INNER CODE UNIT · Dart

BackgroundUseCase

ShadyBoukhary/flutter_clean_architecture · lib/src/background_usecase.dart:88

abstract class BackgroundUseCase<T, Params> extends UseCase<T, Params> {
  BackgroundUseCaseState _state = BackgroundUseCaseState.idle;
  late Isolate? _isolate;
  final BehaviorSubject<T> _subject;
  final ReceivePort _receivePort;
  static late UseCaseTask _run;

  BackgroundUseCase()
      : assert(!kIsWeb, '''
        [BackgroundUseCase] is not supported on web due to dart:isolate limitations.
      '''),
        _receivePort = ReceivePort(),
        _subject = BehaviorSubject(),
        super() {
    _receivePort.listen(_handleMessage);
  }

  BackgroundUseCaseState get state => _state;

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