private void collectExisting(MPSTreeNode node, Collection<String> existing) {
for (int idx = 0; idx < node.getChildCount(); idx++) {
TreeNode child = node.getChildAt(idx);
if (child instanceof MPSTreeNode) {
existing.add(child.toString());
collectExisting(((MPSTreeNode) child), existing);
}
}
}
private void collectNew(
TreePath path, Collection<String> existing, Collection<TreePath> newNodes) {
Object lastPathComponent = path.getLastPathComponent();
if (lastPathComponent instanceof MPSTreeNode) {
MPSTreeNode node = ((MPSTreeNode) lastPathComponent);
for (int idx = 0; idx < node.getChildCount(); idx++) {
TreeNode child = node.getChildAt(idx);
if (child instanceof MPSTreeNode) {
TreePath childPath = path.pathByAddingChild(child);
if (!(existing.contains(child.toString()))) {
newNodes.add(childPath);
}
collectNew(childPath, existing, newNodes);
}
}
}
}