getScrollControllerForRowVertical method

Implementation

ScrollController getScrollControllerForRowVertical() {
  if (scrollControllerVertical == null) {
    final controller = ScrollController();
    _scrollControllerForRowVerticalListener = () {
      if (controller.hasClients) {
        _scheduleScrollSync();
      }
    };
    controller.addListener(_scrollControllerForRowVerticalListener!);
    scrollControllerVertical = controller;
  }
  return scrollControllerVertical!;
}