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.display; 18 19 import android.app.UiModeManager; 20 import android.content.BroadcastReceiver; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.content.IntentFilter; 24 import android.content.res.Configuration; 25 import android.os.PowerManager; 26 27 import androidx.annotation.VisibleForTesting; 28 import androidx.preference.Preference; 29 import androidx.preference.PreferenceScreen; 30 31 import com.android.settings.R; 32 import com.android.settings.core.TogglePreferenceController; 33 import com.android.settingslib.core.lifecycle.LifecycleObserver; 34 import com.android.settingslib.core.lifecycle.events.OnStart; 35 import com.android.settingslib.core.lifecycle.events.OnStop; 36 37 // LINT.IfChange 38 public class DarkUIPreferenceController extends TogglePreferenceController implements 39 LifecycleObserver, OnStart, OnStop { 40 41 public static final String PREF_DARK_MODE_DIALOG_SEEN = "dark_mode_dialog_seen"; 42 public static final int DIALOG_SEEN = 1; 43 44 @VisibleForTesting 45 Preference mPreference; 46 47 private UiModeManager mUiModeManager; 48 private PowerManager mPowerManager; 49 50 private BroadcastReceiver mReceiver = new BroadcastReceiver() { 51 @Override 52 public void onReceive(Context context, Intent intent) { 53 updateEnabledStateIfNeeded(); 54 } 55 }; 56 DarkUIPreferenceController(Context context, String key)57 public DarkUIPreferenceController(Context context, String key) { 58 super(context, key); 59 mUiModeManager = context.getSystemService(UiModeManager.class); 60 mPowerManager = context.getSystemService(PowerManager.class); 61 } 62 63 @Override isChecked()64 public boolean isChecked() { 65 return (mContext.getResources().getConfiguration().uiMode 66 & Configuration.UI_MODE_NIGHT_YES) != 0; 67 } 68 69 @Override displayPreference(PreferenceScreen screen)70 public void displayPreference(PreferenceScreen screen) { 71 super.displayPreference(screen); 72 mPreference = screen.findPreference(getPreferenceKey()); 73 } 74 75 @Override updateState(Preference preference)76 public void updateState(Preference preference) { 77 super.updateState(preference); 78 updateEnabledStateIfNeeded(); 79 } 80 81 @Override setChecked(boolean isChecked)82 public boolean setChecked(boolean isChecked) { 83 return mUiModeManager.setNightModeActivated(isChecked); 84 } 85 86 @Override getSliceHighlightMenuRes()87 public int getSliceHighlightMenuRes() { 88 return R.string.menu_key_display; 89 } 90 91 @VisibleForTesting updateEnabledStateIfNeeded()92 void updateEnabledStateIfNeeded() { 93 if (mPreference == null) { 94 return; 95 } 96 boolean isBatterySaver = isPowerSaveMode(); 97 mPreference.setEnabled(!isBatterySaver); 98 if (isBatterySaver) { 99 int stringId = isChecked() 100 ? R.string.dark_ui_mode_disabled_summary_dark_theme_on 101 : R.string.dark_ui_mode_disabled_summary_dark_theme_off; 102 mPreference.setSummary(mContext.getString(stringId)); 103 } 104 } 105 106 @VisibleForTesting isPowerSaveMode()107 boolean isPowerSaveMode() { 108 return mPowerManager.isPowerSaveMode(); 109 } 110 111 @Override onStart()112 public void onStart() { 113 mContext.registerReceiver(mReceiver, 114 new IntentFilter(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED)); 115 } 116 117 @Override onStop()118 public void onStop() { 119 mContext.unregisterReceiver(mReceiver); 120 } 121 122 @Override getAvailabilityStatus()123 public int getAvailabilityStatus() { 124 return AVAILABLE; 125 } 126 } 127 // LINT.ThenChange(darkmode/DarkModeScreen.kt) 128