public static Object extractUserObject(DefaultMutableTreeNode node) {
Object userObject = node.getUserObject();
Object element = null;
if (userObject instanceof AbstractTreeNode) {
AbstractTreeNode descriptor = (AbstractTreeNode) userObject;
element = descriptor.getValue();
} else if (userObject instanceof NodeDescriptor) {
NodeDescriptor descriptor = (NodeDescriptor) userObject;
element = descriptor.getElement();
if (element instanceof AbstractTreeNode) {
element = ((AbstractTreeNode) element).getValue();
}
} else if (userObject != null) {
element = userObject;
}
return element;
}
private static String getDescriptorKey(final NodeDescriptor nodeDescriptor) {
if (nodeDescriptor instanceof AbstractTreeNode) {
Object value;
if (nodeDescriptor instanceof NodeDescriptorProvidingKey) {
value = ((NodeDescriptorProvidingKey) nodeDescriptor).getKey();
} else {
value = ((AbstractTreeNode) nodeDescriptor).getValue();
}
if (value instanceof NavigationItem) {
try {
final String name = ((NavigationItem) value).getName();
return name != null ? name : value.toString();
} catch (Exception e) {
// ignore for invalid psi element
}
}
}
return nodeDescriptor.toString();
}
private static String getDescriptorType(final NodeDescriptor nodeDescriptor) {
return nodeDescriptor.getClass().getName();
}