static GdkDragAction
v_get_drag_actions( EggTreeMultiDragSource *drag_source )
{
EggTreeMultiDragSourceIface *iface = EGG_TREE_MULTI_DRAG_SOURCE_GET_IFACE( drag_source );
if( iface->get_drag_actions ){
return( iface->get_drag_actions( drag_source ));
}
return( 0 );
}
static GtkTargetList *
v_get_target_list( EggTreeMultiDragSource *drag_source )
{
EggTreeMultiDragSourceIface *iface = EGG_TREE_MULTI_DRAG_SOURCE_GET_IFACE( drag_source );
if( iface->get_target_list ){
return( iface->get_target_list( drag_source ));
}
return( NULL );
}
/**
* 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 ));
}
static void
v_free_target_list( EggTreeMultiDragSource *drag_source, GtkTargetList *list )
{
EggTreeMultiDragSourceIface *iface = EGG_TREE_MULTI_DRAG_SOURCE_GET_IFACE( drag_source );
if( iface->free_target_list ){
iface->free_target_list( drag_source, list );
} else {
gtk_target_list_unref( 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);
}
/**
* 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;
}
