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