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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.settings.development;
18 
19 import android.content.Context;
20 import android.os.SystemProperties;
21 import android.view.ThreadedRenderer;
22 
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 import com.android.settingslib.development.SystemPropPoker;
29 
30 public class ForceDarkPreferenceController extends DeveloperOptionsPreferenceController
31         implements Preference.OnPreferenceChangeListener, PreferenceControllerMixin {
32 
33     private static final String HWUI_FORCE_DARK = "hwui_force_dark";
34 
ForceDarkPreferenceController(Context context)35     public ForceDarkPreferenceController(Context context) {
36         super(context);
37     }
38 
39     @Override
getPreferenceKey()40     public String getPreferenceKey() {
41         return HWUI_FORCE_DARK;
42     }
43 
44     @Override
onPreferenceChange(Preference preference, Object newValue)45     public boolean onPreferenceChange(Preference preference, Object newValue) {
46         final boolean isEnabled = (Boolean) newValue;
47         SystemProperties.set(ThreadedRenderer.DEBUG_FORCE_DARK,
48                 isEnabled ? "true" : null);
49         SystemPropPoker.getInstance().poke();
50         return true;
51     }
52 
53     @Override
updateState(Preference preference)54     public void updateState(Preference preference) {
55         final boolean isEnabled = SystemProperties.getBoolean(
56                 ThreadedRenderer.DEBUG_FORCE_DARK, false /* default */);
57         ((SwitchPreference) mPreference).setChecked(isEnabled);
58     }
59 
60     @Override
onDeveloperOptionsSwitchDisabled()61     protected void onDeveloperOptionsSwitchDisabled() {
62         super.onDeveloperOptionsSwitchDisabled();
63         SystemProperties.set(ThreadedRenderer.DEBUG_FORCE_DARK, null);
64         ((SwitchPreference) mPreference).setChecked(false);
65     }
66 }
67