1 /* 2 * Copyright (C) 2017 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.systemui.keyguard; 18 19 import android.os.Trace; 20 21 import com.android.systemui.Dumpable; 22 23 import java.io.FileDescriptor; 24 import java.io.PrintWriter; 25 26 /** 27 * Tracks the wakefulness lifecycle. 28 */ 29 public class WakefulnessLifecycle extends Lifecycle<WakefulnessLifecycle.Observer> implements 30 Dumpable { 31 32 public static final int WAKEFULNESS_ASLEEP = 0; 33 public static final int WAKEFULNESS_WAKING = 1; 34 public static final int WAKEFULNESS_AWAKE = 2; 35 public static final int WAKEFULNESS_GOING_TO_SLEEP = 3; 36 37 private int mWakefulness = WAKEFULNESS_ASLEEP; 38 39 public int getWakefulness() { 40 return mWakefulness; 41 } 42 43 public void dispatchStartedWakingUp() { 44 setWakefulness(WAKEFULNESS_WAKING); 45 dispatch(Observer::onStartedWakingUp); 46 } 47 48 public void dispatchFinishedWakingUp() { 49 setWakefulness(WAKEFULNESS_AWAKE); 50 dispatch(Observer::onFinishedWakingUp); 51 } 52 53 public void dispatchStartedGoingToSleep() { 54 setWakefulness(WAKEFULNESS_GOING_TO_SLEEP); 55 dispatch(Observer::onStartedGoingToSleep); 56 } 57 58 public void dispatchFinishedGoingToSleep() { 59 setWakefulness(WAKEFULNESS_ASLEEP); 60 dispatch(Observer::onFinishedGoingToSleep); 61 } 62 63 @Override 64 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 65 pw.println("WakefulnessLifecycle:"); 66 pw.println(" mWakefulness=" + mWakefulness); 67 } 68 69 private void setWakefulness(int wakefulness) { 70 mWakefulness = wakefulness; 71 Trace.traceCounter(Trace.TRACE_TAG_APP, "wakefulness", wakefulness); 72 } 73 74 public interface Observer { 75 default void onStartedWakingUp() {} 76 default void onFinishedWakingUp() {} 77 default void onStartedGoingToSleep() {} 78 default void onFinishedGoingToSleep() {} 79 } 80 } 81