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.fuelgauge.batterysaver; 18 19 import static com.android.settingslib.fuelgauge.BatterySaverLogging.SAVER_ENABLED_SETTINGS; 20 21 import android.content.ContentResolver; 22 import android.content.Context; 23 import android.net.Uri; 24 import android.os.Handler; 25 import android.os.Looper; 26 import android.os.PowerManager; 27 import android.provider.SettingsSlicesContract; 28 29 import androidx.preference.PreferenceScreen; 30 31 import com.android.settings.R; 32 import com.android.settings.core.TogglePreferenceController; 33 import com.android.settings.fuelgauge.BatterySaverReceiver; 34 import com.android.settingslib.core.lifecycle.LifecycleObserver; 35 import com.android.settingslib.core.lifecycle.events.OnStart; 36 import com.android.settingslib.core.lifecycle.events.OnStop; 37 import com.android.settingslib.fuelgauge.BatterySaverUtils; 38 import com.android.settingslib.widget.MainSwitchPreference; 39 40 /** 41 * Controller to update the battery saver button 42 */ 43 public class BatterySaverButtonPreferenceController extends 44 TogglePreferenceController implements LifecycleObserver, OnStart, OnStop, 45 BatterySaverReceiver.BatterySaverListener { 46 private static final long SWITCH_ANIMATION_DURATION = 350L; 47 48 private final BatterySaverReceiver mBatterySaverReceiver; 49 private final PowerManager mPowerManager; 50 51 private Handler mHandler; 52 private MainSwitchPreference mPreference; 53 BatterySaverButtonPreferenceController(Context context, String key)54 public BatterySaverButtonPreferenceController(Context context, String key) { 55 super(context, key); 56 mPowerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 57 mBatterySaverReceiver = new BatterySaverReceiver(context); 58 mBatterySaverReceiver.setBatterySaverListener(this); 59 mHandler = new Handler(Looper.getMainLooper()); 60 } 61 62 @Override getAvailabilityStatus()63 public int getAvailabilityStatus() { 64 return AVAILABLE; 65 } 66 67 @Override isPublicSlice()68 public boolean isPublicSlice() { 69 return true; 70 } 71 72 @Override getSliceUri()73 public Uri getSliceUri() { 74 return new Uri.Builder() 75 .scheme(ContentResolver.SCHEME_CONTENT) 76 .authority(SettingsSlicesContract.AUTHORITY) 77 .appendPath(SettingsSlicesContract.PATH_SETTING_ACTION) 78 .appendPath(SettingsSlicesContract.KEY_BATTERY_SAVER) 79 .build(); 80 } 81 82 @Override onStart()83 public void onStart() { 84 mBatterySaverReceiver.setListening(true); 85 } 86 87 @Override onStop()88 public void onStop() { 89 mBatterySaverReceiver.setListening(false); 90 mHandler.removeCallbacksAndMessages(null /* token */); 91 } 92 93 @Override displayPreference(PreferenceScreen screen)94 public void displayPreference(PreferenceScreen screen) { 95 super.displayPreference(screen); 96 mPreference = screen.findPreference(getPreferenceKey()); 97 mPreference.updateStatus(isChecked()); 98 } 99 100 @Override isChecked()101 public boolean isChecked() { 102 return mPowerManager.isPowerSaveMode(); 103 } 104 105 @Override setChecked(boolean stateOn)106 public boolean setChecked(boolean stateOn) { 107 return BatterySaverUtils.setPowerSaveMode(mContext, stateOn, 108 false /* needFirstTimeWarning */, SAVER_ENABLED_SETTINGS); 109 } 110 111 @Override getSliceHighlightMenuRes()112 public int getSliceHighlightMenuRes() { 113 return R.string.menu_key_battery; 114 } 115 116 @Override onPowerSaveModeChanged()117 public void onPowerSaveModeChanged() { 118 mHandler.postDelayed(() -> onPowerSaveModeChangedInternal(), 119 SWITCH_ANIMATION_DURATION); 120 } 121 onPowerSaveModeChangedInternal()122 private void onPowerSaveModeChangedInternal() { 123 final boolean isChecked = isChecked(); 124 if (mPreference != null && mPreference.isChecked() != isChecked) { 125 mPreference.setChecked(isChecked); 126 } 127 } 128 129 @Override onBatteryChanged(boolean pluggedIn)130 public void onBatteryChanged(boolean pluggedIn) { 131 if (mPreference != null) { 132 mPreference.setEnabled(!pluggedIn); 133 } 134 } 135 } 136