protected boolean toggleNode(CheckedTreeNode node) {
boolean checked = !node.isChecked();
checkNode(node, checked);
// notify model listeners about model change
final TreeModel model = getTree().getModel();
model.valueForPathChanged(new TreePath(node.getPath()), node.getUserObject());
return checked;
}
public void valueForPathChanged(TreePath path, Object newValue) {
model.valueForPathChanged(path, newValue);
}