getActiveIndexFor method

int? getActiveIndexFor(
  1. TreeSliverNode<Object?> node
)

Returns the current row index of the given TreeSliverNode.

If the node is not currently active in the tree, meaning its parent is collapsed, this will return null.

Implementation

int? getActiveIndexFor(TreeSliverNode<Object?> node) {
  assert(_state != null);
  return _state!.getActiveIndexFor(node);
}