/* gtktreesortable.h

 * Copyright (C) 2001  Red Hat, Inc.

 *

 * 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.

 */

#ifndef __GTK_TREE_SORTABLE_H__

#define __GTK_TREE_SORTABLE_H__

#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)

#error "Only <gtk/gtk.h> can be included directly."

#endif

#include <gtk/gtktreemodel.h>

#include <gtk/gtktypeutils.h>

G_BEGIN_DECLS

#define GTK_TYPE_TREE_SORTABLE            (gtk_tree_sortable_get_type ())

#define GTK_TREE_SORTABLE(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TREE_SORTABLE, GtkTreeSortable))

#define GTK_TREE_SORTABLE_CLASS(obj)      (G_TYPE_CHECK_CLASS_CAST ((obj), GTK_TYPE_TREE_SORTABLE, GtkTreeSortableIface))

#define GTK_IS_TREE_SORTABLE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TREE_SORTABLE))

#define GTK_TREE_SORTABLE_GET_IFACE(obj)  (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GTK_TYPE_TREE_SORTABLE, GtkTreeSortableIface))

enum {

  GTK_TREE_SORTABLE_DEFAULT_SORT_COLUMN_ID = -1,

  GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID = -2

};

typedef struct _GtkTreeSortable      GtkTreeSortable; /* Dummy typedef */

typedef struct _GtkTreeSortableIface GtkTreeSortableIface;

typedef gint (* GtkTreeIterCompareFunc) (GtkTreeModel *model,

					 GtkTreeIter  *a,

					 GtkTreeIter  *b,

					 gpointer      user_data);

struct _GtkTreeSortableIface

{

  GTypeInterface g_iface;

  /* signals */

  void     (* sort_column_changed)   (GtkTreeSortable        *sortable);

  /* virtual table */

  gboolean (* get_sort_column_id)    (GtkTreeSortable        *sortable,

				      gint                   *sort_column_id,

				      GtkSortType            *order);

  void     (* set_sort_column_id)    (GtkTreeSortable        *sortable,

				      gint                    sort_column_id,

				      GtkSortType             order);

  void     (* set_sort_func)         (GtkTreeSortable        *sortable,

				      gint                    sort_column_id,

				      GtkTreeIterCompareFunc  func,

				      gpointer                data,

				      GDestroyNotify          destroy);

  void     (* set_default_sort_func) (GtkTreeSortable        *sortable,

				      GtkTreeIterCompareFunc  func,

				      gpointer                data,

				      GDestroyNotify          destroy);

  gboolean (* has_default_sort_func) (GtkTreeSortable        *sortable);

};

GType    gtk_tree_sortable_get_type              (void) G_GNUC_CONST;

void     gtk_tree_sortable_sort_column_changed   (GtkTreeSortable        *sortable);

gboolean gtk_tree_sortable_get_sort_column_id    (GtkTreeSortable        *sortable,

						  gint                   *sort_column_id,

						  GtkSortType            *order);

void     gtk_tree_sortable_set_sort_column_id    (GtkTreeSortable        *sortable,

						  gint                    sort_column_id,

						  GtkSortType             order);

void     gtk_tree_sortable_set_sort_func         (GtkTreeSortable        *sortable,

						  gint                    sort_column_id,

						  GtkTreeIterCompareFunc  sort_func,

						  gpointer                user_data,

						  GDestroyNotify          destroy);

void     gtk_tree_sortable_set_default_sort_func (GtkTreeSortable        *sortable,

						  GtkTreeIterCompareFunc  sort_func,

						  gpointer                user_data,

						  GDestroyNotify          destroy);

gboolean gtk_tree_sortable_has_default_sort_func (GtkTreeSortable        *sortable);

G_END_DECLS

#endif /* __GTK_TREE_SORTABLE_H__ */