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
18 
19 import com.android.compatibility.common.util.SystemUtil
20 
21 /**
22  * Read the {@link UsageCount} of the group of the permission from the Ui.
23  *
24  * @param groupLabel label fo the group the count should be read for
25  *
26  * @return usage counts for the group of the permission
27  */
28 fun getUsageCountsFromUi(groupLabel: CharSequence): UsageCount {
29     scrollToPreference(groupLabel)
30 
31     return SystemUtil.getEventually {
32         val summary = getPreferenceSummary(groupLabel)
33 
34         // Matches two numbers out of the summary line, i.e. "...3...12..." -> "3", "12"
35         val groups = Regex("^[^\\d]*(\\d+)[^\\d]*(\\d+)[^\\d]*\$")
36                 .find(summary)?.groupValues
37                 ?: throw Exception("No usage counts found")
38 
39         UsageCount(groups[1].toInt(), groups[2].toInt())
40     }
41 }
42 
43 /**
44  * Usage counts as read via {@link #getUsageCountsFromUi}.
45  */
46 data class UsageCount(
47     /** Number of apps with permission granted */
48     val granted: Int,
49     /** Number of apps that request permissions */
50     val total: Int
51 )