtkRBNode   *node,
9097                                  gboolean     animate)
9098 {
9099   GtkTreeIter iter;
9100   GtkTreeIter children;
9101   gboolean collapse;
9102   gint x, y;
9103   GList *list;
9104   GdkDisplay *display;
9105
9106   if (node->children == NULL)
9107     return FALSE;
9108
9109   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
9110
9111   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
9112
9113   if (collapse)
9114     return FALSE;
9115
9116   /* if the prelighted node is a child of us, we want to unprelight it.  We have
9117    * a chance to prelight the correct node below */
9118
9119   if (tree_view->priv->prelight_tree)
9120     {
9121       GtkRBTree *parent_tree;
9122       GtkRBNode *parent_node;
9123
9124       parent_tree = tree_view->priv->prelight_tree->parent_tree;
9125       parent_node = tree_view->priv->prelight_tree->parent_node;
9126       while (parent_tree)
9127         {
9128           if (parent_tree == tree && parent_node == node)
9129             {
9130               ensure_unprelighted (tree_view);
9131               break;
9132             }
9133           parent_node = parent_tree->parent_node;
9134           parent_tree = parent_tree->parent_tree;
9135         }
9136     }
9137
9138   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
9139
9140   for (list = tree_view->priv->columns; list; list = list->next)
9141     {
9142       GtkTreeViewColumn *column = list->data;
9143
9144       if (column->visible == FALSE)
9145         continue;
9146       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
9147         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
9148     }
9149
9150   if (tree_view->priv->destroy_count_func)
9151     {
9152       GtkTreePath *child_path;
9153       gint child_count = 0;
9154       child_path = gtk_tree_path_copy (path);
9155       gtk_tree_path_down (child_path);
9156       if (node->children)
9157         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
9158       (* tree_view->priv->destroy_count_func) (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
9159       gtk_tree_path_free (child_path);
9160     }
9161
9162   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9163     {
9164       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9165
9166       if (gtk_tree_path_is_ancestor (path, cursor_path))
9167         {
9168           gtk_tree_row_reference_free (tree_view->priv->cursor);
9169           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9170                                                                       tree_view->priv->model,
9171                                                                       path);
9172         }
9173       gtk_tree_path_free (cursor_path);
9174     }
9175
9176   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
9177     {
9178       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
9179       if (gtk_tree_path_is_ancestor (path, anchor_path))
9180         {
9181           gtk_tree_row_reference_free (tree_view->priv->anchor);
9182           tree_view->priv->anchor = NULL;
9183         }
9184       gtk_tree_path_free (anchor_path);
9185     }
9186
9187   if (gtk_tree_row_reference_valid (tree_view->priv->last_button_press))
9188     {
9189       GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press);
9190       if (gtk_tree_path_is_ancestor (path, lsc))
9191         {
9192           gtk_tree_row_reference_free (tree_view->priv->last_button_press);
9193           tree_view->priv->last_button_press = NULL;
9194         }
9195       gtk_tree_path_free (lsc);
9196     }
9197
9198   if (gtk_tree_row_reference_valid (tree_view->priv->last_button_press_2))
9199     {
9200       GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press_2);
9201       if (gtk_tree_path_is_ancestor (path, lsc))
9202         {
9203           gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
9204           tree_view->priv->last_button_press_2 = NULL;
9205         }
9206       gtk_tree_path_free (lsc);
9207     }
9208
9209   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
9210     {
9211       _gtk_rbtree_remove (node->children);
9212       g_signal_emit_by_name (tree_view->priv->selection, "changed");
9213     }
9214   else
9215     _gtk_rbtree_remove (node->children);
9216
9217   if (tree_view->priv->expand_collapse_timeout)
9218     {
9219       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
9220       tree_view->priv->expand_collapse_timeout = 0;
9221     }
9222
9223   if (tree_view->priv->expanded_collapsed_node != NULL)
9224     {
9225       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
9226       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
9227
9228       tree_view->priv->expanded_collapsed_node = NULL;
9229     }
9230
9231   if (animate)
9232     {
9233       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
9234       tree_view->priv->expanded_collapsed_node = node;
9235       tree_view->priv->expanded_collapsed_tree = tree;
9236
9237       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
9238     }
9239
9240   if (GTK_WIDGET_MAPPED (tree_view))
9241     {
9242       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
9243     }
9244
9245   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
9246
9247   /* now that we've collapsed all rows, we want to try to set the prelight
9248    * again. To do this, we fake a motion event and send it to ourselves. */
9249
9250   display = gdk_drawable_get_display (tree_view->priv->bin_window);
9251   if (gdk_display_get_window_at_pointer (display, &x, &y) == tree_view->priv->bin_window)
9252     {
9253       GdkEventMotion event;
9254       event.window = tree_view->priv->bin_window;
9255       event.x = x;
9256       event.y = y;
9257
9258       /* despite the fact this isn't a real event, I'm almost positive it will
9259        * never trigger a drag event.  maybe_drag is the only function that uses
9260        * more than just event.x and event.y. */
9261       gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
9262     }
9263   return TRUE;
9264 }
9265
9266 /**
9267  * gtk_tree_view_collapse_row:
9268  * @tree_view: a #GtkTreeView
9269  * @path: path to a row in the @tree_view
9270  *
9271  * Collapses a row (hides its child rows, if they exist).
9272  *
9273  * Return value: %TRUE if the row was collapsed.
9274  **/
9275 gboolean
9276 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
9277                             GtkTreePath *path)
9278 {
9279   GtkRBTree *tree;
9280   GtkRBNode *node;
9281
9282   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9283   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
9284   g_return_val_if_fail (path != NULL, FALSE);
9285
9286   if (_gtk_tree_view_find_node (tree_view,
9287                                 path,
9288                                 &tree,
9289                                 &node))
9290     return FALSE;
9291
9292   if (tree == NULL || node->children == NULL)
9293     return FALSE;
9294
9295   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
9296 }
9297
9298 static void
9299 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
9300                                         GtkRBTree              *tree,
9301                                         GtkTreePath            *path,
9302                                         GtkTreeViewMappingFunc  func,
9303                                         gpointer                user_data)
9304 {
9305   GtkRBNode *node;
9306
9307   if (tree == NULL || tree->root == NULL)
9308     return;
9309
9310   node = tree->root;
9311
9312   while (node && node->left != tree->nil)
9313     node = node->left;
9314
9315   while (node)
9316     {
9317       if (node->children)
9318         {
9319           (* func) (tree_view, path, user_data);
9320           gtk_tree_path_down (path);
9321           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
9322           gtk_tree_path_up (path);
9323         }
9324       gtk_tree_path_next (path);
9325       node = _gtk_rbtree_next (tree, node);
9326     }
9327 }
9328
9329 /**
9330  * gtk_tree_view_map_expanded_rows:
9331  * @tree_view: A #GtkTreeView
9332  * @func: A function to be called
9333  * @data: User data to be passed to the function.
9334  *
9335  * Calls @func on all expanded rows.
9336  **/
9337 void
9338 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
9339                                  GtkTreeViewMappingFunc  func,
9340                                  gpointer                user_data)
9341 {
9342   GtkTreePath *path;
9343
9344   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9345   g_return_if_fail (func != NULL);
9346
9347   path = gtk_tree_path_new_first ();
9348
9349   gtk_tree_view_map_expanded_rows_helper (tree_view,
9350                                           tree_view->priv->tree,
9351                                           path, func, user_data);
9352
9353   gtk_tree_path_free (path);
9354 }
9355
9356 /**
9357  * gtk_tree_view_row_expanded:
9358  * @tree_view: A #GtkTreeView.
9359  * @path: A #GtkTreePath to test expansion state.
9360  *
9361  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
9362  *
9363  * Return value: %TRUE if #path is expanded.
9364  **/
9365 gboolean
9366 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
9367                             GtkTreePath *path)
9368 {
9369   GtkRBTree *tree;
9370   GtkRBNode *node;
9371
9372   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9373   g_return_val_if_fail (path != NULL, FALSE);
9374
9375   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9376
9377   if (node == NULL)
9378     return FALSE;
9379
9380   return (node->children != NULL);
9381 }
9382
9383 static GtkTargetEntry row_targets[] = {
9384   { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
9385 };
9386
9387
9388 /**
9389  * gtk_tree_view_get_reorderable:
9390  * @tree_view: a #GtkTreeView
9391  *
9392  * Retrieves whether the user can reorder the tree via drag-and-drop. See
9393  * gtk_tree_view_set_reorderable().
9394  *
9395  * Return value: %TRUE if the tree can be reordered.
9396  **/
9397 gboolean
9398 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
9399 {
9400   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9401
9402   return tree_view->priv->reorderable;
9403 }
9404
9405 /**
9406  * gtk_tree_view_set_reorderable:
9407  * @tree_view: A #GtkTreeView.
9408  * @reorderable: %TRUE, if the tree can be reordered.
9409  *
9410  * This function is a convenience function to allow you to reorder models that
9411  * support the #GtkDragSourceIface and the #GtkDragDestIface.  Both
9412  * #GtkTreeStore and #GtkListStore support these.  If @reorderable is %TRUE, then
9413  * the user can reorder the model by dragging and dropping rows.  The
9414  * developer can listen to these changes by connecting to the model's
9415  * signals.
9416  *
9417  * This function does not give you any degree of control over the order -- any
9418  * reorderering is allowed.  If more control is needed, you should probably
9419  * handle drag and drop manually.
9420  **/
9421 void
9422 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
9423                                gboolean     reorderable)
9424 {
9425   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9426
9427   reorderable = reorderable != FALSE;
9428
9429   if (tree_view->priv->reorderable == reorderable)
9430     return;
9431
9432   if (reorderable)
9433     {
9434       gtk_tree_view_enable_model_drag_source (tree_view,
9435                                               GDK_BUTTON1_MASK,
9436                                               row_targets,
9437                                               G_N_ELEMENTS (row_targets),
9438                                               GDK_ACTION_MOVE);
9439       gtk_tree_view_enable_model_drag_dest (tree_view,
9440                                             row_targets,
9441                                             G_N_ELEMENTS (row_targets),
9442                                             GDK_ACTION_MOVE);
9443     }
9444   else
9445     {
9446       gtk_tree_view_unset_rows_drag_source (tree_view);
9447       gtk_tree_view_unset_rows_drag_dest (tree_view);
9448     }
9449
9450   tree_view->priv->reorderable = reorderable;
9451
9452   g_object_notify (G_OBJECT (tree_view), "reorderable");
9453 }
9454
9455 static void
9456 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
9457                                GtkTreePath     *path,
9458                                gboolean         clear_and_select,
9459                                gboolean         clamp_node)
9460 {
9461   GtkRBTree *tree = NULL;
9462   GtkRBNode *node = NULL;
9463   GdkModifierType state = 0;
9464
9465   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9466     {
9467       GtkTreePath *cursor_path;
9468       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9469       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9470       gtk_tree_path_free (cursor_path);
9471     }
9472
9473   gtk_tree_row_reference_free (tree_view->priv->cursor);
9474   gtk_get_current_event_state (&state);
9475
9476   tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9477                                                               tree_view->priv->model,
9478                                                               path);
9479   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9480   if (tree != NULL)
9481     {
9482       if (clear_and_select && !((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK))
9483         _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
9484                                                   node, tree, path,
9485                                                   state, FALSE);
9486       if (clamp_node)
9487         {
9488           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
9489           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
9490         }
9491     }
9492
9493   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9494 }
9495
9496 /**
9497  * gtk_tree_view_get_cursor:
9498  * @tree_view: A #GtkTreeView
9499  * @path: A pointer to be filled with the current cursor path, or %NULL
9500  * @focus_column: A pointer to be filled with the current focus column, or %NULL
9501  *
9502  * Fills in @path and @focus_column with the current path and focus column.  If
9503  * the cursor isn't currently set, then *@path will be %NULL.  If no column
9504  * currently has focus, then *@focus_column will be %NULL.
9505  **/
9506 void
9507 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
9508                           GtkTreePath       **path,
9509                           GtkTreeViewColumn **focus_column)
9510 {
9511   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9512
9513   if (path)
9514     {
9515       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9516         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9517       else
9518         *path = NULL;
9519     }
9520
9521   if (focus_column)
9522     {
9523       *focus_column = tree_view->priv->focus_column;
9524     }
9525 }
9526
9527 /**
9528  * gtk_tree_view_set_cursor:
9529  * @tree_view: A #GtkTreeView
9530  * @path: A #GtkTreePath
9531  * @focus_column: A #GtkTreeViewColumn, or %NULL
9532  * @start_editing: %TRUE if the specified cell should start being edited.
9533  *
9534  * Sets the current keyboard focus to be at @path, and selects it.  This is
9535  * useful when you want to focus the user's attention on a particular row.  If
9536  * @column is not %NULL, then focus is given to the column specified by it.
9537  * Additionally, if @column is specified, and @start_editing is %TRUE, then
9538  * editing should be started in the specified cell.  This function is often
9539  * followed by @gtk_widget_grab_focus (@tree_view) in order to give keyboard
9540  * focus to the widget.  Please note that editing can only happen when the
9541  * widget is realized.
9542  **/
9543 void
9544 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
9545                           GtkTreePath       *path,
9546                           GtkTreeViewColumn *focus_column,
9547                           gboolean           start_editing)
9548 {
9549   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
9550                                     NULL, start_editing);
9551 }
9552
9553 /**
9554  * gtk_tree_view_set_cursor_on_cell:
9555  * @tree_view: A #GtkTreeView
9556  * @path: A #GtkTreePath
9557  * @focus_column: A #GtkTreeViewColumn, or %NULL
9558  * @focus_cell: A #GtkCellRenderer, or %NULL
9559  * @start_editing: %TRUE if the specified cell should start being edited.
9560  *
9561  * Sets the current keyboard focus to be at @path, and selects it.  This is
9562  * useful when you want to focus the user's attention on a particular row.  If
9563  * @focus_column is not %NULL, then focus is given to the column specified by
9564  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
9565  * contains 2 or more editable or activatable cells, then focus is given to
9566  * the cell specified by @focus_cell. Additionally, if @focus_column is
9567  * specified, and @start_editing is %TRUE, then editing should be started in
9568  * the specified cell.  This function is often followed by
9569  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
9570  * widget.  Please note that editing can only happen when the widget is
9571  * realized.
9572  **/
9573 void
9574 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
9575                                   GtkTreePath       *path,
9576                                   GtkTreeViewColumn *focus_column,
9577                                   GtkCellRenderer   *focus_cell,
9578                                   gboolean           start_editing)
9579 {
9580   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9581   g_return_if_fail (path != NULL);
9582   if (focus_column)
9583     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (focus_column));
9584   if (focus_cell)
9585     {
9586       g_return_if_fail (focus_column);
9587       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
9588     }
9589
9590   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
9591
9592   if (focus_column && focus_column->visible)
9593     {
9594       GList *list;
9595       gboolean column_in_tree = FALSE;
9596
9597       for (list = tree_view->priv->columns; list; list = list->next)
9598         if (list->data == focus_column)
9599           {
9600             column_in_tree = TRUE;
9601             break;
9602           }
9603       g_return_if_fail (column_in_tree);
9604       tree_view->priv->focus_column = focus_column;
9605       if (focus_cell)
9606         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
9607       if (start_editing)
9608         gtk_tree_view_start_editing (tree_view, path);
9609     }
9610 }
9611
9612 /**
9613  * gtk_tree_view_get_bin_window:
9614  * @tree_view: A #GtkTreeView
9615  *
9616  * Returns the window that @tree_view renders to.  This is used primarily to
9617  * compare to <literal>event->window</literal> to confirm that the event on
9618  * @tree_view is on the right window.
9619  *
9620  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
9621  **/
9622 GdkWindow *
9623 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
9624 {
9625   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9626
9627   return tree_view->priv->bin_window;
9628 }
9629
9630 /**
9631  * gtk_tree_view_get_path_at_pos:
9632  * @tree_view: A #GtkTreeView.
9633  * @x: The x position to be identified.
9634  * @y: The y position to be identified.
9635  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
9636  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
9637  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
9638  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
9639  *
9640  * Finds the path at the point (@x, @y), relative to widget coordinates.  That
9641  * is, @x and @y are relative to an events coordinates. @x and @y must come
9642  * from an event on the @tree_view only where event->window ==
9643  * gtk_tree_view_get_bin (). It is primarily for things like popup menus.
9644  * If @path is non-%NULL, then it will be filled with the #GtkTreePath at that
9645  * point.  This path should be freed with gtk_tree_path_free().  If @column
9646  * is non-%NULL, then it will be filled with the column at that point.
9647  * @cell_x and @cell_y return the coordinates relative to the cell background
9648  * (i.e. the @background_area passed to gtk_cell_renderer_render()).  This
9649  * function is only meaningful if @tree_view is realized.
9650  *
9651  * Return value: %TRUE if a row exists at that coordinate.
9652  **/
9653 gboolean
9654 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
9655                                gint                x,
9656                                gint                y,
9657                                GtkTreePath       **path,
9658                                GtkTreeViewColumn **column,
9659                                gint               *cell_x,
9660                                gint               *cell_y)
9661 {
9662   GtkRBTree *tree;
9663   GtkRBNode *node;
9664   gint y_offset;
9665
9666   g_return_val_if_fail (tree_view != NULL, FALSE);
9667   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
9668
9669   if (path)
9670     *path = NULL;
9671   if (column)
9672     *column = NULL;
9673
9674   if (tree_view->priv->tree == NULL)
9675     return FALSE;
9676
9677   if (x > tree_view->priv->hadjustment->page_size)
9678     return FALSE;
9679
9680   if (x < 0 || y < 0)
9681     return FALSE;
9682
9683   if (column || cell_x)
9684     {
9685       GtkTreeViewColumn *tmp_column;
9686       GtkTreeViewColumn *last_column = NULL;
9687       GList *list;
9688       gint remaining_x = x;
9689       gboolean found = FALSE;
9690
9691       for (list = tree_view->priv->columns; list; list = list->next)
9692         {
9693           tmp_column = list->data;
9694
9695           if (tmp_column->visible == FALSE)
9696             continue;
9697
9698           last_column = tmp_column;
9699           if (remaining_x <= tmp_column->width)
9700             {
9701               found = TRUE;
9702
9703               if (column)
9704                 *column = tmp_column;
9705
9706               if (cell_x)
9707                 *cell_x = remaining_x;
9708
9709               break;
9710             }
9711           remaining_x -= tmp_column->width;
9712         }
9713
9714       if (!found)
9715         {
9716           if (column)
9717             *column = last_column;
9718
9719           if (cell_x)
9720             *cell_x = last_column->width + remaining_x;
9721         }
9722     }
9723
9724   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
9725                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
9726                                       &tree, &node);
9727
9728   if (tree == NULL)
9729     return FALSE;
9730
9731   if (cell_y)
9732     *cell_y = y_offset;
9733
9734   if (path)
9735     *path = _gtk_tree_view_find_path (tree_view, tree, node);
9736
9737   return TRUE;
9738 }
9739
9740
9741 /**
9742  * gtk_tree_view_get_cell_area:
9743  * @tree_view: a #GtkTreeView
9744  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
9745  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
9746  * @rect: rectangle to fill with cell rect
9747  *
9748  * Fills the bounding rectangle in tree window coordinates for the cell at the
9749  * row specified by @path and the column specified by @column.  If @path is
9750  * %NULL, or points to a path not currently displayed, the @y and @height fields
9751  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
9752  * fields will be filled with 0.  The sum of all cell rects does not cover the
9753  * entire tree; there are extra pixels in between rows, for example. The
9754  * returned rectangle is equivalent to the @cell_area passed to
9755  * gtk_cell_renderer_render().  This function is only valid if #tree_view is
9756  * realized.
9757  **/
9758 void
9759 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
9760                              GtkTreePath        *path,
9761                              GtkTreeViewColumn  *column,
9762                              GdkRectangle       *rect)
9763 {
9764   GtkRBTree *tree = NULL;
9765   GtkRBNode *node = NULL;
9766   gint vertical_separator;
9767   gint horizontal_separator;
9768
9769   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9770   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
9771   g_return_if_fail (rect != NULL);
9772   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
9773   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
9774
9775   gtk_widget_style_get (GTK_WIDGET (tree_view),
9776                         "vertical_separator", &vertical_separator,
9777                         "horizontal_separator", &horizontal_separator,
9778                         NULL);
9779
9780   rect->x = 0;
9781   rect->y = 0;
9782   rect->width = 0;
9783   rect->height = 0;
9784
9785   if (column)
9786     {
9787       rect->x = column->button->allocation.x + horizontal_separator/2;
9788       rect->width = column->button->allocation.width - horizontal_separator;
9789     }
9790
9791   if (path)
9792     {
9793       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9794
9795       /* Get vertical coords */
9796       if ((!ret && tree == NULL) || ret)
9797         return;
9798
9799       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9800       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
9801
9802       if (gtk_tree_view_is_expander_column (tree_view, column) &&
9803           TREE_VIEW_DRAW_EXPANDERS (tree_view))
9804         {
9805           gint depth = gtk_tree_path_get_depth (path) - 1;
9806
9807           rect->x += depth * tree_view->priv->expander_size;
9808           rect->width -= depth * tree_view->priv->expander_size;
9809           rect->width = MAX (rect->width, 0);
9810         }
9811     }
9812 }
9813
9814 /**
9815  * gtk_tree_view_get_background_area:
9816  * @tree_view: a #GtkTreeView
9817  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
9818  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
9819  * @rect: rectangle to fill with cell background rect
9820  *
9821  * Fills the bounding rectangle in tree window coordinates for the cell at the
9822  * row specified by @path and the column specified by @column.  If @path is
9823  * %NULL, or points to a node not found in the tree, the @y and @height fields of
9824  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
9825  * fields will be filled with 0.  The returned rectangle is equivalent to the
9826  * @background_area passed to gtk_cell_renderer_render().  These background
9827  * areas tile to cover the entire tree window (except for the area used for
9828  * header buttons). Contrast with the @cell_area, returned by
9829  * gtk_tree_view_get_cell_area(), which returns only the cell itself, excluding
9830  * surrounding borders and the tree expander area.
9831  *
9832  **/
9833 void
9834 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
9835                                    GtkTreePath        *path,
9836                                    GtkTreeViewColumn  *column,
9837                                    GdkRectangle       *rect)
9838 {
9839   GtkRBTree *tree = NULL;
9840   GtkRBNode *node = NULL;
9841
9842   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9843   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
9844   g_return_if_fail (rect != NULL);
9845
9846   rect->x = 0;
9847   rect->y = 0;
9848   rect->width = 0;
9849   rect->height = 0;
9850
9851   if (path)
9852     {
9853       /* Get vertical coords */
9854
9855       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
9856           tree == NULL)
9857         return;
9858
9859       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9860
9861       rect->height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
9862     }
9863
9864   if (column)
9865     {
9866       gint x2 = 0;
9867
9868       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
9869       rect->width = x2 - rect->x;
9870     }
9871 }
9872
9873 /**
9874  * gtk_tree_view_get_visible_rect:
9875  * @tree_view: a #GtkTreeView
9876  * @visible_rect: rectangle to fill
9877  *
9878  * Fills @visible_rect with the currently-visible region of the
9879  * buffer, in tree coordinates. Convert to widget coordinates with
9880  * gtk_tree_view_tree_to_widget_coords(). Tree coordinates start at
9881  * 0,0 for row 0 of the tree, and cover the entire scrollable area of
9882  * the tree.
9883  **/
9884 void
9885 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
9886                                 GdkRectangle *visible_rect)
9887 {
9888   GtkWidget *widget;
9889
9890   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9891
9892   widget = GTK_WIDGET (tree_view);
9893
9894   if (visible_rect)
9895     {
9896       visible_rect->x = tree_view->priv->hadjustment->value;
9897       visible_rect->y = tree_view->priv->vadjustment->value;
9898       visible_rect->width = widget->allocation.width;
9899       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
9900     }
9901 }
9902
9903 /**
9904  * gtk_tree_view_widget_to_tree_coords:
9905  * @tree_view: a #GtkTreeView
9906  * @wx: widget X coordinate
9907  * @wy: widget Y coordinate
9908  * @tx: return location for tree X coordinate
9909  * @ty: return location for tree Y coordinate
9910  *
9911  * Converts widget coordinates to coordinates for the
9912  * tree window (the full scrollable area of the tree).
9913  *
9914  **/
9915 void
9916 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
9917                                      gint         wx,
9918                                      gint         wy,
9919                                      gint        *tx,
9920                                      gint        *ty)
9921 {
9922   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9923
9924   if (tx)
9925     *tx = wx + tree_view->priv->hadjustment->value;
9926   if (ty)
9927     *ty = wy + tree_view->priv->dy;
9928 }
9929
9930 /**
9931  * gtk_tree_view_tree_to_widget_coords:
9932  * @tree_view: a #GtkTreeView
9933  * @tx: tree X coordinate
9934  * @ty: tree Y coordinate
9935  * @wx: return location for widget X coordinate
9936  * @wy: return location for widget Y coordinate
9937  *
9938  * Converts tree coordinates (coordinates in full scrollable area of the tree)
9939  * to widget coordinates.
9940  *
9941  **/
9942 void
9943 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
9944                                      gint         tx,
9945                                      gint         ty,
9946                                      gint        *wx,
9947                                      gint        *wy)
9948 {
9949   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9950
9951   if (wx)
9952     *wx = tx - tree_view->priv->hadjustment->value;
9953   if (wy)
9954     *wy = ty - tree_view->priv->dy;
9955 }
9956
9957 static void
9958 unset_reorderable (GtkTreeView *tree_view)
9959 {
9960   if (tree_view->priv->reorderable)
9961     {
9962       tree_view->priv->reorderable = FALSE;
9963       g_object_notify (G_OBJECT (tree_view), "reorderable");
9964     }
9965 }
9966
9967 void
9968 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
9969                                         GdkModifierType           start_button_mask,
9970                                         const GtkTargetEntry     *targets,
9971                                         gint                      n_targets,
9972                                         GdkDragAction             actions)
9973 {
9974   TreeViewDragInfo *di;
9975
9976   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9977
9978   di = ensure_info (tree_view);
9979   clear_source_info (di);
9980
9981   di->start_button_mask = start_button_mask;
9982   di->source_target_list = gtk_target_list_new (targets, n_targets);
9983   di->source_actions = actions;
9984
9985   di->source_set = TRUE;
9986
9987   unset_reorderable (tree_view);
9988 }
9989
9990 void
9991 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
9992                                       const GtkTargetEntry     *targets,
9993                                       gint                      n_targets,
9994                                       GdkDragAction             actions)
9995 {
9996   TreeViewDragInfo *di;
9997
9998   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9999
10000   gtk_drag_dest_set (GTK_WIDGET (tree_view),
10001                      0,
10002                      NULL,
10003                      0,
10004                      actions);
10005
10006   di = ensure_info (tree_view);
10007   clear_dest_info (di);
10008
10009   if (targets)
10010     di->dest_target_list = gtk_target_list_new (targets, n_targets);
10011
10012   di->dest_set = TRUE;
10013
10014   unset_reorderable (tree_view);
10015 }
10016
10017 void
10018 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
10019 {
10020   TreeViewDragInfo *di;
10021
10022   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10023
10024   di = get_info (tree_view);
10025
10026   if (di)
10027     {
10028       if (di->source_set)
10029         {
10030           clear_source_info (di);
10031           di->source_set = FALSE;
10032         }
10033
10034       if (!di->dest_set && !di->source_set)
10035         remove_info (tree_view);
10036     }
10037
10038   unset_reorderable (tree_view);
10039 }
10040
10041 void
10042 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
10043 {
10044   TreeViewDragInfo *di;
10045
10046   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10047
10048   di = get_info (tree_view);
10049
10050   if (di)
10051     {
10052       if (di->dest_set)
10053         {
10054           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
10055           clear_dest_info (di);
10056           di->dest_set = FALSE;
10057         }
10058
10059       if (!di->dest_set && !di->source_set)
10060         remove_info (tree_view);
10061     }
10062
10063   unset_reorderable (tree_view);
10064 }
10065
10066 void
10067 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
10068                                  GtkTreePath            *path,
10069                                  GtkTreeViewDropPosition pos)
10070 {
10071   GtkTreePath *current_dest;
10072   /* Note; this function is exported to allow a custom DND
10073    * implementation, so it can't touch TreeViewDragInfo
10074    */
10075
10076   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10077
10078   current_dest = NULL;
10079
10080   if (tree_view->priv->drag_dest_row)
10081     current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
10082
10083   if (tree_view->priv->drag_dest_row)
10084     gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10085
10086   tree_view->priv->drag_dest_pos = pos;
10087
10088   if (path)
10089     {
10090       tree_view->priv->drag_dest_row =
10091         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
10092       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
10093     }
10094   else
10095     tree_view->priv->drag_dest_row = NULL;
10096
10097   if (current_dest)
10098     {
10099       GtkRBTree *tree, *new_tree;
10100       GtkRBNode *node, *new_node;
10101
10102       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
10103       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
10104
10105       if (tree && node)
10106         {
10107           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
10108           if (new_tree && new_node)
10109             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
10110
10111           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
10112           if (new_tree && new_node)
10113             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
10114         }
10115       gtk_tree_path_free (current_dest);
10116     }
10117 }
10118
10119 void
10120 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
10121                                  GtkTreePath             **path,
10122                                  GtkTreeViewDropPosition  *pos)
10123 {
10124   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10125
10126   if (path)
10127     {
10128       if (tree_view->priv->drag_dest_row)
10129         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
10130       else
10131         *path = NULL;
10132     }
10133
10134   if (pos)
10135     *pos = tree_view->priv->drag_dest_pos;
10136 }
10137
10138 gboolean
10139 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
10140                                    gint                     drag_x,
10141                                    gint                     drag_y,
10142                                    GtkTreePath            **path,
10143                                    GtkTreeViewDropPosition *pos)
10144 {
10145   gint cell_y;
10146   gdouble offset_into_row;
10147   gdouble third;
10148   GdkRectangle cell;
10149   GtkTreeViewColumn *column = NULL;
10150   GtkTreePath *tmp_path = NULL;
10151
10152   /* Note; this function is exported to allow a custom DND
10153    * implementation, so it can't touch TreeViewDragInfo
10154    */
10155
10156   g_return_val_if_fail (tree_view != NULL, FALSE);
10157   g_return_val_if_fail (drag_x >= 0, FALSE);
10158   g_return_val_if_fail (drag_y >= 0, FALSE);
10159   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
10160
10161
10162   if (path)
10163     *path = NULL;
10164
10165   if (tree_view->priv->tree == NULL)
10166     return FALSE;
10167
10168   /* If in the top third of a row, we drop before that row; if
10169    * in the bottom third, drop after that row; if in the middle,
10170    * and the row has children, drop into the row.
10171    */
10172
10173   if (!gtk_tree_view_get_path_at_pos (tree_view,
10174                                       drag_x,
10175                                       drag_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
10176                                       &tmp_path,
10177                                       &column,
10178                                       NULL,
10179                                       &cell_y))
10180     return FALSE;
10181
10182   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
10183                                      &cell);
10184
10185   offset_into_row = cell_y;
10186
10187   if (path)
10188     *path = tmp_path;
10189   else
10190     gtk_tree_path_free (tmp_path);
10191
10192   tmp_path = NULL;
10193
10194   third = cell.height / 3.0;
10195
10196   if (pos)
10197     {
10198       if (offset_into_row < third)
10199         {
10200           *pos = GTK_TREE_VIEW_DROP_BEFORE;
10201         }
10202       else if (offset_into_row < (cell.height / 2.0))
10203         {
10204           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
10205         }
10206       else if (offset_into_row < third * 2.0)
10207         {
10208           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
10209         }
10210       else
10211         {
10212           *pos = GTK_TREE_VIEW_DROP_AFTER;
10213         }
10214     }
10215
10216   return TRUE;
10217 }
10218
10219
10220
10221 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
10222 /**
10223  * gtk_tree_view_create_row_drag_icon:
10224  * @tree_view: a #GtkTreeView
10225  * @path: a #GtkTreePath in @tree_view
10226  *
10227  * Creates a #GdkPixmap representation of the row at @path.  This image is used
10228  * for a drag icon.
10229  *
10230  * Return value: a newly-allocated pixmap of the drag icon.
10231  **/
10232 GdkPixmap *
10233 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
10234                                     GtkTreePath  *path)
10235 {
10236   GtkTreeIter   iter;
10237   GtkRBTree    *tree;
10238   GtkRBNode    *node;
10239   gint cell_offset;
10240   GList *list;
10241   GdkRectangle background_area;
10242   GdkRectangle expose_area;
10243   GtkWidget *widget;
10244   gint depth;
10245   /* start drawing inside the black outline */
10246   gint x = 1, y = 1;
10247   GdkDrawable *drawable;
10248   gint bin_window_width;
10249
10250   widget = GTK_WIDGET (tree_view);
10251
10252   depth = gtk_tree_path_get_depth (path);
10253
10254   _gtk_tree_view_find_node (tree_view,
10255                             path,
10256                             &tree,
10257                             &node);
10258
10259   if (tree == NULL)
10260     return NULL;
10261
10262   if (!gtk_tree_model_get_iter (tree_view->priv->model,
10263                                 &iter,
10264                                 path))
10265     return NULL;
10266
10267   cell_offset = x;
10268
10269   background_area.y = y;
10270   background_area.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
10271
10272   gdk_drawable_get_size (tree_view->priv->bin_window,
10273                          &bin_window_width, NULL);
10274
10275   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
10276                              bin_window_width + 2,
10277                              background_area.height + 2,
10278                              -1);
10279
10280   expose_area.x = 0;
10281   expose_area.y = 0;
10282   expose_area.width = bin_window_width + 2;
10283   expose_area.height = background_area.height + 2;
10284
10285   gdk_draw_rectangle (drawable,
10286                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
10287                       TRUE,
10288                       0, 0,
10289                       bin_window_width + 2,
10290                       background_area.height + 2);
10291
10292   for (list = tree_view->priv->columns; list; list = list->next)
10293     {
10294       GtkTreeViewColumn *column = list->data;
10295       GdkRectangle cell_area;
10296       gint vertical_separator;
10297
10298       if (!column->visible)
10299         continue;
10300
10301       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
10302                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
10303                                                node->children?TRUE:FALSE);
10304
10305       background_area.x = cell_offset;
10306       background_area.width = column->width;
10307
10308       cell_area = background_area;
10309
10310       gtk_widget_style_get (widget, "vertical_separator", &vertical_separator, NULL);
10311       cell_area.y += vertical_separator / 2;
10312       cell_area.height -= vertical_separator;
10313
10314       if (gtk_tree_view_is_expander_column (tree_view, column) &&
10315           TREE_VIEW_DRAW_EXPANDERS(tree_view))
10316         {
10317           cell_area.x += depth * tree_view->priv->expander_size;
10318           cell_area.width -= depth * tree_view->priv->expander_size;
10319         }
10320
10321       if (gtk_tree_view_column_cell_is_visible (column))
10322         _gtk_tree_view_column_cell_render (column,
10323                                            drawable,
10324                                            &background_area,
10325                                            &cell_area,
10326                                            &expose_area,
10327                                            0);
10328       cell_offset += column->width;
10329     }
10330
10331   gdk_draw_rectangle (drawable,
10332                       widget->style->black_gc,
10333                       FALSE,
10334                       0, 0,
10335                       bin_window_width + 1,
10336                       background_area.height + 1);
10337
10338   return drawable;
10339 }
10340
10341
10342 /**
10343  * gtk_tree_view_set_destroy_count_func:
10344  * @tree_view: A #GtkTreeView
10345  * @func: Function to be called when a view row is destroyed, or %NULL
10346  * @data: User data to be passed to @func, or %NULL
10347  * @destroy: Destroy notifier for @data, or %NULL
10348  *
10349  * This function should almost never be used.  It is meant for private use by
10350  * ATK for determining the number of visible children that are removed when the
10351  * user collapses a row, or a row is deleted.
10352  **/
10353 void
10354 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
10355                                       GtkTreeDestroyCountFunc  func,
10356                                       gpointer                 data,
10357                                       GtkDestroyNotify         destroy)
10358 {
10359   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10360
10361   if (tree_view->priv->destroy_count_destroy)
10362     (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
10363
10364   tree_view->priv->destroy_count_func = func;
10365   tree_view->priv->destroy_count_data = data;
10366   tree_view->priv->destroy_count_destroy = destroy;
10367 }
10368
10369
10370 /*
10371  * Interactive search
10372  */
10373
10374 /**
10375  * gtk_tree_view_set_enable_search:
10376  * @tree_view: A #GtkTreeView
10377  * @enable_search: %TRUE, if the user can search interactively
10378  *
10379  * If @enable_search is set, then the user can type in text to search through
10380  * the tree interactively.
10381  */
10382 void
10383 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
10384                                  gboolean     enable_search)
10385 {
10386   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10387
10388   enable_search = !!enable_search;
10389
10390   if (tree_view->priv->enable_search != enable_search)
10391     {
10392        tree_view->priv->enable_search = enable_search;
10393        g_object_notify (G_OBJECT (tree_view), "enable_search");
10394     }
10395 }
10396
10397 /**
10398  * gtk_tree_view_get_enable_search:
10399  * @tree_view: A #GtkTreeView
10400  *
10401  * Returns whether or not the tree allows interactive searching.
10402  *
10403  * Return value: whether or not to let the user search interactively
10404  */
10405 gboolean
10406 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
10407 {
10408   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10409
10410   return tree_view->priv->enable_search;
10411 }
10412
10413
10414 /**
10415  * gtk_tree_view_get_search_column:
10416  * @tree_view: A #GtkTreeView
10417  *
10418  * Gets the column searched on by the interactive search code.
10419  *
10420  * Return value: the column the interactive search code searches in.
10421  */
10422 gint
10423 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
10424 {
10425   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
10426
10427   return (tree_view->priv->search_column);
10428 }
10429
10430 /**
10431  * gtk_tree_view_set_search_column:
10432  * @tree_view: A #GtkTreeView
10433  * @column: the column of the model to search in
10434  *
10435  * Sets @column as the column where the interactive search code should
10436  * search in.  Additionally, turns on interactive searching. Note that
10437  * @column refers to a column of the model.
10438  */
10439 void
10440 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
10441                                  gint         column)
10442 {
10443   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10444   g_return_if_fail (column >= 0);
10445
10446   if (tree_view->priv->search_column == column)
10447     return;
10448
10449   tree_view->priv->search_column = column;
10450   g_object_notify (G_OBJECT (tree_view), "search_column");
10451 }
10452
10453 /**
10454  * gtk_tree_view_get_search_equal_func:
10455  * @tree_view: A #GtkTreeView
10456  *
10457  * Returns the compare function currently in use.
10458  *
10459  * Return value: the currently used compare function for the search code.
10460  */
10461
10462 GtkTreeViewSearchEqualFunc
10463 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
10464 {
10465   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10466
10467   return tree_view->priv->search_equal_func;
10468 }
10469
10470 /**
10471  * gtk_tree_view_set_search_equal_func:
10472  * @tree_view: A #GtkTreeView
10473  * @search_equal_func: the compare function to use during the search
10474  * @search_user_data: user data to pass to @search_equal_func, or %NULL
10475  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
10476  *
10477  * Sets the compare function for the interactive search capabilities.
10478  **/
10479 void
10480 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
10481                                      GtkTreeViewSearchEqualFunc  search_equal_func,
10482                                      gpointer                    search_user_data,
10483                                      GtkDestroyNotify            search_destroy)
10484 {
10485   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10486   g_return_if_fail (search_equal_func !=NULL);
10487
10488   if (tree_view->priv->search_destroy)
10489     (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
10490
10491   tree_view->priv->search_equal_func = search_equal_func;
10492   tree_view->priv->search_user_data = search_user_data;
10493   tree_view->priv->search_destroy = search_destroy;
10494   if (tree_view->priv->search_equal_func == NULL)
10495     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
10496 }
10497
10498 static void
10499 gtk_tree_view_search_dialog_destroy (GtkWidget   *search_dialog,
10500                                      GtkTreeView *tree_view)
10501 {
10502   GtkEntry *entry = (GtkEntry *)(gtk_container_get_children (GTK_CONTAINER (search_dialog)))->data;
10503   gint *selected_iter;
10504
10505   if (tree_view->priv->disable_popdown)
10506     return;
10507
10508   if (entry)
10509     {
10510       /* send focus-in event */
10511       send_focus_change (GTK_WIDGET (entry), FALSE);
10512     }
10513
10514   /* remove data from tree_view */
10515   g_object_set_data (G_OBJECT (tree_view), GTK_TREE_VIEW_SEARCH_DIALOG_KEY,
10516                      NULL);
10517
10518   selected_iter = g_object_get_data (G_OBJECT (search_dialog),
10519                                      "gtk-tree-view-selected-iter");
10520   if (selected_iter)
10521     g_free (selected_iter);
10522   g_object_set_data (G_OBJECT (search_dialog), "gtk-tree-view-selected-iter",
10523                      NULL);
10524
10525   gtk_widget_destroy (search_dialog);
10526 }
10527
10528 static void
10529 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
10530                                     GtkWidget   *search_dialog)
10531 {
10532   gint x, y;
10533   gint tree_x, tree_y;
10534   gint tree_width, tree_height;
10535   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
10536   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
10537   GtkRequisition requisition;
10538
10539   gtk_widget_realize (search_dialog);
10540
10541   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
10542   gdk_drawable_get_size (tree_window,
10543                          &tree_width,
10544                          &tree_height);
10545   gtk_widget_size_request (search_dialog, &requisition);
10546
10547   if (tree_x + tree_width - requisition.width > gdk_screen_get_width (screen))
10548     x = gdk_screen_get_width (screen) - requisition.width;
10549   else if (tree_x + tree_width - requisition.width < 0)
10550     x = 0;
10551   else
10552     x = tree_x + tree_width - requisition.width;
10553
10554   if (tree_y + tree_height > gdk_screen_get_height (screen))
10555     y = gdk_screen_get_height (screen) - requisition.height;
10556   else if (tree_y + tree_height < 0) /* isn't really possible ... */
10557     y = 0;
10558   else
10559     y = tree_y + tree_height;
10560
10561   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
10562 }
10563
10564 static void
10565 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
10566                                       GtkMenu  *menu,
10567                                       gpointer  data)
10568 {
10569   GtkTreeView *tree_view = (GtkTreeView *)data;
10570
10571   tree_view->priv->disable_popdown = 1;
10572   g_signal_connect (menu, "hide",
10573                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
10574 }
10575
10576 static gboolean
10577 gtk_tree_view_real_search_enable_popdown (gpointer data)
10578 {
10579   GtkTreeView *tree_view = (GtkTreeView *)data;
10580
10581   GDK_THREADS_ENTER ();
10582
10583   tree_view->priv->disable_popdown = 0;
10584
10585   GDK_THREADS_LEAVE ();
10586
10587   return FALSE;
10588 }
10589
10590 static void
10591 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
10592                                      gpointer   data)
10593 {
10594   g_timeout_add (200, gtk_tree_view_real_search_enable_popdown, data);
10595 }
10596
10597 static gboolean
10598 gtk_tree_view_search_delete_event (GtkWidget *widget,
10599                                    GdkEventAny *event,
10600                                    GtkTreeView *tree_view)
10601 {
10602   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10603
10604   gtk_tree_view_search_dialog_destroy (widget, tree_view);
10605
10606   return TRUE;
10607 }
10608
10609 static gboolean
10610 gtk_tree_view_search_button_press_event (GtkWidget *widget,
10611                                          GdkEventButton *event,
10612                                          GtkTreeView *tree_view)
10613 {
10614   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10615
10616   gtk_tree_view_search_dialog_destroy (widget, tree_view);
10617
10618   return TRUE;
10619 }
10620
10621 static gboolean
10622 gtk_tree_view_search_key_press_event (GtkWidget *widget,
10623                                       GdkEventKey *event,
10624                                       GtkTreeView *tree_view)
10625 {
10626   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10627   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10628
10629   /* close window */
10630   if (event->keyval == GDK_Escape ||
10631       event->keyval == GDK_Return ||
10632       event->keyval == GDK_Tab)
10633     {
10634       gtk_tree_view_search_dialog_destroy (widget, tree_view);
10635       return TRUE;
10636     }
10637
10638   /* select previous matching iter */
10639   if (event->keyval == GDK_Up)
10640     {
10641       gtk_tree_view_search_move (widget, tree_view, TRUE);
10642       return TRUE;
10643     }
10644
10645   /* select next matching iter */
10646   if (event->keyval == GDK_Down)
10647     {
10648       gtk_tree_view_search_move (widget, tree_view, FALSE);
10649       return TRUE;
10650     }
10651
10652   return FALSE;
10653 }
10654
10655 static void
10656 gtk_tree_view_search_move (GtkWidget   *window,
10657                            GtkTreeView *tree_view,
10658                            gboolean     up)
10659 {
10660   gboolean ret;
10661   gint *selected_iter;
10662   gint len;
10663   gint count = 0;
10664   gchar *text;
10665   GtkTreeIter iter;
10666   GtkTreeModel *model;
10667   GtkTreeSelection *selection;
10668
10669   text = g_object_get_data (G_OBJECT (window), "gtk-tree-view-text");
10670   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
10671
10672   g_return_if_fail (text != NULL);
10673
10674   if (!selected_iter || (up && *selected_iter == 1))
10675     return;
10676
10677   len = strlen (text);
10678
10679   if (len < 1)
10680     return;
10681
10682   model = gtk_tree_view_get_model (tree_view);
10683   selection = gtk_tree_view_get_selection (tree_view);
10684
10685   /* search */
10686   gtk_tree_selection_unselect_all (selection);
10687   gtk_tree_model_get_iter_first (model, &iter);
10688
10689   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
10690                                    &count, up?((*selected_iter) - 1):((*selected_iter + 1)));
10691
10692   if (ret)
10693     {
10694       /* found */
10695       *selected_iter += up?(-1):(1);
10696     }
10697   else
10698     {
10699       /* return to old iter */
10700       count = 0;
10701       gtk_tree_model_get_iter_first (model, &iter);
10702       gtk_tree_view_search_iter (model, selection,
10703                                  &iter, text,
10704                                  &count, *selected_iter);
10705     }
10706 }
10707
10708 static gboolean
10709 gtk_tree_view_search_equal_func (GtkTreeModel *model,
10710                                  gint          column,
10711                                  const gchar  *key,
10712                                  GtkTreeIter  *iter,
10713                                  gpointer      search_data)
10714 {
10715   gboolean retval = TRUE;
10716   gchar *normalized_string;
10717   gchar *normalized_key;
10718   gchar *case_normalized_string;
10719   gchar *case_normalized_key;
10720   GValue value = {0,};
10721   gint key_len;
10722
10723   gtk_tree_model_get_value (model, iter, column, &value);
10724   normalized_string = g_utf8_normalize (g_value_get_string (&value), -1, G_NORMALIZE_ALL);
10725   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
10726   case_normalized_string = g_utf8_casefold (normalized_string, -1);
10727   case_normalized_key = g_utf8_casefold (normalized_key, -1);
10728
10729   key_len = strlen (case_normalized_key);
10730
10731   if (!strncmp (case_normalized_key, case_normalized_string, key_len))
10732     retval = FALSE;
10733
10734   g_value_unset (&value);
10735   g_free (normalized_key);
10736   g_free (normalized_string);
10737   g_free (case_normalized_key);
10738   g_free (case_normalized_string);
10739
10740   return retval;
10741 }
10742
10743 static gboolean
10744 gtk_tree_view_search_iter (GtkTreeModel     *model,
10745                            GtkTreeSelection *selection,
10746                            GtkTreeIter      *iter,
10747                            const gchar      *text,
10748                            gint             *count,
10749                            gint              n)
10750 {
10751   GtkRBTree *tree = NULL;
10752   GtkRBNode *node = NULL;
10753   GtkTreePath *path;
10754
10755   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
10756
10757   path = gtk_tree_model_get_path (model, iter);
10758   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10759
10760   do
10761     {
10762       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
10763         {
10764           (*count)++;
10765           if (*count == n)
10766             {
10767               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
10768                                             TRUE, 0.5, 0.0);
10769               gtk_tree_selection_select_iter (selection, iter);
10770               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
10771
10772               if (path)
10773                 gtk_tree_path_free (path);
10774
10775               return TRUE;
10776             }
10777         }
10778
10779       if (node->children)
10780         {
10781           gboolean has_child;
10782           GtkTreeIter tmp;
10783
10784           tree = node->children;
10785           node = tree->root;
10786
10787           while (node->left != tree->nil)
10788             node = node->left;
10789
10790           tmp = *iter;
10791           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
10792           gtk_tree_path_down (path);
10793
10794           /* sanity check */
10795           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
10796         }
10797       else
10798         {
10799           gboolean done = FALSE;
10800
10801           do
10802             {
10803               node = _gtk_rbtree_next (tree, node);
10804
10805               if (node)
10806                 {
10807                   gboolean has_next;
10808
10809                   has_next = gtk_tree_model_iter_next (model, iter);
10810
10811                   done = TRUE;
10812                   gtk_tree_path_next (path);
10813
10814                   /* sanity check */
10815                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
10816                 }
10817               else
10818                 {
10819                   gboolean has_parent;
10820                   GtkTreeIter tmp_iter = *iter;
10821
10822                   node = tree->parent_node;
10823                   tree = tree->parent_tree;
10824
10825                   if (!tree)
10826                     {
10827                       if (path)
10828                         gtk_tree_path_free (path);
10829
10830                       /* we've run out of tree, done with this func */
10831                       return FALSE;
10832                     }
10833
10834                   has_parent = gtk_tree_model_iter_parent (model,
10835                                                            iter,
10836                                                            &tmp_iter);
10837                   gtk_tree_path_up (path);
10838
10839                   /* sanity check */
10840                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
10841                 }
10842             }
10843           while (!done);
10844         }
10845     }
10846   while (1);
10847
10848   return FALSE;
10849 }
10850
10851 static void
10852 gtk_tree_view_search_init (GtkWidget   *entry,
10853                            GtkTreeView *tree_view)
10854 {
10855   gint ret;
10856   gint *selected_iter;
10857   gint len;
10858   gint count = 0;
10859   const gchar *text;
10860   GtkWidget *window;
10861   GtkTreeIter iter;
10862   GtkTreeModel *model;
10863   GtkTreeSelection *selection;
10864
10865   g_return_if_fail (GTK_IS_ENTRY (entry));
10866   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10867
10868   window = gtk_widget_get_parent (entry);
10869   text = gtk_entry_get_text (GTK_ENTRY (entry));
10870   len = strlen (text);
10871   model = gtk_tree_view_get_model (tree_view);
10872   selection = gtk_tree_view_get_selection (tree_view);
10873
10874   /* search */
10875   gtk_tree_selection_unselect_all (selection);
10876   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
10877   if (selected_iter)
10878     g_free (selected_iter);
10879   g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter", NULL);
10880
10881   if (len < 1)
10882     return;
10883
10884   gtk_tree_model_get_iter_first (model, &iter);
10885
10886   ret = gtk_tree_view_search_iter (model, selection,
10887                                    &iter, text,
10888                                    &count, 1);
10889
10890   if (ret)
10891     {
10892       selected_iter = g_malloc (sizeof (int));
10893       *selected_iter = 1;
10894       g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter",
10895                          selected_iter);
10896     }
10897 }
10898
10899 static void
10900 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
10901                              GtkTreeView     *tree_view)
10902 {
10903   if (tree_view->priv->edited_column == NULL)
10904     return;
10905
10906   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
10907   tree_view->priv->edited_column = NULL;
10908
10909   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10910
10911   gtk_container_remove (GTK_CONTAINER (tree_view),
10912                         GTK_WIDGET (cell_editable));
10913 }
10914
10915 static gboolean
10916 gtk_tree_view_start_editing (GtkTreeView *tree_view,
10917                              GtkTreePath *cursor_path)
10918 {
10919   GtkTreeIter iter;
10920   GdkRectangle background_area;
10921   GdkRectangle cell_area;
10922   GtkCellEditable *editable_widget = NULL;
10923   gchar *path_string;
10924   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
10925   gint retval = FALSE;
10926   GtkRBTree *cursor_tree;
10927   GtkRBNode *cursor_node;
10928
10929   g_assert (tree_view->priv->focus_column);
10930
10931   if (! GTK_WIDGET_REALIZED (tree_view))
10932     return FALSE;
10933
10934   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
10935       cursor_node == NULL)
10936     return FALSE;
10937
10938   path_string = gtk_tree_path_to_string (cursor_path);
10939   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
10940
10941   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
10942
10943   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10944                                            tree_view->priv->model,
10945                                            &iter,
10946                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10947                                            cursor_node->children?TRUE:FALSE);
10948   gtk_tree_view_get_background_area (tree_view,
10949                                      cursor_path,
10950                                      tree_view->priv->focus_column,
10951                                      &background_area);
10952   gtk_tree_view_get_cell_area (tree_view,
10953                                cursor_path,
10954                                tree_view->priv->focus_column,
10955                                &cell_area);
10956   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
10957                                         &editable_widget,
10958                                         NULL,
10959                                         path_string,
10960                                         &background_area,
10961                                         &cell_area,
10962                                         flags))
10963     {
10964       retval = TRUE;
10965       if (editable_widget != NULL)
10966         {
10967           gint left, right;
10968           GdkRectangle area;
10969           GtkCellRenderer *cell;
10970
10971           area = cell_area;
10972           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
10973           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
10974
10975           area.x += left;
10976           area.width -= right + left;
10977
10978           gtk_tree_view_real_start_editing (tree_view,
10979                                             tree_view->priv->focus_column,
10980                                             cursor_path,
10981                                             editable_widget,
10982                                             &area,
10983                                             NULL,
10984                                             flags);
10985         }
10986
10987     }
10988   g_free (path_string);
10989   return retval;
10990 }
10991
10992 static void
10993 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
10994                                   GtkTreeViewColumn *column,
10995                                   GtkTreePath       *path,
10996                                   GtkCellEditable   *cell_editable,
10997                                   GdkRectangle      *cell_area,
10998                                   GdkEvent          *event,
10999                                   guint              flags)
11000 {
11001   gint pre_val = tree_view->priv->vadjustment->value;
11002
11003   tree_view->priv->edited_column = column;
11004   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
11005
11006   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
11007
11008   cell_area->y += pre_val - tree_view->priv->vadjustment->value;
11009
11010   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
11011   gtk_tree_view_put (tree_view,
11012                      GTK_WIDGET (cell_editable),
11013                      cell_area->x, cell_area->y, cell_area->width, cell_area->height);
11014   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
11015                                    (GdkEvent *)event);
11016   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
11017   g_signal_connect (cell_editable, "remove_widget",
11018                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
11019 }
11020
11021 static void
11022 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
11023                             gboolean     cancel_editing)
11024 {
11025   GtkTreeViewColumn *column;
11026
11027   if (tree_view->priv->edited_column == NULL)
11028     return;
11029
11030   /*
11031    * This is very evil. We need to do this, because
11032    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
11033    * later on. If gtk_tree_view_row_changed notices
11034    * tree_view->priv->edited_column != NULL, it'll call
11035    * gtk_tree_view_stop_editing again. Bad things will happen then.
11036    *
11037    * Please read that again if you intend to modify anything here.
11038    */
11039
11040   column = tree_view->priv->edited_column;
11041   tree_view->priv->edited_column = NULL;
11042
11043   if (! cancel_editing)
11044     gtk_cell_editable_editing_done (column->editable_widget);
11045
11046   tree_view->priv->edited_column = column;
11047
11048   gtk_cell_editable_remove_widget (column->editable_widget);
11049 }