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 "config.h"
  22 #include <string.h>
  23 #include <gdk/gdkkeysyms.h>
  24
  25 #include "gtktreeview.h"
  26 #include "gtkrbtree.h"
  27 #include "gtktreednd.h"
  28 #include "gtktreeprivate.h"
  29 #include "gtkcellrenderer.h"
  30 #include "gtkmain.h"
  31 #include "gtkmarshalers.h"
  32 #include "gtkbuildable.h"
  33 #include "gtkbutton.h"
  34 #include "gtkalignment.h"
  35 #include "gtklabel.h"
  36 #include "gtkhbox.h"
  37 #include "gtkvbox.h"
  38 #include "gtkarrow.h"
  39 #include "gtkintl.h"
  40 #include "gtkbindings.h"
  41 #include "gtkcontainer.h"
  42 #include "gtkentry.h"
  43 #include "gtkframe.h"
  44 #include "gtktreemodelsort.h"
  45 #include "gtktooltip.h"
  46 #include "gtkprivate.h"
  47 #include "gtkalias.h"
  48
  49 #define GTK_TREE_VIEW_PRIORITY_VALIDATE (GDK_PRIORITY_REDRAW + 5)
  50 #define GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC (GTK_TREE_VIEW_PRIORITY_VALIDATE + 2)
  51 #define GTK_TREE_VIEW_TIME_MS_PER_IDLE 30
  52 #define SCROLL_EDGE_SIZE 15
  53 #define EXPANDER_EXTRA_PADDING 4
  54 #define GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT 5000
  55 #define AUTO_EXPAND_TIMEOUT 500
  56
  57 /* The "background" areas of all rows/cells add up to cover the entire tree.
  58  * The background includes all inter-row and inter-cell spacing.
  59  * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
  60  * i.e. just the cells, no spacing.
  61  */
  62
  63 #define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
  64 #define CELL_HEIGHT(node, separator) ((BACKGROUND_HEIGHT (node)) - (separator))
  65
  66 /* Translate from bin_window coordinates to rbtree (tree coordinates) and
  67  * vice versa.
  68  */
  69 #define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) + tree_view->priv->dy)
  70 #define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) - tree_view->priv->dy)
  71
  72 /* This is in bin_window coordinates */
  73 #define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, _gtk_rbtree_node_find_offset ((tree), (node))))
  74 #define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
  75
  76 #define ROW_HEIGHT(tree_view,height) \
  77   ((height > 0) ? (height) : (tree_view)->priv->expander_size)
  78
  79
  80 typedef struct _GtkTreeViewChild GtkTreeViewChild;
  81 struct _GtkTreeViewChild
  82 {
  83   GtkWidget *widget;
  84   gint x;
  85   gint y;
  86   gint width;
  87   gint height;
  88 };
  89
  90
  91 typedef struct _TreeViewDragInfo TreeViewDragInfo;
  92 struct _TreeViewDragInfo
  93 {
  94   GdkModifierType start_button_mask;
  95   GtkTargetList *_unused_source_target_list;
  96   GdkDragAction source_actions;
  97
  98   GtkTargetList *_unused_dest_target_list;
  99
 100   guint source_set : 1;
 101   guint dest_set : 1;
 102 };
 103
 104
 105 /* Signals */
 106 enum
 107 {
 108   ROW_ACTIVATED,
 109   TEST_EXPAND_ROW,
 110   TEST_COLLAPSE_ROW,
 111   ROW_EXPANDED,
 112   ROW_COLLAPSED,
 113   COLUMNS_CHANGED,
 114   CURSOR_CHANGED,
 115   MOVE_CURSOR,
 116   SELECT_ALL,
 117   UNSELECT_ALL,
 118   SELECT_CURSOR_ROW,
 119   TOGGLE_CURSOR_ROW,
 120   EXPAND_COLLAPSE_CURSOR_ROW,
 121   SELECT_CURSOR_PARENT,
 122   START_INTERACTIVE_SEARCH,
 123   LAST_SIGNAL
 124 };
 125
 126 /* Properties */
 127 enum {
 128   PROP_0,
 129   PROP_MODEL,
 130   PROP_HADJUSTMENT,
 131   PROP_VADJUSTMENT,
 132   PROP_HEADERS_VISIBLE,
 133   PROP_HEADERS_CLICKABLE,
 134   PROP_EXPANDER_COLUMN,
 135   PROP_REORDERABLE,
 136   PROP_RULES_HINT,
 137   PROP_ENABLE_SEARCH,
 138   PROP_SEARCH_COLUMN,
 139   PROP_FIXED_HEIGHT_MODE,
 140   PROP_HOVER_SELECTION,
 141   PROP_HOVER_EXPAND,
 142   PROP_SHOW_EXPANDERS,
 143   PROP_LEVEL_INDENTATION,
 144   PROP_RUBBER_BANDING,
 145   PROP_ENABLE_GRID_LINES,
 146   PROP_ENABLE_TREE_LINES,
 147   PROP_TOOLTIP_COLUMN
 148 };
 149
 150 /* object signals */
 151 static void     gtk_tree_view_finalize             (GObject          *object);
 152 static void     gtk_tree_view_set_property         (GObject         *object,
 153                                                     guint            prop_id,
 154                                                     const GValue    *value,
 155                                                     GParamSpec      *pspec);
 156 static void     gtk_tree_view_get_property         (GObject         *object,
 157                                                     guint            prop_id,
 158                                                     GValue          *value,
 159                                                     GParamSpec      *pspec);
 160
 161 /* gtkobject signals */
 162 static void     gtk_tree_view_destroy              (GtkObject        *object);
 163
 164 /* gtkwidget signals */
 165 static void     gtk_tree_view_realize              (GtkWidget        *widget);
 166 static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
 167 static void     gtk_tree_view_map                  (GtkWidget        *widget);
 168 static void     gtk_tree_view_size_request         (GtkWidget        *widget,
 169                                                     GtkRequisition   *requisition);
 170 static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
 171                                                     GtkAllocation    *allocation);
 172 static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
 173                                                     GdkEventExpose   *event);
 174 static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
 175                                                     GdkEventKey      *event);
 176 static gboolean gtk_tree_view_key_release          (GtkWidget        *widget,
 177                                                     GdkEventKey      *event);
 178 static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
 179                                                     GdkEventMotion   *event);
 180 static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
 181                                                     GdkEventCrossing *event);
 182 static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
 183                                                     GdkEventCrossing *event);
 184 static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
 185                                                     GdkEventButton   *event);
 186 static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
 187                                                     GdkEventButton   *event);
 188 static gboolean gtk_tree_view_grab_broken          (GtkWidget          *widget,
 189                                                     GdkEventGrabBroken *event);
 190 #if 0
 191 static gboolean gtk_tree_view_configure            (GtkWidget         *widget,
 192                                                     GdkEventConfigure *event);
 193 #endif
 194
 195 static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
 196                                                     GtkWidget        *child);
 197 static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
 198                                                     GdkEventFocus    *event);
 199 static gint     gtk_tree_view_focus                (GtkWidget        *widget,
 200                                                     GtkDirectionType  direction);
 201 static void     gtk_tree_view_grab_focus           (GtkWidget        *widget);
 202 static void     gtk_tree_view_style_set            (GtkWidget        *widget,
 203                                                     GtkStyle         *previous_style);
 204 static void     gtk_tree_view_grab_notify          (GtkWidget        *widget,
 205                                                     gboolean          was_grabbed);
 206 static void     gtk_tree_view_state_changed        (GtkWidget        *widget,
 207                                                     GtkStateType      previous_state);
 208
 209 /* container signals */
 210 static void     gtk_tree_view_remove               (GtkContainer     *container,
 211                                                     GtkWidget        *widget);
 212 static void     gtk_tree_view_forall               (GtkContainer     *container,
 213                                                     gboolean          include_internals,
 214                                                     GtkCallback       callback,
 215                                                     gpointer          callback_data);
 216
 217 /* Source side drag signals */
 218 static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
 219                                             GdkDragContext   *context);
 220 static void gtk_tree_view_drag_end         (GtkWidget        *widget,
 221                                             GdkDragContext   *context);
 222 static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
 223                                             GdkDragContext   *context,
 224                                             GtkSelectionData *selection_data,
 225                                             guint             info,
 226                                             guint             time);
 227 static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
 228                                             GdkDragContext   *context);
 229
 230 /* Target side drag signals */
 231 static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
 232                                                   GdkDragContext   *context,
 233                                                   guint             time);
 234 static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
 235                                                   GdkDragContext   *context,
 236                                                   gint              x,
 237                                                   gint              y,
 238                                                   guint             time);
 239 static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
 240                                                   GdkDragContext   *context,
 241                                                   gint              x,
 242                                                   gint              y,
 243                                                   guint             time);
 244 static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
 245                                                   GdkDragContext   *context,
 246                                                   gint              x,
 247                                                   gint              y,
 248                                                   GtkSelectionData *selection_data,
 249                                                   guint             info,
 250                                                   guint             time);
 251
 252 /* tree_model signals */
 253 static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
 254                                                            GtkAdjustment   *hadj,
 255                                                            GtkAdjustment   *vadj);
 256 static gboolean gtk_tree_view_real_move_cursor            (GtkTreeView     *tree_view,
 257                                                            GtkMovementStep  step,
 258                                                            gint             count);
 259 static gboolean gtk_tree_view_real_select_all             (GtkTreeView     *tree_view);
 260 static gboolean gtk_tree_view_real_unselect_all           (GtkTreeView     *tree_view);
 261 static gboolean gtk_tree_view_real_select_cursor_row      (GtkTreeView     *tree_view,
 262                                                            gboolean         start_editing);
 263 static gboolean gtk_tree_view_real_toggle_cursor_row      (GtkTreeView     *tree_view);
 264 static gboolean gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
 265                                                                gboolean         logical,
 266                                                                gboolean         expand,
 267                                                                gboolean         open_all);
 268 static gboolean gtk_tree_view_real_select_cursor_parent   (GtkTreeView     *tree_view);
 269 static void gtk_tree_view_row_changed                     (GtkTreeModel    *model,
 270                                                            GtkTreePath     *path,
 271                                                            GtkTreeIter     *iter,
 272                                                            gpointer         data);
 273 static void gtk_tree_view_row_inserted                    (GtkTreeModel    *model,
 274                                                            GtkTreePath     *path,
 275                                                            GtkTreeIter     *iter,
 276                                                            gpointer         data);
 277 static void gtk_tree_view_row_has_child_toggled           (GtkTreeModel    *model,
 278                                                            GtkTreePath     *path,
 279                                                            GtkTreeIter     *iter,
 280                                                            gpointer         data);
 281 static void gtk_tree_view_row_deleted                     (GtkTreeModel    *model,
 282                                                            GtkTreePath     *path,
 283                                                            gpointer         data);
 284 static void gtk_tree_view_rows_reordered                  (GtkTreeModel    *model,
 285                                                            GtkTreePath     *parent,
 286                                                            GtkTreeIter     *iter,
 287                                                            gint            *new_order,
 288                                                            gpointer         data);
 289
 290 /* Incremental reflow */
 291 static gboolean validate_row             (GtkTreeView *tree_view,
 292                                           GtkRBTree   *tree,
 293                                           GtkRBNode   *node,
 294                                           GtkTreeIter *iter,
 295                                           GtkTreePath *path);
 296 static void     validate_visible_area    (GtkTreeView *tree_view);
 297 static gboolean validate_rows_handler    (GtkTreeView *tree_view);
 298 static gboolean do_validate_rows         (GtkTreeView *tree_view,
 299                                           gboolean     size_request);
 300 static gboolean validate_rows            (GtkTreeView *tree_view);
 301 static gboolean presize_handler_callback (gpointer     data);
 302 static void     install_presize_handler  (GtkTreeView *tree_view);
 303 static void     install_scroll_sync_handler (GtkTreeView *tree_view);
 304 static void     gtk_tree_view_set_top_row   (GtkTreeView *tree_view,
 305                                              GtkTreePath *path,
 306                                              gint         offset);
 307 static void     gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view);
 308 static void     gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view);
 309 static void     invalidate_empty_focus      (GtkTreeView *tree_view);
 310
 311 /* Internal functions */
 312 static gboolean gtk_tree_view_is_expander_column             (GtkTreeView        *tree_view,
 313                                                               GtkTreeViewColumn  *column);
 314 static void     gtk_tree_view_add_move_binding               (GtkBindingSet      *binding_set,
 315                                                               guint               keyval,
 316                                                               guint               modmask,
 317                                                               gboolean            add_shifted_binding,
 318                                                               GtkMovementStep     step,
 319                                                               gint                count);
 320 static gint     gtk_tree_view_unref_and_check_selection_tree (GtkTreeView        *tree_view,
 321                                                               GtkRBTree          *tree);
 322 static void     gtk_tree_view_queue_draw_path                (GtkTreeView        *tree_view,
 323                                                               GtkTreePath        *path,
 324                                                               const GdkRectangle *clip_rect);
 325 static void     gtk_tree_view_queue_draw_arrow               (GtkTreeView        *tree_view,
 326                                                               GtkRBTree          *tree,
 327                                                               GtkRBNode          *node,
 328                                                               const GdkRectangle *clip_rect);
 329 static void     gtk_tree_view_draw_arrow                     (GtkTreeView        *tree_view,
 330                                                               GtkRBTree          *tree,
 331                                                               GtkRBNode          *node,
 332                                                               gint                x,
 333                                                               gint                y);
 334 static void     gtk_tree_view_get_arrow_xrange               (GtkTreeView        *tree_view,
 335                                                               GtkRBTree          *tree,
 336                                                               gint               *x1,
 337                                                               gint               *x2);
 338 static gint     gtk_tree_view_new_column_width               (GtkTreeView        *tree_view,
 339                                                               gint                i,
 340                                                               gint               *x);
 341 static void     gtk_tree_view_adjustment_changed             (GtkAdjustment      *adjustment,
 342                                                               GtkTreeView        *tree_view);
 343 static void     gtk_tree_view_build_tree                     (GtkTreeView        *tree_view,
 344                                                               GtkRBTree          *tree,
 345                                                               GtkTreeIter        *iter,
 346                                                               gint                depth,
 347                                                               gboolean            recurse);
 348 static void     gtk_tree_view_clamp_node_visible             (GtkTreeView        *tree_view,
 349                                                               GtkRBTree          *tree,
 350                                                               GtkRBNode          *node);
 351 static void     gtk_tree_view_clamp_column_visible           (GtkTreeView        *tree_view,
 352                                                               GtkTreeViewColumn  *column,
 353                                                               gboolean            focus_to_cell);
 354 static gboolean gtk_tree_view_maybe_begin_dragging_row       (GtkTreeView        *tree_view,
 355                                                               GdkEventMotion     *event);
 356 static void     gtk_tree_view_focus_to_cursor                (GtkTreeView        *tree_view);
 357 static void     gtk_tree_view_move_cursor_up_down            (GtkTreeView        *tree_view,
 358                                                               gint                count);
 359 static void     gtk_tree_view_move_cursor_page_up_down       (GtkTreeView        *tree_view,
 360                                                               gint                count);
 361 static void     gtk_tree_view_move_cursor_left_right         (GtkTreeView        *tree_view,
 362                                                               gint                count);
 363 static void     gtk_tree_view_move_cursor_start_end          (GtkTreeView        *tree_view,
 364                                                               gint                count);
 365 static gboolean gtk_tree_view_real_collapse_row              (GtkTreeView        *tree_view,
 366                                                               GtkTreePath        *path,
 367                                                               GtkRBTree          *tree,
 368                                                               GtkRBNode          *node,
 369                                                               gboolean            animate);
 370 static gboolean gtk_tree_view_real_expand_row                (GtkTreeView        *tree_view,
 371                                                               GtkTreePath        *path,
 372                                                               GtkRBTree          *tree,
 373                                                               GtkRBNode          *node,
 374                                                               gboolean            open_all,
 375                                                               gboolean            animate);
 376 static void     gtk_tree_view_real_set_cursor                (GtkTreeView        *tree_view,
 377                                                               GtkTreePath        *path,
 378                                                               gboolean            clear_and_select,
 379                                                               gboolean            clamp_node);
 380 static gboolean gtk_tree_view_has_special_cell               (GtkTreeView        *tree_view);
 381 static void     column_sizing_notify                         (GObject            *object,
 382                                                               GParamSpec         *pspec,
 383                                                               gpointer            data);
 384 static gboolean expand_collapse_timeout                      (gpointer            data);
 385 static void     add_expand_collapse_timeout                  (GtkTreeView        *tree_view,
 386                                                               GtkRBTree          *tree,
 387                                                               GtkRBNode          *node,
 388                                                               gboolean            expand);
 389 static void     remove_expand_collapse_timeout               (GtkTreeView        *tree_view);
 390 static void     cancel_arrow_animation                       (GtkTreeView        *tree_view);
 391 static gboolean do_expand_collapse                           (GtkTreeView        *tree_view);
 392 static void     gtk_tree_view_stop_rubber_band               (GtkTreeView        *tree_view);
 393
 394 /* interactive search */
 395 static void     gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view);
 396 static void     gtk_tree_view_search_dialog_hide     (GtkWidget        *search_dialog,
 397                                                          GtkTreeView      *tree_view);
 398 static void     gtk_tree_view_search_position_func      (GtkTreeView      *tree_view,
 399                                                          GtkWidget        *search_dialog,
 400                                                          gpointer          user_data);
 401 static void     gtk_tree_view_search_disable_popdown    (GtkEntry         *entry,
 402                                                          GtkMenu          *menu,
 403                                                          gpointer          data);
 404 static void     gtk_tree_view_search_preedit_changed    (GtkIMContext     *im_context,
 405                                                          GtkTreeView      *tree_view);
 406 static void     gtk_tree_view_search_activate           (GtkEntry         *entry,
 407                                                          GtkTreeView      *tree_view);
 408 static gboolean gtk_tree_view_real_search_enable_popdown(gpointer          data);
 409 static void     gtk_tree_view_search_enable_popdown     (GtkWidget        *widget,
 410                                                          gpointer          data);
 411 static gboolean gtk_tree_view_search_delete_event       (GtkWidget        *widget,
 412                                                          GdkEventAny      *event,
 413                                                          GtkTreeView      *tree_view);
 414 static gboolean gtk_tree_view_search_button_press_event (GtkWidget        *widget,
 415                                                          GdkEventButton   *event,
 416                                                          GtkTreeView      *tree_view);
 417 static gboolean gtk_tree_view_search_scroll_event       (GtkWidget        *entry,
 418                                                          GdkEventScroll   *event,
 419                                                          GtkTreeView      *tree_view);
 420 static gboolean gtk_tree_view_search_key_press_event    (GtkWidget        *entry,
 421                                                          GdkEventKey      *event,
 422                                                          GtkTreeView      *tree_view);
 423 static gboolean gtk_tree_view_search_move               (GtkWidget        *window,
 424                                                          GtkTreeView      *tree_view,
 425                                                          gboolean          up);
 426 static gboolean gtk_tree_view_search_equal_func         (GtkTreeModel     *model,
 427                                                          gint              column,
 428                                                          const gchar      *key,
 429                                                          GtkTreeIter      *iter,
 430                                                          gpointer          search_data);
 431 static gboolean gtk_tree_view_search_iter               (GtkTreeModel     *model,
 432                                                          GtkTreeSelection *selection,
 433                                                          GtkTreeIter      *iter,
 434                                                          const gchar      *text,
 435                                                          gint             *count,
 436                                                          gint              n);
 437 static void     gtk_tree_view_search_init               (GtkWidget        *entry,
 438                                                          GtkTreeView      *tree_view);
 439 static void     gtk_tree_view_put                       (GtkTreeView      *tree_view,
 440                                                          GtkWidget        *child_widget,
 441                                                          gint              x,
 442                                                          gint              y,
 443                                                          gint              width,
 444                                                          gint              height);
 445 static gboolean gtk_tree_view_start_editing             (GtkTreeView      *tree_view,
 446                                                          GtkTreePath      *cursor_path);
 447 static void gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
 448                                               GtkTreeViewColumn *column,
 449                                               GtkTreePath       *path,
 450                                               GtkCellEditable   *cell_editable,
 451                                               GdkRectangle      *cell_area,
 452                                               GdkEvent          *event,
 453                                               guint              flags);
 454 static void gtk_tree_view_stop_editing                  (GtkTreeView *tree_view,
 455                                                          gboolean     cancel_editing);
 456 static gboolean gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
 457                                                              gboolean     keybinding);
 458 static gboolean gtk_tree_view_start_interactive_search      (GtkTreeView *tree_view);
 459 static GtkTreeViewColumn *gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
 460                                                          GtkTreeViewColumn *column,
 461                                                          gint               drop_position);
 462
 463 /* GtkBuildable */
 464 static void gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
 465                                                GtkBuilder  *builder,
 466                                                GObject     *child,
 467                                                const gchar *type);
 468 static void gtk_tree_view_buildable_init      (GtkBuildableIface *iface);
 469
 470
 471 static gboolean scroll_row_timeout                   (gpointer     data);
 472 static void     add_scroll_timeout                   (GtkTreeView *tree_view);
 473 static void     remove_scroll_timeout                (GtkTreeView *tree_view);
 474
 475 static guint tree_view_signals [LAST_SIGNAL] = { 0 };
 476
 477 \f
 478
 479 /* GType Methods
 480  */
 481
 482 G_DEFINE_TYPE_WITH_CODE (GtkTreeView, gtk_tree_view, GTK_TYPE_CONTAINER,
 483                          G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
 484                                                 gtk_tree_view_buildable_init))
 485
 486 static void
 487 gtk_tree_view_class_init (GtkTreeViewClass *class)
 488 {
 489   GObjectClass *o_class;
 490   GtkObjectClass *object_class;
 491   GtkWidgetClass *widget_class;
 492   GtkContainerClass *container_class;
 493   GtkBindingSet *binding_set;
 494
 495   binding_set = gtk_binding_set_by_class (class);
 496
 497   o_class = (GObjectClass *) class;
 498   object_class = (GtkObjectClass *) class;
 499   widget_class = (GtkWidgetClass *) class;
 500   container_class = (GtkContainerClass *) class;
 501
 502   /* GObject signals */
 503   o_class->set_property = gtk_tree_view_set_property;
 504   o_class->get_property = gtk_tree_view_get_property;
 505   o_class->finalize = gtk_tree_view_finalize;
 506
 507   /* GtkObject signals */
 508   object_class->destroy = gtk_tree_view_destroy;
 509
 510   /* GtkWidget signals */
 511   widget_class->map = gtk_tree_view_map;
 512   widget_class->realize = gtk_tree_view_realize;
 513   widget_class->unrealize = gtk_tree_view_unrealize;
 514   widget_class->size_request = gtk_tree_view_size_request;
 515   widget_class->size_allocate = gtk_tree_view_size_allocate;
 516   widget_class->button_press_event = gtk_tree_view_button_press;
 517   widget_class->button_release_event = gtk_tree_view_button_release;
 518   widget_class->grab_broken_event = gtk_tree_view_grab_broken;
 519   /*widget_class->configure_event = gtk_tree_view_configure;*/
 520   widget_class->motion_notify_event = gtk_tree_view_motion;
 521   widget_class->expose_event = gtk_tree_view_expose;
 522   widget_class->key_press_event = gtk_tree_view_key_press;
 523   widget_class->key_release_event = gtk_tree_view_key_release;
 524   widget_class->enter_notify_event = gtk_tree_view_enter_notify;
 525   widget_class->leave_notify_event = gtk_tree_view_leave_notify;
 526   widget_class->focus_out_event = gtk_tree_view_focus_out;
 527   widget_class->drag_begin = gtk_tree_view_drag_begin;
 528   widget_class->drag_end = gtk_tree_view_drag_end;
 529   widget_class->drag_data_get = gtk_tree_view_drag_data_get;
 530   widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
 531   widget_class->drag_leave = gtk_tree_view_drag_leave;
 532   widget_class->drag_motion = gtk_tree_view_drag_motion;
 533   widget_class->drag_drop = gtk_tree_view_drag_drop;
 534   widget_class->drag_data_received = gtk_tree_view_drag_data_received;
 535   widget_class->focus = gtk_tree_view_focus;
 536   widget_class->grab_focus = gtk_tree_view_grab_focus;
 537   widget_class->style_set = gtk_tree_view_style_set;
 538   widget_class->grab_notify = gtk_tree_view_grab_notify;
 539   widget_class->state_changed = gtk_tree_view_state_changed;
 540
 541   /* GtkContainer signals */
 542   container_class->remove = gtk_tree_view_remove;
 543   container_class->forall = gtk_tree_view_forall;
 544   container_class->set_focus_child = gtk_tree_view_set_focus_child;
 545
 546   class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
 547   class->move_cursor = gtk_tree_view_real_move_cursor;
 548   class->select_all = gtk_tree_view_real_select_all;
 549   class->unselect_all = gtk_tree_view_real_unselect_all;
 550   class->select_cursor_row = gtk_tree_view_real_select_cursor_row;
 551   class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
 552   class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
 553   class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;
 554   class->start_interactive_search = gtk_tree_view_start_interactive_search;
 555
 556   /* Properties */
 557
 558   g_object_class_install_property (o_class,
 559                                    PROP_MODEL,
 560                                    g_param_spec_object ("model",
 561                                                         P_("TreeView Model"),
 562                                                         P_("The model for the tree view"),
 563                                                         GTK_TYPE_TREE_MODEL,
 564                                                         GTK_PARAM_READWRITE));
 565
 566   g_object_class_install_property (o_class,
 567                                    PROP_HADJUSTMENT,
 568                                    g_param_spec_object ("hadjustment",
 569                                                         P_("Horizontal Adjustment"),
 570                                                         P_("Horizontal Adjustment for the widget"),
 571                                                         GTK_TYPE_ADJUSTMENT,
 572                                                         GTK_PARAM_READWRITE));
 573
 574   g_object_class_install_property (o_class,
 575                                    PROP_VADJUSTMENT,
 576                                    g_param_spec_object ("vadjustment",
 577                                                         P_("Vertical Adjustment"),
 578                                                         P_("Vertical Adjustment for the widget"),
 579                                                         GTK_TYPE_ADJUSTMENT,
 580                                                         GTK_PARAM_READWRITE));
 581
 582   g_object_class_install_property (o_class,
 583                                    PROP_HEADERS_VISIBLE,
 584                                    g_param_spec_boolean ("headers-visible",
 585                                                          P_("Headers Visible"),
 586                                                          P_("Show the column header buttons"),
 587                                                          TRUE,
 588                                                          GTK_PARAM_READWRITE));
 589
 590   g_object_class_install_property (o_class,
 591                                    PROP_HEADERS_CLICKABLE,
 592                                    g_param_spec_boolean ("headers-clickable",
 593                                                          P_("Headers Clickable"),
 594                                                          P_("Column headers respond to click events"),
 595                                                          TRUE,
 596                                                          GTK_PARAM_READWRITE));
 597
 598   g_object_class_install_property (o_class,
 599                                    PROP_EXPANDER_COLUMN,
 600                                    g_param_spec_object ("expander-column",
 601                                                         P_("Expander Column"),
 602                                                         P_("Set the column for the expander column"),
 603                                                         GTK_TYPE_TREE_VIEW_COLUMN,
 604                                                         GTK_PARAM_READWRITE));
 605
 606   g_object_class_install_property (o_class,
 607                                    PROP_REORDERABLE,
 608                                    g_param_spec_boolean ("reorderable",
 609                                                          P_("Reorderable"),
 610                                                          P_("View is reorderable"),
 611                                                          FALSE,
 612                                                          GTK_PARAM_READWRITE));
 613
 614   g_object_class_install_property (o_class,
 615                                    PROP_RULES_HINT,
 616                                    g_param_spec_boolean ("rules-hint",
 617                                                          P_("Rules Hint"),
 618                                                          P_("Set a hint to the theme engine to draw rows in alternating colors"),
 619                                                          FALSE,
 620                                                          GTK_PARAM_READWRITE));
 621
 622     g_object_class_install_property (o_class,
 623                                      PROP_ENABLE_SEARCH,
 624                                      g_param_spec_boolean ("enable-search",
 625                                                            P_("Enable Search"),
 626                                                            P_("View allows user to search through columns interactively"),
 627                                                            TRUE,
 628                                                            GTK_PARAM_READWRITE));
 629
 630     g_object_class_install_property (o_class,
 631                                      PROP_SEARCH_COLUMN,
 632                                      g_param_spec_int ("search-column",
 633                                                        P_("Search Column"),
 634                                                        P_("Model column to search through during interactive search"),
 635                                                        -1,
 636                                                        G_MAXINT,
 637                                                        -1,
 638                                                        GTK_PARAM_READWRITE));
 639
 640     /**
 641      * GtkTreeView:fixed-height-mode:
 642      *
 643      * Setting the ::fixed-height-mode property to %TRUE speeds up
 644      * #GtkTreeView by assuming that all rows have the same height.
 645      * Only enable this option if all rows are the same height.
 646      * Please see gtk_tree_view_set_fixed_height_mode() for more
 647      * information on this option.
 648      *
 649      * Since: 2.4
 650      **/
 651     g_object_class_install_property (o_class,
 652                                      PROP_FIXED_HEIGHT_MODE,
 653                                      g_param_spec_boolean ("fixed-height-mode",
 654                                                            P_("Fixed Height Mode"),
 655                                                            P_("Speeds up GtkTreeView by assuming that all rows have the same height"),
 656                                                            FALSE,
 657                                                            GTK_PARAM_READWRITE));
 658
 659     /**
 660      * GtkTreeView:hover-selection:
 661      *
 662      * Enables of disables the hover selection mode of @tree_view.
 663      * Hover selection makes the selected row follow the pointer.
 664      * Currently, this works only for the selection modes
 665      * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
 666      *
 667      * This mode is primarily intended for treeviews in popups, e.g.
 668      * in #GtkComboBox or #GtkEntryCompletion.
 669      *
 670      * Since: 2.6
 671      */
 672     g_object_class_install_property (o_class,
 673                                      PROP_HOVER_SELECTION,
 674                                      g_param_spec_boolean ("hover-selection",
 675                                                            P_("Hover Selection"),
 676                                                            P_("Whether the selection should follow the pointer"),
 677                                                            FALSE,
 678                                                            GTK_PARAM_READWRITE));
 679
 680     /**
 681      * GtkTreeView:hover-expand:
 682      *
 683      * Enables of disables the hover expansion mode of @tree_view.
 684      * Hover expansion makes rows expand or collapse if the pointer moves
 685      * over them.
 686      *
 687      * This mode is primarily intended for treeviews in popups, e.g.
 688      * in #GtkComboBox or #GtkEntryCompletion.
 689      *
 690      * Since: 2.6
 691      */
 692     g_object_class_install_property (o_class,
 693                                      PROP_HOVER_EXPAND,
 694                                      g_param_spec_boolean ("hover-expand",
 695                                                            P_("Hover Expand"),
 696                                                            P_("Whether rows should be expanded/collapsed when the pointer moves over them"),
 697                                                            FALSE,
 698                                                            GTK_PARAM_READWRITE));
 699
 700     /**
 701      * GtkTreeView:show-expanders:
 702      *
 703      * %TRUE if the view has expanders.
 704      *
 705      * Since: 2.12
 706      */
 707     g_object_class_install_property (o_class,
 708                                      PROP_SHOW_EXPANDERS,
 709                                      g_param_spec_boolean ("show-expanders",
 710                                                            P_("Show Expanders"),
 711                                                            P_("View has expanders"),
 712                                                            TRUE,
 713                                                            GTK_PARAM_READWRITE));
 714
 715     /**
 716      * GtkTreeView:level-indentation:
 717      *
 718      * Extra indentation for each level.
 719      *
 720      * Since: 2.12
 721      */
 722     g_object_class_install_property (o_class,
 723                                      PROP_LEVEL_INDENTATION,
 724                                      g_param_spec_int ("level-indentation",
 725                                                        P_("Level Indentation"),
 726                                                        P_("Extra indentation for each level"),
 727                                                        0,
 728                                                        G_MAXINT,
 729                                                        0,
 730                                                        GTK_PARAM_READWRITE));
 731
 732     g_object_class_install_property (o_class,
 733                                      PROP_RUBBER_BANDING,
 734                                      g_param_spec_boolean ("rubber-banding",
 735                                                            P_("Rubber Banding"),
 736                                                            P_("Whether to enable selection of multiple items by dragging the mouse pointer"),
 737                                                            FALSE,
 738                                                            GTK_PARAM_READWRITE));
 739
 740     g_object_class_install_property (o_class,
 741                                      PROP_ENABLE_GRID_LINES,
 742                                      g_param_spec_enum ("enable-grid-lines",
 743                                                         P_("Enable Grid Lines"),
 744                                                         P_("Whether grid lines should be drawn in the tree view"),
 745                                                         GTK_TYPE_TREE_VIEW_GRID_LINES,
 746                                                         GTK_TREE_VIEW_GRID_LINES_NONE,
 747                                                         GTK_PARAM_READWRITE));
 748
 749     g_object_class_install_property (o_class,
 750                                      PROP_ENABLE_TREE_LINES,
 751                                      g_param_spec_boolean ("enable-tree-lines",
 752                                                            P_("Enable Tree Lines"),
 753                                                            P_("Whether tree lines should be drawn in the tree view"),
 754                                                            FALSE,
 755                                                            GTK_PARAM_READWRITE));
 756
 757     g_object_class_install_property (o_class,
 758                                      PROP_TOOLTIP_COLUMN,
 759                                      g_param_spec_int ("tooltip-column",
 760                                                        P_("Tooltip Column"),
 761                                                        P_("The column in the model containing the tooltip texts for the rows"),
 762                                                        -1,
 763                                                        G_MAXINT,
 764                                                        -1,
 765                                                        GTK_PARAM_READWRITE));
 766
 767   /* Style properties */
 768 #define _TREE_VIEW_EXPANDER_SIZE 12
 769 #define _TREE_VIEW_VERTICAL_SEPARATOR 2
 770 #define _TREE_VIEW_HORIZONTAL_SEPARATOR 2
 771
 772   gtk_widget_class_install_style_property (widget_class,
 773                                            g_param_spec_int ("expander-size",
 774                                                              P_("Expander Size"),
 775                                                              P_("Size of the expander arrow"),
 776                                                              0,
 777                                                              G_MAXINT,
 778                                                              _TREE_VIEW_EXPANDER_SIZE,
 779                                                              GTK_PARAM_READABLE));
 780
 781   gtk_widget_class_install_style_property (widget_class,
 782                                            g_param_spec_int ("vertical-separator",
 783                                                              P_("Vertical Separator Width"),
 784                                                              P_("Vertical space between cells.  Must be an even number"),
 785                                                              0,
 786                                                              G_MAXINT,
 787                                                              _TREE_VIEW_VERTICAL_SEPARATOR,
 788                                                              GTK_PARAM_READABLE));
 789
 790   gtk_widget_class_install_style_property (widget_class,
 791                                            g_param_spec_int ("horizontal-separator",
 792                                                              P_("Horizontal Separator Width"),
 793                                                              P_("Horizontal space between cells.  Must be an even number"),
 794                                                              0,
 795                                                              G_MAXINT,
 796                                                              _TREE_VIEW_HORIZONTAL_SEPARATOR,
 797                                                              GTK_PARAM_READABLE));
 798
 799   gtk_widget_class_install_style_property (widget_class,
 800                                            g_param_spec_boolean ("allow-rules",
 801                                                                  P_("Allow Rules"),
 802                                                                  P_("Allow drawing of alternating color rows"),
 803                                                                  TRUE,
 804                                                                  GTK_PARAM_READABLE));
 805
 806   gtk_widget_class_install_style_property (widget_class,
 807                                            g_param_spec_boolean ("indent-expanders",
 808                                                                  P_("Indent Expanders"),
 809                                                                  P_("Make the expanders indented"),
 810                                                                  TRUE,
 811                                                                  GTK_PARAM_READABLE));
 812
 813   gtk_widget_class_install_style_property (widget_class,
 814                                            g_param_spec_boxed ("even-row-color",
 815                                                                P_("Even Row Color"),
 816                                                                P_("Color to use for even rows"),
 817                                                                GDK_TYPE_COLOR,
 818                                                                GTK_PARAM_READABLE));
 819
 820   gtk_widget_class_install_style_property (widget_class,
 821                                            g_param_spec_boxed ("odd-row-color",
 822                                                                P_("Odd Row Color"),
 823                                                                P_("Color to use for odd rows"),
 824                                                                GDK_TYPE_COLOR,
 825                                                                GTK_PARAM_READABLE));
 826
 827   gtk_widget_class_install_style_property (widget_class,
 828                                            g_param_spec_boolean ("row-ending-details",
 829                                                                  P_("Row Ending details"),
 830                                                                  P_("Enable extended row background theming"),
 831                                                                  FALSE,
 832                                                                  GTK_PARAM_READABLE));
 833
 834   gtk_widget_class_install_style_property (widget_class,
 835                                            g_param_spec_int ("grid-line-width",
 836                                                              P_("Grid line width"),
 837                                                              P_("Width, in pixels, of the tree view grid lines"),
 838                                                              0, G_MAXINT, 1,
 839                                                              GTK_PARAM_READABLE));
 840
 841   gtk_widget_class_install_style_property (widget_class,
 842                                            g_param_spec_int ("tree-line-width",
 843                                                              P_("Tree line width"),
 844                                                              P_("Width, in pixels, of the tree view lines"),
 845                                                              0, G_MAXINT, 1,
 846                                                              GTK_PARAM_READABLE));
 847
 848   gtk_widget_class_install_style_property (widget_class,
 849                                            g_param_spec_string ("grid-line-pattern",
 850                                                                 P_("Grid line pattern"),
 851                                                                 P_("Dash pattern used to draw the tree view grid lines"),
 852                                                                 "\1\1",
 853                                                                 GTK_PARAM_READABLE));
 854
 855   gtk_widget_class_install_style_property (widget_class,
 856                                            g_param_spec_string ("tree-line-pattern",
 857                                                                 P_("Tree line pattern"),
 858                                                                 P_("Dash pattern used to draw the tree view lines"),
 859                                                                 "\1\1",
 860                                                                 GTK_PARAM_READABLE));
 861
 862   /* Signals */
 863   /**
 864    * GtkTreeView::set-scroll-adjustments
 865    * @horizontal: the horizontal #GtkAdjustment
 866    * @vertical: the vertical #GtkAdjustment
 867    *
 868    * Set the scroll adjustments for the tree view. Usually scrolled containers
 869    * like #GtkScrolledWindow will emit this signal to connect two instances
 870    * of #GtkScrollbar to the scroll directions of the #GtkTreeView.
 871    */
 872   widget_class->set_scroll_adjustments_signal =
 873     g_signal_new (I_("set-scroll-adjustments"),
 874                   G_TYPE_FROM_CLASS (o_class),
 875                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 876                   G_STRUCT_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
 877                   NULL, NULL,
 878                   _gtk_marshal_VOID__OBJECT_OBJECT,
 879                   G_TYPE_NONE, 2,
 880                   GTK_TYPE_ADJUSTMENT,
 881                   GTK_TYPE_ADJUSTMENT);
 882
 883   /**
 884    * GtkTreeView::row-activated:
 885    * @tree_view: the object on which the signal is emitted
 886    * @path: the #GtkTreePath for the activated row
 887    * @column: the #GtkTreeViewColumn in which the activation occurred
 888    *
 889    * The "row-activated" signal is emitted when the method
 890    * gtk_tree_view_row_activated() is called or the user double clicks
 891    * a treeview row. It is also emitted when a non-editable row is
 892    * selected and one of the keys: Space, Shift+Space, Return or
 893    * Enter is pressed.
 894    *
 895    * For selection handling refer to the <link linkend="TreeWidget">tree
 896    * widget conceptual overview</link> as well as #GtkTreeSelection.
 897    */
 898   tree_view_signals[ROW_ACTIVATED] =
 899     g_signal_new (I_("row-activated"),
 900                   G_TYPE_FROM_CLASS (o_class),
 901                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
 902                   G_STRUCT_OFFSET (GtkTreeViewClass, row_activated),
 903                   NULL, NULL,
 904                   _gtk_marshal_VOID__BOXED_OBJECT,
 905                   G_TYPE_NONE, 2,
 906                   GTK_TYPE_TREE_PATH,
 907                   GTK_TYPE_TREE_VIEW_COLUMN);
 908
 909   /**
 910    * GtkTreeView::test-expand-row:
 911    * @tree_view: the object on which the signal is emitted
 912    * @iter: the tree iter of the row to expand
 913    * @path: a tree path that points to the row
 914    *
 915    * The given row is about to be expanded (show its children nodes). Use this
 916    * signal if you need to control the expandability of individual rows.
 917    *
 918    * Returns: %FALSE to allow expansion, %TRUE to reject
 919    */
 920   tree_view_signals[TEST_EXPAND_ROW] =
 921     g_signal_new (I_("test-expand-row"),
 922                   G_TYPE_FROM_CLASS (o_class),
 923                   G_SIGNAL_RUN_LAST,
 924                   G_STRUCT_OFFSET (GtkTreeViewClass, test_expand_row),
 925                   _gtk_boolean_handled_accumulator, NULL,
 926                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 927                   G_TYPE_BOOLEAN, 2,
 928                   GTK_TYPE_TREE_ITER,
 929                   GTK_TYPE_TREE_PATH);
 930
 931   /**
 932    * GtkTreeView::test-collapse-row:
 933    * @tree_view: the object on which the signal is emitted
 934    * @iter: the tree iter of the row to collapse
 935    * @path: a tree path that points to the row
 936    *
 937    * The given row is about to be collapsed (hide its children nodes). Use this
 938    * signal if you need to control the collapsibility of individual rows.
 939    *
 940    * Returns: %FALSE to allow collapsing, %TRUE to reject
 941    */
 942   tree_view_signals[TEST_COLLAPSE_ROW] =
 943     g_signal_new (I_("test-collapse-row"),
 944                   G_TYPE_FROM_CLASS (o_class),
 945                   G_SIGNAL_RUN_LAST,
 946                   G_STRUCT_OFFSET (GtkTreeViewClass, test_collapse_row),
 947                   _gtk_boolean_handled_accumulator, NULL,
 948                   _gtk_marshal_BOOLEAN__BOXED_BOXED,
 949                   G_TYPE_BOOLEAN, 2,
 950                   GTK_TYPE_TREE_ITER,
 951                   GTK_TYPE_TREE_PATH);
 952
 953   /**
 954    * GtkTreeView::row-expanded:
 955    * @tree_view: the object on which the signal is emitted
 956    * @iter: the tree iter of the expanded row
 957    * @path: a tree path that points to the row
 958    *
 959    * The given row has been expanded (child nodes are shown).
 960    */
 961   tree_view_signals[ROW_EXPANDED] =
 962     g_signal_new (I_("row-expanded"),
 963                   G_TYPE_FROM_CLASS (o_class),
 964                   G_SIGNAL_RUN_LAST,
 965                   G_STRUCT_OFFSET (GtkTreeViewClass, row_expanded),
 966                   NULL, NULL,
 967                   _gtk_marshal_VOID__BOXED_BOXED,
 968                   G_TYPE_NONE, 2,
 969                   GTK_TYPE_TREE_ITER,
 970                   GTK_TYPE_TREE_PATH);
 971
 972   /**
 973    * GtkTreeView::row-collapsed:
 974    * @tree_view: the object on which the signal is emitted
 975    * @iter: the tree iter of the collapsed row
 976    * @path: a tree path that points to the row
 977    *
 978    * The given row has been collapsed (child nodes are hidden).
 979    */
 980   tree_view_signals[ROW_COLLAPSED] =
 981     g_signal_new (I_("row-collapsed"),
 982                   G_TYPE_FROM_CLASS (o_class),
 983                   G_SIGNAL_RUN_LAST,
 984                   G_STRUCT_OFFSET (GtkTreeViewClass, row_collapsed),
 985                   NULL, NULL,
 986                   _gtk_marshal_VOID__BOXED_BOXED,
 987                   G_TYPE_NONE, 2,
 988                   GTK_TYPE_TREE_ITER,
 989                   GTK_TYPE_TREE_PATH);
 990
 991   /**
 992    * GtkTreeView::columns-changed:
 993    * @tree_view: the object on which the signal is emitted
 994    *
 995    * The number of columns of the treeview has changed.
 996    */
 997   tree_view_signals[COLUMNS_CHANGED] =
 998     g_signal_new (I_("columns-changed"),
 999                   G_TYPE_FROM_CLASS (o_class),
1000                   G_SIGNAL_RUN_LAST,
1001                   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
1002                   NULL, NULL,
1003                   _gtk_marshal_VOID__VOID,
1004                   G_TYPE_NONE, 0);
1005
1006   /**
1007    * GtkTreeView::cursor-changed:
1008    * @tree_view: the object on which the signal is emitted
1009    *
1010    * The position of the cursor (focused cell) has changed.
1011    */
1012   tree_view_signals[CURSOR_CHANGED] =
1013     g_signal_new (I_("cursor-changed"),
1014                   G_TYPE_FROM_CLASS (o_class),
1015                   G_SIGNAL_RUN_LAST,
1016                   G_STRUCT_OFFSET (GtkTreeViewClass, cursor_changed),
1017                   NULL, NULL,
1018                   _gtk_marshal_VOID__VOID,
1019                   G_TYPE_NONE, 0);
1020
1021   tree_view_signals[MOVE_CURSOR] =
1022     g_signal_new (I_("move-cursor"),
1023                   G_TYPE_FROM_CLASS (object_class),
1024                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1025                   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
1026                   NULL, NULL,
1027                   _gtk_marshal_BOOLEAN__ENUM_INT,
1028                   G_TYPE_BOOLEAN, 2,
1029                   GTK_TYPE_MOVEMENT_STEP,
1030                   G_TYPE_INT);
1031
1032   tree_view_signals[SELECT_ALL] =
1033     g_signal_new (I_("select-all"),
1034                   G_TYPE_FROM_CLASS (object_class),
1035                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1036                   G_STRUCT_OFFSET (GtkTreeViewClass, select_all),
1037                   NULL, NULL,
1038                   _gtk_marshal_BOOLEAN__VOID,
1039                   G_TYPE_BOOLEAN, 0);
1040
1041   tree_view_signals[UNSELECT_ALL] =
1042     g_signal_new (I_("unselect-all"),
1043                   G_TYPE_FROM_CLASS (object_class),
1044                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1045                   G_STRUCT_OFFSET (GtkTreeViewClass, unselect_all),
1046                   NULL, NULL,
1047                   _gtk_marshal_BOOLEAN__VOID,
1048                   G_TYPE_BOOLEAN, 0);
1049
1050   tree_view_signals[SELECT_CURSOR_ROW] =
1051     g_signal_new (I_("select-cursor-row"),
1052                   G_TYPE_FROM_CLASS (object_class),
1053                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1054                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_row),
1055                   NULL, NULL,
1056                   _gtk_marshal_BOOLEAN__BOOLEAN,
1057                   G_TYPE_BOOLEAN, 1,
1058                   G_TYPE_BOOLEAN);
1059
1060   tree_view_signals[TOGGLE_CURSOR_ROW] =
1061     g_signal_new (I_("toggle-cursor-row"),
1062                   G_TYPE_FROM_CLASS (object_class),
1063                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1064                   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
1065                   NULL, NULL,
1066                   _gtk_marshal_BOOLEAN__VOID,
1067                   G_TYPE_BOOLEAN, 0);
1068
1069   tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
1070     g_signal_new (I_("expand-collapse-cursor-row"),
1071                   G_TYPE_FROM_CLASS (object_class),
1072                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1073                   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
1074                   NULL, NULL,
1075                   _gtk_marshal_BOOLEAN__BOOLEAN_BOOLEAN_BOOLEAN,
1076                   G_TYPE_BOOLEAN, 3,
1077                   G_TYPE_BOOLEAN,
1078                   G_TYPE_BOOLEAN,
1079                   G_TYPE_BOOLEAN);
1080
1081   tree_view_signals[SELECT_CURSOR_PARENT] =
1082     g_signal_new (I_("select-cursor-parent"),
1083                   G_TYPE_FROM_CLASS (object_class),
1084                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1085                   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
1086                   NULL, NULL,
1087                   _gtk_marshal_BOOLEAN__VOID,
1088                   G_TYPE_BOOLEAN, 0);
1089
1090   tree_view_signals[START_INTERACTIVE_SEARCH] =
1091     g_signal_new (I_("start-interactive-search"),
1092                   G_TYPE_FROM_CLASS (object_class),
1093                   G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
1094                   G_STRUCT_OFFSET (GtkTreeViewClass, start_interactive_search),
1095                   NULL, NULL,
1096                   _gtk_marshal_BOOLEAN__VOID,
1097                   G_TYPE_BOOLEAN, 0);
1098
1099   /* Key bindings */
1100   gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0, TRUE,
1101                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1102   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Up, 0, TRUE,
1103                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1104
1105   gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0, TRUE,
1106                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1107   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Down, 0, TRUE,
1108                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1109
1110   gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK, FALSE,
1111                                   GTK_MOVEMENT_DISPLAY_LINES, -1);
1112
1113   gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK, FALSE,
1114                                   GTK_MOVEMENT_DISPLAY_LINES, 1);
1115
1116   gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0, TRUE,
1117                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1118   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Home, 0, TRUE,
1119                                   GTK_MOVEMENT_BUFFER_ENDS, -1);
1120
1121   gtk_tree_view_add_move_binding (binding_set, GDK_End, 0, TRUE,
1122                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1123   gtk_tree_view_add_move_binding (binding_set, GDK_KP_End, 0, TRUE,
1124                                   GTK_MOVEMENT_BUFFER_ENDS, 1);
1125
1126   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0, TRUE,
1127                                   GTK_MOVEMENT_PAGES, -1);
1128   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Up, 0, TRUE,
1129                                   GTK_MOVEMENT_PAGES, -1);
1130
1131   gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0, TRUE,
1132                                   GTK_MOVEMENT_PAGES, 1);
1133   gtk_tree_view_add_move_binding (binding_set, GDK_KP_Page_Down, 0, TRUE,
1134                                   GTK_MOVEMENT_PAGES, 1);
1135
1136
1137   gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move-cursor", 2,
1138                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1139                                 G_TYPE_INT, 1);
1140
1141   gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move-cursor", 2,
1142                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1143                                 G_TYPE_INT, -1);
1144
1145   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, 0, "move-cursor", 2,
1146                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1147                                 G_TYPE_INT, 1);
1148
1149   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, 0, "move-cursor", 2,
1150                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1151                                 G_TYPE_INT, -1);
1152
1153   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_CONTROL_MASK,
1154                                 "move-cursor", 2,
1155                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1156                                 G_TYPE_INT, 1);
1157
1158   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_CONTROL_MASK,
1159                                 "move-cursor", 2,
1160                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1161                                 G_TYPE_INT, -1);
1162
1163   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_CONTROL_MASK,
1164                                 "move-cursor", 2,
1165                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1166                                 G_TYPE_INT, 1);
1167
1168   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_CONTROL_MASK,
1169                                 "move-cursor", 2,
1170                                 G_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
1171                                 G_TYPE_INT, -1);
1172
1173   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1174   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_CONTROL_MASK, "toggle-cursor-row", 0);
1175
1176   gtk_binding_entry_add_signal (binding_set, GDK_a, GDK_CONTROL_MASK, "select-all", 0);
1177   gtk_binding_entry_add_signal (binding_set, GDK_slash, GDK_CONTROL_MASK, "select-all", 0);
1178
1179   gtk_binding_entry_add_signal (binding_set, GDK_A, GDK_CONTROL_MASK | GDK_SHIFT_MASK, "unselect-all", 0);
1180   gtk_binding_entry_add_signal (binding_set, GDK_backslash, GDK_CONTROL_MASK, "unselect-all", 0);
1181
1182   gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1183                                 G_TYPE_BOOLEAN, TRUE);
1184   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, GDK_SHIFT_MASK, "select-cursor-row", 1,
1185                                 G_TYPE_BOOLEAN, TRUE);
1186
1187   gtk_binding_entry_add_signal (binding_set, GDK_space, 0, "select-cursor-row", 1,
1188                                 G_TYPE_BOOLEAN, TRUE);
1189   gtk_binding_entry_add_signal (binding_set, GDK_KP_Space, 0, "select-cursor-row", 1,
1190                                 G_TYPE_BOOLEAN, TRUE);
1191   gtk_binding_entry_add_signal (binding_set, GDK_Return, 0, "select-cursor-row", 1,
1192                                 G_TYPE_BOOLEAN, TRUE);
1193   gtk_binding_entry_add_signal (binding_set, GDK_ISO_Enter, 0, "select-cursor-row", 1,
1194                                 G_TYPE_BOOLEAN, TRUE);
1195   gtk_binding_entry_add_signal (binding_set, GDK_KP_Enter, 0, "select-cursor-row", 1,
1196                                 G_TYPE_BOOLEAN, TRUE);
1197
1198   /* expand and collapse rows */
1199   gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand-collapse-cursor-row", 3,
1200                                 G_TYPE_BOOLEAN, TRUE,
1201                                 G_TYPE_BOOLEAN, TRUE,
1202                                 G_TYPE_BOOLEAN, FALSE);
1203
1204   gtk_binding_entry_add_signal (binding_set, GDK_asterisk, 0,
1205                                 "expand-collapse-cursor-row", 3,
1206                                 G_TYPE_BOOLEAN, TRUE,
1207                                 G_TYPE_BOOLEAN, TRUE,
1208                                 G_TYPE_BOOLEAN, TRUE);
1209   gtk_binding_entry_add_signal (binding_set, GDK_KP_Multiply, 0,
1210                                 "expand-collapse-cursor-row", 3,
1211                                 G_TYPE_BOOLEAN, TRUE,
1212                                 G_TYPE_BOOLEAN, TRUE,
1213                                 G_TYPE_BOOLEAN, TRUE);
1214
1215   gtk_binding_entry_add_signal (binding_set, GDK_slash, 0,
1216                                 "expand-collapse-cursor-row", 3,
1217                                 G_TYPE_BOOLEAN, TRUE,
1218                                 G_TYPE_BOOLEAN, FALSE,
1219                                 G_TYPE_BOOLEAN, FALSE);
1220   gtk_binding_entry_add_signal (binding_set, GDK_KP_Divide, 0,
1221                                 "expand-collapse-cursor-row", 3,
1222                                 G_TYPE_BOOLEAN, TRUE,
1223                                 G_TYPE_BOOLEAN, FALSE,
1224                                 G_TYPE_BOOLEAN, FALSE);
1225
1226   /* Not doable on US keyboards */
1227   gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1228                                 G_TYPE_BOOLEAN, TRUE,
1229                                 G_TYPE_BOOLEAN, TRUE,
1230                                 G_TYPE_BOOLEAN, TRUE);
1231   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand-collapse-cursor-row", 3,
1232                                 G_TYPE_BOOLEAN, TRUE,
1233                                 G_TYPE_BOOLEAN, TRUE,
1234                                 G_TYPE_BOOLEAN, FALSE);
1235   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1236                                 G_TYPE_BOOLEAN, TRUE,
1237                                 G_TYPE_BOOLEAN, TRUE,
1238                                 G_TYPE_BOOLEAN, TRUE);
1239   gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1240                                 G_TYPE_BOOLEAN, TRUE,
1241                                 G_TYPE_BOOLEAN, TRUE,
1242                                 G_TYPE_BOOLEAN, TRUE);
1243   gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK,
1244                                 "expand-collapse-cursor-row", 3,
1245                                 G_TYPE_BOOLEAN, FALSE,
1246                                 G_TYPE_BOOLEAN, TRUE,
1247                                 G_TYPE_BOOLEAN, TRUE);
1248   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right, GDK_SHIFT_MASK,
1249                                 "expand-collapse-cursor-row", 3,
1250                                 G_TYPE_BOOLEAN, FALSE,
1251                                 G_TYPE_BOOLEAN, TRUE,
1252                                 G_TYPE_BOOLEAN, TRUE);
1253   gtk_binding_entry_add_signal (binding_set, GDK_Right,
1254                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1255                                 "expand-collapse-cursor-row", 3,
1256                                 G_TYPE_BOOLEAN, FALSE,
1257                                 G_TYPE_BOOLEAN, TRUE,
1258                                 G_TYPE_BOOLEAN, TRUE);
1259   gtk_binding_entry_add_signal (binding_set, GDK_KP_Right,
1260                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1261                                 "expand-collapse-cursor-row", 3,
1262                                 G_TYPE_BOOLEAN, FALSE,
1263                                 G_TYPE_BOOLEAN, TRUE,
1264                                 G_TYPE_BOOLEAN, TRUE);
1265
1266   gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand-collapse-cursor-row", 3,
1267                                 G_TYPE_BOOLEAN, TRUE,
1268                                 G_TYPE_BOOLEAN, FALSE,
1269                                 G_TYPE_BOOLEAN, FALSE);
1270   gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1271                                 G_TYPE_BOOLEAN, TRUE,
1272                                 G_TYPE_BOOLEAN, FALSE,
1273                                 G_TYPE_BOOLEAN, TRUE);
1274   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand-collapse-cursor-row", 3,
1275                                 G_TYPE_BOOLEAN, TRUE,
1276                                 G_TYPE_BOOLEAN, FALSE,
1277                                 G_TYPE_BOOLEAN, FALSE);
1278   gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand-collapse-cursor-row", 3,
1279                                 G_TYPE_BOOLEAN, TRUE,
1280                                 G_TYPE_BOOLEAN, FALSE,
1281                                 G_TYPE_BOOLEAN, TRUE);
1282   gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK,
1283                                 "expand-collapse-cursor-row", 3,
1284                                 G_TYPE_BOOLEAN, FALSE,
1285                                 G_TYPE_BOOLEAN, FALSE,
1286                                 G_TYPE_BOOLEAN, TRUE);
1287   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left, GDK_SHIFT_MASK,
1288                                 "expand-collapse-cursor-row", 3,
1289                                 G_TYPE_BOOLEAN, FALSE,
1290                                 G_TYPE_BOOLEAN, FALSE,
1291                                 G_TYPE_BOOLEAN, TRUE);
1292   gtk_binding_entry_add_signal (binding_set, GDK_Left,
1293                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1294                                 "expand-collapse-cursor-row", 3,
1295                                 G_TYPE_BOOLEAN, FALSE,
1296                                 G_TYPE_BOOLEAN, FALSE,
1297                                 G_TYPE_BOOLEAN, TRUE);
1298   gtk_binding_entry_add_signal (binding_set, GDK_KP_Left,
1299                                 GDK_CONTROL_MASK | GDK_SHIFT_MASK,
1300                                 "expand-collapse-cursor-row", 3,
1301                                 G_TYPE_BOOLEAN, FALSE,
1302                                 G_TYPE_BOOLEAN, FALSE,
1303                                 G_TYPE_BOOLEAN, TRUE);
1304
1305   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select-cursor-parent", 0);
1306   gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, GDK_CONTROL_MASK, "select-cursor-parent", 0);
1307
1308   gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "start-interactive-search", 0);
1309
1310   gtk_binding_entry_add_signal (binding_set, GDK_F, GDK_CONTROL_MASK, "start-interactive-search", 0);
1311
1312   g_type_class_add_private (o_class, sizeof (GtkTreeViewPrivate));
1313 }
1314
1315 static void
1316 gtk_tree_view_buildable_init (GtkBuildableIface *iface)
1317 {
1318   iface->add_child = gtk_tree_view_buildable_add_child;
1319 }
1320
1321 static void
1322 gtk_tree_view_init (GtkTreeView *tree_view)
1323 {
1324   tree_view->priv = G_TYPE_INSTANCE_GET_PRIVATE (tree_view, GTK_TYPE_TREE_VIEW, GtkTreeViewPrivate);
1325
1326   GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);
1327
1328   gtk_widget_set_redraw_on_allocate (GTK_WIDGET (tree_view), FALSE);
1329
1330   tree_view->priv->flags =  GTK_TREE_VIEW_SHOW_EXPANDERS
1331                             | GTK_TREE_VIEW_DRAW_KEYFOCUS
1332                             | GTK_TREE_VIEW_HEADERS_VISIBLE;
1333
1334   /* We need some padding */
1335   tree_view->priv->dy = 0;
1336   tree_view->priv->cursor_offset = 0;
1337   tree_view->priv->n_columns = 0;
1338   tree_view->priv->header_height = 1;
1339   tree_view->priv->x_drag = 0;
1340   tree_view->priv->drag_pos = -1;
1341   tree_view->priv->header_has_focus = FALSE;
1342   tree_view->priv->pressed_button = -1;
1343   tree_view->priv->press_start_x = -1;
1344   tree_view->priv->press_start_y = -1;
1345   tree_view->priv->reorderable = FALSE;
1346   tree_view->priv->presize_handler_timer = 0;
1347   tree_view->priv->scroll_sync_timer = 0;
1348   tree_view->priv->fixed_height = -1;
1349   tree_view->priv->fixed_height_mode = FALSE;
1350   tree_view->priv->fixed_height_check = 0;
1351   gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
1352   tree_view->priv->selection = _gtk_tree_selection_new_with_tree_view (tree_view);
1353   tree_view->priv->enable_search = TRUE;
1354   tree_view->priv->search_column = -1;
1355   tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
1356   tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
1357   tree_view->priv->search_custom_entry_set = FALSE;
1358   tree_view->priv->typeselect_flush_timeout = 0;
1359   tree_view->priv->init_hadjust_value = TRUE;
1360   tree_view->priv->width = 0;
1361
1362   tree_view->priv->hover_selection = FALSE;
1363   tree_view->priv->hover_expand = FALSE;
1364
1365   tree_view->priv->level_indentation = 0;
1366
1367   tree_view->priv->rubber_banding_enable = FALSE;
1368
1369   tree_view->priv->grid_lines = GTK_TREE_VIEW_GRID_LINES_NONE;
1370   tree_view->priv->tree_lines_enabled = FALSE;
1371
1372   tree_view->priv->tooltip_column = -1;
1373
1374   tree_view->priv->post_validation_flag = FALSE;
1375 }
1376
1377 \f
1378
1379 /* GObject Methods
1380  */
1381
1382 static void
1383 gtk_tree_view_set_property (GObject         *object,
1384                             guint            prop_id,
1385                             const GValue    *value,
1386                             GParamSpec      *pspec)
1387 {
1388   GtkTreeView *tree_view;
1389
1390   tree_view = GTK_TREE_VIEW (object);
1391
1392   switch (prop_id)
1393     {
1394     case PROP_MODEL:
1395       gtk_tree_view_set_model (tree_view, g_value_get_object (value));
1396       break;
1397     case PROP_HADJUSTMENT:
1398       gtk_tree_view_set_hadjustment (tree_view, g_value_get_object (value));
1399       break;
1400     case PROP_VADJUSTMENT:
1401       gtk_tree_view_set_vadjustment (tree_view, g_value_get_object (value));
1402       break;
1403     case PROP_HEADERS_VISIBLE:
1404       gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
1405       break;
1406     case PROP_HEADERS_CLICKABLE:
1407       gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
1408       break;
1409     case PROP_EXPANDER_COLUMN:
1410       gtk_tree_view_set_expander_column (tree_view, g_value_get_object (value));
1411       break;
1412     case PROP_REORDERABLE:
1413       gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
1414       break;
1415     case PROP_RULES_HINT:
1416       gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
1417       break;
1418     case PROP_ENABLE_SEARCH:
1419       gtk_tree_view_set_enable_search (tree_view, g_value_get_boolean (value));
1420       break;
1421     case PROP_SEARCH_COLUMN:
1422       gtk_tree_view_set_search_column (tree_view, g_value_get_int (value));
1423       break;
1424     case PROP_FIXED_HEIGHT_MODE:
1425       gtk_tree_view_set_fixed_height_mode (tree_view, g_value_get_boolean (value));
1426       break;
1427     case PROP_HOVER_SELECTION:
1428       tree_view->priv->hover_selection = g_value_get_boolean (value);
1429       break;
1430     case PROP_HOVER_EXPAND:
1431       tree_view->priv->hover_expand = g_value_get_boolean (value);
1432       break;
1433     case PROP_SHOW_EXPANDERS:
1434       gtk_tree_view_set_show_expanders (tree_view, g_value_get_boolean (value));
1435       break;
1436     case PROP_LEVEL_INDENTATION:
1437       tree_view->priv->level_indentation = g_value_get_int (value);
1438       break;
1439     case PROP_RUBBER_BANDING:
1440       tree_view->priv->rubber_banding_enable = g_value_get_boolean (value);
1441       break;
1442     case PROP_ENABLE_GRID_LINES:
1443       gtk_tree_view_set_grid_lines (tree_view, g_value_get_enum (value));
1444       break;
1445     case PROP_ENABLE_TREE_LINES:
1446       gtk_tree_view_set_enable_tree_lines (tree_view, g_value_get_boolean (value));
1447       break;
1448     case PROP_TOOLTIP_COLUMN:
1449       gtk_tree_view_set_tooltip_column (tree_view, g_value_get_int (value));
1450       break;
1451     default:
1452       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1453       break;
1454     }
1455 }
1456
1457 static void
1458 gtk_tree_view_get_property (GObject    *object,
1459                             guint       prop_id,
1460                             GValue     *value,
1461                             GParamSpec *pspec)
1462 {
1463   GtkTreeView *tree_view;
1464
1465   tree_view = GTK_TREE_VIEW (object);
1466
1467   switch (prop_id)
1468     {
1469     case PROP_MODEL:
1470       g_value_set_object (value, tree_view->priv->model);
1471       break;
1472     case PROP_HADJUSTMENT:
1473       g_value_set_object (value, tree_view->priv->hadjustment);
1474       break;
1475     case PROP_VADJUSTMENT:
1476       g_value_set_object (value, tree_view->priv->vadjustment);
1477       break;
1478     case PROP_HEADERS_VISIBLE:
1479       g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
1480       break;
1481     case PROP_HEADERS_CLICKABLE:
1482       g_value_set_boolean (value, gtk_tree_view_get_headers_clickable (tree_view));
1483       break;
1484     case PROP_EXPANDER_COLUMN:
1485       g_value_set_object (value, tree_view->priv->expander_column);
1486       break;
1487     case PROP_REORDERABLE:
1488       g_value_set_boolean (value, tree_view->priv->reorderable);
1489       break;
1490     case PROP_RULES_HINT:
1491       g_value_set_boolean (value, tree_view->priv->has_rules);
1492       break;
1493     case PROP_ENABLE_SEARCH:
1494       g_value_set_boolean (value, tree_view->priv->enable_search);
1495       break;
1496     case PROP_SEARCH_COLUMN:
1497       g_value_set_int (value, tree_view->priv->search_column);
1498       break;
1499     case PROP_FIXED_HEIGHT_MODE:
1500       g_value_set_boolean (value, tree_view->priv->fixed_height_mode);
1501       break;
1502     case PROP_HOVER_SELECTION:
1503       g_value_set_boolean (value, tree_view->priv->hover_selection);
1504       break;
1505     case PROP_HOVER_EXPAND:
1506       g_value_set_boolean (value, tree_view->priv->hover_expand);
1507       break;
1508     case PROP_SHOW_EXPANDERS:
1509       g_value_set_boolean (value, GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS));
1510       break;
1511     case PROP_LEVEL_INDENTATION:
1512       g_value_set_int (value, tree_view->priv->level_indentation);
1513       break;
1514     case PROP_RUBBER_BANDING:
1515       g_value_set_boolean (value, tree_view->priv->rubber_banding_enable);
1516       break;
1517     case PROP_ENABLE_GRID_LINES:
1518       g_value_set_enum (value, tree_view->priv->grid_lines);
1519       break;
1520     case PROP_ENABLE_TREE_LINES:
1521       g_value_set_boolean (value, tree_view->priv->tree_lines_enabled);
1522       break;
1523     case PROP_TOOLTIP_COLUMN:
1524       g_value_set_int (value, tree_view->priv->tooltip_column);
1525       break;
1526     default:
1527       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1528       break;
1529     }
1530 }
1531
1532 static void
1533 gtk_tree_view_finalize (GObject *object)
1534 {
1535   G_OBJECT_CLASS (gtk_tree_view_parent_class)->finalize (object);
1536 }
1537
1538 \f
1539
1540 static void
1541 gtk_tree_view_buildable_add_child (GtkBuildable *tree_view,
1542                                    GtkBuilder  *builder,
1543                                    GObject     *child,
1544                                    const gchar *type)
1545 {
1546   gtk_tree_view_append_column (GTK_TREE_VIEW (tree_view), GTK_TREE_VIEW_COLUMN (child));
1547 }
1548
1549 /* GtkObject Methods
1550  */
1551
1552 static void
1553 gtk_tree_view_free_rbtree (GtkTreeView *tree_view)
1554 {
1555   _gtk_rbtree_free (tree_view->priv->tree);
1556
1557   tree_view->priv->tree = NULL;
1558   tree_view->priv->button_pressed_node = NULL;
1559   tree_view->priv->button_pressed_tree = NULL;
1560   tree_view->priv->prelight_tree = NULL;
1561   tree_view->priv->prelight_node = NULL;
1562   tree_view->priv->expanded_collapsed_node = NULL;
1563   tree_view->priv->expanded_collapsed_tree = NULL;
1564 }
1565
1566 static void
1567 gtk_tree_view_destroy (GtkObject *object)
1568 {
1569   GtkTreeView *tree_view = GTK_TREE_VIEW (object);
1570   GList *list;
1571
1572   gtk_tree_view_stop_editing (tree_view, TRUE);
1573
1574   if (tree_view->priv->columns != NULL)
1575     {
1576       list = tree_view->priv->columns;
1577       while (list)
1578         {
1579           GtkTreeViewColumn *column;
1580           column = GTK_TREE_VIEW_COLUMN (list->data);
1581           list = list->next;
1582           gtk_tree_view_remove_column (tree_view, column);
1583         }
1584       tree_view->priv->columns = NULL;
1585     }
1586
1587   if (tree_view->priv->tree != NULL)
1588     {
1589       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
1590
1591       gtk_tree_view_free_rbtree (tree_view);
1592     }
1593
1594   if (tree_view->priv->selection != NULL)
1595     {
1596       _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
1597       g_object_unref (tree_view->priv->selection);
1598       tree_view->priv->selection = NULL;
1599     }
1600
1601   if (tree_view->priv->scroll_to_path != NULL)
1602     {
1603       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
1604       tree_view->priv->scroll_to_path = NULL;
1605     }
1606
1607   if (tree_view->priv->drag_dest_row != NULL)
1608     {
1609       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
1610       tree_view->priv->drag_dest_row = NULL;
1611     }
1612
1613   if (tree_view->priv->last_button_press != NULL)
1614     {
1615       gtk_tree_row_reference_free (tree_view->priv->last_button_press);
1616       tree_view->priv->last_button_press = NULL;
1617     }
1618
1619   if (tree_view->priv->last_button_press_2 != NULL)
1620     {
1621       gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
1622       tree_view->priv->last_button_press_2 = NULL;
1623     }
1624
1625   if (tree_view->priv->top_row != NULL)
1626     {
1627       gtk_tree_row_reference_free (tree_view->priv->top_row);
1628       tree_view->priv->top_row = NULL;
1629     }
1630
1631   if (tree_view->priv->column_drop_func_data &&
1632       tree_view->priv->column_drop_func_data_destroy)
1633     {
1634       tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
1635       tree_view->priv->column_drop_func_data = NULL;
1636     }
1637
1638   if (tree_view->priv->destroy_count_destroy &&
1639       tree_view->priv->destroy_count_data)
1640     {
1641       tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
1642       tree_view->priv->destroy_count_data = NULL;
1643     }
1644
1645   gtk_tree_row_reference_free (tree_view->priv->cursor);
1646   tree_view->priv->cursor = NULL;
1647
1648   gtk_tree_row_reference_free (tree_view->priv->anchor);
1649   tree_view->priv->anchor = NULL;
1650
1651   /* destroy interactive search dialog */
1652   if (tree_view->priv->search_window)
1653     {
1654       gtk_widget_destroy (tree_view->priv->search_window);
1655       tree_view->priv->search_window = NULL;
1656       tree_view->priv->search_entry = NULL;
1657       if (tree_view->priv->typeselect_flush_timeout)
1658         {
1659           g_source_remove (tree_view->priv->typeselect_flush_timeout);
1660           tree_view->priv->typeselect_flush_timeout = 0;
1661         }
1662     }
1663
1664   if (tree_view->priv->search_destroy && tree_view->priv->search_user_data)
1665     {
1666       tree_view->priv->search_destroy (tree_view->priv->search_user_data);
1667       tree_view->priv->search_user_data = NULL;
1668     }
1669
1670   if (tree_view->priv->search_position_destroy && tree_view->priv->search_position_user_data)
1671     {
1672       tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
1673       tree_view->priv->search_position_user_data = NULL;
1674     }
1675
1676   if (tree_view->priv->row_separator_destroy && tree_view->priv->row_separator_data)
1677     {
1678       tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
1679       tree_view->priv->row_separator_data = NULL;
1680     }
1681
1682   gtk_tree_view_set_model (tree_view, NULL);
1683
1684   if (tree_view->priv->hadjustment)
1685     {
1686       g_object_unref (tree_view->priv->hadjustment);
1687       tree_view->priv->hadjustment = NULL;
1688     }
1689   if (tree_view->priv->vadjustment)
1690     {
1691       g_object_unref (tree_view->priv->vadjustment);
1692       tree_view->priv->vadjustment = NULL;
1693     }
1694
1695   GTK_OBJECT_CLASS (gtk_tree_view_parent_class)->destroy (object);
1696 }
1697
1698 \f
1699
1700 /* GtkWidget Methods
1701  */
1702
1703 /* GtkWidget::map helper */
1704 static void
1705 gtk_tree_view_map_buttons (GtkTreeView *tree_view)
1706 {
1707   GList *list;
1708
1709   g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
1710
1711   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
1712     {
1713       GtkTreeViewColumn *column;
1714
1715       for (list = tree_view->priv->columns; list; list = list->next)
1716         {
1717           column = list->data;
1718           if (GTK_WIDGET_VISIBLE (column->button) &&
1719               !GTK_WIDGET_MAPPED (column->button))
1720             gtk_widget_map (column->button);
1721         }
1722       for (list = tree_view->priv->columns; list; list = list->next)
1723         {
1724           column = list->data;
1725           if (column->visible == FALSE)
1726             continue;
1727           if (column->resizable)
1728             {
1729               gdk_window_raise (column->window);
1730               gdk_window_show (column->window);
1731             }
1732           else
1733             gdk_window_hide (column->window);
1734         }
1735       gdk_window_show (tree_view->priv->header_window);
1736     }
1737 }
1738
1739 static void
1740 gtk_tree_view_map (GtkWidget *widget)
1741 {
1742   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1743   GList *tmp_list;
1744
1745   GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
1746
1747   tmp_list = tree_view->priv->children;
1748   while (tmp_list)
1749     {
1750       GtkTreeViewChild *child = tmp_list->data;
1751       tmp_list = tmp_list->next;
1752
1753       if (GTK_WIDGET_VISIBLE (child->widget))
1754         {
1755           if (!GTK_WIDGET_MAPPED (child->widget))
1756             gtk_widget_map (child->widget);
1757         }
1758     }
1759   gdk_window_show (tree_view->priv->bin_window);
1760
1761   gtk_tree_view_map_buttons (tree_view);
1762
1763   gdk_window_show (widget->window);
1764 }
1765
1766 static void
1767 gtk_tree_view_realize (GtkWidget *widget)
1768 {
1769   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1770   GList *tmp_list;
1771   GdkWindowAttr attributes;
1772   gint attributes_mask;
1773
1774   GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
1775
1776   /* Make the main, clipping window */
1777   attributes.window_type = GDK_WINDOW_CHILD;
1778   attributes.x = widget->allocation.x;
1779   attributes.y = widget->allocation.y;
1780   attributes.width = widget->allocation.width;
1781   attributes.height = widget->allocation.height;
1782   attributes.wclass = GDK_INPUT_OUTPUT;
1783   attributes.visual = gtk_widget_get_visual (widget);
1784   attributes.colormap = gtk_widget_get_colormap (widget);
1785   attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;
1786
1787   attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
1788
1789   widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
1790                                    &attributes, attributes_mask);
1791   gdk_window_set_user_data (widget->window, widget);
1792
1793   /* Make the window for the tree */
1794   attributes.x = 0;
1795   attributes.y = TREE_VIEW_HEADER_HEIGHT (tree_view);
1796   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1797   attributes.height = widget->allocation.height;
1798   attributes.event_mask = (GDK_EXPOSURE_MASK |
1799                            GDK_SCROLL_MASK |
1800                            GDK_POINTER_MOTION_MASK |
1801                            GDK_ENTER_NOTIFY_MASK |
1802                            GDK_LEAVE_NOTIFY_MASK |
1803                            GDK_BUTTON_PRESS_MASK |
1804                            GDK_BUTTON_RELEASE_MASK |
1805                            gtk_widget_get_events (widget));
1806
1807   tree_view->priv->bin_window = gdk_window_new (widget->window,
1808                                                 &attributes, attributes_mask);
1809   gdk_window_set_user_data (tree_view->priv->bin_window, widget);
1810
1811   /* Make the column header window */
1812   attributes.x = 0;
1813   attributes.y = 0;
1814   attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
1815   attributes.height = tree_view->priv->header_height;
1816   attributes.event_mask = (GDK_EXPOSURE_MASK |
1817                            GDK_SCROLL_MASK |
1818                            GDK_BUTTON_PRESS_MASK |
1819                            GDK_BUTTON_RELEASE_MASK |
1820                            GDK_KEY_PRESS_MASK |
1821                            GDK_KEY_RELEASE_MASK |
1822                            gtk_widget_get_events (widget));
1823
1824   tree_view->priv->header_window = gdk_window_new (widget->window,
1825                                                    &attributes, attributes_mask);
1826   gdk_window_set_user_data (tree_view->priv->header_window, widget);
1827
1828   /* Add them all up. */
1829   widget->style = gtk_style_attach (widget->style, widget->window);
1830   gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
1831   gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
1832   gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
1833
1834   tmp_list = tree_view->priv->children;
1835   while (tmp_list)
1836     {
1837       GtkTreeViewChild *child = tmp_list->data;
1838       tmp_list = tmp_list->next;
1839
1840       gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
1841     }
1842
1843   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
1844     _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));
1845
1846   /* Need to call those here, since they create GCs */
1847   gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
1848   gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
1849
1850   install_presize_handler (tree_view);
1851 }
1852
1853 static void
1854 gtk_tree_view_unrealize (GtkWidget *widget)
1855 {
1856   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
1857   GtkTreeViewPrivate *priv = tree_view->priv;
1858   GList *list;
1859
1860   if (priv->scroll_timeout != 0)
1861     {
1862       g_source_remove (priv->scroll_timeout);
1863       priv->scroll_timeout = 0;
1864     }
1865
1866   if (priv->auto_expand_timeout != 0)
1867     {
1868       g_source_remove (priv->auto_expand_timeout);
1869       priv->auto_expand_timeout = 0;
1870     }
1871
1872   if (priv->open_dest_timeout != 0)
1873     {
1874       g_source_remove (priv->open_dest_timeout);
1875       priv->open_dest_timeout = 0;
1876     }
1877
1878   remove_expand_collapse_timeout (tree_view);
1879
1880   if (priv->presize_handler_timer != 0)
1881     {
1882       g_source_remove (priv->presize_handler_timer);
1883       priv->presize_handler_timer = 0;
1884     }
1885
1886   if (priv->validate_rows_timer != 0)
1887     {
1888       g_source_remove (priv->validate_rows_timer);
1889       priv->validate_rows_timer = 0;
1890     }
1891
1892   if (priv->scroll_sync_timer != 0)
1893     {
1894       g_source_remove (priv->scroll_sync_timer);
1895       priv->scroll_sync_timer = 0;
1896     }
1897
1898   if (priv->typeselect_flush_timeout)
1899     {
1900       g_source_remove (priv->typeselect_flush_timeout);
1901       priv->typeselect_flush_timeout = 0;
1902     }
1903
1904   for (list = priv->columns; list; list = list->next)
1905     _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));
1906
1907   gdk_window_set_user_data (priv->bin_window, NULL);
1908   gdk_window_destroy (priv->bin_window);
1909   priv->bin_window = NULL;
1910
1911   gdk_window_set_user_data (priv->header_window, NULL);
1912   gdk_window_destroy (priv->header_window);
1913   priv->header_window = NULL;
1914
1915   if (priv->drag_window)
1916     {
1917       gdk_window_set_user_data (priv->drag_window, NULL);
1918       gdk_window_destroy (priv->drag_window);
1919       priv->drag_window = NULL;
1920     }
1921
1922   if (priv->drag_highlight_window)
1923     {
1924       gdk_window_set_user_data (priv->drag_highlight_window, NULL);
1925       gdk_window_destroy (priv->drag_highlight_window);
1926       priv->drag_highlight_window = NULL;
1927     }
1928
1929   if (priv->tree_line_gc)
1930     {
1931       g_object_unref (priv->tree_line_gc);
1932       priv->tree_line_gc = NULL;
1933     }
1934
1935   if (priv->grid_line_gc)
1936     {
1937       g_object_unref (priv->grid_line_gc);
1938       priv->grid_line_gc = NULL;
1939     }
1940
1941   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->unrealize (widget);
1942 }
1943
1944 /* GtkWidget::size_request helper */
1945 static void
1946 gtk_tree_view_size_request_columns (GtkTreeView *tree_view)
1947 {
1948   GList *list;
1949
1950   tree_view->priv->header_height = 0;
1951
1952   if (tree_view->priv->model)
1953     {
1954       for (list = tree_view->priv->columns; list; list = list->next)
1955         {
1956           GtkRequisition requisition;
1957           GtkTreeViewColumn *column = list->data;
1958
1959           if (column->button == NULL)
1960             continue;
1961
1962           column = list->data;
1963
1964           gtk_widget_size_request (column->button, &requisition);
1965           column->button_request = requisition.width;
1966           tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
1967         }
1968     }
1969 }
1970
1971
1972 /* Called only by ::size_request */
1973 static void
1974 gtk_tree_view_update_size (GtkTreeView *tree_view)
1975 {
1976   GList *list;
1977   GtkTreeViewColumn *column;
1978   gint i;
1979
1980   if (tree_view->priv->model == NULL)
1981     {
1982       tree_view->priv->width = 0;
1983       tree_view->priv->prev_width = 0;
1984       tree_view->priv->height = 0;
1985       return;
1986     }
1987
1988   tree_view->priv->prev_width = tree_view->priv->width;
1989   tree_view->priv->width = 0;
1990
1991   /* keep this in sync with size_allocate below */
1992   for (list = tree_view->priv->columns, i = 0; list; list = list->next, i++)
1993     {
1994       gint real_requested_width = 0;
1995       column = list->data;
1996       if (!column->visible)
1997         continue;
1998
1999       if (column->use_resized_width)
2000         {
2001           real_requested_width = column->resized_width;
2002         }
2003       else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2004         {
2005           real_requested_width = column->fixed_width;
2006         }
2007       else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2008         {
2009           real_requested_width = MAX (column->requested_width, column->button_request);
2010         }
2011       else
2012         {
2013           real_requested_width = column->requested_width;
2014         }
2015
2016       if (column->min_width != -1)
2017         real_requested_width = MAX (real_requested_width, column->min_width);
2018       if (column->max_width != -1)
2019         real_requested_width = MIN (real_requested_width, column->max_width);
2020
2021       tree_view->priv->width += real_requested_width;
2022     }
2023
2024   if (tree_view->priv->tree == NULL)
2025     tree_view->priv->height = 0;
2026   else
2027     tree_view->priv->height = tree_view->priv->tree->root->offset;
2028 }
2029
2030 static void
2031 gtk_tree_view_size_request (GtkWidget      *widget,
2032                             GtkRequisition *requisition)
2033 {
2034   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2035   GList *tmp_list;
2036
2037   /* we validate some rows initially just to make sure we have some size.
2038    * In practice, with a lot of static lists, this should get a good width.
2039    */
2040   do_validate_rows (tree_view, FALSE);
2041   gtk_tree_view_size_request_columns (tree_view);
2042   gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
2043
2044   requisition->width = tree_view->priv->width;
2045   requisition->height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
2046
2047   tmp_list = tree_view->priv->children;
2048
2049   while (tmp_list)
2050     {
2051       GtkTreeViewChild *child = tmp_list->data;
2052       GtkRequisition child_requisition;
2053
2054       tmp_list = tmp_list->next;
2055
2056       if (GTK_WIDGET_VISIBLE (child->widget))
2057         gtk_widget_size_request (child->widget, &child_requisition);
2058     }
2059 }
2060
2061
2062 static void
2063 invalidate_column (GtkTreeView       *tree_view,
2064                    GtkTreeViewColumn *column)
2065 {
2066   gint column_offset = 0;
2067   GList *list;
2068   GtkWidget *widget = GTK_WIDGET (tree_view);
2069   gboolean rtl;
2070
2071   if (!GTK_WIDGET_REALIZED (widget))
2072     return;
2073
2074   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2075   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2076        list;
2077        list = (rtl ? list->prev : list->next))
2078     {
2079       GtkTreeViewColumn *tmpcolumn = list->data;
2080       if (tmpcolumn == column)
2081         {
2082           GdkRectangle invalid_rect;
2083
2084           invalid_rect.x = column_offset;
2085           invalid_rect.y = 0;
2086           invalid_rect.width = column->width;
2087           invalid_rect.height = widget->allocation.height;
2088
2089           gdk_window_invalidate_rect (widget->window, &invalid_rect, TRUE);
2090           break;
2091         }
2092
2093       column_offset += tmpcolumn->width;
2094     }
2095 }
2096
2097 static void
2098 invalidate_last_column (GtkTreeView *tree_view)
2099 {
2100   GList *last_column;
2101   gboolean rtl;
2102
2103   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2104
2105   for (last_column = (rtl ? g_list_first (tree_view->priv->columns) : g_list_last (tree_view->priv->columns));
2106        last_column;
2107        last_column = (rtl ? last_column->next : last_column->prev))
2108     {
2109       if (GTK_TREE_VIEW_COLUMN (last_column->data)->visible)
2110         {
2111           invalidate_column (tree_view, last_column->data);
2112           return;
2113         }
2114     }
2115 }
2116
2117 static gint
2118 gtk_tree_view_get_real_requested_width_from_column (GtkTreeView       *tree_view,
2119                                                     GtkTreeViewColumn *column)
2120 {
2121   gint real_requested_width;
2122
2123   if (column->use_resized_width)
2124     {
2125       real_requested_width = column->resized_width;
2126     }
2127   else if (column->column_type == GTK_TREE_VIEW_COLUMN_FIXED)
2128     {
2129       real_requested_width = column->fixed_width;
2130     }
2131   else if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
2132     {
2133       real_requested_width = MAX (column->requested_width, column->button_request);
2134     }
2135   else
2136     {
2137       real_requested_width = column->requested_width;
2138       if (real_requested_width < 0)
2139         real_requested_width = 0;
2140     }
2141
2142   if (column->min_width != -1)
2143     real_requested_width = MAX (real_requested_width, column->min_width);
2144   if (column->max_width != -1)
2145     real_requested_width = MIN (real_requested_width, column->max_width);
2146
2147   return real_requested_width;
2148 }
2149
2150 /* GtkWidget::size_allocate helper */
2151 static void
2152 gtk_tree_view_size_allocate_columns (GtkWidget *widget,
2153                                      gboolean  *width_changed)
2154 {
2155   GtkTreeView *tree_view;
2156   GList *list, *first_column, *last_column;
2157   GtkTreeViewColumn *column;
2158   GtkAllocation allocation;
2159   gint width = 0;
2160   gint extra, extra_per_column, extra_for_last;
2161   gint full_requested_width = 0;
2162   gint number_of_expand_columns = 0;
2163   gboolean column_changed = FALSE;
2164   gboolean rtl;
2165   gboolean update_expand;
2166
2167   tree_view = GTK_TREE_VIEW (widget);
2168
2169   for (last_column = g_list_last (tree_view->priv->columns);
2170        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
2171        last_column = last_column->prev)
2172     ;
2173   if (last_column == NULL)
2174     return;
2175
2176   for (first_column = g_list_first (tree_view->priv->columns);
2177        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
2178        first_column = first_column->next)
2179     ;
2180
2181   allocation.y = 0;
2182   allocation.height = tree_view->priv->header_height;
2183
2184   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2185
2186   /* find out how many extra space and expandable columns we have */
2187   for (list = tree_view->priv->columns; list != last_column->next; list = list->next)
2188     {
2189       column = (GtkTreeViewColumn *)list->data;
2190
2191       if (!column->visible)
2192         continue;
2193
2194       full_requested_width += gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2195
2196       if (column->expand)
2197         number_of_expand_columns++;
2198     }
2199
2200   /* Only update the expand value if the width of the widget has changed,
2201    * or the number of expand columns has changed, or if there are no expand
2202    * columns, or if we didn't have an size-allocation yet after the
2203    * last validated node.
2204    */
2205   update_expand = (width_changed && *width_changed == TRUE)
2206       || number_of_expand_columns != tree_view->priv->last_number_of_expand_columns
2207       || number_of_expand_columns == 0
2208       || tree_view->priv->post_validation_flag == TRUE;
2209
2210   tree_view->priv->post_validation_flag = FALSE;
2211
2212   if (!update_expand)
2213     {
2214       extra = tree_view->priv->last_extra_space;
2215       extra_for_last = MAX (widget->allocation.width - full_requested_width - extra, 0);
2216     }
2217   else
2218     {
2219       extra = MAX (widget->allocation.width - full_requested_width, 0);
2220       extra_for_last = 0;
2221
2222       tree_view->priv->last_extra_space = extra;
2223     }
2224
2225   if (number_of_expand_columns > 0)
2226     extra_per_column = extra/number_of_expand_columns;
2227   else
2228     extra_per_column = 0;
2229
2230   if (update_expand)
2231     {
2232       tree_view->priv->last_extra_space_per_column = extra_per_column;
2233       tree_view->priv->last_number_of_expand_columns = number_of_expand_columns;
2234     }
2235
2236   for (list = (rtl ? last_column : first_column);
2237        list != (rtl ? first_column->prev : last_column->next);
2238        list = (rtl ? list->prev : list->next))
2239     {
2240       gint real_requested_width = 0;
2241       gint old_width;
2242
2243       column = list->data;
2244       old_width = column->width;
2245
2246       if (!column->visible)
2247         continue;
2248
2249       /* We need to handle the dragged button specially.
2250        */
2251       if (column == tree_view->priv->drag_column)
2252         {
2253           GtkAllocation drag_allocation;
2254           gdk_drawable_get_size (tree_view->priv->drag_window,
2255                                  &(drag_allocation.width),
2256                                  &(drag_allocation.height));
2257           drag_allocation.x = 0;
2258           drag_allocation.y = 0;
2259           gtk_widget_size_allocate (tree_view->priv->drag_column->button,
2260                                     &drag_allocation);
2261           width += drag_allocation.width;
2262           continue;
2263         }
2264
2265       real_requested_width = gtk_tree_view_get_real_requested_width_from_column (tree_view, column);
2266
2267       allocation.x = width;
2268       column->width = real_requested_width;
2269
2270       if (column->expand)
2271         {
2272           if (number_of_expand_columns == 1)
2273             {
2274               /* We add the remander to the last column as
2275                * */
2276               column->width += extra;
2277             }
2278           else
2279             {
2280               column->width += extra_per_column;
2281               extra -= extra_per_column;
2282               number_of_expand_columns --;
2283             }
2284         }
2285       else if (number_of_expand_columns == 0 &&
2286                list == last_column)
2287         {
2288           column->width += extra;
2289         }
2290
2291       /* In addition to expand, the last column can get even more
2292        * extra space so all available space is filled up.
2293        */
2294       if (extra_for_last > 0 && list == last_column)
2295         column->width += extra_for_last;
2296
2297       g_object_notify (G_OBJECT (column), "width");
2298
2299       allocation.width = column->width;
2300       width += column->width;
2301
2302       if (column->width > old_width)
2303         column_changed = TRUE;
2304
2305       gtk_widget_size_allocate (column->button, &allocation);
2306
2307       if (column->window)
2308         gdk_window_move_resize (column->window,
2309                                 allocation.x + (rtl ? 0 : allocation.width) - TREE_VIEW_DRAG_WIDTH/2,
2310                                 allocation.y,
2311                                 TREE_VIEW_DRAG_WIDTH, allocation.height);
2312     }
2313
2314   /* We change the width here.  The user might have been resizing columns,
2315    * so the total width of the tree view changes.
2316    */
2317   tree_view->priv->width = width;
2318   if (width_changed)
2319     *width_changed = TRUE;
2320
2321   if (column_changed)
2322     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
2323 }
2324
2325
2326 static void
2327 gtk_tree_view_size_allocate (GtkWidget     *widget,
2328                              GtkAllocation *allocation)
2329 {
2330   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2331   GList *tmp_list;
2332   gboolean width_changed = FALSE;
2333   gint old_width = widget->allocation.width;
2334
2335   if (allocation->width != widget->allocation.width)
2336     width_changed = TRUE;
2337
2338   widget->allocation = *allocation;
2339
2340   tmp_list = tree_view->priv->children;
2341
2342   while (tmp_list)
2343     {
2344       GtkAllocation allocation;
2345
2346       GtkTreeViewChild *child = tmp_list->data;
2347       tmp_list = tmp_list->next;
2348
2349       /* totally ignore our child's requisition */
2350       allocation.x = child->x;
2351       allocation.y = child->y;
2352       allocation.width = child->width;
2353       allocation.height = child->height;
2354       gtk_widget_size_allocate (child->widget, &allocation);
2355     }
2356
2357   /* We size-allocate the columns first because the width of the
2358    * tree view (used in updating the adjustments below) might change.
2359    */
2360   gtk_tree_view_size_allocate_columns (widget, &width_changed);
2361
2362   tree_view->priv->hadjustment->page_size = allocation->width;
2363   tree_view->priv->hadjustment->page_increment = allocation->width * 0.9;
2364   tree_view->priv->hadjustment->step_increment = allocation->width * 0.1;
2365   tree_view->priv->hadjustment->lower = 0;
2366   tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->page_size, tree_view->priv->width);
2367
2368   if (gtk_widget_get_direction(widget) == GTK_TEXT_DIR_RTL)
2369     {
2370       if (allocation->width < tree_view->priv->width)
2371         {
2372           if (tree_view->priv->init_hadjust_value)
2373             {
2374               tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2375               tree_view->priv->init_hadjust_value = FALSE;
2376             }
2377           else if (allocation->width != old_width)
2378             {
2379               tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->hadjustment->value - allocation->width + old_width, 0, tree_view->priv->width - allocation->width);
2380             }
2381           else
2382             tree_view->priv->hadjustment->value = CLAMP (tree_view->priv->width - (tree_view->priv->prev_width - tree_view->priv->hadjustment->value), 0, tree_view->priv->width - allocation->width);
2383         }
2384       else
2385         {
2386           tree_view->priv->hadjustment->value = 0;
2387           tree_view->priv->init_hadjust_value = TRUE;
2388         }
2389     }
2390   else
2391     if (tree_view->priv->hadjustment->value + allocation->width > tree_view->priv->width)
2392       tree_view->priv->hadjustment->value = MAX (tree_view->priv->width - allocation->width, 0);
2393
2394   gtk_adjustment_changed (tree_view->priv->hadjustment);
2395
2396   tree_view->priv->vadjustment->page_size = allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view);
2397   tree_view->priv->vadjustment->step_increment = tree_view->priv->vadjustment->page_size * 0.1;
2398   tree_view->priv->vadjustment->page_increment = tree_view->priv->vadjustment->page_size * 0.9;
2399   tree_view->priv->vadjustment->lower = 0;
2400   tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->page_size, tree_view->priv->height);
2401
2402   gtk_adjustment_changed (tree_view->priv->vadjustment);
2403
2404   /* now the adjustments and window sizes are in sync, we can sync toprow/dy again */
2405   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
2406     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
2407   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
2408     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment),
2409                               tree_view->priv->height - tree_view->priv->vadjustment->page_size);
2410   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
2411     gtk_tree_view_top_row_to_dy (tree_view);
2412   else
2413     gtk_tree_view_dy_to_top_row (tree_view);
2414
2415   if (GTK_WIDGET_REALIZED (widget))
2416     {
2417       gdk_window_move_resize (widget->window,
2418                               allocation->x, allocation->y,
2419                               allocation->width, allocation->height);
2420       gdk_window_move_resize (tree_view->priv->header_window,
2421                               - (gint) tree_view->priv->hadjustment->value,
2422                               0,
2423                               MAX (tree_view->priv->width, allocation->width),
2424                               tree_view->priv->header_height);
2425       gdk_window_move_resize (tree_view->priv->bin_window,
2426                               - (gint) tree_view->priv->hadjustment->value,
2427                               TREE_VIEW_HEADER_HEIGHT (tree_view),
2428                               MAX (tree_view->priv->width, allocation->width),
2429                               allocation->height - TREE_VIEW_HEADER_HEIGHT (tree_view));
2430     }
2431
2432   if (tree_view->priv->tree == NULL)
2433     invalidate_empty_focus (tree_view);
2434
2435   if (GTK_WIDGET_REALIZED (widget))
2436     {
2437       gboolean has_expand_column = FALSE;
2438       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
2439         {
2440           if (gtk_tree_view_column_get_expand (GTK_TREE_VIEW_COLUMN (tmp_list->data)))
2441             {
2442               has_expand_column = TRUE;
2443               break;
2444             }
2445         }
2446
2447       /* This little hack only works if we have an LTR locale, and no column has the  */
2448       if (width_changed)
2449         {
2450           if (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_LTR &&
2451               ! has_expand_column)
2452             invalidate_last_column (tree_view);
2453           else
2454             gtk_widget_queue_draw (widget);
2455         }
2456     }
2457 }
2458
2459 /* Grabs the focus and unsets the GTK_TREE_VIEW_DRAW_KEYFOCUS flag */
2460 static void
2461 grab_focus_and_unset_draw_keyfocus (GtkTreeView *tree_view)
2462 {
2463   if (GTK_WIDGET_CAN_FOCUS (tree_view) && !GTK_WIDGET_HAS_FOCUS (tree_view))
2464     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
2465   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
2466 }
2467
2468 static inline gboolean
2469 row_is_separator (GtkTreeView *tree_view,
2470                   GtkTreeIter *iter,
2471                   GtkTreePath *path)
2472 {
2473   gboolean is_separator = FALSE;
2474
2475   if (tree_view->priv->row_separator_func)
2476     {
2477       GtkTreeIter tmpiter;
2478
2479       if (iter)
2480         tmpiter = *iter;
2481       else
2482         gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, path);
2483
2484       is_separator = tree_view->priv->row_separator_func (tree_view->priv->model,
2485                                                           &tmpiter,
2486                                                           tree_view->priv->row_separator_data);
2487     }
2488
2489   return is_separator;
2490 }
2491
2492 static gboolean
2493 gtk_tree_view_button_press (GtkWidget      *widget,
2494                             GdkEventButton *event)
2495 {
2496   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2497   GList *list;
2498   GtkTreeViewColumn *column = NULL;
2499   gint i;
2500   GdkRectangle background_area;
2501   GdkRectangle cell_area;
2502   gint vertical_separator;
2503   gint horizontal_separator;
2504   gboolean path_is_selectable;
2505   gboolean rtl;
2506
2507   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2508   gtk_tree_view_stop_editing (tree_view, FALSE);
2509   gtk_widget_style_get (widget,
2510                         "vertical-separator", &vertical_separator,
2511                         "horizontal-separator", &horizontal_separator,
2512                         NULL);
2513
2514
2515   /* Because grab_focus can cause reentrancy, we delay grab_focus until after
2516    * we're done handling the button press.
2517    */
2518
2519   if (event->window == tree_view->priv->bin_window)
2520     {
2521       GtkRBNode *node;
2522       GtkRBTree *tree;
2523       GtkTreePath *path;
2524       gchar *path_string;
2525       gint depth;
2526       gint new_y;
2527       gint y_offset;
2528       gint dval;
2529       gint pre_val, aft_val;
2530       GtkTreeViewColumn *column = NULL;
2531       GtkCellRenderer *focus_cell = NULL;
2532       gint column_handled_click = FALSE;
2533       gboolean row_double_click = FALSE;
2534       gboolean rtl;
2535       gboolean node_selected;
2536
2537       /* Empty tree? */
2538       if (tree_view->priv->tree == NULL)
2539         {
2540           grab_focus_and_unset_draw_keyfocus (tree_view);
2541           return TRUE;
2542         }
2543
2544       /* are we in an arrow? */
2545       if (tree_view->priv->prelight_node &&
2546           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT) &&
2547           TREE_VIEW_DRAW_EXPANDERS (tree_view))
2548         {
2549           if (event->button == 1)
2550             {
2551               gtk_grab_add (widget);
2552               tree_view->priv->button_pressed_node = tree_view->priv->prelight_node;
2553               tree_view->priv->button_pressed_tree = tree_view->priv->prelight_tree;
2554               gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
2555                                         tree_view->priv->prelight_tree,
2556                                         tree_view->priv->prelight_node,
2557                                         event->x,
2558                                         event->y);
2559             }
2560
2561           grab_focus_and_unset_draw_keyfocus (tree_view);
2562           return TRUE;
2563         }
2564
2565       /* find the node that was clicked */
2566       new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
2567       if (new_y < 0)
2568         new_y = 0;
2569       y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
2570
2571       if (node == NULL)
2572         {
2573           /* We clicked in dead space */
2574           grab_focus_and_unset_draw_keyfocus (tree_view);
2575           return TRUE;
2576         }
2577
2578       /* Get the path and the node */
2579       path = _gtk_tree_view_find_path (tree_view, tree, node);
2580       path_is_selectable = !row_is_separator (tree_view, NULL, path);
2581
2582       if (!path_is_selectable)
2583         {
2584           gtk_tree_path_free (path);
2585           grab_focus_and_unset_draw_keyfocus (tree_view);
2586           return TRUE;
2587         }
2588
2589       depth = gtk_tree_path_get_depth (path);
2590       background_area.y = y_offset + event->y;
2591       background_area.height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
2592       background_area.x = 0;
2593
2594
2595       /* Let the column have a chance at selecting it. */
2596       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
2597       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
2598            list; list = (rtl ? list->prev : list->next))
2599         {
2600           GtkTreeViewColumn *candidate = list->data;
2601
2602           if (!candidate->visible)
2603             continue;
2604
2605           background_area.width = candidate->width;
2606           if ((background_area.x > (gint) event->x) ||
2607               (background_area.x + background_area.width <= (gint) event->x))
2608             {
2609               background_area.x += background_area.width;
2610               continue;
2611             }
2612
2613           /* we found the focus column */
2614           column = candidate;
2615           cell_area = background_area;
2616           cell_area.width -= horizontal_separator;
2617           cell_area.height -= vertical_separator;
2618           cell_area.x += horizontal_separator/2;
2619           cell_area.y += vertical_separator/2;
2620           if (gtk_tree_view_is_expander_column (tree_view, column))
2621             {
2622               if (!rtl)
2623                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
2624               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
2625
2626               if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
2627                 {
2628                   if (!rtl)
2629                     cell_area.x += depth * tree_view->priv->expander_size;
2630                   cell_area.width -= depth * tree_view->priv->expander_size;
2631                 }
2632             }
2633           break;
2634         }
2635
2636       if (column == NULL)
2637         {
2638           gtk_tree_path_free (path);
2639           grab_focus_and_unset_draw_keyfocus (tree_view);
2640           return FALSE;
2641         }
2642
2643       tree_view->priv->focus_column = column;
2644
2645       /* decide if we edit */
2646       if (event->type == GDK_BUTTON_PRESS && event->button == 1 &&
2647           !(event->state & gtk_accelerator_get_default_mod_mask ()))
2648         {
2649           GtkTreePath *anchor;
2650           GtkTreeIter iter;
2651
2652           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
2653           gtk_tree_view_column_cell_set_cell_data (column,
2654                                                    tree_view->priv->model,
2655                                                    &iter,
2656                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
2657                                                    node->children?TRUE:FALSE);
2658
2659           if (tree_view->priv->anchor)
2660             anchor = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
2661           else
2662             anchor = NULL;
2663
2664           if ((anchor && !gtk_tree_path_compare (anchor, path))
2665               || !_gtk_tree_view_column_has_editable_cell (column))
2666             {
2667               GtkCellEditable *cell_editable = NULL;
2668
2669               /* FIXME: get the right flags */
2670               guint flags = 0;
2671
2672               path_string = gtk_tree_path_to_string (path);
2673
2674               if (_gtk_tree_view_column_cell_event (column,
2675                                                     &cell_editable,
2676                                                     (GdkEvent *)event,
2677                                                     path_string,
2678                                                     &background_area,
2679                                                     &cell_area, flags))
2680                 {
2681                   if (cell_editable != NULL)
2682                     {
2683                       gint left, right;
2684                       GdkRectangle area;
2685
2686                       area = cell_area;
2687                       _gtk_tree_view_column_get_neighbor_sizes (column, _gtk_tree_view_column_get_edited_cell (column), &left, &right);
2688
2689                       area.x += left;
2690                       area.width -= right + left;
2691
2692                       gtk_tree_view_real_start_editing (tree_view,
2693                                                         column,
2694                                                         path,
2695                                                         cell_editable,
2696                                                         &area,
2697                                                         (GdkEvent *)event,
2698                                                         flags);
2699                       g_free (path_string);
2700                       gtk_tree_path_free (path);
2701                       gtk_tree_path_free (anchor);
2702                       return TRUE;
2703                     }
2704                   column_handled_click = TRUE;
2705                 }
2706               g_free (path_string);
2707             }
2708           if (anchor)
2709             gtk_tree_path_free (anchor);
2710         }
2711
2712       /* select */
2713       node_selected = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
2714       pre_val = tree_view->priv->vadjustment->value;
2715
2716       /* we only handle selection modifications on the first button press
2717        */
2718       if (event->type == GDK_BUTTON_PRESS)
2719         {
2720           if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2721             tree_view->priv->ctrl_pressed = TRUE;
2722           if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2723             tree_view->priv->shift_pressed = TRUE;
2724
2725           focus_cell = _gtk_tree_view_column_get_cell_at_pos (column, event->x - background_area.x);
2726           if (focus_cell)
2727             gtk_tree_view_column_focus_cell (column, focus_cell);
2728
2729           if (event->state & GDK_CONTROL_MASK)
2730             {
2731               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2732               gtk_tree_view_real_toggle_cursor_row (tree_view);
2733             }
2734           else if (event->state & GDK_SHIFT_MASK)
2735             {
2736               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
2737               gtk_tree_view_real_select_cursor_row (tree_view, FALSE);
2738             }
2739           else
2740             {
2741               gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
2742             }
2743
2744           tree_view->priv->ctrl_pressed = FALSE;
2745           tree_view->priv->shift_pressed = FALSE;
2746         }
2747
2748       /* the treeview may have been scrolled because of _set_cursor,
2749        * correct here
2750        */
2751
2752       aft_val = tree_view->priv->vadjustment->value;
2753       dval = pre_val - aft_val;
2754
2755       cell_area.y += dval;
2756       background_area.y += dval;
2757
2758       /* Save press to possibly begin a drag
2759        */
2760       if (!column_handled_click &&
2761           !tree_view->priv->in_grab &&
2762           tree_view->priv->pressed_button < 0)
2763         {
2764           tree_view->priv->pressed_button = event->button;
2765           tree_view->priv->press_start_x = event->x;
2766           tree_view->priv->press_start_y = event->y;
2767
2768           if (tree_view->priv->rubber_banding_enable
2769               && !node_selected
2770               && tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
2771             {
2772               tree_view->priv->press_start_y += tree_view->priv->dy;
2773               tree_view->priv->rubber_band_x = event->x;
2774               tree_view->priv->rubber_band_y = event->y + tree_view->priv->dy;
2775               tree_view->priv->rubber_band_status = RUBBER_BAND_MAYBE_START;
2776
2777               if ((event->state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
2778                 tree_view->priv->rubber_band_ctrl = TRUE;
2779               if ((event->state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
2780                 tree_view->priv->rubber_band_shift = TRUE;
2781             }
2782         }
2783
2784       /* Test if a double click happened on the same row. */
2785       if (event->button == 1)
2786         {
2787           /* We also handle triple clicks here, because a user could have done
2788            * a first click and a second double click on different rows.
2789            */
2790           if ((event->type == GDK_2BUTTON_PRESS
2791                || event->type == GDK_3BUTTON_PRESS)
2792               && tree_view->priv->last_button_press)
2793             {
2794               GtkTreePath *lsc;
2795
2796               lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press);
2797
2798               if (lsc)
2799                 {
2800                   row_double_click = !gtk_tree_path_compare (lsc, path);
2801                   gtk_tree_path_free (lsc);
2802                 }
2803             }
2804
2805           if (row_double_click)
2806             {
2807               if (tree_view->priv->last_button_press)
2808                 gtk_tree_row_reference_free (tree_view->priv->last_button_press);
2809               if (tree_view->priv->last_button_press_2)
2810                 gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
2811               tree_view->priv->last_button_press = NULL;
2812               tree_view->priv->last_button_press_2 = NULL;
2813             }
2814           else
2815             {
2816               if (tree_view->priv->last_button_press)
2817                 gtk_tree_row_reference_free (tree_view->priv->last_button_press);
2818               tree_view->priv->last_button_press = tree_view->priv->last_button_press_2;
2819               tree_view->priv->last_button_press_2 = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
2820             }
2821         }
2822
2823       if (row_double_click)
2824         {
2825           gtk_grab_remove (widget);
2826           gtk_tree_view_row_activated (tree_view, path, column);
2827
2828           if (tree_view->priv->pressed_button == event->button)
2829             tree_view->priv->pressed_button = -1;
2830         }
2831
2832       gtk_tree_path_free (path);
2833
2834       /* If we activated the row through a double click we don't want to grab
2835        * focus back, as moving focus to another widget is pretty common.
2836        */
2837       if (!row_double_click)
2838         grab_focus_and_unset_draw_keyfocus (tree_view);
2839
2840       return TRUE;
2841     }
2842
2843   /* We didn't click in the window.  Let's check to see if we clicked on a column resize window.
2844    */
2845   for (i = 0, list = tree_view->priv->columns; list; list = list->next, i++)
2846     {
2847       column = list->data;
2848       if (event->window == column->window &&
2849           column->resizable &&
2850           column->window)
2851         {
2852           gpointer drag_data;
2853
2854           if (event->type == GDK_2BUTTON_PRESS &&
2855               gtk_tree_view_column_get_sizing (column) != GTK_TREE_VIEW_COLUMN_AUTOSIZE)
2856             {
2857               column->use_resized_width = FALSE;
2858               _gtk_tree_view_column_autosize (tree_view, column);
2859               return TRUE;
2860             }
2861
2862           if (gdk_pointer_grab (column->window, FALSE,
2863                                 GDK_POINTER_MOTION_HINT_MASK |
2864                                 GDK_BUTTON1_MOTION_MASK |
2865                                 GDK_BUTTON_RELEASE_MASK,
2866                                 NULL, NULL, event->time))
2867             return FALSE;
2868
2869           gtk_grab_add (widget);
2870           GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2871           column->resized_width = column->width - tree_view->priv->last_extra_space_per_column;
2872
2873           /* block attached dnd signal handler */
2874           drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2875           if (drag_data)
2876             g_signal_handlers_block_matched (widget,
2877                                              G_SIGNAL_MATCH_DATA,
2878                                              0, 0, NULL, NULL,
2879                                              drag_data);
2880
2881           tree_view->priv->drag_pos = i;
2882           tree_view->priv->x_drag = column->button->allocation.x + (rtl ? 0 : column->button->allocation.width);
2883
2884           if (!GTK_WIDGET_HAS_FOCUS (widget))
2885             gtk_widget_grab_focus (widget);
2886
2887           return TRUE;
2888         }
2889     }
2890   return FALSE;
2891 }
2892
2893 /* GtkWidget::button_release_event helper */
2894 static gboolean
2895 gtk_tree_view_button_release_drag_column (GtkWidget      *widget,
2896                                           GdkEventButton *event)
2897 {
2898   GtkTreeView *tree_view;
2899   GList *l;
2900   gboolean rtl;
2901
2902   tree_view = GTK_TREE_VIEW (widget);
2903
2904   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
2905   gdk_display_pointer_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2906   gdk_display_keyboard_ungrab (gtk_widget_get_display (widget), GDK_CURRENT_TIME);
2907
2908   /* Move the button back */
2909   g_object_ref (tree_view->priv->drag_column->button);
2910   gtk_container_remove (GTK_CONTAINER (tree_view), tree_view->priv->drag_column->button);
2911   gtk_widget_set_parent_window (tree_view->priv->drag_column->button, tree_view->priv->header_window);
2912   gtk_widget_set_parent (tree_view->priv->drag_column->button, GTK_WIDGET (tree_view));
2913   g_object_unref (tree_view->priv->drag_column->button);
2914   gtk_widget_queue_resize (widget);
2915   if (tree_view->priv->drag_column->resizable)
2916     {
2917       gdk_window_raise (tree_view->priv->drag_column->window);
2918       gdk_window_show (tree_view->priv->drag_column->window);
2919     }
2920   else
2921     gdk_window_hide (tree_view->priv->drag_column->window);
2922
2923   gtk_widget_grab_focus (tree_view->priv->drag_column->button);
2924
2925   if (rtl)
2926     {
2927       if (tree_view->priv->cur_reorder &&
2928           tree_view->priv->cur_reorder->right_column != tree_view->priv->drag_column)
2929         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2930                                          tree_view->priv->cur_reorder->right_column);
2931     }
2932   else
2933     {
2934       if (tree_view->priv->cur_reorder &&
2935           tree_view->priv->cur_reorder->left_column != tree_view->priv->drag_column)
2936         gtk_tree_view_move_column_after (tree_view, tree_view->priv->drag_column,
2937                                          tree_view->priv->cur_reorder->left_column);
2938     }
2939   tree_view->priv->drag_column = NULL;
2940   gdk_window_hide (tree_view->priv->drag_window);
2941
2942   for (l = tree_view->priv->column_drag_info; l != NULL; l = l->next)
2943     g_slice_free (GtkTreeViewColumnReorder, l->data);
2944   g_list_free (tree_view->priv->column_drag_info);
2945   tree_view->priv->column_drag_info = NULL;
2946   tree_view->priv->cur_reorder = NULL;
2947
2948   if (tree_view->priv->drag_highlight_window)
2949     gdk_window_hide (tree_view->priv->drag_highlight_window);
2950
2951   /* Reset our flags */
2952   tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_UNSET;
2953   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
2954
2955   return TRUE;
2956 }
2957
2958 /* GtkWidget::button_release_event helper */
2959 static gboolean
2960 gtk_tree_view_button_release_column_resize (GtkWidget      *widget,
2961                                             GdkEventButton *event)
2962 {
2963   GtkTreeView *tree_view;
2964   gpointer drag_data;
2965
2966   tree_view = GTK_TREE_VIEW (widget);
2967
2968   tree_view->priv->drag_pos = -1;
2969
2970   /* unblock attached dnd signal handler */
2971   drag_data = g_object_get_data (G_OBJECT (widget), "gtk-site-data");
2972   if (drag_data)
2973     g_signal_handlers_unblock_matched (widget,
2974                                        G_SIGNAL_MATCH_DATA,
2975                                        0, 0, NULL, NULL,
2976                                        drag_data);
2977
2978   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE);
2979   gtk_grab_remove (widget);
2980   gdk_display_pointer_ungrab (gdk_drawable_get_display (event->window),
2981                               event->time);
2982   return TRUE;
2983 }
2984
2985 static gboolean
2986 gtk_tree_view_button_release (GtkWidget      *widget,
2987                               GdkEventButton *event)
2988 {
2989   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
2990
2991   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
2992     return gtk_tree_view_button_release_drag_column (widget, event);
2993
2994   if (tree_view->priv->rubber_band_status)
2995     gtk_tree_view_stop_rubber_band (tree_view);
2996
2997   if (tree_view->priv->pressed_button == event->button)
2998     tree_view->priv->pressed_button = -1;
2999
3000   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3001     return gtk_tree_view_button_release_column_resize (widget, event);
3002
3003   if (tree_view->priv->button_pressed_node == NULL)
3004     return FALSE;
3005
3006   if (event->button == 1)
3007     {
3008       gtk_grab_remove (widget);
3009       if (tree_view->priv->button_pressed_node == tree_view->priv->prelight_node &&
3010           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
3011         {
3012           GtkTreePath *path = NULL;
3013
3014           path = _gtk_tree_view_find_path (tree_view,
3015                                            tree_view->priv->button_pressed_tree,
3016                                            tree_view->priv->button_pressed_node);
3017           /* Actually activate the node */
3018           if (tree_view->priv->button_pressed_node->children == NULL)
3019             gtk_tree_view_real_expand_row (tree_view, path,
3020                                            tree_view->priv->button_pressed_tree,
3021                                            tree_view->priv->button_pressed_node,
3022                                            FALSE, TRUE);
3023           else
3024             gtk_tree_view_real_collapse_row (GTK_TREE_VIEW (widget), path,
3025                                              tree_view->priv->button_pressed_tree,
3026                                              tree_view->priv->button_pressed_node, TRUE);
3027           gtk_tree_path_free (path);
3028         }
3029
3030       tree_view->priv->button_pressed_tree = NULL;
3031       tree_view->priv->button_pressed_node = NULL;
3032     }
3033
3034   return TRUE;
3035 }
3036
3037 static gboolean
3038 gtk_tree_view_grab_broken (GtkWidget          *widget,
3039                            GdkEventGrabBroken *event)
3040 {
3041   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3042
3043   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
3044     gtk_tree_view_button_release_drag_column (widget, (GdkEventButton *)event);
3045
3046   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
3047     gtk_tree_view_button_release_column_resize (widget, (GdkEventButton *)event);
3048
3049   return TRUE;
3050 }
3051
3052 #if 0
3053 static gboolean
3054 gtk_tree_view_configure (GtkWidget *widget,
3055                          GdkEventConfigure *event)
3056 {
3057   GtkTreeView *tree_view;
3058
3059   tree_view = GTK_TREE_VIEW (widget);
3060   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window);
3061
3062   return FALSE;
3063 }
3064 #endif
3065
3066 /* GtkWidget::motion_event function set.
3067  */
3068
3069 static gboolean
3070 coords_are_over_arrow (GtkTreeView *tree_view,
3071                        GtkRBTree   *tree,
3072                        GtkRBNode   *node,
3073                        /* these are in bin window coords */
3074                        gint         x,
3075                        gint         y)
3076 {
3077   GdkRectangle arrow;
3078   gint x2;
3079
3080   if (!GTK_WIDGET_REALIZED (tree_view))
3081     return FALSE;
3082
3083   if ((node->flags & GTK_RBNODE_IS_PARENT) == 0)
3084     return FALSE;
3085
3086   arrow.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
3087
3088   arrow.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
3089
3090   gtk_tree_view_get_arrow_xrange (tree_view, tree, &arrow.x, &x2);
3091
3092   arrow.width = x2 - arrow.x;
3093
3094   return (x >= arrow.x &&
3095           x < (arrow.x + arrow.width) &&
3096           y >= arrow.y &&
3097           y < (arrow.y + arrow.height));
3098 }
3099
3100 static gboolean
3101 auto_expand_timeout (gpointer data)
3102 {
3103   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
3104   GtkTreePath *path;
3105
3106   if (tree_view->priv->prelight_node)
3107     {
3108       path = _gtk_tree_view_find_path (tree_view,
3109                                        tree_view->priv->prelight_tree,
3110                                        tree_view->priv->prelight_node);
3111
3112       if (tree_view->priv->prelight_node->children)
3113         gtk_tree_view_collapse_row (tree_view, path);
3114       else
3115         gtk_tree_view_expand_row (tree_view, path, FALSE);
3116
3117       gtk_tree_path_free (path);
3118     }
3119
3120   tree_view->priv->auto_expand_timeout = 0;
3121
3122   return FALSE;
3123 }
3124
3125 static void
3126 remove_auto_expand_timeout (GtkTreeView *tree_view)
3127 {
3128   if (tree_view->priv->auto_expand_timeout != 0)
3129     {
3130       g_source_remove (tree_view->priv->auto_expand_timeout);
3131       tree_view->priv->auto_expand_timeout = 0;
3132     }
3133 }
3134
3135 static void
3136 do_prelight (GtkTreeView *tree_view,
3137              GtkRBTree   *tree,
3138              GtkRBNode   *node,
3139              /* these are in bin_window coords */
3140              gint         x,
3141              gint         y)
3142 {
3143   if (tree_view->priv->prelight_tree == tree &&
3144       tree_view->priv->prelight_node == node)
3145     {
3146       /*  We are still on the same node,
3147           but we might need to take care of the arrow  */
3148
3149       if (tree && node && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3150         {
3151           gboolean over_arrow;
3152           gboolean flag_set;
3153
3154           over_arrow = coords_are_over_arrow (tree_view, tree, node, x, y);
3155           flag_set = GTK_TREE_VIEW_FLAG_SET (tree_view,
3156                                              GTK_TREE_VIEW_ARROW_PRELIT);
3157
3158           if (over_arrow != flag_set)
3159             {
3160               if (over_arrow)
3161                 GTK_TREE_VIEW_SET_FLAG (tree_view,
3162                                         GTK_TREE_VIEW_ARROW_PRELIT);
3163               else
3164                 GTK_TREE_VIEW_UNSET_FLAG (tree_view,
3165                                           GTK_TREE_VIEW_ARROW_PRELIT);
3166
3167               gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3168             }
3169         }
3170
3171       return;
3172     }
3173
3174   if (tree_view->priv->prelight_tree && tree_view->priv->prelight_node)
3175     {
3176       /*  Unprelight the old node and arrow  */
3177
3178       GTK_RBNODE_UNSET_FLAG (tree_view->priv->prelight_node,
3179                              GTK_RBNODE_IS_PRELIT);
3180
3181       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT)
3182           && TREE_VIEW_DRAW_EXPANDERS (tree_view))
3183         {
3184           GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3185
3186           gtk_tree_view_draw_arrow (tree_view,
3187                                     tree_view->priv->prelight_tree,
3188                                     tree_view->priv->prelight_node,
3189                                     x,
3190                                     y);
3191         }
3192
3193       _gtk_tree_view_queue_draw_node (tree_view,
3194                                       tree_view->priv->prelight_tree,
3195                                       tree_view->priv->prelight_node,
3196                                       NULL);
3197     }
3198
3199
3200   if (tree_view->priv->hover_expand)
3201     remove_auto_expand_timeout (tree_view);
3202
3203   /*  Set the new prelight values  */
3204   tree_view->priv->prelight_node = node;
3205   tree_view->priv->prelight_tree = tree;
3206
3207   if (!node || !tree)
3208     return;
3209
3210   /*  Prelight the new node and arrow  */
3211
3212   if (TREE_VIEW_DRAW_EXPANDERS (tree_view)
3213       && coords_are_over_arrow (tree_view, tree, node, x, y))
3214     {
3215       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_ARROW_PRELIT);
3216
3217       gtk_tree_view_draw_arrow (tree_view, tree, node, x, y);
3218     }
3219
3220   GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PRELIT);
3221
3222   _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
3223
3224   if (tree_view->priv->hover_expand)
3225     {
3226       tree_view->priv->auto_expand_timeout =
3227         gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, auto_expand_timeout, tree_view);
3228     }
3229 }
3230
3231 static void
3232 prelight_or_select (GtkTreeView *tree_view,
3233                     GtkRBTree   *tree,
3234                     GtkRBNode   *node,
3235                     /* these are in bin_window coords */
3236                     gint         x,
3237                     gint         y)
3238 {
3239   GtkSelectionMode mode = gtk_tree_selection_get_mode (tree_view->priv->selection);
3240
3241   if (tree_view->priv->hover_selection &&
3242       (mode == GTK_SELECTION_SINGLE || mode == GTK_SELECTION_BROWSE) &&
3243       !(tree_view->priv->edited_column &&
3244         tree_view->priv->edited_column->editable_widget))
3245     {
3246       if (node)
3247         {
3248           if (!GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3249             {
3250               GtkTreePath *path;
3251
3252               path = _gtk_tree_view_find_path (tree_view, tree, node);
3253               gtk_tree_selection_select_path (tree_view->priv->selection, path);
3254               if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
3255                 {
3256                   GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
3257                   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, FALSE);
3258                 }
3259               gtk_tree_path_free (path);
3260             }
3261         }
3262
3263       else if (mode == GTK_SELECTION_SINGLE)
3264         gtk_tree_selection_unselect_all (tree_view->priv->selection);
3265     }
3266
3267     do_prelight (tree_view, tree, node, x, y);
3268 }
3269
3270 static void
3271 ensure_unprelighted (GtkTreeView *tree_view)
3272 {
3273   do_prelight (tree_view,
3274                NULL, NULL,
3275                -1000, -1000); /* coords not possibly over an arrow */
3276
3277   g_assert (tree_view->priv->prelight_node == NULL);
3278 }
3279
3280
3281
3282
3283 /* Our motion arrow is either a box (in the case of the original spot)
3284  * or an arrow.  It is expander_size wide.
3285  */
3286 /*
3287  * 11111111111111
3288  * 01111111111110
3289  * 00111111111100
3290  * 00011111111000
3291  * 00001111110000
3292  * 00000111100000
3293  * 00000111100000
3294  * 00000111100000
3295  * ~ ~ ~ ~ ~ ~ ~
3296  * 00000111100000
3297  * 00000111100000
3298  * 00000111100000
3299  * 00001111110000
3300  * 00011111111000
3301  * 00111111111100
3302  * 01111111111110
3303  * 11111111111111
3304  */
3305
3306 static void
3307 gtk_tree_view_motion_draw_column_motion_arrow (GtkTreeView *tree_view)
3308 {
3309   GtkTreeViewColumnReorder *reorder = tree_view->priv->cur_reorder;
3310   GtkWidget *widget = GTK_WIDGET (tree_view);
3311   GdkBitmap *mask = NULL;
3312   gint x;
3313   gint y;
3314   gint width;
3315   gint height;
3316   gint arrow_type = DRAG_COLUMN_WINDOW_STATE_UNSET;
3317   GdkWindowAttr attributes;
3318   guint attributes_mask;
3319
3320   if (!reorder ||
3321       reorder->left_column == tree_view->priv->drag_column ||
3322       reorder->right_column == tree_view->priv->drag_column)
3323     arrow_type = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3324   else if (reorder->left_column || reorder->right_column)
3325     {
3326       GdkRectangle visible_rect;
3327       gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3328       if (reorder->left_column)
3329         x = reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width;
3330       else
3331         x = reorder->right_column->button->allocation.x;
3332
3333       if (x < visible_rect.x)
3334         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT;
3335       else if (x > visible_rect.x + visible_rect.width)
3336         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT;
3337       else
3338         arrow_type = DRAG_COLUMN_WINDOW_STATE_ARROW;
3339     }
3340
3341   /* We want to draw the rectangle over the initial location. */
3342   if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3343     {
3344       GdkGC *gc;
3345       GdkColor col;
3346
3347       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ORIGINAL)
3348         {
3349           if (tree_view->priv->drag_highlight_window)
3350             {
3351               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3352                                         NULL);
3353               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3354             }
3355
3356           attributes.window_type = GDK_WINDOW_CHILD;
3357           attributes.wclass = GDK_INPUT_OUTPUT;
3358           attributes.x = tree_view->priv->drag_column_x;
3359           attributes.y = 0;
3360           width = attributes.width = tree_view->priv->drag_column->button->allocation.width;
3361           height = attributes.height = tree_view->priv->drag_column->button->allocation.height;
3362           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3363           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3364           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3365           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3366           tree_view->priv->drag_highlight_window = gdk_window_new (tree_view->priv->header_window, &attributes, attributes_mask);
3367           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3368
3369           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3370           gc = gdk_gc_new (mask);
3371           col.pixel = 1;
3372           gdk_gc_set_foreground (gc, &col);
3373           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3374           col.pixel = 0;
3375           gdk_gc_set_foreground(gc, &col);
3376           gdk_draw_rectangle (mask, gc, TRUE, 2, 2, width - 4, height - 4);
3377           g_object_unref (gc);
3378
3379           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3380                                          mask, 0, 0);
3381           if (mask) g_object_unref (mask);
3382           tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ORIGINAL;
3383         }
3384     }
3385   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW)
3386     {
3387       gint i, j = 1;
3388       GdkGC *gc;
3389       GdkColor col;
3390
3391       width = tree_view->priv->expander_size;
3392
3393       /* Get x, y, width, height of arrow */
3394       gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
3395       if (reorder->left_column)
3396         {
3397           x += reorder->left_column->button->allocation.x + reorder->left_column->button->allocation.width - width/2;
3398           height = reorder->left_column->button->allocation.height;
3399         }
3400       else
3401         {
3402           x += reorder->right_column->button->allocation.x - width/2;
3403           height = reorder->right_column->button->allocation.height;
3404         }
3405       y -= tree_view->priv->expander_size/2; /* The arrow takes up only half the space */
3406       height += tree_view->priv->expander_size;
3407
3408       /* Create the new window */
3409       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW)
3410         {
3411           if (tree_view->priv->drag_highlight_window)
3412             {
3413               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3414                                         NULL);
3415               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3416             }
3417
3418           attributes.window_type = GDK_WINDOW_TEMP;
3419           attributes.wclass = GDK_INPUT_OUTPUT;
3420           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3421           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3422           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3423           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3424           attributes.x = x;
3425           attributes.y = y;
3426           attributes.width = width;
3427           attributes.height = height;
3428           tree_view->priv->drag_highlight_window = gdk_window_new (gtk_widget_get_root_window (widget),
3429                                                                    &attributes, attributes_mask);
3430           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3431
3432           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3433           gc = gdk_gc_new (mask);
3434           col.pixel = 1;
3435           gdk_gc_set_foreground (gc, &col);
3436           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3437
3438           /* Draw the 2 arrows as per above */
3439           col.pixel = 0;
3440           gdk_gc_set_foreground (gc, &col);
3441           for (i = 0; i < width; i ++)
3442             {
3443               if (i == (width/2 - 1))
3444                 continue;
3445               gdk_draw_line (mask, gc, i, j, i, height - j);
3446               if (i < (width/2 - 1))
3447                 j++;
3448               else
3449                 j--;
3450             }
3451           g_object_unref (gc);
3452           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3453                                          mask, 0, 0);
3454           if (mask) g_object_unref (mask);
3455         }
3456
3457       tree_view->priv->drag_column_window_state = DRAG_COLUMN_WINDOW_STATE_ARROW;
3458       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3459     }
3460   else if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT ||
3461            arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3462     {
3463       gint i, j = 1;
3464       GdkGC *gc;
3465       GdkColor col;
3466
3467       width = tree_view->priv->expander_size;
3468
3469       /* Get x, y, width, height of arrow */
3470       width = width/2; /* remember, the arrow only takes half the available width */
3471       gdk_window_get_origin (widget->window, &x, &y);
3472       if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3473         x += widget->allocation.width - width;
3474
3475       if (reorder->left_column)
3476         height = reorder->left_column->button->allocation.height;
3477       else
3478         height = reorder->right_column->button->allocation.height;
3479
3480       y -= tree_view->priv->expander_size;
3481       height += 2*tree_view->priv->expander_size;
3482
3483       /* Create the new window */
3484       if (tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT &&
3485           tree_view->priv->drag_column_window_state != DRAG_COLUMN_WINDOW_STATE_ARROW_RIGHT)
3486         {
3487           if (tree_view->priv->drag_highlight_window)
3488             {
3489               gdk_window_set_user_data (tree_view->priv->drag_highlight_window,
3490                                         NULL);
3491               gdk_window_destroy (tree_view->priv->drag_highlight_window);
3492             }
3493
3494           attributes.window_type = GDK_WINDOW_TEMP;
3495           attributes.wclass = GDK_INPUT_OUTPUT;
3496           attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
3497           attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
3498           attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
3499           attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
3500           attributes.x = x;
3501           attributes.y = y;
3502           attributes.width = width;
3503           attributes.height = height;
3504           tree_view->priv->drag_highlight_window = gdk_window_new (NULL, &attributes, attributes_mask);
3505           gdk_window_set_user_data (tree_view->priv->drag_highlight_window, GTK_WIDGET (tree_view));
3506
3507           mask = gdk_pixmap_new (tree_view->priv->drag_highlight_window, width, height, 1);
3508           gc = gdk_gc_new (mask);
3509           col.pixel = 1;
3510           gdk_gc_set_foreground (gc, &col);
3511           gdk_draw_rectangle (mask, gc, TRUE, 0, 0, width, height);
3512
3513           /* Draw the 2 arrows as per above */
3514           col.pixel = 0;
3515           gdk_gc_set_foreground (gc, &col);
3516           j = tree_view->priv->expander_size;
3517           for (i = 0; i < width; i ++)
3518             {
3519               gint k;
3520               if (arrow_type == DRAG_COLUMN_WINDOW_STATE_ARROW_LEFT)
3521                 k = width - i - 1;
3522               else
3523                 k = i;
3524               gdk_draw_line (mask, gc, k, j, k, height - j);
3525               gdk_draw_line (mask, gc, k, 0, k, tree_view->priv->expander_size - j);
3526               gdk_draw_line (mask, gc, k, height, k, height - tree_view->priv->expander_size + j);
3527               j--;
3528             }
3529           g_object_unref (gc);
3530           gdk_window_shape_combine_mask (tree_view->priv->drag_highlight_window,
3531                                          mask, 0, 0);
3532           if (mask) g_object_unref (mask);
3533         }
3534
3535       tree_view->priv->drag_column_window_state = arrow_type;
3536       gdk_window_move (tree_view->priv->drag_highlight_window, x, y);
3537    }
3538   else
3539     {
3540       g_warning (G_STRLOC"Invalid GtkTreeViewColumnReorder struct");
3541       gdk_window_hide (tree_view->priv->drag_highlight_window);
3542       return;
3543     }
3544
3545   gdk_window_show (tree_view->priv->drag_highlight_window);
3546   gdk_window_raise (tree_view->priv->drag_highlight_window);
3547 }
3548
3549 static gboolean
3550 gtk_tree_view_motion_resize_column (GtkWidget      *widget,
3551                                     GdkEventMotion *event)
3552 {
3553   gint x;
3554   gint new_width;
3555   GtkTreeViewColumn *column;
3556   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
3557
3558   column = gtk_tree_view_get_column (tree_view, tree_view->priv->drag_pos);
3559
3560   if (event->is_hint || event->window != widget->window)
3561     gtk_widget_get_pointer (widget, &x, NULL);
3562   else
3563     x = event->x;
3564
3565   if (tree_view->priv->hadjustment)
3566     x += tree_view->priv->hadjustment->value;
3567
3568   new_width = gtk_tree_view_new_column_width (tree_view,
3569                                               tree_view->priv->drag_pos, &x);
3570   if (x != tree_view->priv->x_drag &&
3571       (new_width != column->fixed_width))
3572     {
3573       column->use_resized_width = TRUE;
3574       column->resized_width = new_width;
3575       if (column->expand)
3576         column->resized_width -= tree_view->priv->last_extra_space_per_column;
3577       gtk_widget_queue_resize (widget);
3578     }
3579
3580   return FALSE;
3581 }
3582
3583
3584 static void
3585 gtk_tree_view_update_current_reorder (GtkTreeView *tree_view)
3586 {
3587   GtkTreeViewColumnReorder *reorder = NULL;
3588   GList *list;
3589   gint mouse_x;
3590
3591   gdk_window_get_pointer (tree_view->priv->header_window, &mouse_x, NULL, NULL);
3592   for (list = tree_view->priv->column_drag_info; list; list = list->next)
3593     {
3594       reorder = (GtkTreeViewColumnReorder *) list->data;
3595       if (mouse_x >= reorder->left_align && mouse_x < reorder->right_align)
3596         break;
3597       reorder = NULL;
3598     }
3599
3600   /*  if (reorder && reorder == tree_view->priv->cur_reorder)
3601       return;*/
3602
3603   tree_view->priv->cur_reorder = reorder;
3604   gtk_tree_view_motion_draw_column_motion_arrow (tree_view);
3605 }
3606
3607 static void
3608 gtk_tree_view_vertical_autoscroll (GtkTreeView *tree_view)
3609 {
3610   GdkRectangle visible_rect;
3611   gint y;
3612   gint offset;
3613   gfloat value;
3614
3615   gdk_window_get_pointer (tree_view->priv->bin_window, NULL, &y, NULL);
3616   y += tree_view->priv->dy;
3617
3618   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3619
3620   /* see if we are near the edge. */
3621   offset = y - (visible_rect.y + 2 * SCROLL_EDGE_SIZE);
3622   if (offset > 0)
3623     {
3624       offset = y - (visible_rect.y + visible_rect.height - 2 * SCROLL_EDGE_SIZE);
3625       if (offset < 0)
3626         return;
3627     }
3628
3629   value = CLAMP (tree_view->priv->vadjustment->value + offset, 0.0,
3630                  tree_view->priv->vadjustment->upper - tree_view->priv->vadjustment->page_size);
3631   gtk_adjustment_set_value (tree_view->priv->vadjustment, value);
3632 }
3633
3634 static gboolean
3635 gtk_tree_view_horizontal_autoscroll (GtkTreeView *tree_view)
3636 {
3637   GdkRectangle visible_rect;
3638   gint x;
3639   gint offset;
3640   gfloat value;
3641
3642   gdk_window_get_pointer (tree_view->priv->bin_window, &x, NULL, NULL);
3643
3644   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
3645
3646   /* See if we are near the edge. */
3647   offset = x - (visible_rect.x + SCROLL_EDGE_SIZE);
3648   if (offset > 0)
3649     {
3650       offset = x - (visible_rect.x + visible_rect.width - SCROLL_EDGE_SIZE);
3651       if (offset < 0)
3652         return TRUE;
3653     }
3654   offset = offset/3;
3655
3656   value = CLAMP (tree_view->priv->hadjustment->value + offset,
3657                  0.0, tree_view->priv->hadjustment->upper - tree_view->priv->hadjustment->page_size);
3658   gtk_adjustment_set_value (tree_view->priv->hadjustment, value);
3659
3660   return TRUE;
3661
3662 }
3663
3664 static gboolean
3665 gtk_tree_view_motion_drag_column (GtkWidget      *widget,
3666                                   GdkEventMotion *event)
3667 {
3668   GtkTreeView *tree_view = (GtkTreeView *) widget;
3669   GtkTreeViewColumn *column = tree_view->priv->drag_column;
3670   gint x, y;
3671
3672   /* Sanity Check */
3673   if ((column == NULL) ||
3674       (event->window != tree_view->priv->drag_window))
3675     return FALSE;
3676
3677   /* Handle moving the header */
3678   gdk_window_get_position (tree_view->priv->drag_window, &x, &y);
3679   x = CLAMP (x + (gint)event->x - column->drag_x, 0,
3680              MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width) - column->button->allocation.width);
3681   gdk_window_move (tree_view->priv->drag_window, x, y);
3682
3683   /* autoscroll, if needed */
3684   gtk_tree_view_horizontal_autoscroll (tree_view);
3685   /* Update the current reorder position and arrow; */
3686   gtk_tree_view_update_current_reorder (tree_view);
3687
3688   return TRUE;
3689 }
3690
3691 static void
3692 gtk_tree_view_stop_rubber_band (GtkTreeView *tree_view)
3693 {
3694   remove_scroll_timeout (tree_view);
3695   gtk_grab_remove (GTK_WIDGET (tree_view));
3696
3697   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
3698     {
3699       GtkTreePath *tmp_path;
3700
3701       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
3702
3703       /* The anchor path should be set to the start path */
3704       tmp_path = _gtk_tree_view_find_path (tree_view,
3705                                            tree_view->priv->rubber_band_start_tree,
3706                                            tree_view->priv->rubber_band_start_node);
3707
3708       if (tree_view->priv->anchor)
3709         gtk_tree_row_reference_free (tree_view->priv->anchor);
3710
3711       tree_view->priv->anchor =
3712         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
3713                                           tree_view->priv->model,
3714                                           tmp_path);
3715
3716       gtk_tree_path_free (tmp_path);
3717
3718       /* ... and the cursor to the end path */
3719       tmp_path = _gtk_tree_view_find_path (tree_view,
3720                                            tree_view->priv->rubber_band_end_tree,
3721                                            tree_view->priv->rubber_band_end_node);
3722       gtk_tree_view_real_set_cursor (GTK_TREE_VIEW (tree_view), tmp_path, FALSE, FALSE);
3723       gtk_tree_path_free (tmp_path);
3724
3725       _gtk_tree_selection_emit_changed (tree_view->priv->selection);
3726     }
3727
3728   /* Clear status variables */
3729   tree_view->priv->rubber_band_status = RUBBER_BAND_OFF;
3730   tree_view->priv->rubber_band_shift = 0;
3731   tree_view->priv->rubber_band_ctrl = 0;
3732
3733   tree_view->priv->rubber_band_start_node = NULL;
3734   tree_view->priv->rubber_band_start_tree = NULL;
3735   tree_view->priv->rubber_band_end_node = NULL;
3736   tree_view->priv->rubber_band_end_tree = NULL;
3737 }
3738
3739 static void
3740 gtk_tree_view_update_rubber_band_selection_range (GtkTreeView *tree_view,
3741                                                  GtkRBTree   *start_tree,
3742                                                  GtkRBNode   *start_node,
3743                                                  GtkRBTree   *end_tree,
3744                                                  GtkRBNode   *end_node,
3745                                                  gboolean     select,
3746                                                  gboolean     skip_start,
3747                                                  gboolean     skip_end)
3748 {
3749   if (start_node == end_node)
3750     return;
3751
3752   /* We skip the first node and jump inside the loop */
3753   if (skip_start)
3754     goto skip_first;
3755
3756   do
3757     {
3758       /* Small optimization by assuming insensitive nodes are never
3759        * selected.
3760        */
3761       if (!GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3762         {
3763           GtkTreePath *path;
3764           gboolean selectable;
3765
3766           path = _gtk_tree_view_find_path (tree_view, start_tree, start_node);
3767           selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection, start_node, path);
3768           gtk_tree_path_free (path);
3769
3770           if (!selectable)
3771             goto node_not_selectable;
3772         }
3773
3774       if (select)
3775         {
3776           if (tree_view->priv->rubber_band_shift)
3777             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3778           else if (tree_view->priv->rubber_band_ctrl)
3779             {
3780               /* Toggle the selection state */
3781               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3782                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3783               else
3784                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3785             }
3786           else
3787             GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3788         }
3789       else
3790         {
3791           /* Mirror the above */
3792           if (tree_view->priv->rubber_band_shift)
3793             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3794           else if (tree_view->priv->rubber_band_ctrl)
3795             {
3796               /* Toggle the selection state */
3797               if (GTK_RBNODE_FLAG_SET (start_node, GTK_RBNODE_IS_SELECTED))
3798                 GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3799               else
3800                 GTK_RBNODE_SET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3801             }
3802           else
3803             GTK_RBNODE_UNSET_FLAG (start_node, GTK_RBNODE_IS_SELECTED);
3804         }
3805
3806       _gtk_tree_view_queue_draw_node (tree_view, start_tree, start_node, NULL);
3807
3808 node_not_selectable:
3809       if (start_node == end_node)
3810         break;
3811
3812 skip_first:
3813
3814       if (start_node->children)
3815         {
3816           start_tree = start_node->children;
3817           start_node = start_tree->root;
3818           while (start_node->left != start_tree->nil)
3819             start_node = start_node->left;
3820         }
3821       else
3822         {
3823           _gtk_rbtree_next_full (start_tree, start_node, &start_tree, &start_node);
3824
3825           if (!start_tree)
3826             /* Ran out of tree */
3827             break;
3828         }
3829
3830       if (skip_end && start_node == end_node)
3831         break;
3832     }
3833   while (TRUE);
3834 }
3835
3836 static void
3837 gtk_tree_view_update_rubber_band_selection (GtkTreeView *tree_view)
3838 {
3839   GtkRBTree *start_tree, *end_tree;
3840   GtkRBNode *start_node, *end_node;
3841
3842   _gtk_rbtree_find_offset (tree_view->priv->tree, MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &start_tree, &start_node);
3843   _gtk_rbtree_find_offset (tree_view->priv->tree, MAX (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y), &end_tree, &end_node);
3844
3845   /* Handle the start area first */
3846   if (!tree_view->priv->rubber_band_start_node)
3847     {
3848       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3849                                                        start_tree,
3850                                                        start_node,
3851                                                        end_tree,
3852                                                        end_node,
3853                                                        TRUE,
3854                                                        FALSE,
3855                                                        FALSE);
3856     }
3857   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) <
3858            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3859     {
3860       /* New node is above the old one; selection became bigger */
3861       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3862                                                        start_tree,
3863                                                        start_node,
3864                                                        tree_view->priv->rubber_band_start_tree,
3865                                                        tree_view->priv->rubber_band_start_node,
3866                                                        TRUE,
3867                                                        FALSE,
3868                                                        TRUE);
3869     }
3870   else if (_gtk_rbtree_node_find_offset (start_tree, start_node) >
3871            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_start_tree, tree_view->priv->rubber_band_start_node))
3872     {
3873       /* New node is below the old one; selection became smaller */
3874       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3875                                                        tree_view->priv->rubber_band_start_tree,
3876                                                        tree_view->priv->rubber_band_start_node,
3877                                                        start_tree,
3878                                                        start_node,
3879                                                        FALSE,
3880                                                        FALSE,
3881                                                        TRUE);
3882     }
3883
3884   tree_view->priv->rubber_band_start_tree = start_tree;
3885   tree_view->priv->rubber_band_start_node = start_node;
3886
3887   /* Next, handle the end area */
3888   if (!tree_view->priv->rubber_band_end_node)
3889     {
3890       /* In the event this happens, start_node was also NULL; this case is
3891        * handled above.
3892        */
3893     }
3894   else if (!end_node)
3895     {
3896       /* Find the last node in the tree */
3897       _gtk_rbtree_find_offset (tree_view->priv->tree, tree_view->priv->height - 1,
3898                                &end_tree, &end_node);
3899
3900       /* Selection reached end of the tree */
3901       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3902                                                        tree_view->priv->rubber_band_end_tree,
3903                                                        tree_view->priv->rubber_band_end_node,
3904                                                        end_tree,
3905                                                        end_node,
3906                                                        TRUE,
3907                                                        TRUE,
3908                                                        FALSE);
3909     }
3910   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) >
3911            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3912     {
3913       /* New node is below the old one; selection became bigger */
3914       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3915                                                        tree_view->priv->rubber_band_end_tree,
3916                                                        tree_view->priv->rubber_band_end_node,
3917                                                        end_tree,
3918                                                        end_node,
3919                                                        TRUE,
3920                                                        TRUE,
3921                                                        FALSE);
3922     }
3923   else if (_gtk_rbtree_node_find_offset (end_tree, end_node) <
3924            _gtk_rbtree_node_find_offset (tree_view->priv->rubber_band_end_tree, tree_view->priv->rubber_band_end_node))
3925     {
3926       /* New node is above the old one; selection became smaller */
3927       gtk_tree_view_update_rubber_band_selection_range (tree_view,
3928                                                        end_tree,
3929                                                        end_node,
3930                                                        tree_view->priv->rubber_band_end_tree,
3931                                                        tree_view->priv->rubber_band_end_node,
3932                                                        FALSE,
3933                                                        TRUE,
3934                                                        FALSE);
3935     }
3936
3937   tree_view->priv->rubber_band_end_tree = end_tree;
3938   tree_view->priv->rubber_band_end_node = end_node;
3939 }
3940
3941 static void
3942 gtk_tree_view_update_rubber_band (GtkTreeView *tree_view)
3943 {
3944   gint x, y;
3945   GdkRectangle old_area;
3946   GdkRectangle new_area;
3947   GdkRectangle common;
3948   GdkRegion *invalid_region;
3949
3950   old_area.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
3951   old_area.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
3952   old_area.width = ABS (tree_view->priv->rubber_band_x - tree_view->priv->press_start_x) + 1;
3953   old_area.height = ABS (tree_view->priv->rubber_band_y - tree_view->priv->press_start_y) + 1;
3954
3955   gdk_window_get_pointer (tree_view->priv->bin_window, &x, &y, NULL);
3956
3957   x = MAX (x, 0);
3958   y = MAX (y, 0) + tree_view->priv->dy;
3959
3960   new_area.x = MIN (tree_view->priv->press_start_x, x);
3961   new_area.y = MIN (tree_view->priv->press_start_y, y) - tree_view->priv->dy;
3962   new_area.width = ABS (x - tree_view->priv->press_start_x) + 1;
3963   new_area.height = ABS (y - tree_view->priv->press_start_y) + 1;
3964
3965   invalid_region = gdk_region_rectangle (&old_area);
3966   gdk_region_union_with_rect (invalid_region, &new_area);
3967
3968   gdk_rectangle_intersect (&old_area, &new_area, &common);
3969   if (common.width > 2 && common.height > 2)
3970     {
3971       GdkRegion *common_region;
3972
3973       /* make sure the border is invalidated */
3974       common.x += 1;
3975       common.y += 1;
3976       common.width -= 2;
3977       common.height -= 2;
3978
3979       common_region = gdk_region_rectangle (&common);
3980
3981       gdk_region_subtract (invalid_region, common_region);
3982       gdk_region_destroy (common_region);
3983     }
3984
3985   gdk_window_invalidate_region (tree_view->priv->bin_window, invalid_region, TRUE);
3986
3987   gdk_region_destroy (invalid_region);
3988
3989   tree_view->priv->rubber_band_x = x;
3990   tree_view->priv->rubber_band_y = y;
3991
3992   gtk_tree_view_update_rubber_band_selection (tree_view);
3993 }
3994
3995 static void
3996 gtk_tree_view_paint_rubber_band (GtkTreeView  *tree_view,
3997                                 GdkRectangle *area)
3998 {
3999   cairo_t *cr;
4000   GdkRectangle rect;
4001   GdkRectangle rubber_rect;
4002
4003   rubber_rect.x = MIN (tree_view->priv->press_start_x, tree_view->priv->rubber_band_x);
4004   rubber_rect.y = MIN (tree_view->priv->press_start_y, tree_view->priv->rubber_band_y) - tree_view->priv->dy;
4005   rubber_rect.width = ABS (tree_view->priv->press_start_x - tree_view->priv->rubber_band_x) + 1;
4006   rubber_rect.height = ABS (tree_view->priv->press_start_y - tree_view->priv->rubber_band_y) + 1;
4007
4008   if (!gdk_rectangle_intersect (&rubber_rect, area, &rect))
4009     return;
4010
4011   cr = gdk_cairo_create (tree_view->priv->bin_window);
4012   cairo_set_line_width (cr, 1.0);
4013
4014   cairo_set_source_rgba (cr,
4015                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4016                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4017                          GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.,
4018                          .25);
4019
4020   gdk_cairo_rectangle (cr, &rect);
4021   cairo_clip (cr);
4022   cairo_paint (cr);
4023
4024   cairo_set_source_rgb (cr,
4025                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].red / 65535.,
4026                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].green / 65535.,
4027                         GTK_WIDGET (tree_view)->style->fg[GTK_STATE_NORMAL].blue / 65535.);
4028
4029   cairo_rectangle (cr,
4030                    rubber_rect.x + 0.5, rubber_rect.y + 0.5,
4031                    rubber_rect.width - 1, rubber_rect.height - 1);
4032   cairo_stroke (cr);
4033
4034   cairo_destroy (cr);
4035 }
4036
4037 static gboolean
4038 gtk_tree_view_motion_bin_window (GtkWidget      *widget,
4039                                  GdkEventMotion *event)
4040 {
4041   GtkTreeView *tree_view;
4042   GtkRBTree *tree;
4043   GtkRBNode *node;
4044   gint new_y;
4045
4046   tree_view = (GtkTreeView *) widget;
4047
4048   if (tree_view->priv->tree == NULL)
4049     return FALSE;
4050
4051   if (tree_view->priv->rubber_band_status == RUBBER_BAND_MAYBE_START)
4052     {
4053       gtk_grab_add (GTK_WIDGET (tree_view));
4054       gtk_tree_view_update_rubber_band (tree_view);
4055
4056       tree_view->priv->rubber_band_status = RUBBER_BAND_ACTIVE;
4057     }
4058   else if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4059     {
4060       gtk_tree_view_update_rubber_band (tree_view);
4061
4062       add_scroll_timeout (tree_view);
4063     }
4064
4065   /* only check for an initiated drag when a button is pressed */
4066   if (tree_view->priv->pressed_button >= 0
4067       && !tree_view->priv->rubber_band_status)
4068     gtk_tree_view_maybe_begin_dragging_row (tree_view, event);
4069
4070   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
4071   if (new_y < 0)
4072     new_y = 0;
4073
4074   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4075
4076   /* If we are currently pressing down a button, we don't want to prelight anything else. */
4077   if ((tree_view->priv->button_pressed_node != NULL) &&
4078       (tree_view->priv->button_pressed_node != node))
4079     node = NULL;
4080
4081   prelight_or_select (tree_view, tree, node, event->x, event->y);
4082
4083   return TRUE;
4084 }
4085
4086 static gboolean
4087 gtk_tree_view_motion (GtkWidget      *widget,
4088                       GdkEventMotion *event)
4089 {
4090   GtkTreeView *tree_view;
4091
4092   tree_view = (GtkTreeView *) widget;
4093
4094   /* Resizing a column */
4095   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_RESIZE))
4096     return gtk_tree_view_motion_resize_column (widget, event);
4097
4098   /* Drag column */
4099   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
4100     return gtk_tree_view_motion_drag_column (widget, event);
4101
4102   /* Sanity check it */
4103   if (event->window == tree_view->priv->bin_window)
4104     return gtk_tree_view_motion_bin_window (widget, event);
4105
4106   return FALSE;
4107 }
4108
4109 /* Invalidate the focus rectangle near the edge of the bin_window; used when
4110  * the tree is empty.
4111  */
4112 static void
4113 invalidate_empty_focus (GtkTreeView *tree_view)
4114 {
4115   GdkRectangle area;
4116
4117   if (!GTK_WIDGET_HAS_FOCUS (tree_view))
4118     return;
4119
4120   area.x = 0;
4121   area.y = 0;
4122   gdk_drawable_get_size (tree_view->priv->bin_window, &area.width, &area.height);
4123   gdk_window_invalidate_rect (tree_view->priv->bin_window, &area, FALSE);
4124 }
4125
4126 /* Draws a focus rectangle near the edge of the bin_window; used when the tree
4127  * is empty.
4128  */
4129 static void
4130 draw_empty_focus (GtkTreeView *tree_view, GdkRectangle *clip_area)
4131 {
4132   gint w, h;
4133
4134   if (!GTK_WIDGET_HAS_FOCUS (tree_view))
4135     return;
4136
4137   gdk_drawable_get_size (tree_view->priv->bin_window, &w, &h);
4138
4139   w -= 2;
4140   h -= 2;
4141
4142   if (w > 0 && h > 0)
4143     gtk_paint_focus (GTK_WIDGET (tree_view)->style,
4144                      tree_view->priv->bin_window,
4145                      GTK_WIDGET_STATE (tree_view),
4146                      clip_area,
4147                      GTK_WIDGET (tree_view),
4148                      NULL,
4149                      1, 1, w, h);
4150 }
4151
4152 static void
4153 gtk_tree_view_draw_grid_lines (GtkTreeView    *tree_view,
4154                                GdkEventExpose *event,
4155                                gint            n_visible_columns)
4156 {
4157   GList *list = tree_view->priv->columns;
4158   gint i = 0;
4159   gint current_x = 0;
4160
4161   if (tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_VERTICAL
4162       && tree_view->priv->grid_lines != GTK_TREE_VIEW_GRID_LINES_BOTH)
4163     return;
4164
4165   /* Only draw the lines for visible rows and columns */
4166   for (list = tree_view->priv->columns; list; list = list->next, i++)
4167     {
4168       GtkTreeViewColumn *column = list->data;
4169
4170       /* We don't want a line for the last column */
4171       if (i == n_visible_columns - 1)
4172         break;
4173
4174       if (! column->visible)
4175         continue;
4176
4177       current_x += column->width;
4178
4179       gdk_draw_line (event->window,
4180                      tree_view->priv->grid_line_gc,
4181                      current_x - 1, 0,
4182                      current_x - 1, tree_view->priv->height);
4183     }
4184 }
4185
4186 /* Warning: Very scary function.
4187  * Modify at your own risk
4188  *
4189  * KEEP IN SYNC WITH gtk_tree_view_create_row_drag_icon()!
4190  * FIXME: It's not...
4191  */
4192 static gboolean
4193 gtk_tree_view_bin_expose (GtkWidget      *widget,
4194                           GdkEventExpose *event)
4195 {
4196   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4197   GtkTreePath *path;
4198   GtkRBTree *tree;
4199   GList *list;
4200   GtkRBNode *node;
4201   GtkRBNode *cursor = NULL;
4202   GtkRBTree *cursor_tree = NULL;
4203   GtkRBNode *drag_highlight = NULL;
4204   GtkRBTree *drag_highlight_tree = NULL;
4205   GtkTreeIter iter;
4206   gint new_y;
4207   gint y_offset, cell_offset;
4208   gint max_height;
4209   gint depth;
4210   GdkRectangle background_area;
4211   GdkRectangle cell_area;
4212   guint flags;
4213   gint highlight_x;
4214   gint expander_cell_width;
4215   gint bin_window_width;
4216   gint bin_window_height;
4217   GtkTreePath *cursor_path;
4218   GtkTreePath *drag_dest_path;
4219   GList *first_column, *last_column;
4220   gint vertical_separator;
4221   gint horizontal_separator;
4222   gint focus_line_width;
4223   gboolean allow_rules;
4224   gboolean has_special_cell;
4225   gboolean rtl;
4226   gint n_visible_columns;
4227   gint pointer_x, pointer_y;
4228   gint grid_line_width;
4229   gboolean got_pointer = FALSE;
4230   gboolean row_ending_details;
4231   gboolean draw_vgrid_lines, draw_hgrid_lines;
4232
4233   rtl = (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL);
4234
4235   gtk_widget_style_get (widget,
4236                         "horizontal-separator", &horizontal_separator,
4237                         "vertical-separator", &vertical_separator,
4238                         "allow-rules", &allow_rules,
4239                         "focus-line-width", &focus_line_width,
4240                         "row-ending-details", &row_ending_details,
4241                         NULL);
4242
4243   if (tree_view->priv->tree == NULL)
4244     {
4245       draw_empty_focus (tree_view, &event->area);
4246       return TRUE;
4247     }
4248
4249   /* clip event->area to the visible area */
4250   if (event->area.height < 0)
4251     return TRUE;
4252
4253   validate_visible_area (tree_view);
4254
4255   new_y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, event->area.y);
4256
4257   if (new_y < 0)
4258     new_y = 0;
4259   y_offset = -_gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
4260   gdk_drawable_get_size (tree_view->priv->bin_window,
4261                          &bin_window_width, &bin_window_height);
4262
4263   if (tree_view->priv->height < bin_window_height)
4264     {
4265       gtk_paint_flat_box (widget->style,
4266                           event->window,
4267                           widget->state,
4268                           GTK_SHADOW_NONE,
4269                           &event->area,
4270                           widget,
4271                           "cell_even",
4272                           0, tree_view->priv->height,
4273                           bin_window_width,
4274                           bin_window_height - tree_view->priv->height);
4275     }
4276
4277   if (node == NULL)
4278     return TRUE;
4279
4280   /* find the path for the node */
4281   path = _gtk_tree_view_find_path ((GtkTreeView *)widget,
4282                                    tree,
4283                                    node);
4284   gtk_tree_model_get_iter (tree_view->priv->model,
4285                            &iter,
4286                            path);
4287   depth = gtk_tree_path_get_depth (path);
4288   gtk_tree_path_free (path);
4289
4290   cursor_path = NULL;
4291   drag_dest_path = NULL;
4292
4293   if (tree_view->priv->cursor)
4294     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
4295
4296   if (cursor_path)
4297     _gtk_tree_view_find_node (tree_view, cursor_path,
4298                               &cursor_tree, &cursor);
4299
4300   if (tree_view->priv->drag_dest_row)
4301     drag_dest_path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
4302
4303   if (drag_dest_path)
4304     _gtk_tree_view_find_node (tree_view, drag_dest_path,
4305                               &drag_highlight_tree, &drag_highlight);
4306
4307   draw_vgrid_lines =
4308     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
4309     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4310   draw_hgrid_lines =
4311     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
4312     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
4313
4314   if (draw_vgrid_lines || draw_hgrid_lines)
4315     gtk_widget_style_get (widget, "grid-line-width", &grid_line_width, NULL);
4316
4317   n_visible_columns = 0;
4318   for (list = tree_view->priv->columns; list; list = list->next)
4319     {
4320       if (! GTK_TREE_VIEW_COLUMN (list->data)->visible)
4321         continue;
4322       n_visible_columns ++;
4323     }
4324
4325   /* Find the last column */
4326   for (last_column = g_list_last (tree_view->priv->columns);
4327        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
4328        last_column = last_column->prev)
4329     ;
4330
4331   /* and the first */
4332   for (first_column = g_list_first (tree_view->priv->columns);
4333        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
4334        first_column = first_column->next)
4335     ;
4336
4337   /* Actually process the expose event.  To do this, we want to
4338    * start at the first node of the event, and walk the tree in
4339    * order, drawing each successive node.
4340    */
4341
4342   do
4343     {
4344       gboolean parity;
4345       gboolean is_separator = FALSE;
4346       gboolean is_first = FALSE;
4347       gboolean is_last = FALSE;
4348
4349       is_separator = row_is_separator (tree_view, &iter, NULL);
4350
4351       max_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4352
4353       cell_offset = 0;
4354       highlight_x = 0; /* should match x coord of first cell */
4355       expander_cell_width = 0;
4356
4357       background_area.y = y_offset + event->area.y;
4358       background_area.height = max_height;
4359
4360       flags = 0;
4361
4362       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PRELIT))
4363         flags |= GTK_CELL_RENDERER_PRELIT;
4364
4365       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
4366         flags |= GTK_CELL_RENDERER_SELECTED;
4367
4368       parity = _gtk_rbtree_node_find_parity (tree, node);
4369
4370       /* we *need* to set cell data on all cells before the call
4371        * to _has_special_cell, else _has_special_cell() does not
4372        * return a correct value.
4373        */
4374       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4375            list;
4376            list = (rtl ? list->prev : list->next))
4377         {
4378           GtkTreeViewColumn *column = list->data;
4379           gtk_tree_view_column_cell_set_cell_data (column,
4380                                                    tree_view->priv->model,
4381                                                    &iter,
4382                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4383                                                    node->children?TRUE:FALSE);
4384         }
4385
4386       has_special_cell = gtk_tree_view_has_special_cell (tree_view);
4387
4388       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
4389            list;
4390            list = (rtl ? list->prev : list->next))
4391         {
4392           GtkTreeViewColumn *column = list->data;
4393           const gchar *detail = NULL;
4394           GtkStateType state;
4395
4396           if (!column->visible)
4397             continue;
4398
4399           if (cell_offset > event->area.x + event->area.width ||
4400               cell_offset + column->width < event->area.x)
4401             {
4402               cell_offset += column->width;
4403               continue;
4404             }
4405
4406           if (column->show_sort_indicator)
4407             flags |= GTK_CELL_RENDERER_SORTED;
4408           else
4409             flags &= ~GTK_CELL_RENDERER_SORTED;
4410
4411           if (cursor == node)
4412             flags |= GTK_CELL_RENDERER_FOCUSED;
4413           else
4414             flags &= ~GTK_CELL_RENDERER_FOCUSED;
4415
4416           background_area.x = cell_offset;
4417           background_area.width = column->width;
4418
4419           cell_area = background_area;
4420           cell_area.y += vertical_separator / 2;
4421           cell_area.x += horizontal_separator / 2;
4422           cell_area.height -= vertical_separator;
4423           cell_area.width -= horizontal_separator;
4424
4425           if (draw_vgrid_lines)
4426             {
4427               if (list == first_column)
4428                 {
4429                   cell_area.width -= grid_line_width / 2;
4430                 }
4431               else if (list == last_column)
4432                 {
4433                   cell_area.x += grid_line_width / 2;
4434                   cell_area.width -= grid_line_width / 2;
4435                 }
4436               else
4437                 {
4438                   cell_area.x += grid_line_width / 2;
4439                   cell_area.width -= grid_line_width;
4440                 }
4441             }
4442
4443           if (draw_hgrid_lines)
4444             {
4445               cell_area.y += grid_line_width / 2;
4446               cell_area.height -= grid_line_width;
4447             }
4448
4449           if (gdk_region_rect_in (event->region, &background_area) == GDK_OVERLAP_RECTANGLE_OUT)
4450             {
4451               cell_offset += column->width;
4452               continue;
4453             }
4454
4455           gtk_tree_view_column_cell_set_cell_data (column,
4456                                                    tree_view->priv->model,
4457                                                    &iter,
4458                                                    GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
4459                                                    node->children?TRUE:FALSE);
4460
4461           /* Select the detail for drawing the cell.  relevant
4462            * factors are parity, sortedness, and whether to
4463            * display rules.
4464            */
4465           if (allow_rules && tree_view->priv->has_rules)
4466             {
4467               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4468                   n_visible_columns >= 3)
4469                 {
4470                   if (parity)
4471                     detail = "cell_odd_ruled_sorted";
4472                   else
4473                     detail = "cell_even_ruled_sorted";
4474                 }
4475               else
4476                 {
4477                   if (parity)
4478                     detail = "cell_odd_ruled";
4479                   else
4480                     detail = "cell_even_ruled";
4481                 }
4482             }
4483           else
4484             {
4485               if ((flags & GTK_CELL_RENDERER_SORTED) &&
4486                   n_visible_columns >= 3)
4487                 {
4488                   if (parity)
4489                     detail = "cell_odd_sorted";
4490                   else
4491                     detail = "cell_even_sorted";
4492                 }
4493               else
4494                 {
4495                   if (parity)
4496                     detail = "cell_odd";
4497                   else
4498                     detail = "cell_even";
4499                 }
4500             }
4501
4502           g_assert (detail);
4503
4504           if (widget->state == GTK_STATE_INSENSITIVE)
4505             state = GTK_STATE_INSENSITIVE;
4506           else if (flags & GTK_CELL_RENDERER_SELECTED)
4507             state = GTK_STATE_SELECTED;
4508           else
4509             state = GTK_STATE_NORMAL;
4510
4511           /* Draw background */
4512           if (row_ending_details)
4513             {
4514               char new_detail[128];
4515
4516               is_first = (rtl ? !list->next : !list->prev);
4517               is_last = (rtl ? !list->prev : !list->next);
4518
4519               /* (I don't like the snprintfs either, but couldn't find a
4520                * less messy way).
4521                */
4522               if (is_first && is_last)
4523                 g_snprintf (new_detail, 127, "%s", detail);
4524               else if (is_first)
4525                 g_snprintf (new_detail, 127, "%s_start", detail);
4526               else if (is_last)
4527                 g_snprintf (new_detail, 127, "%s_end", detail);
4528               else
4529                 g_snprintf (new_detail, 128, "%s_middle", detail);
4530
4531               gtk_paint_flat_box (widget->style,
4532                                   event->window,
4533                                   state,
4534                                   GTK_SHADOW_NONE,
4535                                   &event->area,
4536                                   widget,
4537                                   new_detail,
4538                                   background_area.x,
4539                                   background_area.y,
4540                                   background_area.width,
4541                                   background_area.height);
4542             }
4543           else
4544             {
4545               gtk_paint_flat_box (widget->style,
4546                                   event->window,
4547                                   state,
4548                                   GTK_SHADOW_NONE,
4549                                   &event->area,
4550                                   widget,
4551                                   detail,
4552                                   background_area.x,
4553                                   background_area.y,
4554                                   background_area.width,
4555                                   background_area.height);
4556             }
4557
4558           if (draw_hgrid_lines)
4559             {
4560               if (background_area.y > 0)
4561                 gdk_draw_line (event->window,
4562                                tree_view->priv->grid_line_gc,
4563                                background_area.x, background_area.y,
4564                                background_area.x + background_area.width,
4565                                background_area.y);
4566
4567               if (y_offset + max_height >= event->area.height)
4568                 gdk_draw_line (event->window,
4569                                tree_view->priv->grid_line_gc,
4570                                background_area.x, background_area.y + max_height,
4571                                background_area.x + background_area.width,
4572                                background_area.y + max_height);
4573             }
4574
4575           if (gtk_tree_view_is_expander_column (tree_view, column) &&
4576               tree_view->priv->tree_lines_enabled)
4577             {
4578               gint x = background_area.x;
4579               gint mult = rtl ? -1 : 1;
4580               gint y0 = background_area.y;
4581               gint y1 = background_area.y + background_area.height/2;
4582               gint y2 = background_area.y + background_area.height;
4583
4584               if (rtl)
4585                 x += background_area.width - 1;
4586
4587               if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT
4588                   && depth > 1)
4589                 {
4590                   gdk_draw_line (event->window,
4591                                  tree_view->priv->tree_line_gc,
4592                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4593                                  y1,
4594                                  x + tree_view->priv->expander_size * (depth - 1.1) * mult,
4595                                  y1);
4596                 }
4597               else if (depth > 1)
4598                 {
4599                   gdk_draw_line (event->window,
4600                                  tree_view->priv->tree_line_gc,
4601                                  x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4602                                  y1,
4603                                  x + tree_view->priv->expander_size * (depth - 0.5) * mult,
4604                                  y1);
4605                 }
4606
4607               if (depth > 1)
4608                 {
4609                   gint i;
4610                   GtkRBNode *tmp_node;
4611                   GtkRBTree *tmp_tree;
4612
4613                   if (!_gtk_rbtree_next (tree, node))
4614                     gdk_draw_line (event->window,
4615                                    tree_view->priv->tree_line_gc,
4616                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4617                                    y0,
4618                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4619                                    y1);
4620                   else
4621                     gdk_draw_line (event->window,
4622                                    tree_view->priv->tree_line_gc,
4623                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4624                                    y0,
4625                                    x + tree_view->priv->expander_size * (depth - 1.5) * mult,
4626                                    y2);
4627
4628                   tmp_node = tree->parent_node;
4629                   tmp_tree = tree->parent_tree;
4630
4631                   for (i = depth - 2; i > 0; i--)
4632                     {
4633                       if (_gtk_rbtree_next (tmp_tree, tmp_node))
4634                         gdk_draw_line (event->window,
4635                                        tree_view->priv->tree_line_gc,
4636                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4637                                        y0,
4638                                        x + tree_view->priv->expander_size * (i - 0.5) * mult,
4639                                        y2);
4640
4641                       tmp_node = tmp_tree->parent_node;
4642                       tmp_tree = tmp_tree->parent_tree;
4643                     }
4644                 }
4645             }
4646
4647           if (gtk_tree_view_is_expander_column (tree_view, column))
4648             {
4649               if (!rtl)
4650                 cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
4651               cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
4652
4653               if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
4654                 {
4655                   if (!rtl)
4656                     cell_area.x += depth * tree_view->priv->expander_size;
4657                   cell_area.width -= depth * tree_view->priv->expander_size;
4658                 }
4659
4660               /* If we have an expander column, the highlight underline
4661                * starts with that column, so that it indicates which
4662                * level of the tree we're dropping at.
4663                */
4664               highlight_x = cell_area.x;
4665               expander_cell_width = cell_area.width;
4666
4667               if (is_separator)
4668                 gtk_paint_hline (widget->style,
4669                                  event->window,
4670                                  state,
4671                                  &cell_area,
4672                                  widget,
4673                                  NULL,
4674                                  cell_area.x,
4675                                  cell_area.x + cell_area.width,
4676                                  cell_area.y + cell_area.height / 2);
4677               else
4678                 _gtk_tree_view_column_cell_render (column,
4679                                                    event->window,
4680                                                    &background_area,
4681                                                    &cell_area,
4682                                                    &event->area,
4683                                                    flags);
4684               if (TREE_VIEW_DRAW_EXPANDERS(tree_view)
4685                   && (node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT)
4686                 {
4687                   if (!got_pointer)
4688                     {
4689                       gdk_window_get_pointer (tree_view->priv->bin_window,
4690                                               &pointer_x, &pointer_y, NULL);
4691                       got_pointer = TRUE;
4692                     }
4693
4694                   gtk_tree_view_draw_arrow (GTK_TREE_VIEW (widget),
4695                                             tree,
4696                                             node,
4697                                             pointer_x, pointer_y);
4698                 }
4699             }
4700           else
4701             {
4702               if (is_separator)
4703                 gtk_paint_hline (widget->style,
4704                                  event->window,
4705                                  state,
4706                                  &cell_area,
4707                                  widget,
4708                                  NULL,
4709                                  cell_area.x,
4710                                  cell_area.x + cell_area.width,
4711                                  cell_area.y + cell_area.height / 2);
4712               else
4713                 _gtk_tree_view_column_cell_render (column,
4714                                                    event->window,
4715                                                    &background_area,
4716                                                    &cell_area,
4717                                                    &event->area,
4718                                                    flags);
4719             }
4720           if (node == cursor && has_special_cell &&
4721               ((column == tree_view->priv->focus_column &&
4722                 GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4723                 GTK_WIDGET_HAS_FOCUS (widget)) ||
4724                (column == tree_view->priv->edited_column)))
4725             {
4726               _gtk_tree_view_column_cell_draw_focus (column,
4727                                                      event->window,
4728                                                      &background_area,
4729                                                      &cell_area,
4730                                                      &event->area,
4731                                                      flags);
4732             }
4733           cell_offset += column->width;
4734         }
4735
4736       if (node == drag_highlight)
4737         {
4738           /* Draw indicator for the drop
4739            */
4740           gint highlight_y = -1;
4741           GtkRBTree *tree = NULL;
4742           GtkRBNode *node = NULL;
4743           gint width;
4744
4745           switch (tree_view->priv->drag_dest_pos)
4746             {
4747             case GTK_TREE_VIEW_DROP_BEFORE:
4748               highlight_y = background_area.y - 1;
4749               if (highlight_y < 0)
4750                       highlight_y = 0;
4751               break;
4752
4753             case GTK_TREE_VIEW_DROP_AFTER:
4754               highlight_y = background_area.y + background_area.height - 1;
4755               break;
4756
4757             case GTK_TREE_VIEW_DROP_INTO_OR_BEFORE:
4758             case GTK_TREE_VIEW_DROP_INTO_OR_AFTER:
4759               _gtk_tree_view_find_node (tree_view, drag_dest_path, &tree, &node);
4760
4761               if (tree == NULL)
4762                 break;
4763               gdk_drawable_get_size (tree_view->priv->bin_window,
4764                                      &width, NULL);
4765
4766               if (row_ending_details)
4767                 gtk_paint_focus (widget->style,
4768                                  tree_view->priv->bin_window,
4769                                  GTK_WIDGET_STATE (widget),
4770                                  &event->area,
4771                                  widget,
4772                                  (is_first
4773                                   ? (is_last ? "treeview-drop-indicator" : "treeview-drop-indicator-left" )
4774                                   : (is_last ? "treeview-drop-indicator-right" : "tree-view-drop-indicator-middle" )),
4775                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4776                                  - focus_line_width / 2,
4777                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4778                                - focus_line_width + 1);
4779               else
4780                 gtk_paint_focus (widget->style,
4781                                  tree_view->priv->bin_window,
4782                                  GTK_WIDGET_STATE (widget),
4783                                  &event->area,
4784                                  widget,
4785                                  "treeview-drop-indicator",
4786                                  0, BACKGROUND_FIRST_PIXEL (tree_view, tree, node)
4787                                  - focus_line_width / 2,
4788                                  width, ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
4789                                  - focus_line_width + 1);
4790               break;
4791             }
4792
4793           if (highlight_y >= 0)
4794             {
4795               gdk_draw_line (event->window,
4796                              widget->style->fg_gc[GTK_WIDGET_STATE (widget)],
4797                              rtl ? highlight_x + expander_cell_width : highlight_x,
4798                              highlight_y,
4799                              rtl ? 0 : bin_window_width,
4800                              highlight_y);
4801             }
4802         }
4803
4804       /* draw the big row-spanning focus rectangle, if needed */
4805       if (!has_special_cell && node == cursor &&
4806           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS) &&
4807           GTK_WIDGET_HAS_FOCUS (widget))
4808         {
4809           gint tmp_y, tmp_height;
4810           gint width;
4811           GtkStateType focus_rect_state;
4812
4813           focus_rect_state =
4814             flags & GTK_CELL_RENDERER_SELECTED ? GTK_STATE_SELECTED :
4815             (flags & GTK_CELL_RENDERER_PRELIT ? GTK_STATE_PRELIGHT :
4816              (flags & GTK_CELL_RENDERER_INSENSITIVE ? GTK_STATE_INSENSITIVE :
4817               GTK_STATE_NORMAL));
4818
4819           gdk_drawable_get_size (tree_view->priv->bin_window,
4820                                  &width, NULL);
4821
4822           if (draw_hgrid_lines)
4823             {
4824               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node) + grid_line_width / 2;
4825               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node)) - grid_line_width;
4826             }
4827           else
4828             {
4829               tmp_y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
4830               tmp_height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
4831             }
4832
4833           if (row_ending_details)
4834             gtk_paint_focus (widget->style,
4835                              tree_view->priv->bin_window,
4836                              focus_rect_state,
4837                              &event->area,
4838                              widget,
4839                              (is_first
4840                               ? (is_last ? "treeview" : "treeview-left" )
4841                               : (is_last ? "treeview-right" : "treeview-middle" )),
4842                              0, tmp_y,
4843                              width, tmp_height);
4844           else
4845             gtk_paint_focus (widget->style,
4846                              tree_view->priv->bin_window,
4847                              focus_rect_state,
4848                              &event->area,
4849                              widget,
4850                              "treeview",
4851                              0, tmp_y,
4852                              width, tmp_height);
4853         }
4854
4855       y_offset += max_height;
4856       if (node->children)
4857         {
4858           GtkTreeIter parent = iter;
4859           gboolean has_child;
4860
4861           tree = node->children;
4862           node = tree->root;
4863
4864           g_assert (node != tree->nil);
4865
4866           while (node->left != tree->nil)
4867             node = node->left;
4868           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
4869                                                     &iter,
4870                                                     &parent);
4871           depth++;
4872
4873           /* Sanity Check! */
4874           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
4875         }
4876       else
4877         {
4878           gboolean done = FALSE;
4879
4880           do
4881             {
4882               node = _gtk_rbtree_next (tree, node);
4883               if (node != NULL)
4884                 {
4885                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
4886                   done = TRUE;
4887
4888                   /* Sanity Check! */
4889                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
4890                 }
4891               else
4892                 {
4893                   GtkTreeIter parent_iter = iter;
4894                   gboolean has_parent;
4895
4896                   node = tree->parent_node;
4897                   tree = tree->parent_tree;
4898                   if (tree == NULL)
4899                     /* we should go to done to free some memory */
4900                     goto done;
4901                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
4902                                                            &iter,
4903                                                            &parent_iter);
4904                   depth--;
4905
4906                   /* Sanity check */
4907                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
4908                 }
4909             }
4910           while (!done);
4911         }
4912     }
4913   while (y_offset < event->area.height);
4914
4915 done:
4916   gtk_tree_view_draw_grid_lines (tree_view, event, n_visible_columns);
4917
4918  if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
4919    {
4920      GdkRectangle *rectangles;
4921      gint n_rectangles;
4922
4923      gdk_region_get_rectangles (event->region,
4924                                 &rectangles,
4925                                 &n_rectangles);
4926
4927      while (n_rectangles--)
4928        gtk_tree_view_paint_rubber_band (tree_view, &rectangles[n_rectangles]);
4929
4930      g_free (rectangles);
4931    }
4932
4933   if (cursor_path)
4934     gtk_tree_path_free (cursor_path);
4935
4936   if (drag_dest_path)
4937     gtk_tree_path_free (drag_dest_path);
4938
4939   return FALSE;
4940 }
4941
4942 static gboolean
4943 gtk_tree_view_expose (GtkWidget      *widget,
4944                       GdkEventExpose *event)
4945 {
4946   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
4947
4948   if (event->window == tree_view->priv->bin_window)
4949     {
4950       gboolean retval;
4951       GList *tmp_list;
4952
4953       retval = gtk_tree_view_bin_expose (widget, event);
4954
4955       /* We can't just chain up to Container::expose as it will try to send the
4956        * event to the headers, so we handle propagating it to our children
4957        * (eg. widgets being edited) ourselves.
4958        */
4959       tmp_list = tree_view->priv->children;
4960       while (tmp_list)
4961         {
4962           GtkTreeViewChild *child = tmp_list->data;
4963           tmp_list = tmp_list->next;
4964
4965           gtk_container_propagate_expose (GTK_CONTAINER (tree_view), child->widget, event);
4966         }
4967
4968       return retval;
4969     }
4970
4971   else if (event->window == tree_view->priv->header_window)
4972     {
4973       GList *list;
4974
4975       for (list = tree_view->priv->columns; list != NULL; list = list->next)
4976         {
4977           GtkTreeViewColumn *column = list->data;
4978
4979           if (column == tree_view->priv->drag_column)
4980             continue;
4981
4982           if (column->visible)
4983             gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
4984                                             column->button,
4985                                             event);
4986         }
4987     }
4988   else if (event->window == tree_view->priv->drag_window)
4989     {
4990       gtk_container_propagate_expose (GTK_CONTAINER (tree_view),
4991                                       tree_view->priv->drag_column->button,
4992                                       event);
4993     }
4994   return TRUE;
4995 }
4996
4997 enum
4998 {
4999   DROP_HOME,
5000   DROP_RIGHT,
5001   DROP_LEFT,
5002   DROP_END
5003 };
5004
5005 /* returns 0x1 when no column has been found -- yes it's hackish */
5006 static GtkTreeViewColumn *
5007 gtk_tree_view_get_drop_column (GtkTreeView       *tree_view,
5008                                GtkTreeViewColumn *column,
5009                                gint               drop_position)
5010 {
5011   GtkTreeViewColumn *left_column = NULL;
5012   GtkTreeViewColumn *cur_column = NULL;
5013   GList *tmp_list;
5014
5015   if (!column->reorderable)
5016     return (GtkTreeViewColumn *)0x1;
5017
5018   switch (drop_position)
5019     {
5020       case DROP_HOME:
5021         /* find first column where we can drop */
5022         tmp_list = tree_view->priv->columns;
5023         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5024           return (GtkTreeViewColumn *)0x1;
5025
5026         while (tmp_list)
5027           {
5028             g_assert (tmp_list);
5029
5030             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5031             tmp_list = tmp_list->next;
5032
5033             if (left_column && left_column->visible == FALSE)
5034               continue;
5035
5036             if (!tree_view->priv->column_drop_func)
5037               return left_column;
5038
5039             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5040               {
5041                 left_column = cur_column;
5042                 continue;
5043               }
5044
5045             return left_column;
5046           }
5047
5048         if (!tree_view->priv->column_drop_func)
5049           return left_column;
5050
5051         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5052           return left_column;
5053         else
5054           return (GtkTreeViewColumn *)0x1;
5055         break;
5056
5057       case DROP_RIGHT:
5058         /* find first column after column where we can drop */
5059         tmp_list = tree_view->priv->columns;
5060
5061         for (; tmp_list; tmp_list = tmp_list->next)
5062           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5063             break;
5064
5065         if (!tmp_list || !tmp_list->next)
5066           return (GtkTreeViewColumn *)0x1;
5067
5068         tmp_list = tmp_list->next;
5069         left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5070         tmp_list = tmp_list->next;
5071
5072         while (tmp_list)
5073           {
5074             g_assert (tmp_list);
5075
5076             cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5077             tmp_list = tmp_list->next;
5078
5079             if (left_column && left_column->visible == FALSE)
5080               {
5081                 left_column = cur_column;
5082                 if (tmp_list)
5083                   tmp_list = tmp_list->next;
5084                 continue;
5085               }
5086
5087             if (!tree_view->priv->column_drop_func)
5088               return left_column;
5089
5090             if (!tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5091               {
5092                 left_column = cur_column;
5093                 continue;
5094               }
5095
5096             return left_column;
5097           }
5098
5099         if (!tree_view->priv->column_drop_func)
5100           return left_column;
5101
5102         if (tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data))
5103           return left_column;
5104         else
5105           return (GtkTreeViewColumn *)0x1;
5106         break;
5107
5108       case DROP_LEFT:
5109         /* find first column before column where we can drop */
5110         tmp_list = tree_view->priv->columns;
5111
5112         for (; tmp_list; tmp_list = tmp_list->next)
5113           if (GTK_TREE_VIEW_COLUMN (tmp_list->data) == column)
5114             break;
5115
5116         if (!tmp_list || !tmp_list->prev)
5117           return (GtkTreeViewColumn *)0x1;
5118
5119         tmp_list = tmp_list->prev;
5120         cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5121         tmp_list = tmp_list->prev;
5122
5123         while (tmp_list)
5124           {
5125             g_assert (tmp_list);
5126
5127             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5128
5129             if (left_column && !left_column->visible)
5130               {
5131                 /*if (!tmp_list->prev)
5132                   return (GtkTreeViewColumn *)0x1;
5133                   */
5134 /*
5135                 cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->prev->data);
5136                 tmp_list = tmp_list->prev->prev;
5137                 continue;*/
5138
5139                 cur_column = left_column;
5140                 if (tmp_list)
5141                   tmp_list = tmp_list->prev;
5142                 continue;
5143               }
5144
5145             if (!tree_view->priv->column_drop_func)
5146               return left_column;
5147
5148             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5149               return left_column;
5150
5151             cur_column = left_column;
5152             tmp_list = tmp_list->prev;
5153           }
5154
5155         if (!tree_view->priv->column_drop_func)
5156           return NULL;
5157
5158         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5159           return NULL;
5160         else
5161           return (GtkTreeViewColumn *)0x1;
5162         break;
5163
5164       case DROP_END:
5165         /* same as DROP_HOME case, but doing it backwards */
5166         tmp_list = g_list_last (tree_view->priv->columns);
5167         cur_column = NULL;
5168
5169         if (column == GTK_TREE_VIEW_COLUMN (tmp_list->data))
5170           return (GtkTreeViewColumn *)0x1;
5171
5172         while (tmp_list)
5173           {
5174             g_assert (tmp_list);
5175
5176             left_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
5177
5178             if (left_column && !left_column->visible)
5179               {
5180                 cur_column = left_column;
5181                 tmp_list = tmp_list->prev;
5182               }
5183
5184             if (!tree_view->priv->column_drop_func)
5185               return left_column;
5186
5187             if (tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
5188               return left_column;
5189
5190             cur_column = left_column;
5191             tmp_list = tmp_list->prev;
5192           }
5193
5194         if (!tree_view->priv->column_drop_func)
5195           return NULL;
5196
5197         if (tree_view->priv->column_drop_func (tree_view, column, NULL, cur_column, tree_view->priv->column_drop_func_data))
5198           return NULL;
5199         else
5200           return (GtkTreeViewColumn *)0x1;
5201         break;
5202     }
5203
5204   return (GtkTreeViewColumn *)0x1;
5205 }
5206
5207 static gboolean
5208 gtk_tree_view_key_press (GtkWidget   *widget,
5209                          GdkEventKey *event)
5210 {
5211   GtkTreeView *tree_view = (GtkTreeView *) widget;
5212
5213   if (tree_view->priv->rubber_band_status)
5214     {
5215       if (event->keyval == GDK_Escape)
5216         gtk_tree_view_stop_rubber_band (tree_view);
5217
5218       return TRUE;
5219     }
5220
5221   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG))
5222     {
5223       if (event->keyval == GDK_Escape)
5224         {
5225           tree_view->priv->cur_reorder = NULL;
5226           gtk_tree_view_button_release_drag_column (widget, NULL);
5227         }
5228       return TRUE;
5229     }
5230
5231   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
5232     {
5233       GList *focus_column;
5234       gboolean rtl;
5235
5236       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
5237
5238       for (focus_column = tree_view->priv->columns;
5239            focus_column;
5240            focus_column = focus_column->next)
5241         {
5242           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5243
5244           if (GTK_WIDGET_HAS_FOCUS (column->button))
5245             break;
5246         }
5247
5248       if (focus_column &&
5249           (event->state & GDK_SHIFT_MASK) && (event->state & GDK_MOD1_MASK) &&
5250           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5251            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right))
5252         {
5253           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5254
5255           if (!column->resizable)
5256             {
5257               gtk_widget_error_bell (widget);
5258               return TRUE;
5259             }
5260
5261           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5262               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5263             {
5264               gint old_width = column->resized_width;
5265
5266               column->resized_width = MAX (column->resized_width,
5267                                            column->width);
5268               column->resized_width -= 2;
5269               if (column->resized_width < 0)
5270                 column->resized_width = 0;
5271
5272               if (column->min_width == -1)
5273                 column->resized_width = MAX (column->button->requisition.width,
5274                                              column->resized_width);
5275               else
5276                 column->resized_width = MAX (column->min_width,
5277                                              column->resized_width);
5278
5279               if (column->max_width != -1)
5280                 column->resized_width = MIN (column->resized_width,
5281                                              column->max_width);
5282
5283               column->use_resized_width = TRUE;
5284
5285               if (column->resized_width != old_width)
5286                 gtk_widget_queue_resize (widget);
5287               else
5288                 gtk_widget_error_bell (widget);
5289             }
5290           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5291                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5292             {
5293               gint old_width = column->resized_width;
5294
5295               column->resized_width = MAX (column->resized_width,
5296                                            column->width);
5297               column->resized_width += 2;
5298
5299               if (column->max_width != -1)
5300                 column->resized_width = MIN (column->resized_width,
5301                                              column->max_width);
5302
5303               column->use_resized_width = TRUE;
5304
5305               if (column->resized_width != old_width)
5306                 gtk_widget_queue_resize (widget);
5307               else
5308                 gtk_widget_error_bell (widget);
5309             }
5310
5311           return TRUE;
5312         }
5313
5314       if (focus_column &&
5315           (event->state & GDK_MOD1_MASK) &&
5316           (event->keyval == GDK_Left || event->keyval == GDK_KP_Left
5317            || event->keyval == GDK_Right || event->keyval == GDK_KP_Right
5318            || event->keyval == GDK_Home || event->keyval == GDK_KP_Home
5319            || event->keyval == GDK_End || event->keyval == GDK_KP_End))
5320         {
5321           GtkTreeViewColumn *column = GTK_TREE_VIEW_COLUMN (focus_column->data);
5322
5323           if (event->keyval == (rtl ? GDK_Right : GDK_Left)
5324               || event->keyval == (rtl ? GDK_KP_Right : GDK_KP_Left))
5325             {
5326               GtkTreeViewColumn *col;
5327               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_LEFT);
5328               if (col != (GtkTreeViewColumn *)0x1)
5329                 gtk_tree_view_move_column_after (tree_view, column, col);
5330               else
5331                 gtk_widget_error_bell (widget);
5332             }
5333           else if (event->keyval == (rtl ? GDK_Left : GDK_Right)
5334                    || event->keyval == (rtl ? GDK_KP_Left : GDK_KP_Right))
5335             {
5336               GtkTreeViewColumn *col;
5337               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_RIGHT);
5338               if (col != (GtkTreeViewColumn *)0x1)
5339                 gtk_tree_view_move_column_after (tree_view, column, col);
5340               else
5341                 gtk_widget_error_bell (widget);
5342             }
5343           else if (event->keyval == GDK_Home || event->keyval == GDK_KP_Home)
5344             {
5345               GtkTreeViewColumn *col;
5346               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_HOME);
5347               if (col != (GtkTreeViewColumn *)0x1)
5348                 gtk_tree_view_move_column_after (tree_view, column, col);
5349               else
5350                 gtk_widget_error_bell (widget);
5351             }
5352           else if (event->keyval == GDK_End || event->keyval == GDK_KP_End)
5353             {
5354               GtkTreeViewColumn *col;
5355               col = gtk_tree_view_get_drop_column (tree_view, column, DROP_END);
5356               if (col != (GtkTreeViewColumn *)0x1)
5357                 gtk_tree_view_move_column_after (tree_view, column, col);
5358               else
5359                 gtk_widget_error_bell (widget);
5360             }
5361
5362           return TRUE;
5363         }
5364     }
5365
5366   /* Chain up to the parent class.  It handles the keybindings. */
5367   if (GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_press_event (widget, event))
5368     return TRUE;
5369
5370   if (tree_view->priv->search_entry_avoid_unhandled_binding)
5371     {
5372       tree_view->priv->search_entry_avoid_unhandled_binding = FALSE;
5373       return FALSE;
5374     }
5375
5376   /* We pass the event to the search_entry.  If its text changes, then we start
5377    * the typeahead find capabilities. */
5378   if (GTK_WIDGET_HAS_FOCUS (tree_view)
5379       && tree_view->priv->enable_search
5380       && !tree_view->priv->search_custom_entry_set)
5381     {
5382       GdkEvent *new_event;
5383       char *old_text;
5384       const char *new_text;
5385       gboolean retval;
5386       GdkScreen *screen;
5387       gboolean text_modified;
5388       gulong popup_menu_id;
5389
5390       gtk_tree_view_ensure_interactive_directory (tree_view);
5391
5392       /* Make a copy of the current text */
5393       old_text = g_strdup (gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry)));
5394       new_event = gdk_event_copy ((GdkEvent *) event);
5395       g_object_unref (((GdkEventKey *) new_event)->window);
5396       ((GdkEventKey *) new_event)->window = g_object_ref (tree_view->priv->search_window->window);
5397       gtk_widget_realize (tree_view->priv->search_window);
5398
5399       popup_menu_id = g_signal_connect (tree_view->priv->search_entry,
5400                                         "popup-menu", G_CALLBACK (gtk_true),
5401                                         NULL);
5402
5403       /* Move the entry off screen */
5404       screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
5405       gtk_window_move (GTK_WINDOW (tree_view->priv->search_window),
5406                        gdk_screen_get_width (screen) + 1,
5407                        gdk_screen_get_height (screen) + 1);
5408       gtk_widget_show (tree_view->priv->search_window);
5409
5410       /* Send the event to the window.  If the preedit_changed signal is emitted
5411        * during this event, we will set priv->imcontext_changed  */
5412       tree_view->priv->imcontext_changed = FALSE;
5413       retval = gtk_widget_event (tree_view->priv->search_window, new_event);
5414       gdk_event_free (new_event);
5415       gtk_widget_hide (tree_view->priv->search_window);
5416
5417       g_signal_handler_disconnect (tree_view->priv->search_entry,
5418                                    popup_menu_id);
5419
5420       /* We check to make sure that the entry tried to handle the text, and that
5421        * the text has changed.
5422        */
5423       new_text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
5424       text_modified = strcmp (old_text, new_text) != 0;
5425       g_free (old_text);
5426       if (tree_view->priv->imcontext_changed ||    /* we're in a preedit */
5427           (retval && text_modified))               /* ...or the text was modified */
5428         {
5429           if (gtk_tree_view_real_start_interactive_search (tree_view, FALSE))
5430             {
5431               gtk_widget_grab_focus (GTK_WIDGET (tree_view));
5432               return TRUE;
5433             }
5434           else
5435             {
5436               gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
5437               return FALSE;
5438             }
5439         }
5440     }
5441
5442   return FALSE;
5443 }
5444
5445 static gboolean
5446 gtk_tree_view_key_release (GtkWidget   *widget,
5447                            GdkEventKey *event)
5448 {
5449   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5450
5451   if (tree_view->priv->rubber_band_status)
5452     return TRUE;
5453
5454   return GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->key_release_event (widget, event);
5455 }
5456
5457 /* FIXME Is this function necessary? Can I get an enter_notify event
5458  * w/o either an expose event or a mouse motion event?
5459  */
5460 static gboolean
5461 gtk_tree_view_enter_notify (GtkWidget        *widget,
5462                             GdkEventCrossing *event)
5463 {
5464   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
5465   GtkRBTree *tree;
5466   GtkRBNode *node;
5467   gint new_y;
5468
5469   /* Sanity check it */
5470   if (event->window != tree_view->priv->bin_window)
5471     return FALSE;
5472
5473   if (tree_view->priv->tree == NULL)
5474     return FALSE;
5475
5476   /* find the node internally */
5477   new_y = TREE_WINDOW_Y_TO_RBTREE_Y(tree_view, event->y);
5478   if (new_y < 0)
5479     new_y = 0;
5480   _gtk_rbtree_find_offset (tree_view->priv->tree, new_y, &tree, &node);
5481
5482   if ((tree_view->priv->button_pressed_node == NULL) ||
5483       (tree_view->priv->button_pressed_node == node))
5484     prelight_or_select (tree_view, tree, node, event->x, event->y);
5485
5486   return TRUE;
5487 }
5488
5489 static gboolean
5490 gtk_tree_view_leave_notify (GtkWidget        *widget,
5491                             GdkEventCrossing *event)
5492 {
5493   GtkTreeView *tree_view;
5494
5495   if (event->mode == GDK_CROSSING_GRAB)
5496     return TRUE;
5497
5498   tree_view = GTK_TREE_VIEW (widget);
5499
5500   if (tree_view->priv->prelight_node)
5501     _gtk_tree_view_queue_draw_node (tree_view,
5502                                    tree_view->priv->prelight_tree,
5503                                    tree_view->priv->prelight_node,
5504                                    NULL);
5505
5506   prelight_or_select (tree_view,
5507                       NULL, NULL,
5508                       -1000, -1000); /* coords not possibly over an arrow */
5509
5510   return TRUE;
5511 }
5512
5513
5514 static gint
5515 gtk_tree_view_focus_out (GtkWidget     *widget,
5516                          GdkEventFocus *event)
5517 {
5518   GtkTreeView *tree_view;
5519
5520   tree_view = GTK_TREE_VIEW (widget);
5521
5522   gtk_widget_queue_draw (widget);
5523
5524   /* destroy interactive search dialog */
5525   if (tree_view->priv->search_window)
5526     gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
5527
5528   return FALSE;
5529 }
5530
5531
5532 /* Incremental Reflow
5533  */
5534
5535 static void
5536 gtk_tree_view_node_queue_redraw (GtkTreeView *tree_view,
5537                                  GtkRBTree   *tree,
5538                                  GtkRBNode   *node)
5539 {
5540   gint y;
5541
5542   y = _gtk_rbtree_node_find_offset (tree, node)
5543     - tree_view->priv->vadjustment->value
5544     + TREE_VIEW_HEADER_HEIGHT (tree_view);
5545
5546   gtk_widget_queue_draw_area (GTK_WIDGET (tree_view),
5547                               0, y,
5548                               GTK_WIDGET (tree_view)->allocation.width,
5549                               GTK_RBNODE_GET_HEIGHT (node));
5550 }
5551
5552 static gboolean
5553 node_is_visible (GtkTreeView *tree_view,
5554                  GtkRBTree   *tree,
5555                  GtkRBNode   *node)
5556 {
5557   int y;
5558   int height;
5559
5560   y = _gtk_rbtree_node_find_offset (tree, node);
5561   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5562
5563   if (y >= tree_view->priv->vadjustment->value &&
5564       y + height <= (tree_view->priv->vadjustment->value
5565                      + tree_view->priv->vadjustment->page_size))
5566     return TRUE;
5567
5568   return FALSE;
5569 }
5570
5571 /* Returns TRUE if it updated the size
5572  */
5573 static gboolean
5574 validate_row (GtkTreeView *tree_view,
5575               GtkRBTree   *tree,
5576               GtkRBNode   *node,
5577               GtkTreeIter *iter,
5578               GtkTreePath *path)
5579 {
5580   GtkTreeViewColumn *column;
5581   GList *list, *first_column, *last_column;
5582   gint height = 0;
5583   gint horizontal_separator;
5584   gint vertical_separator;
5585   gint focus_line_width;
5586   gint depth = gtk_tree_path_get_depth (path);
5587   gboolean retval = FALSE;
5588   gboolean is_separator = FALSE;
5589   gboolean draw_vgrid_lines, draw_hgrid_lines;
5590   gint focus_pad;
5591   gint grid_line_width;
5592   gboolean wide_separators;
5593   gint separator_height;
5594
5595   /* double check the row needs validating */
5596   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) &&
5597       ! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5598     return FALSE;
5599
5600   is_separator = row_is_separator (tree_view, iter, NULL);
5601
5602   gtk_widget_style_get (GTK_WIDGET (tree_view),
5603                         "focus-padding", &focus_pad,
5604                         "focus-line-width", &focus_line_width,
5605                         "horizontal-separator", &horizontal_separator,
5606                         "vertical-separator", &vertical_separator,
5607                         "grid-line-width", &grid_line_width,
5608                         "wide-separators",  &wide_separators,
5609                         "separator-height", &separator_height,
5610                         NULL);
5611
5612   draw_vgrid_lines =
5613     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_VERTICAL
5614     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5615   draw_hgrid_lines =
5616     tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_HORIZONTAL
5617     || tree_view->priv->grid_lines == GTK_TREE_VIEW_GRID_LINES_BOTH;
5618
5619   for (last_column = g_list_last (tree_view->priv->columns);
5620        last_column && !(GTK_TREE_VIEW_COLUMN (last_column->data)->visible);
5621        last_column = last_column->prev)
5622     ;
5623
5624   for (first_column = g_list_first (tree_view->priv->columns);
5625        first_column && !(GTK_TREE_VIEW_COLUMN (first_column->data)->visible);
5626        first_column = first_column->next)
5627     ;
5628
5629   for (list = tree_view->priv->columns; list; list = list->next)
5630     {
5631       gint tmp_width;
5632       gint tmp_height;
5633
5634       column = list->data;
5635
5636       if (! column->visible)
5637         continue;
5638
5639       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID) && !column->dirty)
5640         continue;
5641
5642       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, iter,
5643                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
5644                                                node->children?TRUE:FALSE);
5645       gtk_tree_view_column_cell_get_size (column,
5646                                           NULL, NULL, NULL,
5647                                           &tmp_width, &tmp_height);
5648
5649       if (!is_separator)
5650         {
5651           tmp_height += vertical_separator;
5652           height = MAX (height, tmp_height);
5653           height = MAX (height, tree_view->priv->expander_size);
5654         }
5655       else
5656         {
5657           if (wide_separators)
5658             height = separator_height + 2 * focus_pad;
5659           else
5660             height = 2 + 2 * focus_pad;
5661         }
5662
5663       if (gtk_tree_view_is_expander_column (tree_view, column))
5664         {
5665           tmp_width = tmp_width + horizontal_separator + (depth - 1) * tree_view->priv->level_indentation;
5666
5667           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
5668             tmp_width += depth * tree_view->priv->expander_size;
5669         }
5670       else
5671         tmp_width = tmp_width + horizontal_separator;
5672
5673       if (draw_vgrid_lines)
5674         {
5675           if (list->data == first_column || list->data == last_column)
5676             tmp_width += grid_line_width / 2.0;
5677           else
5678             tmp_width += grid_line_width;
5679         }
5680
5681       if (tmp_width > column->requested_width)
5682         {
5683           retval = TRUE;
5684           column->requested_width = tmp_width;
5685         }
5686     }
5687
5688   if (draw_hgrid_lines)
5689     height += grid_line_width;
5690
5691   if (height != GTK_RBNODE_GET_HEIGHT (node))
5692     {
5693       retval = TRUE;
5694       _gtk_rbtree_node_set_height (tree, node, height);
5695     }
5696   _gtk_rbtree_node_mark_valid (tree, node);
5697   tree_view->priv->post_validation_flag = TRUE;
5698
5699   return retval;
5700 }
5701
5702
5703 static void
5704 validate_visible_area (GtkTreeView *tree_view)
5705 {
5706   GtkTreePath *path = NULL;
5707   GtkTreePath *above_path = NULL;
5708   GtkTreeIter iter;
5709   GtkRBTree *tree = NULL;
5710   GtkRBNode *node = NULL;
5711   gboolean need_redraw = FALSE;
5712   gboolean size_changed = FALSE;
5713   gint total_height;
5714   gint area_above = 0;
5715   gint area_below = 0;
5716
5717   if (tree_view->priv->tree == NULL)
5718     return;
5719
5720   if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID) &&
5721       tree_view->priv->scroll_to_path == NULL)
5722     return;
5723
5724   total_height = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
5725
5726   if (total_height == 0)
5727     return;
5728
5729   /* First, we check to see if we need to scroll anywhere
5730    */
5731   if (tree_view->priv->scroll_to_path)
5732     {
5733       path = gtk_tree_row_reference_get_path (tree_view->priv->scroll_to_path);
5734       if (path && !_gtk_tree_view_find_node (tree_view, path, &tree, &node))
5735         {
5736           /* we are going to scroll, and will update dy */
5737           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5738           if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5739               GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5740             {
5741               _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5742               if (validate_row (tree_view, tree, node, &iter, path))
5743                 size_changed = TRUE;
5744             }
5745
5746           if (tree_view->priv->scroll_to_use_align)
5747             {
5748               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5749               area_above = (total_height - height) *
5750                 tree_view->priv->scroll_to_row_align;
5751               area_below = total_height - area_above - height;
5752               area_above = MAX (area_above, 0);
5753               area_below = MAX (area_below, 0);
5754             }
5755           else
5756             {
5757               /* two cases:
5758                * 1) row not visible
5759                * 2) row visible
5760                */
5761               gint dy;
5762               gint height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5763
5764               dy = _gtk_rbtree_node_find_offset (tree, node);
5765
5766               if (dy >= tree_view->priv->vadjustment->value &&
5767                   dy + height <= (tree_view->priv->vadjustment->value
5768                                   + tree_view->priv->vadjustment->page_size))
5769                 {
5770                   /* row visible: keep the row at the same position */
5771                   area_above = dy - tree_view->priv->vadjustment->value;
5772                   area_below = (tree_view->priv->vadjustment->value +
5773                                 tree_view->priv->vadjustment->page_size)
5774                                - dy - height;
5775                 }
5776               else
5777                 {
5778                   /* row not visible */
5779                   if (dy >= 0
5780                       && dy + height <= tree_view->priv->vadjustment->page_size)
5781                     {
5782                       /* row at the beginning -- fixed */
5783                       area_above = dy;
5784                       area_below = tree_view->priv->vadjustment->page_size
5785                                    - area_above - height;
5786                     }
5787                   else if (dy >= (tree_view->priv->vadjustment->upper -
5788                                   tree_view->priv->vadjustment->page_size))
5789                     {
5790                       /* row at the end -- fixed */
5791                       area_above = dy - (tree_view->priv->vadjustment->upper -
5792                                    tree_view->priv->vadjustment->page_size);
5793                       area_below = tree_view->priv->vadjustment->page_size -
5794                                    area_above - height;
5795
5796                       if (area_below < 0)
5797                         {
5798                           area_above = tree_view->priv->vadjustment->page_size - height;
5799                           area_below = 0;
5800                         }
5801                     }
5802                   else
5803                     {
5804                       /* row somewhere in the middle, bring it to the top
5805                        * of the view
5806                        */
5807                       area_above = 0;
5808                       area_below = total_height - height;
5809                     }
5810                 }
5811             }
5812         }
5813       else
5814         /* the scroll to isn't valid; ignore it.
5815          */
5816         {
5817           if (tree_view->priv->scroll_to_path && !path)
5818             {
5819               gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
5820               tree_view->priv->scroll_to_path = NULL;
5821             }
5822           if (path)
5823             gtk_tree_path_free (path);
5824           path = NULL;
5825         }
5826     }
5827
5828   /* We didn't have a scroll_to set, so we just handle things normally
5829    */
5830   if (path == NULL)
5831     {
5832       gint offset;
5833
5834       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
5835                                         TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
5836                                         &tree, &node);
5837       if (node == NULL)
5838         {
5839           /* In this case, nothing has been validated */
5840           path = gtk_tree_path_new_first ();
5841           _gtk_tree_view_find_node (tree_view, path, &tree, &node);
5842         }
5843       else
5844         {
5845           path = _gtk_tree_view_find_path (tree_view, tree, node);
5846           total_height += offset;
5847         }
5848
5849       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
5850
5851       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5852           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5853         {
5854           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5855           if (validate_row (tree_view, tree, node, &iter, path))
5856             size_changed = TRUE;
5857         }
5858       area_above = 0;
5859       area_below = total_height - ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5860     }
5861
5862   above_path = gtk_tree_path_copy (path);
5863
5864   /* if we do not validate any row above the new top_row, we will make sure
5865    * that the row immediately above top_row has been validated. (if we do not
5866    * do this, _gtk_rbtree_find_offset will find the row above top_row, because
5867    * when invalidated that row's height will be zero. and this will mess up
5868    * scrolling).
5869    */
5870   if (area_above == 0)
5871     {
5872       GtkRBTree *tmptree;
5873       GtkRBNode *tmpnode;
5874
5875       _gtk_tree_view_find_node (tree_view, above_path, &tmptree, &tmpnode);
5876       _gtk_rbtree_prev_full (tmptree, tmpnode, &tmptree, &tmpnode);
5877
5878       if (tmpnode)
5879         {
5880           GtkTreePath *tmppath;
5881           GtkTreeIter tmpiter;
5882
5883           tmppath = _gtk_tree_view_find_path (tree_view, tmptree, tmpnode);
5884           gtk_tree_model_get_iter (tree_view->priv->model, &tmpiter, tmppath);
5885
5886           if (GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_INVALID) ||
5887               GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_COLUMN_INVALID))
5888             {
5889               _gtk_tree_view_queue_draw_node (tree_view, tmptree, tmpnode, NULL);
5890               if (validate_row (tree_view, tmptree, tmpnode, &tmpiter, tmppath))
5891                 size_changed = TRUE;
5892             }
5893
5894           gtk_tree_path_free (tmppath);
5895         }
5896     }
5897
5898   /* Now, we walk forwards and backwards, measuring rows. Unfortunately,
5899    * backwards is much slower then forward, as there is no iter_prev function.
5900    * We go forwards first in case we run out of tree.  Then we go backwards to
5901    * fill out the top.
5902    */
5903   while (node && area_below > 0)
5904     {
5905       if (node->children)
5906         {
5907           GtkTreeIter parent = iter;
5908           gboolean has_child;
5909
5910           tree = node->children;
5911           node = tree->root;
5912
5913           g_assert (node != tree->nil);
5914
5915           while (node->left != tree->nil)
5916             node = node->left;
5917           has_child = gtk_tree_model_iter_children (tree_view->priv->model,
5918                                                     &iter,
5919                                                     &parent);
5920           TREE_VIEW_INTERNAL_ASSERT_VOID (has_child);
5921           gtk_tree_path_down (path);
5922         }
5923       else
5924         {
5925           gboolean done = FALSE;
5926           do
5927             {
5928               node = _gtk_rbtree_next (tree, node);
5929               if (node != NULL)
5930                 {
5931                   gboolean has_next = gtk_tree_model_iter_next (tree_view->priv->model, &iter);
5932                   done = TRUE;
5933                   gtk_tree_path_next (path);
5934
5935                   /* Sanity Check! */
5936                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_next);
5937                 }
5938               else
5939                 {
5940                   GtkTreeIter parent_iter = iter;
5941                   gboolean has_parent;
5942
5943                   node = tree->parent_node;
5944                   tree = tree->parent_tree;
5945                   if (tree == NULL)
5946                     break;
5947                   has_parent = gtk_tree_model_iter_parent (tree_view->priv->model,
5948                                                            &iter,
5949                                                            &parent_iter);
5950                   gtk_tree_path_up (path);
5951
5952                   /* Sanity check */
5953                   TREE_VIEW_INTERNAL_ASSERT_VOID (has_parent);
5954                 }
5955             }
5956           while (!done);
5957         }
5958
5959       if (!node)
5960         break;
5961
5962       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5963           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5964         {
5965           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5966           if (validate_row (tree_view, tree, node, &iter, path))
5967               size_changed = TRUE;
5968         }
5969
5970       area_below -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
5971     }
5972   gtk_tree_path_free (path);
5973
5974   /* If we ran out of tree, and have extra area_below left, we need to add it
5975    * to area_above */
5976   if (area_below > 0)
5977     area_above += area_below;
5978
5979   _gtk_tree_view_find_node (tree_view, above_path, &tree, &node);
5980
5981   /* We walk backwards */
5982   while (area_above > 0)
5983     {
5984       _gtk_rbtree_prev_full (tree, node, &tree, &node);
5985       if (! gtk_tree_path_prev (above_path) && node != NULL)
5986         {
5987           gtk_tree_path_free (above_path);
5988           above_path = _gtk_tree_view_find_path (tree_view, tree, node);
5989         }
5990       gtk_tree_model_get_iter (tree_view->priv->model, &iter, above_path);
5991
5992       if (node == NULL)
5993         break;
5994
5995       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
5996           GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
5997         {
5998           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
5999           if (validate_row (tree_view, tree, node, &iter, above_path))
6000             size_changed = TRUE;
6001         }
6002       area_above -= ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6003     }
6004
6005   /* if we scrolled to a path, we need to set the dy here,
6006    * and sync the top row accordingly
6007    */
6008   if (tree_view->priv->scroll_to_path)
6009     {
6010       gtk_tree_view_set_top_row (tree_view, above_path, -area_above);
6011       gtk_tree_view_top_row_to_dy (tree_view);
6012
6013       need_redraw = TRUE;
6014     }
6015   else if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6016     {
6017       /* when we are not scrolling, we should never set dy to something
6018        * else than zero. we update top_row to be in sync with dy = 0.
6019        */
6020       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6021       gtk_tree_view_dy_to_top_row (tree_view);
6022     }
6023   else if (tree_view->priv->vadjustment->value + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6024     {
6025       gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), tree_view->priv->height - tree_view->priv->vadjustment->page_size);
6026       gtk_tree_view_dy_to_top_row (tree_view);
6027     }
6028   else
6029     gtk_tree_view_top_row_to_dy (tree_view);
6030
6031   /* update width/height and queue a resize */
6032   if (size_changed)
6033     {
6034       GtkRequisition requisition;
6035
6036       /* We temporarily guess a size, under the assumption that it will be the
6037        * same when we get our next size_allocate.  If we don't do this, we'll be
6038        * in an inconsistent state if we call top_row_to_dy. */
6039
6040       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6041       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6042       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6043       gtk_adjustment_changed (tree_view->priv->hadjustment);
6044       gtk_adjustment_changed (tree_view->priv->vadjustment);
6045       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6046     }
6047
6048   if (tree_view->priv->scroll_to_path)
6049     {
6050       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
6051       tree_view->priv->scroll_to_path = NULL;
6052     }
6053
6054   if (above_path)
6055     gtk_tree_path_free (above_path);
6056
6057   if (tree_view->priv->scroll_to_column)
6058     {
6059       tree_view->priv->scroll_to_column = NULL;
6060     }
6061   if (need_redraw)
6062     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
6063 }
6064
6065 static void
6066 initialize_fixed_height_mode (GtkTreeView *tree_view)
6067 {
6068   if (!tree_view->priv->tree)
6069     return;
6070
6071   if (tree_view->priv->fixed_height < 0)
6072     {
6073       GtkTreeIter iter;
6074       GtkTreePath *path;
6075
6076       GtkRBTree *tree = NULL;
6077       GtkRBNode *node = NULL;
6078
6079       tree = tree_view->priv->tree;
6080       node = tree->root;
6081
6082       path = _gtk_tree_view_find_path (tree_view, tree, node);
6083       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6084
6085       validate_row (tree_view, tree, node, &iter, path);
6086
6087       gtk_tree_path_free (path);
6088
6089       tree_view->priv->fixed_height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6090     }
6091
6092    _gtk_rbtree_set_fixed_height (tree_view->priv->tree,
6093                                  tree_view->priv->fixed_height, TRUE);
6094 }
6095
6096 /* Our strategy for finding nodes to validate is a little convoluted.  We find
6097  * the left-most uninvalidated node.  We then try walking right, validating
6098  * nodes.  Once we find a valid node, we repeat the previous process of finding
6099  * the first invalid node.
6100  */
6101
6102 static gboolean
6103 do_validate_rows (GtkTreeView *tree_view, gboolean queue_resize)
6104 {
6105   GtkRBTree *tree = NULL;
6106   GtkRBNode *node = NULL;
6107   gboolean validated_area = FALSE;
6108   gint retval = TRUE;
6109   GtkTreePath *path = NULL;
6110   GtkTreeIter iter;
6111   GTimer *timer;
6112   gint i = 0;
6113
6114   gint prev_height = -1;
6115   gboolean fixed_height = TRUE;
6116
6117   g_assert (tree_view);
6118
6119   if (tree_view->priv->tree == NULL)
6120       return FALSE;
6121
6122   if (tree_view->priv->fixed_height_mode)
6123     {
6124       if (tree_view->priv->fixed_height < 0)
6125         initialize_fixed_height_mode (tree_view);
6126
6127       return FALSE;
6128     }
6129
6130   timer = g_timer_new ();
6131   g_timer_start (timer);
6132
6133   do
6134     {
6135       if (! GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
6136         {
6137           retval = FALSE;
6138           goto done;
6139         }
6140
6141       if (path != NULL)
6142         {
6143           node = _gtk_rbtree_next (tree, node);
6144           if (node != NULL)
6145             {
6146               TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_next (tree_view->priv->model, &iter), FALSE);
6147               gtk_tree_path_next (path);
6148             }
6149           else
6150             {
6151               gtk_tree_path_free (path);
6152               path = NULL;
6153             }
6154         }
6155
6156       if (path == NULL)
6157         {
6158           tree = tree_view->priv->tree;
6159           node = tree_view->priv->tree->root;
6160
6161           g_assert (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_DESCENDANTS_INVALID));
6162
6163           do
6164             {
6165               if (node->left != tree->nil &&
6166                   GTK_RBNODE_FLAG_SET (node->left, GTK_RBNODE_DESCENDANTS_INVALID))
6167                 {
6168                   node = node->left;
6169                 }
6170               else if (node->right != tree->nil &&
6171                        GTK_RBNODE_FLAG_SET (node->right, GTK_RBNODE_DESCENDANTS_INVALID))
6172                 {
6173                   node = node->right;
6174                 }
6175               else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID) ||
6176                        GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_COLUMN_INVALID))
6177                 {
6178                   break;
6179                 }
6180               else if (node->children != NULL)
6181                 {
6182                   tree = node->children;
6183                   node = tree->root;
6184                 }
6185               else
6186                 /* RBTree corruption!  All bad */
6187                 g_assert_not_reached ();
6188             }
6189           while (TRUE);
6190           path = _gtk_tree_view_find_path (tree_view, tree, node);
6191           gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
6192         }
6193
6194       validated_area = validate_row (tree_view, tree, node, &iter, path) ||
6195                        validated_area;
6196
6197       if (!tree_view->priv->fixed_height_check)
6198         {
6199           gint height;
6200
6201           height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
6202           if (prev_height < 0)
6203             prev_height = height;
6204           else if (prev_height != height)
6205             fixed_height = FALSE;
6206         }
6207
6208       i++;
6209     }
6210   while (g_timer_elapsed (timer, NULL) < GTK_TREE_VIEW_TIME_MS_PER_IDLE / 1000.);
6211
6212   if (!tree_view->priv->fixed_height_check)
6213    {
6214      if (fixed_height)
6215        _gtk_rbtree_set_fixed_height (tree_view->priv->tree, prev_height, FALSE);
6216
6217      tree_view->priv->fixed_height_check = 1;
6218    }
6219
6220  done:
6221   if (validated_area)
6222     {
6223       GtkRequisition requisition;
6224       /* We temporarily guess a size, under the assumption that it will be the
6225        * same when we get our next size_allocate.  If we don't do this, we'll be
6226        * in an inconsistent state when we call top_row_to_dy. */
6227
6228       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6229       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6230       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6231       gtk_adjustment_changed (tree_view->priv->hadjustment);
6232       gtk_adjustment_changed (tree_view->priv->vadjustment);
6233
6234       if (queue_resize)
6235         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
6236     }
6237
6238   if (path) gtk_tree_path_free (path);
6239   g_timer_destroy (timer);
6240
6241   return retval;
6242 }
6243
6244 static gboolean
6245 validate_rows (GtkTreeView *tree_view)
6246 {
6247   gboolean retval;
6248
6249   retval = do_validate_rows (tree_view, TRUE);
6250
6251   if (! retval && tree_view->priv->validate_rows_timer)
6252     {
6253       g_source_remove (tree_view->priv->validate_rows_timer);
6254       tree_view->priv->validate_rows_timer = 0;
6255     }
6256
6257   return retval;
6258 }
6259
6260 static gboolean
6261 validate_rows_handler (GtkTreeView *tree_view)
6262 {
6263   gboolean retval;
6264
6265   retval = do_validate_rows (tree_view, TRUE);
6266   if (! retval && tree_view->priv->validate_rows_timer)
6267     {
6268       g_source_remove (tree_view->priv->validate_rows_timer);
6269       tree_view->priv->validate_rows_timer = 0;
6270     }
6271
6272   return retval;
6273 }
6274
6275 static gboolean
6276 do_presize_handler (GtkTreeView *tree_view)
6277 {
6278   if (tree_view->priv->mark_rows_col_dirty)
6279     {
6280       if (tree_view->priv->tree)
6281         _gtk_rbtree_column_invalid (tree_view->priv->tree);
6282       tree_view->priv->mark_rows_col_dirty = FALSE;
6283     }
6284   validate_visible_area (tree_view);
6285   tree_view->priv->presize_handler_timer = 0;
6286
6287   if (tree_view->priv->fixed_height_mode)
6288     {
6289       GtkRequisition requisition;
6290
6291       gtk_widget_size_request (GTK_WIDGET (tree_view), &requisition);
6292
6293       tree_view->priv->hadjustment->upper = MAX (tree_view->priv->hadjustment->upper, (gfloat)requisition.width);
6294       tree_view->priv->vadjustment->upper = MAX (tree_view->priv->vadjustment->upper, (gfloat)requisition.height);
6295       gtk_adjustment_changed (tree_view->priv->hadjustment);
6296       gtk_adjustment_changed (tree_view->priv->vadjustment);
6297       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6298     }
6299
6300   return FALSE;
6301 }
6302
6303 static gboolean
6304 presize_handler_callback (gpointer data)
6305 {
6306   do_presize_handler (GTK_TREE_VIEW (data));
6307
6308   return FALSE;
6309 }
6310
6311 static void
6312 install_presize_handler (GtkTreeView *tree_view)
6313 {
6314   if (! GTK_WIDGET_REALIZED (tree_view))
6315     return;
6316
6317   if (! tree_view->priv->presize_handler_timer)
6318     {
6319       tree_view->priv->presize_handler_timer =
6320         gdk_threads_add_idle_full (GTK_PRIORITY_RESIZE - 2, presize_handler_callback, tree_view, NULL);
6321     }
6322   if (! tree_view->priv->validate_rows_timer)
6323     {
6324       tree_view->priv->validate_rows_timer =
6325         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_VALIDATE, (GSourceFunc) validate_rows_handler, tree_view, NULL);
6326     }
6327 }
6328
6329 static gboolean
6330 scroll_sync_handler (GtkTreeView *tree_view)
6331 {
6332   if (tree_view->priv->height <= tree_view->priv->vadjustment->page_size)
6333     gtk_adjustment_set_value (GTK_ADJUSTMENT (tree_view->priv->vadjustment), 0);
6334   else if (gtk_tree_row_reference_valid (tree_view->priv->top_row))
6335     gtk_tree_view_top_row_to_dy (tree_view);
6336   else
6337     gtk_tree_view_dy_to_top_row (tree_view);
6338
6339   tree_view->priv->scroll_sync_timer = 0;
6340
6341   return FALSE;
6342 }
6343
6344 static void
6345 install_scroll_sync_handler (GtkTreeView *tree_view)
6346 {
6347   if (! GTK_WIDGET_REALIZED (tree_view))
6348     return;
6349
6350   if (!tree_view->priv->scroll_sync_timer)
6351     {
6352       tree_view->priv->scroll_sync_timer =
6353         gdk_threads_add_idle_full (GTK_TREE_VIEW_PRIORITY_SCROLL_SYNC, (GSourceFunc) scroll_sync_handler, tree_view, NULL);
6354     }
6355 }
6356
6357 static void
6358 gtk_tree_view_set_top_row (GtkTreeView *tree_view,
6359                            GtkTreePath *path,
6360                            gint         offset)
6361 {
6362   gtk_tree_row_reference_free (tree_view->priv->top_row);
6363
6364   if (!path)
6365     {
6366       tree_view->priv->top_row = NULL;
6367       tree_view->priv->top_row_dy = 0;
6368     }
6369   else
6370     {
6371       tree_view->priv->top_row = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
6372       tree_view->priv->top_row_dy = offset;
6373     }
6374 }
6375
6376 /* Always call this iff dy is in the visible range.  If the tree is empty, then
6377  * it's set to be NULL, and top_row_dy is 0;
6378  */
6379 static void
6380 gtk_tree_view_dy_to_top_row (GtkTreeView *tree_view)
6381 {
6382   gint offset;
6383   GtkTreePath *path;
6384   GtkRBTree *tree;
6385   GtkRBNode *node;
6386
6387   if (tree_view->priv->tree == NULL)
6388     {
6389       gtk_tree_view_set_top_row (tree_view, NULL, 0);
6390     }
6391   else
6392     {
6393       offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
6394                                         tree_view->priv->dy,
6395                                         &tree, &node);
6396
6397       if (tree == NULL)
6398         {
6399           tree_view->priv->top_row = NULL;
6400           tree_view->priv->top_row_dy = 0;
6401         }
6402       else
6403         {
6404           path = _gtk_tree_view_find_path (tree_view, tree, node);
6405           gtk_tree_view_set_top_row (tree_view, path, offset);
6406           gtk_tree_path_free (path);
6407         }
6408     }
6409 }
6410
6411 static void
6412 gtk_tree_view_top_row_to_dy (GtkTreeView *tree_view)
6413 {
6414   GtkTreePath *path;
6415   GtkRBTree *tree;
6416   GtkRBNode *node;
6417   int new_dy;
6418
6419   if (tree_view->priv->top_row)
6420     path = gtk_tree_row_reference_get_path (tree_view->priv->top_row);
6421   else
6422     path = NULL;
6423
6424   if (!path)
6425     tree = NULL;
6426   else
6427     _gtk_tree_view_find_node (tree_view, path, &tree, &node);
6428
6429   if (path)
6430     gtk_tree_path_free (path);
6431
6432   if (tree == NULL)
6433     {
6434       /* keep dy and set new toprow */
6435       gtk_tree_row_reference_free (tree_view->priv->top_row);
6436       tree_view->priv->top_row = NULL;
6437       tree_view->priv->top_row_dy = 0;
6438       /* DO NOT install the idle handler */
6439       gtk_tree_view_dy_to_top_row (tree_view);
6440       return;
6441     }
6442
6443   if (ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node))
6444       < tree_view->priv->top_row_dy)
6445     {
6446       /* new top row -- do NOT install the idle handler */
6447       gtk_tree_view_dy_to_top_row (tree_view);
6448       return;
6449     }
6450
6451   new_dy = _gtk_rbtree_node_find_offset (tree, node);
6452   new_dy += tree_view->priv->top_row_dy;
6453
6454   if (new_dy + tree_view->priv->vadjustment->page_size > tree_view->priv->height)
6455     new_dy = tree_view->priv->height - tree_view->priv->vadjustment->page_size;
6456
6457   new_dy = MAX (0, new_dy);
6458
6459   tree_view->priv->in_top_row_to_dy = TRUE;
6460   gtk_adjustment_set_value (tree_view->priv->vadjustment, (gdouble)new_dy);
6461   tree_view->priv->in_top_row_to_dy = FALSE;
6462 }
6463
6464
6465 void
6466 _gtk_tree_view_install_mark_rows_col_dirty (GtkTreeView *tree_view)
6467 {
6468   tree_view->priv->mark_rows_col_dirty = TRUE;
6469
6470   install_presize_handler (tree_view);
6471 }
6472
6473 /*
6474  * This function works synchronously (due to the while (validate_rows...)
6475  * loop).
6476  *
6477  * There was a check for column_type != GTK_TREE_VIEW_COLUMN_AUTOSIZE
6478  * here. You now need to check that yourself.
6479  */
6480 void
6481 _gtk_tree_view_column_autosize (GtkTreeView *tree_view,
6482                                 GtkTreeViewColumn *column)
6483 {
6484   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
6485   g_return_if_fail (GTK_IS_TREE_VIEW_COLUMN (column));
6486
6487   _gtk_tree_view_column_cell_set_dirty (column, FALSE);
6488
6489   do_presize_handler (tree_view);
6490   while (validate_rows (tree_view));
6491
6492   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
6493 }
6494
6495 /* Drag-and-drop */
6496
6497 static void
6498 set_source_row (GdkDragContext *context,
6499                 GtkTreeModel   *model,
6500                 GtkTreePath    *source_row)
6501 {
6502   g_object_set_data_full (G_OBJECT (context),
6503                           I_("gtk-tree-view-source-row"),
6504                           source_row ? gtk_tree_row_reference_new (model, source_row) : NULL,
6505                           (GDestroyNotify) (source_row ? gtk_tree_row_reference_free : NULL));
6506 }
6507
6508 static GtkTreePath*
6509 get_source_row (GdkDragContext *context)
6510 {
6511   GtkTreeRowReference *ref =
6512     g_object_get_data (G_OBJECT (context), "gtk-tree-view-source-row");
6513
6514   if (ref)
6515     return gtk_tree_row_reference_get_path (ref);
6516   else
6517     return NULL;
6518 }
6519
6520 typedef struct
6521 {
6522   GtkTreeRowReference *dest_row;
6523   guint                path_down_mode   : 1;
6524   guint                empty_view_drop  : 1;
6525   guint                drop_append_mode : 1;
6526 }
6527 DestRow;
6528
6529 static void
6530 dest_row_free (gpointer data)
6531 {
6532   DestRow *dr = (DestRow *)data;
6533
6534   gtk_tree_row_reference_free (dr->dest_row);
6535   g_slice_free (DestRow, dr);
6536 }
6537
6538 static void
6539 set_dest_row (GdkDragContext *context,
6540               GtkTreeModel   *model,
6541               GtkTreePath    *dest_row,
6542               gboolean        path_down_mode,
6543               gboolean        empty_view_drop,
6544               gboolean        drop_append_mode)
6545 {
6546   DestRow *dr;
6547
6548   if (!dest_row)
6549     {
6550       g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6551                               NULL, NULL);
6552       return;
6553     }
6554
6555   dr = g_slice_new (DestRow);
6556
6557   dr->dest_row = gtk_tree_row_reference_new (model, dest_row);
6558   dr->path_down_mode = path_down_mode != FALSE;
6559   dr->empty_view_drop = empty_view_drop != FALSE;
6560   dr->drop_append_mode = drop_append_mode != FALSE;
6561
6562   g_object_set_data_full (G_OBJECT (context), I_("gtk-tree-view-dest-row"),
6563                           dr, (GDestroyNotify) dest_row_free);
6564 }
6565
6566 static GtkTreePath*
6567 get_dest_row (GdkDragContext *context,
6568               gboolean       *path_down_mode)
6569 {
6570   DestRow *dr =
6571     g_object_get_data (G_OBJECT (context), "gtk-tree-view-dest-row");
6572
6573   if (dr)
6574     {
6575       GtkTreePath *path = NULL;
6576
6577       if (path_down_mode)
6578         *path_down_mode = dr->path_down_mode;
6579
6580       if (dr->dest_row)
6581         path = gtk_tree_row_reference_get_path (dr->dest_row);
6582       else if (dr->empty_view_drop)
6583         path = gtk_tree_path_new_from_indices (0, -1);
6584       else
6585         path = NULL;
6586
6587       if (path && dr->drop_append_mode)
6588         gtk_tree_path_next (path);
6589
6590       return path;
6591     }
6592   else
6593     return NULL;
6594 }
6595
6596 /* Get/set whether drag_motion requested the drag data and
6597  * drag_data_received should thus not actually insert the data,
6598  * since the data doesn't result from a drop.
6599  */
6600 static void
6601 set_status_pending (GdkDragContext *context,
6602                     GdkDragAction   suggested_action)
6603 {
6604   g_object_set_data (G_OBJECT (context),
6605                      I_("gtk-tree-view-status-pending"),
6606                      GINT_TO_POINTER (suggested_action));
6607 }
6608
6609 static GdkDragAction
6610 get_status_pending (GdkDragContext *context)
6611 {
6612   return GPOINTER_TO_INT (g_object_get_data (G_OBJECT (context),
6613                                              "gtk-tree-view-status-pending"));
6614 }
6615
6616 static TreeViewDragInfo*
6617 get_info (GtkTreeView *tree_view)
6618 {
6619   return g_object_get_data (G_OBJECT (tree_view), "gtk-tree-view-drag-info");
6620 }
6621
6622 static void
6623 destroy_info (TreeViewDragInfo *di)
6624 {
6625   g_slice_free (TreeViewDragInfo, di);
6626 }
6627
6628 static TreeViewDragInfo*
6629 ensure_info (GtkTreeView *tree_view)
6630 {
6631   TreeViewDragInfo *di;
6632
6633   di = get_info (tree_view);
6634
6635   if (di == NULL)
6636     {
6637       di = g_slice_new0 (TreeViewDragInfo);
6638
6639       g_object_set_data_full (G_OBJECT (tree_view),
6640                               I_("gtk-tree-view-drag-info"),
6641                               di,
6642                               (GDestroyNotify) destroy_info);
6643     }
6644
6645   return di;
6646 }
6647
6648 static void
6649 remove_info (GtkTreeView *tree_view)
6650 {
6651   g_object_set_data (G_OBJECT (tree_view), I_("gtk-tree-view-drag-info"), NULL);
6652 }
6653
6654 #if 0
6655 static gint
6656 drag_scan_timeout (gpointer data)
6657 {
6658   GtkTreeView *tree_view;
6659   gint x, y;
6660   GdkModifierType state;
6661   GtkTreePath *path = NULL;
6662   GtkTreeViewColumn *column = NULL;
6663   GdkRectangle visible_rect;
6664
6665   GDK_THREADS_ENTER ();
6666
6667   tree_view = GTK_TREE_VIEW (data);
6668
6669   gdk_window_get_pointer (tree_view->priv->bin_window,
6670                           &x, &y, &state);
6671
6672   gtk_tree_view_get_visible_rect (tree_view, &visible_rect);
6673
6674   /* See if we are near the edge. */
6675   if ((x - visible_rect.x) < SCROLL_EDGE_SIZE ||
6676       (visible_rect.x + visible_rect.width - x) < SCROLL_EDGE_SIZE ||
6677       (y - visible_rect.y) < SCROLL_EDGE_SIZE ||
6678       (visible_rect.y + visible_rect.height - y) < SCROLL_EDGE_SIZE)
6679     {
6680       gtk_tree_view_get_path_at_pos (tree_view,
6681                                      tree_view->priv->bin_window,
6682                                      x, y,
6683                                      &path,
6684                                      &column,
6685                                      NULL,
6686                                      NULL);
6687
6688       if (path != NULL)
6689         {
6690           gtk_tree_view_scroll_to_cell (tree_view,
6691                                         path,
6692                                         column,
6693                                         TRUE,
6694                                         0.5, 0.5);
6695
6696           gtk_tree_path_free (path);
6697         }
6698     }
6699
6700   GDK_THREADS_LEAVE ();
6701
6702   return TRUE;
6703 }
6704 #endif /* 0 */
6705
6706 static void
6707 add_scroll_timeout (GtkTreeView *tree_view)
6708 {
6709   if (tree_view->priv->scroll_timeout == 0)
6710     {
6711       tree_view->priv->scroll_timeout =
6712         gdk_threads_add_timeout (150, scroll_row_timeout, tree_view);
6713     }
6714 }
6715
6716 static void
6717 remove_scroll_timeout (GtkTreeView *tree_view)
6718 {
6719   if (tree_view->priv->scroll_timeout != 0)
6720     {
6721       g_source_remove (tree_view->priv->scroll_timeout);
6722       tree_view->priv->scroll_timeout = 0;
6723     }
6724 }
6725
6726 static gboolean
6727 check_model_dnd (GtkTreeModel *model,
6728                  GType         required_iface,
6729                  const gchar  *signal)
6730 {
6731   if (model == NULL || !G_TYPE_CHECK_INSTANCE_TYPE ((model), required_iface))
6732     {
6733       g_warning ("You must override the default '%s' handler "
6734                  "on GtkTreeView when using models that don't support "
6735                  "the %s interface and enabling drag-and-drop. The simplest way to do this "
6736                  "is to connect to '%s' and call "
6737                  "g_signal_stop_emission_by_name() in your signal handler to prevent "
6738                  "the default handler from running. Look at the source code "
6739                  "for the default handler in gtktreeview.c to get an idea what "
6740                  "your handler should do. (gtktreeview.c is in the GTK source "
6741                  "code.) If you're using GTK from a language other than C, "
6742                  "there may be a more natural way to override default handlers, e.g. via derivation.",
6743                  signal, g_type_name (required_iface), signal);
6744       return FALSE;
6745     }
6746   else
6747     return TRUE;
6748 }
6749
6750 static void
6751 remove_open_timeout (GtkTreeView *tree_view)
6752 {
6753   if (tree_view->priv->open_dest_timeout != 0)
6754     {
6755       g_source_remove (tree_view->priv->open_dest_timeout);
6756       tree_view->priv->open_dest_timeout = 0;
6757     }
6758 }
6759
6760
6761 static gint
6762 open_row_timeout (gpointer data)
6763 {
6764   GtkTreeView *tree_view = data;
6765   GtkTreePath *dest_path = NULL;
6766   GtkTreeViewDropPosition pos;
6767   gboolean result = FALSE;
6768
6769   gtk_tree_view_get_drag_dest_row (tree_view,
6770                                    &dest_path,
6771                                    &pos);
6772
6773   if (dest_path &&
6774       (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6775        pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
6776     {
6777       gtk_tree_view_expand_row (tree_view, dest_path, FALSE);
6778       tree_view->priv->open_dest_timeout = 0;
6779
6780       gtk_tree_path_free (dest_path);
6781     }
6782   else
6783     {
6784       if (dest_path)
6785         gtk_tree_path_free (dest_path);
6786
6787       result = TRUE;
6788     }
6789
6790   return result;
6791 }
6792
6793 static gboolean
6794 scroll_row_timeout (gpointer data)
6795 {
6796   GtkTreeView *tree_view = data;
6797
6798   gtk_tree_view_vertical_autoscroll (tree_view);
6799
6800   if (tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
6801     gtk_tree_view_update_rubber_band (tree_view);
6802
6803   return TRUE;
6804 }
6805
6806 /* Returns TRUE if event should not be propagated to parent widgets */
6807 static gboolean
6808 set_destination_row (GtkTreeView    *tree_view,
6809                      GdkDragContext *context,
6810                      /* coordinates relative to the widget */
6811                      gint            x,
6812                      gint            y,
6813                      GdkDragAction  *suggested_action,
6814                      GdkAtom        *target)
6815 {
6816   GtkTreePath *path = NULL;
6817   GtkTreeViewDropPosition pos;
6818   GtkTreeViewDropPosition old_pos;
6819   TreeViewDragInfo *di;
6820   GtkWidget *widget;
6821   GtkTreePath *old_dest_path = NULL;
6822   gboolean can_drop = FALSE;
6823
6824   *suggested_action = 0;
6825   *target = GDK_NONE;
6826
6827   widget = GTK_WIDGET (tree_view);
6828
6829   di = get_info (tree_view);
6830
6831   if (di == NULL || y - TREE_VIEW_HEADER_HEIGHT (tree_view) < 0)
6832     {
6833       /* someone unset us as a drag dest, note that if
6834        * we return FALSE drag_leave isn't called
6835        */
6836
6837       gtk_tree_view_set_drag_dest_row (tree_view,
6838                                        NULL,
6839                                        GTK_TREE_VIEW_DROP_BEFORE);
6840
6841       remove_scroll_timeout (GTK_TREE_VIEW (widget));
6842       remove_open_timeout (GTK_TREE_VIEW (widget));
6843
6844       return FALSE; /* no longer a drop site */
6845     }
6846
6847   *target = gtk_drag_dest_find_target (widget, context,
6848                                        gtk_drag_dest_get_target_list (widget));
6849   if (*target == GDK_NONE)
6850     {
6851       return FALSE;
6852     }
6853
6854   if (!gtk_tree_view_get_dest_row_at_pos (tree_view,
6855                                           x, y,
6856                                           &path,
6857                                           &pos))
6858     {
6859       gint n_children;
6860       GtkTreeModel *model;
6861
6862       remove_open_timeout (tree_view);
6863
6864       /* the row got dropped on empty space, let's setup a special case
6865        */
6866
6867       if (path)
6868         gtk_tree_path_free (path);
6869
6870       model = gtk_tree_view_get_model (tree_view);
6871
6872       n_children = gtk_tree_model_iter_n_children (model, NULL);
6873       if (n_children)
6874         {
6875           pos = GTK_TREE_VIEW_DROP_AFTER;
6876           path = gtk_tree_path_new_from_indices (n_children - 1, -1);
6877         }
6878       else
6879         {
6880           pos = GTK_TREE_VIEW_DROP_BEFORE;
6881           path = gtk_tree_path_new_from_indices (0, -1);
6882         }
6883
6884       can_drop = TRUE;
6885
6886       goto out;
6887     }
6888
6889   g_assert (path);
6890
6891   /* If we left the current row's "open" zone, unset the timeout for
6892    * opening the row
6893    */
6894   gtk_tree_view_get_drag_dest_row (tree_view,
6895                                    &old_dest_path,
6896                                    &old_pos);
6897
6898   if (old_dest_path &&
6899       (gtk_tree_path_compare (path, old_dest_path) != 0 ||
6900        !(pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
6901          pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE)))
6902     remove_open_timeout (tree_view);
6903
6904   if (old_dest_path)
6905     gtk_tree_path_free (old_dest_path);
6906
6907   if (TRUE /* FIXME if the location droppable predicate */)
6908     {
6909       can_drop = TRUE;
6910     }
6911
6912 out:
6913   if (can_drop)
6914     {
6915       GtkWidget *source_widget;
6916
6917       *suggested_action = context->suggested_action;
6918       source_widget = gtk_drag_get_source_widget (context);
6919
6920       if (source_widget == widget)
6921         {
6922           /* Default to MOVE, unless the user has
6923            * pressed ctrl or shift to affect available actions
6924            */
6925           if ((context->actions & GDK_ACTION_MOVE) != 0)
6926             *suggested_action = GDK_ACTION_MOVE;
6927         }
6928
6929       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
6930                                        path, pos);
6931     }
6932   else
6933     {
6934       /* can't drop here */
6935       remove_open_timeout (tree_view);
6936
6937       gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
6938                                        NULL,
6939                                        GTK_TREE_VIEW_DROP_BEFORE);
6940     }
6941
6942   if (path)
6943     gtk_tree_path_free (path);
6944
6945   return TRUE;
6946 }
6947
6948 static GtkTreePath*
6949 get_logical_dest_row (GtkTreeView *tree_view,
6950                       gboolean    *path_down_mode,
6951                       gboolean    *drop_append_mode)
6952 {
6953   /* adjust path to point to the row the drop goes in front of */
6954   GtkTreePath *path = NULL;
6955   GtkTreeViewDropPosition pos;
6956
6957   g_return_val_if_fail (path_down_mode != NULL, NULL);
6958   g_return_val_if_fail (drop_append_mode != NULL, NULL);
6959
6960   *path_down_mode = FALSE;
6961   *drop_append_mode = 0;
6962
6963   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
6964
6965   if (path == NULL)
6966     return NULL;
6967
6968   if (pos == GTK_TREE_VIEW_DROP_BEFORE)
6969     ; /* do nothing */
6970   else if (pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE ||
6971            pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER)
6972     *path_down_mode = TRUE;
6973   else
6974     {
6975       GtkTreeIter iter;
6976       GtkTreeModel *model = gtk_tree_view_get_model (tree_view);
6977
6978       g_assert (pos == GTK_TREE_VIEW_DROP_AFTER);
6979
6980       if (!gtk_tree_model_get_iter (model, &iter, path) ||
6981           !gtk_tree_model_iter_next (model, &iter))
6982         *drop_append_mode = 1;
6983       else
6984         {
6985           *drop_append_mode = 0;
6986           gtk_tree_path_next (path);
6987         }
6988     }
6989
6990   return path;
6991 }
6992
6993 static gboolean
6994 gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
6995                                         GdkEventMotion   *event)
6996 {
6997   GtkWidget *widget = GTK_WIDGET (tree_view);
6998   GdkDragContext *context;
6999   TreeViewDragInfo *di;
7000   GtkTreePath *path = NULL;
7001   gint button;
7002   gint cell_x, cell_y;
7003   GtkTreeModel *model;
7004   gboolean retval = FALSE;
7005
7006   di = get_info (tree_view);
7007
7008   if (di == NULL || !di->source_set)
7009     goto out;
7010
7011   if (tree_view->priv->pressed_button < 0)
7012     goto out;
7013
7014   if (!gtk_drag_check_threshold (widget,
7015                                  tree_view->priv->press_start_x,
7016                                  tree_view->priv->press_start_y,
7017                                  event->x, event->y))
7018     goto out;
7019
7020   model = gtk_tree_view_get_model (tree_view);
7021
7022   if (model == NULL)
7023     goto out;
7024
7025   button = tree_view->priv->pressed_button;
7026   tree_view->priv->pressed_button = -1;
7027
7028   gtk_tree_view_get_path_at_pos (tree_view,
7029                                  tree_view->priv->press_start_x,
7030                                  tree_view->priv->press_start_y,
7031                                  &path,
7032                                  NULL,
7033                                  &cell_x,
7034                                  &cell_y);
7035
7036   if (path == NULL)
7037     goto out;
7038
7039   if (!GTK_IS_TREE_DRAG_SOURCE (model) ||
7040       !gtk_tree_drag_source_row_draggable (GTK_TREE_DRAG_SOURCE (model),
7041                                            path))
7042     goto out;
7043
7044   if (!(GDK_BUTTON1_MASK << (button - 1) & di->start_button_mask))
7045     goto out;
7046
7047   /* Now we can begin the drag */
7048
7049   retval = TRUE;
7050
7051   context = gtk_drag_begin (widget,
7052                             gtk_drag_source_get_target_list (widget),
7053                             di->source_actions,
7054                             button,
7055                             (GdkEvent*)event);
7056
7057   set_source_row (context, model, path);
7058
7059  out:
7060   if (path)
7061     gtk_tree_path_free (path);
7062
7063   return retval;
7064 }
7065
7066
7067 static void
7068 gtk_tree_view_drag_begin (GtkWidget      *widget,
7069                           GdkDragContext *context)
7070 {
7071   GtkTreeView *tree_view;
7072   GtkTreePath *path = NULL;
7073   gint cell_x, cell_y;
7074   GdkPixmap *row_pix;
7075   TreeViewDragInfo *di;
7076
7077   tree_view = GTK_TREE_VIEW (widget);
7078
7079   /* if the user uses a custom DND source impl, we don't set the icon here */
7080   di = get_info (tree_view);
7081
7082   if (di == NULL || !di->source_set)
7083     return;
7084
7085   gtk_tree_view_get_path_at_pos (tree_view,
7086                                  tree_view->priv->press_start_x,
7087                                  tree_view->priv->press_start_y,
7088                                  &path,
7089                                  NULL,
7090                                  &cell_x,
7091                                  &cell_y);
7092
7093   g_return_if_fail (path != NULL);
7094
7095   row_pix = gtk_tree_view_create_row_drag_icon (tree_view,
7096                                                 path);
7097
7098   gtk_drag_set_icon_pixmap (context,
7099                             gdk_drawable_get_colormap (row_pix),
7100                             row_pix,
7101                             NULL,
7102                             /* the + 1 is for the black border in the icon */
7103                             tree_view->priv->press_start_x + 1,
7104                             cell_y + 1);
7105
7106   g_object_unref (row_pix);
7107   gtk_tree_path_free (path);
7108 }
7109
7110 static void
7111 gtk_tree_view_drag_end (GtkWidget      *widget,
7112                         GdkDragContext *context)
7113 {
7114   /* do nothing */
7115 }
7116
7117 /* Default signal implementations for the drag signals */
7118 static void
7119 gtk_tree_view_drag_data_get (GtkWidget        *widget,
7120                              GdkDragContext   *context,
7121                              GtkSelectionData *selection_data,
7122                              guint             info,
7123                              guint             time)
7124 {
7125   GtkTreeView *tree_view;
7126   GtkTreeModel *model;
7127   TreeViewDragInfo *di;
7128   GtkTreePath *source_row;
7129
7130   tree_view = GTK_TREE_VIEW (widget);
7131
7132   model = gtk_tree_view_get_model (tree_view);
7133
7134   if (model == NULL)
7135     return;
7136
7137   di = get_info (GTK_TREE_VIEW (widget));
7138
7139   if (di == NULL)
7140     return;
7141
7142   source_row = get_source_row (context);
7143
7144   if (source_row == NULL)
7145     return;
7146
7147   /* We can implement the GTK_TREE_MODEL_ROW target generically for
7148    * any model; for DragSource models there are some other targets
7149    * we also support.
7150    */
7151
7152   if (GTK_IS_TREE_DRAG_SOURCE (model) &&
7153       gtk_tree_drag_source_drag_data_get (GTK_TREE_DRAG_SOURCE (model),
7154                                           source_row,
7155                                           selection_data))
7156     goto done;
7157
7158   /* If drag_data_get does nothing, try providing row data. */
7159   if (selection_data->target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7160     {
7161       gtk_tree_set_row_drag_data (selection_data,
7162                                   model,
7163                                   source_row);
7164     }
7165
7166  done:
7167   gtk_tree_path_free (source_row);
7168 }
7169
7170
7171 static void
7172 gtk_tree_view_drag_data_delete (GtkWidget      *widget,
7173                                 GdkDragContext *context)
7174 {
7175   TreeViewDragInfo *di;
7176   GtkTreeModel *model;
7177   GtkTreeView *tree_view;
7178   GtkTreePath *source_row;
7179
7180   tree_view = GTK_TREE_VIEW (widget);
7181   model = gtk_tree_view_get_model (tree_view);
7182
7183   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_SOURCE, "drag_data_delete"))
7184     return;
7185
7186   di = get_info (tree_view);
7187
7188   if (di == NULL)
7189     return;
7190
7191   source_row = get_source_row (context);
7192
7193   if (source_row == NULL)
7194     return;
7195
7196   gtk_tree_drag_source_drag_data_delete (GTK_TREE_DRAG_SOURCE (model),
7197                                          source_row);
7198
7199   gtk_tree_path_free (source_row);
7200
7201   set_source_row (context, NULL, NULL);
7202 }
7203
7204 static void
7205 gtk_tree_view_drag_leave (GtkWidget      *widget,
7206                           GdkDragContext *context,
7207                           guint             time)
7208 {
7209   /* unset any highlight row */
7210   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7211                                    NULL,
7212                                    GTK_TREE_VIEW_DROP_BEFORE);
7213
7214   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7215   remove_open_timeout (GTK_TREE_VIEW (widget));
7216 }
7217
7218
7219 static gboolean
7220 gtk_tree_view_drag_motion (GtkWidget        *widget,
7221                            GdkDragContext   *context,
7222                            /* coordinates relative to the widget */
7223                            gint              x,
7224                            gint              y,
7225                            guint             time)
7226 {
7227   gboolean empty;
7228   GtkTreePath *path = NULL;
7229   GtkTreeViewDropPosition pos;
7230   GtkTreeView *tree_view;
7231   GdkDragAction suggested_action = 0;
7232   GdkAtom target;
7233
7234   tree_view = GTK_TREE_VIEW (widget);
7235
7236   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7237     return FALSE;
7238
7239   gtk_tree_view_get_drag_dest_row (tree_view, &path, &pos);
7240
7241   /* we only know this *after* set_desination_row */
7242   empty = tree_view->priv->empty_view_drop;
7243
7244   if (path == NULL && !empty)
7245     {
7246       /* Can't drop here. */
7247       gdk_drag_status (context, 0, time);
7248     }
7249   else
7250     {
7251       if (tree_view->priv->open_dest_timeout == 0 &&
7252           (pos == GTK_TREE_VIEW_DROP_INTO_OR_AFTER ||
7253            pos == GTK_TREE_VIEW_DROP_INTO_OR_BEFORE))
7254         {
7255           tree_view->priv->open_dest_timeout =
7256             gdk_threads_add_timeout (AUTO_EXPAND_TIMEOUT, open_row_timeout, tree_view);
7257         }
7258       else
7259         {
7260           add_scroll_timeout (tree_view);
7261         }
7262
7263       if (target == gdk_atom_intern_static_string ("GTK_TREE_MODEL_ROW"))
7264         {
7265           /* Request data so we can use the source row when
7266            * determining whether to accept the drop
7267            */
7268           set_status_pending (context, suggested_action);
7269           gtk_drag_get_data (widget, context, target, time);
7270         }
7271       else
7272         {
7273           set_status_pending (context, 0);
7274           gdk_drag_status (context, suggested_action, time);
7275         }
7276     }
7277
7278   if (path)
7279     gtk_tree_path_free (path);
7280
7281   return TRUE;
7282 }
7283
7284
7285 static gboolean
7286 gtk_tree_view_drag_drop (GtkWidget        *widget,
7287                          GdkDragContext   *context,
7288                          /* coordinates relative to the widget */
7289                          gint              x,
7290                          gint              y,
7291                          guint             time)
7292 {
7293   GtkTreeView *tree_view;
7294   GtkTreePath *path;
7295   GdkDragAction suggested_action = 0;
7296   GdkAtom target = GDK_NONE;
7297   TreeViewDragInfo *di;
7298   GtkTreeModel *model;
7299   gboolean path_down_mode;
7300   gboolean drop_append_mode;
7301
7302   tree_view = GTK_TREE_VIEW (widget);
7303
7304   model = gtk_tree_view_get_model (tree_view);
7305
7306   remove_scroll_timeout (GTK_TREE_VIEW (widget));
7307   remove_open_timeout (GTK_TREE_VIEW (widget));
7308
7309   di = get_info (tree_view);
7310
7311   if (di == NULL)
7312     return FALSE;
7313
7314   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_drop"))
7315     return FALSE;
7316
7317   if (!set_destination_row (tree_view, context, x, y, &suggested_action, &target))
7318     return FALSE;
7319
7320   path = get_logical_dest_row (tree_view, &path_down_mode, &drop_append_mode);
7321
7322   if (target != GDK_NONE && path != NULL)
7323     {
7324       /* in case a motion had requested drag data, change things so we
7325        * treat drag data receives as a drop.
7326        */
7327       set_status_pending (context, 0);
7328       set_dest_row (context, model, path,
7329                     path_down_mode, tree_view->priv->empty_view_drop,
7330                     drop_append_mode);
7331     }
7332
7333   if (path)
7334     gtk_tree_path_free (path);
7335
7336   /* Unset this thing */
7337   gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7338                                    NULL,
7339                                    GTK_TREE_VIEW_DROP_BEFORE);
7340
7341   if (target != GDK_NONE)
7342     {
7343       gtk_drag_get_data (widget, context, target, time);
7344       return TRUE;
7345     }
7346   else
7347     return FALSE;
7348 }
7349
7350 static void
7351 gtk_tree_view_drag_data_received (GtkWidget        *widget,
7352                                   GdkDragContext   *context,
7353                                   /* coordinates relative to the widget */
7354                                   gint              x,
7355                                   gint              y,
7356                                   GtkSelectionData *selection_data,
7357                                   guint             info,
7358                                   guint             time)
7359 {
7360   GtkTreePath *path;
7361   TreeViewDragInfo *di;
7362   gboolean accepted = FALSE;
7363   GtkTreeModel *model;
7364   GtkTreeView *tree_view;
7365   GtkTreePath *dest_row;
7366   GdkDragAction suggested_action;
7367   gboolean path_down_mode;
7368   gboolean drop_append_mode;
7369
7370   tree_view = GTK_TREE_VIEW (widget);
7371
7372   model = gtk_tree_view_get_model (tree_view);
7373
7374   if (!check_model_dnd (model, GTK_TYPE_TREE_DRAG_DEST, "drag_data_received"))
7375     return;
7376
7377   di = get_info (tree_view);
7378
7379   if (di == NULL)
7380     return;
7381
7382   suggested_action = get_status_pending (context);
7383
7384   if (suggested_action)
7385     {
7386       /* We are getting this data due to a request in drag_motion,
7387        * rather than due to a request in drag_drop, so we are just
7388        * supposed to call drag_status, not actually paste in the
7389        * data.
7390        */
7391       path = get_logical_dest_row (tree_view, &path_down_mode,
7392                                    &drop_append_mode);
7393
7394       if (path == NULL)
7395         suggested_action = 0;
7396       else if (path_down_mode)
7397         gtk_tree_path_down (path);
7398
7399       if (suggested_action)
7400         {
7401           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7402                                                      path,
7403                                                      selection_data))
7404             {
7405               if (path_down_mode)
7406                 {
7407                   path_down_mode = FALSE;
7408                   gtk_tree_path_up (path);
7409
7410                   if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7411                                                              path,
7412                                                              selection_data))
7413                     suggested_action = 0;
7414                 }
7415               else
7416                 suggested_action = 0;
7417             }
7418         }
7419
7420       gdk_drag_status (context, suggested_action, time);
7421
7422       if (path)
7423         gtk_tree_path_free (path);
7424
7425       /* If you can't drop, remove user drop indicator until the next motion */
7426       if (suggested_action == 0)
7427         gtk_tree_view_set_drag_dest_row (GTK_TREE_VIEW (widget),
7428                                          NULL,
7429                                          GTK_TREE_VIEW_DROP_BEFORE);
7430
7431       return;
7432     }
7433
7434   dest_row = get_dest_row (context, &path_down_mode);
7435
7436   if (dest_row == NULL)
7437     return;
7438
7439   if (selection_data->length >= 0)
7440     {
7441       if (path_down_mode)
7442         {
7443           gtk_tree_path_down (dest_row);
7444           if (!gtk_tree_drag_dest_row_drop_possible (GTK_TREE_DRAG_DEST (model),
7445                                                      dest_row, selection_data))
7446             gtk_tree_path_up (dest_row);
7447         }
7448     }
7449
7450   if (selection_data->length >= 0)
7451     {
7452       if (gtk_tree_drag_dest_drag_data_received (GTK_TREE_DRAG_DEST (model),
7453                                                  dest_row,
7454                                                  selection_data))
7455         accepted = TRUE;
7456     }
7457
7458   gtk_drag_finish (context,
7459                    accepted,
7460                    (context->action == GDK_ACTION_MOVE),
7461                    time);
7462
7463   if (gtk_tree_path_get_depth (dest_row) == 1
7464       && gtk_tree_path_get_indices (dest_row)[0] == 0)
7465     {
7466       /* special special case drag to "0", scroll to first item */
7467       if (!tree_view->priv->scroll_to_path)
7468         gtk_tree_view_scroll_to_cell (tree_view, dest_row, NULL, FALSE, 0.0, 0.0);
7469     }
7470
7471   gtk_tree_path_free (dest_row);
7472
7473   /* drop dest_row */
7474   set_dest_row (context, NULL, NULL, FALSE, FALSE, FALSE);
7475 }
7476
7477
7478
7479 /* GtkContainer Methods
7480  */
7481
7482
7483 static void
7484 gtk_tree_view_remove (GtkContainer *container,
7485                       GtkWidget    *widget)
7486 {
7487   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7488   GtkTreeViewChild *child = NULL;
7489   GList *tmp_list;
7490
7491   tmp_list = tree_view->priv->children;
7492   while (tmp_list)
7493     {
7494       child = tmp_list->data;
7495       if (child->widget == widget)
7496         {
7497           gtk_widget_unparent (widget);
7498
7499           tree_view->priv->children = g_list_remove_link (tree_view->priv->children, tmp_list);
7500           g_list_free_1 (tmp_list);
7501           g_slice_free (GtkTreeViewChild, child);
7502           return;
7503         }
7504
7505       tmp_list = tmp_list->next;
7506     }
7507
7508   tmp_list = tree_view->priv->columns;
7509
7510   while (tmp_list)
7511     {
7512       GtkTreeViewColumn *column;
7513       column = tmp_list->data;
7514       if (column->button == widget)
7515         {
7516           gtk_widget_unparent (widget);
7517           return;
7518         }
7519       tmp_list = tmp_list->next;
7520     }
7521 }
7522
7523 static void
7524 gtk_tree_view_forall (GtkContainer *container,
7525                       gboolean      include_internals,
7526                       GtkCallback   callback,
7527                       gpointer      callback_data)
7528 {
7529   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7530   GtkTreeViewChild *child = NULL;
7531   GtkTreeViewColumn *column;
7532   GList *tmp_list;
7533
7534   tmp_list = tree_view->priv->children;
7535   while (tmp_list)
7536     {
7537       child = tmp_list->data;
7538       tmp_list = tmp_list->next;
7539
7540       (* callback) (child->widget, callback_data);
7541     }
7542   if (include_internals == FALSE)
7543     return;
7544
7545   for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7546     {
7547       column = tmp_list->data;
7548
7549       if (column->button)
7550         (* callback) (column->button, callback_data);
7551     }
7552 }
7553
7554 /* Returns TRUE if the treeview contains no "special" (editable or activatable)
7555  * cells. If so we draw one big row-spanning focus rectangle.
7556  */
7557 static gboolean
7558 gtk_tree_view_has_special_cell (GtkTreeView *tree_view)
7559 {
7560   GList *list;
7561
7562   for (list = tree_view->priv->columns; list; list = list->next)
7563     {
7564       if (!((GtkTreeViewColumn *)list->data)->visible)
7565         continue;
7566       if (_gtk_tree_view_column_count_special_cells (list->data))
7567         return TRUE;
7568     }
7569
7570   return FALSE;
7571 }
7572
7573 static void
7574 column_sizing_notify (GObject    *object,
7575                       GParamSpec *pspec,
7576                       gpointer    data)
7577 {
7578   GtkTreeViewColumn *c = GTK_TREE_VIEW_COLUMN (object);
7579
7580   if (gtk_tree_view_column_get_sizing (c) != GTK_TREE_VIEW_COLUMN_FIXED)
7581     /* disable fixed height mode */
7582     g_object_set (data, "fixed-height-mode", FALSE, NULL);
7583 }
7584
7585 /**
7586  * gtk_tree_view_set_fixed_height_mode:
7587  * @tree_view: a #GtkTreeView
7588  * @enable: %TRUE to enable fixed height mode
7589  *
7590  * Enables or disables the fixed height mode of @tree_view.
7591  * Fixed height mode speeds up #GtkTreeView by assuming that all
7592  * rows have the same height.
7593  * Only enable this option if all rows are the same height and all
7594  * columns are of type %GTK_TREE_VIEW_COLUMN_FIXED.
7595  *
7596  * Since: 2.6
7597  **/
7598 void
7599 gtk_tree_view_set_fixed_height_mode (GtkTreeView *tree_view,
7600                                      gboolean     enable)
7601 {
7602   GList *l;
7603
7604   enable = enable != FALSE;
7605
7606   if (enable == tree_view->priv->fixed_height_mode)
7607     return;
7608
7609   if (!enable)
7610     {
7611       tree_view->priv->fixed_height_mode = 0;
7612       tree_view->priv->fixed_height = -1;
7613
7614       /* force a revalidation */
7615       install_presize_handler (tree_view);
7616     }
7617   else
7618     {
7619       /* make sure all columns are of type FIXED */
7620       for (l = tree_view->priv->columns; l; l = l->next)
7621         {
7622           GtkTreeViewColumn *c = l->data;
7623
7624           g_return_if_fail (gtk_tree_view_column_get_sizing (c) == GTK_TREE_VIEW_COLUMN_FIXED);
7625         }
7626
7627       /* yes, we really have to do this is in a separate loop */
7628       for (l = tree_view->priv->columns; l; l = l->next)
7629         g_signal_connect (l->data, "notify::sizing",
7630                           G_CALLBACK (column_sizing_notify), tree_view);
7631
7632       tree_view->priv->fixed_height_mode = 1;
7633       tree_view->priv->fixed_height = -1;
7634
7635       if (tree_view->priv->tree)
7636         initialize_fixed_height_mode (tree_view);
7637     }
7638
7639   g_object_notify (G_OBJECT (tree_view), "fixed-height-mode");
7640 }
7641
7642 /**
7643  * gtk_tree_view_get_fixed_height_mode:
7644  * @tree_view: a #GtkTreeView
7645  *
7646  * Returns whether fixed height mode is turned on for @tree_view.
7647  *
7648  * Return value: %TRUE if @tree_view is in fixed height mode
7649  *
7650  * Since: 2.6
7651  **/
7652 gboolean
7653 gtk_tree_view_get_fixed_height_mode (GtkTreeView *tree_view)
7654 {
7655   return tree_view->priv->fixed_height_mode;
7656 }
7657
7658 /* Returns TRUE if the focus is within the headers, after the focus operation is
7659  * done
7660  */
7661 static gboolean
7662 gtk_tree_view_header_focus (GtkTreeView      *tree_view,
7663                             GtkDirectionType  dir,
7664                             gboolean          clamp_column_visible)
7665 {
7666   GtkWidget *focus_child;
7667
7668   GList *last_column, *first_column;
7669   GList *tmp_list;
7670   gboolean rtl;
7671
7672   if (! GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
7673     return FALSE;
7674
7675   focus_child = GTK_CONTAINER (tree_view)->focus_child;
7676
7677   first_column = tree_view->priv->columns;
7678   while (first_column)
7679     {
7680       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (first_column->data)->button) &&
7681           GTK_TREE_VIEW_COLUMN (first_column->data)->visible &&
7682           (GTK_TREE_VIEW_COLUMN (first_column->data)->clickable ||
7683            GTK_TREE_VIEW_COLUMN (first_column->data)->reorderable))
7684         break;
7685       first_column = first_column->next;
7686     }
7687
7688   /* No headers are visible, or are focusable.  We can't focus in or out.
7689    */
7690   if (first_column == NULL)
7691     return FALSE;
7692
7693   last_column = g_list_last (tree_view->priv->columns);
7694   while (last_column)
7695     {
7696       if (GTK_WIDGET_CAN_FOCUS (GTK_TREE_VIEW_COLUMN (last_column->data)->button) &&
7697           GTK_TREE_VIEW_COLUMN (last_column->data)->visible &&
7698           (GTK_TREE_VIEW_COLUMN (last_column->data)->clickable ||
7699            GTK_TREE_VIEW_COLUMN (last_column->data)->reorderable))
7700         break;
7701       last_column = last_column->prev;
7702     }
7703
7704
7705   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
7706
7707   switch (dir)
7708     {
7709     case GTK_DIR_TAB_BACKWARD:
7710     case GTK_DIR_TAB_FORWARD:
7711     case GTK_DIR_UP:
7712     case GTK_DIR_DOWN:
7713       if (focus_child == NULL)
7714         {
7715           if (tree_view->priv->focus_column != NULL && GTK_WIDGET_CAN_FOCUS (tree_view->priv->focus_column->button))
7716             focus_child = tree_view->priv->focus_column->button;
7717           else
7718             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7719           gtk_widget_grab_focus (focus_child);
7720           break;
7721         }
7722       return FALSE;
7723
7724     case GTK_DIR_LEFT:
7725     case GTK_DIR_RIGHT:
7726       if (focus_child == NULL)
7727         {
7728           if (tree_view->priv->focus_column != NULL)
7729             focus_child = tree_view->priv->focus_column->button;
7730           else if (dir == GTK_DIR_LEFT)
7731             focus_child = GTK_TREE_VIEW_COLUMN (last_column->data)->button;
7732           else
7733             focus_child = GTK_TREE_VIEW_COLUMN (first_column->data)->button;
7734           gtk_widget_grab_focus (focus_child);
7735           break;
7736         }
7737
7738       if (gtk_widget_child_focus (focus_child, dir))
7739         {
7740           /* The focus moves inside the button. */
7741           /* This is probably a great example of bad UI */
7742           break;
7743         }
7744
7745       /* We need to move the focus among the row of buttons. */
7746       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7747         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7748           break;
7749
7750       if ((tmp_list == first_column && dir == (rtl ? GTK_DIR_RIGHT : GTK_DIR_LEFT))
7751           || (tmp_list == last_column && dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT)))
7752         {
7753           gtk_widget_error_bell (GTK_WIDGET (tree_view));
7754           break;
7755         }
7756
7757       while (tmp_list)
7758         {
7759           GtkTreeViewColumn *column;
7760
7761           if (dir == (rtl ? GTK_DIR_LEFT : GTK_DIR_RIGHT))
7762             tmp_list = tmp_list->next;
7763           else
7764             tmp_list = tmp_list->prev;
7765
7766           if (tmp_list == NULL)
7767             {
7768               g_warning ("Internal button not found");
7769               break;
7770             }
7771           column = tmp_list->data;
7772           if (column->button &&
7773               column->visible &&
7774               GTK_WIDGET_CAN_FOCUS (column->button))
7775             {
7776               focus_child = column->button;
7777               gtk_widget_grab_focus (column->button);
7778               break;
7779             }
7780         }
7781       break;
7782     default:
7783       g_assert_not_reached ();
7784       break;
7785     }
7786
7787   /* if focus child is non-null, we assume it's been set to the current focus child
7788    */
7789   if (focus_child)
7790     {
7791       for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
7792         if (GTK_TREE_VIEW_COLUMN (tmp_list->data)->button == focus_child)
7793           {
7794             tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
7795             break;
7796           }
7797
7798       if (clamp_column_visible)
7799         {
7800           gtk_tree_view_clamp_column_visible (tree_view,
7801                                               tree_view->priv->focus_column,
7802                                               FALSE);
7803         }
7804     }
7805
7806   return (focus_child != NULL);
7807 }
7808
7809 /* This function returns in 'path' the first focusable path, if the given path
7810  * is already focusable, it's the returned one.
7811  */
7812 static gboolean
7813 search_first_focusable_path (GtkTreeView  *tree_view,
7814                              GtkTreePath **path,
7815                              gboolean      search_forward,
7816                              GtkRBTree   **new_tree,
7817                              GtkRBNode   **new_node)
7818 {
7819   GtkRBTree *tree = NULL;
7820   GtkRBNode *node = NULL;
7821
7822   if (!path || !*path)
7823     return FALSE;
7824
7825   _gtk_tree_view_find_node (tree_view, *path, &tree, &node);
7826
7827   if (!tree || !node)
7828     return FALSE;
7829
7830   while (node && row_is_separator (tree_view, NULL, *path))
7831     {
7832       if (search_forward)
7833         _gtk_rbtree_next_full (tree, node, &tree, &node);
7834       else
7835         _gtk_rbtree_prev_full (tree, node, &tree, &node);
7836
7837       if (*path)
7838         gtk_tree_path_free (*path);
7839
7840       if (node)
7841         *path = _gtk_tree_view_find_path (tree_view, tree, node);
7842       else
7843         *path = NULL;
7844     }
7845
7846   if (new_tree)
7847     *new_tree = tree;
7848
7849   if (new_node)
7850     *new_node = node;
7851
7852   return (*path != NULL);
7853 }
7854
7855 static gint
7856 gtk_tree_view_focus (GtkWidget        *widget,
7857                      GtkDirectionType  direction)
7858 {
7859   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7860   GtkContainer *container = GTK_CONTAINER (widget);
7861   GtkWidget *focus_child;
7862
7863   if (!GTK_WIDGET_IS_SENSITIVE (container) || !GTK_WIDGET_CAN_FOCUS (widget))
7864     return FALSE;
7865
7866   focus_child = container->focus_child;
7867
7868   gtk_tree_view_stop_editing (GTK_TREE_VIEW (widget), FALSE);
7869   /* Case 1.  Headers currently have focus. */
7870   if (focus_child)
7871     {
7872       switch (direction)
7873         {
7874         case GTK_DIR_LEFT:
7875         case GTK_DIR_RIGHT:
7876           gtk_tree_view_header_focus (tree_view, direction, TRUE);
7877           return TRUE;
7878         case GTK_DIR_TAB_BACKWARD:
7879         case GTK_DIR_UP:
7880           return FALSE;
7881         case GTK_DIR_TAB_FORWARD:
7882         case GTK_DIR_DOWN:
7883           gtk_widget_grab_focus (widget);
7884           return TRUE;
7885         default:
7886           g_assert_not_reached ();
7887           return FALSE;
7888         }
7889     }
7890
7891   /* Case 2. We don't have focus at all. */
7892   if (!GTK_WIDGET_HAS_FOCUS (container))
7893     {
7894       if (!gtk_tree_view_header_focus (tree_view, direction, FALSE))
7895         gtk_widget_grab_focus (widget);
7896       return TRUE;
7897     }
7898
7899   /* Case 3. We have focus already. */
7900   if (direction == GTK_DIR_TAB_BACKWARD)
7901     return (gtk_tree_view_header_focus (tree_view, direction, FALSE));
7902   else if (direction == GTK_DIR_TAB_FORWARD)
7903     return FALSE;
7904
7905   /* Other directions caught by the keybindings */
7906   gtk_widget_grab_focus (widget);
7907   return TRUE;
7908 }
7909
7910 static void
7911 gtk_tree_view_grab_focus (GtkWidget *widget)
7912 {
7913   GTK_WIDGET_CLASS (gtk_tree_view_parent_class)->grab_focus (widget);
7914
7915   gtk_tree_view_focus_to_cursor (GTK_TREE_VIEW (widget));
7916 }
7917
7918 static void
7919 gtk_tree_view_style_set (GtkWidget *widget,
7920                          GtkStyle *previous_style)
7921 {
7922   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
7923   GList *list;
7924   GtkTreeViewColumn *column;
7925
7926   if (GTK_WIDGET_REALIZED (widget))
7927     {
7928       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
7929       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
7930       gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);
7931
7932       gtk_tree_view_set_grid_lines (tree_view, tree_view->priv->grid_lines);
7933       gtk_tree_view_set_enable_tree_lines (tree_view, tree_view->priv->tree_lines_enabled);
7934     }
7935
7936   gtk_widget_style_get (widget,
7937                         "expander-size", &tree_view->priv->expander_size,
7938                         NULL);
7939   tree_view->priv->expander_size += EXPANDER_EXTRA_PADDING;
7940
7941   for (list = tree_view->priv->columns; list; list = list->next)
7942     {
7943       column = list->data;
7944       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
7945     }
7946
7947   tree_view->priv->fixed_height = -1;
7948   _gtk_rbtree_mark_invalid (tree_view->priv->tree);
7949
7950   gtk_widget_queue_resize (widget);
7951 }
7952
7953
7954 static void
7955 gtk_tree_view_set_focus_child (GtkContainer *container,
7956                                GtkWidget    *child)
7957 {
7958   GtkTreeView *tree_view = GTK_TREE_VIEW (container);
7959   GList *list;
7960
7961   for (list = tree_view->priv->columns; list; list = list->next)
7962     {
7963       if (GTK_TREE_VIEW_COLUMN (list->data)->button == child)
7964         {
7965           tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
7966           break;
7967         }
7968     }
7969
7970   GTK_CONTAINER_CLASS (gtk_tree_view_parent_class)->set_focus_child (container, child);
7971 }
7972
7973 static void
7974 gtk_tree_view_set_adjustments (GtkTreeView   *tree_view,
7975                                GtkAdjustment *hadj,
7976                                GtkAdjustment *vadj)
7977 {
7978   gboolean need_adjust = FALSE;
7979
7980   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
7981
7982   if (hadj)
7983     g_return_if_fail (GTK_IS_ADJUSTMENT (hadj));
7984   else
7985     hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
7986   if (vadj)
7987     g_return_if_fail (GTK_IS_ADJUSTMENT (vadj));
7988   else
7989     vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
7990
7991   if (tree_view->priv->hadjustment && (tree_view->priv->hadjustment != hadj))
7992     {
7993       g_signal_handlers_disconnect_by_func (tree_view->priv->hadjustment,
7994                                             gtk_tree_view_adjustment_changed,
7995                                             tree_view);
7996       g_object_unref (tree_view->priv->hadjustment);
7997     }
7998
7999   if (tree_view->priv->vadjustment && (tree_view->priv->vadjustment != vadj))
8000     {
8001       g_signal_handlers_disconnect_by_func (tree_view->priv->vadjustment,
8002                                             gtk_tree_view_adjustment_changed,
8003                                             tree_view);
8004       g_object_unref (tree_view->priv->vadjustment);
8005     }
8006
8007   if (tree_view->priv->hadjustment != hadj)
8008     {
8009       tree_view->priv->hadjustment = hadj;
8010       g_object_ref_sink (tree_view->priv->hadjustment);
8011
8012       g_signal_connect (tree_view->priv->hadjustment, "value-changed",
8013                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8014                         tree_view);
8015       need_adjust = TRUE;
8016     }
8017
8018   if (tree_view->priv->vadjustment != vadj)
8019     {
8020       tree_view->priv->vadjustment = vadj;
8021       g_object_ref_sink (tree_view->priv->vadjustment);
8022
8023       g_signal_connect (tree_view->priv->vadjustment, "value-changed",
8024                         G_CALLBACK (gtk_tree_view_adjustment_changed),
8025                         tree_view);
8026       need_adjust = TRUE;
8027     }
8028
8029   if (need_adjust)
8030     gtk_tree_view_adjustment_changed (NULL, tree_view);
8031 }
8032
8033
8034 static gboolean
8035 gtk_tree_view_real_move_cursor (GtkTreeView       *tree_view,
8036                                 GtkMovementStep    step,
8037                                 gint               count)
8038 {
8039   GdkModifierType state;
8040
8041   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
8042   g_return_val_if_fail (step == GTK_MOVEMENT_LOGICAL_POSITIONS ||
8043                         step == GTK_MOVEMENT_VISUAL_POSITIONS ||
8044                         step == GTK_MOVEMENT_DISPLAY_LINES ||
8045                         step == GTK_MOVEMENT_PAGES ||
8046                         step == GTK_MOVEMENT_BUFFER_ENDS, FALSE);
8047
8048   if (tree_view->priv->tree == NULL)
8049     return FALSE;
8050   if (!GTK_WIDGET_HAS_FOCUS (GTK_WIDGET (tree_view)))
8051     return FALSE;
8052
8053   gtk_tree_view_stop_editing (tree_view, FALSE);
8054   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
8055   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
8056
8057   if (gtk_get_current_event_state (&state))
8058     {
8059       if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8060         tree_view->priv->ctrl_pressed = TRUE;
8061       if ((state & GDK_SHIFT_MASK) == GDK_SHIFT_MASK)
8062         tree_view->priv->shift_pressed = TRUE;
8063     }
8064   /* else we assume not pressed */
8065
8066   switch (step)
8067     {
8068       /* currently we make no distinction.  When we go bi-di, we need to */
8069     case GTK_MOVEMENT_LOGICAL_POSITIONS:
8070     case GTK_MOVEMENT_VISUAL_POSITIONS:
8071       gtk_tree_view_move_cursor_left_right (tree_view, count);
8072       break;
8073     case GTK_MOVEMENT_DISPLAY_LINES:
8074       gtk_tree_view_move_cursor_up_down (tree_view, count);
8075       break;
8076     case GTK_MOVEMENT_PAGES:
8077       gtk_tree_view_move_cursor_page_up_down (tree_view, count);
8078       break;
8079     case GTK_MOVEMENT_BUFFER_ENDS:
8080       gtk_tree_view_move_cursor_start_end (tree_view, count);
8081       break;
8082     default:
8083       g_assert_not_reached ();
8084     }
8085
8086   tree_view->priv->ctrl_pressed = FALSE;
8087   tree_view->priv->shift_pressed = FALSE;
8088
8089   return TRUE;
8090 }
8091
8092 static void
8093 gtk_tree_view_put (GtkTreeView *tree_view,
8094                    GtkWidget   *child_widget,
8095                    /* in bin_window coordinates */
8096                    gint         x,
8097                    gint         y,
8098                    gint         width,
8099                    gint         height)
8100 {
8101   GtkTreeViewChild *child;
8102
8103   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8104   g_return_if_fail (GTK_IS_WIDGET (child_widget));
8105
8106   child = g_slice_new (GtkTreeViewChild);
8107
8108   child->widget = child_widget;
8109   child->x = x;
8110   child->y = y;
8111   child->width = width;
8112   child->height = height;
8113
8114   tree_view->priv->children = g_list_append (tree_view->priv->children, child);
8115
8116   if (GTK_WIDGET_REALIZED (tree_view))
8117     gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
8118
8119   gtk_widget_set_parent (child_widget, GTK_WIDGET (tree_view));
8120 }
8121
8122 void
8123 _gtk_tree_view_child_move_resize (GtkTreeView *tree_view,
8124                                   GtkWidget   *widget,
8125                                   /* in tree coordinates */
8126                                   gint         x,
8127                                   gint         y,
8128                                   gint         width,
8129                                   gint         height)
8130 {
8131   GtkTreeViewChild *child = NULL;
8132   GList *list;
8133   GdkRectangle allocation;
8134
8135   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
8136   g_return_if_fail (GTK_IS_WIDGET (widget));
8137
8138   for (list = tree_view->priv->children; list; list = list->next)
8139     {
8140       if (((GtkTreeViewChild *)list->data)->widget == widget)
8141         {
8142           child = list->data;
8143           break;
8144         }
8145     }
8146   if (child == NULL)
8147     return;
8148
8149   allocation.x = child->x = x;
8150   allocation.y = child->y = y;
8151   allocation.width = child->width = width;
8152   allocation.height = child->height = height;
8153
8154   if (GTK_WIDGET_REALIZED (widget))
8155     gtk_widget_size_allocate (widget, &allocation);
8156 }
8157
8158
8159 /* TreeModel Callbacks
8160  */
8161
8162 static void
8163 gtk_tree_view_row_changed (GtkTreeModel *model,
8164                            GtkTreePath  *path,
8165                            GtkTreeIter  *iter,
8166                            gpointer      data)
8167 {
8168   GtkTreeView *tree_view = (GtkTreeView *)data;
8169   GtkRBTree *tree;
8170   GtkRBNode *node;
8171   gboolean free_path = FALSE;
8172   GList *list;
8173   GtkTreePath *cursor_path;
8174
8175   g_return_if_fail (path != NULL || iter != NULL);
8176
8177   if (tree_view->priv->cursor != NULL)
8178     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8179   else
8180     cursor_path = NULL;
8181
8182   if (tree_view->priv->edited_column &&
8183       (cursor_path == NULL || gtk_tree_path_compare (cursor_path, path) == 0))
8184     gtk_tree_view_stop_editing (tree_view, TRUE);
8185
8186   if (cursor_path != NULL)
8187     gtk_tree_path_free (cursor_path);
8188
8189   if (path == NULL)
8190     {
8191       path = gtk_tree_model_get_path (model, iter);
8192       free_path = TRUE;
8193     }
8194   else if (iter == NULL)
8195     gtk_tree_model_get_iter (model, iter, path);
8196
8197   if (_gtk_tree_view_find_node (tree_view,
8198                                 path,
8199                                 &tree,
8200                                 &node))
8201     /* We aren't actually showing the node */
8202     goto done;
8203
8204   if (tree == NULL)
8205     goto done;
8206
8207   if (tree_view->priv->fixed_height_mode
8208       && tree_view->priv->fixed_height >= 0)
8209     {
8210       _gtk_rbtree_node_set_height (tree, node, tree_view->priv->fixed_height);
8211       if (GTK_WIDGET_REALIZED (tree_view))
8212         gtk_tree_view_node_queue_redraw (tree_view, tree, node);
8213     }
8214   else
8215     {
8216       _gtk_rbtree_node_mark_invalid (tree, node);
8217       for (list = tree_view->priv->columns; list; list = list->next)
8218         {
8219           GtkTreeViewColumn *column;
8220
8221           column = list->data;
8222           if (! column->visible)
8223             continue;
8224
8225           if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8226             {
8227               _gtk_tree_view_column_cell_set_dirty (column, TRUE);
8228             }
8229         }
8230     }
8231
8232  done:
8233   if (GTK_WIDGET_REALIZED (tree_view) && !tree_view->priv->fixed_height_mode)
8234     install_presize_handler (tree_view);
8235   if (free_path)
8236     gtk_tree_path_free (path);
8237 }
8238
8239 static void
8240 gtk_tree_view_row_inserted (GtkTreeModel *model,
8241                             GtkTreePath  *path,
8242                             GtkTreeIter  *iter,
8243                             gpointer      data)
8244 {
8245   GtkTreeView *tree_view = (GtkTreeView *) data;
8246   gint *indices;
8247   GtkRBTree *tmptree, *tree;
8248   GtkRBNode *tmpnode = NULL;
8249   gint depth;
8250   gint i = 0;
8251   gint height;
8252   gboolean free_path = FALSE;
8253   gboolean node_visible = TRUE;
8254
8255   g_return_if_fail (path != NULL || iter != NULL);
8256
8257   if (tree_view->priv->fixed_height_mode
8258       && tree_view->priv->fixed_height >= 0)
8259     height = tree_view->priv->fixed_height;
8260   else
8261     height = 0;
8262
8263   if (path == NULL)
8264     {
8265       path = gtk_tree_model_get_path (model, iter);
8266       free_path = TRUE;
8267     }
8268   else if (iter == NULL)
8269     gtk_tree_model_get_iter (model, iter, path);
8270
8271   if (tree_view->priv->tree == NULL)
8272     tree_view->priv->tree = _gtk_rbtree_new ();
8273
8274   tmptree = tree = tree_view->priv->tree;
8275
8276   /* Update all row-references */
8277   gtk_tree_row_reference_inserted (G_OBJECT (data), path);
8278   depth = gtk_tree_path_get_depth (path);
8279   indices = gtk_tree_path_get_indices (path);
8280
8281   /* First, find the parent tree */
8282   while (i < depth - 1)
8283     {
8284       if (tmptree == NULL)
8285         {
8286           /* We aren't showing the node */
8287           node_visible = FALSE;
8288           goto done;
8289         }
8290
8291       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8292       if (tmpnode == NULL)
8293         {
8294           g_warning ("A node was inserted with a parent that's not in the tree.\n" \
8295                      "This possibly means that a GtkTreeModel inserted a child node\n" \
8296                      "before the parent was inserted.");
8297           goto done;
8298         }
8299       else if (!GTK_RBNODE_FLAG_SET (tmpnode, GTK_RBNODE_IS_PARENT))
8300         {
8301           /* FIXME enforce correct behavior on model, probably */
8302           /* In theory, the model should have emitted has_child_toggled here.  We
8303            * try to catch it anyway, just to be safe, in case the model hasn't.
8304            */
8305           GtkTreePath *tmppath = _gtk_tree_view_find_path (tree_view,
8306                                                            tree,
8307                                                            tmpnode);
8308           gtk_tree_view_row_has_child_toggled (model, tmppath, NULL, data);
8309           gtk_tree_path_free (tmppath);
8310           goto done;
8311         }
8312
8313       tmptree = tmpnode->children;
8314       tree = tmptree;
8315       i++;
8316     }
8317
8318   if (tree == NULL)
8319     {
8320       node_visible = FALSE;
8321       goto done;
8322     }
8323
8324   /* ref the node */
8325   gtk_tree_model_ref_node (tree_view->priv->model, iter);
8326   if (indices[depth - 1] == 0)
8327     {
8328       tmpnode = _gtk_rbtree_find_count (tree, 1);
8329       tmpnode = _gtk_rbtree_insert_before (tree, tmpnode, height, FALSE);
8330     }
8331   else
8332     {
8333       tmpnode = _gtk_rbtree_find_count (tree, indices[depth - 1]);
8334       tmpnode = _gtk_rbtree_insert_after (tree, tmpnode, height, FALSE);
8335     }
8336
8337  done:
8338   if (height > 0)
8339     {
8340       if (tree)
8341         _gtk_rbtree_node_mark_valid (tree, tmpnode);
8342
8343       if (node_visible && node_is_visible (tree_view, tree, tmpnode))
8344         gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8345       else
8346         gtk_widget_queue_resize_no_redraw (GTK_WIDGET (tree_view));
8347     }
8348   else
8349     install_presize_handler (tree_view);
8350   if (free_path)
8351     gtk_tree_path_free (path);
8352 }
8353
8354 static void
8355 gtk_tree_view_row_has_child_toggled (GtkTreeModel *model,
8356                                      GtkTreePath  *path,
8357                                      GtkTreeIter  *iter,
8358                                      gpointer      data)
8359 {
8360   GtkTreeView *tree_view = (GtkTreeView *)data;
8361   GtkTreeIter real_iter;
8362   gboolean has_child;
8363   GtkRBTree *tree;
8364   GtkRBNode *node;
8365   gboolean free_path = FALSE;
8366
8367   g_return_if_fail (path != NULL || iter != NULL);
8368
8369   if (iter)
8370     real_iter = *iter;
8371
8372   if (path == NULL)
8373     {
8374       path = gtk_tree_model_get_path (model, iter);
8375       free_path = TRUE;
8376     }
8377   else if (iter == NULL)
8378     gtk_tree_model_get_iter (model, &real_iter, path);
8379
8380   if (_gtk_tree_view_find_node (tree_view,
8381                                 path,
8382                                 &tree,
8383                                 &node))
8384     /* We aren't actually showing the node */
8385     goto done;
8386
8387   if (tree == NULL)
8388     goto done;
8389
8390   has_child = gtk_tree_model_iter_has_child (model, &real_iter);
8391   /* Sanity check.
8392    */
8393   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT) == has_child)
8394     goto done;
8395
8396   if (has_child)
8397     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_PARENT);
8398   else
8399     GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_PARENT);
8400
8401   if (has_child && GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8402     {
8403       GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
8404       if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS))
8405         {
8406           GList *list;
8407
8408           for (list = tree_view->priv->columns; list; list = list->next)
8409             if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
8410               {
8411                 GTK_TREE_VIEW_COLUMN (list->data)->dirty = TRUE;
8412                 _gtk_tree_view_column_cell_set_dirty (GTK_TREE_VIEW_COLUMN (list->data), TRUE);
8413                 break;
8414               }
8415         }
8416       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8417     }
8418   else
8419     {
8420       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
8421     }
8422
8423  done:
8424   if (free_path)
8425     gtk_tree_path_free (path);
8426 }
8427
8428 static void
8429 count_children_helper (GtkRBTree *tree,
8430                        GtkRBNode *node,
8431                        gpointer   data)
8432 {
8433   if (node->children)
8434     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, data);
8435   (*((gint *)data))++;
8436 }
8437
8438 static void
8439 check_selection_helper (GtkRBTree *tree,
8440                         GtkRBNode *node,
8441                         gpointer   data)
8442 {
8443   gint *value = (gint *)data;
8444
8445   *value = GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED);
8446
8447   if (node->children && !*value)
8448     _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, check_selection_helper, data);
8449 }
8450
8451 static void
8452 gtk_tree_view_row_deleted (GtkTreeModel *model,
8453                            GtkTreePath  *path,
8454                            gpointer      data)
8455 {
8456   GtkTreeView *tree_view = (GtkTreeView *)data;
8457   GtkRBTree *tree;
8458   GtkRBNode *node;
8459   GList *list;
8460   gint selection_changed = FALSE;
8461
8462   g_return_if_fail (path != NULL);
8463
8464   gtk_tree_row_reference_deleted (G_OBJECT (data), path);
8465
8466   if (_gtk_tree_view_find_node (tree_view, path, &tree, &node))
8467     return;
8468
8469   if (tree == NULL)
8470     return;
8471
8472   /* check if the selection has been changed */
8473   _gtk_rbtree_traverse (tree, node, G_POST_ORDER,
8474                         check_selection_helper, &selection_changed);
8475
8476   for (list = tree_view->priv->columns; list; list = list->next)
8477     if (((GtkTreeViewColumn *)list->data)->visible &&
8478         ((GtkTreeViewColumn *)list->data)->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
8479       _gtk_tree_view_column_cell_set_dirty ((GtkTreeViewColumn *)list->data, TRUE);
8480
8481   /* Ensure we don't have a dangling pointer to a dead node */
8482   ensure_unprelighted (tree_view);
8483
8484   /* Cancel editting if we've started */
8485   gtk_tree_view_stop_editing (tree_view, TRUE);
8486
8487   /* If we have a node expanded/collapsed timeout, remove it */
8488   remove_expand_collapse_timeout (tree_view);
8489
8490   if (tree_view->priv->destroy_count_func)
8491     {
8492       gint child_count = 0;
8493       if (node->children)
8494         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
8495       tree_view->priv->destroy_count_func (tree_view, path, child_count, tree_view->priv->destroy_count_data);
8496     }
8497
8498   if (tree->root->count == 1)
8499     {
8500       if (tree_view->priv->tree == tree)
8501         tree_view->priv->tree = NULL;
8502
8503       _gtk_rbtree_remove (tree);
8504     }
8505   else
8506     {
8507       _gtk_rbtree_remove_node (tree, node);
8508     }
8509
8510   if (! gtk_tree_row_reference_valid (tree_view->priv->top_row))
8511     {
8512       gtk_tree_row_reference_free (tree_view->priv->top_row);
8513       tree_view->priv->top_row = NULL;
8514     }
8515
8516   install_scroll_sync_handler (tree_view);
8517
8518   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
8519
8520   if (selection_changed)
8521     g_signal_emit_by_name (tree_view->priv->selection, "changed");
8522 }
8523
8524 static void
8525 gtk_tree_view_rows_reordered (GtkTreeModel *model,
8526                               GtkTreePath  *parent,
8527                               GtkTreeIter  *iter,
8528                               gint         *new_order,
8529                               gpointer      data)
8530 {
8531   GtkTreeView *tree_view = GTK_TREE_VIEW (data);
8532   GtkRBTree *tree;
8533   GtkRBNode *node;
8534   gint len;
8535
8536   len = gtk_tree_model_iter_n_children (model, iter);
8537
8538   if (len < 2)
8539     return;
8540
8541   gtk_tree_row_reference_reordered (G_OBJECT (data),
8542                                     parent,
8543                                     iter,
8544                                     new_order);
8545
8546   if (_gtk_tree_view_find_node (tree_view,
8547                                 parent,
8548                                 &tree,
8549                                 &node))
8550     return;
8551
8552   /* We need to special case the parent path */
8553   if (tree == NULL)
8554     tree = tree_view->priv->tree;
8555   else
8556     tree = node->children;
8557
8558   if (tree == NULL)
8559     return;
8560
8561   if (tree_view->priv->edited_column)
8562     gtk_tree_view_stop_editing (tree_view, TRUE);
8563
8564   /* we need to be unprelighted */
8565   ensure_unprelighted (tree_view);
8566
8567   /* clear the timeout */
8568   cancel_arrow_animation (tree_view);
8569
8570   _gtk_rbtree_reorder (tree, new_order, len);
8571
8572   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
8573
8574   gtk_tree_view_dy_to_top_row (tree_view);
8575 }
8576
8577
8578 /* Internal tree functions
8579  */
8580
8581
8582 static void
8583 gtk_tree_view_get_background_xrange (GtkTreeView       *tree_view,
8584                                      GtkRBTree         *tree,
8585                                      GtkTreeViewColumn *column,
8586                                      gint              *x1,
8587                                      gint              *x2)
8588 {
8589   GtkTreeViewColumn *tmp_column = NULL;
8590   gint total_width;
8591   GList *list;
8592   gboolean rtl;
8593
8594   if (x1)
8595     *x1 = 0;
8596
8597   if (x2)
8598     *x2 = 0;
8599
8600   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8601
8602   total_width = 0;
8603   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8604        list;
8605        list = (rtl ? list->prev : list->next))
8606     {
8607       tmp_column = list->data;
8608
8609       if (tmp_column == column)
8610         break;
8611
8612       if (tmp_column->visible)
8613         total_width += tmp_column->width;
8614     }
8615
8616   if (tmp_column != column)
8617     {
8618       g_warning (G_STRLOC": passed-in column isn't in the tree");
8619       return;
8620     }
8621
8622   if (x1)
8623     *x1 = total_width;
8624
8625   if (x2)
8626     {
8627       if (column->visible)
8628         *x2 = total_width + column->width;
8629       else
8630         *x2 = total_width; /* width of 0 */
8631     }
8632 }
8633 static void
8634 gtk_tree_view_get_arrow_xrange (GtkTreeView *tree_view,
8635                                 GtkRBTree   *tree,
8636                                 gint        *x1,
8637                                 gint        *x2)
8638 {
8639   gint x_offset = 0;
8640   GList *list;
8641   GtkTreeViewColumn *tmp_column = NULL;
8642   gint total_width;
8643   gboolean indent_expanders;
8644   gboolean rtl;
8645
8646   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
8647
8648   total_width = 0;
8649   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
8650        list;
8651        list = (rtl ? list->prev : list->next))
8652     {
8653       tmp_column = list->data;
8654
8655       if (gtk_tree_view_is_expander_column (tree_view, tmp_column))
8656         {
8657           if (rtl)
8658             x_offset = total_width + tmp_column->width - tree_view->priv->expander_size;
8659           else
8660             x_offset = total_width;
8661           break;
8662         }
8663
8664       if (tmp_column->visible)
8665         total_width += tmp_column->width;
8666     }
8667
8668   gtk_widget_style_get (GTK_WIDGET (tree_view),
8669                         "indent-expanders", &indent_expanders,
8670                         NULL);
8671
8672   if (indent_expanders)
8673     {
8674       if (rtl)
8675         x_offset -= tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8676       else
8677         x_offset += tree_view->priv->expander_size * _gtk_rbtree_get_depth (tree);
8678     }
8679
8680   *x1 = x_offset;
8681
8682   if (tmp_column && tmp_column->visible)
8683     /* +1 because x2 isn't included in the range. */
8684     *x2 = *x1 + tree_view->priv->expander_size + 1;
8685   else
8686     *x2 = *x1;
8687 }
8688
8689 static void
8690 gtk_tree_view_build_tree (GtkTreeView *tree_view,
8691                           GtkRBTree   *tree,
8692                           GtkTreeIter *iter,
8693                           gint         depth,
8694                           gboolean     recurse)
8695 {
8696   GtkRBNode *temp = NULL;
8697   GtkTreePath *path = NULL;
8698   gboolean is_list = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST);
8699
8700   do
8701     {
8702       gtk_tree_model_ref_node (tree_view->priv->model, iter);
8703       temp = _gtk_rbtree_insert_after (tree, temp, 0, FALSE);
8704
8705       if (tree_view->priv->fixed_height > 0)
8706         {
8707           if (GTK_RBNODE_FLAG_SET (temp, GTK_RBNODE_INVALID))
8708             {
8709               _gtk_rbtree_node_set_height (tree, temp, tree_view->priv->fixed_height);
8710               _gtk_rbtree_node_mark_valid (tree, temp);
8711             }
8712         }
8713
8714       if (is_list)
8715         continue;
8716
8717       if (recurse)
8718         {
8719           GtkTreeIter child;
8720
8721           if (!path)
8722             path = gtk_tree_model_get_path (tree_view->priv->model, iter);
8723           else
8724             gtk_tree_path_next (path);
8725
8726           if (gtk_tree_model_iter_children (tree_view->priv->model, &child, iter))
8727             {
8728               gboolean expand;
8729
8730               g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, iter, path, &expand);
8731
8732               if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter)
8733                   && !expand)
8734                 {
8735                   temp->children = _gtk_rbtree_new ();
8736                   temp->children->parent_tree = tree;
8737                   temp->children->parent_node = temp;
8738                   gtk_tree_view_build_tree (tree_view, temp->children, &child, depth + 1, recurse);
8739                 }
8740             }
8741         }
8742
8743       if (gtk_tree_model_iter_has_child (tree_view->priv->model, iter))
8744         {
8745           if ((temp->flags&GTK_RBNODE_IS_PARENT) != GTK_RBNODE_IS_PARENT)
8746             temp->flags ^= GTK_RBNODE_IS_PARENT;
8747         }
8748     }
8749   while (gtk_tree_model_iter_next (tree_view->priv->model, iter));
8750
8751   if (path)
8752     gtk_tree_path_free (path);
8753 }
8754
8755 /* Make sure the node is visible vertically */
8756 static void
8757 gtk_tree_view_clamp_node_visible (GtkTreeView *tree_view,
8758                                   GtkRBTree   *tree,
8759                                   GtkRBNode   *node)
8760 {
8761   gint node_dy, height;
8762   GtkTreePath *path = NULL;
8763
8764   if (!GTK_WIDGET_REALIZED (tree_view))
8765     return;
8766
8767   /* just return if the node is visible, avoiding a costly expose */
8768   node_dy = _gtk_rbtree_node_find_offset (tree, node);
8769   height = ROW_HEIGHT (tree_view, GTK_RBNODE_GET_HEIGHT (node));
8770   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_INVALID)
8771       && node_dy >= tree_view->priv->vadjustment->value
8772       && node_dy + height <= (tree_view->priv->vadjustment->value
8773                               + tree_view->priv->vadjustment->page_size))
8774     return;
8775
8776   path = _gtk_tree_view_find_path (tree_view, tree, node);
8777   if (path)
8778     {
8779       /* We process updates because we want to clear old selected items when we scroll.
8780        * if this is removed, we get a "selection streak" at the bottom. */
8781       gdk_window_process_updates (tree_view->priv->bin_window, TRUE);
8782       gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
8783       gtk_tree_path_free (path);
8784     }
8785 }
8786
8787 static void
8788 gtk_tree_view_clamp_column_visible (GtkTreeView       *tree_view,
8789                                     GtkTreeViewColumn *column,
8790                                     gboolean           focus_to_cell)
8791 {
8792   gint x, width;
8793
8794   if (column == NULL)
8795     return;
8796
8797   x = column->button->allocation.x;
8798   width = column->button->allocation.width;
8799
8800   if (width > tree_view->priv->hadjustment->page_size)
8801     {
8802       /* The column is larger than the horizontal page size.  If the
8803        * column has cells which can be focussed individually, then we make
8804        * sure the cell which gets focus is fully visible (if even the
8805        * focus cell is bigger than the page size, we make sure the
8806        * left-hand side of the cell is visible).
8807        *
8808        * If the column does not have those so-called special cells, we
8809        * make sure the left-hand side of the column is visible.
8810        */
8811
8812       if (focus_to_cell && gtk_tree_view_has_special_cell (tree_view))
8813         {
8814           GtkTreePath *cursor_path;
8815           GdkRectangle background_area, cell_area, focus_area;
8816
8817           cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
8818
8819           gtk_tree_view_get_cell_area (tree_view,
8820                                        cursor_path, column, &cell_area);
8821           gtk_tree_view_get_background_area (tree_view,
8822                                              cursor_path, column,
8823                                              &background_area);
8824
8825           gtk_tree_path_free (cursor_path);
8826
8827           _gtk_tree_view_column_get_focus_area (column,
8828                                                 &background_area,
8829                                                 &cell_area,
8830                                                 &focus_area);
8831
8832           x = focus_area.x;
8833           width = focus_area.width;
8834
8835           if (width < tree_view->priv->hadjustment->page_size)
8836             {
8837               if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8838                 gtk_adjustment_set_value (tree_view->priv->hadjustment,
8839                                           x + width - tree_view->priv->hadjustment->page_size);
8840               else if (tree_view->priv->hadjustment->value > x)
8841                 gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8842             }
8843         }
8844
8845       gtk_adjustment_set_value (tree_view->priv->hadjustment,
8846                                 CLAMP (x,
8847                                        tree_view->priv->hadjustment->lower,
8848                                        tree_view->priv->hadjustment->upper
8849                                        - tree_view->priv->hadjustment->page_size));
8850     }
8851   else
8852     {
8853       if ((tree_view->priv->hadjustment->value + tree_view->priv->hadjustment->page_size) < (x + width))
8854           gtk_adjustment_set_value (tree_view->priv->hadjustment,
8855                                     x + width - tree_view->priv->hadjustment->page_size);
8856       else if (tree_view->priv->hadjustment->value > x)
8857         gtk_adjustment_set_value (tree_view->priv->hadjustment, x);
8858   }
8859 }
8860
8861 /* This function could be more efficient.  I'll optimize it if profiling seems
8862  * to imply that it is important */
8863 GtkTreePath *
8864 _gtk_tree_view_find_path (GtkTreeView *tree_view,
8865                           GtkRBTree   *tree,
8866                           GtkRBNode   *node)
8867 {
8868   GtkTreePath *path;
8869   GtkRBTree *tmp_tree;
8870   GtkRBNode *tmp_node, *last;
8871   gint count;
8872
8873   path = gtk_tree_path_new ();
8874
8875   g_return_val_if_fail (node != NULL, path);
8876   g_return_val_if_fail (node != tree->nil, path);
8877
8878   count = 1 + node->left->count;
8879
8880   last = node;
8881   tmp_node = node->parent;
8882   tmp_tree = tree;
8883   while (tmp_tree)
8884     {
8885       while (tmp_node != tmp_tree->nil)
8886         {
8887           if (tmp_node->right == last)
8888             count += 1 + tmp_node->left->count;
8889           last = tmp_node;
8890           tmp_node = tmp_node->parent;
8891         }
8892       gtk_tree_path_prepend_index (path, count - 1);
8893       last = tmp_tree->parent_node;
8894       tmp_tree = tmp_tree->parent_tree;
8895       if (last)
8896         {
8897           count = 1 + last->left->count;
8898           tmp_node = last->parent;
8899         }
8900     }
8901   return path;
8902 }
8903
8904 /* Returns TRUE if we ran out of tree before finding the path.  If the path is
8905  * invalid (ie. points to a node that's not in the tree), *tree and *node are
8906  * both set to NULL.
8907  */
8908 gboolean
8909 _gtk_tree_view_find_node (GtkTreeView  *tree_view,
8910                           GtkTreePath  *path,
8911                           GtkRBTree   **tree,
8912                           GtkRBNode   **node)
8913 {
8914   GtkRBNode *tmpnode = NULL;
8915   GtkRBTree *tmptree = tree_view->priv->tree;
8916   gint *indices = gtk_tree_path_get_indices (path);
8917   gint depth = gtk_tree_path_get_depth (path);
8918   gint i = 0;
8919
8920   *node = NULL;
8921   *tree = NULL;
8922
8923   if (depth == 0 || tmptree == NULL)
8924     return FALSE;
8925   do
8926     {
8927       tmpnode = _gtk_rbtree_find_count (tmptree, indices[i] + 1);
8928       ++i;
8929       if (tmpnode == NULL)
8930         {
8931           *tree = NULL;
8932           *node = NULL;
8933           return FALSE;
8934         }
8935       if (i >= depth)
8936         {
8937           *tree = tmptree;
8938           *node = tmpnode;
8939           return FALSE;
8940         }
8941       *tree = tmptree;
8942       *node = tmpnode;
8943       tmptree = tmpnode->children;
8944       if (tmptree == NULL)
8945         return TRUE;
8946     }
8947   while (1);
8948 }
8949
8950 static gboolean
8951 gtk_tree_view_is_expander_column (GtkTreeView       *tree_view,
8952                                   GtkTreeViewColumn *column)
8953 {
8954   GList *list;
8955
8956   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_IS_LIST))
8957     return FALSE;
8958
8959   if (tree_view->priv->expander_column != NULL)
8960     {
8961       if (tree_view->priv->expander_column == column)
8962         return TRUE;
8963       return FALSE;
8964     }
8965   else
8966     {
8967       for (list = tree_view->priv->columns;
8968            list;
8969            list = list->next)
8970         if (((GtkTreeViewColumn *)list->data)->visible)
8971           break;
8972       if (list && list->data == column)
8973         return TRUE;
8974     }
8975   return FALSE;
8976 }
8977
8978 static void
8979 gtk_tree_view_add_move_binding (GtkBindingSet  *binding_set,
8980                                 guint           keyval,
8981                                 guint           modmask,
8982                                 gboolean        add_shifted_binding,
8983                                 GtkMovementStep step,
8984                                 gint            count)
8985 {
8986
8987   gtk_binding_entry_add_signal (binding_set, keyval, modmask,
8988                                 "move-cursor", 2,
8989                                 G_TYPE_ENUM, step,
8990                                 G_TYPE_INT, count);
8991
8992   if (add_shifted_binding)
8993     gtk_binding_entry_add_signal (binding_set, keyval, GDK_SHIFT_MASK,
8994                                   "move-cursor", 2,
8995                                   G_TYPE_ENUM, step,
8996                                   G_TYPE_INT, count);
8997
8998   if ((modmask & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
8999    return;
9000
9001   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK | GDK_SHIFT_MASK,
9002                                 "move-cursor", 2,
9003                                 G_TYPE_ENUM, step,
9004                                 G_TYPE_INT, count);
9005
9006   gtk_binding_entry_add_signal (binding_set, keyval, GDK_CONTROL_MASK,
9007                                 "move-cursor", 2,
9008                                 G_TYPE_ENUM, step,
9009                                 G_TYPE_INT, count);
9010 }
9011
9012 static gint
9013 gtk_tree_view_unref_tree_helper (GtkTreeModel *model,
9014                                  GtkTreeIter  *iter,
9015                                  GtkRBTree    *tree,
9016                                  GtkRBNode    *node)
9017 {
9018   gint retval = FALSE;
9019   do
9020     {
9021       g_return_val_if_fail (node != NULL, FALSE);
9022
9023       if (node->children)
9024         {
9025           GtkTreeIter child;
9026           GtkRBTree *new_tree;
9027           GtkRBNode *new_node;
9028
9029           new_tree = node->children;
9030           new_node = new_tree->root;
9031
9032           while (new_node && new_node->left != new_tree->nil)
9033             new_node = new_node->left;
9034
9035           if (!gtk_tree_model_iter_children (model, &child, iter))
9036             return FALSE;
9037
9038           retval = retval || gtk_tree_view_unref_tree_helper (model, &child, new_tree, new_node);
9039         }
9040
9041       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
9042         retval = TRUE;
9043       gtk_tree_model_unref_node (model, iter);
9044       node = _gtk_rbtree_next (tree, node);
9045     }
9046   while (gtk_tree_model_iter_next (model, iter));
9047
9048   return retval;
9049 }
9050
9051 static gint
9052 gtk_tree_view_unref_and_check_selection_tree (GtkTreeView *tree_view,
9053                                               GtkRBTree   *tree)
9054 {
9055   GtkTreeIter iter;
9056   GtkTreePath *path;
9057   GtkRBNode *node;
9058   gint retval;
9059
9060   if (!tree)
9061     return FALSE;
9062
9063   node = tree->root;
9064   while (node && node->left != tree->nil)
9065     node = node->left;
9066
9067   g_return_val_if_fail (node != NULL, FALSE);
9068   path = _gtk_tree_view_find_path (tree_view, tree, node);
9069   gtk_tree_model_get_iter (GTK_TREE_MODEL (tree_view->priv->model),
9070                            &iter, path);
9071   retval = gtk_tree_view_unref_tree_helper (GTK_TREE_MODEL (tree_view->priv->model), &iter, tree, node);
9072   gtk_tree_path_free (path);
9073
9074   return retval;
9075 }
9076
9077 static void
9078 gtk_tree_view_set_column_drag_info (GtkTreeView       *tree_view,
9079                                     GtkTreeViewColumn *column)
9080 {
9081   GtkTreeViewColumn *left_column;
9082   GtkTreeViewColumn *cur_column = NULL;
9083   GtkTreeViewColumnReorder *reorder;
9084   gboolean rtl;
9085   GList *tmp_list;
9086   gint left;
9087
9088   /* We want to precalculate the motion list such that we know what column slots
9089    * are available.
9090    */
9091   left_column = NULL;
9092   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9093
9094   /* First, identify all possible drop spots */
9095   if (rtl)
9096     tmp_list = g_list_last (tree_view->priv->columns);
9097   else
9098     tmp_list = g_list_first (tree_view->priv->columns);
9099
9100   while (tmp_list)
9101     {
9102       cur_column = GTK_TREE_VIEW_COLUMN (tmp_list->data);
9103       tmp_list = rtl?g_list_previous (tmp_list):g_list_next (tmp_list);
9104
9105       if (cur_column->visible == FALSE)
9106         continue;
9107
9108       /* If it's not the column moving and func tells us to skip over the column, we continue. */
9109       if (left_column != column && cur_column != column &&
9110           tree_view->priv->column_drop_func &&
9111           ! tree_view->priv->column_drop_func (tree_view, column, left_column, cur_column, tree_view->priv->column_drop_func_data))
9112         {
9113           left_column = cur_column;
9114           continue;
9115         }
9116       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9117       reorder->left_column = left_column;
9118       left_column = reorder->right_column = cur_column;
9119
9120       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9121     }
9122
9123   /* Add the last one */
9124   if (tree_view->priv->column_drop_func == NULL ||
9125       ((left_column != column) &&
9126        tree_view->priv->column_drop_func (tree_view, column, left_column, NULL, tree_view->priv->column_drop_func_data)))
9127     {
9128       reorder = g_slice_new0 (GtkTreeViewColumnReorder);
9129       reorder->left_column = left_column;
9130       reorder->right_column = NULL;
9131       tree_view->priv->column_drag_info = g_list_append (tree_view->priv->column_drag_info, reorder);
9132     }
9133
9134   /* We quickly check to see if it even makes sense to reorder columns. */
9135   /* If there is nothing that can be moved, then we return */
9136
9137   if (tree_view->priv->column_drag_info == NULL)
9138     return;
9139
9140   /* We know there are always 2 slots possbile, as you can always return column. */
9141   /* If that's all there is, return */
9142   if (tree_view->priv->column_drag_info->next == NULL ||
9143       (tree_view->priv->column_drag_info->next->next == NULL &&
9144        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->data)->right_column == column &&
9145        ((GtkTreeViewColumnReorder *)tree_view->priv->column_drag_info->next->data)->left_column == column))
9146     {
9147       for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9148         g_slice_free (GtkTreeViewColumnReorder, tmp_list->data);
9149       g_list_free (tree_view->priv->column_drag_info);
9150       tree_view->priv->column_drag_info = NULL;
9151       return;
9152     }
9153   /* We fill in the ranges for the columns, now that we've isolated them */
9154   left = - TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9155
9156   for (tmp_list = tree_view->priv->column_drag_info; tmp_list; tmp_list = tmp_list->next)
9157     {
9158       reorder = (GtkTreeViewColumnReorder *) tmp_list->data;
9159
9160       reorder->left_align = left;
9161       if (tmp_list->next != NULL)
9162         {
9163           g_assert (tmp_list->next->data);
9164           left = reorder->right_align = (reorder->right_column->button->allocation.x +
9165                                          reorder->right_column->button->allocation.width +
9166                                          ((GtkTreeViewColumnReorder *)tmp_list->next->data)->left_column->button->allocation.x)/2;
9167         }
9168       else
9169         {
9170           gint width;
9171
9172           gdk_drawable_get_size (tree_view->priv->header_window, &width, NULL);
9173           reorder->right_align = width + TREE_VIEW_COLUMN_DRAG_DEAD_MULTIPLIER (tree_view);
9174         }
9175     }
9176 }
9177
9178 void
9179 _gtk_tree_view_column_start_drag (GtkTreeView       *tree_view,
9180                                   GtkTreeViewColumn *column)
9181 {
9182   GdkEvent *send_event;
9183   GtkAllocation allocation;
9184   gint x, y, width, height;
9185   GdkScreen *screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
9186   GdkDisplay *display = gdk_screen_get_display (screen);
9187
9188   g_return_if_fail (tree_view->priv->column_drag_info == NULL);
9189   g_return_if_fail (tree_view->priv->cur_reorder == NULL);
9190
9191   gtk_tree_view_set_column_drag_info (tree_view, column);
9192
9193   if (tree_view->priv->column_drag_info == NULL)
9194     return;
9195
9196   if (tree_view->priv->drag_window == NULL)
9197     {
9198       GdkWindowAttr attributes;
9199       guint attributes_mask;
9200
9201       attributes.window_type = GDK_WINDOW_CHILD;
9202       attributes.wclass = GDK_INPUT_OUTPUT;
9203       attributes.x = column->button->allocation.x;
9204       attributes.y = 0;
9205       attributes.width = column->button->allocation.width;
9206       attributes.height = column->button->allocation.height;
9207       attributes.visual = gtk_widget_get_visual (GTK_WIDGET (tree_view));
9208       attributes.colormap = gtk_widget_get_colormap (GTK_WIDGET (tree_view));
9209       attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK | GDK_POINTER_MOTION_MASK;
9210       attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
9211
9212       tree_view->priv->drag_window = gdk_window_new (tree_view->priv->bin_window,
9213                                                      &attributes,
9214                                                      attributes_mask);
9215       gdk_window_set_user_data (tree_view->priv->drag_window, GTK_WIDGET (tree_view));
9216     }
9217
9218   gdk_display_pointer_ungrab (display, GDK_CURRENT_TIME);
9219   gdk_display_keyboard_ungrab (display, GDK_CURRENT_TIME);
9220
9221   gtk_grab_remove (column->button);
9222
9223   send_event = gdk_event_new (GDK_LEAVE_NOTIFY);
9224   send_event->crossing.send_event = TRUE;
9225   send_event->crossing.window = g_object_ref (GTK_BUTTON (column->button)->event_window);
9226   send_event->crossing.subwindow = NULL;
9227   send_event->crossing.detail = GDK_NOTIFY_ANCESTOR;
9228   send_event->crossing.time = GDK_CURRENT_TIME;
9229
9230   gtk_propagate_event (column->button, send_event);
9231   gdk_event_free (send_event);
9232
9233   send_event = gdk_event_new (GDK_BUTTON_RELEASE);
9234   send_event->button.window = g_object_ref (gdk_screen_get_root_window (screen));
9235   send_event->button.send_event = TRUE;
9236   send_event->button.time = GDK_CURRENT_TIME;
9237   send_event->button.x = -1;
9238   send_event->button.y = -1;
9239   send_event->button.axes = NULL;
9240   send_event->button.state = 0;
9241   send_event->button.button = 1;
9242   send_event->button.device = gdk_display_get_core_pointer (display);
9243   send_event->button.x_root = 0;
9244   send_event->button.y_root = 0;
9245
9246   gtk_propagate_event (column->button, send_event);
9247   gdk_event_free (send_event);
9248
9249   /* Kids, don't try this at home */
9250   g_object_ref (column->button);
9251   gtk_container_remove (GTK_CONTAINER (tree_view), column->button);
9252   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9253   gtk_widget_set_parent (column->button, GTK_WIDGET (tree_view));
9254   g_object_unref (column->button);
9255
9256   tree_view->priv->drag_column_x = column->button->allocation.x;
9257   allocation = column->button->allocation;
9258   allocation.x = 0;
9259   gtk_widget_size_allocate (column->button, &allocation);
9260   gtk_widget_set_parent_window (column->button, tree_view->priv->drag_window);
9261
9262   tree_view->priv->drag_column = column;
9263   gdk_window_show (tree_view->priv->drag_window);
9264
9265   gdk_window_get_origin (tree_view->priv->header_window, &x, &y);
9266   gdk_drawable_get_size (tree_view->priv->header_window, &width, &height);
9267
9268   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9269   while (gtk_events_pending ())
9270     gtk_main_iteration ();
9271
9272   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IN_COLUMN_DRAG);
9273   gdk_pointer_grab (tree_view->priv->drag_window,
9274                     FALSE,
9275                     GDK_POINTER_MOTION_MASK|GDK_BUTTON_RELEASE_MASK,
9276                     NULL, NULL, GDK_CURRENT_TIME);
9277   gdk_keyboard_grab (tree_view->priv->drag_window,
9278                      FALSE,
9279                      GDK_CURRENT_TIME);
9280 }
9281
9282 static void
9283 gtk_tree_view_queue_draw_arrow (GtkTreeView        *tree_view,
9284                                 GtkRBTree          *tree,
9285                                 GtkRBNode          *node,
9286                                 const GdkRectangle *clip_rect)
9287 {
9288   GdkRectangle rect;
9289
9290   if (!GTK_WIDGET_REALIZED (tree_view))
9291     return;
9292
9293   rect.x = 0;
9294   rect.width = MAX (tree_view->priv->expander_size, MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width));
9295
9296   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9297   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9298
9299   if (clip_rect)
9300     {
9301       GdkRectangle new_rect;
9302
9303       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9304
9305       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9306     }
9307   else
9308     {
9309       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9310     }
9311 }
9312
9313 void
9314 _gtk_tree_view_queue_draw_node (GtkTreeView        *tree_view,
9315                                 GtkRBTree          *tree,
9316                                 GtkRBNode          *node,
9317                                 const GdkRectangle *clip_rect)
9318 {
9319   GdkRectangle rect;
9320
9321   if (!GTK_WIDGET_REALIZED (tree_view))
9322     return;
9323
9324   rect.x = 0;
9325   rect.width = MAX (tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.width);
9326
9327   rect.y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
9328   rect.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
9329
9330   if (clip_rect)
9331     {
9332       GdkRectangle new_rect;
9333
9334       gdk_rectangle_intersect (clip_rect, &rect, &new_rect);
9335
9336       gdk_window_invalidate_rect (tree_view->priv->bin_window, &new_rect, TRUE);
9337     }
9338   else
9339     {
9340       gdk_window_invalidate_rect (tree_view->priv->bin_window, &rect, TRUE);
9341     }
9342 }
9343
9344 static void
9345 gtk_tree_view_queue_draw_path (GtkTreeView        *tree_view,
9346                                GtkTreePath        *path,
9347                                const GdkRectangle *clip_rect)
9348 {
9349   GtkRBTree *tree = NULL;
9350   GtkRBNode *node = NULL;
9351
9352   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
9353
9354   if (tree)
9355     _gtk_tree_view_queue_draw_node (tree_view, tree, node, clip_rect);
9356 }
9357
9358 /* x and y are the mouse position
9359  */
9360 static void
9361 gtk_tree_view_draw_arrow (GtkTreeView *tree_view,
9362                           GtkRBTree   *tree,
9363                           GtkRBNode   *node,
9364                           /* in bin_window coordinates */
9365                           gint         x,
9366                           gint         y)
9367 {
9368   GdkRectangle area;
9369   GtkStateType state;
9370   GtkWidget *widget;
9371   gint x_offset = 0;
9372   gint x2;
9373   gint vertical_separator;
9374   gint expander_size;
9375   GtkExpanderStyle expander_style;
9376
9377   gtk_widget_style_get (GTK_WIDGET (tree_view),
9378                         "vertical-separator", &vertical_separator,
9379                         NULL);
9380   expander_size = tree_view->priv->expander_size - EXPANDER_EXTRA_PADDING;
9381
9382   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
9383     return;
9384
9385   widget = GTK_WIDGET (tree_view);
9386
9387   gtk_tree_view_get_arrow_xrange (tree_view, tree, &x_offset, &x2);
9388
9389   area.x = x_offset;
9390   area.y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
9391   area.width = expander_size + 2;
9392   area.height = MAX (CELL_HEIGHT (node, vertical_separator), (expander_size - vertical_separator));
9393
9394   if (GTK_WIDGET_STATE (tree_view) == GTK_STATE_INSENSITIVE)
9395     {
9396       state = GTK_STATE_INSENSITIVE;
9397     }
9398   else if (node == tree_view->priv->button_pressed_node)
9399     {
9400       if (x >= area.x && x <= (area.x + area.width) &&
9401           y >= area.y && y <= (area.y + area.height))
9402         state = GTK_STATE_ACTIVE;
9403       else
9404         state = GTK_STATE_NORMAL;
9405     }
9406   else
9407     {
9408       if (node == tree_view->priv->prelight_node &&
9409           GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_ARROW_PRELIT))
9410         state = GTK_STATE_PRELIGHT;
9411       else
9412         state = GTK_STATE_NORMAL;
9413     }
9414
9415   if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
9416     expander_style = GTK_EXPANDER_SEMI_EXPANDED;
9417   else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
9418     expander_style = GTK_EXPANDER_SEMI_COLLAPSED;
9419   else if (node->children != NULL)
9420     expander_style = GTK_EXPANDER_EXPANDED;
9421   else
9422     expander_style = GTK_EXPANDER_COLLAPSED;
9423
9424   gtk_paint_expander (widget->style,
9425                       tree_view->priv->bin_window,
9426                       state,
9427                       &area,
9428                       widget,
9429                       "treeview",
9430                       area.x + area.width / 2,
9431                       area.y + area.height / 2,
9432                       expander_style);
9433 }
9434
9435 static void
9436 gtk_tree_view_focus_to_cursor (GtkTreeView *tree_view)
9437
9438 {
9439   GtkTreePath *cursor_path;
9440
9441   if ((tree_view->priv->tree == NULL) ||
9442       (! GTK_WIDGET_REALIZED (tree_view)))
9443     return;
9444
9445   cursor_path = NULL;
9446   if (tree_view->priv->cursor)
9447     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9448
9449   if (cursor_path == NULL)
9450     {
9451       /* Consult the selection before defaulting to the
9452        * first focusable element
9453        */
9454       GList *selected_rows;
9455       GtkTreeModel *model;
9456       GtkTreeSelection *selection;
9457
9458       selection = gtk_tree_view_get_selection (tree_view);
9459       selected_rows = gtk_tree_selection_get_selected_rows (selection, &model);
9460
9461       if (selected_rows)
9462         {
9463           cursor_path = gtk_tree_path_copy((const GtkTreePath *)(selected_rows->data));
9464           g_list_foreach (selected_rows, (GFunc)gtk_tree_path_free, NULL);
9465           g_list_free (selected_rows);
9466         }
9467       else
9468         {
9469           cursor_path = gtk_tree_path_new_first ();
9470           search_first_focusable_path (tree_view, &cursor_path,
9471                                        TRUE, NULL, NULL);
9472         }
9473
9474       gtk_tree_row_reference_free (tree_view->priv->cursor);
9475       tree_view->priv->cursor = NULL;
9476
9477       if (cursor_path)
9478         {
9479           if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE)
9480             gtk_tree_view_real_set_cursor (tree_view, cursor_path, FALSE, FALSE);
9481           else
9482             gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9483         }
9484     }
9485
9486   if (cursor_path)
9487     {
9488       GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
9489
9490       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
9491       gtk_tree_path_free (cursor_path);
9492
9493       if (tree_view->priv->focus_column == NULL)
9494         {
9495           GList *list;
9496           for (list = tree_view->priv->columns; list; list = list->next)
9497             {
9498               if (GTK_TREE_VIEW_COLUMN (list->data)->visible)
9499                 {
9500                   tree_view->priv->focus_column = GTK_TREE_VIEW_COLUMN (list->data);
9501                   break;
9502                 }
9503             }
9504         }
9505     }
9506 }
9507
9508 static void
9509 gtk_tree_view_move_cursor_up_down (GtkTreeView *tree_view,
9510                                    gint         count)
9511 {
9512   gint selection_count;
9513   GtkRBTree *cursor_tree = NULL;
9514   GtkRBNode *cursor_node = NULL;
9515   GtkRBTree *new_cursor_tree = NULL;
9516   GtkRBNode *new_cursor_node = NULL;
9517   GtkTreePath *cursor_path = NULL;
9518   gboolean grab_focus = TRUE;
9519   gboolean selectable;
9520
9521   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9522     return;
9523
9524   cursor_path = NULL;
9525   if (!gtk_tree_row_reference_valid (tree_view->priv->cursor))
9526     /* FIXME: we lost the cursor; should we get the first? */
9527     return;
9528
9529   cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9530   _gtk_tree_view_find_node (tree_view, cursor_path,
9531                             &cursor_tree, &cursor_node);
9532
9533   if (cursor_tree == NULL)
9534     /* FIXME: we lost the cursor; should we get the first? */
9535     return;
9536
9537   selection_count = gtk_tree_selection_count_selected_rows (tree_view->priv->selection);
9538   selectable = _gtk_tree_selection_row_is_selectable (tree_view->priv->selection,
9539                                                       cursor_node,
9540                                                       cursor_path);
9541
9542   if (selection_count == 0
9543       && tree_view->priv->selection->type != GTK_SELECTION_NONE
9544       && !tree_view->priv->ctrl_pressed
9545       && selectable)
9546     {
9547       /* Don't move the cursor, but just select the current node */
9548       new_cursor_tree = cursor_tree;
9549       new_cursor_node = cursor_node;
9550     }
9551   else
9552     {
9553       if (count == -1)
9554         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9555                                &new_cursor_tree, &new_cursor_node);
9556       else
9557         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9558                                &new_cursor_tree, &new_cursor_node);
9559     }
9560
9561   gtk_tree_path_free (cursor_path);
9562
9563   if (new_cursor_node)
9564     {
9565       cursor_path = _gtk_tree_view_find_path (tree_view,
9566                                               new_cursor_tree, new_cursor_node);
9567
9568       search_first_focusable_path (tree_view, &cursor_path,
9569                                    (count != -1),
9570                                    &new_cursor_tree,
9571                                    &new_cursor_node);
9572
9573       if (cursor_path)
9574         gtk_tree_path_free (cursor_path);
9575     }
9576
9577   /*
9578    * If the list has only one item and multi-selection is set then select
9579    * the row (if not yet selected).
9580    */
9581   if (tree_view->priv->selection->type == GTK_SELECTION_MULTIPLE &&
9582       new_cursor_node == NULL)
9583     {
9584       if (count == -1)
9585         _gtk_rbtree_next_full (cursor_tree, cursor_node,
9586                                &new_cursor_tree, &new_cursor_node);
9587       else
9588         _gtk_rbtree_prev_full (cursor_tree, cursor_node,
9589                                &new_cursor_tree, &new_cursor_node);
9590
9591       if (new_cursor_node == NULL
9592           && !GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_SELECTED))
9593         {
9594           new_cursor_node = cursor_node;
9595           new_cursor_tree = cursor_tree;
9596         }
9597       else
9598         {
9599           new_cursor_node = NULL;
9600         }
9601     }
9602
9603   if (new_cursor_node)
9604     {
9605       cursor_path = _gtk_tree_view_find_path (tree_view, new_cursor_tree, new_cursor_node);
9606       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, TRUE);
9607       gtk_tree_path_free (cursor_path);
9608     }
9609   else
9610     {
9611       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9612
9613       if (!tree_view->priv->shift_pressed)
9614         {
9615           if (! gtk_widget_keynav_failed (GTK_WIDGET (tree_view),
9616                                           count < 0 ?
9617                                           GTK_DIR_UP : GTK_DIR_DOWN))
9618             {
9619               GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
9620
9621               if (toplevel)
9622                 gtk_widget_child_focus (toplevel,
9623                                         count < 0 ?
9624                                         GTK_DIR_TAB_BACKWARD :
9625                                         GTK_DIR_TAB_FORWARD);
9626
9627               grab_focus = FALSE;
9628             }
9629         }
9630       else
9631         {
9632           gtk_widget_error_bell (GTK_WIDGET (tree_view));
9633         }
9634     }
9635
9636   if (grab_focus)
9637     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9638 }
9639
9640 static void
9641 gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
9642                                         gint         count)
9643 {
9644   GtkRBTree *cursor_tree = NULL;
9645   GtkRBNode *cursor_node = NULL;
9646   GtkTreePath *old_cursor_path = NULL;
9647   GtkTreePath *cursor_path = NULL;
9648   GtkRBTree *start_cursor_tree = NULL;
9649   GtkRBNode *start_cursor_node = NULL;
9650   gint y;
9651   gint window_y;
9652   gint vertical_separator;
9653
9654   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9655     return;
9656
9657   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9658     old_cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9659   else
9660     /* This is sorta weird.  Focus in should give us a cursor */
9661     return;
9662
9663   gtk_widget_style_get (GTK_WIDGET (tree_view), "vertical-separator", &vertical_separator, NULL);
9664   _gtk_tree_view_find_node (tree_view, old_cursor_path,
9665                             &cursor_tree, &cursor_node);
9666
9667   if (cursor_tree == NULL)
9668     {
9669       /* FIXME: we lost the cursor.  Should we try to get one? */
9670       gtk_tree_path_free (old_cursor_path);
9671       return;
9672     }
9673   g_return_if_fail (cursor_node != NULL);
9674
9675   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9676   window_y = RBTREE_Y_TO_TREE_WINDOW_Y (tree_view, y);
9677   y += tree_view->priv->cursor_offset;
9678   y += count * (int)tree_view->priv->vadjustment->page_increment;
9679   y = CLAMP (y, (gint)tree_view->priv->vadjustment->lower,  (gint)tree_view->priv->vadjustment->upper - vertical_separator);
9680
9681   if (y >= tree_view->priv->height)
9682     y = tree_view->priv->height - 1;
9683
9684   tree_view->priv->cursor_offset =
9685     _gtk_rbtree_find_offset (tree_view->priv->tree, y,
9686                              &cursor_tree, &cursor_node);
9687
9688   if (tree_view->priv->cursor_offset > BACKGROUND_HEIGHT (cursor_node))
9689     {
9690       _gtk_rbtree_next_full (cursor_tree, cursor_node,
9691                              &cursor_tree, &cursor_node);
9692       tree_view->priv->cursor_offset -= BACKGROUND_HEIGHT (cursor_node);
9693     }
9694
9695   y -= tree_view->priv->cursor_offset;
9696   cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9697
9698   start_cursor_tree = cursor_tree;
9699   start_cursor_node = cursor_node;
9700
9701   if (! search_first_focusable_path (tree_view, &cursor_path,
9702                                      (count != -1),
9703                                      &cursor_tree, &cursor_node))
9704     {
9705       /* It looks like we reached the end of the view without finding
9706        * a focusable row.  We will step backwards to find the last
9707        * focusable row.
9708        */
9709       cursor_tree = start_cursor_tree;
9710       cursor_node = start_cursor_node;
9711       cursor_path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9712
9713       search_first_focusable_path (tree_view, &cursor_path,
9714                                    (count == -1),
9715                                    &cursor_tree, &cursor_node);
9716     }
9717
9718   if (!cursor_path)
9719     goto cleanup;
9720
9721   /* update y */
9722   y = _gtk_rbtree_node_find_offset (cursor_tree, cursor_node);
9723
9724   gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
9725
9726   y -= window_y;
9727   gtk_tree_view_scroll_to_point (tree_view, -1, y);
9728   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9729   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9730
9731   if (!gtk_tree_path_compare (old_cursor_path, cursor_path))
9732     gtk_widget_error_bell (GTK_WIDGET (tree_view));
9733
9734 cleanup:
9735   gtk_tree_path_free (old_cursor_path);
9736   gtk_tree_path_free (cursor_path);
9737 }
9738
9739 static void
9740 gtk_tree_view_move_cursor_left_right (GtkTreeView *tree_view,
9741                                       gint         count)
9742 {
9743   GtkRBTree *cursor_tree = NULL;
9744   GtkRBNode *cursor_node = NULL;
9745   GtkTreePath *cursor_path = NULL;
9746   GtkTreeViewColumn *column;
9747   GtkTreeIter iter;
9748   GList *list;
9749   gboolean found_column = FALSE;
9750   gboolean rtl;
9751
9752   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
9753
9754   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9755     return;
9756
9757   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
9758     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9759   else
9760     return;
9761
9762   _gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node);
9763   if (cursor_tree == NULL)
9764     return;
9765   if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path) == FALSE)
9766     {
9767       gtk_tree_path_free (cursor_path);
9768       return;
9769     }
9770   gtk_tree_path_free (cursor_path);
9771
9772   list = rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns);
9773   if (tree_view->priv->focus_column)
9774     {
9775       for (; list; list = (rtl ? list->prev : list->next))
9776         {
9777           if (list->data == tree_view->priv->focus_column)
9778             break;
9779         }
9780     }
9781
9782   while (list)
9783     {
9784       gboolean left, right;
9785
9786       column = list->data;
9787       if (column->visible == FALSE)
9788         goto loop_end;
9789
9790       gtk_tree_view_column_cell_set_cell_data (column,
9791                                                tree_view->priv->model,
9792                                                &iter,
9793                                                GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
9794                                                cursor_node->children?TRUE:FALSE);
9795
9796       if (rtl)
9797         {
9798           right = list->prev ? TRUE : FALSE;
9799           left = list->next ? TRUE : FALSE;
9800         }
9801       else
9802         {
9803           left = list->prev ? TRUE : FALSE;
9804           right = list->next ? TRUE : FALSE;
9805         }
9806
9807       if (_gtk_tree_view_column_cell_focus (column, count, left, right))
9808         {
9809           tree_view->priv->focus_column = column;
9810           found_column = TRUE;
9811           break;
9812         }
9813     loop_end:
9814       if (count == 1)
9815         list = rtl ? list->prev : list->next;
9816       else
9817         list = rtl ? list->next : list->prev;
9818     }
9819
9820   if (found_column)
9821     {
9822       if (!gtk_tree_view_has_special_cell (tree_view))
9823         _gtk_tree_view_queue_draw_node (tree_view,
9824                                         cursor_tree,
9825                                         cursor_node,
9826                                         NULL);
9827       g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
9828     }
9829   else
9830     {
9831       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9832     }
9833
9834   gtk_tree_view_clamp_column_visible (tree_view,
9835                                       tree_view->priv->focus_column, TRUE);
9836 }
9837
9838 static void
9839 gtk_tree_view_move_cursor_start_end (GtkTreeView *tree_view,
9840                                      gint         count)
9841 {
9842   GtkRBTree *cursor_tree;
9843   GtkRBNode *cursor_node;
9844   GtkTreePath *path;
9845   GtkTreePath *old_path;
9846
9847   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9848     return;
9849
9850   g_return_if_fail (tree_view->priv->tree != NULL);
9851
9852   gtk_tree_view_get_cursor (tree_view, &old_path, NULL);
9853
9854   cursor_tree = tree_view->priv->tree;
9855   cursor_node = cursor_tree->root;
9856
9857   if (count == -1)
9858     {
9859       while (cursor_node && cursor_node->left != cursor_tree->nil)
9860         cursor_node = cursor_node->left;
9861
9862       /* Now go forward to find the first focusable row. */
9863       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9864       search_first_focusable_path (tree_view, &path,
9865                                    TRUE, &cursor_tree, &cursor_node);
9866     }
9867   else
9868     {
9869       do
9870         {
9871           while (cursor_node && cursor_node->right != cursor_tree->nil)
9872             cursor_node = cursor_node->right;
9873           if (cursor_node->children == NULL)
9874             break;
9875
9876           cursor_tree = cursor_node->children;
9877           cursor_node = cursor_tree->root;
9878         }
9879       while (1);
9880
9881       /* Now go backwards to find last focusable row. */
9882       path = _gtk_tree_view_find_path (tree_view, cursor_tree, cursor_node);
9883       search_first_focusable_path (tree_view, &path,
9884                                    FALSE, &cursor_tree, &cursor_node);
9885     }
9886
9887   if (!path)
9888     goto cleanup;
9889
9890   if (gtk_tree_path_compare (old_path, path))
9891     {
9892       gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
9893     }
9894   else
9895     {
9896       gtk_widget_error_bell (GTK_WIDGET (tree_view));
9897     }
9898
9899 cleanup:
9900   gtk_tree_path_free (old_path);
9901   gtk_tree_path_free (path);
9902 }
9903
9904 static gboolean
9905 gtk_tree_view_real_select_all (GtkTreeView *tree_view)
9906 {
9907   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9908     return FALSE;
9909
9910   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
9911     return FALSE;
9912
9913   gtk_tree_selection_select_all (tree_view->priv->selection);
9914
9915   return TRUE;
9916 }
9917
9918 static gboolean
9919 gtk_tree_view_real_unselect_all (GtkTreeView *tree_view)
9920 {
9921   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9922     return FALSE;
9923
9924   if (tree_view->priv->selection->type != GTK_SELECTION_MULTIPLE)
9925     return FALSE;
9926
9927   gtk_tree_selection_unselect_all (tree_view->priv->selection);
9928
9929   return TRUE;
9930 }
9931
9932 static gboolean
9933 gtk_tree_view_real_select_cursor_row (GtkTreeView *tree_view,
9934                                       gboolean     start_editing)
9935 {
9936   GtkRBTree *new_tree = NULL;
9937   GtkRBNode *new_node = NULL;
9938   GtkRBTree *cursor_tree = NULL;
9939   GtkRBNode *cursor_node = NULL;
9940   GtkTreePath *cursor_path = NULL;
9941   GtkTreeSelectMode mode = 0;
9942
9943   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
9944     return FALSE;
9945
9946   if (tree_view->priv->cursor)
9947     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
9948
9949   if (cursor_path == NULL)
9950     return FALSE;
9951
9952   _gtk_tree_view_find_node (tree_view, cursor_path,
9953                             &cursor_tree, &cursor_node);
9954
9955   if (cursor_tree == NULL)
9956     {
9957       gtk_tree_path_free (cursor_path);
9958       return FALSE;
9959     }
9960
9961   if (!tree_view->priv->shift_pressed && start_editing &&
9962       tree_view->priv->focus_column)
9963     {
9964       if (gtk_tree_view_start_editing (tree_view, cursor_path))
9965         {
9966           gtk_tree_path_free (cursor_path);
9967           return TRUE;
9968         }
9969     }
9970
9971   if (tree_view->priv->ctrl_pressed)
9972     mode |= GTK_TREE_SELECT_MODE_TOGGLE;
9973   if (tree_view->priv->shift_pressed)
9974     mode |= GTK_TREE_SELECT_MODE_EXTEND;
9975
9976   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
9977                                             cursor_node,
9978                                             cursor_tree,
9979                                             cursor_path,
9980                                             mode,
9981                                             FALSE);
9982
9983   /* We bail out if the original (tree, node) don't exist anymore after
9984    * handling the selection-changed callback.  We do return TRUE because
9985    * the key press has been handled at this point.
9986    */
9987   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
9988
9989   if (cursor_tree != new_tree || cursor_node != new_node)
9990     return FALSE;
9991
9992   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
9993
9994   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
9995   _gtk_tree_view_queue_draw_node (tree_view, cursor_tree, cursor_node, NULL);
9996
9997   if (!tree_view->priv->shift_pressed)
9998     gtk_tree_view_row_activated (tree_view, cursor_path,
9999                                  tree_view->priv->focus_column);
10000
10001   gtk_tree_path_free (cursor_path);
10002
10003   return TRUE;
10004 }
10005
10006 static gboolean
10007 gtk_tree_view_real_toggle_cursor_row (GtkTreeView *tree_view)
10008 {
10009   GtkRBTree *new_tree = NULL;
10010   GtkRBNode *new_node = NULL;
10011   GtkRBTree *cursor_tree = NULL;
10012   GtkRBNode *cursor_node = NULL;
10013   GtkTreePath *cursor_path = NULL;
10014
10015   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10016     return FALSE;
10017
10018   cursor_path = NULL;
10019   if (tree_view->priv->cursor)
10020     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10021
10022   if (cursor_path == NULL)
10023     return FALSE;
10024
10025   _gtk_tree_view_find_node (tree_view, cursor_path,
10026                             &cursor_tree, &cursor_node);
10027   if (cursor_tree == NULL)
10028     {
10029       gtk_tree_path_free (cursor_path);
10030       return FALSE;
10031     }
10032
10033   _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
10034                                             cursor_node,
10035                                             cursor_tree,
10036                                             cursor_path,
10037                                             GTK_TREE_SELECT_MODE_TOGGLE,
10038                                             FALSE);
10039
10040   /* We bail out if the original (tree, node) don't exist anymore after
10041    * handling the selection-changed callback.  We do return TRUE because
10042    * the key press has been handled at this point.
10043    */
10044   _gtk_tree_view_find_node (tree_view, cursor_path, &new_tree, &new_node);
10045
10046   if (cursor_tree != new_tree || cursor_node != new_node)
10047     return FALSE;
10048
10049   gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10050
10051   gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10052   gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10053   gtk_tree_path_free (cursor_path);
10054
10055   return TRUE;
10056 }
10057
10058 static gboolean
10059 gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView *tree_view,
10060                                                gboolean     logical,
10061                                                gboolean     expand,
10062                                                gboolean     open_all)
10063 {
10064   GtkTreePath *cursor_path = NULL;
10065   GtkRBTree *tree;
10066   GtkRBNode *node;
10067
10068   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10069     return FALSE;
10070
10071   cursor_path = NULL;
10072   if (tree_view->priv->cursor)
10073     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10074
10075   if (cursor_path == NULL)
10076     return FALSE;
10077
10078   if (_gtk_tree_view_find_node (tree_view, cursor_path, &tree, &node))
10079     return FALSE;
10080
10081   /* Don't handle the event if we aren't an expander */
10082   if (!((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT))
10083     return FALSE;
10084
10085   if (!logical
10086       && gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL)
10087     expand = !expand;
10088
10089   if (expand)
10090     gtk_tree_view_real_expand_row (tree_view, cursor_path, tree, node, open_all, TRUE);
10091   else
10092     gtk_tree_view_real_collapse_row (tree_view, cursor_path, tree, node, TRUE);
10093
10094   gtk_tree_path_free (cursor_path);
10095
10096   return TRUE;
10097 }
10098
10099 static gboolean
10100 gtk_tree_view_real_select_cursor_parent (GtkTreeView *tree_view)
10101 {
10102   GtkRBTree *cursor_tree = NULL;
10103   GtkRBNode *cursor_node = NULL;
10104   GtkTreePath *cursor_path = NULL;
10105   GdkModifierType state;
10106
10107   if (! GTK_WIDGET_HAS_FOCUS (tree_view))
10108     goto out;
10109
10110   cursor_path = NULL;
10111   if (tree_view->priv->cursor)
10112     cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
10113
10114   if (cursor_path == NULL)
10115     goto out;
10116
10117   _gtk_tree_view_find_node (tree_view, cursor_path,
10118                             &cursor_tree, &cursor_node);
10119   if (cursor_tree == NULL)
10120     {
10121       gtk_tree_path_free (cursor_path);
10122       goto out;
10123     }
10124
10125   if (cursor_tree->parent_node)
10126     {
10127       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10128       cursor_node = cursor_tree->parent_node;
10129       cursor_tree = cursor_tree->parent_tree;
10130
10131       gtk_tree_path_up (cursor_path);
10132
10133       if (gtk_get_current_event_state (&state))
10134         {
10135           if ((state & GDK_CONTROL_MASK) == GDK_CONTROL_MASK)
10136             tree_view->priv->ctrl_pressed = TRUE;
10137         }
10138
10139       gtk_tree_view_real_set_cursor (tree_view, cursor_path, TRUE, FALSE);
10140       gtk_tree_view_clamp_node_visible (tree_view, cursor_tree, cursor_node);
10141
10142       gtk_widget_grab_focus (GTK_WIDGET (tree_view));
10143       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
10144       gtk_tree_path_free (cursor_path);
10145
10146       tree_view->priv->ctrl_pressed = FALSE;
10147
10148       return TRUE;
10149     }
10150
10151  out:
10152
10153   tree_view->priv->search_entry_avoid_unhandled_binding = TRUE;
10154   return FALSE;
10155 }
10156
10157 static gboolean
10158 gtk_tree_view_search_entry_flush_timeout (GtkTreeView *tree_view)
10159 {
10160   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window, tree_view);
10161   tree_view->priv->typeselect_flush_timeout = 0;
10162
10163   return FALSE;
10164 }
10165
10166 /* Cut and paste from gtkwindow.c */
10167 static void
10168 send_focus_change (GtkWidget *widget,
10169                    gboolean   in)
10170 {
10171   GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
10172
10173   g_object_ref (widget);
10174
10175  if (in)
10176     GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
10177   else
10178     GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
10179
10180   fevent->focus_change.type = GDK_FOCUS_CHANGE;
10181   fevent->focus_change.window = g_object_ref (widget->window);
10182   fevent->focus_change.in = in;
10183
10184   gtk_widget_event (widget, fevent);
10185
10186   g_object_notify (G_OBJECT (widget), "has-focus");
10187
10188   g_object_unref (widget);
10189   gdk_event_free (fevent);
10190 }
10191
10192 static void
10193 gtk_tree_view_ensure_interactive_directory (GtkTreeView *tree_view)
10194 {
10195   GtkWidget *frame, *vbox, *toplevel;
10196   GdkScreen *screen;
10197
10198   if (tree_view->priv->search_custom_entry_set)
10199     return;
10200
10201   toplevel = gtk_widget_get_toplevel (GTK_WIDGET (tree_view));
10202   screen = gtk_widget_get_screen (GTK_WIDGET (tree_view));
10203
10204    if (tree_view->priv->search_window != NULL)
10205      {
10206        if (GTK_WINDOW (toplevel)->group)
10207          gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10208                                       GTK_WINDOW (tree_view->priv->search_window));
10209        else if (GTK_WINDOW (tree_view->priv->search_window)->group)
10210          gtk_window_group_remove_window (GTK_WINDOW (tree_view->priv->search_window)->group,
10211                                          GTK_WINDOW (tree_view->priv->search_window));
10212        gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10213        return;
10214      }
10215
10216   tree_view->priv->search_window = gtk_window_new (GTK_WINDOW_POPUP);
10217   gtk_window_set_screen (GTK_WINDOW (tree_view->priv->search_window), screen);
10218
10219   if (GTK_WINDOW (toplevel)->group)
10220     gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
10221                                  GTK_WINDOW (tree_view->priv->search_window));
10222
10223   gtk_window_set_type_hint (GTK_WINDOW (tree_view->priv->search_window),
10224                             GDK_WINDOW_TYPE_HINT_UTILITY);
10225   gtk_window_set_modal (GTK_WINDOW (tree_view->priv->search_window), TRUE);
10226   g_signal_connect (tree_view->priv->search_window, "delete-event",
10227                     G_CALLBACK (gtk_tree_view_search_delete_event),
10228                     tree_view);
10229   g_signal_connect (tree_view->priv->search_window, "key-press-event",
10230                     G_CALLBACK (gtk_tree_view_search_key_press_event),
10231                     tree_view);
10232   g_signal_connect (tree_view->priv->search_window, "button-press-event",
10233                     G_CALLBACK (gtk_tree_view_search_button_press_event),
10234                     tree_view);
10235   g_signal_connect (tree_view->priv->search_window, "scroll-event",
10236                     G_CALLBACK (gtk_tree_view_search_scroll_event),
10237                     tree_view);
10238
10239   frame = gtk_frame_new (NULL);
10240   gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
10241   gtk_widget_show (frame);
10242   gtk_container_add (GTK_CONTAINER (tree_view->priv->search_window), frame);
10243
10244   vbox = gtk_vbox_new (FALSE, 0);
10245   gtk_widget_show (vbox);
10246   gtk_container_add (GTK_CONTAINER (frame), vbox);
10247   gtk_container_set_border_width (GTK_CONTAINER (vbox), 3);
10248
10249   /* add entry */
10250   tree_view->priv->search_entry = gtk_entry_new ();
10251   gtk_widget_show (tree_view->priv->search_entry);
10252   g_signal_connect (tree_view->priv->search_entry, "populate-popup",
10253                     G_CALLBACK (gtk_tree_view_search_disable_popdown),
10254                     tree_view);
10255   g_signal_connect (tree_view->priv->search_entry,
10256                     "activate", G_CALLBACK (gtk_tree_view_search_activate),
10257                     tree_view);
10258   g_signal_connect (GTK_ENTRY (tree_view->priv->search_entry)->im_context,
10259                     "preedit-changed",
10260                     G_CALLBACK (gtk_tree_view_search_preedit_changed),
10261                     tree_view);
10262   gtk_container_add (GTK_CONTAINER (vbox),
10263                      tree_view->priv->search_entry);
10264
10265   gtk_widget_realize (tree_view->priv->search_entry);
10266 }
10267
10268 /* Pops up the interactive search entry.  If keybinding is TRUE then the user
10269  * started this by typing the start_interactive_search keybinding.  Otherwise, it came from
10270  */
10271 static gboolean
10272 gtk_tree_view_real_start_interactive_search (GtkTreeView *tree_view,
10273                                              gboolean     keybinding)
10274 {
10275   /* We only start interactive search if we have focus or the columns
10276    * have focus.  If one of our children have focus, we don't want to
10277    * start the search.
10278    */
10279   GList *list;
10280   gboolean found_focus = FALSE;
10281   GtkWidgetClass *entry_parent_class;
10282
10283   if (!tree_view->priv->enable_search && !keybinding)
10284     return FALSE;
10285
10286   if (tree_view->priv->search_custom_entry_set)
10287     return FALSE;
10288
10289   if (tree_view->priv->search_window != NULL &&
10290       GTK_WIDGET_VISIBLE (tree_view->priv->search_window))
10291     return TRUE;
10292
10293   for (list = tree_view->priv->columns; list; list = list->next)
10294     {
10295       GtkTreeViewColumn *column;
10296
10297       column = list->data;
10298       if (! column->visible)
10299         continue;
10300
10301       if (GTK_WIDGET_HAS_FOCUS (column->button))
10302         {
10303           found_focus = TRUE;
10304           break;
10305         }
10306     }
10307
10308   if (GTK_WIDGET_HAS_FOCUS (tree_view))
10309     found_focus = TRUE;
10310
10311   if (!found_focus)
10312     return FALSE;
10313
10314   if (tree_view->priv->search_column < 0)
10315     return FALSE;
10316
10317   gtk_tree_view_ensure_interactive_directory (tree_view);
10318
10319   if (keybinding)
10320     gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
10321
10322   /* done, show it */
10323   tree_view->priv->search_position_func (tree_view, tree_view->priv->search_window, tree_view->priv->search_position_user_data);
10324   gtk_widget_show (tree_view->priv->search_window);
10325   if (tree_view->priv->search_entry_changed_id == 0)
10326     {
10327       tree_view->priv->search_entry_changed_id =
10328         g_signal_connect (tree_view->priv->search_entry, "changed",
10329                           G_CALLBACK (gtk_tree_view_search_init),
10330                           tree_view);
10331     }
10332
10333   tree_view->priv->typeselect_flush_timeout =
10334     gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
10335                    (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
10336                    tree_view);
10337
10338   /* Grab focus will select all the text.  We don't want that to happen, so we
10339    * call the parent instance and bypass the selection change.  This is probably
10340    * really non-kosher. */
10341   entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (tree_view->priv->search_entry));
10342   (entry_parent_class->grab_focus) (tree_view->priv->search_entry);
10343
10344   /* send focus-in event */
10345   send_focus_change (tree_view->priv->search_entry, TRUE);
10346
10347   /* search first matching iter */
10348   gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
10349
10350   return TRUE;
10351 }
10352
10353 static gboolean
10354 gtk_tree_view_start_interactive_search (GtkTreeView *tree_view)
10355 {
10356   return gtk_tree_view_real_start_interactive_search (tree_view, TRUE);
10357 }
10358
10359 /* this function returns the new width of the column being resized given
10360  * the column and x position of the cursor; the x cursor position is passed
10361  * in as a pointer and automagicly corrected if it's beyond min/max limits
10362  */
10363 static gint
10364 gtk_tree_view_new_column_width (GtkTreeView *tree_view,
10365                                 gint       i,
10366                                 gint      *x)
10367 {
10368   GtkTreeViewColumn *column;
10369   gint width;
10370   gboolean rtl;
10371
10372   /* first translate the x position from widget->window
10373    * to clist->clist_window
10374    */
10375   rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
10376   column = g_list_nth (tree_view->priv->columns, i)->data;
10377   width = rtl ? (column->button->allocation.x + column->button->allocation.width - *x) : (*x - column->button->allocation.x);
10378
10379   /* Clamp down the value */
10380   if (column->min_width == -1)
10381     width = MAX (column->button->requisition.width,
10382                  width);
10383   else
10384     width = MAX (column->min_width,
10385                  width);
10386   if (column->max_width != -1)
10387     width = MIN (width, column->max_width);
10388
10389   *x = rtl ? (column->button->allocation.x + column->button->allocation.width - width) : (column->button->allocation.x + width);
10390
10391   return width;
10392 }
10393
10394
10395 /* FIXME this adjust_allocation is a big cut-and-paste from
10396  * GtkCList, needs to be some "official" way to do this
10397  * factored out.
10398  */
10399 typedef struct
10400 {
10401   GdkWindow *window;
10402   int dx;
10403   int dy;
10404 } ScrollData;
10405
10406 /* The window to which widget->window is relative */
10407 #define ALLOCATION_WINDOW(widget)               \
10408    (GTK_WIDGET_NO_WINDOW (widget) ?             \
10409     (widget)->window :                          \
10410      gdk_window_get_parent ((widget)->window))
10411
10412 static void
10413 adjust_allocation_recurse (GtkWidget *widget,
10414                            gpointer   data)
10415 {
10416   ScrollData *scroll_data = data;
10417
10418   /* Need to really size allocate instead of just poking
10419    * into widget->allocation if the widget is not realized.
10420    * FIXME someone figure out why this was.
10421    */
10422   if (!GTK_WIDGET_REALIZED (widget))
10423     {
10424       if (GTK_WIDGET_VISIBLE (widget))
10425         {
10426           GdkRectangle tmp_rectangle = widget->allocation;
10427           tmp_rectangle.x += scroll_data->dx;
10428           tmp_rectangle.y += scroll_data->dy;
10429
10430           gtk_widget_size_allocate (widget, &tmp_rectangle);
10431         }
10432     }
10433   else
10434     {
10435       if (ALLOCATION_WINDOW (widget) == scroll_data->window)
10436         {
10437           widget->allocation.x += scroll_data->dx;
10438           widget->allocation.y += scroll_data->dy;
10439
10440           if (GTK_IS_CONTAINER (widget))
10441             gtk_container_forall (GTK_CONTAINER (widget),
10442                                   adjust_allocation_recurse,
10443                                   data);
10444         }
10445     }
10446 }
10447
10448 static void
10449 adjust_allocation (GtkWidget *widget,
10450                    int        dx,
10451                    int        dy)
10452 {
10453   ScrollData scroll_data;
10454
10455   if (GTK_WIDGET_REALIZED (widget))
10456     scroll_data.window = ALLOCATION_WINDOW (widget);
10457   else
10458     scroll_data.window = NULL;
10459
10460   scroll_data.dx = dx;
10461   scroll_data.dy = dy;
10462
10463   adjust_allocation_recurse (widget, &scroll_data);
10464 }
10465
10466 /* Callbacks */
10467 static void
10468 gtk_tree_view_adjustment_changed (GtkAdjustment *adjustment,
10469                                   GtkTreeView   *tree_view)
10470 {
10471   if (GTK_WIDGET_REALIZED (tree_view))
10472     {
10473       gint dy;
10474
10475       gdk_window_move (tree_view->priv->bin_window,
10476                        - tree_view->priv->hadjustment->value,
10477                        TREE_VIEW_HEADER_HEIGHT (tree_view));
10478       gdk_window_move (tree_view->priv->header_window,
10479                        - tree_view->priv->hadjustment->value,
10480                        0);
10481       dy = tree_view->priv->dy - (int) tree_view->priv->vadjustment->value;
10482       if (dy && tree_view->priv->edited_column)
10483         {
10484           if (GTK_IS_WIDGET (tree_view->priv->edited_column->editable_widget))
10485             {
10486               GList *list;
10487               GtkWidget *widget;
10488               GtkTreeViewChild *child = NULL;
10489
10490               widget = GTK_WIDGET (tree_view->priv->edited_column->editable_widget);
10491               adjust_allocation (widget, 0, dy);
10492
10493               for (list = tree_view->priv->children; list; list = list->next)
10494                 {
10495                   child = (GtkTreeViewChild *)list->data;
10496                   if (child->widget == widget)
10497                     {
10498                       child->y += dy;
10499                       break;
10500                     }
10501                 }
10502             }
10503         }
10504       gdk_window_scroll (tree_view->priv->bin_window, 0, dy);
10505
10506       if (tree_view->priv->dy != (int) tree_view->priv->vadjustment->value)
10507         {
10508           /* update our dy and top_row */
10509           tree_view->priv->dy = (int) tree_view->priv->vadjustment->value;
10510
10511           if (!tree_view->priv->in_top_row_to_dy)
10512             gtk_tree_view_dy_to_top_row (tree_view);
10513         }
10514     }
10515 }
10516
10517 \f
10518
10519 /* Public methods
10520  */
10521
10522 /**
10523  * gtk_tree_view_new:
10524  *
10525  * Creates a new #GtkTreeView widget.
10526  *
10527  * Return value: A newly created #GtkTreeView widget.
10528  **/
10529 GtkWidget *
10530 gtk_tree_view_new (void)
10531 {
10532   return g_object_new (GTK_TYPE_TREE_VIEW, NULL);
10533 }
10534
10535 /**
10536  * gtk_tree_view_new_with_model:
10537  * @model: the model.
10538  *
10539  * Creates a new #GtkTreeView widget with the model initialized to @model.
10540  *
10541  * Return value: A newly created #GtkTreeView widget.
10542  **/
10543 GtkWidget *
10544 gtk_tree_view_new_with_model (GtkTreeModel *model)
10545 {
10546   return g_object_new (GTK_TYPE_TREE_VIEW, "model", model, NULL);
10547 }
10548
10549 /* Public Accessors
10550  */
10551
10552 /**
10553  * gtk_tree_view_get_model:
10554  * @tree_view: a #GtkTreeView
10555  *
10556  * Returns the model the #GtkTreeView is based on.  Returns %NULL if the
10557  * model is unset.
10558  *
10559  * Return value: A #GtkTreeModel, or %NULL if none is currently being used.
10560  **/
10561 GtkTreeModel *
10562 gtk_tree_view_get_model (GtkTreeView *tree_view)
10563 {
10564   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10565
10566   return tree_view->priv->model;
10567 }
10568
10569 /**
10570  * gtk_tree_view_set_model:
10571  * @tree_view: A #GtkTreeNode.
10572  * @model: The model.
10573  *
10574  * Sets the model for a #GtkTreeView.  If the @tree_view already has a model
10575  * set, it will remove it before setting the new model.  If @model is %NULL,
10576  * then it will unset the old model.
10577  **/
10578 void
10579 gtk_tree_view_set_model (GtkTreeView  *tree_view,
10580                          GtkTreeModel *model)
10581 {
10582   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10583   g_return_if_fail (model == NULL || GTK_IS_TREE_MODEL (model));
10584
10585   if (model == tree_view->priv->model)
10586     return;
10587
10588   if (tree_view->priv->scroll_to_path)
10589     {
10590       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10591       tree_view->priv->scroll_to_path = NULL;
10592     }
10593
10594   if (tree_view->priv->model)
10595     {
10596       GList *tmplist = tree_view->priv->columns;
10597
10598       gtk_tree_view_unref_and_check_selection_tree (tree_view, tree_view->priv->tree);
10599       gtk_tree_view_stop_editing (tree_view, TRUE);
10600
10601       remove_expand_collapse_timeout (tree_view);
10602
10603       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10604                                             gtk_tree_view_row_changed,
10605                                             tree_view);
10606       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10607                                             gtk_tree_view_row_inserted,
10608                                             tree_view);
10609       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10610                                             gtk_tree_view_row_has_child_toggled,
10611                                             tree_view);
10612       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10613                                             gtk_tree_view_row_deleted,
10614                                             tree_view);
10615       g_signal_handlers_disconnect_by_func (tree_view->priv->model,
10616                                             gtk_tree_view_rows_reordered,
10617                                             tree_view);
10618
10619       for (; tmplist; tmplist = tmplist->next)
10620         _gtk_tree_view_column_unset_model (tmplist->data,
10621                                            tree_view->priv->model);
10622
10623       if (tree_view->priv->tree)
10624         gtk_tree_view_free_rbtree (tree_view);
10625
10626       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
10627       tree_view->priv->drag_dest_row = NULL;
10628       gtk_tree_row_reference_free (tree_view->priv->cursor);
10629       tree_view->priv->cursor = NULL;
10630       gtk_tree_row_reference_free (tree_view->priv->anchor);
10631       tree_view->priv->anchor = NULL;
10632       gtk_tree_row_reference_free (tree_view->priv->top_row);
10633       tree_view->priv->top_row = NULL;
10634       gtk_tree_row_reference_free (tree_view->priv->last_button_press);
10635       tree_view->priv->last_button_press = NULL;
10636       gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
10637       tree_view->priv->last_button_press_2 = NULL;
10638       gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
10639       tree_view->priv->scroll_to_path = NULL;
10640
10641       tree_view->priv->scroll_to_column = NULL;
10642
10643       g_object_unref (tree_view->priv->model);
10644
10645       tree_view->priv->search_column = -1;
10646       tree_view->priv->fixed_height_check = 0;
10647       tree_view->priv->fixed_height = -1;
10648       tree_view->priv->dy = tree_view->priv->top_row_dy = 0;
10649     }
10650
10651   tree_view->priv->model = model;
10652
10653   if (tree_view->priv->model)
10654     {
10655       gint i;
10656       GtkTreePath *path;
10657       GtkTreeIter iter;
10658       GtkTreeModelFlags flags;
10659
10660       if (tree_view->priv->search_column == -1)
10661         {
10662           for (i = 0; i < gtk_tree_model_get_n_columns (model); i++)
10663             {
10664               GType type = gtk_tree_model_get_column_type (model, i);
10665
10666               if (g_value_type_transformable (type, G_TYPE_STRING))
10667                 {
10668                   tree_view->priv->search_column = i;
10669                   break;
10670                 }
10671             }
10672         }
10673
10674       g_object_ref (tree_view->priv->model);
10675       g_signal_connect (tree_view->priv->model,
10676                         "row-changed",
10677                         G_CALLBACK (gtk_tree_view_row_changed),
10678                         tree_view);
10679       g_signal_connect (tree_view->priv->model,
10680                         "row-inserted",
10681                         G_CALLBACK (gtk_tree_view_row_inserted),
10682                         tree_view);
10683       g_signal_connect (tree_view->priv->model,
10684                         "row-has-child-toggled",
10685                         G_CALLBACK (gtk_tree_view_row_has_child_toggled),
10686                         tree_view);
10687       g_signal_connect (tree_view->priv->model,
10688                         "row-deleted",
10689                         G_CALLBACK (gtk_tree_view_row_deleted),
10690                         tree_view);
10691       g_signal_connect (tree_view->priv->model,
10692                         "rows-reordered",
10693                         G_CALLBACK (gtk_tree_view_rows_reordered),
10694                         tree_view);
10695
10696       flags = gtk_tree_model_get_flags (tree_view->priv->model);
10697       if ((flags & GTK_TREE_MODEL_LIST_ONLY) == GTK_TREE_MODEL_LIST_ONLY)
10698         GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10699       else
10700         GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_IS_LIST);
10701
10702       path = gtk_tree_path_new_first ();
10703       if (gtk_tree_model_get_iter (tree_view->priv->model, &iter, path))
10704         {
10705           tree_view->priv->tree = _gtk_rbtree_new ();
10706           gtk_tree_view_build_tree (tree_view, tree_view->priv->tree, &iter, 1, FALSE);
10707         }
10708       gtk_tree_path_free (path);
10709
10710       /*  FIXME: do I need to do this? gtk_tree_view_create_buttons (tree_view); */
10711       install_presize_handler (tree_view);
10712     }
10713
10714   g_object_notify (G_OBJECT (tree_view), "model");
10715
10716   if (tree_view->priv->selection)
10717   _gtk_tree_selection_emit_changed (tree_view->priv->selection);
10718
10719   if (GTK_WIDGET_REALIZED (tree_view))
10720     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10721 }
10722
10723 /**
10724  * gtk_tree_view_get_selection:
10725  * @tree_view: A #GtkTreeView.
10726  *
10727  * Gets the #GtkTreeSelection associated with @tree_view.
10728  *
10729  * Return value: A #GtkTreeSelection object.
10730  **/
10731 GtkTreeSelection *
10732 gtk_tree_view_get_selection (GtkTreeView *tree_view)
10733 {
10734   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10735
10736   return tree_view->priv->selection;
10737 }
10738
10739 /**
10740  * gtk_tree_view_get_hadjustment:
10741  * @tree_view: A #GtkTreeView
10742  *
10743  * Gets the #GtkAdjustment currently being used for the horizontal aspect.
10744  *
10745  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10746  * used.
10747  **/
10748 GtkAdjustment *
10749 gtk_tree_view_get_hadjustment (GtkTreeView *tree_view)
10750 {
10751   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10752
10753   if (tree_view->priv->hadjustment == NULL)
10754     gtk_tree_view_set_hadjustment (tree_view, NULL);
10755
10756   return tree_view->priv->hadjustment;
10757 }
10758
10759 /**
10760  * gtk_tree_view_set_hadjustment:
10761  * @tree_view: A #GtkTreeView
10762  * @adjustment: The #GtkAdjustment to set, or %NULL
10763  *
10764  * Sets the #GtkAdjustment for the current horizontal aspect.
10765  **/
10766 void
10767 gtk_tree_view_set_hadjustment (GtkTreeView   *tree_view,
10768                                GtkAdjustment *adjustment)
10769 {
10770   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10771
10772   gtk_tree_view_set_adjustments (tree_view,
10773                                  adjustment,
10774                                  tree_view->priv->vadjustment);
10775
10776   g_object_notify (G_OBJECT (tree_view), "hadjustment");
10777 }
10778
10779 /**
10780  * gtk_tree_view_get_vadjustment:
10781  * @tree_view: A #GtkTreeView
10782  *
10783  * Gets the #GtkAdjustment currently being used for the vertical aspect.
10784  *
10785  * Return value: A #GtkAdjustment object, or %NULL if none is currently being
10786  * used.
10787  **/
10788 GtkAdjustment *
10789 gtk_tree_view_get_vadjustment (GtkTreeView *tree_view)
10790 {
10791   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
10792
10793   if (tree_view->priv->vadjustment == NULL)
10794     gtk_tree_view_set_vadjustment (tree_view, NULL);
10795
10796   return tree_view->priv->vadjustment;
10797 }
10798
10799 /**
10800  * gtk_tree_view_set_vadjustment:
10801  * @tree_view: A #GtkTreeView
10802  * @adjustment: The #GtkAdjustment to set, or %NULL
10803  *
10804  * Sets the #GtkAdjustment for the current vertical aspect.
10805  **/
10806 void
10807 gtk_tree_view_set_vadjustment (GtkTreeView   *tree_view,
10808                                GtkAdjustment *adjustment)
10809 {
10810   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10811
10812   gtk_tree_view_set_adjustments (tree_view,
10813                                  tree_view->priv->hadjustment,
10814                                  adjustment);
10815
10816   g_object_notify (G_OBJECT (tree_view), "vadjustment");
10817 }
10818
10819 /* Column and header operations */
10820
10821 /**
10822  * gtk_tree_view_get_headers_visible:
10823  * @tree_view: A #GtkTreeView.
10824  *
10825  * Returns %TRUE if the headers on the @tree_view are visible.
10826  *
10827  * Return value: Whether the headers are visible or not.
10828  **/
10829 gboolean
10830 gtk_tree_view_get_headers_visible (GtkTreeView *tree_view)
10831 {
10832   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10833
10834   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10835 }
10836
10837 /**
10838  * gtk_tree_view_set_headers_visible:
10839  * @tree_view: A #GtkTreeView.
10840  * @headers_visible: %TRUE if the headers are visible
10841  *
10842  * Sets the visibility state of the headers.
10843  **/
10844 void
10845 gtk_tree_view_set_headers_visible (GtkTreeView *tree_view,
10846                                    gboolean     headers_visible)
10847 {
10848   gint x, y;
10849   GList *list;
10850   GtkTreeViewColumn *column;
10851
10852   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10853
10854   headers_visible = !! headers_visible;
10855
10856   if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE) == headers_visible)
10857     return;
10858
10859   if (headers_visible)
10860     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10861   else
10862     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE);
10863
10864   if (GTK_WIDGET_REALIZED (tree_view))
10865     {
10866       gdk_window_get_position (tree_view->priv->bin_window, &x, &y);
10867       if (headers_visible)
10868         {
10869           gdk_window_move_resize (tree_view->priv->bin_window, x, y  + TREE_VIEW_HEADER_HEIGHT (tree_view), tree_view->priv->width, GTK_WIDGET (tree_view)->allocation.height -  + TREE_VIEW_HEADER_HEIGHT (tree_view));
10870
10871           if (GTK_WIDGET_MAPPED (tree_view))
10872             gtk_tree_view_map_buttons (tree_view);
10873         }
10874       else
10875         {
10876           gdk_window_move_resize (tree_view->priv->bin_window, x, y, tree_view->priv->width, tree_view->priv->height);
10877
10878           for (list = tree_view->priv->columns; list; list = list->next)
10879             {
10880               column = list->data;
10881               gtk_widget_unmap (column->button);
10882             }
10883           gdk_window_hide (tree_view->priv->header_window);
10884         }
10885     }
10886
10887   tree_view->priv->vadjustment->page_size = GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
10888   tree_view->priv->vadjustment->page_increment = (GTK_WIDGET (tree_view)->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view)) / 2;
10889   tree_view->priv->vadjustment->lower = 0;
10890   tree_view->priv->vadjustment->upper = tree_view->priv->height;
10891   gtk_adjustment_changed (tree_view->priv->vadjustment);
10892
10893   gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10894
10895   g_object_notify (G_OBJECT (tree_view), "headers-visible");
10896 }
10897
10898 /**
10899  * gtk_tree_view_columns_autosize:
10900  * @tree_view: A #GtkTreeView.
10901  *
10902  * Resizes all columns to their optimal width. Only works after the
10903  * treeview has been realized.
10904  **/
10905 void
10906 gtk_tree_view_columns_autosize (GtkTreeView *tree_view)
10907 {
10908   gboolean dirty = FALSE;
10909   GList *list;
10910   GtkTreeViewColumn *column;
10911
10912   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10913
10914   for (list = tree_view->priv->columns; list; list = list->next)
10915     {
10916       column = list->data;
10917       if (column->column_type == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
10918         continue;
10919       _gtk_tree_view_column_cell_set_dirty (column, TRUE);
10920       dirty = TRUE;
10921     }
10922
10923   if (dirty)
10924     gtk_widget_queue_resize (GTK_WIDGET (tree_view));
10925 }
10926
10927 /**
10928  * gtk_tree_view_set_headers_clickable:
10929  * @tree_view: A #GtkTreeView.
10930  * @setting: %TRUE if the columns are clickable.
10931  *
10932  * Allow the column title buttons to be clicked.
10933  **/
10934 void
10935 gtk_tree_view_set_headers_clickable (GtkTreeView *tree_view,
10936                                      gboolean   setting)
10937 {
10938   GList *list;
10939
10940   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10941
10942   for (list = tree_view->priv->columns; list; list = list->next)
10943     gtk_tree_view_column_set_clickable (GTK_TREE_VIEW_COLUMN (list->data), setting);
10944
10945   g_object_notify (G_OBJECT (tree_view), "headers-clickable");
10946 }
10947
10948
10949 /**
10950  * gtk_tree_view_get_headers_clickable:
10951  * @tree_view: A #GtkTreeView.
10952  *
10953  * Returns whether all header columns are clickable.
10954  *
10955  * Return value: %TRUE if all header columns are clickable, otherwise %FALSE
10956  *
10957  * Since: 2.10
10958  **/
10959 gboolean
10960 gtk_tree_view_get_headers_clickable (GtkTreeView *tree_view)
10961 {
10962   GList *list;
10963
10964   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
10965
10966   for (list = tree_view->priv->columns; list; list = list->next)
10967     if (!GTK_TREE_VIEW_COLUMN (list->data)->clickable)
10968       return FALSE;
10969
10970   return TRUE;
10971 }
10972
10973 /**
10974  * gtk_tree_view_set_rules_hint
10975  * @tree_view: a #GtkTreeView
10976  * @setting: %TRUE if the tree requires reading across rows
10977  *
10978  * This function tells GTK+ that the user interface for your
10979  * application requires users to read across tree rows and associate
10980  * cells with one another. By default, GTK+ will then render the tree
10981  * with alternating row colors. Do <emphasis>not</emphasis> use it
10982  * just because you prefer the appearance of the ruled tree; that's a
10983  * question for the theme. Some themes will draw tree rows in
10984  * alternating colors even when rules are turned off, and users who
10985  * prefer that appearance all the time can choose those themes. You
10986  * should call this function only as a <emphasis>semantic</emphasis>
10987  * hint to the theme engine that your tree makes alternating colors
10988  * useful from a functional standpoint (since it has lots of columns,
10989  * generally).
10990  *
10991  **/
10992 void
10993 gtk_tree_view_set_rules_hint (GtkTreeView  *tree_view,
10994                               gboolean      setting)
10995 {
10996   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
10997
10998   setting = setting != FALSE;
10999
11000   if (tree_view->priv->has_rules != setting)
11001     {
11002       tree_view->priv->has_rules = setting;
11003       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
11004     }
11005
11006   g_object_notify (G_OBJECT (tree_view), "rules-hint");
11007 }
11008
11009 /**
11010  * gtk_tree_view_get_rules_hint
11011  * @tree_view: a #GtkTreeView
11012  *
11013  * Gets the setting set by gtk_tree_view_set_rules_hint().
11014  *
11015  * Return value: %TRUE if rules are useful for the user of this tree
11016  **/
11017 gboolean
11018 gtk_tree_view_get_rules_hint (GtkTreeView  *tree_view)
11019 {
11020   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
11021
11022   return tree_view->priv->has_rules;
11023 }
11024
11025 /* Public Column functions
11026  */
11027
11028 /**
11029  * gtk_tree_view_append_column:
11030  * @tree_view: A #GtkTreeView.
11031  * @column: The #GtkTreeViewColumn to add.
11032  *
11033  * Appends @column to the list of columns. If @tree_view has "fixed_height"
11034  * mode enabled, then @column must have its "sizing" property set to be
11035  * GTK_TREE_VIEW_COLUMN_FIXED.
11036  *
11037  * Return value: The number of columns in @tree_view after appending.
11038  **/
11039 gint
11040 gtk_tree_view_append_column (GtkTreeView       *tree_view,
11041                              GtkTreeViewColumn *column)
11042 {
11043   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11044   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11045   g_return_val_if_fail (column->tree_view == NULL, -1);
11046
11047   return gtk_tree_view_insert_column (tree_view, column, -1);
11048 }
11049
11050
11051 /**
11052  * gtk_tree_view_remove_column:
11053  * @tree_view: A #GtkTreeView.
11054  * @column: The #GtkTreeViewColumn to remove.
11055  *
11056  * Removes @column from @tree_view.
11057  *
11058  * Return value: The number of columns in @tree_view after removing.
11059  **/
11060 gint
11061 gtk_tree_view_remove_column (GtkTreeView       *tree_view,
11062                              GtkTreeViewColumn *column)
11063 {
11064   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11065   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11066   g_return_val_if_fail (column->tree_view == GTK_WIDGET (tree_view), -1);
11067
11068   if (tree_view->priv->focus_column == column)
11069     tree_view->priv->focus_column = NULL;
11070
11071   if (tree_view->priv->edited_column == column)
11072     {
11073       gtk_tree_view_stop_editing (tree_view, TRUE);
11074
11075       /* no need to, but just to be sure ... */
11076       tree_view->priv->edited_column = NULL;
11077     }
11078
11079   g_signal_handlers_disconnect_by_func (column,
11080                                         G_CALLBACK (column_sizing_notify),
11081                                         tree_view);
11082
11083   _gtk_tree_view_column_unset_tree_view (column);
11084
11085   tree_view->priv->columns = g_list_remove (tree_view->priv->columns, column);
11086   tree_view->priv->n_columns--;
11087
11088   if (GTK_WIDGET_REALIZED (tree_view))
11089     {
11090       GList *list;
11091
11092       _gtk_tree_view_column_unrealize_button (column);
11093       for (list = tree_view->priv->columns; list; list = list->next)
11094         {
11095           GtkTreeViewColumn *tmp_column;
11096
11097           tmp_column = GTK_TREE_VIEW_COLUMN (list->data);
11098           if (tmp_column->visible)
11099             _gtk_tree_view_column_cell_set_dirty (tmp_column, TRUE);
11100         }
11101
11102       if (tree_view->priv->n_columns == 0 &&
11103           gtk_tree_view_get_headers_visible (tree_view))
11104         gdk_window_hide (tree_view->priv->header_window);
11105
11106       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11107     }
11108
11109   g_object_unref (column);
11110   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11111
11112   return tree_view->priv->n_columns;
11113 }
11114
11115 /**
11116  * gtk_tree_view_insert_column:
11117  * @tree_view: A #GtkTreeView.
11118  * @column: The #GtkTreeViewColumn to be inserted.
11119  * @position: The position to insert @column in.
11120  *
11121  * This inserts the @column into the @tree_view at @position.  If @position is
11122  * -1, then the column is inserted at the end. If @tree_view has
11123  * "fixed_height" mode enabled, then @column must have its "sizing" property
11124  * set to be GTK_TREE_VIEW_COLUMN_FIXED.
11125  *
11126  * Return value: The number of columns in @tree_view after insertion.
11127  **/
11128 gint
11129 gtk_tree_view_insert_column (GtkTreeView       *tree_view,
11130                              GtkTreeViewColumn *column,
11131                              gint               position)
11132 {
11133   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11134   g_return_val_if_fail (GTK_IS_TREE_VIEW_COLUMN (column), -1);
11135   g_return_val_if_fail (column->tree_view == NULL, -1);
11136
11137   if (tree_view->priv->fixed_height_mode)
11138     g_return_val_if_fail (gtk_tree_view_column_get_sizing (column)
11139                           == GTK_TREE_VIEW_COLUMN_FIXED, -1);
11140
11141   g_object_ref_sink (column);
11142
11143   if (tree_view->priv->n_columns == 0 &&
11144       GTK_WIDGET_REALIZED (tree_view) &&
11145       gtk_tree_view_get_headers_visible (tree_view))
11146     {
11147       gdk_window_show (tree_view->priv->header_window);
11148     }
11149
11150   g_signal_connect (column, "notify::sizing",
11151                     G_CALLBACK (column_sizing_notify), tree_view);
11152
11153   tree_view->priv->columns = g_list_insert (tree_view->priv->columns,
11154                                             column, position);
11155   tree_view->priv->n_columns++;
11156
11157   _gtk_tree_view_column_set_tree_view (column, tree_view);
11158
11159   if (GTK_WIDGET_REALIZED (tree_view))
11160     {
11161       GList *list;
11162
11163       _gtk_tree_view_column_realize_button (column);
11164
11165       for (list = tree_view->priv->columns; list; list = list->next)
11166         {
11167           column = GTK_TREE_VIEW_COLUMN (list->data);
11168           if (column->visible)
11169             _gtk_tree_view_column_cell_set_dirty (column, TRUE);
11170         }
11171       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11172     }
11173
11174   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11175
11176   return tree_view->priv->n_columns;
11177 }
11178
11179 /**
11180  * gtk_tree_view_insert_column_with_attributes:
11181  * @tree_view: A #GtkTreeView
11182  * @position: The position to insert the new column in.
11183  * @title: The title to set the header to.
11184  * @cell: The #GtkCellRenderer.
11185  * @Varargs: A %NULL-terminated list of attributes.
11186  *
11187  * Creates a new #GtkTreeViewColumn and inserts it into the @tree_view at
11188  * @position.  If @position is -1, then the newly created column is inserted at
11189  * the end.  The column is initialized with the attributes given. If @tree_view
11190  * has "fixed_height" mode enabled, then the new column will have its sizing
11191  * property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11192  *
11193  * Return value: The number of columns in @tree_view after insertion.
11194  **/
11195 gint
11196 gtk_tree_view_insert_column_with_attributes (GtkTreeView     *tree_view,
11197                                              gint             position,
11198                                              const gchar     *title,
11199                                              GtkCellRenderer *cell,
11200                                              ...)
11201 {
11202   GtkTreeViewColumn *column;
11203   gchar *attribute;
11204   va_list args;
11205   gint column_id;
11206
11207   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11208
11209   column = gtk_tree_view_column_new ();
11210   if (tree_view->priv->fixed_height_mode)
11211     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11212
11213   gtk_tree_view_column_set_title (column, title);
11214   gtk_tree_view_column_pack_start (column, cell, TRUE);
11215
11216   va_start (args, cell);
11217
11218   attribute = va_arg (args, gchar *);
11219
11220   while (attribute != NULL)
11221     {
11222       column_id = va_arg (args, gint);
11223       gtk_tree_view_column_add_attribute (column, cell, attribute, column_id);
11224       attribute = va_arg (args, gchar *);
11225     }
11226
11227   va_end (args);
11228
11229   gtk_tree_view_insert_column (tree_view, column, position);
11230
11231   return tree_view->priv->n_columns;
11232 }
11233
11234 /**
11235  * gtk_tree_view_insert_column_with_data_func:
11236  * @tree_view: a #GtkTreeView
11237  * @position: Position to insert, -1 for append
11238  * @title: column title
11239  * @cell: cell renderer for column
11240  * @func: function to set attributes of cell renderer
11241  * @data: data for @func
11242  * @dnotify: destroy notifier for @data
11243  *
11244  * Convenience function that inserts a new column into the #GtkTreeView
11245  * with the given cell renderer and a #GtkCellDataFunc to set cell renderer
11246  * attributes (normally using data from the model). See also
11247  * gtk_tree_view_column_set_cell_data_func(), gtk_tree_view_column_pack_start().
11248  * If @tree_view has "fixed_height" mode enabled, then the new column will have its
11249  * "sizing" property set to be GTK_TREE_VIEW_COLUMN_FIXED.
11250  *
11251  * Return value: number of columns in the tree view post-insert
11252  **/
11253 gint
11254 gtk_tree_view_insert_column_with_data_func  (GtkTreeView               *tree_view,
11255                                              gint                       position,
11256                                              const gchar               *title,
11257                                              GtkCellRenderer           *cell,
11258                                              GtkTreeCellDataFunc        func,
11259                                              gpointer                   data,
11260                                              GDestroyNotify             dnotify)
11261 {
11262   GtkTreeViewColumn *column;
11263
11264   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
11265
11266   column = gtk_tree_view_column_new ();
11267   if (tree_view->priv->fixed_height_mode)
11268     gtk_tree_view_column_set_sizing (column, GTK_TREE_VIEW_COLUMN_FIXED);
11269
11270   gtk_tree_view_column_set_title (column, title);
11271   gtk_tree_view_column_pack_start (column, cell, TRUE);
11272   gtk_tree_view_column_set_cell_data_func (column, cell, func, data, dnotify);
11273
11274   gtk_tree_view_insert_column (tree_view, column, position);
11275
11276   return tree_view->priv->n_columns;
11277 }
11278
11279 /**
11280  * gtk_tree_view_get_column:
11281  * @tree_view: A #GtkTreeView.
11282  * @n: The position of the column, counting from 0.
11283  *
11284  * Gets the #GtkTreeViewColumn at the given position in the #tree_view.
11285  *
11286  * Return value: The #GtkTreeViewColumn, or %NULL if the position is outside the
11287  * range of columns.
11288  **/
11289 GtkTreeViewColumn *
11290 gtk_tree_view_get_column (GtkTreeView *tree_view,
11291                           gint         n)
11292 {
11293   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11294
11295   if (n < 0 || n >= tree_view->priv->n_columns)
11296     return NULL;
11297
11298   if (tree_view->priv->columns == NULL)
11299     return NULL;
11300
11301   return GTK_TREE_VIEW_COLUMN (g_list_nth (tree_view->priv->columns, n)->data);
11302 }
11303
11304 /**
11305  * gtk_tree_view_get_columns:
11306  * @tree_view: A #GtkTreeView
11307  *
11308  * Returns a #GList of all the #GtkTreeViewColumn s currently in @tree_view.
11309  * The returned list must be freed with g_list_free ().
11310  *
11311  * Return value: A list of #GtkTreeViewColumn s
11312  **/
11313 GList *
11314 gtk_tree_view_get_columns (GtkTreeView *tree_view)
11315 {
11316   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11317
11318   return g_list_copy (tree_view->priv->columns);
11319 }
11320
11321 /**
11322  * gtk_tree_view_move_column_after:
11323  * @tree_view: A #GtkTreeView
11324  * @column: The #GtkTreeViewColumn to be moved.
11325  * @base_column: The #GtkTreeViewColumn to be moved relative to, or %NULL.
11326  *
11327  * Moves @column to be after to @base_column.  If @base_column is %NULL, then
11328  * @column is placed in the first position.
11329  **/
11330 void
11331 gtk_tree_view_move_column_after (GtkTreeView       *tree_view,
11332                                  GtkTreeViewColumn *column,
11333                                  GtkTreeViewColumn *base_column)
11334 {
11335   GList *column_list_el, *base_el = NULL;
11336
11337   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11338
11339   column_list_el = g_list_find (tree_view->priv->columns, column);
11340   g_return_if_fail (column_list_el != NULL);
11341
11342   if (base_column)
11343     {
11344       base_el = g_list_find (tree_view->priv->columns, base_column);
11345       g_return_if_fail (base_el != NULL);
11346     }
11347
11348   if (column_list_el->prev == base_el)
11349     return;
11350
11351   tree_view->priv->columns = g_list_remove_link (tree_view->priv->columns, column_list_el);
11352   if (base_el == NULL)
11353     {
11354       column_list_el->prev = NULL;
11355       column_list_el->next = tree_view->priv->columns;
11356       if (column_list_el->next)
11357         column_list_el->next->prev = column_list_el;
11358       tree_view->priv->columns = column_list_el;
11359     }
11360   else
11361     {
11362       column_list_el->prev = base_el;
11363       column_list_el->next = base_el->next;
11364       if (column_list_el->next)
11365         column_list_el->next->prev = column_list_el;
11366       base_el->next = column_list_el;
11367     }
11368
11369   if (GTK_WIDGET_REALIZED (tree_view))
11370     {
11371       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
11372       gtk_tree_view_size_allocate_columns (GTK_WIDGET (tree_view), NULL);
11373     }
11374
11375   g_signal_emit (tree_view, tree_view_signals[COLUMNS_CHANGED], 0);
11376 }
11377
11378 /**
11379  * gtk_tree_view_set_expander_column:
11380  * @tree_view: A #GtkTreeView
11381  * @column: %NULL, or the column to draw the expander arrow at.
11382  *
11383  * Sets the column to draw the expander arrow at. It must be in @tree_view.
11384  * If @column is %NULL, then the expander arrow is always at the first
11385  * visible column.
11386  *
11387  * If you do not want expander arrow to appear in your tree, set the
11388  * expander column to a hidden column.
11389  **/
11390 void
11391 gtk_tree_view_set_expander_column (GtkTreeView       *tree_view,
11392                                    GtkTreeViewColumn *column)
11393 {
11394   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11395   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
11396
11397   if (tree_view->priv->expander_column != column)
11398     {
11399       GList *list;
11400
11401       if (column)
11402         {
11403           /* Confirm that column is in tree_view */
11404           for (list = tree_view->priv->columns; list; list = list->next)
11405             if (list->data == column)
11406               break;
11407           g_return_if_fail (list != NULL);
11408         }
11409
11410       tree_view->priv->expander_column = column;
11411       g_object_notify (G_OBJECT (tree_view), "expander-column");
11412     }
11413 }
11414
11415 /**
11416  * gtk_tree_view_get_expander_column:
11417  * @tree_view: A #GtkTreeView
11418  *
11419  * Returns the column that is the current expander column.  This
11420  * column has the expander arrow drawn next to it.
11421  *
11422  * Return value: The expander column.
11423  **/
11424 GtkTreeViewColumn *
11425 gtk_tree_view_get_expander_column (GtkTreeView *tree_view)
11426 {
11427   GList *list;
11428
11429   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
11430
11431   for (list = tree_view->priv->columns; list; list = list->next)
11432     if (gtk_tree_view_is_expander_column (tree_view, GTK_TREE_VIEW_COLUMN (list->data)))
11433       return (GtkTreeViewColumn *) list->data;
11434   return NULL;
11435 }
11436
11437
11438 /**
11439  * gtk_tree_view_set_column_drag_function:
11440  * @tree_view: A #GtkTreeView.
11441  * @func: A function to determine which columns are reorderable, or %NULL.
11442  * @user_data: User data to be passed to @func, or %NULL
11443  * @destroy: Destroy notifier for @user_data, or %NULL
11444  *
11445  * Sets a user function for determining where a column may be dropped when
11446  * dragged.  This function is called on every column pair in turn at the
11447  * beginning of a column drag to determine where a drop can take place.  The
11448  * arguments passed to @func are: the @tree_view, the #GtkTreeViewColumn being
11449  * dragged, the two #GtkTreeViewColumn s determining the drop spot, and
11450  * @user_data.  If either of the #GtkTreeViewColumn arguments for the drop spot
11451  * are %NULL, then they indicate an edge.  If @func is set to be %NULL, then
11452  * @tree_view reverts to the default behavior of allowing all columns to be
11453  * dropped everywhere.
11454  **/
11455 void
11456 gtk_tree_view_set_column_drag_function (GtkTreeView               *tree_view,
11457                                         GtkTreeViewColumnDropFunc  func,
11458                                         gpointer                   user_data,
11459                                         GDestroyNotify             destroy)
11460 {
11461   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11462
11463   if (tree_view->priv->column_drop_func_data_destroy)
11464     tree_view->priv->column_drop_func_data_destroy (tree_view->priv->column_drop_func_data);
11465
11466   tree_view->priv->column_drop_func = func;
11467   tree_view->priv->column_drop_func_data = user_data;
11468   tree_view->priv->column_drop_func_data_destroy = destroy;
11469 }
11470
11471 /**
11472  * gtk_tree_view_scroll_to_point:
11473  * @tree_view: a #GtkTreeView
11474  * @tree_x: X coordinate of new top-left pixel of visible area, or -1
11475  * @tree_y: Y coordinate of new top-left pixel of visible area, or -1
11476  *
11477  * Scrolls the tree view such that the top-left corner of the visible
11478  * area is @tree_x, @tree_y, where @tree_x and @tree_y are specified
11479  * in tree coordinates.  The @tree_view must be realized before
11480  * this function is called.  If it isn't, you probably want to be
11481  * using gtk_tree_view_scroll_to_cell().
11482  *
11483  * If either @tree_x or @tree_y are -1, then that direction isn't scrolled.
11484  **/
11485 void
11486 gtk_tree_view_scroll_to_point (GtkTreeView *tree_view,
11487                                gint         tree_x,
11488                                gint         tree_y)
11489 {
11490   GtkAdjustment *hadj;
11491   GtkAdjustment *vadj;
11492
11493   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11494   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
11495
11496   hadj = tree_view->priv->hadjustment;
11497   vadj = tree_view->priv->vadjustment;
11498
11499   if (tree_x != -1)
11500     gtk_adjustment_set_value (hadj, CLAMP (tree_x, hadj->lower, hadj->upper - hadj->page_size));
11501   if (tree_y != -1)
11502     gtk_adjustment_set_value (vadj, CLAMP (tree_y, vadj->lower, vadj->upper - vadj->page_size));
11503 }
11504
11505 /**
11506  * gtk_tree_view_scroll_to_cell:
11507  * @tree_view: A #GtkTreeView.
11508  * @path: The path of the row to move to, or %NULL.
11509  * @column: The #GtkTreeViewColumn to move horizontally to, or %NULL.
11510  * @use_align: whether to use alignment arguments, or %FALSE.
11511  * @row_align: The vertical alignment of the row specified by @path.
11512  * @col_align: The horizontal alignment of the column specified by @column.
11513  *
11514  * Moves the alignments of @tree_view to the position specified by @column and
11515  * @path.  If @column is %NULL, then no horizontal scrolling occurs.  Likewise,
11516  * if @path is %NULL no vertical scrolling occurs.  At a minimum, one of @column
11517  * or @path need to be non-%NULL.  @row_align determines where the row is
11518  * placed, and @col_align determines where @column is placed.  Both are expected
11519  * to be between 0.0 and 1.0. 0.0 means left/top alignment, 1.0 means
11520  * right/bottom alignment, 0.5 means center.
11521  *
11522  * If @use_align is %FALSE, then the alignment arguments are ignored, and the
11523  * tree does the minimum amount of work to scroll the cell onto the screen.
11524  * This means that the cell will be scrolled to the edge closest to its current
11525  * position.  If the cell is currently visible on the screen, nothing is done.
11526  *
11527  * This function only works if the model is set, and @path is a valid row on the
11528  * model.  If the model changes before the @tree_view is realized, the centered
11529  * path will be modified to reflect this change.
11530  **/
11531 void
11532 gtk_tree_view_scroll_to_cell (GtkTreeView       *tree_view,
11533                               GtkTreePath       *path,
11534                               GtkTreeViewColumn *column,
11535                               gboolean           use_align,
11536                               gfloat             row_align,
11537                               gfloat             col_align)
11538 {
11539   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11540   g_return_if_fail (tree_view->priv->model != NULL);
11541   g_return_if_fail (tree_view->priv->tree != NULL);
11542   g_return_if_fail (row_align >= 0.0 && row_align <= 1.0);
11543   g_return_if_fail (col_align >= 0.0 && col_align <= 1.0);
11544   g_return_if_fail (path != NULL || column != NULL);
11545
11546 #if 0
11547   g_print ("gtk_tree_view_scroll_to_cell:\npath: %s\ncolumn: %s\nuse_align: %d\nrow_align: %f\ncol_align: %f\n",
11548            gtk_tree_path_to_string (path), column?"non-null":"null", use_align, row_align, col_align);
11549 #endif
11550   row_align = CLAMP (row_align, 0.0, 1.0);
11551   col_align = CLAMP (col_align, 0.0, 1.0);
11552
11553
11554   /* Note: Despite the benefits that come from having one code path for the
11555    * scrolling code, we short-circuit validate_visible_area's immplementation as
11556    * it is much slower than just going to the point.
11557    */
11558   if (! GTK_WIDGET_VISIBLE (tree_view) ||
11559       ! GTK_WIDGET_REALIZED (tree_view) ||
11560       GTK_WIDGET_ALLOC_NEEDED (tree_view) ||
11561       GTK_RBNODE_FLAG_SET (tree_view->priv->tree->root, GTK_RBNODE_DESCENDANTS_INVALID))
11562     {
11563       if (tree_view->priv->scroll_to_path)
11564         gtk_tree_row_reference_free (tree_view->priv->scroll_to_path);
11565
11566       tree_view->priv->scroll_to_path = NULL;
11567       tree_view->priv->scroll_to_column = NULL;
11568
11569       if (path)
11570         tree_view->priv->scroll_to_path = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
11571       if (column)
11572         tree_view->priv->scroll_to_column = column;
11573       tree_view->priv->scroll_to_use_align = use_align;
11574       tree_view->priv->scroll_to_row_align = row_align;
11575       tree_view->priv->scroll_to_col_align = col_align;
11576
11577       install_presize_handler (tree_view);
11578     }
11579   else
11580     {
11581       GdkRectangle cell_rect;
11582       GdkRectangle vis_rect;
11583       gint dest_x, dest_y;
11584
11585       gtk_tree_view_get_background_area (tree_view, path, column, &cell_rect);
11586       gtk_tree_view_get_visible_rect (tree_view, &vis_rect);
11587
11588       cell_rect.y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, cell_rect.y);
11589
11590       dest_x = vis_rect.x;
11591       dest_y = vis_rect.y;
11592
11593       if (column)
11594         {
11595           if (use_align)
11596             {
11597               dest_x = cell_rect.x - ((vis_rect.width - cell_rect.width) * col_align);
11598             }
11599           else
11600             {
11601               if (cell_rect.x < vis_rect.x)
11602                 dest_x = cell_rect.x;
11603               if (cell_rect.x + cell_rect.width > vis_rect.x + vis_rect.width)
11604                 dest_x = cell_rect.x + cell_rect.width - vis_rect.width;
11605             }
11606         }
11607
11608       if (path)
11609         {
11610           if (use_align)
11611             {
11612               dest_y = cell_rect.y - ((vis_rect.height - cell_rect.height) * row_align);
11613               dest_y = MAX (dest_y, 0);
11614             }
11615           else
11616             {
11617               if (cell_rect.y < vis_rect.y)
11618                 dest_y = cell_rect.y;
11619               if (cell_rect.y + cell_rect.height > vis_rect.y + vis_rect.height)
11620                 dest_y = cell_rect.y + cell_rect.height - vis_rect.height;
11621             }
11622         }
11623
11624       gtk_tree_view_scroll_to_point (tree_view, dest_x, dest_y);
11625     }
11626 }
11627
11628 /**
11629  * gtk_tree_view_row_activated:
11630  * @tree_view: A #GtkTreeView
11631  * @path: The #GtkTreePath to be activated.
11632  * @column: The #GtkTreeViewColumn to be activated.
11633  *
11634  * Activates the cell determined by @path and @column.
11635  **/
11636 void
11637 gtk_tree_view_row_activated (GtkTreeView       *tree_view,
11638                              GtkTreePath       *path,
11639                              GtkTreeViewColumn *column)
11640 {
11641   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11642
11643   g_signal_emit (tree_view, tree_view_signals[ROW_ACTIVATED], 0, path, column);
11644 }
11645
11646
11647 static void
11648 gtk_tree_view_expand_all_emission_helper (GtkRBTree *tree,
11649                                           GtkRBNode *node,
11650                                           gpointer   data)
11651 {
11652   GtkTreeView *tree_view = data;
11653
11654   if ((node->flags & GTK_RBNODE_IS_PARENT) == GTK_RBNODE_IS_PARENT &&
11655       node->children)
11656     {
11657       GtkTreePath *path;
11658       GtkTreeIter iter;
11659
11660       path = _gtk_tree_view_find_path (tree_view, tree, node);
11661       gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11662
11663       g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11664
11665       gtk_tree_path_free (path);
11666     }
11667
11668   if (node->children)
11669     _gtk_rbtree_traverse (node->children,
11670                           node->children->root,
11671                           G_PRE_ORDER,
11672                           gtk_tree_view_expand_all_emission_helper,
11673                           tree_view);
11674 }
11675
11676 /**
11677  * gtk_tree_view_expand_all:
11678  * @tree_view: A #GtkTreeView.
11679  *
11680  * Recursively expands all nodes in the @tree_view.
11681  **/
11682 void
11683 gtk_tree_view_expand_all (GtkTreeView *tree_view)
11684 {
11685   GtkTreePath *path;
11686   GtkRBTree *tree;
11687   GtkRBNode *node;
11688
11689   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11690
11691   if (tree_view->priv->tree == NULL)
11692     return;
11693
11694   path = gtk_tree_path_new_first ();
11695   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
11696
11697   while (node)
11698     {
11699       gtk_tree_view_real_expand_row (tree_view, path, tree, node, TRUE, FALSE);
11700       node = _gtk_rbtree_next (tree, node);
11701       gtk_tree_path_next (path);
11702   }
11703
11704   gtk_tree_path_free (path);
11705 }
11706
11707 /* Timeout to animate the expander during expands and collapses */
11708 static gboolean
11709 expand_collapse_timeout (gpointer data)
11710 {
11711   return do_expand_collapse (data);
11712 }
11713
11714 static void
11715 add_expand_collapse_timeout (GtkTreeView *tree_view,
11716                              GtkRBTree   *tree,
11717                              GtkRBNode   *node,
11718                              gboolean     expand)
11719 {
11720   if (tree_view->priv->expand_collapse_timeout != 0)
11721     return;
11722
11723   tree_view->priv->expand_collapse_timeout =
11724       gdk_threads_add_timeout (50, expand_collapse_timeout, tree_view);
11725   tree_view->priv->expanded_collapsed_tree = tree;
11726   tree_view->priv->expanded_collapsed_node = node;
11727
11728   if (expand)
11729     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11730   else
11731     GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11732 }
11733
11734 static void
11735 remove_expand_collapse_timeout (GtkTreeView *tree_view)
11736 {
11737   if (tree_view->priv->expand_collapse_timeout)
11738     {
11739       g_source_remove (tree_view->priv->expand_collapse_timeout);
11740       tree_view->priv->expand_collapse_timeout = 0;
11741     }
11742
11743   if (tree_view->priv->expanded_collapsed_node != NULL)
11744     {
11745       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_EXPANDED);
11746       GTK_RBNODE_UNSET_FLAG (tree_view->priv->expanded_collapsed_node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11747
11748       tree_view->priv->expanded_collapsed_node = NULL;
11749     }
11750 }
11751
11752 static void
11753 cancel_arrow_animation (GtkTreeView *tree_view)
11754 {
11755   if (tree_view->priv->expand_collapse_timeout)
11756     {
11757       while (do_expand_collapse (tree_view));
11758
11759       remove_expand_collapse_timeout (tree_view);
11760     }
11761 }
11762
11763 static gboolean
11764 do_expand_collapse (GtkTreeView *tree_view)
11765 {
11766   GtkRBNode *node;
11767   GtkRBTree *tree;
11768   gboolean expanding;
11769   gboolean redraw;
11770
11771   redraw = FALSE;
11772   expanding = TRUE;
11773
11774   node = tree_view->priv->expanded_collapsed_node;
11775   tree = tree_view->priv->expanded_collapsed_tree;
11776
11777   if (node->children == NULL)
11778     expanding = FALSE;
11779
11780   if (expanding)
11781     {
11782       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11783         {
11784           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11785           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11786
11787           redraw = TRUE;
11788
11789         }
11790       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11791         {
11792           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11793
11794           redraw = TRUE;
11795         }
11796     }
11797   else
11798     {
11799       if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_EXPANDED))
11800         {
11801           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_EXPANDED);
11802           GTK_RBNODE_SET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11803
11804           redraw = TRUE;
11805         }
11806       else if (GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SEMI_COLLAPSED))
11807         {
11808           GTK_RBNODE_UNSET_FLAG (node, GTK_RBNODE_IS_SEMI_COLLAPSED);
11809
11810           redraw = TRUE;
11811
11812         }
11813     }
11814
11815   if (redraw)
11816     {
11817       gtk_tree_view_queue_draw_arrow (tree_view, tree, node, NULL);
11818
11819       return TRUE;
11820     }
11821
11822   return FALSE;
11823 }
11824
11825 /**
11826  * gtk_tree_view_collapse_all:
11827  * @tree_view: A #GtkTreeView.
11828  *
11829  * Recursively collapses all visible, expanded nodes in @tree_view.
11830  **/
11831 void
11832 gtk_tree_view_collapse_all (GtkTreeView *tree_view)
11833 {
11834   GtkRBTree *tree;
11835   GtkRBNode *node;
11836   GtkTreePath *path;
11837   gint *indices;
11838
11839   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11840
11841   if (tree_view->priv->tree == NULL)
11842     return;
11843
11844   path = gtk_tree_path_new ();
11845   gtk_tree_path_down (path);
11846   indices = gtk_tree_path_get_indices (path);
11847
11848   tree = tree_view->priv->tree;
11849   node = tree->root;
11850   while (node && node->left != tree->nil)
11851     node = node->left;
11852
11853   while (node)
11854     {
11855       if (node->children)
11856         gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
11857       indices[0]++;
11858       node = _gtk_rbtree_next (tree, node);
11859     }
11860
11861   gtk_tree_path_free (path);
11862 }
11863
11864 /**
11865  * gtk_tree_view_expand_to_path:
11866  * @tree_view: A #GtkTreeView.
11867  * @path: path to a row.
11868  *
11869  * Expands the row at @path. This will also expand all parent rows of
11870  * @path as necessary.
11871  *
11872  * Since: 2.2
11873  **/
11874 void
11875 gtk_tree_view_expand_to_path (GtkTreeView *tree_view,
11876                               GtkTreePath *path)
11877 {
11878   gint i, depth;
11879   gint *indices;
11880   GtkTreePath *tmp;
11881
11882   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
11883   g_return_if_fail (path != NULL);
11884
11885   depth = gtk_tree_path_get_depth (path);
11886   indices = gtk_tree_path_get_indices (path);
11887
11888   tmp = gtk_tree_path_new ();
11889   g_return_if_fail (tmp != NULL);
11890
11891   for (i = 0; i < depth; i++)
11892     {
11893       gtk_tree_path_append_index (tmp, indices[i]);
11894       gtk_tree_view_expand_row (tree_view, tmp, FALSE);
11895     }
11896
11897   gtk_tree_path_free (tmp);
11898 }
11899
11900 /* FIXME the bool return values for expand_row and collapse_row are
11901  * not analagous; they should be TRUE if the row had children and
11902  * was not already in the requested state.
11903  */
11904
11905
11906 static gboolean
11907 gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
11908                                GtkTreePath *path,
11909                                GtkRBTree   *tree,
11910                                GtkRBNode   *node,
11911                                gboolean     open_all,
11912                                gboolean     animate)
11913 {
11914   GtkTreeIter iter;
11915   GtkTreeIter temp;
11916   gboolean expand;
11917
11918   if (animate)
11919     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
11920                   "gtk-enable-animations", &animate,
11921                   NULL);
11922
11923   remove_auto_expand_timeout (tree_view);
11924
11925   if (node->children && !open_all)
11926     return FALSE;
11927
11928   if (! GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT))
11929     return FALSE;
11930
11931   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
11932   if (! gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
11933     return FALSE;
11934
11935
11936    if (node->children && open_all)
11937     {
11938       gboolean retval = FALSE;
11939       GtkTreePath *tmp_path = gtk_tree_path_copy (path);
11940
11941       gtk_tree_path_append_index (tmp_path, 0);
11942       tree = node->children;
11943       node = tree->root;
11944       while (node->left != tree->nil)
11945         node = node->left;
11946       /* try to expand the children */
11947       do
11948         {
11949          gboolean t;
11950          t = gtk_tree_view_real_expand_row (tree_view, tmp_path, tree, node,
11951                                             TRUE, animate);
11952          if (t)
11953            retval = TRUE;
11954
11955          gtk_tree_path_next (tmp_path);
11956          node = _gtk_rbtree_next (tree, node);
11957        }
11958       while (node != NULL);
11959
11960       gtk_tree_path_free (tmp_path);
11961
11962       return retval;
11963     }
11964
11965   g_signal_emit (tree_view, tree_view_signals[TEST_EXPAND_ROW], 0, &iter, path, &expand);
11966
11967   if (!gtk_tree_model_iter_has_child (tree_view->priv->model, &iter))
11968     return FALSE;
11969
11970   if (expand)
11971     return FALSE;
11972
11973   node->children = _gtk_rbtree_new ();
11974   node->children->parent_tree = tree;
11975   node->children->parent_node = node;
11976
11977   gtk_tree_model_iter_children (tree_view->priv->model, &temp, &iter);
11978
11979   gtk_tree_view_build_tree (tree_view,
11980                             node->children,
11981                             &temp,
11982                             gtk_tree_path_get_depth (path) + 1,
11983                             open_all);
11984
11985   remove_expand_collapse_timeout (tree_view);
11986
11987   if (animate)
11988     add_expand_collapse_timeout (tree_view, tree, node, TRUE);
11989
11990   install_presize_handler (tree_view);
11991
11992   g_signal_emit (tree_view, tree_view_signals[ROW_EXPANDED], 0, &iter, path);
11993   if (open_all && node->children)
11994     {
11995       _gtk_rbtree_traverse (node->children,
11996                             node->children->root,
11997                             G_PRE_ORDER,
11998                             gtk_tree_view_expand_all_emission_helper,
11999                             tree_view);
12000     }
12001   return TRUE;
12002 }
12003
12004
12005 /**
12006  * gtk_tree_view_expand_row:
12007  * @tree_view: a #GtkTreeView
12008  * @path: path to a row
12009  * @open_all: whether to recursively expand, or just expand immediate children
12010  *
12011  * Opens the row so its children are visible.
12012  *
12013  * Return value: %TRUE if the row existed and had children
12014  **/
12015 gboolean
12016 gtk_tree_view_expand_row (GtkTreeView *tree_view,
12017                           GtkTreePath *path,
12018                           gboolean     open_all)
12019 {
12020   GtkRBTree *tree;
12021   GtkRBNode *node;
12022
12023   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12024   g_return_val_if_fail (tree_view->priv->model != NULL, FALSE);
12025   g_return_val_if_fail (path != NULL, FALSE);
12026
12027   if (_gtk_tree_view_find_node (tree_view,
12028                                 path,
12029                                 &tree,
12030                                 &node))
12031     return FALSE;
12032
12033   if (tree != NULL)
12034     return gtk_tree_view_real_expand_row (tree_view, path, tree, node, open_all, FALSE);
12035   else
12036     return FALSE;
12037 }
12038
12039 static gboolean
12040 gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
12041                                  GtkTreePath *path,
12042                                  GtkRBTree   *tree,
12043                                  GtkRBNode   *node,
12044                                  gboolean     animate)
12045 {
12046   GtkTreeIter iter;
12047   GtkTreeIter children;
12048   gboolean collapse;
12049   gint x, y;
12050   GList *list;
12051   GdkWindow *child, *parent;
12052
12053   if (animate)
12054     g_object_get (gtk_widget_get_settings (GTK_WIDGET (tree_view)),
12055                   "gtk-enable-animations", &animate,
12056                   NULL);
12057
12058   remove_auto_expand_timeout (tree_view);
12059
12060   if (node->children == NULL)
12061     return FALSE;
12062
12063   gtk_tree_model_get_iter (tree_view->priv->model, &iter, path);
12064
12065   g_signal_emit (tree_view, tree_view_signals[TEST_COLLAPSE_ROW], 0, &iter, path, &collapse);
12066
12067   if (collapse)
12068     return FALSE;
12069
12070   /* if the prelighted node is a child of us, we want to unprelight it.  We have
12071    * a chance to prelight the correct node below */
12072
12073   if (tree_view->priv->prelight_tree)
12074     {
12075       GtkRBTree *parent_tree;
12076       GtkRBNode *parent_node;
12077
12078       parent_tree = tree_view->priv->prelight_tree->parent_tree;
12079       parent_node = tree_view->priv->prelight_tree->parent_node;
12080       while (parent_tree)
12081         {
12082           if (parent_tree == tree && parent_node == node)
12083             {
12084               ensure_unprelighted (tree_view);
12085               break;
12086             }
12087           parent_node = parent_tree->parent_node;
12088           parent_tree = parent_tree->parent_tree;
12089         }
12090     }
12091
12092   TREE_VIEW_INTERNAL_ASSERT (gtk_tree_model_iter_children (tree_view->priv->model, &children, &iter), FALSE);
12093
12094   for (list = tree_view->priv->columns; list; list = list->next)
12095     {
12096       GtkTreeViewColumn *column = list->data;
12097
12098       if (column->visible == FALSE)
12099         continue;
12100       if (gtk_tree_view_column_get_sizing (column) == GTK_TREE_VIEW_COLUMN_AUTOSIZE)
12101         _gtk_tree_view_column_cell_set_dirty (column, TRUE);
12102     }
12103
12104   if (tree_view->priv->destroy_count_func)
12105     {
12106       GtkTreePath *child_path;
12107       gint child_count = 0;
12108       child_path = gtk_tree_path_copy (path);
12109       gtk_tree_path_down (child_path);
12110       if (node->children)
12111         _gtk_rbtree_traverse (node->children, node->children->root, G_POST_ORDER, count_children_helper, &child_count);
12112       tree_view->priv->destroy_count_func (tree_view, child_path, child_count, tree_view->priv->destroy_count_data);
12113       gtk_tree_path_free (child_path);
12114     }
12115
12116   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12117     {
12118       GtkTreePath *cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12119
12120       if (gtk_tree_path_is_ancestor (path, cursor_path))
12121         {
12122           gtk_tree_row_reference_free (tree_view->priv->cursor);
12123           tree_view->priv->cursor = gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12124                                                                       tree_view->priv->model,
12125                                                                       path);
12126         }
12127       gtk_tree_path_free (cursor_path);
12128     }
12129
12130   if (gtk_tree_row_reference_valid (tree_view->priv->anchor))
12131     {
12132       GtkTreePath *anchor_path = gtk_tree_row_reference_get_path (tree_view->priv->anchor);
12133       if (gtk_tree_path_is_ancestor (path, anchor_path))
12134         {
12135           gtk_tree_row_reference_free (tree_view->priv->anchor);
12136           tree_view->priv->anchor = NULL;
12137         }
12138       gtk_tree_path_free (anchor_path);
12139     }
12140
12141   if (gtk_tree_row_reference_valid (tree_view->priv->last_button_press))
12142     {
12143       GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press);
12144       if (gtk_tree_path_is_ancestor (path, lsc))
12145         {
12146           gtk_tree_row_reference_free (tree_view->priv->last_button_press);
12147           tree_view->priv->last_button_press = NULL;
12148         }
12149       gtk_tree_path_free (lsc);
12150     }
12151
12152   if (gtk_tree_row_reference_valid (tree_view->priv->last_button_press_2))
12153     {
12154       GtkTreePath *lsc = gtk_tree_row_reference_get_path (tree_view->priv->last_button_press_2);
12155       if (gtk_tree_path_is_ancestor (path, lsc))
12156         {
12157           gtk_tree_row_reference_free (tree_view->priv->last_button_press_2);
12158           tree_view->priv->last_button_press_2 = NULL;
12159         }
12160       gtk_tree_path_free (lsc);
12161     }
12162
12163   remove_expand_collapse_timeout (tree_view);
12164
12165   if (gtk_tree_view_unref_and_check_selection_tree (tree_view, node->children))
12166     {
12167       _gtk_rbtree_remove (node->children);
12168       g_signal_emit_by_name (tree_view->priv->selection, "changed");
12169     }
12170   else
12171     _gtk_rbtree_remove (node->children);
12172
12173   if (animate)
12174     add_expand_collapse_timeout (tree_view, tree, node, FALSE);
12175
12176   if (GTK_WIDGET_MAPPED (tree_view))
12177     {
12178       gtk_widget_queue_resize (GTK_WIDGET (tree_view));
12179     }
12180
12181   g_signal_emit (tree_view, tree_view_signals[ROW_COLLAPSED], 0, &iter, path);
12182
12183   if (GTK_WIDGET_MAPPED (tree_view))
12184     {
12185       /* now that we've collapsed all rows, we want to try to set the prelight
12186        * again. To do this, we fake a motion event and send it to ourselves. */
12187
12188       child = tree_view->priv->bin_window;
12189       parent = gdk_window_get_parent (child);
12190
12191       if (gdk_window_get_pointer (parent, &x, &y, NULL) == child)
12192         {
12193           GdkEventMotion event;
12194           gint child_x, child_y;
12195
12196           gdk_window_get_position (child, &child_x, &child_y);
12197
12198           event.window = tree_view->priv->bin_window;
12199           event.x = x - child_x;
12200           event.y = y - child_y;
12201
12202           /* despite the fact this isn't a real event, I'm almost positive it will
12203            * never trigger a drag event.  maybe_drag is the only function that uses
12204            * more than just event.x and event.y. */
12205           gtk_tree_view_motion_bin_window (GTK_WIDGET (tree_view), &event);
12206         }
12207     }
12208
12209   return TRUE;
12210 }
12211
12212 /**
12213  * gtk_tree_view_collapse_row:
12214  * @tree_view: a #GtkTreeView
12215  * @path: path to a row in the @tree_view
12216  *
12217  * Collapses a row (hides its child rows, if they exist).
12218  *
12219  * Return value: %TRUE if the row was collapsed.
12220  **/
12221 gboolean
12222 gtk_tree_view_collapse_row (GtkTreeView *tree_view,
12223                             GtkTreePath *path)
12224 {
12225   GtkRBTree *tree;
12226   GtkRBNode *node;
12227
12228   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12229   g_return_val_if_fail (tree_view->priv->tree != NULL, FALSE);
12230   g_return_val_if_fail (path != NULL, FALSE);
12231
12232   if (_gtk_tree_view_find_node (tree_view,
12233                                 path,
12234                                 &tree,
12235                                 &node))
12236     return FALSE;
12237
12238   if (tree == NULL || node->children == NULL)
12239     return FALSE;
12240
12241   return gtk_tree_view_real_collapse_row (tree_view, path, tree, node, FALSE);
12242 }
12243
12244 static void
12245 gtk_tree_view_map_expanded_rows_helper (GtkTreeView            *tree_view,
12246                                         GtkRBTree              *tree,
12247                                         GtkTreePath            *path,
12248                                         GtkTreeViewMappingFunc  func,
12249                                         gpointer                user_data)
12250 {
12251   GtkRBNode *node;
12252
12253   if (tree == NULL || tree->root == NULL)
12254     return;
12255
12256   node = tree->root;
12257
12258   while (node && node->left != tree->nil)
12259     node = node->left;
12260
12261   while (node)
12262     {
12263       if (node->children)
12264         {
12265           (* func) (tree_view, path, user_data);
12266           gtk_tree_path_down (path);
12267           gtk_tree_view_map_expanded_rows_helper (tree_view, node->children, path, func, user_data);
12268           gtk_tree_path_up (path);
12269         }
12270       gtk_tree_path_next (path);
12271       node = _gtk_rbtree_next (tree, node);
12272     }
12273 }
12274
12275 /**
12276  * gtk_tree_view_map_expanded_rows:
12277  * @tree_view: A #GtkTreeView
12278  * @func: A function to be called
12279  * @data: User data to be passed to the function.
12280  *
12281  * Calls @func on all expanded rows.
12282  **/
12283 void
12284 gtk_tree_view_map_expanded_rows (GtkTreeView            *tree_view,
12285                                  GtkTreeViewMappingFunc  func,
12286                                  gpointer                user_data)
12287 {
12288   GtkTreePath *path;
12289
12290   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12291   g_return_if_fail (func != NULL);
12292
12293   path = gtk_tree_path_new_first ();
12294
12295   gtk_tree_view_map_expanded_rows_helper (tree_view,
12296                                           tree_view->priv->tree,
12297                                           path, func, user_data);
12298
12299   gtk_tree_path_free (path);
12300 }
12301
12302 /**
12303  * gtk_tree_view_row_expanded:
12304  * @tree_view: A #GtkTreeView.
12305  * @path: A #GtkTreePath to test expansion state.
12306  *
12307  * Returns %TRUE if the node pointed to by @path is expanded in @tree_view.
12308  *
12309  * Return value: %TRUE if #path is expanded.
12310  **/
12311 gboolean
12312 gtk_tree_view_row_expanded (GtkTreeView *tree_view,
12313                             GtkTreePath *path)
12314 {
12315   GtkRBTree *tree;
12316   GtkRBNode *node;
12317
12318   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12319   g_return_val_if_fail (path != NULL, FALSE);
12320
12321   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12322
12323   if (node == NULL)
12324     return FALSE;
12325
12326   return (node->children != NULL);
12327 }
12328
12329 /**
12330  * gtk_tree_view_get_reorderable:
12331  * @tree_view: a #GtkTreeView
12332  *
12333  * Retrieves whether the user can reorder the tree via drag-and-drop. See
12334  * gtk_tree_view_set_reorderable().
12335  *
12336  * Return value: %TRUE if the tree can be reordered.
12337  **/
12338 gboolean
12339 gtk_tree_view_get_reorderable (GtkTreeView *tree_view)
12340 {
12341   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
12342
12343   return tree_view->priv->reorderable;
12344 }
12345
12346 /**
12347  * gtk_tree_view_set_reorderable:
12348  * @tree_view: A #GtkTreeView.
12349  * @reorderable: %TRUE, if the tree can be reordered.
12350  *
12351  * This function is a convenience function to allow you to reorder
12352  * models that support the #GtkDragSourceIface and the
12353  * #GtkDragDestIface.  Both #GtkTreeStore and #GtkListStore support
12354  * these.  If @reorderable is %TRUE, then the user can reorder the
12355  * model by dragging and dropping rows. The developer can listen to
12356  * these changes by connecting to the model's row_inserted and
12357  * row_deleted signals. The reordering is implemented by setting up
12358  * the tree view as a drag source and destination. Therefore, drag and
12359  * drop can not be used in a reorderable view for any other purpose.
12360  *
12361  * This function does not give you any degree of control over the order -- any
12362  * reordering is allowed.  If more control is needed, you should probably
12363  * handle drag and drop manually.
12364  **/
12365 void
12366 gtk_tree_view_set_reorderable (GtkTreeView *tree_view,
12367                                gboolean     reorderable)
12368 {
12369   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12370
12371   reorderable = reorderable != FALSE;
12372
12373   if (tree_view->priv->reorderable == reorderable)
12374     return;
12375
12376   if (reorderable)
12377     {
12378       const GtkTargetEntry row_targets[] = {
12379         { "GTK_TREE_MODEL_ROW", GTK_TARGET_SAME_WIDGET, 0 }
12380       };
12381
12382       gtk_tree_view_enable_model_drag_source (tree_view,
12383                                               GDK_BUTTON1_MASK,
12384                                               row_targets,
12385                                               G_N_ELEMENTS (row_targets),
12386                                               GDK_ACTION_MOVE);
12387       gtk_tree_view_enable_model_drag_dest (tree_view,
12388                                             row_targets,
12389                                             G_N_ELEMENTS (row_targets),
12390                                             GDK_ACTION_MOVE);
12391     }
12392   else
12393     {
12394       gtk_tree_view_unset_rows_drag_source (tree_view);
12395       gtk_tree_view_unset_rows_drag_dest (tree_view);
12396     }
12397
12398   tree_view->priv->reorderable = reorderable;
12399
12400   g_object_notify (G_OBJECT (tree_view), "reorderable");
12401 }
12402
12403 static void
12404 gtk_tree_view_real_set_cursor (GtkTreeView     *tree_view,
12405                                GtkTreePath     *path,
12406                                gboolean         clear_and_select,
12407                                gboolean         clamp_node)
12408 {
12409   GtkRBTree *tree = NULL;
12410   GtkRBNode *node = NULL;
12411
12412   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12413     {
12414       GtkTreePath *cursor_path;
12415       cursor_path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12416       gtk_tree_view_queue_draw_path (tree_view, cursor_path, NULL);
12417       gtk_tree_path_free (cursor_path);
12418     }
12419
12420   gtk_tree_row_reference_free (tree_view->priv->cursor);
12421   tree_view->priv->cursor = NULL;
12422
12423   /* One cannot set the cursor on a separator. */
12424   if (!row_is_separator (tree_view, NULL, path))
12425     {
12426       tree_view->priv->cursor =
12427         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view),
12428                                           tree_view->priv->model,
12429                                           path);
12430       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12431     }
12432
12433   if (tree != NULL)
12434     {
12435       GtkRBTree *new_tree = NULL;
12436       GtkRBNode *new_node = NULL;
12437
12438       if (clear_and_select && !tree_view->priv->ctrl_pressed)
12439         {
12440           GtkTreeSelectMode mode = 0;
12441
12442           if (tree_view->priv->ctrl_pressed)
12443             mode |= GTK_TREE_SELECT_MODE_TOGGLE;
12444           if (tree_view->priv->shift_pressed)
12445             mode |= GTK_TREE_SELECT_MODE_EXTEND;
12446
12447           _gtk_tree_selection_internal_select_node (tree_view->priv->selection,
12448                                                     node, tree, path, mode,
12449                                                     FALSE);
12450         }
12451
12452       /* We have to re-find tree and node here again, somebody might have
12453        * cleared the node or the whole tree in the GtkTreeSelection::changed
12454        * callback. If the nodes differ we bail out here.
12455        */
12456       _gtk_tree_view_find_node (tree_view, path, &new_tree, &new_node);
12457
12458       if (tree != new_tree || node != new_node)
12459         return;
12460
12461       if (clamp_node)
12462         {
12463           gtk_tree_view_clamp_node_visible (tree_view, tree, node);
12464           _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
12465         }
12466     }
12467
12468   g_signal_emit (tree_view, tree_view_signals[CURSOR_CHANGED], 0);
12469 }
12470
12471 /**
12472  * gtk_tree_view_get_cursor:
12473  * @tree_view: A #GtkTreeView
12474  * @path: A pointer to be filled with the current cursor path, or %NULL
12475  * @focus_column: A pointer to be filled with the current focus column, or %NULL
12476  *
12477  * Fills in @path and @focus_column with the current path and focus column.  If
12478  * the cursor isn't currently set, then *@path will be %NULL.  If no column
12479  * currently has focus, then *@focus_column will be %NULL.
12480  *
12481  * The returned #GtkTreePath must be freed with gtk_tree_path_free() when
12482  * you are done with it.
12483  **/
12484 void
12485 gtk_tree_view_get_cursor (GtkTreeView        *tree_view,
12486                           GtkTreePath       **path,
12487                           GtkTreeViewColumn **focus_column)
12488 {
12489   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12490
12491   if (path)
12492     {
12493       if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
12494         *path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
12495       else
12496         *path = NULL;
12497     }
12498
12499   if (focus_column)
12500     {
12501       *focus_column = tree_view->priv->focus_column;
12502     }
12503 }
12504
12505 /**
12506  * gtk_tree_view_set_cursor:
12507  * @tree_view: A #GtkTreeView
12508  * @path: A #GtkTreePath
12509  * @focus_column: A #GtkTreeViewColumn, or %NULL
12510  * @start_editing: %TRUE if the specified cell should start being edited.
12511  *
12512  * Sets the current keyboard focus to be at @path, and selects it.  This is
12513  * useful when you want to focus the user's attention on a particular row.  If
12514  * @focus_column is not %NULL, then focus is given to the column specified by
12515  * it. Additionally, if @focus_column is specified, and @start_editing is
12516  * %TRUE, then editing should be started in the specified cell.
12517  * This function is often followed by @gtk_widget_grab_focus (@tree_view)
12518  * in order to give keyboard focus to the widget.  Please note that editing
12519  * can only happen when the widget is realized.
12520  *
12521  * If @path is invalid for @model, the current cursor (if any) will be unset
12522  * and the function will return without failing.
12523  **/
12524 void
12525 gtk_tree_view_set_cursor (GtkTreeView       *tree_view,
12526                           GtkTreePath       *path,
12527                           GtkTreeViewColumn *focus_column,
12528                           gboolean           start_editing)
12529 {
12530   gtk_tree_view_set_cursor_on_cell (tree_view, path, focus_column,
12531                                     NULL, start_editing);
12532 }
12533
12534 /**
12535  * gtk_tree_view_set_cursor_on_cell:
12536  * @tree_view: A #GtkTreeView
12537  * @path: A #GtkTreePath
12538  * @focus_column: A #GtkTreeViewColumn, or %NULL
12539  * @focus_cell: A #GtkCellRenderer, or %NULL
12540  * @start_editing: %TRUE if the specified cell should start being edited.
12541  *
12542  * Sets the current keyboard focus to be at @path, and selects it.  This is
12543  * useful when you want to focus the user's attention on a particular row.  If
12544  * @focus_column is not %NULL, then focus is given to the column specified by
12545  * it. If @focus_column and @focus_cell are not %NULL, and @focus_column
12546  * contains 2 or more editable or activatable cells, then focus is given to
12547  * the cell specified by @focus_cell. Additionally, if @focus_column is
12548  * specified, and @start_editing is %TRUE, then editing should be started in
12549  * the specified cell.  This function is often followed by
12550  * @gtk_widget_grab_focus (@tree_view) in order to give keyboard focus to the
12551  * widget.  Please note that editing can only happen when the widget is
12552  * realized.
12553  *
12554  * If @path is invalid for @model, the current cursor (if any) will be unset
12555  * and the function will return without failing.
12556  *
12557  * Since: 2.2
12558  **/
12559 void
12560 gtk_tree_view_set_cursor_on_cell (GtkTreeView       *tree_view,
12561                                   GtkTreePath       *path,
12562                                   GtkTreeViewColumn *focus_column,
12563                                   GtkCellRenderer   *focus_cell,
12564                                   gboolean           start_editing)
12565 {
12566   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12567   g_return_if_fail (path != NULL);
12568   g_return_if_fail (focus_column == NULL || GTK_IS_TREE_VIEW_COLUMN (focus_column));
12569
12570   if (!tree_view->priv->model)
12571     return;
12572
12573   if (focus_cell)
12574     {
12575       g_return_if_fail (focus_column);
12576       g_return_if_fail (GTK_IS_CELL_RENDERER (focus_cell));
12577     }
12578
12579   /* cancel the current editing, if it exists */
12580   if (tree_view->priv->edited_column &&
12581       tree_view->priv->edited_column->editable_widget)
12582     gtk_tree_view_stop_editing (tree_view, TRUE);
12583
12584   gtk_tree_view_real_set_cursor (tree_view, path, TRUE, TRUE);
12585
12586   if (focus_column && focus_column->visible)
12587     {
12588       GList *list;
12589       gboolean column_in_tree = FALSE;
12590
12591       for (list = tree_view->priv->columns; list; list = list->next)
12592         if (list->data == focus_column)
12593           {
12594             column_in_tree = TRUE;
12595             break;
12596           }
12597       g_return_if_fail (column_in_tree);
12598       tree_view->priv->focus_column = focus_column;
12599       if (focus_cell)
12600         gtk_tree_view_column_focus_cell (focus_column, focus_cell);
12601       if (start_editing)
12602         gtk_tree_view_start_editing (tree_view, path);
12603     }
12604 }
12605
12606 /**
12607  * gtk_tree_view_get_bin_window:
12608  * @tree_view: A #GtkTreeView
12609  *
12610  * Returns the window that @tree_view renders to.  This is used primarily to
12611  * compare to <literal>event->window</literal> to confirm that the event on
12612  * @tree_view is on the right window.
12613  *
12614  * Return value: A #GdkWindow, or %NULL when @tree_view hasn't been realized yet
12615  **/
12616 GdkWindow *
12617 gtk_tree_view_get_bin_window (GtkTreeView *tree_view)
12618 {
12619   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
12620
12621   return tree_view->priv->bin_window;
12622 }
12623
12624 /**
12625  * gtk_tree_view_get_path_at_pos:
12626  * @tree_view: A #GtkTreeView.
12627  * @x: The x position to be identified (relative to bin_window).
12628  * @y: The y position to be identified (relative to bin_window).
12629  * @path: A pointer to a #GtkTreePath pointer to be filled in, or %NULL
12630  * @column: A pointer to a #GtkTreeViewColumn pointer to be filled in, or %NULL
12631  * @cell_x: A pointer where the X coordinate relative to the cell can be placed, or %NULL
12632  * @cell_y: A pointer where the Y coordinate relative to the cell can be placed, or %NULL
12633  *
12634  * Finds the path at the point (@x, @y), relative to bin_window coordinates
12635  * (please see gtk_tree_view_get_bin_window()).
12636  * That is, @x and @y are relative to an events coordinates. @x and @y must
12637  * come from an event on the @tree_view only where <literal>event->window ==
12638  * gtk_tree_view_get_bin_window (<!-- -->)</literal>. It is primarily for
12639  * things like popup menus. If @path is non-%NULL, then it will be filled
12640  * with the #GtkTreePath at that point.  This path should be freed with
12641  * gtk_tree_path_free().  If @column is non-%NULL, then it will be filled
12642  * with the column at that point.  @cell_x and @cell_y return the coordinates
12643  * relative to the cell background (i.e. the @background_area passed to
12644  * gtk_cell_renderer_render()).  This function is only meaningful if
12645  * @tree_view is realized.  Therefore this function will always return %FALSE
12646  * if @tree_view is not realized or does not have a model.
12647  *
12648  * For converting widget coordinates (eg. the ones you get from
12649  * GtkWidget::query-tooltip), please see
12650  * gtk_tree_view_convert_widget_to_bin_window_coords().
12651  *
12652  * Return value: %TRUE if a row exists at that coordinate.
12653  **/
12654 gboolean
12655 gtk_tree_view_get_path_at_pos (GtkTreeView        *tree_view,
12656                                gint                x,
12657                                gint                y,
12658                                GtkTreePath       **path,
12659                                GtkTreeViewColumn **column,
12660                                gint               *cell_x,
12661                                gint               *cell_y)
12662 {
12663   GtkRBTree *tree;
12664   GtkRBNode *node;
12665   gint y_offset;
12666
12667   g_return_val_if_fail (tree_view != NULL, FALSE);
12668
12669   if (path)
12670     *path = NULL;
12671   if (column)
12672     *column = NULL;
12673
12674   if (tree_view->priv->bin_window == NULL)
12675     return FALSE;
12676
12677   if (tree_view->priv->tree == NULL)
12678     return FALSE;
12679
12680   if (x > tree_view->priv->hadjustment->upper)
12681     return FALSE;
12682
12683   if (x < 0 || y < 0)
12684     return FALSE;
12685
12686   if (column || cell_x)
12687     {
12688       GtkTreeViewColumn *tmp_column;
12689       GtkTreeViewColumn *last_column = NULL;
12690       GList *list;
12691       gint remaining_x = x;
12692       gboolean found = FALSE;
12693       gboolean rtl;
12694
12695       rtl = (gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL);
12696       for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
12697            list;
12698            list = (rtl ? list->prev : list->next))
12699         {
12700           tmp_column = list->data;
12701
12702           if (tmp_column->visible == FALSE)
12703             continue;
12704
12705           last_column = tmp_column;
12706           if (remaining_x <= tmp_column->width)
12707             {
12708               found = TRUE;
12709
12710               if (column)
12711                 *column = tmp_column;
12712
12713               if (cell_x)
12714                 *cell_x = remaining_x;
12715
12716               break;
12717             }
12718           remaining_x -= tmp_column->width;
12719         }
12720
12721       /* If found is FALSE and there is a last_column, then it the remainder
12722        * space is in that area
12723        */
12724       if (!found)
12725         {
12726           if (last_column)
12727             {
12728               if (column)
12729                 *column = last_column;
12730
12731               if (cell_x)
12732                 *cell_x = last_column->width + remaining_x;
12733             }
12734           else
12735             {
12736               return FALSE;
12737             }
12738         }
12739     }
12740
12741   y_offset = _gtk_rbtree_find_offset (tree_view->priv->tree,
12742                                       TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, y),
12743                                       &tree, &node);
12744
12745   if (tree == NULL)
12746     return FALSE;
12747
12748   if (cell_y)
12749     *cell_y = y_offset;
12750
12751   if (path)
12752     *path = _gtk_tree_view_find_path (tree_view, tree, node);
12753
12754   return TRUE;
12755 }
12756
12757
12758 /**
12759  * gtk_tree_view_get_cell_area:
12760  * @tree_view: a #GtkTreeView
12761  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12762  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordinates
12763  * @rect: rectangle to fill with cell rect
12764  *
12765  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12766  * row specified by @path and the column specified by @column.  If @path is
12767  * %NULL, or points to a path not currently displayed, the @y and @height fields
12768  * of the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12769  * fields will be filled with 0.  The sum of all cell rects does not cover the
12770  * entire tree; there are extra pixels in between rows, for example. The
12771  * returned rectangle is equivalent to the @cell_area passed to
12772  * gtk_cell_renderer_render().  This function is only valid if @tree_view is
12773  * realized.
12774  **/
12775 void
12776 gtk_tree_view_get_cell_area (GtkTreeView        *tree_view,
12777                              GtkTreePath        *path,
12778                              GtkTreeViewColumn  *column,
12779                              GdkRectangle       *rect)
12780 {
12781   GtkRBTree *tree = NULL;
12782   GtkRBNode *node = NULL;
12783   gint vertical_separator;
12784   gint horizontal_separator;
12785
12786   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12787   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12788   g_return_if_fail (rect != NULL);
12789   g_return_if_fail (!column || column->tree_view == (GtkWidget *) tree_view);
12790   g_return_if_fail (GTK_WIDGET_REALIZED (tree_view));
12791
12792   gtk_widget_style_get (GTK_WIDGET (tree_view),
12793                         "vertical-separator", &vertical_separator,
12794                         "horizontal-separator", &horizontal_separator,
12795                         NULL);
12796
12797   rect->x = 0;
12798   rect->y = 0;
12799   rect->width = 0;
12800   rect->height = 0;
12801
12802   if (column)
12803     {
12804       rect->x = column->button->allocation.x + horizontal_separator/2;
12805       rect->width = column->button->allocation.width - horizontal_separator;
12806     }
12807
12808   if (path)
12809     {
12810       gboolean ret = _gtk_tree_view_find_node (tree_view, path, &tree, &node);
12811
12812       /* Get vertical coords */
12813       if ((!ret && tree == NULL) || ret)
12814         return;
12815
12816       rect->y = CELL_FIRST_PIXEL (tree_view, tree, node, vertical_separator);
12817       rect->height = MAX (CELL_HEIGHT (node, vertical_separator), tree_view->priv->expander_size - vertical_separator);
12818
12819       if (column &&
12820           gtk_tree_view_is_expander_column (tree_view, column))
12821         {
12822           gint depth = gtk_tree_path_get_depth (path);
12823           gboolean rtl;
12824
12825           rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
12826
12827           if (!rtl)
12828             rect->x += (depth - 1) * tree_view->priv->level_indentation;
12829           rect->width -= (depth - 1) * tree_view->priv->level_indentation;
12830
12831           if (TREE_VIEW_DRAW_EXPANDERS (tree_view))
12832             {
12833               if (!rtl)
12834                 rect->x += depth * tree_view->priv->expander_size;
12835               rect->width -= depth * tree_view->priv->expander_size;
12836             }
12837
12838           rect->width = MAX (rect->width, 0);
12839         }
12840     }
12841 }
12842
12843 /**
12844  * gtk_tree_view_get_background_area:
12845  * @tree_view: a #GtkTreeView
12846  * @path: a #GtkTreePath for the row, or %NULL to get only horizontal coordinates
12847  * @column: a #GtkTreeViewColumn for the column, or %NULL to get only vertical coordiantes
12848  * @rect: rectangle to fill with cell background rect
12849  *
12850  * Fills the bounding rectangle in bin_window coordinates for the cell at the
12851  * row specified by @path and the column specified by @column.  If @path is
12852  * %NULL, or points to a node not found in the tree, the @y and @height fields of
12853  * the rectangle will be filled with 0. If @column is %NULL, the @x and @width
12854  * fields will be filled with 0.  The returned rectangle is equivalent to the
12855  * @background_area passed to gtk_cell_renderer_render().  These background
12856  * areas tile to cover the entire bin window.  Contrast with the @cell_area,
12857  * returned by gtk_tree_view_get_cell_area(), which returns only the cell
12858  * itself, excluding surrounding borders and the tree expander area.
12859  *
12860  **/
12861 void
12862 gtk_tree_view_get_background_area (GtkTreeView        *tree_view,
12863                                    GtkTreePath        *path,
12864                                    GtkTreeViewColumn  *column,
12865                                    GdkRectangle       *rect)
12866 {
12867   GtkRBTree *tree = NULL;
12868   GtkRBNode *node = NULL;
12869
12870   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12871   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
12872   g_return_if_fail (rect != NULL);
12873
12874   rect->x = 0;
12875   rect->y = 0;
12876   rect->width = 0;
12877   rect->height = 0;
12878
12879   if (path)
12880     {
12881       /* Get vertical coords */
12882
12883       if (!_gtk_tree_view_find_node (tree_view, path, &tree, &node) &&
12884           tree == NULL)
12885         return;
12886
12887       rect->y = BACKGROUND_FIRST_PIXEL (tree_view, tree, node);
12888
12889       rect->height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
12890     }
12891
12892   if (column)
12893     {
12894       gint x2 = 0;
12895
12896       gtk_tree_view_get_background_xrange (tree_view, tree, column, &rect->x, &x2);
12897       rect->width = x2 - rect->x;
12898     }
12899 }
12900
12901 /**
12902  * gtk_tree_view_get_visible_rect:
12903  * @tree_view: a #GtkTreeView
12904  * @visible_rect: rectangle to fill
12905  *
12906  * Fills @visible_rect with the currently-visible region of the
12907  * buffer, in tree coordinates. Convert to bin_window coordinates with
12908  * gtk_tree_view_convert_tree_to_bin_window_coords().
12909  * Tree coordinates start at 0,0 for row 0 of the tree, and cover the entire
12910  * scrollable area of the tree.
12911  **/
12912 void
12913 gtk_tree_view_get_visible_rect (GtkTreeView  *tree_view,
12914                                 GdkRectangle *visible_rect)
12915 {
12916   GtkWidget *widget;
12917
12918   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12919
12920   widget = GTK_WIDGET (tree_view);
12921
12922   if (visible_rect)
12923     {
12924       visible_rect->x = tree_view->priv->hadjustment->value;
12925       visible_rect->y = tree_view->priv->vadjustment->value;
12926       visible_rect->width = widget->allocation.width;
12927       visible_rect->height = widget->allocation.height - TREE_VIEW_HEADER_HEIGHT (tree_view);
12928     }
12929 }
12930
12931 /**
12932  * gtk_tree_view_widget_to_tree_coords:
12933  * @tree_view: a #GtkTreeView
12934  * @wx: X coordinate relative to bin_window
12935  * @wy: Y coordinate relative to bin_window
12936  * @tx: return location for tree X coordinate
12937  * @ty: return location for tree Y coordinate
12938  *
12939  * Converts bin_window coordinates to coordinates for the
12940  * tree (the full scrollable area of the tree).
12941  *
12942  * Deprecated: 2.12: Due to historial reasons the name of this function is
12943  * incorrect.  For converting coordinates relative to the widget to
12944  * bin_window coordinates, please see
12945  * gtk_tree_view_convert_widget_to_bin_window_coords().
12946  *
12947  **/
12948 void
12949 gtk_tree_view_widget_to_tree_coords (GtkTreeView *tree_view,
12950                                       gint         wx,
12951                                       gint         wy,
12952                                       gint        *tx,
12953                                       gint        *ty)
12954 {
12955   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12956
12957   if (tx)
12958     *tx = wx + tree_view->priv->hadjustment->value;
12959   if (ty)
12960     *ty = wy + tree_view->priv->dy;
12961 }
12962
12963 /**
12964  * gtk_tree_view_tree_to_widget_coords:
12965  * @tree_view: a #GtkTreeView
12966  * @tx: tree X coordinate
12967  * @ty: tree Y coordinate
12968  * @wx: return location for X coordinate relative to bin_window
12969  * @wy: return location for Y coordinate relative to bin_window
12970  *
12971  * Converts tree coordinates (coordinates in full scrollable area of the tree)
12972  * to bin_window coordinates.
12973  *
12974  * Deprecated: 2.12: Due to historial reasons the name of this function is
12975  * incorrect.  For converting bin_window coordinates to coordinates relative
12976  * to bin_window, please see
12977  * gtk_tree_view_convert_bin_window_to_widget_coords().
12978  *
12979  **/
12980 void
12981 gtk_tree_view_tree_to_widget_coords (GtkTreeView *tree_view,
12982                                      gint         tx,
12983                                      gint         ty,
12984                                      gint        *wx,
12985                                      gint        *wy)
12986 {
12987   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
12988
12989   if (wx)
12990     *wx = tx - tree_view->priv->hadjustment->value;
12991   if (wy)
12992     *wy = ty - tree_view->priv->dy;
12993 }
12994
12995
12996 /**
12997  * gtk_tree_view_convert_widget_to_tree_coords:
12998  * @tree_view: a #GtkTreeView
12999  * @wx: X coordinate relative to the widget
13000  * @wy: Y coordinate relative to the widget
13001  * @tx: return location for tree X coordinate
13002  * @ty: return location for tree Y coordinate
13003  *
13004  * Converts widget coordinates to coordinates for the
13005  * tree (the full scrollable area of the tree).
13006  *
13007  * Since: 2.12
13008  **/
13009 void
13010 gtk_tree_view_convert_widget_to_tree_coords (GtkTreeView *tree_view,
13011                                              gint         wx,
13012                                              gint         wy,
13013                                              gint        *tx,
13014                                              gint        *ty)
13015 {
13016   gint x, y;
13017
13018   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13019
13020   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view,
13021                                                      wx, wy,
13022                                                      &x, &y);
13023   gtk_tree_view_convert_bin_window_to_tree_coords (tree_view,
13024                                                    x, y,
13025                                                    tx, ty);
13026 }
13027
13028 /**
13029  * gtk_tree_view_convert_tree_to_widget_coords:
13030  * @tree_view: a #GtkTreeView
13031  * @tx: X coordinate relative to the tree
13032  * @ty: Y coordinate relative to the tree
13033  * @wx: return location for widget X coordinate
13034  * @wy: return location for widget Y coordinate
13035  *
13036  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13037  * to widget coordinates.
13038  *
13039  * Since: 2.12
13040  **/
13041 void
13042 gtk_tree_view_convert_tree_to_widget_coords (GtkTreeView *tree_view,
13043                                              gint         tx,
13044                                              gint         ty,
13045                                              gint        *wx,
13046                                              gint        *wy)
13047 {
13048   gint x, y;
13049
13050   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13051
13052   gtk_tree_view_convert_tree_to_bin_window_coords (tree_view,
13053                                                    tx, ty,
13054                                                    &x, &y);
13055   gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
13056                                                      x, y,
13057                                                      wx, wy);
13058 }
13059
13060 /**
13061  * gtk_tree_view_convert_widget_to_bin_window_coords:
13062  * @tree_view: a #GtkTreeView
13063  * @wx: X coordinate relative to the widget
13064  * @wy: Y coordinate relative to the widget
13065  * @bx: return location for bin_window X coordinate
13066  * @by: return location for bin_window Y coordinate
13067  *
13068  * Converts widget coordinates to coordinates for the bin_window
13069  * (see gtk_tree_view_get_bin_window()).
13070  *
13071  * Since: 2.12
13072  **/
13073 void
13074 gtk_tree_view_convert_widget_to_bin_window_coords (GtkTreeView *tree_view,
13075                                                    gint         wx,
13076                                                    gint         wy,
13077                                                    gint        *bx,
13078                                                    gint        *by)
13079 {
13080   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13081
13082   if (bx)
13083     *bx = wx + tree_view->priv->hadjustment->value;
13084   if (by)
13085     *by = wy - TREE_VIEW_HEADER_HEIGHT (tree_view);
13086 }
13087
13088 /**
13089  * gtk_tree_view_convert_bin_window_to_widget_coords:
13090  * @tree_view: a #GtkTreeView
13091  * @bx: bin_window X coordinate
13092  * @by: bin_window Y coordinate
13093  * @wx: return location for widget X coordinate
13094  * @wy: return location for widget Y coordinate
13095  *
13096  * Converts bin_window coordinates (see gtk_tree_view_get_bin_window())
13097  * to widget relative coordinates.
13098  *
13099  * Since: 2.12
13100  **/
13101 void
13102 gtk_tree_view_convert_bin_window_to_widget_coords (GtkTreeView *tree_view,
13103                                                    gint         bx,
13104                                                    gint         by,
13105                                                    gint        *wx,
13106                                                    gint        *wy)
13107 {
13108   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13109
13110   if (wx)
13111     *wx = bx - tree_view->priv->hadjustment->value;
13112   if (wy)
13113     *wy = by + TREE_VIEW_HEADER_HEIGHT (tree_view);
13114 }
13115
13116 /**
13117  * gtk_tree_view_convert_tree_to_bin_window_coords:
13118  * @tree_view: a #GtkTreeView
13119  * @tx: tree X coordinate
13120  * @ty: tree Y coordinate
13121  * @bx: return location for X coordinate relative to bin_window
13122  * @by: return location for Y coordinate relative to bin_window
13123  *
13124  * Converts tree coordinates (coordinates in full scrollable area of the tree)
13125  * to bin_window coordinates.
13126  *
13127  * Since: 2.12
13128  **/
13129 void
13130 gtk_tree_view_convert_tree_to_bin_window_coords (GtkTreeView *tree_view,
13131                                                  gint         tx,
13132                                                  gint         ty,
13133                                                  gint        *bx,
13134                                                  gint        *by)
13135 {
13136   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13137
13138   if (bx)
13139     *bx = tx;
13140   if (by)
13141     *by = ty - tree_view->priv->dy;
13142 }
13143
13144 /**
13145  * gtk_tree_view_convert_bin_window_to_tree_coords:
13146  * @tree_view: a #GtkTreeView
13147  * @bx: X coordinate relative to bin_window
13148  * @by: Y coordinate relative to bin_window
13149  * @tx: return location for tree X coordinate
13150  * @ty: return location for tree Y coordinate
13151  *
13152  * Converts bin_window coordinates to coordinates for the
13153  * tree (the full scrollable area of the tree).
13154  *
13155  * Since: 2.12
13156  **/
13157 void
13158 gtk_tree_view_convert_bin_window_to_tree_coords (GtkTreeView *tree_view,
13159                                                  gint         bx,
13160                                                  gint         by,
13161                                                  gint        *tx,
13162                                                  gint        *ty)
13163 {
13164   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13165
13166   if (tx)
13167     *tx = bx;
13168   if (ty)
13169     *ty = by + tree_view->priv->dy;
13170 }
13171
13172
13173
13174 /**
13175  * gtk_tree_view_get_visible_range:
13176  * @tree_view: A #GtkTreeView
13177  * @start_path: Return location for start of region, or %NULL.
13178  * @end_path: Return location for end of region, or %NULL.
13179  *
13180  * Sets @start_path and @end_path to be the first and last visible path.
13181  * Note that there may be invisible paths in between.
13182  *
13183  * The paths should be freed with gtk_tree_path_free() after use.
13184  *
13185  * Returns: %TRUE, if valid paths were placed in @start_path and @end_path.
13186  *
13187  * Since: 2.8
13188  **/
13189 gboolean
13190 gtk_tree_view_get_visible_range (GtkTreeView  *tree_view,
13191                                  GtkTreePath **start_path,
13192                                  GtkTreePath **end_path)
13193 {
13194   GtkRBTree *tree;
13195   GtkRBNode *node;
13196   gboolean retval;
13197
13198   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13199
13200   if (!tree_view->priv->tree)
13201     return FALSE;
13202
13203   retval = TRUE;
13204
13205   if (start_path)
13206     {
13207       _gtk_rbtree_find_offset (tree_view->priv->tree,
13208                                TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, 0),
13209                                &tree, &node);
13210       if (node)
13211         *start_path = _gtk_tree_view_find_path (tree_view, tree, node);
13212       else
13213         retval = FALSE;
13214     }
13215
13216   if (end_path)
13217     {
13218       gint y;
13219
13220       if (tree_view->priv->height < tree_view->priv->vadjustment->page_size)
13221         y = tree_view->priv->height - 1;
13222       else
13223         y = TREE_WINDOW_Y_TO_RBTREE_Y (tree_view, tree_view->priv->vadjustment->page_size) - 1;
13224
13225       _gtk_rbtree_find_offset (tree_view->priv->tree, y, &tree, &node);
13226       if (node)
13227         *end_path = _gtk_tree_view_find_path (tree_view, tree, node);
13228       else
13229         retval = FALSE;
13230     }
13231
13232   return retval;
13233 }
13234
13235 static void
13236 unset_reorderable (GtkTreeView *tree_view)
13237 {
13238   if (tree_view->priv->reorderable)
13239     {
13240       tree_view->priv->reorderable = FALSE;
13241       g_object_notify (G_OBJECT (tree_view), "reorderable");
13242     }
13243 }
13244
13245 /**
13246  * gtk_tree_view_enable_model_drag_source:
13247  * @tree_view: a #GtkTreeView
13248  * @start_button_mask: Mask of allowed buttons to start drag
13249  * @targets: the table of targets that the drag will support
13250  * @n_targets: the number of items in @targets
13251  * @actions: the bitmask of possible actions for a drag from this
13252  *    widget
13253  *
13254  * Turns @tree_view into a drag source for automatic DND. Calling this
13255  * method sets #GtkTreeView:reorderable to %FALSE.
13256  **/
13257 void
13258 gtk_tree_view_enable_model_drag_source (GtkTreeView              *tree_view,
13259                                         GdkModifierType           start_button_mask,
13260                                         const GtkTargetEntry     *targets,
13261                                         gint                      n_targets,
13262                                         GdkDragAction             actions)
13263 {
13264   TreeViewDragInfo *di;
13265
13266   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13267
13268   gtk_drag_source_set (GTK_WIDGET (tree_view),
13269                        0,
13270                        targets,
13271                        n_targets,
13272                        actions);
13273
13274   di = ensure_info (tree_view);
13275
13276   di->start_button_mask = start_button_mask;
13277   di->source_actions = actions;
13278   di->source_set = TRUE;
13279
13280   unset_reorderable (tree_view);
13281 }
13282
13283 /**
13284  * gtk_tree_view_enable_model_drag_dest:
13285  * @tree_view: a #GtkTreeView
13286  * @targets: the table of targets that the drag will support
13287  * @n_targets: the number of items in @targets
13288  * @actions: the bitmask of possible actions for a drag from this
13289  *    widget
13290  *
13291  * Turns @tree_view into a drop destination for automatic DND. Calling
13292  * this method sets #GtkTreeView:reorderable to %FALSE.
13293  **/
13294 void
13295 gtk_tree_view_enable_model_drag_dest (GtkTreeView              *tree_view,
13296                                       const GtkTargetEntry     *targets,
13297                                       gint                      n_targets,
13298                                       GdkDragAction             actions)
13299 {
13300   TreeViewDragInfo *di;
13301
13302   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13303
13304   gtk_drag_dest_set (GTK_WIDGET (tree_view),
13305                      0,
13306                      targets,
13307                      n_targets,
13308                      actions);
13309
13310   di = ensure_info (tree_view);
13311   di->dest_set = TRUE;
13312
13313   unset_reorderable (tree_view);
13314 }
13315
13316 /**
13317  * gtk_tree_view_unset_rows_drag_source:
13318  * @tree_view: a #GtkTreeView
13319  *
13320  * Undoes the effect of
13321  * gtk_tree_view_enable_model_drag_source(). Calling this method sets
13322  * #GtkTreeView:reorderable to %FALSE.
13323  **/
13324 void
13325 gtk_tree_view_unset_rows_drag_source (GtkTreeView *tree_view)
13326 {
13327   TreeViewDragInfo *di;
13328
13329   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13330
13331   di = get_info (tree_view);
13332
13333   if (di)
13334     {
13335       if (di->source_set)
13336         {
13337           gtk_drag_source_unset (GTK_WIDGET (tree_view));
13338           di->source_set = FALSE;
13339         }
13340
13341       if (!di->dest_set && !di->source_set)
13342         remove_info (tree_view);
13343     }
13344
13345   unset_reorderable (tree_view);
13346 }
13347
13348 /**
13349  * gtk_tree_view_unset_rows_drag_dest:
13350  * @tree_view: a #GtkTreeView
13351  *
13352  * Undoes the effect of
13353  * gtk_tree_view_enable_model_drag_dest(). Calling this method sets
13354  * #GtkTreeView:reorderable to %FALSE.
13355  **/
13356 void
13357 gtk_tree_view_unset_rows_drag_dest (GtkTreeView *tree_view)
13358 {
13359   TreeViewDragInfo *di;
13360
13361   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13362
13363   di = get_info (tree_view);
13364
13365   if (di)
13366     {
13367       if (di->dest_set)
13368         {
13369           gtk_drag_dest_unset (GTK_WIDGET (tree_view));
13370           di->dest_set = FALSE;
13371         }
13372
13373       if (!di->dest_set && !di->source_set)
13374         remove_info (tree_view);
13375     }
13376
13377   unset_reorderable (tree_view);
13378 }
13379
13380 /**
13381  * gtk_tree_view_set_drag_dest_row:
13382  * @tree_view: a #GtkTreeView
13383  * @path: The path of the row to highlight, or %NULL.
13384  * @pos: Specifies whether to drop before, after or into the row
13385  *
13386  * Sets the row that is highlighted for feedback.
13387  **/
13388 void
13389 gtk_tree_view_set_drag_dest_row (GtkTreeView            *tree_view,
13390                                  GtkTreePath            *path,
13391                                  GtkTreeViewDropPosition pos)
13392 {
13393   GtkTreePath *current_dest;
13394
13395   /* Note; this function is exported to allow a custom DND
13396    * implementation, so it can't touch TreeViewDragInfo
13397    */
13398
13399   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13400
13401   current_dest = NULL;
13402
13403   if (tree_view->priv->drag_dest_row)
13404     {
13405       current_dest = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13406       gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
13407     }
13408
13409   /* special case a drop on an empty model */
13410   tree_view->priv->empty_view_drop = 0;
13411
13412   if (pos == GTK_TREE_VIEW_DROP_BEFORE && path
13413       && gtk_tree_path_get_depth (path) == 1
13414       && gtk_tree_path_get_indices (path)[0] == 0)
13415     {
13416       gint n_children;
13417
13418       n_children = gtk_tree_model_iter_n_children (tree_view->priv->model,
13419                                                    NULL);
13420
13421       if (!n_children)
13422         tree_view->priv->empty_view_drop = 1;
13423     }
13424
13425   tree_view->priv->drag_dest_pos = pos;
13426
13427   if (path)
13428     {
13429       tree_view->priv->drag_dest_row =
13430         gtk_tree_row_reference_new_proxy (G_OBJECT (tree_view), tree_view->priv->model, path);
13431       gtk_tree_view_queue_draw_path (tree_view, path, NULL);
13432     }
13433   else
13434     tree_view->priv->drag_dest_row = NULL;
13435
13436   if (current_dest)
13437     {
13438       GtkRBTree *tree, *new_tree;
13439       GtkRBNode *node, *new_node;
13440
13441       _gtk_tree_view_find_node (tree_view, current_dest, &tree, &node);
13442       _gtk_tree_view_queue_draw_node (tree_view, tree, node, NULL);
13443
13444       if (tree && node)
13445         {
13446           _gtk_rbtree_next_full (tree, node, &new_tree, &new_node);
13447           if (new_tree && new_node)
13448             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13449
13450           _gtk_rbtree_prev_full (tree, node, &new_tree, &new_node);
13451           if (new_tree && new_node)
13452             _gtk_tree_view_queue_draw_node (tree_view, new_tree, new_node, NULL);
13453         }
13454       gtk_tree_path_free (current_dest);
13455     }
13456 }
13457
13458 /**
13459  * gtk_tree_view_get_drag_dest_row:
13460  * @tree_view: a #GtkTreeView
13461  * @path: Return location for the path of the highlighted row, or %NULL.
13462  * @pos: Return location for the drop position, or %NULL
13463  *
13464  * Gets information about the row that is highlighted for feedback.
13465  **/
13466 void
13467 gtk_tree_view_get_drag_dest_row (GtkTreeView              *tree_view,
13468                                  GtkTreePath             **path,
13469                                  GtkTreeViewDropPosition  *pos)
13470 {
13471   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13472
13473   if (path)
13474     {
13475       if (tree_view->priv->drag_dest_row)
13476         *path = gtk_tree_row_reference_get_path (tree_view->priv->drag_dest_row);
13477       else
13478         {
13479           if (tree_view->priv->empty_view_drop)
13480             *path = gtk_tree_path_new_from_indices (0, -1);
13481           else
13482             *path = NULL;
13483         }
13484     }
13485
13486   if (pos)
13487     *pos = tree_view->priv->drag_dest_pos;
13488 }
13489
13490 /**
13491  * gtk_tree_view_get_dest_row_at_pos:
13492  * @tree_view: a #GtkTreeView
13493  * @drag_x: the position to determine the destination row for
13494  * @drag_y: the position to determine the destination row for
13495  * @path: Return location for the path of the highlighted row, or %NULL.
13496  * @pos: Return location for the drop position, or %NULL
13497  *
13498  * Determines the destination row for a given position.  @drag_x and
13499  * @drag_y are expected to be in widget coordinates.  This function is only
13500  * meaningful if @tree_view is realized.  Therefore this function will always
13501  * return %FALSE if @tree_view is not realized or does not have a model.
13502  *
13503  * Return value: whether there is a row at the given position, %TRUE if this
13504  * is indeed the case.
13505  **/
13506 gboolean
13507 gtk_tree_view_get_dest_row_at_pos (GtkTreeView             *tree_view,
13508                                    gint                     drag_x,
13509                                    gint                     drag_y,
13510                                    GtkTreePath            **path,
13511                                    GtkTreeViewDropPosition *pos)
13512 {
13513   gint cell_y;
13514   gint bin_x, bin_y;
13515   gdouble offset_into_row;
13516   gdouble third;
13517   GdkRectangle cell;
13518   GtkTreeViewColumn *column = NULL;
13519   GtkTreePath *tmp_path = NULL;
13520
13521   /* Note; this function is exported to allow a custom DND
13522    * implementation, so it can't touch TreeViewDragInfo
13523    */
13524
13525   g_return_val_if_fail (tree_view != NULL, FALSE);
13526   g_return_val_if_fail (drag_x >= 0, FALSE);
13527   g_return_val_if_fail (drag_y >= 0, FALSE);
13528
13529   if (path)
13530     *path = NULL;
13531
13532   if (tree_view->priv->bin_window == NULL)
13533     return FALSE;
13534
13535   if (tree_view->priv->tree == NULL)
13536     return FALSE;
13537
13538   /* If in the top third of a row, we drop before that row; if
13539    * in the bottom third, drop after that row; if in the middle,
13540    * and the row has children, drop into the row.
13541    */
13542   gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, drag_x, drag_y,
13543                                                      &bin_x, &bin_y);
13544
13545   if (!gtk_tree_view_get_path_at_pos (tree_view,
13546                                       bin_x,
13547                                       bin_y,
13548                                       &tmp_path,
13549                                       &column,
13550                                       NULL,
13551                                       &cell_y))
13552     return FALSE;
13553
13554   gtk_tree_view_get_background_area (tree_view, tmp_path, column,
13555                                      &cell);
13556
13557   offset_into_row = cell_y;
13558
13559   if (path)
13560     *path = tmp_path;
13561   else
13562     gtk_tree_path_free (tmp_path);
13563
13564   tmp_path = NULL;
13565
13566   third = cell.height / 3.0;
13567
13568   if (pos)
13569     {
13570       if (offset_into_row < third)
13571         {
13572           *pos = GTK_TREE_VIEW_DROP_BEFORE;
13573         }
13574       else if (offset_into_row < (cell.height / 2.0))
13575         {
13576           *pos = GTK_TREE_VIEW_DROP_INTO_OR_BEFORE;
13577         }
13578       else if (offset_into_row < third * 2.0)
13579         {
13580           *pos = GTK_TREE_VIEW_DROP_INTO_OR_AFTER;
13581         }
13582       else
13583         {
13584           *pos = GTK_TREE_VIEW_DROP_AFTER;
13585         }
13586     }
13587
13588   return TRUE;
13589 }
13590
13591
13592
13593 /* KEEP IN SYNC WITH GTK_TREE_VIEW_BIN_EXPOSE */
13594 /**
13595  * gtk_tree_view_create_row_drag_icon:
13596  * @tree_view: a #GtkTreeView
13597  * @path: a #GtkTreePath in @tree_view
13598  *
13599  * Creates a #GdkPixmap representation of the row at @path.
13600  * This image is used for a drag icon.
13601  *
13602  * Return value: a newly-allocated pixmap of the drag icon.
13603  **/
13604 GdkPixmap *
13605 gtk_tree_view_create_row_drag_icon (GtkTreeView  *tree_view,
13606                                     GtkTreePath  *path)
13607 {
13608   GtkTreeIter   iter;
13609   GtkRBTree    *tree;
13610   GtkRBNode    *node;
13611   gint cell_offset;
13612   GList *list;
13613   GdkRectangle background_area;
13614   GdkRectangle expose_area;
13615   GtkWidget *widget;
13616   gint depth;
13617   /* start drawing inside the black outline */
13618   gint x = 1, y = 1;
13619   GdkDrawable *drawable;
13620   gint bin_window_width;
13621   gboolean is_separator = FALSE;
13622   gboolean rtl;
13623
13624   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13625   g_return_val_if_fail (path != NULL, NULL);
13626
13627   widget = GTK_WIDGET (tree_view);
13628
13629   if (!GTK_WIDGET_REALIZED (tree_view))
13630     return NULL;
13631
13632   depth = gtk_tree_path_get_depth (path);
13633
13634   _gtk_tree_view_find_node (tree_view,
13635                             path,
13636                             &tree,
13637                             &node);
13638
13639   if (tree == NULL)
13640     return NULL;
13641
13642   if (!gtk_tree_model_get_iter (tree_view->priv->model,
13643                                 &iter,
13644                                 path))
13645     return NULL;
13646
13647   is_separator = row_is_separator (tree_view, &iter, NULL);
13648
13649   cell_offset = x;
13650
13651   background_area.y = y;
13652   background_area.height = ROW_HEIGHT (tree_view, BACKGROUND_HEIGHT (node));
13653
13654   gdk_drawable_get_size (tree_view->priv->bin_window,
13655                          &bin_window_width, NULL);
13656
13657   drawable = gdk_pixmap_new (tree_view->priv->bin_window,
13658                              bin_window_width + 2,
13659                              background_area.height + 2,
13660                              -1);
13661
13662   expose_area.x = 0;
13663   expose_area.y = 0;
13664   expose_area.width = bin_window_width + 2;
13665   expose_area.height = background_area.height + 2;
13666
13667   gdk_draw_rectangle (drawable,
13668                       widget->style->base_gc [GTK_WIDGET_STATE (widget)],
13669                       TRUE,
13670                       0, 0,
13671                       bin_window_width + 2,
13672                       background_area.height + 2);
13673
13674   rtl = gtk_widget_get_direction (GTK_WIDGET (tree_view)) == GTK_TEXT_DIR_RTL;
13675
13676   for (list = (rtl ? g_list_last (tree_view->priv->columns) : g_list_first (tree_view->priv->columns));
13677       list;
13678       list = (rtl ? list->prev : list->next))
13679     {
13680       GtkTreeViewColumn *column = list->data;
13681       GdkRectangle cell_area;
13682       gint vertical_separator;
13683
13684       if (!column->visible)
13685         continue;
13686
13687       gtk_tree_view_column_cell_set_cell_data (column, tree_view->priv->model, &iter,
13688                                                GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_PARENT),
13689                                                node->children?TRUE:FALSE);
13690
13691       background_area.x = cell_offset;
13692       background_area.width = column->width;
13693
13694       gtk_widget_style_get (widget,
13695                             "vertical-separator", &vertical_separator,
13696                             NULL);
13697
13698       cell_area = background_area;
13699
13700       cell_area.y += vertical_separator / 2;
13701       cell_area.height -= vertical_separator;
13702
13703       if (gtk_tree_view_is_expander_column (tree_view, column))
13704         {
13705           if (!rtl)
13706             cell_area.x += (depth - 1) * tree_view->priv->level_indentation;
13707           cell_area.width -= (depth - 1) * tree_view->priv->level_indentation;
13708
13709           if (TREE_VIEW_DRAW_EXPANDERS(tree_view))
13710             {
13711               if (!rtl)
13712                 cell_area.x += depth * tree_view->priv->expander_size;
13713               cell_area.width -= depth * tree_view->priv->expander_size;
13714             }
13715         }
13716
13717       if (gtk_tree_view_column_cell_is_visible (column))
13718         {
13719           if (is_separator)
13720             gtk_paint_hline (widget->style,
13721                              drawable,
13722                              GTK_STATE_NORMAL,
13723                              &cell_area,
13724                              widget,
13725                              NULL,
13726                              cell_area.x,
13727                              cell_area.x + cell_area.width,
13728                              cell_area.y + cell_area.height / 2);
13729           else
13730             _gtk_tree_view_column_cell_render (column,
13731                                                drawable,
13732                                                &background_area,
13733                                                &cell_area,
13734                                                &expose_area,
13735                                                0);
13736         }
13737       cell_offset += column->width;
13738     }
13739
13740   gdk_draw_rectangle (drawable,
13741                       widget->style->black_gc,
13742                       FALSE,
13743                       0, 0,
13744                       bin_window_width + 1,
13745                       background_area.height + 1);
13746
13747   return drawable;
13748 }
13749
13750
13751 /**
13752  * gtk_tree_view_set_destroy_count_func:
13753  * @tree_view: A #GtkTreeView
13754  * @func: Function to be called when a view row is destroyed, or %NULL
13755  * @data: User data to be passed to @func, or %NULL
13756  * @destroy: Destroy notifier for @data, or %NULL
13757  *
13758  * This function should almost never be used.  It is meant for private use by
13759  * ATK for determining the number of visible children that are removed when the
13760  * user collapses a row, or a row is deleted.
13761  **/
13762 void
13763 gtk_tree_view_set_destroy_count_func (GtkTreeView             *tree_view,
13764                                       GtkTreeDestroyCountFunc  func,
13765                                       gpointer                 data,
13766                                       GDestroyNotify           destroy)
13767 {
13768   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13769
13770   if (tree_view->priv->destroy_count_destroy)
13771     tree_view->priv->destroy_count_destroy (tree_view->priv->destroy_count_data);
13772
13773   tree_view->priv->destroy_count_func = func;
13774   tree_view->priv->destroy_count_data = data;
13775   tree_view->priv->destroy_count_destroy = destroy;
13776 }
13777
13778
13779 /*
13780  * Interactive search
13781  */
13782
13783 /**
13784  * gtk_tree_view_set_enable_search:
13785  * @tree_view: A #GtkTreeView
13786  * @enable_search: %TRUE, if the user can search interactively
13787  *
13788  * If @enable_search is set, then the user can type in text to search through
13789  * the tree interactively (this is sometimes called "typeahead find").
13790  *
13791  * Note that even if this is %FALSE, the user can still initiate a search
13792  * using the "start-interactive-search" key binding.
13793  */
13794 void
13795 gtk_tree_view_set_enable_search (GtkTreeView *tree_view,
13796                                  gboolean     enable_search)
13797 {
13798   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13799
13800   enable_search = !!enable_search;
13801
13802   if (tree_view->priv->enable_search != enable_search)
13803     {
13804        tree_view->priv->enable_search = enable_search;
13805        g_object_notify (G_OBJECT (tree_view), "enable-search");
13806     }
13807 }
13808
13809 /**
13810  * gtk_tree_view_get_enable_search:
13811  * @tree_view: A #GtkTreeView
13812  *
13813  * Returns whether or not the tree allows to start interactive searching
13814  * by typing in text.
13815  *
13816  * Return value: whether or not to let the user search interactively
13817  */
13818 gboolean
13819 gtk_tree_view_get_enable_search (GtkTreeView *tree_view)
13820 {
13821   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
13822
13823   return tree_view->priv->enable_search;
13824 }
13825
13826
13827 /**
13828  * gtk_tree_view_get_search_column:
13829  * @tree_view: A #GtkTreeView
13830  *
13831  * Gets the column searched on by the interactive search code.
13832  *
13833  * Return value: the column the interactive search code searches in.
13834  */
13835 gint
13836 gtk_tree_view_get_search_column (GtkTreeView *tree_view)
13837 {
13838   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), -1);
13839
13840   return (tree_view->priv->search_column);
13841 }
13842
13843 /**
13844  * gtk_tree_view_set_search_column:
13845  * @tree_view: A #GtkTreeView
13846  * @column: the column of the model to search in, or -1 to disable searching
13847  *
13848  * Sets @column as the column where the interactive search code should
13849  * search in for the current model.
13850  *
13851  * If the search column is set, users can use the "start-interactive-search"
13852  * key binding to bring up search popup. The enable-search property controls
13853  * whether simply typing text will also start an interactive search.
13854  *
13855  * Note that @column refers to a column of the current model. The search
13856  * column is reset to -1 when the model is changed.
13857  */
13858 void
13859 gtk_tree_view_set_search_column (GtkTreeView *tree_view,
13860                                  gint         column)
13861 {
13862   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13863   g_return_if_fail (column >= -1);
13864
13865   if (tree_view->priv->search_column == column)
13866     return;
13867
13868   tree_view->priv->search_column = column;
13869   g_object_notify (G_OBJECT (tree_view), "search-column");
13870 }
13871
13872 /**
13873  * gtk_tree_view_get_search_equal_func:
13874  * @tree_view: A #GtkTreeView
13875  *
13876  * Returns the compare function currently in use.
13877  *
13878  * Return value: the currently used compare function for the search code.
13879  */
13880
13881 GtkTreeViewSearchEqualFunc
13882 gtk_tree_view_get_search_equal_func (GtkTreeView *tree_view)
13883 {
13884   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13885
13886   return tree_view->priv->search_equal_func;
13887 }
13888
13889 /**
13890  * gtk_tree_view_set_search_equal_func:
13891  * @tree_view: A #GtkTreeView
13892  * @search_equal_func: the compare function to use during the search
13893  * @search_user_data: user data to pass to @search_equal_func, or %NULL
13894  * @search_destroy: Destroy notifier for @search_user_data, or %NULL
13895  *
13896  * Sets the compare function for the interactive search capabilities; note
13897  * that somewhat like strcmp() returning 0 for equality
13898  * #GtkTreeViewSearchEqualFunc returns %FALSE on matches.
13899  **/
13900 void
13901 gtk_tree_view_set_search_equal_func (GtkTreeView                *tree_view,
13902                                      GtkTreeViewSearchEqualFunc  search_equal_func,
13903                                      gpointer                    search_user_data,
13904                                      GDestroyNotify              search_destroy)
13905 {
13906   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13907   g_return_if_fail (search_equal_func != NULL);
13908
13909   if (tree_view->priv->search_destroy)
13910     tree_view->priv->search_destroy (tree_view->priv->search_user_data);
13911
13912   tree_view->priv->search_equal_func = search_equal_func;
13913   tree_view->priv->search_user_data = search_user_data;
13914   tree_view->priv->search_destroy = search_destroy;
13915   if (tree_view->priv->search_equal_func == NULL)
13916     tree_view->priv->search_equal_func = gtk_tree_view_search_equal_func;
13917 }
13918
13919 /**
13920  * gtk_tree_view_get_search_entry:
13921  * @tree_view: A #GtkTreeView
13922  *
13923  * Returns the #GtkEntry which is currently in use as interactive search
13924  * entry for @tree_view.  In case the built-in entry is being used, %NULL
13925  * will be returned.
13926  *
13927  * Return value: the entry currently in use as search entry.
13928  *
13929  * Since: 2.10
13930  */
13931 GtkEntry *
13932 gtk_tree_view_get_search_entry (GtkTreeView *tree_view)
13933 {
13934   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
13935
13936   if (tree_view->priv->search_custom_entry_set)
13937     return GTK_ENTRY (tree_view->priv->search_entry);
13938
13939   return NULL;
13940 }
13941
13942 /**
13943  * gtk_tree_view_set_search_entry:
13944  * @tree_view: A #GtkTreeView
13945  * @entry: the entry the interactive search code of @tree_view should use or %NULL
13946  *
13947  * Sets the entry which the interactive search code will use for this
13948  * @tree_view.  This is useful when you want to provide a search entry
13949  * in our interface at all time at a fixed position.  Passing %NULL for
13950  * @entry will make the interactive search code use the built-in popup
13951  * entry again.
13952  *
13953  * Since: 2.10
13954  */
13955 void
13956 gtk_tree_view_set_search_entry (GtkTreeView *tree_view,
13957                                 GtkEntry    *entry)
13958 {
13959   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
13960   g_return_if_fail (entry == NULL || GTK_IS_ENTRY (entry));
13961
13962   if (tree_view->priv->search_custom_entry_set)
13963     {
13964       if (tree_view->priv->search_entry_changed_id)
13965         {
13966           g_signal_handler_disconnect (tree_view->priv->search_entry,
13967                                        tree_view->priv->search_entry_changed_id);
13968           tree_view->priv->search_entry_changed_id = 0;
13969         }
13970       g_signal_handlers_disconnect_by_func (tree_view->priv->search_entry,
13971                                             G_CALLBACK (gtk_tree_view_search_key_press_event),
13972                                             tree_view);
13973
13974       g_object_unref (tree_view->priv->search_entry);
13975     }
13976   else if (tree_view->priv->search_window)
13977     {
13978       gtk_widget_destroy (tree_view->priv->search_window);
13979
13980       tree_view->priv->search_window = NULL;
13981     }
13982
13983   if (entry)
13984     {
13985       tree_view->priv->search_entry = g_object_ref (entry);
13986       tree_view->priv->search_custom_entry_set = TRUE;
13987
13988       if (tree_view->priv->search_entry_changed_id == 0)
13989         {
13990           tree_view->priv->search_entry_changed_id =
13991             g_signal_connect (tree_view->priv->search_entry, "changed",
13992                               G_CALLBACK (gtk_tree_view_search_init),
13993                               tree_view);
13994         }
13995
13996         g_signal_connect (tree_view->priv->search_entry, "key-press-event",
13997                           G_CALLBACK (gtk_tree_view_search_key_press_event),
13998                           tree_view);
13999
14000         gtk_tree_view_search_init (tree_view->priv->search_entry, tree_view);
14001     }
14002   else
14003     {
14004       tree_view->priv->search_entry = NULL;
14005       tree_view->priv->search_custom_entry_set = FALSE;
14006     }
14007 }
14008
14009 /**
14010  * gtk_tree_view_set_search_position_func:
14011  * @tree_view: A #GtkTreeView
14012  * @func: the function to use to position the search dialog, or %NULL
14013  *    to use the default search position function
14014  * @data: user data to pass to @func, or %NULL
14015  * @destroy: Destroy notifier for @data, or %NULL
14016  *
14017  * Sets the function to use when positioning the search dialog.
14018  *
14019  * Since: 2.10
14020  **/
14021 void
14022 gtk_tree_view_set_search_position_func (GtkTreeView                   *tree_view,
14023                                         GtkTreeViewSearchPositionFunc  func,
14024                                         gpointer                       user_data,
14025                                         GDestroyNotify                 destroy)
14026 {
14027   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14028
14029   if (tree_view->priv->search_position_destroy)
14030     tree_view->priv->search_position_destroy (tree_view->priv->search_position_user_data);
14031
14032   tree_view->priv->search_position_func = func;
14033   tree_view->priv->search_position_user_data = user_data;
14034   tree_view->priv->search_position_destroy = destroy;
14035   if (tree_view->priv->search_position_func == NULL)
14036     tree_view->priv->search_position_func = gtk_tree_view_search_position_func;
14037 }
14038
14039 /**
14040  * gtk_tree_view_get_search_position_func:
14041  * @tree_view: A #GtkTreeView
14042  *
14043  * Returns the positioning function currently in use.
14044  *
14045  * Return value: the currently used function for positioning the search dialog.
14046  *
14047  * Since: 2.10
14048  */
14049 GtkTreeViewSearchPositionFunc
14050 gtk_tree_view_get_search_position_func (GtkTreeView *tree_view)
14051 {
14052   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14053
14054   return tree_view->priv->search_position_func;
14055 }
14056
14057
14058 static void
14059 gtk_tree_view_search_dialog_hide (GtkWidget   *search_dialog,
14060                                   GtkTreeView *tree_view)
14061 {
14062   if (tree_view->priv->disable_popdown)
14063     return;
14064
14065   if (tree_view->priv->search_entry_changed_id)
14066     {
14067       g_signal_handler_disconnect (tree_view->priv->search_entry,
14068                                    tree_view->priv->search_entry_changed_id);
14069       tree_view->priv->search_entry_changed_id = 0;
14070     }
14071   if (tree_view->priv->typeselect_flush_timeout)
14072     {
14073       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14074       tree_view->priv->typeselect_flush_timeout = 0;
14075     }
14076
14077   if (GTK_WIDGET_VISIBLE (search_dialog))
14078     {
14079       /* send focus-in event */
14080       send_focus_change (GTK_WIDGET (tree_view->priv->search_entry), FALSE);
14081       gtk_widget_hide (search_dialog);
14082       gtk_entry_set_text (GTK_ENTRY (tree_view->priv->search_entry), "");
14083       send_focus_change (GTK_WIDGET (tree_view), TRUE);
14084     }
14085 }
14086
14087 static void
14088 gtk_tree_view_search_position_func (GtkTreeView *tree_view,
14089                                     GtkWidget   *search_dialog,
14090                                     gpointer     user_data)
14091 {
14092   gint x, y;
14093   gint tree_x, tree_y;
14094   gint tree_width, tree_height;
14095   GdkWindow *tree_window = GTK_WIDGET (tree_view)->window;
14096   GdkScreen *screen = gdk_drawable_get_screen (tree_window);
14097   GtkRequisition requisition;
14098   gint monitor_num;
14099   GdkRectangle monitor;
14100
14101   monitor_num = gdk_screen_get_monitor_at_window (screen, tree_window);
14102   gdk_screen_get_monitor_geometry (screen, monitor_num, &monitor);
14103
14104   gtk_widget_realize (search_dialog);
14105
14106   gdk_window_get_origin (tree_window, &tree_x, &tree_y);
14107   gdk_drawable_get_size (tree_window,
14108                          &tree_width,
14109                          &tree_height);
14110   gtk_widget_size_request (search_dialog, &requisition);
14111
14112   if (tree_x + tree_width > gdk_screen_get_width (screen))
14113     x = gdk_screen_get_width (screen) - requisition.width;
14114   else if (tree_x + tree_width - requisition.width < 0)
14115     x = 0;
14116   else
14117     x = tree_x + tree_width - requisition.width;
14118
14119   if (tree_y + tree_height + requisition.height > gdk_screen_get_height (screen))
14120     y = gdk_screen_get_height (screen) - requisition.height;
14121   else if (tree_y + tree_height < 0) /* isn't really possible ... */
14122     y = 0;
14123   else
14124     y = tree_y + tree_height;
14125
14126   gtk_window_move (GTK_WINDOW (search_dialog), x, y);
14127 }
14128
14129 static void
14130 gtk_tree_view_search_disable_popdown (GtkEntry *entry,
14131                                       GtkMenu  *menu,
14132                                       gpointer  data)
14133 {
14134   GtkTreeView *tree_view = (GtkTreeView *)data;
14135
14136   tree_view->priv->disable_popdown = 1;
14137   g_signal_connect (menu, "hide",
14138                     G_CALLBACK (gtk_tree_view_search_enable_popdown), data);
14139 }
14140
14141 /* Because we're visible but offscreen, we just set a flag in the preedit
14142  * callback.
14143  */
14144 static void
14145 gtk_tree_view_search_preedit_changed (GtkIMContext *im_context,
14146                                       GtkTreeView  *tree_view)
14147 {
14148   tree_view->priv->imcontext_changed = 1;
14149   if (tree_view->priv->typeselect_flush_timeout)
14150     {
14151       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14152       tree_view->priv->typeselect_flush_timeout =
14153         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14154                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14155                        tree_view);
14156     }
14157
14158 }
14159
14160 static void
14161 gtk_tree_view_search_activate (GtkEntry    *entry,
14162                                GtkTreeView *tree_view)
14163 {
14164   GtkTreePath *path;
14165   GtkRBNode *node;
14166   GtkRBTree *tree;
14167
14168   gtk_tree_view_search_dialog_hide (tree_view->priv->search_window,
14169                                     tree_view);
14170
14171   /* If we have a row selected and it's the cursor row, we activate
14172    * the row XXX */
14173   if (gtk_tree_row_reference_valid (tree_view->priv->cursor))
14174     {
14175       path = gtk_tree_row_reference_get_path (tree_view->priv->cursor);
14176
14177       _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14178
14179       if (node && GTK_RBNODE_FLAG_SET (node, GTK_RBNODE_IS_SELECTED))
14180         gtk_tree_view_row_activated (tree_view, path, tree_view->priv->focus_column);
14181
14182       gtk_tree_path_free (path);
14183     }
14184 }
14185
14186 static gboolean
14187 gtk_tree_view_real_search_enable_popdown (gpointer data)
14188 {
14189   GtkTreeView *tree_view = (GtkTreeView *)data;
14190
14191   tree_view->priv->disable_popdown = 0;
14192
14193   return FALSE;
14194 }
14195
14196 static void
14197 gtk_tree_view_search_enable_popdown (GtkWidget *widget,
14198                                      gpointer   data)
14199 {
14200   gdk_threads_add_timeout_full (G_PRIORITY_HIGH, 200, gtk_tree_view_real_search_enable_popdown, g_object_ref (data), g_object_unref);
14201 }
14202
14203 static gboolean
14204 gtk_tree_view_search_delete_event (GtkWidget *widget,
14205                                    GdkEventAny *event,
14206                                    GtkTreeView *tree_view)
14207 {
14208   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14209
14210   gtk_tree_view_search_dialog_hide (widget, tree_view);
14211
14212   return TRUE;
14213 }
14214
14215 static gboolean
14216 gtk_tree_view_search_button_press_event (GtkWidget *widget,
14217                                          GdkEventButton *event,
14218                                          GtkTreeView *tree_view)
14219 {
14220   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14221
14222   gtk_tree_view_search_dialog_hide (widget, tree_view);
14223
14224   if (event->window == tree_view->priv->bin_window)
14225     gtk_tree_view_button_press (GTK_WIDGET (tree_view), event);
14226
14227   return TRUE;
14228 }
14229
14230 static gboolean
14231 gtk_tree_view_search_scroll_event (GtkWidget *widget,
14232                                    GdkEventScroll *event,
14233                                    GtkTreeView *tree_view)
14234 {
14235   gboolean retval = FALSE;
14236
14237   if (event->direction == GDK_SCROLL_UP)
14238     {
14239       gtk_tree_view_search_move (widget, tree_view, TRUE);
14240       retval = TRUE;
14241     }
14242   else if (event->direction == GDK_SCROLL_DOWN)
14243     {
14244       gtk_tree_view_search_move (widget, tree_view, FALSE);
14245       retval = TRUE;
14246     }
14247
14248   /* renew the flush timeout */
14249   if (retval && tree_view->priv->typeselect_flush_timeout
14250       && !tree_view->priv->search_custom_entry_set)
14251     {
14252       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14253       tree_view->priv->typeselect_flush_timeout =
14254         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14255                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14256                        tree_view);
14257     }
14258
14259   return retval;
14260 }
14261
14262 static gboolean
14263 gtk_tree_view_search_key_press_event (GtkWidget *widget,
14264                                       GdkEventKey *event,
14265                                       GtkTreeView *tree_view)
14266 {
14267   gboolean retval = FALSE;
14268
14269   g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
14270   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14271
14272   /* close window and cancel the search */
14273   if (!tree_view->priv->search_custom_entry_set
14274       && (event->keyval == GDK_Escape ||
14275           event->keyval == GDK_Tab ||
14276             event->keyval == GDK_KP_Tab ||
14277             event->keyval == GDK_ISO_Left_Tab))
14278     {
14279       gtk_tree_view_search_dialog_hide (widget, tree_view);
14280       return TRUE;
14281     }
14282
14283   /* select previous matching iter */
14284   if (event->keyval == GDK_Up || event->keyval == GDK_KP_Up)
14285     {
14286       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14287         gtk_widget_error_bell (widget);
14288
14289       retval = TRUE;
14290     }
14291
14292   if (((event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) == (GDK_CONTROL_MASK | GDK_SHIFT_MASK))
14293       && (event->keyval == GDK_g || event->keyval == GDK_G))
14294     {
14295       if (!gtk_tree_view_search_move (widget, tree_view, TRUE))
14296         gtk_widget_error_bell (widget);
14297
14298       retval = TRUE;
14299     }
14300
14301   /* select next matching iter */
14302   if (event->keyval == GDK_Down || event->keyval == GDK_KP_Down)
14303     {
14304       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14305         gtk_widget_error_bell (widget);
14306
14307       retval = TRUE;
14308     }
14309
14310   if (((event->state & (GDK_CONTROL_MASK | GDK_SHIFT_MASK)) == GDK_CONTROL_MASK)
14311       && (event->keyval == GDK_g || event->keyval == GDK_G))
14312     {
14313       if (!gtk_tree_view_search_move (widget, tree_view, FALSE))
14314         gtk_widget_error_bell (widget);
14315
14316       retval = TRUE;
14317     }
14318
14319   /* renew the flush timeout */
14320   if (retval && tree_view->priv->typeselect_flush_timeout
14321       && !tree_view->priv->search_custom_entry_set)
14322     {
14323       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14324       tree_view->priv->typeselect_flush_timeout =
14325         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14326                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14327                        tree_view);
14328     }
14329
14330   return retval;
14331 }
14332
14333 /*  this function returns FALSE if there is a search string but
14334  *  nothing was found, and TRUE otherwise.
14335  */
14336 static gboolean
14337 gtk_tree_view_search_move (GtkWidget   *window,
14338                            GtkTreeView *tree_view,
14339                            gboolean     up)
14340 {
14341   gboolean ret;
14342   gint len;
14343   gint count = 0;
14344   const gchar *text;
14345   GtkTreeIter iter;
14346   GtkTreeModel *model;
14347   GtkTreeSelection *selection;
14348
14349   text = gtk_entry_get_text (GTK_ENTRY (tree_view->priv->search_entry));
14350
14351   g_return_val_if_fail (text != NULL, FALSE);
14352
14353   len = strlen (text);
14354
14355   if (up && tree_view->priv->selected_iter == 1)
14356     return strlen (text) < 1;
14357
14358   len = strlen (text);
14359
14360   if (len < 1)
14361     return TRUE;
14362
14363   model = gtk_tree_view_get_model (tree_view);
14364   selection = gtk_tree_view_get_selection (tree_view);
14365
14366   /* search */
14367   gtk_tree_selection_unselect_all (selection);
14368   if (!gtk_tree_model_get_iter_first (model, &iter))
14369     return TRUE;
14370
14371   ret = gtk_tree_view_search_iter (model, selection, &iter, text,
14372                                    &count, up?((tree_view->priv->selected_iter) - 1):((tree_view->priv->selected_iter + 1)));
14373
14374   if (ret)
14375     {
14376       /* found */
14377       tree_view->priv->selected_iter += up?(-1):(1);
14378       return TRUE;
14379     }
14380   else
14381     {
14382       /* return to old iter */
14383       count = 0;
14384       gtk_tree_model_get_iter_first (model, &iter);
14385       gtk_tree_view_search_iter (model, selection,
14386                                  &iter, text,
14387                                  &count, tree_view->priv->selected_iter);
14388       return FALSE;
14389     }
14390 }
14391
14392 static gboolean
14393 gtk_tree_view_search_equal_func (GtkTreeModel *model,
14394                                  gint          column,
14395                                  const gchar  *key,
14396                                  GtkTreeIter  *iter,
14397                                  gpointer      search_data)
14398 {
14399   gboolean retval = TRUE;
14400   const gchar *str;
14401   gchar *normalized_string;
14402   gchar *normalized_key;
14403   gchar *case_normalized_string = NULL;
14404   gchar *case_normalized_key = NULL;
14405   GValue value = {0,};
14406   GValue transformed = {0,};
14407
14408   gtk_tree_model_get_value (model, iter, column, &value);
14409
14410   g_value_init (&transformed, G_TYPE_STRING);
14411
14412   if (!g_value_transform (&value, &transformed))
14413     {
14414       g_value_unset (&value);
14415       return TRUE;
14416     }
14417
14418   g_value_unset (&value);
14419
14420   str = g_value_get_string (&transformed);
14421   if (!str)
14422     {
14423       g_value_unset (&transformed);
14424       return TRUE;
14425     }
14426
14427   normalized_string = g_utf8_normalize (str, -1, G_NORMALIZE_ALL);
14428   normalized_key = g_utf8_normalize (key, -1, G_NORMALIZE_ALL);
14429
14430   if (normalized_string && normalized_key)
14431     {
14432       case_normalized_string = g_utf8_casefold (normalized_string, -1);
14433       case_normalized_key = g_utf8_casefold (normalized_key, -1);
14434
14435       if (strncmp (case_normalized_key, case_normalized_string, strlen (case_normalized_key)) == 0)
14436         retval = FALSE;
14437     }
14438
14439   g_value_unset (&transformed);
14440   g_free (normalized_key);
14441   g_free (normalized_string);
14442   g_free (case_normalized_key);
14443   g_free (case_normalized_string);
14444
14445   return retval;
14446 }
14447
14448 static gboolean
14449 gtk_tree_view_search_iter (GtkTreeModel     *model,
14450                            GtkTreeSelection *selection,
14451                            GtkTreeIter      *iter,
14452                            const gchar      *text,
14453                            gint             *count,
14454                            gint              n)
14455 {
14456   GtkRBTree *tree = NULL;
14457   GtkRBNode *node = NULL;
14458   GtkTreePath *path;
14459
14460   GtkTreeView *tree_view = gtk_tree_selection_get_tree_view (selection);
14461
14462   path = gtk_tree_model_get_path (model, iter);
14463   _gtk_tree_view_find_node (tree_view, path, &tree, &node);
14464
14465   do
14466     {
14467       if (! tree_view->priv->search_equal_func (model, tree_view->priv->search_column, text, iter, tree_view->priv->search_user_data))
14468         {
14469           (*count)++;
14470           if (*count == n)
14471             {
14472               gtk_tree_view_scroll_to_cell (tree_view, path, NULL,
14473                                             TRUE, 0.5, 0.0);
14474               gtk_tree_selection_select_iter (selection, iter);
14475               gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14476
14477               if (path)
14478                 gtk_tree_path_free (path);
14479
14480               return TRUE;
14481             }
14482         }
14483
14484       if (node->children)
14485         {
14486           gboolean has_child;
14487           GtkTreeIter tmp;
14488
14489           tree = node->children;
14490           node = tree->root;
14491
14492           while (node->left != tree->nil)
14493             node = node->left;
14494
14495           tmp = *iter;
14496           has_child = gtk_tree_model_iter_children (model, iter, &tmp);
14497           gtk_tree_path_down (path);
14498
14499           /* sanity check */
14500           TREE_VIEW_INTERNAL_ASSERT (has_child, FALSE);
14501         }
14502       else
14503         {
14504           gboolean done = FALSE;
14505
14506           do
14507             {
14508               node = _gtk_rbtree_next (tree, node);
14509
14510               if (node)
14511                 {
14512                   gboolean has_next;
14513
14514                   has_next = gtk_tree_model_iter_next (model, iter);
14515
14516                   done = TRUE;
14517                   gtk_tree_path_next (path);
14518
14519                   /* sanity check */
14520                   TREE_VIEW_INTERNAL_ASSERT (has_next, FALSE);
14521                 }
14522               else
14523                 {
14524                   gboolean has_parent;
14525                   GtkTreeIter tmp_iter = *iter;
14526
14527                   node = tree->parent_node;
14528                   tree = tree->parent_tree;
14529
14530                   if (!tree)
14531                     {
14532                       if (path)
14533                         gtk_tree_path_free (path);
14534
14535                       /* we've run out of tree, done with this func */
14536                       return FALSE;
14537                     }
14538
14539                   has_parent = gtk_tree_model_iter_parent (model,
14540                                                            iter,
14541                                                            &tmp_iter);
14542                   gtk_tree_path_up (path);
14543
14544                   /* sanity check */
14545                   TREE_VIEW_INTERNAL_ASSERT (has_parent, FALSE);
14546                 }
14547             }
14548           while (!done);
14549         }
14550     }
14551   while (1);
14552
14553   return FALSE;
14554 }
14555
14556 static void
14557 gtk_tree_view_search_init (GtkWidget   *entry,
14558                            GtkTreeView *tree_view)
14559 {
14560   gint ret;
14561   gint count = 0;
14562   const gchar *text;
14563   GtkTreeIter iter;
14564   GtkTreeModel *model;
14565   GtkTreeSelection *selection;
14566
14567   g_return_if_fail (GTK_IS_ENTRY (entry));
14568   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14569
14570   text = gtk_entry_get_text (GTK_ENTRY (entry));
14571
14572   model = gtk_tree_view_get_model (tree_view);
14573   selection = gtk_tree_view_get_selection (tree_view);
14574
14575   /* search */
14576   gtk_tree_selection_unselect_all (selection);
14577   if (tree_view->priv->typeselect_flush_timeout
14578       && !tree_view->priv->search_custom_entry_set)
14579     {
14580       g_source_remove (tree_view->priv->typeselect_flush_timeout);
14581       tree_view->priv->typeselect_flush_timeout =
14582         gdk_threads_add_timeout (GTK_TREE_VIEW_SEARCH_DIALOG_TIMEOUT,
14583                        (GSourceFunc) gtk_tree_view_search_entry_flush_timeout,
14584                        tree_view);
14585     }
14586
14587   if (*text == '\0')
14588     return;
14589
14590   if (!gtk_tree_model_get_iter_first (model, &iter))
14591     return;
14592
14593   ret = gtk_tree_view_search_iter (model, selection,
14594                                    &iter, text,
14595                                    &count, 1);
14596
14597   if (ret)
14598     tree_view->priv->selected_iter = 1;
14599 }
14600
14601 static void
14602 gtk_tree_view_remove_widget (GtkCellEditable *cell_editable,
14603                              GtkTreeView     *tree_view)
14604 {
14605   if (tree_view->priv->edited_column == NULL)
14606     return;
14607
14608   _gtk_tree_view_column_stop_editing (tree_view->priv->edited_column);
14609   tree_view->priv->edited_column = NULL;
14610
14611   if (GTK_WIDGET_HAS_FOCUS (cell_editable))
14612     gtk_widget_grab_focus (GTK_WIDGET (tree_view));
14613
14614   g_signal_handlers_disconnect_by_func (cell_editable,
14615                                         gtk_tree_view_remove_widget,
14616                                         tree_view);
14617
14618   gtk_container_remove (GTK_CONTAINER (tree_view),
14619                         GTK_WIDGET (cell_editable));
14620
14621   /* FIXME should only redraw a single node */
14622   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
14623 }
14624
14625 static gboolean
14626 gtk_tree_view_start_editing (GtkTreeView *tree_view,
14627                              GtkTreePath *cursor_path)
14628 {
14629   GtkTreeIter iter;
14630   GdkRectangle background_area;
14631   GdkRectangle cell_area;
14632   GtkCellEditable *editable_widget = NULL;
14633   gchar *path_string;
14634   guint flags = 0; /* can be 0, as the flags are primarily for rendering */
14635   gint retval = FALSE;
14636   GtkRBTree *cursor_tree;
14637   GtkRBNode *cursor_node;
14638
14639   g_assert (tree_view->priv->focus_column);
14640
14641   if (! GTK_WIDGET_REALIZED (tree_view))
14642     return FALSE;
14643
14644   if (_gtk_tree_view_find_node (tree_view, cursor_path, &cursor_tree, &cursor_node) ||
14645       cursor_node == NULL)
14646     return FALSE;
14647
14648   path_string = gtk_tree_path_to_string (cursor_path);
14649   gtk_tree_model_get_iter (tree_view->priv->model, &iter, cursor_path);
14650
14651   validate_row (tree_view, cursor_tree, cursor_node, &iter, cursor_path);
14652
14653   gtk_tree_view_column_cell_set_cell_data (tree_view->priv->focus_column,
14654                                            tree_view->priv->model,
14655                                            &iter,
14656                                            GTK_RBNODE_FLAG_SET (cursor_node, GTK_RBNODE_IS_PARENT),
14657                                            cursor_node->children?TRUE:FALSE);
14658   gtk_tree_view_get_background_area (tree_view,
14659                                      cursor_path,
14660                                      tree_view->priv->focus_column,
14661                                      &background_area);
14662   gtk_tree_view_get_cell_area (tree_view,
14663                                cursor_path,
14664                                tree_view->priv->focus_column,
14665                                &cell_area);
14666
14667   if (_gtk_tree_view_column_cell_event (tree_view->priv->focus_column,
14668                                         &editable_widget,
14669                                         NULL,
14670                                         path_string,
14671                                         &background_area,
14672                                         &cell_area,
14673                                         flags))
14674     {
14675       retval = TRUE;
14676       if (editable_widget != NULL)
14677         {
14678           gint left, right;
14679           GdkRectangle area;
14680           GtkCellRenderer *cell;
14681
14682           area = cell_area;
14683           cell = _gtk_tree_view_column_get_edited_cell (tree_view->priv->focus_column);
14684
14685           _gtk_tree_view_column_get_neighbor_sizes (tree_view->priv->focus_column, cell, &left, &right);
14686
14687           area.x += left;
14688           area.width -= right + left;
14689
14690           gtk_tree_view_real_start_editing (tree_view,
14691                                             tree_view->priv->focus_column,
14692                                             cursor_path,
14693                                             editable_widget,
14694                                             &area,
14695                                             NULL,
14696                                             flags);
14697         }
14698
14699     }
14700   g_free (path_string);
14701   return retval;
14702 }
14703
14704 static void
14705 gtk_tree_view_real_start_editing (GtkTreeView       *tree_view,
14706                                   GtkTreeViewColumn *column,
14707                                   GtkTreePath       *path,
14708                                   GtkCellEditable   *cell_editable,
14709                                   GdkRectangle      *cell_area,
14710                                   GdkEvent          *event,
14711                                   guint              flags)
14712 {
14713   gint pre_val = tree_view->priv->vadjustment->value;
14714   GtkRequisition requisition;
14715
14716   tree_view->priv->edited_column = column;
14717   _gtk_tree_view_column_start_editing (column, GTK_CELL_EDITABLE (cell_editable));
14718
14719   gtk_tree_view_real_set_cursor (tree_view, path, FALSE, TRUE);
14720   cell_area->y += pre_val - (int)tree_view->priv->vadjustment->value;
14721
14722   gtk_widget_size_request (GTK_WIDGET (cell_editable), &requisition);
14723
14724   GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_DRAW_KEYFOCUS);
14725
14726   if (requisition.height < cell_area->height)
14727     {
14728       gint diff = cell_area->height - requisition.height;
14729       gtk_tree_view_put (tree_view,
14730                          GTK_WIDGET (cell_editable),
14731                          cell_area->x, cell_area->y + diff/2,
14732                          cell_area->width, requisition.height);
14733     }
14734   else
14735     {
14736       gtk_tree_view_put (tree_view,
14737                          GTK_WIDGET (cell_editable),
14738                          cell_area->x, cell_area->y,
14739                          cell_area->width, cell_area->height);
14740     }
14741
14742   gtk_cell_editable_start_editing (GTK_CELL_EDITABLE (cell_editable),
14743                                    (GdkEvent *)event);
14744
14745   gtk_widget_grab_focus (GTK_WIDGET (cell_editable));
14746   g_signal_connect (cell_editable, "remove-widget",
14747                     G_CALLBACK (gtk_tree_view_remove_widget), tree_view);
14748 }
14749
14750 static void
14751 gtk_tree_view_stop_editing (GtkTreeView *tree_view,
14752                             gboolean     cancel_editing)
14753 {
14754   GtkTreeViewColumn *column;
14755   GtkCellRenderer *cell;
14756
14757   if (tree_view->priv->edited_column == NULL)
14758     return;
14759
14760   /*
14761    * This is very evil. We need to do this, because
14762    * gtk_cell_editable_editing_done may trigger gtk_tree_view_row_changed
14763    * later on. If gtk_tree_view_row_changed notices
14764    * tree_view->priv->edited_column != NULL, it'll call
14765    * gtk_tree_view_stop_editing again. Bad things will happen then.
14766    *
14767    * Please read that again if you intend to modify anything here.
14768    */
14769
14770   column = tree_view->priv->edited_column;
14771   tree_view->priv->edited_column = NULL;
14772
14773   cell = _gtk_tree_view_column_get_edited_cell (column);
14774   gtk_cell_renderer_stop_editing (cell, cancel_editing);
14775
14776   if (!cancel_editing)
14777     gtk_cell_editable_editing_done (column->editable_widget);
14778
14779   tree_view->priv->edited_column = column;
14780
14781   gtk_cell_editable_remove_widget (column->editable_widget);
14782 }
14783
14784
14785 /**
14786  * gtk_tree_view_set_hover_selection:
14787  * @tree_view: a #GtkTreeView
14788  * @hover: %TRUE to enable hover selection mode
14789  *
14790  * Enables of disables the hover selection mode of @tree_view.
14791  * Hover selection makes the selected row follow the pointer.
14792  * Currently, this works only for the selection modes
14793  * %GTK_SELECTION_SINGLE and %GTK_SELECTION_BROWSE.
14794  *
14795  * Since: 2.6
14796  **/
14797 void
14798 gtk_tree_view_set_hover_selection (GtkTreeView *tree_view,
14799                                    gboolean     hover)
14800 {
14801   hover = hover != FALSE;
14802
14803   if (hover != tree_view->priv->hover_selection)
14804     {
14805       tree_view->priv->hover_selection = hover;
14806
14807       g_object_notify (G_OBJECT (tree_view), "hover-selection");
14808     }
14809 }
14810
14811 /**
14812  * gtk_tree_view_get_hover_selection:
14813  * @tree_view: a #GtkTreeView
14814  *
14815  * Returns whether hover selection mode is turned on for @tree_view.
14816  *
14817  * Return value: %TRUE if @tree_view is in hover selection mode
14818  *
14819  * Since: 2.6
14820  **/
14821 gboolean
14822 gtk_tree_view_get_hover_selection (GtkTreeView *tree_view)
14823 {
14824   return tree_view->priv->hover_selection;
14825 }
14826
14827 /**
14828  * gtk_tree_view_set_hover_expand:
14829  * @tree_view: a #GtkTreeView
14830  * @expand: %TRUE to enable hover selection mode
14831  *
14832  * Enables of disables the hover expansion mode of @tree_view.
14833  * Hover expansion makes rows expand or collapse if the pointer
14834  * moves over them.
14835  *
14836  * Since: 2.6
14837  **/
14838 void
14839 gtk_tree_view_set_hover_expand (GtkTreeView *tree_view,
14840                                 gboolean     expand)
14841 {
14842   expand = expand != FALSE;
14843
14844   if (expand != tree_view->priv->hover_expand)
14845     {
14846       tree_view->priv->hover_expand = expand;
14847
14848       g_object_notify (G_OBJECT (tree_view), "hover-expand");
14849     }
14850 }
14851
14852 /**
14853  * gtk_tree_view_get_hover_expand:
14854  * @tree_view: a #GtkTreeView
14855  *
14856  * Returns whether hover expansion mode is turned on for @tree_view.
14857  *
14858  * Return value: %TRUE if @tree_view is in hover expansion mode
14859  *
14860  * Since: 2.6
14861  **/
14862 gboolean
14863 gtk_tree_view_get_hover_expand (GtkTreeView *tree_view)
14864 {
14865   return tree_view->priv->hover_expand;
14866 }
14867
14868 /**
14869  * gtk_tree_view_set_rubber_banding:
14870  * @tree_view: a #GtkTreeView
14871  * @enable: %TRUE to enable rubber banding
14872  *
14873  * Enables or disables rubber banding in @tree_view.  If the selection mode
14874  * is #GTK_SELECTION_MULTIPLE, rubber banding will allow the user to select
14875  * multiple rows by dragging the mouse.
14876  *
14877  * Since: 2.10
14878  **/
14879 void
14880 gtk_tree_view_set_rubber_banding (GtkTreeView *tree_view,
14881                                   gboolean     enable)
14882 {
14883   enable = enable != FALSE;
14884
14885   if (enable != tree_view->priv->rubber_banding_enable)
14886     {
14887       tree_view->priv->rubber_banding_enable = enable;
14888
14889       g_object_notify (G_OBJECT (tree_view), "rubber-banding");
14890     }
14891 }
14892
14893 /**
14894  * gtk_tree_view_get_rubber_banding:
14895  * @tree_view: a #GtkTreeView
14896  *
14897  * Returns whether rubber banding is turned on for @tree_view.  If the
14898  * selection mode is #GTK_SELECTION_MULTIPLE, rubber banding will allow the
14899  * user to select multiple rows by dragging the mouse.
14900  *
14901  * Return value: %TRUE if rubber banding in @tree_view is enabled.
14902  *
14903  * Since: 2.10
14904  **/
14905 gboolean
14906 gtk_tree_view_get_rubber_banding (GtkTreeView *tree_view)
14907 {
14908   return tree_view->priv->rubber_banding_enable;
14909 }
14910
14911 /**
14912  * gtk_tree_view_is_rubber_banding_active:
14913  * @tree_view: a #GtkTreeView
14914  *
14915  * Returns whether a rubber banding operation is currently being done
14916  * in @tree_view.
14917  *
14918  * Return value: %TRUE if a rubber banding operation is currently being
14919  * done in @tree_view.
14920  *
14921  * Since: 2.12
14922  **/
14923 gboolean
14924 gtk_tree_view_is_rubber_banding_active (GtkTreeView *tree_view)
14925 {
14926   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
14927
14928   if (tree_view->priv->rubber_banding_enable
14929       && tree_view->priv->rubber_band_status == RUBBER_BAND_ACTIVE)
14930     return TRUE;
14931
14932   return FALSE;
14933 }
14934
14935 /**
14936  * gtk_tree_view_get_row_separator_func:
14937  * @tree_view: a #GtkTreeView
14938  *
14939  * Returns the current row separator function.
14940  *
14941  * Return value: the current row separator function.
14942  *
14943  * Since: 2.6
14944  **/
14945 GtkTreeViewRowSeparatorFunc
14946 gtk_tree_view_get_row_separator_func (GtkTreeView *tree_view)
14947 {
14948   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), NULL);
14949
14950   return tree_view->priv->row_separator_func;
14951 }
14952
14953 /**
14954  * gtk_tree_view_set_row_separator_func:
14955  * @tree_view: a #GtkTreeView
14956  * @func: a #GtkTreeViewRowSeparatorFunc
14957  * @data: user data to pass to @func, or %NULL
14958  * @destroy: destroy notifier for @data, or %NULL
14959  *
14960  * Sets the row separator function, which is used to determine
14961  * whether a row should be drawn as a separator. If the row separator
14962  * function is %NULL, no separators are drawn. This is the default value.
14963  *
14964  * Since: 2.6
14965  **/
14966 void
14967 gtk_tree_view_set_row_separator_func (GtkTreeView                 *tree_view,
14968                                       GtkTreeViewRowSeparatorFunc  func,
14969                                       gpointer                     data,
14970                                       GDestroyNotify               destroy)
14971 {
14972   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
14973
14974   if (tree_view->priv->row_separator_destroy)
14975     tree_view->priv->row_separator_destroy (tree_view->priv->row_separator_data);
14976
14977   tree_view->priv->row_separator_func = func;
14978   tree_view->priv->row_separator_data = data;
14979   tree_view->priv->row_separator_destroy = destroy;
14980 }
14981
14982
14983 static void
14984 gtk_tree_view_grab_notify (GtkWidget *widget,
14985                            gboolean   was_grabbed)
14986 {
14987   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
14988
14989   tree_view->priv->in_grab = !was_grabbed;
14990
14991   if (!was_grabbed)
14992     {
14993       tree_view->priv->pressed_button = -1;
14994
14995       if (tree_view->priv->rubber_band_status)
14996         gtk_tree_view_stop_rubber_band (tree_view);
14997     }
14998 }
14999
15000 static void
15001 gtk_tree_view_state_changed (GtkWidget      *widget,
15002                              GtkStateType    previous_state)
15003 {
15004   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15005
15006   if (GTK_WIDGET_REALIZED (widget))
15007     {
15008       gdk_window_set_back_pixmap (widget->window, NULL, FALSE);
15009       gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
15010     }
15011
15012   gtk_widget_queue_draw (widget);
15013 }
15014
15015 /**
15016  * gtk_tree_view_get_grid_lines:
15017  * @tree_view: a #GtkTreeView
15018  *
15019  * Returns which grid lines are enabled in @tree_view.
15020  *
15021  * Return value: a #GtkTreeViewGridLines value indicating which grid lines
15022  * are enabled.
15023  *
15024  * Since: 2.10
15025  */
15026 GtkTreeViewGridLines
15027 gtk_tree_view_get_grid_lines (GtkTreeView *tree_view)
15028 {
15029   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15030
15031   return tree_view->priv->grid_lines;
15032 }
15033
15034 /**
15035  * gtk_tree_view_set_grid_lines:
15036  * @tree_view: a #GtkTreeView
15037  * @grid_lines: a #GtkTreeViewGridLines value indicating which grid lines to
15038  * enable.
15039  *
15040  * Sets which grid lines to draw in @tree_view.
15041  *
15042  * Since: 2.10
15043  */
15044 void
15045 gtk_tree_view_set_grid_lines (GtkTreeView           *tree_view,
15046                               GtkTreeViewGridLines   grid_lines)
15047 {
15048   GtkTreeViewPrivate *priv;
15049   GtkWidget *widget;
15050   GtkTreeViewGridLines old_grid_lines;
15051
15052   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15053
15054   priv = tree_view->priv;
15055   widget = GTK_WIDGET (tree_view);
15056
15057   old_grid_lines = priv->grid_lines;
15058   priv->grid_lines = grid_lines;
15059
15060   if (GTK_WIDGET_REALIZED (widget))
15061     {
15062       if (grid_lines == GTK_TREE_VIEW_GRID_LINES_NONE &&
15063           priv->grid_line_gc)
15064         {
15065           g_object_unref (priv->grid_line_gc);
15066           priv->grid_line_gc = NULL;
15067         }
15068
15069       if (grid_lines != GTK_TREE_VIEW_GRID_LINES_NONE &&
15070           !priv->grid_line_gc)
15071         {
15072           gint line_width;
15073           gint8 *dash_list;
15074
15075           gtk_widget_style_get (widget,
15076                                 "grid-line-width", &line_width,
15077                                 "grid-line-pattern", (gchar *)&dash_list,
15078                                 NULL);
15079
15080           priv->grid_line_gc = gdk_gc_new (widget->window);
15081           gdk_gc_copy (priv->grid_line_gc, widget->style->black_gc);
15082
15083           gdk_gc_set_line_attributes (priv->grid_line_gc, line_width,
15084                                       GDK_LINE_ON_OFF_DASH,
15085                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15086           gdk_gc_set_dashes (priv->grid_line_gc, 0, dash_list, 2);
15087
15088           g_free (dash_list);
15089         }
15090     }
15091
15092   if (old_grid_lines != grid_lines)
15093     {
15094       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15095
15096       g_object_notify (G_OBJECT (tree_view), "enable-grid-lines");
15097     }
15098 }
15099
15100 /**
15101  * gtk_tree_view_get_enable_tree_lines:
15102  * @tree_view: a #GtkTreeView.
15103  *
15104  * Returns whether or not tree lines are drawn in @tree_view.
15105  *
15106  * Return value: %TRUE if tree lines are drawn in @tree_view, %FALSE
15107  * otherwise.
15108  *
15109  * Since: 2.10
15110  */
15111 gboolean
15112 gtk_tree_view_get_enable_tree_lines (GtkTreeView *tree_view)
15113 {
15114   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15115
15116   return tree_view->priv->tree_lines_enabled;
15117 }
15118
15119 /**
15120  * gtk_tree_view_set_enable_tree_lines:
15121  * @tree_view: a #GtkTreeView
15122  * @enabled: %TRUE to enable tree line drawing, %FALSE otherwise.
15123  *
15124  * Sets whether to draw lines interconnecting the expanders in @tree_view.
15125  * This does not have any visible effects for lists.
15126  *
15127  * Since: 2.10
15128  */
15129 void
15130 gtk_tree_view_set_enable_tree_lines (GtkTreeView *tree_view,
15131                                      gboolean     enabled)
15132 {
15133   GtkTreeViewPrivate *priv;
15134   GtkWidget *widget;
15135   gboolean was_enabled;
15136
15137   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15138
15139   enabled = enabled != FALSE;
15140
15141   priv = tree_view->priv;
15142   widget = GTK_WIDGET (tree_view);
15143
15144   was_enabled = priv->tree_lines_enabled;
15145
15146   priv->tree_lines_enabled = enabled;
15147
15148   if (GTK_WIDGET_REALIZED (widget))
15149     {
15150       if (!enabled && priv->tree_line_gc)
15151         {
15152           g_object_unref (priv->tree_line_gc);
15153           priv->tree_line_gc = NULL;
15154         }
15155
15156       if (enabled && !priv->tree_line_gc)
15157         {
15158           gint line_width;
15159           gint8 *dash_list;
15160           gtk_widget_style_get (widget,
15161                                 "tree-line-width", &line_width,
15162                                 "tree-line-pattern", (gchar *)&dash_list,
15163                                 NULL);
15164
15165           priv->tree_line_gc = gdk_gc_new (widget->window);
15166           gdk_gc_copy (priv->tree_line_gc, widget->style->black_gc);
15167
15168           gdk_gc_set_line_attributes (priv->tree_line_gc, line_width,
15169                                       GDK_LINE_ON_OFF_DASH,
15170                                       GDK_CAP_BUTT, GDK_JOIN_MITER);
15171           gdk_gc_set_dashes (priv->tree_line_gc, 0, dash_list, 2);
15172
15173           g_free (dash_list);
15174         }
15175     }
15176
15177   if (was_enabled != enabled)
15178     {
15179       gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15180
15181       g_object_notify (G_OBJECT (tree_view), "enable-tree-lines");
15182     }
15183 }
15184
15185
15186 /**
15187  * gtk_tree_view_set_show_expanders:
15188  * @tree_view: a #GtkTreeView
15189  * @enabled: %TRUE to enable expander drawing, %FALSE otherwise.
15190  *
15191  * Sets whether to draw and enable expanders and indent child rows in
15192  * @tree_view.  When disabled there will be no expanders visible in trees
15193  * and there will be no way to expand and collapse rows by default.  Also
15194  * note that hiding the expanders will disable the default indentation.  You
15195  * can set a custom indentation in this case using
15196  * gtk_tree_view_set_level_indentation().
15197  * This does not have any visible effects for lists.
15198  *
15199  * Since: 2.12
15200  */
15201 void
15202 gtk_tree_view_set_show_expanders (GtkTreeView *tree_view,
15203                                   gboolean     enabled)
15204 {
15205   gboolean was_enabled;
15206
15207   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15208
15209   enabled = enabled != FALSE;
15210   was_enabled = GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15211
15212   if (enabled)
15213     GTK_TREE_VIEW_SET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15214   else
15215     GTK_TREE_VIEW_UNSET_FLAG (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15216
15217   if (enabled != was_enabled)
15218     gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15219 }
15220
15221 /**
15222  * gtk_tree_view_get_show_expanders:
15223  * @tree_view: a #GtkTreeView.
15224  *
15225  * Returns whether or not expanders are drawn in @tree_view.
15226  *
15227  * Return value: %TRUE if expanders are drawn in @tree_view, %FALSE
15228  * otherwise.
15229  *
15230  * Since: 2.12
15231  */
15232 gboolean
15233 gtk_tree_view_get_show_expanders (GtkTreeView *tree_view)
15234 {
15235   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15236
15237   return GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_SHOW_EXPANDERS);
15238 }
15239
15240 /**
15241  * gtk_tree_view_set_level_indentation:
15242  * @tree_view: a #GtkTreeView
15243  * @indentation: the amount, in pixels, of extra indentation in @tree_view.
15244  *
15245  * Sets the amount of extra indentation for child levels to use in @tree_view
15246  * in addition to the default indentation.  The value should be specified in
15247  * pixels, a value of 0 disables this feature and in this case only the default
15248  * indentation will be used.
15249  * This does not have any visible effects for lists.
15250  *
15251  * Since: 2.12
15252  */
15253 void
15254 gtk_tree_view_set_level_indentation (GtkTreeView *tree_view,
15255                                      gint         indentation)
15256 {
15257   tree_view->priv->level_indentation = indentation;
15258
15259   gtk_widget_queue_draw (GTK_WIDGET (tree_view));
15260 }
15261
15262 /**
15263  * gtk_tree_view_get_level_indentation:
15264  * @tree_view: a #GtkTreeView.
15265  *
15266  * Returns the amount, in pixels, of extra indentation for child levels
15267  * in @tree_view.
15268  *
15269  * Return value: the amount of extra indentation for child levels in
15270  * @tree_view.  A return value of 0 means that this feature is disabled.
15271  *
15272  * Since: 2.12
15273  */
15274 gint
15275 gtk_tree_view_get_level_indentation (GtkTreeView *tree_view)
15276 {
15277   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15278
15279   return tree_view->priv->level_indentation;
15280 }
15281
15282 /**
15283  * gtk_tree_view_set_tooltip_row:
15284  * @tree_view: a #GtkTreeView
15285  * @tooltip: a #GtkTooltip
15286  * @path: a #GtkTreePath
15287  *
15288  * Sets the tip area of @tooltip to be the area covered by the row at @path.
15289  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15290  * See also gtk_tooltip_set_tip_area().
15291  *
15292  * Since: 2.12
15293  */
15294 void
15295 gtk_tree_view_set_tooltip_row (GtkTreeView *tree_view,
15296                                GtkTooltip  *tooltip,
15297                                GtkTreePath *path)
15298 {
15299   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15300   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15301
15302   gtk_tree_view_set_tooltip_cell (tree_view, tooltip, path, NULL, NULL);
15303 }
15304
15305 /**
15306  * gtk_tree_view_set_tooltip_cell:
15307  * @tree_view: a #GtkTreeView
15308  * @tooltip: a #GtkTooltip
15309  * @path: a #GtkTreePath or %NULL
15310  * @column: a #GtkTreeViewColumn or %NULL
15311  * @cell: a #GtkCellRenderer or %NULL
15312  *
15313  * Sets the tip area of @tooltip to the area @path, @column and @cell have
15314  * in common.  For example if @path is %NULL and @column is set, the tip
15315  * area will be set to the full area covered by @column.  See also
15316  * gtk_tooltip_set_tip_area().
15317  *
15318  * Note that if @path is not specified and @cell is set and part of a column
15319  * containing the expander, the tooltip might not show and hide at the correct
15320  * position.  In such cases @path must be set to the current node under the
15321  * mouse cursor for this function to operate correctly.
15322  *
15323  * See also gtk_tree_view_set_tooltip_column() for a simpler alternative.
15324  *
15325  * Since: 2.12
15326  */
15327 void
15328 gtk_tree_view_set_tooltip_cell (GtkTreeView       *tree_view,
15329                                 GtkTooltip        *tooltip,
15330                                 GtkTreePath       *path,
15331                                 GtkTreeViewColumn *column,
15332                                 GtkCellRenderer   *cell)
15333 {
15334   GdkRectangle rect;
15335
15336   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15337   g_return_if_fail (GTK_IS_TOOLTIP (tooltip));
15338   g_return_if_fail (column == NULL || GTK_IS_TREE_VIEW_COLUMN (column));
15339   g_return_if_fail (cell == NULL || GTK_IS_CELL_RENDERER (cell));
15340
15341   /* Determine x values. */
15342   if (column && cell)
15343     {
15344       GdkRectangle tmp;
15345       gint start, width;
15346
15347       /* We always pass in path here, whether it is NULL or not.
15348        * For cells in expander columns path must be specified so that
15349        * we can correctly account for the indentation.  This also means
15350        * that the tooltip is constrained vertically by the "Determine y
15351        * values" code below; this is not a real problem since cells actually
15352        * don't stretch vertically in constrast to columns.
15353        */
15354       gtk_tree_view_get_cell_area (tree_view, path, column, &tmp);
15355       gtk_tree_view_column_cell_get_position (column, cell, &start, &width);
15356
15357       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15358                                                          tmp.x + start, 0,
15359                                                          &rect.x, NULL);
15360       rect.width = width;
15361     }
15362   else if (column)
15363     {
15364       GdkRectangle tmp;
15365
15366       gtk_tree_view_get_background_area (tree_view, NULL, column, &tmp);
15367       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15368                                                          tmp.x, 0,
15369                                                          &rect.x, NULL);
15370       rect.width = tmp.width;
15371     }
15372   else
15373     {
15374       rect.x = 0;
15375       rect.width = GTK_WIDGET (tree_view)->allocation.width;
15376     }
15377
15378   /* Determine y values. */
15379   if (path)
15380     {
15381       GdkRectangle tmp;
15382
15383       gtk_tree_view_get_background_area (tree_view, path, NULL, &tmp);
15384       gtk_tree_view_convert_bin_window_to_widget_coords (tree_view,
15385                                                          0, tmp.y,
15386                                                          NULL, &rect.y);
15387       rect.height = tmp.height;
15388     }
15389   else
15390     {
15391       rect.y = 0;
15392       rect.height = tree_view->priv->vadjustment->page_size;
15393     }
15394
15395   gtk_tooltip_set_tip_area (tooltip, &rect);
15396 }
15397
15398 /**
15399  * gtk_tree_view_get_tooltip_context:
15400  * @tree_view: a #GtkTreeView
15401  * @x: the x coordinate (relative to widget coordinates)
15402  * @y: the y coordinate (relative to widget coordinates)
15403  * @keyboard_tip: whether this is a keyboard tooltip or not
15404  * @model: a pointer to receive a #GtkTreeModel or %NULL
15405  * @path: a pointer to receive a #GtkTreePath or %NULL
15406  * @iter: a pointer to receive a #GtkTreeIter or %NULL
15407  *
15408  * This function is supposed to be used in a #GtkWidget::query-tooltip
15409  * signal handler for #GtkTreeView.  The @x, @y and @keyboard_tip values
15410  * which are received in the signal handler, should be passed to this
15411  * function without modification.
15412  *
15413  * The return value indicates whether there is a tree view row at the given
15414  * coordinates (%TRUE) or not (%FALSE) for mouse tooltips.  For keyboard
15415  * tooltips the row returned will be the cursor row.  When %TRUE, then any of
15416  * @model, @path and @iter which have been provided will be set to point to
15417  * that row and the corresponding model.  @x and @y will always be converted
15418  * to be relative to @tree_view's bin_window if @keyboard_tooltip is %FALSE.
15419  *
15420  * Return value: whether or not the given tooltip context points to a row.
15421  *
15422  * Since: 2.12
15423  */
15424 gboolean
15425 gtk_tree_view_get_tooltip_context (GtkTreeView   *tree_view,
15426                                    gint          *x,
15427                                    gint          *y,
15428                                    gboolean       keyboard_tip,
15429                                    GtkTreeModel **model,
15430                                    GtkTreePath  **path,
15431                                    GtkTreeIter   *iter)
15432 {
15433   GtkTreePath *tmppath = NULL;
15434
15435   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), FALSE);
15436   g_return_val_if_fail (x != NULL, FALSE);
15437   g_return_val_if_fail (y != NULL, FALSE);
15438
15439   if (keyboard_tip)
15440     {
15441       gtk_tree_view_get_cursor (tree_view, &tmppath, NULL);
15442
15443       if (!tmppath)
15444         return FALSE;
15445     }
15446   else
15447     {
15448       gtk_tree_view_convert_widget_to_bin_window_coords (tree_view, *x, *y,
15449                                                          x, y);
15450
15451       if (!gtk_tree_view_get_path_at_pos (tree_view, *x, *y,
15452                                           &tmppath, NULL, NULL, NULL))
15453         return FALSE;
15454     }
15455
15456   if (model)
15457     *model = gtk_tree_view_get_model (tree_view);
15458
15459   if (iter)
15460     gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view),
15461                              iter, tmppath);
15462
15463   if (path)
15464     *path = tmppath;
15465   else
15466     gtk_tree_path_free (tmppath);
15467
15468   return TRUE;
15469 }
15470
15471 static gboolean
15472 gtk_tree_view_set_tooltip_query_cb (GtkWidget  *widget,
15473                                     gint        x,
15474                                     gint        y,
15475                                     gboolean    keyboard_tip,
15476                                     GtkTooltip *tooltip,
15477                                     gpointer    data)
15478 {
15479   GValue value = { 0, };
15480   GValue transformed = { 0, };
15481   GtkTreeIter iter;
15482   GtkTreePath *path;
15483   GtkTreeModel *model;
15484   GtkTreeView *tree_view = GTK_TREE_VIEW (widget);
15485
15486   if (!gtk_tree_view_get_tooltip_context (GTK_TREE_VIEW (widget),
15487                                           &x, &y,
15488                                           keyboard_tip,
15489                                           &model, &path, &iter))
15490     return FALSE;
15491
15492   gtk_tree_model_get_value (model, &iter,
15493                             tree_view->priv->tooltip_column, &value);
15494
15495   g_value_init (&transformed, G_TYPE_STRING);
15496
15497   if (!g_value_transform (&value, &transformed))
15498     {
15499       g_value_unset (&value);
15500       gtk_tree_path_free (path);
15501
15502       return FALSE;
15503     }
15504
15505   g_value_unset (&value);
15506
15507   if (!g_value_get_string (&transformed))
15508     {
15509       g_value_unset (&transformed);
15510       gtk_tree_path_free (path);
15511
15512       return FALSE;
15513     }
15514
15515   gtk_tooltip_set_markup (tooltip, g_value_get_string (&transformed));
15516   gtk_tree_view_set_tooltip_row (tree_view, tooltip, path);
15517
15518   gtk_tree_path_free (path);
15519   g_value_unset (&transformed);
15520
15521   return TRUE;
15522 }
15523
15524 /**
15525  * gtk_tree_view_set_tooltip_column:
15526  * @tree_view: a #GtkTreeView
15527  * @column: an integer, which is a valid column number for @tree_view's model
15528  *
15529  * If you only plan to have simple (text-only) tooltips on full rows, you
15530  * can use this function to have #GtkTreeView handle these automatically
15531  * for you. @column should be set to the column in @tree_view's model
15532  * containing the tooltip texts, or -1 to disable this feature.
15533  *
15534  * When enabled, #GtkWidget::has-tooltip will be set to %TRUE and
15535  * @tree_view will connect a #GtkWidget::query-tooltip signal handler.
15536  *
15537  * Note that the signal handler sets the text with gtk_tooltip_set_markup(),
15538  * so &amp;, &lt;, etc have to be escaped in the text.
15539  *
15540  * Since: 2.12
15541  */
15542 void
15543 gtk_tree_view_set_tooltip_column (GtkTreeView *tree_view,
15544                                   gint         column)
15545 {
15546   g_return_if_fail (GTK_IS_TREE_VIEW (tree_view));
15547
15548   if (column == tree_view->priv->tooltip_column)
15549     return;
15550
15551   if (column == -1)
15552     {
15553       g_signal_handlers_disconnect_by_func (tree_view,
15554                                             gtk_tree_view_set_tooltip_query_cb,
15555                                             NULL);
15556       gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), FALSE);
15557     }
15558   else
15559     {
15560       if (tree_view->priv->tooltip_column == -1)
15561         {
15562           g_signal_connect (tree_view, "query-tooltip",
15563                             G_CALLBACK (gtk_tree_view_set_tooltip_query_cb), NULL);
15564           gtk_widget_set_has_tooltip (GTK_WIDGET (tree_view), TRUE);
15565         }
15566     }
15567
15568   tree_view->priv->tooltip_column = column;
15569   g_object_notify (G_OBJECT (tree_view), "tooltip-column");
15570 }
15571
15572 /**
15573  * gtk_tree_view_get_tooltip_column:
15574  * @tree_view: a #GtkTreeView
15575  *
15576  * Returns the column of @tree_view's model which is being used for
15577  * displaying tooltips on @tree_view's rows.
15578  *
15579  * Return value: the index of the tooltip column that is currently being
15580  * used, or -1 if this is disabled.
15581  *
15582  * Since: 2.12
15583  */
15584 gint
15585 gtk_tree_view_get_tooltip_column (GtkTreeView *tree_view)
15586 {
15587   g_return_val_if_fail (GTK_IS_TREE_VIEW (tree_view), 0);
15588
15589   return tree_view->priv->tooltip_column;
15590 }
15591
15592 #define __GTK_TREE_VIEW_C__
15593 #include "gtkaliasdef.c"