collapse method

void collapse(EasyTreeNode<E> node)

关闭 node

Implementation

void collapse(EasyTreeNode<E> node) {
  assert(_isInitialized);
  if (node.expanded && _nodes != null) {
    node.expanded = false;
    List<EasyTreeNode<E>> modified = node.getModifiedChildren;
    for (EasyTreeNode<E> item in modified) {
      int index = _nodes!.indexWhere((element) => element.key == item.key);
      if (index != -1) {
        State<StatefulWidget>? _state = _listKey.currentState;
        if (_state is SliverAnimatedListState) {
          _state.removeItem(index, (context, animation) {
            return _removedItemBuilder(item, context, animation);
          });
        } else if (_state is AnimatedListState) {
          _state.removeItem(index, (context, animation) {
            return _removedItemBuilder(item, context, animation);
          });
        }
        _nodes!.removeWhere((element) => item.key == element.key);
      }
    }
  }
}