controllerByType<U extends StateXController> method
Retrieve a StateXController by type.
Implementation
@override
U? controllerByType<U extends StateXController>() {
U? controller;
// Take a copy of the types
final temp = Map.of(_mapControllerTypes);
// and remove all not of the specified type
temp.removeWhere((key, value) => value != U);
// There can only be one instance of a particular type returned.
if (temp.length == 1) {
controller = _mapControllerById[temp.keys.first] as U?;
}
return controller;
}