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.volume.panel.component.anc.ui.viewmodel
18 
19 import android.content.Intent
20 import androidx.slice.Slice
21 import androidx.slice.SliceItem
22 import com.android.systemui.volume.panel.component.anc.domain.AncAvailabilityCriteria
23 import com.android.systemui.volume.panel.component.anc.domain.interactor.AncSliceInteractor
24 import com.android.systemui.volume.panel.component.anc.domain.model.AncSlices
25 import com.android.systemui.volume.panel.dagger.scope.VolumePanelScope
26 import javax.inject.Inject
27 import kotlinx.coroutines.CoroutineScope
28 import kotlinx.coroutines.ExperimentalCoroutinesApi
29 import kotlinx.coroutines.flow.Flow
30 import kotlinx.coroutines.flow.SharingStarted
31 import kotlinx.coroutines.flow.StateFlow
32 import kotlinx.coroutines.flow.filterIsInstance
33 import kotlinx.coroutines.flow.map
34 import kotlinx.coroutines.flow.stateIn
35 
36 /** Volume Panel ANC component view model. */
37 @OptIn(ExperimentalCoroutinesApi::class)
38 @VolumePanelScope
39 class AncViewModel
40 @Inject
41 constructor(
42     @VolumePanelScope private val coroutineScope: CoroutineScope,
43     private val interactor: AncSliceInteractor,
44     private val availabilityCriteria: AncAvailabilityCriteria,
45 ) {
46 
47     val isAvailable: Flow<Boolean>
48         get() = availabilityCriteria.isAvailable()
49 
50     /** ANC [Slice]. Null when there is no slice available for ANC. */
51     val popupSlice: StateFlow<Slice?> =
52         interactor.ancSlices
53             .filterIsInstance<AncSlices.Ready>()
<lambda>null54             .map { it.popupSlice }
55             .stateIn(coroutineScope, SharingStarted.Eagerly, null)
56 
57     /** Button [Slice] to be shown in the VolumePanel. Null when there is no ANC Slice available. */
58     val buttonSlice: StateFlow<Slice?> =
59         interactor.ancSlices
60             .filterIsInstance<AncSlices.Ready>()
<lambda>null61             .map { it.buttonSlice }
62             .stateIn(coroutineScope, SharingStarted.Eagerly, null)
63 
isClickablenull64     fun isClickable(slice: Slice?): Boolean {
65         slice ?: return false
66         val slices = ArrayDeque<SliceItem>()
67         slices.addAll(slice.items)
68         while (slices.isNotEmpty()) {
69             val item: SliceItem = slices.removeFirst()
70             when (item.format) {
71                 android.app.slice.SliceItem.FORMAT_ACTION -> {
72                     val itemActionIntent: Intent? = item.action?.intent
73                     if (itemActionIntent?.hasExtra(EXTRA_ANC_ENABLED) == true) {
74                         return itemActionIntent.getBooleanExtra(EXTRA_ANC_ENABLED, true)
75                     }
76                 }
77                 android.app.slice.SliceItem.FORMAT_SLICE -> {
78                     item.slice?.items?.let(slices::addAll)
79                 }
80             }
81         }
82         return true
83     }
84 
85     private companion object {
86         const val EXTRA_ANC_ENABLED = "EXTRA_ANC_ENABLED"
87     }
88 
89     /** Call this to update [popupSlice] width in a reaction to container size change. */
onPopupSliceWidthChangednull90     fun onPopupSliceWidthChanged(width: Int) {
91         interactor.onPopupSliceWidthChanged(width)
92     }
93 
94     /** Call this to update [buttonSlice] width in a reaction to container size change. */
onButtonSliceWidthChangednull95     fun onButtonSliceWidthChanged(width: Int) {
96         interactor.onButtonSliceWidthChanged(width)
97     }
98 }
99