private PackagingElementNode<?> getParentNode(final LayoutTreeSelection selection) {
final PackagingElementNode<?> node = selection.getNodeIfSingle();
if (node != null) {
if (node.getFirstElement() instanceof CompositePackagingElement) {
return node;
}
final PackagingElementNode<?> parent = node.getParentNode();
if (parent != null) {
return parent;
}
}
return myTree.getRootPackagingNode();
}
