@Override
public Object saveState() {
HashMap<String, Object> componentStates = new HashMap<String, Object>();
LinkedList<BasicEditable> lst = new LinkedList<BasicEditable>();
getComponents(lst);
for (BasicEditable bn : lst) componentStates.put(bn.getId(), ((SDFSNode) bn).saveState());
return componentStates;
}
private void recTraceChildren(BasicEditable n, int level) {
for (int i = 0; i < level; i++) System.out.print(' ');
System.out.println(n.getId());
for (BasicEditable cn : n.getChildren()) recTraceChildren(cn, level + 1);
}