static void
drag_data_get_cb (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTreeView *tree_view;
GtkTreeModel *model;
GList *ref_list;
tree_view = GTK_TREE_VIEW (widget);
model = gtk_tree_view_get_model (tree_view);
g_return_if_fail (model != NULL);
ref_list = g_object_get_data (G_OBJECT (context), "drag-info");
if (ref_list == NULL)
{
return;
}
if (EGG_IS_TREE_MULTI_DRAG_SOURCE (model))
{
egg_tree_multi_drag_source_drag_data_get (EGG_TREE_MULTI_DRAG_SOURCE (model),
ref_list,
selection_data);
}
}
static gboolean
egg_tree_multi_drag_drag_data_get (GtkWidget *widget,
GdkDragContext *context,
GtkSelectionData *selection_data,
guint info,
guint time)
{
GtkTreeView *tree_view;
GtkTreeModel *model;
GList *path_list;
tree_view = GTK_TREE_VIEW (widget);
model = gtk_tree_view_get_model (tree_view);
if (model == NULL)
return FALSE;
path_list = get_context_data (context);
if (path_list == NULL)
return FALSE;
/* We can implement the GTK_TREE_MODEL_ROW target generically for
* any model; for DragSource models there are some other targets
* we also support.
*/
if (! EGG_IS_TREE_MULTI_DRAG_SOURCE (model))
return FALSE;
return egg_tree_multi_drag_source_drag_data_get (EGG_TREE_MULTI_DRAG_SOURCE (model),
context,
selection_data,
path_list);
}
static gboolean
on_drag_data_get( GtkWidget *widget, GdkDragContext *context, GtkSelectionData *selection_data, guint info, guint time )
{
static const gchar *thisfn = "egg_tree_multi_dnd_on_drag_data_get";
GtkTreeView *tree_view;
GtkTreeModel *model;
GList *path_list;
g_debug( "%s: widget=%p, context=%p, selection_data=%p, info=%d, time=%d",
thisfn, ( void * ) widget, ( void * ) context, ( void * ) selection_data, info, time );
tree_view = GTK_TREE_VIEW( widget );
model = gtk_tree_view_get_model( tree_view );
g_assert( model );
g_assert( EGG_IS_TREE_MULTI_DRAG_SOURCE( model ));
path_list = get_treeview_data( widget );
if( path_list == NULL ){
return( FALSE );
}
/* We can implement the GTK_TREE_MODEL_ROW target generically for
* any model; for DragSource models there are some other targets
* we also support.
*/
return( egg_tree_multi_drag_source_drag_data_get(
EGG_TREE_MULTI_DRAG_SOURCE( model ), context, selection_data, path_list, info ));
}
/**
* egg_tree_multi_drag_source_drag_data_delete:
* @drag_source: a #EggTreeMultiDragSource
* @path: row that was being dragged
*
* Asks the #EggTreeMultiDragSource to delete the row at @path, because
* it was moved somewhere else via drag-and-drop. Returns %FALSE
* if the deletion fails because @path no longer exists, or for
* some model-specific reason. Should robustly handle a @path no
* longer found in the model!
*
* Return value: %TRUE if the row was successfully deleted
**/
gboolean
egg_tree_multi_drag_source_drag_data_delete( EggTreeMultiDragSource *drag_source, GList *path_list )
{
EggTreeMultiDragSourceIface *iface = EGG_TREE_MULTI_DRAG_SOURCE_GET_IFACE( drag_source );
g_return_val_if_fail( EGG_IS_TREE_MULTI_DRAG_SOURCE( drag_source ), FALSE );
g_return_val_if_fail( iface->drag_data_delete != NULL, FALSE );
g_return_val_if_fail( path_list != NULL, FALSE );
return(( *iface->drag_data_delete )( drag_source, path_list ));
}
/**
* egg_tree_multi_drag_source_drag_data_get:
* @drag_source: a #EggTreeMultiDragSource
* @path: row that was dragged
* @selection_data: a #EggSelectionData to fill with data from the dragged row
*
* Asks the #EggTreeMultiDragSource to fill in @selection_data with a
* representation of the row at @path. @selection_data->target gives
* the required type of the data. Should robustly handle a @path no
* longer found in the model!
*
* Return value: %TRUE if data of the required type was provided
**/
gboolean
egg_tree_multi_drag_source_drag_data_get (EggTreeMultiDragSource *drag_source,
GList *path_list,
GtkSelectionData *selection_data)
{
EggTreeMultiDragSourceIface *iface = EGG_TREE_MULTI_DRAG_SOURCE_GET_IFACE (drag_source);
g_return_val_if_fail (EGG_IS_TREE_MULTI_DRAG_SOURCE (drag_source), FALSE);
g_return_val_if_fail (iface->drag_data_get != NULL, FALSE);
g_return_val_if_fail (path_list != NULL, FALSE);
g_return_val_if_fail (selection_data != NULL, FALSE);
return (* iface->drag_data_get) (drag_source, path_list, selection_data);
}
static void
brasero_file_chooser_notify_model (GtkTreeView *treeview,
GParamSpec *pspec,
gpointer NULL_data)
{
GtkTreeModel *model;
model = gtk_tree_view_get_model (treeview);
if (model && !EGG_IS_TREE_MULTI_DRAG_SOURCE (model)) {
GType type;
type = G_OBJECT_TYPE (model);
brasero_enable_multi_DND_for_model_type (type);
}
}
/**
* egg_tree_multi_drag_source_row_draggable:
* @drag_source: a #EggTreeMultiDragSource
* @path: row on which user is initiating a drag
*
* Asks the #EggTreeMultiDragSource whether a particular row can be used as
* the source of a DND operation. If the source doesn't implement
* this interface, the row is assumed draggable.
*
* Return value: %TRUE if the row can be dragged
**/
gboolean
egg_tree_multi_drag_source_row_draggable (EggTreeMultiDragSource *drag_source,
GList *path_list)
{
EggTreeMultiDragSourceIface *iface = EGG_TREE_MULTI_DRAG_SOURCE_GET_IFACE (drag_source);
g_return_val_if_fail (EGG_IS_TREE_MULTI_DRAG_SOURCE (drag_source), FALSE);
g_return_val_if_fail (iface->row_draggable != NULL, FALSE);
g_return_val_if_fail (path_list != NULL, FALSE);
if (iface->row_draggable)
return (* iface->row_draggable) (drag_source, path_list);
else
return TRUE;
}
