1 /* 2 * Copyright (C) 2016 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.car.systeminterface; 18 19 import android.content.Context; 20 import android.os.PowerManager; 21 import android.os.PowerManager.WakeLock; 22 import com.android.car.CarLog; 23 24 /** 25 * Interface that abstracts wake lock operations 26 */ 27 public interface WakeLockInterface { releaseAllWakeLocks()28 void releaseAllWakeLocks(); switchToPartialWakeLock()29 void switchToPartialWakeLock(); switchToFullWakeLock()30 void switchToFullWakeLock(); 31 32 class DefaultImpl implements WakeLockInterface { 33 private final WakeLock mPartialWakeLock; 34 private final WakeLock mFullWakeLock; 35 DefaultImpl(Context context)36 DefaultImpl(Context context) { 37 PowerManager powerManager = 38 (PowerManager) context.getSystemService(Context.POWER_SERVICE); 39 mFullWakeLock = powerManager.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, 40 CarLog.TAG_POWER); 41 mPartialWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 42 CarLog.TAG_POWER); 43 } 44 45 @Override switchToPartialWakeLock()46 public void switchToPartialWakeLock() { 47 if (!mPartialWakeLock.isHeld()) { 48 mPartialWakeLock.acquire(); 49 } 50 if (mFullWakeLock.isHeld()) { 51 mFullWakeLock.release(); 52 } 53 } 54 55 @Override switchToFullWakeLock()56 public void switchToFullWakeLock() { 57 if (!mFullWakeLock.isHeld()) { 58 mFullWakeLock.acquire(); 59 } 60 if (mPartialWakeLock.isHeld()) { 61 mPartialWakeLock.release(); 62 } 63 } 64 65 @Override releaseAllWakeLocks()66 public void releaseAllWakeLocks() { 67 if (mPartialWakeLock.isHeld()) { 68 mPartialWakeLock.release(); 69 } 70 if (mFullWakeLock.isHeld()) { 71 mFullWakeLock.release(); 72 } 73 } 74 } 75 } 76