createNodeController method

List<NodeController> createNodeController(NodeController parentController, List<int> indexes)

Create controllers for each child node

Implementation

List<NodeController> createNodeController(
    NodeController parentController, List<int> indexes) {
  List<NodeController> children =
      parentController.childControllers.map((e) => e).toList();
  List<NodeController> newChildren = [];

  indexes.forEach((element) {});

  for (int i in indexes) {
    NodeController? controller;
    NodeController? oldController;
    var lazyItem = TreeNodeItem(
        parent: parentController.treeNode.item, controller: this, index: i);
    parentController.childControllers.forEach((controller) {
      if (controller.treeNode.item == lazyItem.item) {
        oldController = controller;
      }
    });
    if (oldController != null) {
      controller = oldController;
    } else {
      controller = NodeController(
          parent: parentController,
          nodeItem: lazyItem,
          expandCallback: (NodeData? item) {
            bool result = false;
            children.forEach((controller) {
              if (controller.treeNode.item == item) {
                result = true;
              }
            });
            return result;
          });
    }
    newChildren.add(controller!);
  }
  return newChildren;
}