m3_lightmeter/lib/screens/metering/ev_source/ev_source_bloc.dart

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import 'dart:async';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:lightmeter/screens/metering/communication/bloc_communication_metering.dart';
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import 'package:lightmeter/screens/metering/communication/state_communication_metering.dart'
as communication_states;
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abstract class EvSourceBloc<E, S> extends Bloc<E, S> {
final MeteringCommunicationBloc communicationBloc;
late final StreamSubscription<communication_states.SourceState> _communicationSubscription;
EvSourceBloc(this.communicationBloc, super.initialState) {
_communicationSubscription = communicationBloc.stream
.where((event) => event is communication_states.SourceState)
.map((event) => event as communication_states.SourceState)
.listen(onCommunicationState);
}
@override
Future<void> close() async {
await _communicationSubscription.cancel();
super.close();
}
void onCommunicationState(communication_states.SourceState communicationState);
}