1 /*
2  * Copyright (C) 2019 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  *      http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
11  * KIND, either express or implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14 
15 package com.android.settings.display.darkmode;
16 
17 import android.app.UiModeManager;
18 import android.content.Context;
19 import android.content.res.Configuration;
20 import android.os.PowerManager;
21 import androidx.preference.DropDownPreference;
22 import androidx.preference.Preference;
23 import androidx.preference.PreferenceScreen;
24 import com.android.settings.R;
25 import com.android.settings.core.BasePreferenceController;
26 
27 /**
28  * Controller for the dark ui option dropdown
29  */
30 public class DarkModeScheduleSelectorController extends BasePreferenceController
31         implements Preference.OnPreferenceChangeListener {
32 
33     private final UiModeManager mUiModeManager;
34     private PowerManager mPowerManager;
35     private DropDownPreference mPreference;
36     private String mCurrentMode;
37 
DarkModeScheduleSelectorController(Context context, String key)38     public DarkModeScheduleSelectorController(Context context, String key) {
39         super(context, key);
40         mUiModeManager = context.getSystemService(UiModeManager.class);
41         mPowerManager = context.getSystemService(PowerManager.class);
42     }
43 
44     @Override
displayPreference(PreferenceScreen screen)45     public void displayPreference(PreferenceScreen screen) {
46         super.displayPreference(screen);
47 
48         mPreference = screen.findPreference(getPreferenceKey());
49     }
50 
51     @Override
getAvailabilityStatus()52     public int getAvailabilityStatus() {
53         return BasePreferenceController.AVAILABLE;
54     }
55 
56     @Override
updateState(Preference preference)57     public final void updateState(Preference preference) {
58         final boolean batterySaver = mPowerManager.isPowerSaveMode();
59         mPreference.setEnabled(!batterySaver);
60         mCurrentMode =
61                 mUiModeManager.getNightMode() == UiModeManager.MODE_NIGHT_AUTO
62                 ? mContext.getString(R.string.dark_ui_auto_mode_auto)
63                 : mContext.getString(R.string.dark_ui_auto_mode_never);
64         mPreference.setValue(mCurrentMode);
65     }
66     @Override
onPreferenceChange(Preference preference, Object newValue)67     public final boolean onPreferenceChange(Preference preference, Object newValue) {
68         String newMode = (String) newValue;
69         if (newMode == mCurrentMode) {
70             return false;
71         }
72         mCurrentMode = newMode;
73         if (mCurrentMode == mContext.getString(R.string.dark_ui_auto_mode_never)) {
74             boolean active = (mContext.getResources().getConfiguration().uiMode
75                     & Configuration.UI_MODE_NIGHT_YES) != 0;
76             int mode = active ? UiModeManager.MODE_NIGHT_YES
77                     : UiModeManager.MODE_NIGHT_NO;
78             mUiModeManager.setNightMode(mode);
79 
80         } else if (mCurrentMode ==
81                 mContext.getString(R.string.dark_ui_auto_mode_auto)) {
82             mUiModeManager.setNightMode(UiModeManager.MODE_NIGHT_AUTO);
83         }
84         return true;
85     }
86 }
87