addNode method

@override LocalNode? addNode(String path, Map m)

Adds a node at the given path that is initialized with the given data in m.

Implementation

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

  var p = Path(path);
  var oldNode = _getNode(path, allowStubs: true) as SimpleNode?;

  var pnode = getNode(p.parentPath) as SimpleNode?;
  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) as SimpleNode?;
    } else {
      node = getOrCreateNode(path, true, false) as SimpleNode?;
    }
  }

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

    for (var 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;
}