1 /*
2  * 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.customization.ui.viewmodel
18 
19 import androidx.lifecycle.ViewModel
20 import com.android.wallpaper.model.Screen
21 import com.android.wallpaper.model.Screen.LOCK_SCREEN
22 import dagger.hilt.android.lifecycle.HiltViewModel
23 import javax.inject.Inject
24 import kotlinx.coroutines.flow.MutableStateFlow
25 import kotlinx.coroutines.flow.asStateFlow
26 import kotlinx.coroutines.flow.map
27 
28 @HiltViewModel
29 class CustomizationPickerViewModel2
30 @Inject
31 constructor(
32     val customizationOptionsViewModel: CustomizationOptionsViewModel,
33 ) : ViewModel() {
34 
35     enum class PickerScreen {
36         MAIN,
37         CUSTOMIZATION_OPTION,
38     }
39 
40     private val _selectedPreviewScreen = MutableStateFlow(LOCK_SCREEN)
41     val selectedPreviewScreen = _selectedPreviewScreen.asStateFlow()
42 
selectPreviewScreennull43     fun selectPreviewScreen(screen: Screen) {
44         _selectedPreviewScreen.value = screen
45     }
46 
47     val screen =
<lambda>null48         customizationOptionsViewModel.selectedOption.map {
49             if (it != null) {
50                 Pair(PickerScreen.CUSTOMIZATION_OPTION, it)
51             } else {
52                 Pair(PickerScreen.MAIN, null)
53             }
54         }
55 
onBackPressednull56     fun onBackPressed(): Boolean = customizationOptionsViewModel.deselectOption()
57 }
58