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 enabled notification listener packages
29  *
30  * @param app The current application
31  * @param user The user the services should be determined for
32  */
33 class EnabledNotificationListenersLiveData(
34     private val app: Application,
35     private val user: UserHandle
36 ) : SmartAsyncMediatorLiveData<List<String>>() {
37 
38     override suspend fun loadDataAndPostValue(job: Job) {
39         if (job.isCancelled) {
40             return
41         }
42 
43         val packageNames = Settings.Secure.getString(
44                 Utils.getUserContext(app, user).contentResolver,
45                 /* Settings.Secure.ENABLED_NOTIFICATION_LISTENERS */
46                 "enabled_notification_listeners")
47                 ?.split(":")
48                 ?.map { pkgOrComponent ->
49                     if ('/' in pkgOrComponent) {
50                         ComponentName.unflattenFromString(pkgOrComponent)
51                                 ?.packageName
52                                 ?: pkgOrComponent
53                     } else {
54                         pkgOrComponent
55                     }
56                 } ?: emptyList()
57 
58         postValue(packageNames)
59     }
60 
61     /**
62      * Repository for [EnabledNotificationListenersLiveData]
63      *
64      * <p> Key value is a user, value is its corresponding LiveData.
65      */
66     companion object : DataRepositoryForPackage<UserHandle,
67             EnabledNotificationListenersLiveData>() {
68         override fun newValue(key: UserHandle): EnabledNotificationListenersLiveData {
69             return EnabledNotificationListenersLiveData(PermissionControllerApplication.get(), key)
70         }
71     }
72 }