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