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.systemui.statusbar.notification.stack.ui.viewmodel
18 
19 import com.android.systemui.dagger.SysUISingleton
20 import com.android.systemui.statusbar.notification.stack.domain.interactor.HideNotificationsInteractor
21 import com.android.systemui.statusbar.notification.stack.shared.DisplaySwitchNotificationsHiderFlag
22 import javax.inject.Inject
23 import javax.inject.Provider
24 import kotlinx.coroutines.flow.Flow
25 import kotlinx.coroutines.flow.emptyFlow
26 
27 @SysUISingleton
28 class HideListViewModel
29 @Inject
30 constructor(
31     private val hideNotificationsInteractor: Provider<HideNotificationsInteractor>,
32 ) {
33     /**
34      * Emits `true` whenever we want to hide the notifications list for performance reasons, then it
35      * emits 'false' to show notifications back. This is used on foldable devices and emits
36      * *nothing* on other devices.
37      */
38     val shouldHideListForPerformance: Flow<Boolean>
39         get() =
40             if (DisplaySwitchNotificationsHiderFlag.isEnabled) {
41                 hideNotificationsInteractor.get().shouldHideNotifications
42             } else emptyFlow()
43 }
44