public interface UndoEventReceiver
This is a marker interface for hooks. If a PermanentNodeHook implements this
interface (which is easy), it receives onUpdateNodeHook,
onUpdateChildrenHook, even when the action issuing this update is caused by an
undo action.
Normally, on undo, no event are generated.
The onAddChild, onAddChildren events are not implemented yet. They are
generated in any case.
- Author:
- foltin