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lib/blocs/category_widget/category_widget_bloc.dart

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+import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
+import 'package:flutter_unit/blocs/category/category_bloc.dart';
+import 'package:flutter_unit/blocs/category/category_event.dart';
+import 'package:flutter_unit/repositories/itf/category_repository.dart';
+
+import 'category_widget_event.dart';
+import 'category_widget_state.dart';
+
+/// create by 张风捷特烈 on 2020-04-21
+/// contact me by email 1981462002@qq.com
+/// 说明:
+
+class CategoryWidgetBloc
+    extends Bloc<CategoryWidgetEvent, CategoryWidgetState> {
+  final CategoryBloc categoryBloc;
+
+  CategoryWidgetBloc({@required this.categoryBloc}) {
+    print('CategoryBloc');
+  }
+
+  CategoryRepository get repository => categoryBloc.repository;
+
+  @override
+  CategoryWidgetState get initialState => CategoryWidgetEmptyState(); //初始状态
+
+  @override
+  Stream<CategoryWidgetState> mapEventToState(
+      CategoryWidgetEvent event) async* {
+    if (event is EventLoadCategoryWidget) {
+      final widgets =
+          await repository.loadCategoryWidgets(categoryId: event.categoryId);
+      yield widgets.isNotEmpty
+          ? CategoryWidgetLoadedState(widgets)
+          : CategoryWidgetEmptyState();
+      categoryBloc.add(EventLoadCategory());
+    }
+
+    if (event is EventToggleCategoryWidget) {
+      await repository.toggleCategory(event.categoryId, event.widgetId);
+      add(EventLoadCategoryWidget(event.categoryId));
+    }
+  }
+}

lib/blocs/category_widget/category_widget_event.dart

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+import 'package:equatable/equatable.dart';
+import 'package:flutter/material.dart';
+
+/// create by 张风捷特烈 on 2020-04-21
+/// contact me by email 1981462002@qq.com
+/// 说明: 
+
+abstract class CategoryWidgetEvent extends Equatable{
+  @override
+  List<Object> get props => [];
+}
+
+//class EventLoadCategory extends CategoryWidgetEvent{
+//  @override
+//  List<Object> get props => [];
+//}
+
+class EventLoadCategoryWidget extends CategoryWidgetEvent{
+  final int categoryId;
+
+  EventLoadCategoryWidget(this.categoryId);
+
+  @override
+  List<Object> get props => [categoryId];
+}
+
+class EventToggleCategoryWidget extends CategoryWidgetEvent{
+  final int categoryId;
+  final int widgetId;
+
+  EventToggleCategoryWidget(this.categoryId,this.widgetId);
+
+  @override
+  List<Object> get props => [categoryId,widgetId];
+}
+
+//class EventDeleteCategory extends CategoryWidgetEvent{
+//  final int id;
+//
+//  EventDeleteCategory({@required this.id});
+//
+//  @override
+//  List<Object> get props => [id];
+//}
+//
+//class EventAddCategory extends CategoryWidgetEvent{
+//  final String name;
+//  final String info;
+//  final String color;
+//
+//  EventAddCategory({@required this.name, this.info, this.color});
+//
+//  @override
+//  List<Object> get props => [name,info,color];
+//}

lib/blocs/category_widget/category_widget_state.dart

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+import 'package:equatable/equatable.dart';
+import 'package:flutter_unit/model/category_model.dart';
+import 'package:flutter_unit/model/widget_model.dart';
+
+/// create by 张风捷特烈 on 2020-04-21
+/// contact me by email 1981462002@qq.com
+/// 说明: 
+
+class CategoryWidgetState extends Equatable{
+  @override
+  List<Object> get props => [];
+
+}
+
+
+class CategoryWidgetLoadedState extends CategoryWidgetState {
+  final List<WidgetModel> widgets;
+
+  CategoryWidgetLoadedState(this.widgets);
+
+  List<Object> get props => [widgets];
+
+}
+
+class CategoryWidgetEmptyState extends CategoryWidgetState{
+  List<Object> get props => [];
+}
+
+
+class AddCategoryFailed extends CategoryWidgetState{
+
+}