groups[1] = new NodeGroupBar();
groups[2] = new EdgeGroupBar();
groups[3] = new LabelGroupBar();
VizModel model = VizController.getInstance().getVizModel();
model.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getPropertyName().equals("init")) {
VizModel model = VizController.getInstance().getVizModel();
toolbar.setEnable(!model.isDefaultModel());