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 23 import com.android.car.CarLog; 24 25 /** 26 * Interface that abstracts wake lock operations 27 */ 28 public interface WakeLockInterface { releaseAllWakeLocks()29 void releaseAllWakeLocks(); switchToPartialWakeLock()30 void switchToPartialWakeLock(); switchToFullWakeLock()31 void switchToFullWakeLock(); 32 33 class DefaultImpl implements WakeLockInterface { 34 private final WakeLock mPartialWakeLock; 35 private final WakeLock mFullWakeLock; 36 DefaultImpl(Context context)37 DefaultImpl(Context context) { 38 PowerManager powerManager = 39 (PowerManager) context.getSystemService(Context.POWER_SERVICE); 40 mFullWakeLock = powerManager.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, 41 CarLog.TAG_POWER); 42 mPartialWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, 43 CarLog.TAG_POWER); 44 } 45 46 @Override switchToPartialWakeLock()47 public void switchToPartialWakeLock() { 48 if (!mPartialWakeLock.isHeld()) { 49 mPartialWakeLock.acquire(); 50 } 51 if (mFullWakeLock.isHeld()) { 52 mFullWakeLock.release(); 53 } 54 } 55 56 @Override switchToFullWakeLock()57 public void switchToFullWakeLock() { 58 if (!mFullWakeLock.isHeld()) { 59 mFullWakeLock.acquire(); 60 } 61 if (mPartialWakeLock.isHeld()) { 62 mPartialWakeLock.release(); 63 } 64 } 65 66 @Override releaseAllWakeLocks()67 public void releaseAllWakeLocks() { 68 if (mPartialWakeLock.isHeld()) { 69 mPartialWakeLock.release(); 70 } 71 if (mFullWakeLock.isHeld()) { 72 mFullWakeLock.release(); 73 } 74 } 75 } 76 } 77