Mobiles_programming/lib/presentation/home_page/bloc/bloc.dart

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import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:mobiles_labs_5th_semester/data/repositories/games_repository.dart';
import 'events.dart';
import 'state.dart';
class HomeBloc extends Bloc<HomeEvent, HomeState> {
final GamesRepository repo;
//связывание метода _onLoadData с конкретным событием в конструкторе
HomeBloc(this.repo) : super (const HomeState()) {
on<HomeLoadDataEvent>(_onLoadData);
}
//Emitter - генератор событий
Future<void> _onLoadData(HomeLoadDataEvent event, Emitter<HomeState> emit) async{
if (event.nextPage == null) {
emit(state.copyWith(isLoading: true));
} else {
emit(state.copyWith(isPaginationLoading: true));
}
String? error;
final data = await repo.loadData(
q: event.search,
page: event.nextPage ?? 1,
onError: (e) => error = e
);
if (event.nextPage != null) {
data?.data?.insertAll(0, state.data?.data ?? []);
}
emit(state.copyWith(
data: data,
isLoading: false,
isPaginationLoading: false,
error: error
));
}
}