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.systemui.lifecycle
18 
19 import androidx.compose.runtime.getValue
20 import kotlinx.coroutines.flow.Flow
21 import kotlinx.coroutines.flow.MutableStateFlow
22 import kotlinx.coroutines.flow.StateFlow
23 import kotlinx.coroutines.flow.asStateFlow
24 import kotlinx.coroutines.flow.flowOf
25 
26 class FakeSysUiViewModel(
<lambda>null27     private val onActivation: () -> Unit = {},
<lambda>null28     private val onDeactivation: () -> Unit = {},
29     upstreamFlow: Flow<Boolean> = flowOf(true),
30     upstreamStateFlow: StateFlow<Boolean> = MutableStateFlow(true).asStateFlow(),
31 ) : ExclusiveActivatable() {
32 
33     var activationCount = 0
34     var cancellationCount = 0
35 
36     private val hydrator = Hydrator("test")
37     val stateBackedByFlow: Boolean by
38         hydrator.hydratedStateOf(
39             traceName = "test",
40             initialValue = true,
41             source = upstreamFlow,
42         )
43     val stateBackedByStateFlow: Boolean by
44         hydrator.hydratedStateOf(
45             traceName = "test",
46             source = upstreamStateFlow,
47         )
48 
onActivatednull49     override suspend fun onActivated(): Nothing {
50         activationCount++
51         onActivation()
52         try {
53             hydrator.activate()
54         } finally {
55             cancellationCount++
56             onDeactivation()
57         }
58     }
59 }
60