didStopUserGesture method
override
User gesture is no longer controlling the Navigator.
Paired with an earlier call to didStartUserGesture.
Implementation
@override
void didStopUserGesture() {
if (navigator!.userGestureInProgress) {
return;
}
// When the user gesture ends, if the user horizontal drag gesture initiated
// the flight (i.e. the back swipe) didn't move towards the pop direction at
// all, the animation will not play and thus the status update callback
// _handleAnimationUpdate will never be called when the gesture finishes. In
// this case the initiated flight needs to be manually invalidated.
bool isInvalidFlight(_HeroFlight flight) {
return flight.manifest.isUserGestureTransition
&& flight.manifest.type == HeroFlightDirection.pop
&& flight._proxyAnimation.isDismissed;
}
final List<_HeroFlight> invalidFlights = _flights.values
.where(isInvalidFlight)
.toList(growable: false);
// Treat these invalidated flights as dismissed. Calling _handleAnimationUpdate
// will also remove the flight from _flights.
for (final _HeroFlight flight in invalidFlights) {
flight._handleAnimationUpdate(AnimationStatus.dismissed);
}
}