/**
* The itemStateChanged method of the ItemListener interface.
*
* @param event The event which triggered this ItemListener.
*/
public void itemStateChanged(ItemEvent event) {
Object source = event.getItem();
try {
firePickedVertexChangeEvent((V) source, event.getStateChange() == ItemEvent.SELECTED);
} catch (ClassCastException e) {
firePickedEdgeChangeEvent((E) source, event.getStateChange() == ItemEvent.SELECTED);
}
}
