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
  39 #include <string.h>
  40 #include <gdk/gdkkeysyms.h>
  41
  42 #define GTK_TREE_VIEW_SEARCH_DIALOG_KEY "gtk-tree-view-search-dialog"
  43
  44 #define SCROLL_EDGE_SIZE 15
  45 #define EXPANDER_EXTRA_PADDING 4
  46
  47 /* The "background" areas of all rows/cells add up to cover the entire tree.
  48  * The background includes all inter-row and inter-cell spacing.
  49  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  50  * i.e. just the cells, no spacing.
  51  */
  52
  53 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  54 #define CELL_HEIGHT(node, separator) (BACKGROUND_HEIGHT (node) - separator);
  55
  56 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) - TREE_VIEW_HEADER_HEIGHT (tree_view) + tree_view->priv->dy)
  57 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) + TREE_VIEW_HEADER_HEIGHT (tree_view) - tree_view->priv->dy)
  58
  59 /* This is in Window coordinates */
  60 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  61 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  62
  63
  64 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  65 struct _GtkTreeViewChild
  66 {
  67   GtkWidget *widget;
  68   gint x;
  69   gint y;
  70   gint width;
  71   gint height;
  72 };
  73
  74
  75 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  76 struct _TreeViewDragInfo
  77 {
  78   GdkModifierType start_button_mask;
  79   GtkTargetList *source_target_list;
  80   GdkDragAction source_actions;
  81
  82   GtkTargetList *dest_target_list;
  83
  84   guint source_set : 1;
  85   guint dest_set : 1;
  86 };
  87
  88
  89 /* Signals */
  90 enum
  91 {
  92   ROW_ACTIVATED,
  93   TEST_EXPAND_ROW,
  94   TEST_COLLAPSE_ROW,
  95   ROW_EXPANDED,
  96   ROW_COLLAPSED,
  97   COLUMNS_CHANGED,
  98   CURSOR_CHANGED,
  99   MOVE_CURSOR,
 100   SELECT_ALL,
 101   SELECT_CURSOR_ROW,
 102   TOGGLE_CURSOR_ROW,
 103   EXPAND_COLLAPSE_CURSOR_ROW,
 104   SELECT_CURSOR_PARENT,
 105   START_INTERACTIVE_SEARCH,
 106   LAST_SIGNAL
 107 };
 108
 109 /* Properties */
 110 enum {
 111   PROP_0,
 112   PROP_MODEL,
 113   PROP_HADJUSTMENT,
 114   PROP_VADJUSTMENT,
 115   PROP_HEADERS_VISIBLE,
 116   PROP_HEADERS_CLICKABLE,
 117   PROP_EXPANDER_COLUMN,
 118   PROP_REORDERABLE,
 119   PROP_RULES_HINT,
 120   PROP_ENABLE_SEARCH,
 121   PROP_SEARCH_COLUMN,
 122 };
 123
 124 static void     gtk_tree_view_class_init           (GtkTreeViewClass *klass);
 125 static void     gtk_tree_view_init                 (GtkTreeView      *tree_view);
 126
 127 /* object signals */
 128 static void     gtk_tree_view_finalize             (GObject          *object);
 129 static void     gtk_tree_view_set_property         (GObject         *object,
 130                                                     guint            prop_id,
 131                                                     const GValue    *value,
 132                                                     GParamSpec      *pspec);
 133 static void     gtk_tree_view_get_property         (GObject         *object,
 134                                                     guint            prop_id,
 135                                                     GValue          *value,
 136                                                     GParamSpec      *pspec);
 137
 138 /* gtkobject signals */
 139 static void     gtk_tree_view_destroy              (GtkObject        *object);
 140
 141 /* gtkwidget signals */
 142 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 143 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 144 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 145 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 146                                                     GtkRequisition   *requisition);
 147 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 148                                                     GtkAllocation    *allocation);
 149 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 150                                                     GdkEventExpose   *event);
 151 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 152                                                     GdkEventKey      *event);
 153 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 154                                                     GdkEventMotion   *event);
 155 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 156                                                     GdkEventCrossing *event);
 157 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 158                                                     GdkEventCrossing *event);
 159 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 160                                                     GdkEventButton   *event);
 161 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 162                                                     GdkEventButton   *event);
 163 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 164                                                     GtkWidget        *child);
 165 static gint     gtk_tree_view_focus_in             (GtkWidget        *widget,
 166                                                     GdkEventFocus    *event);
 167 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 168                                                     GdkEventFocus    *event);
 169 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 170                                                     GtkDirectionType  direction);
 171
 172 /* container signals */
 173 static void     gtk_tree_view_remove               (GtkContainer     *container,
 174                                                     GtkWidget        *widget);
 175 static void     gtk_tree_view_forall               (GtkContainer     *container,
 176                                                     gboolean          include_internals,
 177                                                     GtkCallback       callback,
 178                                                     gpointer          callback_data);
 179
 180 /* Source side drag signals */
 181 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 182                                             GdkDragContext   *context);
 183 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 184                                             GdkDragContext   *context);
 185 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 186                                             GdkDragContext   *context,
 187                                             GtkSelectionData *selection_data,
 188                                             guint             info,
 189                                             guint             time);
 190 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 191                                             GdkDragContext   *context);
 192
 193 /* Target side drag signals */
 194 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 195                                                   GdkDragContext   *context,
 196                                                   guint             time);
 197 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 198                                                   GdkDragContext   *context,
 199                                                   gint              x,
 200                                                   gint              y,
 201                                                   guint             time);
 202 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 203                                                   GdkDragContext   *context,
 204                                                   gint              x,
 205                                                   gint              y,
 206                                                   guint             time);
 207 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 208                                                   GdkDragContext   *context,
 209                                                   gint              x,
 210                                                   gint              y,
 211                                                   GtkSelectionData *selection_data,
 212                                                   guint             info,
 213                                                   guint             time);
 214
 215 /* tree_model signals */
 216 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 217                                                            GtkAdjustment   *hadj,
 218                                                            GtkAdjustment   *vadj);
 219 static void gtk_tree_view_real_move_cursor                (GtkTreeView     *tree_view,
 220                                                            GtkMovementStep  step,
 221                                                            gint             count);
 222 static void gtk_tree_view_real_select_all                 (GtkTreeView     *tree_view);
 223 static void gtk_tree_view_real_select_cursor_row          (GtkTreeView     *tree_view,
 224                                                            gboolean         start_editing);
 225 static void gtk_tree_view_real_toggle_cursor_row          (GtkTreeView     *tree_view);
 226 static void gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 227                                                            gboolean         logical,
 228                                                            gboolean         expand,
 229                                                            gboolean         open_all);
 230 static void gtk_tree_view_real_select_cursor_parent       (GtkTreeView     *tree_view);
 231 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 232                                                            GtkTreePath     *path,
 233                                                            GtkTreeIter     *iter,
 234                                                            gpointer         data);
 235 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 236                                                            GtkTreePath     *path,
 237                                                            GtkTreeIter     *iter,
 238                                                            gpointer         data);
 239 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 240                                                            GtkTreePath     *path,
 241                                                            GtkTreeIter     *iter,
 242                                                            gpointer         data);
 243 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 244                                                            GtkTreePath     *path,
 245                                                            gpointer         data);
 246 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 247                                                            GtkTreePath     *parent,
 248                                                            GtkTreeIter     *iter,
 249                                                            gint            *new_order,
 250                                                            gpointer         data);
 251
 252
 253
 254 /* Internal functions */
 255 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView       *tree_view,
 256                                                               GtkTreeViewColumn *column);
 257 static void     gtk_tree_view_add_move_binding               (GtkBindingSet     *binding_set,
 258                                                               guint              keyval,
 259                                                               guint              modmask,
 260                                                               GtkMovementStep    step,
 261                                                               gint               count);
 262 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView       *tree_view,
 263                                                               GtkRBTree         *tree);
 264 static void     gtk_tree_view_queue_draw_node                (GtkTreeView       *tree_view,
 265                                                               GtkRBTree         *tree,
 266                                                               GtkRBNode         *node,
 267                                                               GdkRectangle      *clip_rect);
 268 static void     gtk_tree_view_queue_draw_path                (GtkTreeView       *tree_view,
 269                                                               GtkTreePath       *path,
 270                                                               GdkRectangle      *clip_rect);
 271 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView       *tree_view,
 272                                                               GtkRBTree         *tree,
 273                                                               GtkRBNode         *node,
 274                                                               GdkRectangle      *clip_rect);
 275 static void     gtk_tree_view_draw_arrow                     (GtkTreeView       *tree_view,
 276                                                               GtkRBTree         *tree,
 277                                                               GtkRBNode         *node,
 278                                                               gint               x,
 279                                                               gint               y);
 280 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView       *tree_view,
 281                                                               GtkRBTree         *tree,
 282                                                               gint              *x1,
 283                                                               gint              *x2);
 284 static gint     gtk_tree_view_new_column_width               (GtkTreeView       *tree_view,
 285                                                               gint               i,
 286                                                               gint              *x);
 287 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment     *adjustment,
 288                                                               GtkTreeView       *tree_view);
 289 static gint     gtk_tree_view_insert_iter_height             (GtkTreeView       *tree_view,
 290                                                               GtkRBTree         *tree,
 291                                                               GtkTreeIter       *iter,
 292                                                               gint               depth);
 293 static void     gtk_tree_view_build_tree                     (GtkTreeView       *tree_view,
 294                                                               GtkRBTree         *tree,
 295                                                               GtkTreeIter       *iter,
 296                                                               gint               depth,
 297                                                               gboolean           recurse,
 298                                                               gboolean           calc_bounds);
 299 static void     gtk_tree_view_calc_size                      (GtkTreeView       *priv,
 300                                                               GtkRBTree         *tree,
 301                                                               GtkTreeIter       *iter,
 302                                                               gint               depth);
 303 static gboolean gtk_tree_view_discover_dirty_iter            (GtkTreeView       *tree_view,
 304                                                               GtkTreeIter       *iter,
 305                                                               gint               depth,
 306                                                               gint              *height,
 307                                                               GtkRBNode         *node);
 308 static void     gtk_tree_view_discover_dirty                 (GtkTreeView       *tree_view,
 309                                                               GtkRBTree         *tree,
 310                                                               GtkTreeIter       *iter,
 311                                                               gint               depth);
 312 static void     gtk_tree_view_check_dirty_and_clean          (GtkTreeView       *tree_view);
 313 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView       *tree_view,
 314                                                               GtkRBTree         *tree,
 315                                                               GtkRBNode         *node);
 316 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView       *tree_view,
 317                                                               GtkTreeViewColumn *column);
 318 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView       *tree_view,
 319                                                               GdkEventMotion    *event);
 320 static void     _gtk_tree_view_update_col_width              (GtkTreeView       *tree_view);
 321 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView       *tree_view);
 322 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView       *tree_view,
 323                                                               gint               count);
 324 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView       *tree_view,
 325                                                               gint               count);
 326 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView       *tree_view,
 327                                                               gint               count);
 328 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView       *tree_view,
 329                                                               gint               count);
 330 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView       *tree_view,
 331                                                               GtkTreePath       *path,
 332                                                               GtkRBTree         *tree,
 333                                                               GtkRBNode         *node,
 334                                                               gboolean           animate);
 335 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView       *tree_view,
 336                                                               GtkTreePath       *path,
 337                                                               GtkRBTree         *tree,
 338                                                               GtkRBNode         *node,
 339                                                               gboolean           open_all,
 340                                                               gboolean           animate);
 341 static void     gtk_tree_view_real_set_cursor                (GtkTreeView       *tree_view,
 342                                                               GtkTreePath       *path,
 343                                                               gboolean           clear_and_select);
 344
 345 /* interactive search */
 346 static void     gtk_tree_view_search_dialog_destroy     (GtkWidget        *search_dialog,
 347                                                          GtkTreeView      *tree_view);
 348 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 349                                                          GtkWidget        *search_dialog);
 350 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 351                                                          GdkEventAny      *event,
 352                                                          GtkTreeView      *tree_view);
 353 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 354                                                          GdkEventButton   *event,
 355                                                          GtkTreeView      *tree_view);
 356 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 357                                                          GdkEventKey      *event,
 358                                                          GtkTreeView      *tree_view);
 359 static void     gtk_tree_view_search_move               (GtkWidget        *window,
 360                                                          GtkTreeView      *tree_view,
 361                                                          gboolean          up);
 362 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 363                                                          gint              column,
 364                                                          const gchar      *key,
 365                                                          GtkTreeIter      *iter,
 366                                                          gpointer          search_data);
 367 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 368                                                          GtkTreeSelection *selection,
 369                                                          GtkTreeIter      *iter,
 370                                                          const gchar      *text,
 371                                                          gint             *count,
 372                                                          gint              n);
 373 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 374                                                          GtkTreeView      *tree_view);
 375 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 376                                                          GtkWidget        *child_widget,
 377                                                          gint              x,
 378                                                          gint              y,
 379                                                          gint              width,
 380                                                          gint              height);
 381 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 382                                                          GtkTreePath      *cursor_path);
 383 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 384                                               GtkTreeViewColumn *column,
 385                                               GtkTreePath       *path,
 386                                               GtkCellEditable   *cell_editable,
 387                                               GdkRectangle      *cell_area,
 388                                               GdkEvent          *event,
 389                                               guint              flags);
 390 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view);
 391 static void gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view);
 392
 393
 394 static GtkContainerClass *parent_class = NULL;
 395 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 396
 397 \f
 398
 399 /* GType Methods
 400  */
 401
 402 GtkType
 403 gtk_tree_view_get_type (void)
 404 {
 405   static GtkType tree_view_type = 0;
 406
 407   if (!tree_view_type)
 408     {
 409       static const GTypeInfo tree_view_info =
 410       {
 411         sizeof (GtkTreeViewClass),
 412         NULL,           /* base_init */
 413         NULL,           /* base_finalize */
 414         (GClassInitFunc) gtk_tree_view_class_init,
 415         NULL,           /* class_finalize */
 416         NULL,           /* class_data */
 417         sizeof (GtkTreeView),
 418         0,              /* n_preallocs */
 419         (GInstanceInitFunc) gtk_tree_view_init
 420       };
 421
 422       tree_view_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView", &tree_view_info, 0);
 423     }
 424
 425   return tree_view_type;
 426 }
 427
 428 static void
 429 gtk_tree_view_class_init (GtkTreeViewClass *class)
 430 {
 431   GObjectClass *o_class;
 432   GtkObjectClass *object_class;
 433   GtkWidgetClass *widget_class;
 434   GtkContainerClass *container_class;
 435   GtkBindingSet *binding_set;
 436
 437   parent_class = g_type_class_peek_parent (class);
 438   binding_set = gtk_binding_set_by_class (class);
 439
 440   o_class = (GObjectClass *) class;
 441   object_class = (GtkObjectClass *) class;
 442   widget_class = (GtkWidgetClass *) class;
 443   container_class = (GtkContainerClass *) class;
 444
 445   /* GObject signals */
 446   o_class->set_property = gtk_tree_view_set_property;
 447   o_class->get_property = gtk_tree_view_get_property;
 448   o_class->finalize = gtk_tree_view_finalize;
 449
 450   /* GtkObject signals */
 451   object_class->destroy = gtk_tree_view_destroy;
 452
 453   /* GtkWidget signals */
 454   widget_class->map = gtk_tree_view_map;
 455   widget_class->realize = gtk_tree_view_realize;
 456   widget_class->unrealize = gtk_tree_view_unrealize;
 457   widget_class->size_request = gtk_tree_view_size_request;
 458   widget_class->size_allocate = gtk_tree_view_size_allocate;
 459   widget_class->button_press_event = gtk_tree_view_button_press;
 460   widget_class->button_release_event = gtk_tree_view_button_release;
 461   widget_class->motion_notify_event = gtk_tree_view_motion;
 462   widget_class->expose_event = gtk_tree_view_expose;
 463   widget_class->key_press_event = gtk_tree_view_key_press;
 464   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 465   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 466   widget_class->focus_in_event = gtk_tree_view_focus_in;
 467   widget_class->focus_out_event = gtk_tree_view_focus_out;
 468   widget_class->drag_begin = gtk_tree_view_drag_begin;
 469   widget_class->drag_end = gtk_tree_view_drag_end;
 470   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 471   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 472   widget_class->drag_leave = gtk_tree_view_drag_leave;
 473   widget_class->drag_motion = gtk_tree_view_drag_motion;
 474   widget_class->drag_drop = gtk_tree_view_drag_drop;
 475   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 476   widget_class->focus = gtk_tree_view_focus;
 477
 478   /* GtkContainer signals */
 479   container_class->remove = gtk_tree_view_remove;
 480   container_class->forall = gtk_tree_view_forall;
 481   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 482
 483   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 484   class->move_cursor = gtk_tree_view_real_move_cursor;
 485   class->select_all = gtk_tree_view_real_select_all;
 486   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 487   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 488   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 489   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 490   class->start_interactive_search = gtk_tree_view_real_start_interactive_search;
 491
 492   /* Properties */
 493
 494   g_object_class_install_property (o_class,
 495                                    PROP_MODEL,
 496                                    g_param_spec_object ("model",
 497                                                         _("TreeView Model"),
 498                                                         _("The model for the tree view"),
 499                                                         GTK_TYPE_TREE_MODEL,
 500                                                         G_PARAM_READWRITE));
 501
 502   g_object_class_install_property (o_class,
 503                                    PROP_HADJUSTMENT,
 504                                    g_param_spec_object ("hadjustment",
 505                                                         _("Horizontal Adjustment"),
 506                                                         _("Horizontal Adjustment for the widget"),
 507                                                         GTK_TYPE_ADJUSTMENT,
 508                                                         G_PARAM_READWRITE));
 509
 510   g_object_class_install_property (o_class,
 511                                    PROP_VADJUSTMENT,
 512                                    g_param_spec_object ("vadjustment",
 513                                                         _("Vertical Adjustment"),
 514                                                         _("Vertical Adjustment for the widget"),
 515                                                         GTK_TYPE_ADJUSTMENT,
 516                                                         G_PARAM_READWRITE));
 517
 518   g_object_class_install_property (o_class,
 519                                    PROP_HEADERS_VISIBLE,
 520                                    g_param_spec_boolean ("headers_visible",
 521                                                          _("Visible"),
 522                                                          _("Show the column header buttons"),
 523                                                          FALSE,
 524                                                          G_PARAM_READWRITE));
 525
 526   g_object_class_install_property (o_class,
 527                                    PROP_HEADERS_CLICKABLE,
 528                                    g_param_spec_boolean ("headers_clickable",
 529                                                          _("Headers Clickable"),
 530                                                          _("Column headers respond to click events"),
 531                                                          FALSE,
 532                                                          G_PARAM_WRITABLE));
 533
 534   g_object_class_install_property (o_class,
 535                                    PROP_EXPANDER_COLUMN,
 536                                    g_param_spec_object ("expander_column",
 537                                                         _("Expander Column"),
 538                                                         _("Set the column for the expander column"),
 539                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 540                                                         G_PARAM_READWRITE));
 541
 542   g_object_class_install_property (o_class,
 543                                    PROP_REORDERABLE,
 544                                    g_param_spec_boolean ("reorderable",
 545                                                          _("Reorderable"),
 546                                                          _("View is reorderable"),
 547                                                          FALSE,
 548                                                          G_PARAM_READWRITE));
 549
 550   g_object_class_install_property (o_class,
 551                                    PROP_RULES_HINT,
 552                                    g_param_spec_boolean ("rules_hint",
 553                                                          _("Rules Hint"),
 554                                                          _("Set a hint to the theme engine to draw rows in alternating colors"),
 555                                                          FALSE,
 556                                                          G_PARAM_READWRITE));
 557
 558     g_object_class_install_property (o_class,
 559                                      PROP_ENABLE_SEARCH,
 560                                      g_param_spec_boolean ("enable_search",
 561                                                            _("Enable Search"),
 562                                                            _("View allows user to search through columns interactively"),
 563                                                            TRUE,
 564                                                            G_PARAM_READWRITE));
 565
 566     g_object_class_install_property (o_class,
 567                                      PROP_SEARCH_COLUMN,
 568                                      g_param_spec_int ("search_column",
 569                                                        _("Search Column"),
 570                                                        _("Model column to search through when searching through code"),
 571                                                        -1,
 572                                                        G_MAXINT,
 573                                                        0,
 574                                                        G_PARAM_READWRITE));
 575
 576   /* Style properties */
 577 #define _TREE_VIEW_EXPANDER_SIZE 10
 578 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 579 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 580
 581   gtk_widget_class_install_style_property (widget_class,
 582                                            g_param_spec_int ("expander_size",
 583                                                              _("Expander Size"),
 584                                                              _("Size of the expander arrow."),
 585                                                              0,
 586                                                              G_MAXINT,
 587                                                              _TREE_VIEW_EXPANDER_SIZE,
 588                                                              G_PARAM_READABLE));
 589
 590   gtk_widget_class_install_style_property (widget_class,
 591                                            g_param_spec_int ("vertical_separator",
 592                                                              _("Vertical Separator Width"),
 593                                                              _("Vertical space between cells.  Must be an even number."),
 594                                                              0,
 595                                                              G_MAXINT,
 596                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 597                                                              G_PARAM_READABLE));
 598
 599   gtk_widget_class_install_style_property (widget_class,
 600                                            g_param_spec_int ("horizontal_separator",
 601                                                              _("Horizontal Separator Width"),
 602                                                              _("Horizontal space between cells.  Must be an even number."),
 603                                                              0,
 604                                                              G_MAXINT,
 605                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 606                                                              G_PARAM_READABLE));
 607
 608   gtk_widget_class_install_style_property (widget_class,
 609                                            g_param_spec_boolean ("allow_rules",
 610                                                                  _("Allow Rules"),
 611                                                                  _("Allow drawing of alternating color rows."),
 612                                                                  TRUE,
 613                                                                  G_PARAM_READABLE));
 614
 615   gtk_widget_class_install_style_property (widget_class,
 616                                            g_param_spec_boolean ("indent_expanders",
 617                                                                  _("Indent Expanders"),
 618                                                                  _("Make the expanders indented."),
 619                                                                  TRUE,
 620                                                                  G_PARAM_READABLE));
 621   /* Signals */
 622   widget_class->set_scroll_adjustments_signal =
 623     gtk_signal_new ("set_scroll_adjustments",
 624                     GTK_RUN_LAST,
 625                     GTK_CLASS_TYPE (object_class),
 626                     GTK_SIGNAL_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 627                     _gtk_marshal_VOID__OBJECT_OBJECT,
 628                     GTK_TYPE_NONE, 2,
 629                     GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
 630
 631   tree_view_signals[ROW_ACTIVATED] =
 632     gtk_signal_new ("row_activated",
 633                     GTK_RUN_LAST | GTK_RUN_ACTION,
 634                     GTK_CLASS_TYPE (object_class),
 635                     GTK_SIGNAL_OFFSET (GtkTreeViewClass, row_activated),
 636                     _gtk_marshal_VOID__BOXED_OBJECT,
 637                     GTK_TYPE_NONE, 2,
 638                     GTK_TYPE_TREE_PATH,
 639                     GTK_TYPE_TREE_VIEW_COLUMN);
 640
 641   tree_view_signals[TEST_EXPAND_ROW] =
 642     g_signal_new ("test_expand_row",
 643                   G_TYPE_FROM_CLASS (object_class),
 644                   G_SIGNAL_RUN_LAST,
 645                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 646                   _gtk_boolean_handled_accumulator, NULL,
 647                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 648                   G_TYPE_BOOLEAN, 2,
 649                   GTK_TYPE_TREE_ITER,
 650                   GTK_TYPE_TREE_PATH);
 651
 652   tree_view_signals[TEST_COLLAPSE_ROW] =
 653     g_signal_new ("test_collapse_row",
 654                   G_TYPE_FROM_CLASS (object_class),
 655                   G_SIGNAL_RUN_LAST,
 656                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 657                   _gtk_boolean_handled_accumulator, NULL,
 658                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 659                   G_TYPE_BOOLEAN, 2,
 660                   GTK_TYPE_TREE_ITER,
 661                   GTK_TYPE_TREE_PATH);
 662
 663   tree_view_signals[ROW_EXPANDED] =
 664     g_signal_new ("row_expanded",
 665                   G_TYPE_FROM_CLASS (object_class),
 666                   G_SIGNAL_RUN_LAST,
 667                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 668                   NULL, NULL,
 669                   _gtk_marshal_VOID__BOXED_BOXED,
 670                   GTK_TYPE_NONE, 2,
 671                   GTK_TYPE_TREE_ITER,
 672                   GTK_TYPE_TREE_PATH);
 673
 674   tree_view_signals[ROW_COLLAPSED] =
 675     g_signal_new ("row_collapsed",
 676                   G_TYPE_FROM_CLASS (object_class),
 677                   G_SIGNAL_RUN_LAST,
 678                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 679                   NULL, NULL,
 680                   _gtk_marshal_VOID__BOXED_BOXED,
 681                   GTK_TYPE_NONE, 2,
 682                   GTK_TYPE_TREE_ITER,
 683                   GTK_TYPE_TREE_PATH);
 684
 685   tree_view_signals[COLUMNS_CHANGED] =
 686     g_signal_new ("columns_changed",
 687                   G_TYPE_FROM_CLASS (object_class),
 688                   G_SIGNAL_RUN_LAST,
 689                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 690                   NULL, NULL,
 691                   _gtk_marshal_NONE__NONE,
 692                   G_TYPE_NONE, 0);
 693
 694   tree_view_signals[CURSOR_CHANGED] =
 695     g_signal_new ("cursor_changed",
 696                   G_TYPE_FROM_CLASS (object_class),
 697                   G_SIGNAL_RUN_LAST,
 698                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 699                   NULL, NULL,
 700                   _gtk_marshal_NONE__NONE,
 701                   G_TYPE_NONE, 0);
 702
 703   tree_view_signals[MOVE_CURSOR] =
 704     g_signal_new ("move_cursor",
 705                   G_TYPE_FROM_CLASS (object_class),
 706                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 707                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 708                   NULL, NULL,
 709                   _gtk_marshal_VOID__ENUM_INT,
 710                   GTK_TYPE_NONE, 2, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT);
 711
 712   tree_view_signals[SELECT_ALL] =
 713     g_signal_new ("select_all",
 714                   G_TYPE_FROM_CLASS (object_class),
 715                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 716                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
 717                   NULL, NULL,
 718                   _gtk_marshal_NONE__NONE,
 719                   GTK_TYPE_NONE, 0);
 720
 721   tree_view_signals[SELECT_CURSOR_ROW] =
 722     g_signal_new ("select_cursor_row",
 723                   G_TYPE_FROM_CLASS (object_class),
 724                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 725                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
 726                   NULL, NULL,
 727                   _gtk_marshal_VOID__BOOLEAN,
 728                   GTK_TYPE_NONE, 1,
 729                   G_TYPE_BOOLEAN);
 730
 731   tree_view_signals[TOGGLE_CURSOR_ROW] =
 732     g_signal_new ("toggle_cursor_row",
 733                   G_TYPE_FROM_CLASS (object_class),
 734                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 735                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
 736                   NULL, NULL,
 737                   _gtk_marshal_NONE__NONE,
 738                   GTK_TYPE_NONE, 0);
 739
 740   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
 741     g_signal_new ("expand_collapse_cursor_row",
 742                   G_TYPE_FROM_CLASS (object_class),
 743                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 744                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
 745                   NULL, NULL,
 746                   _gtk_marshal_VOID__BOOLEAN_BOOLEAN_BOOLEAN,
 747                   GTK_TYPE_NONE, 3, GTK_TYPE_BOOL, GTK_TYPE_BOOL, GTK_TYPE_BOOL);
 748
 749   tree_view_signals[SELECT_CURSOR_PARENT] =
 750     g_signal_new ("select_cursor_parent",
 751                   G_TYPE_FROM_CLASS (object_class),
 752                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 753                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
 754                   NULL, NULL,
 755                   _gtk_marshal_NONE__NONE,
 756                   GTK_TYPE_NONE, 0);
 757
 758   tree_view_signals[START_INTERACTIVE_SEARCH] =
 759     g_signal_new ("start_interactive_search",
 760                   G_TYPE_FROM_CLASS (object_class),
 761                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 762                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
 763                   NULL, NULL,
 764                   _gtk_marshal_NONE__NONE,
 765                   GTK_TYPE_NONE, 0);
 766
 767   /* Key bindings */
 768   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0,
 769                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 770
 771   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0,
 772                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 773
 774   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
 775                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 776
 777   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
 778                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 779
 780   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0,
 781                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 782
 783   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0,
 784                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 785
 786   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0,
 787                                   GTK_MOVEMENT_PAGES, -1);
 788
 789   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0,
 790                                   GTK_MOVEMENT_PAGES, 1);
 791
 792   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move_cursor", 2,
 793                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 794                                 GTK_TYPE_INT, 1);
 795
 796   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move_cursor", 2,
 797                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 798                                 GTK_TYPE_INT, -1);
 799
 800   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK, "move_cursor", 2,
 801                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 802                                 GTK_TYPE_INT, 1);
 803
 804   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK, "move_cursor", 2,
 805                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 806                                 GTK_TYPE_INT, -1);
 807
 808   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 809                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 810                                 GTK_TYPE_INT, 1);
 811
 812   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 813                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 814                                 GTK_TYPE_INT, -1);
 815
 816   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "move_cursor", 2,
 817                                 GTK_TYPE_ENUM, GTK_MOVEMENT_LOGICAL_POSITIONS,
 818                                 GTK_TYPE_INT, 1);
 819
 820   gtk_binding_entry_add_signal (binding_set, GDK_b, GDK_CONTROL_MASK, "move_cursor", 2,
 821                                 GTK_TYPE_ENUM, GTK_MOVEMENT_LOGICAL_POSITIONS,
 822                                 GTK_TYPE_INT, -1);
 823
 824   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle_cursor_row", 0);
 825
 826   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select_all", 0);
 827
 828   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select_cursor_row", 1,
 829                                 GTK_TYPE_BOOL, TRUE);
 830
 831   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select_cursor_row", 1,
 832                                 GTK_TYPE_BOOL, TRUE);
 833
 834   /* expand and collapse rows */
 835   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand_collapse_cursor_row", 3,
 836                                 GTK_TYPE_BOOL, FALSE,
 837                                 GTK_TYPE_BOOL, TRUE,
 838                                 GTK_TYPE_BOOL, FALSE);
 839   /* Not doable on US keyboards */
 840   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 841                                 GTK_TYPE_BOOL, FALSE,
 842                                 GTK_TYPE_BOOL, TRUE,
 843                                 GTK_TYPE_BOOL, TRUE);
 844   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand_collapse_cursor_row", 3,
 845                                 GTK_TYPE_BOOL, FALSE,
 846                                 GTK_TYPE_BOOL, TRUE,
 847                                 GTK_TYPE_BOOL, FALSE);
 848   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 849                                 GTK_TYPE_BOOL, FALSE,
 850                                 GTK_TYPE_BOOL, TRUE,
 851                                 GTK_TYPE_BOOL, TRUE);
 852   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 853                                 GTK_TYPE_BOOL, FALSE,
 854                                 GTK_TYPE_BOOL, TRUE,
 855                                 GTK_TYPE_BOOL, TRUE);
 856   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 857                                 GTK_TYPE_BOOL, TRUE,
 858                                 GTK_TYPE_BOOL, TRUE,
 859                                 GTK_TYPE_BOOL, TRUE);
 860
 861   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand_collapse_cursor_row", 3,
 862                                 GTK_TYPE_BOOL, FALSE,
 863                                 GTK_TYPE_BOOL, FALSE,
 864                                 GTK_TYPE_BOOL, FALSE);
 865   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 866                                 GTK_TYPE_BOOL, FALSE,
 867                                 GTK_TYPE_BOOL, FALSE,
 868                                 GTK_TYPE_BOOL, TRUE);
 869   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand_collapse_cursor_row", 3,
 870                                 GTK_TYPE_BOOL, FALSE,
 871                                 GTK_TYPE_BOOL, FALSE,
 872                                 GTK_TYPE_BOOL, FALSE);
 873   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 874                                 GTK_TYPE_BOOL, FALSE,
 875                                 GTK_TYPE_BOOL, FALSE,
 876                                 GTK_TYPE_BOOL, TRUE);
 877   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 878                                 GTK_TYPE_BOOL, FALSE,
 879                                 GTK_TYPE_BOOL, FALSE,
 880                                 GTK_TYPE_BOOL, TRUE);
 881
 882   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select_cursor_parent", 0);
 883
 884   gtk_binding_entry_add_signal (binding_set, GDK_s, GDK_CONTROL_MASK, "start_interactive_search", 0);
 885
 886   gtk_binding_entry_add_signal (binding_set, GDK_S, GDK_CONTROL_MASK, "start_interactive_search", 0);
 887 }
 888
 889 static void
 890 gtk_tree_view_init (GtkTreeView *tree_view)
 891 {
 892   tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);
 893
 894   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
 895
 896   tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
 897   gtk_widget_style_get (GTK_WIDGET (tree_view), "expander_size", &tree_view->priv->tab_offset, NULL);
 898
 899   /* We need some padding */
 900   tree_view->priv->tab_offset += EXPANDER_EXTRA_PADDING;
 901   tree_view->priv->dy = 0;
 902   tree_view->priv->n_columns = 0;
 903   tree_view->priv->header_height = 1;
 904   tree_view->priv->x_drag = 0;
 905   tree_view->priv->drag_pos = -1;
 906   tree_view->priv->header_has_focus = FALSE;
 907   tree_view->priv->pressed_button = -1;
 908   tree_view->priv->press_start_x = -1;
 909   tree_view->priv->press_start_y = -1;
 910   tree_view->priv->reorderable = FALSE;
 911   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
 912   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
 913   _gtk_tree_view_update_size (tree_view);
 914   tree_view->priv->enable_search = TRUE;
 915   tree_view->priv->search_column = -1;
 916   tree_view->priv->search_dialog_position_func = gtk_tree_view_search_position_func;
 917   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
 918 }
 919
 920 \f
 921
 922 /* GObject Methods
 923  */
 924
 925 static void
 926 gtk_tree_view_set_property (GObject         *object,
 927                             guint            prop_id,
 928                             const GValue    *value,
 929                             GParamSpec      *pspec)
 930 {
 931   GtkTreeView *tree_view;
 932
 933   tree_view = GTK_TREE_VIEW (object);
 934
 935   switch (prop_id)
 936     {
 937     case PROP_MODEL:
 938       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
 939       break;
 940     case PROP_HADJUSTMENT:
 941       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
 942       break;
 943     case PROP_VADJUSTMENT:
 944       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
 945       break;
 946     case PROP_HEADERS_VISIBLE:
 947       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
 948       break;
 949     case PROP_HEADERS_CLICKABLE:
 950       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
 951       break;
 952     case PROP_EXPANDER_COLUMN:
 953       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
 954       break;
 955     case PROP_REORDERABLE:
 956       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
 957       break;
 958     case PROP_RULES_HINT:
 959       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
 960     case PROP_ENABLE_SEARCH:
 961       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
 962       break;
 963     case PROP_SEARCH_COLUMN:
 964       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
 965       break;
 966     default:
 967       break;
 968     }
 969 }
 970
 971 static void
 972 gtk_tree_view_get_property (GObject         *object,
 973                             guint            prop_id,
 974                             GValue          *value,
 975                             GParamSpec      *pspec)
 976 {
 977   GtkTreeView *tree_view;
 978
 979   tree_view = GTK_TREE_VIEW (object);
 980
 981   switch (prop_id)
 982     {
 983     case PROP_MODEL:
 984       g_value_set_object (value, tree_view->priv->model);
 985       break;
 986     case PROP_HADJUSTMENT:
 987       g_value_set_object (value, G_OBJECT (tree_view->priv->hadjustment));
 988       break;
 989     case PROP_VADJUSTMENT:
 990       g_value_set_object (value, G_OBJECT (tree_view->priv->vadjustment));
 991       break;
 992     case PROP_HEADERS_VISIBLE:
 993       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
 994       break;
 995     case PROP_EXPANDER_COLUMN:
 996       g_value_set_object (value, tree_view->priv->expander_column);
 997       break;
 998     case PROP_REORDERABLE:
 999       g_value_set_boolean (value, tree_view->priv->reorderable);
1000       break;
1001     case PROP_RULES_HINT:
1002       g_value_set_boolean (value, tree_view->priv->has_rules);
1003       break;
1004     case PROP_ENABLE_SEARCH:
1005       g_value_set_boolean (value, tree_view->priv->enable_search);
1006       break;
1007     case PROP_SEARCH_COLUMN:
1008       g_value_set_int (value, tree_view->priv->search_column);
1009       break;
1010     default:
1011       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1012       break;
1013     }
1014 }
1015
1016 static void
1017 gtk_tree_view_finalize (GObject *object)
1018 {
1019   GtkTreeView *tree_view = (GtkTreeView *) object;
1020
1021   g_free (tree_view->priv);
1022
1023   if (G_OBJECT_CLASS (parent_class)->finalize)
1024     (* G_OBJECT_CLASS (parent_class)->finalize) (object);
1025 }
1026
1027 \f
1028
1029 /* GtkObject Methods
1030  */
1031
1032 static void
1033 gtk_tree_view_destroy (GtkObject *object)
1034 {
1035   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1036   GtkWidget *search_dialog;
1037   GList *list;
1038
1039   gtk_tree_view_stop_editing (tree_view);
1040
1041   if (tree_view->priv->columns != NULL)
1042     {
1043       list = tree_view->priv->columns;
1044       while (list)
1045         {
1046           GtkTreeViewColumn *column;
1047           column = GTK_TREE_VIEW_COLUMN (list->data);
1048           list = list->next;
1049           gtk_tree_view_remove_column (tree_view, column);
1050         }
1051       tree_view->priv->columns = NULL;
1052     }
1053
1054   gtk_tree_view_set_model (tree_view, NULL);
1055
1056   if (tree_view->priv->tree != NULL)
1057     {
1058       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1059       _gtk_rbtree_free (tree_view->priv->tree);
1060       tree_view->priv->tree = NULL;
1061     }
1062
1063   if (tree_view->priv->model != NULL)
1064     {
1065       g_object_unref (G_OBJECT (tree_view->priv->model));
1066       tree_view->priv->model = NULL;
1067     }
1068
1069   if (tree_view->priv->selection != NULL)
1070     {
1071       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1072       g_object_unref (tree_view->priv->selection);
1073       tree_view->priv->selection = NULL;
1074     }
1075
1076   if (tree_view->priv->scroll_to_path != NULL)
1077     {
1078       gtk_tree_path_free (tree_view->priv->scroll_to_path);
1079       tree_view->priv->scroll_to_path = NULL;
1080     }
1081
1082   if (tree_view->priv->drag_dest_row != NULL)
1083     {
1084       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1085       tree_view->priv->drag_dest_row = NULL;
1086     }
1087
1088
1089   if (tree_view->priv->column_drop_func_data &&
1090       tree_view->priv->column_drop_func_data_destroy)
1091     {
1092       (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
1093       tree_view->priv->column_drop_func_data = NULL;
1094     }
1095
1096   if (tree_view->priv->destroy_count_destroy &&
1097       tree_view->priv->destroy_count_data)
1098     {
1099       (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
1100       tree_view->priv->destroy_count_data = NULL;
1101     }
1102
1103   gtk_tree_row_reference_free (tree_view->priv->cursor);
1104   tree_view->priv->cursor = NULL;
1105
1106   gtk_tree_row_reference_free (tree_view->priv->anchor);
1107   tree_view->priv->anchor = NULL;
1108
1109   /* destroy interactive search dialog */
1110   search_dialog = gtk_object_get_data (GTK_OBJECT (tree_view),
1111                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
1112   if (search_dialog)
1113     gtk_tree_view_search_dialog_destroy (search_dialog,
1114                                          tree_view);
1115
1116   if (tree_view->priv->search_user_data)
1117     {
1118       (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
1119       tree_view->priv->search_user_data = NULL;
1120     }
1121   if (GTK_OBJECT_CLASS (parent_class)->destroy)
1122     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
1123 }
1124
1125 \f
1126
1127 /* GtkWidget Methods
1128  */
1129
1130 /* GtkWidget::map helper */
1131 static void
1132 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1133 {
1134   GList *list;
1135
1136   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1137
1138   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1139     {
1140       GtkTreeViewColumn *column;
1141
1142       for (list = tree_view->priv->columns; list; list = list->next)
1143         {
1144           column = list->data;
1145           if (GTK_WIDGET_VISIBLE (column->button) &&
1146               !GTK_WIDGET_MAPPED (column->button))
1147             gtk_widget_map (column->button);
1148         }
1149       for (list = tree_view->priv->columns; list; list = list->next)
1150         {
1151           column = list->data;
1152           if (column->visible == FALSE)
1153             continue;
1154           if (column->resizable)
1155             {
1156               gdk_window_raise (column->window);
1157               gdk_window_show (column->window);
1158             }
1159           else
1160             gdk_window_hide (column->window);
1161         }
1162       gdk_window_show (tree_view->priv->header_window);
1163     }
1164 }
1165
1166 static void
1167 gtk_tree_view_map (GtkWidget *widget)
1168 {
1169   GList *tmp_list;
1170   GtkTreeView *tree_view;
1171
1172   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1173
1174   tree_view = GTK_TREE_VIEW (widget);
1175
1176   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1177
1178   tmp_list = tree_view->priv->children;
1179   while (tmp_list)
1180     {
1181       GtkTreeViewChild *child = tmp_list->data;
1182       tmp_list = tmp_list->next;
1183
1184       if (GTK_WIDGET_VISIBLE (child->widget))
1185         {
1186           if (!GTK_WIDGET_MAPPED (child->widget))
1187             gtk_widget_map (child->widget);
1188         }
1189     }
1190   gdk_window_show (tree_view->priv->bin_window);
1191
1192   gtk_tree_view_map_buttons (tree_view);
1193
1194   gdk_window_show (widget->window);
1195 }
1196
1197 static void
1198 gtk_tree_view_realize (GtkWidget *widget)
1199 {
1200   GList *tmp_list;
1201   GtkTreeView *tree_view;
1202   GdkGCValues values;
1203   GdkWindowAttr attributes;
1204   gint attributes_mask;
1205
1206   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1207
1208   tree_view = GTK_TREE_VIEW (widget);
1209
1210   gtk_tree_view_check_dirty_and_clean (GTK_TREE_VIEW (widget));
1211   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1212
1213   /* Make the main, clipping window */
1214   attributes.window_type = GDK_WINDOW_CHILD;
1215   attributes.x = widget->allocation.x;
1216   attributes.y = widget->allocation.y;
1217   attributes.width = widget->allocation.width;
1218   attributes.height = widget->allocation.height;
1219   attributes.wclass = GDK_INPUT_OUTPUT;
1220   attributes.visual = gtk_widget_get_visual (widget);
1221   attributes.colormap = gtk_widget_get_colormap (widget);
1222   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1223
1224   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1225
1226   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1227                                    &attributes, attributes_mask);
1228   gdk_window_set_user_data (widget->window, widget);
1229
1230   /* Make the window for the tree */
1231   attributes.x = 0;
1232   attributes.y = 0;
1233   attributes.width = tree_view->priv->width;
1234   attributes.height = widget->allocation.height;
1235   attributes.event_mask = GDK_EXPOSURE_MASK |
1236     GDK_SCROLL_MASK |
1237     GDK_POINTER_MOTION_MASK |
1238     GDK_ENTER_NOTIFY_MASK |
1239     GDK_LEAVE_NOTIFY_MASK |
1240     GDK_BUTTON_PRESS_MASK |
1241     GDK_BUTTON_RELEASE_MASK |
1242     gtk_widget_get_events (widget);
1243
1244   tree_view->priv->bin_window = gdk_window_new (widget->window,
1245                                                 &attributes, attributes_mask);
1246   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1247
1248   /* Make the column header window */
1249   attributes.x = 0;
1250   attributes.y = 0;
1251   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1252   attributes.height = tree_view->priv->header_height;
1253   attributes.event_mask = (GDK_EXPOSURE_MASK |
1254                            GDK_SCROLL_MASK |
1255                            GDK_BUTTON_PRESS_MASK |
1256                            GDK_BUTTON_RELEASE_MASK |
1257                            GDK_KEY_PRESS_MASK |
1258                            GDK_KEY_RELEASE_MASK) |
1259     gtk_widget_get_events (widget);
1260
1261   tree_view->priv->header_window = gdk_window_new (widget->window,
1262                                                    &attributes, attributes_mask);
1263   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1264
1265
1266   values.foreground = (widget->style->white.pixel==0 ?
1267                        widget->style->black:widget->style->white);
1268   values.function = GDK_XOR;
1269   values.subwindow_mode = GDK_INCLUDE_INFERIORS;
1270   tree_view->priv->xor_gc = gdk_gc_new_with_values (widget->window,
1271                                                     &values,
1272                                                     GDK_GC_FOREGROUND |
1273                                                     GDK_GC_FUNCTION |
1274                                                     GDK_GC_SUBWINDOW);
1275   /* Add them all up. */
1276   widget->style = gtk_style_attach (widget->style, widget->window);
1277   gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1278   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1279   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1280
1281   tmp_list = tree_view->priv->children;
1282   while (tmp_list)
1283     {
1284       GtkTreeViewChild *child = tmp_list->data;
1285       tmp_list = tmp_list->next;
1286
1287       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1288     }
1289
1290   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1291     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1292
1293   _gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
1294
1295 if (GTK_WIDGET_CLASS (parent_class)->map)
1296     (* GTK_WIDGET_CLASS (parent_class)->map) (widget);
1297 }
1298
1299 static void
1300 gtk_tree_view_unrealize (GtkWidget *widget)
1301 {
1302   GtkTreeView *tree_view;
1303   GList *list;
1304
1305   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1306
1307   tree_view = GTK_TREE_VIEW (widget);
1308
1309   if (tree_view->priv->scroll_timeout != 0)
1310     {
1311       gtk_timeout_remove (tree_view->priv->scroll_timeout);
1312       tree_view->priv->scroll_timeout = 0;
1313     }
1314
1315   if (tree_view->priv->open_dest_timeout != 0)
1316     {
1317       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
1318       tree_view->priv->open_dest_timeout = 0;
1319     }
1320
1321   if (tree_view->priv->expand_collapse_timeout != 0)
1322     {
1323       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
1324       tree_view->priv->expand_collapse_timeout = 0;
1325     }
1326
1327   for (list = tree_view->priv->columns; list; list = list->next)
1328     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1329
1330   gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
1331   gdk_window_destroy (tree_view->priv->bin_window);
1332   tree_view->priv->bin_window = NULL;
1333
1334   gdk_window_set_user_data (tree_view->priv->header_window, NULL);
1335   gdk_window_destroy (tree_view->priv->header_window);
1336   tree_view->priv->header_window = NULL;
1337
1338   if (tree_view->priv->drag_window)
1339     {
1340       gdk_window_set_user_data (tree_view->priv->drag_window, NULL);
1341       gdk_window_destroy (tree_view->priv->drag_window);
1342       tree_view->priv->drag_window = NULL;
1343     }
1344
1345   if (tree_view->priv->drag_highlight_window)
1346     {
1347       gdk_window_set_user_data (tree_view->priv->drag_highlight_window, NULL);
1348       gdk_window_destroy (tree_view->priv->drag_highlight_window);
1349       tree_view->priv->drag_highlight_window = NULL;
1350     }
1351
1352   if (tree_view->priv->xor_gc)
1353     {
1354       gdk_gc_destroy (tree_view->priv->xor_gc);
1355       tree_view->priv->xor_gc = NULL;
1356     }
1357
1358   /* GtkWidget::unrealize destroys children and widget->window */
1359   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1360     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1361 }
1362
1363 /* GtkWidget::size_request helper */
1364 static void
1365 gtk_tree_view_size_request_buttons (GtkTreeView *tree_view)
1366 {
1367   GList *list;
1368
1369   tree_view->priv->header_height = 1;
1370
1371   if (tree_view->priv->model)
1372     {
1373       for (list = tree_view->priv->columns; list; list = list->next)
1374         {
1375           GtkRequisition requisition;
1376           GtkTreeViewColumn *column = list->data;
1377
1378           if (column->button == NULL)
1379             continue;
1380
1381           column = list->data;
1382
1383           gtk_widget_size_request (column->button, &requisition);
1384
1385           _gtk_tree_view_column_set_width (column, MAX (column->width, requisition.width));
1386           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1387         }
1388     }
1389 }
1390
1391 static void
1392 gtk_tree_view_size_request (GtkWidget      *widget,
1393                             GtkRequisition *requisition)
1394 {
1395   GtkTreeView *tree_view;
1396   GList *tmp_list;
1397
1398   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1399
1400   tree_view = GTK_TREE_VIEW (widget);
1401
1402   gtk_tree_view_size_request_buttons (tree_view);
1403
1404   requisition->width = tree_view->priv->width;
1405   requisition->height = tree_view->priv->height + tree_view->priv->header_height;
1406
1407   tmp_list = tree_view->priv->children;
1408
1409   while (tmp_list)
1410     {
1411       GtkTreeViewChild *child = tmp_list->data;
1412       GtkRequisition child_requisition;
1413
1414       tmp_list = tmp_list->next;
1415
1416       if (GTK_WIDGET_VISIBLE (child->widget))
1417         gtk_widget_size_request (child->widget, &child_requisition);
1418     }
1419 }
1420
1421 /* GtkWidget::size_allocate helper */
1422 static void
1423 gtk_tree_view_size_allocate_buttons (GtkWidget *widget)
1424 {
1425   GtkTreeView *tree_view;
1426   GList *list;
1427   GtkTreeViewColumn *column;
1428   GtkAllocation allocation;
1429   gint width = 0;
1430
1431   tree_view = GTK_TREE_VIEW (widget);
1432
1433   allocation.y = 0;
1434   allocation.height = tree_view->priv->header_height;
1435
1436   for (list = tree_view->priv->columns; list != NULL; list = list->next)
1437     {
1438       column = list->data;
1439
1440       if (!column->visible)
1441         continue;
1442
1443       allocation.x = width;
1444       allocation.width = column->width;
1445       width += column->width;
1446       gtk_widget_size_allocate (column->button, &allocation);
1447
1448       if (column->window)
1449         gdk_window_move_resize (column->window,
1450                                 allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
1451                                 allocation.y,
1452                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
1453     }
1454 }
1455
1456 static void
1457 gtk_tree_view_size_allocate (GtkWidget     *widget,
1458                              GtkAllocation *allocation)
1459 {
1460   GList *tmp_list;
1461   GtkTreeView *tree_view;
1462
1463   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1464
1465   widget->allocation = *allocation;
1466
1467   tree_view = GTK_TREE_VIEW (widget);
1468
1469   gtk_tree_view_check_dirty_and_clean (tree_view);
1470
1471   tmp_list = tree_view->priv->children;
1472
1473   while (tmp_list)
1474     {
1475       GtkAllocation allocation;
1476
1477       GtkTreeViewChild *child = tmp_list->data;
1478       tmp_list = tmp_list->next;
1479
1480       /* totally ignore our childs requisition */
1481       allocation.x = child->x;
1482       allocation.y = child->y;
1483       allocation.width = child->width;
1484       allocation.height = child->height;
1485       gtk_widget_size_allocate (child->widget, &allocation);
1486     }
1487
1488   if (GTK_WIDGET_REALIZED (widget))
1489     {
1490       gdk_window_move_resize (widget->window,
1491                               allocation->x, allocation->y,
1492                               allocation->width, allocation->height);
1493       gdk_window_resize (tree_view->priv->header_window,
1494                          MAX (tree_view->priv->width, allocation->width),
1495                          tree_view->priv->header_height);
1496       gdk_window_resize (tree_view->priv->bin_window,
1497                          tree_view->priv->width,
1498                          allocation->height);
1499       _gtk_tree_view_update_col_width (tree_view);
1500     }
1501
1502   gtk_tree_view_size_allocate_buttons (widget);
1503
1504   tree_view->priv->hadjustment->page_size = allocation->width;
1505   tree_view->priv->hadjustment->page_increment = allocation->width;
1506   tree_view->priv->hadjustment->step_increment = allocation->width / 10;
1507   tree_view->priv->hadjustment->lower = 0;
1508   tree_view->priv->hadjustment->upper = tree_view->priv->width;
1509
1510   if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
1511     tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1512   gtk_adjustment_changed (tree_view->priv->hadjustment);
1513
1514   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
1515   tree_view->priv->vadjustment->step_increment = (tree_view->priv->vadjustment->page_size) / 10;
1516   tree_view->priv->vadjustment->page_increment = (allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
1517   tree_view->priv->vadjustment->lower = 0;
1518   tree_view->priv->vadjustment->upper = tree_view->priv->height;
1519
1520   if (tree_view->priv->vadjustment->value + allocation->height > tree_view->priv->height)
1521     gtk_adjustment_set_value (tree_view->priv->vadjustment,
1522                               MAX (tree_view->priv->height - allocation->height, 0));
1523   gtk_adjustment_changed (tree_view->priv->vadjustment);
1524
1525   if (tree_view->priv->scroll_to_path != NULL ||
1526       tree_view->priv->scroll_to_column != NULL)
1527     {
1528       gtk_tree_view_scroll_to_cell (tree_view,
1529                                     tree_view->priv->scroll_to_path,
1530                                     tree_view->priv->scroll_to_column,
1531                                     tree_view->priv->scroll_to_use_align,
1532                                     tree_view->priv->scroll_to_row_align,
1533                                     tree_view->priv->scroll_to_col_align);
1534       if (tree_view->priv->scroll_to_path)
1535         {
1536           gtk_tree_path_free (tree_view->priv->scroll_to_path);
1537           tree_view->priv->scroll_to_path = NULL;
1538         }
1539       tree_view->priv->scroll_to_column = NULL;
1540     }
1541
1542 }
1543
1544 static gboolean
1545 gtk_tree_view_button_press (GtkWidget      *widget,
1546                             GdkEventButton *event)
1547 {
1548   GtkTreeView *tree_view;
1549   GList *list;
1550   GtkTreeViewColumn *column = NULL;
1551   gint i;
1552   GdkRectangle background_area;
1553   GdkRectangle cell_area;
1554   gint vertical_separator;
1555   gint horizontal_separator;
1556
1557   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
1558   g_return_val_if_fail (event != NULL, FALSE);
1559
1560   tree_view = GTK_TREE_VIEW (widget);
1561   gtk_tree_view_stop_editing (tree_view);
1562   gtk_widget_style_get (widget,
1563                         "vertical_separator", &vertical_separator,
1564                         "horizontal_separator", &horizontal_separator,
1565                         NULL);
1566
1567   if (event->window == tree_view->priv->bin_window)
1568     {
1569       GtkRBNode *node;
1570       GtkRBTree *tree;
1571       GtkTreePath *path;
1572       gchar *path_string;
1573       gint depth;
1574       gint new_y;
1575       gint y_offset;
1576       GtkTreeViewColumn *column = NULL;
1577       gint column_handled_click = FALSE;
1578
1579       if (!GTK_WIDGET_HAS_FOCUS (widget))
1580         gtk_widget_grab_focus (widget);
1581       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1582
1583       /* are we in an arrow? */
1584       if (tree_view->priv->prelight_node &&
1585           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
1586         {
1587           if (event->button == 1)
1588             {
1589               gtk_grab_add (widget);
1590               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
1591               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
1592               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
1593                                         tree_view->priv->prelight_tree,
1594                                         tree_view->priv->prelight_node,
1595                                         event->x,
1596                                         event->y);
1597             }
1598           return TRUE;
1599         }
1600
1601       /* find the node that was clicked */
1602       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
1603       if (new_y < 0)
1604         new_y = 0;
1605       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
1606
1607       if (node == NULL)
1608         /* We clicked in dead space */
1609         return TRUE;
1610
1611       /* Get the path and the node */
1612       path = _gtk_tree_view_find_path (tree_view, tree, node);
1613       depth = gtk_tree_path_get_depth (path);
1614       background_area.y = y_offset + event->y;
1615       background_area.height = GTK_RBNODE_GET_HEIGHT (node);
1616       background_area.x = 0;
1617
1618       /* Let the column have a chance at selecting it. */
1619       for (list = tree_view->priv->columns; list; list = list->next)
1620         {
1621           column = list->data;
1622
1623           if (!column->visible)
1624             continue;
1625
1626           background_area.width = column->width;
1627           if ((background_area.x > (gint) event->x) ||
1628               (background_area.x + background_area.width <= (gint) event->x))
1629             {
1630               background_area.x += background_area.width;
1631               continue;
1632             }
1633
1634           /* we found the focus column */
1635           cell_area = background_area;
1636           cell_area.width -= horizontal_separator;
1637           cell_area.height -= vertical_separator;
1638           cell_area.x += horizontal_separator/2;
1639           cell_area.y += vertical_separator/2;
1640           if (gtk_tree_view_is_expander_column (tree_view, column) &&
1641               TREE_VIEW_DRAW_EXPANDERS(tree_view))
1642             {
1643               cell_area.x += depth*tree_view->priv->tab_offset;
1644               cell_area.width -= depth*tree_view->priv->tab_offset;
1645             }
1646           break;
1647         }
1648
1649       if (column == NULL)
1650         return FALSE;
1651
1652       tree_view->priv->focus_column = column;
1653       if (event->state & GDK_CONTROL_MASK)
1654         {
1655           gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
1656           gtk_tree_view_real_toggle_cursor_row (tree_view);
1657         }
1658       else if (event->state & GDK_SHIFT_MASK)
1659         {
1660           gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
1661           gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
1662         }
1663       else
1664         {
1665           gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
1666         }
1667
1668       if (event->type == GDK_BUTTON_PRESS &&
1669           !event->state)
1670         {
1671           GtkCellEditable *cell_editable = NULL;
1672           /* FIXME: get the right flags */
1673           guint flags = 0;
1674           GtkTreeIter iter;
1675
1676           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
1677           gtk_tree_view_column_cell_set_cell_data (column,
1678                                                    tree_view->priv->model,
1679                                                    &iter,
1680                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
1681                                                    node->children?TRUE:FALSE);
1682
1683           path_string = gtk_tree_path_to_string (path);
1684
1685           if (_gtk_tree_view_column_cell_event (column,
1686                                                 &cell_editable,
1687                                                 (GdkEvent *)event,
1688                                                 path_string,
1689                                                 &background_area,
1690                                                 &cell_area, flags))
1691             {
1692               if (cell_editable != NULL)
1693                 {
1694                   gtk_tree_view_real_start_editing (tree_view,
1695                                                     column,
1696                                                     path,
1697                                                     cell_editable,
1698                                                     &cell_area,
1699                                                     (GdkEvent *)event,
1700                                                     flags);
1701
1702                 }
1703               column_handled_click = TRUE;
1704             }
1705           g_free (path_string);
1706         }
1707
1708       /* Save press to possibly begin a drag
1709        */
1710       if (!column_handled_click &&
1711           tree_view->priv->pressed_button < 0)
1712         {
1713           tree_view->priv->pressed_button = event->button;
1714           tree_view->priv->press_start_x = event->x;
1715           tree_view->priv->press_start_y = event->y;
1716         }
1717
1718       if (event->button == 1 && event->type == GDK_2BUTTON_PRESS)
1719         {
1720           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
1721             {
1722               if (node->children == NULL)
1723                 gtk_tree_view_real_expand_row (tree_view, path,
1724                                                tree, node, FALSE, TRUE);
1725               else
1726                 gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
1727                                                  tree, node, TRUE);
1728             }
1729
1730           gtk_tree_view_row_activated (tree_view, path, column);
1731         }
1732       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1733       gtk_tree_path_free (path);
1734       return TRUE;
1735     }
1736
1737   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
1738    */
1739   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
1740     {
1741       column = list->data;
1742       if (event->window == column->window &&
1743           column->resizable &&
1744           column->window)
1745         {
1746           gpointer drag_data;
1747
1748           if (gdk_pointer_grab (column->window, FALSE,
1749                                 GDK_POINTER_MOTION_HINT_MASK |
1750                                 GDK_BUTTON1_MOTION_MASK |
1751                                 GDK_BUTTON_RELEASE_MASK,
1752                                 NULL, NULL, event->time))
1753             return FALSE;
1754
1755           gtk_grab_add (widget);
1756           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
1757
1758           /* block attached dnd signal handler */
1759           drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
1760           if (drag_data)
1761             gtk_signal_handler_block_by_data (GTK_OBJECT (widget), drag_data);
1762
1763           if (!GTK_WIDGET_HAS_FOCUS (widget))
1764             gtk_widget_grab_focus (widget);
1765
1766           tree_view->priv->drag_pos = i;
1767           tree_view->priv->x_drag = (column->button->allocation.x + column->button->allocation.width);
1768         }
1769     }
1770   return TRUE;
1771 }
1772
1773 /* GtkWidget::button_release_event helper */
1774 static gboolean
1775 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
1776                                           GdkEventButton *event)
1777 {
1778   GtkTreeView *tree_view;
1779   GtkAllocation allocation;
1780
1781   tree_view = GTK_TREE_VIEW (widget);
1782
1783   allocation = tree_view->priv->drag_column->button->allocation;
1784   allocation.x = tree_view->priv->drag_column_x;
1785   gdk_pointer_ungrab (GDK_CURRENT_TIME);
1786   gdk_keyboard_ungrab (GDK_CURRENT_TIME);
1787   gdk_window_reparent (tree_view->priv->drag_column->button->window,
1788                        tree_view->priv->header_window,
1789                        tree_view->priv->drag_column_x,
1790                        tree_view->priv->drag_column->button->allocation.y);
1791   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
1792
1793   gtk_widget_size_allocate (tree_view->priv->drag_column->button, &allocation);
1794   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
1795
1796   if (tree_view->priv->cur_reorder &&
1797       tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
1798     gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
1799                                      tree_view->priv->cur_reorder->left_column);
1800   tree_view->priv->drag_column = NULL;
1801   gdk_window_hide (tree_view->priv->drag_window);
1802
1803   g_list_foreach (tree_view->priv->column_drag_info, (GFunc) g_free, NULL);
1804   g_list_free (tree_view->priv->column_drag_info);
1805   tree_view->priv->column_drag_info = NULL;
1806
1807   gdk_window_hide (tree_view->priv->drag_highlight_window);
1808
1809   /* Reset our flags */
1810   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
1811   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
1812
1813   return TRUE;
1814 }
1815
1816 /* GtkWidget::button_release_event helper */
1817 static gboolean
1818 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
1819                                             GdkEventButton *event)
1820 {
1821   GtkTreeView *tree_view;
1822   gpointer drag_data;
1823   gint width;
1824   gint x;
1825   gint i;
1826
1827   tree_view = GTK_TREE_VIEW (widget);
1828
1829   i = tree_view->priv->drag_pos;
1830   tree_view->priv->drag_pos = -1;
1831
1832       /* unblock attached dnd signal handler */
1833   drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
1834   if (drag_data)
1835     gtk_signal_handler_unblock_by_data (GTK_OBJECT (widget), drag_data);
1836
1837   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
1838   gtk_widget_get_pointer (widget, &x, NULL);
1839   gtk_grab_remove (widget);
1840   gdk_pointer_ungrab (event->time);
1841
1842   width = gtk_tree_view_new_column_width (GTK_TREE_VIEW (widget), i, &x);
1843   _gtk_tree_view_column_set_width (gtk_tree_view_get_column (GTK_TREE_VIEW (widget), i), width);
1844
1845   return TRUE;
1846 }
1847
1848 static gboolean
1849 gtk_tree_view_button_release (GtkWidget      *widget,
1850                               GdkEventButton *event)
1851 {
1852   GtkTreeView *tree_view;
1853
1854   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
1855   g_return_val_if_fail (event != NULL, FALSE);
1856
1857   tree_view = GTK_TREE_VIEW (widget);
1858
1859   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
1860     return gtk_tree_view_button_release_drag_column (widget, event);
1861
1862   if (tree_view->priv->pressed_button == event->button)
1863     tree_view->priv->pressed_button = -1;
1864
1865   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
1866     return gtk_tree_view_button_release_column_resize (widget, event);
1867
1868   if (tree_view->priv->button_pressed_node == NULL)
1869     return FALSE;
1870
1871   if (event->button == 1)
1872     {
1873       gtk_grab_remove (widget);
1874       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
1875           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
1876         {
1877           GtkTreePath *path = NULL;
1878
1879           path = _gtk_tree_view_find_path (tree_view,
1880                                            tree_view->priv->button_pressed_tree,
1881                                            tree_view->priv->button_pressed_node);
1882           /* Actually activate the node */
1883           if (tree_view->priv->button_pressed_node->children == NULL)
1884             gtk_tree_view_real_expand_row (tree_view, path,
1885                                            tree_view->priv->button_pressed_tree,
1886                                            tree_view->priv->button_pressed_node,
1887                                            FALSE, TRUE);
1888           else
1889             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
1890                                              tree_view->priv->button_pressed_tree,
1891                                              tree_view->priv->button_pressed_node, TRUE);
1892           gtk_tree_path_free (path);
1893         }
1894
1895       tree_view->priv->button_pressed_tree = NULL;
1896       tree_view->priv->button_pressed_node = NULL;
1897     }
1898
1899   return TRUE;
1900 }
1901
1902
1903 /* GtkWidget::motion_event function set.
1904  */
1905
1906 static gboolean
1907 coords_are_over_arrow (GtkTreeView *tree_view,
1908                        GtkRBTree   *tree,
1909                        GtkRBNode   *node,
1910                        /* these are in window coords */
1911                        gint         x,
1912                        gint         y)
1913 {
1914   GdkRectangle arrow;
1915   gint x2;
1916
1917   if (!GTK_WIDGET_REALIZED (tree_view))
1918     return FALSE;
1919
1920   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
1921     return FALSE;
1922
1923   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
1924
1925   arrow.height = BACKGROUND_HEIGHT (node);
1926
1927   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
1928
1929   arrow.width = x2 - arrow.x;
1930
1931   return (x >= arrow.x &&
1932           x < (arrow.x + arrow.width) &&
1933           y >= arrow.y &&
1934           y < (arrow.y + arrow.height));
1935 }
1936
1937 static void
1938 do_unprelight (GtkTreeView *tree_view,
1939                /* these are in tree window coords */
1940                gint x,
1941                gint y)
1942 {
1943   if (tree_view->priv->prelight_node == NULL)
1944     return;
1945
1946   GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
1947
1948   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
1949       !coords_are_over_arrow (tree_view,
1950                               tree_view->priv->prelight_tree,
1951                               tree_view->priv->prelight_node,
1952                               x,
1953                               y))
1954     /* We need to unprelight the old arrow. */
1955     {
1956       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
1957
1958       gtk_tree_view_draw_arrow (tree_view,
1959                                 tree_view->priv->prelight_tree,
1960                                 tree_view->priv->prelight_node,
1961                                 x,
1962                                 y);
1963
1964     }
1965
1966   tree_view->priv->prelight_node = NULL;
1967   tree_view->priv->prelight_tree = NULL;
1968 }
1969
1970 static void
1971 do_prelight (GtkTreeView *tree_view,
1972              GtkRBTree   *tree,
1973              GtkRBNode   *node,
1974              /* these are in tree_window coords */
1975              gint         x,
1976              gint         y)
1977 {
1978   if (coords_are_over_arrow (tree_view, tree, node, x, y))
1979     {
1980       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
1981     }
1982
1983   tree_view->priv->prelight_node = node;
1984   tree_view->priv->prelight_tree = tree;
1985
1986   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
1987 }
1988
1989 static void
1990 ensure_unprelighted (GtkTreeView *tree_view)
1991 {
1992   do_unprelight (tree_view, -1000, -1000); /* coords not possibly over an arrow */
1993   g_assert (tree_view->priv->prelight_node == NULL);
1994 }
1995
1996
1997
1998
1999 /* Our motion arrow is either a box (in the case of the original spot)
2000  * or an arrow.  It is expander_size wide.
2001  */
2002 /*
2003  * 11111111111111
2004  * 01111111111110
2005  * 00111111111100
2006  * 00011111111000
2007  * 00001111110000
2008  * 00000111100000
2009  * 00000111100000
2010  * 00000111100000
2011  * ~ ~ ~ ~ ~ ~ ~
2012  * 00000111100000
2013  * 00000111100000
2014  * 00000111100000
2015  * 00001111110000
2016  * 00011111111000
2017  * 00111111111100
2018  * 01111111111110
2019  * 11111111111111
2020  */
2021
2022 static void
2023 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
2024 {
2025   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
2026   GtkWidget *widget = GTK_WIDGET (tree_view);
2027   GdkBitmap *mask = NULL;
2028   gint x;
2029   gint y;
2030   gint width;
2031   gint height;
2032   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
2033   GdkWindowAttr attributes;
2034   guint attributes_mask;
2035
2036   if (!reorder ||
2037       reorder->left_column == tree_view->priv->drag_column ||
2038       reorder->right_column == tree_view->priv->drag_column)
2039     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2040   else if (reorder->left_column || reorder->right_column)
2041     {
2042       GdkRectangle visible_rect;
2043       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2044       if (reorder->left_column)
2045         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
2046       else
2047         x = reorder->right_column->button->allocation.x;
2048       if (x < visible_rect.x)
2049         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
2050       else if (x > visible_rect.x + visible_rect.width)
2051         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
2052       else
2053         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
2054     }
2055
2056   /* We want to draw the rectangle over the initial location. */
2057   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2058     {
2059       GdkGC *gc;
2060       GdkColor col;
2061
2062       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2063         {
2064
2065           if (tree_view->priv->drag_highlight_window)
2066             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2067
2068           attributes.window_type = GDK_WINDOW_CHILD;
2069           attributes.wclass = GDK_INPUT_OUTPUT;
2070           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2071           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2072           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2073           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2074           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
2075           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2076
2077           width = tree_view->priv->drag_column->button->allocation.width;
2078           height = tree_view->priv->drag_column->button->allocation.height;
2079           gdk_window_move_resize (tree_view->priv->drag_highlight_window,
2080                                   tree_view->priv->drag_column_x, 0, width, height);
2081
2082           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2083           gc = gdk_gc_new (mask);
2084           col.pixel = 1;
2085           gdk_gc_set_foreground (gc, &col);
2086           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2087           col.pixel = 0;
2088           gdk_gc_set_foreground(gc, &col);
2089           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
2090           gdk_gc_destroy (gc);
2091
2092           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2093                                          mask, 0, 0);
2094           if (mask) gdk_pixmap_unref (mask);
2095           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2096         }
2097     }
2098   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
2099     {
2100       gint i, j = 1;
2101       GdkGC *gc;
2102       GdkColor col;
2103       gint expander_size;
2104
2105       gtk_widget_style_get (widget,
2106                             "expander_size", &expander_size,
2107                             NULL);
2108
2109       width = expander_size;
2110
2111       /* Get x, y, width, height of arrow */
2112       if (reorder->left_column)
2113         {
2114           gdk_window_get_origin (reorder->left_column->button->window, &x, &y);
2115           x += reorder->left_column->button->allocation.width - width/2;
2116           height = reorder->left_column->button->allocation.height;
2117         }
2118       else
2119         {
2120           gdk_window_get_origin (reorder->right_column->button->window, &x, &y);
2121           x -= width/2;
2122           height = reorder->right_column->button->allocation.height;
2123         }
2124       y -= expander_size/2; /* The arrow takes up only half the space */
2125       height += expander_size;
2126
2127       /* Create the new window */
2128       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
2129         {
2130           if (tree_view->priv->drag_highlight_window)
2131             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2132
2133           attributes.window_type = GDK_WINDOW_TEMP;
2134           attributes.wclass = GDK_INPUT_OUTPUT;
2135           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2136           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2137           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2138           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2139           attributes.width = width;
2140           attributes.height = height;
2141           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2142           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2143
2144           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2145           gc = gdk_gc_new (mask);
2146           col.pixel = 1;
2147           gdk_gc_set_foreground (gc, &col);
2148           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2149
2150           /* Draw the 2 arrows as per above */
2151           col.pixel = 0;
2152           gdk_gc_set_foreground (gc, &col);
2153           for (i = 0; i < width; i ++)
2154             {
2155               if (i == (width/2 - 1))
2156                 continue;
2157               gdk_draw_line (mask, gc, i, j, i, height - j);
2158               if (i < (width/2 - 1))
2159                 j++;
2160               else
2161                 j--;
2162             }
2163           gdk_gc_destroy (gc);
2164           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2165                                          mask, 0, 0);
2166           if (mask) gdk_pixmap_unref (mask);
2167         }
2168
2169       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
2170       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2171     }
2172   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
2173            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2174     {
2175       gint i, j = 1;
2176       GdkGC *gc;
2177       GdkColor col;
2178       gint expander_size;
2179
2180       gtk_widget_style_get (widget,
2181                             "expander_size", &expander_size,
2182                             NULL);
2183
2184       width = expander_size;
2185
2186       /* Get x, y, width, height of arrow */
2187       width = width/2; /* remember, the arrow only takes half the available width */
2188       gdk_window_get_origin (widget->window, &x, &y);
2189       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2190         x += widget->allocation.width - width;
2191
2192       if (reorder->left_column)
2193         height = reorder->left_column->button->allocation.height;
2194       else
2195         height = reorder->right_column->button->allocation.height;
2196
2197       y -= expander_size;
2198       height += 2*expander_size;
2199
2200       /* Create the new window */
2201       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
2202           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2203         {
2204           if (tree_view->priv->drag_highlight_window)
2205             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2206
2207           attributes.window_type = GDK_WINDOW_TEMP;
2208           attributes.wclass = GDK_INPUT_OUTPUT;
2209           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2210           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2211           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2212           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2213           attributes.width = width;
2214           attributes.height = height;
2215           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2216           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2217
2218           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2219           gc = gdk_gc_new (mask);
2220           col.pixel = 1;
2221           gdk_gc_set_foreground (gc, &col);
2222           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2223
2224           /* Draw the 2 arrows as per above */
2225           col.pixel = 0;
2226           gdk_gc_set_foreground (gc, &col);
2227           j = expander_size;
2228           for (i = 0; i < width; i ++)
2229             {
2230               gint k;
2231               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
2232                 k = width - i - 1;
2233               else
2234                 k = i;
2235               gdk_draw_line (mask, gc, k, j, k, height - j);
2236               gdk_draw_line (mask, gc, k, 0, k, expander_size - j);
2237               gdk_draw_line (mask, gc, k, height, k, height - expander_size + j);
2238               j--;
2239             }
2240           gdk_gc_destroy (gc);
2241           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2242                                          mask, 0, 0);
2243           if (mask) gdk_pixmap_unref (mask);
2244         }
2245
2246       tree_view->priv->drag_column_window_state = arrow_type;
2247       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2248    }
2249   else
2250     {
2251       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
2252       gdk_window_hide (tree_view->priv->drag_highlight_window);
2253       return;
2254     }
2255
2256   gdk_window_show (tree_view->priv->drag_highlight_window);
2257   gdk_window_raise (tree_view->priv->drag_highlight_window);
2258 }
2259
2260 static gboolean
2261 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
2262                                     GdkEventMotion *event)
2263 {
2264   gint x;
2265   gint new_width;
2266
2267   if (event->is_hint || event->window != widget->window)
2268     gtk_widget_get_pointer (widget, &x, NULL);
2269   else
2270     x = event->x;
2271
2272   new_width = gtk_tree_view_new_column_width (GTK_TREE_VIEW (widget),
2273                                               GTK_TREE_VIEW (widget)->priv->drag_pos, &x);
2274   if (x != GTK_TREE_VIEW (widget)->priv->x_drag)
2275     _gtk_tree_view_column_set_width (gtk_tree_view_get_column (GTK_TREE_VIEW (widget), GTK_TREE_VIEW (widget)->priv->drag_pos), new_width);
2276
2277   /* FIXME: Do we need to scroll */
2278   _gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2279   return FALSE;
2280 }
2281
2282
2283 static void
2284 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
2285 {
2286   GtkTreeViewColumnReorder *reorder = NULL;
2287   GList *list;
2288   gint mouse_x;
2289
2290   gdk_window_get_pointer (tree_view->priv->bin_window, &mouse_x, NULL, NULL);
2291
2292   for (list = tree_view->priv->column_drag_info; list; list = list->next)
2293     {
2294       reorder = (GtkTreeViewColumnReorder *) list->data;
2295       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
2296         break;
2297       reorder = NULL;
2298     }
2299
2300   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
2301       return;*/
2302
2303   tree_view->priv->cur_reorder = reorder;
2304   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
2305 }
2306
2307 static gboolean
2308 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
2309 {
2310   GdkRectangle visible_rect;
2311   gint x;
2312   gint offset;
2313   gfloat value;
2314
2315   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
2316
2317   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2318
2319   /* See if we are near the edge. */
2320   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
2321   if (offset > 0)
2322     {
2323       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
2324       if (offset < 0)
2325         return TRUE;
2326     }
2327   offset = offset/3;
2328
2329   value = CLAMP (tree_view->priv->hadjustment->value + offset,
2330                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
2331   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
2332
2333   return TRUE;
2334
2335 }
2336
2337 static gboolean
2338 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
2339                                   GdkEventMotion *event)
2340 {
2341   GtkTreeView *tree_view = (GtkTreeView *) widget;
2342   GtkTreeViewColumn *column = tree_view->priv->drag_column;
2343   gint x, y;
2344
2345   /* Sanity Check */
2346   if ((column == NULL) ||
2347       (event->window != tree_view->priv->drag_window))
2348     return FALSE;
2349
2350   /* Handle moving the header */
2351   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
2352   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
2353              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
2354   gdk_window_move (tree_view->priv->drag_window, x, y);
2355
2356   /* autoscroll, if needed */
2357   gtk_tree_view_horizontal_autoscroll (tree_view);
2358   /* Update the current reorder position and arrow; */
2359   gtk_tree_view_update_current_reorder (tree_view);
2360
2361   return TRUE;
2362 }
2363
2364 static gboolean
2365 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
2366                                  GdkEventMotion *event)
2367 {
2368   GtkTreeView *tree_view;
2369   GtkRBTree *tree;
2370   GtkRBNode *node;
2371   gint new_y;
2372   GtkRBTree *old_prelight_tree;
2373   GtkRBNode *old_prelight_node;
2374   gboolean old_arrow_prelit;
2375
2376   tree_view = (GtkTreeView *) widget;
2377
2378   if (tree_view->priv->tree == NULL)
2379     return FALSE;
2380
2381   gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
2382
2383   old_prelight_tree = tree_view->priv->prelight_tree;
2384   old_prelight_node = tree_view->priv->prelight_node;
2385   old_arrow_prelit = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2386
2387   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2388   if (new_y < 0)
2389     new_y = 0;
2390   do_unprelight (tree_view, event->x, event->y);
2391   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2392
2393   if (tree == NULL)
2394     return TRUE;
2395
2396   /* If we are currently pressing down a button, we don't want to prelight anything else. */
2397   if ((tree_view->priv->button_pressed_node != NULL) &&
2398       (tree_view->priv->button_pressed_node != node))
2399     return TRUE;
2400
2401
2402   do_prelight (tree_view, tree, node, event->x, event->y);
2403
2404   if (old_prelight_node != tree_view->priv->prelight_node)
2405     {
2406       if (old_prelight_node)
2407         {
2408           gtk_tree_view_queue_draw_node (tree_view,
2409                                        old_prelight_tree,
2410                                        old_prelight_node,
2411                                        NULL);
2412         }
2413       if (tree_view->priv->prelight_node)
2414         {
2415           gtk_tree_view_queue_draw_node (tree_view,
2416                                        tree_view->priv->prelight_tree,
2417                                        tree_view->priv->prelight_node,
2418                                        NULL);
2419         }
2420     }
2421   else if (old_arrow_prelit != GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2422     {
2423       if (tree_view->priv->prelight_node)
2424         {
2425           gtk_tree_view_queue_draw_node (tree_view,
2426                                          tree_view->priv->prelight_tree,
2427                                          tree_view->priv->prelight_node,
2428                                          NULL);
2429         }
2430     }
2431   return TRUE;
2432 }
2433
2434 static gboolean
2435 gtk_tree_view_motion (GtkWidget      *widget,
2436                       GdkEventMotion *event)
2437 {
2438   GtkTreeView *tree_view;
2439
2440   tree_view = (GtkTreeView *) widget;
2441
2442   /* Resizing a column */
2443   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2444     return gtk_tree_view_motion_resize_column (widget, event);
2445
2446   /* Drag column */
2447   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2448     return gtk_tree_view_motion_drag_column (widget, event);
2449
2450   /* Sanity check it */
2451   if (event->window == tree_view->priv->bin_window)
2452     return gtk_tree_view_motion_bin_window (widget, event);
2453
2454   return FALSE;
2455 }
2456
2457 /* Warning: Very scary function.
2458  * Modify at your own risk
2459  *
2460  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
2461  * FIXME: It's not...
2462  */
2463 static gboolean
2464 gtk_tree_view_bin_expose (GtkWidget      *widget,
2465                           GdkEventExpose *event)
2466 {
2467   GtkTreeView *tree_view;
2468   GtkTreePath *path;
2469   GtkRBTree *tree;
2470   GList *list;
2471   GtkRBNode *node;
2472   GtkRBNode *cursor = NULL;
2473   GtkRBTree *cursor_tree = NULL;
2474   GtkRBNode *drag_highlight = NULL;
2475   GtkRBTree *drag_highlight_tree = NULL;
2476   GtkTreeIter iter;
2477   gint new_y;
2478   gint y_offset, x_offset, cell_offset;
2479   gint max_height;
2480   gint depth;
2481   GdkRectangle background_area;
2482   GdkRectangle cell_area;
2483   guint flags;
2484   gint highlight_x;
2485   gint bin_window_width;
2486   GtkTreePath *cursor_path;
2487   GtkTreePath *drag_dest_path;
2488   GList *last_column;
2489   gint vertical_separator;
2490   gint horizontal_separator;
2491   gboolean allow_rules;
2492
2493   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2494
2495   tree_view = GTK_TREE_VIEW (widget);
2496
2497   gtk_widget_style_get (widget,
2498                         "horizontal_separator", &horizontal_separator,
2499                         "vertical_separator", &vertical_separator,
2500                         "allow_rules", &allow_rules,
2501                         NULL);
2502
2503   if (tree_view->priv->tree == NULL)
2504     return TRUE;
2505
2506   /* clip event->area to the visible area */
2507   if (event->area.y < TREE_VIEW_HEADER_HEIGHT (tree_view))
2508     {
2509       event->area.height -= (TREE_VIEW_HEADER_HEIGHT (tree_view) - event->area.y);
2510       event->area.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
2511
2512       if (event->area.height < 0)
2513         return TRUE;
2514     }
2515
2516   gtk_tree_view_check_dirty_and_clean (GTK_TREE_VIEW (widget));
2517
2518   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->area.y);
2519   if (new_y < 0)
2520     new_y = 0;
2521   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2522
2523   if (node == NULL)
2524     return TRUE;
2525
2526   /* find the path for the node */
2527   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
2528                                    tree,
2529                                    node);
2530   gtk_tree_model_get_iter (tree_view->priv->model,
2531                            &iter,
2532                            path);
2533   depth = gtk_tree_path_get_depth (path);
2534   gtk_tree_path_free (path);
2535
2536   cursor_path = NULL;
2537   drag_dest_path = NULL;
2538
2539   if (tree_view->priv->cursor)
2540     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
2541
2542   if (cursor_path)
2543     _gtk_tree_view_find_node (tree_view, cursor_path,
2544                               &cursor_tree, &cursor);
2545
2546   if (tree_view->priv->drag_dest_row)
2547     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
2548
2549   if (drag_dest_path)
2550     _gtk_tree_view_find_node (tree_view, drag_dest_path,
2551                               &drag_highlight_tree, &drag_highlight);
2552
2553   gdk_drawable_get_size (tree_view->priv->bin_window,
2554                          &bin_window_width, NULL);
2555
2556   for (last_column = g_list_last (tree_view->priv->columns);
2557        last_column &&
2558          !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
2559          GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
2560        last_column = last_column->prev)
2561     ;
2562
2563   /* Actually process the expose event.  To do this, we want to
2564    * start at the first node of the event, and walk the tree in
2565    * order, drawing each successive node.
2566    */
2567
2568   do
2569     {
2570       gboolean parity;
2571
2572       max_height = BACKGROUND_HEIGHT (node);
2573
2574       x_offset = -event->area.x;
2575       cell_offset = 0;
2576       highlight_x = 0; /* should match x coord of first cell */
2577
2578       background_area.y = y_offset + event->area.y;
2579       background_area.height = max_height;
2580
2581       flags = 0;
2582
2583       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
2584         flags |= GTK_CELL_RENDERER_PRELIT;
2585
2586       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
2587         flags |= GTK_CELL_RENDERER_SELECTED;
2588
2589       parity = _gtk_rbtree_node_find_parity (tree, node);
2590
2591       for (list = tree_view->priv->columns; list; list = list->next)
2592         {
2593           GtkTreeViewColumn *column = list->data;
2594           const gchar *detail = NULL;
2595           GtkStateType state;
2596
2597           if (!column->visible)
2598             continue;
2599
2600           if (cell_offset > event->area.x + event->area.width ||
2601               cell_offset + column->width < event->area.x)
2602             {
2603               cell_offset += column->width;
2604               continue;
2605             }
2606
2607           if (column->show_sort_indicator)
2608             flags |= GTK_CELL_RENDERER_SORTED;
2609           else
2610             flags &= ~GTK_CELL_RENDERER_SORTED;
2611
2612           gtk_tree_view_column_cell_set_cell_data (column,
2613                                                    tree_view->priv->model,
2614                                                    &iter,
2615                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2616                                                    node->children?TRUE:FALSE);
2617
2618
2619           background_area.x = cell_offset;
2620           background_area.width = column->width;
2621
2622           cell_area = background_area;
2623           cell_area.y += vertical_separator / 2;
2624           cell_area.x += horizontal_separator / 2;
2625           cell_area.height -= vertical_separator;
2626           cell_area.width -= horizontal_separator;
2627
2628           /* Select the detail for drawing the cell.  relevant
2629            * factors are parity, sortedness, and whether to
2630            * display rules.
2631            */
2632           if (allow_rules && tree_view->priv->has_rules)
2633             {
2634               if (flags & GTK_CELL_RENDERER_SORTED)
2635                 {
2636                   if (parity)
2637                     detail = "cell_odd_ruled_sorted";
2638                   else
2639                     detail = "cell_even_ruled_sorted";
2640                 }
2641               else
2642                 {
2643                   if (parity)
2644                     detail = "cell_odd_ruled";
2645                   else
2646                     detail = "cell_even_ruled";
2647                 }
2648             }
2649           else
2650             {
2651               if (flags & GTK_CELL_RENDERER_SORTED)
2652                 {
2653                   if (parity)
2654                     detail = "cell_odd_sorted";
2655                   else
2656                     detail = "cell_even_sorted";
2657                 }
2658               else
2659                 {
2660                   if (parity)
2661                     detail = "cell_odd";
2662                   else
2663                     detail = "cell_even";
2664                 }
2665             }
2666
2667           g_assert (detail);
2668
2669           if (flags & GTK_CELL_RENDERER_SELECTED)
2670             state = GTK_STATE_SELECTED;
2671           else
2672             state = GTK_STATE_NORMAL;
2673
2674           /* Draw background */
2675           gtk_paint_flat_box (widget->style,
2676                               event->window,
2677                               state,
2678                               GTK_SHADOW_NONE,
2679                               &event->area,
2680                               widget,
2681                               detail,
2682                               background_area.x,
2683                               background_area.y,
2684                               background_area.width,
2685                               background_area.height);
2686
2687           if (gtk_tree_view_is_expander_column (tree_view, column) &&
2688               TREE_VIEW_DRAW_EXPANDERS(tree_view))
2689             {
2690               cell_area.x += depth*tree_view->priv->tab_offset;
2691               cell_area.width -= depth*tree_view->priv->tab_offset;
2692
2693               /* If we have an expander column, the highlight underline
2694                * starts with that column, so that it indicates which
2695                * level of the tree we're dropping at.
2696                */
2697               highlight_x = cell_area.x;
2698               gtk_tree_view_column_cell_render (column,
2699                                                 event->window,
2700                                                 &background_area,
2701                                                 &cell_area,
2702                                                 &event->area,
2703                                                 flags);
2704               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
2705                 {
2706                   gint x, y;
2707                   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
2708                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2709                                             tree,
2710                                             node,
2711                                             x, y);
2712                 }
2713             }
2714           else
2715             {
2716               gtk_tree_view_column_cell_render (column,
2717                                                 event->window,
2718                                                 &background_area,
2719                                                 &cell_area,
2720                                                 &event->area,
2721                                                 flags);
2722             }
2723           if (node == cursor &&
2724               ((column == tree_view->priv->focus_column &&
2725                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
2726                 GTK_WIDGET_HAS_FOCUS (widget)) ||
2727                (column == tree_view->priv->edited_column)))
2728             {
2729               gtk_tree_view_column_cell_draw_focus (column,
2730                                                     event->window,
2731                                                     &background_area,
2732                                                     &cell_area,
2733                                                     &event->area,
2734                                                     flags);
2735             }
2736           cell_offset += column->width;
2737         }
2738
2739
2740       if (node == drag_highlight)
2741         {
2742           /* Draw indicator for the drop
2743            */
2744           gint highlight_y = -1;
2745           GtkRBTree *tree = NULL;
2746           GtkRBNode *node = NULL;
2747           gint width;
2748
2749           switch (tree_view->priv->drag_dest_pos)
2750             {
2751             case GTK_TREE_VIEW_DROP_BEFORE:
2752               highlight_y = background_area.y - vertical_separator/2;
2753               break;
2754
2755             case GTK_TREE_VIEW_DROP_AFTER:
2756               highlight_y = background_area.y + background_area.height + vertical_separator/2;
2757               break;
2758
2759             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
2760             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
2761               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
2762
2763               if (tree == NULL)
2764                 break;
2765               gdk_drawable_get_size (tree_view->priv->bin_window,
2766                                      &width, NULL);
2767               gtk_paint_focus (widget->style,
2768                                tree_view->priv->bin_window,
2769                                GTK_WIDGET_STATE (widget),
2770                                NULL,
2771                                widget,
2772                                "treeview-drop-indicator",
2773                                0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node),
2774                                width, BACKGROUND_HEIGHT (node));
2775
2776               break;
2777             }
2778
2779           if (highlight_y >= 0)
2780             {
2781               gdk_draw_line (event->window,
2782                              widget->style->black_gc,
2783                              highlight_x,
2784                              highlight_y,
2785                              bin_window_width - highlight_x,
2786                              highlight_y);
2787             }
2788         }
2789
2790       y_offset += max_height;
2791       if (node->children)
2792         {
2793           GtkTreeIter parent = iter;
2794           gboolean has_child;
2795
2796           tree = node->children;
2797           node = tree->root;
2798
2799           g_assert (node != tree->nil);
2800
2801           while (node->left != tree->nil)
2802             node = node->left;
2803           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
2804                                                     &iter,
2805                                                     &parent);
2806           depth++;
2807
2808           /* Sanity Check! */
2809           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
2810         }
2811       else
2812         {
2813           gboolean done = FALSE;
2814           do
2815             {
2816               node = _gtk_rbtree_next (tree, node);
2817               if (node != NULL)
2818                 {
2819                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
2820                   done = TRUE;
2821
2822                   /* Sanity Check! */
2823                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
2824                 }
2825               else
2826                 {
2827                   GtkTreeIter parent_iter = iter;
2828                   gboolean has_parent;
2829
2830                   node = tree->parent_node;
2831                   tree = tree->parent_tree;
2832                   if (tree == NULL)
2833                     /* we should go to done to free some memory */
2834                     goto done;
2835                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
2836                                                            &iter,
2837                                                            &parent_iter);
2838                   depth--;
2839
2840                   /* Sanity check */
2841                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
2842                 }
2843             }
2844           while (!done);
2845         }
2846     }
2847   while (y_offset < event->area.height);
2848
2849  done:
2850   if (cursor_path)
2851     gtk_tree_path_free (cursor_path);
2852
2853   if (drag_dest_path)
2854     gtk_tree_path_free (drag_dest_path);
2855
2856   return FALSE;
2857 }
2858
2859 static gboolean
2860 gtk_tree_view_expose (GtkWidget      *widget,
2861                       GdkEventExpose *event)
2862 {
2863   GtkTreeView *tree_view;
2864
2865   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2866
2867   tree_view = GTK_TREE_VIEW (widget);
2868
2869   if (event->window == tree_view->priv->bin_window)
2870     return gtk_tree_view_bin_expose (widget, event);
2871   else if (event->window == tree_view->priv->header_window)
2872     {
2873       GList *list;
2874
2875       for (list = tree_view->priv->columns; list != NULL; list = list->next)
2876         {
2877           GtkTreeViewColumn *column = list->data;
2878
2879           if (column->visible)
2880             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
2881                                             column->button,
2882                                             event);
2883         }
2884     }
2885
2886   return TRUE;
2887 }
2888
2889 static gboolean
2890 gtk_tree_view_key_press (GtkWidget   *widget,
2891                          GdkEventKey *event)
2892 {
2893   GtkTreeView *tree_view = (GtkTreeView *) widget;
2894
2895   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2896     {
2897       if (event->keyval == GDK_Escape)
2898         {
2899           tree_view->priv->cur_reorder = NULL;
2900           gtk_tree_view_button_release_drag_column (widget, NULL);
2901         }
2902       return TRUE;
2903     }
2904
2905   return (* GTK_WIDGET_CLASS (parent_class)->key_press_event) (widget, event);
2906 }
2907
2908 /* FIXME Is this function necessary? Can I get an enter_notify event
2909  * w/o either an expose event or a mouse motion event?
2910  */
2911 static gboolean
2912 gtk_tree_view_enter_notify (GtkWidget        *widget,
2913                             GdkEventCrossing *event)
2914 {
2915   GtkTreeView *tree_view;
2916   GtkRBTree *tree;
2917   GtkRBNode *node;
2918   gint new_y;
2919
2920   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2921
2922   tree_view = GTK_TREE_VIEW (widget);
2923
2924   /* Sanity check it */
2925   if (event->window != tree_view->priv->bin_window)
2926     return FALSE;
2927
2928   if (tree_view->priv->tree == NULL)
2929     return FALSE;
2930
2931   if ((tree_view->priv->button_pressed_node != NULL) &&
2932       (tree_view->priv->button_pressed_node != node))
2933     return TRUE;
2934
2935   /* find the node internally */
2936   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2937   if (new_y < 0)
2938     new_y = 0;
2939   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2940
2941   if (node == NULL)
2942     return FALSE;
2943
2944   do_prelight (tree_view, tree, node, event->x, event->y);
2945
2946   if (tree_view->priv->prelight_node)
2947     gtk_tree_view_queue_draw_node (tree_view,
2948                                    tree_view->priv->prelight_tree,
2949                                    tree_view->priv->prelight_node,
2950                                    NULL);
2951
2952   return TRUE;
2953 }
2954
2955 static gboolean
2956 gtk_tree_view_leave_notify (GtkWidget        *widget,
2957                             GdkEventCrossing *event)
2958 {
2959   GtkWidget *search_dialog;
2960   GtkTreeView *tree_view;
2961
2962   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2963
2964   if (event->mode == GDK_CROSSING_GRAB)
2965     return TRUE;
2966   tree_view = GTK_TREE_VIEW (widget);
2967
2968   if (tree_view->priv->prelight_node)
2969     gtk_tree_view_queue_draw_node (tree_view,
2970                                    tree_view->priv->prelight_tree,
2971                                    tree_view->priv->prelight_node,
2972                                    NULL);
2973
2974   ensure_unprelighted (tree_view);
2975
2976   /* destroy interactive search dialog */
2977   search_dialog = gtk_object_get_data (GTK_OBJECT (widget),
2978                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
2979   if (search_dialog)
2980     gtk_tree_view_search_dialog_destroy (search_dialog, GTK_TREE_VIEW (widget));
2981
2982 return TRUE;
2983 }
2984
2985
2986 static gint
2987 gtk_tree_view_focus_in (GtkWidget     *widget,
2988                         GdkEventFocus *event)
2989 {
2990   GtkTreeView *tree_view;
2991
2992   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2993   g_return_val_if_fail (event != NULL, FALSE);
2994
2995   tree_view = GTK_TREE_VIEW (widget);
2996
2997   GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
2998
2999   gtk_widget_queue_draw (widget);
3000
3001   return FALSE;
3002 }
3003
3004
3005 static gint
3006 gtk_tree_view_focus_out (GtkWidget     *widget,
3007                          GdkEventFocus *event)
3008 {
3009   GtkWidget   *search_dialog;
3010
3011   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3012   g_return_val_if_fail (event != NULL, FALSE);
3013
3014   GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3015
3016   gtk_widget_queue_draw (widget);
3017
3018   /* destroy interactive search dialog */
3019   search_dialog = gtk_object_get_data (GTK_OBJECT (widget),
3020                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
3021   if (search_dialog)
3022     gtk_tree_view_search_dialog_destroy (search_dialog, GTK_TREE_VIEW (widget));
3023   return FALSE;
3024 }
3025
3026 /* Incremental Reflow */
3027
3028 static void
3029 validate_visible_area (GtkTreeView *tree_view)
3030 {
3031
3032 }
3033
3034 static gboolean
3035 validate_rows_handler (GtkTreeView *tree_view)
3036 {
3037   g_assert (tree_view);
3038
3039   g_return_val_if_fail (tree_view->priv->tree != NULL, TRUE);
3040
3041   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
3042     return TRUE;
3043
3044
3045   return TRUE;
3046 }
3047
3048 static gboolean
3049 presize_handler_callback (gpointer data)
3050 {
3051
3052   return TRUE;
3053 }
3054
3055 static void
3056 install_presize_handler (GtkTreeView *tree_view)
3057 {
3058
3059 }
3060
3061 /* Drag-and-drop */
3062
3063 static void
3064 set_source_row (GdkDragContext *context,
3065                 GtkTreeModel   *model,
3066                 GtkTreePath    *source_row)
3067 {
3068   g_object_set_data_full (G_OBJECT (context),
3069                           "gtk-tree-view-source-row",
3070                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
3071                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
3072 }
3073
3074 static GtkTreePath*
3075 get_source_row (GdkDragContext *context)
3076 {
3077   GtkTreeRowReference *ref =
3078     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
3079
3080   if (ref)
3081     return gtk_tree_row_reference_get_path (ref);
3082   else
3083     return NULL;
3084 }
3085
3086
3087 static void
3088 set_dest_row (GdkDragContext *context,
3089               GtkTreeModel   *model,
3090               GtkTreePath    *dest_row)
3091 {
3092   g_object_set_data_full (G_OBJECT (context),
3093                           "gtk-tree-view-dest-row",
3094                           dest_row ? gtk_tree_row_reference_new (model, dest_row) : NULL,
3095                           (GDestroyNotify) (dest_row ? gtk_tree_row_reference_free : NULL));
3096 }
3097
3098 static GtkTreePath*
3099 get_dest_row (GdkDragContext *context)
3100 {
3101   GtkTreeRowReference *ref =
3102     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
3103
3104   if (ref)
3105     return gtk_tree_row_reference_get_path (ref);
3106   else
3107     return NULL;
3108 }
3109
3110 /* Get/set whether drag_motion requested the drag data and
3111  * drag_data_received should thus not actually insert the data,
3112  * since the data doesn't result from a drop.
3113  */
3114 static void
3115 set_status_pending (GdkDragContext *context,
3116                     GdkDragAction   suggested_action)
3117 {
3118   g_object_set_data (G_OBJECT (context),
3119                      "gtk-tree-view-status-pending",
3120                      GINT_TO_POINTER (suggested_action));
3121 }
3122
3123 static GdkDragAction
3124 get_status_pending (GdkDragContext *context)
3125 {
3126   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
3127                                              "gtk-tree-view-status-pending"));
3128 }
3129
3130 static TreeViewDragInfo*
3131 get_info (GtkTreeView *tree_view)
3132 {
3133   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
3134 }
3135
3136 static void
3137 clear_source_info (TreeViewDragInfo *di)
3138 {
3139   if (di->source_target_list)
3140     gtk_target_list_unref (di->source_target_list);
3141
3142   di->source_target_list = NULL;
3143 }
3144
3145 static void
3146 clear_dest_info (TreeViewDragInfo *di)
3147 {
3148   if (di->dest_target_list)
3149     gtk_target_list_unref (di->dest_target_list);
3150
3151   di->dest_target_list = NULL;
3152 }
3153
3154 static void
3155 destroy_info (TreeViewDragInfo *di)
3156 {
3157   clear_source_info (di);
3158   clear_dest_info (di);
3159   g_free (di);
3160 }
3161
3162 static TreeViewDragInfo*
3163 ensure_info (GtkTreeView *tree_view)
3164 {
3165   TreeViewDragInfo *di;
3166
3167   di = get_info (tree_view);
3168
3169   if (di == NULL)
3170     {
3171       di = g_new0 (TreeViewDragInfo, 1);
3172
3173       g_object_set_data_full (G_OBJECT (tree_view),
3174                               "gtk-tree-view-drag-info",
3175                               di,
3176                               (GDestroyNotify) destroy_info);
3177     }
3178
3179   return di;
3180 }
3181
3182 static void
3183 remove_info (GtkTreeView *tree_view)
3184 {
3185   g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
3186 }
3187
3188 #if 0
3189 static gint
3190 drag_scan_timeout (gpointer data)
3191 {
3192   GtkTreeView *tree_view;
3193   gint x, y;
3194   GdkModifierType state;
3195   GtkTreePath *path = NULL;
3196   GtkTreeViewColumn *column = NULL;
3197   GdkRectangle visible_rect;
3198
3199   GDK_THREADS_ENTER ();
3200
3201   tree_view = GTK_TREE_VIEW (data);
3202
3203   gdk_window_get_pointer (tree_view->priv->bin_window,
3204                           &x, &y, &state);
3205
3206   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3207
3208   /* See if we are near the edge. */
3209   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
3210       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
3211       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
3212       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
3213     {
3214       gtk_tree_view_get_path_at_pos (tree_view,
3215                                      tree_view->priv->bin_window,
3216                                      x, y,
3217                                      &path,
3218                                      &column,
3219                                      NULL,
3220                                      NULL);
3221
3222       if (path != NULL)
3223         {
3224           gtk_tree_view_scroll_to_cell (tree_view,
3225                                         path,
3226                                         column,
3227                                         TRUE,
3228                                         0.5, 0.5);
3229
3230           gtk_tree_path_free (path);
3231         }
3232     }
3233
3234   GDK_THREADS_LEAVE ();
3235
3236   return TRUE;
3237 }
3238 #endif /* 0 */
3239
3240 static void
3241 remove_scroll_timeout (GtkTreeView *tree_view)
3242 {
3243   if (tree_view->priv->scroll_timeout != 0)
3244     {
3245       gtk_timeout_remove (tree_view->priv->scroll_timeout);
3246       tree_view->priv->scroll_timeout = 0;
3247     }
3248 }
3249 static gboolean
3250 check_model_dnd (GtkTreeModel *model,
3251                  GType         required_iface,
3252                  const gchar  *signal)
3253 {
3254   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
3255     {
3256       g_warning ("You must override the default '%s' handler "
3257                  "on GtkTreeView when using models that don't support "
3258                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
3259                  "is to connect to '%s' and call "
3260                  "gtk_signal_emit_stop_by_name() in your signal handler to prevent "
3261                  "the default handler from running. Look at the source code "
3262                  "for the default handler in gtktreeview.c to get an idea what "
3263                  "your handler should do. (gtktreeview.c is in the GTK source "
3264                  "code.) If you're using GTK from a language other than C, "
3265                  "there may be a more natural way to override default handlers, e.g. via derivation.",
3266                  signal, g_type_name (required_iface), signal);
3267       return FALSE;
3268     }
3269   else
3270     return TRUE;
3271 }
3272
3273 static void
3274 remove_open_timeout (GtkTreeView *tree_view)
3275 {
3276   if (tree_view->priv->open_dest_timeout != 0)
3277     {
3278       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
3279       tree_view->priv->open_dest_timeout = 0;
3280     }
3281 }
3282
3283
3284 static gint
3285 open_row_timeout (gpointer data)
3286 {
3287   GtkTreeView *tree_view = data;
3288   GtkTreePath *dest_path = NULL;
3289   GtkTreeViewDropPosition pos;
3290   gboolean result = FALSE;
3291
3292   GDK_THREADS_ENTER ();
3293
3294   gtk_tree_view_get_drag_dest_row (tree_view,
3295                                    &dest_path,
3296                                    &pos);
3297
3298   if (dest_path &&
3299       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
3300        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
3301     {
3302       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
3303       tree_view->priv->open_dest_timeout = 0;
3304
3305       gtk_tree_path_free (dest_path);
3306     }
3307   else
3308     {
3309       if (dest_path)
3310         gtk_tree_path_free (dest_path);
3311
3312       result = TRUE;
3313     }
3314
3315   GDK_THREADS_LEAVE ();
3316
3317   return result;
3318 }
3319
3320 /* Returns TRUE if event should not be propagated to parent widgets */
3321 static gboolean
3322 set_destination_row (GtkTreeView    *tree_view,
3323                      GdkDragContext *context,
3324                      gint            x,
3325                      gint            y,
3326                      GdkDragAction  *suggested_action,
3327                      GdkAtom        *target)
3328 {
3329   GtkTreePath *path = NULL;
3330   GtkTreeViewDropPosition pos;
3331   GtkTreeViewDropPosition old_pos;
3332   TreeViewDragInfo *di;
3333   GtkWidget *widget;
3334   GtkTreePath *old_dest_path = NULL;
3335
3336   *suggested_action = 0;
3337   *target = GDK_NONE;
3338
3339   widget = GTK_WIDGET (tree_view);
3340
3341   di = get_info (tree_view);
3342
3343   if (di == NULL)
3344     {
3345       /* someone unset us as a drag dest, note that if
3346        * we return FALSE drag_leave isn't called
3347        */
3348
3349       gtk_tree_view_set_drag_dest_row (tree_view,
3350                                        NULL,
3351                                        GTK_TREE_VIEW_DROP_BEFORE);
3352
3353       remove_scroll_timeout (GTK_TREE_VIEW (widget));
3354       remove_open_timeout (GTK_TREE_VIEW (widget));
3355
3356       return FALSE; /* no longer a drop site */
3357     }
3358
3359   *target = gtk_drag_dest_find_target (widget, context, di->dest_target_list);
3360   if (*target == GDK_NONE)
3361     {
3362       return FALSE;
3363     }
3364
3365   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
3366                                           x, y,
3367                                           &path,
3368                                           &pos))
3369     {
3370       /* can't drop here */
3371       remove_open_timeout (tree_view);
3372
3373       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
3374                                        NULL,
3375                                        GTK_TREE_VIEW_DROP_BEFORE);
3376
3377       /* don't propagate to parent though */
3378       return TRUE;
3379     }
3380
3381   g_assert (path);
3382
3383   /* If we left the current row's "open" zone, unset the timeout for
3384    * opening the row
3385    */
3386   gtk_tree_view_get_drag_dest_row (tree_view,
3387                                    &old_dest_path,
3388                                    &old_pos);
3389
3390   if (old_dest_path &&
3391       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
3392        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
3393          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
3394     remove_open_timeout (tree_view);
3395
3396   if (old_dest_path)
3397     gtk_tree_path_free (old_dest_path);
3398
3399   if (TRUE /* FIXME if the location droppable predicate */)
3400     {
3401       GtkWidget *source_widget;
3402
3403       *suggested_action = context->suggested_action;
3404
3405       source_widget = gtk_drag_get_source_widget (context);
3406
3407       if (source_widget == widget)
3408         {
3409           /* Default to MOVE, unless the user has
3410            * pressed ctrl or alt to affect available actions
3411            */
3412           if ((context->actions & GDK_ACTION_MOVE) != 0)
3413             *suggested_action = GDK_ACTION_MOVE;
3414         }
3415
3416       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
3417                                        path, pos);
3418     }
3419   else
3420     {
3421       /* can't drop here */
3422       remove_open_timeout (tree_view);
3423
3424       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
3425                                        NULL,
3426                                        GTK_TREE_VIEW_DROP_BEFORE);
3427     }
3428
3429   return TRUE;
3430 }
3431 static GtkTreePath*
3432 get_logical_dest_row (GtkTreeView *tree_view)
3433
3434 {
3435   /* adjust path to point to the row the drop goes in front of */
3436   GtkTreePath *path = NULL;
3437   GtkTreeViewDropPosition pos;
3438
3439   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
3440
3441   if (path == NULL)
3442     return NULL;
3443
3444   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
3445     ; /* do nothing */
3446   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
3447            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
3448     {
3449       /* get first child, drop before it */
3450       gtk_tree_path_append_index (path, 0);
3451     }
3452   else
3453     {
3454       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
3455       gtk_tree_path_next (path);
3456     }
3457
3458   return path;
3459 }
3460
3461 static gboolean
3462 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
3463                                         GdkEventMotion   *event)
3464 {
3465   GdkDragContext *context;
3466   TreeViewDragInfo *di;
3467   GtkTreePath *path = NULL;
3468   gint button;
3469   gint cell_x, cell_y;
3470   GtkTreeModel *model;
3471   gboolean retval = FALSE;
3472
3473   di = get_info (tree_view);
3474
3475   if (di == NULL)
3476     goto out;
3477
3478   if (tree_view->priv->pressed_button < 0)
3479     goto out;
3480
3481   if (!gtk_drag_check_threshold (GTK_WIDGET (tree_view),
3482                                  tree_view->priv->press_start_x,
3483                                  tree_view->priv->press_start_y,
3484                                  event->x, event->y))
3485     goto out;
3486
3487   model = gtk_tree_view_get_model (tree_view);
3488
3489   if (model == NULL)
3490     goto out;
3491
3492   button = tree_view->priv->pressed_button;
3493   tree_view->priv->pressed_button = -1;
3494
3495   gtk_tree_view_get_path_at_pos (tree_view,
3496                                  tree_view->priv->press_start_x,
3497                                  tree_view->priv->press_start_y,
3498                                  &path,
3499                                  NULL,
3500                                  &cell_x,
3501                                  &cell_y);
3502
3503   if (path == NULL)
3504     goto out;
3505
3506   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
3507       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
3508                                            path))
3509     goto out;
3510
3511   /* FIXME Check whether we're a start button, if not return FALSE and
3512    * free path
3513    */
3514
3515   /* Now we can begin the drag */
3516
3517   retval = TRUE;
3518
3519   context = gtk_drag_begin (GTK_WIDGET (tree_view),
3520                             di->source_target_list,
3521                             di->source_actions,
3522                             button,
3523                             (GdkEvent*)event);
3524
3525   gtk_drag_set_icon_default (context);
3526
3527   {
3528     GdkPixmap *row_pix;
3529
3530     row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
3531                                                   path);
3532
3533     gtk_drag_set_icon_pixmap (context,
3534                               gdk_drawable_get_colormap (row_pix),
3535                               row_pix,
3536                               NULL,
3537                               /* the + 1 is for the black border in the icon */
3538                               tree_view->priv->press_start_x + 1,
3539                               cell_y + 1);
3540
3541     gdk_pixmap_unref (row_pix);
3542   }
3543
3544   set_source_row (context, model, path);
3545
3546  out:
3547   if (path)
3548     gtk_tree_path_free (path);
3549
3550   return retval;
3551 }
3552
3553
3554 static void
3555 gtk_tree_view_drag_begin (GtkWidget      *widget,
3556                           GdkDragContext *context)
3557 {
3558   /* do nothing */
3559 }
3560
3561 static void
3562 gtk_tree_view_drag_end (GtkWidget      *widget,
3563                         GdkDragContext *context)
3564 {
3565   /* do nothing */
3566 }
3567
3568 /* Default signal implementations for the drag signals */
3569 static void
3570 gtk_tree_view_drag_data_get (GtkWidget        *widget,
3571                              GdkDragContext   *context,
3572                              GtkSelectionData *selection_data,
3573                              guint             info,
3574                              guint             time)
3575 {
3576   GtkTreeView *tree_view;
3577   GtkTreeModel *model;
3578   TreeViewDragInfo *di;
3579   GtkTreePath *source_row;
3580
3581   tree_view = GTK_TREE_VIEW (widget);
3582
3583   model = gtk_tree_view_get_model (tree_view);
3584
3585   if (model == NULL)
3586     return;
3587
3588   di = get_info (GTK_TREE_VIEW (widget));
3589
3590   if (di == NULL)
3591     return;
3592
3593   source_row = get_source_row (context);
3594
3595   if (source_row == NULL)
3596     return;
3597
3598   /* We can implement the GTK_TREE_MODEL_ROW target generically for
3599    * any model; for DragSource models there are some other targets
3600    * we also support.
3601    */
3602
3603   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
3604       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
3605                                           source_row,
3606                                           selection_data))
3607     goto done;
3608
3609   /* If drag_data_get does nothing, try providing row data. */
3610   if (selection_data->target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
3611     {
3612       gtk_tree_set_row_drag_data (selection_data,
3613                                   model,
3614                                   source_row);
3615     }
3616
3617  done:
3618   gtk_tree_path_free (source_row);
3619 }
3620
3621
3622 static void
3623 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
3624                                 GdkDragContext *context)
3625 {
3626   TreeViewDragInfo *di;
3627   GtkTreeModel *model;
3628   GtkTreeView *tree_view;
3629   GtkTreePath *source_row;
3630
3631   tree_view = GTK_TREE_VIEW (widget);
3632   model = gtk_tree_view_get_model (tree_view);
3633
3634   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
3635     return;
3636
3637   di = get_info (tree_view);
3638
3639   if (di == NULL)
3640     return;
3641
3642   source_row = get_source_row (context);
3643
3644   if (source_row == NULL)
3645     return;
3646
3647   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
3648                                          source_row);
3649
3650   gtk_tree_path_free (source_row);
3651
3652   set_source_row (context, NULL, NULL);
3653 }
3654
3655 static void
3656 gtk_tree_view_drag_leave (GtkWidget      *widget,
3657                           GdkDragContext *context,
3658                           guint             time)
3659 {
3660   TreeViewDragInfo *di;
3661
3662   di = get_info (GTK_TREE_VIEW (widget));
3663
3664   /* unset any highlight row */
3665   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
3666                                    NULL,
3667                                    GTK_TREE_VIEW_DROP_BEFORE);
3668
3669   remove_scroll_timeout (GTK_TREE_VIEW (widget));
3670   remove_open_timeout (GTK_TREE_VIEW (widget));
3671 }
3672
3673
3674 static gboolean
3675 gtk_tree_view_drag_motion (GtkWidget        *widget,
3676                            GdkDragContext   *context,
3677                            gint              x,
3678                            gint              y,
3679                            guint             time)
3680 {
3681   GtkTreePath *path = NULL;
3682   GtkTreeViewDropPosition pos;
3683   GtkTreeView *tree_view;
3684   GdkDragAction suggested_action = 0;
3685   GdkAtom target;
3686
3687   tree_view = GTK_TREE_VIEW (widget);
3688
3689   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
3690     return FALSE;
3691
3692   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
3693
3694   if (path == NULL)
3695     {
3696       /* Can't drop here. */
3697       gdk_drag_status (context, 0, time);
3698     }
3699   else
3700     {
3701       if (tree_view->priv->open_dest_timeout == 0 &&
3702           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
3703            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
3704         {
3705           tree_view->priv->open_dest_timeout =
3706             gtk_timeout_add (500, open_row_timeout, tree_view);
3707         }
3708
3709       if (target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
3710         {
3711           /* Request data so we can use the source row when
3712            * determining whether to accept the drop
3713            */
3714           set_status_pending (context, suggested_action);
3715           gtk_drag_get_data (widget, context, target, time);
3716         }
3717       else
3718         {
3719           set_status_pending (context, 0);
3720           gdk_drag_status (context, suggested_action, time);
3721         }
3722     }
3723
3724   if (path)
3725     gtk_tree_path_free (path);
3726
3727   return TRUE;
3728 }
3729
3730
3731 static gboolean
3732 gtk_tree_view_drag_drop (GtkWidget        *widget,
3733                          GdkDragContext   *context,
3734                          gint              x,
3735                          gint              y,
3736                          guint             time)
3737 {
3738   GtkTreeView *tree_view;
3739   GtkTreePath *path;
3740   GdkDragAction suggested_action = 0;
3741   GdkAtom target = GDK_NONE;
3742   TreeViewDragInfo *di;
3743   GtkTreeModel *model;
3744
3745   tree_view = GTK_TREE_VIEW (widget);
3746
3747   model = gtk_tree_view_get_model (tree_view);
3748
3749   remove_scroll_timeout (GTK_TREE_VIEW (widget));
3750   remove_open_timeout (GTK_TREE_VIEW (widget));
3751
3752   di = get_info (tree_view);
3753
3754   if (di == NULL)
3755     return FALSE;
3756
3757   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
3758     return FALSE;
3759
3760   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
3761     return FALSE;
3762
3763   path = get_logical_dest_row (tree_view);
3764
3765   if (target != GDK_NONE && path != NULL)
3766     {
3767       /* in case a motion had requested drag data, change things so we
3768        * treat drag data receives as a drop.
3769        */
3770       set_status_pending (context, 0);
3771
3772       set_dest_row (context, model, path);
3773     }
3774
3775   if (path)
3776     gtk_tree_path_free (path);
3777
3778   /* Unset this thing */
3779   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
3780                                    NULL,
3781                                    GTK_TREE_VIEW_DROP_BEFORE);
3782
3783   if (target != GDK_NONE)
3784     {
3785       gtk_drag_get_data (widget, context, target, time);
3786       return TRUE;
3787     }
3788   else
3789     return FALSE;
3790 }
3791
3792 static void
3793 gtk_tree_view_drag_data_received (GtkWidget        *widget,
3794                                   GdkDragContext   *context,
3795                                   gint              x,
3796                                   gint              y,
3797                                   GtkSelectionData *selection_data,
3798                                   guint             info,
3799                                   guint             time)
3800 {
3801   GtkTreePath *path;
3802   TreeViewDragInfo *di;
3803   gboolean accepted = FALSE;
3804   GtkTreeModel *model;
3805   GtkTreeView *tree_view;
3806   GtkTreePath *dest_row;
3807   GdkDragAction suggested_action;
3808
3809   tree_view = GTK_TREE_VIEW (widget);
3810
3811   model = gtk_tree_view_get_model (tree_view);
3812
3813   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
3814     return;
3815
3816   di = get_info (tree_view);
3817
3818   if (di == NULL)
3819     return;
3820
3821   suggested_action = get_status_pending (context);
3822
3823   if (suggested_action)
3824     {
3825       /* We are getting this data due to a request in drag_motion,
3826        * rather than due to a request in drag_drop, so we are just
3827        * supposed to call drag_status, not actually paste in the
3828        * data.
3829        */
3830       path = get_logical_dest_row (tree_view);
3831
3832       if (path == NULL)
3833         suggested_action = 0;
3834
3835       if (suggested_action)
3836         {
3837           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
3838                                                      path,
3839                                                      selection_data))
3840             suggested_action = 0;
3841         }
3842
3843       gdk_drag_status (context, suggested_action, time);
3844
3845       if (path)
3846         gtk_tree_path_free (path);
3847
3848       /* If you can't drop, remove user drop indicator until the next motion */
3849       if (suggested_action == 0)
3850         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
3851                                          NULL,
3852                                          GTK_TREE_VIEW_DROP_BEFORE);
3853
3854       return;
3855     }
3856
3857   dest_row = get_dest_row (context);
3858
3859   if (dest_row == NULL)
3860     return;
3861
3862   if (selection_data->length >= 0)
3863     {
3864       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
3865                                                  dest_row,
3866                                                  selection_data))
3867         accepted = TRUE;
3868     }
3869
3870   gtk_drag_finish (context,
3871                    accepted,
3872                    (context->action == GDK_ACTION_MOVE),
3873                    time);
3874
3875   gtk_tree_path_free (dest_row);
3876
3877   /* drop dest_row */
3878   set_dest_row (context, NULL, NULL);
3879 }
3880
3881
3882
3883 /* GtkContainer Methods
3884  */
3885
3886
3887 static void
3888 gtk_tree_view_remove (GtkContainer *container,
3889                       GtkWidget    *widget)
3890 {
3891   GtkTreeView *tree_view;
3892   GtkTreeViewChild *child = NULL;
3893   GList *tmp_list;
3894
3895   g_return_if_fail (GTK_IS_TREE_VIEW (container));
3896
3897   tree_view = GTK_TREE_VIEW (container);
3898
3899   tmp_list = tree_view->priv->children;
3900   while (tmp_list)
3901     {
3902       child = tmp_list->data;
3903       if (child->widget == widget)
3904         {
3905           gtk_widget_unparent (widget);
3906
3907           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
3908           g_list_free_1 (tmp_list);
3909           g_free (child);
3910           return;
3911         }
3912
3913       tmp_list = tmp_list->next;
3914     }
3915
3916   tmp_list = tree_view->priv->columns;
3917
3918   while (tmp_list)
3919     {
3920       GtkTreeViewColumn *column;
3921       column = tmp_list->data;
3922       if (column->button == widget)
3923         {
3924           gtk_widget_unparent (widget);
3925           return;
3926         }
3927       tmp_list = tmp_list->next;
3928     }
3929
3930 }
3931
3932 static void
3933 gtk_tree_view_forall (GtkContainer *container,
3934                       gboolean      include_internals,
3935                       GtkCallback   callback,
3936                       gpointer      callback_data)
3937 {
3938   GtkTreeView *tree_view;
3939   GtkTreeViewChild *child = NULL;
3940   GtkTreeViewColumn *column;
3941   GList *tmp_list;
3942
3943   g_return_if_fail (GTK_IS_TREE_VIEW (container));
3944   g_return_if_fail (callback != NULL);
3945
3946   tree_view = GTK_TREE_VIEW (container);
3947
3948   tmp_list = tree_view->priv->children;
3949   while (tmp_list)
3950     {
3951       child = tmp_list->data;
3952       tmp_list = tmp_list->next;
3953
3954       (* callback) (child->widget, callback_data);
3955     }
3956   if (include_internals == FALSE)
3957     return;
3958
3959   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
3960     {
3961       column = tmp_list->data;
3962
3963       if (column->button)
3964         (* callback) (column->button, callback_data);
3965     }
3966 }
3967
3968 /* Returns TRUE if the focus is within the headers, after the focus operation is
3969  * done
3970  */
3971 static gboolean
3972 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
3973                             GtkDirectionType  dir)
3974 {
3975   GtkWidget *focus_child;
3976   GtkContainer *container;
3977
3978   GList *last_column, *first_column;
3979   GList *tmp_list;
3980
3981   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
3982     return FALSE;
3983
3984   focus_child = GTK_CONTAINER (tree_view)->focus_child;
3985   container = GTK_CONTAINER (tree_view);
3986
3987   last_column = g_list_last (tree_view->priv->columns);
3988   while (last_column)
3989     {
3990       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
3991           GTK_TREE_VIEW_COLUMN (last_column->data)->clickable &&
3992           GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable &&
3993           GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
3994         break;
3995       last_column = last_column->prev;
3996     }
3997
3998   /* No headers are visible, or are focusable.  We can't focus in or out.
3999    */
4000   if (last_column == NULL)
4001     return FALSE;
4002
4003   first_column = tree_view->priv->columns;
4004   while (first_column)
4005     {
4006       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
4007           GTK_TREE_VIEW_COLUMN (first_column->data)->clickable &&
4008           GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable &&
4009           GTK_TREE_VIEW_COLUMN (first_column->data)->visible)
4010         break;
4011       first_column = first_column->next;
4012     }
4013
4014   switch (dir)
4015     {
4016     case GTK_DIR_TAB_BACKWARD:
4017     case GTK_DIR_TAB_FORWARD:
4018     case GTK_DIR_UP:
4019     case GTK_DIR_DOWN:
4020       if (focus_child == NULL)
4021         {
4022           if (tree_view->priv->focus_column != NULL)
4023             focus_child = tree_view->priv->focus_column->button;
4024           else
4025             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
4026           gtk_widget_grab_focus (focus_child);
4027           break;
4028         }
4029       return FALSE;
4030
4031     case GTK_DIR_LEFT:
4032     case GTK_DIR_RIGHT:
4033       if (focus_child == NULL)
4034         {
4035           if (tree_view->priv->focus_column != NULL)
4036             focus_child = tree_view->priv->focus_column->button;
4037           else if (dir == GTK_DIR_LEFT)
4038             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
4039           else
4040             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
4041           gtk_widget_grab_focus (focus_child);
4042           break;
4043         }
4044
4045       if (gtk_widget_child_focus (focus_child, dir))
4046         {
4047           /* The focus moves inside the button. */
4048           /* This is probably a great example of bad UI */
4049           break;
4050         }
4051
4052       /* We need to move the focus among the row of buttons. */
4053       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
4054         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
4055           break;
4056
4057       if (tmp_list == first_column && dir == GTK_DIR_LEFT)
4058         {
4059           focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
4060           gtk_widget_grab_focus (focus_child);
4061           break;
4062         }
4063       else if (tmp_list == last_column && dir == GTK_DIR_RIGHT)
4064         {
4065           focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
4066           gtk_widget_grab_focus (focus_child);
4067           break;
4068         }
4069
4070       while (tmp_list)
4071         {
4072           GtkTreeViewColumn *column;
4073
4074           if (dir == GTK_DIR_RIGHT)
4075             tmp_list = tmp_list->next;
4076           else
4077             tmp_list = tmp_list->prev;
4078
4079           if (tmp_list == NULL)
4080             {
4081               g_warning ("Internal button not found");
4082               break;
4083             }
4084           column = tmp_list->data;
4085           if (column->button &&
4086               column->visible &&
4087               GTK_WIDGET_CAN_FOCUS (column->button))
4088             {
4089               focus_child = column->button;
4090               gtk_widget_grab_focus (column->button);
4091               break;
4092             }
4093         }
4094       break;
4095     default:
4096       g_assert_not_reached ();
4097       break;
4098     }
4099
4100   /* if focus child is non-null, we assume it's been set to the current focus child
4101    */
4102   if (focus_child)
4103     {
4104       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
4105         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
4106           break;
4107
4108       tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
4109
4110       /* If the following isn't true, then the view is smaller then the scrollpane.
4111        */
4112       if ((focus_child->allocation.x + focus_child->allocation.width) <=
4113           (tree_view->priv->hadjustment->upper))
4114         {
4115           /* Scroll to the button, if needed */
4116           if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
4117               (focus_child->allocation.x + focus_child->allocation.width))
4118             gtk_adjustment_set_value (tree_view->priv->hadjustment,
4119                                       focus_child->allocation.x + focus_child->allocation.width -
4120                                       tree_view->priv->hadjustment->page_size);
4121           else if (tree_view->priv->hadjustment->value > focus_child->allocation.x)
4122             gtk_adjustment_set_value (tree_view->priv->hadjustment,
4123                                       focus_child->allocation.x);
4124         }
4125     }
4126
4127   return (focus_child != NULL);
4128 }
4129
4130 static gint
4131 gtk_tree_view_focus (GtkWidget        *widget,
4132                      GtkDirectionType  direction)
4133 {
4134   GtkTreeView *tree_view;
4135   GtkWidget *focus_child;
4136   GtkContainer *container;
4137
4138   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
4139   g_return_val_if_fail (GTK_WIDGET_VISIBLE (widget), FALSE);
4140
4141   container = GTK_CONTAINER (widget);
4142   tree_view = GTK_TREE_VIEW (widget);
4143
4144   if (!GTK_WIDGET_IS_SENSITIVE (container))
4145     return FALSE;
4146
4147   focus_child = container->focus_child;
4148
4149   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget));
4150   /* Case 1.  Headers currently have focus. */
4151   if (focus_child)
4152     {
4153       switch (direction)
4154         {
4155         case GTK_DIR_LEFT:
4156         case GTK_DIR_RIGHT:
4157           gtk_tree_view_header_focus (tree_view, direction);
4158           return TRUE;
4159         case GTK_DIR_TAB_BACKWARD:
4160         case GTK_DIR_UP:
4161           return FALSE;
4162         case GTK_DIR_TAB_FORWARD:
4163         case GTK_DIR_DOWN:
4164           if (tree_view->priv->tree == NULL)
4165             return FALSE;
4166           gtk_tree_view_focus_to_cursor (tree_view);
4167           return TRUE;
4168         }
4169     }
4170
4171   /* Case 2. We don't have focus at all. */
4172   if (!GTK_WIDGET_HAS_FOCUS (container))
4173     {
4174       if (tree_view->priv->tree == NULL &&
4175           (direction == GTK_DIR_TAB_BACKWARD ||
4176            direction == GTK_DIR_UP))
4177         return gtk_tree_view_header_focus (tree_view, direction);
4178       if (((direction == GTK_DIR_TAB_FORWARD) ||
4179            (direction == GTK_DIR_RIGHT) ||
4180            (direction == GTK_DIR_DOWN) ||
4181            (direction == GTK_DIR_LEFT)) &&
4182           gtk_tree_view_header_focus (tree_view, direction))
4183         return TRUE;
4184
4185       if (tree_view->priv->tree == NULL)
4186         return FALSE;
4187       gtk_tree_view_focus_to_cursor (tree_view);
4188       return TRUE;
4189     }
4190
4191   /* Case 3. We have focus already. */
4192   if (tree_view->priv->tree == NULL)
4193     return gtk_tree_view_header_focus (tree_view, direction);
4194
4195   if (direction == GTK_DIR_TAB_BACKWARD)
4196     return (gtk_tree_view_header_focus (tree_view, direction));
4197   else if (direction == GTK_DIR_TAB_FORWARD)
4198     return FALSE;
4199
4200   /* Other directions caught by the keybindings */
4201   gtk_tree_view_focus_to_cursor (tree_view);
4202   return TRUE;
4203 }
4204
4205
4206 static void
4207 gtk_tree_view_set_focus_child (GtkContainer *container,
4208                                GtkWidget    *child)
4209 {
4210   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
4211   GList *list;
4212
4213   for (list = tree_view->priv->columns; list; list = list->next)
4214     {
4215       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
4216         {
4217           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
4218           break;
4219         }
4220     }
4221
4222   (* parent_class->set_focus_child) (container, child);
4223 }
4224
4225 static void
4226 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
4227                                GtkAdjustment *hadj,
4228                                GtkAdjustment *vadj)
4229 {
4230   gboolean need_adjust = FALSE;
4231
4232   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
4233
4234   if (hadj)
4235     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
4236   else
4237     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
4238   if (vadj)
4239     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
4240   else
4241     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
4242
4243   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
4244     {
4245       gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->hadjustment), tree_view);
4246       gtk_object_unref (GTK_OBJECT (tree_view->priv->hadjustment));
4247     }
4248
4249   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
4250     {
4251       gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->vadjustment), tree_view);
4252       gtk_object_unref (GTK_OBJECT (tree_view->priv->vadjustment));
4253     }
4254
4255   if (tree_view->priv->hadjustment != hadj)
4256     {
4257       tree_view->priv->hadjustment = hadj;
4258       gtk_object_ref (GTK_OBJECT (tree_view->priv->hadjustment));
4259       gtk_object_sink (GTK_OBJECT (tree_view->priv->hadjustment));
4260
4261       gtk_signal_connect (GTK_OBJECT (tree_view->priv->hadjustment), "value_changed",
4262                           (GtkSignalFunc) gtk_tree_view_adjustment_changed,
4263                           tree_view);
4264       need_adjust = TRUE;
4265     }
4266
4267   if (tree_view->priv->vadjustment != vadj)
4268     {
4269       tree_view->priv->vadjustment = vadj;
4270       gtk_object_ref (GTK_OBJECT (tree_view->priv->vadjustment));
4271       gtk_object_sink (GTK_OBJECT (tree_view->priv->vadjustment));
4272
4273       gtk_signal_connect (GTK_OBJECT (tree_view->priv->vadjustment), "value_changed",
4274                           (GtkSignalFunc) gtk_tree_view_adjustment_changed,
4275                           tree_view);
4276       need_adjust = TRUE;
4277     }
4278
4279   if (need_adjust)
4280     gtk_tree_view_adjustment_changed (NULL, tree_view);
4281 }
4282
4283
4284 static void
4285 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
4286                                 GtkMovementStep    step,
4287                                 gint               count)
4288 {
4289   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
4290   g_return_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
4291                     step == GTK_MOVEMENT_VISUAL_POSITIONS ||
4292                     step == GTK_MOVEMENT_DISPLAY_LINES ||
4293                     step == GTK_MOVEMENT_PAGES ||
4294                     step == GTK_MOVEMENT_BUFFER_ENDS);
4295
4296   if (tree_view->priv->tree == NULL)
4297     return;
4298   gtk_tree_view_stop_editing (tree_view);
4299   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
4300   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
4301
4302   switch (step)
4303     {
4304       /* currently we make no distinction.  When we go bi-di, we need to */
4305     case GTK_MOVEMENT_LOGICAL_POSITIONS:
4306     case GTK_MOVEMENT_VISUAL_POSITIONS:
4307       gtk_tree_view_move_cursor_left_right (tree_view, count);
4308       break;
4309     case GTK_MOVEMENT_DISPLAY_LINES:
4310       gtk_tree_view_move_cursor_up_down (tree_view, count);
4311       break;
4312     case GTK_MOVEMENT_PAGES:
4313       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
4314       break;
4315     case GTK_MOVEMENT_BUFFER_ENDS:
4316       gtk_tree_view_move_cursor_start_end (tree_view, count);
4317       break;
4318     default:
4319       g_assert_not_reached ();
4320     }
4321 }
4322
4323 static void
4324 gtk_tree_view_put (GtkTreeView *tree_view,
4325                    GtkWidget   *child_widget,
4326                    gint         x,
4327                    gint         y,
4328                    gint         width,
4329                    gint         height)
4330 {
4331   GtkTreeViewChild *child;
4332
4333   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
4334   g_return_if_fail (GTK_IS_WIDGET (child_widget));
4335
4336   child = g_new (GtkTreeViewChild, 1);
4337
4338   child->widget = child_widget;
4339   child->x = x;
4340   child->y = y;
4341   child->width = width;
4342   child->height = height;
4343
4344   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
4345
4346   if (GTK_WIDGET_REALIZED (tree_view))
4347     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
4348
4349   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
4350 }
4351
4352 void
4353 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
4354                                   GtkWidget   *widget,
4355                                   gint         x,
4356                                   gint         y,
4357                                   gint         width,
4358                                   gint         height)
4359 {
4360   GtkTreeViewChild *child = NULL;
4361   GList *list;
4362   GdkRectangle allocation;
4363
4364   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
4365   g_return_if_fail (GTK_IS_WIDGET (widget));
4366
4367   for (list = tree_view->priv->children; list; list = list->next)
4368     {
4369       if (((GtkTreeViewChild *)list->data)->widget == widget)
4370         {
4371           child = list->data;
4372           break;
4373         }
4374     }
4375   if (child == NULL)
4376     return;
4377
4378   allocation.x = child->x = x;
4379   allocation.y = child->y = y;
4380   allocation.width = child->width = width;
4381   allocation.height = child->height = height;
4382
4383   if (GTK_WIDGET_REALIZED (widget))
4384     gtk_widget_size_allocate (widget, &allocation);
4385 }
4386
4387
4388 /* TreeModel Callbacks
4389  */
4390
4391 static void
4392 gtk_tree_view_row_changed (GtkTreeModel *model,
4393                              GtkTreePath  *path,
4394                              GtkTreeIter  *iter,
4395                              gpointer      data)
4396 {
4397   GtkTreeView *tree_view = (GtkTreeView *)data;
4398   GtkRBTree *tree;
4399   GtkRBNode *node;
4400   gint height;
4401   gboolean dirty_marked;
4402   gboolean free_path = FALSE;
4403   gint vertical_separator;
4404
4405
4406   g_return_if_fail (path != NULL || iter != NULL);
4407
4408   gtk_widget_style_get (GTK_WIDGET (data), "vertical_separator", &vertical_separator, NULL);
4409
4410   if (path == NULL)
4411     {
4412       path = gtk_tree_model_get_path (model, iter);
4413       free_path = TRUE;
4414     }
4415   else if (iter == NULL)
4416     gtk_tree_model_get_iter (model, iter, path);
4417
4418   if (_gtk_tree_view_find_node (tree_view,
4419                                 path,
4420                                 &tree,
4421                                 &node))
4422     /* We aren't actually showing the node */
4423     goto done;
4424
4425   if (tree == NULL)
4426     goto done;
4427
4428   dirty_marked = gtk_tree_view_discover_dirty_iter (tree_view,
4429                                                     iter,
4430                                                     gtk_tree_path_get_depth (path),
4431                                                     &height,
4432                                                     node);
4433
4434   if (height != -1 &&
4435       GTK_RBNODE_GET_HEIGHT (node) != height + vertical_separator)
4436     {
4437       _gtk_rbtree_node_set_height (tree, node, height + vertical_separator);
4438       gtk_widget_queue_resize (GTK_WIDGET (data));
4439       _gtk_tree_view_update_size (tree_view);
4440       goto done;
4441     }
4442   if (dirty_marked)
4443     {
4444       gtk_widget_queue_resize (GTK_WIDGET (data));
4445     }
4446   else
4447     {
4448       gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
4449     }
4450
4451  done:
4452   if (free_path)
4453     gtk_tree_path_free (path);
4454 }
4455
4456 static void
4457 gtk_tree_view_row_inserted (GtkTreeModel *model,
4458                             GtkTreePath  *path,
4459                             GtkTreeIter  *iter,
4460                             gpointer      data)
4461 {
4462   GtkTreeView *tree_view = (GtkTreeView *) data;
4463   gint *indices;
4464   GtkRBTree *tmptree, *tree;
4465   GtkRBNode *tmpnode = NULL;
4466   gint max_height;
4467   gint depth;
4468   gint i = 0;
4469   gboolean free_path = FALSE;
4470
4471   if (tree_view->priv->tree == NULL)
4472     tree_view->priv->tree = _gtk_rbtree_new ();
4473
4474   tmptree = tree = tree_view->priv->tree;
4475   g_return_if_fail (path != NULL || iter != NULL);
4476
4477   if (path == NULL)
4478     {
4479       path = gtk_tree_model_get_path (model, iter);
4480       free_path = TRUE;
4481     }
4482   else if (iter == NULL)
4483     gtk_tree_model_get_iter (model, iter, path);
4484
4485   /* Update all row-references */
4486   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
4487   depth = gtk_tree_path_get_depth (path);
4488   indices = gtk_tree_path_get_indices (path);
4489
4490   /* First, find the parent tree */
4491   while (i < depth - 1)
4492     {
4493       if (tmptree == NULL)
4494         {
4495           /* We aren't showing the node */
4496           goto done;
4497         }
4498
4499       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
4500       if (tmpnode == NULL)
4501         {
4502           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
4503                      "This possibly means that a GtkTreeModel inserted a child node\n" \
4504                      "before the parent was inserted.");
4505           goto done;
4506         }
4507       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
4508         {
4509           /* FIXME enforce correct behavior on model, probably */
4510           /* In theory, the model should have emitted has_child_toggled here.  We
4511            * try to catch it anyway, just to be safe, in case the model hasn't.
4512            */
4513           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
4514                                                            tree,
4515                                                            tmpnode);
4516           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
4517           gtk_tree_path_free (tmppath);
4518           goto done;
4519         }
4520
4521       tmptree = tmpnode->children;
4522       tree = tmptree;
4523       i++;
4524     }
4525
4526   if (tree == NULL)
4527     goto done;
4528
4529   /* ref the node */
4530   gtk_tree_model_ref_node (tree_view->priv->model, iter);
4531   max_height = gtk_tree_view_insert_iter_height (tree_view,
4532                                                  tree,
4533                                                  iter,
4534                                                  depth);
4535   if (indices[depth - 1] == 0)
4536     {
4537       tmpnode = _gtk_rbtree_find_count (tree, 1);
4538       _gtk_rbtree_insert_before (tree, tmpnode, max_height);
4539     }
4540   else
4541     {
4542       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
4543       _gtk_rbtree_insert_after (tree, tmpnode, max_height);
4544     }
4545
4546   _gtk_tree_view_update_size (tree_view);
4547
4548  done:
4549   if (free_path)
4550     gtk_tree_path_free (path);
4551 }
4552 #include "gtktreemodelsort.h"
4553 static void
4554 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
4555                                      GtkTreePath  *path,
4556                                      GtkTreeIter  *iter,
4557                                      gpointer      data)
4558 {
4559   GtkTreeView *tree_view = (GtkTreeView *)data;
4560   GtkTreeIter real_iter;
4561   gboolean has_child;
4562   GtkRBTree *tree;
4563   GtkRBNode *node;
4564   gboolean free_path = FALSE;
4565
4566   g_return_if_fail (path != NULL || iter != NULL);
4567
4568   if (iter)
4569     real_iter = *iter;
4570
4571   if (path == NULL)
4572     {
4573       path = gtk_tree_model_get_path (model, iter);
4574       free_path = TRUE;
4575     }
4576   else if (iter == NULL)
4577     gtk_tree_model_get_iter (model, &real_iter, path);
4578
4579   if (_gtk_tree_view_find_node (tree_view,
4580                                 path,
4581                                 &tree,
4582                                 &node))
4583     /* We aren't actually showing the node */
4584     goto done;
4585
4586   if (tree == NULL)
4587     goto done;
4588
4589   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
4590   /* Sanity check.
4591    */
4592   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
4593     goto done;
4594
4595   if (has_child)
4596     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
4597   else
4598     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
4599
4600   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
4601     {
4602       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
4603       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
4604         {
4605           GList *list;
4606
4607           for (list = tree_view->priv->columns; list; list = list->next)
4608             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
4609               {
4610                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
4611                 gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data));
4612                 break;
4613               }
4614         }
4615       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
4616     }
4617   else
4618     {
4619       /* FIXME: Just redraw the node */
4620       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4621     }
4622
4623  done:
4624   if (free_path)
4625     gtk_tree_path_free (path);
4626 }
4627
4628 static void
4629 count_children_helper (GtkRBTree *tree,
4630                        GtkRBNode *node,
4631                        gpointer   data)
4632 {
4633   if (node->children)
4634     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
4635   (*((gint *)data))++;
4636 }
4637
4638 static void
4639 gtk_tree_view_row_deleted (GtkTreeModel *model,
4640                            GtkTreePath  *path,
4641                            gpointer      data)
4642 {
4643   GtkTreeView *tree_view = (GtkTreeView *)data;
4644   GtkRBTree *tree;
4645   GtkRBNode *node;
4646   GList *list;
4647   gint selection_changed;
4648
4649   g_return_if_fail (path != NULL);
4650
4651   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
4652
4653   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
4654     return;
4655
4656   if (tree == NULL)
4657     return;
4658
4659   /* Change the selection */
4660   selection_changed = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
4661
4662   for (list = tree_view->priv->columns; list; list = list->next)
4663     if (((GtkTreeViewColumn *)list->data)->visible &&
4664         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
4665       gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data);
4666
4667   /* Ensure we don't have a dangling pointer to a dead node */
4668   ensure_unprelighted (tree_view);
4669
4670   /* If we have a node expanded/collapsed timeout, remove it */
4671   if (tree_view->priv->expand_collapse_timeout != 0)
4672     {
4673       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
4674       tree_view->priv->expand_collapse_timeout = 0;
4675
4676       /* Reset node */
4677       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
4678       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
4679       tree_view->priv->expanded_collapsed_node = NULL;
4680     }
4681
4682   if (tree_view->priv->destroy_count_func)
4683     {
4684       gint child_count = 0;
4685       if (node->children)
4686         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
4687       (* tree_view->priv->destroy_count_func) (tree_view, path, child_count, tree_view->priv->destroy_count_data);
4688     }
4689
4690   if (tree->root->count == 1)
4691     {
4692       if (tree_view->priv->tree == tree)
4693         tree_view->priv->tree = NULL;
4694
4695       _gtk_rbtree_remove (tree);
4696     }
4697   else
4698     {
4699       _gtk_rbtree_remove_node (tree, node);
4700     }
4701
4702   _gtk_tree_view_update_size (GTK_TREE_VIEW (data));
4703
4704   if (selection_changed)
4705     g_signal_emit_by_name (G_OBJECT (tree_view->priv->selection), "changed");
4706 }
4707
4708
4709 static void
4710 gtk_tree_view_rows_reordered (GtkTreeModel *model,
4711                               GtkTreePath  *parent,
4712                               GtkTreeIter  *iter,
4713                               gint         *new_order,
4714                               gpointer      data)
4715 {
4716   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
4717   GtkRBTree *tree;
4718   GtkRBNode *node;
4719   gint len;
4720
4721   len = gtk_tree_model_iter_n_children (model, iter);
4722
4723   if (len < 2)
4724     return;
4725
4726   gtk_tree_row_reference_reordered (G_OBJECT (data),
4727                                     parent,
4728                                     iter,
4729                                     new_order);
4730
4731   if (_gtk_tree_view_find_node (tree_view,
4732                                 parent,
4733                                 &tree,
4734                                 &node))
4735     return;
4736
4737   /* We need to special case the parent path */
4738   if (tree == NULL)
4739     tree = tree_view->priv->tree;
4740   else
4741     tree = node->children;
4742
4743   if (tree == NULL)
4744     return;
4745
4746   /* FIXME: we need to unprelight our tree, if it's prelit. */
4747   _gtk_rbtree_reorder (tree, new_order, len);
4748
4749   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
4750 }
4751
4752
4753 /* Internal tree functions
4754  */
4755
4756
4757 static void
4758 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
4759                                      GtkRBTree         *tree,
4760                                      GtkTreeViewColumn *column,
4761                                      gint              *x1,
4762                                      gint              *x2)
4763 {
4764   GtkTreeViewColumn *tmp_column = NULL;
4765   gint total_width;
4766   GList *list;
4767
4768   if (x1)
4769     *x1 = 0;
4770
4771   if (x2)
4772     *x2 = 0;
4773
4774   total_width = 0;
4775   for (list = tree_view->priv->columns; list; list = list->next)
4776     {
4777       tmp_column = list->data;
4778
4779       if (tmp_column == column)
4780         break;
4781
4782       if (tmp_column->visible)
4783         total_width += tmp_column->width;
4784     }
4785
4786   if (tmp_column != column)
4787     {
4788       g_warning (G_STRLOC": passed-in column isn't in the tree");
4789       return;
4790     }
4791
4792   if (x1)
4793     *x1 = total_width;
4794
4795   if (x2)
4796     {
4797       if (column->visible)
4798         *x2 = total_width + column->width;
4799       else
4800         *x2 = total_width; /* width of 0 */
4801     }
4802 }
4803 static void
4804 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
4805                                 GtkRBTree   *tree,
4806                                 gint        *x1,
4807                                 gint        *x2)
4808 {
4809   gint x_offset = 0;
4810   GList *list;
4811   GtkTreeViewColumn *tmp_column = NULL;
4812   gint total_width;
4813   gboolean indent_expanders;
4814
4815   total_width = 0;
4816   for (list = tree_view->priv->columns; list; list = list->next)
4817     {
4818       tmp_column = list->data;
4819
4820       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
4821         {
4822           x_offset = total_width;
4823           break;
4824         }
4825
4826       if (tmp_column->visible)
4827         total_width += tmp_column->width;
4828     }
4829
4830   gtk_widget_style_get (GTK_WIDGET (tree_view),
4831                         "indent_expanders", &indent_expanders,
4832                         NULL);
4833
4834   if (indent_expanders)
4835     x_offset += tree_view->priv->tab_offset * _gtk_rbtree_get_depth (tree);
4836
4837   if (x1)
4838     *x1 = x_offset;
4839
4840   if (tmp_column && tmp_column->visible)
4841     {
4842       /* +1 because x2 isn't included in the range. */
4843       if (x2)
4844         *x2 = x_offset + tree_view->priv->tab_offset + 1;
4845     }
4846   else
4847     {
4848       /* return an empty range, the expander column is hidden */
4849       if (x2)
4850         *x2 = x_offset;
4851     }
4852 }
4853
4854 static gint
4855 gtk_tree_view_insert_iter_height (GtkTreeView *tree_view,
4856                                   GtkRBTree   *tree,
4857                                   GtkTreeIter *iter,
4858                                   gint         depth)
4859 {
4860   GtkTreeViewColumn *column;
4861   GList *list;
4862   gint max_height = 0;
4863   gint vertical_separator;
4864
4865   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
4866
4867   /* do stuff with node */
4868   for (list = tree_view->priv->columns; list; list = list->next)
4869     {
4870       gint height = 0, width = 0;
4871       column = list->data;
4872
4873       if (!column->visible)
4874         continue;
4875
4876       if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
4877         continue;
4878
4879       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
4880                                                gtk_tree_model_iter_has_child (tree_view->priv->model, iter),
4881                                                FALSE);
4882
4883       gtk_tree_view_column_cell_get_size (column, NULL, NULL, NULL, &width, &height);
4884       max_height = MAX (max_height, vertical_separator + height);
4885
4886       if (gtk_tree_view_is_expander_column (tree_view, column) &&
4887           TREE_VIEW_DRAW_EXPANDERS (tree_view))
4888         _gtk_tree_view_column_set_width (column,
4889                                         MAX (column->width, depth * tree_view->priv->tab_offset + width));
4890       else
4891         _gtk_tree_view_column_set_width (column,
4892                                         MAX (column->width, width));
4893     }
4894   return max_height;
4895 }
4896
4897 static void
4898 gtk_tree_view_build_tree (GtkTreeView *tree_view,
4899                           GtkRBTree   *tree,
4900                           GtkTreeIter *iter,
4901                           gint         depth,
4902                           gboolean     recurse,
4903                           gboolean     calc_bounds)
4904 {
4905   GtkRBNode *temp = NULL;
4906   gint max_height;
4907
4908   do
4909     {
4910       max_height = 0;
4911       if (calc_bounds)
4912         max_height = gtk_tree_view_insert_iter_height (tree_view,
4913                                                        tree,
4914                                                        iter,
4915                                                        depth);
4916
4917       gtk_tree_model_ref_node (tree_view->priv->model, iter);
4918       temp = _gtk_rbtree_insert_after (tree, temp, max_height);
4919       if (recurse)
4920         {
4921           GtkTreeIter child;
4922
4923           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
4924             {
4925               temp->children = _gtk_rbtree_new ();
4926               temp->children->parent_tree = tree;
4927               temp->children->parent_node = temp;
4928               gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse, calc_bounds);
4929             }
4930         }
4931       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
4932         {
4933           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
4934             temp->flags ^= GTK_RBNODE_IS_PARENT;
4935           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
4936         }
4937     }
4938   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
4939 }
4940
4941 static void
4942 gtk_tree_view_calc_size (GtkTreeView *tree_view,
4943                          GtkRBTree   *tree,
4944                          GtkTreeIter *iter,
4945                          gint         depth)
4946 {
4947   GtkRBNode *temp;
4948   GtkTreeIter child;
4949   GList *list;
4950   GtkTreeViewColumn *column;
4951   gint max_height;
4952   gint vertical_separator;
4953   gint horizontal_separator;
4954   TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
4955
4956   gtk_widget_style_get (GTK_WIDGET (tree_view),
4957                         "vertical_separator", &vertical_separator,
4958                         "horizontal_separator", &horizontal_separator,
4959                         NULL);
4960
4961   temp = tree->root;
4962   while (temp->left != tree->nil)
4963     temp = temp->left;
4964
4965   do
4966     {
4967       max_height = 0;
4968       /* Do stuff with node */
4969       for (list = tree_view->priv->columns; list; list = list->next)
4970         {
4971           gint height = 0, width = 0;
4972           column = list->data;
4973
4974           if (!column->visible)
4975             continue;
4976
4977           gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
4978                                                    GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_IS_PARENT),
4979                                                    temp->children?TRUE:FALSE);
4980           gtk_tree_view_column_cell_get_size (column, NULL, NULL, NULL, &width, &height);
4981           max_height = MAX (max_height, vertical_separator + height);
4982
4983           /* FIXME: I'm getting the width of all nodes here. )-: */
4984           if (column->dirty == FALSE)
4985             continue;
4986
4987           if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
4988             {
4989               continue;
4990             }
4991           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4992               TREE_VIEW_DRAW_EXPANDERS (tree_view))
4993             _gtk_tree_view_column_set_width (column,
4994                                              MAX (column->width, depth * tree_view->priv->tab_offset + width + horizontal_separator));
4995           else
4996             _gtk_tree_view_column_set_width (column, MAX (column->width, width + horizontal_separator));
4997         }
4998
4999       _gtk_rbtree_node_set_height (tree, temp, max_height);
5000
5001       if (temp->children != NULL &&
5002           gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
5003         gtk_tree_view_calc_size (tree_view, temp->children, &child, depth + 1);
5004       temp = _gtk_rbtree_next (tree, temp);
5005     }
5006   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
5007 }
5008
5009 /* If height is non-NULL, then we set it to be the new height.  if it's all
5010  * dirty, then height is -1.  We know we'll remeasure dirty rows, anyways.
5011  */
5012 static gboolean
5013 gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
5014                                    GtkTreeIter *iter,
5015                                    gint         depth,
5016                                    gint        *height,
5017                                    GtkRBNode   *node)
5018 {
5019   GtkTreeViewColumn *column;
5020   GList *list;
5021   gboolean retval = FALSE;
5022   gint tmpheight;
5023   gint horizontal_separator;
5024
5025   gtk_widget_style_get (GTK_WIDGET (tree_view),
5026                         "horizontal_separator", &horizontal_separator,
5027                         NULL);
5028
5029
5030   if (height)
5031     *height = -1;
5032
5033   for (list = tree_view->priv->columns; list; list = list->next)
5034     {
5035       gint width;
5036       column = list->data;
5037       if (column->dirty == TRUE)
5038         continue;
5039       if (height == NULL && column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
5040         continue;
5041       if (!column->visible)
5042         continue;
5043
5044       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5045                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5046                                                node->children?TRUE:FALSE);
5047
5048       if (height)
5049         {
5050           gtk_tree_view_column_cell_get_size (column,
5051                                               NULL, NULL, NULL,
5052                                               &width, &tmpheight);
5053           *height = MAX (*height, tmpheight);
5054         }
5055       else
5056         {
5057           gtk_tree_view_column_cell_get_size (column,
5058                                               NULL, NULL, NULL,
5059                                               &width, NULL);
5060         }
5061
5062       if (gtk_tree_view_is_expander_column (tree_view, column) &&
5063           TREE_VIEW_DRAW_EXPANDERS (tree_view))
5064         {
5065           if (depth * tree_view->priv->tab_offset + horizontal_separator + width > column->requested_width)
5066             {
5067               gtk_tree_view_column_cell_set_dirty (column);
5068               retval = TRUE;
5069             }
5070         }
5071       else
5072         {
5073           if (horizontal_separator + width > column->requested_width)
5074             {
5075               gtk_tree_view_column_cell_set_dirty (column);
5076               retval = TRUE;
5077             }
5078         }
5079     }
5080
5081   return retval;
5082 }
5083
5084 static void
5085 gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
5086                               GtkRBTree   *tree,
5087                               GtkTreeIter *iter,
5088                               gint         depth)
5089 {
5090   GtkRBNode *temp = tree->root;
5091   GtkTreeViewColumn *column;
5092   GList *list;
5093   GtkTreeIter child;
5094   gboolean is_all_dirty;
5095
5096   TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
5097
5098   while (temp->left != tree->nil)
5099     temp = temp->left;
5100
5101   do
5102     {
5103       TREE_VIEW_INTERNAL_ASSERT_VOID (temp != NULL);
5104       is_all_dirty = TRUE;
5105       for (list = tree_view->priv->columns; list; list = list->next)
5106         {
5107           column = list->data;
5108           if (column->dirty == FALSE)
5109             {
5110               is_all_dirty = FALSE;
5111               break;
5112             }
5113         }
5114
5115       if (is_all_dirty)
5116         return;
5117
5118       gtk_tree_view_discover_dirty_iter (tree_view,
5119                                          iter,
5120                                          depth,
5121                                          NULL,
5122                                          temp);
5123       if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter) &&
5124           temp->children != NULL)
5125         gtk_tree_view_discover_dirty (tree_view, temp->children, &child, depth + 1);
5126       temp = _gtk_rbtree_next (tree, temp);
5127     }
5128   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
5129 }
5130
5131
5132 /**
5133  * gtk_tree_view_check_dirty_and_clean:
5134  * @tree_view: A #GtkTreeView
5135  *
5136  * Does all the actual sizing for
5137  **/
5138 static void
5139 gtk_tree_view_check_dirty_and_clean (GtkTreeView *tree_view)
5140 {
5141   GtkTreePath *path;
5142   gboolean dirty = FALSE;
5143   GList *list;
5144   GtkTreeViewColumn *column;
5145   GtkTreeIter iter;
5146
5147   for (list = tree_view->priv->columns; list; list = list->next)
5148     {
5149       column = list->data;
5150       if (column->dirty)
5151         {
5152           dirty = TRUE;
5153           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
5154             {
5155               gint w = 1;
5156
5157               if (column->button)
5158                 w = MAX (w, column->button->requisition.width);
5159
5160               _gtk_tree_view_column_set_width (column, w);
5161             }
5162         }
5163     }
5164
5165   if (dirty == FALSE)
5166     return;
5167
5168   if (tree_view->priv->model == NULL)
5169     return;
5170
5171   path = gtk_tree_path_new_root ();
5172   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
5173     {
5174       gtk_tree_view_calc_size (tree_view, tree_view->priv->tree, &iter, 1);
5175       _gtk_tree_view_update_size (tree_view);
5176     }
5177
5178   gtk_tree_path_free (path);
5179
5180   for (list = tree_view->priv->columns; list; list = list->next)
5181     {
5182       column = list->data;
5183       column->dirty = FALSE;
5184     }
5185 }
5186
5187 /* Make sure the node is visible vertically */
5188 static void
5189 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
5190                                   GtkRBTree   *tree,
5191                                   GtkRBNode   *node)
5192 {
5193   gint offset;
5194
5195   /* We process updates because we want to clear old selected items when we scroll.
5196    * if this is removed, we get a "selection streak" at the bottom. */
5197   if (GTK_WIDGET_REALIZED (tree_view))
5198     gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
5199
5200   offset = _gtk_rbtree_node_find_offset (tree, node);
5201
5202   /* we reverse the order, b/c in the unusual case of the
5203    * node's height being taller then the visible area, we'd rather
5204    * have the node flush to the top
5205    */
5206   if (offset + GTK_RBNODE_GET_HEIGHT (node) >
5207       tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size)
5208     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
5209                               offset + GTK_RBNODE_GET_HEIGHT (node) -
5210                               tree_view->priv->vadjustment->page_size);
5211   if (offset < tree_view->priv->vadjustment->value)
5212     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
5213                               offset);
5214
5215 }
5216
5217 static void
5218 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
5219                                     GtkTreeViewColumn *column)
5220 {
5221   if (column == NULL)
5222     return;
5223   if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
5224       (column->button->allocation.x + column->button->allocation.width))
5225     gtk_adjustment_set_value (tree_view->priv->hadjustment,
5226                               column->button->allocation.x + column->button->allocation.width -
5227                               tree_view->priv->hadjustment->page_size);
5228   else if (tree_view->priv->hadjustment->value > column->button->allocation.x)
5229     gtk_adjustment_set_value (tree_view->priv->hadjustment,
5230                               column->button->allocation.x);
5231 }
5232
5233 /* This function could be more efficient.  I'll optimize it if profiling seems
5234  * to imply that it is important */
5235 GtkTreePath *
5236 _gtk_tree_view_find_path (GtkTreeView *tree_view,
5237                           GtkRBTree   *tree,
5238                           GtkRBNode   *node)
5239 {
5240   GtkTreePath *path;
5241   GtkRBTree *tmp_tree;
5242   GtkRBNode *tmp_node, *last;
5243   gint count;
5244
5245   path = gtk_tree_path_new ();
5246
5247   g_return_val_if_fail (node != NULL, path);
5248   g_return_val_if_fail (node != tree->nil, path);
5249
5250   count = 1 + node->left->count;
5251
5252   last = node;
5253   tmp_node = node->parent;
5254   tmp_tree = tree;
5255   while (tmp_tree)
5256     {
5257       while (tmp_node != tmp_tree->nil)
5258         {
5259           if (tmp_node->right == last)
5260             count += 1 + tmp_node->left->count;
5261           last = tmp_node;
5262           tmp_node = tmp_node->parent;
5263         }
5264       gtk_tree_path_prepend_index (path, count - 1);
5265       last = tmp_tree->parent_node;
5266       tmp_tree = tmp_tree->parent_tree;
5267       if (last)
5268         {
5269           count = 1 + last->left->count;
5270           tmp_node = last->parent;
5271         }
5272     }
5273   return path;
5274 }
5275
5276 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
5277  * invalid (ie. points to a node that's not in the tree), *tree and *node are
5278  * both set to NULL.
5279  */
5280 gboolean
5281 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
5282                           GtkTreePath  *path,
5283                           GtkRBTree   **tree,
5284                           GtkRBNode   **node)
5285 {
5286   GtkRBNode *tmpnode = NULL;
5287   GtkRBTree *tmptree = tree_view->priv->tree;
5288   gint *indices = gtk_tree_path_get_indices (path);
5289   gint depth = gtk_tree_path_get_depth (path);
5290   gint i = 0;
5291
5292   *node = NULL;
5293   *tree = NULL;
5294
5295   if (depth == 0 || tmptree == NULL)
5296     return FALSE;
5297   do
5298     {
5299       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
5300       ++i;
5301       if (tmpnode == NULL)
5302         {
5303           *tree = NULL;
5304           *node = NULL;
5305           return FALSE;
5306         }
5307       if (i >= depth)
5308         {
5309           *tree = tmptree;
5310           *node = tmpnode;
5311           return FALSE;
5312         }
5313       *tree = tmptree;
5314       *node = tmpnode;
5315       tmptree = tmpnode->children;
5316       if (tmptree == NULL)
5317         return TRUE;
5318     }
5319   while (1);
5320 }
5321
5322 static gboolean
5323 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
5324                                   GtkTreeViewColumn *column)
5325 {
5326   GList *list;
5327
5328   if (tree_view->priv->expander_column != NULL)
5329     {
5330       if (tree_view->priv->expander_column == column)
5331         return TRUE;
5332       return FALSE;
5333     }
5334   else
5335     {
5336       for (list = tree_view->priv->columns; list; list = list->next)
5337         if (((GtkTreeViewColumn *)list->data)->visible)
5338           break;
5339       if (list && list->data == column)
5340         return TRUE;
5341     }
5342   return FALSE;
5343 }
5344
5345 static void
5346 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
5347                                 guint           keyval,
5348                                 guint           modmask,
5349                                 GtkMovementStep step,
5350                                 gint            count)
5351 {
5352
5353   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
5354                                 "move_cursor", 2,
5355                                 GTK_TYPE_ENUM, step,
5356                                 GTK_TYPE_INT, count);
5357
5358   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
5359                                 "move_cursor", 2,
5360                                 GTK_TYPE_ENUM, step,
5361                                 GTK_TYPE_INT, count);
5362
5363   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
5364    return;
5365
5366   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
5367                                 "move_cursor", 2,
5368                                 GTK_TYPE_ENUM, step,
5369                                 GTK_TYPE_INT, count);
5370
5371   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
5372                                 "move_cursor", 2,
5373                                 GTK_TYPE_ENUM, step,
5374                                 GTK_TYPE_INT, count);
5375 }
5376
5377 static gint
5378 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
5379                                  GtkTreeIter  *iter,
5380                                  GtkRBTree    *tree,
5381                                  GtkRBNode    *node)
5382 {
5383   gint retval = FALSE;
5384   do
5385     {
5386       g_return_val_if_fail (node != NULL, FALSE);
5387
5388       if (node->children)
5389         {
5390           GtkTreeIter child;
5391           GtkRBTree *new_tree;
5392           GtkRBNode *new_node;
5393
5394           new_tree = node->children;
5395           new_node = new_tree->root;
5396
5397           while (new_node && new_node->left != new_tree->nil)
5398             new_node = new_node->left;
5399
5400           g_return_val_if_fail (gtk_tree_model_iter_children (model, &child, iter), FALSE);
5401           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
5402         }
5403
5404       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
5405         retval = TRUE;
5406       gtk_tree_model_unref_node (model, iter);
5407       node = _gtk_rbtree_next (tree, node);
5408     }
5409   while (gtk_tree_model_iter_next (model, iter));
5410
5411   return retval;
5412 }
5413
5414 static gint
5415 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
5416                                               GtkRBTree   *tree)
5417 {
5418   GtkTreeIter iter;
5419   GtkTreePath *path;
5420   GtkRBNode *node;
5421   gint retval;
5422
5423   if (!tree)
5424     return FALSE;
5425
5426   node = tree->root;
5427   while (node && node->left != tree->nil)
5428     node = node->left;
5429
5430   g_return_val_if_fail (node != NULL, FALSE);
5431   path = _gtk_tree_view_find_path (tree_view, tree, node);
5432   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
5433                            &iter, path);
5434   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
5435   gtk_tree_path_free (path);
5436
5437   return retval;
5438 }
5439
5440 static void
5441 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
5442                                     GtkTreeViewColumn *column)
5443 {
5444   GtkTreeViewColumn *left_column;
5445   GtkTreeViewColumn *cur_column = NULL;
5446   GtkTreeViewColumnReorder *reorder;
5447
5448   GList *tmp_list;
5449   gint left;
5450
5451   /* We want to precalculate the motion list such that we know what column slots
5452    * are available.
5453    */
5454   left_column = NULL;
5455
5456   /* First, identify all possible drop spots */
5457   tmp_list = tree_view->priv->columns;
5458
5459   while (tmp_list)
5460     {
5461       g_assert (tmp_list);
5462
5463       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5464       tmp_list = tmp_list->next;
5465
5466       if (cur_column->visible == FALSE)
5467         continue;
5468
5469       /* If it's not the column moving and func tells us to skip over the column, we continue. */
5470       if (left_column != column && cur_column != column &&
5471           tree_view->priv->column_drop_func &&
5472           ! (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5473         {
5474           left_column = cur_column;
5475           continue;
5476         }
5477       reorder = g_new (GtkTreeViewColumnReorder, 1);
5478       reorder->left_column = left_column;
5479       left_column = reorder->right_column = cur_column;
5480
5481       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
5482     }
5483
5484   /* Add the last one */
5485   if (tree_view->priv->column_drop_func == NULL ||
5486       ((left_column != column) &&
5487        (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data)))
5488     {
5489       reorder = g_new (GtkTreeViewColumnReorder, 1);
5490       reorder->left_column = left_column;
5491       reorder->right_column = NULL;
5492       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
5493     }
5494
5495   /* We quickly check to see if it even makes sense to reorder columns. */
5496   /* If there is nothing that can be moved, then we return */
5497
5498   if (tree_view->priv->column_drag_info == NULL)
5499     return;
5500
5501   /* We know there are always 2 slots possbile, as you can always return column. */
5502   /* If that's all there is, return */
5503   if (tree_view->priv->column_drag_info->next->next == NULL &&
5504       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
5505       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column)
5506     {
5507       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
5508         g_free (tmp_list->data);
5509       g_list_free (tree_view->priv->column_drag_info);
5510       tree_view->priv->column_drag_info = NULL;
5511       return;
5512     }
5513   /* We fill in the ranges for the columns, now that we've isolated them */
5514   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
5515
5516   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
5517     {
5518       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
5519
5520       reorder->left_align = left;
5521       if (tmp_list->next != NULL)
5522         {
5523           g_assert (tmp_list->next->data);
5524           left = reorder->right_align = (reorder->right_column->button->allocation.x +
5525                                          reorder->right_column->button->allocation.width +
5526                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
5527         }
5528       else
5529         {
5530           gint width;
5531
5532           gdk_window_get_size (tree_view->priv->header_window, &width, NULL);
5533           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
5534         }
5535     }
5536 }
5537
5538 void
5539 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
5540                                   GtkTreeViewColumn *column)
5541 {
5542   GdkEvent send_event;
5543   GtkAllocation allocation;
5544   gint x, y, width, height;
5545
5546   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
5547
5548   gtk_tree_view_set_column_drag_info (tree_view, column);
5549
5550   if (tree_view->priv->column_drag_info == NULL)
5551     return;
5552
5553   if (tree_view->priv->drag_window == NULL)
5554     {
5555       GdkWindowAttr attributes;
5556       guint attributes_mask;
5557
5558       attributes.window_type = GDK_WINDOW_CHILD;
5559       attributes.wclass = GDK_INPUT_OUTPUT;
5560       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
5561       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
5562       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
5563       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
5564
5565       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
5566                                                      &attributes,
5567                                                      attributes_mask);
5568       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
5569     }
5570
5571   gdk_pointer_ungrab (GDK_CURRENT_TIME);
5572   gdk_keyboard_ungrab (GDK_CURRENT_TIME);
5573
5574   gtk_grab_remove (column->button);
5575
5576   send_event.crossing.type = GDK_LEAVE_NOTIFY;
5577   send_event.crossing.send_event = TRUE;
5578   send_event.crossing.window = column->button->window;
5579   send_event.crossing.subwindow = NULL;
5580   send_event.crossing.detail = GDK_NOTIFY_ANCESTOR;
5581   send_event.crossing.time = GDK_CURRENT_TIME;
5582
5583   gtk_propagate_event (column->button, &send_event);
5584
5585   send_event.button.type = GDK_BUTTON_RELEASE;
5586   send_event.button.window = GDK_ROOT_PARENT ();
5587   send_event.button.send_event = TRUE;
5588   send_event.button.time = GDK_CURRENT_TIME;
5589   send_event.button.x = -1;
5590   send_event.button.y = -1;
5591   send_event.button.axes = NULL;
5592   send_event.button.state = 0;
5593   send_event.button.button = 1;
5594   send_event.button.device = gdk_device_get_core_pointer ();
5595   send_event.button.x_root = 0;
5596   send_event.button.y_root = 0;
5597
5598   gtk_propagate_event (column->button, &send_event);
5599
5600   gdk_window_move_resize (tree_view->priv->drag_window,
5601                           column->button->allocation.x,
5602                           column->button->allocation.y + column->button->allocation.height,
5603                           column->button->allocation.width,
5604                           column->button->allocation.height);
5605   gdk_window_reparent (column->button->window, tree_view->priv->drag_window, 0, 0);
5606   tree_view->priv->drag_column_x = column->button->allocation.x;
5607   allocation = column->button->allocation;
5608   allocation.x = 0;
5609   gtk_widget_size_allocate (column->button, &allocation);
5610   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
5611
5612   tree_view->priv->drag_column = column;
5613   gdk_window_show (tree_view->priv->drag_window);
5614
5615   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
5616   gdk_window_get_size (tree_view->priv->header_window, &width, &height);
5617
5618   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5619   while (gtk_events_pending ())
5620     gtk_main_iteration ();
5621
5622   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
5623   gdk_pointer_grab (tree_view->priv->drag_window,
5624                     FALSE,
5625                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
5626                     NULL, NULL, GDK_CURRENT_TIME);
5627   gdk_keyboard_grab (tree_view->priv->drag_window,
5628                      FALSE,
5629                      GDK_CURRENT_TIME);
5630
5631 }
5632
5633 static void
5634 gtk_tree_view_queue_draw_arrow (GtkTreeView      *tree_view,
5635                                 GtkRBTree        *tree,
5636                                 GtkRBNode        *node,
5637                                 GdkRectangle     *clip_rect)
5638 {
5639   GdkRectangle rect;
5640
5641   if (!GTK_WIDGET_REALIZED (tree_view))
5642     return;
5643
5644   rect.x = 0;
5645   rect.width = MAX (tree_view->priv->tab_offset, GTK_WIDGET (tree_view)->allocation.width);
5646
5647   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
5648   rect.height = BACKGROUND_HEIGHT (node);
5649
5650   if (clip_rect)
5651     {
5652       GdkRectangle new_rect;
5653
5654       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
5655
5656       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
5657     }
5658   else
5659     {
5660       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
5661     }
5662 }
5663
5664 static void
5665 gtk_tree_view_queue_draw_node (GtkTreeView  *tree_view,
5666                                GtkRBTree    *tree,
5667                                GtkRBNode    *node,
5668                                GdkRectangle *clip_rect)
5669 {
5670   GdkRectangle rect;
5671
5672   if (!GTK_WIDGET_REALIZED (tree_view))
5673     return;
5674
5675   rect.x = 0;
5676   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
5677
5678   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
5679   rect.height = BACKGROUND_HEIGHT (node);
5680
5681   if (clip_rect)
5682     {
5683       GdkRectangle new_rect;
5684
5685       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
5686
5687       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
5688     }
5689   else
5690     {
5691       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
5692     }
5693 }
5694
5695 static void
5696 gtk_tree_view_queue_draw_path (GtkTreeView      *tree_view,
5697                                GtkTreePath      *path,
5698                                GdkRectangle     *clip_rect)
5699 {
5700   GtkRBTree *tree = NULL;
5701   GtkRBNode *node = NULL;
5702
5703   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5704
5705   if (tree)
5706     gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
5707 }
5708
5709 /* x and y are the mouse position
5710  */
5711 static void
5712 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
5713                           GtkRBTree   *tree,
5714                           GtkRBNode   *node,
5715                           gint         x,
5716                           gint         y)
5717 {
5718   GdkRectangle area;
5719   GtkStateType state;
5720   GtkWidget *widget;
5721   gint x_offset = 0;
5722   gint vertical_separator;
5723   gint expander_size;
5724   GtkExpanderStyle expander_style;
5725
5726   gtk_widget_style_get (GTK_WIDGET (tree_view),
5727                         "vertical_separator", &vertical_separator,
5728                         "expander_size", &expander_size,
5729                         NULL);
5730
5731   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
5732     return;
5733
5734   widget = GTK_WIDGET (tree_view);
5735
5736   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, NULL);
5737
5738   area.x = x_offset;
5739   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
5740   area.width = expander_size + 2;
5741   area.height = CELL_HEIGHT (node, vertical_separator);
5742
5743   if (node == tree_view->priv->button_pressed_node)
5744     {
5745       if (x >= area.x && x <= (area.x + area.width) &&
5746           y >= area.y && y <= (area.y + area.height))
5747         state = GTK_STATE_ACTIVE;
5748       else
5749         state = GTK_STATE_NORMAL;
5750     }
5751   else
5752     {
5753       if (node == tree_view->priv->prelight_node &&
5754           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
5755         state = GTK_STATE_PRELIGHT;
5756       else
5757         state = GTK_STATE_NORMAL;
5758     }
5759
5760   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
5761     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
5762   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
5763     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
5764   else if (node->children != NULL)
5765     expander_style = GTK_EXPANDER_EXPANDED;
5766   else
5767     expander_style = GTK_EXPANDER_COLLAPSED;
5768
5769   gtk_paint_expander (widget->style,
5770                       tree_view->priv->bin_window,
5771                       state,
5772                       &area,
5773                       widget,
5774                       "treeview",
5775                       area.x + area.width / 2,
5776                       area.y + area.height / 2,
5777                       expander_style);
5778 }
5779
5780
5781 static void
5782 _gtk_tree_view_update_col_width (GtkTreeView *tree_view)
5783 {
5784   GList *list, *last_column;
5785   GtkTreeViewColumn *column;
5786   gint width = 0;
5787
5788   for (last_column = g_list_last (tree_view->priv->columns);
5789        last_column &&
5790          !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
5791          GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
5792        last_column = last_column->prev)
5793     ;
5794
5795   if (last_column == NULL)
5796     return;
5797
5798   for (list = tree_view->priv->columns; list != last_column; list = list->next)
5799     {
5800       column = GTK_TREE_VIEW_COLUMN (list->data);
5801       if (! column->visible)
5802         continue;
5803
5804       width += column->width;
5805       column->width = (CLAMP (column->width, (column->min_width!=-1)?column->min_width:column->width, (column->max_width!=-1)?column->max_width:column->width));
5806     }
5807   column = GTK_TREE_VIEW_COLUMN (last_column->data);
5808   column->width = MAX (GTK_WIDGET (tree_view)->allocation.width, tree_view->priv->width) - width;
5809 }
5810
5811 static void
5812 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
5813
5814 {
5815   GtkTreePath *cursor_path;
5816
5817   if ((tree_view->priv->tree == NULL) ||
5818       (! GTK_WIDGET_REALIZED (tree_view)))
5819     return;
5820
5821   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
5822   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5823
5824   cursor_path = NULL;
5825   if (tree_view->priv->cursor)
5826     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
5827
5828   if (cursor_path == NULL)
5829     {
5830       cursor_path = gtk_tree_path_new_root ();
5831       gtk_tree_row_reference_free (tree_view->priv->cursor);
5832       tree_view->priv->cursor = NULL;
5833
5834       if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
5835         gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE);
5836       else
5837         gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
5838     }
5839   gtk_tree_path_free (cursor_path);
5840   if (tree_view->priv->focus_column == NULL)
5841     {
5842       GList *list;
5843       for (list = tree_view->priv->columns; list; list = list->next)
5844         {
5845           if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
5846             {
5847               tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
5848               break;
5849             }
5850         }
5851     }
5852 }
5853
5854 static void
5855 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
5856                                    gint         count)
5857 {
5858   GtkRBTree *cursor_tree = NULL;
5859   GtkRBNode *cursor_node = NULL;
5860   GtkRBTree *new_cursor_tree = NULL;
5861   GtkRBNode *new_cursor_node = NULL;
5862   GtkTreePath *cursor_path = NULL;
5863
5864   cursor_path = NULL;
5865   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
5866     /* FIXME: we lost the cursor; should we get the first? */
5867     return;
5868
5869   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
5870   _gtk_tree_view_find_node (tree_view, cursor_path,
5871                             &cursor_tree, &cursor_node);
5872   gtk_tree_path_free (cursor_path);
5873
5874   if (cursor_tree == NULL)
5875     /* FIXME: we lost the cursor; should we get the first? */
5876     return;
5877   if (count == -1)
5878     _gtk_rbtree_prev_full (cursor_tree, cursor_node,
5879                            &new_cursor_tree, &new_cursor_node);
5880   else
5881     _gtk_rbtree_next_full (cursor_tree, cursor_node,
5882                            &new_cursor_tree, &new_cursor_node);
5883
5884   if (new_cursor_node)
5885     {
5886       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
5887       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
5888       gtk_tree_path_free (cursor_path);
5889     }
5890   else
5891     {
5892       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
5893     }
5894
5895   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5896 }
5897
5898 static void
5899 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
5900                                         gint         count)
5901 {
5902   GtkRBTree *cursor_tree = NULL;
5903   GtkRBNode *cursor_node = NULL;
5904   GtkTreePath *cursor_path = NULL;
5905   gint y;
5906   gint vertical_separator;
5907
5908   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
5909     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
5910   else
5911     /* This is sorta weird.  Focus in should give us a cursor */
5912     return;
5913
5914   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
5915   _gtk_tree_view_find_node (tree_view, cursor_path,
5916                             &cursor_tree, &cursor_node);
5917
5918   gtk_tree_path_free (cursor_path);
5919
5920   if (cursor_tree == NULL)
5921     /* FIXME: we lost the cursor.  Should we try to get one? */
5922     return;
5923   g_return_if_fail (cursor_node != NULL);
5924
5925   y = CELL_FIRST_PIXEL (tree_view, cursor_tree, cursor_node, vertical_separator);
5926   y += count * tree_view->priv->vadjustment->page_size;
5927   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
5928
5929   _gtk_rbtree_find_offset (tree_view->priv->tree, y, &cursor_tree, &cursor_node);
5930   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
5931   g_return_if_fail (cursor_path != NULL);
5932   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
5933 }
5934
5935 static void
5936 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
5937                                       gint         count)
5938 {
5939   GtkRBTree *cursor_tree = NULL;
5940   GtkRBNode *cursor_node = NULL;
5941   GtkTreePath *cursor_path = NULL;
5942   GtkTreeViewColumn *column;
5943   GtkTreeIter iter;
5944   GList *list;
5945   gboolean found_column = FALSE;
5946
5947   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
5948     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
5949   else
5950     return;
5951
5952   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
5953   if (cursor_tree == NULL)
5954     return;
5955   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
5956     {
5957       gtk_tree_path_free (cursor_path);
5958       return;
5959     }
5960   gtk_tree_path_free (cursor_path);
5961
5962   list = tree_view->priv->columns;
5963   if (tree_view->priv->focus_column)
5964     {
5965       for (list = tree_view->priv->columns; list; list = list->next)
5966         {
5967           if (list->data == tree_view->priv->focus_column)
5968             break;
5969         }
5970     }
5971
5972   while (list)
5973     {
5974       column = list->data;
5975       if (column->visible == FALSE)
5976         goto loop_end;
5977
5978       gtk_tree_view_column_cell_set_cell_data (column,
5979                                                tree_view->priv->model,
5980                                                &iter,
5981                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
5982                                                cursor_node->children?TRUE:FALSE);
5983       if (gtk_tree_view_column_cell_focus (column, count))
5984         {
5985           tree_view->priv->focus_column = column;
5986           found_column = TRUE;
5987           break;
5988         }
5989     loop_end:
5990       if (count == 1)
5991         list = list->next;
5992       else
5993         list = list->prev;
5994     }
5995
5996   if (found_column)
5997     {
5998       gtk_tree_view_queue_draw_node (tree_view,
5999                                      cursor_tree,
6000                                      cursor_node,
6001                                      NULL);
6002       g_signal_emit (G_OBJECT (tree_view), tree_view_signals[CURSOR_CHANGED], 0);
6003     }
6004   gtk_tree_view_clamp_column_visible (tree_view, tree_view->priv->focus_column);
6005 }
6006
6007 static void
6008 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
6009                                      gint         count)
6010 {
6011   GtkRBTree *cursor_tree;
6012   GtkRBNode *cursor_node;
6013   GtkTreePath *path;
6014
6015   g_return_if_fail (tree_view->priv->tree != NULL);
6016
6017   if (count == -1)
6018     {
6019       cursor_tree = tree_view->priv->tree;
6020       cursor_node = cursor_tree->root;
6021       while (cursor_node && cursor_node->left != cursor_tree->nil)
6022         cursor_node = cursor_node->left;
6023     }
6024   else
6025     {
6026       cursor_tree = tree_view->priv->tree;
6027       cursor_node = cursor_tree->root;
6028       do
6029         {
6030           while (cursor_node && cursor_node->right != cursor_tree->nil)
6031             cursor_node = cursor_node->right;
6032           if (cursor_node->children == NULL)
6033             break;
6034
6035           cursor_tree = cursor_node->children;
6036           cursor_node = cursor_tree->root;
6037         }
6038       while (1);
6039     }
6040
6041   path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
6042   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
6043                                             cursor_node,
6044                                             cursor_tree,
6045                                             path,
6046                                             FALSE?GDK_SHIFT_MASK:0);
6047
6048   gtk_tree_row_reference_free (tree_view->priv->cursor);
6049   tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6050   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6051 }
6052
6053 static void
6054 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
6055 {
6056   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
6057     return;
6058   gtk_tree_selection_select_all (tree_view->priv->selection);
6059 }
6060
6061 static void
6062 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
6063                                       gboolean     start_editing)
6064 {
6065   GtkRBTree *cursor_tree = NULL;
6066   GtkRBNode *cursor_node = NULL;
6067   GtkTreePath *cursor_path = NULL;
6068   GdkModifierType state = 0;
6069   cursor_path = NULL;
6070
6071   if (tree_view->priv->cursor)
6072     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6073
6074   if (cursor_path == NULL)
6075     return;
6076
6077   _gtk_tree_view_find_node (tree_view, cursor_path,
6078                             &cursor_tree, &cursor_node);
6079
6080   if (cursor_tree == NULL)
6081     {
6082       gtk_tree_path_free (cursor_path);
6083       return;
6084     }
6085
6086   gtk_get_current_event_state (&state);
6087
6088   if (start_editing && tree_view->priv->focus_column)
6089     {
6090       if (gtk_tree_view_start_editing (tree_view, cursor_path))
6091         {
6092           gtk_tree_path_free (cursor_path);
6093           return;
6094         }
6095     }
6096   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
6097                                             cursor_node,
6098                                             cursor_tree,
6099                                             cursor_path,
6100                                             state);
6101
6102   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6103
6104   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6105   gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
6106   gtk_tree_view_row_activated (tree_view, cursor_path, tree_view->priv->focus_column);
6107
6108   gtk_tree_path_free (cursor_path);
6109 }
6110
6111 static void
6112 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
6113 {
6114   GtkRBTree *cursor_tree = NULL;
6115   GtkRBNode *cursor_node = NULL;
6116   GtkTreePath *cursor_path = NULL;
6117
6118   cursor_path = NULL;
6119   if (tree_view->priv->cursor)
6120     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6121
6122   if (cursor_path == NULL)
6123     return;
6124
6125   _gtk_tree_view_find_node (tree_view, cursor_path,
6126                             &cursor_tree, &cursor_node);
6127   if (cursor_tree == NULL)
6128     {
6129       gtk_tree_path_free (cursor_path);
6130       return;
6131     }
6132
6133   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
6134                                             cursor_node,
6135                                             cursor_tree,
6136                                             cursor_path,
6137                                             GDK_CONTROL_MASK);
6138
6139   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6140
6141   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6142   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
6143   gtk_tree_path_free (cursor_path);
6144 }
6145
6146
6147
6148 static void
6149 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
6150                                                gboolean     logical,
6151                                                gboolean     expand,
6152                                                gboolean     open_all)
6153 {
6154   GtkTreePath *cursor_path = NULL;
6155   GtkRBTree *tree;
6156   GtkRBNode *node;
6157
6158   cursor_path = NULL;
6159   if (tree_view->priv->cursor)
6160     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6161
6162   if (cursor_path == NULL)
6163     return;
6164
6165   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
6166     return;
6167
6168   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6169   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
6170
6171   if (expand)
6172     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
6173   else
6174     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
6175
6176   gtk_tree_path_free (cursor_path);
6177 }
6178
6179 static void
6180 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
6181 {
6182   GtkRBTree *cursor_tree = NULL;
6183   GtkRBNode *cursor_node = NULL;
6184   GtkTreePath *cursor_path = NULL;
6185
6186   cursor_path = NULL;
6187   if (tree_view->priv->cursor)
6188     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6189
6190   if (cursor_path == NULL)
6191     return;
6192
6193   _gtk_tree_view_find_node (tree_view, cursor_path,
6194                             &cursor_tree, &cursor_node);
6195   if (cursor_tree == NULL)
6196     {
6197       gtk_tree_path_free (cursor_path);
6198       return;
6199     }
6200
6201   if (cursor_tree->parent_node)
6202     {
6203       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
6204       cursor_node = cursor_tree->parent_node;
6205       cursor_tree = cursor_tree->parent_tree;
6206
6207       gtk_tree_path_up (cursor_path);
6208       gtk_tree_row_reference_free (tree_view->priv->cursor);
6209       tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, cursor_path);
6210       _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
6211                                                 cursor_node,
6212                                                 cursor_tree,
6213                                                 cursor_path,
6214                                                 0);
6215     }
6216
6217   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6218
6219   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6220   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
6221   gtk_tree_path_free (cursor_path);
6222 }
6223
6224 static void
6225 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view)
6226 {
6227   GtkWidget *window;
6228   GtkWidget *entry;
6229   GtkWidget *search_dialog;
6230
6231   if (tree_view->priv->enable_search == FALSE ||
6232       tree_view->priv->search_column < 0)
6233     return;
6234
6235   search_dialog = gtk_object_get_data (GTK_OBJECT (tree_view),
6236                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
6237   if (search_dialog)
6238     return;
6239
6240   /* set up window */
6241   window = gtk_window_new (GTK_WINDOW_POPUP);
6242   gtk_window_set_title (GTK_WINDOW (window), "search dialog");
6243   gtk_container_set_border_width (GTK_CONTAINER (window), 3);
6244   gtk_window_set_modal (GTK_WINDOW (window), TRUE);
6245   gtk_signal_connect
6246     (GTK_OBJECT (window), "delete_event",
6247      GTK_SIGNAL_FUNC (gtk_tree_view_search_delete_event),
6248      tree_view);
6249   gtk_signal_connect
6250     (GTK_OBJECT (window), "key_press_event",
6251      GTK_SIGNAL_FUNC (gtk_tree_view_search_key_press_event),
6252      tree_view);
6253   gtk_signal_connect
6254     (GTK_OBJECT (window), "button_press_event",
6255      GTK_SIGNAL_FUNC (gtk_tree_view_search_button_press_event),
6256      tree_view);
6257
6258   /* add entry */
6259   entry = gtk_entry_new ();
6260   gtk_widget_show (entry);
6261   gtk_signal_connect
6262     (GTK_OBJECT (entry), "changed",
6263      GTK_SIGNAL_FUNC (gtk_tree_view_search_init),
6264      tree_view);
6265   gtk_container_add (GTK_CONTAINER (window), entry);
6266
6267   /* done, show it */
6268   tree_view->priv->search_dialog_position_func (tree_view, window);
6269   gtk_widget_show_all (window);
6270   gtk_widget_grab_focus (entry);
6271
6272   /* position window */
6273
6274   gtk_object_set_data_full (GTK_OBJECT (window), "gtk-tree-view-text",
6275                             g_strdup (gtk_entry_get_text (GTK_ENTRY (entry))),
6276                             (GDestroyNotify) g_free);
6277   gtk_object_set_data (GTK_OBJECT (tree_view),
6278                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY, window);
6279
6280   /* search first matching iter */
6281   gtk_tree_view_search_init (entry, tree_view);
6282 }
6283
6284 void
6285 _gtk_tree_view_update_size (GtkTreeView *tree_view)
6286 {
6287   gint width, height;
6288   GList *list;
6289   GtkTreeViewColumn *column;
6290   gint vertical_separator;
6291   gint i;
6292
6293   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
6294
6295   if (tree_view->priv->model == NULL)
6296     {
6297       tree_view->priv->width = 0;
6298       tree_view->priv->height = 0;
6299       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6300       return;
6301     }
6302
6303   width = 0;
6304   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
6305     {
6306       column = list->data;
6307       if (!column->visible)
6308         continue;
6309       width += TREE_VIEW_COLUMN_WIDTH (column);
6310     }
6311
6312   if (tree_view->priv->tree == NULL)
6313     height = 0;
6314   else
6315     height = tree_view->priv->tree->root->offset + vertical_separator;
6316
6317   if (tree_view->priv->width != width)
6318     {
6319       tree_view->priv->width = width;
6320       tree_view->priv->hadjustment->upper = width;
6321       gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->hadjustment), "changed");
6322     }
6323
6324   if (tree_view->priv->height != height)
6325     {
6326       tree_view->priv->height = height;
6327       tree_view->priv->vadjustment->upper = tree_view->priv->height;
6328       gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
6329     }
6330
6331   if (GTK_WIDGET_REALIZED (tree_view))
6332     {
6333       gdk_window_resize (tree_view->priv->bin_window, MAX (width, GTK_WIDGET (tree_view)->allocation.width), height + TREE_VIEW_HEADER_HEIGHT (tree_view));
6334       gdk_window_resize (tree_view->priv->header_window, MAX (width, GTK_WIDGET (tree_view)->allocation.width), tree_view->priv->header_height);
6335
6336       _gtk_tree_view_update_col_width (tree_view);
6337     }
6338
6339   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6340 }
6341
6342 /* this function returns the new width of the column being resized given
6343  * the column and x position of the cursor; the x cursor position is passed
6344  * in as a pointer and automagicly corrected if it's beyond min/max limits
6345  */
6346 static gint
6347 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
6348                                 gint       i,
6349                                 gint      *x)
6350 {
6351   GtkTreeViewColumn *column;
6352   gint width;
6353
6354   /* first translate the x position from widget->window
6355    * to clist->clist_window
6356    */
6357
6358   column = g_list_nth (tree_view->priv->columns, i)->data;
6359   width = *x - column->button->allocation.x;
6360
6361   /* Clamp down the value */
6362   if (column->min_width == -1)
6363     width = MAX (column->button->requisition.width,
6364                  width);
6365   else
6366     width = MAX (column->min_width,
6367                  width);
6368   if (column->max_width != -1)
6369     width = MIN (width, column->max_width != -1);
6370   *x = column->button->allocation.x + width;
6371
6372   return width;
6373 }
6374
6375
6376 /* Callbacks */
6377 static void
6378 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
6379                                   GtkTreeView   *tree_view)
6380 {
6381   if (GTK_WIDGET_REALIZED (tree_view))
6382     {
6383       gint dy;
6384       gdk_window_move (tree_view->priv->bin_window,
6385                        - tree_view->priv->hadjustment->value,
6386                        0);
6387       gdk_window_move (tree_view->priv->header_window,
6388                        - tree_view->priv->hadjustment->value,
6389                        0);
6390       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
6391       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
6392       tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
6393
6394       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6395       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
6396     }
6397 }
6398
6399 \f
6400
6401 /* Public methods
6402  */
6403
6404 /**
6405  * gtk_tree_view_new:
6406  *
6407  * Creates a new #GtkTreeView widget.
6408  *
6409  * Return value: A newly created #GtkTreeView widget.
6410  **/
6411 GtkWidget *
6412 gtk_tree_view_new (void)
6413 {
6414   GtkTreeView *tree_view;
6415
6416   tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
6417
6418   return GTK_WIDGET (tree_view);
6419 }
6420
6421 /**
6422  * gtk_tree_view_new_with_model:
6423  * @model: the model.
6424  *
6425  * Creates a new #GtkTreeView widget with the model initialized to @model.
6426  *
6427  * Return value: A newly created #GtkTreeView widget.
6428  **/
6429 GtkWidget *
6430 gtk_tree_view_new_with_model (GtkTreeModel *model)
6431 {
6432   GtkTreeView *tree_view;
6433
6434   tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
6435   gtk_tree_view_set_model (tree_view, model);
6436
6437   return GTK_WIDGET (tree_view);
6438 }
6439
6440 /* Public Accessors
6441  */
6442
6443 /**
6444  * gtk_tree_view_get_model:
6445  * @tree_view: a #GtkTreeView
6446  *
6447  * Returns the model the the #GtkTreeView is based on.  Returns %NULL if the
6448  * model is unset.
6449  *
6450  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
6451  **/
6452 GtkTreeModel *
6453 gtk_tree_view_get_model (GtkTreeView *tree_view)
6454 {
6455   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
6456
6457   return tree_view->priv->model;
6458 }
6459
6460 /**
6461  * gtk_tree_view_set_model:
6462  * @tree_view: A #GtkTreeNode.
6463  * @model: The model.
6464  *
6465  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
6466  * set, it will remove it before setting the new model.  If @model is %NULL, then
6467  * it will unset the old model.
6468  **/
6469 void
6470 gtk_tree_view_set_model (GtkTreeView  *tree_view,
6471                          GtkTreeModel *model)
6472 {
6473   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6474
6475   if (model == tree_view->priv->model)
6476     return;
6477
6478   if (tree_view->priv->model)
6479     {
6480       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
6481
6482       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
6483                                             gtk_tree_view_row_changed, tree_view);
6484       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
6485                                             gtk_tree_view_row_inserted, tree_view);
6486       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
6487                                             gtk_tree_view_row_has_child_toggled, tree_view);
6488       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
6489                                             gtk_tree_view_row_deleted, tree_view);
6490       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
6491                                             gtk_tree_view_rows_reordered, tree_view);
6492       if (tree_view->priv->tree)
6493         {
6494           _gtk_rbtree_free (tree_view->priv->tree);
6495           tree_view->priv->tree = NULL;
6496         }
6497       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
6498       tree_view->priv->drag_dest_row = NULL;
6499       gtk_tree_row_reference_free (tree_view->priv->cursor);
6500       tree_view->priv->cursor = NULL;
6501       gtk_tree_row_reference_free (tree_view->priv->anchor);
6502       tree_view->priv->anchor = NULL;
6503
6504       g_object_unref (tree_view->priv->model);
6505       tree_view->priv->search_column = -1;
6506     }
6507
6508   tree_view->priv->model = model;
6509
6510
6511   if (tree_view->priv->model)
6512     {
6513       gint i;
6514       GtkTreePath *path;
6515       GtkTreeIter iter;
6516
6517
6518       if (tree_view->priv->search_column == -1)
6519         {
6520           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
6521             {
6522               if (gtk_tree_model_get_column_type (model, i) == G_TYPE_STRING)
6523                 {
6524                   tree_view->priv->search_column = i;
6525                   break;
6526                 }
6527             }
6528         }
6529       g_object_ref (tree_view->priv->model);
6530       g_signal_connect (tree_view->priv->model,
6531                         "row_changed",
6532                         G_CALLBACK (gtk_tree_view_row_changed),
6533                         tree_view);
6534       g_signal_connect (tree_view->priv->model,
6535                         "row_inserted",
6536                         G_CALLBACK (gtk_tree_view_row_inserted),
6537                         tree_view);
6538       g_signal_connect (tree_view->priv->model,
6539                         "row_has_child_toggled",
6540                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
6541                         tree_view);
6542       g_signal_connect (tree_view->priv->model,
6543                         "row_deleted",
6544                         G_CALLBACK (gtk_tree_view_row_deleted),
6545                         tree_view);
6546       g_signal_connect (tree_view->priv->model,
6547                         "rows_reordered",
6548                         G_CALLBACK (gtk_tree_view_rows_reordered),
6549                         tree_view);
6550
6551       path = gtk_tree_path_new_root ();
6552       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
6553         {
6554           tree_view->priv->tree = _gtk_rbtree_new ();
6555           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE, GTK_WIDGET_REALIZED (tree_view));
6556         }
6557       gtk_tree_path_free (path);
6558
6559       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
6560     }
6561
6562   if (GTK_WIDGET_REALIZED (tree_view))
6563     _gtk_tree_view_update_size (tree_view);
6564   g_object_notify (G_OBJECT (tree_view), "model");
6565 }
6566
6567 /**
6568  * gtk_tree_view_get_selection:
6569  * @tree_view: A #GtkTreeView.
6570  *
6571  * Gets the #GtkTreeSelection associated with @tree_view.
6572  *
6573  * Return value: A #GtkTreeSelection object.
6574  **/
6575 GtkTreeSelection *
6576 gtk_tree_view_get_selection (GtkTreeView *tree_view)
6577 {
6578   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
6579
6580   return tree_view->priv->selection;
6581 }
6582
6583 /**
6584  * gtk_tree_view_get_hadjustment:
6585  * @tree_view: A #GtkTreeView
6586  *
6587  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
6588  *
6589  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
6590  * used.
6591  **/
6592 GtkAdjustment *
6593 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
6594 {
6595   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
6596
6597   if (tree_view->priv->hadjustment == NULL)
6598     gtk_tree_view_set_hadjustment (tree_view, NULL);
6599
6600   return tree_view->priv->hadjustment;
6601 }
6602
6603 /**
6604  * gtk_tree_view_set_hadjustment:
6605  * @tree_view: A #GtkTreeView
6606  * @adjustment: The #GtkAdjustment to set, or %NULL
6607  *
6608  * Sets the #GtkAdjustment for the current horizontal aspect.
6609  **/
6610 void
6611 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
6612                                GtkAdjustment *adjustment)
6613 {
6614   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6615
6616   gtk_tree_view_set_adjustments (tree_view,
6617                                  adjustment,
6618                                  tree_view->priv->vadjustment);
6619
6620   g_object_notify (G_OBJECT (tree_view), "hadjustment");
6621 }
6622
6623 /**
6624  * gtk_tree_view_get_vadjustment:
6625  * @tree_view: A #GtkTreeView
6626  *
6627  * Gets the #GtkAdjustment currently being used for the vertical aspect.
6628  *
6629  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
6630  * used.
6631  **/
6632 GtkAdjustment *
6633 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
6634 {
6635   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
6636
6637   if (tree_view->priv->vadjustment == NULL)
6638     gtk_tree_view_set_vadjustment (tree_view, NULL);
6639
6640   return tree_view->priv->vadjustment;
6641 }
6642
6643 /**
6644  * gtk_tree_view_set_vadjustment:
6645  * @tree_view: A #GtkTreeView
6646  * @adjustment: The #GtkAdjustment to set, or %NULL
6647  *
6648  * Sets the #GtkAdjustment for the current vertical aspect.
6649  **/
6650 void
6651 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
6652                                GtkAdjustment *adjustment)
6653 {
6654   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6655
6656   gtk_tree_view_set_adjustments (tree_view,
6657                                  tree_view->priv->hadjustment,
6658                                  adjustment);
6659
6660   g_object_notify (G_OBJECT (tree_view), "vadjustment");
6661 }
6662
6663 /* Column and header operations */
6664
6665 /**
6666  * gtk_tree_view_get_headers_visible:
6667  * @tree_view: A #GtkTreeView.
6668  *
6669  * Returns %TRUE if the headers on the @tree_view are visible.
6670  *
6671  * Return value: Whether the headers are visible or not.
6672  **/
6673 gboolean
6674 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
6675 {
6676   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
6677
6678   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
6679 }
6680
6681 /**
6682  * gtk_tree_view_set_headers_visible:
6683  * @tree_view: A #GtkTreeView.
6684  * @headers_visible: %TRUE if the headers are visible
6685  *
6686  * Sets the the visibility state of the headers.
6687  **/
6688 void
6689 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
6690                                    gboolean     headers_visible)
6691 {
6692   gint x, y;
6693   GList *list;
6694   GtkTreeViewColumn *column;
6695
6696   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6697
6698   headers_visible = !! headers_visible;
6699
6700   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
6701     return;
6702
6703   if (headers_visible)
6704     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
6705   else
6706     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
6707
6708   if (GTK_WIDGET_REALIZED (tree_view))
6709     {
6710       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
6711       if (headers_visible)
6712         {
6713           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view));
6714
6715           if (GTK_WIDGET_MAPPED (tree_view))
6716             gtk_tree_view_map_buttons (tree_view);
6717         }
6718       else
6719         {
6720           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
6721
6722           for (list = tree_view->priv->columns; list; list = list->next)
6723             {
6724               column = list->data;
6725               gtk_widget_unmap (column->button);
6726             }
6727           gdk_window_hide (tree_view->priv->header_window);
6728         }
6729     }
6730
6731   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
6732   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
6733   tree_view->priv->vadjustment->lower = 0;
6734   tree_view->priv->vadjustment->upper = tree_view->priv->height;
6735   gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
6736
6737   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6738
6739   g_object_notify (G_OBJECT (tree_view), "headers_visible");
6740 }
6741
6742
6743 /**
6744  * gtk_tree_view_columns_autosize:
6745  * @tree_view: A #GtkTreeView.
6746  *
6747  * Resizes all columns to their optimal width.
6748  **/
6749 void
6750 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
6751 {
6752   gboolean dirty = FALSE;
6753   GList *list;
6754   GtkTreeViewColumn *column;
6755
6756   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6757
6758   for (list = tree_view->priv->columns; list; list = list->next)
6759     {
6760       column = list->data;
6761       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
6762         continue;
6763       gtk_tree_view_column_cell_set_dirty (column);
6764       dirty = TRUE;
6765     }
6766
6767   if (dirty)
6768     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6769 }
6770
6771 /**
6772  * gtk_tree_view_set_headers_clickable:
6773  * @tree_view: A #GtkTreeView.
6774  * @setting: %TRUE if the columns are clickable.
6775  *
6776  * Allow the column title buttons to be clicked.
6777  **/
6778 void
6779 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
6780                                      gboolean   setting)
6781 {
6782   GList *list;
6783
6784   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6785   g_return_if_fail (tree_view->priv->model != NULL);
6786
6787   for (list = tree_view->priv->columns; list; list = list->next)
6788     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
6789
6790   g_object_notify (G_OBJECT (tree_view), "headers_clickable");
6791 }
6792
6793
6794 /**
6795  * gtk_tree_view_set_rules_hint
6796  * @tree_view: a #GtkTreeView
6797  * @setting: %TRUE if the tree requires reading across rows
6798  *
6799  * This function tells GTK+ that the user interface for your
6800  * application requires users to read across tree rows and associate
6801  * cells with one another. By default, GTK+ will then render the tree
6802  * with alternating row colors. Do <emphasis>not</emphasis> use it
6803  * just because you prefer the appearance of the ruled tree; that's a
6804  * question for the theme. Some themes will draw tree rows in
6805  * alternating colors even when rules are turned off, and users who
6806  * prefer that appearance all the time can choose those themes. You
6807  * should call this function only as a <emphasis>semantic</emphasis>
6808  * hint to the theme engine that your tree makes alternating colors
6809  * useful from a functional standpoint (since it has lots of columns,
6810  * generally).
6811  *
6812  **/
6813 void
6814 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
6815                               gboolean      setting)
6816 {
6817   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6818
6819   setting = setting != FALSE;
6820
6821   if (tree_view->priv->has_rules != setting)
6822     {
6823       tree_view->priv->has_rules = setting;
6824       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6825     }
6826
6827   g_object_notify (G_OBJECT (tree_view), "rules_hint");
6828 }
6829
6830 /**
6831  * gtk_tree_view_get_rules_hint
6832  * @tree_view: a #GtkTreeView
6833  *
6834  * Gets the setting set by gtk_tree_view_set_rules_hint().
6835  *
6836  * Return value: %TRUE if rules are useful for the user of this tree
6837  **/
6838 gboolean
6839 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
6840 {
6841   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
6842
6843   return tree_view->priv->has_rules;
6844 }
6845
6846 /* Public Column functions
6847  */
6848
6849 /**
6850  * gtk_tree_view_append_column:
6851  * @tree_view: A #GtkTreeView.
6852  * @column: The #GtkTreeViewColumn to add.
6853  *
6854  * Appends @column to the list of columns.
6855  *
6856  * Return value: The number of columns in @tree_view after appending.
6857  **/
6858 gint
6859 gtk_tree_view_append_column (GtkTreeView       *tree_view,
6860                              GtkTreeViewColumn *column)
6861 {
6862   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
6863   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
6864   g_return_val_if_fail (column->tree_view == NULL, -1);
6865
6866   return gtk_tree_view_insert_column (tree_view, column, -1);
6867 }
6868
6869
6870 /**
6871  * gtk_tree_view_remove_column:
6872  * @tree_view: A #GtkTreeView.
6873  * @column: The #GtkTreeViewColumn to remove.
6874  *
6875  * Removes @column from @tree_view.
6876  *
6877  * Return value: The number of columns in @tree_view after removing.
6878  **/
6879 gint
6880 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
6881                              GtkTreeViewColumn *column)
6882 {
6883   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
6884   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
6885   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
6886
6887   _gtk_tree_view_column_unset_tree_view (column);
6888
6889   if (tree_view->priv->focus_column == column)
6890     tree_view->priv->focus_column = NULL;
6891
6892   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
6893   tree_view->priv->n_columns--;
6894
6895   if (GTK_WIDGET_REALIZED (tree_view))
6896     {
6897       GList *list;
6898
6899       _gtk_tree_view_column_unrealize_button (column);
6900       for (list = tree_view->priv->columns; list; list = list->next)
6901         {
6902           GtkTreeViewColumn *tmp_column;
6903
6904           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
6905           if (tmp_column->visible)
6906             gtk_tree_view_column_cell_set_dirty (tmp_column);
6907         }
6908
6909       if (tree_view->priv->n_columns == 0 &&
6910           gtk_tree_view_get_headers_visible (tree_view))
6911         gdk_window_hide (tree_view->priv->header_window);
6912
6913       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6914     }
6915
6916   g_object_unref (G_OBJECT (column));
6917   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
6918
6919   return tree_view->priv->n_columns;
6920 }
6921
6922 /**
6923  * gtk_tree_view_insert_column:
6924  * @tree_view: A #GtkTreeView.
6925  * @column: The #GtkTreeViewColumn to be inserted.
6926  * @position: The position to insert @column in.
6927  *
6928  * This inserts the @column into the @tree_view at @position.  If @position is
6929  * -1, then the column is inserted at the end.
6930  *
6931  * Return value: The number of columns in @tree_view after insertion.
6932  **/
6933 gint
6934 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
6935                              GtkTreeViewColumn *column,
6936                              gint               position)
6937 {
6938   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
6939   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
6940   g_return_val_if_fail (column->tree_view == NULL, -1);
6941
6942   g_object_ref (G_OBJECT (column));
6943   gtk_object_sink (GTK_OBJECT (column));
6944
6945   if (tree_view->priv->n_columns == 0 &&
6946       GTK_WIDGET_REALIZED (tree_view) &&
6947       gtk_tree_view_get_headers_visible (tree_view))
6948     {
6949       gdk_window_show (tree_view->priv->header_window);
6950     }
6951
6952   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
6953                                             column, position);
6954   tree_view->priv->n_columns++;
6955
6956   _gtk_tree_view_column_set_tree_view (column, tree_view);
6957
6958   if (GTK_WIDGET_REALIZED (tree_view))
6959     {
6960       GList *list;
6961
6962       _gtk_tree_view_column_realize_button (column);
6963
6964       for (list = tree_view->priv->columns; list; list = list->next)
6965         {
6966           column = GTK_TREE_VIEW_COLUMN (list->data);
6967           if (column->visible)
6968             gtk_tree_view_column_cell_set_dirty (column);
6969         }
6970       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6971     }
6972
6973   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
6974
6975   return tree_view->priv->n_columns;
6976 }
6977
6978 /**
6979  * gtk_tree_view_insert_column_with_attributes:
6980  * @tree_view: A #GtkTreeView
6981  * @position: The position to insert the new column in.
6982  * @title: The title to set the header to.
6983  * @cell: The #GtkCellRenderer.
6984  * @Varargs: A %NULL-terminated list of attributes.
6985  *
6986  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
6987  * @position.  If @position is -1, then the newly created column is inserted at
6988  * the end.  The column is initialized with the attributes given.
6989  *
6990  * Return value: The number of columns in @tree_view after insertion.
6991  **/
6992 gint
6993 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
6994                                              gint             position,
6995                                              gchar           *title,
6996                                              GtkCellRenderer *cell,
6997                                              ...)
6998 {
6999   GtkTreeViewColumn *column;
7000   gchar *attribute;
7001   va_list args;
7002   gint column_id;
7003
7004   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7005
7006   column = gtk_tree_view_column_new ();
7007
7008   gtk_tree_view_column_set_title (column, title);
7009   gtk_tree_view_column_pack_start (column, cell, TRUE);
7010
7011   va_start (args, cell);
7012
7013   attribute = va_arg (args, gchar *);
7014
7015   while (attribute != NULL)
7016     {
7017       column_id = va_arg (args, gint);
7018       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
7019       attribute = va_arg (args, gchar *);
7020     }
7021
7022   va_end (args);
7023
7024   gtk_tree_view_insert_column (tree_view, column, position);
7025
7026   return tree_view->priv->n_columns;
7027 }
7028
7029 /**
7030  * gtk_tree_view_insert_column_with_data_func:
7031  * @tree_view: a #GtkTreeView
7032  * @position: Position to insert, -1 for append
7033  * @title: column title
7034  * @cell: cell renderer for column
7035  * @func: function to set attributes of cell renderer
7036  * @data: data for @func
7037  * @dnotify: destroy notifier for @data
7038  *
7039  * Convenience function that inserts a new column into the #GtkTreeView
7040  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
7041  * attributes (normally using data from the model). See also
7042  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
7043  *
7044  * Return value: number of columns in the tree view post-insert
7045  **/
7046 gint
7047 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
7048                                              gint                       position,
7049                                              gchar                     *title,
7050                                              GtkCellRenderer           *cell,
7051                                              GtkTreeCellDataFunc        func,
7052                                              gpointer                   data,
7053                                              GDestroyNotify             dnotify)
7054 {
7055   GtkTreeViewColumn *column;
7056
7057   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7058
7059   column = gtk_tree_view_column_new ();
7060
7061   gtk_tree_view_column_set_title (column, title);
7062   gtk_tree_view_column_pack_start (column, cell, TRUE);
7063   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
7064
7065   gtk_tree_view_insert_column (tree_view, column, position);
7066
7067   return tree_view->priv->n_columns;
7068 }
7069
7070 /**
7071  * gtk_tree_view_get_column:
7072  * @tree_view: A #GtkTreeView.
7073  * @n: The position of the column, counting from 0.
7074  *
7075  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
7076  *
7077  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
7078  * range of columns.
7079  **/
7080 GtkTreeViewColumn *
7081 gtk_tree_view_get_column (GtkTreeView *tree_view,
7082                           gint         n)
7083 {
7084   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7085
7086   if (n < 0 || n >= tree_view->priv->n_columns)
7087     return NULL;
7088
7089   if (tree_view->priv->columns == NULL)
7090     return NULL;
7091
7092   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
7093 }
7094
7095 /**
7096  * gtk_tree_view_get_columns:
7097  * @tree_view: A #GtkTreeView
7098  *
7099  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
7100  * The returned list must be freed with g_list_free ().
7101  *
7102  * Return value: A list of #GtkTreeViewColumn s
7103  **/
7104 GList *
7105 gtk_tree_view_get_columns (GtkTreeView *tree_view)
7106 {
7107   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7108
7109   return g_list_copy (tree_view->priv->columns);
7110 }
7111
7112 /**
7113  * gtk_tree_view_move_column_after:
7114  * @tree_view: A #GtkTreeView
7115  * @column: The #GtkTreeViewColumn to be moved.
7116  * @base_column: The #GtkTreeViewColumn to be moved relative to, or %NULL.
7117  *
7118  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
7119  * @column is placed in the first position.
7120  **/
7121 void
7122 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
7123                                  GtkTreeViewColumn *column,
7124                                  GtkTreeViewColumn *base_column)
7125 {
7126   GList *column_list_el, *base_el = NULL;
7127
7128   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7129
7130   column_list_el = g_list_find (tree_view->priv->columns, column);
7131   g_return_if_fail (column_list_el != NULL);
7132
7133   if (base_column)
7134     {
7135       base_el = g_list_find (tree_view->priv->columns, base_column);
7136       g_return_if_fail (base_el != NULL);
7137     }
7138
7139   if (column_list_el->prev == base_el)
7140     return;
7141
7142   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
7143   if (base_el == NULL)
7144     {
7145       column_list_el->prev = NULL;
7146       column_list_el->next = tree_view->priv->columns;
7147       if (column_list_el->next)
7148         column_list_el->next->prev = column_list_el;
7149       tree_view->priv->columns = column_list_el;
7150     }
7151   else
7152     {
7153       column_list_el->prev = base_el;
7154       column_list_el->next = base_el->next;
7155       if (column_list_el->next)
7156         column_list_el->next->prev = column_list_el;
7157       base_el->next = column_list_el;
7158     }
7159
7160   if (GTK_WIDGET_REALIZED (tree_view))
7161     {
7162       /*gtk_widget_queue_resize (GTK_WIDGET (tree_view)); */
7163       _gtk_tree_view_update_size (tree_view);
7164       gtk_tree_view_size_allocate_buttons (GTK_WIDGET (tree_view));
7165     }
7166
7167   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
7168 }
7169
7170 /**
7171  * gtk_tree_view_set_expander_column:
7172  * @tree_view: A #GtkTreeView
7173  * @column: %NULL, or the column to draw the expander arrow at.
7174  *
7175  * Sets the column to draw the expander arrow at. It must be in @tree_view.  If
7176  * @column is %NULL, then the expander arrow is always at the first visible
7177  * column.
7178  **/
7179 void
7180 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
7181                                    GtkTreeViewColumn *column)
7182 {
7183   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7184   if (column != NULL)
7185     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
7186
7187   if (tree_view->priv->expander_column != column)
7188     {
7189       GList *list;
7190
7191       if (column)
7192         {
7193           /* Confirm that column is in tree_view */
7194           for (list = tree_view->priv->columns; list; list = list->next)
7195             if (list->data == column)
7196               break;
7197           g_return_if_fail (list != NULL);
7198         }
7199
7200       tree_view->priv->expander_column = column;
7201       g_object_notify (G_OBJECT (tree_view), "expander_column");
7202     }
7203 }
7204
7205 /**
7206  * gtk_tree_view_get_expander_column:
7207  * @tree_view: A #GtkTreeView
7208  *
7209  * Returns the column that is the current expander column.  This
7210  * column has the expander arrow drawn next to it.
7211  *
7212  * Return value: The expander column.
7213  **/
7214 GtkTreeViewColumn *
7215 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
7216 {
7217   GList *list;
7218
7219   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7220
7221   for (list = tree_view->priv->columns; list; list = list->data)
7222     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
7223       return (GtkTreeViewColumn *) list->data;
7224   return NULL;
7225 }
7226
7227
7228 /**
7229  * gtk_tree_view_set_column_drag_function:
7230  * @tree_view: A #GtkTreeView.
7231  * @func: A function to determine which columns are reorderable, or %NULL.
7232  * @user_data: User data to be passed to @func, or %NULL
7233  * @destroy: Destroy notifier for @user_data, or %NULL
7234  *
7235  * Sets a user function for determining where a column may be dropped when
7236  * dragged.  This function is called on every column pair in turn at the
7237  * beginning of a column drag to determine where a drop can take place.  The
7238  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
7239  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
7240  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
7241  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
7242  * @tree_view reverts to the default behavior of allowing all columns to be
7243  * dropped everywhere.
7244  **/
7245 void
7246 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
7247                                         GtkTreeViewColumnDropFunc  func,
7248                                         gpointer                   user_data,
7249                                         GtkDestroyNotify           destroy)
7250 {
7251   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7252
7253   if (tree_view->priv->column_drop_func_data_destroy)
7254     (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
7255
7256   tree_view->priv->column_drop_func = func;
7257   tree_view->priv->column_drop_func_data = user_data;
7258   tree_view->priv->column_drop_func_data_destroy = destroy;
7259 }
7260
7261 /**
7262  * gtk_tree_view_scroll_to_point:
7263  * @tree_view: a #GtkTreeView
7264  * @tree_x: X coordinate of new top-left pixel of visible area
7265  * @tree_y: Y coordinate of new top-left pixel of visible area
7266  *
7267  * Scrolls the tree view such that the top-left corner of the visible
7268  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
7269  * in tree window coordinates.  The @tree_view must be realized before
7270  * this function is called.  If it isn't, you probably want to be
7271  * using gtk_tree_view_scroll_to_cell().
7272  **/
7273 void
7274 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
7275                                gint         tree_x,
7276                                gint         tree_y)
7277 {
7278   GtkAdjustment *hadj;
7279   GtkAdjustment *vadj;
7280
7281   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7282   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
7283
7284   hadj = tree_view->priv->hadjustment;
7285   vadj = tree_view->priv->vadjustment;
7286
7287   gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
7288   gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
7289 }
7290
7291 /**
7292  * gtk_tree_view_scroll_to_cell
7293  * @tree_view: A #GtkTreeView.
7294  * @path: The path of the row to move to, or %NULL.
7295  * @column: The #GtkTreeViewColumn to move horizontally to, or %NULL.
7296  * @use_align: whether to use alignment arguments, or %FALSE.
7297  * @row_align: The vertical alignment of the row specified by @path.
7298  * @col_align: The horizontal alignment of the column specified by @column.
7299  *
7300  * Moves the alignments of @tree_view to the position specified by @column and
7301  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
7302  * if @path is %NULL no vertical scrolling occurs.  @row_align determines where
7303  * the row is placed, and @col_align determines where @column is placed.  Both
7304  * are expected to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0
7305  * means right/bottom alignment, 0.5 means center.  If @use_align is %FALSE,
7306  * then the alignment arguments are ignored, and the tree does the minimum
7307  * amount of work to scroll the cell onto the screen.
7308  **/
7309 void
7310 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
7311                               GtkTreePath       *path,
7312                               GtkTreeViewColumn *column,
7313                               gboolean           use_align,
7314                               gfloat             row_align,
7315                               gfloat             col_align)
7316 {
7317   GdkRectangle cell_rect;
7318   GdkRectangle vis_rect;
7319   gint dest_x, dest_y;
7320   gfloat within_margin = 0;
7321
7322   /* FIXME work on unmapped/unrealized trees? maybe implement when
7323    * we do incremental reflow for trees
7324    */
7325
7326   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7327   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
7328   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
7329   g_return_if_fail (path != NULL || column != NULL);
7330
7331   row_align = CLAMP (row_align, 0.0, 1.0);
7332   col_align = CLAMP (col_align, 0.0, 1.0);
7333
7334   if (! GTK_WIDGET_REALIZED (tree_view))
7335     {
7336       if (path)
7337         tree_view->priv->scroll_to_path = gtk_tree_path_copy (path);
7338       if (column)
7339         tree_view->priv->scroll_to_column = column;
7340       tree_view->priv->scroll_to_use_align = use_align;
7341       tree_view->priv->scroll_to_row_align = row_align;
7342       tree_view->priv->scroll_to_col_align = col_align;
7343
7344       return;
7345     }
7346
7347   gtk_tree_view_get_cell_area (tree_view, path, column, &cell_rect);
7348   gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
7349
7350   dest_x = vis_rect.x;
7351   dest_y = vis_rect.y;
7352
7353   if (column)
7354     {
7355       if (use_align)
7356         {
7357           dest_x = cell_rect.x + cell_rect.width * row_align - vis_rect.width * row_align;
7358         }
7359       else
7360         {
7361           if (cell_rect.x < vis_rect.x)
7362             dest_x = cell_rect.x - vis_rect.width * within_margin;
7363           else if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
7364             dest_x = cell_rect.x + cell_rect.width - vis_rect.width * (1 - within_margin);
7365         }
7366     }
7367
7368   if (path)
7369     {
7370       if (use_align)
7371         {
7372           dest_y = cell_rect.y + cell_rect.height * col_align - vis_rect.height * col_align;
7373         }
7374       else
7375         {
7376           if (cell_rect.y < vis_rect.y)
7377             dest_y = cell_rect.y - vis_rect.height * within_margin;
7378           else if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
7379             dest_y = cell_rect.y + cell_rect.height - vis_rect.height * (1 - within_margin);
7380         }
7381     }
7382
7383   gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
7384 }
7385
7386
7387 /**
7388  * gtk_tree_view_row_activated:
7389  * @tree_view: A #GtkTreeView
7390  * @path: The #GtkTreePath to be activated.
7391  * @column: The #GtkTreeViewColumn to be activated.
7392  *
7393  * Activates the cell determined by @path and @column.
7394  **/
7395 void
7396 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
7397                              GtkTreePath       *path,
7398                              GtkTreeViewColumn *column)
7399 {
7400   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7401
7402   g_signal_emit (G_OBJECT(tree_view), tree_view_signals[ROW_ACTIVATED], 0, path, column);
7403 }
7404
7405
7406 static void
7407 gtk_tree_view_expand_all_helper (GtkRBTree  *tree,
7408                                  GtkRBNode  *node,
7409                                  gpointer  data)
7410 {
7411   GtkTreeView *tree_view = data;
7412
7413   if (node->children)
7414     _gtk_rbtree_traverse (node->children,
7415                           node->children->root,
7416                           G_PRE_ORDER,
7417                           gtk_tree_view_expand_all_helper,
7418                           data);
7419   else if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT && node->children == NULL)
7420     {
7421       GtkTreePath *path;
7422       GtkTreeIter iter;
7423       GtkTreeIter child;
7424
7425       node->children = _gtk_rbtree_new ();
7426       node->children->parent_tree = tree;
7427       node->children->parent_node = node;
7428       path = _gtk_tree_view_find_path (tree_view, tree, node);
7429       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
7430       gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
7431       gtk_tree_view_build_tree (tree_view,
7432                                 node->children,
7433                                 &child,
7434                                 gtk_tree_path_get_depth (path) + 1,
7435                                 TRUE,
7436                                 GTK_WIDGET_REALIZED (tree_view));
7437       gtk_tree_path_free (path);
7438     }
7439 }
7440
7441 /**
7442  * gtk_tree_view_expand_all:
7443  * @tree_view: A #GtkTreeView.
7444  *
7445  * Recursively expands all nodes in the @tree_view.
7446  **/
7447 void
7448 gtk_tree_view_expand_all (GtkTreeView *tree_view)
7449 {
7450   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7451   g_return_if_fail (tree_view->priv->tree != NULL);
7452
7453   _gtk_rbtree_traverse (tree_view->priv->tree,
7454                         tree_view->priv->tree->root,
7455                         G_PRE_ORDER,
7456                         gtk_tree_view_expand_all_helper,
7457                         tree_view);
7458
7459   _gtk_tree_view_update_size (tree_view);
7460 }
7461
7462 /* Timeout to animate the expander during expands and collapses */
7463 static gboolean
7464 expand_collapse_timeout (gpointer data)
7465 {
7466   GtkTreeView *tree_view = data;
7467   GtkRBNode *node;
7468   GtkRBTree *tree;
7469   gboolean expanding;
7470   gboolean redraw;
7471
7472   GDK_THREADS_ENTER ();
7473
7474   redraw = FALSE;
7475   expanding = TRUE;
7476
7477   node = tree_view->priv->expanded_collapsed_node;
7478   tree = tree_view->priv->expanded_collapsed_tree;
7479
7480   if (node->children == NULL)
7481     expanding = FALSE;
7482
7483   if (expanding)
7484     {
7485       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
7486         {
7487           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
7488           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
7489
7490           redraw = TRUE;
7491
7492         }
7493       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
7494         {
7495           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
7496
7497           redraw = TRUE;
7498         }
7499     }
7500   else
7501     {
7502       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
7503         {
7504           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
7505           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
7506
7507           redraw = TRUE;
7508         }
7509       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
7510         {
7511           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
7512
7513           redraw = TRUE;
7514
7515         }
7516     }
7517
7518   if (redraw)
7519     {
7520       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
7521
7522       GDK_THREADS_LEAVE ();
7523
7524       return TRUE;
7525     }
7526
7527   GDK_THREADS_LEAVE ();
7528
7529   return FALSE;
7530 }
7531
7532 /**
7533  * gtk_tree_view_collapse_all:
7534  * @tree_view: A #GtkTreeView.
7535  *
7536  * Recursively collapses all visible, expanded nodes in @tree_view.
7537  **/
7538 void
7539 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
7540 {
7541   GtkRBTree *tree;
7542   GtkRBNode *node;
7543   GtkTreePath *path;
7544   guint *indices;
7545
7546   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7547   g_return_if_fail (tree_view->priv->tree != NULL);
7548
7549   path = gtk_tree_path_new ();
7550   gtk_tree_path_append_index (path, 0);
7551   indices = gtk_tree_path_get_indices (path);
7552
7553   tree = tree_view->priv->tree;
7554   node = tree->root;
7555   while (node && node->left != tree->nil)
7556     node = node->left;
7557
7558   while (node)
7559     {
7560       if (node->children)
7561         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
7562       indices[0]++;
7563       node = _gtk_rbtree_next (tree, node);
7564     }
7565
7566   gtk_tree_path_free (path);
7567 }
7568
7569 /* FIXME the bool return values for expand_row and collapse_row are
7570  * not analagous; they should be TRUE if the row had children and
7571  * was not already in the requested state.
7572  */
7573
7574
7575 static gboolean
7576 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
7577                                GtkTreePath *path,
7578                                GtkRBTree   *tree,
7579                                GtkRBNode   *node,
7580                                gboolean     open_all,
7581                                gboolean     animate)
7582 {
7583   GtkTreeIter iter;
7584   GtkTreeIter temp;
7585   gboolean expand;
7586
7587
7588   if (node->children)
7589     return TRUE;
7590   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
7591     return FALSE;
7592
7593   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
7594   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
7595     return FALSE;
7596
7597   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
7598
7599   if (expand)
7600     return FALSE;
7601
7602   node->children = _gtk_rbtree_new ();
7603   node->children->parent_tree = tree;
7604   node->children->parent_node = node;
7605
7606   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
7607
7608   gtk_tree_view_build_tree (tree_view,
7609                             node->children,
7610                             &temp,
7611                             gtk_tree_path_get_depth (path) + 1,
7612                             open_all,
7613                             GTK_WIDGET_REALIZED (tree_view));
7614
7615   if (tree_view->priv->expand_collapse_timeout)
7616     {
7617       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
7618       tree_view->priv->expand_collapse_timeout = 0;
7619     }
7620
7621   if (tree_view->priv->expanded_collapsed_node != NULL)
7622     {
7623       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
7624       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
7625
7626       tree_view->priv->expanded_collapsed_node = NULL;
7627     }
7628
7629   if (animate)
7630     {
7631       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
7632       tree_view->priv->expanded_collapsed_node = node;
7633       tree_view->priv->expanded_collapsed_tree = tree;
7634
7635       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
7636     }
7637
7638   if (GTK_WIDGET_MAPPED (tree_view))
7639     {
7640       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
7641       _gtk_tree_view_update_size (tree_view);
7642     }
7643
7644   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[ROW_EXPANDED], 0, &iter, path);
7645   return TRUE;
7646 }
7647
7648
7649 /**
7650  * gtk_tree_view_expand_row:
7651  * @tree_view: a #GtkTreeView
7652  * @path: path to a row
7653  * @open_all: whether to recursively expand, or just expand immediate children
7654  *
7655  * Opens the row so its children are visible.
7656  *
7657  * Return value: %TRUE if the row existed and had children
7658  **/
7659 gboolean
7660 gtk_tree_view_expand_row (GtkTreeView *tree_view,
7661                           GtkTreePath *path,
7662                           gboolean     open_all)
7663 {
7664   GtkRBTree *tree;
7665   GtkRBNode *node;
7666
7667   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7668   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
7669   g_return_val_if_fail (path != NULL, FALSE);
7670
7671   if (_gtk_tree_view_find_node (tree_view,
7672                                 path,
7673                                 &tree,
7674                                 &node))
7675     return FALSE;
7676
7677   if (tree != NULL)
7678     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
7679   else
7680     return FALSE;
7681 }
7682
7683 static gboolean
7684 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
7685                                  GtkTreePath *path,
7686                                  GtkRBTree   *tree,
7687                                  GtkRBNode   *node,
7688                                  gboolean     animate)
7689 {
7690   GtkTreeIter iter;
7691   GtkTreeIter children;
7692   gboolean collapse;
7693   gint x, y;
7694   GList *list;
7695
7696   if (node->children == NULL)
7697     return FALSE;
7698
7699   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
7700
7701   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
7702
7703   if (collapse)
7704     return FALSE;
7705
7706   /* if the prelighted node is a child of us, we want to unprelight it.  We have
7707    * a chance to prelight the correct node below */
7708
7709   if (tree_view->priv->prelight_tree)
7710     {
7711       GtkRBTree *parent_tree;
7712       GtkRBNode *parent_node;
7713
7714       parent_tree = tree_view->priv->prelight_tree->parent_tree;
7715       parent_node = tree_view->priv->prelight_tree->parent_node;
7716       while (parent_tree)
7717         {
7718           if (parent_tree == tree && parent_node == node)
7719             {
7720               ensure_unprelighted (tree_view);
7721               break;
7722             }
7723           parent_node = parent_tree->parent_node;
7724           parent_tree = parent_tree->parent_tree;
7725         }
7726     }
7727
7728   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
7729
7730   for (list = tree_view->priv->columns; list; list = list->next)
7731     {
7732       GtkTreeViewColumn *column = list->data;
7733
7734       if (column->visible == FALSE)
7735         continue;
7736       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
7737         gtk_tree_view_column_cell_set_dirty (column);
7738     }
7739
7740   if (tree_view->priv->destroy_count_func)
7741     {
7742       GtkTreePath *child_path;
7743       gint child_count = 0;
7744       child_path = gtk_tree_path_copy (path);
7745       gtk_tree_path_append_index (child_path, 0);
7746       if (node->children)
7747         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
7748       (* tree_view->priv->destroy_count_func) (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
7749       gtk_tree_path_free (child_path);
7750     }
7751
7752   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
7753     g_signal_emit_by_name (G_OBJECT (tree_view->priv->selection), "changed", 0);
7754   _gtk_rbtree_remove (node->children);
7755
7756   if (tree_view->priv->expand_collapse_timeout)
7757     {
7758       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
7759       tree_view->priv->expand_collapse_timeout = 0;
7760     }
7761
7762   if (tree_view->priv->expanded_collapsed_node != NULL)
7763     {
7764       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
7765       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
7766
7767       tree_view->priv->expanded_collapsed_node = NULL;
7768     }
7769
7770   if (animate)
7771     {
7772       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
7773       tree_view->priv->expanded_collapsed_node = node;
7774       tree_view->priv->expanded_collapsed_tree = tree;
7775
7776       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
7777     }
7778
7779   if (GTK_WIDGET_MAPPED (tree_view))
7780     {
7781       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
7782       _gtk_tree_view_update_size (tree_view);
7783     }
7784
7785   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
7786     {
7787       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7788
7789       if (gtk_tree_path_is_ancestor (path, cursor_path))
7790         {
7791           gtk_tree_row_reference_free (tree_view->priv->cursor);
7792           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
7793                                                                       tree_view->priv->model,
7794                                                                       path);
7795         }
7796       gtk_tree_path_free (cursor_path);
7797     }
7798
7799   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
7800       {
7801       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
7802       if (gtk_tree_path_is_ancestor (path, anchor_path))
7803         {
7804           gtk_tree_row_reference_free (tree_view->priv->anchor);
7805           tree_view->priv->anchor = NULL;
7806         }
7807       gtk_tree_path_free (anchor_path);
7808
7809     }
7810
7811   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
7812
7813   /* now that we've collapsed all rows, we want to try to set the prelight
7814    * again. To do this, we fake a motion event and send it to ourselves. */
7815
7816   if (gdk_window_at_pointer (&x, &y) == tree_view->priv->bin_window)
7817     {
7818       GdkEventMotion event;
7819       event.window = tree_view->priv->bin_window;
7820       event.x = x;
7821       event.y = y;
7822
7823       /* despite the fact this isn't a real event, I'm almost positive it will
7824        * never trigger a drag event.  maybe_drag is the only function that uses
7825        * more than just event.x and event.y. */
7826       gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
7827     }
7828   return TRUE;
7829 }
7830
7831 /**
7832  * gtk_tree_view_collapse_row:
7833  * @tree_view: a #GtkTreeView
7834  * @path: path to a row in the @tree_view
7835  *
7836  * Collapses a row (hides its child rows, if they exist).
7837  *
7838  * Return value: %TRUE if the row was collapsed.
7839  **/
7840 gboolean
7841 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
7842                             GtkTreePath *path)
7843 {
7844   GtkRBTree *tree;
7845   GtkRBNode *node;
7846
7847   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7848   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
7849   g_return_val_if_fail (path != NULL, FALSE);
7850
7851   if (_gtk_tree_view_find_node (tree_view,
7852                                 path,
7853                                 &tree,
7854                                 &node))
7855     return FALSE;
7856
7857   if (tree == NULL || node->children == NULL)
7858     return FALSE;
7859
7860   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
7861 }
7862
7863 static void
7864 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
7865                                         GtkRBTree              *tree,
7866                                         GtkTreePath            *path,
7867                                         GtkTreeViewMappingFunc  func,
7868                                         gpointer                user_data)
7869 {
7870   GtkRBNode *node;
7871   gint *indices;
7872   gint depth;
7873   gint i = 0;
7874
7875   if (tree == NULL || tree->root == NULL)
7876     return;
7877
7878   node = tree->root;
7879
7880   indices = gtk_tree_path_get_indices (path);
7881   depth = gtk_tree_path_get_depth (path);
7882
7883   while (node && node->left != tree->nil)
7884     node = node->left;
7885
7886   while (node)
7887     {
7888       if (node->children)
7889         {
7890           gtk_tree_path_append_index (path, 0);
7891           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
7892           gtk_tree_path_up (path);
7893           (* func) (tree_view, path, user_data);
7894         }
7895       i++;
7896       indices[depth -1] = i;
7897       node = _gtk_rbtree_next (tree, node);
7898     }
7899 }
7900
7901 /**
7902  * gtk_tree_view_map_expanded_rows:
7903  * @tree_view: A #GtkTreeView
7904  * @func: A function to be called
7905  * @data: User data to be passed to the function.
7906  *
7907  * Calls @func on all expanded rows.
7908  **/
7909 void
7910 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
7911                                  GtkTreeViewMappingFunc  func,
7912                                  gpointer                user_data)
7913 {
7914   GtkTreePath *path;
7915
7916   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7917   g_return_if_fail (func != NULL);
7918
7919   path = gtk_tree_path_new_root ();
7920
7921   gtk_tree_view_map_expanded_rows_helper (tree_view,
7922                                           tree_view->priv->tree,
7923                                           path, func, user_data);
7924
7925   gtk_tree_path_free (path);
7926 }
7927
7928 /**
7929  * gtk_tree_view_row_expanded:
7930  * @tree_view: A #GtkTreeView.
7931  * @path: A #GtkTreePath to test expansion state.
7932  *
7933  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
7934  *
7935  * Return value: %TRUE if #path is expanded.
7936  **/
7937 gboolean
7938 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
7939                             GtkTreePath *path)
7940 {
7941   GtkRBTree *tree;
7942   GtkRBNode *node;
7943
7944   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7945   g_return_val_if_fail (path != NULL, FALSE);
7946
7947   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
7948
7949   if (node == NULL)
7950     return FALSE;
7951
7952   return (node->children != NULL);
7953 }
7954
7955 static GtkTargetEntry row_targets[] = {
7956   { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
7957 };
7958
7959
7960 /**
7961  * gtk_tree_view_get_reorderable:
7962  * @tree_view: a #GtkTreeView
7963  *
7964  * Retrieves whether the user can reorder the tree via drag-and-drop. See
7965  * gtk_tree_view_set_reorderable().
7966  *
7967  * Return value: %TRUE if the tree can be reordered.
7968  **/
7969 gboolean
7970 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
7971 {
7972   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7973
7974   return tree_view->priv->reorderable;
7975 }
7976
7977 /**
7978  * gtk_tree_view_set_reorderable:
7979  * @tree_view: A #GtkTreeView.
7980  * @reorderable: %TRUE, if the tree can be reordered.
7981  *
7982  * This function is a convenience function to allow you to reorder models that
7983  * support the #GtkDragSourceIface and the #GtkDragDestIface.  Both
7984  * #GtkTreeStore and #GtkListStore support these.  If @reorderable is %TRUE, then
7985  * the user can reorder the model by dragging and dropping columns.  The
7986  * developer can listen to these changes by connecting to the model's
7987  * signals.
7988  *
7989  * This function does not give you any degree of control over the order -- any
7990  * reorderering is allowed.  If more control is needed, you should probably
7991  * handle drag and drop manually.
7992  **/
7993 void
7994 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
7995                                gboolean     reorderable)
7996 {
7997   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7998
7999   reorderable = reorderable != FALSE;
8000
8001   if (tree_view->priv->reorderable == reorderable)
8002     return;
8003
8004   tree_view->priv->reorderable = reorderable;
8005
8006   if (reorderable)
8007     {
8008       gtk_tree_view_enable_model_drag_source (tree_view,
8009                                               GDK_BUTTON1_MASK,
8010                                               row_targets,
8011                                               G_N_ELEMENTS (row_targets),
8012                                               GDK_ACTION_MOVE);
8013       gtk_tree_view_enable_model_drag_dest (tree_view,
8014                                             row_targets,
8015                                             G_N_ELEMENTS (row_targets),
8016                                             GDK_ACTION_MOVE);
8017     }
8018   else
8019     {
8020       gtk_tree_view_unset_rows_drag_source (tree_view);
8021       gtk_tree_view_unset_rows_drag_dest (tree_view);
8022     }
8023
8024   g_object_notify (G_OBJECT (tree_view), "reorderable");
8025 }
8026
8027 static void
8028 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
8029                                GtkTreePath     *path,
8030                                gboolean         clear_and_select)
8031 {
8032   GtkRBTree *tree = NULL;
8033   GtkRBNode *node = NULL;
8034   GdkModifierType state = 0;
8035
8036   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8037     {
8038       GtkTreePath *cursor_path;
8039       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8040       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
8041       gtk_tree_path_free (cursor_path);
8042     }
8043
8044   gtk_tree_row_reference_free (tree_view->priv->cursor);
8045   gtk_get_current_event_state (&state);
8046
8047   tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
8048                                                               tree_view->priv->model,
8049                                                               path);
8050   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
8051   if (tree != NULL)
8052     {
8053       if (clear_and_select && !((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK))
8054         _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
8055                                                   node, tree, path,
8056                                                   state);
8057       gtk_tree_view_clamp_node_visible (tree_view, tree, node);
8058       gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8059     }
8060
8061   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[CURSOR_CHANGED], 0);
8062 }
8063
8064 /**
8065  * gtk_tree_view_get_cursor:
8066  * @tree_view: A #GtkTreeView
8067  * @path: A pointer to be filled with the current cursor path, or %NULL
8068  * @focus_column: A pointer to be filled with the current focus column, or %NULL
8069  *
8070  * Fills in @path and @focus_column with the current path and focus column.  If
8071  * the cursor isn't currently set, then *@path will be %NULL.  If no column
8072  * currently has focus, then *@focus_column will be %NULL.
8073  **/
8074 void
8075 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
8076                           GtkTreePath       **path,
8077                           GtkTreeViewColumn **focus_column)
8078 {
8079   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8080
8081   if (path)
8082     {
8083       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8084         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8085       else
8086         *path = NULL;
8087     }
8088
8089   if (focus_column)
8090     {
8091       *focus_column = tree_view->priv->focus_column;
8092     }
8093 }
8094
8095 /**
8096  * gtk_tree_view_set_cursor:
8097  * @tree_view: A #GtkTreeView
8098  * @path: A #GtkTreePath
8099  * @focus_column: A #GtkTreeViewColumn, or %NULL
8100  * @start_editing: %TRUE if the specified cell should start being edited.
8101  *
8102  * Sets the current keyboard focus to be at @path, and selects it.  This is
8103  * useful when you want to focus the user's attention on a particular row.  If
8104  * @column is not %NULL, then focus is given to the column specified by it.
8105  * Additionally, if @column is specified, and @start_editing is %TRUE, then
8106  * editing should be started in the specified cell.  Keyboard focus is given to
8107  * the widget after this is called.  Please note that editing can only happen
8108  * when the widget is realized.
8109  **/
8110 void
8111 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
8112                           GtkTreePath       *path,
8113                           GtkTreeViewColumn *focus_column,
8114                           gboolean           start_editing)
8115 {
8116   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8117   g_return_if_fail (path != NULL);
8118   if (focus_column)
8119     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (focus_column));
8120
8121   gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
8122
8123   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8124   if (focus_column && focus_column->visible)
8125     {
8126       GList *list;
8127       gboolean column_in_tree = FALSE;
8128
8129       for (list = tree_view->priv->columns; list; list = list->next)
8130         if (list->data == focus_column)
8131           {
8132             column_in_tree = TRUE;
8133             break;
8134           }
8135       g_return_if_fail (column_in_tree);
8136       tree_view->priv->focus_column = focus_column;
8137       if (start_editing)
8138         gtk_tree_view_start_editing (tree_view, path);
8139     }
8140 }
8141
8142
8143 /**
8144  * gtk_tree_view_get_bin_window:
8145  * @tree_view: A #GtkTreeView
8146  *
8147  * Returns the window that @tree_view renders to.  This is used primarily to
8148  * compare to <literal>event->window</literal> to confirm that the event on
8149  * @tree_view is on the right window.
8150  *
8151  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
8152  **/
8153 GdkWindow *
8154 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
8155 {
8156   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8157
8158   return tree_view->priv->bin_window;
8159 }
8160
8161 /**
8162  * gtk_tree_view_get_path_at_pos:
8163  * @tree_view: A #GtkTreeView.
8164  * @x: The x position to be identified.
8165  * @y: The y position to be identified.
8166  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
8167  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
8168  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
8169  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
8170  *
8171  * Finds the path at the point (@x, @y), relative to widget coordinates.  That
8172  * is, @x and @y are relative to an events coordinates.  It is primarily for
8173  * things like popup menus.  If @path is non-%NULL, then it will be filled with
8174  * the #GtkTreePath at that point.  This path should be freed with
8175  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled with
8176  * the column at that point. @cell_x and @cell_y return the coordinates relative
8177  * to the cell background (i.e. the @background_area passed to
8178  * gtk_cell_renderer_render()).  This function is only meaningful if @tree_view
8179  * is realized.
8180  *
8181  * Return value: %TRUE if a row exists at that coordinate.
8182  **/
8183 gboolean
8184 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
8185                                gint                x,
8186                                gint                y,
8187                                GtkTreePath       **path,
8188                                GtkTreeViewColumn **column,
8189                                gint               *cell_x,
8190                                gint               *cell_y)
8191 {
8192   GtkRBTree *tree;
8193   GtkRBNode *node;
8194   gint y_offset;
8195
8196   g_return_val_if_fail (tree_view != NULL, FALSE);
8197   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
8198
8199   if (path)
8200     *path = NULL;
8201   if (column)
8202     *column = NULL;
8203
8204   if (tree_view->priv->tree == NULL)
8205     return FALSE;
8206
8207   if (x > tree_view->priv->hadjustment->upper)
8208     return FALSE;
8209
8210   if (x < 0 || y < 0)
8211     return FALSE;
8212
8213   if (column || cell_x)
8214     {
8215       GtkTreeViewColumn *tmp_column;
8216       GtkTreeViewColumn *last_column = NULL;
8217       GList *list;
8218       gint remaining_x = x;
8219       gboolean found = FALSE;
8220
8221       for (list = tree_view->priv->columns; list; list = list->next)
8222         {
8223           tmp_column = list->data;
8224
8225           if (tmp_column->visible == FALSE)
8226             continue;
8227
8228           last_column = tmp_column;
8229           if (remaining_x <= tmp_column->width)
8230             {
8231               found = TRUE;
8232
8233               if (column)
8234                 *column = tmp_column;
8235
8236               if (cell_x)
8237                 *cell_x = remaining_x;
8238
8239               break;
8240             }
8241           remaining_x -= tmp_column->width;
8242         }
8243
8244       if (!found)
8245         {
8246           if (column)
8247             *column = last_column;
8248
8249           if (cell_x)
8250             *cell_x = last_column->width + remaining_x;
8251         }
8252     }
8253
8254   if (y < TREE_VIEW_HEADER_HEIGHT (tree_view))
8255     return FALSE;
8256
8257   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
8258                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y + tree_view->priv->vadjustment->value),
8259                                       &tree, &node);
8260
8261   if (tree == NULL)
8262     return FALSE;
8263
8264   if (cell_y)
8265     *cell_y = y_offset;
8266
8267   if (path)
8268     *path = _gtk_tree_view_find_path (tree_view, tree, node);
8269
8270   return TRUE;
8271 }
8272
8273
8274 /**
8275  * gtk_tree_view_get_cell_area:
8276  * @tree_view: a #GtkTreeView
8277  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
8278  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
8279  * @rect: rectangle to fill with cell rect
8280  *
8281  * Fills the bounding rectangle in tree window coordinates for the cell at the
8282  * row specified by @path and the column specified by @column.  If @path is
8283  * %NULL, or points to a path not currently displayed, the @y and @height fields
8284  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
8285  * fields will be filled with 0.  The sum of all cell rects does not cover the
8286  * entire tree; there are extra pixels in between rows, for example. The
8287  * returned rectangle is equivalent to the @cell_area passed to
8288  * gtk_cell_renderer_render().  This function is only valid if #tree_view is
8289  * realized.
8290  **/
8291 void
8292 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
8293                              GtkTreePath        *path,
8294                              GtkTreeViewColumn  *column,
8295                              GdkRectangle       *rect)
8296 {
8297   GtkRBTree *tree = NULL;
8298   GtkRBNode *node = NULL;
8299   gint vertical_separator;
8300   gint horizontal_separator;
8301
8302   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8303   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
8304   g_return_if_fail (rect != NULL);
8305   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
8306   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
8307
8308   gtk_widget_style_get (GTK_WIDGET (tree_view),
8309                         "vertical_separator", &vertical_separator,
8310                         "horizontal_separator", &horizontal_separator,
8311                         NULL);
8312
8313   rect->x = 0;
8314   rect->y = 0;
8315   rect->width = 0;
8316   rect->height = 0;
8317
8318   if (column)
8319     {
8320       rect->x = column->button->allocation.x + horizontal_separator/2;
8321       rect->width = column->button->allocation.width - horizontal_separator;
8322     }
8323
8324   if (path)
8325     {
8326       /* Get vertical coords */
8327       if (_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
8328           tree != NULL)
8329         return;
8330
8331       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
8332       rect->height = CELL_HEIGHT (node, vertical_separator);
8333
8334       if (gtk_tree_view_is_expander_column (tree_view, column) &&
8335           TREE_VIEW_DRAW_EXPANDERS (tree_view))
8336         {
8337           gint depth = gtk_tree_path_get_depth (path) - 1;
8338           rect->x += depth * tree_view->priv->tab_offset;
8339           rect->width -= depth * tree_view->priv->tab_offset;
8340           rect->width = MAX (rect->width, 0);
8341         }
8342     }
8343 }
8344
8345 /**
8346  * gtk_tree_view_get_background_area:
8347  * @tree_view: a #GtkTreeView
8348  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
8349  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
8350  * @rect: rectangle to fill with cell background rect
8351  *
8352  * Fills the bounding rectangle in tree window coordinates for the cell at the
8353  * row specified by @path and the column specified by @column.  If @path is
8354  * %NULL, or points to a node not found in the tree, the @y and @height fields of
8355  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
8356  * fields will be filled with 0.  The returned rectangle is equivalent to the
8357  * @background_area passed to gtk_cell_renderer_render().  These background
8358  * areas tile to cover the entire tree window (except for the area used for
8359  * header buttons). Contrast with the @cell_area, returned by
8360  * gtk_tree_view_get_cell_area(), which returns only the cell itself, excluding
8361  * surrounding borders and the tree expander area.
8362  *
8363  **/
8364 void
8365 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
8366                                    GtkTreePath        *path,
8367                                    GtkTreeViewColumn  *column,
8368                                    GdkRectangle       *rect)
8369 {
8370   GtkRBTree *tree = NULL;
8371   GtkRBNode *node = NULL;
8372
8373   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8374   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
8375   g_return_if_fail (rect != NULL);
8376
8377   rect->x = 0;
8378   rect->y = 0;
8379   rect->width = 0;
8380   rect->height = 0;
8381
8382   if (path)
8383     {
8384       /* Get vertical coords */
8385
8386       if (_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
8387           tree != NULL)
8388         return;
8389
8390       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
8391
8392       rect->height = BACKGROUND_HEIGHT (node);
8393     }
8394
8395   if (column)
8396     {
8397       gint x2 = 0;
8398
8399       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
8400       rect->width = x2 - rect->x;
8401     }
8402 }
8403
8404 /**
8405  * gtk_tree_view_get_visible_rect:
8406  * @tree_view: a #GtkTreeView
8407  * @visible_rect: rectangle to fill
8408  *
8409  * Fills @visible_rect with the currently-visible region of the
8410  * buffer, in tree coordinates. Convert to widget coordinates with
8411  * gtk_tree_view_tree_to_widget_coords(). Tree coordinates start at
8412  * 0,0 for row 0 of the tree, and cover the entire scrollable area of
8413  * the tree.
8414  **/
8415 void
8416 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
8417                                 GdkRectangle *visible_rect)
8418 {
8419   GtkWidget *widget;
8420
8421   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8422
8423   widget = GTK_WIDGET (tree_view);
8424
8425   if (visible_rect)
8426     {
8427       visible_rect->x = tree_view->priv->hadjustment->value;
8428       visible_rect->y = tree_view->priv->vadjustment->value;
8429       visible_rect->width = widget->allocation.width;
8430       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
8431     }
8432 }
8433
8434 /**
8435  * gtk_tree_view_widget_to_tree_coords:
8436  * @tree_view: a #GtkTreeView
8437  * @wx: widget X coordinate
8438  * @wy: widget Y coordinate
8439  * @tx: return location for tree X coordinate
8440  * @ty: return location for tree Y coordinate
8441  *
8442  * Converts widget coordinates to coordinates for the
8443  * tree window (the full scrollable area of the tree).
8444  *
8445  **/
8446 void
8447 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
8448                                      gint         wx,
8449                                      gint         wy,
8450                                      gint        *tx,
8451                                      gint        *ty)
8452 {
8453   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8454
8455   if (tx)
8456     *tx = wx + tree_view->priv->hadjustment->value;
8457   if (ty)
8458     *ty = wy + tree_view->priv->vadjustment->value;
8459 }
8460
8461 /**
8462  * gtk_tree_view_tree_to_widget_coords:
8463  * @tree_view: a #GtkTreeView
8464  * @tx: tree X coordinate
8465  * @ty: tree Y coordinate
8466  * @wx: return location for widget X coordinate
8467  * @wy: return location for widget Y coordinate
8468  *
8469  * Converts tree coordinates (coordinates in full scrollable area of the tree)
8470  * to widget coordinates.
8471  *
8472  **/
8473 void
8474 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
8475                                      gint         tx,
8476                                      gint         ty,
8477                                      gint        *wx,
8478                                      gint        *wy)
8479 {
8480   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8481
8482   if (wx)
8483     *wx = tx - tree_view->priv->hadjustment->value;
8484   if (wy)
8485     *wy = ty - tree_view->priv->vadjustment->value;
8486 }
8487
8488 static void
8489 unset_reorderable (GtkTreeView *tree_view)
8490 {
8491   if (tree_view->priv->reorderable)
8492     {
8493       tree_view->priv->reorderable = FALSE;
8494       g_object_notify (G_OBJECT (tree_view), "reorderable");
8495     }
8496 }
8497
8498 void
8499 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
8500                                         GdkModifierType           start_button_mask,
8501                                         const GtkTargetEntry     *targets,
8502                                         gint                      n_targets,
8503                                         GdkDragAction             actions)
8504 {
8505   TreeViewDragInfo *di;
8506
8507   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8508
8509   di = ensure_info (tree_view);
8510   clear_source_info (di);
8511
8512   di->start_button_mask = start_button_mask;
8513   di->source_target_list = gtk_target_list_new (targets, n_targets);
8514   di->source_actions = actions;
8515
8516   di->source_set = TRUE;
8517
8518   unset_reorderable (tree_view);
8519 }
8520
8521 void
8522 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
8523                                       const GtkTargetEntry     *targets,
8524                                       gint                      n_targets,
8525                                       GdkDragAction             actions)
8526 {
8527   TreeViewDragInfo *di;
8528
8529   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8530
8531   gtk_drag_dest_set (GTK_WIDGET (tree_view),
8532                      0,
8533                      NULL,
8534                      0,
8535                      actions);
8536
8537   di = ensure_info (tree_view);
8538   clear_dest_info (di);
8539
8540   if (targets)
8541     di->dest_target_list = gtk_target_list_new (targets, n_targets);
8542
8543   di->dest_set = TRUE;
8544
8545   unset_reorderable (tree_view);
8546 }
8547
8548 void
8549 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
8550 {
8551   TreeViewDragInfo *di;
8552
8553   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8554
8555   di = get_info (tree_view);
8556
8557   if (di)
8558     {
8559       if (di->source_set)
8560         {
8561           clear_source_info (di);
8562           di->source_set = FALSE;
8563         }
8564
8565       if (!di->dest_set && !di->source_set)
8566         remove_info (tree_view);
8567     }
8568
8569   unset_reorderable (tree_view);
8570 }
8571
8572 void
8573 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
8574 {
8575   TreeViewDragInfo *di;
8576
8577   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8578
8579   di = get_info (tree_view);
8580
8581   if (di)
8582     {
8583       if (di->dest_set)
8584         {
8585           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
8586           clear_dest_info (di);
8587           di->dest_set = FALSE;
8588         }
8589
8590       if (!di->dest_set && !di->source_set)
8591         remove_info (tree_view);
8592     }
8593
8594   unset_reorderable (tree_view);
8595 }
8596
8597 void
8598 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
8599                                  GtkTreePath            *path,
8600                                  GtkTreeViewDropPosition pos)
8601 {
8602   GtkTreePath *current_dest;
8603   /* Note; this function is exported to allow a custom DND
8604    * implementation, so it can't touch TreeViewDragInfo
8605    */
8606
8607   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8608
8609   current_dest = NULL;
8610
8611   if (tree_view->priv->drag_dest_row)
8612     current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
8613
8614   if (current_dest)
8615     {
8616       gtk_tree_view_queue_draw_path (tree_view, current_dest, NULL);
8617       gtk_tree_path_free (current_dest);
8618     }
8619
8620   if (tree_view->priv->drag_dest_row)
8621     gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
8622
8623   tree_view->priv->drag_dest_pos = pos;
8624
8625   if (path)
8626     {
8627       tree_view->priv->drag_dest_row =
8628         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
8629       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
8630     }
8631   else
8632     tree_view->priv->drag_dest_row = NULL;
8633 }
8634
8635 void
8636 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
8637                                  GtkTreePath             **path,
8638                                  GtkTreeViewDropPosition  *pos)
8639 {
8640   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8641
8642   if (path)
8643     {
8644       if (tree_view->priv->drag_dest_row)
8645         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
8646       else
8647         *path = NULL;
8648     }
8649
8650   if (pos)
8651     *pos = tree_view->priv->drag_dest_pos;
8652 }
8653
8654 gboolean
8655 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
8656                                    gint                     drag_x,
8657                                    gint                     drag_y,
8658                                    GtkTreePath            **path,
8659                                    GtkTreeViewDropPosition *pos)
8660 {
8661   gint cell_y;
8662   gdouble offset_into_row;
8663   gdouble quarter;
8664   gint x, y;
8665   GdkRectangle cell;
8666   GtkTreeViewColumn *column = NULL;
8667   GtkTreePath *tmp_path = NULL;
8668
8669   /* Note; this function is exported to allow a custom DND
8670    * implementation, so it can't touch TreeViewDragInfo
8671    */
8672
8673   g_return_val_if_fail (tree_view != NULL, FALSE);
8674   g_return_val_if_fail (drag_x >= 0, FALSE);
8675   g_return_val_if_fail (drag_y >= 0, FALSE);
8676   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
8677
8678
8679   if (path)
8680     *path = NULL;
8681
8682   if (tree_view->priv->tree == NULL)
8683     return FALSE;
8684
8685   /* remember that drag_x and drag_y are in widget coords, convert to tree window */
8686
8687   gtk_tree_view_widget_to_tree_coords (tree_view, drag_x, drag_y,
8688                                        &x, &y);
8689
8690   /* If in the top quarter of a row, we drop before that row; if
8691    * in the bottom quarter, drop after that row; if in the middle,
8692    * and the row has children, drop into the row.
8693    */
8694
8695   if (!gtk_tree_view_get_path_at_pos (tree_view,
8696                                       x, y,
8697                                       &tmp_path,
8698                                       &column,
8699                                       NULL,
8700                                       &cell_y))
8701     return FALSE;
8702
8703   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
8704                                      &cell);
8705
8706   offset_into_row = cell_y;
8707
8708   if (path)
8709     *path = tmp_path;
8710   else
8711     gtk_tree_path_free (tmp_path);
8712
8713   tmp_path = NULL;
8714
8715   quarter = cell.height / 4.0;
8716
8717   if (pos)
8718     {
8719       if (offset_into_row < quarter)
8720         {
8721           *pos = GTK_TREE_VIEW_DROP_BEFORE;
8722         }
8723       else if (offset_into_row < quarter * 2)
8724         {
8725           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
8726         }
8727       else if (offset_into_row < quarter * 3)
8728         {
8729           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
8730         }
8731       else
8732         {
8733           *pos = GTK_TREE_VIEW_DROP_AFTER;
8734         }
8735     }
8736
8737   return TRUE;
8738 }
8739
8740
8741
8742 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
8743 /**
8744  * gtk_tree_view_create_row_drag_icon:
8745  * @tree_view: a #GtkTreeView
8746  * @path: a #GtkTreePath in @tree_view
8747  *
8748  * Creates a #GdkPixmap representation of the row at @path.  This image is used
8749  * for a drag icon.
8750  *
8751  * Return value: a newly-allocated pixmap of the drag icon.
8752  **/
8753 GdkPixmap *
8754 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
8755                                     GtkTreePath  *path)
8756 {
8757   GtkTreeIter   iter;
8758   GtkRBTree    *tree;
8759   GtkRBNode    *node;
8760   gint cell_offset;
8761   GList *list;
8762   GdkRectangle background_area;
8763   GdkRectangle expose_area;
8764   GtkWidget *widget;
8765   gint depth;
8766   /* start drawing inside the black outline */
8767   gint x = 1, y = 1;
8768   GdkDrawable *drawable;
8769   gint bin_window_width;
8770
8771   widget = GTK_WIDGET (tree_view);
8772
8773   depth = gtk_tree_path_get_depth (path);
8774
8775   _gtk_tree_view_find_node (tree_view,
8776                             path,
8777                             &tree,
8778                             &node);
8779
8780   if (tree == NULL)
8781     return NULL;
8782
8783   if (!gtk_tree_model_get_iter (tree_view->priv->model,
8784                                 &iter,
8785                                 path))
8786     return NULL;
8787
8788   cell_offset = x;
8789
8790   background_area.y = y;
8791   background_area.height = BACKGROUND_HEIGHT (node);
8792
8793   gdk_drawable_get_size (tree_view->priv->bin_window,
8794                          &bin_window_width, NULL);
8795
8796   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
8797                              bin_window_width + 2,
8798                              background_area.height + 2,
8799                              -1);
8800
8801   expose_area.x = 0;
8802   expose_area.y = 0;
8803   expose_area.width = bin_window_width + 2;
8804   expose_area.height = background_area.height + 2;
8805
8806   gdk_draw_rectangle (drawable,
8807                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
8808                       TRUE,
8809                       0, 0,
8810                       bin_window_width + 2,
8811                       background_area.height + 2);
8812
8813   gdk_draw_rectangle (drawable,
8814                       widget->style->black_gc,
8815                       FALSE,
8816                       0, 0,
8817                       bin_window_width + 1,
8818                       background_area.height + 1);
8819
8820   for (list = tree_view->priv->columns; list; list = list->next)
8821     {
8822       GtkTreeViewColumn *column = list->data;
8823       GdkRectangle cell_area;
8824       gint vertical_separator;
8825
8826       if (!column->visible)
8827         continue;
8828
8829       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
8830                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
8831                                                node->children?TRUE:FALSE);
8832
8833       background_area.x = cell_offset;
8834       background_area.width = column->width;
8835
8836       cell_area = background_area;
8837
8838       gtk_widget_style_get (widget, "vertical_separator", &vertical_separator, NULL);
8839       cell_area.y += vertical_separator / 2;
8840       cell_area.height -= vertical_separator;
8841
8842       if (gtk_tree_view_is_expander_column (tree_view, column) &&
8843           TREE_VIEW_DRAW_EXPANDERS(tree_view))
8844         {
8845           cell_area.x += depth * tree_view->priv->tab_offset;
8846           cell_area.width -= depth * tree_view->priv->tab_offset;
8847         }
8848
8849       if (gtk_tree_view_column_cell_is_visible (column))
8850         gtk_tree_view_column_cell_render (column,
8851                                           drawable,
8852                                           &background_area,
8853                                           &cell_area,
8854                                           &expose_area,
8855                                           0);
8856
8857       cell_offset += column->width;
8858     }
8859
8860   return drawable;
8861 }
8862
8863
8864 /**
8865  * gtk_tree_view_set_destroy_count_func:
8866  * @tree_view: A #GtkTreeView
8867  * @func: Function to be called when a view row is destroyed, or %NULL
8868  * @data: User data to be passed to @func, or %NULL
8869  * @destroy: Destroy notifier for @data, or %NULL
8870  *
8871  * This function should almost never be used.  It is meant for private use by
8872  * ATK for determining the number of visible children that are removed when the
8873  * user collapses a row, or a row is deleted.
8874  **/
8875 void
8876 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
8877                                       GtkTreeDestroyCountFunc  func,
8878                                       gpointer                 data,
8879                                       GtkDestroyNotify         destroy)
8880 {
8881   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8882
8883   if (tree_view->priv->destroy_count_destroy)
8884     (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
8885
8886   tree_view->priv->destroy_count_func = func;
8887   tree_view->priv->destroy_count_data = data;
8888   tree_view->priv->destroy_count_destroy = destroy;
8889 }
8890
8891
8892 /*
8893  * Interactive search
8894  */
8895
8896 /**
8897  * gtk_tree_view_set_enable_search:
8898  * @tree_view: A #GtkTreeView
8899  * @enable_search: %TRUE, if the user can search interactively
8900  *
8901  * If @enable_search is set, then the user can type in text to search through
8902  * the tree interactively.
8903  */
8904 void
8905 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
8906                                  gboolean     enable_search)
8907 {
8908   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8909
8910   tree_view->priv->enable_search = !!enable_search;
8911 }
8912
8913 /**
8914  * gtk_tree_view_get_enable_search:
8915  * @tree_view: A #GtkTreeView
8916  *
8917  * Returns whether or not the tree allows interactive searching.
8918  *
8919  * Return value: whether or not to let the user search interactively
8920  */
8921 gboolean
8922 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
8923 {
8924   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8925
8926   return tree_view->priv->enable_search;
8927 }
8928
8929
8930 /**
8931  * gtk_tree_view_get_search_column:
8932  * @tree_view: A #GtkTreeView
8933  *
8934  * Gets the column searched on by the interactive search code.
8935  *
8936  * Return value: the column the interactive search code searches in.
8937  */
8938 gint
8939 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
8940 {
8941   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
8942
8943   return (tree_view->priv->search_column);
8944 }
8945
8946 /**
8947  * gtk_tree_view_set_search_column:
8948  * @tree_view: A #GtkTreeView
8949  * @column: the column to search in
8950  *
8951  * Sets @column as the column where the interactive search code should search
8952  * in.  Additionally, turns on interactive searching.
8953  */
8954 void
8955 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
8956                                  gint         column)
8957 {
8958   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8959   g_return_if_fail (column >= 0);
8960
8961   if (tree_view->priv->search_column == column)
8962     return;
8963
8964   tree_view->priv->search_column = column;
8965
8966 }
8967
8968 /**
8969  * gtk_tree_view_search_get_search_equal_func:
8970  * @tree_view: A #GtkTreeView
8971  *
8972  * Returns the compare function currently in use.
8973  *
8974  * Return value: the currently used compare function for the search code.
8975  */
8976
8977 GtkTreeViewSearchEqualFunc
8978 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
8979 {
8980   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8981
8982   return tree_view->priv->search_equal_func;
8983 }
8984
8985 /**
8986  * gtk_tree_view_set_search_equal_func:
8987  * @tree_view: A #GtkTreeView
8988  * @search_equal_func: the compare function to use during the search
8989  * @search_user_data: user data to pass to @search_equal_func, or %NULL
8990  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
8991  *
8992  * Sets the compare function for the interactive search capabilities.
8993  **/
8994 void
8995 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
8996                                      GtkTreeViewSearchEqualFunc  search_equal_func,
8997                                      gpointer                    search_user_data,
8998                                      GtkDestroyNotify            search_destroy)
8999 {
9000   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9001   g_return_if_fail (search_equal_func !=NULL);
9002
9003   if (tree_view->priv->search_destroy)
9004     (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
9005
9006   tree_view->priv->search_equal_func = search_equal_func;
9007   tree_view->priv->search_user_data = search_user_data;
9008   tree_view->priv->search_destroy = search_destroy;
9009   if (tree_view->priv->search_equal_func == NULL)
9010     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
9011 }
9012
9013 static void
9014 gtk_tree_view_search_dialog_destroy (GtkWidget   *search_dialog,
9015                                      GtkTreeView *tree_view)
9016 {
9017   /* remove data from tree_view */
9018   gtk_object_remove_data (GTK_OBJECT (tree_view),
9019                           GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
9020
9021   gtk_widget_destroy (search_dialog);
9022 }
9023
9024 static void
9025 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
9026                                     GtkWidget   *search_dialog)
9027 {
9028   gint tree_x, tree_y;
9029   gint tree_width, tree_height;
9030   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
9031   GtkRequisition requisition;
9032
9033   /* put window in the lower right corner */
9034   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
9035   gdk_window_get_size (tree_window,
9036                        &tree_width,
9037                        &tree_height);
9038   gtk_widget_size_request (search_dialog, &requisition);
9039   gtk_window_move (GTK_WINDOW (search_dialog),
9040                    tree_x + tree_width - requisition.width,
9041                    tree_y + tree_height);
9042 }
9043
9044 static gboolean
9045 gtk_tree_view_search_delete_event (GtkWidget *widget,
9046                                    GdkEventAny *event,
9047                                    GtkTreeView *tree_view)
9048 {
9049   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
9050
9051   gtk_tree_view_search_dialog_destroy (widget, tree_view);
9052
9053   return TRUE;
9054 }
9055
9056 static gboolean
9057 gtk_tree_view_search_button_press_event (GtkWidget *widget,
9058                                          GdkEventButton *event,
9059                                          GtkTreeView *tree_view)
9060 {
9061   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
9062
9063   gtk_tree_view_search_dialog_destroy (widget, tree_view);
9064
9065   return TRUE;
9066 }
9067
9068 static gboolean
9069 gtk_tree_view_search_key_press_event (GtkWidget *widget,
9070                                       GdkEventKey *event,
9071                                       GtkTreeView *tree_view)
9072 {
9073   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
9074   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9075
9076   /* close window */
9077   if (event->keyval == GDK_Escape ||
9078       event->keyval == GDK_Return ||
9079       event->keyval == GDK_Tab)
9080     {
9081       gtk_tree_view_search_dialog_destroy (widget, tree_view);
9082       return TRUE;
9083     }
9084
9085   /* select previous matching iter */
9086   if (event->keyval == GDK_Up)
9087     {
9088       gtk_tree_view_search_move (widget, tree_view, TRUE);
9089       return TRUE;
9090     }
9091
9092   /* select next matching iter */
9093   if (event->keyval == GDK_Down)
9094     {
9095       gtk_tree_view_search_move (widget, tree_view, FALSE);
9096       return TRUE;
9097     }
9098
9099   return FALSE;
9100 }
9101
9102 static void
9103 gtk_tree_view_search_move (GtkWidget   *window,
9104                            GtkTreeView *tree_view,
9105                            gboolean     up)
9106 {
9107   gboolean ret;
9108   gint *selected_iter;
9109   gint len;
9110   gint count = 0;
9111   gchar *text;
9112   GtkTreeIter iter;
9113   GtkTreeModel *model;
9114   GtkTreeSelection *selection;
9115
9116   text = gtk_object_get_data (GTK_OBJECT (window), "gtk-tree-view-text");
9117   selected_iter = gtk_object_get_data (GTK_OBJECT (window), "gtk-tree-view-selected-iter");
9118
9119   g_return_if_fail (text != NULL);
9120
9121   if (!selected_iter || (up && *selected_iter == 1))
9122     return;
9123
9124   len = strlen (text);
9125
9126   if (len < 1)
9127     return;
9128
9129   model = gtk_tree_view_get_model (tree_view);
9130   selection = gtk_tree_view_get_selection (tree_view);
9131
9132   /* search */
9133   gtk_tree_selection_unselect_all (selection);
9134   gtk_tree_model_get_iter_root (model, &iter);
9135
9136   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
9137                                    &count, up?((*selected_iter) - 1):((*selected_iter + 1)));
9138
9139   if (ret)
9140     {
9141       /* found */
9142       *selected_iter += up?(-1):(1);
9143     }
9144   else
9145     {
9146       /* return to old iter */
9147       count = 0;
9148       gtk_tree_model_get_iter_root (model, &iter);
9149       gtk_tree_view_search_iter (model, selection,
9150                                  &iter, text,
9151                                  &count, *selected_iter);
9152     }
9153 }
9154
9155 static gboolean
9156 gtk_tree_view_search_equal_func (GtkTreeModel *model,
9157                                  gint          column,
9158                                  const gchar  *key,
9159                                  GtkTreeIter  *iter,
9160                                  gpointer      search_data)
9161 {
9162   gboolean retval = TRUE;
9163   gchar *normalized_string;
9164   gchar *normalized_key;
9165   gchar *case_normalized_string;
9166   gchar *case_normalized_key;
9167   GValue value = {0,};
9168   gint key_len;
9169
9170   gtk_tree_model_get_value (model, iter, column, &value);
9171   normalized_string = g_utf8_normalize (g_value_get_string (&value), -1, G_NORMALIZE_ALL);
9172   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
9173   case_normalized_string = g_utf8_casefold (normalized_string, -1);
9174   case_normalized_key = g_utf8_casefold (normalized_key, -1);
9175
9176   key_len = strlen (case_normalized_key);
9177
9178   if (!strncmp (case_normalized_key, case_normalized_string, key_len))
9179     retval = FALSE;
9180
9181   g_value_unset (&value);
9182   g_free (normalized_key);
9183   g_free (normalized_string);
9184   g_free (case_normalized_key);
9185   g_free (case_normalized_string);
9186
9187   return retval;
9188 }
9189
9190 static gboolean
9191 gtk_tree_view_search_iter (GtkTreeModel     *model,
9192                            GtkTreeSelection *selection,
9193                            GtkTreeIter      *iter,
9194                            const gchar      *text,
9195                            gint             *count,
9196                            gint              n)
9197 {
9198   GtkRBTree *tree = NULL;
9199   GtkRBNode *node = NULL;
9200   GtkTreePath *path;
9201
9202   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
9203   GtkTreeViewColumn *column =
9204     gtk_tree_view_get_column (tree_view, tree_view->priv->search_column);
9205
9206   path = gtk_tree_model_get_path (model, iter);
9207   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9208
9209   do
9210     {
9211       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
9212         {
9213           (*count)++;
9214           if (*count == n)
9215             {
9216               gtk_tree_selection_select_iter (selection, iter);
9217               gtk_tree_view_scroll_to_cell (tree_view, path, column,
9218                                             TRUE, 0.5, 0.5);
9219               gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
9220
9221               if (path)
9222                 gtk_tree_path_free (path);
9223
9224               return TRUE;
9225             }
9226         }
9227
9228       if (node->children)
9229         {
9230           gboolean has_child;
9231           GtkTreeIter tmp;
9232
9233           tree = node->children;
9234           node = tree->root;
9235
9236           while (node->left != tree->nil)
9237             node = node->left;
9238
9239           tmp = *iter;
9240           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
9241           gtk_tree_path_append_index (path, 0);
9242
9243           /* sanity check */
9244           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
9245         }
9246       else
9247         {
9248           gboolean done = FALSE;
9249
9250           do
9251             {
9252               node = _gtk_rbtree_next (tree, node);
9253
9254               if (node)
9255                 {
9256                   gboolean has_next;
9257
9258                   has_next = gtk_tree_model_iter_next (model, iter);
9259
9260                   done = TRUE;
9261                   gtk_tree_path_next (path);
9262
9263                   /* sanity check */
9264                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
9265                 }
9266               else
9267                 {
9268                   gboolean has_parent;
9269                   GtkTreeIter tmp_iter = *iter;
9270
9271                   node = tree->parent_node;
9272                   tree = tree->parent_tree;
9273
9274                   if (!tree)
9275                     {
9276                       if (path)
9277                         gtk_tree_path_free (path);
9278
9279                       /* we've run out of tree, done with this func */
9280                       return FALSE;
9281                     }
9282
9283                   has_parent = gtk_tree_model_iter_parent (model,
9284                                                            iter,
9285                                                            &tmp_iter);
9286                   gtk_tree_path_up (path);
9287
9288                   /* sanity check */
9289                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
9290                 }
9291             }
9292           while (!done);
9293         }
9294     }
9295   while (1);
9296
9297   if (path)
9298     gtk_tree_path_free (path);
9299
9300   return FALSE;
9301 }
9302
9303 static void
9304 gtk_tree_view_search_init (GtkWidget   *entry,
9305                            GtkTreeView *tree_view)
9306 {
9307   gint ret;
9308   gint *selected_iter;
9309   gint len;
9310   gint count = 0;
9311   const gchar *text;
9312   GtkWidget *window;
9313   GtkTreeIter iter;
9314   GtkTreeModel *model;
9315   GtkTreeSelection *selection;
9316
9317   g_return_if_fail (GTK_IS_ENTRY (entry));
9318   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9319
9320   window = gtk_widget_get_parent (entry);
9321   text = gtk_entry_get_text (GTK_ENTRY (entry));
9322   len = strlen (text);
9323   model = gtk_tree_view_get_model (tree_view);
9324   selection = gtk_tree_view_get_selection (tree_view);
9325
9326   /* search */
9327   gtk_tree_selection_unselect_all (selection);
9328   selected_iter = gtk_object_get_data (GTK_OBJECT (window), "gtk-tree-view-selected-iter");
9329   if (selected_iter)
9330     g_free (selected_iter);
9331   gtk_object_remove_data (GTK_OBJECT (window), "gtk-tree-view-selected-iter");
9332
9333   if (len < 1)
9334     return;
9335
9336   gtk_tree_model_get_iter_root (model, &iter);
9337
9338   ret = gtk_tree_view_search_iter (model, selection,
9339                                    &iter, text,
9340                                    &count, 1);
9341
9342   if (ret)
9343     {
9344       selected_iter = g_malloc (sizeof (int));
9345       *selected_iter = 1;
9346       gtk_object_set_data (GTK_OBJECT (window), "gtk-tree-view-selected-iter",
9347                            selected_iter);
9348     }
9349 }
9350
9351 static void
9352 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
9353                              GtkTreeView     *tree_view)
9354 {
9355   g_return_if_fail (tree_view->priv->edited_column != NULL);
9356   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
9357   tree_view->priv->edited_column = NULL;
9358
9359   gtk_container_remove (GTK_CONTAINER (tree_view),
9360                         GTK_WIDGET (cell_editable));
9361   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9362 }
9363
9364 static gboolean
9365 gtk_tree_view_start_editing (GtkTreeView *tree_view,
9366                              GtkTreePath *cursor_path)
9367 {
9368   GtkTreeIter iter;
9369   GdkRectangle background_area;
9370   GdkRectangle cell_area;
9371   GtkCellEditable *editable_widget = NULL;
9372   gchar *path_string;
9373   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
9374   gint retval = FALSE;
9375   GtkRBTree *cursor_tree;
9376   GtkRBNode *cursor_node;
9377
9378   g_assert (tree_view->priv->focus_column);
9379
9380   if (! GTK_WIDGET_REALIZED (tree_view))
9381     return FALSE;
9382
9383   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
9384       cursor_node == NULL)
9385     return FALSE;
9386
9387   path_string = gtk_tree_path_to_string (cursor_path);
9388   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
9389   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
9390                                            tree_view->priv->model,
9391                                            &iter,
9392                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9393                                            cursor_node->children?TRUE:FALSE);
9394   gtk_tree_view_get_background_area (tree_view,
9395                                      cursor_path,
9396                                      tree_view->priv->focus_column,
9397                                      &background_area);
9398   gtk_tree_view_get_cell_area (tree_view,
9399                                cursor_path,
9400                                tree_view->priv->focus_column,
9401                                &cell_area);
9402   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
9403                                         &editable_widget,
9404                                         NULL,
9405                                         path_string,
9406                                         &background_area,
9407                                         &cell_area,
9408                                         flags))
9409     {
9410       retval = TRUE;
9411       if (editable_widget != NULL)
9412         {
9413           gtk_tree_view_real_start_editing (tree_view,
9414                                             tree_view->priv->focus_column,
9415                                             cursor_path,
9416                                             editable_widget,
9417                                             &cell_area,
9418                                             NULL,
9419                                             flags);
9420         }
9421
9422     }
9423   g_free (path_string);
9424   return retval;
9425 }
9426
9427 static void
9428 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
9429                                   GtkTreeViewColumn *column,
9430                                   GtkTreePath       *path,
9431                                   GtkCellEditable   *cell_editable,
9432                                   GdkRectangle      *cell_area,
9433                                   GdkEvent          *event,
9434                                   guint              flags)
9435 {
9436   tree_view->priv->edited_column = column;
9437   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
9438   gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
9439   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9440   gtk_tree_view_put (tree_view,
9441                      GTK_WIDGET (cell_editable),
9442                      cell_area->x, cell_area->y, cell_area->width, cell_area->height);
9443   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
9444                                    (GdkEvent *)event);
9445   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
9446   g_signal_connect (cell_editable, "remove_widget", G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
9447 }
9448
9449 static void
9450 gtk_tree_view_stop_editing (GtkTreeView *tree_view)
9451 {
9452   if (tree_view->priv->edited_column == NULL)
9453     return;
9454
9455   gtk_cell_editable_editing_done (tree_view->priv->edited_column->editable_widget);
9456   gtk_cell_editable_remove_widget (tree_view->priv->edited_column->editable_widget);
9457 }
9458