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bloc 8.0.0 mapEventToState deprecated #7

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merged 1 commit into from
Mar 13, 2022
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bloc 8.0.0 mapEventToState deprecated #7

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41 changes: 17 additions & 24 deletions lib/blocs/habit/habit_bloc.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -7,52 +7,45 @@ import 'package:timefly/models/user.dart';

class HabitsBloc extends Bloc<HabitsEvent, HabitsState> {
///初始化状态为正在加载
HabitsBloc() : super(HabitsLoadInProgress());

@override
Stream<HabitsState> mapEventToState(HabitsEvent event) async* {
if (event is HabitsLoad) {
yield* _mapHabitsLoadToState();
} else if (event is HabitsAdd) {
yield* _mapHabitsAddToState(event);
} else if (event is HabitUpdate) {
yield* _mapHabitUpdateToState(event);
}
HabitsBloc() : super(HabitsLoadInProgress()) {
on<HabitsLoad>(_mapHabitsLoadToState);
on<HabitsAdd>(_mapHabitsAddToState);
on<HabitUpdate>(_mapHabitUpdateToState);
}

Stream<HabitsState> _mapHabitsLoadToState() async* {
void _mapHabitsLoadToState(
HabitsLoad event, Emitter<HabitsState> emit) async {
try {
if (!SessionUtils.sharedInstance().isLogin()) {
yield HabitLoadSuccess([]);
emit(HabitLoadSuccess([]));
return;
}
List<Habit> habits = await DatabaseProvider.db.getAllHabits();
print(habits);
yield HabitLoadSuccess(habits);
emit(HabitLoadSuccess(habits));
} catch (e) {
print(e);
yield HabitsLodeFailure();
emit(HabitsLodeFailure());
}
}

Stream<HabitsState> _mapHabitsAddToState(HabitsAdd habitsAdd) async* {
void _mapHabitsAddToState(HabitsAdd event, Emitter<HabitsState> emit) {
if (state is HabitLoadSuccess) {
final List<Habit> habits = List.from((state as HabitLoadSuccess).habits)
..add(habitsAdd.habit);
yield HabitLoadSuccess(habits);
DatabaseProvider.db.insert(habitsAdd.habit);
..add(event.habit);
emit(HabitLoadSuccess(habits));
DatabaseProvider.db.insert(event.habit);
}
}

Stream<HabitsState> _mapHabitUpdateToState(HabitUpdate habitUpdate) async* {
void _mapHabitUpdateToState(HabitUpdate event, Emitter<HabitsState> emit) {
if (state is HabitLoadSuccess) {
final List<Habit> habits = (state as HabitLoadSuccess)
.habits
.map((habit) =>
habit.id == habitUpdate.habit.id ? habitUpdate.habit : habit)
.map((habit) => habit.id == event.habit.id ? event.habit : habit)
.toList();
yield HabitLoadSuccess(habits);
DatabaseProvider.db.update(habitUpdate.habit);
emit(HabitLoadSuccess(habits));
DatabaseProvider.db.update(event.habit);
}
}
}