protected void SubscribeToEditorState() { FreeEditorListener.SubscribeToStateChange(this); }
protected void SubscribeToEditorUpdate() { FreeEditorListener.SubscribeToUpdate(this); }
protected void UnsubscribeFromEditorUpdate() { FreeEditorListener.UnsubscribeFromUpdate(this); }
protected void UnsubscribeFromEditorState() { FreeEditorListener.UnsubscribeFromStateChange(this); }