1 /*
<lambda>null2  * Copyright (C) 2024 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.common.preview.domain.interactor
18 
19 import com.android.wallpaper.model.WallpaperModelsPair
20 import com.android.wallpaper.picker.common.preview.data.repository.BasePreviewRepository
21 import com.android.wallpaper.picker.customization.data.repository.WallpaperRepository
22 import com.android.wallpaper.picker.data.WallpaperModel
23 import dagger.hilt.android.scopes.ActivityRetainedScoped
24 import javax.inject.Inject
25 import kotlinx.coroutines.flow.Flow
26 import kotlinx.coroutines.flow.StateFlow
27 import kotlinx.coroutines.flow.combine
28 
29 // Based on WallpaperPreviewInteractor, except cleaned up to only bind wallpaper and workspace
30 // (workspace binding to be added). Also included the ability to preview current wallpapers when no
31 // previewing wallpaper is set.
32 @ActivityRetainedScoped
33 class BasePreviewInteractor
34 @Inject
35 constructor(
36     basePreviewRepository: BasePreviewRepository,
37     wallpaperRepository: WallpaperRepository,
38 ) {
39     private val previewingWallpaper: StateFlow<WallpaperModel?> =
40         basePreviewRepository.wallpaperModel
41     private val currentWallpapers: Flow<WallpaperModelsPair> =
42         wallpaperRepository.currentWallpaperModels
43 
44     val wallpapers: Flow<WallpaperModelsPair> =
45         combine(previewingWallpaper, currentWallpapers) { previewingWallpaper, currentWallpapers ->
46             if (previewingWallpaper != null) {
47                 // Preview wallpaper on both the home and lock screens if set.
48                 WallpaperModelsPair(previewingWallpaper, null)
49             } else {
50                 currentWallpapers
51             }
52         }
53 }
54