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/* gtktreednd.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, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GTK_TREE_DND_H__
#define __GTK_TREE_DND_H__
#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif
#include <gtk/gtktreemodel.h>
G_BEGIN_DECLS
/**
* GTK_TYPE_TREE_ROW_DATA:
* Magic `GType` to use when dragging rows in a `GtkTreeModel`.
*
* Data in this format will be provided by gtk_tree_create_row_drag_content()
* and can be consumed via gtk_tree_get_row_drag_data().
*/
#define GTK_TYPE_TREE_ROW_DATA (gtk_tree_row_data_get_type ())
GDK_AVAILABLE_IN_ALL
GType gtk_tree_row_data_get_type (void) G_GNUC_CONST;
#define GTK_TYPE_TREE_DRAG_SOURCE (gtk_tree_drag_source_get_type ())
#define GTK_TREE_DRAG_SOURCE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TREE_DRAG_SOURCE, GtkTreeDragSource))
#define GTK_IS_TREE_DRAG_SOURCE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TREE_DRAG_SOURCE))
#define GTK_TREE_DRAG_SOURCE_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GTK_TYPE_TREE_DRAG_SOURCE, GtkTreeDragSourceIface))
typedef struct _GtkTreeDragSource GtkTreeDragSource; /* Dummy typedef */
typedef struct _GtkTreeDragSourceIface GtkTreeDragSourceIface;
/**
* GtkTreeDragSourceIface:
* @row_draggable: Asks the `GtkTreeDragSource` whether a particular
* row can be used as the source of a DND operation.
* @drag_data_get: Asks the `GtkTreeDragSource` to fill in
* selection_data with a representation of the row at path.
* @drag_data_delete: Asks the `GtkTreeDragSource` to delete the row at
* path, because it was moved somewhere else via drag-and-drop.
*/
struct _GtkTreeDragSourceIface
{
/*< private >*/
GTypeInterface g_iface;
/*< public >*/
/* VTable - not signals */
gboolean (* row_draggable) (GtkTreeDragSource *drag_source,
GtkTreePath *path);
GdkContentProvider * (* drag_data_get)(GtkTreeDragSource *drag_source,
GtkTreePath *path);
gboolean (* drag_data_delete) (GtkTreeDragSource *drag_source,
GtkTreePath *path);
};
GDK_AVAILABLE_IN_ALL
GType gtk_tree_drag_source_get_type (void) G_GNUC_CONST;
/* Returns whether the given row can be dragged */
GDK_AVAILABLE_IN_ALL
gboolean gtk_tree_drag_source_row_draggable (GtkTreeDragSource *drag_source,
GtkTreePath *path);
/* Deletes the given row, or returns FALSE if it can't */
GDK_AVAILABLE_IN_ALL
gboolean gtk_tree_drag_source_drag_data_delete (GtkTreeDragSource *drag_source,
GtkTreePath *path);
/* Fills in selection_data with type selection_data->target based on
* the row denoted by path, returns TRUE if it does anything
*/
GDK_AVAILABLE_IN_ALL
GdkContentProvider *
gtk_tree_drag_source_drag_data_get (GtkTreeDragSource *drag_source,
GtkTreePath *path);
#define GTK_TYPE_TREE_DRAG_DEST (gtk_tree_drag_dest_get_type ())
#define GTK_TREE_DRAG_DEST(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TREE_DRAG_DEST, GtkTreeDragDest))
#define GTK_IS_TREE_DRAG_DEST(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_TREE_DRAG_DEST))
#define GTK_TREE_DRAG_DEST_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), GTK_TYPE_TREE_DRAG_DEST, GtkTreeDragDestIface))
typedef struct _GtkTreeDragDest GtkTreeDragDest; /* Dummy typedef */
typedef struct _GtkTreeDragDestIface GtkTreeDragDestIface;
/**
* GtkTreeDragDestIface:
* @drag_data_received: Asks the `GtkTreeDragDest` to insert a row
* before the path dest, deriving the contents of the row from
* selection_data.
* @row_drop_possible: Determines whether a drop is possible before
* the given dest_path, at the same depth as dest_path.
*/
struct _GtkTreeDragDestIface
{
/*< private >*/
GTypeInterface g_iface;
/*< public >*/
/* VTable - not signals */
gboolean (* drag_data_received) (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
const GValue *value);
gboolean (* row_drop_possible) (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
const GValue *value);
};
GDK_AVAILABLE_IN_ALL
GType gtk_tree_drag_dest_get_type (void) G_GNUC_CONST;
/* Inserts a row before dest which contains data in selection_data,
* or returns FALSE if it can't
*/
GDK_AVAILABLE_IN_ALL
gboolean gtk_tree_drag_dest_drag_data_received (GtkTreeDragDest *drag_dest,
GtkTreePath *dest,
const GValue *value);
/* Returns TRUE if we can drop before path; path may not exist. */
GDK_AVAILABLE_IN_ALL
gboolean gtk_tree_drag_dest_row_drop_possible (GtkTreeDragDest *drag_dest,
GtkTreePath *dest_path,
const GValue *value);
/* The selection data would normally have target type GTK_TREE_MODEL_ROW in this
* case. If the target is wrong these functions return FALSE.
*/
GDK_AVAILABLE_IN_ALL
GdkContentProvider *
gtk_tree_create_row_drag_content (GtkTreeModel *tree_model,
GtkTreePath *path);
GDK_AVAILABLE_IN_ALL
gboolean gtk_tree_get_row_drag_data (const GValue *value,
GtkTreeModel **tree_model,
GtkTreePath **path);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GtkTreeDragDest, g_object_unref)
G_DEFINE_AUTOPTR_CLEANUP_FUNC(GtkTreeDragSource, g_object_unref)
G_END_DECLS
#endif /* __GTK_TREE_DND_H__ */
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