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

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