public class EventHandling extends AbstractCompositeView implements PropertyChangeListener, DOMChangeListener{ 
private JTextArea _textArea; 
protected void defaultBuild() {
setLayout(new BorderLayout());
JComponent visualizer = (JComponent)TypeVisualizerFactory.getInstance().getVisualizer(getModel().getDirectChild("simpleGroup"));
add(visualizer, BorderLayout.NORTH);
visualizer = (JComponent)TypeVisualizerFactory.getInstance().getVisualizer(getModel().getDirectChild("list"));
add(visualizer, BorderLayout.CENTER); 
_textArea = new JTextArea();
JScrollPane scrollPane = new JScrollPane(_textArea);
scrollPane.setPreferredSize(new Dimension(300, 300));
add(scrollPane, BorderLayout.SOUTH); 
getModel().getDOM().getController().addPropertyChangeListener(this);
getModel().getDOM().addDOMChangeListener(this);
}
public void propertyChange(PropertyChangeEvent event) {
super.propertyChange(event);
_textArea.setText(event.toString());
}
public void domChanged(DOMChangeEvent event) {
super.domChanged(event); 
_textArea.setText(event.toString());
}
public void setApplicationRequired(boolean aBoolean) {}
public void setRequired(boolean aBoolean) {}
}