createTooltipController function

  1. @Injectable.new()
TooltipController createTooltipController(
  1. @Optional.new() @SkipSelf.new() TooltipController controller,
  2. @Optional.new() Disposer disposer
)

Implementation

@Injectable()
TooltipController createTooltipController(
    @Optional() @SkipSelf() TooltipController controller,
    @Optional() Disposer disposer) {
  // If TooltipController was bound higher up the tree use that instance. This
  // allows an application to override the service at root.
  if (controller != null) return controller;

  if (_singletonController != null) return _singletonController!;

  _singletonController = TooltipController();
  disposer?.addFunction(() {
    _singletonController = null;
  });
  return _singletonController!;
}