gtktreeview.c 226 KB
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/* gtktreeview.c
 * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 */


#include "gtktreeview.h"
#include "gtkrbtree.h"
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#include "gtktreednd.h"
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#include "gtktreeprivate.h"
#include "gtkcellrenderer.h"
#include "gtksignal.h"
#include "gtkmain.h"
#include "gtkbutton.h"
#include "gtkalignment.h"
#include "gtklabel.h"
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#include "gtkhbox.h"
#include "gtkarrow.h"
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#include "gtkintl.h"
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#include "gtkbindings.h"
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#include <gdk/gdkkeysyms.h>

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#if defined (GDK_WINDOWING_X11)
#include "x11/gdkx.h"
#elif defined (GDK_WINDOWING_WIN32)
#include "win32/gdkwin32.h"
#elif defined(GDK_WINDOWING_FB)
#include "linux-fb/gdkfb.h"
#elif defined (GDK_WINDOWING_NANOX)
#include "nanox/gdkprivate-nanox.h"
#endif

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#define SCROLL_EDGE_SIZE 15
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/* The "background" areas of all rows/cells add up to cover the entire tree.
 * The background includes all inter-row and inter-cell spacing.
 * The "cell" areas are the cell_area passed in to gtk_cell_renderer_render(),
 * i.e. just the cells, no spacing.
 */
#define BACKGROUND_FIRST_PIXEL(tree_view,tree,node) (_gtk_rbtree_node_find_offset ((tree), (node)) + TREE_VIEW_HEADER_HEIGHT ((tree_view)))
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#define CELL_FIRST_PIXEL(tree_view,tree,node,separator) (BACKGROUND_FIRST_PIXEL (tree_view,tree,node) + separator/2)
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#define BACKGROUND_HEIGHT(node) (GTK_RBNODE_GET_HEIGHT (node))
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#define CELL_HEIGHT(node, separator) (BACKGROUND_HEIGHT (node) - separator);
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#define TREE_WINDOW_Y_TO_RBTREE_Y(tree_view,y) ((y) - TREE_VIEW_HEADER_HEIGHT (tree_view))
#define RBTREE_Y_TO_TREE_WINDOW_Y(tree_view,y) ((y) + TREE_VIEW_HEADER_HEIGHT (tree_view))
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typedef struct _GtkTreeViewChild GtkTreeViewChild;
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struct _GtkTreeViewChild
{
  GtkWidget *widget;
  gint x;
  gint y;
};

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typedef struct _TreeViewDragInfo TreeViewDragInfo;
struct _TreeViewDragInfo
{
  GdkModifierType start_button_mask;
  GtkTargetList *source_target_list;
  GdkDragAction source_actions;
  GClosure *row_draggable_closure;

  GtkTargetList *dest_target_list;
  GClosure *location_droppable_closure;

  guint source_set : 1;
  guint dest_set : 1;
};


/* Signals */
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enum
{
  ROW_ACTIVATED,
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  EXPAND_ROW,
  COLLAPSE_ROW,
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  COLUMNS_CHANGED,
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  MOVE_CURSOR,
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  SET_ANCHOR,
  TOGGLE_CURSOR_ROW,
  EXPAND_COLLAPSE_CURSOR_ROW,
  SELECT_CURSOR_PARENT,
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  LAST_SIGNAL
};

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/* Properties */
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enum {
  PROP_0,
  PROP_MODEL,
  PROP_HADJUSTMENT,
  PROP_VADJUSTMENT,
  PROP_HEADERS_VISIBLE,
  PROP_HEADERS_CLICKABLE,
  PROP_EXPANDER_COLUMN,
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  PROP_REORDERABLE,
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  PROP_RULES_HINT
};
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static void     gtk_tree_view_class_init           (GtkTreeViewClass *klass);
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static void     gtk_tree_view_init                 (GtkTreeView      *tree_view);

/* object signals */
static void     gtk_tree_view_finalize             (GObject          *object);
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static void     gtk_tree_view_set_property         (GObject         *object,
						    guint            prop_id,
						    const GValue    *value,
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						    GParamSpec      *pspec);
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static void     gtk_tree_view_get_property         (GObject         *object,
						    guint            prop_id,
						    GValue          *value,
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						    GParamSpec      *pspec);
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/* gtkobject signals */
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static void     gtk_tree_view_destroy              (GtkObject        *object);

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/* gtkwidget signals */
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static void     gtk_tree_view_setup_model          (GtkTreeView      *tree_view);
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static void     gtk_tree_view_realize              (GtkWidget        *widget);
static void     gtk_tree_view_unrealize            (GtkWidget        *widget);
static void     gtk_tree_view_map                  (GtkWidget        *widget);
static void     gtk_tree_view_size_request         (GtkWidget        *widget,
						    GtkRequisition   *requisition);
static void     gtk_tree_view_size_allocate        (GtkWidget        *widget,
						    GtkAllocation    *allocation);
static gboolean gtk_tree_view_expose               (GtkWidget        *widget,
						    GdkEventExpose   *event);
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static gboolean gtk_tree_view_key_press            (GtkWidget        *widget,
						    GdkEventKey      *event);
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static gboolean gtk_tree_view_motion               (GtkWidget        *widget,
						    GdkEventMotion   *event);
static gboolean gtk_tree_view_enter_notify         (GtkWidget        *widget,
						    GdkEventCrossing *event);
static gboolean gtk_tree_view_leave_notify         (GtkWidget        *widget,
						    GdkEventCrossing *event);
static gboolean gtk_tree_view_button_press         (GtkWidget        *widget,
						    GdkEventButton   *event);
static gboolean gtk_tree_view_button_release       (GtkWidget        *widget,
						    GdkEventButton   *event);
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static void     gtk_tree_view_set_focus_child      (GtkContainer     *container,
						    GtkWidget        *child);
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static void     gtk_tree_view_draw_focus           (GtkWidget        *widget);
static gint     gtk_tree_view_focus_in             (GtkWidget        *widget,
						    GdkEventFocus    *event);
static gint     gtk_tree_view_focus_out            (GtkWidget        *widget,
						    GdkEventFocus    *event);
static gint     gtk_tree_view_focus                (GtkContainer     *container,
						    GtkDirectionType  direction);

/* container signals */
static void     gtk_tree_view_remove               (GtkContainer     *container,
						    GtkWidget        *widget);
static void     gtk_tree_view_forall               (GtkContainer     *container,
						    gboolean          include_internals,
						    GtkCallback       callback,
						    gpointer          callback_data);

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/* Source side drag signals */
static void gtk_tree_view_drag_begin       (GtkWidget        *widget,
                                            GdkDragContext   *context);
static void gtk_tree_view_drag_end         (GtkWidget        *widget,
                                            GdkDragContext   *context);
static void gtk_tree_view_drag_data_get    (GtkWidget        *widget,
                                            GdkDragContext   *context,
                                            GtkSelectionData *selection_data,
                                            guint             info,
                                            guint             time);
static void gtk_tree_view_drag_data_delete (GtkWidget        *widget,
                                            GdkDragContext   *context);

/* Target side drag signals */
static void     gtk_tree_view_drag_leave         (GtkWidget        *widget,
                                                  GdkDragContext   *context,
                                                  guint             time);
static gboolean gtk_tree_view_drag_motion        (GtkWidget        *widget,
                                                  GdkDragContext   *context,
                                                  gint              x,
                                                  gint              y,
                                                  guint             time);
static gboolean gtk_tree_view_drag_drop          (GtkWidget        *widget,
                                                  GdkDragContext   *context,
                                                  gint              x,
                                                  gint              y,
                                                  guint             time);
static void     gtk_tree_view_drag_data_received (GtkWidget        *widget,
                                                  GdkDragContext   *context,
                                                  gint              x,
                                                  gint              y,
                                                  GtkSelectionData *selection_data,
                                                  guint             info,
                                                  guint             time);

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/* tree_model signals */
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static void gtk_tree_view_set_adjustments                 (GtkTreeView     *tree_view,
							   GtkAdjustment   *hadj,
							   GtkAdjustment   *vadj);
static void gtk_tree_view_real_move_cursor                (GtkTreeView     *tree_view,
							   GtkMovementStep  step,
							   gint             count,
							   gboolean         extend_selection);
static void gtk_tree_view_real_set_anchor                 (GtkTreeView     *tree_view);
static void gtk_tree_view_real_toggle_cursor_row          (GtkTreeView     *tree_view);
static void gtk_tree_view_real_expand_collapse_cursor_row (GtkTreeView     *tree_view,
							   gboolean         logical,
							   gboolean         expand,
							   gboolean         open_all);
static void gtk_tree_view_real_select_cursor_parent       (GtkTreeView     *tree_view);
static void gtk_tree_view_range_changed                   (GtkTreeModel    *model,
							   GtkTreePath     *path,
							   GtkTreeIter     *iter,
							   GtkTreePath     *end_path,
							   GtkTreeIter     *end_iter,
							   gpointer         data);
static void gtk_tree_view_inserted                        (GtkTreeModel    *model,
							   GtkTreePath     *path,
							   GtkTreeIter     *iter,
							   gpointer         data);
static void gtk_tree_view_has_child_toggled               (GtkTreeModel    *model,
							   GtkTreePath     *path,
							   GtkTreeIter     *iter,
							   gpointer         data);
static void gtk_tree_view_deleted                         (GtkTreeModel    *model,
							   GtkTreePath     *path,
							   gpointer         data);
static void gtk_tree_view_reordered                       (GtkTreeModel    *model,
							   GtkTreePath     *parent,
							   GtkTreeIter     *iter,
							   gint            *new_order,
							   gpointer         data);




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/* Internal functions */
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static void     gtk_tree_view_add_move_binding     (GtkBindingSet    *binding_set,
						    guint             keyval,
						    guint             modmask,
						    GtkMovementStep   step,
						    gint              count);
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static void     gtk_tree_view_unref_tree           (GtkTreeView      *tree_view,
						    GtkRBTree        *tree);
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static void     gtk_tree_view_queue_draw_node      (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
						    GtkRBNode        *node,
						    GdkRectangle     *clip_rect);
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static void     gtk_tree_view_queue_draw_path      (GtkTreeView      *tree_view,
                                                    GtkTreePath      *path,
                                                    GdkRectangle     *clip_rect);
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static void     gtk_tree_view_draw_arrow           (GtkTreeView      *tree_view,
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                                                    GtkRBTree        *tree,
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						    GtkRBNode        *node,
						    gint              x,
						    gint              y);
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static void     gtk_tree_view_get_arrow_xrange     (GtkTreeView      *tree_view,
                                                    gint              *x1,
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                                                    gint              *x2);
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static gint     gtk_tree_view_new_column_width     (GtkTreeView      *tree_view,
						    gint              i,
						    gint             *x);
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static void     gtk_tree_view_ensure_scroll_timeout(GtkTreeView      *tree_view,
						    GFunc             func);
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static void     gtk_tree_view_adjustment_changed   (GtkAdjustment    *adjustment,
						    GtkTreeView      *tree_view);
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static gint     gtk_tree_view_insert_iter_height   (GtkTreeView      *tree_view,
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						    GtkRBTree        *tree,
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						    GtkTreeIter      *iter,
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						    gint              depth);
static void     gtk_tree_view_build_tree           (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
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						    GtkTreeIter      *iter,
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						    gint              depth,
						    gboolean          recurse,
						    gboolean          calc_bounds);
static void     gtk_tree_view_calc_size            (GtkTreeView      *priv,
						    GtkRBTree        *tree,
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						    GtkTreeIter      *iter,
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						    gint              depth);
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static gboolean gtk_tree_view_discover_dirty_iter  (GtkTreeView      *tree_view,
						    GtkTreeIter      *iter,
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						    gint              depth,
						    gint             *height);
static void     gtk_tree_view_discover_dirty       (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
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						    GtkTreeIter      *iter,
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						    gint              depth);
static void     gtk_tree_view_check_dirty          (GtkTreeView      *tree_view);
static void     gtk_tree_view_clamp_node_visible   (GtkTreeView      *tree_view,
						    GtkRBTree        *tree,
						    GtkRBNode        *node);
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static gboolean gtk_tree_view_maybe_begin_dragging_row (GtkTreeView      *tree_view,
                                                        GdkEventMotion   *event);
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static void     _gtk_tree_view_update_col_width    (GtkTreeView      *tree_view);
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static void gtk_tree_view_set_cursor_focus         (GtkTreeView *tree_view);
static void gtk_tree_view_move_cursor_up_down      (GtkTreeView *tree_view,
						    gint         count,
						    gboolean     extend_selection);
static void gtk_tree_view_move_cursor_page_up_down (GtkTreeView *tree_view,
						    gint         count,
						    gboolean     extend_selection);
static void gtk_tree_view_move_cursor_left_right   (GtkTreeView *tree_view,
						    gint         count);
static void gtk_tree_view_move_cursor_start_end    (GtkTreeView *tree_view,
						    gint         count,
						    gboolean     extend_selection);
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static gboolean gtk_tree_view_real_collapse_row (GtkTreeView *tree_view,
						 GtkTreePath *path,
						 GtkRBTree   *tree,
						 GtkRBNode   *node);
static gboolean gtk_tree_view_real_expand_row (GtkTreeView *tree_view,
					       GtkTreePath *path,
					       GtkRBTree   *tree,
					       GtkRBNode   *node,
					       gboolean     open_all);
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static GtkContainerClass *parent_class = NULL;
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static guint tree_view_signals[LAST_SIGNAL] = { 0 };
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342 343 344 345 346


/* GType Methods
 */

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GtkType
gtk_tree_view_get_type (void)
{
  static GtkType tree_view_type = 0;

  if (!tree_view_type)
    {
      static const GTypeInfo tree_view_info =
      {
        sizeof (GtkTreeViewClass),
	NULL,		/* base_init */
	NULL,		/* base_finalize */
        (GClassInitFunc) gtk_tree_view_class_init,
	NULL,		/* class_finalize */
	NULL,		/* class_data */
        sizeof (GtkTreeView),
	0,              /* n_preallocs */
        (GInstanceInitFunc) gtk_tree_view_init
      };

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      tree_view_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkTreeView", &tree_view_info, 0);
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    }

  return tree_view_type;
}

static void
gtk_tree_view_class_init (GtkTreeViewClass *class)
{
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  GObjectClass *o_class;
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  GtkObjectClass *object_class;
  GtkWidgetClass *widget_class;
  GtkContainerClass *container_class;
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  GtkBindingSet *binding_set;
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  parent_class = g_type_class_peek_parent (class);
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  binding_set = gtk_binding_set_by_class (class);
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  o_class = (GObjectClass *) class;
  object_class = (GtkObjectClass *) class;
  widget_class = (GtkWidgetClass *) class;
  container_class = (GtkContainerClass *) class;

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  /* GObject signals */
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  o_class->set_property = gtk_tree_view_set_property;
  o_class->get_property = gtk_tree_view_get_property;
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  o_class->finalize = gtk_tree_view_finalize;
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  /* GtkObject signals */
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  object_class->destroy = gtk_tree_view_destroy;
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  /* GtkWidget signals */
  widget_class->map = gtk_tree_view_map;
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  widget_class->realize = gtk_tree_view_realize;
  widget_class->unrealize = gtk_tree_view_unrealize;
  widget_class->size_request = gtk_tree_view_size_request;
  widget_class->size_allocate = gtk_tree_view_size_allocate;
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  widget_class->button_press_event = gtk_tree_view_button_press;
  widget_class->button_release_event = gtk_tree_view_button_release;
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  widget_class->motion_notify_event = gtk_tree_view_motion;
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  widget_class->expose_event = gtk_tree_view_expose;
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  widget_class->key_press_event = gtk_tree_view_key_press;
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  widget_class->enter_notify_event = gtk_tree_view_enter_notify;
  widget_class->leave_notify_event = gtk_tree_view_leave_notify;
  widget_class->focus_in_event = gtk_tree_view_focus_in;
  widget_class->focus_out_event = gtk_tree_view_focus_out;
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  widget_class->drag_begin = gtk_tree_view_drag_begin;
  widget_class->drag_end = gtk_tree_view_drag_end;
  widget_class->drag_data_get = gtk_tree_view_drag_data_get;
  widget_class->drag_data_delete = gtk_tree_view_drag_data_delete;
  widget_class->drag_leave = gtk_tree_view_drag_leave;
  widget_class->drag_motion = gtk_tree_view_drag_motion;
  widget_class->drag_drop = gtk_tree_view_drag_drop;
  widget_class->drag_data_received = gtk_tree_view_drag_data_received;
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  /* GtkContainer signals */
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  container_class->remove = gtk_tree_view_remove;
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  container_class->forall = gtk_tree_view_forall;
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  container_class->focus = gtk_tree_view_focus;
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  container_class->set_focus_child = gtk_tree_view_set_focus_child;
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  class->set_scroll_adjustments = gtk_tree_view_set_adjustments;
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  class->move_cursor = gtk_tree_view_real_move_cursor;
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  class->set_anchor = gtk_tree_view_real_set_anchor;
  class->toggle_cursor_row = gtk_tree_view_real_toggle_cursor_row;
  class->expand_collapse_cursor_row = gtk_tree_view_real_expand_collapse_cursor_row;
  class->select_cursor_parent = gtk_tree_view_real_select_cursor_parent;

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  /* Properties */
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  g_object_class_install_property (o_class,
                                   PROP_MODEL,
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                                   g_param_spec_object ("model",
							_("TreeView Model"),
							_("The model for the tree view"),
							GTK_TYPE_TREE_MODEL,
							G_PARAM_READWRITE));
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  g_object_class_install_property (o_class,
                                   PROP_HADJUSTMENT,
                                   g_param_spec_object ("hadjustment",
							_("Horizontal Adjustment"),
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                                                        _("Horizontal Adjustment for the widget"),
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                                                        GTK_TYPE_ADJUSTMENT,
                                                        G_PARAM_READWRITE));

  g_object_class_install_property (o_class,
                                   PROP_VADJUSTMENT,
                                   g_param_spec_object ("vadjustment",
							_("Vertical Adjustment"),
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                                                        _("Vertical Adjustment for the widget"),
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                                                        GTK_TYPE_ADJUSTMENT,
                                                        G_PARAM_READWRITE));

  g_object_class_install_property (o_class,
                                   PROP_HEADERS_VISIBLE,
                                   g_param_spec_boolean ("headers_visible",
							 _("Visible"),
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							 _("Show the column header buttons"),
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							 FALSE,
							 G_PARAM_READWRITE));

  g_object_class_install_property (o_class,
                                   PROP_HEADERS_CLICKABLE,
                                   g_param_spec_boolean ("headers_clickable",
							 _("Headers Clickable"),
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							 _("Column headers respond to click events"),
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							 FALSE,
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							 G_PARAM_WRITABLE));
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  g_object_class_install_property (o_class,
                                   PROP_EXPANDER_COLUMN,
                                   g_param_spec_uint ("expander_column",
						      _("Expand Column"),
						      _("Set the column number for the expander column"),
						      0,
						      G_MAXINT,
						      0,
						      G_PARAM_READWRITE));

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  g_object_class_install_property (o_class,
                                   PROP_REORDERABLE,
                                   g_param_spec_boolean ("reorderable",
							 _("Reorderable"),
							 _("View is reorderable"),
							 FALSE,
							 G_PARAM_READWRITE));

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  g_object_class_install_property (o_class,
                                   PROP_RULES_HINT,
                                   g_param_spec_boolean ("rules_hint",
							 _("Rules Hint"),
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							 _("Set a hint to the theme engine to draw rows in alternating colors"),
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							 FALSE,
							 G_PARAM_READWRITE));

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  /* Style properties */
  /* the width of the column resize windows */
#define _TREE_VIEW_EXPANDER_WIDTH 14
#define _TREE_VIEW_EXPANDER_HEIGHT 14
#define _TREE_VIEW_VERTICAL_SEPARATOR 2
#define _TREE_VIEW_HORIZONTAL_SEPARATOR 0

  gtk_widget_class_install_style_property (widget_class,
					   g_param_spec_int ("expander_width",
							     _("Expander Width"),
							     _("Width of the expander arrow"),
							     0,
							     G_MAXINT,
							     _TREE_VIEW_EXPANDER_WIDTH,
							     G_PARAM_READABLE));

  gtk_widget_class_install_style_property (widget_class,
					   g_param_spec_int ("expander_height",
							     _("Expander Height"),
							     _("Height of the expander arrow"),
							     4,
							     G_MAXINT,
							     _TREE_VIEW_EXPANDER_HEIGHT,
							     G_PARAM_READABLE));

    gtk_widget_class_install_style_property (widget_class,
					   g_param_spec_int ("vertical_separator",
							     _("Vertical Separator Width"),
							     _("Vertical space between cells"),
							     0,
							     G_MAXINT,
							     _TREE_VIEW_VERTICAL_SEPARATOR,
							     G_PARAM_READABLE));

    gtk_widget_class_install_style_property (widget_class,
					   g_param_spec_int ("horizontal_separator",
							     _("Horizontal Separator Width"),
							     _("Horizontal space between cells"),
							     0,
							     G_MAXINT,
							     _TREE_VIEW_HORIZONTAL_SEPARATOR,
							     G_PARAM_READABLE));

  /* Signals */
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  widget_class->set_scroll_adjustments_signal =
    gtk_signal_new ("set_scroll_adjustments",
		    GTK_RUN_LAST,
		    GTK_CLASS_TYPE (object_class),
		    GTK_SIGNAL_OFFSET (GtkTreeViewClass, set_scroll_adjustments),
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		    gtk_marshal_VOID__OBJECT_OBJECT,
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		    GTK_TYPE_NONE, 2,
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		    GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT);
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  tree_view_signals[ROW_ACTIVATED] =
    gtk_signal_new ("row_activated",
		    GTK_RUN_LAST | GTK_RUN_ACTION,
		    GTK_CLASS_TYPE (object_class),
		    GTK_SIGNAL_OFFSET (GtkTreeViewClass, row_activated),
		    gtk_marshal_VOID__BOXED_OBJECT,
		    GTK_TYPE_NONE, 2,
		    GTK_TYPE_TREE_PATH,
		    GTK_TYPE_TREE_VIEW_COLUMN);
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  tree_view_signals[EXPAND_ROW] =
    g_signal_newc ("expand_row",
		   G_TYPE_FROM_CLASS (object_class),
		   G_SIGNAL_RUN_LAST,
		   G_STRUCT_OFFSET (GtkTreeViewClass, expand_row),
		   _gtk_boolean_handled_accumulator, NULL,
		    gtk_marshal_BOOLEAN__BOXED_BOXED,
		   G_TYPE_BOOLEAN, 2,
		   GTK_TYPE_TREE_ITER,
		   GTK_TYPE_TREE_PATH);
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  tree_view_signals[COLLAPSE_ROW] =
    g_signal_newc ("collapse_row",
		   G_TYPE_FROM_CLASS (object_class),
		   G_SIGNAL_RUN_LAST,
		   G_STRUCT_OFFSET (GtkTreeViewClass, collapse_row),
		   _gtk_boolean_handled_accumulator, NULL,
		    gtk_marshal_BOOLEAN__BOXED_BOXED,
		   G_TYPE_BOOLEAN, 2,
		   GTK_TYPE_TREE_ITER,
		   GTK_TYPE_TREE_PATH);
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  tree_view_signals[COLUMNS_CHANGED] =
    g_signal_newc ("columns_changed",
		   G_TYPE_FROM_CLASS (object_class),
		   G_SIGNAL_RUN_LAST,
		   G_STRUCT_OFFSET (GtkTreeViewClass, columns_changed),
		   NULL, NULL,
		   gtk_marshal_NONE__NONE,
		   G_TYPE_NONE, 0);

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  tree_view_signals[MOVE_CURSOR] =
    g_signal_newc ("move_cursor",
		   G_TYPE_FROM_CLASS (object_class),
 		   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
		   G_STRUCT_OFFSET (GtkTreeViewClass, move_cursor),
		   NULL, NULL,
		   gtk_marshal_VOID__ENUM_INT_BOOLEAN,
		   GTK_TYPE_NONE, 3, GTK_TYPE_MOVEMENT_STEP, GTK_TYPE_INT, GTK_TYPE_BOOL);
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  tree_view_signals[TOGGLE_CURSOR_ROW] =
    g_signal_newc ("toggle_cursor_row",
		   G_TYPE_FROM_CLASS (object_class),
 		   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
		   G_STRUCT_OFFSET (GtkTreeViewClass, toggle_cursor_row),
		   NULL, NULL,
		   gtk_marshal_NONE__NONE,
		   GTK_TYPE_NONE, 0);
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  tree_view_signals[EXPAND_COLLAPSE_CURSOR_ROW] =
    g_signal_newc ("expand_collapse_cursor_row",
		   G_TYPE_FROM_CLASS (object_class),
 		   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
		   G_STRUCT_OFFSET (GtkTreeViewClass, expand_collapse_cursor_row),
		   NULL, NULL,
		   gtk_marshal_VOID__BOOLEAN_BOOLEAN_BOOLEAN,
		   GTK_TYPE_NONE, 3, GTK_TYPE_BOOL, GTK_TYPE_BOOL, GTK_TYPE_BOOL);
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  tree_view_signals[SELECT_CURSOR_PARENT] =
    g_signal_newc ("select_cursor_parent",
		   G_TYPE_FROM_CLASS (object_class),
 		   G_SIGNAL_RUN_LAST | GTK_RUN_ACTION,
		   G_STRUCT_OFFSET (GtkTreeViewClass, select_cursor_parent),
		   NULL, NULL,
		   gtk_marshal_NONE__NONE,
		   GTK_TYPE_NONE, 0);
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  /* Key bindings */
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  gtk_tree_view_add_move_binding (binding_set, GDK_Up, 0,
				  GTK_MOVEMENT_DISPLAY_LINES, -1);

  gtk_tree_view_add_move_binding (binding_set, GDK_Down, 0,
				  GTK_MOVEMENT_DISPLAY_LINES, 1);

  gtk_tree_view_add_move_binding (binding_set, GDK_p, GDK_CONTROL_MASK,
				  GTK_MOVEMENT_DISPLAY_LINES, -1);

  gtk_tree_view_add_move_binding (binding_set, GDK_n, GDK_CONTROL_MASK,
				  GTK_MOVEMENT_DISPLAY_LINES, 1);

  gtk_tree_view_add_move_binding (binding_set, GDK_Home, 0,
				  GTK_MOVEMENT_BUFFER_ENDS, -1);

  gtk_tree_view_add_move_binding (binding_set, GDK_End, 0,
				  GTK_MOVEMENT_BUFFER_ENDS, 1);

  gtk_tree_view_add_move_binding (binding_set, GDK_Page_Up, 0,
				  GTK_MOVEMENT_PAGES, -1);

  gtk_tree_view_add_move_binding (binding_set, GDK_Page_Down, 0,
				  GTK_MOVEMENT_PAGES, 1);
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  gtk_binding_entry_add_signal (binding_set, GDK_Right, 0, "move_cursor", 3,
				GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
				GTK_TYPE_INT, 1,
				GTK_TYPE_BOOL, FALSE);

  gtk_binding_entry_add_signal (binding_set, GDK_Left, 0, "move_cursor", 3,
				GTK_TYPE_ENUM, GTK_MOVEMENT_VISUAL_POSITIONS,
				GTK_TYPE_INT, -1,
				GTK_TYPE_BOOL, FALSE);

  gtk_binding_entry_add_signal (binding_set, GDK_f, GDK_CONTROL_MASK, "move_cursor", 3,
				GTK_TYPE_ENUM, GTK_MOVEMENT_LOGICAL_POSITIONS,
				GTK_TYPE_INT, 1,
				GTK_TYPE_BOOL, FALSE);

  gtk_binding_entry_add_signal (binding_set, GDK_b, GDK_CONTROL_MASK, "move_cursor", 3,
				GTK_TYPE_ENUM, GTK_MOVEMENT_LOGICAL_POSITIONS,
				GTK_TYPE_INT, -1,
				GTK_TYPE_BOOL, FALSE);

  gtk_binding_entry_add_signal (binding_set, GDK_space, GDK_CONTROL_MASK, "toggle_cursor_row", 0);

  /* expand and collapse rows */
  gtk_binding_entry_add_signal (binding_set, GDK_plus, 0, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, FALSE);
  /* Not doable on US keyboards */
  gtk_binding_entry_add_signal (binding_set, GDK_plus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, 0, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, FALSE);
  gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_KP_Add, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_Right, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, TRUE,
				GTK_TYPE_BOOL, TRUE);

  gtk_binding_entry_add_signal (binding_set, GDK_minus, 0, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE);
  gtk_binding_entry_add_signal (binding_set, GDK_minus, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, 0, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE);
  gtk_binding_entry_add_signal (binding_set, GDK_KP_Subtract, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE);
  gtk_binding_entry_add_signal (binding_set, GDK_Left, GDK_SHIFT_MASK, "expand_collapse_cursor_row", 3,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, FALSE,
				GTK_TYPE_BOOL, TRUE);

  gtk_binding_entry_add_signal (binding_set, GDK_BackSpace, 0, "select_cursor_parent", 0);

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}

static void
gtk_tree_view_init (GtkTreeView *tree_view)
{
  tree_view->priv = g_new0 (GtkTreeViewPrivate, 1);

  GTK_WIDGET_SET_FLAGS (tree_view, GTK_CAN_FOCUS);

  tree_view->priv->flags = GTK_TREE_VIEW_IS_LIST | GTK_TREE_VIEW_SHOW_EXPANDERS | GTK_TREE_VIEW_DRAW_KEYFOCUS | GTK_TREE_VIEW_HEADERS_VISIBLE;
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  gtk_widget_style_get (GTK_WIDGET (tree_view), "expander_width", &tree_view->priv->tab_offset, NULL);
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  tree_view->priv->n_columns = 0;
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  tree_view->priv->header_height = 1;
  tree_view->priv->x_drag = 0;
  tree_view->priv->drag_pos = -1;
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  tree_view->priv->header_has_focus = FALSE;
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  tree_view->priv->pressed_button = -1;
  tree_view->priv->press_start_x = -1;
  tree_view->priv->press_start_y = -1;
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  tree_view->priv->reorderable = FALSE;
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  gtk_tree_view_set_adjustments (tree_view, NULL, NULL);
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  _gtk_tree_view_update_size (tree_view);
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}

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/* GObject Methods
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 */

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static void
gtk_tree_view_set_property (GObject         *object,
			    guint            prop_id,
			    const GValue    *value,
			    GParamSpec      *pspec)
{
  GtkTreeView *tree_view;

  tree_view = GTK_TREE_VIEW (object);

  switch (prop_id)
    {
    case PROP_MODEL:
      gtk_tree_view_set_model (tree_view, GTK_TREE_MODEL (g_value_get_object (value)));
      break;
    case PROP_HADJUSTMENT:
      gtk_tree_view_set_hadjustment (tree_view, GTK_ADJUSTMENT (g_value_get_object (value)));
      break;
    case PROP_VADJUSTMENT:
      gtk_tree_view_set_vadjustment (tree_view, GTK_ADJUSTMENT (g_value_get_object (value)));
      break;
    case PROP_HEADERS_VISIBLE:
      gtk_tree_view_set_headers_visible (tree_view, g_value_get_boolean (value));
      break;
    case PROP_HEADERS_CLICKABLE:
      gtk_tree_view_set_headers_clickable (tree_view, g_value_get_boolean (value));
      break;
    case PROP_EXPANDER_COLUMN:
      gtk_tree_view_set_expander_column (tree_view, g_value_get_uint (value));
      break;
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    case PROP_REORDERABLE:
      gtk_tree_view_set_reorderable (tree_view, g_value_get_boolean (value));
      break;
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    case PROP_RULES_HINT:
      gtk_tree_view_set_rules_hint (tree_view, g_value_get_boolean (value));
      break;
    default:
      break;
    }
}

static void
gtk_tree_view_get_property (GObject         *object,
			    guint            prop_id,
			    GValue          *value,
			    GParamSpec      *pspec)
{
  GtkTreeView *tree_view;

  tree_view = GTK_TREE_VIEW (object);

  switch (prop_id)
    {
    case PROP_MODEL:
      g_value_set_object (value, G_OBJECT (tree_view->priv->model));
      break;
    case PROP_HADJUSTMENT:
      g_value_set_object (value, G_OBJECT (tree_view->priv->hadjustment));
      break;
    case PROP_VADJUSTMENT:
      g_value_set_object (value, G_OBJECT (tree_view->priv->vadjustment));
      break;
    case PROP_HEADERS_VISIBLE:
      g_value_set_boolean (value, gtk_tree_view_get_headers_visible (tree_view));
      break;
    case PROP_EXPANDER_COLUMN:
      g_value_set_uint (value, tree_view->priv->expander_column);
      break;
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    case PROP_REORDERABLE:
      g_value_set_boolean (value, tree_view->priv->reorderable);
      break;
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    case PROP_RULES_HINT:
      g_value_set_boolean (value, tree_view->priv->has_rules);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
    }
}

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static void
gtk_tree_view_finalize (GObject *object)
{
  GtkTreeView *tree_view = (GtkTreeView *) object;

  g_free (tree_view->priv);
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  if (G_OBJECT_CLASS (parent_class)->finalize)
    (* G_OBJECT_CLASS (parent_class)->finalize) (object);
}

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/* GtkObject Methods
 */

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static void
gtk_tree_view_destroy (GtkObject *object)
{
  GtkTreeView *tree_view = (GtkTreeView *) object;
  GList *list;


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  if (tree_view->priv->tree != NULL)
    {
      gtk_tree_view_unref_tree (tree_view, tree_view->priv->tree);
      _gtk_rbtree_free (tree_view->priv->tree);
      tree_view->priv->tree = NULL;
    }

  if (tree_view->priv->model != NULL)
    {
      g_object_unref (G_OBJECT (tree_view->priv->model));
      tree_view->priv->model = NULL;
    }

  if (tree_view->priv->columns != NULL)
    {
      for (list = tree_view->priv->columns; list; list = list->next)
	g_object_unref (G_OBJECT (list->data));
      g_list_free (tree_view->priv->columns);
      tree_view->priv->columns = NULL;
    }

  if (tree_view->priv->selection != NULL)
    {
      _gtk_tree_selection_set_tree_view (tree_view->priv->selection, NULL);
      g_object_unref (tree_view->priv->selection);
      tree_view->priv->selection = NULL;
    }
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  if (tree_view->priv->anchor != NULL)
    {
      gtk_tree_row_reference_free (tree_view->priv->anchor);
      tree_view->priv->anchor = NULL;
    }

  if (tree_view->priv->scroll_to_path != NULL)
    {
      gtk_tree_path_free (tree_view->priv->scroll_to_path);
      tree_view->priv->scroll_to_path = NULL;
    }

  if (tree_view->priv->drag_dest_row != NULL)
    {
      gtk_tree_row_reference_free (tree_view->priv->drag_dest_row);
      tree_view->priv->drag_dest_row = NULL;
    }

  if (tree_view->priv->cursor)
    {
      gtk_tree_row_reference_free (tree_view->priv->cursor);
      tree_view->priv->cursor = NULL;
    }

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  if (tree_view->priv->column_drop_func_data &&
      tree_view->priv->column_drop_func_data_destroy)
    {
      (* tree_view->priv->column_drop_func_data_destroy) (tree_view->priv->column_drop_func_data);
      tree_view->priv->column_drop_func_data = NULL;
    }

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  if (GTK_OBJECT_CLASS (parent_class)->destroy)
    (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
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}

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/* GtkWidget Methods
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 */

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/* GtkWidget::map helper */
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static void
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gtk_tree_view_map_buttons (GtkTreeView *tree_view)
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{
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  GList *list;
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  g_return_if_fail (GTK_WIDGET_MAPPED (tree_view));
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  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_HEADERS_VISIBLE))
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    {
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      GtkTreeViewColumn *column;

      for (list = tree_view->priv->columns; list; list = list->next)
	{
	  column = list->data;
          if (GTK_WIDGET_VISIBLE (column->button) &&
              !GTK_WIDGET_MAPPED (column->button))
            gtk_widget_map (column->button);
	}
      for (list = tree_view->priv->columns; list; list = list->next)
	{
	  column = list->data;
	  if (column->visible == FALSE)
	    continue;
	  if (column->column_type == GTK_TREE_VIEW_COLUMN_RESIZEABLE)
	    {
	      gdk_window_raise (column->window);
	      gdk_window_show (column->window);
	    }
	  else
	    gdk_window_hide (column->window);
	}
      gdk_window_show (tree_view->priv->header_window);
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    }
}

static void
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gtk_tree_view_map (GtkWidget *widget)
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{
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  GList *tmp_list;
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  GtkTreeView *tree_view;

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  g_return_if_fail (GTK_IS_TREE_VIEW (widget));
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  tree_view = GTK_TREE_VIEW (widget);

  GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);

  tmp_list = tree_view->priv->children;
  while (tmp_list)
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    {
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      GtkTreeViewChild *child = tmp_list->data;
      tmp_list = tmp_list->next;

      if (GTK_WIDGET_VISIBLE (child->widget))
	{
	  if (!GTK_WIDGET_MAPPED (child->widget))
	    gtk_widget_map (child->widget);
	}
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    }
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  gdk_window_show (tree_view->priv->bin_window);
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  gtk_tree_view_map_buttons (tree_view);

  gdk_window_show (widget->window);
}
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static void
gtk_tree_view_realize (GtkWidget *widget)
{
  GList *tmp_list;
  GtkTreeView *tree_view;
  GdkGCValues values;
  GdkWindowAttr attributes;
  gint attributes_mask;

  g_return_if_fail (widget != NULL);
  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

  gtk_tree_view_check_dirty (GTK_TREE_VIEW (widget));
  GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);

  /* Make the main, clipping window */
  attributes.window_type = GDK_WINDOW_CHILD;
  attributes.x = widget->allocation.x;
  attributes.y = widget->allocation.y;
  attributes.width = widget->allocation.width;
  attributes.height = widget->allocation.height;
  attributes.wclass = GDK_INPUT_OUTPUT;
  attributes.visual = gtk_widget_get_visual (widget);
  attributes.colormap = gtk_widget_get_colormap (widget);
  attributes.event_mask = GDK_VISIBILITY_NOTIFY_MASK;

  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;

  widget->window = gdk_window_new (gtk_widget_get_parent_window (widget),
				   &attributes, attributes_mask);
  gdk_window_set_user_data (widget->window, widget);

  /* Make the window for the tree */
  attributes.x = 0;
  attributes.y = 0;
  attributes.width = tree_view->priv->width;
  attributes.height = tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view);
  attributes.event_mask = GDK_EXPOSURE_MASK |
    GDK_SCROLL_MASK |
    GDK_POINTER_MOTION_MASK |
    GDK_ENTER_NOTIFY_MASK |
    GDK_LEAVE_NOTIFY_MASK |
    GDK_BUTTON_PRESS_MASK |
    GDK_BUTTON_RELEASE_MASK |
    gtk_widget_get_events (widget);

  tree_view->priv->bin_window = gdk_window_new (widget->window,
						&attributes, attributes_mask);
  gdk_window_set_user_data (tree_view->priv->bin_window, widget);

  /* Make the column header window */
  attributes.x = 0;
  attributes.y = 0;
  attributes.width = MAX (tree_view->priv->width, widget->allocation.width);
  attributes.height = tree_view->priv->header_height;
  attributes.event_mask = (GDK_EXPOSURE_MASK |
			   GDK_SCROLL_MASK |
			   GDK_BUTTON_PRESS_MASK |
			   GDK_BUTTON_RELEASE_MASK |
			   GDK_KEY_PRESS_MASK |
			   GDK_KEY_RELEASE_MASK) |
    gtk_widget_get_events (widget);

  tree_view->priv->header_window = gdk_window_new (widget->window,
						   &attributes, attributes_mask);
  gdk_window_set_user_data (tree_view->priv->header_window, widget);


  values.foreground = (widget->style->white.pixel==0 ?
		       widget->style->black:widget->style->white);
  values.function = GDK_XOR;
  values.subwindow_mode = GDK_INCLUDE_INFERIORS;
  tree_view->priv->xor_gc = gdk_gc_new_with_values (widget->window,
						    &values,
						    GDK_GC_FOREGROUND |
						    GDK_GC_FUNCTION |
						    GDK_GC_SUBWINDOW);
  /* Add them all up. */
  widget->style = gtk_style_attach (widget->style, widget->window);
  gdk_window_set_background (widget->window, &widget->style->base[widget->state]);
  gdk_window_set_background (tree_view->priv->bin_window, &widget->style->base[widget->state]);
  gtk_style_set_background (widget->style, tree_view->priv->header_window, GTK_STATE_NORMAL);

  tmp_list = tree_view->priv->children;
  while (tmp_list)
    {
      GtkTreeViewChild *child = tmp_list->data;
      tmp_list = tmp_list->next;

      gtk_widget_set_parent_window (child->widget, tree_view->priv->bin_window);
    }
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  for (tmp_list = tree_view->priv->columns; tmp_list; tmp_list = tmp_list->next)
    _gtk_tree_view_column_realize_button (GTK_TREE_VIEW_COLUMN (tmp_list->data));

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  _gtk_tree_view_update_size (GTK_TREE_VIEW (widget));
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  if (tree_view->priv->scroll_to_path != NULL ||
      tree_view->priv->scroll_to_column != NULL)
    {
      gtk_tree_view_scroll_to_cell (tree_view,
				    tree_view->priv->scroll_to_path,
				    tree_view->priv->scroll_to_column,
				    tree_view->priv->scroll_to_row_align,
				    tree_view->priv->scroll_to_col_align);
      if (tree_view->priv->scroll_to_path)
	{
	  gtk_tree_path_free (tree_view->priv->scroll_to_path);
	  tree_view->priv->scroll_to_path = NULL;
	}
      tree_view->priv->scroll_to_column = NULL;
    }
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}

static void
gtk_tree_view_unrealize (GtkWidget *widget)
{
  GtkTreeView *tree_view;
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  GList *list;
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  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

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  if (tree_view->priv->scroll_timeout != 0)
    {
      gtk_timeout_remove (tree_view->priv->scroll_timeout);
      tree_view->priv->scroll_timeout = 0;
    }

  if (tree_view->priv->open_dest_timeout != 0)
    {
      gtk_timeout_remove (tree_view->priv->open_dest_timeout);
      tree_view->priv->open_dest_timeout = 0;
    }
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  for (list = tree_view->priv->columns; list; list = list->next)
    _gtk_tree_view_column_unrealize_button (GTK_TREE_VIEW_COLUMN (list->data));

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  gdk_window_set_user_data (tree_view->priv->bin_window, NULL);
  gdk_window_destroy (tree_view->priv->bin_window);
  tree_view->priv->bin_window = NULL;

  gdk_window_set_user_data (tree_view->priv->header_window, NULL);
  gdk_window_destroy (tree_view->priv->header_window);
  tree_view->priv->header_window = NULL;

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  if (tree_view->priv->drag_window)
    {
      gdk_window_set_user_data (tree_view->priv->drag_window, NULL);
      gdk_window_destroy (tree_view->priv->drag_window);
      tree_view->priv->drag_window = NULL;
    }

  if (tree_view->priv->drag_highlight_window)
    {
      gdk_window_set_user_data (tree_view->priv->drag_highlight_window, NULL);
      gdk_window_destroy (tree_view->priv->drag_highlight_window);
      tree_view->priv->drag_highlight_window = NULL;
    }

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  if (tree_view->priv->cursor_drag)
    {
      gdk_cursor_destroy (tree_view->priv->cursor_drag);
      tree_view->priv->cursor_drag = NULL;
    }
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  if (tree_view->priv->xor_gc)
    {
      gdk_gc_destroy (tree_view->priv->xor_gc);
      tree_view->priv->xor_gc = NULL;
    }
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  /* GtkWidget::unrealize destroys children and widget->window */
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  if (GTK_WIDGET_CLASS (parent_class)->unrealize)
    (* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}

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/* GtkWidget::size_request helper */
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static void
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gtk_tree_view_size_request_buttons (GtkTreeView *tree_view)
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{
  GList *list;

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  tree_view->priv->header_height = 1;
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  if (GTK_TREE_VIEW_FLAG_SET (tree_view, GTK_TREE_VIEW_MODEL_SETUP))
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    {
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      for (list = tree_view->priv->columns; list; list = list->next)
        {
          GtkRequisition requisition;
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          GtkTreeViewColumn *column = list->data;

	  if (column->button == NULL)
	    continue;
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          column = list->data;
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          gtk_widget_size_request (column->button, &requisition);
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          _gtk_tree_view_column_set_width (column, MAX (column->width, requisition.width));
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          tree_view->priv->header_height = MAX (tree_view->priv->header_height, requisition.height);
        }
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    }
}

static void
gtk_tree_view_size_request (GtkWidget      *widget,
			    GtkRequisition *requisition)
{
  GtkTreeView *tree_view;
  GList *tmp_list;

  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  tree_view = GTK_TREE_VIEW (widget);

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  requisition->width = tree_view->priv->width;
  requisition->height = tree_view->priv->height + tree_view->priv->header_height;
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  tmp_list = tree_view->priv->children;

  while (tmp_list)
    {
      GtkTreeViewChild *child = tmp_list->data;
      GtkRequisition child_requisition;

      tmp_list = tmp_list->next;

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      if (GTK_WIDGET_VISIBLE (child->widget))
        gtk_widget_size_request (child->widget, &child_requisition);
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    }
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  gtk_tree_view_size_request_buttons (tree_view);
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}

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/* GtkWidget::size_allocate helper */
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static void
gtk_tree_view_size_allocate_buttons (GtkWidget *widget)
{
  GtkTreeView *tree_view;
  GList *list;
  GtkTreeViewColumn *column;
  GtkAllocation allocation;
  gint width = 0;
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  tree_view = GTK_TREE_VIEW (widget);

  allocation.y = 0;
  allocation.height = tree_view->priv->header_height;

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  for (list = tree_view->priv->columns; list != NULL; list = list->next)
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    {
      column = list->data;

      if (!column->visible)
	continue;

      allocation.x = width;
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      allocation.width = column->displayed_width;
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      width += column->width;
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      gtk_widget_size_allocate (column->button, &allocation);

      if (column->window)
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	gdk_window_move_resize (column->window,
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                                allocation.x + allocation.width - TREE_VIEW_DRAG_WIDTH/2,
				allocation.y,
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                                TREE_VIEW_DRAG_WIDTH, allocation.height);
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    }
}

static void
gtk_tree_view_size_allocate (GtkWidget     *widget,
			     GtkAllocation *allocation)
{
  GList *tmp_list;
  GtkTreeView *tree_view;

  g_return_if_fail (GTK_IS_TREE_VIEW (widget));

  widget->allocation = *allocation;

  tree_view = GTK_TREE_VIEW (widget);
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  gtk_tree_view_check_dirty (tree_view);
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  tmp_list = tree_view->priv->children;

  while (tmp_list)
    {
      GtkAllocation allocation;
      GtkRequisition requisition;

      GtkTreeViewChild *child = tmp_list->data;
      tmp_list = tmp_list->next;

      allocation.x = child->x;
      allocation.y = child->y;
      gtk_widget_get_child_requisition (child->widget, &requisition);
      allocation.width = requisition.width;
      allocation.height = requisition.height;

      gtk_widget_size_allocate (child->widget, &allocation);
    }

  if (GTK_WIDGET_REALIZED (widget))
    {
      gdk_window_move_resize (widget->window,
			      allocation->x, allocation->y,
			      allocation->width, allocation->height);
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      gdk_window_resize (tree_view->priv->header_window,
			 MAX (tree_view->priv->width, allocation->width),
			 tree_view->priv->header_height);
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      if (tree_view->priv->width < allocation->width)
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	  gdk_window_resize (tree_view->priv->bin_window,
			     allocation->width,
			     tree_view->priv->height + TREE_VIEW_HEADER_HEIGHT (tree_view));
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      _gtk_tree_view_update_col_width (tree_view);
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    }
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  gtk_tree_view_size_allocate_buttons (widget);

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  tree_view->priv->hadjustment->page_size = allocation->width;
  tree_view->priv->hadjustment->page_increment = allocation->width / 2;
  tree_view->priv->hadjustment->lower = 0;
  tree_view->priv->hadjustment->upper = tree_view