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.ui.model
18 
19 import android.os.UserHandle
20 import androidx.lifecycle.ViewModel
21 import androidx.lifecycle.ViewModelProvider
22 import com.android.permissioncontroller.permission.data.PackagePermissionsLiveData
23 import com.android.permissioncontroller.permission.data.SmartUpdateMediatorLiveData
24 import com.android.permissioncontroller.permission.data.get
25 
26 /**
27  * ViewModel for the AllAppPermissionsFragment. Has a liveData with the UI information for all
28  * Permissions (organized by group) that this package requests, and all the installed, non-runtime,
29  * normal protection permissions as well.
30  *
31  * @param packageName The name of the package this viewModel is representing
32  * @param user The user of the package this viewModel is representing
33  * @param filterGroup An optional single group that should be shown, no other groups will be
34  * shown
35  */
36 class AllAppPermissionsViewModel(
37     packageName: String,
38     user: UserHandle,
39     filterGroup: String?
40 ) : ViewModel() {
41 
42     val allPackagePermissionsLiveData = AllPackagePermissionsLiveData(packageName, user,
43         filterGroup)
44 
45     class AllPackagePermissionsLiveData(
46         packageName: String,
47         user: UserHandle,
48         private val filterGroup: String?
49     ) : SmartUpdateMediatorLiveData<@kotlin.jvm.JvmSuppressWildcards
50     Map<String, List<String>>>() {
51 
52         private val packagePermsLiveData =
53             PackagePermissionsLiveData[packageName, user]
54 
55         init {
56             addSource(packagePermsLiveData) {
57                 update()
58             }
59             update()
60         }
61 
62         override fun onUpdate() {
63             val permissions = packagePermsLiveData.value
64             if (permissions == null) {
65                 value = null
66                 return
67             }
68             value = permissions.filter { filterGroup == null || it.key == filterGroup }
69         }
70     }
71 }
72 
73 /**
74  * Factory for an AllAppPermissionsViewModel.
75  *
76  * @param app The current application
77  * @param packageName The name of the package this viewModel is representing
78  * @param user The user of the package this viewModel is representing
79  * @param filterGroup An optional single group that should be shown, no other groups will be
80  * shown
81  */
82 class AllAppPermissionsViewModelFactory(
83     private val packageName: String,
84     private val user: UserHandle,
85     private val filterGroup: String?
86 ) : ViewModelProvider.Factory {
87 
88     override fun <T : ViewModel> create(modelClass: Class<T>): T {
89         @Suppress("UNCHECKED_CAST")
90         return AllAppPermissionsViewModel(packageName, user, filterGroup) as T
91     }
92 }
93