2 * Copyright (C) 2018 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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
17 package com.android.settings.display;
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.os.PowerManager;
25 import android.provider.Settings;
27 import androidx.annotation.VisibleForTesting;
28 import androidx.fragment.app.Fragment;
29 import androidx.preference.Preference;
30 import androidx.preference.PreferenceScreen;
31 import androidx.preference.SwitchPreference;
33 import com.android.settings.R;
34 import com.android.settings.core.TogglePreferenceController;
35 import com.android.settingslib.core.lifecycle.LifecycleObserver;
36 import com.android.settingslib.core.lifecycle.events.OnStart;
37 import com.android.settingslib.core.lifecycle.events.OnStop;
39 public class DarkUIPreferenceController extends TogglePreferenceController implements
40 LifecycleObserver, OnStart, OnStop {
42 public static final String DARK_MODE_PREFS = "dark_mode_prefs";
43 public static final String PREF_DARK_MODE_DIALOG_SEEN = "dark_mode_dialog_seen";
44 public static final int DIALOG_SEEN = 1;
47 SwitchPreference mPreference;
49 private UiModeManager mUiModeManager;
50 private PowerManager mPowerManager;
51 private Context mContext;
53 private Fragment mFragment;
55 private BroadcastReceiver mReceiver = new BroadcastReceiver() {
57 public void onReceive(Context context, Intent intent) {
58 updateEnabledStateIfNeeded();
62 public DarkUIPreferenceController(Context context, String key) {
65 mUiModeManager = context.getSystemService(UiModeManager.class);
66 mPowerManager = context.getSystemService(PowerManager.class);
70 public boolean isChecked() {
71 return mUiModeManager.getNightMode() == UiModeManager.MODE_NIGHT_YES;
75 public void displayPreference(PreferenceScreen screen) {
76 super.displayPreference(screen);
77 mPreference = screen.findPreference(getPreferenceKey());
81 public void updateState(Preference preference) {
82 super.updateState(preference);
83 updateEnabledStateIfNeeded();
87 public boolean setChecked(boolean isChecked) {
88 final boolean dialogSeen =
89 Settings.Secure.getInt(mContext.getContentResolver(),
90 Settings.Secure.DARK_MODE_DIALOG_SEEN, 0) == DIALOG_SEEN;
91 if (!dialogSeen && isChecked) {
95 mUiModeManager.setNightMode(isChecked
96 ? UiModeManager.MODE_NIGHT_YES
97 : UiModeManager.MODE_NIGHT_NO);
101 private void showDarkModeDialog() {
102 final DarkUIInfoDialogFragment frag = new DarkUIInfoDialogFragment();
103 if (mFragment.getFragmentManager() != null) {
104 frag.show(mFragment.getFragmentManager(), getClass().getName());
109 void updateEnabledStateIfNeeded() {
110 if (mPreference == null) {
113 boolean isBatterySaver = isPowerSaveMode();
114 mPreference.setEnabled(!isBatterySaver);
115 if (isBatterySaver) {
116 int stringId = mUiModeManager.getNightMode() == UiModeManager.MODE_NIGHT_YES
117 ? R.string.dark_ui_mode_disabled_summary_dark_theme_on
118 : R.string.dark_ui_mode_disabled_summary_dark_theme_off;
119 mPreference.setSummary(mContext.getString(stringId));
121 mPreference.setSummary(null);
126 boolean isPowerSaveMode() {
127 return mPowerManager.isPowerSaveMode();
132 void setUiModeManager(UiModeManager uiModeManager) {
133 mUiModeManager = uiModeManager;
136 public void setParentFragment(Fragment fragment) {
137 mFragment = fragment;
141 public void onStart() {
142 mContext.registerReceiver(mReceiver,
143 new IntentFilter(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED));
147 public void onStop() {
148 mContext.unregisterReceiver(mReceiver);
152 public int getAvailabilityStatus() {