1 /*
2  * Copyright (C) 2020 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.permissioncontroller.permission.data
18 
19 import android.app.Application
20 import android.content.ComponentName
21 import android.os.UserHandle
22 import android.provider.Settings
23 import com.android.permissioncontroller.PermissionControllerApplication
24 import com.android.permissioncontroller.permission.utils.Utils
25 import kotlinx.coroutines.Job
26 
27 /**
28  * A LiveData which tracks selected voice interaction service package
29  *
30  * @param app The current application
31  * @param user The user the services should be determined for
32  */
33 class SelectedVoiceInteractionServiceLiveData(
34     private val app: Application,
35     private val user: UserHandle
36 ) : SmartAsyncMediatorLiveData<String?>() {
37 
loadDataAndPostValuenull38     override suspend fun loadDataAndPostValue(job: Job) {
39         if (job.isCancelled) {
40             return
41         }
42 
43         val packageName =
44             Settings.Secure.getString(
45                     Utils.getUserContext(app, user).contentResolver,
46                     // Settings.Secure.VOICE_INTERACTION_SERVICE
47                     "voice_interaction_service"
48                 )
49                 ?.let(ComponentName::unflattenFromString)
50                 ?.packageName
51 
52         postValue(packageName)
53     }
54 
55     /**
56      * Repository for [SelectedVoiceInteractionServiceLiveData]
57      *
58      * <p> Key value is a user, value is its corresponding LiveData.
59      */
60     companion object :
61         DataRepositoryForPackage<UserHandle, SelectedVoiceInteractionServiceLiveData>() {
newValuenull62         override fun newValue(key: UserHandle): SelectedVoiceInteractionServiceLiveData {
63             return SelectedVoiceInteractionServiceLiveData(
64                 PermissionControllerApplication.get(),
65                 key
66             )
67         }
68     }
69 }
70