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.settings.development;
18 
19 import static com.android.settingslib.core.lifecycle.HideNonSystemOverlayMixin.SECURE_OVERLAY_SETTINGS;
20 
21 import android.content.Context;
22 import android.provider.Settings;
23 
24 import androidx.annotation.VisibleForTesting;
25 import androidx.preference.Preference;
26 import androidx.preference.TwoStatePreference;
27 
28 import com.android.settings.core.PreferenceControllerMixin;
29 import com.android.settingslib.development.DeveloperOptionsPreferenceController;
30 
31 /**
32  * A controller helps enable or disable a developer setting which allows non system overlays on
33  * Settings app.
34  */
35 public class OverlaySettingsPreferenceController extends DeveloperOptionsPreferenceController
36         implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
37 
38     private static final String KEY_OVERLAY_SETTINGS = "overlay_settings";
39 
OverlaySettingsPreferenceController(Context context)40     public OverlaySettingsPreferenceController(Context context) {
41         super(context);
42     }
43 
44     @Override
isAvailable()45     public boolean isAvailable() {
46         return true;
47     }
48 
49     @Override
getPreferenceKey()50     public String getPreferenceKey() {
51         return KEY_OVERLAY_SETTINGS;
52     }
53 
54     @Override
onPreferenceChange(Preference preference, Object newValue)55     public boolean onPreferenceChange(Preference preference, Object newValue) {
56         setOverlaySettingsEnabled(mContext, (Boolean) newValue);
57         return true;
58     }
59 
60     @Override
updateState(Preference preference)61     public void updateState(Preference preference) {
62         ((TwoStatePreference) preference).setChecked(isOverlaySettingsEnabled(mContext));
63     }
64 
65     /**
66      * Check if this setting is enabled or not.
67      */
68     @VisibleForTesting
isOverlaySettingsEnabled(Context context)69     static boolean isOverlaySettingsEnabled(Context context) {
70         return Settings.Secure.getInt(context.getContentResolver(),
71                 SECURE_OVERLAY_SETTINGS, 0 /* defValue */) != 0;
72     }
73 
74     /**
75      * Enable this setting.
76      */
77     @VisibleForTesting
setOverlaySettingsEnabled(Context context, boolean enabled)78     static void setOverlaySettingsEnabled(Context context, boolean enabled) {
79         Settings.Secure.putInt(context.getContentResolver(),
80                 SECURE_OVERLAY_SETTINGS, enabled ? 1 : 0);
81     }
82 
83     @Override
onDeveloperOptionsSwitchDisabled()84     protected void onDeveloperOptionsSwitchDisabled() {
85         super.onDeveloperOptionsSwitchDisabled();
86         setOverlaySettingsEnabled(mContext, false);
87     }
88 }
89