////////////////////////////////////////////////////////////////////////////
/**
* When {@link WidgetInfo} is moved out of its {@link StackPanelInfo}.
*/
private void removeStackText_whenMoveOut() {
addBroadcastListener(new XmlObjectMove() {
@Override
public void before(XmlObjectInfo child, ObjectInfo oldParent, ObjectInfo newParent)
throws Exception {
if (oldParent == StackPanelInfo.this && newParent != oldParent) {
Property property = getStackTextProperty(child);