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