@Override
public void addNotify() {
super.addNotify();
if (nodeChangeListener == null) {
nodeChangeListener = new NodeChangeListener();
}
manager.addPropertyChangeListener(nodeChangeListener);
manager.setRootContext(getRootContext());
treeView.expandAll();
}
@Override
public void removeNotify() {
manager.removePropertyChangeListener(nodeChangeListener);
super.removeNotify();
}