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