DynamicWidgetFormBloc constructor Null safety

DynamicWidgetFormBloc(
  1. String? appId,
  2. {FormAction? formAction}
)

Implementation

DynamicWidgetFormBloc(this.appId, {this.formAction})
    : super(DynamicWidgetFormUninitialized()) {
  on<InitialiseNewDynamicWidgetFormEvent>((event, emit) {
    DynamicWidgetFormLoaded loaded = DynamicWidgetFormLoaded(
        value: DynamicWidgetModel(
      documentID: "",
      appId: "",
      description: "",
      content: "",
    ));
    emit(loaded);
  });

  on<InitialiseDynamicWidgetFormEvent>((event, emit) async {
    // Need to re-retrieve the document from the repository so that I get all associated types
    DynamicWidgetFormLoaded loaded = DynamicWidgetFormLoaded(
        value: await dynamicWidgetRepository(appId: appId)!
            .get(event.value!.documentID));
    emit(loaded);
  });
  on<InitialiseDynamicWidgetFormNoLoadEvent>((event, emit) async {
    DynamicWidgetFormLoaded loaded =
        DynamicWidgetFormLoaded(value: event.value);
    emit(loaded);
  });
  DynamicWidgetModel? newValue;
  on<ChangedDynamicWidgetDocumentID>((event, emit) async {
    if (state is DynamicWidgetFormInitialized) {
      final currentState = state as DynamicWidgetFormInitialized;
      newValue = currentState.value!.copyWith(documentID: event.value);
      if (formAction == FormAction.addAction) {
        emit(await _isDocumentIDValid(event.value, newValue!));
      } else {
        emit(SubmittableDynamicWidgetForm(value: newValue));
      }
    }
  });
  on<ChangedDynamicWidgetDescription>((event, emit) async {
    if (state is DynamicWidgetFormInitialized) {
      final currentState = state as DynamicWidgetFormInitialized;
      newValue = currentState.value!.copyWith(description: event.value);
      emit(SubmittableDynamicWidgetForm(value: newValue));
    }
  });
  on<ChangedDynamicWidgetContent>((event, emit) async {
    if (state is DynamicWidgetFormInitialized) {
      final currentState = state as DynamicWidgetFormInitialized;
      newValue = currentState.value!.copyWith(content: event.value);
      emit(SubmittableDynamicWidgetForm(value: newValue));
    }
  });
  on<ChangedDynamicWidgetBackground>((event, emit) async {
    if (state is DynamicWidgetFormInitialized) {
      final currentState = state as DynamicWidgetFormInitialized;
      newValue = currentState.value!.copyWith(background: event.value);
      emit(SubmittableDynamicWidgetForm(value: newValue));
    }
  });
  on<ChangedDynamicWidgetConditions>((event, emit) async {
    if (state is DynamicWidgetFormInitialized) {
      final currentState = state as DynamicWidgetFormInitialized;
      newValue = currentState.value!.copyWith(conditions: event.value);
      emit(SubmittableDynamicWidgetForm(value: newValue));
    }
  });
}