1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.wallpaper.picker.di.modules
18 
19 import dagger.Module
20 import dagger.Provides
21 import dagger.hilt.InstallIn
22 import dagger.hilt.components.SingletonComponent
23 import javax.inject.Qualifier
24 import kotlinx.coroutines.CoroutineDispatcher
25 import kotlinx.coroutines.CoroutineScope
26 import kotlinx.coroutines.Dispatchers
27 
28 /** Qualifier for main thread [CoroutineDispatcher] bound to app lifecycle. */
29 @Qualifier annotation class MainDispatcher
30 
31 /** Qualifier for background thread [CoroutineDispatcher] for long running and blocking tasks. */
32 @Qualifier annotation class BackgroundDispatcher
33 
34 @Module
35 @InstallIn(SingletonComponent::class)
36 object DispatchersModule {
37 
38     @Provides
39     @MainDispatcher
provideMainScopenull40     fun provideMainScope(): CoroutineScope = CoroutineScope(Dispatchers.Main)
41 
42     @Provides @MainDispatcher fun provideMainDispatcher(): CoroutineDispatcher = Dispatchers.Main
43 
44     @Provides
45     @BackgroundDispatcher
46     fun provideBackgroundScope(): CoroutineScope = CoroutineScope(Dispatchers.IO)
47 
48     @Provides
49     @BackgroundDispatcher
50     fun provideBackgroundDispatcher(): CoroutineDispatcher = Dispatchers.IO
51 }
52