1 /*
2  * Copyright (C) 2018 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.car.settings.display;
18 
19 import static android.os.UserManager.DISALLOW_CONFIG_BRIGHTNESS;
20 
21 import static com.android.car.settings.enterprise.ActionDisabledByAdminDialogFragment.DISABLED_BY_ADMIN_CONFIRM_DIALOG_TAG;
22 import static com.android.car.settings.enterprise.EnterpriseUtils.hasUserRestrictionByDpm;
23 import static com.android.car.settings.enterprise.EnterpriseUtils.hasUserRestrictionByUm;
24 
25 import android.car.drivingstate.CarUxRestrictions;
26 import android.content.Context;
27 import android.database.ContentObserver;
28 import android.net.Uri;
29 import android.os.Handler;
30 import android.os.Looper;
31 import android.provider.Settings;
32 import android.widget.Toast;
33 
34 import androidx.preference.TwoStatePreference;
35 
36 import com.android.car.settings.R;
37 import com.android.car.settings.common.FragmentController;
38 import com.android.car.settings.common.Logger;
39 import com.android.car.settings.common.PreferenceController;
40 import com.android.car.settings.enterprise.EnterpriseUtils;
41 
42 /** Business logic for controlling the adaptive brightness setting. */
43 public class AdaptiveBrightnessTogglePreferenceController extends
44         PreferenceController<TwoStatePreference> {
45 
46     private static final Logger LOG =
47             new Logger(AdaptiveBrightnessTogglePreferenceController.class);
48     private static final Uri ADAPTIVE_BRIGHTNESS_URI = Settings.System.getUriFor(
49             Settings.System.SCREEN_BRIGHTNESS_MODE);
50     private final Handler mHandler = new Handler(Looper.getMainLooper());
51     private final ContentObserver mAdaptiveBrightnessObserver = new ContentObserver(mHandler) {
52         @Override
53         public void onChange(boolean selfChange) {
54             refreshUi();
55         }
56     };
57 
AdaptiveBrightnessTogglePreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)58     public AdaptiveBrightnessTogglePreferenceController(Context context, String preferenceKey,
59             FragmentController fragmentController, CarUxRestrictions uxRestrictions) {
60         super(context, preferenceKey, fragmentController, uxRestrictions);
61     }
62 
63     @Override
getPreferenceType()64     protected Class<TwoStatePreference> getPreferenceType() {
65         return TwoStatePreference.class;
66     }
67 
68     @Override
onCreateInternal()69     protected void onCreateInternal() {
70         super.onCreateInternal();
71         setClickableWhileDisabled(getPreference(), /* clickable= */ true, p -> {
72             if (hasUserRestrictionByDpm(getContext(), DISALLOW_CONFIG_BRIGHTNESS)) {
73                 showActionDisabledByAdminDialog();
74             } else {
75                 Toast.makeText(getContext(),
76                         getContext().getString(R.string.action_unavailable),
77                         Toast.LENGTH_LONG).show();
78                 LOG.d(getContext().getString(R.string.action_unavailable));
79             }
80         });
81     }
82 
83     @Override
onStartInternal()84     protected void onStartInternal() {
85         super.onStartInternal();
86         getContext().getContentResolver().registerContentObserver(ADAPTIVE_BRIGHTNESS_URI,
87                 /* notifyForDescendants= */ false, mAdaptiveBrightnessObserver);
88     }
89 
90     @Override
onStopInternal()91     protected void onStopInternal() {
92         super.onStopInternal();
93         getContext().getContentResolver().unregisterContentObserver(mAdaptiveBrightnessObserver);
94     }
95 
96     @Override
updateState(TwoStatePreference preference)97     protected void updateState(TwoStatePreference preference) {
98         preference.setChecked(isAdaptiveBrightnessChecked());
99     }
100 
101     @Override
getDefaultAvailabilityStatus()102     public int getDefaultAvailabilityStatus() {
103         if (!supportsAdaptiveBrightness()) {
104             return UNSUPPORTED_ON_DEVICE;
105         }
106         if (hasUserRestrictionByUm(getContext(), DISALLOW_CONFIG_BRIGHTNESS)
107                 || hasUserRestrictionByDpm(getContext(), DISALLOW_CONFIG_BRIGHTNESS)) {
108             return AVAILABLE_FOR_VIEWING;
109         }
110         return AVAILABLE;
111     }
112 
113     @Override
handlePreferenceChanged(TwoStatePreference preference, Object newValue)114     protected boolean handlePreferenceChanged(TwoStatePreference preference, Object newValue) {
115         boolean enableAdaptiveBrightness = (boolean) newValue;
116         Settings.System.putInt(getContext().getContentResolver(),
117                 Settings.System.SCREEN_BRIGHTNESS_MODE,
118                 enableAdaptiveBrightness ? Settings.System.SCREEN_BRIGHTNESS_MODE_AUTOMATIC
119                         : Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
120         return true;
121     }
122 
isAdaptiveBrightnessChecked()123     private boolean isAdaptiveBrightnessChecked() {
124         int brightnessMode = Settings.System.getInt(getContext().getContentResolver(),
125                 Settings.System.SCREEN_BRIGHTNESS_MODE,
126                 Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL);
127         return brightnessMode != Settings.System.SCREEN_BRIGHTNESS_MODE_MANUAL;
128     }
129 
supportsAdaptiveBrightness()130     private boolean supportsAdaptiveBrightness() {
131         return getContext().getResources().getBoolean(R.bool.config_automatic_brightness_available);
132     }
133 
showActionDisabledByAdminDialog()134     private void showActionDisabledByAdminDialog() {
135         getFragmentController().showDialog(
136                 EnterpriseUtils.getActionDisabledByAdminDialog(getContext(),
137                         DISALLOW_CONFIG_BRIGHTNESS),
138                 DISABLED_BY_ADMIN_CONFIRM_DIALOG_TAG);
139     }
140 }
141