mapEventToState method

@override Stream<FastThemeBlocState> mapEventToState(FastThemeBlocEvent event)

Must be implemented when a class extends BidirectionalBloc. mapEventToState is called whenever an event is added and will convert that event into a new BloC state. It can yield zero, one or several states for an event.

Implementation

@override
Stream<FastThemeBlocState> mapEventToState(FastThemeBlocEvent event) async* {
  if (event.type == FastThemeBlocEventType.light) {
    yield FastThemeBlocState(
      brightness: Brightness.light,
      themeMode: ThemeMode.light,
    );
  } else if (event.type == FastThemeBlocEventType.dark) {
    yield FastThemeBlocState(
      brightness: Brightness.dark,
      themeMode: ThemeMode.dark,
    );
  } else {
    yield FastThemeBlocState(
      brightness:
          WidgetsBinding.instance.platformDispatcher.platformBrightness,
      themeMode: ThemeMode.system,
    );
  }
}