topic_picture_bloc.dart
1.06 KB
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import 'package:flutter/cupertino.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
part 'topic_picture_event.dart';
part 'topic_picture_state.dart';
class TopicPictureBloc extends Bloc<TopicPictureEvent, TopicPictureState> {
final PageController pageController;
final int modelCount;
int _currentPage = 0;
int _selectItem = 0;
int get currentPage => _currentPage + 1;
int get selectItem => _selectItem;
TopicPictureBloc(this.pageController, this.modelCount) : super(TopicPictureInitial()) {
on<CurrentPageIndexChangeEvent>(_pageControllerChange);
on<SelectItemEvent>(_selectItemLoad);
}
@override
Future<void> close() {
pageController.dispose();
return super.close();
}
void _pageControllerChange(CurrentPageIndexChangeEvent event,Emitter<TopicPictureState> emitter) async {
_currentPage = event.pageIndex;
emitter(CurrentPageIndexState());
}
void _selectItemLoad(SelectItemEvent event,Emitter<TopicPictureState> emitter) async {
_selectItem = event.selectIndex;
emitter(SelectItemChangeState());
}
}