1 /*
2  * Copyright (C) 2019 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.settings.privacy;
18 
19 import android.accessibilityservice.AccessibilityServiceInfo;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.view.accessibility.AccessibilityManager;
23 
24 import androidx.annotation.NonNull;
25 import androidx.preference.Preference;
26 import androidx.preference.PreferenceScreen;
27 
28 import com.android.settings.R;
29 import com.android.settings.core.BasePreferenceController;
30 import com.android.settingslib.utils.StringUtil;
31 
32 import java.util.List;
33 
34 
35 public class AccessibilityUsagePreferenceController extends BasePreferenceController {
36 
37     private final AccessibilityManager mAccessibilityManager;
38     @NonNull
39     private List<AccessibilityServiceInfo> mEnabledServiceInfos;
40 
AccessibilityUsagePreferenceController(Context context, String preferenceKey)41     public AccessibilityUsagePreferenceController(Context context, String preferenceKey) {
42         super(context, preferenceKey);
43         mAccessibilityManager = mContext.getSystemService(AccessibilityManager.class);
44         mEnabledServiceInfos = mAccessibilityManager.getEnabledAccessibilityServiceList(
45                 AccessibilityServiceInfo.FEEDBACK_ALL_MASK);
46     }
47 
48     @Override
updateState(Preference preference)49     public void updateState(Preference preference) {
50         super.updateState(preference);
51         mEnabledServiceInfos = mAccessibilityManager.getEnabledAccessibilityServiceList(
52                 AccessibilityServiceInfo.FEEDBACK_ALL_MASK);
53 
54         if (mEnabledServiceInfos.isEmpty()) {
55             preference.setVisible(false);
56         }
57     }
58 
59     @Override
getAvailabilityStatus()60     public int getAvailabilityStatus() {
61         return mEnabledServiceInfos.isEmpty() ? UNSUPPORTED_ON_DEVICE : AVAILABLE;
62     }
63 
64     @Override
getSummary()65     public CharSequence getSummary() {
66         return StringUtil.getIcuPluralsString(mContext, mEnabledServiceInfos.size(),
67                 R.string.accessibility_usage_summary);
68     }
69 
70     @Override
displayPreference(@onNull PreferenceScreen screen)71     public void displayPreference(@NonNull PreferenceScreen screen) {
72         super.displayPreference(screen);
73 
74         Preference pref = screen.findPreference(getPreferenceKey());
75         if (pref != null) {
76             pref.setIntent(new Intent(Intent.ACTION_REVIEW_ACCESSIBILITY_SERVICES)
77                     .setPackage(mContext.getPackageManager().getPermissionControllerPackageName()));
78         }
79     }
80 }
81