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_NUM_ROWS_PER_IDLE 50
  46 #define SCROLL_EDGE_SIZE 15
  47 #define EXPANDER_EXTRA_PADDING 4
  48
  49 /* The "background" areas of all rows/cells add up to cover the entire tree.
  50  * The background includes all inter-row and inter-cell spacing.
  51  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  52  * i.e. just the cells, no spacing.
  53  */
  54
  55 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  56 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  57
  58 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  59 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  60
  61 /* This is in Window coordinates */
  62 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  63 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  64
  65
  66 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  67 struct _GtkTreeViewChild
  68 {
  69   GtkWidget *widget;
  70   gint x;
  71   gint y;
  72   gint width;
  73   gint height;
  74 };
  75
  76
  77 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  78 struct _TreeViewDragInfo
  79 {
  80   GdkModifierType start_button_mask;
  81   GtkTargetList *source_target_list;
  82   GdkDragAction source_actions;
  83
  84   GtkTargetList *dest_target_list;
  85
  86   guint source_set : 1;
  87   guint dest_set : 1;
  88 };
  89
  90
  91 /* Signals */
  92 enum
  93 {
  94   ROW_ACTIVATED,
  95   TEST_EXPAND_ROW,
  96   TEST_COLLAPSE_ROW,
  97   ROW_EXPANDED,
  98   ROW_COLLAPSED,
  99   COLUMNS_CHANGED,
 100   CURSOR_CHANGED,
 101   MOVE_CURSOR,
 102   SELECT_ALL,
 103   UNSELECT_ALL,
 104   SELECT_CURSOR_ROW,
 105   TOGGLE_CURSOR_ROW,
 106   EXPAND_COLLAPSE_CURSOR_ROW,
 107   SELECT_CURSOR_PARENT,
 108   START_INTERACTIVE_SEARCH,
 109   FOCUS_COLUMN_HEADER,
 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_style_set            (GtkWidget        *widget,
 174                                                     GtkStyle         *previous_style);
 175
 176 /* container signals */
 177 static void     gtk_tree_view_remove               (GtkContainer     *container,
 178                                                     GtkWidget        *widget);
 179 static void     gtk_tree_view_forall               (GtkContainer     *container,
 180                                                     gboolean          include_internals,
 181                                                     GtkCallback       callback,
 182                                                     gpointer          callback_data);
 183
 184 /* Source side drag signals */
 185 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 186                                             GdkDragContext   *context);
 187 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 188                                             GdkDragContext   *context);
 189 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 190                                             GdkDragContext   *context,
 191                                             GtkSelectionData *selection_data,
 192                                             guint             info,
 193                                             guint             time);
 194 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 195                                             GdkDragContext   *context);
 196
 197 /* Target side drag signals */
 198 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 199                                                   GdkDragContext   *context,
 200                                                   guint             time);
 201 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 202                                                   GdkDragContext   *context,
 203                                                   gint              x,
 204                                                   gint              y,
 205                                                   guint             time);
 206 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 207                                                   GdkDragContext   *context,
 208                                                   gint              x,
 209                                                   gint              y,
 210                                                   guint             time);
 211 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 212                                                   GdkDragContext   *context,
 213                                                   gint              x,
 214                                                   gint              y,
 215                                                   GtkSelectionData *selection_data,
 216                                                   guint             info,
 217                                                   guint             time);
 218
 219 /* tree_model signals */
 220 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 221                                                            GtkAdjustment   *hadj,
 222                                                            GtkAdjustment   *vadj);
 223 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 224                                                            GtkMovementStep  step,
 225                                                            gint             count);
 226 static void gtk_tree_view_real_select_all                 (GtkTreeView     *tree_view);
 227 static void gtk_tree_view_real_unselect_all               (GtkTreeView     *tree_view);
 228 static void gtk_tree_view_real_select_cursor_row          (GtkTreeView     *tree_view,
 229                                                            gboolean         start_editing);
 230 static void gtk_tree_view_real_toggle_cursor_row          (GtkTreeView     *tree_view);
 231 static void gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 232                                                            gboolean         logical,
 233                                                            gboolean         expand,
 234                                                            gboolean         open_all);
 235 static void gtk_tree_view_real_select_cursor_parent       (GtkTreeView     *tree_view);
 236 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 237                                                            GtkTreePath     *path,
 238                                                            GtkTreeIter     *iter,
 239                                                            gpointer         data);
 240 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 241                                                            GtkTreePath     *path,
 242                                                            GtkTreeIter     *iter,
 243                                                            gpointer         data);
 244 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 245                                                            GtkTreePath     *path,
 246                                                            GtkTreeIter     *iter,
 247                                                            gpointer         data);
 248 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 249                                                            GtkTreePath     *path,
 250                                                            gpointer         data);
 251 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 252                                                            GtkTreePath     *parent,
 253                                                            GtkTreeIter     *iter,
 254                                                            gint            *new_order,
 255                                                            gpointer         data);
 256
 257 /* Incremental reflow */
 258 static gboolean validate_row             (GtkTreeView *tree_view,
 259                                           GtkRBTree   *tree,
 260                                           GtkRBNode   *node,
 261                                           GtkTreeIter *iter,
 262                                           GtkTreePath *path);
 263 static void     validate_visible_area    (GtkTreeView *tree_view);
 264 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 265 static gboolean presize_handler_callback (gpointer     data);
 266 static void     install_presize_handler  (GtkTreeView *tree_view);
 267 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 268 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 269
 270
 271 /* Internal functions */
 272 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView       *tree_view,
 273                                                               GtkTreeViewColumn *column);
 274 static void     gtk_tree_view_add_move_binding               (GtkBindingSet     *binding_set,
 275                                                               guint              keyval,
 276                                                               guint              modmask,
 277                                                               GtkMovementStep    step,
 278                                                               gint               count);
 279 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView       *tree_view,
 280                                                               GtkRBTree         *tree);
 281 static void     gtk_tree_view_queue_draw_path                (GtkTreeView       *tree_view,
 282                                                               GtkTreePath       *path,
 283                                                               GdkRectangle      *clip_rect);
 284 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView       *tree_view,
 285                                                               GtkRBTree         *tree,
 286                                                               GtkRBNode         *node,
 287                                                               GdkRectangle      *clip_rect);
 288 static void     gtk_tree_view_draw_arrow                     (GtkTreeView       *tree_view,
 289                                                               GtkRBTree         *tree,
 290                                                               GtkRBNode         *node,
 291                                                               gint               x,
 292                                                               gint               y);
 293 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView       *tree_view,
 294                                                               GtkRBTree         *tree,
 295                                                               gint              *x1,
 296                                                               gint              *x2);
 297 static gint     gtk_tree_view_new_column_width               (GtkTreeView       *tree_view,
 298                                                               gint               i,
 299                                                               gint              *x);
 300 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment     *adjustment,
 301                                                               GtkTreeView       *tree_view);
 302 static void     gtk_tree_view_build_tree                     (GtkTreeView       *tree_view,
 303                                                               GtkRBTree         *tree,
 304                                                               GtkTreeIter       *iter,
 305                                                               gint               depth,
 306                                                               gboolean           recurse);
 307 static gboolean gtk_tree_view_discover_dirty_iter            (GtkTreeView       *tree_view,
 308                                                               GtkTreeIter       *iter,
 309                                                               gint               depth,
 310                                                               gint              *height,
 311                                                               GtkRBNode         *node);
 312 static void     gtk_tree_view_discover_dirty                 (GtkTreeView       *tree_view,
 313                                                               GtkRBTree         *tree,
 314                                                               GtkTreeIter       *iter,
 315                                                               gint               depth);
 316 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView       *tree_view,
 317                                                               GtkRBTree         *tree,
 318                                                               GtkRBNode         *node);
 319 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView       *tree_view,
 320                                                               GtkTreeViewColumn *column);
 321 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView       *tree_view,
 322                                                               GdkEventMotion    *event);
 323 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView       *tree_view);
 324 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView       *tree_view,
 325                                                               gint               count);
 326 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView       *tree_view,
 327                                                               gint               count);
 328 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView       *tree_view,
 329                                                               gint               count);
 330 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView       *tree_view,
 331                                                               gint               count);
 332 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView       *tree_view,
 333                                                               GtkTreePath       *path,
 334                                                               GtkRBTree         *tree,
 335                                                               GtkRBNode         *node,
 336                                                               gboolean           animate);
 337 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView       *tree_view,
 338                                                               GtkTreePath       *path,
 339                                                               GtkRBTree         *tree,
 340                                                               GtkRBNode         *node,
 341                                                               gboolean           open_all,
 342                                                               gboolean           animate);
 343 static void     gtk_tree_view_real_set_cursor                (GtkTreeView       *tree_view,
 344                                                               GtkTreePath       *path,
 345                                                               gboolean           clear_and_select);
 346 static void     gtk_tree_view_column_autosize                (GtkTreeView       *tree_view,
 347                                                               GtkTreeViewColumn *tree_column);
 348
 349 /* interactive search */
 350 static void     gtk_tree_view_search_dialog_destroy     (GtkWidget        *search_dialog,
 351                                                          GtkTreeView      *tree_view);
 352 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 353                                                          GtkWidget        *search_dialog);
 354 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 355                                                          GtkMenu          *menu,
 356                                                          gpointer          data);
 357 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 358 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 359                                                          gpointer          data);
 360 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 361                                                          GdkEventAny      *event,
 362                                                          GtkTreeView      *tree_view);
 363 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 364                                                          GdkEventButton   *event,
 365                                                          GtkTreeView      *tree_view);
 366 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 367                                                          GdkEventKey      *event,
 368                                                          GtkTreeView      *tree_view);
 369 static void     gtk_tree_view_search_move               (GtkWidget        *window,
 370                                                          GtkTreeView      *tree_view,
 371                                                          gboolean          up);
 372 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 373                                                          gint              column,
 374                                                          const gchar      *key,
 375                                                          GtkTreeIter      *iter,
 376                                                          gpointer          search_data);
 377 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 378                                                          GtkTreeSelection *selection,
 379                                                          GtkTreeIter      *iter,
 380                                                          const gchar      *text,
 381                                                          gint             *count,
 382                                                          gint              n);
 383 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 384                                                          GtkTreeView      *tree_view);
 385 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 386                                                          GtkWidget        *child_widget,
 387                                                          gint              x,
 388                                                          gint              y,
 389                                                          gint              width,
 390                                                          gint              height);
 391 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 392                                                          GtkTreePath      *cursor_path);
 393 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 394                                               GtkTreeViewColumn *column,
 395                                               GtkTreePath       *path,
 396                                               GtkCellEditable   *cell_editable,
 397                                               GdkRectangle      *cell_area,
 398                                               GdkEvent          *event,
 399                                               guint              flags);
 400 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 401                                                          gboolean     cancel_editing);
 402 static void gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view);
 403 static void gtk_tree_view_real_focus_column_header      (GtkTreeView *tree_view);
 404 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 405                                                          GtkTreeViewColumn *column,
 406                                                          gint               drop_position);
 407
 408
 409 static GtkContainerClass *parent_class = NULL;
 410 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 411
 412 \f
 413
 414 /* GType Methods
 415  */
 416
 417 GtkType
 418 gtk_tree_view_get_type (void)
 419 {
 420   static GtkType tree_view_type = 0;
 421
 422   if (!tree_view_type)
 423     {
 424       static const GTypeInfo tree_view_info =
 425       {
 426         sizeof (GtkTreeViewClass),
 427         NULL,           /* base_init */
 428         NULL,           /* base_finalize */
 429         (GClassInitFunc) gtk_tree_view_class_init,
 430         NULL,           /* class_finalize */
 431         NULL,           /* class_data */
 432         sizeof (GtkTreeView),
 433         0,              /* n_preallocs */
 434         (GInstanceInitFunc) gtk_tree_view_init
 435       };
 436
 437       tree_view_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView", &tree_view_info, 0);
 438     }
 439
 440   return tree_view_type;
 441 }
 442
 443 static void
 444 gtk_tree_view_class_init (GtkTreeViewClass *class)
 445 {
 446   GObjectClass *o_class;
 447   GtkObjectClass *object_class;
 448   GtkWidgetClass *widget_class;
 449   GtkContainerClass *container_class;
 450   GtkBindingSet *binding_set;
 451
 452   parent_class = g_type_class_peek_parent (class);
 453   binding_set = gtk_binding_set_by_class (class);
 454
 455   o_class = (GObjectClass *) class;
 456   object_class = (GtkObjectClass *) class;
 457   widget_class = (GtkWidgetClass *) class;
 458   container_class = (GtkContainerClass *) class;
 459
 460   /* GObject signals */
 461   o_class->set_property = gtk_tree_view_set_property;
 462   o_class->get_property = gtk_tree_view_get_property;
 463   o_class->finalize = gtk_tree_view_finalize;
 464
 465   /* GtkObject signals */
 466   object_class->destroy = gtk_tree_view_destroy;
 467
 468   /* GtkWidget signals */
 469   widget_class->map = gtk_tree_view_map;
 470   widget_class->realize = gtk_tree_view_realize;
 471   widget_class->unrealize = gtk_tree_view_unrealize;
 472   widget_class->size_request = gtk_tree_view_size_request;
 473   widget_class->size_allocate = gtk_tree_view_size_allocate;
 474   widget_class->button_press_event = gtk_tree_view_button_press;
 475   widget_class->button_release_event = gtk_tree_view_button_release;
 476   widget_class->motion_notify_event = gtk_tree_view_motion;
 477   widget_class->expose_event = gtk_tree_view_expose;
 478   widget_class->key_press_event = gtk_tree_view_key_press;
 479   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 480   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 481   widget_class->focus_out_event = gtk_tree_view_focus_out;
 482   widget_class->drag_begin = gtk_tree_view_drag_begin;
 483   widget_class->drag_end = gtk_tree_view_drag_end;
 484   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 485   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 486   widget_class->drag_leave = gtk_tree_view_drag_leave;
 487   widget_class->drag_motion = gtk_tree_view_drag_motion;
 488   widget_class->drag_drop = gtk_tree_view_drag_drop;
 489   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 490   widget_class->focus = gtk_tree_view_focus;
 491   widget_class->style_set = gtk_tree_view_style_set;
 492
 493   /* GtkContainer signals */
 494   container_class->remove = gtk_tree_view_remove;
 495   container_class->forall = gtk_tree_view_forall;
 496   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 497
 498   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 499   class->move_cursor = gtk_tree_view_real_move_cursor;
 500   class->select_all = gtk_tree_view_real_select_all;
 501   class->unselect_all = gtk_tree_view_real_unselect_all;
 502   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 503   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 504   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 505   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 506   class->start_interactive_search = gtk_tree_view_real_start_interactive_search;
 507   class->focus_column_header = gtk_tree_view_real_focus_column_header;
 508
 509   /* Properties */
 510
 511   g_object_class_install_property (o_class,
 512                                    PROP_MODEL,
 513                                    g_param_spec_object ("model",
 514                                                         _("TreeView Model"),
 515                                                         _("The model for the tree view"),
 516                                                         GTK_TYPE_TREE_MODEL,
 517                                                         G_PARAM_READWRITE));
 518
 519   g_object_class_install_property (o_class,
 520                                    PROP_HADJUSTMENT,
 521                                    g_param_spec_object ("hadjustment",
 522                                                         _("Horizontal Adjustment"),
 523                                                         _("Horizontal Adjustment for the widget"),
 524                                                         GTK_TYPE_ADJUSTMENT,
 525                                                         G_PARAM_READWRITE));
 526
 527   g_object_class_install_property (o_class,
 528                                    PROP_VADJUSTMENT,
 529                                    g_param_spec_object ("vadjustment",
 530                                                         _("Vertical Adjustment"),
 531                                                         _("Vertical Adjustment for the widget"),
 532                                                         GTK_TYPE_ADJUSTMENT,
 533                                                         G_PARAM_READWRITE));
 534
 535   g_object_class_install_property (o_class,
 536                                    PROP_HEADERS_VISIBLE,
 537                                    g_param_spec_boolean ("headers_visible",
 538                                                          _("Visible"),
 539                                                          _("Show the column header buttons"),
 540                                                          TRUE,
 541                                                          G_PARAM_READWRITE));
 542
 543   g_object_class_install_property (o_class,
 544                                    PROP_HEADERS_CLICKABLE,
 545                                    g_param_spec_boolean ("headers_clickable",
 546                                                          _("Headers Clickable"),
 547                                                          _("Column headers respond to click events"),
 548                                                          FALSE,
 549                                                          G_PARAM_WRITABLE));
 550
 551   g_object_class_install_property (o_class,
 552                                    PROP_EXPANDER_COLUMN,
 553                                    g_param_spec_object ("expander_column",
 554                                                         _("Expander Column"),
 555                                                         _("Set the column for the expander column"),
 556                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 557                                                         G_PARAM_READWRITE));
 558
 559   g_object_class_install_property (o_class,
 560                                    PROP_REORDERABLE,
 561                                    g_param_spec_boolean ("reorderable",
 562                                                          _("Reorderable"),
 563                                                          _("View is reorderable"),
 564                                                          FALSE,
 565                                                          G_PARAM_READWRITE));
 566
 567   g_object_class_install_property (o_class,
 568                                    PROP_RULES_HINT,
 569                                    g_param_spec_boolean ("rules_hint",
 570                                                          _("Rules Hint"),
 571                                                          _("Set a hint to the theme engine to draw rows in alternating colors"),
 572                                                          FALSE,
 573                                                          G_PARAM_READWRITE));
 574
 575     g_object_class_install_property (o_class,
 576                                      PROP_ENABLE_SEARCH,
 577                                      g_param_spec_boolean ("enable_search",
 578                                                            _("Enable Search"),
 579                                                            _("View allows user to search through columns interactively"),
 580                                                            TRUE,
 581                                                            G_PARAM_READWRITE));
 582
 583     g_object_class_install_property (o_class,
 584                                      PROP_SEARCH_COLUMN,
 585                                      g_param_spec_int ("search_column",
 586                                                        _("Search Column"),
 587                                                        _("Model column to search through when searching through code"),
 588                                                        -1,
 589                                                        G_MAXINT,
 590                                                        0,
 591                                                        G_PARAM_READWRITE));
 592
 593   /* Style properties */
 594 #define _TREE_VIEW_EXPANDER_SIZE 10
 595 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 596 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 597
 598   gtk_widget_class_install_style_property (widget_class,
 599                                            g_param_spec_int ("expander_size",
 600                                                              _("Expander Size"),
 601                                                              _("Size of the expander arrow."),
 602                                                              0,
 603                                                              G_MAXINT,
 604                                                              _TREE_VIEW_EXPANDER_SIZE,
 605                                                              G_PARAM_READABLE));
 606
 607   gtk_widget_class_install_style_property (widget_class,
 608                                            g_param_spec_int ("vertical_separator",
 609                                                              _("Vertical Separator Width"),
 610                                                              _("Vertical space between cells.  Must be an even number."),
 611                                                              0,
 612                                                              G_MAXINT,
 613                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 614                                                              G_PARAM_READABLE));
 615
 616   gtk_widget_class_install_style_property (widget_class,
 617                                            g_param_spec_int ("horizontal_separator",
 618                                                              _("Horizontal Separator Width"),
 619                                                              _("Horizontal space between cells.  Must be an even number."),
 620                                                              0,
 621                                                              G_MAXINT,
 622                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 623                                                              G_PARAM_READABLE));
 624
 625   gtk_widget_class_install_style_property (widget_class,
 626                                            g_param_spec_boolean ("allow_rules",
 627                                                                  _("Allow Rules"),
 628                                                                  _("Allow drawing of alternating color rows."),
 629                                                                  TRUE,
 630                                                                  G_PARAM_READABLE));
 631
 632   gtk_widget_class_install_style_property (widget_class,
 633                                            g_param_spec_boolean ("indent_expanders",
 634                                                                  _("Indent Expanders"),
 635                                                                  _("Make the expanders indented."),
 636                                                                  TRUE,
 637                                                                  G_PARAM_READABLE));
 638   /* Signals */
 639   widget_class->set_scroll_adjustments_signal =
 640     gtk_signal_new ("set_scroll_adjustments",
 641                     GTK_RUN_LAST,
 642                     GTK_CLASS_TYPE (object_class),
 643                     GTK_SIGNAL_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 644                     _gtk_marshal_VOID__OBJECT_OBJECT,
 645                     GTK_TYPE_NONE, 2,
 646                     GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
 647
 648   tree_view_signals[ROW_ACTIVATED] =
 649     gtk_signal_new ("row_activated",
 650                     GTK_RUN_LAST | GTK_RUN_ACTION,
 651                     GTK_CLASS_TYPE (object_class),
 652                     GTK_SIGNAL_OFFSET (GtkTreeViewClass, row_activated),
 653                     _gtk_marshal_VOID__BOXED_OBJECT,
 654                     GTK_TYPE_NONE, 2,
 655                     GTK_TYPE_TREE_PATH,
 656                     GTK_TYPE_TREE_VIEW_COLUMN);
 657
 658   tree_view_signals[TEST_EXPAND_ROW] =
 659     g_signal_new ("test_expand_row",
 660                   G_TYPE_FROM_CLASS (object_class),
 661                   G_SIGNAL_RUN_LAST,
 662                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 663                   _gtk_boolean_handled_accumulator, NULL,
 664                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 665                   G_TYPE_BOOLEAN, 2,
 666                   GTK_TYPE_TREE_ITER,
 667                   GTK_TYPE_TREE_PATH);
 668
 669   tree_view_signals[TEST_COLLAPSE_ROW] =
 670     g_signal_new ("test_collapse_row",
 671                   G_TYPE_FROM_CLASS (object_class),
 672                   G_SIGNAL_RUN_LAST,
 673                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 674                   _gtk_boolean_handled_accumulator, NULL,
 675                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 676                   G_TYPE_BOOLEAN, 2,
 677                   GTK_TYPE_TREE_ITER,
 678                   GTK_TYPE_TREE_PATH);
 679
 680   tree_view_signals[ROW_EXPANDED] =
 681     g_signal_new ("row_expanded",
 682                   G_TYPE_FROM_CLASS (object_class),
 683                   G_SIGNAL_RUN_LAST,
 684                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 685                   NULL, NULL,
 686                   _gtk_marshal_VOID__BOXED_BOXED,
 687                   GTK_TYPE_NONE, 2,
 688                   GTK_TYPE_TREE_ITER,
 689                   GTK_TYPE_TREE_PATH);
 690
 691   tree_view_signals[ROW_COLLAPSED] =
 692     g_signal_new ("row_collapsed",
 693                   G_TYPE_FROM_CLASS (object_class),
 694                   G_SIGNAL_RUN_LAST,
 695                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 696                   NULL, NULL,
 697                   _gtk_marshal_VOID__BOXED_BOXED,
 698                   GTK_TYPE_NONE, 2,
 699                   GTK_TYPE_TREE_ITER,
 700                   GTK_TYPE_TREE_PATH);
 701
 702   tree_view_signals[COLUMNS_CHANGED] =
 703     g_signal_new ("columns_changed",
 704                   G_TYPE_FROM_CLASS (object_class),
 705                   G_SIGNAL_RUN_LAST,
 706                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 707                   NULL, NULL,
 708                   _gtk_marshal_NONE__NONE,
 709                   G_TYPE_NONE, 0);
 710
 711   tree_view_signals[CURSOR_CHANGED] =
 712     g_signal_new ("cursor_changed",
 713                   G_TYPE_FROM_CLASS (object_class),
 714                   G_SIGNAL_RUN_LAST,
 715                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 716                   NULL, NULL,
 717                   _gtk_marshal_NONE__NONE,
 718                   G_TYPE_NONE, 0);
 719
 720   tree_view_signals[MOVE_CURSOR] =
 721     g_signal_new ("move_cursor",
 722                   G_TYPE_FROM_CLASS (object_class),
 723                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 724                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 725                   NULL, NULL,
 726                   _gtk_marshal_VOID__ENUM_INT,
 727                   GTK_TYPE_NONE, 2, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT);
 728
 729   tree_view_signals[SELECT_ALL] =
 730     g_signal_new ("select_all",
 731                   G_TYPE_FROM_CLASS (object_class),
 732                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 733                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
 734                   NULL, NULL,
 735                   _gtk_marshal_NONE__NONE,
 736                   GTK_TYPE_NONE, 0);
 737
 738   tree_view_signals[UNSELECT_ALL] =
 739     g_signal_new ("unselect_all",
 740                   G_TYPE_FROM_CLASS (object_class),
 741                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 742                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
 743                   NULL, NULL,
 744                   _gtk_marshal_NONE__NONE,
 745                   GTK_TYPE_NONE, 0);
 746
 747   tree_view_signals[SELECT_CURSOR_ROW] =
 748     g_signal_new ("select_cursor_row",
 749                   G_TYPE_FROM_CLASS (object_class),
 750                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 751                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
 752                   NULL, NULL,
 753                   _gtk_marshal_VOID__BOOLEAN,
 754                   GTK_TYPE_NONE, 1,
 755                   G_TYPE_BOOLEAN);
 756
 757   tree_view_signals[TOGGLE_CURSOR_ROW] =
 758     g_signal_new ("toggle_cursor_row",
 759                   G_TYPE_FROM_CLASS (object_class),
 760                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 761                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
 762                   NULL, NULL,
 763                   _gtk_marshal_NONE__NONE,
 764                   GTK_TYPE_NONE, 0);
 765
 766   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
 767     g_signal_new ("expand_collapse_cursor_row",
 768                   G_TYPE_FROM_CLASS (object_class),
 769                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 770                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
 771                   NULL, NULL,
 772                   _gtk_marshal_VOID__BOOLEAN_BOOLEAN_BOOLEAN,
 773                   GTK_TYPE_NONE, 3, GTK_TYPE_BOOL, GTK_TYPE_BOOL, GTK_TYPE_BOOL);
 774
 775   tree_view_signals[SELECT_CURSOR_PARENT] =
 776     g_signal_new ("select_cursor_parent",
 777                   G_TYPE_FROM_CLASS (object_class),
 778                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 779                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
 780                   NULL, NULL,
 781                   _gtk_marshal_NONE__NONE,
 782                   GTK_TYPE_NONE, 0);
 783
 784   tree_view_signals[START_INTERACTIVE_SEARCH] =
 785     g_signal_new ("start_interactive_search",
 786                   G_TYPE_FROM_CLASS (object_class),
 787                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 788                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
 789                   NULL, NULL,
 790                   _gtk_marshal_NONE__NONE,
 791                   GTK_TYPE_NONE, 0);
 792
 793   tree_view_signals[FOCUS_COLUMN_HEADER] =
 794     g_signal_new ("focus_column_header",
 795                   G_TYPE_FROM_CLASS (object_class),
 796                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 797                   G_STRUCT_OFFSET (GtkTreeViewClass, focus_column_header),
 798                   NULL, NULL,
 799                   _gtk_marshal_NONE__NONE,
 800                   GTK_TYPE_NONE, 0);
 801
 802   /* Key bindings */
 803   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0,
 804                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 805
 806   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0,
 807                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 808
 809   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
 810                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 811
 812   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
 813                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 814
 815   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0,
 816                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 817
 818   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0,
 819                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 820
 821   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0,
 822                                   GTK_MOVEMENT_PAGES, -1);
 823
 824   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0,
 825                                   GTK_MOVEMENT_PAGES, 1);
 826
 827   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move_cursor", 2,
 828                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 829                                 GTK_TYPE_INT, 1);
 830
 831   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move_cursor", 2,
 832                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 833                                 GTK_TYPE_INT, -1);
 834
 835   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK, "move_cursor", 2,
 836                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 837                                 GTK_TYPE_INT, 1);
 838
 839   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK, "move_cursor", 2,
 840                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 841                                 GTK_TYPE_INT, -1);
 842
 843   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 844                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 845                                 GTK_TYPE_INT, 1);
 846
 847   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 848                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 849                                 GTK_TYPE_INT, -1);
 850
 851   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle_cursor_row", 0);
 852
 853   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select_all", 0);
 854   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select_all", 0);
 855
 856   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect_all", 0);
 857   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect_all", 0);
 858
 859   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select_cursor_row", 1,
 860                                 GTK_TYPE_BOOL, TRUE);
 861
 862   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select_cursor_row", 1,
 863                                 GTK_TYPE_BOOL, TRUE);
 864
 865   /* expand and collapse rows */
 866   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand_collapse_cursor_row", 3,
 867                                 GTK_TYPE_BOOL, FALSE,
 868                                 GTK_TYPE_BOOL, TRUE,
 869                                 GTK_TYPE_BOOL, FALSE);
 870   /* Not doable on US keyboards */
 871   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 872                                 GTK_TYPE_BOOL, FALSE,
 873                                 GTK_TYPE_BOOL, TRUE,
 874                                 GTK_TYPE_BOOL, TRUE);
 875   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand_collapse_cursor_row", 3,
 876                                 GTK_TYPE_BOOL, FALSE,
 877                                 GTK_TYPE_BOOL, TRUE,
 878                                 GTK_TYPE_BOOL, FALSE);
 879   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 880                                 GTK_TYPE_BOOL, FALSE,
 881                                 GTK_TYPE_BOOL, TRUE,
 882                                 GTK_TYPE_BOOL, TRUE);
 883   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 884                                 GTK_TYPE_BOOL, FALSE,
 885                                 GTK_TYPE_BOOL, TRUE,
 886                                 GTK_TYPE_BOOL, TRUE);
 887   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 888                                 GTK_TYPE_BOOL, TRUE,
 889                                 GTK_TYPE_BOOL, TRUE,
 890                                 GTK_TYPE_BOOL, TRUE);
 891
 892   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand_collapse_cursor_row", 3,
 893                                 GTK_TYPE_BOOL, FALSE,
 894                                 GTK_TYPE_BOOL, FALSE,
 895                                 GTK_TYPE_BOOL, FALSE);
 896   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 897                                 GTK_TYPE_BOOL, FALSE,
 898                                 GTK_TYPE_BOOL, FALSE,
 899                                 GTK_TYPE_BOOL, TRUE);
 900   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand_collapse_cursor_row", 3,
 901                                 GTK_TYPE_BOOL, FALSE,
 902                                 GTK_TYPE_BOOL, FALSE,
 903                                 GTK_TYPE_BOOL, FALSE);
 904   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 905                                 GTK_TYPE_BOOL, FALSE,
 906                                 GTK_TYPE_BOOL, FALSE,
 907                                 GTK_TYPE_BOOL, TRUE);
 908   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 909                                 GTK_TYPE_BOOL, FALSE,
 910                                 GTK_TYPE_BOOL, FALSE,
 911                                 GTK_TYPE_BOOL, TRUE);
 912
 913   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select_cursor_parent", 0);
 914
 915   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start_interactive_search", 0);
 916
 917   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start_interactive_search", 0);
 918
 919   gtk_binding_entry_add_signal (binding_set, GDK_Tab, GDK_SHIFT_MASK, "focus_column_header", 0);
 920   gtk_binding_entry_add_signal (binding_set, GDK_KP_Tab, GDK_SHIFT_MASK, "focus_column_header", 0);
 921   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Left_Tab, GDK_SHIFT_MASK, "focus_column_header", 0);
 922 }
 923
 924 static void
 925 gtk_tree_view_init (GtkTreeView *tree_view)
 926 {
 927   tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);
 928   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
 929
 930   tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
 931
 932   /* We need some padding */
 933   tree_view->priv->dy = 0;
 934   tree_view->priv->n_columns = 0;
 935   tree_view->priv->header_height = 1;
 936   tree_view->priv->x_drag = 0;
 937   tree_view->priv->drag_pos = -1;
 938   tree_view->priv->header_has_focus = FALSE;
 939   tree_view->priv->pressed_button = -1;
 940   tree_view->priv->press_start_x = -1;
 941   tree_view->priv->press_start_y = -1;
 942   tree_view->priv->reorderable = FALSE;
 943   tree_view->priv->presize_handler_timer = 0;
 944   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
 945   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
 946   tree_view->priv->enable_search = TRUE;
 947   tree_view->priv->search_column = -1;
 948   tree_view->priv->search_dialog_position_func = gtk_tree_view_search_position_func;
 949   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
 950 }
 951
 952 \f
 953
 954 /* GObject Methods
 955  */
 956
 957 static void
 958 gtk_tree_view_set_property (GObject         *object,
 959                             guint            prop_id,
 960                             const GValue    *value,
 961                             GParamSpec      *pspec)
 962 {
 963   GtkTreeView *tree_view;
 964
 965   tree_view = GTK_TREE_VIEW (object);
 966
 967   switch (prop_id)
 968     {
 969     case PROP_MODEL:
 970       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
 971       break;
 972     case PROP_HADJUSTMENT:
 973       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
 974       break;
 975     case PROP_VADJUSTMENT:
 976       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
 977       break;
 978     case PROP_HEADERS_VISIBLE:
 979       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
 980       break;
 981     case PROP_HEADERS_CLICKABLE:
 982       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
 983       break;
 984     case PROP_EXPANDER_COLUMN:
 985       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
 986       break;
 987     case PROP_REORDERABLE:
 988       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
 989       break;
 990     case PROP_RULES_HINT:
 991       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
 992       break;
 993     case PROP_ENABLE_SEARCH:
 994       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
 995       break;
 996     case PROP_SEARCH_COLUMN:
 997       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
 998       break;
 999     default:
1000       break;
1001     }
1002 }
1003
1004 static void
1005 gtk_tree_view_get_property (GObject    *object,
1006                             guint       prop_id,
1007                             GValue     *value,
1008                             GParamSpec *pspec)
1009 {
1010   GtkTreeView *tree_view;
1011
1012   tree_view = GTK_TREE_VIEW (object);
1013
1014   switch (prop_id)
1015     {
1016     case PROP_MODEL:
1017       g_value_set_object (value, tree_view->priv->model);
1018       break;
1019     case PROP_HADJUSTMENT:
1020       g_value_set_object (value, tree_view->priv->hadjustment);
1021       break;
1022     case PROP_VADJUSTMENT:
1023       g_value_set_object (value, tree_view->priv->vadjustment);
1024       break;
1025     case PROP_HEADERS_VISIBLE:
1026       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1027       break;
1028     case PROP_EXPANDER_COLUMN:
1029       g_value_set_object (value, tree_view->priv->expander_column);
1030       break;
1031     case PROP_REORDERABLE:
1032       g_value_set_boolean (value, tree_view->priv->reorderable);
1033       break;
1034     case PROP_RULES_HINT:
1035       g_value_set_boolean (value, tree_view->priv->has_rules);
1036       break;
1037     case PROP_ENABLE_SEARCH:
1038       g_value_set_boolean (value, tree_view->priv->enable_search);
1039       break;
1040     case PROP_SEARCH_COLUMN:
1041       g_value_set_int (value, tree_view->priv->search_column);
1042       break;
1043     default:
1044       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1045       break;
1046     }
1047 }
1048
1049 static void
1050 gtk_tree_view_finalize (GObject *object)
1051 {
1052   GtkTreeView *tree_view = (GtkTreeView *) object;
1053
1054   g_free (tree_view->priv);
1055
1056   if (G_OBJECT_CLASS (parent_class)->finalize)
1057     (* G_OBJECT_CLASS (parent_class)->finalize) (object);
1058 }
1059
1060 \f
1061
1062 /* GtkObject Methods
1063  */
1064
1065 static void
1066 gtk_tree_view_destroy (GtkObject *object)
1067 {
1068   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1069   GtkWidget *search_dialog;
1070   GList *list;
1071
1072   gtk_tree_view_stop_editing (tree_view, TRUE);
1073
1074   if (tree_view->priv->columns != NULL)
1075     {
1076       list = tree_view->priv->columns;
1077       while (list)
1078         {
1079           GtkTreeViewColumn *column;
1080           column = GTK_TREE_VIEW_COLUMN (list->data);
1081           list = list->next;
1082           gtk_tree_view_remove_column (tree_view, column);
1083         }
1084       tree_view->priv->columns = NULL;
1085     }
1086
1087   if (tree_view->priv->tree != NULL)
1088     {
1089       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1090       _gtk_rbtree_free (tree_view->priv->tree);
1091       tree_view->priv->tree = NULL;
1092     }
1093
1094   if (tree_view->priv->selection != NULL)
1095     {
1096       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1097       g_object_unref (tree_view->priv->selection);
1098       tree_view->priv->selection = NULL;
1099     }
1100
1101   if (tree_view->priv->scroll_to_path != NULL)
1102     {
1103       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1104       tree_view->priv->scroll_to_path = NULL;
1105     }
1106
1107   if (tree_view->priv->drag_dest_row != NULL)
1108     {
1109       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1110       tree_view->priv->drag_dest_row = NULL;
1111     }
1112
1113   if (tree_view->priv->last_single_clicked != NULL)
1114     {
1115       gtk_tree_row_reference_free (tree_view->priv->last_single_clicked);
1116       tree_view->priv->last_single_clicked = NULL;
1117     }
1118
1119   if (tree_view->priv->last_single_clicked_2 != NULL)
1120     {
1121       gtk_tree_row_reference_free (tree_view->priv->last_single_clicked_2);
1122       tree_view->priv->last_single_clicked_2 = NULL;
1123     }
1124
1125   if (tree_view->priv->top_row != NULL)
1126     {
1127       gtk_tree_row_reference_free (tree_view->priv->top_row);
1128       tree_view->priv->top_row = NULL;
1129     }
1130
1131   if (tree_view->priv->column_drop_func_data &&
1132       tree_view->priv->column_drop_func_data_destroy)
1133     {
1134       (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
1135       tree_view->priv->column_drop_func_data = NULL;
1136     }
1137
1138   if (tree_view->priv->destroy_count_destroy &&
1139       tree_view->priv->destroy_count_data)
1140     {
1141       (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
1142       tree_view->priv->destroy_count_data = NULL;
1143     }
1144
1145   gtk_tree_row_reference_free (tree_view->priv->cursor);
1146   tree_view->priv->cursor = NULL;
1147
1148   gtk_tree_row_reference_free (tree_view->priv->anchor);
1149   tree_view->priv->anchor = NULL;
1150
1151   /* destroy interactive search dialog */
1152   search_dialog = gtk_object_get_data (GTK_OBJECT (tree_view),
1153                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
1154   if (search_dialog)
1155     gtk_tree_view_search_dialog_destroy (search_dialog,
1156                                          tree_view);
1157
1158   if (tree_view->priv->search_user_data)
1159     {
1160       (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
1161       tree_view->priv->search_user_data = NULL;
1162     }
1163
1164   gtk_tree_view_set_model (tree_view, NULL);
1165
1166   if (GTK_OBJECT_CLASS (parent_class)->destroy)
1167     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
1168 }
1169
1170 \f
1171
1172 /* GtkWidget Methods
1173  */
1174
1175 /* GtkWidget::map helper */
1176 static void
1177 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1178 {
1179   GList *list;
1180
1181   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1182
1183   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1184     {
1185       GtkTreeViewColumn *column;
1186
1187       for (list = tree_view->priv->columns; list; list = list->next)
1188         {
1189           column = list->data;
1190           if (GTK_WIDGET_VISIBLE (column->button) &&
1191               !GTK_WIDGET_MAPPED (column->button))
1192             gtk_widget_map (column->button);
1193         }
1194       for (list = tree_view->priv->columns; list; list = list->next)
1195         {
1196           column = list->data;
1197           if (column->visible == FALSE)
1198             continue;
1199           if (column->resizable)
1200             {
1201               gdk_window_raise (column->window);
1202               gdk_window_show (column->window);
1203             }
1204           else
1205             gdk_window_hide (column->window);
1206         }
1207       gdk_window_show (tree_view->priv->header_window);
1208     }
1209 }
1210
1211 static void
1212 gtk_tree_view_map (GtkWidget *widget)
1213 {
1214   GList *tmp_list;
1215   GtkTreeView *tree_view;
1216
1217   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1218
1219   tree_view = GTK_TREE_VIEW (widget);
1220
1221   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1222
1223   tmp_list = tree_view->priv->children;
1224   while (tmp_list)
1225     {
1226       GtkTreeViewChild *child = tmp_list->data;
1227       tmp_list = tmp_list->next;
1228
1229       if (GTK_WIDGET_VISIBLE (child->widget))
1230         {
1231           if (!GTK_WIDGET_MAPPED (child->widget))
1232             gtk_widget_map (child->widget);
1233         }
1234     }
1235   gdk_window_show (tree_view->priv->bin_window);
1236
1237   gtk_tree_view_map_buttons (tree_view);
1238
1239   gdk_window_show (widget->window);
1240 }
1241
1242 static void
1243 gtk_tree_view_realize (GtkWidget *widget)
1244 {
1245   GList *tmp_list;
1246   GtkTreeView *tree_view;
1247   GdkGCValues values;
1248   GdkWindowAttr attributes;
1249   gint attributes_mask;
1250
1251   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1252
1253   tree_view = GTK_TREE_VIEW (widget);
1254
1255   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1256
1257   /* Make the main, clipping window */
1258   attributes.window_type = GDK_WINDOW_CHILD;
1259   attributes.x = widget->allocation.x;
1260   attributes.y = widget->allocation.y;
1261   attributes.width = widget->allocation.width;
1262   attributes.height = widget->allocation.height;
1263   attributes.wclass = GDK_INPUT_OUTPUT;
1264   attributes.visual = gtk_widget_get_visual (widget);
1265   attributes.colormap = gtk_widget_get_colormap (widget);
1266   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1267
1268   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1269
1270   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1271                                    &attributes, attributes_mask);
1272   gdk_window_set_user_data (widget->window, widget);
1273
1274   /* Make the window for the tree */
1275   attributes.x = 0;
1276   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1277   attributes.width = tree_view->priv->width;
1278   attributes.height = widget->allocation.height;
1279   attributes.event_mask = GDK_EXPOSURE_MASK |
1280     GDK_SCROLL_MASK |
1281     GDK_POINTER_MOTION_MASK |
1282     GDK_ENTER_NOTIFY_MASK |
1283     GDK_LEAVE_NOTIFY_MASK |
1284     GDK_BUTTON_PRESS_MASK |
1285     GDK_BUTTON_RELEASE_MASK |
1286     gtk_widget_get_events (widget);
1287
1288   tree_view->priv->bin_window = gdk_window_new (widget->window,
1289                                                 &attributes, attributes_mask);
1290   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1291
1292   /* Make the column header window */
1293   attributes.x = 0;
1294   attributes.y = 0;
1295   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1296   attributes.height = tree_view->priv->header_height;
1297   attributes.event_mask = (GDK_EXPOSURE_MASK |
1298                            GDK_SCROLL_MASK |
1299                            GDK_BUTTON_PRESS_MASK |
1300                            GDK_BUTTON_RELEASE_MASK |
1301                            GDK_KEY_PRESS_MASK |
1302                            GDK_KEY_RELEASE_MASK) |
1303     gtk_widget_get_events (widget);
1304
1305   tree_view->priv->header_window = gdk_window_new (widget->window,
1306                                                    &attributes, attributes_mask);
1307   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1308
1309
1310   values.foreground = (widget->style->white.pixel==0 ?
1311                        widget->style->black:widget->style->white);
1312   values.function = GDK_XOR;
1313   values.subwindow_mode = GDK_INCLUDE_INFERIORS;
1314
1315   /* Add them all up. */
1316   widget->style = gtk_style_attach (widget->style, widget->window);
1317   gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1318   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1319   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1320
1321   tmp_list = tree_view->priv->children;
1322   while (tmp_list)
1323     {
1324       GtkTreeViewChild *child = tmp_list->data;
1325       tmp_list = tmp_list->next;
1326
1327       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1328     }
1329
1330   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1331     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1332
1333   install_presize_handler (tree_view);
1334 }
1335
1336 static void
1337 gtk_tree_view_unrealize (GtkWidget *widget)
1338 {
1339   GtkTreeView *tree_view;
1340   GList *list;
1341
1342   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1343
1344   tree_view = GTK_TREE_VIEW (widget);
1345
1346   if (tree_view->priv->scroll_timeout != 0)
1347     {
1348       gtk_timeout_remove (tree_view->priv->scroll_timeout);
1349       tree_view->priv->scroll_timeout = 0;
1350     }
1351
1352   if (tree_view->priv->open_dest_timeout != 0)
1353     {
1354       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
1355       tree_view->priv->open_dest_timeout = 0;
1356     }
1357
1358   if (tree_view->priv->expand_collapse_timeout != 0)
1359     {
1360       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
1361       tree_view->priv->expand_collapse_timeout = 0;
1362     }
1363
1364   if (tree_view->priv->presize_handler_timer != 0)
1365     {
1366       gtk_timeout_remove (tree_view->priv->presize_handler_timer);
1367       tree_view->priv->presize_handler_timer = 0;
1368     }
1369
1370   if (tree_view->priv->validate_rows_timer != 0)
1371     {
1372       gtk_timeout_remove (tree_view->priv->validate_rows_timer);
1373       tree_view->priv->validate_rows_timer = 0;
1374     }
1375
1376   for (list = tree_view->priv->columns; list; list = list->next)
1377     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1378
1379   gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
1380   gdk_window_destroy (tree_view->priv->bin_window);
1381   tree_view->priv->bin_window = NULL;
1382
1383   gdk_window_set_user_data (tree_view->priv->header_window, NULL);
1384   gdk_window_destroy (tree_view->priv->header_window);
1385   tree_view->priv->header_window = NULL;
1386
1387   if (tree_view->priv->drag_window)
1388     {
1389       gdk_window_set_user_data (tree_view->priv->drag_window, NULL);
1390       gdk_window_destroy (tree_view->priv->drag_window);
1391       tree_view->priv->drag_window = NULL;
1392     }
1393
1394   if (tree_view->priv->drag_highlight_window)
1395     {
1396       gdk_window_set_user_data (tree_view->priv->drag_highlight_window, NULL);
1397       gdk_window_destroy (tree_view->priv->drag_highlight_window);
1398       tree_view->priv->drag_highlight_window = NULL;
1399     }
1400
1401   /* GtkWidget::unrealize destroys children and widget->window */
1402   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1403     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1404 }
1405
1406 /* GtkWidget::size_request helper */
1407 static void
1408 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1409 {
1410   GList *list;
1411
1412   tree_view->priv->header_height = 0;
1413
1414   if (tree_view->priv->model)
1415     {
1416       for (list = tree_view->priv->columns; list; list = list->next)
1417         {
1418           GtkRequisition requisition;
1419           GtkTreeViewColumn *column = list->data;
1420
1421           if (column->button == NULL)
1422             continue;
1423
1424           column = list->data;
1425
1426           gtk_widget_size_request (column->button, &requisition);
1427           column->button_request = requisition.width;
1428           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1429         }
1430     }
1431 }
1432
1433
1434 static void
1435 gtk_tree_view_update_size (GtkTreeView *tree_view)
1436 {
1437   GList *list;
1438   GtkTreeViewColumn *column;
1439   gint i;
1440
1441   if (tree_view->priv->model == NULL)
1442     {
1443       tree_view->priv->width = 0;
1444       tree_view->priv->height = 0;
1445       return;
1446     }
1447
1448   tree_view->priv->width = 0;
1449   /* keep this in sync with size_allocate below */
1450   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1451     {
1452       gint real_requested_width = 0;
1453       column = list->data;
1454       if (!column->visible)
1455         continue;
1456
1457       if (column->use_resized_width)
1458         {
1459           real_requested_width = column->resized_width;
1460         }
1461       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1462         {
1463           real_requested_width = column->fixed_width;
1464         }
1465       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1466         {
1467           real_requested_width = MAX (column->requested_width, column->button_request);
1468         }
1469       else
1470         {
1471           real_requested_width = column->requested_width;
1472         }
1473
1474       if (column->min_width != -1)
1475         real_requested_width = MAX (real_requested_width, column->min_width);
1476       if (column->max_width != -1)
1477         real_requested_width = MIN (real_requested_width, column->max_width);
1478
1479       tree_view->priv->width += real_requested_width;
1480     }
1481
1482   if (tree_view->priv->tree == NULL)
1483     tree_view->priv->height = 0;
1484   else
1485     tree_view->priv->height = tree_view->priv->tree->root->offset;
1486 }
1487
1488 static void
1489 gtk_tree_view_size_request (GtkWidget      *widget,
1490                             GtkRequisition *requisition)
1491 {
1492   GtkTreeView *tree_view;
1493   GList *tmp_list;
1494
1495   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1496
1497   tree_view = GTK_TREE_VIEW (widget);
1498
1499   /* we validate 50 rows initially just to make sure we have some size */
1500   /* in practice, with a lot of static lists, this should get a good width */
1501   validate_rows_handler (tree_view);
1502   gtk_tree_view_size_request_columns (tree_view);
1503   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
1504
1505   requisition->width = tree_view->priv->width;
1506   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
1507
1508   tmp_list = tree_view->priv->children;
1509
1510   while (tmp_list)
1511     {
1512       GtkTreeViewChild *child = tmp_list->data;
1513       GtkRequisition child_requisition;
1514
1515       tmp_list = tmp_list->next;
1516
1517       if (GTK_WIDGET_VISIBLE (child->widget))
1518         gtk_widget_size_request (child->widget, &child_requisition);
1519     }
1520 }
1521
1522 /* GtkWidget::size_allocate helper */
1523 static void
1524 gtk_tree_view_size_allocate_columns (GtkWidget *widget)
1525 {
1526   GtkTreeView *tree_view;
1527   GList *list, *last_column;
1528   GtkTreeViewColumn *column;
1529   GtkAllocation allocation;
1530   gint width = 0;
1531
1532   tree_view = GTK_TREE_VIEW (widget);
1533
1534   for (last_column = g_list_last (tree_view->priv->columns);
1535        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
1536        last_column = last_column->prev)
1537     ;
1538   if (last_column == NULL)
1539     return;
1540
1541   allocation.y = 0;
1542   allocation.height = tree_view->priv->header_height;
1543
1544   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
1545     {
1546       gint real_requested_width = 0;
1547       column = list->data;
1548       if (!column->visible)
1549         continue;
1550
1551       /* We need to handle the dragged button specially.
1552        */
1553       if (column == tree_view->priv->drag_column)
1554         {
1555           GtkAllocation drag_allocation;
1556           gdk_window_get_size (tree_view->priv->drag_window,
1557                                &(drag_allocation.width), &(drag_allocation.height));
1558           drag_allocation.x = 0;
1559           drag_allocation.y = 0;
1560           gtk_widget_size_allocate (tree_view->priv->drag_column->button, &drag_allocation);
1561           width += drag_allocation.width;
1562           continue;
1563         }
1564
1565       if (column->use_resized_width)
1566         {
1567           real_requested_width = column->resized_width;
1568         }
1569       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1570         {
1571           real_requested_width = column->fixed_width;
1572         }
1573       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1574         {
1575           real_requested_width = MAX (column->requested_width, column->button_request);
1576         }
1577       else
1578         {
1579           real_requested_width = column->requested_width;
1580           if (real_requested_width < 0)
1581             real_requested_width = 0;
1582         }
1583
1584       if (column->min_width != -1)
1585         real_requested_width = MAX (real_requested_width, column->min_width);
1586       if (column->max_width != -1)
1587         real_requested_width = MIN (real_requested_width, column->max_width);
1588
1589       allocation.x = width;
1590       column->width = real_requested_width;
1591       if (list == last_column &&
1592           width + real_requested_width < widget->allocation.width)
1593         {
1594           column->width += (widget->allocation.width - column->width - width);
1595         }
1596       g_object_notify (G_OBJECT (column), "width");
1597       allocation.width = column->width;
1598       width += column->width;
1599       gtk_widget_size_allocate (column->button, &allocation);
1600       if (column->window)
1601         gdk_window_move_resize (column->window,
1602                                 allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
1603                                 allocation.y,
1604                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
1605     }
1606 }
1607
1608 static void
1609 gtk_tree_view_size_allocate (GtkWidget     *widget,
1610                              GtkAllocation *allocation)
1611 {
1612   GList *tmp_list;
1613   GtkTreeView *tree_view;
1614
1615   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1616
1617   widget->allocation = *allocation;
1618
1619   tree_view = GTK_TREE_VIEW (widget);
1620
1621   tmp_list = tree_view->priv->children;
1622
1623   while (tmp_list)
1624     {
1625       GtkAllocation allocation;
1626
1627       GtkTreeViewChild *child = tmp_list->data;
1628       tmp_list = tmp_list->next;
1629
1630       /* totally ignore our childs requisition */
1631       allocation.x = child->x;
1632       allocation.y = child->y;
1633       allocation.width = child->width;
1634       allocation.height = child->height;
1635       gtk_widget_size_allocate (child->widget, &allocation);
1636     }
1637
1638
1639   tree_view->priv->hadjustment->page_size = allocation->width;
1640   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
1641   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
1642   tree_view->priv->hadjustment->lower = 0;
1643   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
1644
1645   if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
1646     tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1647   gtk_adjustment_changed (tree_view->priv->hadjustment);
1648
1649   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
1650   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
1651   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
1652   tree_view->priv->vadjustment->lower = 0;
1653   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
1654
1655   if (tree_view->priv->vadjustment->value + allocation->height > tree_view->priv->height)
1656     gtk_adjustment_set_value (tree_view->priv->vadjustment,
1657                               MAX (tree_view->priv->height - tree_view->priv->vadjustment->page_size, 0));
1658   gtk_adjustment_changed (tree_view->priv->vadjustment);
1659
1660   if (GTK_WIDGET_REALIZED (widget))
1661     {
1662       gdk_window_move_resize (widget->window,
1663                               allocation->x, allocation->y,
1664                               allocation->width, allocation->height);
1665       gdk_window_move_resize (tree_view->priv->header_window,
1666                               - (gint) tree_view->priv->hadjustment->value,
1667                               0,
1668                               MAX (tree_view->priv->width, allocation->width),
1669                               tree_view->priv->header_height);
1670       gdk_window_move_resize (tree_view->priv->bin_window,
1671                               - (gint) tree_view->priv->hadjustment->value,
1672                               TREE_VIEW_HEADER_HEIGHT (tree_view),
1673                               MAX (tree_view->priv->width, allocation->width),
1674                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
1675     }
1676
1677   gtk_tree_view_size_allocate_columns (widget);
1678 }
1679
1680 static gboolean
1681 gtk_tree_view_button_press (GtkWidget      *widget,
1682                             GdkEventButton *event)
1683 {
1684   GtkTreeView *tree_view;
1685   GList *list;
1686   GtkTreeViewColumn *column = NULL;
1687   gint i;
1688   GdkRectangle background_area;
1689   GdkRectangle cell_area;
1690   gint vertical_separator;
1691   gint horizontal_separator;
1692
1693   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
1694   g_return_val_if_fail (event != NULL, FALSE);
1695
1696   tree_view = GTK_TREE_VIEW (widget);
1697   gtk_tree_view_stop_editing (tree_view, FALSE);
1698   gtk_widget_style_get (widget,
1699                         "vertical_separator", &vertical_separator,
1700                         "horizontal_separator", &horizontal_separator,
1701                         NULL);
1702
1703   if (event->window == tree_view->priv->bin_window &&
1704       tree_view->priv->tree != NULL)
1705     {
1706       GtkRBNode *node;
1707       GtkRBTree *tree;
1708       GtkTreePath *path;
1709       gchar *path_string;
1710       gint depth;
1711       gint new_y;
1712       gint y_offset;
1713       gint dval;
1714       gint pre_val, aft_val;
1715       GtkTreeViewColumn *column = NULL;
1716       gint column_handled_click = FALSE;
1717
1718       if (!GTK_WIDGET_HAS_FOCUS (widget))
1719         gtk_widget_grab_focus (widget);
1720       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1721
1722       /* are we in an arrow? */
1723       if (tree_view->priv->prelight_node &&
1724           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
1725         {
1726           if (event->button == 1)
1727             {
1728               gtk_grab_add (widget);
1729               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
1730               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
1731               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
1732                                         tree_view->priv->prelight_tree,
1733                                         tree_view->priv->prelight_node,
1734                                         event->x,
1735                                         event->y);
1736             }
1737           return TRUE;
1738         }
1739
1740       /* find the node that was clicked */
1741       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
1742       if (new_y < 0)
1743         new_y = 0;
1744       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
1745
1746       if (node == NULL)
1747         /* We clicked in dead space */
1748         return TRUE;
1749
1750       /* Get the path and the node */
1751       path = _gtk_tree_view_find_path (tree_view, tree, node);
1752       depth = gtk_tree_path_get_depth (path);
1753       background_area.y = y_offset + event->y;
1754       background_area.height = MAX (GTK_RBNODE_GET_HEIGHT (node),
1755                                     tree_view->priv->expander_size);
1756       background_area.x = 0;
1757
1758       /* Let the column have a chance at selecting it. */
1759       for (list = tree_view->priv->columns; list; list = list->next)
1760         {
1761           column = list->data;
1762
1763           if (!column->visible)
1764             continue;
1765
1766           background_area.width = column->width;
1767           if ((background_area.x > (gint) event->x) ||
1768               (background_area.x + background_area.width <= (gint) event->x))
1769             {
1770               background_area.x += background_area.width;
1771               continue;
1772             }
1773
1774           /* we found the focus column */
1775           cell_area = background_area;
1776           cell_area.width -= horizontal_separator;
1777           cell_area.height -= vertical_separator;
1778           cell_area.x += horizontal_separator/2;
1779           cell_area.y += vertical_separator/2;
1780           if (gtk_tree_view_is_expander_column (tree_view, column) &&
1781               TREE_VIEW_DRAW_EXPANDERS(tree_view))
1782             {
1783               cell_area.x += depth * tree_view->priv->expander_size;
1784               cell_area.width -= depth * tree_view->priv->expander_size;
1785             }
1786           break;
1787         }
1788
1789       if (column == NULL)
1790         return FALSE;
1791
1792       pre_val = tree_view->priv->vadjustment->value;
1793
1794       tree_view->priv->focus_column = column;
1795       if (event->state & GDK_CONTROL_MASK)
1796         {
1797           gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
1798           gtk_tree_view_real_toggle_cursor_row (tree_view);
1799         }
1800       else if (event->state & GDK_SHIFT_MASK)
1801         {
1802           gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
1803           gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
1804         }
1805       else
1806         {
1807           gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
1808         }
1809
1810       /* the treeview may have been scrolled because of _set_cursor,
1811        * correct here
1812        */
1813
1814       aft_val = tree_view->priv->vadjustment->value;
1815       dval = pre_val - aft_val;
1816
1817       cell_area.y += dval;
1818       background_area.y += dval;
1819
1820       if (event->type == GDK_BUTTON_PRESS &&
1821           !(event->state & gtk_accelerator_get_default_mod_mask ()))
1822         {
1823           GtkCellEditable *cell_editable = NULL;
1824           /* FIXME: get the right flags */
1825           guint flags = 0;
1826           GtkTreeIter iter;
1827
1828           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
1829           gtk_tree_view_column_cell_set_cell_data (column,
1830                                                    tree_view->priv->model,
1831                                                    &iter,
1832                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
1833                                                    node->children?TRUE:FALSE);
1834
1835           path_string = gtk_tree_path_to_string (path);
1836
1837           if (_gtk_tree_view_column_cell_event (column,
1838                                                 &cell_editable,
1839                                                 (GdkEvent *)event,
1840                                                 path_string,
1841                                                 &background_area,
1842                                                 &cell_area, flags))
1843             {
1844               if (cell_editable != NULL)
1845                 {
1846                   gtk_tree_view_real_start_editing (tree_view,
1847                                                     column,
1848                                                     path,
1849                                                     cell_editable,
1850                                                     &cell_area,
1851                                                     (GdkEvent *)event,
1852                                                     flags);
1853
1854                 }
1855               column_handled_click = TRUE;
1856             }
1857           g_free (path_string);
1858         }
1859
1860       /* Save press to possibly begin a drag
1861        */
1862       if (!column_handled_click &&
1863           tree_view->priv->pressed_button < 0)
1864         {
1865           tree_view->priv->pressed_button = event->button;
1866           tree_view->priv->press_start_x = event->x;
1867           tree_view->priv->press_start_y = event->y;
1868         }
1869
1870       if (event->button == 1 && event->type == GDK_2BUTTON_PRESS &&
1871           tree_view->priv->last_single_clicked)
1872         {
1873           GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_single_clicked);
1874
1875           if (lsc)
1876             {
1877               if (!gtk_tree_path_compare (lsc, path))
1878                 {
1879                   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
1880                     {
1881                       if (node->children == NULL)
1882                         gtk_tree_view_real_expand_row (tree_view, path,
1883                                                        tree, node, FALSE,
1884                                                        TRUE);
1885                       else
1886                         gtk_tree_view_real_collapse_row (tree_view, path,
1887                                                          tree, node, TRUE);
1888                     }
1889
1890                   gtk_tree_view_row_activated (tree_view, path, column);
1891                 }
1892               gtk_tree_path_free (lsc);
1893             }
1894
1895           if (tree_view->priv->last_single_clicked)
1896             gtk_tree_row_reference_free (tree_view->priv->last_single_clicked);
1897           if (tree_view->priv->last_single_clicked_2)
1898             gtk_tree_row_reference_free (tree_view->priv->last_single_clicked_2);
1899           tree_view->priv->last_single_clicked = NULL;
1900           tree_view->priv->last_single_clicked_2 = NULL;
1901         }
1902       else if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
1903         {
1904           if (tree_view->priv->last_single_clicked)
1905             gtk_tree_row_reference_free (tree_view->priv->last_single_clicked);
1906           tree_view->priv->last_single_clicked = tree_view->priv->last_single_clicked_2;
1907           tree_view->priv->last_single_clicked_2 = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
1908         }
1909
1910       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1911       gtk_tree_path_free (path);
1912       return TRUE;
1913     }
1914
1915   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
1916    */
1917   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
1918     {
1919       column = list->data;
1920       if (event->window == column->window &&
1921           column->resizable &&
1922           column->window)
1923         {
1924           gpointer drag_data;
1925
1926           if (event->type == GDK_2BUTTON_PRESS)
1927             {
1928               gtk_tree_view_column_autosize (tree_view, column);
1929               break;
1930             }
1931
1932           if (gdk_pointer_grab (column->window, FALSE,
1933                                 GDK_POINTER_MOTION_HINT_MASK |
1934                                 GDK_BUTTON1_MOTION_MASK |
1935                                 GDK_BUTTON_RELEASE_MASK,
1936                                 NULL, NULL, event->time))
1937             return FALSE;
1938
1939           gtk_grab_add (widget);
1940           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
1941           column->resized_width = column->width;
1942           column->use_resized_width = TRUE;
1943
1944           /* block attached dnd signal handler */
1945           drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
1946           if (drag_data)
1947             gtk_signal_handler_block_by_data (GTK_OBJECT (widget), drag_data);
1948
1949           if (!GTK_WIDGET_HAS_FOCUS (widget))
1950             gtk_widget_grab_focus (widget);
1951
1952           tree_view->priv->drag_pos = i;
1953           tree_view->priv->x_drag = (column->button->allocation.x + column->button->allocation.width);
1954           break;
1955         }
1956     }
1957   return TRUE;
1958 }
1959
1960 /* GtkWidget::button_release_event helper */
1961 static gboolean
1962 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
1963                                           GdkEventButton *event)
1964 {
1965   GtkTreeView *tree_view;
1966
1967   tree_view = GTK_TREE_VIEW (widget);
1968
1969   gdk_pointer_ungrab (GDK_CURRENT_TIME);
1970   gdk_keyboard_ungrab (GDK_CURRENT_TIME);
1971
1972   /* Move the button back */
1973   g_object_ref (tree_view->priv->drag_column->button);
1974   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
1975   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
1976   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
1977   g_object_unref (tree_view->priv->drag_column->button);
1978   gtk_widget_queue_resize (widget);
1979   if (tree_view->priv->drag_column->resizable)
1980     {
1981       gdk_window_raise (tree_view->priv->drag_column->window);
1982       gdk_window_show (tree_view->priv->drag_column->window);
1983     }
1984   else
1985     gdk_window_hide (tree_view->priv->drag_column->window);
1986
1987   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
1988
1989   if (tree_view->priv->cur_reorder &&
1990       tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
1991     gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
1992                                      tree_view->priv->cur_reorder->left_column);
1993   tree_view->priv->drag_column = NULL;
1994   gdk_window_hide (tree_view->priv->drag_window);
1995
1996   g_list_foreach (tree_view->priv->column_drag_info, (GFunc) g_free, NULL);
1997   g_list_free (tree_view->priv->column_drag_info);
1998   tree_view->priv->column_drag_info = NULL;
1999
2000   gdk_window_hide (tree_view->priv->drag_highlight_window);
2001
2002   /* Reset our flags */
2003   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2004   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2005
2006   return TRUE;
2007 }
2008
2009 /* GtkWidget::button_release_event helper */
2010 static gboolean
2011 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2012                                             GdkEventButton *event)
2013 {
2014   GtkTreeView *tree_view;
2015   gpointer drag_data;
2016   gint x;
2017   gint i;
2018
2019   tree_view = GTK_TREE_VIEW (widget);
2020
2021   i = tree_view->priv->drag_pos;
2022   tree_view->priv->drag_pos = -1;
2023
2024       /* unblock attached dnd signal handler */
2025   drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
2026   if (drag_data)
2027     gtk_signal_handler_unblock_by_data (GTK_OBJECT (widget), drag_data);
2028
2029   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2030   gtk_widget_get_pointer (widget, &x, NULL);
2031   gtk_grab_remove (widget);
2032   gdk_pointer_ungrab (event->time);
2033
2034   return TRUE;
2035 }
2036
2037 static gboolean
2038 gtk_tree_view_button_release (GtkWidget      *widget,
2039                               GdkEventButton *event)
2040 {
2041   GtkTreeView *tree_view;
2042
2043   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2044   g_return_val_if_fail (event != NULL, FALSE);
2045
2046   tree_view = GTK_TREE_VIEW (widget);
2047
2048   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2049     return gtk_tree_view_button_release_drag_column (widget, event);
2050
2051   if (tree_view->priv->pressed_button == event->button)
2052     tree_view->priv->pressed_button = -1;
2053
2054   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2055     return gtk_tree_view_button_release_column_resize (widget, event);
2056
2057   if (tree_view->priv->button_pressed_node == NULL)
2058     return FALSE;
2059
2060   if (event->button == 1)
2061     {
2062       gtk_grab_remove (widget);
2063       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
2064           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2065         {
2066           GtkTreePath *path = NULL;
2067
2068           path = _gtk_tree_view_find_path (tree_view,
2069                                            tree_view->priv->button_pressed_tree,
2070                                            tree_view->priv->button_pressed_node);
2071           /* Actually activate the node */
2072           if (tree_view->priv->button_pressed_node->children == NULL)
2073             gtk_tree_view_real_expand_row (tree_view, path,
2074                                            tree_view->priv->button_pressed_tree,
2075                                            tree_view->priv->button_pressed_node,
2076                                            FALSE, TRUE);
2077           else
2078             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
2079                                              tree_view->priv->button_pressed_tree,
2080                                              tree_view->priv->button_pressed_node, TRUE);
2081           gtk_tree_path_free (path);
2082         }
2083
2084       tree_view->priv->button_pressed_tree = NULL;
2085       tree_view->priv->button_pressed_node = NULL;
2086     }
2087
2088   return TRUE;
2089 }
2090
2091
2092 /* GtkWidget::motion_event function set.
2093  */
2094
2095 static gboolean
2096 coords_are_over_arrow (GtkTreeView *tree_view,
2097                        GtkRBTree   *tree,
2098                        GtkRBNode   *node,
2099                        /* these are in window coords */
2100                        gint         x,
2101                        gint         y)
2102 {
2103   GdkRectangle arrow;
2104   gint x2;
2105
2106   if (!GTK_WIDGET_REALIZED (tree_view))
2107     return FALSE;
2108
2109   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
2110     return FALSE;
2111
2112   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
2113
2114   arrow.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2115
2116   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
2117
2118   arrow.width = x2 - arrow.x;
2119
2120   return (x >= arrow.x &&
2121           x < (arrow.x + arrow.width) &&
2122           y >= arrow.y &&
2123           y < (arrow.y + arrow.height));
2124 }
2125
2126 static void
2127 do_unprelight (GtkTreeView *tree_view,
2128                /* these are in tree window coords */
2129                gint x,
2130                gint y)
2131 {
2132   if (tree_view->priv->prelight_node == NULL)
2133     return;
2134
2135   GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
2136
2137   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2138       !coords_are_over_arrow (tree_view,
2139                               tree_view->priv->prelight_tree,
2140                               tree_view->priv->prelight_node,
2141                               x,
2142                               y))
2143     /* We need to unprelight the old arrow. */
2144     {
2145       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2146
2147       gtk_tree_view_draw_arrow (tree_view,
2148                                 tree_view->priv->prelight_tree,
2149                                 tree_view->priv->prelight_node,
2150                                 x,
2151                                 y);
2152
2153     }
2154
2155   tree_view->priv->prelight_node = NULL;
2156   tree_view->priv->prelight_tree = NULL;
2157 }
2158
2159 static void
2160 do_prelight (GtkTreeView *tree_view,
2161              GtkRBTree   *tree,
2162              GtkRBNode   *node,
2163              /* these are in tree_window coords */
2164              gint         x,
2165              gint         y)
2166 {
2167   if (coords_are_over_arrow (tree_view, tree, node, x, y))
2168     {
2169       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2170     }
2171
2172   tree_view->priv->prelight_node = node;
2173   tree_view->priv->prelight_tree = tree;
2174
2175   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
2176 }
2177
2178 static void
2179 ensure_unprelighted (GtkTreeView *tree_view)
2180 {
2181   do_unprelight (tree_view, -1000, -1000); /* coords not possibly over an arrow */
2182   g_assert (tree_view->priv->prelight_node == NULL);
2183 }
2184
2185
2186
2187
2188 /* Our motion arrow is either a box (in the case of the original spot)
2189  * or an arrow.  It is expander_size wide.
2190  */
2191 /*
2192  * 11111111111111
2193  * 01111111111110
2194  * 00111111111100
2195  * 00011111111000
2196  * 00001111110000
2197  * 00000111100000
2198  * 00000111100000
2199  * 00000111100000
2200  * ~ ~ ~ ~ ~ ~ ~
2201  * 00000111100000
2202  * 00000111100000
2203  * 00000111100000
2204  * 00001111110000
2205  * 00011111111000
2206  * 00111111111100
2207  * 01111111111110
2208  * 11111111111111
2209  */
2210
2211 static void
2212 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
2213 {
2214   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
2215   GtkWidget *widget = GTK_WIDGET (tree_view);
2216   GdkBitmap *mask = NULL;
2217   gint x;
2218   gint y;
2219   gint width;
2220   gint height;
2221   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
2222   GdkWindowAttr attributes;
2223   guint attributes_mask;
2224
2225   if (!reorder ||
2226       reorder->left_column == tree_view->priv->drag_column ||
2227       reorder->right_column == tree_view->priv->drag_column)
2228     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2229   else if (reorder->left_column || reorder->right_column)
2230     {
2231       GdkRectangle visible_rect;
2232       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2233       if (reorder->left_column)
2234         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
2235       else
2236         x = reorder->right_column->button->allocation.x;
2237
2238       if (x < visible_rect.x)
2239         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
2240       else if (x > visible_rect.x + visible_rect.width)
2241         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
2242       else
2243         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
2244     }
2245
2246   /* We want to draw the rectangle over the initial location. */
2247   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2248     {
2249       GdkGC *gc;
2250       GdkColor col;
2251
2252       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2253         {
2254
2255           if (tree_view->priv->drag_highlight_window)
2256             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2257
2258           attributes.window_type = GDK_WINDOW_CHILD;
2259           attributes.wclass = GDK_INPUT_OUTPUT;
2260           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2261           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2262           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2263           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2264           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
2265           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2266
2267           width = tree_view->priv->drag_column->button->allocation.width;
2268           height = tree_view->priv->drag_column->button->allocation.height;
2269           gdk_window_move_resize (tree_view->priv->drag_highlight_window,
2270                                   tree_view->priv->drag_column_x, 0, width, height);
2271
2272           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2273           gc = gdk_gc_new (mask);
2274           col.pixel = 1;
2275           gdk_gc_set_foreground (gc, &col);
2276           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2277           col.pixel = 0;
2278           gdk_gc_set_foreground(gc, &col);
2279           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
2280           gdk_gc_destroy (gc);
2281
2282           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2283                                          mask, 0, 0);
2284           if (mask) gdk_pixmap_unref (mask);
2285           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2286         }
2287     }
2288   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
2289     {
2290       gint i, j = 1;
2291       GdkGC *gc;
2292       GdkColor col;
2293
2294       width = tree_view->priv->expander_size;
2295
2296       /* Get x, y, width, height of arrow */
2297       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
2298       if (reorder->left_column)
2299         {
2300           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
2301           height = reorder->left_column->button->allocation.height;
2302         }
2303       else
2304         {
2305           x += reorder->right_column->button->allocation.x - width/2;
2306           height = reorder->right_column->button->allocation.height;
2307         }
2308       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
2309       height += tree_view->priv->expander_size;
2310
2311       /* Create the new window */
2312       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
2313         {
2314           if (tree_view->priv->drag_highlight_window)
2315             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2316
2317           attributes.window_type = GDK_WINDOW_TEMP;
2318           attributes.wclass = GDK_INPUT_OUTPUT;
2319           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2320           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2321           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2322           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2323           attributes.width = width;
2324           attributes.height = height;
2325           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2326           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2327
2328           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2329           gc = gdk_gc_new (mask);
2330           col.pixel = 1;
2331           gdk_gc_set_foreground (gc, &col);
2332           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2333
2334           /* Draw the 2 arrows as per above */
2335           col.pixel = 0;
2336           gdk_gc_set_foreground (gc, &col);
2337           for (i = 0; i < width; i ++)
2338             {
2339               if (i == (width/2 - 1))
2340                 continue;
2341               gdk_draw_line (mask, gc, i, j, i, height - j);
2342               if (i < (width/2 - 1))
2343                 j++;
2344               else
2345                 j--;
2346             }
2347           gdk_gc_destroy (gc);
2348           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2349                                          mask, 0, 0);
2350           if (mask) gdk_pixmap_unref (mask);
2351         }
2352
2353       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
2354       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2355     }
2356   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
2357            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2358     {
2359       gint i, j = 1;
2360       GdkGC *gc;
2361       GdkColor col;
2362
2363       width = tree_view->priv->expander_size;
2364
2365       /* Get x, y, width, height of arrow */
2366       width = width/2; /* remember, the arrow only takes half the available width */
2367       gdk_window_get_origin (widget->window, &x, &y);
2368       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2369         x += widget->allocation.width - width;
2370
2371       if (reorder->left_column)
2372         height = reorder->left_column->button->allocation.height;
2373       else
2374         height = reorder->right_column->button->allocation.height;
2375
2376       y -= tree_view->priv->expander_size;
2377       height += 2*tree_view->priv->expander_size;
2378
2379       /* Create the new window */
2380       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
2381           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2382         {
2383           if (tree_view->priv->drag_highlight_window)
2384             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2385
2386           attributes.window_type = GDK_WINDOW_TEMP;
2387           attributes.wclass = GDK_INPUT_OUTPUT;
2388           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2389           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2390           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2391           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2392           attributes.width = width;
2393           attributes.height = height;
2394           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2395           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2396
2397           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2398           gc = gdk_gc_new (mask);
2399           col.pixel = 1;
2400           gdk_gc_set_foreground (gc, &col);
2401           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2402
2403           /* Draw the 2 arrows as per above */
2404           col.pixel = 0;
2405           gdk_gc_set_foreground (gc, &col);
2406           j = tree_view->priv->expander_size;
2407           for (i = 0; i < width; i ++)
2408             {
2409               gint k;
2410               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
2411                 k = width - i - 1;
2412               else
2413                 k = i;
2414               gdk_draw_line (mask, gc, k, j, k, height - j);
2415               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
2416               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
2417               j--;
2418             }
2419           gdk_gc_destroy (gc);
2420           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2421                                          mask, 0, 0);
2422           if (mask) gdk_pixmap_unref (mask);
2423         }
2424
2425       tree_view->priv->drag_column_window_state = arrow_type;
2426       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2427    }
2428   else
2429     {
2430       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
2431       gdk_window_hide (tree_view->priv->drag_highlight_window);
2432       return;
2433     }
2434
2435   gdk_window_show (tree_view->priv->drag_highlight_window);
2436   gdk_window_raise (tree_view->priv->drag_highlight_window);
2437 }
2438
2439 static gboolean
2440 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
2441                                     GdkEventMotion *event)
2442 {
2443   gint x;
2444   gint new_width;
2445   GtkTreeViewColumn *column;
2446   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2447
2448   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
2449
2450   if (event->is_hint || event->window != widget->window)
2451     gtk_widget_get_pointer (widget, &x, NULL);
2452   else
2453     x = event->x;
2454
2455   if (tree_view->priv->hadjustment)
2456     x += tree_view->priv->hadjustment->value;
2457
2458   new_width = gtk_tree_view_new_column_width (tree_view,
2459                                               tree_view->priv->drag_pos, &x);
2460   if (x != tree_view->priv->x_drag &&
2461       (new_width != column->fixed_width));
2462     {
2463       column->resized_width = new_width;
2464       gtk_widget_queue_resize (widget);
2465     }
2466
2467   return FALSE;
2468 }
2469
2470
2471 static void
2472 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
2473 {
2474   GtkTreeViewColumnReorder *reorder = NULL;
2475   GList *list;
2476   gint mouse_x;
2477
2478   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
2479
2480   for (list = tree_view->priv->column_drag_info; list; list = list->next)
2481     {
2482       reorder = (GtkTreeViewColumnReorder *) list->data;
2483       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
2484         break;
2485       reorder = NULL;
2486     }
2487
2488   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
2489       return;*/
2490
2491   tree_view->priv->cur_reorder = reorder;
2492   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
2493 }
2494
2495 static void
2496 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
2497 {
2498   GdkRectangle visible_rect;
2499   gint y;
2500   gint offset;
2501   gfloat value;
2502
2503   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
2504   y += tree_view->priv->dy;
2505
2506   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2507
2508   /* see if we are near the edge. */
2509   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
2510   if (offset > 0)
2511     {
2512       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
2513       if (offset < 0)
2514         return;
2515     }
2516
2517   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
2518                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
2519   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
2520 }
2521
2522 static gboolean
2523 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
2524 {
2525   GdkRectangle visible_rect;
2526   gint x;
2527   gint offset;
2528   gfloat value;
2529
2530   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
2531
2532   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2533
2534   /* See if we are near the edge. */
2535   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
2536   if (offset > 0)
2537     {
2538       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
2539       if (offset < 0)
2540         return TRUE;
2541     }
2542   offset = offset/3;
2543
2544   value = CLAMP (tree_view->priv->hadjustment->value + offset,
2545                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
2546   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
2547
2548   return TRUE;
2549
2550 }
2551
2552 static gboolean
2553 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
2554                                   GdkEventMotion *event)
2555 {
2556   GtkTreeView *tree_view = (GtkTreeView *) widget;
2557   GtkTreeViewColumn *column = tree_view->priv->drag_column;
2558   gint x, y;
2559
2560   /* Sanity Check */
2561   if ((column == NULL) ||
2562       (event->window != tree_view->priv->drag_window))
2563     return FALSE;
2564
2565   /* Handle moving the header */
2566   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
2567   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
2568              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
2569   gdk_window_move (tree_view->priv->drag_window, x, y);
2570
2571   /* autoscroll, if needed */
2572   gtk_tree_view_horizontal_autoscroll (tree_view);
2573   /* Update the current reorder position and arrow; */
2574   gtk_tree_view_update_current_reorder (tree_view);
2575
2576   return TRUE;
2577 }
2578
2579 static gboolean
2580 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
2581                                  GdkEventMotion *event)
2582 {
2583   GtkTreeView *tree_view;
2584   GtkRBTree *tree;
2585   GtkRBNode *node;
2586   gint new_y;
2587   GtkRBTree *old_prelight_tree;
2588   GtkRBNode *old_prelight_node;
2589   gboolean old_arrow_prelit;
2590
2591   tree_view = (GtkTreeView *) widget;
2592
2593   if (tree_view->priv->tree == NULL)
2594     return FALSE;
2595
2596   gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
2597
2598   old_prelight_tree = tree_view->priv->prelight_tree;
2599   old_prelight_node = tree_view->priv->prelight_node;
2600   old_arrow_prelit = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2601
2602   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2603   if (new_y < 0)
2604     new_y = 0;
2605   do_unprelight (tree_view, event->x, event->y);
2606   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2607
2608   if (tree == NULL)
2609     return TRUE;
2610
2611   /* If we are currently pressing down a button, we don't want to prelight anything else. */
2612   if ((tree_view->priv->button_pressed_node != NULL) &&
2613       (tree_view->priv->button_pressed_node != node))
2614     return TRUE;
2615
2616
2617   do_prelight (tree_view, tree, node, event->x, event->y);
2618
2619   if (old_prelight_node != tree_view->priv->prelight_node)
2620     {
2621       if (old_prelight_node)
2622         {
2623           _gtk_tree_view_queue_draw_node (tree_view,
2624                                           old_prelight_tree,
2625                                           old_prelight_node,
2626                                           NULL);
2627         }
2628       if (tree_view->priv->prelight_node)
2629         {
2630           _gtk_tree_view_queue_draw_node (tree_view,
2631                                           tree_view->priv->prelight_tree,
2632                                           tree_view->priv->prelight_node,
2633                                           NULL);
2634         }
2635     }
2636   else if (old_arrow_prelit != GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2637     {
2638       if (tree_view->priv->prelight_node)
2639         {
2640           _gtk_tree_view_queue_draw_node (tree_view,
2641                                          tree_view->priv->prelight_tree,
2642                                          tree_view->priv->prelight_node,
2643                                          NULL);
2644         }
2645     }
2646   return TRUE;
2647 }
2648
2649 static gboolean
2650 gtk_tree_view_motion (GtkWidget      *widget,
2651                       GdkEventMotion *event)
2652 {
2653   GtkTreeView *tree_view;
2654
2655   tree_view = (GtkTreeView *) widget;
2656
2657   /* Resizing a column */
2658   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2659     return gtk_tree_view_motion_resize_column (widget, event);
2660
2661   /* Drag column */
2662   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2663     return gtk_tree_view_motion_drag_column (widget, event);
2664
2665   /* Sanity check it */
2666   if (event->window == tree_view->priv->bin_window)
2667     return gtk_tree_view_motion_bin_window (widget, event);
2668
2669   return FALSE;
2670 }
2671
2672 /* Warning: Very scary function.
2673  * Modify at your own risk
2674  *
2675  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
2676  * FIXME: It's not...
2677  */
2678 static gboolean
2679 gtk_tree_view_bin_expose (GtkWidget      *widget,
2680                           GdkEventExpose *event)
2681 {
2682   GtkTreeView *tree_view;
2683   GtkTreePath *path;
2684   GtkRBTree *tree;
2685   GList *list;
2686   GtkRBNode *node;
2687   GtkRBNode *cursor = NULL;
2688   GtkRBTree *cursor_tree = NULL;
2689   GtkRBNode *drag_highlight = NULL;
2690   GtkRBTree *drag_highlight_tree = NULL;
2691   GtkTreeIter iter;
2692   gint new_y;
2693   gint y_offset, x_offset, cell_offset;
2694   gint max_height;
2695   gint depth;
2696   GdkRectangle background_area;
2697   GdkRectangle cell_area;
2698   guint flags;
2699   gint highlight_x;
2700   gint bin_window_width;
2701   GtkTreePath *cursor_path;
2702   GtkTreePath *drag_dest_path;
2703   GList *last_column;
2704   gint vertical_separator;
2705   gint horizontal_separator;
2706   gboolean allow_rules;
2707
2708   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2709
2710   tree_view = GTK_TREE_VIEW (widget);
2711
2712   gtk_widget_style_get (widget,
2713                         "horizontal_separator", &horizontal_separator,
2714                         "vertical_separator", &vertical_separator,
2715                         "allow_rules", &allow_rules,
2716                         NULL);
2717
2718   if (tree_view->priv->tree == NULL)
2719     return TRUE;
2720
2721   /* clip event->area to the visible area */
2722   if (event->area.height < 0)
2723     return TRUE;
2724
2725   validate_visible_area (tree_view);
2726
2727   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
2728
2729   if (new_y < 0)
2730     new_y = 0;
2731   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2732
2733   if (node == NULL)
2734     return TRUE;
2735
2736   /* find the path for the node */
2737   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
2738                                    tree,
2739                                    node);
2740   gtk_tree_model_get_iter (tree_view->priv->model,
2741                            &iter,
2742                            path);
2743   depth = gtk_tree_path_get_depth (path);
2744   gtk_tree_path_free (path);
2745
2746   cursor_path = NULL;
2747   drag_dest_path = NULL;
2748
2749   if (tree_view->priv->cursor)
2750     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
2751
2752   if (cursor_path)
2753     _gtk_tree_view_find_node (tree_view, cursor_path,
2754                               &cursor_tree, &cursor);
2755
2756   if (tree_view->priv->drag_dest_row)
2757     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
2758
2759   if (drag_dest_path)
2760     _gtk_tree_view_find_node (tree_view, drag_dest_path,
2761                               &drag_highlight_tree, &drag_highlight);
2762
2763   gdk_drawable_get_size (tree_view->priv->bin_window,
2764                          &bin_window_width, NULL);
2765
2766   for (last_column = g_list_last (tree_view->priv->columns);
2767        last_column &&
2768          !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
2769          GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
2770        last_column = last_column->prev)
2771     ;
2772
2773   /* Actually process the expose event.  To do this, we want to
2774    * start at the first node of the event, and walk the tree in
2775    * order, drawing each successive node.
2776    */
2777
2778   do
2779     {
2780       gboolean parity;
2781
2782       max_height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2783
2784       x_offset = -event->area.x;
2785       cell_offset = 0;
2786       highlight_x = 0; /* should match x coord of first cell */
2787
2788       background_area.y = y_offset + event->area.y;
2789       background_area.height = max_height;
2790
2791       flags = 0;
2792
2793       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
2794         flags |= GTK_CELL_RENDERER_PRELIT;
2795
2796       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
2797         flags |= GTK_CELL_RENDERER_SELECTED;
2798
2799       parity = _gtk_rbtree_node_find_parity (tree, node);
2800
2801       for (list = tree_view->priv->columns; list; list = list->next)
2802         {
2803           GtkTreeViewColumn *column = list->data;
2804           const gchar *detail = NULL;
2805           GtkStateType state;
2806
2807           if (!column->visible)
2808             continue;
2809
2810           if (cell_offset > event->area.x + event->area.width ||
2811               cell_offset + column->width < event->area.x)
2812             {
2813               cell_offset += column->width;
2814               continue;
2815             }
2816
2817           if (column->show_sort_indicator)
2818             flags |= GTK_CELL_RENDERER_SORTED;
2819           else
2820             flags &= ~GTK_CELL_RENDERER_SORTED;
2821
2822           gtk_tree_view_column_cell_set_cell_data (column,
2823                                                    tree_view->priv->model,
2824                                                    &iter,
2825                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2826                                                    node->children?TRUE:FALSE);
2827
2828
2829           background_area.x = cell_offset;
2830           background_area.width = column->width;
2831
2832           cell_area = background_area;
2833           cell_area.y += vertical_separator / 2;
2834           cell_area.x += horizontal_separator / 2;
2835           cell_area.height -= vertical_separator;
2836           cell_area.width -= horizontal_separator;
2837
2838           /* Select the detail for drawing the cell.  relevant
2839            * factors are parity, sortedness, and whether to
2840            * display rules.
2841            */
2842           if (allow_rules && tree_view->priv->has_rules)
2843             {
2844               if (flags & GTK_CELL_RENDERER_SORTED)
2845                 {
2846                   if (parity)
2847                     detail = "cell_odd_ruled_sorted";
2848                   else
2849                     detail = "cell_even_ruled_sorted";
2850                 }
2851               else
2852                 {
2853                   if (parity)
2854                     detail = "cell_odd_ruled";
2855                   else
2856                     detail = "cell_even_ruled";
2857                 }
2858             }
2859           else
2860             {
2861               if (flags & GTK_CELL_RENDERER_SORTED)
2862                 {
2863                   if (parity)
2864                     detail = "cell_odd_sorted";
2865                   else
2866                     detail = "cell_even_sorted";
2867                 }
2868               else
2869                 {
2870                   if (parity)
2871                     detail = "cell_odd";
2872                   else
2873                     detail = "cell_even";
2874                 }
2875             }
2876
2877           g_assert (detail);
2878
2879           if (flags & GTK_CELL_RENDERER_SELECTED)
2880             state = GTK_STATE_SELECTED;
2881           else
2882             state = GTK_STATE_NORMAL;
2883
2884           /* Draw background */
2885           gtk_paint_flat_box (widget->style,
2886                               event->window,
2887                               state,
2888                               GTK_SHADOW_NONE,
2889                               &event->area,
2890                               widget,
2891                               detail,
2892                               background_area.x,
2893                               background_area.y,
2894                               background_area.width,
2895                               background_area.height);
2896
2897           if (gtk_tree_view_is_expander_column (tree_view, column) &&
2898               TREE_VIEW_DRAW_EXPANDERS(tree_view))
2899             {
2900               cell_area.x += depth * tree_view->priv->expander_size;
2901               cell_area.width -= depth * tree_view->priv->expander_size;
2902
2903               /* If we have an expander column, the highlight underline
2904                * starts with that column, so that it indicates which
2905                * level of the tree we're dropping at.
2906                */
2907               highlight_x = cell_area.x;
2908               _gtk_tree_view_column_cell_render (column,
2909                                                  event->window,
2910                                                  &background_area,
2911                                                  &cell_area,
2912                                                  &event->area,
2913                                                  flags);
2914               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
2915                 {
2916                   gint x, y;
2917                   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
2918                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2919                                             tree,
2920                                             node,
2921                                             x, y);
2922                 }
2923             }
2924           else
2925             {
2926               _gtk_tree_view_column_cell_render (column,
2927                                                  event->window,
2928                                                  &background_area,
2929                                                  &cell_area,
2930                                                  &event->area,
2931                                                  flags);
2932             }
2933           if (node == cursor &&
2934               ((column == tree_view->priv->focus_column &&
2935                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
2936                 GTK_WIDGET_HAS_FOCUS (widget)) ||
2937                (column == tree_view->priv->edited_column)))
2938             {
2939               _gtk_tree_view_column_cell_draw_focus (column,
2940                                                      event->window,
2941                                                      &background_area,
2942                                                      &cell_area,
2943                                                      &event->area,
2944                                                      flags);
2945             }
2946           cell_offset += column->width;
2947         }
2948
2949
2950       if (node == drag_highlight)
2951         {
2952           /* Draw indicator for the drop
2953            */
2954           gint highlight_y = -1;
2955           GtkRBTree *tree = NULL;
2956           GtkRBNode *node = NULL;
2957           gint width;
2958           gint focus_line_width;
2959
2960           switch (tree_view->priv->drag_dest_pos)
2961             {
2962             case GTK_TREE_VIEW_DROP_BEFORE:
2963               highlight_y = background_area.y - vertical_separator/2;
2964               break;
2965
2966             case GTK_TREE_VIEW_DROP_AFTER:
2967               highlight_y = background_area.y + background_area.height + vertical_separator/2;
2968               break;
2969
2970             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
2971             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
2972               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
2973
2974               if (tree == NULL)
2975                 break;
2976               gdk_drawable_get_size (tree_view->priv->bin_window,
2977                                      &width, NULL);
2978               gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL);
2979               gtk_paint_focus (widget->style,
2980                                tree_view->priv->bin_window,
2981                                GTK_WIDGET_STATE (widget),
2982                                NULL,
2983                                widget,
2984                                "treeview-drop-indicator",
2985                                0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
2986                                - focus_line_width / 2,
2987                                width, MAX(BACKGROUND_HEIGHT (node),
2988                                           tree_view->priv->expander_size)
2989                                - focus_line_width + 1);
2990               break;
2991             }
2992
2993           if (highlight_y >= 0)
2994             {
2995               gdk_draw_line (event->window,
2996                              widget->style->black_gc,
2997                              highlight_x,
2998                              highlight_y,
2999                              bin_window_width - highlight_x,
3000                              highlight_y);
3001             }
3002         }
3003
3004       y_offset += max_height;
3005       if (node->children)
3006         {
3007           GtkTreeIter parent = iter;
3008           gboolean has_child;
3009
3010           tree = node->children;
3011           node = tree->root;
3012
3013           g_assert (node != tree->nil);
3014
3015           while (node->left != tree->nil)
3016             node = node->left;
3017           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3018                                                     &iter,
3019                                                     &parent);
3020           depth++;
3021
3022           /* Sanity Check! */
3023           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
3024         }
3025       else
3026         {
3027           gboolean done = FALSE;
3028           do
3029             {
3030               node = _gtk_rbtree_next (tree, node);
3031               if (node != NULL)
3032                 {
3033                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3034                   done = TRUE;
3035
3036                   /* Sanity Check! */
3037                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
3038                 }
3039               else
3040                 {
3041                   GtkTreeIter parent_iter = iter;
3042                   gboolean has_parent;
3043
3044                   node = tree->parent_node;
3045                   tree = tree->parent_tree;
3046                   if (tree == NULL)
3047                     /* we should go to done to free some memory */
3048                     goto done;
3049                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3050                                                            &iter,
3051                                                            &parent_iter);
3052                   depth--;
3053
3054                   /* Sanity check */
3055                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
3056                 }
3057             }
3058           while (!done);
3059         }
3060     }
3061   while (y_offset < event->area.height);
3062
3063  done:
3064   if (cursor_path)
3065     gtk_tree_path_free (cursor_path);
3066
3067   if (drag_dest_path)
3068     gtk_tree_path_free (drag_dest_path);
3069
3070   return FALSE;
3071 }
3072
3073 static gboolean
3074 gtk_tree_view_expose (GtkWidget      *widget,
3075                       GdkEventExpose *event)
3076 {
3077   GtkTreeView *tree_view;
3078
3079   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3080
3081   tree_view = GTK_TREE_VIEW (widget);
3082
3083   if (event->window == tree_view->priv->bin_window)
3084     return gtk_tree_view_bin_expose (widget, event);
3085   else if (event->window == tree_view->priv->header_window)
3086     {
3087       GList *list;
3088
3089       for (list = tree_view->priv->columns; list != NULL; list = list->next)
3090         {
3091           GtkTreeViewColumn *column = list->data;
3092
3093           if (column == tree_view->priv->drag_column)
3094             continue;
3095
3096           if (column->visible)
3097             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3098                                             column->button,
3099                                             event);
3100         }
3101     }
3102   else if (event->window == tree_view->priv->drag_window)
3103     {
3104       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3105                                       tree_view->priv->drag_column->button,
3106                                       event);
3107     }
3108   return TRUE;
3109 }
3110
3111 enum
3112 {
3113   DROP_HOME,
3114   DROP_RIGHT,
3115   DROP_LEFT,
3116   DROP_END
3117 };
3118
3119 /* returns 0x1 when no column has been found -- yes it's hackish */
3120 static GtkTreeViewColumn *
3121 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
3122                                GtkTreeViewColumn *column,
3123                                gint               drop_position)
3124 {
3125   GtkTreeViewColumn *left_column = NULL;
3126   GtkTreeViewColumn *cur_column = NULL;
3127   GList *tmp_list;
3128
3129   if (!column->reorderable)
3130     return (GtkTreeViewColumn *)0x1;
3131
3132   switch (drop_position)
3133     {
3134       case DROP_HOME:
3135         /* find first column where we can drop */
3136         tmp_list = tree_view->priv->columns;
3137         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3138           return (GtkTreeViewColumn *)0x1;
3139
3140         while (tmp_list)
3141           {
3142             g_assert (tmp_list);
3143
3144             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3145             tmp_list = tmp_list->next;
3146
3147             if (left_column && left_column->visible == FALSE)
3148               continue;
3149
3150             if (!tree_view->priv->column_drop_func)
3151               return left_column;
3152
3153             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3154               {
3155                 left_column = cur_column;
3156                 continue;
3157               }
3158
3159             return cur_column;
3160           }
3161
3162         if (!tree_view->priv->column_drop_func)
3163           return left_column;
3164
3165         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3166           return left_column;
3167         else
3168           return (GtkTreeViewColumn *)0x1;
3169         break;
3170
3171       case DROP_RIGHT:
3172         /* find first column after column where we can drop */
3173         tmp_list = tree_view->priv->columns;
3174
3175         for (; tmp_list; tmp_list = tmp_list->next)
3176           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3177             break;
3178
3179         if (!tmp_list || !tmp_list->next)
3180           return (GtkTreeViewColumn *)0x1;
3181
3182         tmp_list = tmp_list->next;
3183         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3184         tmp_list = tmp_list->next;
3185
3186         while (tmp_list)
3187           {
3188             g_assert (tmp_list);
3189
3190             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3191             tmp_list = tmp_list->next;
3192
3193             if (left_column && left_column->visible == FALSE)
3194               {
3195                 left_column = cur_column;
3196                 if (tmp_list)
3197                   tmp_list = tmp_list->next;
3198                 continue;
3199               }
3200
3201             if (!tree_view->priv->column_drop_func)
3202               return left_column;
3203
3204             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3205               {
3206                 left_column = cur_column;
3207                 continue;
3208               }
3209
3210             return cur_column;
3211           }
3212
3213         if (!tree_view->priv->column_drop_func)
3214           return left_column;
3215
3216         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3217           return left_column;
3218         else
3219           return (GtkTreeViewColumn *)0x1;
3220         break;
3221
3222       case DROP_LEFT:
3223         /* find first column before column where we can drop */
3224         tmp_list = tree_view->priv->columns;
3225
3226         for (; tmp_list; tmp_list = tmp_list->next)
3227           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3228             break;
3229
3230         if (!tmp_list || !tmp_list->prev)
3231           return (GtkTreeViewColumn *)0x1;
3232
3233         tmp_list = tmp_list->prev;
3234         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3235         tmp_list = tmp_list->prev;
3236
3237         while (tmp_list)
3238           {
3239             g_assert (tmp_list);
3240
3241             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3242
3243             if (left_column && !left_column->visible)
3244               {
3245                 /*if (!tmp_list->prev)
3246                   return (GtkTreeViewColumn *)0x1;
3247                   */
3248 /*
3249                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
3250                 tmp_list = tmp_list->prev->prev;
3251                 continue;*/
3252
3253                 cur_column = left_column;
3254                 if (tmp_list)
3255                   tmp_list = tmp_list->prev;
3256                 continue;
3257               }
3258
3259             if (!tree_view->priv->column_drop_func)
3260               return left_column;
3261
3262             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3263               return left_column;
3264
3265             cur_column = left_column;
3266             tmp_list = tmp_list->prev;
3267           }
3268
3269         if (!tree_view->priv->column_drop_func)
3270           return NULL;
3271
3272         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3273           return NULL;
3274         else
3275           return (GtkTreeViewColumn *)0x1;
3276         break;
3277
3278       case DROP_END:
3279         /* same as DROP_HOME case, but doing it backwards */
3280         tmp_list = g_list_last (tree_view->priv->columns);
3281         cur_column = NULL;
3282
3283         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3284           return (GtkTreeViewColumn *)0x1;
3285
3286         while (tmp_list)
3287           {
3288             g_assert (tmp_list);
3289
3290             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3291
3292             if (left_column && !left_column->visible)
3293               {
3294                 cur_column = left_column;
3295                 tmp_list = tmp_list->prev;
3296               }
3297
3298             if (!tree_view->priv->column_drop_func)
3299               return left_column;
3300
3301             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3302               return left_column;
3303
3304             cur_column = left_column;
3305             tmp_list = tmp_list->prev;
3306           }
3307
3308         if (!tree_view->priv->column_drop_func)
3309           return NULL;
3310
3311         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3312           return NULL;
3313         else
3314           return (GtkTreeViewColumn *)0x1;
3315         break;
3316     }
3317
3318   return (GtkTreeViewColumn *)0x1;
3319 }
3320
3321 static gboolean
3322 gtk_tree_view_key_press (GtkWidget   *widget,
3323                          GdkEventKey *event)
3324 {
3325   GtkTreeView *tree_view = (GtkTreeView *) widget;
3326   GList *list;
3327
3328   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3329     {
3330       if (event->keyval == GDK_Escape)
3331         {
3332           tree_view->priv->cur_reorder = NULL;
3333           gtk_tree_view_button_release_drag_column (widget, NULL);
3334         }
3335       return TRUE;
3336     }
3337
3338   /* FIXME: this is prolly broken when we go bidi */
3339   if (tree_view->priv->columns && (event->state & GDK_SHIFT_MASK)
3340       && (event->keyval == GDK_Left || event->keyval == GDK_Right))
3341     {
3342       list = tree_view->priv->columns;
3343       while (list)
3344         {
3345           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3346           if (GTK_WIDGET_HAS_FOCUS (column->button))
3347             {
3348               if (!column->resizable)
3349                 return TRUE;
3350
3351               if (event->keyval == GDK_Left)
3352                 {
3353                   column->resized_width = MAX (column->resized_width,
3354                                                column->width);
3355                   column->resized_width -= 2;
3356                   if (column->resized_width < 0)
3357                     column->resized_width = 0;
3358
3359                   if (column->min_width == -1)
3360                     column->resized_width = MAX (column->button->requisition.width, column->resized_width);
3361                   else
3362                     column->resized_width = MAX (column->min_width, column->resized_width);
3363
3364                   if (column->max_width != -1)
3365                     column->resized_width = MIN (column->resized_width, column->max_width);
3366
3367                   column->use_resized_width = TRUE;
3368                   gtk_widget_queue_resize (widget);
3369                   return TRUE;
3370                 }
3371               else if (event->keyval == GDK_Right)
3372                 {
3373                   column->resized_width = MAX (column->resized_width,
3374                                                column->width);
3375                   column->resized_width += 2;
3376
3377                   if (column->max_width != -1)
3378                     column->resized_width = MIN (column->resized_width, column->max_width);
3379
3380                   column->use_resized_width = TRUE;
3381                   gtk_widget_queue_resize (widget);
3382                   return TRUE;
3383                 }
3384             }
3385           list = list->next;
3386         }
3387     }
3388
3389   /* FIXME: broken when we go bidi? */
3390   if (tree_view->priv->columns && (event->state & GDK_CONTROL_MASK) &&
3391       (event->keyval == GDK_Left || event->keyval == GDK_Right
3392        || event->keyval == GDK_Home || event->keyval == GDK_End))
3393     {
3394       list = tree_view->priv->columns;
3395       while (list)
3396         {
3397           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3398           if (GTK_WIDGET_HAS_FOCUS (column->button))
3399             {
3400               if (event->keyval == GDK_Left)
3401                 {
3402                   GtkTreeViewColumn *col;
3403                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
3404                   if (col != (GtkTreeViewColumn *)0x1)
3405                     gtk_tree_view_move_column_after (tree_view, column, col);
3406                   return TRUE;
3407                 }
3408               else if (event->keyval == GDK_Right)
3409                 {
3410                   GtkTreeViewColumn *col;
3411                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
3412                   if (col != (GtkTreeViewColumn *)0x1)
3413                     gtk_tree_view_move_column_after (tree_view, column, col);
3414                   return TRUE;
3415                 }
3416               else if (event->keyval == GDK_Home)
3417                 {
3418                   GtkTreeViewColumn *col;
3419                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
3420                   if (col != (GtkTreeViewColumn *)0x1)
3421                     gtk_tree_view_move_column_after (tree_view, column, col);
3422                   return TRUE;
3423                 }
3424               else if (event->keyval == GDK_End)
3425                 {
3426                   GtkTreeViewColumn *col;
3427                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
3428                   if (col != (GtkTreeViewColumn *)0x1)
3429                     gtk_tree_view_move_column_after (tree_view, column, col);
3430                   return TRUE;
3431                 }
3432             }
3433           list = list->next;
3434         }
3435     }
3436
3437   /* FIXME: this is prolly broken when we go bidi */
3438   if (tree_view->priv->columns &&
3439       (event->keyval == GDK_Left || event->keyval == GDK_Right))
3440     {
3441       gint width = 0;
3442       list = tree_view->priv->columns;
3443       while (list)
3444         {
3445           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3446           if (GTK_WIDGET_HAS_FOCUS (column->button))
3447             {
3448               if (event->keyval == GDK_Left && list->prev)
3449                 {
3450                   GList *tmp;
3451
3452                   for (tmp = list->prev; tmp; tmp = tmp->prev)
3453                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3454                       break;
3455
3456                   if (!tmp)
3457                     return FALSE;
3458
3459                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3460                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3461                   width -= tree_view->priv->focus_column->width;
3462                   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));
3463                   return TRUE;
3464                 }
3465               else if (event->keyval == GDK_Right && list->next)
3466                 {
3467                   GList *tmp;
3468
3469                   for (tmp = list->next; tmp; tmp = tmp->next)
3470                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3471                       break;
3472
3473                   if (!tmp)
3474                     return FALSE;
3475
3476                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3477
3478                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3479                   width += tree_view->priv->focus_column->width;
3480                   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));
3481                   return TRUE;
3482                 }
3483             }
3484           width += GTK_TREE_VIEW_COLUMN (list->data)->width;
3485           list = list->next;
3486         }
3487     }
3488
3489   return (* GTK_WIDGET_CLASS (parent_class)->key_press_event) (widget, event);
3490 }
3491
3492 /* FIXME Is this function necessary? Can I get an enter_notify event
3493  * w/o either an expose event or a mouse motion event?
3494  */
3495 static gboolean
3496 gtk_tree_view_enter_notify (GtkWidget        *widget,
3497                             GdkEventCrossing *event)
3498 {
3499   GtkTreeView *tree_view;
3500   GtkRBTree *tree;
3501   GtkRBNode *node;
3502   gint new_y;
3503
3504   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3505
3506   tree_view = GTK_TREE_VIEW (widget);
3507
3508   /* Sanity check it */
3509   if (event->window != tree_view->priv->bin_window)
3510     return FALSE;
3511
3512   if (tree_view->priv->tree == NULL)
3513     return FALSE;
3514
3515   if ((tree_view->priv->button_pressed_node != NULL) &&
3516       (tree_view->priv->button_pressed_node != node))
3517     return TRUE;
3518
3519   /* find the node internally */
3520   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
3521   if (new_y < 0)
3522     new_y = 0;
3523   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
3524
3525   if (node == NULL)
3526     return FALSE;
3527
3528   do_prelight (tree_view, tree, node, event->x, event->y);
3529
3530   if (tree_view->priv->prelight_node)
3531     _gtk_tree_view_queue_draw_node (tree_view,
3532                                    tree_view->priv->prelight_tree,
3533                                    tree_view->priv->prelight_node,
3534                                    NULL);
3535
3536   return TRUE;
3537 }
3538
3539 static gboolean
3540 gtk_tree_view_leave_notify (GtkWidget        *widget,
3541                             GdkEventCrossing *event)
3542 {
3543   GtkTreeView *tree_view;
3544
3545   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3546
3547   if (event->mode == GDK_CROSSING_GRAB)
3548     return TRUE;
3549   tree_view = GTK_TREE_VIEW (widget);
3550
3551   if (tree_view->priv->prelight_node)
3552     _gtk_tree_view_queue_draw_node (tree_view,
3553                                    tree_view->priv->prelight_tree,
3554                                    tree_view->priv->prelight_node,
3555                                    NULL);
3556
3557   ensure_unprelighted (tree_view);
3558
3559 return TRUE;
3560 }
3561
3562
3563 static gint
3564 gtk_tree_view_focus_out (GtkWidget     *widget,
3565                          GdkEventFocus *event)
3566 {
3567   GtkWidget   *search_dialog;
3568
3569   gtk_widget_queue_draw (widget);
3570
3571   /* destroy interactive search dialog */
3572   search_dialog = gtk_object_get_data (GTK_OBJECT (widget),
3573                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
3574   if (search_dialog)
3575     gtk_tree_view_search_dialog_destroy (search_dialog, GTK_TREE_VIEW (widget));
3576
3577   return FALSE;
3578 }
3579
3580
3581 /* Incremental Reflow
3582  */
3583
3584 /* Returns TRUE if it updated the size
3585  */
3586 static gboolean
3587 validate_row (GtkTreeView *tree_view,
3588               GtkRBTree   *tree,
3589               GtkRBNode   *node,
3590               GtkTreeIter *iter,
3591               GtkTreePath *path)
3592 {
3593   GtkTreeViewColumn *column;
3594   GList *list;
3595   gint height = 0;
3596   gint horizontal_separator;
3597   gint depth = gtk_tree_path_get_depth (path);
3598   gboolean retval = FALSE;
3599
3600   /* double check the row needs validating */
3601   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
3602       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3603     return FALSE;
3604
3605   gtk_widget_style_get (GTK_WIDGET (tree_view),
3606                         "horizontal_separator", &horizontal_separator,
3607                         NULL);
3608
3609   for (list = tree_view->priv->columns; list; list = list->next)
3610     {
3611       gint tmp_width;
3612       gint tmp_height;
3613
3614       column = list->data;
3615
3616       if (! column->visible)
3617         continue;
3618
3619       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
3620         continue;
3621
3622       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
3623                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3624                                                node->children?TRUE:FALSE);
3625       gtk_tree_view_column_cell_get_size (column,
3626                                           NULL, NULL, NULL,
3627                                           &tmp_width, &tmp_height);
3628       height = MAX (height, tmp_height);
3629       height = MAX (height, tree_view->priv->expander_size);
3630
3631       if (gtk_tree_view_is_expander_column (tree_view, column) && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3632         {
3633           tmp_width = tmp_width + horizontal_separator + depth * (tree_view->priv->expander_size);
3634         }
3635       else
3636         tmp_width = tmp_width + horizontal_separator;
3637
3638       if (tmp_width > column->requested_width)
3639         {
3640           retval = TRUE;
3641           column->requested_width = tmp_width;
3642         }
3643     }
3644
3645   if (height != GTK_RBNODE_GET_HEIGHT (node))
3646     {
3647       retval = TRUE;
3648       _gtk_rbtree_node_set_height (tree, node, height);
3649     }
3650   _gtk_rbtree_node_mark_valid (tree, node);
3651
3652   return retval;
3653 }
3654
3655
3656 static void
3657 validate_visible_area (GtkTreeView *tree_view)
3658 {
3659   GtkTreePath *path = NULL;
3660   GtkTreePath *above_path = NULL;
3661   GtkTreeIter iter;
3662   GtkRBTree *tree = NULL;
3663   GtkRBNode *node = NULL;
3664   gboolean validated_area = FALSE;
3665   gboolean size_changed = FALSE;
3666   gboolean modify_dy = FALSE;
3667   gint total_height;
3668   gint area_above = 0;
3669   gint area_below = 0;
3670
3671   if (tree_view->priv->tree == NULL)
3672     return;
3673
3674   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
3675
3676   /* First, we check to see if we need to scroll anywhere
3677    */
3678   if (tree_view->priv->scroll_to_path)
3679     {
3680       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
3681       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
3682         {
3683           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3684           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3685               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3686             {
3687               validated_area = TRUE;
3688               if (validate_row (tree_view, tree, node, &iter, path))
3689                 size_changed = TRUE;
3690             }
3691           if (tree_view->priv->scroll_to_use_align)
3692             {
3693               gint height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3694               area_above = (total_height - height) *
3695                 tree_view->priv->scroll_to_row_align;
3696               area_below = total_height - height - area_above;
3697               area_above = MAX (area_above, 0);
3698               area_below = MAX (area_below, 0);
3699             }
3700           else
3701             {
3702               g_warning ("non use_align not implemented yet");
3703               gtk_tree_path_free (path);
3704               path = NULL;
3705             }
3706         }
3707       else
3708         /* the scroll to isn't valid; ignore it.
3709          */
3710         {
3711           if (tree_view->priv->scroll_to_path && !path)
3712             {
3713               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
3714               tree_view->priv->scroll_to_path = NULL;
3715             }
3716           if (path)
3717             gtk_tree_path_free (path);
3718           path = NULL;
3719         }
3720     }
3721
3722   /* We didn't have a scroll_to set, so we just handle things normally
3723    */
3724   if (path == NULL)
3725     {
3726       gint offset;
3727
3728       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
3729                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
3730                                         &tree, &node);
3731       if (node == NULL)
3732         {
3733           /* In this case, nothing has been validated */
3734           path = gtk_tree_path_new_first ();
3735           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
3736         }
3737       else
3738         {
3739           path = _gtk_tree_view_find_path (tree_view, tree, node);
3740           total_height += offset;
3741         }
3742
3743       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3744
3745       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3746           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3747         {
3748           validated_area = TRUE;
3749           if (validate_row (tree_view, tree, node, &iter, path))
3750             size_changed = TRUE;
3751         }
3752       area_above = 0;
3753       area_below = total_height - MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3754     }
3755
3756   above_path = gtk_tree_path_copy (path);
3757
3758   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
3759    * backwards is much slower then forward, as there is no iter_prev function.
3760    * We go forwards first in case we run out of tree.  Then we go backwards to
3761    * fill out the top.
3762    */
3763   while (node && area_below > 0)
3764     {
3765       if (node->children)
3766         {
3767           GtkTreeIter parent = iter;
3768           gboolean has_child;
3769
3770           tree = node->children;
3771           node = tree->root;
3772
3773           g_assert (node != tree->nil);
3774
3775           while (node->left != tree->nil)
3776             node = node->left;
3777           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3778                                                     &iter,
3779                                                     &parent);
3780           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
3781           gtk_tree_path_down (path);
3782         }
3783       else
3784         {
3785           gboolean done = FALSE;
3786           do
3787             {
3788               node = _gtk_rbtree_next (tree, node);
3789               if (node != NULL)
3790                 {
3791                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3792                   done = TRUE;
3793
3794                   /* Sanity Check! */
3795                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
3796                 }
3797               else
3798                 {
3799                   GtkTreeIter parent_iter = iter;
3800                   gboolean has_parent;
3801
3802                   node = tree->parent_node;
3803                   tree = tree->parent_tree;
3804                   if (tree == NULL)
3805                     break;
3806                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3807                                                            &iter,
3808                                                            &parent_iter);
3809
3810                   /* Sanity check */
3811                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
3812                 }
3813             }
3814           while (!done);
3815         }
3816       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3817           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3818         {
3819           validated_area = TRUE;
3820           if (validate_row (tree_view, tree, node, &iter, path))
3821             size_changed = TRUE;
3822         }
3823       if (node)
3824         area_below -= MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3825     }
3826   gtk_tree_path_free (path);
3827
3828   /* If we ran out of tree, and have extra area_below left, we need to remove it from the area_above */
3829   if (area_below > 0)
3830     area_above += area_below;
3831
3832   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
3833   _gtk_rbtree_prev_full (tree, node, &tree, &node);
3834   if (! gtk_tree_path_prev (above_path) && node != NULL)
3835     {
3836       gtk_tree_path_free (above_path);
3837       above_path = _gtk_tree_view_find_path (tree_view, tree, node);
3838     }
3839
3840   while (node != NULL && area_above > 0)
3841     {
3842       /* We walk ever so slowly backwards... */
3843       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
3844
3845       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3846           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3847         {
3848           validated_area = TRUE;
3849           if (validate_row (tree_view, tree, node, &iter, above_path))
3850             size_changed = TRUE;
3851         }
3852       area_above -= MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3853
3854       _gtk_rbtree_prev_full (tree, node, &tree, &node);
3855       if (! gtk_tree_path_prev (above_path) && node)
3856         {
3857           gtk_tree_path_free (above_path);
3858           above_path = _gtk_tree_view_find_path (tree_view, tree, node);
3859         }
3860       modify_dy = TRUE;
3861     }
3862
3863   /* if we walk backwards at all, then we need to reset our dy. */
3864   if (modify_dy && node != NULL)
3865     {
3866       gtk_tree_row_reference_free (tree_view->priv->top_row);
3867       tree_view->priv->top_row =
3868         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, above_path);
3869       tree_view->priv->top_row_dy = - area_above;
3870     }
3871   else
3872     {
3873       /* hrm. */
3874     }
3875
3876   if (tree_view->priv->scroll_to_path)
3877     {
3878       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
3879       tree_view->priv->scroll_to_path = NULL;
3880     }
3881
3882   if (above_path)
3883     gtk_tree_path_free (above_path);
3884
3885   if (tree_view->priv->scroll_to_column)
3886     {
3887       tree_view->priv->scroll_to_column = NULL;
3888     }
3889   if (size_changed)
3890     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
3891   if (validated_area)
3892     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3893 }
3894
3895
3896 /* Our strategy for finding nodes to validate is a little convoluted.  We find
3897  * the left-most uninvalidated node.  We then try walking right, validating
3898  * nodes.  Once we find a valid node, we repeat the previous process of finding
3899  * the first invalid node.
3900  */
3901
3902 static gboolean
3903 validate_rows_handler (GtkTreeView *tree_view)
3904 {
3905   GtkRBTree *tree = NULL;
3906   GtkRBNode *node = NULL;
3907   gboolean validated_area = FALSE;
3908   gint retval = TRUE;
3909   GtkTreePath *path = NULL;
3910   GtkTreeIter iter;
3911   gint i = 0;
3912   g_assert (tree_view);
3913
3914   GDK_THREADS_ENTER ();
3915
3916   if (tree_view->priv->tree == NULL)
3917     {
3918       tree_view->priv->validate_rows_timer = 0;
3919       GDK_THREADS_LEAVE ();
3920       return FALSE;
3921     }
3922
3923   do
3924     {
3925
3926       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
3927         {
3928           retval = FALSE;
3929           goto done;
3930         }
3931
3932       if (path != NULL)
3933         {
3934           node = _gtk_rbtree_next (tree, node);
3935           if (node != NULL)
3936             {
3937               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
3938               gtk_tree_path_next (path);
3939             }
3940           else
3941             {
3942               gtk_tree_path_free (path);
3943               path = NULL;
3944             }
3945         }
3946
3947       if (path == NULL)
3948         {
3949           tree = tree_view->priv->tree;
3950           node = tree_view->priv->tree->root;
3951
3952           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
3953
3954           do
3955             {
3956               if (node->left != tree->nil &&
3957                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
3958                 {
3959                   node = node->left;
3960                 }
3961               else if (node->right != tree->nil &&
3962                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
3963                 {
3964                   node = node->right;
3965                 }
3966               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3967                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3968                 {
3969                   break;
3970                 }
3971               else if (node->children != NULL)
3972                 {
3973                   tree = node->children;
3974                   node = tree->root;
3975                 }
3976               else
3977                 /* RBTree corruption!  All bad */
3978                 g_assert_not_reached ();
3979             }
3980           while (TRUE);
3981           path = _gtk_tree_view_find_path (tree_view, tree, node);
3982           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3983         }
3984       validated_area = validate_row (tree_view, tree, node, &iter, path) | validated_area;
3985       i++;
3986     }
3987   while (i < GTK_TREE_VIEW_NUM_ROWS_PER_IDLE);
3988
3989  done:
3990   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
3991     gtk_tree_view_top_row_to_dy (tree_view);
3992   else
3993     gtk_tree_view_dy_to_top_row (tree_view);
3994
3995   if (path) gtk_tree_path_free (path);
3996   if (validated_area)
3997     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
3998   if (! retval)
3999     tree_view->priv->validate_rows_timer = 0;
4000
4001   GDK_THREADS_LEAVE ();
4002
4003   return retval;
4004 }
4005
4006 static gboolean
4007 presize_handler_callback (gpointer data)
4008 {
4009   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
4010
4011   GDK_THREADS_ENTER ();
4012
4013   if (tree_view->priv->mark_rows_col_dirty)
4014     {
4015       if (tree_view->priv->tree)
4016         _gtk_rbtree_column_invalid (tree_view->priv->tree);
4017       tree_view->priv->mark_rows_col_dirty = FALSE;
4018     }
4019   validate_visible_area (tree_view);
4020   tree_view->priv->presize_handler_timer = 0;
4021
4022   GDK_THREADS_LEAVE ();
4023
4024   return FALSE;
4025 }
4026
4027 static void
4028 install_presize_handler (GtkTreeView *tree_view)
4029 {
4030   if (! GTK_WIDGET_REALIZED (tree_view))
4031     return;
4032
4033   if (! tree_view->priv->presize_handler_timer)
4034     {
4035       tree_view->priv->presize_handler_timer =
4036         g_idle_add_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
4037     }
4038   if (! tree_view->priv->validate_rows_timer)
4039     {
4040       tree_view->priv->validate_rows_timer =
4041         g_idle_add_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
4042     }
4043 }
4044
4045 /* Always call this iff dy is in the visible range.  If the tree is empty, then
4046  * it's set to be NULL, and top_row_dy is 0;
4047  */
4048 static void
4049 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
4050 {
4051   GtkTreePath *path;
4052   GtkRBTree *tree;
4053   GtkRBNode *node;
4054
4055   gtk_tree_row_reference_free (tree_view->priv->top_row);
4056   if (tree_view->priv->tree == NULL)
4057     tree = NULL;
4058   else
4059     tree_view->priv->top_row_dy = _gtk_rbtree_find_offset (tree_view->priv->tree,
4060                                                            tree_view->priv->dy,
4061                                                            &tree, &node);
4062   if (tree == NULL)
4063     {
4064       tree_view->priv->top_row = NULL;
4065       tree_view->priv->top_row_dy = 0;
4066       return;
4067     }
4068
4069   path = _gtk_tree_view_find_path (tree_view, tree, node);
4070   tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
4071   gtk_tree_path_free (path);
4072 }
4073
4074 static void
4075 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
4076 {
4077   GtkTreePath *path;
4078   GtkRBTree *tree;
4079   GtkRBNode *node;
4080
4081   if (tree_view->priv->top_row)
4082     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
4083   else
4084     path = NULL;
4085
4086   if (!path)
4087     tree = NULL;
4088   else
4089     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
4090
4091   if (path)
4092     gtk_tree_path_free (path);
4093
4094   if (tree == NULL)
4095     {
4096       /* keep dy and set new toprow */
4097       gtk_tree_row_reference_free (tree_view->priv->top_row);
4098       tree_view->priv->top_row = NULL;
4099       tree_view->priv->top_row_dy = 0;
4100       gtk_tree_view_dy_to_top_row (tree_view);
4101       return;
4102     }
4103
4104   if (MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size)
4105       < tree_view->priv->top_row_dy)
4106     {
4107       /* new top row */
4108       gtk_tree_view_dy_to_top_row (tree_view);
4109       return;
4110     }
4111
4112   tree_view->priv->dy = _gtk_rbtree_node_find_offset (tree, node);
4113   tree_view->priv->dy += tree_view->priv->top_row_dy;
4114   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4115                             tree_view->priv->dy);
4116 }
4117
4118 void
4119 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
4120 {
4121   tree_view->priv->mark_rows_col_dirty = TRUE;
4122
4123   install_presize_handler (tree_view);
4124 }
4125
4126 /* Drag-and-drop */
4127
4128 static void
4129 set_source_row (GdkDragContext *context,
4130                 GtkTreeModel   *model,
4131                 GtkTreePath    *source_row)
4132 {
4133   g_object_set_data_full (G_OBJECT (context),
4134                           "gtk-tree-view-source-row",
4135                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
4136                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
4137 }
4138
4139 static GtkTreePath*
4140 get_source_row (GdkDragContext *context)
4141 {
4142   GtkTreeRowReference *ref =
4143     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
4144
4145   if (ref)
4146     return gtk_tree_row_reference_get_path (ref);
4147   else
4148     return NULL;
4149 }
4150
4151
4152 static void
4153 set_dest_row (GdkDragContext *context,
4154               GtkTreeModel   *model,
4155               GtkTreePath    *dest_row)
4156 {
4157   g_object_set_data_full (G_OBJECT (context),
4158                           "gtk-tree-view-dest-row",
4159                           dest_row ? gtk_tree_row_reference_new (model, dest_row) : NULL,
4160                           (GDestroyNotify) (dest_row ? gtk_tree_row_reference_free : NULL));
4161 }
4162
4163 static GtkTreePath*
4164 get_dest_row (GdkDragContext *context)
4165 {
4166   GtkTreeRowReference *ref =
4167     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
4168
4169   if (ref)
4170     return gtk_tree_row_reference_get_path (ref);
4171   else
4172     return NULL;
4173 }
4174
4175 /* Get/set whether drag_motion requested the drag data and
4176  * drag_data_received should thus not actually insert the data,
4177  * since the data doesn't result from a drop.
4178  */
4179 static void
4180 set_status_pending (GdkDragContext *context,
4181                     GdkDragAction   suggested_action)
4182 {
4183   g_object_set_data (G_OBJECT (context),
4184                      "gtk-tree-view-status-pending",
4185                      GINT_TO_POINTER (suggested_action));
4186 }
4187
4188 static GdkDragAction
4189 get_status_pending (GdkDragContext *context)
4190 {
4191   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
4192                                              "gtk-tree-view-status-pending"));
4193 }
4194
4195 static TreeViewDragInfo*
4196 get_info (GtkTreeView *tree_view)
4197 {
4198   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
4199 }
4200
4201 static void
4202 clear_source_info (TreeViewDragInfo *di)
4203 {
4204   if (di->source_target_list)
4205     gtk_target_list_unref (di->source_target_list);
4206
4207   di->source_target_list = NULL;
4208 }
4209
4210 static void
4211 clear_dest_info (TreeViewDragInfo *di)
4212 {
4213   if (di->dest_target_list)
4214     gtk_target_list_unref (di->dest_target_list);
4215
4216   di->dest_target_list = NULL;
4217 }
4218
4219 static void
4220 destroy_info (TreeViewDragInfo *di)
4221 {
4222   clear_source_info (di);
4223   clear_dest_info (di);
4224   g_free (di);
4225 }
4226
4227 static TreeViewDragInfo*
4228 ensure_info (GtkTreeView *tree_view)
4229 {
4230   TreeViewDragInfo *di;
4231
4232   di = get_info (tree_view);
4233
4234   if (di == NULL)
4235     {
4236       di = g_new0 (TreeViewDragInfo, 1);
4237
4238       g_object_set_data_full (G_OBJECT (tree_view),
4239                               "gtk-tree-view-drag-info",
4240                               di,
4241                               (GDestroyNotify) destroy_info);
4242     }
4243
4244   return di;
4245 }
4246
4247 static void
4248 remove_info (GtkTreeView *tree_view)
4249 {
4250   g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
4251 }
4252
4253 #if 0
4254 static gint
4255 drag_scan_timeout (gpointer data)
4256 {
4257   GtkTreeView *tree_view;
4258   gint x, y;
4259   GdkModifierType state;
4260   GtkTreePath *path = NULL;
4261   GtkTreeViewColumn *column = NULL;
4262   GdkRectangle visible_rect;
4263
4264   GDK_THREADS_ENTER ();
4265
4266   tree_view = GTK_TREE_VIEW (data);
4267
4268   gdk_window_get_pointer (tree_view->priv->bin_window,
4269                           &x, &y, &state);
4270
4271   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4272
4273   /* See if we are near the edge. */
4274   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
4275       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
4276       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
4277       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
4278     {
4279       gtk_tree_view_get_path_at_pos (tree_view,
4280                                      tree_view->priv->bin_window,
4281                                      x, y,
4282                                      &path,
4283                                      &column,
4284                                      NULL,
4285                                      NULL);
4286
4287       if (path != NULL)
4288         {
4289           gtk_tree_view_scroll_to_cell (tree_view,
4290                                         path,
4291                                         column,
4292                                         TRUE,
4293                                         0.5, 0.5);
4294
4295           gtk_tree_path_free (path);
4296         }
4297     }
4298
4299   GDK_THREADS_LEAVE ();
4300
4301   return TRUE;
4302 }
4303 #endif /* 0 */
4304
4305 static void
4306 remove_scroll_timeout (GtkTreeView *tree_view)
4307 {
4308   if (tree_view->priv->scroll_timeout != 0)
4309     {
4310       gtk_timeout_remove (tree_view->priv->scroll_timeout);
4311       tree_view->priv->scroll_timeout = 0;
4312     }
4313 }
4314 static gboolean
4315 check_model_dnd (GtkTreeModel *model,
4316                  GType         required_iface,
4317                  const gchar  *signal)
4318 {
4319   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
4320     {
4321       g_warning ("You must override the default '%s' handler "
4322                  "on GtkTreeView when using models that don't support "
4323                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
4324                  "is to connect to '%s' and call "
4325                  "gtk_signal_emit_stop_by_name() in your signal handler to prevent "
4326                  "the default handler from running. Look at the source code "
4327                  "for the default handler in gtktreeview.c to get an idea what "
4328                  "your handler should do. (gtktreeview.c is in the GTK source "
4329                  "code.) If you're using GTK from a language other than C, "
4330                  "there may be a more natural way to override default handlers, e.g. via derivation.",
4331                  signal, g_type_name (required_iface), signal);
4332       return FALSE;
4333     }
4334   else
4335     return TRUE;
4336 }
4337
4338 static void
4339 remove_open_timeout (GtkTreeView *tree_view)
4340 {
4341   if (tree_view->priv->open_dest_timeout != 0)
4342     {
4343       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
4344       tree_view->priv->open_dest_timeout = 0;
4345     }
4346 }
4347
4348
4349 static gint
4350 open_row_timeout (gpointer data)
4351 {
4352   GtkTreeView *tree_view = data;
4353   GtkTreePath *dest_path = NULL;
4354   GtkTreeViewDropPosition pos;
4355   gboolean result = FALSE;
4356
4357   GDK_THREADS_ENTER ();
4358
4359   gtk_tree_view_get_drag_dest_row (tree_view,
4360                                    &dest_path,
4361                                    &pos);
4362
4363   if (dest_path &&
4364       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4365        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
4366     {
4367       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
4368       tree_view->priv->open_dest_timeout = 0;
4369
4370       gtk_tree_path_free (dest_path);
4371     }
4372   else
4373     {
4374       if (dest_path)
4375         gtk_tree_path_free (dest_path);
4376
4377       result = TRUE;
4378     }
4379
4380   GDK_THREADS_LEAVE ();
4381
4382   return result;
4383 }
4384
4385 static gint
4386 scroll_row_timeout (gpointer data)
4387 {
4388   GtkTreeView *tree_view = data;
4389
4390   GDK_THREADS_ENTER ();
4391
4392   gtk_tree_view_vertical_autoscroll (tree_view);
4393
4394   GDK_THREADS_LEAVE ();
4395
4396   return TRUE;
4397 }
4398
4399 /* Returns TRUE if event should not be propagated to parent widgets */
4400 static gboolean
4401 set_destination_row (GtkTreeView    *tree_view,
4402                      GdkDragContext *context,
4403                      gint            x,
4404                      gint            y,
4405                      GdkDragAction  *suggested_action,
4406                      GdkAtom        *target)
4407 {
4408   GtkTreePath *path = NULL;
4409   GtkTreeViewDropPosition pos;
4410   GtkTreeViewDropPosition old_pos;
4411   TreeViewDragInfo *di;
4412   GtkWidget *widget;
4413   GtkTreePath *old_dest_path = NULL;
4414
4415   *suggested_action = 0;
4416   *target = GDK_NONE;
4417
4418   widget = GTK_WIDGET (tree_view);
4419
4420   di = get_info (tree_view);
4421
4422   if (di == NULL)
4423     {
4424       /* someone unset us as a drag dest, note that if
4425        * we return FALSE drag_leave isn't called
4426        */
4427
4428       gtk_tree_view_set_drag_dest_row (tree_view,
4429                                        NULL,
4430                                        GTK_TREE_VIEW_DROP_BEFORE);
4431
4432       remove_scroll_timeout (GTK_TREE_VIEW (widget));
4433       remove_open_timeout (GTK_TREE_VIEW (widget));
4434
4435       return FALSE; /* no longer a drop site */
4436     }
4437
4438   *target = gtk_drag_dest_find_target (widget, context, di->dest_target_list);
4439   if (*target == GDK_NONE)
4440     {
4441       return FALSE;
4442     }
4443
4444   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
4445                                           x, y,
4446                                           &path,
4447                                           &pos))
4448     {
4449       /* can't drop here */
4450       remove_open_timeout (tree_view);
4451
4452       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4453                                        NULL,
4454                                        GTK_TREE_VIEW_DROP_BEFORE);
4455
4456       if (path)
4457         gtk_tree_path_free (path);
4458
4459       /* don't propagate to parent though */
4460       return TRUE;
4461     }
4462
4463   g_assert (path);
4464
4465   /* If we left the current row's "open" zone, unset the timeout for
4466    * opening the row
4467    */
4468   gtk_tree_view_get_drag_dest_row (tree_view,
4469                                    &old_dest_path,
4470                                    &old_pos);
4471
4472   if (old_dest_path &&
4473       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
4474        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4475          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
4476     remove_open_timeout (tree_view);
4477
4478   if (old_dest_path)
4479     gtk_tree_path_free (old_dest_path);
4480
4481   if (TRUE /* FIXME if the location droppable predicate */)
4482     {
4483       GtkWidget *source_widget;
4484
4485       *suggested_action = context->suggested_action;
4486
4487       source_widget = gtk_drag_get_source_widget (context);
4488
4489       if (source_widget == widget)
4490         {
4491           /* Default to MOVE, unless the user has
4492            * pressed ctrl or alt to affect available actions
4493            */
4494           if ((context->actions & GDK_ACTION_MOVE) != 0)
4495             *suggested_action = GDK_ACTION_MOVE;
4496         }
4497
4498       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4499                                        path, pos);
4500     }
4501   else
4502     {
4503       /* can't drop here */
4504       remove_open_timeout (tree_view);
4505
4506       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4507                                        NULL,
4508                                        GTK_TREE_VIEW_DROP_BEFORE);
4509     }
4510
4511   if (path)
4512     gtk_tree_path_free (path);
4513
4514   return TRUE;
4515 }
4516 static GtkTreePath*
4517 get_logical_dest_row (GtkTreeView *tree_view)
4518
4519 {
4520   /* adjust path to point to the row the drop goes in front of */
4521   GtkTreePath *path = NULL;
4522   GtkTreeViewDropPosition pos;
4523
4524   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
4525
4526   if (path == NULL)
4527     return NULL;
4528
4529   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
4530     ; /* do nothing */
4531   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
4532            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
4533     {
4534       /* get first child, drop before it */
4535       gtk_tree_path_down (path);
4536     }
4537   else
4538     {
4539       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
4540       gtk_tree_path_next (path);
4541     }
4542
4543   return path;
4544 }
4545
4546 static gboolean
4547 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
4548                                         GdkEventMotion   *event)
4549 {
4550   GdkDragContext *context;
4551   TreeViewDragInfo *di;
4552   GtkTreePath *path = NULL;
4553   gint button;
4554   gint cell_x, cell_y;
4555   GtkTreeModel *model;
4556   gboolean retval = FALSE;
4557
4558   di = get_info (tree_view);
4559
4560   if (di == NULL)
4561     goto out;
4562
4563   if (tree_view->priv->pressed_button < 0)
4564     goto out;
4565
4566   if (!gtk_drag_check_threshold (GTK_WIDGET (tree_view),
4567                                  tree_view->priv->press_start_x,
4568                                  tree_view->priv->press_start_y,
4569                                  event->x, event->y))
4570     goto out;
4571
4572   model = gtk_tree_view_get_model (tree_view);
4573
4574   if (model == NULL)
4575     goto out;
4576
4577   button = tree_view->priv->pressed_button;
4578   tree_view->priv->pressed_button = -1;
4579
4580   gtk_tree_view_get_path_at_pos (tree_view,
4581                                  tree_view->priv->press_start_x,
4582                                  tree_view->priv->press_start_y,
4583                                  &path,
4584                                  NULL,
4585                                  &cell_x,
4586                                  &cell_y);
4587
4588   if (path == NULL)
4589     goto out;
4590
4591   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
4592       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
4593                                            path))
4594     goto out;
4595
4596   /* FIXME Check whether we're a start button, if not return FALSE and
4597    * free path
4598    */
4599
4600   /* Now we can begin the drag */
4601
4602   retval = TRUE;
4603
4604   context = gtk_drag_begin (GTK_WIDGET (tree_view),
4605                             di->source_target_list,
4606                             di->source_actions,
4607                             button,
4608                             (GdkEvent*)event);
4609
4610   gtk_drag_set_icon_default (context);
4611
4612   {
4613     GdkPixmap *row_pix;
4614
4615     row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
4616                                                   path);
4617
4618     gtk_drag_set_icon_pixmap (context,
4619                               gdk_drawable_get_colormap (row_pix),
4620                               row_pix,
4621                               NULL,
4622                               /* the + 1 is for the black border in the icon */
4623                               tree_view->priv->press_start_x + 1,
4624                               cell_y + 1);
4625
4626     gdk_pixmap_unref (row_pix);
4627   }
4628
4629   set_source_row (context, model, path);
4630
4631  out:
4632   if (path)
4633     gtk_tree_path_free (path);
4634
4635   return retval;
4636 }
4637
4638
4639 static void
4640 gtk_tree_view_drag_begin (GtkWidget      *widget,
4641                           GdkDragContext *context)
4642 {
4643   /* do nothing */
4644 }
4645
4646 static void
4647 gtk_tree_view_drag_end (GtkWidget      *widget,
4648                         GdkDragContext *context)
4649 {
4650   /* do nothing */
4651 }
4652
4653 /* Default signal implementations for the drag signals */
4654 static void
4655 gtk_tree_view_drag_data_get (GtkWidget        *widget,
4656                              GdkDragContext   *context,
4657                              GtkSelectionData *selection_data,
4658                              guint             info,
4659                              guint             time)
4660 {
4661   GtkTreeView *tree_view;
4662   GtkTreeModel *model;
4663   TreeViewDragInfo *di;
4664   GtkTreePath *source_row;
4665
4666   tree_view = GTK_TREE_VIEW (widget);
4667
4668   model = gtk_tree_view_get_model (tree_view);
4669
4670   if (model == NULL)
4671     return;
4672
4673   di = get_info (GTK_TREE_VIEW (widget));
4674
4675   if (di == NULL)
4676     return;
4677
4678   source_row = get_source_row (context);
4679
4680   if (source_row == NULL)
4681     return;
4682
4683   /* We can implement the GTK_TREE_MODEL_ROW target generically for
4684    * any model; for DragSource models there are some other targets
4685    * we also support.
4686    */
4687
4688   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
4689       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
4690                                           source_row,
4691                                           selection_data))
4692     goto done;
4693
4694   /* If drag_data_get does nothing, try providing row data. */
4695   if (selection_data->target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
4696     {
4697       gtk_tree_set_row_drag_data (selection_data,
4698                                   model,
4699                                   source_row);
4700     }
4701
4702  done:
4703   gtk_tree_path_free (source_row);
4704 }
4705
4706
4707 static void
4708 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
4709                                 GdkDragContext *context)
4710 {
4711   TreeViewDragInfo *di;
4712   GtkTreeModel *model;
4713   GtkTreeView *tree_view;
4714   GtkTreePath *source_row;
4715
4716   tree_view = GTK_TREE_VIEW (widget);
4717   model = gtk_tree_view_get_model (tree_view);
4718
4719   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
4720     return;
4721
4722   di = get_info (tree_view);
4723
4724   if (di == NULL)
4725     return;
4726
4727   source_row = get_source_row (context);
4728
4729   if (source_row == NULL)
4730     return;
4731
4732   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
4733                                          source_row);
4734
4735   gtk_tree_path_free (source_row);
4736
4737   set_source_row (context, NULL, NULL);
4738 }
4739
4740 static void
4741 gtk_tree_view_drag_leave (GtkWidget      *widget,
4742                           GdkDragContext *context,
4743                           guint             time)
4744 {
4745   TreeViewDragInfo *di;
4746
4747   di = get_info (GTK_TREE_VIEW (widget));
4748
4749   /* unset any highlight row */
4750   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4751                                    NULL,
4752                                    GTK_TREE_VIEW_DROP_BEFORE);
4753
4754   remove_scroll_timeout (GTK_TREE_VIEW (widget));
4755   remove_open_timeout (GTK_TREE_VIEW (widget));
4756 }
4757
4758
4759 static gboolean
4760 gtk_tree_view_drag_motion (GtkWidget        *widget,
4761                            GdkDragContext   *context,
4762                            gint              x,
4763                            gint              y,
4764                            guint             time)
4765 {
4766   GtkTreePath *path = NULL;
4767   GtkTreeViewDropPosition pos;
4768   GtkTreeView *tree_view;
4769   GdkDragAction suggested_action = 0;
4770   GdkAtom target;
4771
4772   tree_view = GTK_TREE_VIEW (widget);
4773
4774   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
4775     return FALSE;
4776
4777   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
4778
4779   if (path == NULL)
4780     {
4781       /* Can't drop here. */
4782       gdk_drag_status (context, 0, time);
4783     }
4784   else
4785     {
4786       if (tree_view->priv->open_dest_timeout == 0 &&
4787           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4788            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
4789         {
4790           tree_view->priv->open_dest_timeout =
4791             gtk_timeout_add (500, open_row_timeout, tree_view);
4792         }
4793       else if (tree_view->priv->scroll_timeout == 0)
4794         {
4795           tree_view->priv->scroll_timeout =
4796             gtk_timeout_add (150, scroll_row_timeout, tree_view);
4797         }
4798
4799       if (target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
4800         {
4801           /* Request data so we can use the source row when
4802            * determining whether to accept the drop
4803            */
4804           set_status_pending (context, suggested_action);
4805           gtk_drag_get_data (widget, context, target, time);
4806         }
4807       else
4808         {
4809           set_status_pending (context, 0);
4810           gdk_drag_status (context, suggested_action, time);
4811         }
4812     }
4813
4814   if (path)
4815     gtk_tree_path_free (path);
4816
4817   return TRUE;
4818 }
4819
4820
4821 static gboolean
4822 gtk_tree_view_drag_drop (GtkWidget        *widget,
4823                          GdkDragContext   *context,
4824                          gint              x,
4825                          gint              y,
4826                          guint             time)
4827 {
4828   GtkTreeView *tree_view;
4829   GtkTreePath *path;
4830   GdkDragAction suggested_action = 0;
4831   GdkAtom target = GDK_NONE;
4832   TreeViewDragInfo *di;
4833   GtkTreeModel *model;
4834
4835   tree_view = GTK_TREE_VIEW (widget);
4836
4837   model = gtk_tree_view_get_model (tree_view);
4838
4839   remove_scroll_timeout (GTK_TREE_VIEW (widget));
4840   remove_open_timeout (GTK_TREE_VIEW (widget));
4841
4842   di = get_info (tree_view);
4843
4844   if (di == NULL)
4845     return FALSE;
4846
4847   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
4848     return FALSE;
4849
4850   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
4851     return FALSE;
4852
4853   path = get_logical_dest_row (tree_view);
4854
4855   if (target != GDK_NONE && path != NULL)
4856     {
4857       /* in case a motion had requested drag data, change things so we
4858        * treat drag data receives as a drop.
4859        */
4860       set_status_pending (context, 0);
4861
4862       set_dest_row (context, model, path);
4863     }
4864
4865   if (path)
4866     gtk_tree_path_free (path);
4867
4868   /* Unset this thing */
4869   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4870                                    NULL,
4871                                    GTK_TREE_VIEW_DROP_BEFORE);
4872
4873   if (target != GDK_NONE)
4874     {
4875       gtk_drag_get_data (widget, context, target, time);
4876       return TRUE;
4877     }
4878   else
4879     return FALSE;
4880 }
4881
4882 static void
4883 gtk_tree_view_drag_data_received (GtkWidget        *widget,
4884                                   GdkDragContext   *context,
4885                                   gint              x,
4886                                   gint              y,
4887                                   GtkSelectionData *selection_data,
4888                                   guint             info,
4889                                   guint             time)
4890 {
4891   GtkTreePath *path;
4892   TreeViewDragInfo *di;
4893   gboolean accepted = FALSE;
4894   GtkTreeModel *model;
4895   GtkTreeView *tree_view;
4896   GtkTreePath *dest_row;
4897   GdkDragAction suggested_action;
4898
4899   tree_view = GTK_TREE_VIEW (widget);
4900
4901   model = gtk_tree_view_get_model (tree_view);
4902
4903   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
4904     return;
4905
4906   di = get_info (tree_view);
4907
4908   if (di == NULL)
4909     return;
4910
4911   suggested_action = get_status_pending (context);
4912
4913   if (suggested_action)
4914     {
4915       /* We are getting this data due to a request in drag_motion,
4916        * rather than due to a request in drag_drop, so we are just
4917        * supposed to call drag_status, not actually paste in the
4918        * data.
4919        */
4920       path = get_logical_dest_row (tree_view);
4921
4922       if (path == NULL)
4923         suggested_action = 0;
4924
4925       if (suggested_action)
4926         {
4927           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
4928                                                      path,
4929                                                      selection_data))
4930             suggested_action = 0;
4931         }
4932
4933       gdk_drag_status (context, suggested_action, time);
4934
4935       if (path)
4936         gtk_tree_path_free (path);
4937
4938       /* If you can't drop, remove user drop indicator until the next motion */
4939       if (suggested_action == 0)
4940         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4941                                          NULL,
4942                                          GTK_TREE_VIEW_DROP_BEFORE);
4943
4944       return;
4945     }
4946
4947   dest_row = get_dest_row (context);
4948
4949   if (dest_row == NULL)
4950     return;
4951
4952   if (selection_data->length >= 0)
4953     {
4954       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
4955                                                  dest_row,
4956                                                  selection_data))
4957         accepted = TRUE;
4958     }
4959
4960   gtk_drag_finish (context,
4961                    accepted,
4962                    (context->action == GDK_ACTION_MOVE),
4963                    time);
4964
4965   gtk_tree_path_free (dest_row);
4966
4967   /* drop dest_row */
4968   set_dest_row (context, NULL, NULL);
4969 }
4970
4971
4972
4973 /* GtkContainer Methods
4974  */
4975
4976
4977 static void
4978 gtk_tree_view_remove (GtkContainer *container,
4979                       GtkWidget    *widget)
4980 {
4981   GtkTreeView *tree_view;
4982   GtkTreeViewChild *child = NULL;
4983   GList *tmp_list;
4984
4985   g_return_if_fail (GTK_IS_TREE_VIEW (container));
4986
4987   tree_view = GTK_TREE_VIEW (container);
4988
4989   tmp_list = tree_view->priv->children;
4990   while (tmp_list)
4991     {
4992       child = tmp_list->data;
4993       if (child->widget == widget)
4994         {
4995           gtk_widget_unparent (widget);
4996
4997           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
4998           g_list_free_1 (tmp_list);
4999           g_free (child);
5000           return;
5001         }
5002
5003       tmp_list = tmp_list->next;
5004     }
5005
5006   tmp_list = tree_view->priv->columns;
5007
5008   while (tmp_list)
5009     {
5010       GtkTreeViewColumn *column;
5011       column = tmp_list->data;
5012       if (column->button == widget)
5013         {
5014           gtk_widget_unparent (widget);
5015           return;
5016         }
5017       tmp_list = tmp_list->next;
5018     }
5019 }
5020
5021 static void
5022 gtk_tree_view_forall (GtkContainer *container,
5023                       gboolean      include_internals,
5024                       GtkCallback   callback,
5025                       gpointer      callback_data)
5026 {
5027   GtkTreeView *tree_view;
5028   GtkTreeViewChild *child = NULL;
5029   GtkTreeViewColumn *column;
5030   GList *tmp_list;
5031
5032   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5033   g_return_if_fail (callback != NULL);
5034
5035   tree_view = GTK_TREE_VIEW (container);
5036
5037   tmp_list = tree_view->priv->children;
5038   while (tmp_list)
5039     {
5040       child = tmp_list->data;
5041       tmp_list = tmp_list->next;
5042
5043       (* callback) (child->widget, callback_data);
5044     }
5045   if (include_internals == FALSE)
5046     return;
5047
5048   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5049     {
5050       column = tmp_list->data;
5051
5052       if (column->button)
5053         (* callback) (column->button, callback_data);
5054     }
5055 }
5056
5057 /* Returns TRUE if the focus is within the headers, after the focus operation is
5058  * done
5059  */
5060 static gboolean
5061 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
5062                             GtkDirectionType  dir)
5063 {
5064   GtkWidget *focus_child;
5065   GtkContainer *container;
5066
5067   GList *last_column, *first_column;
5068   GList *tmp_list;
5069
5070   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5071     return FALSE;
5072
5073   focus_child = GTK_CONTAINER (tree_view)->focus_child;
5074   container = GTK_CONTAINER (tree_view);
5075
5076   last_column = g_list_last (tree_view->priv->columns);
5077   while (last_column)
5078     {
5079       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
5080           GTK_TREE_VIEW_COLUMN (last_column->data)->clickable &&
5081           GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable &&
5082           GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
5083         break;
5084       last_column = last_column->prev;
5085     }
5086
5087   /* No headers are visible, or are focusable.  We can't focus in or out.
5088    */
5089   if (last_column == NULL)
5090     return FALSE;
5091
5092   first_column = tree_view->priv->columns;
5093   while (first_column)
5094     {
5095       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
5096           GTK_TREE_VIEW_COLUMN (first_column->data)->clickable &&
5097           GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable &&
5098           GTK_TREE_VIEW_COLUMN (first_column->data)->visible)
5099         break;
5100       first_column = first_column->next;
5101     }
5102
5103   switch (dir)
5104     {
5105     case GTK_DIR_TAB_BACKWARD:
5106     case GTK_DIR_TAB_FORWARD:
5107     case GTK_DIR_UP:
5108     case GTK_DIR_DOWN:
5109       if (focus_child == NULL)
5110         {
5111           if (tree_view->priv->focus_column != NULL)
5112             focus_child = tree_view->priv->focus_column->button;
5113           else
5114             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5115           gtk_widget_grab_focus (focus_child);
5116           break;
5117         }
5118       return FALSE;
5119
5120     case GTK_DIR_LEFT:
5121     case GTK_DIR_RIGHT:
5122       if (focus_child == NULL)
5123         {
5124           if (tree_view->priv->focus_column != NULL)
5125             focus_child = tree_view->priv->focus_column->button;
5126           else if (dir == GTK_DIR_LEFT)
5127             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
5128           else
5129             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5130           gtk_widget_grab_focus (focus_child);
5131           break;
5132         }
5133
5134       if (gtk_widget_child_focus (focus_child, dir))
5135         {
5136           /* The focus moves inside the button. */
5137           /* This is probably a great example of bad UI */
5138           break;
5139         }
5140
5141       /* We need to move the focus among the row of buttons. */
5142       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5143         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
5144           break;
5145
5146       if (tmp_list == first_column && dir == GTK_DIR_LEFT)
5147         {
5148           focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
5149           gtk_widget_grab_focus (focus_child);
5150           break;
5151         }
5152       else if (tmp_list == last_column && dir == GTK_DIR_RIGHT)
5153         {
5154           focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5155           gtk_widget_grab_focus (focus_child);
5156           break;
5157         }
5158
5159       while (tmp_list)
5160         {
5161           GtkTreeViewColumn *column;
5162
5163           if (dir == GTK_DIR_RIGHT)
5164             tmp_list = tmp_list->next;
5165           else
5166             tmp_list = tmp_list->prev;
5167
5168           if (tmp_list == NULL)
5169             {
5170               g_warning ("Internal button not found");
5171               break;
5172             }
5173           column = tmp_list->data;
5174           if (column->button &&
5175               column->visible &&
5176               GTK_WIDGET_CAN_FOCUS (column->button))
5177             {
5178               focus_child = column->button;
5179               gtk_widget_grab_focus (column->button);
5180               break;
5181             }
5182         }
5183       break;
5184     default:
5185       g_assert_not_reached ();
5186       break;
5187     }
5188
5189   /* if focus child is non-null, we assume it's been set to the current focus child
5190    */
5191   if (focus_child)
5192     {
5193       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5194         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
5195           break;
5196
5197       tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5198
5199       /* If the following isn't true, then the view is smaller then the scrollpane.
5200        */
5201       if ((focus_child->allocation.x + focus_child->allocation.width) <=
5202           (tree_view->priv->hadjustment->upper))
5203         {
5204           /* Scroll to the button, if needed */
5205           if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
5206               (focus_child->allocation.x + focus_child->allocation.width))
5207             gtk_adjustment_set_value (tree_view->priv->hadjustment,
5208                                       focus_child->allocation.x + focus_child->allocation.width -
5209                                       tree_view->priv->hadjustment->page_size);
5210           else if (tree_view->priv->hadjustment->value > focus_child->allocation.x)
5211             gtk_adjustment_set_value (tree_view->priv->hadjustment,
5212                                       focus_child->allocation.x);
5213         }
5214     }
5215
5216   return (focus_child != NULL);
5217 }
5218
5219 static gint
5220 gtk_tree_view_focus (GtkWidget        *widget,
5221                      GtkDirectionType  direction)
5222 {
5223   GtkTreeView *tree_view;
5224   GtkWidget *focus_child;
5225   GtkContainer *container;
5226
5227   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
5228   g_return_val_if_fail (GTK_WIDGET_VISIBLE (widget), FALSE);
5229
5230   container = GTK_CONTAINER (widget);
5231   tree_view = GTK_TREE_VIEW (widget);
5232
5233   if (!GTK_WIDGET_IS_SENSITIVE (container))
5234     return FALSE;
5235
5236   focus_child = container->focus_child;
5237
5238   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
5239   /* Case 1.  Headers currently have focus. */
5240   if (focus_child)
5241     {
5242       switch (direction)
5243         {
5244         case GTK_DIR_LEFT:
5245         case GTK_DIR_RIGHT:
5246           gtk_tree_view_header_focus (tree_view, direction);
5247           return TRUE;
5248         case GTK_DIR_TAB_BACKWARD:
5249         case GTK_DIR_UP:
5250           return FALSE;
5251         case GTK_DIR_TAB_FORWARD:
5252         case GTK_DIR_DOWN:
5253           if (tree_view->priv->tree == NULL)
5254             return FALSE;
5255           gtk_tree_view_focus_to_cursor (tree_view);
5256           return TRUE;
5257         }
5258     }
5259
5260   /* Case 2. We don't have focus at all. */
5261   if (!GTK_WIDGET_HAS_FOCUS (container))
5262     {
5263       if (tree_view->priv->tree == NULL &&
5264           (direction == GTK_DIR_TAB_BACKWARD ||
5265            direction == GTK_DIR_UP))
5266         return gtk_tree_view_header_focus (tree_view, direction);
5267       if (((direction == GTK_DIR_TAB_FORWARD) ||
5268            (direction == GTK_DIR_RIGHT) ||
5269            (direction == GTK_DIR_DOWN) ||
5270            (direction == GTK_DIR_LEFT)) &&
5271           gtk_tree_view_header_focus (tree_view, direction))
5272         return TRUE;
5273
5274       if (tree_view->priv->tree == NULL)
5275         return FALSE;
5276       gtk_tree_view_focus_to_cursor (tree_view);
5277       return TRUE;
5278     }
5279
5280   /* Case 3. We have focus already. */
5281   if (tree_view->priv->tree == NULL)
5282     return gtk_tree_view_header_focus (tree_view, direction);
5283
5284   if (direction == GTK_DIR_TAB_BACKWARD)
5285     return (gtk_tree_view_header_focus (tree_view, direction));
5286   else if (direction == GTK_DIR_TAB_FORWARD)
5287     return FALSE;
5288
5289   /* Other directions caught by the keybindings */
5290   gtk_tree_view_focus_to_cursor (tree_view);
5291   return TRUE;
5292 }
5293
5294 static void
5295 gtk_tree_view_style_set (GtkWidget *widget,
5296                          GtkStyle *previous_style)
5297 {
5298   GtkTreeView *tree_view;
5299   GList *list;
5300   GtkTreeViewColumn *column;
5301
5302   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
5303
5304   tree_view = GTK_TREE_VIEW (widget);
5305
5306   gtk_widget_style_get (widget,
5307                         "expander_size", &tree_view->priv->expander_size,
5308                         NULL);
5309   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
5310
5311   for (list = tree_view->priv->columns; list; list = list->next)
5312     {
5313       column = list->data;
5314       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
5315     }
5316
5317   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
5318
5319   gtk_widget_queue_resize (widget);
5320 }
5321
5322
5323 static void
5324 gtk_tree_view_set_focus_child (GtkContainer *container,
5325                                GtkWidget    *child)
5326 {
5327   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
5328   GList *list;
5329
5330   for (list = tree_view->priv->columns; list; list = list->next)
5331     {
5332       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
5333         {
5334           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
5335           break;
5336         }
5337     }
5338
5339   (* parent_class->set_focus_child) (container, child);
5340 }
5341
5342 static void
5343 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
5344                                GtkAdjustment *hadj,
5345                                GtkAdjustment *vadj)
5346 {
5347   gboolean need_adjust = FALSE;
5348
5349   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5350
5351   if (hadj)
5352     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
5353   else
5354     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
5355   if (vadj)
5356     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
5357   else
5358     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
5359
5360   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
5361     {
5362       gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->hadjustment), tree_view);
5363       gtk_object_unref (GTK_OBJECT (tree_view->priv->hadjustment));
5364     }
5365
5366   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
5367     {
5368       gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->vadjustment), tree_view);
5369       gtk_object_unref (GTK_OBJECT (tree_view->priv->vadjustment));
5370     }
5371
5372   if (tree_view->priv->hadjustment != hadj)
5373     {
5374       tree_view->priv->hadjustment = hadj;
5375       gtk_object_ref (GTK_OBJECT (tree_view->priv->hadjustment));
5376       gtk_object_sink (GTK_OBJECT (tree_view->priv->hadjustment));
5377
5378       gtk_signal_connect (GTK_OBJECT (tree_view->priv->hadjustment), "value_changed",
5379                           (GtkSignalFunc) gtk_tree_view_adjustment_changed,
5380                           tree_view);
5381       need_adjust = TRUE;
5382     }
5383
5384   if (tree_view->priv->vadjustment != vadj)
5385     {
5386       tree_view->priv->vadjustment = vadj;
5387       gtk_object_ref (GTK_OBJECT (tree_view->priv->vadjustment));
5388       gtk_object_sink (GTK_OBJECT (tree_view->priv->vadjustment));
5389
5390       gtk_signal_connect (GTK_OBJECT (tree_view->priv->vadjustment), "value_changed",
5391                           (GtkSignalFunc) gtk_tree_view_adjustment_changed,
5392                           tree_view);
5393       need_adjust = TRUE;
5394     }
5395
5396   if (need_adjust)
5397     gtk_tree_view_adjustment_changed (NULL, tree_view);
5398 }
5399
5400
5401 static gboolean
5402 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
5403                                 GtkMovementStep    step,
5404                                 gint               count)
5405 {
5406   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
5407   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
5408                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
5409                         step == GTK_MOVEMENT_DISPLAY_LINES ||
5410                         step == GTK_MOVEMENT_PAGES ||
5411                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
5412
5413   if (tree_view->priv->tree == NULL)
5414     return FALSE;
5415   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (tree_view)))
5416     return FALSE;
5417
5418   gtk_tree_view_stop_editing (tree_view, FALSE);
5419   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
5420   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5421
5422   switch (step)
5423     {
5424       /* currently we make no distinction.  When we go bi-di, we need to */
5425     case GTK_MOVEMENT_LOGICAL_POSITIONS:
5426     case GTK_MOVEMENT_VISUAL_POSITIONS:
5427       gtk_tree_view_move_cursor_left_right (tree_view, count);
5428       break;
5429     case GTK_MOVEMENT_DISPLAY_LINES:
5430       gtk_tree_view_move_cursor_up_down (tree_view, count);
5431       break;
5432     case GTK_MOVEMENT_PAGES:
5433       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
5434       break;
5435     case GTK_MOVEMENT_BUFFER_ENDS:
5436       gtk_tree_view_move_cursor_start_end (tree_view, count);
5437       break;
5438     default:
5439       g_assert_not_reached ();
5440     }
5441
5442   return TRUE;
5443 }
5444
5445 static void
5446 gtk_tree_view_put (GtkTreeView *tree_view,
5447                    GtkWidget   *child_widget,
5448                    gint         x,
5449                    gint         y,
5450                    gint         width,
5451                    gint         height)
5452 {
5453   GtkTreeViewChild *child;
5454
5455   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5456   g_return_if_fail (GTK_IS_WIDGET (child_widget));
5457
5458   child = g_new (GtkTreeViewChild, 1);
5459
5460   child->widget = child_widget;
5461   child->x = x;
5462   child->y = y;
5463   child->width = width;
5464   child->height = height;
5465
5466   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
5467
5468   if (GTK_WIDGET_REALIZED (tree_view))
5469     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
5470
5471   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
5472 }
5473
5474 void
5475 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
5476                                   GtkWidget   *widget,
5477                                   gint         x,
5478                                   gint         y,
5479                                   gint         width,
5480                                   gint         height)
5481 {
5482   GtkTreeViewChild *child = NULL;
5483   GList *list;
5484   GdkRectangle allocation;
5485
5486   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5487   g_return_if_fail (GTK_IS_WIDGET (widget));
5488
5489   for (list = tree_view->priv->children; list; list = list->next)
5490     {
5491       if (((GtkTreeViewChild *)list->data)->widget == widget)
5492         {
5493           child = list->data;
5494           break;
5495         }
5496     }
5497   if (child == NULL)
5498     return;
5499
5500   allocation.x = child->x = x;
5501   allocation.y = child->y = y;
5502   allocation.width = child->width = width;
5503   allocation.height = child->height = height;
5504
5505   if (GTK_WIDGET_REALIZED (widget))
5506     gtk_widget_size_allocate (widget, &allocation);
5507 }
5508
5509
5510 /* TreeModel Callbacks
5511  */
5512
5513 static void
5514 gtk_tree_view_row_changed (GtkTreeModel *model,
5515                            GtkTreePath  *path,
5516                            GtkTreeIter  *iter,
5517                            gpointer      data)
5518 {
5519   GtkTreeView *tree_view = (GtkTreeView *)data;
5520   GtkRBTree *tree;
5521   GtkRBNode *node;
5522   gboolean free_path = FALSE;
5523   gint vertical_separator;
5524   GList *list;
5525
5526   g_return_if_fail (path != NULL || iter != NULL);
5527
5528   if (!GTK_WIDGET_REALIZED (tree_view))
5529     /* We can just ignore ::changed signals if we aren't realized, as we don't care about sizes
5530      */
5531     return;
5532
5533   gtk_widget_style_get (GTK_WIDGET (data), "vertical_separator", &vertical_separator, NULL);
5534
5535   if (path == NULL)
5536     {
5537       path = gtk_tree_model_get_path (model, iter);
5538       free_path = TRUE;
5539     }
5540   else if (iter == NULL)
5541     gtk_tree_model_get_iter (model, iter, path);
5542
5543   if (_gtk_tree_view_find_node (tree_view,
5544                                 path,
5545                                 &tree,
5546                                 &node))
5547     /* We aren't actually showing the node */
5548     goto done;
5549
5550   if (tree == NULL)
5551     goto done;
5552
5553   _gtk_rbtree_node_mark_invalid (tree, node);
5554   for (list = tree_view->priv->columns; list; list = list->next)
5555     {
5556       GtkTreeViewColumn *column;
5557
5558       column = list->data;
5559       if (! column->visible)
5560         continue;
5561
5562       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
5563         {
5564           _gtk_tree_view_column_cell_set_dirty (column, TRUE);
5565         }
5566     }
5567
5568  done:
5569   install_presize_handler (tree_view);
5570   if (free_path)
5571     gtk_tree_path_free (path);
5572 }
5573
5574 static void
5575 gtk_tree_view_row_inserted (GtkTreeModel *model,
5576                             GtkTreePath  *path,
5577                             GtkTreeIter  *iter,
5578                             gpointer      data)
5579 {
5580   GtkTreeView *tree_view = (GtkTreeView *) data;
5581   gint *indices;
5582   GtkRBTree *tmptree, *tree;
5583   GtkRBNode *tmpnode = NULL;
5584   gint depth;
5585   gint i = 0;
5586   gboolean free_path = FALSE;
5587
5588   g_return_if_fail (path != NULL || iter != NULL);
5589
5590   if (path == NULL)
5591     {
5592       path = gtk_tree_model_get_path (model, iter);
5593       free_path = TRUE;
5594     }
5595   else if (iter == NULL)
5596     gtk_tree_model_get_iter (model, iter, path);
5597
5598   if (tree_view->priv->tree == NULL)
5599     tree_view->priv->tree = _gtk_rbtree_new ();
5600
5601   tmptree = tree = tree_view->priv->tree;
5602
5603   /* Update all row-references */
5604   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
5605   depth = gtk_tree_path_get_depth (path);
5606   indices = gtk_tree_path_get_indices (path);
5607
5608   /* First, find the parent tree */
5609   while (i < depth - 1)
5610     {
5611       if (tmptree == NULL)
5612         {
5613           /* We aren't showing the node */
5614           goto done;
5615         }
5616
5617       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
5618       if (tmpnode == NULL)
5619         {
5620           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
5621                      "This possibly means that a GtkTreeModel inserted a child node\n" \
5622                      "before the parent was inserted.");
5623           goto done;
5624         }
5625       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
5626         {
5627           /* FIXME enforce correct behavior on model, probably */
5628           /* In theory, the model should have emitted has_child_toggled here.  We
5629            * try to catch it anyway, just to be safe, in case the model hasn't.
5630            */
5631           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
5632                                                            tree,
5633                                                            tmpnode);
5634           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
5635           gtk_tree_path_free (tmppath);
5636           goto done;
5637         }
5638
5639       tmptree = tmpnode->children;
5640       tree = tmptree;
5641       i++;
5642     }
5643
5644   if (tree == NULL)
5645     goto done;
5646
5647   /* ref the node */
5648   gtk_tree_model_ref_node (tree_view->priv->model, iter);
5649   if (indices[depth - 1] == 0)
5650     {
5651       tmpnode = _gtk_rbtree_find_count (tree, 1);
5652       _gtk_rbtree_insert_before (tree, tmpnode, 0, FALSE);
5653     }
5654   else
5655     {
5656       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
5657       _gtk_rbtree_insert_after (tree, tmpnode, 0, FALSE);
5658     }
5659
5660  done:
5661   install_presize_handler (tree_view);
5662   if (free_path)
5663     gtk_tree_path_free (path);
5664 }
5665
5666 static void
5667 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
5668                                      GtkTreePath  *path,
5669                                      GtkTreeIter  *iter,
5670                                      gpointer      data)
5671 {
5672   GtkTreeView *tree_view = (GtkTreeView *)data;
5673   GtkTreeIter real_iter;
5674   gboolean has_child;
5675   GtkRBTree *tree;
5676   GtkRBNode *node;
5677   gboolean free_path = FALSE;
5678
5679   g_return_if_fail (path != NULL || iter != NULL);
5680
5681   if (iter)
5682     real_iter = *iter;
5683
5684   if (path == NULL)
5685     {
5686       path = gtk_tree_model_get_path (model, iter);
5687       free_path = TRUE;
5688     }
5689   else if (iter == NULL)
5690     gtk_tree_model_get_iter (model, &real_iter, path);
5691
5692   if (_gtk_tree_view_find_node (tree_view,
5693                                 path,
5694                                 &tree,
5695                                 &node))
5696     /* We aren't actually showing the node */
5697     goto done;
5698
5699   if (tree == NULL)
5700     goto done;
5701
5702   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
5703   /* Sanity check.
5704    */
5705   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
5706     goto done;
5707
5708   if (has_child)
5709     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
5710   else
5711     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
5712
5713   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
5714     {
5715       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
5716       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
5717         {
5718           GList *list;
5719
5720           for (list = tree_view->priv->columns; list; list = list->next)
5721             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
5722               {
5723                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
5724                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
5725                 break;
5726               }
5727         }
5728       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
5729     }
5730   else
5731     {
5732       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5733     }
5734
5735  done:
5736   if (free_path)
5737     gtk_tree_path_free (path);
5738 }
5739
5740 static void
5741 count_children_helper (GtkRBTree *tree,
5742                        GtkRBNode *node,
5743                        gpointer   data)
5744 {
5745   if (node->children)
5746     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
5747   (*((gint *)data))++;
5748 }
5749
5750 static void
5751 gtk_tree_view_row_deleted (GtkTreeModel *model,
5752                            GtkTreePath  *path,
5753                            gpointer      data)
5754 {
5755   GtkTreeView *tree_view = (GtkTreeView *)data;
5756   GtkRBTree *tree;
5757   GtkRBNode *node;
5758   GList *list;
5759   gint selection_changed;
5760
5761   g_return_if_fail (path != NULL);
5762
5763   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
5764
5765   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5766     return;
5767
5768   if (tree == NULL)
5769     return;
5770
5771   /* Change the selection */
5772   selection_changed = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
5773
5774   for (list = tree_view->priv->columns; list; list = list->next)
5775     if (((GtkTreeViewColumn *)list->data)->visible &&
5776         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
5777       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
5778
5779   /* Ensure we don't have a dangling pointer to a dead node */
5780   ensure_unprelighted (tree_view);
5781
5782   /* Cancel editting if we've started */
5783   gtk_tree_view_stop_editing (tree_view, TRUE);
5784
5785   /* If we have a node expanded/collapsed timeout, remove it */
5786   if (tree_view->priv->expand_collapse_timeout != 0)
5787     {
5788       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
5789       tree_view->priv->expand_collapse_timeout = 0;
5790
5791       /* Reset node */
5792       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
5793       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
5794       tree_view->priv->expanded_collapsed_node = NULL;
5795     }
5796
5797   if (tree_view->priv->destroy_count_func)
5798     {
5799       gint child_count = 0;
5800       if (node->children)
5801         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
5802       (* tree_view->priv->destroy_count_func) (tree_view, path, child_count, tree_view->priv->destroy_count_data);
5803     }
5804
5805   if (tree->root->count == 1)
5806     {
5807       if (tree_view->priv->tree == tree)
5808         tree_view->priv->tree = NULL;
5809
5810       _gtk_rbtree_remove (tree);
5811     }
5812   else
5813     {
5814       _gtk_rbtree_remove_node (tree, node);
5815     }
5816
5817   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
5818     gtk_tree_view_top_row_to_dy (tree_view);
5819   else
5820     gtk_tree_view_dy_to_top_row (tree_view);
5821
5822   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
5823
5824   if (selection_changed)
5825     g_signal_emit_by_name (G_OBJECT (tree_view->priv->selection), "changed");
5826 }
5827
5828
5829 static void
5830 gtk_tree_view_rows_reordered (GtkTreeModel *model,
5831                               GtkTreePath  *parent,
5832                               GtkTreeIter  *iter,
5833                               gint         *new_order,
5834                               gpointer      data)
5835 {
5836   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
5837   GtkRBTree *tree;
5838   GtkRBNode *node;
5839   gint len;
5840
5841   len = gtk_tree_model_iter_n_children (model, iter);
5842
5843   if (len < 2)
5844     return;
5845
5846   gtk_tree_row_reference_reordered (G_OBJECT (data),
5847                                     parent,
5848                                     iter,
5849                                     new_order);
5850
5851   if (_gtk_tree_view_find_node (tree_view,
5852                                 parent,
5853                                 &tree,
5854                                 &node))
5855     return;
5856
5857   /* We need to special case the parent path */
5858   if (tree == NULL)
5859     tree = tree_view->priv->tree;
5860   else
5861     tree = node->children;
5862
5863   if (tree == NULL)
5864     return;
5865
5866   /* we need to be unprelighted */
5867   ensure_unprelighted (tree_view);
5868
5869   _gtk_rbtree_reorder (tree, new_order, len);
5870
5871   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
5872
5873   gtk_tree_view_dy_to_top_row (tree_view);
5874 }
5875
5876
5877 /* Internal tree functions
5878  */
5879
5880
5881 static void
5882 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
5883                                      GtkRBTree         *tree,
5884                                      GtkTreeViewColumn *column,
5885                                      gint              *x1,
5886                                      gint              *x2)
5887 {
5888   GtkTreeViewColumn *tmp_column = NULL;
5889   gint total_width;
5890   GList *list;
5891
5892   if (x1)
5893     *x1 = 0;
5894
5895   if (x2)
5896     *x2 = 0;
5897
5898   total_width = 0;
5899   for (list = tree_view->priv->columns; list; list = list->next)
5900     {
5901       tmp_column = list->data;
5902
5903       if (tmp_column == column)
5904         break;
5905
5906       if (tmp_column->visible)
5907         total_width += tmp_column->width;
5908     }
5909
5910   if (tmp_column != column)
5911     {
5912       g_warning (G_STRLOC": passed-in column isn't in the tree");
5913       return;
5914     }
5915
5916   if (x1)
5917     *x1 = total_width;
5918
5919   if (x2)
5920     {
5921       if (column->visible)
5922         *x2 = total_width + column->width;
5923       else
5924         *x2 = total_width; /* width of 0 */
5925     }
5926 }
5927 static void
5928 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
5929                                 GtkRBTree   *tree,
5930                                 gint        *x1,
5931                                 gint        *x2)
5932 {
5933   gint x_offset = 0;
5934   GList *list;
5935   GtkTreeViewColumn *tmp_column = NULL;
5936   gint total_width;
5937   gboolean indent_expanders;
5938
5939   total_width = 0;
5940   for (list = tree_view->priv->columns; list; list = list->next)
5941     {
5942       tmp_column = list->data;
5943
5944       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
5945         {
5946           x_offset = total_width;
5947           break;
5948         }
5949
5950       if (tmp_column->visible)
5951         total_width += tmp_column->width;
5952     }
5953
5954   gtk_widget_style_get (GTK_WIDGET (tree_view),
5955                         "indent_expanders", &indent_expanders,
5956                         NULL);
5957
5958   if (indent_expanders)
5959     x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
5960
5961   if (x1)
5962     *x1 = x_offset;
5963
5964   if (tmp_column && tmp_column->visible)
5965     {
5966       /* +1 because x2 isn't included in the range. */
5967       if (x2)
5968         *x2 = x_offset + tree_view->priv->expander_size + 1;
5969     }
5970   else
5971     {
5972       /* return an empty range, the expander column is hidden */
5973       if (x2)
5974         *x2 = x_offset;
5975     }
5976 }
5977
5978 static void
5979 gtk_tree_view_build_tree (GtkTreeView *tree_view,
5980                           GtkRBTree   *tree,
5981                           GtkTreeIter *iter,
5982                           gint         depth,
5983                           gboolean     recurse)
5984 {
5985   GtkRBNode *temp = NULL;
5986
5987   do
5988     {
5989       gtk_tree_model_ref_node (tree_view->priv->model, iter);
5990       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
5991       if (recurse)
5992         {
5993           GtkTreeIter child;
5994
5995           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
5996             {
5997               temp->children = _gtk_rbtree_new ();
5998               temp->children->parent_tree = tree;
5999               temp->children->parent_node = temp;
6000               gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
6001             }
6002         }
6003       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
6004         {
6005           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
6006             temp->flags ^= GTK_RBNODE_IS_PARENT;
6007           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
6008         }
6009     }
6010   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
6011 }
6012
6013 /* If height is non-NULL, then we set it to be the new height.  if it's all
6014  * dirty, then height is -1.  We know we'll remeasure dirty rows, anyways.
6015  */
6016 static gboolean
6017 gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
6018                                    GtkTreeIter *iter,
6019                                    gint         depth,
6020                                    gint        *height,
6021                                    GtkRBNode   *node)
6022 {
6023   GtkTreeViewColumn *column;
6024   GList *list;
6025   gboolean retval = FALSE;
6026   gint tmpheight;
6027   gint horizontal_separator;
6028
6029   gtk_widget_style_get (GTK_WIDGET (tree_view),
6030                         "horizontal_separator", &horizontal_separator,
6031                         NULL);
6032
6033   if (height)
6034     *height = -1;
6035
6036   for (list = tree_view->priv->columns; list; list = list->next)
6037     {
6038       gint width;
6039       column = list->data;
6040       if (column->dirty == TRUE)
6041         continue;
6042       if (height == NULL && column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
6043         continue;
6044       if (!column->visible)
6045         continue;
6046
6047       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6048                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6049                                                node->children?TRUE:FALSE);
6050
6051       if (height)
6052         {
6053           gtk_tree_view_column_cell_get_size (column,
6054                                               NULL, NULL, NULL,
6055                                               &width, &tmpheight);
6056           *height = MAX (*height, tmpheight);
6057         }
6058       else
6059         {
6060           gtk_tree_view_column_cell_get_size (column,
6061                                               NULL, NULL, NULL,
6062                                               &width, NULL);
6063         }
6064
6065       if (gtk_tree_view_is_expander_column (tree_view, column) &&
6066           TREE_VIEW_DRAW_EXPANDERS (tree_view))
6067         {
6068           if (depth * tree_view->priv->expander_size + horizontal_separator + width > column->requested_width)
6069             {
6070               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6071               retval = TRUE;
6072             }
6073         }
6074       else
6075         {
6076           if (horizontal_separator + width > column->requested_width)
6077             {
6078               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6079               retval = TRUE;
6080             }
6081         }
6082     }
6083
6084   return retval;
6085 }
6086
6087 static void
6088 gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
6089                               GtkRBTree   *tree,
6090                               GtkTreeIter *iter,
6091                               gint         depth)
6092 {
6093   GtkRBNode *temp = tree->root;
6094   GtkTreeViewColumn *column;
6095   GList *list;
6096   GtkTreeIter child;
6097   gboolean is_all_dirty;
6098
6099   TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
6100
6101   while (temp->left != tree->nil)
6102     temp = temp->left;
6103
6104   do
6105     {
6106       TREE_VIEW_INTERNAL_ASSERT_VOID (temp != NULL);
6107       is_all_dirty = TRUE;
6108       for (list = tree_view->priv->columns; list; list = list->next)
6109         {
6110           column = list->data;
6111           if (column->dirty == FALSE)
6112             {
6113               is_all_dirty = FALSE;
6114               break;
6115             }
6116         }
6117
6118       if (is_all_dirty)
6119         return;
6120
6121       gtk_tree_view_discover_dirty_iter (tree_view,
6122                                          iter,
6123                                          depth,
6124                                          NULL,
6125                                          temp);
6126       if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter) &&
6127           temp->children != NULL)
6128         gtk_tree_view_discover_dirty (tree_view, temp->children, &child, depth + 1);
6129       temp = _gtk_rbtree_next (tree, temp);
6130     }
6131   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
6132 }
6133
6134
6135 /* Make sure the node is visible vertically */
6136 static void
6137 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
6138                                   GtkRBTree   *tree,
6139                                   GtkRBNode   *node)
6140 {
6141   gint offset;
6142   gint real_height;
6143
6144   /* We process updates because we want to clear old selected items when we scroll.
6145    * if this is removed, we get a "selection streak" at the bottom. */
6146   if (GTK_WIDGET_REALIZED (tree_view))
6147     gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6148
6149   real_height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
6150
6151   offset = _gtk_rbtree_node_find_offset (tree, node);
6152
6153   /* we reverse the order, b/c in the unusual case of the
6154    * node's height being taller then the visible area, we'd rather
6155    * have the node flush to the top
6156    */
6157   if (offset + real_height >
6158       tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size)
6159     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
6160                               offset + real_height -
6161                               tree_view->priv->vadjustment->page_size);
6162   if (offset < tree_view->priv->vadjustment->value)
6163     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
6164                               offset);
6165
6166 }
6167
6168 static void
6169 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
6170                                     GtkTreeViewColumn *column)
6171 {
6172   if (column == NULL)
6173     return;
6174   if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
6175       (column->button->allocation.x + column->button->allocation.width))
6176     gtk_adjustment_set_value (tree_view->priv->hadjustment,
6177                               column->button->allocation.x + column->button->allocation.width -
6178                               tree_view->priv->hadjustment->page_size);
6179   else if (tree_view->priv->hadjustment->value > column->button->allocation.x)
6180     gtk_adjustment_set_value (tree_view->priv->hadjustment,
6181                               column->button->allocation.x);
6182 }
6183
6184 /* This function could be more efficient.  I'll optimize it if profiling seems
6185  * to imply that it is important */
6186 GtkTreePath *
6187 _gtk_tree_view_find_path (GtkTreeView *tree_view,
6188                           GtkRBTree   *tree,
6189                           GtkRBNode   *node)
6190 {
6191   GtkTreePath *path;
6192   GtkRBTree *tmp_tree;
6193   GtkRBNode *tmp_node, *last;
6194   gint count;
6195
6196   path = gtk_tree_path_new ();
6197
6198   g_return_val_if_fail (node != NULL, path);
6199   g_return_val_if_fail (node != tree->nil, path);
6200
6201   count = 1 + node->left->count;
6202
6203   last = node;
6204   tmp_node = node->parent;
6205   tmp_tree = tree;
6206   while (tmp_tree)
6207     {
6208       while (tmp_node != tmp_tree->nil)
6209         {
6210           if (tmp_node->right == last)
6211             count += 1 + tmp_node->left->count;
6212           last = tmp_node;
6213           tmp_node = tmp_node->parent;
6214         }
6215       gtk_tree_path_prepend_index (path, count - 1);
6216       last = tmp_tree->parent_node;
6217       tmp_tree = tmp_tree->parent_tree;
6218       if (last)
6219         {
6220           count = 1 + last->left->count;
6221           tmp_node = last->parent;
6222         }
6223     }
6224   return path;
6225 }
6226
6227 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
6228  * invalid (ie. points to a node that's not in the tree), *tree and *node are
6229  * both set to NULL.
6230  */
6231 gboolean
6232 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
6233                           GtkTreePath  *path,
6234                           GtkRBTree   **tree,
6235                           GtkRBNode   **node)
6236 {
6237   GtkRBNode *tmpnode = NULL;
6238   GtkRBTree *tmptree = tree_view->priv->tree;
6239   gint *indices = gtk_tree_path_get_indices (path);
6240   gint depth = gtk_tree_path_get_depth (path);
6241   gint i = 0;
6242
6243   *node = NULL;
6244   *tree = NULL;
6245
6246   if (depth == 0 || tmptree == NULL)
6247     return FALSE;
6248   do
6249     {
6250       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
6251       ++i;
6252       if (tmpnode == NULL)
6253         {
6254           *tree = NULL;
6255           *node = NULL;
6256           return FALSE;
6257         }
6258       if (i >= depth)
6259         {
6260           *tree = tmptree;
6261           *node = tmpnode;
6262           return FALSE;
6263         }
6264       *tree = tmptree;
6265       *node = tmpnode;
6266       tmptree = tmpnode->children;
6267       if (tmptree == NULL)
6268         return TRUE;
6269     }
6270   while (1);
6271 }
6272
6273 static gboolean
6274 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
6275                                   GtkTreeViewColumn *column)
6276 {
6277   GList *list;
6278
6279   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
6280     return FALSE;
6281
6282   if (tree_view->priv->expander_column != NULL)
6283     {
6284       if (tree_view->priv->expander_column == column)
6285         return TRUE;
6286       return FALSE;
6287     }
6288   else
6289     {
6290       for (list = tree_view->priv->columns; list; list = list->next)
6291         if (((GtkTreeViewColumn *)list->data)->visible)
6292           break;
6293       if (list && list->data == column)
6294         return TRUE;
6295     }
6296   return FALSE;
6297 }
6298
6299 static void
6300 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
6301                                 guint           keyval,
6302                                 guint           modmask,
6303                                 GtkMovementStep step,
6304                                 gint            count)
6305 {
6306
6307   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
6308                                 "move_cursor", 2,
6309                                 GTK_TYPE_ENUM, step,
6310                                 GTK_TYPE_INT, count);
6311
6312   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
6313                                 "move_cursor", 2,
6314                                 GTK_TYPE_ENUM, step,
6315                                 GTK_TYPE_INT, count);
6316
6317   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
6318    return;
6319
6320   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
6321                                 "move_cursor", 2,
6322                                 GTK_TYPE_ENUM, step,
6323                                 GTK_TYPE_INT, count);
6324
6325   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
6326                                 "move_cursor", 2,
6327                                 GTK_TYPE_ENUM, step,
6328                                 GTK_TYPE_INT, count);
6329 }
6330
6331 static gint
6332 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
6333                                  GtkTreeIter  *iter,
6334                                  GtkRBTree    *tree,
6335                                  GtkRBNode    *node)
6336 {
6337   gint retval = FALSE;
6338   do
6339     {
6340       g_return_val_if_fail (node != NULL, FALSE);
6341
6342       if (node->children)
6343         {
6344           GtkTreeIter child;
6345           GtkRBTree *new_tree;
6346           GtkRBNode *new_node;
6347
6348           new_tree = node->children;
6349           new_node = new_tree->root;
6350
6351           while (new_node && new_node->left != new_tree->nil)
6352             new_node = new_node->left;
6353
6354           g_return_val_if_fail (gtk_tree_model_iter_children (model, &child, iter), FALSE);
6355           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
6356         }
6357
6358       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
6359         retval = TRUE;
6360       gtk_tree_model_unref_node (model, iter);
6361       node = _gtk_rbtree_next (tree, node);
6362     }
6363   while (gtk_tree_model_iter_next (model, iter));
6364
6365   return retval;
6366 }
6367
6368 static gint
6369 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
6370                                               GtkRBTree   *tree)
6371 {
6372   GtkTreeIter iter;
6373   GtkTreePath *path;
6374   GtkRBNode *node;
6375   gint retval;
6376
6377   if (!tree)
6378     return FALSE;
6379
6380   node = tree->root;
6381   while (node && node->left != tree->nil)
6382     node = node->left;
6383
6384   g_return_val_if_fail (node != NULL, FALSE);
6385   path = _gtk_tree_view_find_path (tree_view, tree, node);
6386   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
6387                            &iter, path);
6388   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
6389   gtk_tree_path_free (path);
6390
6391   return retval;
6392 }
6393
6394 static void
6395 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
6396                                     GtkTreeViewColumn *column)
6397 {
6398   GtkTreeViewColumn *left_column;
6399   GtkTreeViewColumn *cur_column = NULL;
6400   GtkTreeViewColumnReorder *reorder;
6401
6402   GList *tmp_list;
6403   gint left;
6404
6405   /* We want to precalculate the motion list such that we know what column slots
6406    * are available.
6407    */
6408   left_column = NULL;
6409
6410   /* First, identify all possible drop spots */
6411   tmp_list = tree_view->priv->columns;
6412
6413   while (tmp_list)
6414     {
6415       g_assert (tmp_list);
6416
6417       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
6418       tmp_list = tmp_list->next;
6419
6420       if (cur_column->visible == FALSE)
6421         continue;
6422
6423       /* If it's not the column moving and func tells us to skip over the column, we continue. */
6424       if (left_column != column && cur_column != column &&
6425           tree_view->priv->column_drop_func &&
6426           ! (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
6427         {
6428           left_column = cur_column;
6429           continue;
6430         }
6431       reorder = g_new (GtkTreeViewColumnReorder, 1);
6432       reorder->left_column = left_column;
6433       left_column = reorder->right_column = cur_column;
6434
6435       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
6436     }
6437
6438   /* Add the last one */
6439   if (tree_view->priv->column_drop_func == NULL ||
6440       ((left_column != column) &&
6441        (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data)))
6442     {
6443       reorder = g_new (GtkTreeViewColumnReorder, 1);
6444       reorder->left_column = left_column;
6445       reorder->right_column = NULL;
6446       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
6447     }
6448
6449   /* We quickly check to see if it even makes sense to reorder columns. */
6450   /* If there is nothing that can be moved, then we return */
6451
6452   if (tree_view->priv->column_drag_info == NULL)
6453     return;
6454
6455   /* We know there are always 2 slots possbile, as you can always return column. */
6456   /* If that's all there is, return */
6457   if (tree_view->priv->column_drag_info->next->next == NULL &&
6458       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
6459       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column)
6460     {
6461       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
6462         g_free (tmp_list->data);
6463       g_list_free (tree_view->priv->column_drag_info);
6464       tree_view->priv->column_drag_info = NULL;
6465       return;
6466     }
6467   /* We fill in the ranges for the columns, now that we've isolated them */
6468   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
6469
6470   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
6471     {
6472       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
6473
6474       reorder->left_align = left;
6475       if (tmp_list->next != NULL)
6476         {
6477           g_assert (tmp_list->next->data);
6478           left = reorder->right_align = (reorder->right_column->button->allocation.x +
6479                                          reorder->right_column->button->allocation.width +
6480                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
6481         }
6482       else
6483         {
6484           gint width;
6485
6486           gdk_window_get_size (tree_view->priv->header_window, &width, NULL);
6487           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
6488         }
6489     }
6490 }
6491
6492 void
6493 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
6494                                   GtkTreeViewColumn *column)
6495 {
6496   GdkEvent send_event;
6497   GtkAllocation allocation;
6498   gint x, y, width, height;
6499
6500   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
6501
6502   gtk_tree_view_set_column_drag_info (tree_view, column);
6503
6504   if (tree_view->priv->column_drag_info == NULL)
6505     return;
6506
6507   if (tree_view->priv->drag_window == NULL)
6508     {
6509       GdkWindowAttr attributes;
6510       guint attributes_mask;
6511
6512       attributes.window_type = GDK_WINDOW_CHILD;
6513       attributes.wclass = GDK_INPUT_OUTPUT;
6514       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
6515       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
6516       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
6517       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
6518
6519       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
6520                                                      &attributes,
6521                                                      attributes_mask);
6522       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
6523     }
6524
6525   gdk_pointer_ungrab (GDK_CURRENT_TIME);
6526   gdk_keyboard_ungrab (GDK_CURRENT_TIME);
6527
6528   gtk_grab_remove (column->button);
6529
6530   send_event.crossing.type = GDK_LEAVE_NOTIFY;
6531   send_event.crossing.send_event = TRUE;
6532   send_event.crossing.window = column->button->window;
6533   send_event.crossing.subwindow = NULL;
6534   send_event.crossing.detail = GDK_NOTIFY_ANCESTOR;
6535   send_event.crossing.time = GDK_CURRENT_TIME;
6536
6537   gtk_propagate_event (column->button, &send_event);
6538
6539   send_event.button.type = GDK_BUTTON_RELEASE;
6540   send_event.button.window = GDK_ROOT_PARENT ();
6541   send_event.button.send_event = TRUE;
6542   send_event.button.time = GDK_CURRENT_TIME;
6543   send_event.button.x = -1;
6544   send_event.button.y = -1;
6545   send_event.button.axes = NULL;
6546   send_event.button.state = 0;
6547   send_event.button.button = 1;
6548   send_event.button.device = gdk_device_get_core_pointer ();
6549   send_event.button.x_root = 0;
6550   send_event.button.y_root = 0;
6551
6552   gtk_propagate_event (column->button, &send_event);
6553
6554   gdk_window_move_resize (tree_view->priv->drag_window,
6555                           column->button->allocation.x,
6556                           0,
6557                           column->button->allocation.width,
6558                           column->button->allocation.height);
6559
6560   /* Kids, don't try this at home */
6561   g_object_ref (column->button);
6562   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
6563   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
6564   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
6565   g_object_unref (column->button);
6566
6567   tree_view->priv->drag_column_x = column->button->allocation.x;
6568   allocation = column->button->allocation;
6569   allocation.x = 0;
6570   gtk_widget_size_allocate (column->button, &allocation);
6571   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
6572
6573   tree_view->priv->drag_column = column;
6574   gdk_window_show (tree_view->priv->drag_window);
6575
6576   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
6577   gdk_window_get_size (tree_view->priv->header_window, &width, &height);
6578
6579   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6580   while (gtk_events_pending ())
6581     gtk_main_iteration ();
6582
6583   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
6584   gdk_pointer_grab (tree_view->priv->drag_window,
6585                     FALSE,
6586                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
6587                     NULL, NULL, GDK_CURRENT_TIME);
6588   gdk_keyboard_grab (tree_view->priv->drag_window,
6589                      FALSE,
6590                      GDK_CURRENT_TIME);
6591
6592 }
6593
6594 static void
6595 gtk_tree_view_queue_draw_arrow (GtkTreeView      *tree_view,
6596                                 GtkRBTree        *tree,
6597                                 GtkRBNode        *node,
6598                                 GdkRectangle     *clip_rect)
6599 {
6600   GdkRectangle rect;
6601
6602   if (!GTK_WIDGET_REALIZED (tree_view))
6603     return;
6604
6605   rect.x = 0;
6606   rect.width = MAX (tree_view->priv->expander_size, GTK_WIDGET (tree_view)->allocation.width);
6607
6608   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
6609   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
6610
6611   if (clip_rect)
6612     {
6613       GdkRectangle new_rect;
6614
6615       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
6616
6617       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
6618     }
6619   else
6620     {
6621       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
6622     }
6623 }
6624
6625 void
6626 _gtk_tree_view_queue_draw_node (GtkTreeView  *tree_view,
6627                                 GtkRBTree    *tree,
6628                                 GtkRBNode    *node,
6629                                 GdkRectangle *clip_rect)
6630 {
6631   GdkRectangle rect;
6632
6633   if (!GTK_WIDGET_REALIZED (tree_view))
6634     return;
6635
6636   rect.x = 0;
6637   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
6638
6639   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
6640   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
6641
6642   if (clip_rect)
6643     {
6644       GdkRectangle new_rect;
6645
6646       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
6647
6648       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
6649     }
6650   else
6651     {
6652       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
6653     }
6654 }
6655
6656 static void
6657 gtk_tree_view_queue_draw_path (GtkTreeView      *tree_view,
6658                                GtkTreePath      *path,
6659                                GdkRectangle     *clip_rect)
6660 {
6661   GtkRBTree *tree = NULL;
6662   GtkRBNode *node = NULL;
6663
6664   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6665
6666   if (tree)
6667     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
6668 }
6669
6670 /* x and y are the mouse position
6671  */
6672 static void
6673 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
6674                           GtkRBTree   *tree,
6675                           GtkRBNode   *node,
6676                           gint         x,
6677                           gint         y)
6678 {
6679   GdkRectangle area;
6680   GtkStateType state;
6681   GtkWidget *widget;
6682   gint x_offset = 0;
6683   gint vertical_separator;
6684   gint expander_size;
6685   GtkExpanderStyle expander_style;
6686
6687   gtk_widget_style_get (GTK_WIDGET (tree_view),
6688                         "vertical_separator", &vertical_separator,
6689                         NULL);
6690   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
6691
6692   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
6693     return;
6694
6695   widget = GTK_WIDGET (tree_view);
6696
6697   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, NULL);
6698
6699   area.x = x_offset;
6700   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
6701   area.width = expander_size + 2;
6702   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
6703
6704   if (node == tree_view->priv->button_pressed_node)
6705     {
6706       if (x >= area.x && x <= (area.x + area.width) &&
6707           y >= area.y && y <= (area.y + area.height))
6708         state = GTK_STATE_ACTIVE;
6709       else
6710         state = GTK_STATE_NORMAL;
6711     }
6712   else
6713     {
6714       if (node == tree_view->priv->prelight_node &&
6715           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
6716         state = GTK_STATE_PRELIGHT;
6717       else
6718         state = GTK_STATE_NORMAL;
6719     }
6720
6721   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
6722     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
6723   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
6724     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
6725   else if (node->children != NULL)
6726     expander_style = GTK_EXPANDER_EXPANDED;
6727   else
6728     expander_style = GTK_EXPANDER_COLLAPSED;
6729
6730   gtk_paint_expander (widget->style,
6731                       tree_view->priv->bin_window,
6732                       state,
6733                       &area,
6734                       widget,
6735                       "treeview",
6736                       area.x + area.width / 2,
6737                       area.y + area.height / 2,
6738                       expander_style);
6739 }
6740
6741 static void
6742 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
6743
6744 {
6745   GtkTreePath *cursor_path;
6746
6747   if ((tree_view->priv->tree == NULL) ||
6748       (! GTK_WIDGET_REALIZED (tree_view)))
6749     return;
6750
6751   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
6752   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6753
6754   cursor_path = NULL;
6755   if (tree_view->priv->cursor)
6756     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6757
6758   if (cursor_path == NULL)
6759     {
6760       cursor_path = gtk_tree_path_new_first ();
6761       gtk_tree_row_reference_free (tree_view->priv->cursor);
6762       tree_view->priv->cursor = NULL;
6763
6764       if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
6765         gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE);
6766       else
6767         gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
6768     }
6769   gtk_tree_path_free (cursor_path);
6770   if (tree_view->priv->focus_column == NULL)
6771     {
6772       GList *list;
6773       for (list = tree_view->priv->columns; list; list = list->next)
6774         {
6775           if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
6776             {
6777               tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
6778               break;
6779             }
6780         }
6781     }
6782 }
6783
6784 static void
6785 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
6786                                    gint         count)
6787 {
6788   GtkRBTree *cursor_tree = NULL;
6789   GtkRBNode *cursor_node = NULL;
6790   GtkRBTree *new_cursor_tree = NULL;
6791   GtkRBNode *new_cursor_node = NULL;
6792   GtkTreePath *cursor_path = NULL;
6793
6794   cursor_path = NULL;
6795   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
6796     /* FIXME: we lost the cursor; should we get the first? */
6797     return;
6798
6799   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6800   _gtk_tree_view_find_node (tree_view, cursor_path,
6801                             &cursor_tree, &cursor_node);
6802   gtk_tree_path_free (cursor_path);
6803
6804   if (cursor_tree == NULL)
6805     /* FIXME: we lost the cursor; should we get the first? */
6806     return;
6807   if (count == -1)
6808     _gtk_rbtree_prev_full (cursor_tree, cursor_node,
6809                            &new_cursor_tree, &new_cursor_node);
6810   else
6811     _gtk_rbtree_next_full (cursor_tree, cursor_node,
6812                            &new_cursor_tree, &new_cursor_node);
6813
6814   if (new_cursor_node)
6815     {
6816       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
6817       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
6818       gtk_tree_path_free (cursor_path);
6819     }
6820   else
6821     {
6822       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6823     }
6824
6825   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6826 }
6827
6828 static void
6829 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
6830                                         gint         count)
6831 {
6832   GtkRBTree *cursor_tree = NULL;
6833   GtkRBNode *cursor_node = NULL;
6834   GtkTreePath *cursor_path = NULL;
6835   gint y;
6836   gint vertical_separator;
6837
6838   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
6839     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6840   else
6841     /* This is sorta weird.  Focus in should give us a cursor */
6842     return;
6843
6844   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
6845   _gtk_tree_view_find_node (tree_view, cursor_path,
6846                             &cursor_tree, &cursor_node);
6847
6848   gtk_tree_path_free (cursor_path);
6849
6850   if (cursor_tree == NULL)
6851     /* FIXME: we lost the cursor.  Should we try to get one? */
6852     return;
6853   g_return_if_fail (cursor_node != NULL);
6854
6855   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
6856   y += count * tree_view->priv->vadjustment->page_size;
6857   if (count > 0)
6858     y -= MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
6859               tree_view->priv->expander_size);
6860   else if (count < 0)
6861     y += MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
6862               tree_view->priv->expander_size);
6863   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
6864
6865   _gtk_rbtree_find_offset (tree_view->priv->tree, y, &cursor_tree, &cursor_node);
6866   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
6867   g_return_if_fail (cursor_path != NULL);
6868   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
6869   gtk_tree_view_scroll_to_point (tree_view, -1, y);
6870   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6871   gtk_tree_path_free (cursor_path);
6872 }
6873
6874 static void
6875 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
6876                                       gint         count)
6877 {
6878   GtkRBTree *cursor_tree = NULL;
6879   GtkRBNode *cursor_node = NULL;
6880   GtkTreePath *cursor_path = NULL;
6881   GtkTreeViewColumn *column;
6882   GtkTreeIter iter;
6883   GList *list;
6884   gboolean found_column = FALSE;
6885
6886   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
6887     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6888   else
6889     return;
6890
6891   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
6892   if (cursor_tree == NULL)
6893     return;
6894   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
6895     {
6896       gtk_tree_path_free (cursor_path);
6897       return;
6898     }
6899   gtk_tree_path_free (cursor_path);
6900
6901   list = tree_view->priv->columns;
6902   if (tree_view->priv->focus_column)
6903     {
6904       for (list = tree_view->priv->columns; list; list = list->next)
6905         {
6906           if (list->data == tree_view->priv->focus_column)
6907             break;
6908         }
6909     }
6910
6911   while (list)
6912     {
6913       column = list->data;
6914       if (column->visible == FALSE)
6915         goto loop_end;
6916
6917       gtk_tree_view_column_cell_set_cell_data (column,
6918                                                tree_view->priv->model,
6919                                                &iter,
6920                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
6921                                                cursor_node->children?TRUE:FALSE);
6922       if (_gtk_tree_view_column_cell_focus (column, count))
6923         {
6924           tree_view->priv->focus_column = column;
6925           found_column = TRUE;
6926           break;
6927         }
6928     loop_end:
6929       if (count == 1)
6930         list = list->next;
6931       else
6932         list = list->prev;
6933     }
6934
6935   if (found_column)
6936     {
6937       _gtk_tree_view_queue_draw_node (tree_view,
6938                                      cursor_tree,
6939                                      cursor_node,
6940                                      NULL);
6941       g_signal_emit (G_OBJECT (tree_view), tree_view_signals[CURSOR_CHANGED], 0);
6942     }
6943   gtk_tree_view_clamp_column_visible (tree_view, tree_view->priv->focus_column);
6944 }
6945
6946 static void
6947 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
6948                                      gint         count)
6949 {
6950   GtkRBTree *cursor_tree;
6951   GtkRBNode *cursor_node;
6952   GtkTreePath *path;
6953
6954   g_return_if_fail (tree_view->priv->tree != NULL);
6955
6956   if (count == -1)
6957     {
6958       cursor_tree = tree_view->priv->tree;
6959       cursor_node = cursor_tree->root;
6960       while (cursor_node && cursor_node->left != cursor_tree->nil)
6961         cursor_node = cursor_node->left;
6962     }
6963   else
6964     {
6965       cursor_tree = tree_view->priv->tree;
6966       cursor_node = cursor_tree->root;
6967       do
6968         {
6969           while (cursor_node && cursor_node->right != cursor_tree->nil)
6970             cursor_node = cursor_node->right;
6971           if (cursor_node->children == NULL)
6972             break;
6973
6974           cursor_tree = cursor_node->children;
6975           cursor_node = cursor_tree->root;
6976         }
6977       while (1);
6978     }
6979
6980   path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
6981   gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
6982   gtk_tree_path_free (path);
6983 }
6984
6985 static void
6986 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
6987 {
6988   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
6989     return;
6990   gtk_tree_selection_select_all (tree_view->priv->selection);
6991 }
6992
6993 static void
6994 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
6995 {
6996   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
6997     return;
6998   gtk_tree_selection_unselect_all (tree_view->priv->selection);
6999 }
7000
7001 static void
7002 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
7003                                       gboolean     start_editing)
7004 {
7005   GtkRBTree *cursor_tree = NULL;
7006   GtkRBNode *cursor_node = NULL;
7007   GtkTreePath *cursor_path = NULL;
7008   GdkModifierType state = 0;
7009   cursor_path = NULL;
7010
7011   if (tree_view->priv->cursor)
7012     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7013
7014   if (cursor_path == NULL)
7015     return;
7016
7017   _gtk_tree_view_find_node (tree_view, cursor_path,
7018                             &cursor_tree, &cursor_node);
7019
7020   if (cursor_tree == NULL)
7021     {
7022       gtk_tree_path_free (cursor_path);
7023       return;
7024     }
7025
7026   gtk_get_current_event_state (&state);
7027
7028   if (! (state & GDK_SHIFT_MASK) &&
7029       start_editing &&
7030       tree_view->priv->focus_column)
7031     {
7032       if (gtk_tree_view_start_editing (tree_view, cursor_path))
7033         {
7034           gtk_tree_path_free (cursor_path);
7035           return;
7036         }
7037     }
7038   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7039                                             cursor_node,
7040                                             cursor_tree,
7041                                             cursor_path,
7042                                             state);
7043
7044   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7045
7046   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7047   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
7048
7049   if (! (state & GDK_SHIFT_MASK))
7050     gtk_tree_view_row_activated (tree_view, cursor_path, tree_view->priv->focus_column);
7051
7052   gtk_tree_path_free (cursor_path);
7053 }
7054
7055 static void
7056 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
7057 {
7058   GtkRBTree *cursor_tree = NULL;
7059   GtkRBNode *cursor_node = NULL;
7060   GtkTreePath *cursor_path = NULL;
7061
7062   cursor_path = NULL;
7063   if (tree_view->priv->cursor)
7064     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7065
7066   if (cursor_path == NULL)
7067     return;
7068
7069   _gtk_tree_view_find_node (tree_view, cursor_path,
7070                             &cursor_tree, &cursor_node);
7071   if (cursor_tree == NULL)
7072     {
7073       gtk_tree_path_free (cursor_path);
7074       return;
7075     }
7076
7077   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7078                                             cursor_node,
7079                                             cursor_tree,
7080                                             cursor_path,
7081                                             GDK_CONTROL_MASK);
7082
7083   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7084
7085   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7086   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7087   gtk_tree_path_free (cursor_path);
7088 }
7089
7090
7091
7092 static void
7093 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
7094                                                gboolean     logical,
7095                                                gboolean     expand,
7096                                                gboolean     open_all)
7097 {
7098   GtkTreePath *cursor_path = NULL;
7099   GtkRBTree *tree;
7100   GtkRBNode *node;
7101
7102   cursor_path = NULL;
7103   if (tree_view->priv->cursor)
7104     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7105
7106   if (cursor_path == NULL)
7107     return;
7108
7109   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
7110     return;
7111
7112   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7113   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7114
7115   if (expand)
7116     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
7117   else
7118     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
7119
7120   gtk_tree_path_free (cursor_path);
7121 }
7122
7123 static void
7124 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
7125 {
7126   GtkRBTree *cursor_tree = NULL;
7127   GtkRBNode *cursor_node = NULL;
7128   GtkTreePath *cursor_path = NULL;
7129
7130   cursor_path = NULL;
7131   if (tree_view->priv->cursor)
7132     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7133
7134   if (cursor_path == NULL)
7135     return;
7136
7137   _gtk_tree_view_find_node (tree_view, cursor_path,
7138                             &cursor_tree, &cursor_node);
7139   if (cursor_tree == NULL)
7140     {
7141       gtk_tree_path_free (cursor_path);
7142       return;
7143     }
7144
7145   if (cursor_tree->parent_node)
7146     {
7147       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7148       cursor_node = cursor_tree->parent_node;
7149       cursor_tree = cursor_tree->parent_tree;
7150
7151       gtk_tree_path_up (cursor_path);
7152       gtk_tree_row_reference_free (tree_view->priv->cursor);
7153       tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, cursor_path);
7154       _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7155                                                 cursor_node,
7156                                                 cursor_tree,
7157                                                 cursor_path,
7158                                                 0);
7159     }
7160
7161   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7162
7163   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7164   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7165   gtk_tree_path_free (cursor_path);
7166 }
7167
7168 static void
7169 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view)
7170 {
7171   GtkWidget *window;
7172   GtkWidget *entry;
7173   GtkWidget *search_dialog;
7174   GdkEventFocus focus_event;
7175
7176   if (tree_view->priv->enable_search == FALSE ||
7177       tree_view->priv->search_column < 0)
7178     return;
7179
7180   search_dialog = g_object_get_data (G_OBJECT (tree_view),
7181                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
7182   if (search_dialog)
7183     return;
7184
7185   /* set up window */
7186   window = gtk_window_new (GTK_WINDOW_POPUP);
7187   gtk_window_set_title (GTK_WINDOW (window), "search dialog");
7188   gtk_container_set_border_width (GTK_CONTAINER (window), 3);
7189   gtk_window_set_modal (GTK_WINDOW (window), TRUE);
7190   g_signal_connect (G_OBJECT (window), "delete_event",
7191                     G_CALLBACK (gtk_tree_view_search_delete_event),
7192                     tree_view);
7193   g_signal_connect (G_OBJECT (window), "key_press_event",
7194                     G_CALLBACK (gtk_tree_view_search_key_press_event),
7195                     tree_view);
7196   g_signal_connect (G_OBJECT (window), "button_press_event",
7197                     G_CALLBACK (gtk_tree_view_search_button_press_event),
7198                     tree_view);
7199
7200   /* add entry */
7201   entry = gtk_entry_new ();
7202   gtk_widget_show (entry);
7203   g_signal_connect (G_OBJECT (entry), "changed",
7204                     G_CALLBACK (gtk_tree_view_search_init), tree_view);
7205   g_signal_connect (G_OBJECT (entry), "populate_popup",
7206                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
7207                     tree_view);
7208   gtk_container_add (GTK_CONTAINER (window), entry);
7209
7210   /* done, show it */
7211   tree_view->priv->search_dialog_position_func (tree_view, window);
7212   gtk_widget_show_all (window);
7213   gtk_widget_grab_focus (entry);
7214
7215   /* send focus-in event */
7216   focus_event.type = GDK_FOCUS_CHANGE;
7217   focus_event.in = TRUE;
7218   gtk_widget_event (entry, (GdkEvent *) &focus_event);
7219
7220   /* position window */
7221
7222   /* yes, we point to the entry's private text thing here, a bit evil */
7223   g_object_set_data (G_OBJECT (window), "gtk-tree-view-text",
7224                      (gchar *) gtk_entry_get_text (GTK_ENTRY (entry)));
7225   g_object_set_data (G_OBJECT (tree_view),
7226                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY, window);
7227
7228   /* search first matching iter */
7229   gtk_tree_view_search_init (entry, tree_view);
7230 }
7231
7232 static void
7233 gtk_tree_view_real_focus_column_header (GtkTreeView *tree_view)
7234 {
7235   if (!tree_view->priv->focus_column)
7236     return;
7237
7238   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
7239 }
7240
7241 /* this function returns the new width of the column being resized given
7242  * the column and x position of the cursor; the x cursor position is passed
7243  * in as a pointer and automagicly corrected if it's beyond min/max limits
7244  */
7245 static gint
7246 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
7247                                 gint       i,
7248                                 gint      *x)
7249 {
7250   GtkTreeViewColumn *column;
7251   gint width;
7252
7253   /* first translate the x position from widget->window
7254    * to clist->clist_window
7255    */
7256
7257   column = g_list_nth (tree_view->priv->columns, i)->data;
7258   width = *x - column->button->allocation.x;
7259
7260   /* Clamp down the value */
7261   if (column->min_width == -1)
7262     width = MAX (column->button->requisition.width,
7263                  width);
7264   else
7265     width = MAX (column->min_width,
7266                  width);
7267   if (column->max_width != -1)
7268     width = MIN (width, column->max_width != -1);
7269   *x = column->button->allocation.x + width;
7270
7271   return width;
7272 }
7273
7274
7275 /* Callbacks */
7276 static void
7277 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
7278                                   GtkTreeView   *tree_view)
7279 {
7280   if (GTK_WIDGET_REALIZED (tree_view))
7281     {
7282       gint dy;
7283
7284       gdk_window_move (tree_view->priv->bin_window,
7285                        - tree_view->priv->hadjustment->value,
7286                        TREE_VIEW_HEADER_HEIGHT (tree_view));
7287       gdk_window_move (tree_view->priv->header_window,
7288                        - tree_view->priv->hadjustment->value,
7289                        0);
7290       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
7291       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
7292
7293       /* update our dy and top_row */
7294       tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
7295       gtk_tree_view_dy_to_top_row (tree_view);
7296       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
7297       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
7298     }
7299 }
7300
7301 \f
7302
7303 /* Public methods
7304  */
7305
7306 /**
7307  * gtk_tree_view_new:
7308  *
7309  * Creates a new #GtkTreeView widget.
7310  *
7311  * Return value: A newly created #GtkTreeView widget.
7312  **/
7313 GtkWidget *
7314 gtk_tree_view_new (void)
7315 {
7316   GtkTreeView *tree_view;
7317
7318   tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
7319
7320   return GTK_WIDGET (tree_view);
7321 }
7322
7323 /**
7324  * gtk_tree_view_new_with_model:
7325  * @model: the model.
7326  *
7327  * Creates a new #GtkTreeView widget with the model initialized to @model.
7328  *
7329  * Return value: A newly created #GtkTreeView widget.
7330  **/
7331 GtkWidget *
7332 gtk_tree_view_new_with_model (GtkTreeModel *model)
7333 {
7334   GtkTreeView *tree_view;
7335
7336   tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
7337   gtk_tree_view_set_model (tree_view, model);
7338
7339   return GTK_WIDGET (tree_view);
7340 }
7341
7342 /* Public Accessors
7343  */
7344
7345 /**
7346  * gtk_tree_view_get_model:
7347  * @tree_view: a #GtkTreeView
7348  *
7349  * Returns the model the the #GtkTreeView is based on.  Returns %NULL if the
7350  * model is unset.
7351  *
7352  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
7353  **/
7354 GtkTreeModel *
7355 gtk_tree_view_get_model (GtkTreeView *tree_view)
7356 {
7357   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7358
7359   return tree_view->priv->model;
7360 }
7361
7362 /**
7363  * gtk_tree_view_set_model:
7364  * @tree_view: A #GtkTreeNode.
7365  * @model: The model.
7366  *
7367  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
7368  * set, it will remove it before setting the new model.  If @model is %NULL, then
7369  * it will unset the old model.
7370  **/
7371 void
7372 gtk_tree_view_set_model (GtkTreeView  *tree_view,
7373                          GtkTreeModel *model)
7374 {
7375   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7376
7377   if (model == tree_view->priv->model)
7378     return;
7379
7380   if (tree_view->priv->model)
7381     {
7382       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
7383
7384       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7385                                             gtk_tree_view_row_changed, tree_view);
7386       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7387                                             gtk_tree_view_row_inserted, tree_view);
7388       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7389                                             gtk_tree_view_row_has_child_toggled, tree_view);
7390       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7391                                             gtk_tree_view_row_deleted, tree_view);
7392       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7393                                             gtk_tree_view_rows_reordered, tree_view);
7394       if (tree_view->priv->tree)
7395         {
7396           _gtk_rbtree_free (tree_view->priv->tree);
7397           tree_view->priv->tree = NULL;
7398         }
7399
7400       tree_view->priv->prelight_node = NULL;
7401       tree_view->priv->prelight_tree = NULL;
7402       tree_view->priv->button_pressed_node = NULL;
7403       tree_view->priv->button_pressed_tree = NULL;
7404
7405       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
7406       tree_view->priv->drag_dest_row = NULL;
7407       gtk_tree_row_reference_free (tree_view->priv->cursor);
7408       tree_view->priv->cursor = NULL;
7409       gtk_tree_row_reference_free (tree_view->priv->anchor);
7410       tree_view->priv->anchor = NULL;
7411
7412       g_object_unref (tree_view->priv->model);
7413       tree_view->priv->search_column = -1;
7414       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
7415     }
7416
7417   tree_view->priv->model = model;
7418
7419
7420   if (tree_view->priv->model)
7421     {
7422       gint i;
7423       GtkTreePath *path;
7424       GtkTreeIter iter;
7425
7426
7427       if (tree_view->priv->search_column == -1)
7428         {
7429           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
7430             {
7431               if (gtk_tree_model_get_column_type (model, i) == G_TYPE_STRING)
7432                 {
7433                   tree_view->priv->search_column = i;
7434                   break;
7435                 }
7436             }
7437         }
7438       g_object_ref (tree_view->priv->model);
7439       g_signal_connect (tree_view->priv->model,
7440                         "row_changed",
7441                         G_CALLBACK (gtk_tree_view_row_changed),
7442                         tree_view);
7443       g_signal_connect (tree_view->priv->model,
7444                         "row_inserted",
7445                         G_CALLBACK (gtk_tree_view_row_inserted),
7446                         tree_view);
7447       g_signal_connect (tree_view->priv->model,
7448                         "row_has_child_toggled",
7449                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
7450                         tree_view);
7451       g_signal_connect (tree_view->priv->model,
7452                         "row_deleted",
7453                         G_CALLBACK (gtk_tree_view_row_deleted),
7454                         tree_view);
7455       g_signal_connect (tree_view->priv->model,
7456                         "rows_reordered",
7457                         G_CALLBACK (gtk_tree_view_rows_reordered),
7458                         tree_view);
7459
7460       path = gtk_tree_path_new_first ();
7461       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
7462         {
7463           tree_view->priv->tree = _gtk_rbtree_new ();
7464           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
7465         }
7466       gtk_tree_path_free (path);
7467
7468       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
7469       install_presize_handler (tree_view);
7470     }
7471
7472   g_object_notify (G_OBJECT (tree_view), "model");
7473
7474   if (GTK_WIDGET_REALIZED (tree_view))
7475     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7476 }
7477
7478 /**
7479  * gtk_tree_view_get_selection:
7480  * @tree_view: A #GtkTreeView.
7481  *
7482  * Gets the #GtkTreeSelection associated with @tree_view.
7483  *
7484  * Return value: A #GtkTreeSelection object.
7485  **/
7486 GtkTreeSelection *
7487 gtk_tree_view_get_selection (GtkTreeView *tree_view)
7488 {
7489   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7490
7491   return tree_view->priv->selection;
7492 }
7493
7494 /**
7495  * gtk_tree_view_get_hadjustment:
7496  * @tree_view: A #GtkTreeView
7497  *
7498  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
7499  *
7500  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
7501  * used.
7502  **/
7503 GtkAdjustment *
7504 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
7505 {
7506   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7507
7508   if (tree_view->priv->hadjustment == NULL)
7509     gtk_tree_view_set_hadjustment (tree_view, NULL);
7510
7511   return tree_view->priv->hadjustment;
7512 }
7513
7514 /**
7515  * gtk_tree_view_set_hadjustment:
7516  * @tree_view: A #GtkTreeView
7517  * @adjustment: The #GtkAdjustment to set, or %NULL
7518  *
7519  * Sets the #GtkAdjustment for the current horizontal aspect.
7520  **/
7521 void
7522 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
7523                                GtkAdjustment *adjustment)
7524 {
7525   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7526
7527   gtk_tree_view_set_adjustments (tree_view,
7528                                  adjustment,
7529                                  tree_view->priv->vadjustment);
7530
7531   g_object_notify (G_OBJECT (tree_view), "hadjustment");
7532 }
7533
7534 /**
7535  * gtk_tree_view_get_vadjustment:
7536  * @tree_view: A #GtkTreeView
7537  *
7538  * Gets the #GtkAdjustment currently being used for the vertical aspect.
7539  *
7540  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
7541  * used.
7542  **/
7543 GtkAdjustment *
7544 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
7545 {
7546   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7547
7548   if (tree_view->priv->vadjustment == NULL)
7549     gtk_tree_view_set_vadjustment (tree_view, NULL);
7550
7551   return tree_view->priv->vadjustment;
7552 }
7553
7554 /**
7555  * gtk_tree_view_set_vadjustment:
7556  * @tree_view: A #GtkTreeView
7557  * @adjustment: The #GtkAdjustment to set, or %NULL
7558  *
7559  * Sets the #GtkAdjustment for the current vertical aspect.
7560  **/
7561 void
7562 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
7563                                GtkAdjustment *adjustment)
7564 {
7565   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7566
7567   gtk_tree_view_set_adjustments (tree_view,
7568                                  tree_view->priv->hadjustment,
7569                                  adjustment);
7570
7571   g_object_notify (G_OBJECT (tree_view), "vadjustment");
7572 }
7573
7574 /* Column and header operations */
7575
7576 /**
7577  * gtk_tree_view_get_headers_visible:
7578  * @tree_view: A #GtkTreeView.
7579  *
7580  * Returns %TRUE if the headers on the @tree_view are visible.
7581  *
7582  * Return value: Whether the headers are visible or not.
7583  **/
7584 gboolean
7585 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
7586 {
7587   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7588
7589   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
7590 }
7591
7592 /**
7593  * gtk_tree_view_set_headers_visible:
7594  * @tree_view: A #GtkTreeView.
7595  * @headers_visible: %TRUE if the headers are visible
7596  *
7597  * Sets the the visibility state of the headers.
7598  **/
7599 void
7600 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
7601                                    gboolean     headers_visible)
7602 {
7603   gint x, y;
7604   GList *list;
7605   GtkTreeViewColumn *column;
7606
7607   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7608
7609   headers_visible = !! headers_visible;
7610
7611   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
7612     return;
7613
7614   if (headers_visible)
7615     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
7616   else
7617     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
7618
7619   if (GTK_WIDGET_REALIZED (tree_view))
7620     {
7621       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
7622       if (headers_visible)
7623         {
7624           gdk_window_move_resize (tree_view->priv->bin_window, x + TREE_VIEW_HEADER_HEIGHT (tree_view), y, tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
7625
7626           if (GTK_WIDGET_MAPPED (tree_view))
7627             gtk_tree_view_map_buttons (tree_view);
7628         }
7629       else
7630         {
7631           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
7632
7633           for (list = tree_view->priv->columns; list; list = list->next)
7634             {
7635               column = list->data;
7636               gtk_widget_unmap (column->button);
7637             }
7638           gdk_window_hide (tree_view->priv->header_window);
7639         }
7640     }
7641
7642   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
7643   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
7644   tree_view->priv->vadjustment->lower = 0;
7645   tree_view->priv->vadjustment->upper = tree_view->priv->height;
7646   gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
7647
7648   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7649
7650   g_object_notify (G_OBJECT (tree_view), "headers_visible");
7651 }
7652
7653 static void
7654 gtk_tree_view_column_autosize (GtkTreeView *tree_view,
7655                                GtkTreeViewColumn *column)
7656 {
7657   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7658   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
7659
7660   if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
7661     return;
7662
7663   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
7664
7665   presize_handler_callback (tree_view);
7666   while (validate_rows_handler (tree_view));
7667
7668   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7669 }
7670
7671 /**
7672  * gtk_tree_view_columns_autosize:
7673  * @tree_view: A #GtkTreeView.
7674  *
7675  * Resizes all columns to their optimal width. Only works after the
7676  * treeview has been realized.
7677  **/
7678 void
7679 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
7680 {
7681   gboolean dirty = FALSE;
7682   GList *list;
7683   GtkTreeViewColumn *column;
7684
7685   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7686
7687   for (list = tree_view->priv->columns; list; list = list->next)
7688     {
7689       column = list->data;
7690       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
7691         continue;
7692       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7693       dirty = TRUE;
7694     }
7695
7696   if (dirty)
7697     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7698 }
7699
7700 /**
7701  * gtk_tree_view_set_headers_clickable:
7702  * @tree_view: A #GtkTreeView.
7703  * @setting: %TRUE if the columns are clickable.
7704  *
7705  * Allow the column title buttons to be clicked.
7706  **/
7707 void
7708 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
7709                                      gboolean   setting)
7710 {
7711   GList *list;
7712
7713   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7714   g_return_if_fail (tree_view->priv->model != NULL);
7715
7716   for (list = tree_view->priv->columns; list; list = list->next)
7717     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
7718
7719   g_object_notify (G_OBJECT (tree_view), "headers_clickable");
7720 }
7721
7722
7723 /**
7724  * gtk_tree_view_set_rules_hint
7725  * @tree_view: a #GtkTreeView
7726  * @setting: %TRUE if the tree requires reading across rows
7727  *
7728  * This function tells GTK+ that the user interface for your
7729  * application requires users to read across tree rows and associate
7730  * cells with one another. By default, GTK+ will then render the tree
7731  * with alternating row colors. Do <emphasis>not</emphasis> use it
7732  * just because you prefer the appearance of the ruled tree; that's a
7733  * question for the theme. Some themes will draw tree rows in
7734  * alternating colors even when rules are turned off, and users who
7735  * prefer that appearance all the time can choose those themes. You
7736  * should call this function only as a <emphasis>semantic</emphasis>
7737  * hint to the theme engine that your tree makes alternating colors
7738  * useful from a functional standpoint (since it has lots of columns,
7739  * generally).
7740  *
7741  **/
7742 void
7743 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
7744                               gboolean      setting)
7745 {
7746   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7747
7748   setting = setting != FALSE;
7749
7750   if (tree_view->priv->has_rules != setting)
7751     {
7752       tree_view->priv->has_rules = setting;
7753       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
7754     }
7755
7756   g_object_notify (G_OBJECT (tree_view), "rules_hint");
7757 }
7758
7759 /**
7760  * gtk_tree_view_get_rules_hint
7761  * @tree_view: a #GtkTreeView
7762  *
7763  * Gets the setting set by gtk_tree_view_set_rules_hint().
7764  *
7765  * Return value: %TRUE if rules are useful for the user of this tree
7766  **/
7767 gboolean
7768 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
7769 {
7770   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7771
7772   return tree_view->priv->has_rules;
7773 }
7774
7775 /* Public Column functions
7776  */
7777
7778 /**
7779  * gtk_tree_view_append_column:
7780  * @tree_view: A #GtkTreeView.
7781  * @column: The #GtkTreeViewColumn to add.
7782  *
7783  * Appends @column to the list of columns.
7784  *
7785  * Return value: The number of columns in @tree_view after appending.
7786  **/
7787 gint
7788 gtk_tree_view_append_column (GtkTreeView       *tree_view,
7789                              GtkTreeViewColumn *column)
7790 {
7791   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7792   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
7793   g_return_val_if_fail (column->tree_view == NULL, -1);
7794
7795   return gtk_tree_view_insert_column (tree_view, column, -1);
7796 }
7797
7798
7799 /**
7800  * gtk_tree_view_remove_column:
7801  * @tree_view: A #GtkTreeView.
7802  * @column: The #GtkTreeViewColumn to remove.
7803  *
7804  * Removes @column from @tree_view.
7805  *
7806  * Return value: The number of columns in @tree_view after removing.
7807  **/
7808 gint
7809 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
7810                              GtkTreeViewColumn *column)
7811 {
7812   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7813   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
7814   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
7815
7816   _gtk_tree_view_column_unset_tree_view (column);
7817
7818   if (tree_view->priv->focus_column == column)
7819     tree_view->priv->focus_column = NULL;
7820
7821   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
7822   tree_view->priv->n_columns--;
7823
7824   if (GTK_WIDGET_REALIZED (tree_view))
7825     {
7826       GList *list;
7827
7828       _gtk_tree_view_column_unrealize_button (column);
7829       for (list = tree_view->priv->columns; list; list = list->next)
7830         {
7831           GtkTreeViewColumn *tmp_column;
7832
7833           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
7834           if (tmp_column->visible)
7835             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
7836         }
7837
7838       if (tree_view->priv->n_columns == 0 &&
7839           gtk_tree_view_get_headers_visible (tree_view))
7840         gdk_window_hide (tree_view->priv->header_window);
7841
7842       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7843     }
7844
7845   g_object_unref (G_OBJECT (column));
7846   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
7847
7848   return tree_view->priv->n_columns;
7849 }
7850
7851 /**
7852  * gtk_tree_view_insert_column:
7853  * @tree_view: A #GtkTreeView.
7854  * @column: The #GtkTreeViewColumn to be inserted.
7855  * @position: The position to insert @column in.
7856  *
7857  * This inserts the @column into the @tree_view at @position.  If @position is
7858  * -1, then the column is inserted at the end.
7859  *
7860  * Return value: The number of columns in @tree_view after insertion.
7861  **/
7862 gint
7863 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
7864                              GtkTreeViewColumn *column,
7865                              gint               position)
7866 {
7867   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7868   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
7869   g_return_val_if_fail (column->tree_view == NULL, -1);
7870
7871   g_object_ref (G_OBJECT (column));
7872   gtk_object_sink (GTK_OBJECT (column));
7873
7874   if (tree_view->priv->n_columns == 0 &&
7875       GTK_WIDGET_REALIZED (tree_view) &&
7876       gtk_tree_view_get_headers_visible (tree_view))
7877     {
7878       gdk_window_show (tree_view->priv->header_window);
7879     }
7880
7881   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
7882                                             column, position);
7883   tree_view->priv->n_columns++;
7884
7885   _gtk_tree_view_column_set_tree_view (column, tree_view);
7886
7887   if (GTK_WIDGET_REALIZED (tree_view))
7888     {
7889       GList *list;
7890
7891       _gtk_tree_view_column_realize_button (column);
7892
7893       for (list = tree_view->priv->columns; list; list = list->next)
7894         {
7895           column = GTK_TREE_VIEW_COLUMN (list->data);
7896           if (column->visible)
7897             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7898         }
7899       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7900     }
7901
7902   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
7903
7904   return tree_view->priv->n_columns;
7905 }
7906
7907 /**
7908  * gtk_tree_view_insert_column_with_attributes:
7909  * @tree_view: A #GtkTreeView
7910  * @position: The position to insert the new column in.
7911  * @title: The title to set the header to.
7912  * @cell: The #GtkCellRenderer.
7913  * @Varargs: A %NULL-terminated list of attributes.
7914  *
7915  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
7916  * @position.  If @position is -1, then the newly created column is inserted at
7917  * the end.  The column is initialized with the attributes given.
7918  *
7919  * Return value: The number of columns in @tree_view after insertion.
7920  **/
7921 gint
7922 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
7923                                              gint             position,
7924                                              gchar           *title,
7925                                              GtkCellRenderer *cell,
7926                                              ...)
7927 {
7928   GtkTreeViewColumn *column;
7929   gchar *attribute;
7930   va_list args;
7931   gint column_id;
7932
7933   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7934
7935   column = gtk_tree_view_column_new ();
7936
7937   gtk_tree_view_column_set_title (column, title);
7938   gtk_tree_view_column_pack_start (column, cell, TRUE);
7939
7940   va_start (args, cell);
7941
7942   attribute = va_arg (args, gchar *);
7943
7944   while (attribute != NULL)
7945     {
7946       column_id = va_arg (args, gint);
7947       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
7948       attribute = va_arg (args, gchar *);
7949     }
7950
7951   va_end (args);
7952
7953   gtk_tree_view_insert_column (tree_view, column, position);
7954
7955   return tree_view->priv->n_columns;
7956 }
7957
7958 /**
7959  * gtk_tree_view_insert_column_with_data_func:
7960  * @tree_view: a #GtkTreeView
7961  * @position: Position to insert, -1 for append
7962  * @title: column title
7963  * @cell: cell renderer for column
7964  * @func: function to set attributes of cell renderer
7965  * @data: data for @func
7966  * @dnotify: destroy notifier for @data
7967  *
7968  * Convenience function that inserts a new column into the #GtkTreeView
7969  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
7970  * attributes (normally using data from the model). See also
7971  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
7972  *
7973  * Return value: number of columns in the tree view post-insert
7974  **/
7975 gint
7976 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
7977                                              gint                       position,
7978                                              gchar                     *title,
7979                                              GtkCellRenderer           *cell,
7980                                              GtkTreeCellDataFunc        func,
7981                                              gpointer                   data,
7982                                              GDestroyNotify             dnotify)
7983 {
7984   GtkTreeViewColumn *column;
7985
7986   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7987
7988   column = gtk_tree_view_column_new ();
7989
7990   gtk_tree_view_column_set_title (column, title);
7991   gtk_tree_view_column_pack_start (column, cell, TRUE);
7992   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
7993
7994   gtk_tree_view_insert_column (tree_view, column, position);
7995
7996   return tree_view->priv->n_columns;
7997 }
7998
7999 /**
8000  * gtk_tree_view_get_column:
8001  * @tree_view: A #GtkTreeView.
8002  * @n: The position of the column, counting from 0.
8003  *
8004  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
8005  *
8006  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
8007  * range of columns.
8008  **/
8009 GtkTreeViewColumn *
8010 gtk_tree_view_get_column (GtkTreeView *tree_view,
8011                           gint         n)
8012 {
8013   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8014
8015   if (n < 0 || n >= tree_view->priv->n_columns)
8016     return NULL;
8017
8018   if (tree_view->priv->columns == NULL)
8019     return NULL;
8020
8021   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
8022 }
8023
8024 /**
8025  * gtk_tree_view_get_columns:
8026  * @tree_view: A #GtkTreeView
8027  *
8028  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
8029  * The returned list must be freed with g_list_free ().
8030  *
8031  * Return value: A list of #GtkTreeViewColumn s
8032  **/
8033 GList *
8034 gtk_tree_view_get_columns (GtkTreeView *tree_view)
8035 {
8036   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8037
8038   return g_list_copy (tree_view->priv->columns);
8039 }
8040
8041 /**
8042  * gtk_tree_view_move_column_after:
8043  * @tree_view: A #GtkTreeView
8044  * @column: The #GtkTreeViewColumn to be moved.
8045  * @base_column: The #GtkTreeViewColumn to be moved relative to, or %NULL.
8046  *
8047  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
8048  * @column is placed in the first position.
8049  **/
8050 void
8051 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
8052                                  GtkTreeViewColumn *column,
8053                                  GtkTreeViewColumn *base_column)
8054 {
8055   GList *column_list_el, *base_el = NULL;
8056
8057   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8058
8059   column_list_el = g_list_find (tree_view->priv->columns, column);
8060   g_return_if_fail (column_list_el != NULL);
8061
8062   if (base_column)
8063     {
8064       base_el = g_list_find (tree_view->priv->columns, base_column);
8065       g_return_if_fail (base_el != NULL);
8066     }
8067
8068   if (column_list_el->prev == base_el)
8069     return;
8070
8071   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
8072   if (base_el == NULL)
8073     {
8074       column_list_el->prev = NULL;
8075       column_list_el->next = tree_view->priv->columns;
8076       if (column_list_el->next)
8077         column_list_el->next->prev = column_list_el;
8078       tree_view->priv->columns = column_list_el;
8079     }
8080   else
8081     {
8082       column_list_el->prev = base_el;
8083       column_list_el->next = base_el->next;
8084       if (column_list_el->next)
8085         column_list_el->next->prev = column_list_el;
8086       base_el->next = column_list_el;
8087     }
8088
8089   if (GTK_WIDGET_REALIZED (tree_view))
8090     {
8091       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8092       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view));
8093     }
8094
8095   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
8096 }
8097
8098 /**
8099  * gtk_tree_view_set_expander_column:
8100  * @tree_view: A #GtkTreeView
8101  * @column: %NULL, or the column to draw the expander arrow at.
8102  *
8103  * Sets the column to draw the expander arrow at. It must be in @tree_view.  If
8104  * @column is %NULL, then the expander arrow is always at the first visible
8105  * column.
8106  **/
8107 void
8108 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
8109                                    GtkTreeViewColumn *column)
8110 {
8111   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8112   if (column != NULL)
8113     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
8114
8115   if (tree_view->priv->expander_column != column)
8116     {
8117       GList *list;
8118
8119       if (column)
8120         {
8121           /* Confirm that column is in tree_view */
8122           for (list = tree_view->priv->columns; list; list = list->next)
8123             if (list->data == column)
8124               break;
8125           g_return_if_fail (list != NULL);
8126         }
8127
8128       tree_view->priv->expander_column = column;
8129       g_object_notify (G_OBJECT (tree_view), "expander_column");
8130     }
8131 }
8132
8133 /**
8134  * gtk_tree_view_get_expander_column:
8135  * @tree_view: A #GtkTreeView
8136  *
8137  * Returns the column that is the current expander column.  This
8138  * column has the expander arrow drawn next to it.
8139  *
8140  * Return value: The expander column.
8141  **/
8142 GtkTreeViewColumn *
8143 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
8144 {
8145   GList *list;
8146
8147   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8148
8149   for (list = tree_view->priv->columns; list; list = list->next)
8150     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
8151       return (GtkTreeViewColumn *) list->data;
8152   return NULL;
8153 }
8154
8155
8156 /**
8157  * gtk_tree_view_set_column_drag_function:
8158  * @tree_view: A #GtkTreeView.
8159  * @func: A function to determine which columns are reorderable, or %NULL.
8160  * @user_data: User data to be passed to @func, or %NULL
8161  * @destroy: Destroy notifier for @user_data, or %NULL
8162  *
8163  * Sets a user function for determining where a column may be dropped when
8164  * dragged.  This function is called on every column pair in turn at the
8165  * beginning of a column drag to determine where a drop can take place.  The
8166  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
8167  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
8168  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
8169  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
8170  * @tree_view reverts to the default behavior of allowing all columns to be
8171  * dropped everywhere.
8172  **/
8173 void
8174 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
8175                                         GtkTreeViewColumnDropFunc  func,
8176                                         gpointer                   user_data,
8177                                         GtkDestroyNotify           destroy)
8178 {
8179   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8180
8181   if (tree_view->priv->column_drop_func_data_destroy)
8182     (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
8183
8184   tree_view->priv->column_drop_func = func;
8185   tree_view->priv->column_drop_func_data = user_data;
8186   tree_view->priv->column_drop_func_data_destroy = destroy;
8187 }
8188
8189 /**
8190  * gtk_tree_view_scroll_to_point:
8191  * @tree_view: a #GtkTreeView
8192  * @tree_x: X coordinate of new top-left pixel of visible area
8193  * @tree_y: Y coordinate of new top-left pixel of visible area
8194  *
8195  * Scrolls the tree view such that the top-left corner of the visible
8196  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
8197  * in tree window coordinates.  The @tree_view must be realized before
8198  * this function is called.  If it isn't, you probably want to be
8199  * using gtk_tree_view_scroll_to_cell().
8200  **/
8201 void
8202 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
8203                                gint         tree_x,
8204                                gint         tree_y)
8205 {
8206   GtkAdjustment *hadj;
8207   GtkAdjustment *vadj;
8208
8209   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8210   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
8211
8212   hadj = tree_view->priv->hadjustment;
8213   vadj = tree_view->priv->vadjustment;
8214
8215   gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
8216   gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
8217 }
8218
8219 /**
8220  * gtk_tree_view_scroll_to_cell
8221  * @tree_view: A #GtkTreeView.
8222  * @path: The path of the row to move to, or %NULL.
8223  * @column: The #GtkTreeViewColumn to move horizontally to, or %NULL.
8224  * @use_align: whether to use alignment arguments, or %FALSE.
8225  * @row_align: The vertical alignment of the row specified by @path.
8226  * @col_align: The horizontal alignment of the column specified by @column.
8227  *
8228  * Moves the alignments of @tree_view to the position specified by @column and
8229  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
8230  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
8231  * or @path need to be non-%NULL.  @row_align determines where the row is
8232  * placed, and @col_align determines where @column is placed.  Both are expected
8233  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
8234  * right/bottom alignment, 0.5 means center.
8235  *
8236  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
8237  * tree does the minimum amount of work to scroll the cell onto the screen.
8238  * This means that the cell will be scrolled to the edge closest to it's current
8239  * position.  If the cell is currently visible on the screen, nothing is done.
8240  **/
8241 void
8242 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
8243                               GtkTreePath       *path,
8244                               GtkTreeViewColumn *column,
8245                               gboolean           use_align,
8246                               gfloat             row_align,
8247                               gfloat             col_align)
8248 {
8249   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8250   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
8251   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
8252   g_return_if_fail (path != NULL || column != NULL);
8253
8254   row_align = CLAMP (row_align, 0.0, 1.0);
8255   col_align = CLAMP (col_align, 0.0, 1.0);
8256
8257   if (tree_view->priv->scroll_to_path)
8258     gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
8259
8260   tree_view->priv->scroll_to_path = NULL;
8261   tree_view->priv->scroll_to_column = NULL;
8262
8263   if (path)
8264     tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
8265   if (column)
8266     tree_view->priv->scroll_to_column = column;
8267   tree_view->priv->scroll_to_use_align = use_align;
8268   tree_view->priv->scroll_to_row_align = row_align;
8269   tree_view->priv->scroll_to_col_align = col_align;
8270
8271   install_presize_handler (tree_view);
8272 }
8273 #if 0
8274   gtk_tree_view_get_cell_area (tree_view, path, column, &cell_rect);
8275   gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
8276
8277   dest_x = vis_rect.x;
8278   dest_y = vis_rect.y;
8279
8280   if (column)
8281     {
8282       if (use_align)
8283         {
8284           dest_x = cell_rect.x + cell_rect.width * row_align - vis_rect.width * row_align;
8285         }
8286       else
8287         {
8288           if (cell_rect.x < vis_rect.x)
8289             dest_x = cell_rect.x - vis_rect.width * within_margin;
8290           else if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
8291             dest_x = cell_rect.x + cell_rect.width - vis_rect.width * (1 - within_margin);
8292         }
8293     }
8294
8295   if (path)
8296     {
8297       if (use_align)
8298         {
8299           dest_y = cell_rect.y + cell_rect.height * col_align - vis_rect.height * col_align;
8300         }
8301       else
8302         {
8303           if (cell_rect.y < vis_rect.y)
8304             dest_y = cell_rect.y - vis_rect.height * within_margin;
8305           else if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
8306             dest_y = cell_rect.y + cell_rect.height - vis_rect.height * (1 - within_margin);
8307         }
8308     }
8309
8310   gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
8311 #endif
8312
8313
8314 /**
8315  * gtk_tree_view_row_activated:
8316  * @tree_view: A #GtkTreeView
8317  * @path: The #GtkTreePath to be activated.
8318  * @column: The #GtkTreeViewColumn to be activated.
8319  *
8320  * Activates the cell determined by @path and @column.
8321  **/
8322 void
8323 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
8324                              GtkTreePath       *path,
8325                              GtkTreeViewColumn *column)
8326 {
8327   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8328
8329   g_signal_emit (G_OBJECT(tree_view), tree_view_signals[ROW_ACTIVATED], 0, path, column);
8330 }
8331
8332
8333 static void
8334 gtk_tree_view_expand_all_helper (GtkRBTree  *tree,
8335                                  GtkRBNode  *node,
8336                                  gpointer  data)
8337 {
8338   GtkTreeView *tree_view = data;
8339
8340   if (node->children)
8341     _gtk_rbtree_traverse (node->children,
8342                           node->children->root,
8343                           G_PRE_ORDER,
8344                           gtk_tree_view_expand_all_helper,
8345                           data);
8346   else if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT && node->children == NULL)
8347     {
8348       GtkTreePath *path;
8349       GtkTreeIter iter;
8350       GtkTreeIter child;
8351
8352       node->children = _gtk_rbtree_new ();
8353       node->children->parent_tree = tree;
8354       node->children->parent_node = node;
8355       path = _gtk_tree_view_find_path (tree_view, tree, node);
8356       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8357       gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
8358       gtk_tree_view_build_tree (tree_view,
8359                                 node->children,
8360                                 &child,
8361                                 gtk_tree_path_get_depth (path) + 1,
8362                                 TRUE);
8363       gtk_tree_path_free (path);
8364     }
8365 }
8366
8367 /**
8368  * gtk_tree_view_expand_all:
8369  * @tree_view: A #GtkTreeView.
8370  *
8371  * Recursively expands all nodes in the @tree_view.
8372  **/
8373 void
8374 gtk_tree_view_expand_all (GtkTreeView *tree_view)
8375 {
8376   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8377
8378   if (tree_view->priv->tree == NULL)
8379     return;
8380
8381   _gtk_rbtree_traverse (tree_view->priv->tree,
8382                         tree_view->priv->tree->root,
8383                         G_PRE_ORDER,
8384                         gtk_tree_view_expand_all_helper,
8385                         tree_view);
8386 }
8387
8388 /* Timeout to animate the expander during expands and collapses */
8389 static gboolean
8390 expand_collapse_timeout (gpointer data)
8391 {
8392   GtkTreeView *tree_view = data;
8393   GtkRBNode *node;
8394   GtkRBTree *tree;
8395   gboolean expanding;
8396   gboolean redraw;
8397
8398   GDK_THREADS_ENTER ();
8399
8400   redraw = FALSE;
8401   expanding = TRUE;
8402
8403   node = tree_view->priv->expanded_collapsed_node;
8404   tree = tree_view->priv->expanded_collapsed_tree;
8405
8406   if (node->children == NULL)
8407     expanding = FALSE;
8408
8409   if (expanding)
8410     {
8411       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
8412         {
8413           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8414           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8415
8416           redraw = TRUE;
8417
8418         }
8419       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
8420         {
8421           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8422
8423           redraw = TRUE;
8424         }
8425     }
8426   else
8427     {
8428       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
8429         {
8430           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8431           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8432
8433           redraw = TRUE;
8434         }
8435       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
8436         {
8437           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8438
8439           redraw = TRUE;
8440
8441         }
8442     }
8443
8444   if (redraw)
8445     {
8446       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
8447
8448       GDK_THREADS_LEAVE ();
8449
8450       return TRUE;
8451     }
8452
8453   GDK_THREADS_LEAVE ();
8454
8455   return FALSE;
8456 }
8457
8458 /**
8459  * gtk_tree_view_collapse_all:
8460  * @tree_view: A #GtkTreeView.
8461  *
8462  * Recursively collapses all visible, expanded nodes in @tree_view.
8463  **/
8464 void
8465 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
8466 {
8467   GtkRBTree *tree;
8468   GtkRBNode *node;
8469   GtkTreePath *path;
8470   guint *indices;
8471
8472   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8473
8474   if (tree_view->priv->tree == NULL)
8475     return;
8476
8477   path = gtk_tree_path_new ();
8478   gtk_tree_path_down (path);
8479   indices = gtk_tree_path_get_indices (path);
8480
8481   tree = tree_view->priv->tree;
8482   node = tree->root;
8483   while (node && node->left != tree->nil)
8484     node = node->left;
8485
8486   while (node)
8487     {
8488       if (node->children)
8489         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
8490       indices[0]++;
8491       node = _gtk_rbtree_next (tree, node);
8492     }
8493
8494   gtk_tree_path_free (path);
8495 }
8496
8497 /* FIXME the bool return values for expand_row and collapse_row are
8498  * not analagous; they should be TRUE if the row had children and
8499  * was not already in the requested state.
8500  */
8501
8502
8503 static gboolean
8504 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
8505                                GtkTreePath *path,
8506                                GtkRBTree   *tree,
8507                                GtkRBNode   *node,
8508                                gboolean     open_all,
8509                                gboolean     animate)
8510 {
8511   GtkTreeIter iter;
8512   GtkTreeIter temp;
8513   gboolean expand;
8514
8515
8516   if (node->children)
8517     return TRUE;
8518   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
8519     return FALSE;
8520
8521   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8522   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
8523     return FALSE;
8524
8525   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
8526
8527   if (expand)
8528     return FALSE;
8529
8530   node->children = _gtk_rbtree_new ();
8531   node->children->parent_tree = tree;
8532   node->children->parent_node = node;
8533
8534   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
8535
8536   gtk_tree_view_build_tree (tree_view,
8537                             node->children,
8538                             &temp,
8539                             gtk_tree_path_get_depth (path) + 1,
8540                             open_all);
8541
8542   if (tree_view->priv->expand_collapse_timeout)
8543     {
8544       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
8545       tree_view->priv->expand_collapse_timeout = 0;
8546     }
8547
8548   if (tree_view->priv->expanded_collapsed_node != NULL)
8549     {
8550       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
8551       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8552
8553       tree_view->priv->expanded_collapsed_node = NULL;
8554     }
8555
8556   if (animate)
8557     {
8558       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
8559       tree_view->priv->expanded_collapsed_node = node;
8560       tree_view->priv->expanded_collapsed_tree = tree;
8561
8562       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8563     }
8564
8565   install_presize_handler (tree_view);
8566
8567   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[ROW_EXPANDED], 0, &iter, path);
8568   return TRUE;
8569 }
8570
8571
8572 /**
8573  * gtk_tree_view_expand_row:
8574  * @tree_view: a #GtkTreeView
8575  * @path: path to a row
8576  * @open_all: whether to recursively expand, or just expand immediate children
8577  *
8578  * Opens the row so its children are visible.
8579  *
8580  * Return value: %TRUE if the row existed and had children
8581  **/
8582 gboolean
8583 gtk_tree_view_expand_row (GtkTreeView *tree_view,
8584                           GtkTreePath *path,
8585                           gboolean     open_all)
8586 {
8587   GtkRBTree *tree;
8588   GtkRBNode *node;
8589
8590   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8591   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
8592   g_return_val_if_fail (path != NULL, FALSE);
8593
8594   if (_gtk_tree_view_find_node (tree_view,
8595                                 path,
8596                                 &tree,
8597                                 &node))
8598     return FALSE;
8599
8600   if (tree != NULL)
8601     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
8602   else
8603     return FALSE;
8604 }
8605
8606 static gboolean
8607 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
8608                                  GtkTreePath *path,
8609                                  GtkRBTree   *tree,
8610                                  GtkRBNode   *node,
8611                                  gboolean     animate)
8612 {
8613   GtkTreeIter iter;
8614   GtkTreeIter children;
8615   gboolean collapse;
8616   gint x, y;
8617   GList *list;
8618
8619   if (node->children == NULL)
8620     return FALSE;
8621
8622   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8623
8624   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
8625
8626   if (collapse)
8627     return FALSE;
8628
8629   /* if the prelighted node is a child of us, we want to unprelight it.  We have
8630    * a chance to prelight the correct node below */
8631
8632   if (tree_view->priv->prelight_tree)
8633     {
8634       GtkRBTree *parent_tree;
8635       GtkRBNode *parent_node;
8636
8637       parent_tree = tree_view->priv->prelight_tree->parent_tree;
8638       parent_node = tree_view->priv->prelight_tree->parent_node;
8639       while (parent_tree)
8640         {
8641           if (parent_tree == tree && parent_node == node)
8642             {
8643               ensure_unprelighted (tree_view);
8644               break;
8645             }
8646           parent_node = parent_tree->parent_node;
8647           parent_tree = parent_tree->parent_tree;
8648         }
8649     }
8650
8651   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
8652
8653   for (list = tree_view->priv->columns; list; list = list->next)
8654     {
8655       GtkTreeViewColumn *column = list->data;
8656
8657       if (column->visible == FALSE)
8658         continue;
8659       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8660         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8661     }
8662
8663   if (tree_view->priv->destroy_count_func)
8664     {
8665       GtkTreePath *child_path;
8666       gint child_count = 0;
8667       child_path = gtk_tree_path_copy (path);
8668       gtk_tree_path_down (child_path);
8669       if (node->children)
8670         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8671       (* tree_view->priv->destroy_count_func) (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
8672       gtk_tree_path_free (child_path);
8673     }
8674
8675   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
8676     g_signal_emit_by_name (G_OBJECT (tree_view->priv->selection), "changed", 0);
8677   _gtk_rbtree_remove (node->children);
8678
8679   if (tree_view->priv->expand_collapse_timeout)
8680     {
8681       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
8682       tree_view->priv->expand_collapse_timeout = 0;
8683     }
8684
8685   if (tree_view->priv->expanded_collapsed_node != NULL)
8686     {
8687       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
8688       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8689
8690       tree_view->priv->expanded_collapsed_node = NULL;
8691     }
8692
8693   if (animate)
8694     {
8695       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
8696       tree_view->priv->expanded_collapsed_node = node;
8697       tree_view->priv->expanded_collapsed_tree = tree;
8698
8699       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8700     }
8701
8702   if (GTK_WIDGET_MAPPED (tree_view))
8703     {
8704       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8705     }
8706
8707   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8708     {
8709       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8710
8711       if (gtk_tree_path_is_ancestor (path, cursor_path))
8712         {
8713           gtk_tree_row_reference_free (tree_view->priv->cursor);
8714           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
8715                                                                       tree_view->priv->model,
8716                                                                       path);
8717         }
8718       gtk_tree_path_free (cursor_path);
8719     }
8720
8721   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
8722       {
8723       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
8724       if (gtk_tree_path_is_ancestor (path, anchor_path))
8725         {
8726           gtk_tree_row_reference_free (tree_view->priv->anchor);
8727           tree_view->priv->anchor = NULL;
8728         }
8729       gtk_tree_path_free (anchor_path);
8730
8731     }
8732
8733   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
8734
8735   /* now that we've collapsed all rows, we want to try to set the prelight
8736    * again. To do this, we fake a motion event and send it to ourselves. */
8737
8738   if (gdk_window_at_pointer (&x, &y) == tree_view->priv->bin_window)
8739     {
8740       GdkEventMotion event;
8741       event.window = tree_view->priv->bin_window;
8742       event.x = x;
8743       event.y = y;
8744
8745       /* despite the fact this isn't a real event, I'm almost positive it will
8746        * never trigger a drag event.  maybe_drag is the only function that uses
8747        * more than just event.x and event.y. */
8748       gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
8749     }
8750   return TRUE;
8751 }
8752
8753 /**
8754  * gtk_tree_view_collapse_row:
8755  * @tree_view: a #GtkTreeView
8756  * @path: path to a row in the @tree_view
8757  *
8758  * Collapses a row (hides its child rows, if they exist).
8759  *
8760  * Return value: %TRUE if the row was collapsed.
8761  **/
8762 gboolean
8763 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
8764                             GtkTreePath *path)
8765 {
8766   GtkRBTree *tree;
8767   GtkRBNode *node;
8768
8769   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8770   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
8771   g_return_val_if_fail (path != NULL, FALSE);
8772
8773   if (_gtk_tree_view_find_node (tree_view,
8774                                 path,
8775                                 &tree,
8776                                 &node))
8777     return FALSE;
8778
8779   if (tree == NULL || node->children == NULL)
8780     return FALSE;
8781
8782   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
8783 }
8784
8785 static void
8786 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
8787                                         GtkRBTree              *tree,
8788                                         GtkTreePath            *path,
8789                                         GtkTreeViewMappingFunc  func,
8790                                         gpointer                user_data)
8791 {
8792   GtkRBNode *node;
8793
8794   if (tree == NULL || tree->root == NULL)
8795     return;
8796
8797   node = tree->root;
8798
8799   while (node && node->left != tree->nil)
8800     node = node->left;
8801
8802   while (node)
8803     {
8804       if (node->children)
8805         {
8806           gtk_tree_path_down (path);
8807           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
8808           gtk_tree_path_up (path);
8809           (* func) (tree_view, path, user_data);
8810         }
8811       gtk_tree_path_next (path);
8812       node = _gtk_rbtree_next (tree, node);
8813     }
8814 }
8815
8816 /**
8817  * gtk_tree_view_map_expanded_rows:
8818  * @tree_view: A #GtkTreeView
8819  * @func: A function to be called
8820  * @data: User data to be passed to the function.
8821  *
8822  * Calls @func on all expanded rows.
8823  **/
8824 void
8825 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
8826                                  GtkTreeViewMappingFunc  func,
8827                                  gpointer                user_data)
8828 {
8829   GtkTreePath *path;
8830
8831   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8832   g_return_if_fail (func != NULL);
8833
8834   path = gtk_tree_path_new_first ();
8835
8836   gtk_tree_view_map_expanded_rows_helper (tree_view,
8837                                           tree_view->priv->tree,
8838                                           path, func, user_data);
8839
8840   gtk_tree_path_free (path);
8841 }
8842
8843 /**
8844  * gtk_tree_view_row_expanded:
8845  * @tree_view: A #GtkTreeView.
8846  * @path: A #GtkTreePath to test expansion state.
8847  *
8848  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
8849  *
8850  * Return value: %TRUE if #path is expanded.
8851  **/
8852 gboolean
8853 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
8854                             GtkTreePath *path)
8855 {
8856   GtkRBTree *tree;
8857   GtkRBNode *node;
8858
8859   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8860   g_return_val_if_fail (path != NULL, FALSE);
8861
8862   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
8863
8864   if (node == NULL)
8865     return FALSE;
8866
8867   return (node->children != NULL);
8868 }
8869
8870 static GtkTargetEntry row_targets[] = {
8871   { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
8872 };
8873
8874
8875 /**
8876  * gtk_tree_view_get_reorderable:
8877  * @tree_view: a #GtkTreeView
8878  *
8879  * Retrieves whether the user can reorder the tree via drag-and-drop. See
8880  * gtk_tree_view_set_reorderable().
8881  *
8882  * Return value: %TRUE if the tree can be reordered.
8883  **/
8884 gboolean
8885 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
8886 {
8887   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8888
8889   return tree_view->priv->reorderable;
8890 }
8891
8892 /**
8893  * gtk_tree_view_set_reorderable:
8894  * @tree_view: A #GtkTreeView.
8895  * @reorderable: %TRUE, if the tree can be reordered.
8896  *
8897  * This function is a convenience function to allow you to reorder models that
8898  * support the #GtkDragSourceIface and the #GtkDragDestIface.  Both
8899  * #GtkTreeStore and #GtkListStore support these.  If @reorderable is %TRUE, then
8900  * the user can reorder the model by dragging and dropping rows.  The
8901  * developer can listen to these changes by connecting to the model's
8902  * signals.
8903  *
8904  * This function does not give you any degree of control over the order -- any
8905  * reorderering is allowed.  If more control is needed, you should probably
8906  * handle drag and drop manually.
8907  **/
8908 void
8909 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
8910                                gboolean     reorderable)
8911 {
8912   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8913
8914   reorderable = reorderable != FALSE;
8915
8916   if (tree_view->priv->reorderable == reorderable)
8917     return;
8918
8919   if (reorderable)
8920     {
8921       gtk_tree_view_enable_model_drag_source (tree_view,
8922                                               GDK_BUTTON1_MASK,
8923                                               row_targets,
8924                                               G_N_ELEMENTS (row_targets),
8925                                               GDK_ACTION_MOVE);
8926       gtk_tree_view_enable_model_drag_dest (tree_view,
8927                                             row_targets,
8928                                             G_N_ELEMENTS (row_targets),
8929                                             GDK_ACTION_MOVE);
8930     }
8931   else
8932     {
8933       gtk_tree_view_unset_rows_drag_source (tree_view);
8934       gtk_tree_view_unset_rows_drag_dest (tree_view);
8935     }
8936
8937   tree_view->priv->reorderable = reorderable;
8938
8939   g_object_notify (G_OBJECT (tree_view), "reorderable");
8940 }
8941
8942 static void
8943 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
8944                                GtkTreePath     *path,
8945                                gboolean         clear_and_select)
8946 {
8947   GtkRBTree *tree = NULL;
8948   GtkRBNode *node = NULL;
8949   GdkModifierType state = 0;
8950
8951   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8952     {
8953       GtkTreePath *cursor_path;
8954       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8955       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
8956       gtk_tree_path_free (cursor_path);
8957     }
8958
8959   gtk_tree_row_reference_free (tree_view->priv->cursor);
8960   gtk_get_current_event_state (&state);
8961
8962   tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
8963                                                               tree_view->priv->model,
8964                                                               path);
8965   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
8966   if (tree != NULL)
8967     {
8968       if (clear_and_select && !((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK))
8969         _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
8970                                                   node, tree, path,
8971                                                   state);
8972       gtk_tree_view_clamp_node_visible (tree_view, tree, node);
8973       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8974     }
8975
8976   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[CURSOR_CHANGED], 0);
8977 }
8978
8979 /**
8980  * gtk_tree_view_get_cursor:
8981  * @tree_view: A #GtkTreeView
8982  * @path: A pointer to be filled with the current cursor path, or %NULL
8983  * @focus_column: A pointer to be filled with the current focus column, or %NULL
8984  *
8985  * Fills in @path and @focus_column with the current path and focus column.  If
8986  * the cursor isn't currently set, then *@path will be %NULL.  If no column
8987  * currently has focus, then *@focus_column will be %NULL.
8988  **/
8989 void
8990 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
8991                           GtkTreePath       **path,
8992                           GtkTreeViewColumn **focus_column)
8993 {
8994   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8995
8996   if (path)
8997     {
8998       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8999         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9000       else
9001         *path = NULL;
9002     }
9003
9004   if (focus_column)
9005     {
9006       *focus_column = tree_view->priv->focus_column;
9007     }
9008 }
9009
9010 /**
9011  * gtk_tree_view_set_cursor:
9012  * @tree_view: A #GtkTreeView
9013  * @path: A #GtkTreePath
9014  * @focus_column: A #GtkTreeViewColumn, or %NULL
9015  * @start_editing: %TRUE if the specified cell should start being edited.
9016  *
9017  * Sets the current keyboard focus to be at @path, and selects it.  This is
9018  * useful when you want to focus the user's attention on a particular row.  If
9019  * @column is not %NULL, then focus is given to the column specified by it.
9020  * Additionally, if @column is specified, and @start_editing is %TRUE, then
9021  * editing should be started in the specified cell.  This function is often
9022  * followed by @gtk_widget_grab_focus (@tree_view) in order to give keyboard
9023  * focus to the widget.  Please note that editing can only happen when the
9024  * widget is realized.
9025  **/
9026 void
9027 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
9028                           GtkTreePath       *path,
9029                           GtkTreeViewColumn *focus_column,
9030                           gboolean           start_editing)
9031 {
9032   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9033   g_return_if_fail (path != NULL);
9034   if (focus_column)
9035     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (focus_column));
9036
9037   gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
9038
9039   if (focus_column && focus_column->visible)
9040     {
9041       GList *list;
9042       gboolean column_in_tree = FALSE;
9043
9044       for (list = tree_view->priv->columns; list; list = list->next)
9045         if (list->data == focus_column)
9046           {
9047             column_in_tree = TRUE;
9048             break;
9049           }
9050       g_return_if_fail (column_in_tree);
9051       tree_view->priv->focus_column = focus_column;
9052       if (start_editing)
9053         gtk_tree_view_start_editing (tree_view, path);
9054     }
9055 }
9056
9057
9058 /**
9059  * gtk_tree_view_get_bin_window:
9060  * @tree_view: A #GtkTreeView
9061  *
9062  * Returns the window that @tree_view renders to.  This is used primarily to
9063  * compare to <literal>event->window</literal> to confirm that the event on
9064  * @tree_view is on the right window.
9065  *
9066  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
9067  **/
9068 GdkWindow *
9069 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
9070 {
9071   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9072
9073   return tree_view->priv->bin_window;
9074 }
9075
9076 /**
9077  * gtk_tree_view_get_path_at_pos:
9078  * @tree_view: A #GtkTreeView.
9079  * @x: The x position to be identified.
9080  * @y: The y position to be identified.
9081  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
9082  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
9083  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
9084  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
9085  *
9086  * Finds the path at the point (@x, @y), relative to widget coordinates.  That
9087  * is, @x and @y are relative to an events coordinates. @x and @y must come
9088  * from an event on the @tree_view only where event->window ==
9089  * gtk_tree_view_get_bin (). It is primarily for things like popup menus.
9090  * If @path is non-%NULL, then it will be filled with the #GtkTreePath at that
9091  * point.  This path should be freed with gtk_tree_path_free().  If @column
9092  * is non-%NULL, then it will be filled with the column at that point.
9093  * @cell_x and @cell_y return the coordinates relative to the cell background
9094  * (i.e. the @background_area passed to gtk_cell_renderer_render()).  This
9095  * function is only meaningful if @tree_view is realized.
9096  *
9097  * Return value: %TRUE if a row exists at that coordinate.
9098  **/
9099 gboolean
9100 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
9101                                gint                x,
9102                                gint                y,
9103                                GtkTreePath       **path,
9104                                GtkTreeViewColumn **column,
9105                                gint               *cell_x,
9106                                gint               *cell_y)
9107 {
9108   GtkRBTree *tree;
9109   GtkRBNode *node;
9110   gint y_offset;
9111
9112   g_return_val_if_fail (tree_view != NULL, FALSE);
9113   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
9114
9115   if (path)
9116     *path = NULL;
9117   if (column)
9118     *column = NULL;
9119
9120   if (tree_view->priv->tree == NULL)
9121     return FALSE;
9122
9123   if (x > tree_view->priv->hadjustment->page_size)
9124     return FALSE;
9125
9126   if (x < 0 || y < 0)
9127     return FALSE;
9128
9129   if (column || cell_x)
9130     {
9131       GtkTreeViewColumn *tmp_column;
9132       GtkTreeViewColumn *last_column = NULL;
9133       GList *list;
9134       gint remaining_x = x;
9135       gboolean found = FALSE;
9136
9137       for (list = tree_view->priv->columns; list; list = list->next)
9138         {
9139           tmp_column = list->data;
9140
9141           if (tmp_column->visible == FALSE)
9142             continue;
9143
9144           last_column = tmp_column;
9145           if (remaining_x <= tmp_column->width)
9146             {
9147               found = TRUE;
9148
9149               if (column)
9150                 *column = tmp_column;
9151
9152               if (cell_x)
9153                 *cell_x = remaining_x;
9154
9155               break;
9156             }
9157           remaining_x -= tmp_column->width;
9158         }
9159
9160       if (!found)
9161         {
9162           if (column)
9163             *column = last_column;
9164
9165           if (cell_x)
9166             *cell_x = last_column->width + remaining_x;
9167         }
9168     }
9169
9170   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
9171                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
9172                                       &tree, &node);
9173
9174   if (tree == NULL)
9175     return FALSE;
9176
9177   if (cell_y)
9178     *cell_y = y_offset;
9179
9180   if (path)
9181     *path = _gtk_tree_view_find_path (tree_view, tree, node);
9182
9183   return TRUE;
9184 }
9185
9186
9187 /**
9188  * gtk_tree_view_get_cell_area:
9189  * @tree_view: a #GtkTreeView
9190  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
9191  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
9192  * @rect: rectangle to fill with cell rect
9193  *
9194  * Fills the bounding rectangle in tree window coordinates for the cell at the
9195  * row specified by @path and the column specified by @column.  If @path is
9196  * %NULL, or points to a path not currently displayed, the @y and @height fields
9197  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
9198  * fields will be filled with 0.  The sum of all cell rects does not cover the
9199  * entire tree; there are extra pixels in between rows, for example. The
9200  * returned rectangle is equivalent to the @cell_area passed to
9201  * gtk_cell_renderer_render().  This function is only valid if #tree_view is
9202  * realized.
9203  **/
9204 void
9205 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
9206                              GtkTreePath        *path,
9207                              GtkTreeViewColumn  *column,
9208                              GdkRectangle       *rect)
9209 {
9210   GtkRBTree *tree = NULL;
9211   GtkRBNode *node = NULL;
9212   gint vertical_separator;
9213   gint horizontal_separator;
9214
9215   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9216   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
9217   g_return_if_fail (rect != NULL);
9218   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
9219   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
9220
9221   gtk_widget_style_get (GTK_WIDGET (tree_view),
9222                         "vertical_separator", &vertical_separator,
9223                         "horizontal_separator", &horizontal_separator,
9224                         NULL);
9225
9226   rect->x = 0;
9227   rect->y = 0;
9228   rect->width = 0;
9229   rect->height = 0;
9230
9231   if (column)
9232     {
9233       rect->x = column->button->allocation.x + horizontal_separator/2;
9234       rect->width = column->button->allocation.width - horizontal_separator;
9235     }
9236
9237   if (path)
9238     {
9239       /* Get vertical coords */
9240       if (_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
9241           tree != NULL)
9242         return;
9243
9244       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9245       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
9246
9247       if (gtk_tree_view_is_expander_column (tree_view, column) &&
9248           TREE_VIEW_DRAW_EXPANDERS (tree_view))
9249         {
9250           gint depth = gtk_tree_path_get_depth (path) - 1;
9251
9252           rect->x += depth * tree_view->priv->expander_size;
9253           rect->width -= depth * tree_view->priv->expander_size;
9254           rect->width = MAX (rect->width, 0);
9255         }
9256     }
9257 }
9258
9259 /**
9260  * gtk_tree_view_get_background_area:
9261  * @tree_view: a #GtkTreeView
9262  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
9263  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
9264  * @rect: rectangle to fill with cell background rect
9265  *
9266  * Fills the bounding rectangle in tree window coordinates for the cell at the
9267  * row specified by @path and the column specified by @column.  If @path is
9268  * %NULL, or points to a node not found in the tree, the @y and @height fields of
9269  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
9270  * fields will be filled with 0.  The returned rectangle is equivalent to the
9271  * @background_area passed to gtk_cell_renderer_render().  These background
9272  * areas tile to cover the entire tree window (except for the area used for
9273  * header buttons). Contrast with the @cell_area, returned by
9274  * gtk_tree_view_get_cell_area(), which returns only the cell itself, excluding
9275  * surrounding borders and the tree expander area.
9276  *
9277  **/
9278 void
9279 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
9280                                    GtkTreePath        *path,
9281                                    GtkTreeViewColumn  *column,
9282                                    GdkRectangle       *rect)
9283 {
9284   GtkRBTree *tree = NULL;
9285   GtkRBNode *node = NULL;
9286
9287   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9288   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
9289   g_return_if_fail (rect != NULL);
9290
9291   rect->x = 0;
9292   rect->y = 0;
9293   rect->width = 0;
9294   rect->height = 0;
9295
9296   if (path)
9297     {
9298       /* Get vertical coords */
9299
9300       if (_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
9301           tree != NULL)
9302         return;
9303
9304       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9305
9306       rect->height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
9307     }
9308
9309   if (column)
9310     {
9311       gint x2 = 0;
9312
9313       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
9314       rect->width = x2 - rect->x;
9315     }
9316 }
9317
9318 /**
9319  * gtk_tree_view_get_visible_rect:
9320  * @tree_view: a #GtkTreeView
9321  * @visible_rect: rectangle to fill
9322  *
9323  * Fills @visible_rect with the currently-visible region of the
9324  * buffer, in tree coordinates. Convert to widget coordinates with
9325  * gtk_tree_view_tree_to_widget_coords(). Tree coordinates start at
9326  * 0,0 for row 0 of the tree, and cover the entire scrollable area of
9327  * the tree.
9328  **/
9329 void
9330 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
9331                                 GdkRectangle *visible_rect)
9332 {
9333   GtkWidget *widget;
9334
9335   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9336
9337   widget = GTK_WIDGET (tree_view);
9338
9339   if (visible_rect)
9340     {
9341       visible_rect->x = tree_view->priv->hadjustment->value;
9342       visible_rect->y = tree_view->priv->vadjustment->value;
9343       visible_rect->width = widget->allocation.width;
9344       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
9345     }
9346 }
9347
9348 /**
9349  * gtk_tree_view_widget_to_tree_coords:
9350  * @tree_view: a #GtkTreeView
9351  * @wx: widget X coordinate
9352  * @wy: widget Y coordinate
9353  * @tx: return location for tree X coordinate
9354  * @ty: return location for tree Y coordinate
9355  *
9356  * Converts widget coordinates to coordinates for the
9357  * tree window (the full scrollable area of the tree).
9358  *
9359  **/
9360 void
9361 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
9362                                      gint         wx,
9363                                      gint         wy,
9364                                      gint        *tx,
9365                                      gint        *ty)
9366 {
9367   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9368
9369   if (tx)
9370     *tx = wx + tree_view->priv->hadjustment->value;
9371   if (ty)
9372     *ty = wy + tree_view->priv->dy - TREE_VIEW_HEADER_HEIGHT (tree_view);
9373 }
9374
9375 /**
9376  * gtk_tree_view_tree_to_widget_coords:
9377  * @tree_view: a #GtkTreeView
9378  * @tx: tree X coordinate
9379  * @ty: tree Y coordinate
9380  * @wx: return location for widget X coordinate
9381  * @wy: return location for widget Y coordinate
9382  *
9383  * Converts tree coordinates (coordinates in full scrollable area of the tree)
9384  * to widget coordinates.
9385  *
9386  **/
9387 void
9388 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
9389                                      gint         tx,
9390                                      gint         ty,
9391                                      gint        *wx,
9392                                      gint        *wy)
9393 {
9394   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9395
9396   if (wx)
9397     *wx = tx - tree_view->priv->hadjustment->value;
9398   if (wy)
9399     *wy = ty - tree_view->priv->dy + TREE_VIEW_HEADER_HEIGHT (tree_view);
9400 }
9401
9402 static void
9403 unset_reorderable (GtkTreeView *tree_view)
9404 {
9405   if (tree_view->priv->reorderable)
9406     {
9407       tree_view->priv->reorderable = FALSE;
9408       g_object_notify (G_OBJECT (tree_view), "reorderable");
9409     }
9410 }
9411
9412 void
9413 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
9414                                         GdkModifierType           start_button_mask,
9415                                         const GtkTargetEntry     *targets,
9416                                         gint                      n_targets,
9417                                         GdkDragAction             actions)
9418 {
9419   TreeViewDragInfo *di;
9420
9421   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9422
9423   di = ensure_info (tree_view);
9424   clear_source_info (di);
9425
9426   di->start_button_mask = start_button_mask;
9427   di->source_target_list = gtk_target_list_new (targets, n_targets);
9428   di->source_actions = actions;
9429
9430   di->source_set = TRUE;
9431
9432   unset_reorderable (tree_view);
9433 }
9434
9435 void
9436 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
9437                                       const GtkTargetEntry     *targets,
9438                                       gint                      n_targets,
9439                                       GdkDragAction             actions)
9440 {
9441   TreeViewDragInfo *di;
9442
9443   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9444
9445   gtk_drag_dest_set (GTK_WIDGET (tree_view),
9446                      0,
9447                      NULL,
9448                      0,
9449                      actions);
9450
9451   di = ensure_info (tree_view);
9452   clear_dest_info (di);
9453
9454   if (targets)
9455     di->dest_target_list = gtk_target_list_new (targets, n_targets);
9456
9457   di->dest_set = TRUE;
9458
9459   unset_reorderable (tree_view);
9460 }
9461
9462 void
9463 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
9464 {
9465   TreeViewDragInfo *di;
9466
9467   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9468
9469   di = get_info (tree_view);
9470
9471   if (di)
9472     {
9473       if (di->source_set)
9474         {
9475           clear_source_info (di);
9476           di->source_set = FALSE;
9477         }
9478
9479       if (!di->dest_set && !di->source_set)
9480         remove_info (tree_view);
9481     }
9482
9483   unset_reorderable (tree_view);
9484 }
9485
9486 void
9487 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
9488 {
9489   TreeViewDragInfo *di;
9490
9491   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9492
9493   di = get_info (tree_view);
9494
9495   if (di)
9496     {
9497       if (di->dest_set)
9498         {
9499           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
9500           clear_dest_info (di);
9501           di->dest_set = FALSE;
9502         }
9503
9504       if (!di->dest_set && !di->source_set)
9505         remove_info (tree_view);
9506     }
9507
9508   unset_reorderable (tree_view);
9509 }
9510
9511 void
9512 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
9513                                  GtkTreePath            *path,
9514                                  GtkTreeViewDropPosition pos)
9515 {
9516   GtkTreePath *current_dest;
9517   /* Note; this function is exported to allow a custom DND
9518    * implementation, so it can't touch TreeViewDragInfo
9519    */
9520
9521   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9522
9523   current_dest = NULL;
9524
9525   if (tree_view->priv->drag_dest_row)
9526     current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
9527
9528   if (tree_view->priv->drag_dest_row)
9529     gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
9530
9531   tree_view->priv->drag_dest_pos = pos;
9532
9533   if (path)
9534     {
9535       tree_view->priv->drag_dest_row =
9536         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
9537       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
9538     }
9539   else
9540     tree_view->priv->drag_dest_row = NULL;
9541
9542   if (current_dest)
9543     {
9544       GtkRBTree *tree, *new_tree;
9545       GtkRBNode *node, *new_node;
9546
9547       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
9548       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
9549
9550       if (tree && node)
9551         {
9552           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
9553           if (new_tree && new_node)
9554             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
9555
9556           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
9557           if (new_tree && new_node)
9558             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
9559         }
9560       gtk_tree_path_free (current_dest);
9561     }
9562 }
9563
9564 void
9565 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
9566                                  GtkTreePath             **path,
9567                                  GtkTreeViewDropPosition  *pos)
9568 {
9569   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9570
9571   if (path)
9572     {
9573       if (tree_view->priv->drag_dest_row)
9574         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
9575       else
9576         *path = NULL;
9577     }
9578
9579   if (pos)
9580     *pos = tree_view->priv->drag_dest_pos;
9581 }
9582
9583 gboolean
9584 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
9585                                    gint                     drag_x,
9586                                    gint                     drag_y,
9587                                    GtkTreePath            **path,
9588                                    GtkTreeViewDropPosition *pos)
9589 {
9590   gint cell_y;
9591   gdouble offset_into_row;
9592   gdouble third;
9593   GdkRectangle cell;
9594   GtkTreeViewColumn *column = NULL;
9595   GtkTreePath *tmp_path = NULL;
9596
9597   /* Note; this function is exported to allow a custom DND
9598    * implementation, so it can't touch TreeViewDragInfo
9599    */
9600
9601   g_return_val_if_fail (tree_view != NULL, FALSE);
9602   g_return_val_if_fail (drag_x >= 0, FALSE);
9603   g_return_val_if_fail (drag_y >= 0, FALSE);
9604   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
9605
9606
9607   if (path)
9608     *path = NULL;
9609
9610   if (tree_view->priv->tree == NULL)
9611     return FALSE;
9612
9613   /* If in the top third of a row, we drop before that row; if
9614    * in the bottom third, drop after that row; if in the middle,
9615    * and the row has children, drop into the row.
9616    */
9617
9618   if (!gtk_tree_view_get_path_at_pos (tree_view,
9619                                       drag_x,
9620                                       drag_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
9621                                       &tmp_path,
9622                                       &column,
9623                                       NULL,
9624                                       &cell_y))
9625     return FALSE;
9626
9627   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
9628                                      &cell);
9629
9630   offset_into_row = cell_y;
9631
9632   if (path)
9633     *path = tmp_path;
9634   else
9635     gtk_tree_path_free (tmp_path);
9636
9637   tmp_path = NULL;
9638
9639   third = cell.height / 3.0;
9640
9641   if (pos)
9642     {
9643       if (offset_into_row < third)
9644         {
9645           *pos = GTK_TREE_VIEW_DROP_BEFORE;
9646         }
9647       else if (offset_into_row < (cell.height / 2.0))
9648         {
9649           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
9650         }
9651       else if (offset_into_row < third * 2)
9652         {
9653           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
9654         }
9655       else
9656         {
9657           *pos = GTK_TREE_VIEW_DROP_AFTER;
9658         }
9659     }
9660
9661   return TRUE;
9662 }
9663
9664
9665
9666 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
9667 /**
9668  * gtk_tree_view_create_row_drag_icon:
9669  * @tree_view: a #GtkTreeView
9670  * @path: a #GtkTreePath in @tree_view
9671  *
9672  * Creates a #GdkPixmap representation of the row at @path.  This image is used
9673  * for a drag icon.
9674  *
9675  * Return value: a newly-allocated pixmap of the drag icon.
9676  **/
9677 GdkPixmap *
9678 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
9679                                     GtkTreePath  *path)
9680 {
9681   GtkTreeIter   iter;
9682   GtkRBTree    *tree;
9683   GtkRBNode    *node;
9684   gint cell_offset;
9685   GList *list;
9686   GdkRectangle background_area;
9687   GdkRectangle expose_area;
9688   GtkWidget *widget;
9689   gint depth;
9690   /* start drawing inside the black outline */
9691   gint x = 1, y = 1;
9692   GdkDrawable *drawable;
9693   gint bin_window_width;
9694
9695   widget = GTK_WIDGET (tree_view);
9696
9697   depth = gtk_tree_path_get_depth (path);
9698
9699   _gtk_tree_view_find_node (tree_view,
9700                             path,
9701                             &tree,
9702                             &node);
9703
9704   if (tree == NULL)
9705     return NULL;
9706
9707   if (!gtk_tree_model_get_iter (tree_view->priv->model,
9708                                 &iter,
9709                                 path))
9710     return NULL;
9711
9712   cell_offset = x;
9713
9714   background_area.y = y;
9715   background_area.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
9716
9717   gdk_drawable_get_size (tree_view->priv->bin_window,
9718                          &bin_window_width, NULL);
9719
9720   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
9721                              bin_window_width + 2,
9722                              background_area.height + 2,
9723                              -1);
9724
9725   expose_area.x = 0;
9726   expose_area.y = 0;
9727   expose_area.width = bin_window_width + 2;
9728   expose_area.height = background_area.height + 2;
9729
9730   gdk_draw_rectangle (drawable,
9731                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
9732                       TRUE,
9733                       0, 0,
9734                       bin_window_width + 2,
9735                       background_area.height + 2);
9736
9737   for (list = tree_view->priv->columns; list; list = list->next)
9738     {
9739       GtkTreeViewColumn *column = list->data;
9740       GdkRectangle cell_area;
9741       gint vertical_separator;
9742
9743       if (!column->visible)
9744         continue;
9745
9746       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
9747                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
9748                                                node->children?TRUE:FALSE);
9749
9750       background_area.x = cell_offset;
9751       background_area.width = column->width;
9752
9753       cell_area = background_area;
9754
9755       gtk_widget_style_get (widget, "vertical_separator", &vertical_separator, NULL);
9756       cell_area.y += vertical_separator / 2;
9757       cell_area.height -= vertical_separator;
9758
9759       if (gtk_tree_view_is_expander_column (tree_view, column) &&
9760           TREE_VIEW_DRAW_EXPANDERS(tree_view))
9761         {
9762           cell_area.x += depth * tree_view->priv->expander_size;
9763           cell_area.width -= depth * tree_view->priv->expander_size;
9764         }
9765
9766       if (gtk_tree_view_column_cell_is_visible (column))
9767         _gtk_tree_view_column_cell_render (column,
9768                                            drawable,
9769                                            &background_area,
9770                                            &cell_area,
9771                                            &expose_area,
9772                                            0);
9773
9774       cell_offset += column->width;
9775     }
9776
9777   gdk_draw_rectangle (drawable,
9778                       widget->style->black_gc,
9779                       FALSE,
9780                       0, 0,
9781                       bin_window_width + 1,
9782                       background_area.height + 1);
9783
9784   return drawable;
9785 }
9786
9787
9788 /**
9789  * gtk_tree_view_set_destroy_count_func:
9790  * @tree_view: A #GtkTreeView
9791  * @func: Function to be called when a view row is destroyed, or %NULL
9792  * @data: User data to be passed to @func, or %NULL
9793  * @destroy: Destroy notifier for @data, or %NULL
9794  *
9795  * This function should almost never be used.  It is meant for private use by
9796  * ATK for determining the number of visible children that are removed when the
9797  * user collapses a row, or a row is deleted.
9798  **/
9799 void
9800 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
9801                                       GtkTreeDestroyCountFunc  func,
9802                                       gpointer                 data,
9803                                       GtkDestroyNotify         destroy)
9804 {
9805   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9806
9807   if (tree_view->priv->destroy_count_destroy)
9808     (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
9809
9810   tree_view->priv->destroy_count_func = func;
9811   tree_view->priv->destroy_count_data = data;
9812   tree_view->priv->destroy_count_destroy = destroy;
9813 }
9814
9815
9816 /*
9817  * Interactive search
9818  */
9819
9820 /**
9821  * gtk_tree_view_set_enable_search:
9822  * @tree_view: A #GtkTreeView
9823  * @enable_search: %TRUE, if the user can search interactively
9824  *
9825  * If @enable_search is set, then the user can type in text to search through
9826  * the tree interactively.
9827  */
9828 void
9829 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
9830                                  gboolean     enable_search)
9831 {
9832   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9833
9834   enable_search = !!enable_search;
9835
9836   if (tree_view->priv->enable_search != enable_search)
9837     {
9838        tree_view->priv->enable_search = enable_search;
9839        g_object_notify (G_OBJECT (tree_view), "enable_search");
9840     }
9841 }
9842
9843 /**
9844  * gtk_tree_view_get_enable_search:
9845  * @tree_view: A #GtkTreeView
9846  *
9847  * Returns whether or not the tree allows interactive searching.
9848  *
9849  * Return value: whether or not to let the user search interactively
9850  */
9851 gboolean
9852 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
9853 {
9854   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9855
9856   return tree_view->priv->enable_search;
9857 }
9858
9859
9860 /**
9861  * gtk_tree_view_get_search_column:
9862  * @tree_view: A #GtkTreeView
9863  *
9864  * Gets the column searched on by the interactive search code.
9865  *
9866  * Return value: the column the interactive search code searches in.
9867  */
9868 gint
9869 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
9870 {
9871   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
9872
9873   return (tree_view->priv->search_column);
9874 }
9875
9876 /**
9877  * gtk_tree_view_set_search_column:
9878  * @tree_view: A #GtkTreeView
9879  * @column: the column to search in
9880  *
9881  * Sets @column as the column where the interactive search code should search
9882  * in.  Additionally, turns on interactive searching.
9883  */
9884 void
9885 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
9886                                  gint         column)
9887 {
9888   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9889   g_return_if_fail (column >= 0);
9890
9891   if (tree_view->priv->search_column == column)
9892     return;
9893
9894   tree_view->priv->search_column = column;
9895   g_object_notify (G_OBJECT (tree_view), "search_column");
9896 }
9897
9898 /**
9899  * gtk_tree_view_search_get_search_equal_func:
9900  * @tree_view: A #GtkTreeView
9901  *
9902  * Returns the compare function currently in use.
9903  *
9904  * Return value: the currently used compare function for the search code.
9905  */
9906
9907 GtkTreeViewSearchEqualFunc
9908 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
9909 {
9910   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9911
9912   return tree_view->priv->search_equal_func;
9913 }
9914
9915 /**
9916  * gtk_tree_view_set_search_equal_func:
9917  * @tree_view: A #GtkTreeView
9918  * @search_equal_func: the compare function to use during the search
9919  * @search_user_data: user data to pass to @search_equal_func, or %NULL
9920  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
9921  *
9922  * Sets the compare function for the interactive search capabilities.
9923  **/
9924 void
9925 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
9926                                      GtkTreeViewSearchEqualFunc  search_equal_func,
9927                                      gpointer                    search_user_data,
9928                                      GtkDestroyNotify            search_destroy)
9929 {
9930   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9931   g_return_if_fail (search_equal_func !=NULL);
9932
9933   if (tree_view->priv->search_destroy)
9934     (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
9935
9936   tree_view->priv->search_equal_func = search_equal_func;
9937   tree_view->priv->search_user_data = search_user_data;
9938   tree_view->priv->search_destroy = search_destroy;
9939   if (tree_view->priv->search_equal_func == NULL)
9940     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
9941 }
9942
9943 static void
9944 gtk_tree_view_search_dialog_destroy (GtkWidget   *search_dialog,
9945                                      GtkTreeView *tree_view)
9946 {
9947   GtkEntry *entry = (GtkEntry *)(gtk_container_get_children (GTK_CONTAINER (search_dialog)))->data;
9948   gint *selected_iter;
9949
9950   if (tree_view->priv->disable_popdown)
9951     return;
9952
9953   if (entry)
9954     {
9955       GdkEventFocus focus_event;
9956
9957       focus_event.type = GDK_FOCUS_CHANGE;
9958       focus_event.in = FALSE;
9959       gtk_widget_event (GTK_WIDGET (entry), (GdkEvent *) &focus_event);
9960     }
9961
9962   /* remove data from tree_view */
9963   g_object_set_data (G_OBJECT (tree_view), GTK_TREE_VIEW_SEARCH_DIALOG_KEY,
9964                      NULL);
9965
9966   selected_iter = g_object_get_data (G_OBJECT (search_dialog),
9967                                      "gtk-tree-view-selected-iter");
9968   if (selected_iter)
9969     g_free (selected_iter);
9970   g_object_set_data (G_OBJECT (search_dialog), "gtk-tree-view-selected-iter",
9971                      NULL);
9972
9973   gtk_widget_destroy (search_dialog);
9974 }
9975
9976 static void
9977 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
9978                                     GtkWidget   *search_dialog)
9979 {
9980   gint x, y;
9981   gint tree_x, tree_y;
9982   gint tree_width, tree_height;
9983   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
9984   GtkRequisition requisition;
9985
9986   gtk_widget_realize (search_dialog);
9987
9988   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
9989   gdk_window_get_size (tree_window,
9990                        &tree_width,
9991                        &tree_height);
9992   gtk_widget_size_request (search_dialog, &requisition);
9993
9994   if (tree_x + tree_width - requisition.width > gdk_screen_width ())
9995     x = gdk_screen_width () - requisition.width;
9996   else if (tree_x + tree_width - requisition.width < 0)
9997     x = 0;
9998   else
9999     x = tree_x + tree_width - requisition.width;
10000
10001   if (tree_y + tree_height > gdk_screen_height ())
10002     y = gdk_screen_height () - requisition.height;
10003   else if (tree_y + tree_height < 0) /* isn't really possible ... */
10004     y = 0;
10005   else
10006     y = tree_y + tree_height;
10007
10008   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
10009 }
10010
10011 static void
10012 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
10013                                       GtkMenu  *menu,
10014                                       gpointer  data)
10015 {
10016   GtkTreeView *tree_view = (GtkTreeView *)data;
10017
10018   tree_view->priv->disable_popdown = 1;
10019   g_signal_connect (G_OBJECT (menu), "hide",
10020                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
10021 }
10022
10023 static gboolean
10024 gtk_tree_view_real_search_enable_popdown (gpointer data)
10025 {
10026   GtkTreeView *tree_view = (GtkTreeView *)data;
10027
10028   GDK_THREADS_ENTER ();
10029
10030   tree_view->priv->disable_popdown = 0;
10031
10032   GDK_THREADS_LEAVE ();
10033
10034   return FALSE;
10035 }
10036
10037 static void
10038 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
10039                                      gpointer   data)
10040 {
10041   g_timeout_add (200, gtk_tree_view_real_search_enable_popdown, data);
10042 }
10043
10044 static gboolean
10045 gtk_tree_view_search_delete_event (GtkWidget *widget,
10046                                    GdkEventAny *event,
10047                                    GtkTreeView *tree_view)
10048 {
10049   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10050
10051   gtk_tree_view_search_dialog_destroy (widget, tree_view);
10052
10053   return TRUE;
10054 }
10055
10056 static gboolean
10057 gtk_tree_view_search_button_press_event (GtkWidget *widget,
10058                                          GdkEventButton *event,
10059                                          GtkTreeView *tree_view)
10060 {
10061   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10062
10063   gtk_tree_view_search_dialog_destroy (widget, tree_view);
10064
10065   return TRUE;
10066 }
10067
10068 static gboolean
10069 gtk_tree_view_search_key_press_event (GtkWidget *widget,
10070                                       GdkEventKey *event,
10071                                       GtkTreeView *tree_view)
10072 {
10073   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10074   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10075
10076   /* close window */
10077   if (event->keyval == GDK_Escape ||
10078       event->keyval == GDK_Return ||
10079       event->keyval == GDK_Tab)
10080     {
10081       gtk_tree_view_search_dialog_destroy (widget, tree_view);
10082       return TRUE;
10083     }
10084
10085   /* select previous matching iter */
10086   if (event->keyval == GDK_Up)
10087     {
10088       gtk_tree_view_search_move (widget, tree_view, TRUE);
10089       return TRUE;
10090     }
10091
10092   /* select next matching iter */
10093   if (event->keyval == GDK_Down)
10094     {
10095       gtk_tree_view_search_move (widget, tree_view, FALSE);
10096       return TRUE;
10097     }
10098
10099   return FALSE;
10100 }
10101
10102 static void
10103 gtk_tree_view_search_move (GtkWidget   *window,
10104                            GtkTreeView *tree_view,
10105                            gboolean     up)
10106 {
10107   gboolean ret;
10108   gint *selected_iter;
10109   gint len;
10110   gint count = 0;
10111   gchar *text;
10112   GtkTreeIter iter;
10113   GtkTreeModel *model;
10114   GtkTreeSelection *selection;
10115
10116   text = g_object_get_data (G_OBJECT (window), "gtk-tree-view-text");
10117   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
10118
10119   g_return_if_fail (text != NULL);
10120
10121   if (!selected_iter || (up && *selected_iter == 1))
10122     return;
10123
10124   len = strlen (text);
10125
10126   if (len < 1)
10127     return;
10128
10129   model = gtk_tree_view_get_model (tree_view);
10130   selection = gtk_tree_view_get_selection (tree_view);
10131
10132   /* search */
10133   gtk_tree_selection_unselect_all (selection);
10134   gtk_tree_model_get_iter_first (model, &iter);
10135
10136   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
10137                                    &count, up?((*selected_iter) - 1):((*selected_iter + 1)));
10138
10139   if (ret)
10140     {
10141       /* found */
10142       *selected_iter += up?(-1):(1);
10143     }
10144   else
10145     {
10146       /* return to old iter */
10147       count = 0;
10148       gtk_tree_model_get_iter_first (model, &iter);
10149       gtk_tree_view_search_iter (model, selection,
10150                                  &iter, text,
10151                                  &count, *selected_iter);
10152     }
10153 }
10154
10155 static gboolean
10156 gtk_tree_view_search_equal_func (GtkTreeModel *model,
10157                                  gint          column,
10158                                  const gchar  *key,
10159                                  GtkTreeIter  *iter,
10160                                  gpointer      search_data)
10161 {
10162   gboolean retval = TRUE;
10163   gchar *normalized_string;
10164   gchar *normalized_key;
10165   gchar *case_normalized_string;
10166   gchar *case_normalized_key;
10167   GValue value = {0,};
10168   gint key_len;
10169
10170   gtk_tree_model_get_value (model, iter, column, &value);
10171   normalized_string = g_utf8_normalize (g_value_get_string (&value), -1, G_NORMALIZE_ALL);
10172   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
10173   case_normalized_string = g_utf8_casefold (normalized_string, -1);
10174   case_normalized_key = g_utf8_casefold (normalized_key, -1);
10175
10176   key_len = strlen (case_normalized_key);
10177
10178   if (!strncmp (case_normalized_key, case_normalized_string, key_len))
10179     retval = FALSE;
10180
10181   g_value_unset (&value);
10182   g_free (normalized_key);
10183   g_free (normalized_string);
10184   g_free (case_normalized_key);
10185   g_free (case_normalized_string);
10186
10187   return retval;
10188 }
10189
10190 static gboolean
10191 gtk_tree_view_search_iter (GtkTreeModel     *model,
10192                            GtkTreeSelection *selection,
10193                            GtkTreeIter      *iter,
10194                            const gchar      *text,
10195                            gint             *count,
10196                            gint              n)
10197 {
10198   GtkRBTree *tree = NULL;
10199   GtkRBNode *node = NULL;
10200   GtkTreePath *path;
10201
10202   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
10203   GtkTreeViewColumn *column =
10204     gtk_tree_view_get_column (tree_view, tree_view->priv->search_column);
10205
10206   path = gtk_tree_model_get_path (model, iter);
10207   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10208
10209   do
10210     {
10211       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
10212         {
10213           (*count)++;
10214           if (*count == n)
10215             {
10216               gtk_tree_view_scroll_to_cell (tree_view, path, column,
10217                                             TRUE, 0.5, 0.5);
10218               gtk_tree_selection_select_iter (selection, iter);
10219               gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
10220
10221               if (path)
10222                 gtk_tree_path_free (path);
10223
10224               return TRUE;
10225             }
10226         }
10227
10228       if (node->children)
10229         {
10230           gboolean has_child;
10231           GtkTreeIter tmp;
10232
10233           tree = node->children;
10234           node = tree->root;
10235
10236           while (node->left != tree->nil)
10237             node = node->left;
10238
10239           tmp = *iter;
10240           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
10241           gtk_tree_path_down (path);
10242
10243           /* sanity check */
10244           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
10245         }
10246       else
10247         {
10248           gboolean done = FALSE;
10249
10250           do
10251             {
10252               node = _gtk_rbtree_next (tree, node);
10253
10254               if (node)
10255                 {
10256                   gboolean has_next;
10257
10258                   has_next = gtk_tree_model_iter_next (model, iter);
10259
10260                   done = TRUE;
10261                   gtk_tree_path_next (path);
10262
10263                   /* sanity check */
10264                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
10265                 }
10266               else
10267                 {
10268                   gboolean has_parent;
10269                   GtkTreeIter tmp_iter = *iter;
10270
10271                   node = tree->parent_node;
10272                   tree = tree->parent_tree;
10273
10274                   if (!tree)
10275                     {
10276                       if (path)
10277                         gtk_tree_path_free (path);
10278
10279                       /* we've run out of tree, done with this func */
10280                       return FALSE;
10281                     }
10282
10283                   has_parent = gtk_tree_model_iter_parent (model,
10284                                                            iter,
10285                                                            &tmp_iter);
10286                   gtk_tree_path_up (path);
10287
10288                   /* sanity check */
10289                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
10290                 }
10291             }
10292           while (!done);
10293         }
10294     }
10295   while (1);
10296
10297   if (path)
10298     gtk_tree_path_free (path);
10299
10300   return FALSE;
10301 }
10302
10303 static void
10304 gtk_tree_view_search_init (GtkWidget   *entry,
10305                            GtkTreeView *tree_view)
10306 {
10307   gint ret;
10308   gint *selected_iter;
10309   gint len;
10310   gint count = 0;
10311   const gchar *text;
10312   GtkWidget *window;
10313   GtkTreeIter iter;
10314   GtkTreeModel *model;
10315   GtkTreeSelection *selection;
10316
10317   g_return_if_fail (GTK_IS_ENTRY (entry));
10318   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10319
10320   window = gtk_widget_get_parent (entry);
10321   text = gtk_entry_get_text (GTK_ENTRY (entry));
10322   len = strlen (text);
10323   model = gtk_tree_view_get_model (tree_view);
10324   selection = gtk_tree_view_get_selection (tree_view);
10325
10326   /* search */
10327   gtk_tree_selection_unselect_all (selection);
10328   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
10329   if (selected_iter)
10330     g_free (selected_iter);
10331   g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter", NULL);
10332
10333   if (len < 1)
10334     return;
10335
10336   gtk_tree_model_get_iter_first (model, &iter);
10337
10338   ret = gtk_tree_view_search_iter (model, selection,
10339                                    &iter, text,
10340                                    &count, 1);
10341
10342   if (ret)
10343     {
10344       selected_iter = g_malloc (sizeof (int));
10345       *selected_iter = 1;
10346       g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter",
10347                          selected_iter);
10348     }
10349 }
10350
10351 static void
10352 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
10353                              GtkTreeView     *tree_view)
10354 {
10355   if (tree_view->priv->edited_column == NULL)
10356     return;
10357
10358   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
10359   tree_view->priv->edited_column = NULL;
10360
10361   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10362
10363   gtk_container_remove (GTK_CONTAINER (tree_view),
10364                         GTK_WIDGET (cell_editable));
10365 }
10366
10367 static gboolean
10368 gtk_tree_view_start_editing (GtkTreeView *tree_view,
10369                              GtkTreePath *cursor_path)
10370 {
10371   GtkTreeIter iter;
10372   GdkRectangle background_area;
10373   GdkRectangle cell_area;
10374   GtkCellEditable *editable_widget = NULL;
10375   gchar *path_string;
10376   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
10377   gint retval = FALSE;
10378   GtkRBTree *cursor_tree;
10379   GtkRBNode *cursor_node;
10380
10381   g_assert (tree_view->priv->focus_column);
10382
10383   if (! GTK_WIDGET_REALIZED (tree_view))
10384     return FALSE;
10385
10386   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
10387       cursor_node == NULL)
10388     return FALSE;
10389
10390   path_string = gtk_tree_path_to_string (cursor_path);
10391   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
10392   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10393                                            tree_view->priv->model,
10394                                            &iter,
10395                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10396                                            cursor_node->children?TRUE:FALSE);
10397   gtk_tree_view_get_background_area (tree_view,
10398                                      cursor_path,
10399                                      tree_view->priv->focus_column,
10400                                      &background_area);
10401   gtk_tree_view_get_cell_area (tree_view,
10402                                cursor_path,
10403                                tree_view->priv->focus_column,
10404                                &cell_area);
10405   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
10406                                         &editable_widget,
10407                                         NULL,
10408                                         path_string,
10409                                         &background_area,
10410                                         &cell_area,
10411                                         flags))
10412     {
10413       retval = TRUE;
10414       if (editable_widget != NULL)
10415         {
10416           gtk_tree_view_real_start_editing (tree_view,
10417                                             tree_view->priv->focus_column,
10418                                             cursor_path,
10419                                             editable_widget,
10420                                             &cell_area,
10421                                             NULL,
10422                                             flags);
10423         }
10424
10425     }
10426   g_free (path_string);
10427   return retval;
10428 }
10429
10430 static void
10431 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
10432                                   GtkTreeViewColumn *column,
10433                                   GtkTreePath       *path,
10434                                   GtkCellEditable   *cell_editable,
10435                                   GdkRectangle      *cell_area,
10436                                   GdkEvent          *event,
10437                                   guint              flags)
10438 {
10439   tree_view->priv->edited_column = column;
10440   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
10441   gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
10442   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
10443   gtk_tree_view_put (tree_view,
10444                      GTK_WIDGET (cell_editable),
10445                      cell_area->x, cell_area->y, cell_area->width, cell_area->height);
10446   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
10447                                    (GdkEvent *)event);
10448   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
10449   g_signal_connect (cell_editable, "remove_widget", G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
10450 }
10451
10452 static void
10453 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
10454                             gboolean     cancel_editing)
10455 {
10456   if (tree_view->priv->edited_column == NULL)
10457     return;
10458
10459   if (! cancel_editing)
10460     gtk_cell_editable_editing_done (tree_view->priv->edited_column->editable_widget);
10461
10462   gtk_cell_editable_remove_widget (tree_view->priv->edited_column->editable_widget);
10463 }