method addNode

Source

@override
SimpleNode addNode(String path, Map m) {
  if (path == '/' || !path.startsWith('/')) return null;

  Path p = new Path(path);
  SimpleNode oldNode = _getNode(path, allowStubs: true);

  SimpleNode pnode = getNode(p.parentPath);
  SimpleNode node;

  if (pnode != null) {
    node = pnode.onLoadChild(p.name, m, this);
  }

  if (node == null) {
    String profile = m[r'$is'];
    if (_profiles.containsKey(profile)) {
      node = _profiles[profile](path);
    } else {
      node = getOrCreateNode(path, true, false);
    }
  }

  if (oldNode != null) {
    logger.fine("Found old node for ${path}: Copying subscriptions.");

    for (ValueUpdateCallback func in oldNode.callbacks.keys) {
      node.subscribe(func, oldNode.callbacks[func]);
    }

    if (node is SimpleNode) {
      try {
        node._listChangeController = oldNode._listChangeController;
        node._listChangeController.onStartListen = () {
          node.onStartListListen();
        };
        node._listChangeController.onAllCancel = () {
          node.onAllListCancel();
        };
      } catch (e) {}

      if (node._hasListListener) {
        node.onStartListListen();
      }
    }
  }

  nodes[path] = node;
  node.load(m);
  node.onCreated();

  if (pnode != null) {
    pnode.addChild(p.name, node);
    pnode.onChildAdded(p.name, node);
    pnode.updateList(p.name);
  }

  node.updateList(r"$is");

  if (oldNode != null) {
    oldNode.updateList(r"$is");
  }

  return node;
}