Pileus Git - ~andy/gtk/blob - gtk/gtktreeview.c

   1 /* gtktreeview.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20
  21 #include "gtktreeview.h"
  22 #include "gtkrbtree.h"
  23 #include "gtktreednd.h"
  24 #include "gtktreeprivate.h"
  25 #include "gtkcellrenderer.h"
  26 #include "gtksignal.h"
  27 #include "gtkmain.h"
  28 #include "gtkmarshalers.h"
  29 #include "gtkbutton.h"
  30 #include "gtkalignment.h"
  31 #include "gtklabel.h"
  32 #include "gtkhbox.h"
  33 #include "gtkarrow.h"
  34 #include "gtkintl.h"
  35 #include "gtkbindings.h"
  36 #include "gtkcontainer.h"
  37 #include "gtkentry.h"
  38 #include "gtktreemodelsort.h"
  39
  40 #include <string.h>
  41 #include <gdk/gdkkeysyms.h>
  42
  43 #define GTK_TREE_VIEW_SEARCH_DIALOG_KEY "gtk-tree-view-search-dialog"
  44 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  45 #define GTK_TREE_VIEW_NUM_ROWS_PER_IDLE 500
  46 #define SCROLL_EDGE_SIZE 15
  47 #define EXPANDER_EXTRA_PADDING 4
  48
  49 /* The "background" areas of all rows/cells add up to cover the entire tree.
  50  * The background includes all inter-row and inter-cell spacing.
  51  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  52  * i.e. just the cells, no spacing.
  53  */
  54
  55 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  56 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  57
  58 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  59 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  60
  61 /* This is in Window coordinates */
  62 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  63 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  64
  65
  66 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  67 struct _GtkTreeViewChild
  68 {
  69   GtkWidget *widget;
  70   gint x;
  71   gint y;
  72   gint width;
  73   gint height;
  74 };
  75
  76
  77 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  78 struct _TreeViewDragInfo
  79 {
  80   GdkModifierType start_button_mask;
  81   GtkTargetList *source_target_list;
  82   GdkDragAction source_actions;
  83
  84   GtkTargetList *dest_target_list;
  85
  86   guint source_set : 1;
  87   guint dest_set : 1;
  88 };
  89
  90
  91 /* Signals */
  92 enum
  93 {
  94   ROW_ACTIVATED,
  95   TEST_EXPAND_ROW,
  96   TEST_COLLAPSE_ROW,
  97   ROW_EXPANDED,
  98   ROW_COLLAPSED,
  99   COLUMNS_CHANGED,
 100   CURSOR_CHANGED,
 101   MOVE_CURSOR,
 102   SELECT_ALL,
 103   UNSELECT_ALL,
 104   SELECT_CURSOR_ROW,
 105   TOGGLE_CURSOR_ROW,
 106   EXPAND_COLLAPSE_CURSOR_ROW,
 107   SELECT_CURSOR_PARENT,
 108   START_INTERACTIVE_SEARCH,
 109   FOCUS_COLUMN_HEADER,
 110   LAST_SIGNAL
 111 };
 112
 113 /* Properties */
 114 enum {
 115   PROP_0,
 116   PROP_MODEL,
 117   PROP_HADJUSTMENT,
 118   PROP_VADJUSTMENT,
 119   PROP_HEADERS_VISIBLE,
 120   PROP_HEADERS_CLICKABLE,
 121   PROP_EXPANDER_COLUMN,
 122   PROP_REORDERABLE,
 123   PROP_RULES_HINT,
 124   PROP_ENABLE_SEARCH,
 125   PROP_SEARCH_COLUMN
 126 };
 127
 128 static void     gtk_tree_view_class_init           (GtkTreeViewClass *klass);
 129 static void     gtk_tree_view_init                 (GtkTreeView      *tree_view);
 130
 131 /* object signals */
 132 static void     gtk_tree_view_finalize             (GObject          *object);
 133 static void     gtk_tree_view_set_property         (GObject         *object,
 134                                                     guint            prop_id,
 135                                                     const GValue    *value,
 136                                                     GParamSpec      *pspec);
 137 static void     gtk_tree_view_get_property         (GObject         *object,
 138                                                     guint            prop_id,
 139                                                     GValue          *value,
 140                                                     GParamSpec      *pspec);
 141
 142 /* gtkobject signals */
 143 static void     gtk_tree_view_destroy              (GtkObject        *object);
 144
 145 /* gtkwidget signals */
 146 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 147 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 148 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 149 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 150                                                     GtkRequisition   *requisition);
 151 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 152                                                     GtkAllocation    *allocation);
 153 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 154                                                     GdkEventExpose   *event);
 155 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 156                                                     GdkEventKey      *event);
 157 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 158                                                     GdkEventMotion   *event);
 159 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 160                                                     GdkEventCrossing *event);
 161 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 162                                                     GdkEventCrossing *event);
 163 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 164                                                     GdkEventButton   *event);
 165 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 166                                                     GdkEventButton   *event);
 167 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 168                                                     GtkWidget        *child);
 169 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 170                                                     GdkEventFocus    *event);
 171 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 172                                                     GtkDirectionType  direction);
 173 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 174                                                     GtkStyle         *previous_style);
 175
 176 /* container signals */
 177 static void     gtk_tree_view_remove               (GtkContainer     *container,
 178                                                     GtkWidget        *widget);
 179 static void     gtk_tree_view_forall               (GtkContainer     *container,
 180                                                     gboolean          include_internals,
 181                                                     GtkCallback       callback,
 182                                                     gpointer          callback_data);
 183
 184 /* Source side drag signals */
 185 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 186                                             GdkDragContext   *context);
 187 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 188                                             GdkDragContext   *context);
 189 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 190                                             GdkDragContext   *context,
 191                                             GtkSelectionData *selection_data,
 192                                             guint             info,
 193                                             guint             time);
 194 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 195                                             GdkDragContext   *context);
 196
 197 /* Target side drag signals */
 198 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 199                                                   GdkDragContext   *context,
 200                                                   guint             time);
 201 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 202                                                   GdkDragContext   *context,
 203                                                   gint              x,
 204                                                   gint              y,
 205                                                   guint             time);
 206 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 207                                                   GdkDragContext   *context,
 208                                                   gint              x,
 209                                                   gint              y,
 210                                                   guint             time);
 211 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 212                                                   GdkDragContext   *context,
 213                                                   gint              x,
 214                                                   gint              y,
 215                                                   GtkSelectionData *selection_data,
 216                                                   guint             info,
 217                                                   guint             time);
 218
 219 /* tree_model signals */
 220 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 221                                                            GtkAdjustment   *hadj,
 222                                                            GtkAdjustment   *vadj);
 223 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 224                                                            GtkMovementStep  step,
 225                                                            gint             count);
 226 static void gtk_tree_view_real_select_all                 (GtkTreeView     *tree_view);
 227 static void gtk_tree_view_real_unselect_all               (GtkTreeView     *tree_view);
 228 static void gtk_tree_view_real_select_cursor_row          (GtkTreeView     *tree_view,
 229                                                            gboolean         start_editing);
 230 static void gtk_tree_view_real_toggle_cursor_row          (GtkTreeView     *tree_view);
 231 static void gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 232                                                            gboolean         logical,
 233                                                            gboolean         expand,
 234                                                            gboolean         open_all);
 235 static void gtk_tree_view_real_select_cursor_parent       (GtkTreeView     *tree_view);
 236 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 237                                                            GtkTreePath     *path,
 238                                                            GtkTreeIter     *iter,
 239                                                            gpointer         data);
 240 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 241                                                            GtkTreePath     *path,
 242                                                            GtkTreeIter     *iter,
 243                                                            gpointer         data);
 244 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 245                                                            GtkTreePath     *path,
 246                                                            GtkTreeIter     *iter,
 247                                                            gpointer         data);
 248 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 249                                                            GtkTreePath     *path,
 250                                                            gpointer         data);
 251 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 252                                                            GtkTreePath     *parent,
 253                                                            GtkTreeIter     *iter,
 254                                                            gint            *new_order,
 255                                                            gpointer         data);
 256
 257 /* Incremental reflow */
 258 static gboolean validate_row             (GtkTreeView *tree_view,
 259                                           GtkRBTree   *tree,
 260                                           GtkRBNode   *node,
 261                                           GtkTreeIter *iter,
 262                                           GtkTreePath *path);
 263 static void     validate_visible_area    (GtkTreeView *tree_view);
 264 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 265 static gboolean presize_handler_callback (gpointer     data);
 266 static void     install_presize_handler  (GtkTreeView *tree_view);
 267 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 268 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 269
 270
 271 /* Internal functions */
 272 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView       *tree_view,
 273                                                               GtkTreeViewColumn *column);
 274 static void     gtk_tree_view_add_move_binding               (GtkBindingSet     *binding_set,
 275                                                               guint              keyval,
 276                                                               guint              modmask,
 277                                                               GtkMovementStep    step,
 278                                                               gint               count);
 279 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView       *tree_view,
 280                                                               GtkRBTree         *tree);
 281 static void     gtk_tree_view_queue_draw_path                (GtkTreeView       *tree_view,
 282                                                               GtkTreePath       *path,
 283                                                               GdkRectangle      *clip_rect);
 284 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView       *tree_view,
 285                                                               GtkRBTree         *tree,
 286                                                               GtkRBNode         *node,
 287                                                               GdkRectangle      *clip_rect);
 288 static void     gtk_tree_view_draw_arrow                     (GtkTreeView       *tree_view,
 289                                                               GtkRBTree         *tree,
 290                                                               GtkRBNode         *node,
 291                                                               gint               x,
 292                                                               gint               y);
 293 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView       *tree_view,
 294                                                               GtkRBTree         *tree,
 295                                                               gint              *x1,
 296                                                               gint              *x2);
 297 static gint     gtk_tree_view_new_column_width               (GtkTreeView       *tree_view,
 298                                                               gint               i,
 299                                                               gint              *x);
 300 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment     *adjustment,
 301                                                               GtkTreeView       *tree_view);
 302 static void     gtk_tree_view_build_tree                     (GtkTreeView       *tree_view,
 303                                                               GtkRBTree         *tree,
 304                                                               GtkTreeIter       *iter,
 305                                                               gint               depth,
 306                                                               gboolean           recurse);
 307 static gboolean gtk_tree_view_discover_dirty_iter            (GtkTreeView       *tree_view,
 308                                                               GtkTreeIter       *iter,
 309                                                               gint               depth,
 310                                                               gint              *height,
 311                                                               GtkRBNode         *node);
 312 static void     gtk_tree_view_discover_dirty                 (GtkTreeView       *tree_view,
 313                                                               GtkRBTree         *tree,
 314                                                               GtkTreeIter       *iter,
 315                                                               gint               depth);
 316 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView       *tree_view,
 317                                                               GtkRBTree         *tree,
 318                                                               GtkRBNode         *node);
 319 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView       *tree_view,
 320                                                               GtkTreeViewColumn *column);
 321 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView       *tree_view,
 322                                                               GdkEventMotion    *event);
 323 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView       *tree_view);
 324 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView       *tree_view,
 325                                                               gint               count);
 326 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView       *tree_view,
 327                                                               gint               count);
 328 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView       *tree_view,
 329                                                               gint               count);
 330 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView       *tree_view,
 331                                                               gint               count);
 332 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView       *tree_view,
 333                                                               GtkTreePath       *path,
 334                                                               GtkRBTree         *tree,
 335                                                               GtkRBNode         *node,
 336                                                               gboolean           animate);
 337 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView       *tree_view,
 338                                                               GtkTreePath       *path,
 339                                                               GtkRBTree         *tree,
 340                                                               GtkRBNode         *node,
 341                                                               gboolean           open_all,
 342                                                               gboolean           animate);
 343 static void     gtk_tree_view_real_set_cursor                (GtkTreeView       *tree_view,
 344                                                               GtkTreePath       *path,
 345                                                               gboolean           clear_and_select);
 346 static void     gtk_tree_view_column_autosize                (GtkTreeView       *tree_view,
 347                                                               GtkTreeViewColumn *tree_column);
 348
 349 /* interactive search */
 350 static void     gtk_tree_view_search_dialog_destroy     (GtkWidget        *search_dialog,
 351                                                          GtkTreeView      *tree_view);
 352 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 353                                                          GtkWidget        *search_dialog);
 354 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 355                                                          GtkMenu          *menu,
 356                                                          gpointer          data);
 357 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 358 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 359                                                          gpointer          data);
 360 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 361                                                          GdkEventAny      *event,
 362                                                          GtkTreeView      *tree_view);
 363 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 364                                                          GdkEventButton   *event,
 365                                                          GtkTreeView      *tree_view);
 366 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 367                                                          GdkEventKey      *event,
 368                                                          GtkTreeView      *tree_view);
 369 static void     gtk_tree_view_search_move               (GtkWidget        *window,
 370                                                          GtkTreeView      *tree_view,
 371                                                          gboolean          up);
 372 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 373                                                          gint              column,
 374                                                          const gchar      *key,
 375                                                          GtkTreeIter      *iter,
 376                                                          gpointer          search_data);
 377 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 378                                                          GtkTreeSelection *selection,
 379                                                          GtkTreeIter      *iter,
 380                                                          const gchar      *text,
 381                                                          gint             *count,
 382                                                          gint              n);
 383 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 384                                                          GtkTreeView      *tree_view);
 385 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 386                                                          GtkWidget        *child_widget,
 387                                                          gint              x,
 388                                                          gint              y,
 389                                                          gint              width,
 390                                                          gint              height);
 391 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 392                                                          GtkTreePath      *cursor_path);
 393 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 394                                               GtkTreeViewColumn *column,
 395                                               GtkTreePath       *path,
 396                                               GtkCellEditable   *cell_editable,
 397                                               GdkRectangle      *cell_area,
 398                                               GdkEvent          *event,
 399                                               guint              flags);
 400 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 401                                                          gboolean     cancel_editing);
 402 static void gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view);
 403 static void gtk_tree_view_real_focus_column_header      (GtkTreeView *tree_view);
 404 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 405                                                          GtkTreeViewColumn *column,
 406                                                          gint               drop_position);
 407
 408
 409 static GtkContainerClass *parent_class = NULL;
 410 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 411
 412 \f
 413
 414 /* GType Methods
 415  */
 416
 417 GtkType
 418 gtk_tree_view_get_type (void)
 419 {
 420   static GtkType tree_view_type = 0;
 421
 422   if (!tree_view_type)
 423     {
 424       static const GTypeInfo tree_view_info =
 425       {
 426         sizeof (GtkTreeViewClass),
 427         NULL,           /* base_init */
 428         NULL,           /* base_finalize */
 429         (GClassInitFunc) gtk_tree_view_class_init,
 430         NULL,           /* class_finalize */
 431         NULL,           /* class_data */
 432         sizeof (GtkTreeView),
 433         0,              /* n_preallocs */
 434         (GInstanceInitFunc) gtk_tree_view_init
 435       };
 436
 437       tree_view_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView", &tree_view_info, 0);
 438     }
 439
 440   return tree_view_type;
 441 }
 442
 443 static void
 444 gtk_tree_view_class_init (GtkTreeViewClass *class)
 445 {
 446   GObjectClass *o_class;
 447   GtkObjectClass *object_class;
 448   GtkWidgetClass *widget_class;
 449   GtkContainerClass *container_class;
 450   GtkBindingSet *binding_set;
 451
 452   parent_class = g_type_class_peek_parent (class);
 453   binding_set = gtk_binding_set_by_class (class);
 454
 455   o_class = (GObjectClass *) class;
 456   object_class = (GtkObjectClass *) class;
 457   widget_class = (GtkWidgetClass *) class;
 458   container_class = (GtkContainerClass *) class;
 459
 460   /* GObject signals */
 461   o_class->set_property = gtk_tree_view_set_property;
 462   o_class->get_property = gtk_tree_view_get_property;
 463   o_class->finalize = gtk_tree_view_finalize;
 464
 465   /* GtkObject signals */
 466   object_class->destroy = gtk_tree_view_destroy;
 467
 468   /* GtkWidget signals */
 469   widget_class->map = gtk_tree_view_map;
 470   widget_class->realize = gtk_tree_view_realize;
 471   widget_class->unrealize = gtk_tree_view_unrealize;
 472   widget_class->size_request = gtk_tree_view_size_request;
 473   widget_class->size_allocate = gtk_tree_view_size_allocate;
 474   widget_class->button_press_event = gtk_tree_view_button_press;
 475   widget_class->button_release_event = gtk_tree_view_button_release;
 476   widget_class->motion_notify_event = gtk_tree_view_motion;
 477   widget_class->expose_event = gtk_tree_view_expose;
 478   widget_class->key_press_event = gtk_tree_view_key_press;
 479   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 480   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 481   widget_class->focus_out_event = gtk_tree_view_focus_out;
 482   widget_class->drag_begin = gtk_tree_view_drag_begin;
 483   widget_class->drag_end = gtk_tree_view_drag_end;
 484   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 485   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 486   widget_class->drag_leave = gtk_tree_view_drag_leave;
 487   widget_class->drag_motion = gtk_tree_view_drag_motion;
 488   widget_class->drag_drop = gtk_tree_view_drag_drop;
 489   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 490   widget_class->focus = gtk_tree_view_focus;
 491   widget_class->style_set = gtk_tree_view_style_set;
 492
 493   /* GtkContainer signals */
 494   container_class->remove = gtk_tree_view_remove;
 495   container_class->forall = gtk_tree_view_forall;
 496   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 497
 498   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 499   class->move_cursor = gtk_tree_view_real_move_cursor;
 500   class->select_all = gtk_tree_view_real_select_all;
 501   class->unselect_all = gtk_tree_view_real_unselect_all;
 502   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 503   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 504   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 505   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 506   class->start_interactive_search = gtk_tree_view_real_start_interactive_search;
 507   class->focus_column_header = gtk_tree_view_real_focus_column_header;
 508
 509   /* Properties */
 510
 511   g_object_class_install_property (o_class,
 512                                    PROP_MODEL,
 513                                    g_param_spec_object ("model",
 514                                                         _("TreeView Model"),
 515                                                         _("The model for the tree view"),
 516                                                         GTK_TYPE_TREE_MODEL,
 517                                                         G_PARAM_READWRITE));
 518
 519   g_object_class_install_property (o_class,
 520                                    PROP_HADJUSTMENT,
 521                                    g_param_spec_object ("hadjustment",
 522                                                         _("Horizontal Adjustment"),
 523                                                         _("Horizontal Adjustment for the widget"),
 524                                                         GTK_TYPE_ADJUSTMENT,
 525                                                         G_PARAM_READWRITE));
 526
 527   g_object_class_install_property (o_class,
 528                                    PROP_VADJUSTMENT,
 529                                    g_param_spec_object ("vadjustment",
 530                                                         _("Vertical Adjustment"),
 531                                                         _("Vertical Adjustment for the widget"),
 532                                                         GTK_TYPE_ADJUSTMENT,
 533                                                         G_PARAM_READWRITE));
 534
 535   g_object_class_install_property (o_class,
 536                                    PROP_HEADERS_VISIBLE,
 537                                    g_param_spec_boolean ("headers_visible",
 538                                                          _("Visible"),
 539                                                          _("Show the column header buttons"),
 540                                                          TRUE,
 541                                                          G_PARAM_READWRITE));
 542
 543   g_object_class_install_property (o_class,
 544                                    PROP_HEADERS_CLICKABLE,
 545                                    g_param_spec_boolean ("headers_clickable",
 546                                                          _("Headers Clickable"),
 547                                                          _("Column headers respond to click events"),
 548                                                          FALSE,
 549                                                          G_PARAM_WRITABLE));
 550
 551   g_object_class_install_property (o_class,
 552                                    PROP_EXPANDER_COLUMN,
 553                                    g_param_spec_object ("expander_column",
 554                                                         _("Expander Column"),
 555                                                         _("Set the column for the expander column"),
 556                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 557                                                         G_PARAM_READWRITE));
 558
 559   g_object_class_install_property (o_class,
 560                                    PROP_REORDERABLE,
 561                                    g_param_spec_boolean ("reorderable",
 562                                                          _("Reorderable"),
 563                                                          _("View is reorderable"),
 564                                                          FALSE,
 565                                                          G_PARAM_READWRITE));
 566
 567   g_object_class_install_property (o_class,
 568                                    PROP_RULES_HINT,
 569                                    g_param_spec_boolean ("rules_hint",
 570                                                          _("Rules Hint"),
 571                                                          _("Set a hint to the theme engine to draw rows in alternating colors"),
 572                                                          FALSE,
 573                                                          G_PARAM_READWRITE));
 574
 575     g_object_class_install_property (o_class,
 576                                      PROP_ENABLE_SEARCH,
 577                                      g_param_spec_boolean ("enable_search",
 578                                                            _("Enable Search"),
 579                                                            _("View allows user to search through columns interactively"),
 580                                                            TRUE,
 581                                                            G_PARAM_READWRITE));
 582
 583     g_object_class_install_property (o_class,
 584                                      PROP_SEARCH_COLUMN,
 585                                      g_param_spec_int ("search_column",
 586                                                        _("Search Column"),
 587                                                        _("Model column to search through when searching through code"),
 588                                                        -1,
 589                                                        G_MAXINT,
 590                                                        0,
 591                                                        G_PARAM_READWRITE));
 592
 593   /* Style properties */
 594 #define _TREE_VIEW_EXPANDER_SIZE 10
 595 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 596 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 597
 598   gtk_widget_class_install_style_property (widget_class,
 599                                            g_param_spec_int ("expander_size",
 600                                                              _("Expander Size"),
 601                                                              _("Size of the expander arrow."),
 602                                                              0,
 603                                                              G_MAXINT,
 604                                                              _TREE_VIEW_EXPANDER_SIZE,
 605                                                              G_PARAM_READABLE));
 606
 607   gtk_widget_class_install_style_property (widget_class,
 608                                            g_param_spec_int ("vertical_separator",
 609                                                              _("Vertical Separator Width"),
 610                                                              _("Vertical space between cells.  Must be an even number."),
 611                                                              0,
 612                                                              G_MAXINT,
 613                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 614                                                              G_PARAM_READABLE));
 615
 616   gtk_widget_class_install_style_property (widget_class,
 617                                            g_param_spec_int ("horizontal_separator",
 618                                                              _("Horizontal Separator Width"),
 619                                                              _("Horizontal space between cells.  Must be an even number."),
 620                                                              0,
 621                                                              G_MAXINT,
 622                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 623                                                              G_PARAM_READABLE));
 624
 625   gtk_widget_class_install_style_property (widget_class,
 626                                            g_param_spec_boolean ("allow_rules",
 627                                                                  _("Allow Rules"),
 628                                                                  _("Allow drawing of alternating color rows."),
 629                                                                  TRUE,
 630                                                                  G_PARAM_READABLE));
 631
 632   gtk_widget_class_install_style_property (widget_class,
 633                                            g_param_spec_boolean ("indent_expanders",
 634                                                                  _("Indent Expanders"),
 635                                                                  _("Make the expanders indented."),
 636                                                                  TRUE,
 637                                                                  G_PARAM_READABLE));
 638   /* Signals */
 639   widget_class->set_scroll_adjustments_signal =
 640     gtk_signal_new ("set_scroll_adjustments",
 641                     GTK_RUN_LAST,
 642                     GTK_CLASS_TYPE (object_class),
 643                     GTK_SIGNAL_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 644                     _gtk_marshal_VOID__OBJECT_OBJECT,
 645                     GTK_TYPE_NONE, 2,
 646                     GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
 647
 648   tree_view_signals[ROW_ACTIVATED] =
 649     gtk_signal_new ("row_activated",
 650                     GTK_RUN_LAST | GTK_RUN_ACTION,
 651                     GTK_CLASS_TYPE (object_class),
 652                     GTK_SIGNAL_OFFSET (GtkTreeViewClass, row_activated),
 653                     _gtk_marshal_VOID__BOXED_OBJECT,
 654                     GTK_TYPE_NONE, 2,
 655                     GTK_TYPE_TREE_PATH,
 656                     GTK_TYPE_TREE_VIEW_COLUMN);
 657
 658   tree_view_signals[TEST_EXPAND_ROW] =
 659     g_signal_new ("test_expand_row",
 660                   G_TYPE_FROM_CLASS (object_class),
 661                   G_SIGNAL_RUN_LAST,
 662                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 663                   _gtk_boolean_handled_accumulator, NULL,
 664                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 665                   G_TYPE_BOOLEAN, 2,
 666                   GTK_TYPE_TREE_ITER,
 667                   GTK_TYPE_TREE_PATH);
 668
 669   tree_view_signals[TEST_COLLAPSE_ROW] =
 670     g_signal_new ("test_collapse_row",
 671                   G_TYPE_FROM_CLASS (object_class),
 672                   G_SIGNAL_RUN_LAST,
 673                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 674                   _gtk_boolean_handled_accumulator, NULL,
 675                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 676                   G_TYPE_BOOLEAN, 2,
 677                   GTK_TYPE_TREE_ITER,
 678                   GTK_TYPE_TREE_PATH);
 679
 680   tree_view_signals[ROW_EXPANDED] =
 681     g_signal_new ("row_expanded",
 682                   G_TYPE_FROM_CLASS (object_class),
 683                   G_SIGNAL_RUN_LAST,
 684                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 685                   NULL, NULL,
 686                   _gtk_marshal_VOID__BOXED_BOXED,
 687                   GTK_TYPE_NONE, 2,
 688                   GTK_TYPE_TREE_ITER,
 689                   GTK_TYPE_TREE_PATH);
 690
 691   tree_view_signals[ROW_COLLAPSED] =
 692     g_signal_new ("row_collapsed",
 693                   G_TYPE_FROM_CLASS (object_class),
 694                   G_SIGNAL_RUN_LAST,
 695                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 696                   NULL, NULL,
 697                   _gtk_marshal_VOID__BOXED_BOXED,
 698                   GTK_TYPE_NONE, 2,
 699                   GTK_TYPE_TREE_ITER,
 700                   GTK_TYPE_TREE_PATH);
 701
 702   tree_view_signals[COLUMNS_CHANGED] =
 703     g_signal_new ("columns_changed",
 704                   G_TYPE_FROM_CLASS (object_class),
 705                   G_SIGNAL_RUN_LAST,
 706                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
 707                   NULL, NULL,
 708                   _gtk_marshal_NONE__NONE,
 709                   G_TYPE_NONE, 0);
 710
 711   tree_view_signals[CURSOR_CHANGED] =
 712     g_signal_new ("cursor_changed",
 713                   G_TYPE_FROM_CLASS (object_class),
 714                   G_SIGNAL_RUN_LAST,
 715                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
 716                   NULL, NULL,
 717                   _gtk_marshal_NONE__NONE,
 718                   G_TYPE_NONE, 0);
 719
 720   tree_view_signals[MOVE_CURSOR] =
 721     g_signal_new ("move_cursor",
 722                   G_TYPE_FROM_CLASS (object_class),
 723                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 724                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
 725                   NULL, NULL,
 726                   _gtk_marshal_VOID__ENUM_INT,
 727                   GTK_TYPE_NONE, 2, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT);
 728
 729   tree_view_signals[SELECT_ALL] =
 730     g_signal_new ("select_all",
 731                   G_TYPE_FROM_CLASS (object_class),
 732                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 733                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
 734                   NULL, NULL,
 735                   _gtk_marshal_NONE__NONE,
 736                   GTK_TYPE_NONE, 0);
 737
 738   tree_view_signals[UNSELECT_ALL] =
 739     g_signal_new ("unselect_all",
 740                   G_TYPE_FROM_CLASS (object_class),
 741                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 742                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
 743                   NULL, NULL,
 744                   _gtk_marshal_NONE__NONE,
 745                   GTK_TYPE_NONE, 0);
 746
 747   tree_view_signals[SELECT_CURSOR_ROW] =
 748     g_signal_new ("select_cursor_row",
 749                   G_TYPE_FROM_CLASS (object_class),
 750                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 751                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
 752                   NULL, NULL,
 753                   _gtk_marshal_VOID__BOOLEAN,
 754                   GTK_TYPE_NONE, 1,
 755                   G_TYPE_BOOLEAN);
 756
 757   tree_view_signals[TOGGLE_CURSOR_ROW] =
 758     g_signal_new ("toggle_cursor_row",
 759                   G_TYPE_FROM_CLASS (object_class),
 760                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 761                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
 762                   NULL, NULL,
 763                   _gtk_marshal_NONE__NONE,
 764                   GTK_TYPE_NONE, 0);
 765
 766   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
 767     g_signal_new ("expand_collapse_cursor_row",
 768                   G_TYPE_FROM_CLASS (object_class),
 769                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 770                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
 771                   NULL, NULL,
 772                   _gtk_marshal_VOID__BOOLEAN_BOOLEAN_BOOLEAN,
 773                   GTK_TYPE_NONE, 3, GTK_TYPE_BOOL, GTK_TYPE_BOOL, GTK_TYPE_BOOL);
 774
 775   tree_view_signals[SELECT_CURSOR_PARENT] =
 776     g_signal_new ("select_cursor_parent",
 777                   G_TYPE_FROM_CLASS (object_class),
 778                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 779                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
 780                   NULL, NULL,
 781                   _gtk_marshal_NONE__NONE,
 782                   GTK_TYPE_NONE, 0);
 783
 784   tree_view_signals[START_INTERACTIVE_SEARCH] =
 785     g_signal_new ("start_interactive_search",
 786                   G_TYPE_FROM_CLASS (object_class),
 787                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 788                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
 789                   NULL, NULL,
 790                   _gtk_marshal_NONE__NONE,
 791                   GTK_TYPE_NONE, 0);
 792
 793   tree_view_signals[FOCUS_COLUMN_HEADER] =
 794     g_signal_new ("focus_column_header",
 795                   G_TYPE_FROM_CLASS (object_class),
 796                   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
 797                   G_STRUCT_OFFSET (GtkTreeViewClass, focus_column_header),
 798                   NULL, NULL,
 799                   _gtk_marshal_NONE__NONE,
 800                   GTK_TYPE_NONE, 0);
 801
 802   /* Key bindings */
 803   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0,
 804                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 805
 806   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0,
 807                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 808
 809   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
 810                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
 811
 812   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
 813                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
 814
 815   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0,
 816                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
 817
 818   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0,
 819                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
 820
 821   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0,
 822                                   GTK_MOVEMENT_PAGES, -1);
 823
 824   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0,
 825                                   GTK_MOVEMENT_PAGES, 1);
 826
 827   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move_cursor", 2,
 828                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 829                                 GTK_TYPE_INT, 1);
 830
 831   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move_cursor", 2,
 832                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 833                                 GTK_TYPE_INT, -1);
 834
 835   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK, "move_cursor", 2,
 836                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 837                                 GTK_TYPE_INT, 1);
 838
 839   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK, "move_cursor", 2,
 840                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 841                                 GTK_TYPE_INT, -1);
 842
 843   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 844                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 845                                 GTK_TYPE_INT, 1);
 846
 847   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK|GDK_SHIFT_MASK, "move_cursor", 2,
 848                                 GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
 849                                 GTK_TYPE_INT, -1);
 850
 851   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle_cursor_row", 0);
 852
 853   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select_all", 0);
 854   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select_all", 0);
 855
 856   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect_all", 0);
 857   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect_all", 0);
 858
 859   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select_cursor_row", 1,
 860                                 GTK_TYPE_BOOL, TRUE);
 861
 862   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select_cursor_row", 1,
 863                                 GTK_TYPE_BOOL, TRUE);
 864
 865   /* expand and collapse rows */
 866   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand_collapse_cursor_row", 3,
 867                                 GTK_TYPE_BOOL, FALSE,
 868                                 GTK_TYPE_BOOL, TRUE,
 869                                 GTK_TYPE_BOOL, FALSE);
 870   /* Not doable on US keyboards */
 871   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 872                                 GTK_TYPE_BOOL, FALSE,
 873                                 GTK_TYPE_BOOL, TRUE,
 874                                 GTK_TYPE_BOOL, TRUE);
 875   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand_collapse_cursor_row", 3,
 876                                 GTK_TYPE_BOOL, FALSE,
 877                                 GTK_TYPE_BOOL, TRUE,
 878                                 GTK_TYPE_BOOL, FALSE);
 879   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 880                                 GTK_TYPE_BOOL, FALSE,
 881                                 GTK_TYPE_BOOL, TRUE,
 882                                 GTK_TYPE_BOOL, TRUE);
 883   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 884                                 GTK_TYPE_BOOL, FALSE,
 885                                 GTK_TYPE_BOOL, TRUE,
 886                                 GTK_TYPE_BOOL, TRUE);
 887   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 888                                 GTK_TYPE_BOOL, TRUE,
 889                                 GTK_TYPE_BOOL, TRUE,
 890                                 GTK_TYPE_BOOL, TRUE);
 891
 892   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand_collapse_cursor_row", 3,
 893                                 GTK_TYPE_BOOL, FALSE,
 894                                 GTK_TYPE_BOOL, FALSE,
 895                                 GTK_TYPE_BOOL, FALSE);
 896   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 897                                 GTK_TYPE_BOOL, FALSE,
 898                                 GTK_TYPE_BOOL, FALSE,
 899                                 GTK_TYPE_BOOL, TRUE);
 900   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand_collapse_cursor_row", 3,
 901                                 GTK_TYPE_BOOL, FALSE,
 902                                 GTK_TYPE_BOOL, FALSE,
 903                                 GTK_TYPE_BOOL, FALSE);
 904   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 905                                 GTK_TYPE_BOOL, FALSE,
 906                                 GTK_TYPE_BOOL, FALSE,
 907                                 GTK_TYPE_BOOL, TRUE);
 908   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
 909                                 GTK_TYPE_BOOL, FALSE,
 910                                 GTK_TYPE_BOOL, FALSE,
 911                                 GTK_TYPE_BOOL, TRUE);
 912
 913   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select_cursor_parent", 0);
 914
 915   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start_interactive_search", 0);
 916
 917   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start_interactive_search", 0);
 918
 919   gtk_binding_entry_add_signal (binding_set, GDK_Tab, GDK_SHIFT_MASK, "focus_column_header", 0);
 920   gtk_binding_entry_add_signal (binding_set, GDK_KP_Tab, GDK_SHIFT_MASK, "focus_column_header", 0);
 921   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Left_Tab, GDK_SHIFT_MASK, "focus_column_header", 0);
 922 }
 923
 924 static void
 925 gtk_tree_view_init (GtkTreeView *tree_view)
 926 {
 927   tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);
 928   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
 929
 930   tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
 931
 932   /* We need some padding */
 933   tree_view->priv->dy = 0;
 934   tree_view->priv->n_columns = 0;
 935   tree_view->priv->header_height = 1;
 936   tree_view->priv->x_drag = 0;
 937   tree_view->priv->drag_pos = -1;
 938   tree_view->priv->header_has_focus = FALSE;
 939   tree_view->priv->pressed_button = -1;
 940   tree_view->priv->press_start_x = -1;
 941   tree_view->priv->press_start_y = -1;
 942   tree_view->priv->reorderable = FALSE;
 943   tree_view->priv->presize_handler_timer = 0;
 944   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
 945   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
 946   tree_view->priv->enable_search = TRUE;
 947   tree_view->priv->search_column = -1;
 948   tree_view->priv->search_dialog_position_func = gtk_tree_view_search_position_func;
 949   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
 950 }
 951
 952 \f
 953
 954 /* GObject Methods
 955  */
 956
 957 static void
 958 gtk_tree_view_set_property (GObject         *object,
 959                             guint            prop_id,
 960                             const GValue    *value,
 961                             GParamSpec      *pspec)
 962 {
 963   GtkTreeView *tree_view;
 964
 965   tree_view = GTK_TREE_VIEW (object);
 966
 967   switch (prop_id)
 968     {
 969     case PROP_MODEL:
 970       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
 971       break;
 972     case PROP_HADJUSTMENT:
 973       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
 974       break;
 975     case PROP_VADJUSTMENT:
 976       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
 977       break;
 978     case PROP_HEADERS_VISIBLE:
 979       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
 980       break;
 981     case PROP_HEADERS_CLICKABLE:
 982       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
 983       break;
 984     case PROP_EXPANDER_COLUMN:
 985       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
 986       break;
 987     case PROP_REORDERABLE:
 988       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
 989       break;
 990     case PROP_RULES_HINT:
 991       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
 992       break;
 993     case PROP_ENABLE_SEARCH:
 994       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
 995       break;
 996     case PROP_SEARCH_COLUMN:
 997       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
 998       break;
 999     default:
1000       break;
1001     }
1002 }
1003
1004 static void
1005 gtk_tree_view_get_property (GObject    *object,
1006                             guint       prop_id,
1007                             GValue     *value,
1008                             GParamSpec *pspec)
1009 {
1010   GtkTreeView *tree_view;
1011
1012   tree_view = GTK_TREE_VIEW (object);
1013
1014   switch (prop_id)
1015     {
1016     case PROP_MODEL:
1017       g_value_set_object (value, tree_view->priv->model);
1018       break;
1019     case PROP_HADJUSTMENT:
1020       g_value_set_object (value, tree_view->priv->hadjustment);
1021       break;
1022     case PROP_VADJUSTMENT:
1023       g_value_set_object (value, tree_view->priv->vadjustment);
1024       break;
1025     case PROP_HEADERS_VISIBLE:
1026       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1027       break;
1028     case PROP_EXPANDER_COLUMN:
1029       g_value_set_object (value, tree_view->priv->expander_column);
1030       break;
1031     case PROP_REORDERABLE:
1032       g_value_set_boolean (value, tree_view->priv->reorderable);
1033       break;
1034     case PROP_RULES_HINT:
1035       g_value_set_boolean (value, tree_view->priv->has_rules);
1036       break;
1037     case PROP_ENABLE_SEARCH:
1038       g_value_set_boolean (value, tree_view->priv->enable_search);
1039       break;
1040     case PROP_SEARCH_COLUMN:
1041       g_value_set_int (value, tree_view->priv->search_column);
1042       break;
1043     default:
1044       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1045       break;
1046     }
1047 }
1048
1049 static void
1050 gtk_tree_view_finalize (GObject *object)
1051 {
1052   GtkTreeView *tree_view = (GtkTreeView *) object;
1053
1054   g_free (tree_view->priv);
1055
1056   if (G_OBJECT_CLASS (parent_class)->finalize)
1057     (* G_OBJECT_CLASS (parent_class)->finalize) (object);
1058 }
1059
1060 \f
1061
1062 /* GtkObject Methods
1063  */
1064
1065 static void
1066 gtk_tree_view_destroy (GtkObject *object)
1067 {
1068   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1069   GtkWidget *search_dialog;
1070   GList *list;
1071
1072   gtk_tree_view_stop_editing (tree_view, TRUE);
1073
1074   if (tree_view->priv->columns != NULL)
1075     {
1076       list = tree_view->priv->columns;
1077       while (list)
1078         {
1079           GtkTreeViewColumn *column;
1080           column = GTK_TREE_VIEW_COLUMN (list->data);
1081           list = list->next;
1082           gtk_tree_view_remove_column (tree_view, column);
1083         }
1084       tree_view->priv->columns = NULL;
1085     }
1086
1087   if (tree_view->priv->tree != NULL)
1088     {
1089       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1090       _gtk_rbtree_free (tree_view->priv->tree);
1091       tree_view->priv->tree = NULL;
1092     }
1093
1094   if (tree_view->priv->selection != NULL)
1095     {
1096       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1097       g_object_unref (tree_view->priv->selection);
1098       tree_view->priv->selection = NULL;
1099     }
1100
1101   if (tree_view->priv->scroll_to_path != NULL)
1102     {
1103       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1104       tree_view->priv->scroll_to_path = NULL;
1105     }
1106
1107   if (tree_view->priv->drag_dest_row != NULL)
1108     {
1109       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1110       tree_view->priv->drag_dest_row = NULL;
1111     }
1112
1113   if (tree_view->priv->last_single_clicked != NULL)
1114     {
1115       gtk_tree_row_reference_free (tree_view->priv->last_single_clicked);
1116       tree_view->priv->last_single_clicked = NULL;
1117     }
1118
1119   if (tree_view->priv->last_single_clicked_2 != NULL)
1120     {
1121       gtk_tree_row_reference_free (tree_view->priv->last_single_clicked_2);
1122       tree_view->priv->last_single_clicked_2 = NULL;
1123     }
1124
1125   if (tree_view->priv->top_row != NULL)
1126     {
1127       gtk_tree_row_reference_free (tree_view->priv->top_row);
1128       tree_view->priv->top_row = NULL;
1129     }
1130
1131   if (tree_view->priv->column_drop_func_data &&
1132       tree_view->priv->column_drop_func_data_destroy)
1133     {
1134       (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
1135       tree_view->priv->column_drop_func_data = NULL;
1136     }
1137
1138   if (tree_view->priv->destroy_count_destroy &&
1139       tree_view->priv->destroy_count_data)
1140     {
1141       (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
1142       tree_view->priv->destroy_count_data = NULL;
1143     }
1144
1145   gtk_tree_row_reference_free (tree_view->priv->cursor);
1146   tree_view->priv->cursor = NULL;
1147
1148   gtk_tree_row_reference_free (tree_view->priv->anchor);
1149   tree_view->priv->anchor = NULL;
1150
1151   /* destroy interactive search dialog */
1152   search_dialog = gtk_object_get_data (GTK_OBJECT (tree_view),
1153                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
1154   if (search_dialog)
1155     gtk_tree_view_search_dialog_destroy (search_dialog,
1156                                          tree_view);
1157
1158   if (tree_view->priv->search_user_data)
1159     {
1160       (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
1161       tree_view->priv->search_user_data = NULL;
1162     }
1163
1164   gtk_tree_view_set_model (tree_view, NULL);
1165
1166   if (GTK_OBJECT_CLASS (parent_class)->destroy)
1167     (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
1168 }
1169
1170 \f
1171
1172 /* GtkWidget Methods
1173  */
1174
1175 /* GtkWidget::map helper */
1176 static void
1177 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1178 {
1179   GList *list;
1180
1181   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1182
1183   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1184     {
1185       GtkTreeViewColumn *column;
1186
1187       for (list = tree_view->priv->columns; list; list = list->next)
1188         {
1189           column = list->data;
1190           if (GTK_WIDGET_VISIBLE (column->button) &&
1191               !GTK_WIDGET_MAPPED (column->button))
1192             gtk_widget_map (column->button);
1193         }
1194       for (list = tree_view->priv->columns; list; list = list->next)
1195         {
1196           column = list->data;
1197           if (column->visible == FALSE)
1198             continue;
1199           if (column->resizable)
1200             {
1201               gdk_window_raise (column->window);
1202               gdk_window_show (column->window);
1203             }
1204           else
1205             gdk_window_hide (column->window);
1206         }
1207       gdk_window_show (tree_view->priv->header_window);
1208     }
1209 }
1210
1211 static void
1212 gtk_tree_view_map (GtkWidget *widget)
1213 {
1214   GList *tmp_list;
1215   GtkTreeView *tree_view;
1216
1217   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1218
1219   tree_view = GTK_TREE_VIEW (widget);
1220
1221   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1222
1223   tmp_list = tree_view->priv->children;
1224   while (tmp_list)
1225     {
1226       GtkTreeViewChild *child = tmp_list->data;
1227       tmp_list = tmp_list->next;
1228
1229       if (GTK_WIDGET_VISIBLE (child->widget))
1230         {
1231           if (!GTK_WIDGET_MAPPED (child->widget))
1232             gtk_widget_map (child->widget);
1233         }
1234     }
1235   gdk_window_show (tree_view->priv->bin_window);
1236
1237   gtk_tree_view_map_buttons (tree_view);
1238
1239   gdk_window_show (widget->window);
1240 }
1241
1242 static void
1243 gtk_tree_view_realize (GtkWidget *widget)
1244 {
1245   GList *tmp_list;
1246   GtkTreeView *tree_view;
1247   GdkGCValues values;
1248   GdkWindowAttr attributes;
1249   gint attributes_mask;
1250
1251   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1252
1253   tree_view = GTK_TREE_VIEW (widget);
1254
1255   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1256
1257   /* Make the main, clipping window */
1258   attributes.window_type = GDK_WINDOW_CHILD;
1259   attributes.x = widget->allocation.x;
1260   attributes.y = widget->allocation.y;
1261   attributes.width = widget->allocation.width;
1262   attributes.height = widget->allocation.height;
1263   attributes.wclass = GDK_INPUT_OUTPUT;
1264   attributes.visual = gtk_widget_get_visual (widget);
1265   attributes.colormap = gtk_widget_get_colormap (widget);
1266   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1267
1268   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1269
1270   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1271                                    &attributes, attributes_mask);
1272   gdk_window_set_user_data (widget->window, widget);
1273
1274   /* Make the window for the tree */
1275   attributes.x = 0;
1276   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1277   attributes.width = tree_view->priv->width;
1278   attributes.height = widget->allocation.height;
1279   attributes.event_mask = GDK_EXPOSURE_MASK |
1280     GDK_SCROLL_MASK |
1281     GDK_POINTER_MOTION_MASK |
1282     GDK_ENTER_NOTIFY_MASK |
1283     GDK_LEAVE_NOTIFY_MASK |
1284     GDK_BUTTON_PRESS_MASK |
1285     GDK_BUTTON_RELEASE_MASK |
1286     gtk_widget_get_events (widget);
1287
1288   tree_view->priv->bin_window = gdk_window_new (widget->window,
1289                                                 &attributes, attributes_mask);
1290   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1291
1292   /* Make the column header window */
1293   attributes.x = 0;
1294   attributes.y = 0;
1295   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1296   attributes.height = tree_view->priv->header_height;
1297   attributes.event_mask = (GDK_EXPOSURE_MASK |
1298                            GDK_SCROLL_MASK |
1299                            GDK_BUTTON_PRESS_MASK |
1300                            GDK_BUTTON_RELEASE_MASK |
1301                            GDK_KEY_PRESS_MASK |
1302                            GDK_KEY_RELEASE_MASK) |
1303     gtk_widget_get_events (widget);
1304
1305   tree_view->priv->header_window = gdk_window_new (widget->window,
1306                                                    &attributes, attributes_mask);
1307   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1308
1309
1310   values.foreground = (widget->style->white.pixel==0 ?
1311                        widget->style->black:widget->style->white);
1312   values.function = GDK_XOR;
1313   values.subwindow_mode = GDK_INCLUDE_INFERIORS;
1314
1315   /* Add them all up. */
1316   widget->style = gtk_style_attach (widget->style, widget->window);
1317   gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
1318   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1319   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1320
1321   tmp_list = tree_view->priv->children;
1322   while (tmp_list)
1323     {
1324       GtkTreeViewChild *child = tmp_list->data;
1325       tmp_list = tmp_list->next;
1326
1327       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1328     }
1329
1330   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1331     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1332
1333   install_presize_handler (tree_view);
1334 }
1335
1336 static void
1337 gtk_tree_view_unrealize (GtkWidget *widget)
1338 {
1339   GtkTreeView *tree_view;
1340   GList *list;
1341
1342   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1343
1344   tree_view = GTK_TREE_VIEW (widget);
1345
1346   if (tree_view->priv->scroll_timeout != 0)
1347     {
1348       gtk_timeout_remove (tree_view->priv->scroll_timeout);
1349       tree_view->priv->scroll_timeout = 0;
1350     }
1351
1352   if (tree_view->priv->open_dest_timeout != 0)
1353     {
1354       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
1355       tree_view->priv->open_dest_timeout = 0;
1356     }
1357
1358   if (tree_view->priv->expand_collapse_timeout != 0)
1359     {
1360       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
1361       tree_view->priv->expand_collapse_timeout = 0;
1362     }
1363
1364   if (tree_view->priv->presize_handler_timer != 0)
1365     {
1366       gtk_timeout_remove (tree_view->priv->presize_handler_timer);
1367       tree_view->priv->presize_handler_timer = 0;
1368     }
1369
1370   if (tree_view->priv->validate_rows_timer != 0)
1371     {
1372       gtk_timeout_remove (tree_view->priv->validate_rows_timer);
1373       tree_view->priv->validate_rows_timer = 0;
1374     }
1375
1376   for (list = tree_view->priv->columns; list; list = list->next)
1377     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1378
1379   gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
1380   gdk_window_destroy (tree_view->priv->bin_window);
1381   tree_view->priv->bin_window = NULL;
1382
1383   gdk_window_set_user_data (tree_view->priv->header_window, NULL);
1384   gdk_window_destroy (tree_view->priv->header_window);
1385   tree_view->priv->header_window = NULL;
1386
1387   if (tree_view->priv->drag_window)
1388     {
1389       gdk_window_set_user_data (tree_view->priv->drag_window, NULL);
1390       gdk_window_destroy (tree_view->priv->drag_window);
1391       tree_view->priv->drag_window = NULL;
1392     }
1393
1394   if (tree_view->priv->drag_highlight_window)
1395     {
1396       gdk_window_set_user_data (tree_view->priv->drag_highlight_window, NULL);
1397       gdk_window_destroy (tree_view->priv->drag_highlight_window);
1398       tree_view->priv->drag_highlight_window = NULL;
1399     }
1400
1401   /* GtkWidget::unrealize destroys children and widget->window */
1402   if (GTK_WIDGET_CLASS (parent_class)->unrealize)
1403     (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
1404 }
1405
1406 /* GtkWidget::size_request helper */
1407 static void
1408 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1409 {
1410   GList *list;
1411
1412   tree_view->priv->header_height = 0;
1413
1414   if (tree_view->priv->model)
1415     {
1416       for (list = tree_view->priv->columns; list; list = list->next)
1417         {
1418           GtkRequisition requisition;
1419           GtkTreeViewColumn *column = list->data;
1420
1421           if (column->button == NULL)
1422             continue;
1423
1424           column = list->data;
1425
1426           gtk_widget_size_request (column->button, &requisition);
1427           column->button_request = requisition.width;
1428           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1429         }
1430     }
1431 }
1432
1433
1434 static void
1435 gtk_tree_view_update_size (GtkTreeView *tree_view)
1436 {
1437   GList *list;
1438   GtkTreeViewColumn *column;
1439   gint i;
1440
1441   if (tree_view->priv->model == NULL)
1442     {
1443       tree_view->priv->width = 0;
1444       tree_view->priv->height = 0;
1445       return;
1446     }
1447
1448   tree_view->priv->width = 0;
1449   /* keep this in sync with size_allocate below */
1450   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1451     {
1452       gint real_requested_width = 0;
1453       column = list->data;
1454       if (!column->visible)
1455         continue;
1456
1457       if (column->use_resized_width)
1458         {
1459           real_requested_width = column->resized_width;
1460         }
1461       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1462         {
1463           real_requested_width = column->fixed_width;
1464         }
1465       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1466         {
1467           real_requested_width = MAX (column->requested_width, column->button_request);
1468         }
1469       else
1470         {
1471           real_requested_width = column->requested_width;
1472         }
1473
1474       if (column->min_width != -1)
1475         real_requested_width = MAX (real_requested_width, column->min_width);
1476       if (column->max_width != -1)
1477         real_requested_width = MIN (real_requested_width, column->max_width);
1478
1479       tree_view->priv->width += real_requested_width;
1480     }
1481
1482   if (tree_view->priv->tree == NULL)
1483     tree_view->priv->height = 0;
1484   else
1485     tree_view->priv->height = tree_view->priv->tree->root->offset;
1486 }
1487
1488 static void
1489 gtk_tree_view_size_request (GtkWidget      *widget,
1490                             GtkRequisition *requisition)
1491 {
1492   GtkTreeView *tree_view;
1493   GList *tmp_list;
1494
1495   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1496
1497   tree_view = GTK_TREE_VIEW (widget);
1498
1499   /* we validate 50 rows initially just to make sure we have some size */
1500   /* in practice, with a lot of static lists, this should get a good width */
1501   validate_rows_handler (tree_view);
1502   gtk_tree_view_size_request_columns (tree_view);
1503   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
1504
1505   requisition->width = tree_view->priv->width;
1506   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
1507
1508   tmp_list = tree_view->priv->children;
1509
1510   while (tmp_list)
1511     {
1512       GtkTreeViewChild *child = tmp_list->data;
1513       GtkRequisition child_requisition;
1514
1515       tmp_list = tmp_list->next;
1516
1517       if (GTK_WIDGET_VISIBLE (child->widget))
1518         gtk_widget_size_request (child->widget, &child_requisition);
1519     }
1520 }
1521
1522 /* GtkWidget::size_allocate helper */
1523 static void
1524 gtk_tree_view_size_allocate_columns (GtkWidget *widget)
1525 {
1526   GtkTreeView *tree_view;
1527   GList *list, *last_column;
1528   GtkTreeViewColumn *column;
1529   GtkAllocation allocation;
1530   gint width = 0;
1531
1532   tree_view = GTK_TREE_VIEW (widget);
1533
1534   for (last_column = g_list_last (tree_view->priv->columns);
1535        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
1536        last_column = last_column->prev)
1537     ;
1538   if (last_column == NULL)
1539     return;
1540
1541   allocation.y = 0;
1542   allocation.height = tree_view->priv->header_height;
1543
1544   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
1545     {
1546       gint real_requested_width = 0;
1547       column = list->data;
1548       if (!column->visible)
1549         continue;
1550
1551       /* We need to handle the dragged button specially.
1552        */
1553       if (column == tree_view->priv->drag_column)
1554         {
1555           GtkAllocation drag_allocation;
1556           gdk_window_get_size (tree_view->priv->drag_window,
1557                                &(drag_allocation.width), &(drag_allocation.height));
1558           drag_allocation.x = 0;
1559           drag_allocation.y = 0;
1560           gtk_widget_size_allocate (tree_view->priv->drag_column->button, &drag_allocation);
1561           width += drag_allocation.width;
1562           continue;
1563         }
1564
1565       if (column->use_resized_width)
1566         {
1567           real_requested_width = column->resized_width;
1568         }
1569       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
1570         {
1571           real_requested_width = column->fixed_width;
1572         }
1573       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1574         {
1575           real_requested_width = MAX (column->requested_width, column->button_request);
1576         }
1577       else
1578         {
1579           real_requested_width = column->requested_width;
1580           if (real_requested_width < 0)
1581             real_requested_width = 0;
1582         }
1583
1584       if (column->min_width != -1)
1585         real_requested_width = MAX (real_requested_width, column->min_width);
1586       if (column->max_width != -1)
1587         real_requested_width = MIN (real_requested_width, column->max_width);
1588
1589       allocation.x = width;
1590       column->width = real_requested_width;
1591       if (list == last_column &&
1592           width + real_requested_width < widget->allocation.width)
1593         {
1594           column->width += (widget->allocation.width - column->width - width);
1595         }
1596       g_object_notify (G_OBJECT (column), "width");
1597       allocation.width = column->width;
1598       width += column->width;
1599       gtk_widget_size_allocate (column->button, &allocation);
1600       if (column->window)
1601         gdk_window_move_resize (column->window,
1602                                 allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
1603                                 allocation.y,
1604                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
1605     }
1606 }
1607
1608 static void
1609 gtk_tree_view_size_allocate (GtkWidget     *widget,
1610                              GtkAllocation *allocation)
1611 {
1612   GList *tmp_list;
1613   GtkTreeView *tree_view;
1614
1615   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
1616
1617   widget->allocation = *allocation;
1618
1619   tree_view = GTK_TREE_VIEW (widget);
1620
1621   tmp_list = tree_view->priv->children;
1622
1623   while (tmp_list)
1624     {
1625       GtkAllocation allocation;
1626
1627       GtkTreeViewChild *child = tmp_list->data;
1628       tmp_list = tmp_list->next;
1629
1630       /* totally ignore our childs requisition */
1631       allocation.x = child->x;
1632       allocation.y = child->y;
1633       allocation.width = child->width;
1634       allocation.height = child->height;
1635       gtk_widget_size_allocate (child->widget, &allocation);
1636     }
1637
1638
1639   tree_view->priv->hadjustment->page_size = allocation->width;
1640   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
1641   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
1642   tree_view->priv->hadjustment->lower = 0;
1643   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
1644
1645   if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
1646     tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
1647   gtk_adjustment_changed (tree_view->priv->hadjustment);
1648
1649   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
1650   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
1651   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
1652   tree_view->priv->vadjustment->lower = 0;
1653   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
1654
1655   if (tree_view->priv->vadjustment->value + allocation->height > tree_view->priv->height)
1656     gtk_adjustment_set_value (tree_view->priv->vadjustment,
1657                               MAX (tree_view->priv->height - tree_view->priv->vadjustment->page_size, 0));
1658   gtk_adjustment_changed (tree_view->priv->vadjustment);
1659
1660   if (GTK_WIDGET_REALIZED (widget))
1661     {
1662       gdk_window_move_resize (widget->window,
1663                               allocation->x, allocation->y,
1664                               allocation->width, allocation->height);
1665       gdk_window_move_resize (tree_view->priv->header_window,
1666                               - (gint) tree_view->priv->hadjustment->value,
1667                               0,
1668                               MAX (tree_view->priv->width, allocation->width),
1669                               tree_view->priv->header_height);
1670       gdk_window_move_resize (tree_view->priv->bin_window,
1671                               - (gint) tree_view->priv->hadjustment->value,
1672                               TREE_VIEW_HEADER_HEIGHT (tree_view),
1673                               MAX (tree_view->priv->width, allocation->width),
1674                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
1675     }
1676
1677   gtk_tree_view_size_allocate_columns (widget);
1678 }
1679
1680 static gboolean
1681 gtk_tree_view_button_press (GtkWidget      *widget,
1682                             GdkEventButton *event)
1683 {
1684   GtkTreeView *tree_view;
1685   GList *list;
1686   GtkTreeViewColumn *column = NULL;
1687   gint i;
1688   GdkRectangle background_area;
1689   GdkRectangle cell_area;
1690   gint vertical_separator;
1691   gint horizontal_separator;
1692
1693   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
1694   g_return_val_if_fail (event != NULL, FALSE);
1695
1696   tree_view = GTK_TREE_VIEW (widget);
1697   gtk_tree_view_stop_editing (tree_view, FALSE);
1698   gtk_widget_style_get (widget,
1699                         "vertical_separator", &vertical_separator,
1700                         "horizontal_separator", &horizontal_separator,
1701                         NULL);
1702
1703   if (event->window == tree_view->priv->bin_window &&
1704       tree_view->priv->tree != NULL)
1705     {
1706       GtkRBNode *node;
1707       GtkRBTree *tree;
1708       GtkTreePath *path;
1709       gchar *path_string;
1710       gint depth;
1711       gint new_y;
1712       gint y_offset;
1713       gint dval;
1714       gint pre_val, aft_val;
1715       GtkTreeViewColumn *column = NULL;
1716       gint column_handled_click = FALSE;
1717
1718       if (!GTK_WIDGET_HAS_FOCUS (widget))
1719         gtk_widget_grab_focus (widget);
1720       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1721
1722       /* are we in an arrow? */
1723       if (tree_view->priv->prelight_node &&
1724           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
1725         {
1726           if (event->button == 1)
1727             {
1728               gtk_grab_add (widget);
1729               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
1730               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
1731               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
1732                                         tree_view->priv->prelight_tree,
1733                                         tree_view->priv->prelight_node,
1734                                         event->x,
1735                                         event->y);
1736             }
1737           return TRUE;
1738         }
1739
1740       /* find the node that was clicked */
1741       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
1742       if (new_y < 0)
1743         new_y = 0;
1744       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
1745
1746       if (node == NULL)
1747         /* We clicked in dead space */
1748         return TRUE;
1749
1750       /* Get the path and the node */
1751       path = _gtk_tree_view_find_path (tree_view, tree, node);
1752       depth = gtk_tree_path_get_depth (path);
1753       background_area.y = y_offset + event->y;
1754       background_area.height = MAX (GTK_RBNODE_GET_HEIGHT (node),
1755                                     tree_view->priv->expander_size);
1756       background_area.x = 0;
1757
1758       /* Let the column have a chance at selecting it. */
1759       for (list = tree_view->priv->columns; list; list = list->next)
1760         {
1761           column = list->data;
1762
1763           if (!column->visible)
1764             continue;
1765
1766           background_area.width = column->width;
1767           if ((background_area.x > (gint) event->x) ||
1768               (background_area.x + background_area.width <= (gint) event->x))
1769             {
1770               background_area.x += background_area.width;
1771               continue;
1772             }
1773
1774           /* we found the focus column */
1775           cell_area = background_area;
1776           cell_area.width -= horizontal_separator;
1777           cell_area.height -= vertical_separator;
1778           cell_area.x += horizontal_separator/2;
1779           cell_area.y += vertical_separator/2;
1780           if (gtk_tree_view_is_expander_column (tree_view, column) &&
1781               TREE_VIEW_DRAW_EXPANDERS(tree_view))
1782             {
1783               cell_area.x += depth * tree_view->priv->expander_size;
1784               cell_area.width -= depth * tree_view->priv->expander_size;
1785             }
1786           break;
1787         }
1788
1789       if (column == NULL)
1790         return FALSE;
1791
1792       /* decide to edit */
1793       if (event->type == GDK_BUTTON_PRESS &&
1794           !(event->state & gtk_accelerator_get_default_mod_mask ()))
1795         {
1796           GtkCellEditable *cell_editable = NULL;
1797           /* FIXME: get the right flags */
1798           guint flags = 0;
1799           GtkTreeIter iter;
1800
1801           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
1802           gtk_tree_view_column_cell_set_cell_data (column,
1803                                                    tree_view->priv->model,
1804                                                    &iter,
1805                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
1806                                                    node->children?TRUE:FALSE);
1807
1808           path_string = gtk_tree_path_to_string (path);
1809
1810           if (_gtk_tree_view_column_cell_event (column,
1811                                                 &cell_editable,
1812                                                 (GdkEvent *)event,
1813                                                 path_string,
1814                                                 &background_area,
1815                                                 &cell_area, flags))
1816             {
1817               if (cell_editable != NULL &&
1818                   gtk_tree_selection_iter_is_selected (gtk_tree_view_get_selection (tree_view), &iter))
1819                 {
1820                   gtk_tree_view_real_start_editing (tree_view,
1821                                                     column,
1822                                                     path,
1823                                                     cell_editable,
1824                                                     &cell_area,
1825                                                     (GdkEvent *)event,
1826                                                     flags);
1827                   gtk_tree_path_free (path);
1828                   return TRUE;
1829                 }
1830               column_handled_click = TRUE;
1831             }
1832           g_free (path_string);
1833         }
1834
1835       /* select */
1836       pre_val = tree_view->priv->vadjustment->value;
1837
1838       tree_view->priv->focus_column = column;
1839       if (event->state & GDK_CONTROL_MASK)
1840         {
1841           gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
1842           gtk_tree_view_real_toggle_cursor_row (tree_view);
1843         }
1844       else if (event->state & GDK_SHIFT_MASK)
1845         {
1846           gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
1847           gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
1848         }
1849       else
1850         {
1851           gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
1852         }
1853
1854       /* the treeview may have been scrolled because of _set_cursor,
1855        * correct here
1856        */
1857
1858       aft_val = tree_view->priv->vadjustment->value;
1859       dval = pre_val - aft_val;
1860
1861       cell_area.y += dval;
1862       background_area.y += dval;
1863
1864       /* Save press to possibly begin a drag
1865        */
1866       if (!column_handled_click &&
1867           tree_view->priv->pressed_button < 0)
1868         {
1869           tree_view->priv->pressed_button = event->button;
1870           tree_view->priv->press_start_x = event->x;
1871           tree_view->priv->press_start_y = event->y;
1872         }
1873
1874       if (event->button == 1 && event->type == GDK_2BUTTON_PRESS &&
1875           tree_view->priv->last_single_clicked)
1876         {
1877           GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_single_clicked);
1878
1879           if (lsc)
1880             {
1881               if (!gtk_tree_path_compare (lsc, path))
1882                 gtk_tree_view_row_activated (tree_view, path, column);
1883               gtk_tree_path_free (lsc);
1884             }
1885
1886           if (tree_view->priv->last_single_clicked)
1887             gtk_tree_row_reference_free (tree_view->priv->last_single_clicked);
1888           if (tree_view->priv->last_single_clicked_2)
1889             gtk_tree_row_reference_free (tree_view->priv->last_single_clicked_2);
1890           tree_view->priv->last_single_clicked = NULL;
1891           tree_view->priv->last_single_clicked_2 = NULL;
1892         }
1893       else if (event->button == 1 && event->type == GDK_BUTTON_PRESS)
1894         {
1895           if (tree_view->priv->last_single_clicked)
1896             gtk_tree_row_reference_free (tree_view->priv->last_single_clicked);
1897           tree_view->priv->last_single_clicked = tree_view->priv->last_single_clicked_2;
1898           tree_view->priv->last_single_clicked_2 = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
1899         }
1900
1901       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
1902       gtk_tree_path_free (path);
1903       return TRUE;
1904     }
1905
1906   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
1907    */
1908   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
1909     {
1910       column = list->data;
1911       if (event->window == column->window &&
1912           column->resizable &&
1913           column->window)
1914         {
1915           gpointer drag_data;
1916
1917           if (event->type == GDK_2BUTTON_PRESS)
1918             {
1919               gtk_tree_view_column_autosize (tree_view, column);
1920               break;
1921             }
1922
1923           if (gdk_pointer_grab (column->window, FALSE,
1924                                 GDK_POINTER_MOTION_HINT_MASK |
1925                                 GDK_BUTTON1_MOTION_MASK |
1926                                 GDK_BUTTON_RELEASE_MASK,
1927                                 NULL, NULL, event->time))
1928             return FALSE;
1929
1930           gtk_grab_add (widget);
1931           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
1932           column->resized_width = column->width;
1933           column->use_resized_width = TRUE;
1934
1935           /* block attached dnd signal handler */
1936           drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
1937           if (drag_data)
1938             gtk_signal_handler_block_by_data (GTK_OBJECT (widget), drag_data);
1939
1940           if (!GTK_WIDGET_HAS_FOCUS (widget))
1941             gtk_widget_grab_focus (widget);
1942
1943           tree_view->priv->drag_pos = i;
1944           tree_view->priv->x_drag = (column->button->allocation.x + column->button->allocation.width);
1945           break;
1946         }
1947     }
1948   return TRUE;
1949 }
1950
1951 /* GtkWidget::button_release_event helper */
1952 static gboolean
1953 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
1954                                           GdkEventButton *event)
1955 {
1956   GtkTreeView *tree_view;
1957
1958   tree_view = GTK_TREE_VIEW (widget);
1959
1960   gdk_pointer_ungrab (GDK_CURRENT_TIME);
1961   gdk_keyboard_ungrab (GDK_CURRENT_TIME);
1962
1963   /* Move the button back */
1964   g_object_ref (tree_view->priv->drag_column->button);
1965   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
1966   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
1967   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
1968   g_object_unref (tree_view->priv->drag_column->button);
1969   gtk_widget_queue_resize (widget);
1970   if (tree_view->priv->drag_column->resizable)
1971     {
1972       gdk_window_raise (tree_view->priv->drag_column->window);
1973       gdk_window_show (tree_view->priv->drag_column->window);
1974     }
1975   else
1976     gdk_window_hide (tree_view->priv->drag_column->window);
1977
1978   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
1979
1980   if (tree_view->priv->cur_reorder &&
1981       tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
1982     gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
1983                                      tree_view->priv->cur_reorder->left_column);
1984   tree_view->priv->drag_column = NULL;
1985   gdk_window_hide (tree_view->priv->drag_window);
1986
1987   g_list_foreach (tree_view->priv->column_drag_info, (GFunc) g_free, NULL);
1988   g_list_free (tree_view->priv->column_drag_info);
1989   tree_view->priv->column_drag_info = NULL;
1990
1991   gdk_window_hide (tree_view->priv->drag_highlight_window);
1992
1993   /* Reset our flags */
1994   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
1995   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
1996
1997   return TRUE;
1998 }
1999
2000 /* GtkWidget::button_release_event helper */
2001 static gboolean
2002 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2003                                             GdkEventButton *event)
2004 {
2005   GtkTreeView *tree_view;
2006   gpointer drag_data;
2007   gint x;
2008   gint i;
2009
2010   tree_view = GTK_TREE_VIEW (widget);
2011
2012   i = tree_view->priv->drag_pos;
2013   tree_view->priv->drag_pos = -1;
2014
2015       /* unblock attached dnd signal handler */
2016   drag_data = gtk_object_get_data (GTK_OBJECT (widget), "gtk-site-data");
2017   if (drag_data)
2018     gtk_signal_handler_unblock_by_data (GTK_OBJECT (widget), drag_data);
2019
2020   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2021   gtk_widget_get_pointer (widget, &x, NULL);
2022   gtk_grab_remove (widget);
2023   gdk_pointer_ungrab (event->time);
2024
2025   return TRUE;
2026 }
2027
2028 static gboolean
2029 gtk_tree_view_button_release (GtkWidget      *widget,
2030                               GdkEventButton *event)
2031 {
2032   GtkTreeView *tree_view;
2033
2034   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2035   g_return_val_if_fail (event != NULL, FALSE);
2036
2037   tree_view = GTK_TREE_VIEW (widget);
2038
2039   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2040     return gtk_tree_view_button_release_drag_column (widget, event);
2041
2042   if (tree_view->priv->pressed_button == event->button)
2043     tree_view->priv->pressed_button = -1;
2044
2045   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2046     return gtk_tree_view_button_release_column_resize (widget, event);
2047
2048   if (tree_view->priv->button_pressed_node == NULL)
2049     return FALSE;
2050
2051   if (event->button == 1)
2052     {
2053       gtk_grab_remove (widget);
2054       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
2055           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2056         {
2057           GtkTreePath *path = NULL;
2058
2059           path = _gtk_tree_view_find_path (tree_view,
2060                                            tree_view->priv->button_pressed_tree,
2061                                            tree_view->priv->button_pressed_node);
2062           /* Actually activate the node */
2063           if (tree_view->priv->button_pressed_node->children == NULL)
2064             gtk_tree_view_real_expand_row (tree_view, path,
2065                                            tree_view->priv->button_pressed_tree,
2066                                            tree_view->priv->button_pressed_node,
2067                                            FALSE, TRUE);
2068           else
2069             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
2070                                              tree_view->priv->button_pressed_tree,
2071                                              tree_view->priv->button_pressed_node, TRUE);
2072           gtk_tree_path_free (path);
2073         }
2074
2075       tree_view->priv->button_pressed_tree = NULL;
2076       tree_view->priv->button_pressed_node = NULL;
2077     }
2078
2079   return TRUE;
2080 }
2081
2082
2083 /* GtkWidget::motion_event function set.
2084  */
2085
2086 static gboolean
2087 coords_are_over_arrow (GtkTreeView *tree_view,
2088                        GtkRBTree   *tree,
2089                        GtkRBNode   *node,
2090                        /* these are in window coords */
2091                        gint         x,
2092                        gint         y)
2093 {
2094   GdkRectangle arrow;
2095   gint x2;
2096
2097   if (!GTK_WIDGET_REALIZED (tree_view))
2098     return FALSE;
2099
2100   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
2101     return FALSE;
2102
2103   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
2104
2105   arrow.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2106
2107   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
2108
2109   arrow.width = x2 - arrow.x;
2110
2111   return (x >= arrow.x &&
2112           x < (arrow.x + arrow.width) &&
2113           y >= arrow.y &&
2114           y < (arrow.y + arrow.height));
2115 }
2116
2117 static void
2118 do_unprelight (GtkTreeView *tree_view,
2119                /* these are in tree window coords */
2120                gint x,
2121                gint y)
2122 {
2123   if (tree_view->priv->prelight_node == NULL)
2124     return;
2125
2126   GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node, GTK_RBNODE_IS_PRELIT);
2127
2128   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2129       !coords_are_over_arrow (tree_view,
2130                               tree_view->priv->prelight_tree,
2131                               tree_view->priv->prelight_node,
2132                               x,
2133                               y))
2134     /* We need to unprelight the old arrow. */
2135     {
2136       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2137
2138       gtk_tree_view_draw_arrow (tree_view,
2139                                 tree_view->priv->prelight_tree,
2140                                 tree_view->priv->prelight_node,
2141                                 x,
2142                                 y);
2143
2144     }
2145
2146   tree_view->priv->prelight_node = NULL;
2147   tree_view->priv->prelight_tree = NULL;
2148 }
2149
2150 static void
2151 do_prelight (GtkTreeView *tree_view,
2152              GtkRBTree   *tree,
2153              GtkRBNode   *node,
2154              /* these are in tree_window coords */
2155              gint         x,
2156              gint         y)
2157 {
2158   if (coords_are_over_arrow (tree_view, tree, node, x, y))
2159     {
2160       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2161     }
2162
2163   tree_view->priv->prelight_node = node;
2164   tree_view->priv->prelight_tree = tree;
2165
2166   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
2167 }
2168
2169 static void
2170 ensure_unprelighted (GtkTreeView *tree_view)
2171 {
2172   do_unprelight (tree_view, -1000, -1000); /* coords not possibly over an arrow */
2173   g_assert (tree_view->priv->prelight_node == NULL);
2174 }
2175
2176
2177
2178
2179 /* Our motion arrow is either a box (in the case of the original spot)
2180  * or an arrow.  It is expander_size wide.
2181  */
2182 /*
2183  * 11111111111111
2184  * 01111111111110
2185  * 00111111111100
2186  * 00011111111000
2187  * 00001111110000
2188  * 00000111100000
2189  * 00000111100000
2190  * 00000111100000
2191  * ~ ~ ~ ~ ~ ~ ~
2192  * 00000111100000
2193  * 00000111100000
2194  * 00000111100000
2195  * 00001111110000
2196  * 00011111111000
2197  * 00111111111100
2198  * 01111111111110
2199  * 11111111111111
2200  */
2201
2202 static void
2203 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
2204 {
2205   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
2206   GtkWidget *widget = GTK_WIDGET (tree_view);
2207   GdkBitmap *mask = NULL;
2208   gint x;
2209   gint y;
2210   gint width;
2211   gint height;
2212   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
2213   GdkWindowAttr attributes;
2214   guint attributes_mask;
2215
2216   if (!reorder ||
2217       reorder->left_column == tree_view->priv->drag_column ||
2218       reorder->right_column == tree_view->priv->drag_column)
2219     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2220   else if (reorder->left_column || reorder->right_column)
2221     {
2222       GdkRectangle visible_rect;
2223       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2224       if (reorder->left_column)
2225         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
2226       else
2227         x = reorder->right_column->button->allocation.x;
2228
2229       if (x < visible_rect.x)
2230         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
2231       else if (x > visible_rect.x + visible_rect.width)
2232         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
2233       else
2234         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
2235     }
2236
2237   /* We want to draw the rectangle over the initial location. */
2238   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2239     {
2240       GdkGC *gc;
2241       GdkColor col;
2242
2243       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
2244         {
2245
2246           if (tree_view->priv->drag_highlight_window)
2247             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2248
2249           attributes.window_type = GDK_WINDOW_CHILD;
2250           attributes.wclass = GDK_INPUT_OUTPUT;
2251           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2252           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2253           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2254           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2255           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
2256           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2257
2258           width = tree_view->priv->drag_column->button->allocation.width;
2259           height = tree_view->priv->drag_column->button->allocation.height;
2260           gdk_window_move_resize (tree_view->priv->drag_highlight_window,
2261                                   tree_view->priv->drag_column_x, 0, width, height);
2262
2263           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2264           gc = gdk_gc_new (mask);
2265           col.pixel = 1;
2266           gdk_gc_set_foreground (gc, &col);
2267           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2268           col.pixel = 0;
2269           gdk_gc_set_foreground(gc, &col);
2270           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
2271           gdk_gc_destroy (gc);
2272
2273           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2274                                          mask, 0, 0);
2275           if (mask) gdk_pixmap_unref (mask);
2276           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
2277         }
2278     }
2279   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
2280     {
2281       gint i, j = 1;
2282       GdkGC *gc;
2283       GdkColor col;
2284
2285       width = tree_view->priv->expander_size;
2286
2287       /* Get x, y, width, height of arrow */
2288       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
2289       if (reorder->left_column)
2290         {
2291           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
2292           height = reorder->left_column->button->allocation.height;
2293         }
2294       else
2295         {
2296           x += reorder->right_column->button->allocation.x - width/2;
2297           height = reorder->right_column->button->allocation.height;
2298         }
2299       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
2300       height += tree_view->priv->expander_size;
2301
2302       /* Create the new window */
2303       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
2304         {
2305           if (tree_view->priv->drag_highlight_window)
2306             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2307
2308           attributes.window_type = GDK_WINDOW_TEMP;
2309           attributes.wclass = GDK_INPUT_OUTPUT;
2310           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2311           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2312           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2313           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2314           attributes.width = width;
2315           attributes.height = height;
2316           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2317           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2318
2319           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2320           gc = gdk_gc_new (mask);
2321           col.pixel = 1;
2322           gdk_gc_set_foreground (gc, &col);
2323           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2324
2325           /* Draw the 2 arrows as per above */
2326           col.pixel = 0;
2327           gdk_gc_set_foreground (gc, &col);
2328           for (i = 0; i < width; i ++)
2329             {
2330               if (i == (width/2 - 1))
2331                 continue;
2332               gdk_draw_line (mask, gc, i, j, i, height - j);
2333               if (i < (width/2 - 1))
2334                 j++;
2335               else
2336                 j--;
2337             }
2338           gdk_gc_destroy (gc);
2339           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2340                                          mask, 0, 0);
2341           if (mask) gdk_pixmap_unref (mask);
2342         }
2343
2344       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
2345       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2346     }
2347   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
2348            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2349     {
2350       gint i, j = 1;
2351       GdkGC *gc;
2352       GdkColor col;
2353
2354       width = tree_view->priv->expander_size;
2355
2356       /* Get x, y, width, height of arrow */
2357       width = width/2; /* remember, the arrow only takes half the available width */
2358       gdk_window_get_origin (widget->window, &x, &y);
2359       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2360         x += widget->allocation.width - width;
2361
2362       if (reorder->left_column)
2363         height = reorder->left_column->button->allocation.height;
2364       else
2365         height = reorder->right_column->button->allocation.height;
2366
2367       y -= tree_view->priv->expander_size;
2368       height += 2*tree_view->priv->expander_size;
2369
2370       /* Create the new window */
2371       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
2372           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
2373         {
2374           if (tree_view->priv->drag_highlight_window)
2375             gdk_window_destroy (tree_view->priv->drag_highlight_window);
2376
2377           attributes.window_type = GDK_WINDOW_TEMP;
2378           attributes.wclass = GDK_INPUT_OUTPUT;
2379           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
2380           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
2381           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
2382           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
2383           attributes.width = width;
2384           attributes.height = height;
2385           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
2386           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
2387
2388           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
2389           gc = gdk_gc_new (mask);
2390           col.pixel = 1;
2391           gdk_gc_set_foreground (gc, &col);
2392           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
2393
2394           /* Draw the 2 arrows as per above */
2395           col.pixel = 0;
2396           gdk_gc_set_foreground (gc, &col);
2397           j = tree_view->priv->expander_size;
2398           for (i = 0; i < width; i ++)
2399             {
2400               gint k;
2401               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
2402                 k = width - i - 1;
2403               else
2404                 k = i;
2405               gdk_draw_line (mask, gc, k, j, k, height - j);
2406               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
2407               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
2408               j--;
2409             }
2410           gdk_gc_destroy (gc);
2411           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
2412                                          mask, 0, 0);
2413           if (mask) gdk_pixmap_unref (mask);
2414         }
2415
2416       tree_view->priv->drag_column_window_state = arrow_type;
2417       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
2418    }
2419   else
2420     {
2421       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
2422       gdk_window_hide (tree_view->priv->drag_highlight_window);
2423       return;
2424     }
2425
2426   gdk_window_show (tree_view->priv->drag_highlight_window);
2427   gdk_window_raise (tree_view->priv->drag_highlight_window);
2428 }
2429
2430 static gboolean
2431 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
2432                                     GdkEventMotion *event)
2433 {
2434   gint x;
2435   gint new_width;
2436   GtkTreeViewColumn *column;
2437   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2438
2439   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
2440
2441   if (event->is_hint || event->window != widget->window)
2442     gtk_widget_get_pointer (widget, &x, NULL);
2443   else
2444     x = event->x;
2445
2446   if (tree_view->priv->hadjustment)
2447     x += tree_view->priv->hadjustment->value;
2448
2449   new_width = gtk_tree_view_new_column_width (tree_view,
2450                                               tree_view->priv->drag_pos, &x);
2451   if (x != tree_view->priv->x_drag &&
2452       (new_width != column->fixed_width));
2453     {
2454       column->resized_width = new_width;
2455       gtk_widget_queue_resize (widget);
2456     }
2457
2458   return FALSE;
2459 }
2460
2461
2462 static void
2463 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
2464 {
2465   GtkTreeViewColumnReorder *reorder = NULL;
2466   GList *list;
2467   gint mouse_x;
2468
2469   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
2470
2471   for (list = tree_view->priv->column_drag_info; list; list = list->next)
2472     {
2473       reorder = (GtkTreeViewColumnReorder *) list->data;
2474       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
2475         break;
2476       reorder = NULL;
2477     }
2478
2479   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
2480       return;*/
2481
2482   tree_view->priv->cur_reorder = reorder;
2483   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
2484 }
2485
2486 static void
2487 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
2488 {
2489   GdkRectangle visible_rect;
2490   gint y;
2491   gint offset;
2492   gfloat value;
2493
2494   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
2495   y += tree_view->priv->dy;
2496
2497   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2498
2499   /* see if we are near the edge. */
2500   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
2501   if (offset > 0)
2502     {
2503       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
2504       if (offset < 0)
2505         return;
2506     }
2507
2508   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
2509                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
2510   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
2511 }
2512
2513 static gboolean
2514 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
2515 {
2516   GdkRectangle visible_rect;
2517   gint x;
2518   gint offset;
2519   gfloat value;
2520
2521   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
2522
2523   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
2524
2525   /* See if we are near the edge. */
2526   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
2527   if (offset > 0)
2528     {
2529       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
2530       if (offset < 0)
2531         return TRUE;
2532     }
2533   offset = offset/3;
2534
2535   value = CLAMP (tree_view->priv->hadjustment->value + offset,
2536                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
2537   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
2538
2539   return TRUE;
2540
2541 }
2542
2543 static gboolean
2544 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
2545                                   GdkEventMotion *event)
2546 {
2547   GtkTreeView *tree_view = (GtkTreeView *) widget;
2548   GtkTreeViewColumn *column = tree_view->priv->drag_column;
2549   gint x, y;
2550
2551   /* Sanity Check */
2552   if ((column == NULL) ||
2553       (event->window != tree_view->priv->drag_window))
2554     return FALSE;
2555
2556   /* Handle moving the header */
2557   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
2558   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
2559              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
2560   gdk_window_move (tree_view->priv->drag_window, x, y);
2561
2562   /* autoscroll, if needed */
2563   gtk_tree_view_horizontal_autoscroll (tree_view);
2564   /* Update the current reorder position and arrow; */
2565   gtk_tree_view_update_current_reorder (tree_view);
2566
2567   return TRUE;
2568 }
2569
2570 static gboolean
2571 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
2572                                  GdkEventMotion *event)
2573 {
2574   GtkTreeView *tree_view;
2575   GtkRBTree *tree;
2576   GtkRBNode *node;
2577   gint new_y;
2578   GtkRBTree *old_prelight_tree;
2579   GtkRBNode *old_prelight_node;
2580   gboolean old_arrow_prelit;
2581
2582   tree_view = (GtkTreeView *) widget;
2583
2584   if (tree_view->priv->tree == NULL)
2585     return FALSE;
2586
2587   gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
2588
2589   old_prelight_tree = tree_view->priv->prelight_tree;
2590   old_prelight_node = tree_view->priv->prelight_node;
2591   old_arrow_prelit = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
2592
2593   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2594   if (new_y < 0)
2595     new_y = 0;
2596   do_unprelight (tree_view, event->x, event->y);
2597   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2598
2599   if (tree == NULL)
2600     return TRUE;
2601
2602   /* If we are currently pressing down a button, we don't want to prelight anything else. */
2603   if ((tree_view->priv->button_pressed_node != NULL) &&
2604       (tree_view->priv->button_pressed_node != node))
2605     return TRUE;
2606
2607
2608   do_prelight (tree_view, tree, node, event->x, event->y);
2609
2610   if (old_prelight_node != tree_view->priv->prelight_node)
2611     {
2612       if (old_prelight_node)
2613         {
2614           _gtk_tree_view_queue_draw_node (tree_view,
2615                                           old_prelight_tree,
2616                                           old_prelight_node,
2617                                           NULL);
2618         }
2619       if (tree_view->priv->prelight_node)
2620         {
2621           _gtk_tree_view_queue_draw_node (tree_view,
2622                                           tree_view->priv->prelight_tree,
2623                                           tree_view->priv->prelight_node,
2624                                           NULL);
2625         }
2626     }
2627   else if (old_arrow_prelit != GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
2628     {
2629       if (tree_view->priv->prelight_node)
2630         {
2631           _gtk_tree_view_queue_draw_node (tree_view,
2632                                          tree_view->priv->prelight_tree,
2633                                          tree_view->priv->prelight_node,
2634                                          NULL);
2635         }
2636     }
2637   return TRUE;
2638 }
2639
2640 static gboolean
2641 gtk_tree_view_motion (GtkWidget      *widget,
2642                       GdkEventMotion *event)
2643 {
2644   GtkTreeView *tree_view;
2645
2646   tree_view = (GtkTreeView *) widget;
2647
2648   /* Resizing a column */
2649   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
2650     return gtk_tree_view_motion_resize_column (widget, event);
2651
2652   /* Drag column */
2653   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2654     return gtk_tree_view_motion_drag_column (widget, event);
2655
2656   /* Sanity check it */
2657   if (event->window == tree_view->priv->bin_window)
2658     return gtk_tree_view_motion_bin_window (widget, event);
2659
2660   return FALSE;
2661 }
2662
2663 /* Warning: Very scary function.
2664  * Modify at your own risk
2665  *
2666  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
2667  * FIXME: It's not...
2668  */
2669 static gboolean
2670 gtk_tree_view_bin_expose (GtkWidget      *widget,
2671                           GdkEventExpose *event)
2672 {
2673   GtkTreeView *tree_view;
2674   GtkTreePath *path;
2675   GtkRBTree *tree;
2676   GList *list;
2677   GtkRBNode *node;
2678   GtkRBNode *cursor = NULL;
2679   GtkRBTree *cursor_tree = NULL;
2680   GtkRBNode *drag_highlight = NULL;
2681   GtkRBTree *drag_highlight_tree = NULL;
2682   GtkTreeIter iter;
2683   gint new_y;
2684   gint y_offset, x_offset, cell_offset;
2685   gint max_height;
2686   gint depth;
2687   GdkRectangle background_area;
2688   GdkRectangle cell_area;
2689   guint flags;
2690   gint highlight_x;
2691   gint bin_window_width;
2692   GtkTreePath *cursor_path;
2693   GtkTreePath *drag_dest_path;
2694   GList *last_column;
2695   gint vertical_separator;
2696   gint horizontal_separator;
2697   gboolean allow_rules;
2698
2699   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
2700
2701   tree_view = GTK_TREE_VIEW (widget);
2702
2703   gtk_widget_style_get (widget,
2704                         "horizontal_separator", &horizontal_separator,
2705                         "vertical_separator", &vertical_separator,
2706                         "allow_rules", &allow_rules,
2707                         NULL);
2708
2709   if (tree_view->priv->tree == NULL)
2710     return TRUE;
2711
2712   /* clip event->area to the visible area */
2713   if (event->area.height < 0)
2714     return TRUE;
2715
2716   validate_visible_area (tree_view);
2717
2718   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
2719
2720   if (new_y < 0)
2721     new_y = 0;
2722   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2723
2724   if (node == NULL)
2725     return TRUE;
2726
2727   /* find the path for the node */
2728   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
2729                                    tree,
2730                                    node);
2731   gtk_tree_model_get_iter (tree_view->priv->model,
2732                            &iter,
2733                            path);
2734   depth = gtk_tree_path_get_depth (path);
2735   gtk_tree_path_free (path);
2736
2737   cursor_path = NULL;
2738   drag_dest_path = NULL;
2739
2740   if (tree_view->priv->cursor)
2741     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
2742
2743   if (cursor_path)
2744     _gtk_tree_view_find_node (tree_view, cursor_path,
2745                               &cursor_tree, &cursor);
2746
2747   if (tree_view->priv->drag_dest_row)
2748     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
2749
2750   if (drag_dest_path)
2751     _gtk_tree_view_find_node (tree_view, drag_dest_path,
2752                               &drag_highlight_tree, &drag_highlight);
2753
2754   gdk_drawable_get_size (tree_view->priv->bin_window,
2755                          &bin_window_width, NULL);
2756
2757   for (last_column = g_list_last (tree_view->priv->columns);
2758        last_column &&
2759          !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible) &&
2760          GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button);
2761        last_column = last_column->prev)
2762     ;
2763
2764   /* Actually process the expose event.  To do this, we want to
2765    * start at the first node of the event, and walk the tree in
2766    * order, drawing each successive node.
2767    */
2768
2769   do
2770     {
2771       gboolean parity;
2772
2773       max_height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
2774
2775       x_offset = -event->area.x;
2776       cell_offset = 0;
2777       highlight_x = 0; /* should match x coord of first cell */
2778
2779       background_area.y = y_offset + event->area.y;
2780       background_area.height = max_height;
2781
2782       flags = 0;
2783
2784       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
2785         flags |= GTK_CELL_RENDERER_PRELIT;
2786
2787       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
2788         flags |= GTK_CELL_RENDERER_SELECTED;
2789
2790       parity = _gtk_rbtree_node_find_parity (tree, node);
2791
2792       for (list = tree_view->priv->columns; list; list = list->next)
2793         {
2794           GtkTreeViewColumn *column = list->data;
2795           const gchar *detail = NULL;
2796           GtkStateType state;
2797
2798           if (!column->visible)
2799             continue;
2800
2801           if (cell_offset > event->area.x + event->area.width ||
2802               cell_offset + column->width < event->area.x)
2803             {
2804               cell_offset += column->width;
2805               continue;
2806             }
2807
2808           if (column->show_sort_indicator)
2809             flags |= GTK_CELL_RENDERER_SORTED;
2810           else
2811             flags &= ~GTK_CELL_RENDERER_SORTED;
2812
2813           gtk_tree_view_column_cell_set_cell_data (column,
2814                                                    tree_view->priv->model,
2815                                                    &iter,
2816                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2817                                                    node->children?TRUE:FALSE);
2818
2819
2820           background_area.x = cell_offset;
2821           background_area.width = column->width;
2822
2823           cell_area = background_area;
2824           cell_area.y += vertical_separator / 2;
2825           cell_area.x += horizontal_separator / 2;
2826           cell_area.height -= vertical_separator;
2827           cell_area.width -= horizontal_separator;
2828
2829           /* Select the detail for drawing the cell.  relevant
2830            * factors are parity, sortedness, and whether to
2831            * display rules.
2832            */
2833           if (allow_rules && tree_view->priv->has_rules)
2834             {
2835               if (flags & GTK_CELL_RENDERER_SORTED)
2836                 {
2837                   if (parity)
2838                     detail = "cell_odd_ruled_sorted";
2839                   else
2840                     detail = "cell_even_ruled_sorted";
2841                 }
2842               else
2843                 {
2844                   if (parity)
2845                     detail = "cell_odd_ruled";
2846                   else
2847                     detail = "cell_even_ruled";
2848                 }
2849             }
2850           else
2851             {
2852               if (flags & GTK_CELL_RENDERER_SORTED)
2853                 {
2854                   if (parity)
2855                     detail = "cell_odd_sorted";
2856                   else
2857                     detail = "cell_even_sorted";
2858                 }
2859               else
2860                 {
2861                   if (parity)
2862                     detail = "cell_odd";
2863                   else
2864                     detail = "cell_even";
2865                 }
2866             }
2867
2868           g_assert (detail);
2869
2870           if (flags & GTK_CELL_RENDERER_SELECTED)
2871             state = GTK_STATE_SELECTED;
2872           else
2873             state = GTK_STATE_NORMAL;
2874
2875           /* Draw background */
2876           gtk_paint_flat_box (widget->style,
2877                               event->window,
2878                               state,
2879                               GTK_SHADOW_NONE,
2880                               &event->area,
2881                               widget,
2882                               detail,
2883                               background_area.x,
2884                               background_area.y,
2885                               background_area.width,
2886                               background_area.height);
2887
2888           if (gtk_tree_view_is_expander_column (tree_view, column) &&
2889               TREE_VIEW_DRAW_EXPANDERS(tree_view))
2890             {
2891               cell_area.x += depth * tree_view->priv->expander_size;
2892               cell_area.width -= depth * tree_view->priv->expander_size;
2893
2894               /* If we have an expander column, the highlight underline
2895                * starts with that column, so that it indicates which
2896                * level of the tree we're dropping at.
2897                */
2898               highlight_x = cell_area.x;
2899               _gtk_tree_view_column_cell_render (column,
2900                                                  event->window,
2901                                                  &background_area,
2902                                                  &cell_area,
2903                                                  &event->area,
2904                                                  flags);
2905               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
2906                 {
2907                   gint x, y;
2908                   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, 0);
2909                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2910                                             tree,
2911                                             node,
2912                                             x, y);
2913                 }
2914             }
2915           else
2916             {
2917               _gtk_tree_view_column_cell_render (column,
2918                                                  event->window,
2919                                                  &background_area,
2920                                                  &cell_area,
2921                                                  &event->area,
2922                                                  flags);
2923             }
2924           if (node == cursor &&
2925               ((column == tree_view->priv->focus_column &&
2926                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
2927                 GTK_WIDGET_HAS_FOCUS (widget)) ||
2928                (column == tree_view->priv->edited_column)))
2929             {
2930               _gtk_tree_view_column_cell_draw_focus (column,
2931                                                      event->window,
2932                                                      &background_area,
2933                                                      &cell_area,
2934                                                      &event->area,
2935                                                      flags);
2936             }
2937           cell_offset += column->width;
2938         }
2939
2940
2941       if (node == drag_highlight)
2942         {
2943           /* Draw indicator for the drop
2944            */
2945           gint highlight_y = -1;
2946           GtkRBTree *tree = NULL;
2947           GtkRBNode *node = NULL;
2948           gint width;
2949           gint focus_line_width;
2950
2951           switch (tree_view->priv->drag_dest_pos)
2952             {
2953             case GTK_TREE_VIEW_DROP_BEFORE:
2954               highlight_y = background_area.y - 1;
2955               if (highlight_y < 0)
2956                       highlight_y = 0;
2957               break;
2958
2959             case GTK_TREE_VIEW_DROP_AFTER:
2960               highlight_y = background_area.y + background_area.height - 1;
2961               break;
2962
2963             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
2964             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
2965               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
2966
2967               if (tree == NULL)
2968                 break;
2969               gdk_drawable_get_size (tree_view->priv->bin_window,
2970                                      &width, NULL);
2971               gtk_widget_style_get (widget, "focus-line-width", &focus_line_width, NULL);
2972               gtk_paint_focus (widget->style,
2973                                tree_view->priv->bin_window,
2974                                GTK_WIDGET_STATE (widget),
2975                                NULL,
2976                                widget,
2977                                "treeview-drop-indicator",
2978                                0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
2979                                - focus_line_width / 2,
2980                                width, MAX(BACKGROUND_HEIGHT (node),
2981                                           tree_view->priv->expander_size)
2982                                - focus_line_width + 1);
2983               break;
2984             }
2985
2986           if (highlight_y >= 0)
2987             {
2988               gdk_draw_line (event->window,
2989                              widget->style->black_gc,
2990                              highlight_x,
2991                              highlight_y,
2992                              bin_window_width - highlight_x,
2993                              highlight_y);
2994             }
2995         }
2996
2997       y_offset += max_height;
2998       if (node->children)
2999         {
3000           GtkTreeIter parent = iter;
3001           gboolean has_child;
3002
3003           tree = node->children;
3004           node = tree->root;
3005
3006           g_assert (node != tree->nil);
3007
3008           while (node->left != tree->nil)
3009             node = node->left;
3010           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3011                                                     &iter,
3012                                                     &parent);
3013           depth++;
3014
3015           /* Sanity Check! */
3016           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
3017         }
3018       else
3019         {
3020           gboolean done = FALSE;
3021           do
3022             {
3023               node = _gtk_rbtree_next (tree, node);
3024               if (node != NULL)
3025                 {
3026                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3027                   done = TRUE;
3028
3029                   /* Sanity Check! */
3030                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
3031                 }
3032               else
3033                 {
3034                   GtkTreeIter parent_iter = iter;
3035                   gboolean has_parent;
3036
3037                   node = tree->parent_node;
3038                   tree = tree->parent_tree;
3039                   if (tree == NULL)
3040                     /* we should go to done to free some memory */
3041                     goto done;
3042                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3043                                                            &iter,
3044                                                            &parent_iter);
3045                   depth--;
3046
3047                   /* Sanity check */
3048                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
3049                 }
3050             }
3051           while (!done);
3052         }
3053     }
3054   while (y_offset < event->area.height);
3055
3056  done:
3057   if (cursor_path)
3058     gtk_tree_path_free (cursor_path);
3059
3060   if (drag_dest_path)
3061     gtk_tree_path_free (drag_dest_path);
3062
3063   return FALSE;
3064 }
3065
3066 static gboolean
3067 gtk_tree_view_expose (GtkWidget      *widget,
3068                       GdkEventExpose *event)
3069 {
3070   GtkTreeView *tree_view;
3071
3072   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3073
3074   tree_view = GTK_TREE_VIEW (widget);
3075
3076   if (event->window == tree_view->priv->bin_window)
3077     return gtk_tree_view_bin_expose (widget, event);
3078   else if (event->window == tree_view->priv->header_window)
3079     {
3080       GList *list;
3081
3082       for (list = tree_view->priv->columns; list != NULL; list = list->next)
3083         {
3084           GtkTreeViewColumn *column = list->data;
3085
3086           if (column == tree_view->priv->drag_column)
3087             continue;
3088
3089           if (column->visible)
3090             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3091                                             column->button,
3092                                             event);
3093         }
3094     }
3095   else if (event->window == tree_view->priv->drag_window)
3096     {
3097       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
3098                                       tree_view->priv->drag_column->button,
3099                                       event);
3100     }
3101   return TRUE;
3102 }
3103
3104 enum
3105 {
3106   DROP_HOME,
3107   DROP_RIGHT,
3108   DROP_LEFT,
3109   DROP_END
3110 };
3111
3112 /* returns 0x1 when no column has been found -- yes it's hackish */
3113 static GtkTreeViewColumn *
3114 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
3115                                GtkTreeViewColumn *column,
3116                                gint               drop_position)
3117 {
3118   GtkTreeViewColumn *left_column = NULL;
3119   GtkTreeViewColumn *cur_column = NULL;
3120   GList *tmp_list;
3121
3122   if (!column->reorderable)
3123     return (GtkTreeViewColumn *)0x1;
3124
3125   switch (drop_position)
3126     {
3127       case DROP_HOME:
3128         /* find first column where we can drop */
3129         tmp_list = tree_view->priv->columns;
3130         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3131           return (GtkTreeViewColumn *)0x1;
3132
3133         while (tmp_list)
3134           {
3135             g_assert (tmp_list);
3136
3137             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3138             tmp_list = tmp_list->next;
3139
3140             if (left_column && left_column->visible == FALSE)
3141               continue;
3142
3143             if (!tree_view->priv->column_drop_func)
3144               return left_column;
3145
3146             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3147               {
3148                 left_column = cur_column;
3149                 continue;
3150               }
3151
3152             return cur_column;
3153           }
3154
3155         if (!tree_view->priv->column_drop_func)
3156           return left_column;
3157
3158         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3159           return left_column;
3160         else
3161           return (GtkTreeViewColumn *)0x1;
3162         break;
3163
3164       case DROP_RIGHT:
3165         /* find first column after column where we can drop */
3166         tmp_list = tree_view->priv->columns;
3167
3168         for (; tmp_list; tmp_list = tmp_list->next)
3169           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3170             break;
3171
3172         if (!tmp_list || !tmp_list->next)
3173           return (GtkTreeViewColumn *)0x1;
3174
3175         tmp_list = tmp_list->next;
3176         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3177         tmp_list = tmp_list->next;
3178
3179         while (tmp_list)
3180           {
3181             g_assert (tmp_list);
3182
3183             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3184             tmp_list = tmp_list->next;
3185
3186             if (left_column && left_column->visible == FALSE)
3187               {
3188                 left_column = cur_column;
3189                 if (tmp_list)
3190                   tmp_list = tmp_list->next;
3191                 continue;
3192               }
3193
3194             if (!tree_view->priv->column_drop_func)
3195               return left_column;
3196
3197             if (!(*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3198               {
3199                 left_column = cur_column;
3200                 continue;
3201               }
3202
3203             return cur_column;
3204           }
3205
3206         if (!tree_view->priv->column_drop_func)
3207           return left_column;
3208
3209         if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
3210           return left_column;
3211         else
3212           return (GtkTreeViewColumn *)0x1;
3213         break;
3214
3215       case DROP_LEFT:
3216         /* find first column before column where we can drop */
3217         tmp_list = tree_view->priv->columns;
3218
3219         for (; tmp_list; tmp_list = tmp_list->next)
3220           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
3221             break;
3222
3223         if (!tmp_list || !tmp_list->prev)
3224           return (GtkTreeViewColumn *)0x1;
3225
3226         tmp_list = tmp_list->prev;
3227         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3228         tmp_list = tmp_list->prev;
3229
3230         while (tmp_list)
3231           {
3232             g_assert (tmp_list);
3233
3234             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3235
3236             if (left_column && !left_column->visible)
3237               {
3238                 /*if (!tmp_list->prev)
3239                   return (GtkTreeViewColumn *)0x1;
3240                   */
3241 /*
3242                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
3243                 tmp_list = tmp_list->prev->prev;
3244                 continue;*/
3245
3246                 cur_column = left_column;
3247                 if (tmp_list)
3248                   tmp_list = tmp_list->prev;
3249                 continue;
3250               }
3251
3252             if (!tree_view->priv->column_drop_func)
3253               return left_column;
3254
3255             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3256               return left_column;
3257
3258             cur_column = left_column;
3259             tmp_list = tmp_list->prev;
3260           }
3261
3262         if (!tree_view->priv->column_drop_func)
3263           return NULL;
3264
3265         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3266           return NULL;
3267         else
3268           return (GtkTreeViewColumn *)0x1;
3269         break;
3270
3271       case DROP_END:
3272         /* same as DROP_HOME case, but doing it backwards */
3273         tmp_list = g_list_last (tree_view->priv->columns);
3274         cur_column = NULL;
3275
3276         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
3277           return (GtkTreeViewColumn *)0x1;
3278
3279         while (tmp_list)
3280           {
3281             g_assert (tmp_list);
3282
3283             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
3284
3285             if (left_column && !left_column->visible)
3286               {
3287                 cur_column = left_column;
3288                 tmp_list = tmp_list->prev;
3289               }
3290
3291             if (!tree_view->priv->column_drop_func)
3292               return left_column;
3293
3294             if ((*tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
3295               return left_column;
3296
3297             cur_column = left_column;
3298             tmp_list = tmp_list->prev;
3299           }
3300
3301         if (!tree_view->priv->column_drop_func)
3302           return NULL;
3303
3304         if ((*tree_view->priv->column_drop_func) (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
3305           return NULL;
3306         else
3307           return (GtkTreeViewColumn *)0x1;
3308         break;
3309     }
3310
3311   return (GtkTreeViewColumn *)0x1;
3312 }
3313
3314 static gboolean
3315 gtk_tree_view_key_press (GtkWidget   *widget,
3316                          GdkEventKey *event)
3317 {
3318   GtkTreeView *tree_view = (GtkTreeView *) widget;
3319   GList *list;
3320
3321   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3322     {
3323       if (event->keyval == GDK_Escape)
3324         {
3325           tree_view->priv->cur_reorder = NULL;
3326           gtk_tree_view_button_release_drag_column (widget, NULL);
3327         }
3328       return TRUE;
3329     }
3330
3331   /* FIXME: this is prolly broken when we go bidi */
3332   if (tree_view->priv->columns && (event->state & GDK_SHIFT_MASK)
3333       && (event->keyval == GDK_Left || event->keyval == GDK_Right))
3334     {
3335       list = tree_view->priv->columns;
3336       while (list)
3337         {
3338           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3339           if (GTK_WIDGET_HAS_FOCUS (column->button))
3340             {
3341               if (!column->resizable)
3342                 return TRUE;
3343
3344               if (event->keyval == GDK_Left)
3345                 {
3346                   column->resized_width = MAX (column->resized_width,
3347                                                column->width);
3348                   column->resized_width -= 2;
3349                   if (column->resized_width < 0)
3350                     column->resized_width = 0;
3351
3352                   if (column->min_width == -1)
3353                     column->resized_width = MAX (column->button->requisition.width, column->resized_width);
3354                   else
3355                     column->resized_width = MAX (column->min_width, column->resized_width);
3356
3357                   if (column->max_width != -1)
3358                     column->resized_width = MIN (column->resized_width, column->max_width);
3359
3360                   column->use_resized_width = TRUE;
3361                   gtk_widget_queue_resize (widget);
3362                   return TRUE;
3363                 }
3364               else if (event->keyval == GDK_Right)
3365                 {
3366                   column->resized_width = MAX (column->resized_width,
3367                                                column->width);
3368                   column->resized_width += 2;
3369
3370                   if (column->max_width != -1)
3371                     column->resized_width = MIN (column->resized_width, column->max_width);
3372
3373                   column->use_resized_width = TRUE;
3374                   gtk_widget_queue_resize (widget);
3375                   return TRUE;
3376                 }
3377             }
3378           list = list->next;
3379         }
3380     }
3381
3382   /* FIXME: broken when we go bidi? */
3383   if (tree_view->priv->columns && (event->state & GDK_CONTROL_MASK) &&
3384       (event->keyval == GDK_Left || event->keyval == GDK_Right
3385        || event->keyval == GDK_Home || event->keyval == GDK_End))
3386     {
3387       list = tree_view->priv->columns;
3388       while (list)
3389         {
3390           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3391           if (GTK_WIDGET_HAS_FOCUS (column->button))
3392             {
3393               if (event->keyval == GDK_Left)
3394                 {
3395                   GtkTreeViewColumn *col;
3396                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
3397                   if (col != (GtkTreeViewColumn *)0x1)
3398                     gtk_tree_view_move_column_after (tree_view, column, col);
3399                   return TRUE;
3400                 }
3401               else if (event->keyval == GDK_Right)
3402                 {
3403                   GtkTreeViewColumn *col;
3404                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
3405                   if (col != (GtkTreeViewColumn *)0x1)
3406                     gtk_tree_view_move_column_after (tree_view, column, col);
3407                   return TRUE;
3408                 }
3409               else if (event->keyval == GDK_Home)
3410                 {
3411                   GtkTreeViewColumn *col;
3412                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
3413                   if (col != (GtkTreeViewColumn *)0x1)
3414                     gtk_tree_view_move_column_after (tree_view, column, col);
3415                   return TRUE;
3416                 }
3417               else if (event->keyval == GDK_End)
3418                 {
3419                   GtkTreeViewColumn *col;
3420                   col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
3421                   if (col != (GtkTreeViewColumn *)0x1)
3422                     gtk_tree_view_move_column_after (tree_view, column, col);
3423                   return TRUE;
3424                 }
3425             }
3426           list = list->next;
3427         }
3428     }
3429
3430   /* FIXME: this is prolly broken when we go bidi */
3431   if (tree_view->priv->columns &&
3432       (event->keyval == GDK_Left || event->keyval == GDK_Right))
3433     {
3434       gint width = 0;
3435       list = tree_view->priv->columns;
3436       while (list)
3437         {
3438           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (list->data);
3439           if (GTK_WIDGET_HAS_FOCUS (column->button))
3440             {
3441               if (event->keyval == GDK_Left && list->prev)
3442                 {
3443                   GList *tmp;
3444
3445                   for (tmp = list->prev; tmp; tmp = tmp->prev)
3446                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3447                       break;
3448
3449                   if (!tmp)
3450                     return FALSE;
3451
3452                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3453                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3454                   width -= tree_view->priv->focus_column->width;
3455                   gtk_adjustment_set_value (tree_view->priv->hadjustment, CLAMP (width, tree_view->priv->hadjustment->lower, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size));
3456                   return TRUE;
3457                 }
3458               else if (event->keyval == GDK_Right && list->next)
3459                 {
3460                   GList *tmp;
3461
3462                   for (tmp = list->next; tmp; tmp = tmp->next)
3463                     if (GTK_TREE_VIEW_COLUMN (tmp->data)->visible)
3464                       break;
3465
3466                   if (!tmp)
3467                     return FALSE;
3468
3469                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp->data);
3470
3471                   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
3472                   width += tree_view->priv->focus_column->width;
3473                   gtk_adjustment_set_value (tree_view->priv->hadjustment, CLAMP (width, tree_view->priv->hadjustment->lower, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size));
3474                   return TRUE;
3475                 }
3476             }
3477           width += GTK_TREE_VIEW_COLUMN (list->data)->width;
3478           list = list->next;
3479         }
3480     }
3481
3482   return (* GTK_WIDGET_CLASS (parent_class)->key_press_event) (widget, event);
3483 }
3484
3485 /* FIXME Is this function necessary? Can I get an enter_notify event
3486  * w/o either an expose event or a mouse motion event?
3487  */
3488 static gboolean
3489 gtk_tree_view_enter_notify (GtkWidget        *widget,
3490                             GdkEventCrossing *event)
3491 {
3492   GtkTreeView *tree_view;
3493   GtkRBTree *tree;
3494   GtkRBNode *node;
3495   gint new_y;
3496
3497   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3498
3499   tree_view = GTK_TREE_VIEW (widget);
3500
3501   /* Sanity check it */
3502   if (event->window != tree_view->priv->bin_window)
3503     return FALSE;
3504
3505   if (tree_view->priv->tree == NULL)
3506     return FALSE;
3507
3508   if ((tree_view->priv->button_pressed_node != NULL) &&
3509       (tree_view->priv->button_pressed_node != node))
3510     return TRUE;
3511
3512   /* find the node internally */
3513   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
3514   if (new_y < 0)
3515     new_y = 0;
3516   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
3517
3518   if (node == NULL)
3519     return FALSE;
3520
3521   do_prelight (tree_view, tree, node, event->x, event->y);
3522
3523   if (tree_view->priv->prelight_node)
3524     _gtk_tree_view_queue_draw_node (tree_view,
3525                                    tree_view->priv->prelight_tree,
3526                                    tree_view->priv->prelight_node,
3527                                    NULL);
3528
3529   return TRUE;
3530 }
3531
3532 static gboolean
3533 gtk_tree_view_leave_notify (GtkWidget        *widget,
3534                             GdkEventCrossing *event)
3535 {
3536   GtkTreeView *tree_view;
3537
3538   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
3539
3540   if (event->mode == GDK_CROSSING_GRAB)
3541     return TRUE;
3542   tree_view = GTK_TREE_VIEW (widget);
3543
3544   if (tree_view->priv->prelight_node)
3545     _gtk_tree_view_queue_draw_node (tree_view,
3546                                    tree_view->priv->prelight_tree,
3547                                    tree_view->priv->prelight_node,
3548                                    NULL);
3549
3550   ensure_unprelighted (tree_view);
3551
3552 return TRUE;
3553 }
3554
3555
3556 static gint
3557 gtk_tree_view_focus_out (GtkWidget     *widget,
3558                          GdkEventFocus *event)
3559 {
3560   GtkWidget   *search_dialog;
3561
3562   gtk_widget_queue_draw (widget);
3563
3564   /* destroy interactive search dialog */
3565   search_dialog = gtk_object_get_data (GTK_OBJECT (widget),
3566                                        GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
3567   if (search_dialog)
3568     gtk_tree_view_search_dialog_destroy (search_dialog, GTK_TREE_VIEW (widget));
3569
3570   return FALSE;
3571 }
3572
3573
3574 /* Incremental Reflow
3575  */
3576
3577 /* Returns TRUE if it updated the size
3578  */
3579 static gboolean
3580 validate_row (GtkTreeView *tree_view,
3581               GtkRBTree   *tree,
3582               GtkRBNode   *node,
3583               GtkTreeIter *iter,
3584               GtkTreePath *path)
3585 {
3586   GtkTreeViewColumn *column;
3587   GList *list;
3588   gint height = 0;
3589   gint horizontal_separator;
3590   gint depth = gtk_tree_path_get_depth (path);
3591   gboolean retval = FALSE;
3592
3593   /* double check the row needs validating */
3594   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
3595       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3596     return FALSE;
3597
3598   gtk_widget_style_get (GTK_WIDGET (tree_view),
3599                         "horizontal_separator", &horizontal_separator,
3600                         NULL);
3601
3602   for (list = tree_view->priv->columns; list; list = list->next)
3603     {
3604       gint tmp_width;
3605       gint tmp_height;
3606
3607       column = list->data;
3608
3609       if (! column->visible)
3610         continue;
3611
3612       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
3613         continue;
3614
3615       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
3616                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
3617                                                node->children?TRUE:FALSE);
3618       gtk_tree_view_column_cell_get_size (column,
3619                                           NULL, NULL, NULL,
3620                                           &tmp_width, &tmp_height);
3621       height = MAX (height, tmp_height);
3622       height = MAX (height, tree_view->priv->expander_size);
3623
3624       if (gtk_tree_view_is_expander_column (tree_view, column) && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3625         {
3626           tmp_width = tmp_width + horizontal_separator + depth * (tree_view->priv->expander_size);
3627         }
3628       else
3629         tmp_width = tmp_width + horizontal_separator;
3630
3631       if (tmp_width > column->requested_width)
3632         {
3633           retval = TRUE;
3634           column->requested_width = tmp_width;
3635         }
3636     }
3637
3638   if (height != GTK_RBNODE_GET_HEIGHT (node))
3639     {
3640       retval = TRUE;
3641       _gtk_rbtree_node_set_height (tree, node, height);
3642     }
3643   _gtk_rbtree_node_mark_valid (tree, node);
3644
3645   return retval;
3646 }
3647
3648
3649 static void
3650 validate_visible_area (GtkTreeView *tree_view)
3651 {
3652   GtkTreePath *path = NULL;
3653   GtkTreePath *above_path = NULL;
3654   GtkTreeIter iter;
3655   GtkRBTree *tree = NULL;
3656   GtkRBNode *node = NULL;
3657   gboolean need_redraw = FALSE;
3658   gboolean size_changed = FALSE;
3659   gboolean modify_dy = FALSE;
3660   gint total_height;
3661   gint area_above = 0;
3662   gint area_below = 0;
3663
3664   if (tree_view->priv->tree == NULL)
3665     return;
3666
3667   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
3668       tree_view->priv->scroll_to_path == NULL)
3669       return;
3670
3671   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
3672
3673   /* First, we check to see if we need to scroll anywhere
3674    */
3675   if (tree_view->priv->scroll_to_path)
3676     {
3677       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
3678       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
3679         {
3680           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3681           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3682               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3683             {
3684               need_redraw = TRUE;
3685               if (validate_row (tree_view, tree, node, &iter, path))
3686                 size_changed = TRUE;
3687             }
3688           if (tree_view->priv->scroll_to_use_align)
3689             {
3690               gint height = MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3691               area_above = (total_height - height) *
3692                 tree_view->priv->scroll_to_row_align;
3693               area_below = total_height - area_above - height;
3694               area_above = MAX (area_above, 0);
3695               area_below = MAX (area_below, 0);
3696             }
3697           else
3698             {
3699               /* FIXME: */
3700               g_warning ("non use_align not implemented yet");
3701               gtk_tree_path_free (path);
3702               path = NULL;
3703             }
3704         }
3705       else
3706         /* the scroll to isn't valid; ignore it.
3707          */
3708         {
3709           if (tree_view->priv->scroll_to_path && !path)
3710             {
3711               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
3712               tree_view->priv->scroll_to_path = NULL;
3713             }
3714           if (path)
3715             gtk_tree_path_free (path);
3716           path = NULL;
3717         }
3718     }
3719
3720   /* We didn't have a scroll_to set, so we just handle things normally
3721    */
3722   if (path == NULL)
3723     {
3724       gint offset;
3725
3726       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
3727                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
3728                                         &tree, &node);
3729       if (node == NULL)
3730         {
3731           /* In this case, nothing has been validated */
3732           path = gtk_tree_path_new_first ();
3733           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
3734         }
3735       else
3736         {
3737           path = _gtk_tree_view_find_path (tree_view, tree, node);
3738           total_height += offset;
3739         }
3740
3741       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3742
3743       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3744           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3745         {
3746           need_redraw = TRUE;
3747           if (validate_row (tree_view, tree, node, &iter, path))
3748             size_changed = TRUE;
3749         }
3750       area_above = 0;
3751       area_below = total_height - MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3752     }
3753
3754   above_path = gtk_tree_path_copy (path);
3755
3756   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
3757    * backwards is much slower then forward, as there is no iter_prev function.
3758    * We go forwards first in case we run out of tree.  Then we go backwards to
3759    * fill out the top.
3760    */
3761   while (node && area_below > 0)
3762     {
3763       if (node->children)
3764         {
3765           GtkTreeIter parent = iter;
3766           gboolean has_child;
3767
3768           tree = node->children;
3769           node = tree->root;
3770
3771           g_assert (node != tree->nil);
3772
3773           while (node->left != tree->nil)
3774             node = node->left;
3775           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
3776                                                     &iter,
3777                                                     &parent);
3778           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
3779           gtk_tree_path_down (path);
3780         }
3781       else
3782         {
3783           gboolean done = FALSE;
3784           do
3785             {
3786               node = _gtk_rbtree_next (tree, node);
3787               if (node != NULL)
3788                 {
3789                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
3790                   done = TRUE;
3791                   gtk_tree_path_next (path);
3792
3793                   /* Sanity Check! */
3794                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
3795                 }
3796               else
3797                 {
3798                   GtkTreeIter parent_iter = iter;
3799                   gboolean has_parent;
3800
3801                   node = tree->parent_node;
3802                   tree = tree->parent_tree;
3803                   if (tree == NULL)
3804                     break;
3805                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
3806                                                            &iter,
3807                                                            &parent_iter);
3808                   gtk_tree_path_up (path);
3809
3810                   /* Sanity check */
3811                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
3812                 }
3813             }
3814           while (!done);
3815         }
3816       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3817           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3818         {
3819           need_redraw = TRUE;
3820           if (validate_row (tree_view, tree, node, &iter, path))
3821             size_changed = TRUE;
3822         }
3823       if (node)
3824         area_below -= MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3825     }
3826   gtk_tree_path_free (path);
3827
3828   /* If we ran out of tree, and have extra area_below left, we need to remove it
3829    * from the area_above */
3830   if (area_below > 0)
3831     area_above += area_below;
3832
3833   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
3834
3835   /* We walk backwards */
3836   do
3837     {
3838       _gtk_rbtree_prev_full (tree, node, &tree, &node);
3839       if (! gtk_tree_path_prev (above_path) && node != NULL)
3840         {
3841           gtk_tree_path_free (above_path);
3842           above_path = _gtk_tree_view_find_path (tree_view, tree, node);
3843         }
3844       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
3845
3846       if (node == NULL)
3847         break;
3848
3849       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3850           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3851         {
3852           need_redraw = TRUE;
3853           if (validate_row (tree_view, tree, node, &iter, above_path))
3854             size_changed = TRUE;
3855         }
3856       area_above -= MAX (GTK_RBNODE_GET_HEIGHT (node), tree_view->priv->expander_size);
3857       modify_dy = TRUE;
3858     }
3859   while (area_above > 0);
3860
3861   /* if we walk backwards at all, then we need to reset our dy. */
3862   if (modify_dy)
3863     {
3864       if (node != NULL)
3865         {
3866           tree_view->priv->dy = _gtk_rbtree_node_find_offset (tree, node) - area_above;
3867         }
3868       else
3869         {
3870           tree_view->priv->dy = 0;
3871         }
3872       gtk_adjustment_set_value (tree_view->priv->vadjustment, tree_view->priv->dy);
3873       need_redraw = TRUE;
3874     }
3875
3876   if (tree_view->priv->scroll_to_path)
3877     {
3878       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
3879       tree_view->priv->scroll_to_path = NULL;
3880     }
3881
3882   if (above_path)
3883     gtk_tree_path_free (above_path);
3884
3885   if (tree_view->priv->scroll_to_column)
3886     {
3887       tree_view->priv->scroll_to_column = NULL;
3888     }
3889   if (size_changed)
3890     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
3891   if (need_redraw)
3892     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3893 }
3894
3895
3896 /* Our strategy for finding nodes to validate is a little convoluted.  We find
3897  * the left-most uninvalidated node.  We then try walking right, validating
3898  * nodes.  Once we find a valid node, we repeat the previous process of finding
3899  * the first invalid node.
3900  */
3901
3902 static gboolean
3903 do_validate_rows (GtkTreeView *tree_view)
3904 {
3905   GtkRBTree *tree = NULL;
3906   GtkRBNode *node = NULL;
3907   gboolean validated_area = FALSE;
3908   gint retval = TRUE;
3909   GtkTreePath *path = NULL;
3910   GtkTreeIter iter;
3911   gint i = 0;
3912   g_assert (tree_view);
3913
3914   if (tree_view->priv->tree == NULL)
3915     {
3916       tree_view->priv->validate_rows_timer = 0;
3917       return FALSE;
3918     }
3919   do
3920     {
3921
3922       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
3923         {
3924           retval = FALSE;
3925           goto done;
3926         }
3927
3928       if (path != NULL)
3929         {
3930           node = _gtk_rbtree_next (tree, node);
3931           if (node != NULL)
3932             {
3933               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
3934               gtk_tree_path_next (path);
3935             }
3936           else
3937             {
3938               gtk_tree_path_free (path);
3939               path = NULL;
3940             }
3941         }
3942
3943       if (path == NULL)
3944         {
3945           tree = tree_view->priv->tree;
3946           node = tree_view->priv->tree->root;
3947
3948           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
3949
3950           do
3951             {
3952               if (node->left != tree->nil &&
3953                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
3954                 {
3955                   node = node->left;
3956                 }
3957               else if (node->right != tree->nil &&
3958                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
3959                 {
3960                   node = node->right;
3961                 }
3962               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
3963                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
3964                 {
3965                   break;
3966                 }
3967               else if (node->children != NULL)
3968                 {
3969                   tree = node->children;
3970                   node = tree->root;
3971                 }
3972               else
3973                 /* RBTree corruption!  All bad */
3974                 g_assert_not_reached ();
3975             }
3976           while (TRUE);
3977           path = _gtk_tree_view_find_path (tree_view, tree, node);
3978           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
3979         }
3980       validated_area = validate_row (tree_view, tree, node, &iter, path) | validated_area;
3981       i++;
3982     }
3983   while (i < GTK_TREE_VIEW_NUM_ROWS_PER_IDLE);
3984
3985  done:
3986   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
3987     gtk_tree_view_top_row_to_dy (tree_view);
3988   else
3989     gtk_tree_view_dy_to_top_row (tree_view);
3990
3991   if (path) gtk_tree_path_free (path);
3992   if (validated_area)
3993     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
3994   if (! retval)
3995     tree_view->priv->validate_rows_timer = 0;
3996
3997   return retval;
3998 }
3999
4000 static gboolean
4001 validate_rows_handler (GtkTreeView *tree_view)
4002 {
4003   gboolean retval;
4004
4005   GDK_THREADS_ENTER ();
4006
4007   retval = do_validate_rows (tree_view);
4008
4009   GDK_THREADS_LEAVE ();
4010
4011   return retval;
4012 }
4013
4014 static gboolean
4015 do_presize_handler (GtkTreeView *tree_view)
4016 {
4017   if (tree_view->priv->mark_rows_col_dirty)
4018     {
4019       if (tree_view->priv->tree)
4020         _gtk_rbtree_column_invalid (tree_view->priv->tree);
4021       tree_view->priv->mark_rows_col_dirty = FALSE;
4022     }
4023   validate_visible_area (tree_view);
4024   tree_view->priv->presize_handler_timer = 0;
4025
4026   return FALSE;
4027 }
4028
4029 static gboolean
4030 presize_handler_callback (gpointer data)
4031 {
4032   GDK_THREADS_ENTER ();
4033
4034   do_presize_handler (GTK_TREE_VIEW (data));
4035
4036   GDK_THREADS_LEAVE ();
4037
4038   return FALSE;
4039 }
4040
4041 static void
4042 install_presize_handler (GtkTreeView *tree_view)
4043 {
4044   if (! GTK_WIDGET_REALIZED (tree_view))
4045     return;
4046
4047   if (! tree_view->priv->presize_handler_timer)
4048     {
4049       tree_view->priv->presize_handler_timer =
4050         g_idle_add_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
4051     }
4052   if (! tree_view->priv->validate_rows_timer)
4053     {
4054       tree_view->priv->validate_rows_timer =
4055         g_idle_add_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
4056     }
4057 }
4058
4059 /* Always call this iff dy is in the visible range.  If the tree is empty, then
4060  * it's set to be NULL, and top_row_dy is 0;
4061  */
4062 static void
4063 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
4064 {
4065   GtkTreePath *path;
4066   GtkRBTree *tree;
4067   GtkRBNode *node;
4068
4069   gtk_tree_row_reference_free (tree_view->priv->top_row);
4070   if (tree_view->priv->tree == NULL)
4071     tree = NULL;
4072   else
4073     tree_view->priv->top_row_dy = _gtk_rbtree_find_offset (tree_view->priv->tree,
4074                                                            tree_view->priv->dy,
4075                                                            &tree, &node);
4076   if (tree == NULL)
4077     {
4078       tree_view->priv->top_row = NULL;
4079       tree_view->priv->top_row_dy = 0;
4080       return;
4081     }
4082
4083   path = _gtk_tree_view_find_path (tree_view, tree, node);
4084   tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
4085   gtk_tree_path_free (path);
4086 }
4087
4088 static void
4089 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
4090 {
4091   GtkTreePath *path;
4092   GtkRBTree *tree;
4093   GtkRBNode *node;
4094
4095   if (tree_view->priv->top_row)
4096     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
4097   else
4098     path = NULL;
4099
4100   if (!path)
4101     tree = NULL;
4102   else
4103     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
4104
4105   if (path)
4106     gtk_tree_path_free (path);
4107
4108   if (tree == NULL)
4109     {
4110       /* keep dy and set new toprow */
4111       gtk_tree_row_reference_free (tree_view->priv->top_row);
4112       tree_view->priv->top_row = NULL;
4113       tree_view->priv->top_row_dy = 0;
4114       gtk_tree_view_dy_to_top_row (tree_view);
4115       return;
4116     }
4117
4118   if (MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size)
4119       < tree_view->priv->top_row_dy)
4120     {
4121       /* new top row */
4122       gtk_tree_view_dy_to_top_row (tree_view);
4123       return;
4124     }
4125
4126   tree_view->priv->dy = _gtk_rbtree_node_find_offset (tree, node);
4127   tree_view->priv->dy += tree_view->priv->top_row_dy;
4128   gtk_adjustment_set_value (tree_view->priv->vadjustment,
4129                             tree_view->priv->dy);
4130 }
4131
4132 void
4133 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
4134 {
4135   tree_view->priv->mark_rows_col_dirty = TRUE;
4136
4137   install_presize_handler (tree_view);
4138 }
4139
4140 /* Drag-and-drop */
4141
4142 static void
4143 set_source_row (GdkDragContext *context,
4144                 GtkTreeModel   *model,
4145                 GtkTreePath    *source_row)
4146 {
4147   g_object_set_data_full (G_OBJECT (context),
4148                           "gtk-tree-view-source-row",
4149                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
4150                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
4151 }
4152
4153 static GtkTreePath*
4154 get_source_row (GdkDragContext *context)
4155 {
4156   GtkTreeRowReference *ref =
4157     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
4158
4159   if (ref)
4160     return gtk_tree_row_reference_get_path (ref);
4161   else
4162     return NULL;
4163 }
4164
4165
4166 static void
4167 set_dest_row (GdkDragContext *context,
4168               GtkTreeModel   *model,
4169               GtkTreePath    *dest_row)
4170 {
4171   g_object_set_data_full (G_OBJECT (context),
4172                           "gtk-tree-view-dest-row",
4173                           dest_row ? gtk_tree_row_reference_new (model, dest_row) : NULL,
4174                           (GDestroyNotify) (dest_row ? gtk_tree_row_reference_free : NULL));
4175 }
4176
4177 static GtkTreePath*
4178 get_dest_row (GdkDragContext *context)
4179 {
4180   GtkTreeRowReference *ref =
4181     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
4182
4183   if (ref)
4184     return gtk_tree_row_reference_get_path (ref);
4185   else
4186     return NULL;
4187 }
4188
4189 /* Get/set whether drag_motion requested the drag data and
4190  * drag_data_received should thus not actually insert the data,
4191  * since the data doesn't result from a drop.
4192  */
4193 static void
4194 set_status_pending (GdkDragContext *context,
4195                     GdkDragAction   suggested_action)
4196 {
4197   g_object_set_data (G_OBJECT (context),
4198                      "gtk-tree-view-status-pending",
4199                      GINT_TO_POINTER (suggested_action));
4200 }
4201
4202 static GdkDragAction
4203 get_status_pending (GdkDragContext *context)
4204 {
4205   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
4206                                              "gtk-tree-view-status-pending"));
4207 }
4208
4209 static TreeViewDragInfo*
4210 get_info (GtkTreeView *tree_view)
4211 {
4212   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
4213 }
4214
4215 static void
4216 clear_source_info (TreeViewDragInfo *di)
4217 {
4218   if (di->source_target_list)
4219     gtk_target_list_unref (di->source_target_list);
4220
4221   di->source_target_list = NULL;
4222 }
4223
4224 static void
4225 clear_dest_info (TreeViewDragInfo *di)
4226 {
4227   if (di->dest_target_list)
4228     gtk_target_list_unref (di->dest_target_list);
4229
4230   di->dest_target_list = NULL;
4231 }
4232
4233 static void
4234 destroy_info (TreeViewDragInfo *di)
4235 {
4236   clear_source_info (di);
4237   clear_dest_info (di);
4238   g_free (di);
4239 }
4240
4241 static TreeViewDragInfo*
4242 ensure_info (GtkTreeView *tree_view)
4243 {
4244   TreeViewDragInfo *di;
4245
4246   di = get_info (tree_view);
4247
4248   if (di == NULL)
4249     {
4250       di = g_new0 (TreeViewDragInfo, 1);
4251
4252       g_object_set_data_full (G_OBJECT (tree_view),
4253                               "gtk-tree-view-drag-info",
4254                               di,
4255                               (GDestroyNotify) destroy_info);
4256     }
4257
4258   return di;
4259 }
4260
4261 static void
4262 remove_info (GtkTreeView *tree_view)
4263 {
4264   g_object_set_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info", NULL);
4265 }
4266
4267 #if 0
4268 static gint
4269 drag_scan_timeout (gpointer data)
4270 {
4271   GtkTreeView *tree_view;
4272   gint x, y;
4273   GdkModifierType state;
4274   GtkTreePath *path = NULL;
4275   GtkTreeViewColumn *column = NULL;
4276   GdkRectangle visible_rect;
4277
4278   GDK_THREADS_ENTER ();
4279
4280   tree_view = GTK_TREE_VIEW (data);
4281
4282   gdk_window_get_pointer (tree_view->priv->bin_window,
4283                           &x, &y, &state);
4284
4285   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
4286
4287   /* See if we are near the edge. */
4288   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
4289       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
4290       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
4291       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
4292     {
4293       gtk_tree_view_get_path_at_pos (tree_view,
4294                                      tree_view->priv->bin_window,
4295                                      x, y,
4296                                      &path,
4297                                      &column,
4298                                      NULL,
4299                                      NULL);
4300
4301       if (path != NULL)
4302         {
4303           gtk_tree_view_scroll_to_cell (tree_view,
4304                                         path,
4305                                         column,
4306                                         TRUE,
4307                                         0.5, 0.5);
4308
4309           gtk_tree_path_free (path);
4310         }
4311     }
4312
4313   GDK_THREADS_LEAVE ();
4314
4315   return TRUE;
4316 }
4317 #endif /* 0 */
4318
4319 static void
4320 remove_scroll_timeout (GtkTreeView *tree_view)
4321 {
4322   if (tree_view->priv->scroll_timeout != 0)
4323     {
4324       gtk_timeout_remove (tree_view->priv->scroll_timeout);
4325       tree_view->priv->scroll_timeout = 0;
4326     }
4327 }
4328 static gboolean
4329 check_model_dnd (GtkTreeModel *model,
4330                  GType         required_iface,
4331                  const gchar  *signal)
4332 {
4333   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
4334     {
4335       g_warning ("You must override the default '%s' handler "
4336                  "on GtkTreeView when using models that don't support "
4337                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
4338                  "is to connect to '%s' and call "
4339                  "gtk_signal_emit_stop_by_name() in your signal handler to prevent "
4340                  "the default handler from running. Look at the source code "
4341                  "for the default handler in gtktreeview.c to get an idea what "
4342                  "your handler should do. (gtktreeview.c is in the GTK source "
4343                  "code.) If you're using GTK from a language other than C, "
4344                  "there may be a more natural way to override default handlers, e.g. via derivation.",
4345                  signal, g_type_name (required_iface), signal);
4346       return FALSE;
4347     }
4348   else
4349     return TRUE;
4350 }
4351
4352 static void
4353 remove_open_timeout (GtkTreeView *tree_view)
4354 {
4355   if (tree_view->priv->open_dest_timeout != 0)
4356     {
4357       gtk_timeout_remove (tree_view->priv->open_dest_timeout);
4358       tree_view->priv->open_dest_timeout = 0;
4359     }
4360 }
4361
4362
4363 static gint
4364 open_row_timeout (gpointer data)
4365 {
4366   GtkTreeView *tree_view = data;
4367   GtkTreePath *dest_path = NULL;
4368   GtkTreeViewDropPosition pos;
4369   gboolean result = FALSE;
4370
4371   GDK_THREADS_ENTER ();
4372
4373   gtk_tree_view_get_drag_dest_row (tree_view,
4374                                    &dest_path,
4375                                    &pos);
4376
4377   if (dest_path &&
4378       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4379        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
4380     {
4381       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
4382       tree_view->priv->open_dest_timeout = 0;
4383
4384       gtk_tree_path_free (dest_path);
4385     }
4386   else
4387     {
4388       if (dest_path)
4389         gtk_tree_path_free (dest_path);
4390
4391       result = TRUE;
4392     }
4393
4394   GDK_THREADS_LEAVE ();
4395
4396   return result;
4397 }
4398
4399 static gint
4400 scroll_row_timeout (gpointer data)
4401 {
4402   GtkTreeView *tree_view = data;
4403
4404   GDK_THREADS_ENTER ();
4405
4406   gtk_tree_view_vertical_autoscroll (tree_view);
4407
4408   GDK_THREADS_LEAVE ();
4409
4410   return TRUE;
4411 }
4412
4413 /* Returns TRUE if event should not be propagated to parent widgets */
4414 static gboolean
4415 set_destination_row (GtkTreeView    *tree_view,
4416                      GdkDragContext *context,
4417                      gint            x,
4418                      gint            y,
4419                      GdkDragAction  *suggested_action,
4420                      GdkAtom        *target)
4421 {
4422   GtkTreePath *path = NULL;
4423   GtkTreeViewDropPosition pos;
4424   GtkTreeViewDropPosition old_pos;
4425   TreeViewDragInfo *di;
4426   GtkWidget *widget;
4427   GtkTreePath *old_dest_path = NULL;
4428
4429   *suggested_action = 0;
4430   *target = GDK_NONE;
4431
4432   widget = GTK_WIDGET (tree_view);
4433
4434   di = get_info (tree_view);
4435
4436   if (di == NULL)
4437     {
4438       /* someone unset us as a drag dest, note that if
4439        * we return FALSE drag_leave isn't called
4440        */
4441
4442       gtk_tree_view_set_drag_dest_row (tree_view,
4443                                        NULL,
4444                                        GTK_TREE_VIEW_DROP_BEFORE);
4445
4446       remove_scroll_timeout (GTK_TREE_VIEW (widget));
4447       remove_open_timeout (GTK_TREE_VIEW (widget));
4448
4449       return FALSE; /* no longer a drop site */
4450     }
4451
4452   *target = gtk_drag_dest_find_target (widget, context, di->dest_target_list);
4453   if (*target == GDK_NONE)
4454     {
4455       return FALSE;
4456     }
4457
4458   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
4459                                           x, y,
4460                                           &path,
4461                                           &pos))
4462     {
4463       /* can't drop here */
4464       remove_open_timeout (tree_view);
4465
4466       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4467                                        NULL,
4468                                        GTK_TREE_VIEW_DROP_BEFORE);
4469
4470       if (path)
4471         gtk_tree_path_free (path);
4472
4473       /* don't propagate to parent though */
4474       return TRUE;
4475     }
4476
4477   g_assert (path);
4478
4479   /* If we left the current row's "open" zone, unset the timeout for
4480    * opening the row
4481    */
4482   gtk_tree_view_get_drag_dest_row (tree_view,
4483                                    &old_dest_path,
4484                                    &old_pos);
4485
4486   if (old_dest_path &&
4487       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
4488        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4489          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
4490     remove_open_timeout (tree_view);
4491
4492   if (old_dest_path)
4493     gtk_tree_path_free (old_dest_path);
4494
4495   if (TRUE /* FIXME if the location droppable predicate */)
4496     {
4497       GtkWidget *source_widget;
4498
4499       *suggested_action = context->suggested_action;
4500
4501       source_widget = gtk_drag_get_source_widget (context);
4502
4503       if (source_widget == widget)
4504         {
4505           /* Default to MOVE, unless the user has
4506            * pressed ctrl or alt to affect available actions
4507            */
4508           if ((context->actions & GDK_ACTION_MOVE) != 0)
4509             *suggested_action = GDK_ACTION_MOVE;
4510         }
4511
4512       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4513                                        path, pos);
4514     }
4515   else
4516     {
4517       /* can't drop here */
4518       remove_open_timeout (tree_view);
4519
4520       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4521                                        NULL,
4522                                        GTK_TREE_VIEW_DROP_BEFORE);
4523     }
4524
4525   if (path)
4526     gtk_tree_path_free (path);
4527
4528   return TRUE;
4529 }
4530 static GtkTreePath*
4531 get_logical_dest_row (GtkTreeView *tree_view)
4532
4533 {
4534   /* adjust path to point to the row the drop goes in front of */
4535   GtkTreePath *path = NULL;
4536   GtkTreeViewDropPosition pos;
4537
4538   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
4539
4540   if (path == NULL)
4541     return NULL;
4542
4543   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
4544     ; /* do nothing */
4545   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
4546            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
4547     {
4548       /* get first child, drop before it */
4549       gtk_tree_path_down (path);
4550     }
4551   else
4552     {
4553       GtkTreeIter iter;
4554       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
4555
4556       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
4557
4558       gtk_tree_model_get_iter (model, &iter, path);
4559
4560       if (!gtk_tree_model_iter_next (model, &iter))
4561         g_object_set_data (G_OBJECT (model), "gtk-tree-model-drop-append",
4562                            GINT_TO_POINTER (1));
4563       else
4564         {
4565           g_object_set_data (G_OBJECT (model), "gtk-tree-model-drop-append",
4566                              NULL);
4567           gtk_tree_path_next (path);
4568         }
4569     }
4570
4571   return path;
4572 }
4573
4574 static gboolean
4575 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
4576                                         GdkEventMotion   *event)
4577 {
4578   GdkDragContext *context;
4579   TreeViewDragInfo *di;
4580   GtkTreePath *path = NULL;
4581   gint button;
4582   gint cell_x, cell_y;
4583   GtkTreeModel *model;
4584   gboolean retval = FALSE;
4585
4586   di = get_info (tree_view);
4587
4588   if (di == NULL)
4589     goto out;
4590
4591   if (tree_view->priv->pressed_button < 0)
4592     goto out;
4593
4594   if (!gtk_drag_check_threshold (GTK_WIDGET (tree_view),
4595                                  tree_view->priv->press_start_x,
4596                                  tree_view->priv->press_start_y,
4597                                  event->x, event->y))
4598     goto out;
4599
4600   model = gtk_tree_view_get_model (tree_view);
4601
4602   if (model == NULL)
4603     goto out;
4604
4605   button = tree_view->priv->pressed_button;
4606   tree_view->priv->pressed_button = -1;
4607
4608   gtk_tree_view_get_path_at_pos (tree_view,
4609                                  tree_view->priv->press_start_x,
4610                                  tree_view->priv->press_start_y,
4611                                  &path,
4612                                  NULL,
4613                                  &cell_x,
4614                                  &cell_y);
4615
4616   if (path == NULL)
4617     goto out;
4618
4619   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
4620       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
4621                                            path))
4622     goto out;
4623
4624   /* FIXME Check whether we're a start button, if not return FALSE and
4625    * free path
4626    */
4627
4628   /* Now we can begin the drag */
4629
4630   retval = TRUE;
4631
4632   context = gtk_drag_begin (GTK_WIDGET (tree_view),
4633                             di->source_target_list,
4634                             di->source_actions,
4635                             button,
4636                             (GdkEvent*)event);
4637
4638   gtk_drag_set_icon_default (context);
4639
4640   {
4641     GdkPixmap *row_pix;
4642
4643     row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
4644                                                   path);
4645
4646     gtk_drag_set_icon_pixmap (context,
4647                               gdk_drawable_get_colormap (row_pix),
4648                               row_pix,
4649                               NULL,
4650                               /* the + 1 is for the black border in the icon */
4651                               tree_view->priv->press_start_x + 1,
4652                               cell_y + 1);
4653
4654     gdk_pixmap_unref (row_pix);
4655   }
4656
4657   set_source_row (context, model, path);
4658
4659  out:
4660   if (path)
4661     gtk_tree_path_free (path);
4662
4663   return retval;
4664 }
4665
4666
4667 static void
4668 gtk_tree_view_drag_begin (GtkWidget      *widget,
4669                           GdkDragContext *context)
4670 {
4671   /* do nothing */
4672 }
4673
4674 static void
4675 gtk_tree_view_drag_end (GtkWidget      *widget,
4676                         GdkDragContext *context)
4677 {
4678   /* do nothing */
4679 }
4680
4681 /* Default signal implementations for the drag signals */
4682 static void
4683 gtk_tree_view_drag_data_get (GtkWidget        *widget,
4684                              GdkDragContext   *context,
4685                              GtkSelectionData *selection_data,
4686                              guint             info,
4687                              guint             time)
4688 {
4689   GtkTreeView *tree_view;
4690   GtkTreeModel *model;
4691   TreeViewDragInfo *di;
4692   GtkTreePath *source_row;
4693
4694   tree_view = GTK_TREE_VIEW (widget);
4695
4696   model = gtk_tree_view_get_model (tree_view);
4697
4698   if (model == NULL)
4699     return;
4700
4701   di = get_info (GTK_TREE_VIEW (widget));
4702
4703   if (di == NULL)
4704     return;
4705
4706   source_row = get_source_row (context);
4707
4708   if (source_row == NULL)
4709     return;
4710
4711   /* We can implement the GTK_TREE_MODEL_ROW target generically for
4712    * any model; for DragSource models there are some other targets
4713    * we also support.
4714    */
4715
4716   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
4717       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
4718                                           source_row,
4719                                           selection_data))
4720     goto done;
4721
4722   /* If drag_data_get does nothing, try providing row data. */
4723   if (selection_data->target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
4724     {
4725       gtk_tree_set_row_drag_data (selection_data,
4726                                   model,
4727                                   source_row);
4728     }
4729
4730  done:
4731   gtk_tree_path_free (source_row);
4732 }
4733
4734
4735 static void
4736 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
4737                                 GdkDragContext *context)
4738 {
4739   TreeViewDragInfo *di;
4740   GtkTreeModel *model;
4741   GtkTreeView *tree_view;
4742   GtkTreePath *source_row;
4743
4744   tree_view = GTK_TREE_VIEW (widget);
4745   model = gtk_tree_view_get_model (tree_view);
4746
4747   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
4748     return;
4749
4750   di = get_info (tree_view);
4751
4752   if (di == NULL)
4753     return;
4754
4755   source_row = get_source_row (context);
4756
4757   if (source_row == NULL)
4758     return;
4759
4760   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
4761                                          source_row);
4762
4763   gtk_tree_path_free (source_row);
4764
4765   set_source_row (context, NULL, NULL);
4766 }
4767
4768 static void
4769 gtk_tree_view_drag_leave (GtkWidget      *widget,
4770                           GdkDragContext *context,
4771                           guint             time)
4772 {
4773   TreeViewDragInfo *di;
4774
4775   di = get_info (GTK_TREE_VIEW (widget));
4776
4777   /* unset any highlight row */
4778   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4779                                    NULL,
4780                                    GTK_TREE_VIEW_DROP_BEFORE);
4781
4782   remove_scroll_timeout (GTK_TREE_VIEW (widget));
4783   remove_open_timeout (GTK_TREE_VIEW (widget));
4784 }
4785
4786
4787 static gboolean
4788 gtk_tree_view_drag_motion (GtkWidget        *widget,
4789                            GdkDragContext   *context,
4790                            gint              x,
4791                            gint              y,
4792                            guint             time)
4793 {
4794   GtkTreePath *path = NULL;
4795   GtkTreeViewDropPosition pos;
4796   GtkTreeView *tree_view;
4797   GdkDragAction suggested_action = 0;
4798   GdkAtom target;
4799
4800   tree_view = GTK_TREE_VIEW (widget);
4801
4802   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
4803     return FALSE;
4804
4805   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
4806
4807   if (path == NULL)
4808     {
4809       /* Can't drop here. */
4810       gdk_drag_status (context, 0, time);
4811     }
4812   else
4813     {
4814       if (tree_view->priv->open_dest_timeout == 0 &&
4815           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
4816            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
4817         {
4818           tree_view->priv->open_dest_timeout =
4819             gtk_timeout_add (500, open_row_timeout, tree_view);
4820         }
4821       else if (tree_view->priv->scroll_timeout == 0)
4822         {
4823           tree_view->priv->scroll_timeout =
4824             gtk_timeout_add (150, scroll_row_timeout, tree_view);
4825         }
4826
4827       if (target == gdk_atom_intern ("GTK_TREE_MODEL_ROW", FALSE))
4828         {
4829           /* Request data so we can use the source row when
4830            * determining whether to accept the drop
4831            */
4832           set_status_pending (context, suggested_action);
4833           gtk_drag_get_data (widget, context, target, time);
4834         }
4835       else
4836         {
4837           set_status_pending (context, 0);
4838           gdk_drag_status (context, suggested_action, time);
4839         }
4840     }
4841
4842   if (path)
4843     gtk_tree_path_free (path);
4844
4845   return TRUE;
4846 }
4847
4848
4849 static gboolean
4850 gtk_tree_view_drag_drop (GtkWidget        *widget,
4851                          GdkDragContext   *context,
4852                          gint              x,
4853                          gint              y,
4854                          guint             time)
4855 {
4856   GtkTreeView *tree_view;
4857   GtkTreePath *path;
4858   GdkDragAction suggested_action = 0;
4859   GdkAtom target = GDK_NONE;
4860   TreeViewDragInfo *di;
4861   GtkTreeModel *model;
4862
4863   tree_view = GTK_TREE_VIEW (widget);
4864
4865   model = gtk_tree_view_get_model (tree_view);
4866
4867   remove_scroll_timeout (GTK_TREE_VIEW (widget));
4868   remove_open_timeout (GTK_TREE_VIEW (widget));
4869
4870   di = get_info (tree_view);
4871
4872   if (di == NULL)
4873     return FALSE;
4874
4875   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
4876     return FALSE;
4877
4878   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
4879     return FALSE;
4880
4881   path = get_logical_dest_row (tree_view);
4882
4883   if (target != GDK_NONE && path != NULL)
4884     {
4885       /* in case a motion had requested drag data, change things so we
4886        * treat drag data receives as a drop.
4887        */
4888       set_status_pending (context, 0);
4889
4890       set_dest_row (context, model, path);
4891     }
4892
4893   if (path)
4894     gtk_tree_path_free (path);
4895
4896   /* Unset this thing */
4897   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4898                                    NULL,
4899                                    GTK_TREE_VIEW_DROP_BEFORE);
4900
4901   if (target != GDK_NONE)
4902     {
4903       gtk_drag_get_data (widget, context, target, time);
4904       return TRUE;
4905     }
4906   else
4907     return FALSE;
4908 }
4909
4910 static void
4911 gtk_tree_view_drag_data_received (GtkWidget        *widget,
4912                                   GdkDragContext   *context,
4913                                   gint              x,
4914                                   gint              y,
4915                                   GtkSelectionData *selection_data,
4916                                   guint             info,
4917                                   guint             time)
4918 {
4919   GtkTreePath *path;
4920   TreeViewDragInfo *di;
4921   gboolean accepted = FALSE;
4922   GtkTreeModel *model;
4923   GtkTreeView *tree_view;
4924   GtkTreePath *dest_row;
4925   GdkDragAction suggested_action;
4926
4927   tree_view = GTK_TREE_VIEW (widget);
4928
4929   model = gtk_tree_view_get_model (tree_view);
4930
4931   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
4932     return;
4933
4934   di = get_info (tree_view);
4935
4936   if (di == NULL)
4937     return;
4938
4939   suggested_action = get_status_pending (context);
4940
4941   if (suggested_action)
4942     {
4943       /* We are getting this data due to a request in drag_motion,
4944        * rather than due to a request in drag_drop, so we are just
4945        * supposed to call drag_status, not actually paste in the
4946        * data.
4947        */
4948       path = get_logical_dest_row (tree_view);
4949
4950       if (path == NULL)
4951         suggested_action = 0;
4952
4953       if (suggested_action)
4954         {
4955           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
4956                                                      path,
4957                                                      selection_data))
4958             suggested_action = 0;
4959         }
4960
4961       gdk_drag_status (context, suggested_action, time);
4962
4963       if (path)
4964         gtk_tree_path_free (path);
4965
4966       /* If you can't drop, remove user drop indicator until the next motion */
4967       if (suggested_action == 0)
4968         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
4969                                          NULL,
4970                                          GTK_TREE_VIEW_DROP_BEFORE);
4971
4972       return;
4973     }
4974
4975   dest_row = get_dest_row (context);
4976
4977   if (dest_row == NULL)
4978     return;
4979
4980   if (selection_data->length >= 0)
4981     {
4982       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
4983                                                  dest_row,
4984                                                  selection_data))
4985         accepted = TRUE;
4986     }
4987
4988   gtk_drag_finish (context,
4989                    accepted,
4990                    (context->action == GDK_ACTION_MOVE),
4991                    time);
4992
4993   gtk_tree_path_free (dest_row);
4994
4995   /* drop dest_row */
4996   set_dest_row (context, NULL, NULL);
4997 }
4998
4999
5000
5001 /* GtkContainer Methods
5002  */
5003
5004
5005 static void
5006 gtk_tree_view_remove (GtkContainer *container,
5007                       GtkWidget    *widget)
5008 {
5009   GtkTreeView *tree_view;
5010   GtkTreeViewChild *child = NULL;
5011   GList *tmp_list;
5012
5013   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5014
5015   tree_view = GTK_TREE_VIEW (container);
5016
5017   tmp_list = tree_view->priv->children;
5018   while (tmp_list)
5019     {
5020       child = tmp_list->data;
5021       if (child->widget == widget)
5022         {
5023           gtk_widget_unparent (widget);
5024
5025           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
5026           g_list_free_1 (tmp_list);
5027           g_free (child);
5028           return;
5029         }
5030
5031       tmp_list = tmp_list->next;
5032     }
5033
5034   tmp_list = tree_view->priv->columns;
5035
5036   while (tmp_list)
5037     {
5038       GtkTreeViewColumn *column;
5039       column = tmp_list->data;
5040       if (column->button == widget)
5041         {
5042           gtk_widget_unparent (widget);
5043           return;
5044         }
5045       tmp_list = tmp_list->next;
5046     }
5047 }
5048
5049 static void
5050 gtk_tree_view_forall (GtkContainer *container,
5051                       gboolean      include_internals,
5052                       GtkCallback   callback,
5053                       gpointer      callback_data)
5054 {
5055   GtkTreeView *tree_view;
5056   GtkTreeViewChild *child = NULL;
5057   GtkTreeViewColumn *column;
5058   GList *tmp_list;
5059
5060   g_return_if_fail (GTK_IS_TREE_VIEW (container));
5061   g_return_if_fail (callback != NULL);
5062
5063   tree_view = GTK_TREE_VIEW (container);
5064
5065   tmp_list = tree_view->priv->children;
5066   while (tmp_list)
5067     {
5068       child = tmp_list->data;
5069       tmp_list = tmp_list->next;
5070
5071       (* callback) (child->widget, callback_data);
5072     }
5073   if (include_internals == FALSE)
5074     return;
5075
5076   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5077     {
5078       column = tmp_list->data;
5079
5080       if (column->button)
5081         (* callback) (column->button, callback_data);
5082     }
5083 }
5084
5085 /* Returns TRUE if the focus is within the headers, after the focus operation is
5086  * done
5087  */
5088 static gboolean
5089 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
5090                             GtkDirectionType  dir)
5091 {
5092   GtkWidget *focus_child;
5093   GtkContainer *container;
5094
5095   GList *last_column, *first_column;
5096   GList *tmp_list;
5097
5098   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5099     return FALSE;
5100
5101   focus_child = GTK_CONTAINER (tree_view)->focus_child;
5102   container = GTK_CONTAINER (tree_view);
5103
5104   last_column = g_list_last (tree_view->priv->columns);
5105   while (last_column)
5106     {
5107       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
5108           GTK_TREE_VIEW_COLUMN (last_column->data)->clickable &&
5109           GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable &&
5110           GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
5111         break;
5112       last_column = last_column->prev;
5113     }
5114
5115   /* No headers are visible, or are focusable.  We can't focus in or out.
5116    */
5117   if (last_column == NULL)
5118     return FALSE;
5119
5120   first_column = tree_view->priv->columns;
5121   while (first_column)
5122     {
5123       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
5124           GTK_TREE_VIEW_COLUMN (first_column->data)->clickable &&
5125           GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable &&
5126           GTK_TREE_VIEW_COLUMN (first_column->data)->visible)
5127         break;
5128       first_column = first_column->next;
5129     }
5130
5131   switch (dir)
5132     {
5133     case GTK_DIR_TAB_BACKWARD:
5134     case GTK_DIR_TAB_FORWARD:
5135     case GTK_DIR_UP:
5136     case GTK_DIR_DOWN:
5137       if (focus_child == NULL)
5138         {
5139           if (tree_view->priv->focus_column != NULL)
5140             focus_child = tree_view->priv->focus_column->button;
5141           else
5142             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5143           gtk_widget_grab_focus (focus_child);
5144           break;
5145         }
5146       return FALSE;
5147
5148     case GTK_DIR_LEFT:
5149     case GTK_DIR_RIGHT:
5150       if (focus_child == NULL)
5151         {
5152           if (tree_view->priv->focus_column != NULL)
5153             focus_child = tree_view->priv->focus_column->button;
5154           else if (dir == GTK_DIR_LEFT)
5155             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
5156           else
5157             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5158           gtk_widget_grab_focus (focus_child);
5159           break;
5160         }
5161
5162       if (gtk_widget_child_focus (focus_child, dir))
5163         {
5164           /* The focus moves inside the button. */
5165           /* This is probably a great example of bad UI */
5166           break;
5167         }
5168
5169       /* We need to move the focus among the row of buttons. */
5170       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5171         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
5172           break;
5173
5174       if (tmp_list == first_column && dir == GTK_DIR_LEFT)
5175         {
5176           focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
5177           gtk_widget_grab_focus (focus_child);
5178           break;
5179         }
5180       else if (tmp_list == last_column && dir == GTK_DIR_RIGHT)
5181         {
5182           focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
5183           gtk_widget_grab_focus (focus_child);
5184           break;
5185         }
5186
5187       while (tmp_list)
5188         {
5189           GtkTreeViewColumn *column;
5190
5191           if (dir == GTK_DIR_RIGHT)
5192             tmp_list = tmp_list->next;
5193           else
5194             tmp_list = tmp_list->prev;
5195
5196           if (tmp_list == NULL)
5197             {
5198               g_warning ("Internal button not found");
5199               break;
5200             }
5201           column = tmp_list->data;
5202           if (column->button &&
5203               column->visible &&
5204               GTK_WIDGET_CAN_FOCUS (column->button))
5205             {
5206               focus_child = column->button;
5207               gtk_widget_grab_focus (column->button);
5208               break;
5209             }
5210         }
5211       break;
5212     default:
5213       g_assert_not_reached ();
5214       break;
5215     }
5216
5217   /* if focus child is non-null, we assume it's been set to the current focus child
5218    */
5219   if (focus_child)
5220     {
5221       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
5222         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
5223           break;
5224
5225       tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5226
5227       /* If the following isn't true, then the view is smaller then the scrollpane.
5228        */
5229       if ((focus_child->allocation.x + focus_child->allocation.width) <=
5230           (tree_view->priv->hadjustment->upper))
5231         {
5232           /* Scroll to the button, if needed */
5233           if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
5234               (focus_child->allocation.x + focus_child->allocation.width))
5235             gtk_adjustment_set_value (tree_view->priv->hadjustment,
5236                                       focus_child->allocation.x + focus_child->allocation.width -
5237                                       tree_view->priv->hadjustment->page_size);
5238           else if (tree_view->priv->hadjustment->value > focus_child->allocation.x)
5239             gtk_adjustment_set_value (tree_view->priv->hadjustment,
5240                                       focus_child->allocation.x);
5241         }
5242     }
5243
5244   return (focus_child != NULL);
5245 }
5246
5247 static gint
5248 gtk_tree_view_focus (GtkWidget        *widget,
5249                      GtkDirectionType  direction)
5250 {
5251   GtkTreeView *tree_view;
5252   GtkWidget *focus_child;
5253   GtkContainer *container;
5254
5255   g_return_val_if_fail (GTK_IS_TREE_VIEW (widget), FALSE);
5256   g_return_val_if_fail (GTK_WIDGET_VISIBLE (widget), FALSE);
5257
5258   container = GTK_CONTAINER (widget);
5259   tree_view = GTK_TREE_VIEW (widget);
5260
5261   if (!GTK_WIDGET_IS_SENSITIVE (container))
5262     return FALSE;
5263
5264   focus_child = container->focus_child;
5265
5266   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
5267   /* Case 1.  Headers currently have focus. */
5268   if (focus_child)
5269     {
5270       switch (direction)
5271         {
5272         case GTK_DIR_LEFT:
5273         case GTK_DIR_RIGHT:
5274           gtk_tree_view_header_focus (tree_view, direction);
5275           return TRUE;
5276         case GTK_DIR_TAB_BACKWARD:
5277         case GTK_DIR_UP:
5278           return FALSE;
5279         case GTK_DIR_TAB_FORWARD:
5280         case GTK_DIR_DOWN:
5281           if (tree_view->priv->tree == NULL)
5282             return FALSE;
5283           gtk_tree_view_focus_to_cursor (tree_view);
5284           return TRUE;
5285         }
5286     }
5287
5288   /* Case 2. We don't have focus at all. */
5289   if (!GTK_WIDGET_HAS_FOCUS (container))
5290     {
5291       if (tree_view->priv->tree == NULL &&
5292           (direction == GTK_DIR_TAB_BACKWARD ||
5293            direction == GTK_DIR_UP))
5294         return gtk_tree_view_header_focus (tree_view, direction);
5295       if (((direction == GTK_DIR_TAB_FORWARD) ||
5296            (direction == GTK_DIR_RIGHT) ||
5297            (direction == GTK_DIR_DOWN) ||
5298            (direction == GTK_DIR_LEFT)) &&
5299           gtk_tree_view_header_focus (tree_view, direction))
5300         return TRUE;
5301
5302       if (tree_view->priv->tree == NULL)
5303         return FALSE;
5304       gtk_tree_view_focus_to_cursor (tree_view);
5305       return TRUE;
5306     }
5307
5308   /* Case 3. We have focus already. */
5309   if (tree_view->priv->tree == NULL)
5310     return gtk_tree_view_header_focus (tree_view, direction);
5311
5312   if (direction == GTK_DIR_TAB_BACKWARD)
5313     return (gtk_tree_view_header_focus (tree_view, direction));
5314   else if (direction == GTK_DIR_TAB_FORWARD)
5315     return FALSE;
5316
5317   /* Other directions caught by the keybindings */
5318   gtk_tree_view_focus_to_cursor (tree_view);
5319   return TRUE;
5320 }
5321
5322 static void
5323 gtk_tree_view_style_set (GtkWidget *widget,
5324                          GtkStyle *previous_style)
5325 {
5326   GtkTreeView *tree_view;
5327   GList *list;
5328   GtkTreeViewColumn *column;
5329
5330   g_return_if_fail (GTK_IS_TREE_VIEW (widget));
5331
5332   tree_view = GTK_TREE_VIEW (widget);
5333
5334   gtk_widget_style_get (widget,
5335                         "expander_size", &tree_view->priv->expander_size,
5336                         NULL);
5337   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
5338
5339   for (list = tree_view->priv->columns; list; list = list->next)
5340     {
5341       column = list->data;
5342       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
5343     }
5344
5345   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
5346
5347   gtk_widget_queue_resize (widget);
5348 }
5349
5350
5351 static void
5352 gtk_tree_view_set_focus_child (GtkContainer *container,
5353                                GtkWidget    *child)
5354 {
5355   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
5356   GList *list;
5357
5358   for (list = tree_view->priv->columns; list; list = list->next)
5359     {
5360       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
5361         {
5362           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
5363           break;
5364         }
5365     }
5366
5367   (* parent_class->set_focus_child) (container, child);
5368 }
5369
5370 static void
5371 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
5372                                GtkAdjustment *hadj,
5373                                GtkAdjustment *vadj)
5374 {
5375   gboolean need_adjust = FALSE;
5376
5377   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5378
5379   if (hadj)
5380     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
5381   else
5382     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
5383   if (vadj)
5384     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
5385   else
5386     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
5387
5388   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
5389     {
5390       gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->hadjustment), tree_view);
5391       gtk_object_unref (GTK_OBJECT (tree_view->priv->hadjustment));
5392     }
5393
5394   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
5395     {
5396       gtk_signal_disconnect_by_data (GTK_OBJECT (tree_view->priv->vadjustment), tree_view);
5397       gtk_object_unref (GTK_OBJECT (tree_view->priv->vadjustment));
5398     }
5399
5400   if (tree_view->priv->hadjustment != hadj)
5401     {
5402       tree_view->priv->hadjustment = hadj;
5403       gtk_object_ref (GTK_OBJECT (tree_view->priv->hadjustment));
5404       gtk_object_sink (GTK_OBJECT (tree_view->priv->hadjustment));
5405
5406       gtk_signal_connect (GTK_OBJECT (tree_view->priv->hadjustment), "value_changed",
5407                           (GtkSignalFunc) gtk_tree_view_adjustment_changed,
5408                           tree_view);
5409       need_adjust = TRUE;
5410     }
5411
5412   if (tree_view->priv->vadjustment != vadj)
5413     {
5414       tree_view->priv->vadjustment = vadj;
5415       gtk_object_ref (GTK_OBJECT (tree_view->priv->vadjustment));
5416       gtk_object_sink (GTK_OBJECT (tree_view->priv->vadjustment));
5417
5418       gtk_signal_connect (GTK_OBJECT (tree_view->priv->vadjustment), "value_changed",
5419                           (GtkSignalFunc) gtk_tree_view_adjustment_changed,
5420                           tree_view);
5421       need_adjust = TRUE;
5422     }
5423
5424   if (need_adjust)
5425     gtk_tree_view_adjustment_changed (NULL, tree_view);
5426 }
5427
5428
5429 static gboolean
5430 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
5431                                 GtkMovementStep    step,
5432                                 gint               count)
5433 {
5434   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
5435   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
5436                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
5437                         step == GTK_MOVEMENT_DISPLAY_LINES ||
5438                         step == GTK_MOVEMENT_PAGES ||
5439                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
5440
5441   if (tree_view->priv->tree == NULL)
5442     return FALSE;
5443   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (tree_view)))
5444     return FALSE;
5445
5446   gtk_tree_view_stop_editing (tree_view, FALSE);
5447   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
5448   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5449
5450   switch (step)
5451     {
5452       /* currently we make no distinction.  When we go bi-di, we need to */
5453     case GTK_MOVEMENT_LOGICAL_POSITIONS:
5454     case GTK_MOVEMENT_VISUAL_POSITIONS:
5455       gtk_tree_view_move_cursor_left_right (tree_view, count);
5456       break;
5457     case GTK_MOVEMENT_DISPLAY_LINES:
5458       gtk_tree_view_move_cursor_up_down (tree_view, count);
5459       break;
5460     case GTK_MOVEMENT_PAGES:
5461       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
5462       break;
5463     case GTK_MOVEMENT_BUFFER_ENDS:
5464       gtk_tree_view_move_cursor_start_end (tree_view, count);
5465       break;
5466     default:
5467       g_assert_not_reached ();
5468     }
5469
5470   return TRUE;
5471 }
5472
5473 static void
5474 gtk_tree_view_put (GtkTreeView *tree_view,
5475                    GtkWidget   *child_widget,
5476                    gint         x,
5477                    gint         y,
5478                    gint         width,
5479                    gint         height)
5480 {
5481   GtkTreeViewChild *child;
5482
5483   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5484   g_return_if_fail (GTK_IS_WIDGET (child_widget));
5485
5486   child = g_new (GtkTreeViewChild, 1);
5487
5488   child->widget = child_widget;
5489   child->x = x;
5490   child->y = y;
5491   child->width = width;
5492   child->height = height;
5493
5494   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
5495
5496   if (GTK_WIDGET_REALIZED (tree_view))
5497     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
5498
5499   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
5500 }
5501
5502 void
5503 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
5504                                   GtkWidget   *widget,
5505                                   gint         x,
5506                                   gint         y,
5507                                   gint         width,
5508                                   gint         height)
5509 {
5510   GtkTreeViewChild *child = NULL;
5511   GList *list;
5512   GdkRectangle allocation;
5513
5514   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
5515   g_return_if_fail (GTK_IS_WIDGET (widget));
5516
5517   for (list = tree_view->priv->children; list; list = list->next)
5518     {
5519       if (((GtkTreeViewChild *)list->data)->widget == widget)
5520         {
5521           child = list->data;
5522           break;
5523         }
5524     }
5525   if (child == NULL)
5526     return;
5527
5528   allocation.x = child->x = x;
5529   allocation.y = child->y = y;
5530   allocation.width = child->width = width;
5531   allocation.height = child->height = height;
5532
5533   if (GTK_WIDGET_REALIZED (widget))
5534     gtk_widget_size_allocate (widget, &allocation);
5535 }
5536
5537
5538 /* TreeModel Callbacks
5539  */
5540
5541 static void
5542 gtk_tree_view_row_changed (GtkTreeModel *model,
5543                            GtkTreePath  *path,
5544                            GtkTreeIter  *iter,
5545                            gpointer      data)
5546 {
5547   GtkTreeView *tree_view = (GtkTreeView *)data;
5548   GtkRBTree *tree;
5549   GtkRBNode *node;
5550   gboolean free_path = FALSE;
5551   gint vertical_separator;
5552   GList *list;
5553
5554   g_return_if_fail (path != NULL || iter != NULL);
5555
5556   if (!GTK_WIDGET_REALIZED (tree_view))
5557     /* We can just ignore ::changed signals if we aren't realized, as we don't care about sizes
5558      */
5559     return;
5560
5561   gtk_widget_style_get (GTK_WIDGET (data), "vertical_separator", &vertical_separator, NULL);
5562
5563   if (path == NULL)
5564     {
5565       path = gtk_tree_model_get_path (model, iter);
5566       free_path = TRUE;
5567     }
5568   else if (iter == NULL)
5569     gtk_tree_model_get_iter (model, iter, path);
5570
5571   if (_gtk_tree_view_find_node (tree_view,
5572                                 path,
5573                                 &tree,
5574                                 &node))
5575     /* We aren't actually showing the node */
5576     goto done;
5577
5578   if (tree == NULL)
5579     goto done;
5580
5581   _gtk_rbtree_node_mark_invalid (tree, node);
5582   for (list = tree_view->priv->columns; list; list = list->next)
5583     {
5584       GtkTreeViewColumn *column;
5585
5586       column = list->data;
5587       if (! column->visible)
5588         continue;
5589
5590       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
5591         {
5592           _gtk_tree_view_column_cell_set_dirty (column, TRUE);
5593         }
5594     }
5595
5596  done:
5597   install_presize_handler (tree_view);
5598   if (free_path)
5599     gtk_tree_path_free (path);
5600 }
5601
5602 static void
5603 gtk_tree_view_row_inserted (GtkTreeModel *model,
5604                             GtkTreePath  *path,
5605                             GtkTreeIter  *iter,
5606                             gpointer      data)
5607 {
5608   GtkTreeView *tree_view = (GtkTreeView *) data;
5609   gint *indices;
5610   GtkRBTree *tmptree, *tree;
5611   GtkRBNode *tmpnode = NULL;
5612   gint depth;
5613   gint i = 0;
5614   gboolean free_path = FALSE;
5615
5616   g_return_if_fail (path != NULL || iter != NULL);
5617
5618   if (path == NULL)
5619     {
5620       path = gtk_tree_model_get_path (model, iter);
5621       free_path = TRUE;
5622     }
5623   else if (iter == NULL)
5624     gtk_tree_model_get_iter (model, iter, path);
5625
5626   if (tree_view->priv->tree == NULL)
5627     tree_view->priv->tree = _gtk_rbtree_new ();
5628
5629   tmptree = tree = tree_view->priv->tree;
5630
5631   /* Update all row-references */
5632   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
5633   depth = gtk_tree_path_get_depth (path);
5634   indices = gtk_tree_path_get_indices (path);
5635
5636   /* First, find the parent tree */
5637   while (i < depth - 1)
5638     {
5639       if (tmptree == NULL)
5640         {
5641           /* We aren't showing the node */
5642           goto done;
5643         }
5644
5645       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
5646       if (tmpnode == NULL)
5647         {
5648           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
5649                      "This possibly means that a GtkTreeModel inserted a child node\n" \
5650                      "before the parent was inserted.");
5651           goto done;
5652         }
5653       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
5654         {
5655           /* FIXME enforce correct behavior on model, probably */
5656           /* In theory, the model should have emitted has_child_toggled here.  We
5657            * try to catch it anyway, just to be safe, in case the model hasn't.
5658            */
5659           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
5660                                                            tree,
5661                                                            tmpnode);
5662           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
5663           gtk_tree_path_free (tmppath);
5664           goto done;
5665         }
5666
5667       tmptree = tmpnode->children;
5668       tree = tmptree;
5669       i++;
5670     }
5671
5672   if (tree == NULL)
5673     goto done;
5674
5675   /* ref the node */
5676   gtk_tree_model_ref_node (tree_view->priv->model, iter);
5677   if (indices[depth - 1] == 0)
5678     {
5679       tmpnode = _gtk_rbtree_find_count (tree, 1);
5680       _gtk_rbtree_insert_before (tree, tmpnode, 0, FALSE);
5681     }
5682   else
5683     {
5684       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
5685       _gtk_rbtree_insert_after (tree, tmpnode, 0, FALSE);
5686     }
5687
5688  done:
5689   install_presize_handler (tree_view);
5690   if (free_path)
5691     gtk_tree_path_free (path);
5692 }
5693
5694 static void
5695 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
5696                                      GtkTreePath  *path,
5697                                      GtkTreeIter  *iter,
5698                                      gpointer      data)
5699 {
5700   GtkTreeView *tree_view = (GtkTreeView *)data;
5701   GtkTreeIter real_iter;
5702   gboolean has_child;
5703   GtkRBTree *tree;
5704   GtkRBNode *node;
5705   gboolean free_path = FALSE;
5706
5707   g_return_if_fail (path != NULL || iter != NULL);
5708
5709   if (iter)
5710     real_iter = *iter;
5711
5712   if (path == NULL)
5713     {
5714       path = gtk_tree_model_get_path (model, iter);
5715       free_path = TRUE;
5716     }
5717   else if (iter == NULL)
5718     gtk_tree_model_get_iter (model, &real_iter, path);
5719
5720   if (_gtk_tree_view_find_node (tree_view,
5721                                 path,
5722                                 &tree,
5723                                 &node))
5724     /* We aren't actually showing the node */
5725     goto done;
5726
5727   if (tree == NULL)
5728     goto done;
5729
5730   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
5731   /* Sanity check.
5732    */
5733   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
5734     goto done;
5735
5736   if (has_child)
5737     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
5738   else
5739     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
5740
5741   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
5742     {
5743       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
5744       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
5745         {
5746           GList *list;
5747
5748           for (list = tree_view->priv->columns; list; list = list->next)
5749             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
5750               {
5751                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
5752                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
5753                 break;
5754               }
5755         }
5756       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
5757     }
5758   else
5759     {
5760       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5761     }
5762
5763  done:
5764   if (free_path)
5765     gtk_tree_path_free (path);
5766 }
5767
5768 static void
5769 count_children_helper (GtkRBTree *tree,
5770                        GtkRBNode *node,
5771                        gpointer   data)
5772 {
5773   if (node->children)
5774     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
5775   (*((gint *)data))++;
5776 }
5777
5778 static void
5779 gtk_tree_view_row_deleted (GtkTreeModel *model,
5780                            GtkTreePath  *path,
5781                            gpointer      data)
5782 {
5783   GtkTreeView *tree_view = (GtkTreeView *)data;
5784   GtkRBTree *tree;
5785   GtkRBNode *node;
5786   GList *list;
5787   gint selection_changed;
5788
5789   g_return_if_fail (path != NULL);
5790
5791   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
5792
5793   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5794     return;
5795
5796   if (tree == NULL)
5797     return;
5798
5799   /* Change the selection */
5800   selection_changed = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
5801
5802   for (list = tree_view->priv->columns; list; list = list->next)
5803     if (((GtkTreeViewColumn *)list->data)->visible &&
5804         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
5805       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
5806
5807   /* Ensure we don't have a dangling pointer to a dead node */
5808   ensure_unprelighted (tree_view);
5809
5810   /* Cancel editting if we've started */
5811   gtk_tree_view_stop_editing (tree_view, TRUE);
5812
5813   /* If we have a node expanded/collapsed timeout, remove it */
5814   if (tree_view->priv->expand_collapse_timeout != 0)
5815     {
5816       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
5817       tree_view->priv->expand_collapse_timeout = 0;
5818
5819       /* Reset node */
5820       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
5821       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
5822       tree_view->priv->expanded_collapsed_node = NULL;
5823     }
5824
5825   if (tree_view->priv->destroy_count_func)
5826     {
5827       gint child_count = 0;
5828       if (node->children)
5829         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
5830       (* tree_view->priv->destroy_count_func) (tree_view, path, child_count, tree_view->priv->destroy_count_data);
5831     }
5832
5833   if (tree->root->count == 1)
5834     {
5835       if (tree_view->priv->tree == tree)
5836         tree_view->priv->tree = NULL;
5837
5838       _gtk_rbtree_remove (tree);
5839     }
5840   else
5841     {
5842       _gtk_rbtree_remove_node (tree, node);
5843     }
5844
5845   if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
5846     gtk_tree_view_top_row_to_dy (tree_view);
5847   else
5848     gtk_tree_view_dy_to_top_row (tree_view);
5849
5850   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
5851
5852   if (selection_changed)
5853     g_signal_emit_by_name (G_OBJECT (tree_view->priv->selection), "changed");
5854 }
5855
5856
5857 static void
5858 gtk_tree_view_rows_reordered (GtkTreeModel *model,
5859                               GtkTreePath  *parent,
5860                               GtkTreeIter  *iter,
5861                               gint         *new_order,
5862                               gpointer      data)
5863 {
5864   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
5865   GtkRBTree *tree;
5866   GtkRBNode *node;
5867   gint len;
5868
5869   len = gtk_tree_model_iter_n_children (model, iter);
5870
5871   if (len < 2)
5872     return;
5873
5874   gtk_tree_row_reference_reordered (G_OBJECT (data),
5875                                     parent,
5876                                     iter,
5877                                     new_order);
5878
5879   if (_gtk_tree_view_find_node (tree_view,
5880                                 parent,
5881                                 &tree,
5882                                 &node))
5883     return;
5884
5885   /* We need to special case the parent path */
5886   if (tree == NULL)
5887     tree = tree_view->priv->tree;
5888   else
5889     tree = node->children;
5890
5891   if (tree == NULL)
5892     return;
5893
5894   /* we need to be unprelighted */
5895   ensure_unprelighted (tree_view);
5896
5897   _gtk_rbtree_reorder (tree, new_order, len);
5898
5899   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
5900
5901   gtk_tree_view_dy_to_top_row (tree_view);
5902 }
5903
5904
5905 /* Internal tree functions
5906  */
5907
5908
5909 static void
5910 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
5911                                      GtkRBTree         *tree,
5912                                      GtkTreeViewColumn *column,
5913                                      gint              *x1,
5914                                      gint              *x2)
5915 {
5916   GtkTreeViewColumn *tmp_column = NULL;
5917   gint total_width;
5918   GList *list;
5919
5920   if (x1)
5921     *x1 = 0;
5922
5923   if (x2)
5924     *x2 = 0;
5925
5926   total_width = 0;
5927   for (list = tree_view->priv->columns; list; list = list->next)
5928     {
5929       tmp_column = list->data;
5930
5931       if (tmp_column == column)
5932         break;
5933
5934       if (tmp_column->visible)
5935         total_width += tmp_column->width;
5936     }
5937
5938   if (tmp_column != column)
5939     {
5940       g_warning (G_STRLOC": passed-in column isn't in the tree");
5941       return;
5942     }
5943
5944   if (x1)
5945     *x1 = total_width;
5946
5947   if (x2)
5948     {
5949       if (column->visible)
5950         *x2 = total_width + column->width;
5951       else
5952         *x2 = total_width; /* width of 0 */
5953     }
5954 }
5955 static void
5956 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
5957                                 GtkRBTree   *tree,
5958                                 gint        *x1,
5959                                 gint        *x2)
5960 {
5961   gint x_offset = 0;
5962   GList *list;
5963   GtkTreeViewColumn *tmp_column = NULL;
5964   gint total_width;
5965   gboolean indent_expanders;
5966
5967   total_width = 0;
5968   for (list = tree_view->priv->columns; list; list = list->next)
5969     {
5970       tmp_column = list->data;
5971
5972       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
5973         {
5974           x_offset = total_width;
5975           break;
5976         }
5977
5978       if (tmp_column->visible)
5979         total_width += tmp_column->width;
5980     }
5981
5982   gtk_widget_style_get (GTK_WIDGET (tree_view),
5983                         "indent_expanders", &indent_expanders,
5984                         NULL);
5985
5986   if (indent_expanders)
5987     x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
5988
5989   if (x1)
5990     *x1 = x_offset;
5991
5992   if (tmp_column && tmp_column->visible)
5993     {
5994       /* +1 because x2 isn't included in the range. */
5995       if (x2)
5996         *x2 = x_offset + tree_view->priv->expander_size + 1;
5997     }
5998   else
5999     {
6000       /* return an empty range, the expander column is hidden */
6001       if (x2)
6002         *x2 = x_offset;
6003     }
6004 }
6005
6006 static void
6007 gtk_tree_view_build_tree (GtkTreeView *tree_view,
6008                           GtkRBTree   *tree,
6009                           GtkTreeIter *iter,
6010                           gint         depth,
6011                           gboolean     recurse)
6012 {
6013   GtkRBNode *temp = NULL;
6014
6015   do
6016     {
6017       gtk_tree_model_ref_node (tree_view->priv->model, iter);
6018       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
6019       if (recurse)
6020         {
6021           GtkTreeIter child;
6022
6023           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
6024             {
6025               temp->children = _gtk_rbtree_new ();
6026               temp->children->parent_tree = tree;
6027               temp->children->parent_node = temp;
6028               gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
6029             }
6030         }
6031       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
6032         {
6033           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
6034             temp->flags ^= GTK_RBNODE_IS_PARENT;
6035           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
6036         }
6037     }
6038   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
6039 }
6040
6041 /* If height is non-NULL, then we set it to be the new height.  if it's all
6042  * dirty, then height is -1.  We know we'll remeasure dirty rows, anyways.
6043  */
6044 static gboolean
6045 gtk_tree_view_discover_dirty_iter (GtkTreeView *tree_view,
6046                                    GtkTreeIter *iter,
6047                                    gint         depth,
6048                                    gint        *height,
6049                                    GtkRBNode   *node)
6050 {
6051   GtkTreeViewColumn *column;
6052   GList *list;
6053   gboolean retval = FALSE;
6054   gint tmpheight;
6055   gint horizontal_separator;
6056
6057   gtk_widget_style_get (GTK_WIDGET (tree_view),
6058                         "horizontal_separator", &horizontal_separator,
6059                         NULL);
6060
6061   if (height)
6062     *height = -1;
6063
6064   for (list = tree_view->priv->columns; list; list = list->next)
6065     {
6066       gint width;
6067       column = list->data;
6068       if (column->dirty == TRUE)
6069         continue;
6070       if (height == NULL && column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
6071         continue;
6072       if (!column->visible)
6073         continue;
6074
6075       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
6076                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
6077                                                node->children?TRUE:FALSE);
6078
6079       if (height)
6080         {
6081           gtk_tree_view_column_cell_get_size (column,
6082                                               NULL, NULL, NULL,
6083                                               &width, &tmpheight);
6084           *height = MAX (*height, tmpheight);
6085         }
6086       else
6087         {
6088           gtk_tree_view_column_cell_get_size (column,
6089                                               NULL, NULL, NULL,
6090                                               &width, NULL);
6091         }
6092
6093       if (gtk_tree_view_is_expander_column (tree_view, column) &&
6094           TREE_VIEW_DRAW_EXPANDERS (tree_view))
6095         {
6096           if (depth * tree_view->priv->expander_size + horizontal_separator + width > column->requested_width)
6097             {
6098               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6099               retval = TRUE;
6100             }
6101         }
6102       else
6103         {
6104           if (horizontal_separator + width > column->requested_width)
6105             {
6106               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
6107               retval = TRUE;
6108             }
6109         }
6110     }
6111
6112   return retval;
6113 }
6114
6115 static void
6116 gtk_tree_view_discover_dirty (GtkTreeView *tree_view,
6117                               GtkRBTree   *tree,
6118                               GtkTreeIter *iter,
6119                               gint         depth)
6120 {
6121   GtkRBNode *temp = tree->root;
6122   GtkTreeViewColumn *column;
6123   GList *list;
6124   GtkTreeIter child;
6125   gboolean is_all_dirty;
6126
6127   TREE_VIEW_INTERNAL_ASSERT_VOID (tree != NULL);
6128
6129   while (temp->left != tree->nil)
6130     temp = temp->left;
6131
6132   do
6133     {
6134       TREE_VIEW_INTERNAL_ASSERT_VOID (temp != NULL);
6135       is_all_dirty = TRUE;
6136       for (list = tree_view->priv->columns; list; list = list->next)
6137         {
6138           column = list->data;
6139           if (column->dirty == FALSE)
6140             {
6141               is_all_dirty = FALSE;
6142               break;
6143             }
6144         }
6145
6146       if (is_all_dirty)
6147         return;
6148
6149       gtk_tree_view_discover_dirty_iter (tree_view,
6150                                          iter,
6151                                          depth,
6152                                          NULL,
6153                                          temp);
6154       if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter) &&
6155           temp->children != NULL)
6156         gtk_tree_view_discover_dirty (tree_view, temp->children, &child, depth + 1);
6157       temp = _gtk_rbtree_next (tree, temp);
6158     }
6159   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
6160 }
6161
6162
6163 /* Make sure the node is visible vertically */
6164 static void
6165 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
6166                                   GtkRBTree   *tree,
6167                                   GtkRBNode   *node)
6168 {
6169   GdkRectangle cell_rect;
6170   GdkRectangle vis_rect;
6171   gint dest_y;
6172
6173   /* We process updates because we want to clear old selected items when we scroll.
6174    * if this is removed, we get a "selection streak" at the bottom. */
6175   if (GTK_WIDGET_REALIZED (tree_view))
6176     gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
6177   cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, BACKGROUND_FIRST_PIXEL (tree_view, tree, node));
6178   cell_rect.height = BACKGROUND_HEIGHT (node);
6179   gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
6180
6181   dest_y = vis_rect.y;
6182
6183   if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
6184     dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
6185   if (cell_rect.y < vis_rect.y)
6186     dest_y = cell_rect.y;
6187
6188   gtk_tree_view_scroll_to_point (tree_view, -1, dest_y);
6189 }
6190
6191 static void
6192 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
6193                                     GtkTreeViewColumn *column)
6194 {
6195   if (column == NULL)
6196     return;
6197   if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) <
6198       (column->button->allocation.x + column->button->allocation.width))
6199     gtk_adjustment_set_value (tree_view->priv->hadjustment,
6200                               column->button->allocation.x + column->button->allocation.width -
6201                               tree_view->priv->hadjustment->page_size);
6202   else if (tree_view->priv->hadjustment->value > column->button->allocation.x)
6203     gtk_adjustment_set_value (tree_view->priv->hadjustment,
6204                               column->button->allocation.x);
6205 }
6206
6207 /* This function could be more efficient.  I'll optimize it if profiling seems
6208  * to imply that it is important */
6209 GtkTreePath *
6210 _gtk_tree_view_find_path (GtkTreeView *tree_view,
6211                           GtkRBTree   *tree,
6212                           GtkRBNode   *node)
6213 {
6214   GtkTreePath *path;
6215   GtkRBTree *tmp_tree;
6216   GtkRBNode *tmp_node, *last;
6217   gint count;
6218
6219   path = gtk_tree_path_new ();
6220
6221   g_return_val_if_fail (node != NULL, path);
6222   g_return_val_if_fail (node != tree->nil, path);
6223
6224   count = 1 + node->left->count;
6225
6226   last = node;
6227   tmp_node = node->parent;
6228   tmp_tree = tree;
6229   while (tmp_tree)
6230     {
6231       while (tmp_node != tmp_tree->nil)
6232         {
6233           if (tmp_node->right == last)
6234             count += 1 + tmp_node->left->count;
6235           last = tmp_node;
6236           tmp_node = tmp_node->parent;
6237         }
6238       gtk_tree_path_prepend_index (path, count - 1);
6239       last = tmp_tree->parent_node;
6240       tmp_tree = tmp_tree->parent_tree;
6241       if (last)
6242         {
6243           count = 1 + last->left->count;
6244           tmp_node = last->parent;
6245         }
6246     }
6247   return path;
6248 }
6249
6250 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
6251  * invalid (ie. points to a node that's not in the tree), *tree and *node are
6252  * both set to NULL.
6253  */
6254 gboolean
6255 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
6256                           GtkTreePath  *path,
6257                           GtkRBTree   **tree,
6258                           GtkRBNode   **node)
6259 {
6260   GtkRBNode *tmpnode = NULL;
6261   GtkRBTree *tmptree = tree_view->priv->tree;
6262   gint *indices = gtk_tree_path_get_indices (path);
6263   gint depth = gtk_tree_path_get_depth (path);
6264   gint i = 0;
6265
6266   *node = NULL;
6267   *tree = NULL;
6268
6269   if (depth == 0 || tmptree == NULL)
6270     return FALSE;
6271   do
6272     {
6273       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
6274       ++i;
6275       if (tmpnode == NULL)
6276         {
6277           *tree = NULL;
6278           *node = NULL;
6279           return FALSE;
6280         }
6281       if (i >= depth)
6282         {
6283           *tree = tmptree;
6284           *node = tmpnode;
6285           return FALSE;
6286         }
6287       *tree = tmptree;
6288       *node = tmpnode;
6289       tmptree = tmpnode->children;
6290       if (tmptree == NULL)
6291         return TRUE;
6292     }
6293   while (1);
6294 }
6295
6296 static gboolean
6297 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
6298                                   GtkTreeViewColumn *column)
6299 {
6300   GList *list;
6301
6302   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
6303     return FALSE;
6304
6305   if (tree_view->priv->expander_column != NULL)
6306     {
6307       if (tree_view->priv->expander_column == column)
6308         return TRUE;
6309       return FALSE;
6310     }
6311   else
6312     {
6313       for (list = tree_view->priv->columns; list; list = list->next)
6314         if (((GtkTreeViewColumn *)list->data)->visible)
6315           break;
6316       if (list && list->data == column)
6317         return TRUE;
6318     }
6319   return FALSE;
6320 }
6321
6322 static void
6323 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
6324                                 guint           keyval,
6325                                 guint           modmask,
6326                                 GtkMovementStep step,
6327                                 gint            count)
6328 {
6329
6330   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
6331                                 "move_cursor", 2,
6332                                 GTK_TYPE_ENUM, step,
6333                                 GTK_TYPE_INT, count);
6334
6335   gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
6336                                 "move_cursor", 2,
6337                                 GTK_TYPE_ENUM, step,
6338                                 GTK_TYPE_INT, count);
6339
6340   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
6341    return;
6342
6343   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
6344                                 "move_cursor", 2,
6345                                 GTK_TYPE_ENUM, step,
6346                                 GTK_TYPE_INT, count);
6347
6348   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
6349                                 "move_cursor", 2,
6350                                 GTK_TYPE_ENUM, step,
6351                                 GTK_TYPE_INT, count);
6352 }
6353
6354 static gint
6355 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
6356                                  GtkTreeIter  *iter,
6357                                  GtkRBTree    *tree,
6358                                  GtkRBNode    *node)
6359 {
6360   gint retval = FALSE;
6361   do
6362     {
6363       g_return_val_if_fail (node != NULL, FALSE);
6364
6365       if (node->children)
6366         {
6367           GtkTreeIter child;
6368           GtkRBTree *new_tree;
6369           GtkRBNode *new_node;
6370
6371           new_tree = node->children;
6372           new_node = new_tree->root;
6373
6374           while (new_node && new_node->left != new_tree->nil)
6375             new_node = new_node->left;
6376
6377           g_return_val_if_fail (gtk_tree_model_iter_children (model, &child, iter), FALSE);
6378           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
6379         }
6380
6381       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
6382         retval = TRUE;
6383       gtk_tree_model_unref_node (model, iter);
6384       node = _gtk_rbtree_next (tree, node);
6385     }
6386   while (gtk_tree_model_iter_next (model, iter));
6387
6388   return retval;
6389 }
6390
6391 static gint
6392 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
6393                                               GtkRBTree   *tree)
6394 {
6395   GtkTreeIter iter;
6396   GtkTreePath *path;
6397   GtkRBNode *node;
6398   gint retval;
6399
6400   if (!tree)
6401     return FALSE;
6402
6403   node = tree->root;
6404   while (node && node->left != tree->nil)
6405     node = node->left;
6406
6407   g_return_val_if_fail (node != NULL, FALSE);
6408   path = _gtk_tree_view_find_path (tree_view, tree, node);
6409   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
6410                            &iter, path);
6411   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
6412   gtk_tree_path_free (path);
6413
6414   return retval;
6415 }
6416
6417 static void
6418 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
6419                                     GtkTreeViewColumn *column)
6420 {
6421   GtkTreeViewColumn *left_column;
6422   GtkTreeViewColumn *cur_column = NULL;
6423   GtkTreeViewColumnReorder *reorder;
6424
6425   GList *tmp_list;
6426   gint left;
6427
6428   /* We want to precalculate the motion list such that we know what column slots
6429    * are available.
6430    */
6431   left_column = NULL;
6432
6433   /* First, identify all possible drop spots */
6434   tmp_list = tree_view->priv->columns;
6435
6436   while (tmp_list)
6437     {
6438       g_assert (tmp_list);
6439
6440       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
6441       tmp_list = tmp_list->next;
6442
6443       if (cur_column->visible == FALSE)
6444         continue;
6445
6446       /* If it's not the column moving and func tells us to skip over the column, we continue. */
6447       if (left_column != column && cur_column != column &&
6448           tree_view->priv->column_drop_func &&
6449           ! (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
6450         {
6451           left_column = cur_column;
6452           continue;
6453         }
6454       reorder = g_new (GtkTreeViewColumnReorder, 1);
6455       reorder->left_column = left_column;
6456       left_column = reorder->right_column = cur_column;
6457
6458       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
6459     }
6460
6461   /* Add the last one */
6462   if (tree_view->priv->column_drop_func == NULL ||
6463       ((left_column != column) &&
6464        (* tree_view->priv->column_drop_func) (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data)))
6465     {
6466       reorder = g_new (GtkTreeViewColumnReorder, 1);
6467       reorder->left_column = left_column;
6468       reorder->right_column = NULL;
6469       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
6470     }
6471
6472   /* We quickly check to see if it even makes sense to reorder columns. */
6473   /* If there is nothing that can be moved, then we return */
6474
6475   if (tree_view->priv->column_drag_info == NULL)
6476     return;
6477
6478   /* We know there are always 2 slots possbile, as you can always return column. */
6479   /* If that's all there is, return */
6480   if (tree_view->priv->column_drag_info->next->next == NULL &&
6481       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
6482       ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column)
6483     {
6484       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
6485         g_free (tmp_list->data);
6486       g_list_free (tree_view->priv->column_drag_info);
6487       tree_view->priv->column_drag_info = NULL;
6488       return;
6489     }
6490   /* We fill in the ranges for the columns, now that we've isolated them */
6491   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
6492
6493   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
6494     {
6495       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
6496
6497       reorder->left_align = left;
6498       if (tmp_list->next != NULL)
6499         {
6500           g_assert (tmp_list->next->data);
6501           left = reorder->right_align = (reorder->right_column->button->allocation.x +
6502                                          reorder->right_column->button->allocation.width +
6503                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
6504         }
6505       else
6506         {
6507           gint width;
6508
6509           gdk_window_get_size (tree_view->priv->header_window, &width, NULL);
6510           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
6511         }
6512     }
6513 }
6514
6515 void
6516 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
6517                                   GtkTreeViewColumn *column)
6518 {
6519   GdkEvent send_event;
6520   GtkAllocation allocation;
6521   gint x, y, width, height;
6522
6523   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
6524
6525   gtk_tree_view_set_column_drag_info (tree_view, column);
6526
6527   if (tree_view->priv->column_drag_info == NULL)
6528     return;
6529
6530   if (tree_view->priv->drag_window == NULL)
6531     {
6532       GdkWindowAttr attributes;
6533       guint attributes_mask;
6534
6535       attributes.window_type = GDK_WINDOW_CHILD;
6536       attributes.wclass = GDK_INPUT_OUTPUT;
6537       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
6538       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
6539       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
6540       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
6541
6542       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
6543                                                      &attributes,
6544                                                      attributes_mask);
6545       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
6546     }
6547
6548   gdk_pointer_ungrab (GDK_CURRENT_TIME);
6549   gdk_keyboard_ungrab (GDK_CURRENT_TIME);
6550
6551   gtk_grab_remove (column->button);
6552
6553   send_event.crossing.type = GDK_LEAVE_NOTIFY;
6554   send_event.crossing.send_event = TRUE;
6555   send_event.crossing.window = column->button->window;
6556   send_event.crossing.subwindow = NULL;
6557   send_event.crossing.detail = GDK_NOTIFY_ANCESTOR;
6558   send_event.crossing.time = GDK_CURRENT_TIME;
6559
6560   gtk_propagate_event (column->button, &send_event);
6561
6562   send_event.button.type = GDK_BUTTON_RELEASE;
6563   send_event.button.window = GDK_ROOT_PARENT ();
6564   send_event.button.send_event = TRUE;
6565   send_event.button.time = GDK_CURRENT_TIME;
6566   send_event.button.x = -1;
6567   send_event.button.y = -1;
6568   send_event.button.axes = NULL;
6569   send_event.button.state = 0;
6570   send_event.button.button = 1;
6571   send_event.button.device = gdk_device_get_core_pointer ();
6572   send_event.button.x_root = 0;
6573   send_event.button.y_root = 0;
6574
6575   gtk_propagate_event (column->button, &send_event);
6576
6577   gdk_window_move_resize (tree_view->priv->drag_window,
6578                           column->button->allocation.x,
6579                           0,
6580                           column->button->allocation.width,
6581                           column->button->allocation.height);
6582
6583   /* Kids, don't try this at home */
6584   g_object_ref (column->button);
6585   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
6586   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
6587   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
6588   g_object_unref (column->button);
6589
6590   tree_view->priv->drag_column_x = column->button->allocation.x;
6591   allocation = column->button->allocation;
6592   allocation.x = 0;
6593   gtk_widget_size_allocate (column->button, &allocation);
6594   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
6595
6596   tree_view->priv->drag_column = column;
6597   gdk_window_show (tree_view->priv->drag_window);
6598
6599   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
6600   gdk_window_get_size (tree_view->priv->header_window, &width, &height);
6601
6602   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6603   while (gtk_events_pending ())
6604     gtk_main_iteration ();
6605
6606   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
6607   gdk_pointer_grab (tree_view->priv->drag_window,
6608                     FALSE,
6609                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
6610                     NULL, NULL, GDK_CURRENT_TIME);
6611   gdk_keyboard_grab (tree_view->priv->drag_window,
6612                      FALSE,
6613                      GDK_CURRENT_TIME);
6614
6615 }
6616
6617 static void
6618 gtk_tree_view_queue_draw_arrow (GtkTreeView      *tree_view,
6619                                 GtkRBTree        *tree,
6620                                 GtkRBNode        *node,
6621                                 GdkRectangle     *clip_rect)
6622 {
6623   GdkRectangle rect;
6624
6625   if (!GTK_WIDGET_REALIZED (tree_view))
6626     return;
6627
6628   rect.x = 0;
6629   rect.width = MAX (tree_view->priv->expander_size, GTK_WIDGET (tree_view)->allocation.width);
6630
6631   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
6632   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
6633
6634   if (clip_rect)
6635     {
6636       GdkRectangle new_rect;
6637
6638       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
6639
6640       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
6641     }
6642   else
6643     {
6644       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
6645     }
6646 }
6647
6648 void
6649 _gtk_tree_view_queue_draw_node (GtkTreeView  *tree_view,
6650                                 GtkRBTree    *tree,
6651                                 GtkRBNode    *node,
6652                                 GdkRectangle *clip_rect)
6653 {
6654   GdkRectangle rect;
6655
6656   if (!GTK_WIDGET_REALIZED (tree_view))
6657     return;
6658
6659   rect.x = 0;
6660   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
6661
6662   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
6663   rect.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
6664
6665   if (clip_rect)
6666     {
6667       GdkRectangle new_rect;
6668
6669       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
6670
6671       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
6672     }
6673   else
6674     {
6675       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
6676     }
6677 }
6678
6679 static void
6680 gtk_tree_view_queue_draw_path (GtkTreeView      *tree_view,
6681                                GtkTreePath      *path,
6682                                GdkRectangle     *clip_rect)
6683 {
6684   GtkRBTree *tree = NULL;
6685   GtkRBNode *node = NULL;
6686
6687   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6688
6689   if (tree)
6690     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
6691 }
6692
6693 /* x and y are the mouse position
6694  */
6695 static void
6696 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
6697                           GtkRBTree   *tree,
6698                           GtkRBNode   *node,
6699                           gint         x,
6700                           gint         y)
6701 {
6702   GdkRectangle area;
6703   GtkStateType state;
6704   GtkWidget *widget;
6705   gint x_offset = 0;
6706   gint vertical_separator;
6707   gint expander_size;
6708   GtkExpanderStyle expander_style;
6709
6710   gtk_widget_style_get (GTK_WIDGET (tree_view),
6711                         "vertical_separator", &vertical_separator,
6712                         NULL);
6713   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
6714
6715   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
6716     return;
6717
6718   widget = GTK_WIDGET (tree_view);
6719
6720   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, NULL);
6721
6722   area.x = x_offset;
6723   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
6724   area.width = expander_size + 2;
6725   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
6726
6727   if (node == tree_view->priv->button_pressed_node)
6728     {
6729       if (x >= area.x && x <= (area.x + area.width) &&
6730           y >= area.y && y <= (area.y + area.height))
6731         state = GTK_STATE_ACTIVE;
6732       else
6733         state = GTK_STATE_NORMAL;
6734     }
6735   else
6736     {
6737       if (node == tree_view->priv->prelight_node &&
6738           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
6739         state = GTK_STATE_PRELIGHT;
6740       else
6741         state = GTK_STATE_NORMAL;
6742     }
6743
6744   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
6745     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
6746   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
6747     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
6748   else if (node->children != NULL)
6749     expander_style = GTK_EXPANDER_EXPANDED;
6750   else
6751     expander_style = GTK_EXPANDER_COLLAPSED;
6752
6753   gtk_paint_expander (widget->style,
6754                       tree_view->priv->bin_window,
6755                       state,
6756                       &area,
6757                       widget,
6758                       "treeview",
6759                       area.x + area.width / 2,
6760                       area.y + area.height / 2,
6761                       expander_style);
6762 }
6763
6764 static void
6765 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
6766
6767 {
6768   GtkTreePath *cursor_path;
6769
6770   if ((tree_view->priv->tree == NULL) ||
6771       (! GTK_WIDGET_REALIZED (tree_view)))
6772     return;
6773
6774   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
6775   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6776
6777   cursor_path = NULL;
6778   if (tree_view->priv->cursor)
6779     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6780
6781   if (cursor_path == NULL)
6782     {
6783       cursor_path = gtk_tree_path_new_first ();
6784       gtk_tree_row_reference_free (tree_view->priv->cursor);
6785       tree_view->priv->cursor = NULL;
6786
6787       if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
6788         gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE);
6789       else
6790         gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
6791     }
6792   gtk_tree_path_free (cursor_path);
6793   if (tree_view->priv->focus_column == NULL)
6794     {
6795       GList *list;
6796       for (list = tree_view->priv->columns; list; list = list->next)
6797         {
6798           if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
6799             {
6800               tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
6801               break;
6802             }
6803         }
6804     }
6805 }
6806
6807 static void
6808 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
6809                                    gint         count)
6810 {
6811   GtkRBTree *cursor_tree = NULL;
6812   GtkRBNode *cursor_node = NULL;
6813   GtkRBTree *new_cursor_tree = NULL;
6814   GtkRBNode *new_cursor_node = NULL;
6815   GtkTreePath *cursor_path = NULL;
6816
6817   cursor_path = NULL;
6818   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
6819     /* FIXME: we lost the cursor; should we get the first? */
6820     return;
6821
6822   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6823   _gtk_tree_view_find_node (tree_view, cursor_path,
6824                             &cursor_tree, &cursor_node);
6825   gtk_tree_path_free (cursor_path);
6826
6827   if (cursor_tree == NULL)
6828     /* FIXME: we lost the cursor; should we get the first? */
6829     return;
6830   if (count == -1)
6831     _gtk_rbtree_prev_full (cursor_tree, cursor_node,
6832                            &new_cursor_tree, &new_cursor_node);
6833   else
6834     _gtk_rbtree_next_full (cursor_tree, cursor_node,
6835                            &new_cursor_tree, &new_cursor_node);
6836
6837   if (new_cursor_node)
6838     {
6839       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
6840       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
6841       gtk_tree_path_free (cursor_path);
6842     }
6843   else
6844     {
6845       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6846     }
6847
6848   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
6849 }
6850
6851 static void
6852 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
6853                                         gint         count)
6854 {
6855   GtkRBTree *cursor_tree = NULL;
6856   GtkRBNode *cursor_node = NULL;
6857   GtkTreePath *cursor_path = NULL;
6858   gint y;
6859   gint vertical_separator;
6860
6861   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
6862     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6863   else
6864     /* This is sorta weird.  Focus in should give us a cursor */
6865     return;
6866
6867   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical_separator", &vertical_separator, NULL);
6868   _gtk_tree_view_find_node (tree_view, cursor_path,
6869                             &cursor_tree, &cursor_node);
6870
6871   gtk_tree_path_free (cursor_path);
6872
6873   if (cursor_tree == NULL)
6874     /* FIXME: we lost the cursor.  Should we try to get one? */
6875     return;
6876   g_return_if_fail (cursor_node != NULL);
6877
6878   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
6879   y += count * tree_view->priv->vadjustment->page_size;
6880   if (count > 0)
6881     y -= MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
6882               tree_view->priv->expander_size);
6883   else if (count < 0)
6884     y += MAX (GTK_RBNODE_GET_HEIGHT (cursor_node),
6885               tree_view->priv->expander_size);
6886   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
6887
6888   _gtk_rbtree_find_offset (tree_view->priv->tree, y, &cursor_tree, &cursor_node);
6889   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
6890   g_return_if_fail (cursor_path != NULL);
6891   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE);
6892   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
6893   gtk_tree_path_free (cursor_path);
6894 }
6895
6896 static void
6897 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
6898                                       gint         count)
6899 {
6900   GtkRBTree *cursor_tree = NULL;
6901   GtkRBNode *cursor_node = NULL;
6902   GtkTreePath *cursor_path = NULL;
6903   GtkTreeViewColumn *column;
6904   GtkTreeIter iter;
6905   GList *list;
6906   gboolean found_column = FALSE;
6907
6908   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
6909     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
6910   else
6911     return;
6912
6913   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
6914   if (cursor_tree == NULL)
6915     return;
6916   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
6917     {
6918       gtk_tree_path_free (cursor_path);
6919       return;
6920     }
6921   gtk_tree_path_free (cursor_path);
6922
6923   list = tree_view->priv->columns;
6924   if (tree_view->priv->focus_column)
6925     {
6926       for (list = tree_view->priv->columns; list; list = list->next)
6927         {
6928           if (list->data == tree_view->priv->focus_column)
6929             break;
6930         }
6931     }
6932
6933   while (list)
6934     {
6935       column = list->data;
6936       if (column->visible == FALSE)
6937         goto loop_end;
6938
6939       gtk_tree_view_column_cell_set_cell_data (column,
6940                                                tree_view->priv->model,
6941                                                &iter,
6942                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
6943                                                cursor_node->children?TRUE:FALSE);
6944       if (_gtk_tree_view_column_cell_focus (column, count))
6945         {
6946           tree_view->priv->focus_column = column;
6947           found_column = TRUE;
6948           break;
6949         }
6950     loop_end:
6951       if (count == 1)
6952         list = list->next;
6953       else
6954         list = list->prev;
6955     }
6956
6957   if (found_column)
6958     {
6959       _gtk_tree_view_queue_draw_node (tree_view,
6960                                      cursor_tree,
6961                                      cursor_node,
6962                                      NULL);
6963       g_signal_emit (G_OBJECT (tree_view), tree_view_signals[CURSOR_CHANGED], 0);
6964     }
6965   gtk_tree_view_clamp_column_visible (tree_view, tree_view->priv->focus_column);
6966 }
6967
6968 static void
6969 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
6970                                      gint         count)
6971 {
6972   GtkRBTree *cursor_tree;
6973   GtkRBNode *cursor_node;
6974   GtkTreePath *path;
6975
6976   g_return_if_fail (tree_view->priv->tree != NULL);
6977
6978   if (count == -1)
6979     {
6980       cursor_tree = tree_view->priv->tree;
6981       cursor_node = cursor_tree->root;
6982       while (cursor_node && cursor_node->left != cursor_tree->nil)
6983         cursor_node = cursor_node->left;
6984     }
6985   else
6986     {
6987       cursor_tree = tree_view->priv->tree;
6988       cursor_node = cursor_tree->root;
6989       do
6990         {
6991           while (cursor_node && cursor_node->right != cursor_tree->nil)
6992             cursor_node = cursor_node->right;
6993           if (cursor_node->children == NULL)
6994             break;
6995
6996           cursor_tree = cursor_node->children;
6997           cursor_node = cursor_tree->root;
6998         }
6999       while (1);
7000     }
7001
7002   path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
7003   gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
7004   gtk_tree_path_free (path);
7005 }
7006
7007 static void
7008 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
7009 {
7010   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
7011     return;
7012   gtk_tree_selection_select_all (tree_view->priv->selection);
7013 }
7014
7015 static void
7016 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
7017 {
7018   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
7019     return;
7020   gtk_tree_selection_unselect_all (tree_view->priv->selection);
7021 }
7022
7023 static void
7024 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
7025                                       gboolean     start_editing)
7026 {
7027   GtkRBTree *cursor_tree = NULL;
7028   GtkRBNode *cursor_node = NULL;
7029   GtkTreePath *cursor_path = NULL;
7030   GdkModifierType state = 0;
7031   cursor_path = NULL;
7032
7033   if (tree_view->priv->cursor)
7034     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7035
7036   if (cursor_path == NULL)
7037     return;
7038
7039   _gtk_tree_view_find_node (tree_view, cursor_path,
7040                             &cursor_tree, &cursor_node);
7041
7042   if (cursor_tree == NULL)
7043     {
7044       gtk_tree_path_free (cursor_path);
7045       return;
7046     }
7047
7048   gtk_get_current_event_state (&state);
7049
7050   if (! (state & GDK_SHIFT_MASK) &&
7051       start_editing &&
7052       tree_view->priv->focus_column)
7053     {
7054       if (gtk_tree_view_start_editing (tree_view, cursor_path))
7055         {
7056           gtk_tree_path_free (cursor_path);
7057           return;
7058         }
7059     }
7060   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7061                                             cursor_node,
7062                                             cursor_tree,
7063                                             cursor_path,
7064                                             state);
7065
7066   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7067
7068   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7069   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
7070
7071   if (! (state & GDK_SHIFT_MASK))
7072     gtk_tree_view_row_activated (tree_view, cursor_path, tree_view->priv->focus_column);
7073
7074   gtk_tree_path_free (cursor_path);
7075 }
7076
7077 static void
7078 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
7079 {
7080   GtkRBTree *cursor_tree = NULL;
7081   GtkRBNode *cursor_node = NULL;
7082   GtkTreePath *cursor_path = NULL;
7083
7084   cursor_path = NULL;
7085   if (tree_view->priv->cursor)
7086     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7087
7088   if (cursor_path == NULL)
7089     return;
7090
7091   _gtk_tree_view_find_node (tree_view, cursor_path,
7092                             &cursor_tree, &cursor_node);
7093   if (cursor_tree == NULL)
7094     {
7095       gtk_tree_path_free (cursor_path);
7096       return;
7097     }
7098
7099   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7100                                             cursor_node,
7101                                             cursor_tree,
7102                                             cursor_path,
7103                                             GDK_CONTROL_MASK);
7104
7105   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7106
7107   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7108   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7109   gtk_tree_path_free (cursor_path);
7110 }
7111
7112
7113
7114 static void
7115 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
7116                                                gboolean     logical,
7117                                                gboolean     expand,
7118                                                gboolean     open_all)
7119 {
7120   GtkTreePath *cursor_path = NULL;
7121   GtkRBTree *tree;
7122   GtkRBNode *node;
7123
7124   cursor_path = NULL;
7125   if (tree_view->priv->cursor)
7126     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7127
7128   if (cursor_path == NULL)
7129     return;
7130
7131   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
7132     return;
7133
7134   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7135   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7136
7137   if (expand)
7138     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
7139   else
7140     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
7141
7142   gtk_tree_path_free (cursor_path);
7143 }
7144
7145 static void
7146 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
7147 {
7148   GtkRBTree *cursor_tree = NULL;
7149   GtkRBNode *cursor_node = NULL;
7150   GtkTreePath *cursor_path = NULL;
7151
7152   cursor_path = NULL;
7153   if (tree_view->priv->cursor)
7154     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
7155
7156   if (cursor_path == NULL)
7157     return;
7158
7159   _gtk_tree_view_find_node (tree_view, cursor_path,
7160                             &cursor_tree, &cursor_node);
7161   if (cursor_tree == NULL)
7162     {
7163       gtk_tree_path_free (cursor_path);
7164       return;
7165     }
7166
7167   if (cursor_tree->parent_node)
7168     {
7169       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7170       cursor_node = cursor_tree->parent_node;
7171       cursor_tree = cursor_tree->parent_tree;
7172
7173       gtk_tree_path_up (cursor_path);
7174       gtk_tree_row_reference_free (tree_view->priv->cursor);
7175       tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, cursor_path);
7176       _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
7177                                                 cursor_node,
7178                                                 cursor_tree,
7179                                                 cursor_path,
7180                                                 0);
7181     }
7182
7183   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
7184
7185   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
7186   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
7187   gtk_tree_path_free (cursor_path);
7188 }
7189
7190 static void
7191 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view)
7192 {
7193   GtkWidget *window;
7194   GtkWidget *entry;
7195   GtkWidget *search_dialog;
7196   GdkEventFocus focus_event;
7197
7198   if (tree_view->priv->enable_search == FALSE ||
7199       tree_view->priv->search_column < 0)
7200     return;
7201
7202   search_dialog = g_object_get_data (G_OBJECT (tree_view),
7203                                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY);
7204   if (search_dialog)
7205     return;
7206
7207   /* set up window */
7208   window = gtk_window_new (GTK_WINDOW_POPUP);
7209   gtk_window_set_title (GTK_WINDOW (window), "search dialog");
7210   gtk_container_set_border_width (GTK_CONTAINER (window), 3);
7211   gtk_window_set_modal (GTK_WINDOW (window), TRUE);
7212   g_signal_connect (G_OBJECT (window), "delete_event",
7213                     G_CALLBACK (gtk_tree_view_search_delete_event),
7214                     tree_view);
7215   g_signal_connect (G_OBJECT (window), "key_press_event",
7216                     G_CALLBACK (gtk_tree_view_search_key_press_event),
7217                     tree_view);
7218   g_signal_connect (G_OBJECT (window), "button_press_event",
7219                     G_CALLBACK (gtk_tree_view_search_button_press_event),
7220                     tree_view);
7221
7222   /* add entry */
7223   entry = gtk_entry_new ();
7224   gtk_widget_show (entry);
7225   g_signal_connect (G_OBJECT (entry), "changed",
7226                     G_CALLBACK (gtk_tree_view_search_init), tree_view);
7227   g_signal_connect (G_OBJECT (entry), "populate_popup",
7228                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
7229                     tree_view);
7230   gtk_container_add (GTK_CONTAINER (window), entry);
7231
7232   /* done, show it */
7233   tree_view->priv->search_dialog_position_func (tree_view, window);
7234   gtk_widget_show_all (window);
7235   gtk_widget_grab_focus (entry);
7236
7237   /* send focus-in event */
7238   focus_event.type = GDK_FOCUS_CHANGE;
7239   focus_event.in = TRUE;
7240   gtk_widget_event (entry, (GdkEvent *) &focus_event);
7241
7242   /* position window */
7243
7244   /* yes, we point to the entry's private text thing here, a bit evil */
7245   g_object_set_data (G_OBJECT (window), "gtk-tree-view-text",
7246                      (gchar *) gtk_entry_get_text (GTK_ENTRY (entry)));
7247   g_object_set_data (G_OBJECT (tree_view),
7248                      GTK_TREE_VIEW_SEARCH_DIALOG_KEY, window);
7249
7250   /* search first matching iter */
7251   gtk_tree_view_search_init (entry, tree_view);
7252 }
7253
7254 static void
7255 gtk_tree_view_real_focus_column_header (GtkTreeView *tree_view)
7256 {
7257   if (!tree_view->priv->focus_column)
7258     return;
7259
7260   gtk_widget_grab_focus (tree_view->priv->focus_column->button);
7261 }
7262
7263 /* this function returns the new width of the column being resized given
7264  * the column and x position of the cursor; the x cursor position is passed
7265  * in as a pointer and automagicly corrected if it's beyond min/max limits
7266  */
7267 static gint
7268 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
7269                                 gint       i,
7270                                 gint      *x)
7271 {
7272   GtkTreeViewColumn *column;
7273   gint width;
7274
7275   /* first translate the x position from widget->window
7276    * to clist->clist_window
7277    */
7278
7279   column = g_list_nth (tree_view->priv->columns, i)->data;
7280   width = *x - column->button->allocation.x;
7281
7282   /* Clamp down the value */
7283   if (column->min_width == -1)
7284     width = MAX (column->button->requisition.width,
7285                  width);
7286   else
7287     width = MAX (column->min_width,
7288                  width);
7289   if (column->max_width != -1)
7290     width = MIN (width, column->max_width != -1);
7291   *x = column->button->allocation.x + width;
7292
7293   return width;
7294 }
7295
7296
7297 /* Callbacks */
7298 static void
7299 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
7300                                   GtkTreeView   *tree_view)
7301 {
7302   if (GTK_WIDGET_REALIZED (tree_view))
7303     {
7304       gint dy;
7305
7306       gdk_window_move (tree_view->priv->bin_window,
7307                        - tree_view->priv->hadjustment->value,
7308                        TREE_VIEW_HEADER_HEIGHT (tree_view));
7309       gdk_window_move (tree_view->priv->header_window,
7310                        - tree_view->priv->hadjustment->value,
7311                        0);
7312       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
7313       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
7314
7315       /* update our dy and top_row */
7316       tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
7317       gtk_tree_view_dy_to_top_row (tree_view);
7318       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
7319       gdk_window_process_updates (tree_view->priv->header_window, TRUE);
7320     }
7321 }
7322
7323 \f
7324
7325 /* Public methods
7326  */
7327
7328 /**
7329  * gtk_tree_view_new:
7330  *
7331  * Creates a new #GtkTreeView widget.
7332  *
7333  * Return value: A newly created #GtkTreeView widget.
7334  **/
7335 GtkWidget *
7336 gtk_tree_view_new (void)
7337 {
7338   GtkTreeView *tree_view;
7339
7340   tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
7341
7342   return GTK_WIDGET (tree_view);
7343 }
7344
7345 /**
7346  * gtk_tree_view_new_with_model:
7347  * @model: the model.
7348  *
7349  * Creates a new #GtkTreeView widget with the model initialized to @model.
7350  *
7351  * Return value: A newly created #GtkTreeView widget.
7352  **/
7353 GtkWidget *
7354 gtk_tree_view_new_with_model (GtkTreeModel *model)
7355 {
7356   GtkTreeView *tree_view;
7357
7358   tree_view = GTK_TREE_VIEW (gtk_type_new (gtk_tree_view_get_type ()));
7359   gtk_tree_view_set_model (tree_view, model);
7360
7361   return GTK_WIDGET (tree_view);
7362 }
7363
7364 /* Public Accessors
7365  */
7366
7367 /**
7368  * gtk_tree_view_get_model:
7369  * @tree_view: a #GtkTreeView
7370  *
7371  * Returns the model the the #GtkTreeView is based on.  Returns %NULL if the
7372  * model is unset.
7373  *
7374  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
7375  **/
7376 GtkTreeModel *
7377 gtk_tree_view_get_model (GtkTreeView *tree_view)
7378 {
7379   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7380
7381   return tree_view->priv->model;
7382 }
7383
7384 /**
7385  * gtk_tree_view_set_model:
7386  * @tree_view: A #GtkTreeNode.
7387  * @model: The model.
7388  *
7389  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
7390  * set, it will remove it before setting the new model.  If @model is %NULL, then
7391  * it will unset the old model.
7392  **/
7393 void
7394 gtk_tree_view_set_model (GtkTreeView  *tree_view,
7395                          GtkTreeModel *model)
7396 {
7397   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7398
7399   if (model == tree_view->priv->model)
7400     return;
7401
7402   if (tree_view->priv->model)
7403     {
7404       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
7405
7406       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7407                                             gtk_tree_view_row_changed, tree_view);
7408       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7409                                             gtk_tree_view_row_inserted, tree_view);
7410       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7411                                             gtk_tree_view_row_has_child_toggled, tree_view);
7412       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7413                                             gtk_tree_view_row_deleted, tree_view);
7414       g_signal_handlers_disconnect_by_func (G_OBJECT (tree_view->priv->model),
7415                                             gtk_tree_view_rows_reordered, tree_view);
7416       if (tree_view->priv->tree)
7417         {
7418           _gtk_rbtree_free (tree_view->priv->tree);
7419           tree_view->priv->tree = NULL;
7420         }
7421
7422       tree_view->priv->prelight_node = NULL;
7423       tree_view->priv->prelight_tree = NULL;
7424       tree_view->priv->button_pressed_node = NULL;
7425       tree_view->priv->button_pressed_tree = NULL;
7426
7427       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
7428       tree_view->priv->drag_dest_row = NULL;
7429       gtk_tree_row_reference_free (tree_view->priv->cursor);
7430       tree_view->priv->cursor = NULL;
7431       gtk_tree_row_reference_free (tree_view->priv->anchor);
7432       tree_view->priv->anchor = NULL;
7433
7434       g_object_unref (tree_view->priv->model);
7435       tree_view->priv->search_column = -1;
7436       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
7437     }
7438
7439   tree_view->priv->model = model;
7440
7441
7442   if (tree_view->priv->model)
7443     {
7444       gint i;
7445       GtkTreePath *path;
7446       GtkTreeIter iter;
7447
7448
7449       if (tree_view->priv->search_column == -1)
7450         {
7451           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
7452             {
7453               if (gtk_tree_model_get_column_type (model, i) == G_TYPE_STRING)
7454                 {
7455                   tree_view->priv->search_column = i;
7456                   break;
7457                 }
7458             }
7459         }
7460       g_object_ref (tree_view->priv->model);
7461       g_signal_connect (tree_view->priv->model,
7462                         "row_changed",
7463                         G_CALLBACK (gtk_tree_view_row_changed),
7464                         tree_view);
7465       g_signal_connect (tree_view->priv->model,
7466                         "row_inserted",
7467                         G_CALLBACK (gtk_tree_view_row_inserted),
7468                         tree_view);
7469       g_signal_connect (tree_view->priv->model,
7470                         "row_has_child_toggled",
7471                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
7472                         tree_view);
7473       g_signal_connect (tree_view->priv->model,
7474                         "row_deleted",
7475                         G_CALLBACK (gtk_tree_view_row_deleted),
7476                         tree_view);
7477       g_signal_connect (tree_view->priv->model,
7478                         "rows_reordered",
7479                         G_CALLBACK (gtk_tree_view_rows_reordered),
7480                         tree_view);
7481
7482       path = gtk_tree_path_new_first ();
7483       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
7484         {
7485           tree_view->priv->tree = _gtk_rbtree_new ();
7486           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
7487         }
7488       gtk_tree_path_free (path);
7489
7490       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
7491       install_presize_handler (tree_view);
7492     }
7493
7494   g_object_notify (G_OBJECT (tree_view), "model");
7495
7496   if (GTK_WIDGET_REALIZED (tree_view))
7497     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7498 }
7499
7500 /**
7501  * gtk_tree_view_get_selection:
7502  * @tree_view: A #GtkTreeView.
7503  *
7504  * Gets the #GtkTreeSelection associated with @tree_view.
7505  *
7506  * Return value: A #GtkTreeSelection object.
7507  **/
7508 GtkTreeSelection *
7509 gtk_tree_view_get_selection (GtkTreeView *tree_view)
7510 {
7511   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7512
7513   return tree_view->priv->selection;
7514 }
7515
7516 /**
7517  * gtk_tree_view_get_hadjustment:
7518  * @tree_view: A #GtkTreeView
7519  *
7520  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
7521  *
7522  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
7523  * used.
7524  **/
7525 GtkAdjustment *
7526 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
7527 {
7528   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7529
7530   if (tree_view->priv->hadjustment == NULL)
7531     gtk_tree_view_set_hadjustment (tree_view, NULL);
7532
7533   return tree_view->priv->hadjustment;
7534 }
7535
7536 /**
7537  * gtk_tree_view_set_hadjustment:
7538  * @tree_view: A #GtkTreeView
7539  * @adjustment: The #GtkAdjustment to set, or %NULL
7540  *
7541  * Sets the #GtkAdjustment for the current horizontal aspect.
7542  **/
7543 void
7544 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
7545                                GtkAdjustment *adjustment)
7546 {
7547   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7548
7549   gtk_tree_view_set_adjustments (tree_view,
7550                                  adjustment,
7551                                  tree_view->priv->vadjustment);
7552
7553   g_object_notify (G_OBJECT (tree_view), "hadjustment");
7554 }
7555
7556 /**
7557  * gtk_tree_view_get_vadjustment:
7558  * @tree_view: A #GtkTreeView
7559  *
7560  * Gets the #GtkAdjustment currently being used for the vertical aspect.
7561  *
7562  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
7563  * used.
7564  **/
7565 GtkAdjustment *
7566 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
7567 {
7568   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
7569
7570   if (tree_view->priv->vadjustment == NULL)
7571     gtk_tree_view_set_vadjustment (tree_view, NULL);
7572
7573   return tree_view->priv->vadjustment;
7574 }
7575
7576 /**
7577  * gtk_tree_view_set_vadjustment:
7578  * @tree_view: A #GtkTreeView
7579  * @adjustment: The #GtkAdjustment to set, or %NULL
7580  *
7581  * Sets the #GtkAdjustment for the current vertical aspect.
7582  **/
7583 void
7584 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
7585                                GtkAdjustment *adjustment)
7586 {
7587   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7588
7589   gtk_tree_view_set_adjustments (tree_view,
7590                                  tree_view->priv->hadjustment,
7591                                  adjustment);
7592
7593   g_object_notify (G_OBJECT (tree_view), "vadjustment");
7594 }
7595
7596 /* Column and header operations */
7597
7598 /**
7599  * gtk_tree_view_get_headers_visible:
7600  * @tree_view: A #GtkTreeView.
7601  *
7602  * Returns %TRUE if the headers on the @tree_view are visible.
7603  *
7604  * Return value: Whether the headers are visible or not.
7605  **/
7606 gboolean
7607 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
7608 {
7609   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7610
7611   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
7612 }
7613
7614 /**
7615  * gtk_tree_view_set_headers_visible:
7616  * @tree_view: A #GtkTreeView.
7617  * @headers_visible: %TRUE if the headers are visible
7618  *
7619  * Sets the the visibility state of the headers.
7620  **/
7621 void
7622 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
7623                                    gboolean     headers_visible)
7624 {
7625   gint x, y;
7626   GList *list;
7627   GtkTreeViewColumn *column;
7628
7629   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7630
7631   headers_visible = !! headers_visible;
7632
7633   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
7634     return;
7635
7636   if (headers_visible)
7637     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
7638   else
7639     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
7640
7641   if (GTK_WIDGET_REALIZED (tree_view))
7642     {
7643       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
7644       if (headers_visible)
7645         {
7646           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
7647
7648           if (GTK_WIDGET_MAPPED (tree_view))
7649             gtk_tree_view_map_buttons (tree_view);
7650         }
7651       else
7652         {
7653           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
7654
7655           for (list = tree_view->priv->columns; list; list = list->next)
7656             {
7657               column = list->data;
7658               gtk_widget_unmap (column->button);
7659             }
7660           gdk_window_hide (tree_view->priv->header_window);
7661         }
7662     }
7663
7664   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
7665   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
7666   tree_view->priv->vadjustment->lower = 0;
7667   tree_view->priv->vadjustment->upper = tree_view->priv->height;
7668   gtk_signal_emit_by_name (GTK_OBJECT (tree_view->priv->vadjustment), "changed");
7669
7670   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7671
7672   g_object_notify (G_OBJECT (tree_view), "headers_visible");
7673 }
7674
7675 static void
7676 gtk_tree_view_column_autosize (GtkTreeView *tree_view,
7677                                GtkTreeViewColumn *column)
7678 {
7679   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7680   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
7681
7682   if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
7683     return;
7684
7685   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
7686
7687   do_presize_handler (tree_view);
7688   while (do_validate_rows (tree_view));
7689
7690   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7691 }
7692
7693 /**
7694  * gtk_tree_view_columns_autosize:
7695  * @tree_view: A #GtkTreeView.
7696  *
7697  * Resizes all columns to their optimal width. Only works after the
7698  * treeview has been realized.
7699  **/
7700 void
7701 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
7702 {
7703   gboolean dirty = FALSE;
7704   GList *list;
7705   GtkTreeViewColumn *column;
7706
7707   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7708
7709   for (list = tree_view->priv->columns; list; list = list->next)
7710     {
7711       column = list->data;
7712       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
7713         continue;
7714       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7715       dirty = TRUE;
7716     }
7717
7718   if (dirty)
7719     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7720 }
7721
7722 /**
7723  * gtk_tree_view_set_headers_clickable:
7724  * @tree_view: A #GtkTreeView.
7725  * @setting: %TRUE if the columns are clickable.
7726  *
7727  * Allow the column title buttons to be clicked.
7728  **/
7729 void
7730 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
7731                                      gboolean   setting)
7732 {
7733   GList *list;
7734
7735   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7736   g_return_if_fail (tree_view->priv->model != NULL);
7737
7738   for (list = tree_view->priv->columns; list; list = list->next)
7739     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
7740
7741   g_object_notify (G_OBJECT (tree_view), "headers_clickable");
7742 }
7743
7744
7745 /**
7746  * gtk_tree_view_set_rules_hint
7747  * @tree_view: a #GtkTreeView
7748  * @setting: %TRUE if the tree requires reading across rows
7749  *
7750  * This function tells GTK+ that the user interface for your
7751  * application requires users to read across tree rows and associate
7752  * cells with one another. By default, GTK+ will then render the tree
7753  * with alternating row colors. Do <emphasis>not</emphasis> use it
7754  * just because you prefer the appearance of the ruled tree; that's a
7755  * question for the theme. Some themes will draw tree rows in
7756  * alternating colors even when rules are turned off, and users who
7757  * prefer that appearance all the time can choose those themes. You
7758  * should call this function only as a <emphasis>semantic</emphasis>
7759  * hint to the theme engine that your tree makes alternating colors
7760  * useful from a functional standpoint (since it has lots of columns,
7761  * generally).
7762  *
7763  **/
7764 void
7765 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
7766                               gboolean      setting)
7767 {
7768   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7769
7770   setting = setting != FALSE;
7771
7772   if (tree_view->priv->has_rules != setting)
7773     {
7774       tree_view->priv->has_rules = setting;
7775       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
7776     }
7777
7778   g_object_notify (G_OBJECT (tree_view), "rules_hint");
7779 }
7780
7781 /**
7782  * gtk_tree_view_get_rules_hint
7783  * @tree_view: a #GtkTreeView
7784  *
7785  * Gets the setting set by gtk_tree_view_set_rules_hint().
7786  *
7787  * Return value: %TRUE if rules are useful for the user of this tree
7788  **/
7789 gboolean
7790 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
7791 {
7792   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
7793
7794   return tree_view->priv->has_rules;
7795 }
7796
7797 /* Public Column functions
7798  */
7799
7800 /**
7801  * gtk_tree_view_append_column:
7802  * @tree_view: A #GtkTreeView.
7803  * @column: The #GtkTreeViewColumn to add.
7804  *
7805  * Appends @column to the list of columns.
7806  *
7807  * Return value: The number of columns in @tree_view after appending.
7808  **/
7809 gint
7810 gtk_tree_view_append_column (GtkTreeView       *tree_view,
7811                              GtkTreeViewColumn *column)
7812 {
7813   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7814   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
7815   g_return_val_if_fail (column->tree_view == NULL, -1);
7816
7817   return gtk_tree_view_insert_column (tree_view, column, -1);
7818 }
7819
7820
7821 /**
7822  * gtk_tree_view_remove_column:
7823  * @tree_view: A #GtkTreeView.
7824  * @column: The #GtkTreeViewColumn to remove.
7825  *
7826  * Removes @column from @tree_view.
7827  *
7828  * Return value: The number of columns in @tree_view after removing.
7829  **/
7830 gint
7831 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
7832                              GtkTreeViewColumn *column)
7833 {
7834   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7835   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
7836   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
7837
7838   _gtk_tree_view_column_unset_tree_view (column);
7839
7840   if (tree_view->priv->focus_column == column)
7841     tree_view->priv->focus_column = NULL;
7842
7843   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
7844   tree_view->priv->n_columns--;
7845
7846   if (GTK_WIDGET_REALIZED (tree_view))
7847     {
7848       GList *list;
7849
7850       _gtk_tree_view_column_unrealize_button (column);
7851       for (list = tree_view->priv->columns; list; list = list->next)
7852         {
7853           GtkTreeViewColumn *tmp_column;
7854
7855           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
7856           if (tmp_column->visible)
7857             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
7858         }
7859
7860       if (tree_view->priv->n_columns == 0 &&
7861           gtk_tree_view_get_headers_visible (tree_view))
7862         gdk_window_hide (tree_view->priv->header_window);
7863
7864       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7865     }
7866
7867   g_object_unref (G_OBJECT (column));
7868   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
7869
7870   return tree_view->priv->n_columns;
7871 }
7872
7873 /**
7874  * gtk_tree_view_insert_column:
7875  * @tree_view: A #GtkTreeView.
7876  * @column: The #GtkTreeViewColumn to be inserted.
7877  * @position: The position to insert @column in.
7878  *
7879  * This inserts the @column into the @tree_view at @position.  If @position is
7880  * -1, then the column is inserted at the end.
7881  *
7882  * Return value: The number of columns in @tree_view after insertion.
7883  **/
7884 gint
7885 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
7886                              GtkTreeViewColumn *column,
7887                              gint               position)
7888 {
7889   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7890   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
7891   g_return_val_if_fail (column->tree_view == NULL, -1);
7892
7893   g_object_ref (G_OBJECT (column));
7894   gtk_object_sink (GTK_OBJECT (column));
7895
7896   if (tree_view->priv->n_columns == 0 &&
7897       GTK_WIDGET_REALIZED (tree_view) &&
7898       gtk_tree_view_get_headers_visible (tree_view))
7899     {
7900       gdk_window_show (tree_view->priv->header_window);
7901     }
7902
7903   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
7904                                             column, position);
7905   tree_view->priv->n_columns++;
7906
7907   _gtk_tree_view_column_set_tree_view (column, tree_view);
7908
7909   if (GTK_WIDGET_REALIZED (tree_view))
7910     {
7911       GList *list;
7912
7913       _gtk_tree_view_column_realize_button (column);
7914
7915       for (list = tree_view->priv->columns; list; list = list->next)
7916         {
7917           column = GTK_TREE_VIEW_COLUMN (list->data);
7918           if (column->visible)
7919             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7920         }
7921       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
7922     }
7923
7924   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
7925
7926   return tree_view->priv->n_columns;
7927 }
7928
7929 /**
7930  * gtk_tree_view_insert_column_with_attributes:
7931  * @tree_view: A #GtkTreeView
7932  * @position: The position to insert the new column in.
7933  * @title: The title to set the header to.
7934  * @cell: The #GtkCellRenderer.
7935  * @Varargs: A %NULL-terminated list of attributes.
7936  *
7937  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
7938  * @position.  If @position is -1, then the newly created column is inserted at
7939  * the end.  The column is initialized with the attributes given.
7940  *
7941  * Return value: The number of columns in @tree_view after insertion.
7942  **/
7943 gint
7944 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
7945                                              gint             position,
7946                                              gchar           *title,
7947                                              GtkCellRenderer *cell,
7948                                              ...)
7949 {
7950   GtkTreeViewColumn *column;
7951   gchar *attribute;
7952   va_list args;
7953   gint column_id;
7954
7955   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
7956
7957   column = gtk_tree_view_column_new ();
7958
7959   gtk_tree_view_column_set_title (column, title);
7960   gtk_tree_view_column_pack_start (column, cell, TRUE);
7961
7962   va_start (args, cell);
7963
7964   attribute = va_arg (args, gchar *);
7965
7966   while (attribute != NULL)
7967     {
7968       column_id = va_arg (args, gint);
7969       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
7970       attribute = va_arg (args, gchar *);
7971     }
7972
7973   va_end (args);
7974
7975   gtk_tree_view_insert_column (tree_view, column, position);
7976
7977   return tree_view->priv->n_columns;
7978 }
7979
7980 /**
7981  * gtk_tree_view_insert_column_with_data_func:
7982  * @tree_view: a #GtkTreeView
7983  * @position: Position to insert, -1 for append
7984  * @title: column title
7985  * @cell: cell renderer for column
7986  * @func: function to set attributes of cell renderer
7987  * @data: data for @func
7988  * @dnotify: destroy notifier for @data
7989  *
7990  * Convenience function that inserts a new column into the #GtkTreeView
7991  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
7992  * attributes (normally using data from the model). See also
7993  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
7994  *
7995  * Return value: number of columns in the tree view post-insert
7996  **/
7997 gint
7998 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
7999                                              gint                       position,
8000                                              gchar                     *title,
8001                                              GtkCellRenderer           *cell,
8002                                              GtkTreeCellDataFunc        func,
8003                                              gpointer                   data,
8004                                              GDestroyNotify             dnotify)
8005 {
8006   GtkTreeViewColumn *column;
8007
8008   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
8009
8010   column = gtk_tree_view_column_new ();
8011
8012   gtk_tree_view_column_set_title (column, title);
8013   gtk_tree_view_column_pack_start (column, cell, TRUE);
8014   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
8015
8016   gtk_tree_view_insert_column (tree_view, column, position);
8017
8018   return tree_view->priv->n_columns;
8019 }
8020
8021 /**
8022  * gtk_tree_view_get_column:
8023  * @tree_view: A #GtkTreeView.
8024  * @n: The position of the column, counting from 0.
8025  *
8026  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
8027  *
8028  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
8029  * range of columns.
8030  **/
8031 GtkTreeViewColumn *
8032 gtk_tree_view_get_column (GtkTreeView *tree_view,
8033                           gint         n)
8034 {
8035   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8036
8037   if (n < 0 || n >= tree_view->priv->n_columns)
8038     return NULL;
8039
8040   if (tree_view->priv->columns == NULL)
8041     return NULL;
8042
8043   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
8044 }
8045
8046 /**
8047  * gtk_tree_view_get_columns:
8048  * @tree_view: A #GtkTreeView
8049  *
8050  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
8051  * The returned list must be freed with g_list_free ().
8052  *
8053  * Return value: A list of #GtkTreeViewColumn s
8054  **/
8055 GList *
8056 gtk_tree_view_get_columns (GtkTreeView *tree_view)
8057 {
8058   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8059
8060   return g_list_copy (tree_view->priv->columns);
8061 }
8062
8063 /**
8064  * gtk_tree_view_move_column_after:
8065  * @tree_view: A #GtkTreeView
8066  * @column: The #GtkTreeViewColumn to be moved.
8067  * @base_column: The #GtkTreeViewColumn to be moved relative to, or %NULL.
8068  *
8069  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
8070  * @column is placed in the first position.
8071  **/
8072 void
8073 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
8074                                  GtkTreeViewColumn *column,
8075                                  GtkTreeViewColumn *base_column)
8076 {
8077   GList *column_list_el, *base_el = NULL;
8078
8079   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8080
8081   column_list_el = g_list_find (tree_view->priv->columns, column);
8082   g_return_if_fail (column_list_el != NULL);
8083
8084   if (base_column)
8085     {
8086       base_el = g_list_find (tree_view->priv->columns, base_column);
8087       g_return_if_fail (base_el != NULL);
8088     }
8089
8090   if (column_list_el->prev == base_el)
8091     return;
8092
8093   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
8094   if (base_el == NULL)
8095     {
8096       column_list_el->prev = NULL;
8097       column_list_el->next = tree_view->priv->columns;
8098       if (column_list_el->next)
8099         column_list_el->next->prev = column_list_el;
8100       tree_view->priv->columns = column_list_el;
8101     }
8102   else
8103     {
8104       column_list_el->prev = base_el;
8105       column_list_el->next = base_el->next;
8106       if (column_list_el->next)
8107         column_list_el->next->prev = column_list_el;
8108       base_el->next = column_list_el;
8109     }
8110
8111   if (GTK_WIDGET_REALIZED (tree_view))
8112     {
8113       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8114       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view));
8115     }
8116
8117   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[COLUMNS_CHANGED], 0);
8118 }
8119
8120 /**
8121  * gtk_tree_view_set_expander_column:
8122  * @tree_view: A #GtkTreeView
8123  * @column: %NULL, or the column to draw the expander arrow at.
8124  *
8125  * Sets the column to draw the expander arrow at. It must be in @tree_view.  If
8126  * @column is %NULL, then the expander arrow is always at the first visible
8127  * column.
8128  **/
8129 void
8130 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
8131                                    GtkTreeViewColumn *column)
8132 {
8133   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8134   if (column != NULL)
8135     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
8136
8137   if (tree_view->priv->expander_column != column)
8138     {
8139       GList *list;
8140
8141       if (column)
8142         {
8143           /* Confirm that column is in tree_view */
8144           for (list = tree_view->priv->columns; list; list = list->next)
8145             if (list->data == column)
8146               break;
8147           g_return_if_fail (list != NULL);
8148         }
8149
8150       tree_view->priv->expander_column = column;
8151       g_object_notify (G_OBJECT (tree_view), "expander_column");
8152     }
8153 }
8154
8155 /**
8156  * gtk_tree_view_get_expander_column:
8157  * @tree_view: A #GtkTreeView
8158  *
8159  * Returns the column that is the current expander column.  This
8160  * column has the expander arrow drawn next to it.
8161  *
8162  * Return value: The expander column.
8163  **/
8164 GtkTreeViewColumn *
8165 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
8166 {
8167   GList *list;
8168
8169   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
8170
8171   for (list = tree_view->priv->columns; list; list = list->next)
8172     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
8173       return (GtkTreeViewColumn *) list->data;
8174   return NULL;
8175 }
8176
8177
8178 /**
8179  * gtk_tree_view_set_column_drag_function:
8180  * @tree_view: A #GtkTreeView.
8181  * @func: A function to determine which columns are reorderable, or %NULL.
8182  * @user_data: User data to be passed to @func, or %NULL
8183  * @destroy: Destroy notifier for @user_data, or %NULL
8184  *
8185  * Sets a user function for determining where a column may be dropped when
8186  * dragged.  This function is called on every column pair in turn at the
8187  * beginning of a column drag to determine where a drop can take place.  The
8188  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
8189  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
8190  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
8191  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
8192  * @tree_view reverts to the default behavior of allowing all columns to be
8193  * dropped everywhere.
8194  **/
8195 void
8196 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
8197                                         GtkTreeViewColumnDropFunc  func,
8198                                         gpointer                   user_data,
8199                                         GtkDestroyNotify           destroy)
8200 {
8201   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8202
8203   if (tree_view->priv->column_drop_func_data_destroy)
8204     (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
8205
8206   tree_view->priv->column_drop_func = func;
8207   tree_view->priv->column_drop_func_data = user_data;
8208   tree_view->priv->column_drop_func_data_destroy = destroy;
8209 }
8210
8211 /**
8212  * gtk_tree_view_scroll_to_point:
8213  * @tree_view: a #GtkTreeView
8214  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
8215  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
8216  *
8217  * Scrolls the tree view such that the top-left corner of the visible
8218  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
8219  * in tree window coordinates.  The @tree_view must be realized before
8220  * this function is called.  If it isn't, you probably want to be
8221  * using gtk_tree_view_scroll_to_cell().
8222  *
8223  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
8224  **/
8225 void
8226 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
8227                                gint         tree_x,
8228                                gint         tree_y)
8229 {
8230   GtkAdjustment *hadj;
8231   GtkAdjustment *vadj;
8232
8233   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8234   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
8235
8236   hadj = tree_view->priv->hadjustment;
8237   vadj = tree_view->priv->vadjustment;
8238
8239   if (tree_x != -1)
8240     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
8241   if (tree_y != -1)
8242     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
8243 }
8244
8245 /**
8246  * gtk_tree_view_scroll_to_cell
8247  * @tree_view: A #GtkTreeView.
8248  * @path: The path of the row to move to, or %NULL.
8249  * @column: The #GtkTreeViewColumn to move horizontally to, or %NULL.
8250  * @use_align: whether to use alignment arguments, or %FALSE.
8251  * @row_align: The vertical alignment of the row specified by @path.
8252  * @col_align: The horizontal alignment of the column specified by @column.
8253  *
8254  * Moves the alignments of @tree_view to the position specified by @column and
8255  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
8256  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
8257  * or @path need to be non-%NULL.  @row_align determines where the row is
8258  * placed, and @col_align determines where @column is placed.  Both are expected
8259  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
8260  * right/bottom alignment, 0.5 means center.
8261  *
8262  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
8263  * tree does the minimum amount of work to scroll the cell onto the screen.
8264  * This means that the cell will be scrolled to the edge closest to it's current
8265  * position.  If the cell is currently visible on the screen, nothing is done.
8266  *
8267  * This function only works if the model is set, and @path is a valid row on the
8268  * model.  If the model changes before the @tree_view is realized, the centered
8269  * path will be modified to reflect this change.
8270  **/
8271 void
8272 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
8273                               GtkTreePath       *path,
8274                               GtkTreeViewColumn *column,
8275                               gboolean           use_align,
8276                               gfloat             row_align,
8277                               gfloat             col_align)
8278 {
8279   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8280   g_return_if_fail (tree_view->priv->model != NULL);
8281   g_return_if_fail (tree_view->priv->tree != NULL);
8282   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
8283   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
8284   g_return_if_fail (path != NULL || column != NULL);
8285
8286 #if 0
8287   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
8288            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
8289 #endif
8290   row_align = CLAMP (row_align, 0.0, 1.0);
8291   col_align = CLAMP (col_align, 0.0, 1.0);
8292
8293
8294   /* Note: Despite the benefits that come from having one code path for the
8295    * scrolling code, we short-circuit validate_visible_area's immplementation as
8296    * it is much slower than just going to the point.
8297    */
8298   if (! GTK_WIDGET_REALIZED (tree_view) ||
8299       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
8300     {
8301       if (tree_view->priv->scroll_to_path)
8302         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
8303
8304       tree_view->priv->scroll_to_path = NULL;
8305       tree_view->priv->scroll_to_column = NULL;
8306
8307       if (path)
8308         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
8309       if (column)
8310         tree_view->priv->scroll_to_column = column;
8311       tree_view->priv->scroll_to_use_align = use_align;
8312       tree_view->priv->scroll_to_row_align = row_align;
8313       tree_view->priv->scroll_to_col_align = col_align;
8314
8315       install_presize_handler (tree_view);
8316     }
8317   else
8318     {
8319       GdkRectangle cell_rect;
8320       GdkRectangle vis_rect;
8321       gint dest_x, dest_y;
8322
8323       gtk_tree_view_get_cell_area (tree_view, path, column, &cell_rect);
8324       gtk_tree_view_widget_to_tree_coords (tree_view, cell_rect.x, cell_rect.y, &(cell_rect.x), &(cell_rect.y));
8325       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
8326
8327       dest_x = vis_rect.x;
8328       dest_y = vis_rect.y;
8329
8330       if (column)
8331         {
8332           if (use_align)
8333             {
8334               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
8335             }
8336           else
8337             {
8338               if (cell_rect.x < vis_rect.x)
8339                 dest_x = cell_rect.x;
8340               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
8341                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
8342             }
8343         }
8344
8345       if (path)
8346         {
8347           if (use_align)
8348             {
8349               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
8350               dest_y = MAX (dest_y, 0);
8351             }
8352           else
8353             {
8354               if (cell_rect.y < vis_rect.y)
8355                 dest_y = cell_rect.y;
8356               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
8357                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
8358             }
8359         }
8360
8361       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
8362     }
8363 }
8364
8365 /**
8366  * gtk_tree_view_row_activated:
8367  * @tree_view: A #GtkTreeView
8368  * @path: The #GtkTreePath to be activated.
8369  * @column: The #GtkTreeViewColumn to be activated.
8370  *
8371  * Activates the cell determined by @path and @column.
8372  **/
8373 void
8374 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
8375                              GtkTreePath       *path,
8376                              GtkTreeViewColumn *column)
8377 {
8378   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8379
8380   g_signal_emit (G_OBJECT(tree_view), tree_view_signals[ROW_ACTIVATED], 0, path, column);
8381 }
8382
8383
8384 static void
8385 gtk_tree_view_expand_all_helper (GtkRBTree  *tree,
8386                                  GtkRBNode  *node,
8387                                  gpointer  data)
8388 {
8389   GtkTreeView *tree_view = data;
8390
8391   if (node->children)
8392     _gtk_rbtree_traverse (node->children,
8393                           node->children->root,
8394                           G_PRE_ORDER,
8395                           gtk_tree_view_expand_all_helper,
8396                           data);
8397   else if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT && node->children == NULL)
8398     {
8399       GtkTreePath *path;
8400       GtkTreeIter iter;
8401       GtkTreeIter child;
8402
8403       node->children = _gtk_rbtree_new ();
8404       node->children->parent_tree = tree;
8405       node->children->parent_node = node;
8406       path = _gtk_tree_view_find_path (tree_view, tree, node);
8407       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8408       gtk_tree_model_iter_children (tree_view->priv->model, &child, &iter);
8409       gtk_tree_view_build_tree (tree_view,
8410                                 node->children,
8411                                 &child,
8412                                 gtk_tree_path_get_depth (path) + 1,
8413                                 TRUE);
8414       gtk_tree_path_free (path);
8415     }
8416 }
8417
8418 /**
8419  * gtk_tree_view_expand_all:
8420  * @tree_view: A #GtkTreeView.
8421  *
8422  * Recursively expands all nodes in the @tree_view.
8423  **/
8424 void
8425 gtk_tree_view_expand_all (GtkTreeView *tree_view)
8426 {
8427   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8428
8429   if (tree_view->priv->tree == NULL)
8430     return;
8431
8432   _gtk_rbtree_traverse (tree_view->priv->tree,
8433                         tree_view->priv->tree->root,
8434                         G_PRE_ORDER,
8435                         gtk_tree_view_expand_all_helper,
8436                         tree_view);
8437 }
8438
8439 /* Timeout to animate the expander during expands and collapses */
8440 static gboolean
8441 expand_collapse_timeout (gpointer data)
8442 {
8443   GtkTreeView *tree_view = data;
8444   GtkRBNode *node;
8445   GtkRBTree *tree;
8446   gboolean expanding;
8447   gboolean redraw;
8448
8449   GDK_THREADS_ENTER ();
8450
8451   redraw = FALSE;
8452   expanding = TRUE;
8453
8454   node = tree_view->priv->expanded_collapsed_node;
8455   tree = tree_view->priv->expanded_collapsed_tree;
8456
8457   if (node->children == NULL)
8458     expanding = FALSE;
8459
8460   if (expanding)
8461     {
8462       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
8463         {
8464           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8465           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8466
8467           redraw = TRUE;
8468
8469         }
8470       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
8471         {
8472           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8473
8474           redraw = TRUE;
8475         }
8476     }
8477   else
8478     {
8479       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
8480         {
8481           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8482           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8483
8484           redraw = TRUE;
8485         }
8486       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
8487         {
8488           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8489
8490           redraw = TRUE;
8491
8492         }
8493     }
8494
8495   if (redraw)
8496     {
8497       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
8498
8499       GDK_THREADS_LEAVE ();
8500
8501       return TRUE;
8502     }
8503
8504   GDK_THREADS_LEAVE ();
8505
8506   return FALSE;
8507 }
8508
8509 /**
8510  * gtk_tree_view_collapse_all:
8511  * @tree_view: A #GtkTreeView.
8512  *
8513  * Recursively collapses all visible, expanded nodes in @tree_view.
8514  **/
8515 void
8516 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
8517 {
8518   GtkRBTree *tree;
8519   GtkRBNode *node;
8520   GtkTreePath *path;
8521   guint *indices;
8522
8523   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8524
8525   if (tree_view->priv->tree == NULL)
8526     return;
8527
8528   path = gtk_tree_path_new ();
8529   gtk_tree_path_down (path);
8530   indices = gtk_tree_path_get_indices (path);
8531
8532   tree = tree_view->priv->tree;
8533   node = tree->root;
8534   while (node && node->left != tree->nil)
8535     node = node->left;
8536
8537   while (node)
8538     {
8539       if (node->children)
8540         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
8541       indices[0]++;
8542       node = _gtk_rbtree_next (tree, node);
8543     }
8544
8545   gtk_tree_path_free (path);
8546 }
8547
8548 /* FIXME the bool return values for expand_row and collapse_row are
8549  * not analagous; they should be TRUE if the row had children and
8550  * was not already in the requested state.
8551  */
8552
8553
8554 static gboolean
8555 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
8556                                GtkTreePath *path,
8557                                GtkRBTree   *tree,
8558                                GtkRBNode   *node,
8559                                gboolean     open_all,
8560                                gboolean     animate)
8561 {
8562   GtkTreeIter iter;
8563   GtkTreeIter temp;
8564   gboolean expand;
8565
8566
8567   if (node->children)
8568     return TRUE;
8569   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
8570     return FALSE;
8571
8572   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8573   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
8574     return FALSE;
8575
8576   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
8577
8578   if (expand)
8579     return FALSE;
8580
8581   node->children = _gtk_rbtree_new ();
8582   node->children->parent_tree = tree;
8583   node->children->parent_node = node;
8584
8585   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
8586
8587   gtk_tree_view_build_tree (tree_view,
8588                             node->children,
8589                             &temp,
8590                             gtk_tree_path_get_depth (path) + 1,
8591                             open_all);
8592
8593   if (tree_view->priv->expand_collapse_timeout)
8594     {
8595       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
8596       tree_view->priv->expand_collapse_timeout = 0;
8597     }
8598
8599   if (tree_view->priv->expanded_collapsed_node != NULL)
8600     {
8601       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
8602       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8603
8604       tree_view->priv->expanded_collapsed_node = NULL;
8605     }
8606
8607   if (animate)
8608     {
8609       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
8610       tree_view->priv->expanded_collapsed_node = node;
8611       tree_view->priv->expanded_collapsed_tree = tree;
8612
8613       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8614     }
8615
8616   install_presize_handler (tree_view);
8617
8618   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[ROW_EXPANDED], 0, &iter, path);
8619   return TRUE;
8620 }
8621
8622
8623 /**
8624  * gtk_tree_view_expand_row:
8625  * @tree_view: a #GtkTreeView
8626  * @path: path to a row
8627  * @open_all: whether to recursively expand, or just expand immediate children
8628  *
8629  * Opens the row so its children are visible.
8630  *
8631  * Return value: %TRUE if the row existed and had children
8632  **/
8633 gboolean
8634 gtk_tree_view_expand_row (GtkTreeView *tree_view,
8635                           GtkTreePath *path,
8636                           gboolean     open_all)
8637 {
8638   GtkRBTree *tree;
8639   GtkRBNode *node;
8640
8641   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8642   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
8643   g_return_val_if_fail (path != NULL, FALSE);
8644
8645   if (_gtk_tree_view_find_node (tree_view,
8646                                 path,
8647                                 &tree,
8648                                 &node))
8649     return FALSE;
8650
8651   if (tree != NULL)
8652     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
8653   else
8654     return FALSE;
8655 }
8656
8657 static gboolean
8658 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
8659                                  GtkTreePath *path,
8660                                  GtkRBTree   *tree,
8661                                  GtkRBNode   *node,
8662                                  gboolean     animate)
8663 {
8664   GtkTreeIter iter;
8665   GtkTreeIter children;
8666   gboolean collapse;
8667   gint x, y;
8668   GList *list;
8669
8670   if (node->children == NULL)
8671     return FALSE;
8672
8673   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
8674
8675   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
8676
8677   if (collapse)
8678     return FALSE;
8679
8680   /* if the prelighted node is a child of us, we want to unprelight it.  We have
8681    * a chance to prelight the correct node below */
8682
8683   if (tree_view->priv->prelight_tree)
8684     {
8685       GtkRBTree *parent_tree;
8686       GtkRBNode *parent_node;
8687
8688       parent_tree = tree_view->priv->prelight_tree->parent_tree;
8689       parent_node = tree_view->priv->prelight_tree->parent_node;
8690       while (parent_tree)
8691         {
8692           if (parent_tree == tree && parent_node == node)
8693             {
8694               ensure_unprelighted (tree_view);
8695               break;
8696             }
8697           parent_node = parent_tree->parent_node;
8698           parent_tree = parent_tree->parent_tree;
8699         }
8700     }
8701
8702   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
8703
8704   for (list = tree_view->priv->columns; list; list = list->next)
8705     {
8706       GtkTreeViewColumn *column = list->data;
8707
8708       if (column->visible == FALSE)
8709         continue;
8710       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8711         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8712     }
8713
8714   if (tree_view->priv->destroy_count_func)
8715     {
8716       GtkTreePath *child_path;
8717       gint child_count = 0;
8718       child_path = gtk_tree_path_copy (path);
8719       gtk_tree_path_down (child_path);
8720       if (node->children)
8721         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8722       (* tree_view->priv->destroy_count_func) (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
8723       gtk_tree_path_free (child_path);
8724     }
8725
8726   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
8727     g_signal_emit_by_name (G_OBJECT (tree_view->priv->selection), "changed", 0);
8728   _gtk_rbtree_remove (node->children);
8729
8730   if (tree_view->priv->expand_collapse_timeout)
8731     {
8732       gtk_timeout_remove (tree_view->priv->expand_collapse_timeout);
8733       tree_view->priv->expand_collapse_timeout = 0;
8734     }
8735
8736   if (tree_view->priv->expanded_collapsed_node != NULL)
8737     {
8738       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
8739       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
8740
8741       tree_view->priv->expanded_collapsed_node = NULL;
8742     }
8743
8744   if (animate)
8745     {
8746       tree_view->priv->expand_collapse_timeout = gtk_timeout_add (50, expand_collapse_timeout, tree_view);
8747       tree_view->priv->expanded_collapsed_node = node;
8748       tree_view->priv->expanded_collapsed_tree = tree;
8749
8750       GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
8751     }
8752
8753   if (GTK_WIDGET_MAPPED (tree_view))
8754     {
8755       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8756     }
8757
8758   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
8759     {
8760       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8761
8762       if (gtk_tree_path_is_ancestor (path, cursor_path))
8763         {
8764           gtk_tree_row_reference_free (tree_view->priv->cursor);
8765           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
8766                                                                       tree_view->priv->model,
8767                                                                       path);
8768         }
8769       gtk_tree_path_free (cursor_path);
8770     }
8771
8772   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
8773       {
8774       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
8775       if (gtk_tree_path_is_ancestor (path, anchor_path))
8776         {
8777           gtk_tree_row_reference_free (tree_view->priv->anchor);
8778           tree_view->priv->anchor = NULL;
8779         }
8780       gtk_tree_path_free (anchor_path);
8781
8782     }
8783
8784   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
8785
8786   /* now that we've collapsed all rows, we want to try to set the prelight
8787    * again. To do this, we fake a motion event and send it to ourselves. */
8788
8789   if (gdk_window_at_pointer (&x, &y) == tree_view->priv->bin_window)
8790     {
8791       GdkEventMotion event;
8792       event.window = tree_view->priv->bin_window;
8793       event.x = x;
8794       event.y = y;
8795
8796       /* despite the fact this isn't a real event, I'm almost positive it will
8797        * never trigger a drag event.  maybe_drag is the only function that uses
8798        * more than just event.x and event.y. */
8799       gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
8800     }
8801   return TRUE;
8802 }
8803
8804 /**
8805  * gtk_tree_view_collapse_row:
8806  * @tree_view: a #GtkTreeView
8807  * @path: path to a row in the @tree_view
8808  *
8809  * Collapses a row (hides its child rows, if they exist).
8810  *
8811  * Return value: %TRUE if the row was collapsed.
8812  **/
8813 gboolean
8814 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
8815                             GtkTreePath *path)
8816 {
8817   GtkRBTree *tree;
8818   GtkRBNode *node;
8819
8820   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8821   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
8822   g_return_val_if_fail (path != NULL, FALSE);
8823
8824   if (_gtk_tree_view_find_node (tree_view,
8825                                 path,
8826                                 &tree,
8827                                 &node))
8828     return FALSE;
8829
8830   if (tree == NULL || node->children == NULL)
8831     return FALSE;
8832
8833   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
8834 }
8835
8836 static void
8837 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
8838                                         GtkRBTree              *tree,
8839                                         GtkTreePath            *path,
8840                                         GtkTreeViewMappingFunc  func,
8841                                         gpointer                user_data)
8842 {
8843   GtkRBNode *node;
8844
8845   if (tree == NULL || tree->root == NULL)
8846     return;
8847
8848   node = tree->root;
8849
8850   while (node && node->left != tree->nil)
8851     node = node->left;
8852
8853   while (node)
8854     {
8855       if (node->children)
8856         {
8857           gtk_tree_path_down (path);
8858           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
8859           gtk_tree_path_up (path);
8860           (* func) (tree_view, path, user_data);
8861         }
8862       gtk_tree_path_next (path);
8863       node = _gtk_rbtree_next (tree, node);
8864     }
8865 }
8866
8867 /**
8868  * gtk_tree_view_map_expanded_rows:
8869  * @tree_view: A #GtkTreeView
8870  * @func: A function to be called
8871  * @data: User data to be passed to the function.
8872  *
8873  * Calls @func on all expanded rows.
8874  **/
8875 void
8876 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
8877                                  GtkTreeViewMappingFunc  func,
8878                                  gpointer                user_data)
8879 {
8880   GtkTreePath *path;
8881
8882   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8883   g_return_if_fail (func != NULL);
8884
8885   path = gtk_tree_path_new_first ();
8886
8887   gtk_tree_view_map_expanded_rows_helper (tree_view,
8888                                           tree_view->priv->tree,
8889                                           path, func, user_data);
8890
8891   gtk_tree_path_free (path);
8892 }
8893
8894 /**
8895  * gtk_tree_view_row_expanded:
8896  * @tree_view: A #GtkTreeView.
8897  * @path: A #GtkTreePath to test expansion state.
8898  *
8899  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
8900  *
8901  * Return value: %TRUE if #path is expanded.
8902  **/
8903 gboolean
8904 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
8905                             GtkTreePath *path)
8906 {
8907   GtkRBTree *tree;
8908   GtkRBNode *node;
8909
8910   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8911   g_return_val_if_fail (path != NULL, FALSE);
8912
8913   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
8914
8915   if (node == NULL)
8916     return FALSE;
8917
8918   return (node->children != NULL);
8919 }
8920
8921 static GtkTargetEntry row_targets[] = {
8922   { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
8923 };
8924
8925
8926 /**
8927  * gtk_tree_view_get_reorderable:
8928  * @tree_view: a #GtkTreeView
8929  *
8930  * Retrieves whether the user can reorder the tree via drag-and-drop. See
8931  * gtk_tree_view_set_reorderable().
8932  *
8933  * Return value: %TRUE if the tree can be reordered.
8934  **/
8935 gboolean
8936 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
8937 {
8938   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8939
8940   return tree_view->priv->reorderable;
8941 }
8942
8943 /**
8944  * gtk_tree_view_set_reorderable:
8945  * @tree_view: A #GtkTreeView.
8946  * @reorderable: %TRUE, if the tree can be reordered.
8947  *
8948  * This function is a convenience function to allow you to reorder models that
8949  * support the #GtkDragSourceIface and the #GtkDragDestIface.  Both
8950  * #GtkTreeStore and #GtkListStore support these.  If @reorderable is %TRUE, then
8951  * the user can reorder the model by dragging and dropping rows.  The
8952  * developer can listen to these changes by connecting to the model's
8953  * signals.
8954  *
8955  * This function does not give you any degree of control over the order -- any
8956  * reorderering is allowed.  If more control is needed, you should probably
8957  * handle drag and drop manually.
8958  **/
8959 void
8960 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
8961                                gboolean     reorderable)
8962 {
8963   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8964
8965   reorderable = reorderable != FALSE;
8966
8967   if (tree_view->priv->reorderable == reorderable)
8968     return;
8969
8970   if (reorderable)
8971     {
8972       gtk_tree_view_enable_model_drag_source (tree_view,
8973                                               GDK_BUTTON1_MASK,
8974                                               row_targets,
8975                                               G_N_ELEMENTS (row_targets),
8976                                               GDK_ACTION_MOVE);
8977       gtk_tree_view_enable_model_drag_dest (tree_view,
8978                                             row_targets,
8979                                             G_N_ELEMENTS (row_targets),
8980                                             GDK_ACTION_MOVE);
8981     }
8982   else
8983     {
8984       gtk_tree_view_unset_rows_drag_source (tree_view);
8985       gtk_tree_view_unset_rows_drag_dest (tree_view);
8986     }
8987
8988   tree_view->priv->reorderable = reorderable;
8989
8990   g_object_notify (G_OBJECT (tree_view), "reorderable");
8991 }
8992
8993 static void
8994 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
8995                                GtkTreePath     *path,
8996                                gboolean         clear_and_select)
8997 {
8998   GtkRBTree *tree = NULL;
8999   GtkRBNode *node = NULL;
9000   GdkModifierType state = 0;
9001
9002   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9003     {
9004       GtkTreePath *cursor_path;
9005       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9006       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9007       gtk_tree_path_free (cursor_path);
9008     }
9009
9010   gtk_tree_row_reference_free (tree_view->priv->cursor);
9011   gtk_get_current_event_state (&state);
9012
9013   tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
9014                                                               tree_view->priv->model,
9015                                                               path);
9016   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9017   if (tree != NULL)
9018     {
9019       if (clear_and_select && !((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK))
9020         _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
9021                                                   node, tree, path,
9022                                                   state);
9023       gtk_tree_view_clamp_node_visible (tree_view, tree, node);
9024       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
9025     }
9026
9027   g_signal_emit (G_OBJECT (tree_view), tree_view_signals[CURSOR_CHANGED], 0);
9028 }
9029
9030 /**
9031  * gtk_tree_view_get_cursor:
9032  * @tree_view: A #GtkTreeView
9033  * @path: A pointer to be filled with the current cursor path, or %NULL
9034  * @focus_column: A pointer to be filled with the current focus column, or %NULL
9035  *
9036  * Fills in @path and @focus_column with the current path and focus column.  If
9037  * the cursor isn't currently set, then *@path will be %NULL.  If no column
9038  * currently has focus, then *@focus_column will be %NULL.
9039  **/
9040 void
9041 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
9042                           GtkTreePath       **path,
9043                           GtkTreeViewColumn **focus_column)
9044 {
9045   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9046
9047   if (path)
9048     {
9049       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9050         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9051       else
9052         *path = NULL;
9053     }
9054
9055   if (focus_column)
9056     {
9057       *focus_column = tree_view->priv->focus_column;
9058     }
9059 }
9060
9061 /**
9062  * gtk_tree_view_set_cursor:
9063  * @tree_view: A #GtkTreeView
9064  * @path: A #GtkTreePath
9065  * @focus_column: A #GtkTreeViewColumn, or %NULL
9066  * @start_editing: %TRUE if the specified cell should start being edited.
9067  *
9068  * Sets the current keyboard focus to be at @path, and selects it.  This is
9069  * useful when you want to focus the user's attention on a particular row.  If
9070  * @column is not %NULL, then focus is given to the column specified by it.
9071  * Additionally, if @column is specified, and @start_editing is %TRUE, then
9072  * editing should be started in the specified cell.  This function is often
9073  * followed by @gtk_widget_grab_focus (@tree_view) in order to give keyboard
9074  * focus to the widget.  Please note that editing can only happen when the
9075  * widget is realized.
9076  **/
9077 void
9078 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
9079                           GtkTreePath       *path,
9080                           GtkTreeViewColumn *focus_column,
9081                           gboolean           start_editing)
9082 {
9083   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9084   g_return_if_fail (path != NULL);
9085   if (focus_column)
9086     g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (focus_column));
9087
9088   gtk_tree_view_real_set_cursor (tree_view, path, TRUE);
9089
9090   if (focus_column && focus_column->visible)
9091     {
9092       GList *list;
9093       gboolean column_in_tree = FALSE;
9094
9095       for (list = tree_view->priv->columns; list; list = list->next)
9096         if (list->data == focus_column)
9097           {
9098             column_in_tree = TRUE;
9099             break;
9100           }
9101       g_return_if_fail (column_in_tree);
9102       tree_view->priv->focus_column = focus_column;
9103       if (start_editing)
9104         gtk_tree_view_start_editing (tree_view, path);
9105     }
9106 }
9107
9108
9109 /**
9110  * gtk_tree_view_get_bin_window:
9111  * @tree_view: A #GtkTreeView
9112  *
9113  * Returns the window that @tree_view renders to.  This is used primarily to
9114  * compare to <literal>event->window</literal> to confirm that the event on
9115  * @tree_view is on the right window.
9116  *
9117  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
9118  **/
9119 GdkWindow *
9120 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
9121 {
9122   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9123
9124   return tree_view->priv->bin_window;
9125 }
9126
9127 /**
9128  * gtk_tree_view_get_path_at_pos:
9129  * @tree_view: A #GtkTreeView.
9130  * @x: The x position to be identified.
9131  * @y: The y position to be identified.
9132  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
9133  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
9134  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
9135  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
9136  *
9137  * Finds the path at the point (@x, @y), relative to widget coordinates.  That
9138  * is, @x and @y are relative to an events coordinates. @x and @y must come
9139  * from an event on the @tree_view only where event->window ==
9140  * gtk_tree_view_get_bin (). It is primarily for things like popup menus.
9141  * If @path is non-%NULL, then it will be filled with the #GtkTreePath at that
9142  * point.  This path should be freed with gtk_tree_path_free().  If @column
9143  * is non-%NULL, then it will be filled with the column at that point.
9144  * @cell_x and @cell_y return the coordinates relative to the cell background
9145  * (i.e. the @background_area passed to gtk_cell_renderer_render()).  This
9146  * function is only meaningful if @tree_view is realized.
9147  *
9148  * Return value: %TRUE if a row exists at that coordinate.
9149  **/
9150 gboolean
9151 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
9152                                gint                x,
9153                                gint                y,
9154                                GtkTreePath       **path,
9155                                GtkTreeViewColumn **column,
9156                                gint               *cell_x,
9157                                gint               *cell_y)
9158 {
9159   GtkRBTree *tree;
9160   GtkRBNode *node;
9161   gint y_offset;
9162
9163   g_return_val_if_fail (tree_view != NULL, FALSE);
9164   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
9165
9166   if (path)
9167     *path = NULL;
9168   if (column)
9169     *column = NULL;
9170
9171   if (tree_view->priv->tree == NULL)
9172     return FALSE;
9173
9174   if (x > tree_view->priv->hadjustment->page_size)
9175     return FALSE;
9176
9177   if (x < 0 || y < 0)
9178     return FALSE;
9179
9180   if (column || cell_x)
9181     {
9182       GtkTreeViewColumn *tmp_column;
9183       GtkTreeViewColumn *last_column = NULL;
9184       GList *list;
9185       gint remaining_x = x;
9186       gboolean found = FALSE;
9187
9188       for (list = tree_view->priv->columns; list; list = list->next)
9189         {
9190           tmp_column = list->data;
9191
9192           if (tmp_column->visible == FALSE)
9193             continue;
9194
9195           last_column = tmp_column;
9196           if (remaining_x <= tmp_column->width)
9197             {
9198               found = TRUE;
9199
9200               if (column)
9201                 *column = tmp_column;
9202
9203               if (cell_x)
9204                 *cell_x = remaining_x;
9205
9206               break;
9207             }
9208           remaining_x -= tmp_column->width;
9209         }
9210
9211       if (!found)
9212         {
9213           if (column)
9214             *column = last_column;
9215
9216           if (cell_x)
9217             *cell_x = last_column->width + remaining_x;
9218         }
9219     }
9220
9221   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
9222                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
9223                                       &tree, &node);
9224
9225   if (tree == NULL)
9226     return FALSE;
9227
9228   if (cell_y)
9229     *cell_y = y_offset;
9230
9231   if (path)
9232     *path = _gtk_tree_view_find_path (tree_view, tree, node);
9233
9234   return TRUE;
9235 }
9236
9237
9238 /**
9239  * gtk_tree_view_get_cell_area:
9240  * @tree_view: a #GtkTreeView
9241  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
9242  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
9243  * @rect: rectangle to fill with cell rect
9244  *
9245  * Fills the bounding rectangle in tree window coordinates for the cell at the
9246  * row specified by @path and the column specified by @column.  If @path is
9247  * %NULL, or points to a path not currently displayed, the @y and @height fields
9248  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
9249  * fields will be filled with 0.  The sum of all cell rects does not cover the
9250  * entire tree; there are extra pixels in between rows, for example. The
9251  * returned rectangle is equivalent to the @cell_area passed to
9252  * gtk_cell_renderer_render().  This function is only valid if #tree_view is
9253  * realized.
9254  **/
9255 void
9256 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
9257                              GtkTreePath        *path,
9258                              GtkTreeViewColumn  *column,
9259                              GdkRectangle       *rect)
9260 {
9261   GtkRBTree *tree = NULL;
9262   GtkRBNode *node = NULL;
9263   gint vertical_separator;
9264   gint horizontal_separator;
9265
9266   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9267   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
9268   g_return_if_fail (rect != NULL);
9269   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
9270   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
9271
9272   gtk_widget_style_get (GTK_WIDGET (tree_view),
9273                         "vertical_separator", &vertical_separator,
9274                         "horizontal_separator", &horizontal_separator,
9275                         NULL);
9276
9277   rect->x = 0;
9278   rect->y = 0;
9279   rect->width = 0;
9280   rect->height = 0;
9281
9282   if (column)
9283     {
9284       rect->x = column->button->allocation.x + horizontal_separator/2;
9285       rect->width = column->button->allocation.width - horizontal_separator;
9286     }
9287
9288   if (path)
9289     {
9290       /* Get vertical coords */
9291       if (_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
9292           tree != NULL)
9293         return;
9294
9295       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9296       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
9297
9298       if (gtk_tree_view_is_expander_column (tree_view, column) &&
9299           TREE_VIEW_DRAW_EXPANDERS (tree_view))
9300         {
9301           gint depth = gtk_tree_path_get_depth (path) - 1;
9302
9303           rect->x += depth * tree_view->priv->expander_size;
9304           rect->width -= depth * tree_view->priv->expander_size;
9305           rect->width = MAX (rect->width, 0);
9306         }
9307     }
9308 }
9309
9310 /**
9311  * gtk_tree_view_get_background_area:
9312  * @tree_view: a #GtkTreeView
9313  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
9314  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
9315  * @rect: rectangle to fill with cell background rect
9316  *
9317  * Fills the bounding rectangle in tree window coordinates for the cell at the
9318  * row specified by @path and the column specified by @column.  If @path is
9319  * %NULL, or points to a node not found in the tree, the @y and @height fields of
9320  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
9321  * fields will be filled with 0.  The returned rectangle is equivalent to the
9322  * @background_area passed to gtk_cell_renderer_render().  These background
9323  * areas tile to cover the entire tree window (except for the area used for
9324  * header buttons). Contrast with the @cell_area, returned by
9325  * gtk_tree_view_get_cell_area(), which returns only the cell itself, excluding
9326  * surrounding borders and the tree expander area.
9327  *
9328  **/
9329 void
9330 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
9331                                    GtkTreePath        *path,
9332                                    GtkTreeViewColumn  *column,
9333                                    GdkRectangle       *rect)
9334 {
9335   GtkRBTree *tree = NULL;
9336   GtkRBNode *node = NULL;
9337
9338   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9339   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
9340   g_return_if_fail (rect != NULL);
9341
9342   rect->x = 0;
9343   rect->y = 0;
9344   rect->width = 0;
9345   rect->height = 0;
9346
9347   if (path)
9348     {
9349       /* Get vertical coords */
9350
9351       if (_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
9352           tree != NULL)
9353         return;
9354
9355       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9356
9357       rect->height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
9358     }
9359
9360   if (column)
9361     {
9362       gint x2 = 0;
9363
9364       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
9365       rect->width = x2 - rect->x;
9366     }
9367 }
9368
9369 /**
9370  * gtk_tree_view_get_visible_rect:
9371  * @tree_view: a #GtkTreeView
9372  * @visible_rect: rectangle to fill
9373  *
9374  * Fills @visible_rect with the currently-visible region of the
9375  * buffer, in tree coordinates. Convert to widget coordinates with
9376  * gtk_tree_view_tree_to_widget_coords(). Tree coordinates start at
9377  * 0,0 for row 0 of the tree, and cover the entire scrollable area of
9378  * the tree.
9379  **/
9380 void
9381 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
9382                                 GdkRectangle *visible_rect)
9383 {
9384   GtkWidget *widget;
9385
9386   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9387
9388   widget = GTK_WIDGET (tree_view);
9389
9390   if (visible_rect)
9391     {
9392       visible_rect->x = tree_view->priv->hadjustment->value;
9393       visible_rect->y = tree_view->priv->vadjustment->value;
9394       visible_rect->width = widget->allocation.width;
9395       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
9396     }
9397 }
9398
9399 /**
9400  * gtk_tree_view_widget_to_tree_coords:
9401  * @tree_view: a #GtkTreeView
9402  * @wx: widget X coordinate
9403  * @wy: widget Y coordinate
9404  * @tx: return location for tree X coordinate
9405  * @ty: return location for tree Y coordinate
9406  *
9407  * Converts widget coordinates to coordinates for the
9408  * tree window (the full scrollable area of the tree).
9409  *
9410  **/
9411 void
9412 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
9413                                      gint         wx,
9414                                      gint         wy,
9415                                      gint        *tx,
9416                                      gint        *ty)
9417 {
9418   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9419
9420   if (tx)
9421     *tx = wx + tree_view->priv->hadjustment->value;
9422   if (ty)
9423     *ty = wy + tree_view->priv->dy;
9424 }
9425
9426 /**
9427  * gtk_tree_view_tree_to_widget_coords:
9428  * @tree_view: a #GtkTreeView
9429  * @tx: tree X coordinate
9430  * @ty: tree Y coordinate
9431  * @wx: return location for widget X coordinate
9432  * @wy: return location for widget Y coordinate
9433  *
9434  * Converts tree coordinates (coordinates in full scrollable area of the tree)
9435  * to widget coordinates.
9436  *
9437  **/
9438 void
9439 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
9440                                      gint         tx,
9441                                      gint         ty,
9442                                      gint        *wx,
9443                                      gint        *wy)
9444 {
9445   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9446
9447   if (wx)
9448     *wx = tx - tree_view->priv->hadjustment->value;
9449   if (wy)
9450     *wy = ty - tree_view->priv->dy;
9451 }
9452
9453 static void
9454 unset_reorderable (GtkTreeView *tree_view)
9455 {
9456   if (tree_view->priv->reorderable)
9457     {
9458       tree_view->priv->reorderable = FALSE;
9459       g_object_notify (G_OBJECT (tree_view), "reorderable");
9460     }
9461 }
9462
9463 void
9464 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
9465                                         GdkModifierType           start_button_mask,
9466                                         const GtkTargetEntry     *targets,
9467                                         gint                      n_targets,
9468                                         GdkDragAction             actions)
9469 {
9470   TreeViewDragInfo *di;
9471
9472   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9473
9474   di = ensure_info (tree_view);
9475   clear_source_info (di);
9476
9477   di->start_button_mask = start_button_mask;
9478   di->source_target_list = gtk_target_list_new (targets, n_targets);
9479   di->source_actions = actions;
9480
9481   di->source_set = TRUE;
9482
9483   unset_reorderable (tree_view);
9484 }
9485
9486 void
9487 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
9488                                       const GtkTargetEntry     *targets,
9489                                       gint                      n_targets,
9490                                       GdkDragAction             actions)
9491 {
9492   TreeViewDragInfo *di;
9493
9494   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9495
9496   gtk_drag_dest_set (GTK_WIDGET (tree_view),
9497                      0,
9498                      NULL,
9499                      0,
9500                      actions);
9501
9502   di = ensure_info (tree_view);
9503   clear_dest_info (di);
9504
9505   if (targets)
9506     di->dest_target_list = gtk_target_list_new (targets, n_targets);
9507
9508   di->dest_set = TRUE;
9509
9510   unset_reorderable (tree_view);
9511 }
9512
9513 void
9514 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
9515 {
9516   TreeViewDragInfo *di;
9517
9518   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9519
9520   di = get_info (tree_view);
9521
9522   if (di)
9523     {
9524       if (di->source_set)
9525         {
9526           clear_source_info (di);
9527           di->source_set = FALSE;
9528         }
9529
9530       if (!di->dest_set && !di->source_set)
9531         remove_info (tree_view);
9532     }
9533
9534   unset_reorderable (tree_view);
9535 }
9536
9537 void
9538 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
9539 {
9540   TreeViewDragInfo *di;
9541
9542   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9543
9544   di = get_info (tree_view);
9545
9546   if (di)
9547     {
9548       if (di->dest_set)
9549         {
9550           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
9551           clear_dest_info (di);
9552           di->dest_set = FALSE;
9553         }
9554
9555       if (!di->dest_set && !di->source_set)
9556         remove_info (tree_view);
9557     }
9558
9559   unset_reorderable (tree_view);
9560 }
9561
9562 void
9563 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
9564                                  GtkTreePath            *path,
9565                                  GtkTreeViewDropPosition pos)
9566 {
9567   GtkTreePath *current_dest;
9568   /* Note; this function is exported to allow a custom DND
9569    * implementation, so it can't touch TreeViewDragInfo
9570    */
9571
9572   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9573
9574   current_dest = NULL;
9575
9576   if (tree_view->priv->drag_dest_row)
9577     current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
9578
9579   if (tree_view->priv->drag_dest_row)
9580     gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
9581
9582   tree_view->priv->drag_dest_pos = pos;
9583
9584   if (path)
9585     {
9586       tree_view->priv->drag_dest_row =
9587         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
9588       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
9589     }
9590   else
9591     tree_view->priv->drag_dest_row = NULL;
9592
9593   if (current_dest)
9594     {
9595       GtkRBTree *tree, *new_tree;
9596       GtkRBNode *node, *new_node;
9597
9598       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
9599       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
9600
9601       if (tree && node)
9602         {
9603           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
9604           if (new_tree && new_node)
9605             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
9606
9607           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
9608           if (new_tree && new_node)
9609             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
9610         }
9611       gtk_tree_path_free (current_dest);
9612     }
9613 }
9614
9615 void
9616 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
9617                                  GtkTreePath             **path,
9618                                  GtkTreeViewDropPosition  *pos)
9619 {
9620   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9621
9622   if (path)
9623     {
9624       if (tree_view->priv->drag_dest_row)
9625         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
9626       else
9627         *path = NULL;
9628     }
9629
9630   if (pos)
9631     *pos = tree_view->priv->drag_dest_pos;
9632 }
9633
9634 gboolean
9635 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
9636                                    gint                     drag_x,
9637                                    gint                     drag_y,
9638                                    GtkTreePath            **path,
9639                                    GtkTreeViewDropPosition *pos)
9640 {
9641   gint cell_y;
9642   gdouble offset_into_row;
9643   gdouble third;
9644   GdkRectangle cell;
9645   GtkTreeViewColumn *column = NULL;
9646   GtkTreePath *tmp_path = NULL;
9647
9648   /* Note; this function is exported to allow a custom DND
9649    * implementation, so it can't touch TreeViewDragInfo
9650    */
9651
9652   g_return_val_if_fail (tree_view != NULL, FALSE);
9653   g_return_val_if_fail (drag_x >= 0, FALSE);
9654   g_return_val_if_fail (drag_y >= 0, FALSE);
9655   g_return_val_if_fail (tree_view->priv->bin_window != NULL, FALSE);
9656
9657
9658   if (path)
9659     *path = NULL;
9660
9661   if (tree_view->priv->tree == NULL)
9662     return FALSE;
9663
9664   /* If in the top third of a row, we drop before that row; if
9665    * in the bottom third, drop after that row; if in the middle,
9666    * and the row has children, drop into the row.
9667    */
9668
9669   if (!gtk_tree_view_get_path_at_pos (tree_view,
9670                                       drag_x,
9671                                       drag_y - TREE_VIEW_HEADER_HEIGHT (tree_view),
9672                                       &tmp_path,
9673                                       &column,
9674                                       NULL,
9675                                       &cell_y))
9676     return FALSE;
9677
9678   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
9679                                      &cell);
9680
9681   offset_into_row = cell_y;
9682
9683   if (path)
9684     *path = tmp_path;
9685   else
9686     gtk_tree_path_free (tmp_path);
9687
9688   tmp_path = NULL;
9689
9690   third = cell.height / 3.0;
9691
9692   if (pos)
9693     {
9694       if (offset_into_row < third)
9695         {
9696           *pos = GTK_TREE_VIEW_DROP_BEFORE;
9697         }
9698       else if (offset_into_row < (cell.height / 2.0))
9699         {
9700           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
9701         }
9702       else if (offset_into_row < third * 2.0)
9703         {
9704           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
9705         }
9706       else
9707         {
9708           *pos = GTK_TREE_VIEW_DROP_AFTER;
9709         }
9710     }
9711
9712   return TRUE;
9713 }
9714
9715
9716
9717 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
9718 /**
9719  * gtk_tree_view_create_row_drag_icon:
9720  * @tree_view: a #GtkTreeView
9721  * @path: a #GtkTreePath in @tree_view
9722  *
9723  * Creates a #GdkPixmap representation of the row at @path.  This image is used
9724  * for a drag icon.
9725  *
9726  * Return value: a newly-allocated pixmap of the drag icon.
9727  **/
9728 GdkPixmap *
9729 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
9730                                     GtkTreePath  *path)
9731 {
9732   GtkTreeIter   iter;
9733   GtkRBTree    *tree;
9734   GtkRBNode    *node;
9735   gint cell_offset;
9736   GList *list;
9737   GdkRectangle background_area;
9738   GdkRectangle expose_area;
9739   GtkWidget *widget;
9740   gint depth;
9741   /* start drawing inside the black outline */
9742   gint x = 1, y = 1;
9743   GdkDrawable *drawable;
9744   gint bin_window_width;
9745
9746   widget = GTK_WIDGET (tree_view);
9747
9748   depth = gtk_tree_path_get_depth (path);
9749
9750   _gtk_tree_view_find_node (tree_view,
9751                             path,
9752                             &tree,
9753                             &node);
9754
9755   if (tree == NULL)
9756     return NULL;
9757
9758   if (!gtk_tree_model_get_iter (tree_view->priv->model,
9759                                 &iter,
9760                                 path))
9761     return NULL;
9762
9763   cell_offset = x;
9764
9765   background_area.y = y;
9766   background_area.height = MAX (BACKGROUND_HEIGHT (node), tree_view->priv->expander_size);
9767
9768   gdk_drawable_get_size (tree_view->priv->bin_window,
9769                          &bin_window_width, NULL);
9770
9771   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
9772                              bin_window_width + 2,
9773                              background_area.height + 2,
9774                              -1);
9775
9776   expose_area.x = 0;
9777   expose_area.y = 0;
9778   expose_area.width = bin_window_width + 2;
9779   expose_area.height = background_area.height + 2;
9780
9781   gdk_draw_rectangle (drawable,
9782                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
9783                       TRUE,
9784                       0, 0,
9785                       bin_window_width + 2,
9786                       background_area.height + 2);
9787
9788   for (list = tree_view->priv->columns; list; list = list->next)
9789     {
9790       GtkTreeViewColumn *column = list->data;
9791       GdkRectangle cell_area;
9792       gint vertical_separator;
9793
9794       if (!column->visible)
9795         continue;
9796
9797       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
9798                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
9799                                                node->children?TRUE:FALSE);
9800
9801       background_area.x = cell_offset;
9802       background_area.width = column->width;
9803
9804       cell_area = background_area;
9805
9806       gtk_widget_style_get (widget, "vertical_separator", &vertical_separator, NULL);
9807       cell_area.y += vertical_separator / 2;
9808       cell_area.height -= vertical_separator;
9809
9810       if (gtk_tree_view_is_expander_column (tree_view, column) &&
9811           TREE_VIEW_DRAW_EXPANDERS(tree_view))
9812         {
9813           cell_area.x += depth * tree_view->priv->expander_size;
9814           cell_area.width -= depth * tree_view->priv->expander_size;
9815         }
9816
9817       if (gtk_tree_view_column_cell_is_visible (column))
9818         _gtk_tree_view_column_cell_render (column,
9819                                            drawable,
9820                                            &background_area,
9821                                            &cell_area,
9822                                            &expose_area,
9823                                            0);
9824
9825       cell_offset += column->width;
9826     }
9827
9828   gdk_draw_rectangle (drawable,
9829                       widget->style->black_gc,
9830                       FALSE,
9831                       0, 0,
9832                       bin_window_width + 1,
9833                       background_area.height + 1);
9834
9835   return drawable;
9836 }
9837
9838
9839 /**
9840  * gtk_tree_view_set_destroy_count_func:
9841  * @tree_view: A #GtkTreeView
9842  * @func: Function to be called when a view row is destroyed, or %NULL
9843  * @data: User data to be passed to @func, or %NULL
9844  * @destroy: Destroy notifier for @data, or %NULL
9845  *
9846  * This function should almost never be used.  It is meant for private use by
9847  * ATK for determining the number of visible children that are removed when the
9848  * user collapses a row, or a row is deleted.
9849  **/
9850 void
9851 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
9852                                       GtkTreeDestroyCountFunc  func,
9853                                       gpointer                 data,
9854                                       GtkDestroyNotify         destroy)
9855 {
9856   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9857
9858   if (tree_view->priv->destroy_count_destroy)
9859     (* tree_view->priv->destroy_count_destroy) (tree_view->priv->destroy_count_data);
9860
9861   tree_view->priv->destroy_count_func = func;
9862   tree_view->priv->destroy_count_data = data;
9863   tree_view->priv->destroy_count_destroy = destroy;
9864 }
9865
9866
9867 /*
9868  * Interactive search
9869  */
9870
9871 /**
9872  * gtk_tree_view_set_enable_search:
9873  * @tree_view: A #GtkTreeView
9874  * @enable_search: %TRUE, if the user can search interactively
9875  *
9876  * If @enable_search is set, then the user can type in text to search through
9877  * the tree interactively.
9878  */
9879 void
9880 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
9881                                  gboolean     enable_search)
9882 {
9883   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9884
9885   enable_search = !!enable_search;
9886
9887   if (tree_view->priv->enable_search != enable_search)
9888     {
9889        tree_view->priv->enable_search = enable_search;
9890        g_object_notify (G_OBJECT (tree_view), "enable_search");
9891     }
9892 }
9893
9894 /**
9895  * gtk_tree_view_get_enable_search:
9896  * @tree_view: A #GtkTreeView
9897  *
9898  * Returns whether or not the tree allows interactive searching.
9899  *
9900  * Return value: whether or not to let the user search interactively
9901  */
9902 gboolean
9903 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
9904 {
9905   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
9906
9907   return tree_view->priv->enable_search;
9908 }
9909
9910
9911 /**
9912  * gtk_tree_view_get_search_column:
9913  * @tree_view: A #GtkTreeView
9914  *
9915  * Gets the column searched on by the interactive search code.
9916  *
9917  * Return value: the column the interactive search code searches in.
9918  */
9919 gint
9920 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
9921 {
9922   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
9923
9924   return (tree_view->priv->search_column);
9925 }
9926
9927 /**
9928  * gtk_tree_view_set_search_column:
9929  * @tree_view: A #GtkTreeView
9930  * @column: the column to search in
9931  *
9932  * Sets @column as the column where the interactive search code should search
9933  * in.  Additionally, turns on interactive searching.
9934  */
9935 void
9936 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
9937                                  gint         column)
9938 {
9939   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9940   g_return_if_fail (column >= 0);
9941
9942   if (tree_view->priv->search_column == column)
9943     return;
9944
9945   tree_view->priv->search_column = column;
9946   g_object_notify (G_OBJECT (tree_view), "search_column");
9947 }
9948
9949 /**
9950  * gtk_tree_view_get_search_equal_func:
9951  * @tree_view: A #GtkTreeView
9952  *
9953  * Returns the compare function currently in use.
9954  *
9955  * Return value: the currently used compare function for the search code.
9956  */
9957
9958 GtkTreeViewSearchEqualFunc
9959 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
9960 {
9961   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
9962
9963   return tree_view->priv->search_equal_func;
9964 }
9965
9966 /**
9967  * gtk_tree_view_set_search_equal_func:
9968  * @tree_view: A #GtkTreeView
9969  * @search_equal_func: the compare function to use during the search
9970  * @search_user_data: user data to pass to @search_equal_func, or %NULL
9971  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
9972  *
9973  * Sets the compare function for the interactive search capabilities.
9974  **/
9975 void
9976 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
9977                                      GtkTreeViewSearchEqualFunc  search_equal_func,
9978                                      gpointer                    search_user_data,
9979                                      GtkDestroyNotify            search_destroy)
9980 {
9981   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
9982   g_return_if_fail (search_equal_func !=NULL);
9983
9984   if (tree_view->priv->search_destroy)
9985     (* tree_view->priv->search_destroy) (tree_view->priv->search_user_data);
9986
9987   tree_view->priv->search_equal_func = search_equal_func;
9988   tree_view->priv->search_user_data = search_user_data;
9989   tree_view->priv->search_destroy = search_destroy;
9990   if (tree_view->priv->search_equal_func == NULL)
9991     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
9992 }
9993
9994 static void
9995 gtk_tree_view_search_dialog_destroy (GtkWidget   *search_dialog,
9996                                      GtkTreeView *tree_view)
9997 {
9998   GtkEntry *entry = (GtkEntry *)(gtk_container_get_children (GTK_CONTAINER (search_dialog)))->data;
9999   gint *selected_iter;
10000
10001   if (tree_view->priv->disable_popdown)
10002     return;
10003
10004   if (entry)
10005     {
10006       GdkEventFocus focus_event;
10007
10008       focus_event.type = GDK_FOCUS_CHANGE;
10009       focus_event.in = FALSE;
10010       gtk_widget_event (GTK_WIDGET (entry), (GdkEvent *) &focus_event);
10011     }
10012
10013   /* remove data from tree_view */
10014   g_object_set_data (G_OBJECT (tree_view), GTK_TREE_VIEW_SEARCH_DIALOG_KEY,
10015                      NULL);
10016
10017   selected_iter = g_object_get_data (G_OBJECT (search_dialog),
10018                                      "gtk-tree-view-selected-iter");
10019   if (selected_iter)
10020     g_free (selected_iter);
10021   g_object_set_data (G_OBJECT (search_dialog), "gtk-tree-view-selected-iter",
10022                      NULL);
10023
10024   gtk_widget_destroy (search_dialog);
10025 }
10026
10027 static void
10028 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
10029                                     GtkWidget   *search_dialog)
10030 {
10031   gint x, y;
10032   gint tree_x, tree_y;
10033   gint tree_width, tree_height;
10034   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
10035   GtkRequisition requisition;
10036
10037   gtk_widget_realize (search_dialog);
10038
10039   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
10040   gdk_window_get_size (tree_window,
10041                        &tree_width,
10042                        &tree_height);
10043   gtk_widget_size_request (search_dialog, &requisition);
10044
10045   if (tree_x + tree_width - requisition.width > gdk_screen_width ())
10046     x = gdk_screen_width () - requisition.width;
10047   else if (tree_x + tree_width - requisition.width < 0)
10048     x = 0;
10049   else
10050     x = tree_x + tree_width - requisition.width;
10051
10052   if (tree_y + tree_height > gdk_screen_height ())
10053     y = gdk_screen_height () - requisition.height;
10054   else if (tree_y + tree_height < 0) /* isn't really possible ... */
10055     y = 0;
10056   else
10057     y = tree_y + tree_height;
10058
10059   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
10060 }
10061
10062 static void
10063 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
10064                                       GtkMenu  *menu,
10065                                       gpointer  data)
10066 {
10067   GtkTreeView *tree_view = (GtkTreeView *)data;
10068
10069   tree_view->priv->disable_popdown = 1;
10070   g_signal_connect (G_OBJECT (menu), "hide",
10071                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
10072 }
10073
10074 static gboolean
10075 gtk_tree_view_real_search_enable_popdown (gpointer data)
10076 {
10077   GtkTreeView *tree_view = (GtkTreeView *)data;
10078
10079   GDK_THREADS_ENTER ();
10080
10081   tree_view->priv->disable_popdown = 0;
10082
10083   GDK_THREADS_LEAVE ();
10084
10085   return FALSE;
10086 }
10087
10088 static void
10089 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
10090                                      gpointer   data)
10091 {
10092   g_timeout_add (200, gtk_tree_view_real_search_enable_popdown, data);
10093 }
10094
10095 static gboolean
10096 gtk_tree_view_search_delete_event (GtkWidget *widget,
10097                                    GdkEventAny *event,
10098                                    GtkTreeView *tree_view)
10099 {
10100   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10101
10102   gtk_tree_view_search_dialog_destroy (widget, tree_view);
10103
10104   return TRUE;
10105 }
10106
10107 static gboolean
10108 gtk_tree_view_search_button_press_event (GtkWidget *widget,
10109                                          GdkEventButton *event,
10110                                          GtkTreeView *tree_view)
10111 {
10112   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10113
10114   gtk_tree_view_search_dialog_destroy (widget, tree_view);
10115
10116   return TRUE;
10117 }
10118
10119 static gboolean
10120 gtk_tree_view_search_key_press_event (GtkWidget *widget,
10121                                       GdkEventKey *event,
10122                                       GtkTreeView *tree_view)
10123 {
10124   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
10125   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10126
10127   /* close window */
10128   if (event->keyval == GDK_Escape ||
10129       event->keyval == GDK_Return ||
10130       event->keyval == GDK_Tab)
10131     {
10132       gtk_tree_view_search_dialog_destroy (widget, tree_view);
10133       return TRUE;
10134     }
10135
10136   /* select previous matching iter */
10137   if (event->keyval == GDK_Up)
10138     {
10139       gtk_tree_view_search_move (widget, tree_view, TRUE);
10140       return TRUE;
10141     }
10142
10143   /* select next matching iter */
10144   if (event->keyval == GDK_Down)
10145     {
10146       gtk_tree_view_search_move (widget, tree_view, FALSE);
10147       return TRUE;
10148     }
10149
10150   return FALSE;
10151 }
10152
10153 static void
10154 gtk_tree_view_search_move (GtkWidget   *window,
10155                            GtkTreeView *tree_view,
10156                            gboolean     up)
10157 {
10158   gboolean ret;
10159   gint *selected_iter;
10160   gint len;
10161   gint count = 0;
10162   gchar *text;
10163   GtkTreeIter iter;
10164   GtkTreeModel *model;
10165   GtkTreeSelection *selection;
10166
10167   text = g_object_get_data (G_OBJECT (window), "gtk-tree-view-text");
10168   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
10169
10170   g_return_if_fail (text != NULL);
10171
10172   if (!selected_iter || (up && *selected_iter == 1))
10173     return;
10174
10175   len = strlen (text);
10176
10177   if (len < 1)
10178     return;
10179
10180   model = gtk_tree_view_get_model (tree_view);
10181   selection = gtk_tree_view_get_selection (tree_view);
10182
10183   /* search */
10184   gtk_tree_selection_unselect_all (selection);
10185   gtk_tree_model_get_iter_first (model, &iter);
10186
10187   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
10188                                    &count, up?((*selected_iter) - 1):((*selected_iter + 1)));
10189
10190   if (ret)
10191     {
10192       /* found */
10193       *selected_iter += up?(-1):(1);
10194     }
10195   else
10196     {
10197       /* return to old iter */
10198       count = 0;
10199       gtk_tree_model_get_iter_first (model, &iter);
10200       gtk_tree_view_search_iter (model, selection,
10201                                  &iter, text,
10202                                  &count, *selected_iter);
10203     }
10204 }
10205
10206 static gboolean
10207 gtk_tree_view_search_equal_func (GtkTreeModel *model,
10208                                  gint          column,
10209                                  const gchar  *key,
10210                                  GtkTreeIter  *iter,
10211                                  gpointer      search_data)
10212 {
10213   gboolean retval = TRUE;
10214   gchar *normalized_string;
10215   gchar *normalized_key;
10216   gchar *case_normalized_string;
10217   gchar *case_normalized_key;
10218   GValue value = {0,};
10219   gint key_len;
10220
10221   gtk_tree_model_get_value (model, iter, column, &value);
10222   normalized_string = g_utf8_normalize (g_value_get_string (&value), -1, G_NORMALIZE_ALL);
10223   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
10224   case_normalized_string = g_utf8_casefold (normalized_string, -1);
10225   case_normalized_key = g_utf8_casefold (normalized_key, -1);
10226
10227   key_len = strlen (case_normalized_key);
10228
10229   if (!strncmp (case_normalized_key, case_normalized_string, key_len))
10230     retval = FALSE;
10231
10232   g_value_unset (&value);
10233   g_free (normalized_key);
10234   g_free (normalized_string);
10235   g_free (case_normalized_key);
10236   g_free (case_normalized_string);
10237
10238   return retval;
10239 }
10240
10241 static gboolean
10242 gtk_tree_view_search_iter (GtkTreeModel     *model,
10243                            GtkTreeSelection *selection,
10244                            GtkTreeIter      *iter,
10245                            const gchar      *text,
10246                            gint             *count,
10247                            gint              n)
10248 {
10249   GtkRBTree *tree = NULL;
10250   GtkRBNode *node = NULL;
10251   GtkTreePath *path;
10252
10253   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
10254   GtkTreeViewColumn *column =
10255     gtk_tree_view_get_column (tree_view, tree_view->priv->search_column);
10256
10257   path = gtk_tree_model_get_path (model, iter);
10258   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
10259
10260   do
10261     {
10262       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
10263         {
10264           (*count)++;
10265           if (*count == n)
10266             {
10267               gtk_tree_view_scroll_to_cell (tree_view, path, column,
10268                                             TRUE, 0.5, 0.5);
10269               gtk_tree_selection_select_iter (selection, iter);
10270               gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
10271
10272               if (path)
10273                 gtk_tree_path_free (path);
10274
10275               return TRUE;
10276             }
10277         }
10278
10279       if (node->children)
10280         {
10281           gboolean has_child;
10282           GtkTreeIter tmp;
10283
10284           tree = node->children;
10285           node = tree->root;
10286
10287           while (node->left != tree->nil)
10288             node = node->left;
10289
10290           tmp = *iter;
10291           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
10292           gtk_tree_path_down (path);
10293
10294           /* sanity check */
10295           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
10296         }
10297       else
10298         {
10299           gboolean done = FALSE;
10300
10301           do
10302             {
10303               node = _gtk_rbtree_next (tree, node);
10304
10305               if (node)
10306                 {
10307                   gboolean has_next;
10308
10309                   has_next = gtk_tree_model_iter_next (model, iter);
10310
10311                   done = TRUE;
10312                   gtk_tree_path_next (path);
10313
10314                   /* sanity check */
10315                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
10316                 }
10317               else
10318                 {
10319                   gboolean has_parent;
10320                   GtkTreeIter tmp_iter = *iter;
10321
10322                   node = tree->parent_node;
10323                   tree = tree->parent_tree;
10324
10325                   if (!tree)
10326                     {
10327                       if (path)
10328                         gtk_tree_path_free (path);
10329
10330                       /* we've run out of tree, done with this func */
10331                       return FALSE;
10332                     }
10333
10334                   has_parent = gtk_tree_model_iter_parent (model,
10335                                                            iter,
10336                                                            &tmp_iter);
10337                   gtk_tree_path_up (path);
10338
10339                   /* sanity check */
10340                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
10341                 }
10342             }
10343           while (!done);
10344         }
10345     }
10346   while (1);
10347
10348   if (path)
10349     gtk_tree_path_free (path);
10350
10351   return FALSE;
10352 }
10353
10354 static void
10355 gtk_tree_view_search_init (GtkWidget   *entry,
10356                            GtkTreeView *tree_view)
10357 {
10358   gint ret;
10359   gint *selected_iter;
10360   gint len;
10361   gint count = 0;
10362   const gchar *text;
10363   GtkWidget *window;
10364   GtkTreeIter iter;
10365   GtkTreeModel *model;
10366   GtkTreeSelection *selection;
10367
10368   g_return_if_fail (GTK_IS_ENTRY (entry));
10369   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10370
10371   window = gtk_widget_get_parent (entry);
10372   text = gtk_entry_get_text (GTK_ENTRY (entry));
10373   len = strlen (text);
10374   model = gtk_tree_view_get_model (tree_view);
10375   selection = gtk_tree_view_get_selection (tree_view);
10376
10377   /* search */
10378   gtk_tree_selection_unselect_all (selection);
10379   selected_iter = g_object_get_data (G_OBJECT (window), "gtk-tree-view-selected-iter");
10380   if (selected_iter)
10381     g_free (selected_iter);
10382   g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter", NULL);
10383
10384   if (len < 1)
10385     return;
10386
10387   gtk_tree_model_get_iter_first (model, &iter);
10388
10389   ret = gtk_tree_view_search_iter (model, selection,
10390                                    &iter, text,
10391                                    &count, 1);
10392
10393   if (ret)
10394     {
10395       selected_iter = g_malloc (sizeof (int));
10396       *selected_iter = 1;
10397       g_object_set_data (G_OBJECT (window), "gtk-tree-view-selected-iter",
10398                          selected_iter);
10399     }
10400 }
10401
10402 static void
10403 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
10404                              GtkTreeView     *tree_view)
10405 {
10406   if (tree_view->priv->edited_column == NULL)
10407     return;
10408
10409   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
10410   tree_view->priv->edited_column = NULL;
10411
10412   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10413
10414   gtk_container_remove (GTK_CONTAINER (tree_view),
10415                         GTK_WIDGET (cell_editable));
10416 }
10417
10418 static gboolean
10419 gtk_tree_view_start_editing (GtkTreeView *tree_view,
10420                              GtkTreePath *cursor_path)
10421 {
10422   GtkTreeIter iter;
10423   GdkRectangle background_area;
10424   GdkRectangle cell_area;
10425   GtkCellEditable *editable_widget = NULL;
10426   gchar *path_string;
10427   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
10428   gint retval = FALSE;
10429   GtkRBTree *cursor_tree;
10430   GtkRBNode *cursor_node;
10431
10432   g_assert (tree_view->priv->focus_column);
10433
10434   if (! GTK_WIDGET_REALIZED (tree_view))
10435     return FALSE;
10436
10437   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
10438       cursor_node == NULL)
10439     return FALSE;
10440
10441   path_string = gtk_tree_path_to_string (cursor_path);
10442   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
10443
10444   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
10445
10446   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
10447                                            tree_view->priv->model,
10448                                            &iter,
10449                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
10450                                            cursor_node->children?TRUE:FALSE);
10451   gtk_tree_view_get_background_area (tree_view,
10452                                      cursor_path,
10453                                      tree_view->priv->focus_column,
10454                                      &background_area);
10455   gtk_tree_view_get_cell_area (tree_view,
10456                                cursor_path,
10457                                tree_view->priv->focus_column,
10458                                &cell_area);
10459   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
10460                                         &editable_widget,
10461                                         NULL,
10462                                         path_string,
10463                                         &background_area,
10464                                         &cell_area,
10465                                         flags))
10466     {
10467       retval = TRUE;
10468       if (editable_widget != NULL)
10469         {
10470           gtk_tree_view_real_start_editing (tree_view,
10471                                             tree_view->priv->focus_column,
10472                                             cursor_path,
10473                                             editable_widget,
10474                                             &cell_area,
10475                                             NULL,
10476                                             flags);
10477         }
10478
10479     }
10480   g_free (path_string);
10481   return retval;
10482 }
10483
10484 static void
10485 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
10486                                   GtkTreeViewColumn *column,
10487                                   GtkTreePath       *path,
10488                                   GtkCellEditable   *cell_editable,
10489                                   GdkRectangle      *cell_area,
10490                                   GdkEvent          *event,
10491                                   guint              flags)
10492 {
10493   tree_view->priv->edited_column = column;
10494   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
10495   gtk_tree_view_real_set_cursor (tree_view, path, FALSE);
10496   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
10497   gtk_tree_view_put (tree_view,
10498                      GTK_WIDGET (cell_editable),
10499                      cell_area->x, cell_area->y, cell_area->width, cell_area->height);
10500   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
10501                                    (GdkEvent *)event);
10502   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
10503   g_signal_connect (cell_editable, "remove_widget", G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
10504 }
10505
10506 static void
10507 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
10508                             gboolean     cancel_editing)
10509 {
10510   if (tree_view->priv->edited_column == NULL)
10511     return;
10512
10513   if (! cancel_editing)
10514     gtk_cell_editable_editing_done (tree_view->priv->edited_column->editable_widget);
10515
10516   gtk_cell_editable_remove_widget (tree_view->priv->edited_column->editable_widget);
10517 }