trackRoute method

void trackRoute(ModalRoute route)

Registers a modal route that is being shown. Only the reverse and dismissed transitions are observed.

Implementation

void trackRoute(ModalRoute<dynamic> route) {
  final animation = route.animation;
  if (animation == null) return;

  void listener(AnimationStatus status) {
    if (status == AnimationStatus.reverse) {
      _isClosing = true;
      _closingStartedAt = DateTime.now();
    } else if (status == AnimationStatus.dismissed) {
      animation.removeStatusListener(listener);
      _isClosing = false;
      _closingStartedAt = null;
    }
  }

  animation.addStatusListener(listener);
}