| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.systemui.keyguard; |
| |
| import android.os.Trace; |
| |
| import com.android.systemui.Dumpable; |
| |
| import java.io.FileDescriptor; |
| import java.io.PrintWriter; |
| |
| /** |
| * Tracks the screen lifecycle. |
| */ |
| public class ScreenLifecycle extends Lifecycle<ScreenLifecycle.Observer> implements Dumpable { |
| |
| public static final int SCREEN_OFF = 0; |
| public static final int SCREEN_TURNING_ON = 1; |
| public static final int SCREEN_ON = 2; |
| public static final int SCREEN_TURNING_OFF = 3; |
| |
| private int mScreenState = SCREEN_OFF; |
| |
| public int getScreenState() { |
| return mScreenState; |
| } |
| |
| public void dispatchScreenTurningOn() { |
| setScreenState(SCREEN_TURNING_ON); |
| dispatch(Observer::onScreenTurningOn); |
| } |
| |
| public void dispatchScreenTurnedOn() { |
| setScreenState(SCREEN_ON); |
| dispatch(Observer::onScreenTurnedOn); |
| } |
| |
| public void dispatchScreenTurningOff() { |
| setScreenState(SCREEN_TURNING_OFF); |
| dispatch(Observer::onScreenTurningOff); |
| } |
| |
| public void dispatchScreenTurnedOff() { |
| setScreenState(SCREEN_OFF); |
| dispatch(Observer::onScreenTurnedOff); |
| } |
| |
| @Override |
| public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| pw.println("ScreenLifecycle:"); |
| pw.println(" mScreenState=" + mScreenState); |
| } |
| |
| private void setScreenState(int screenState) { |
| mScreenState = screenState; |
| Trace.traceCounter(Trace.TRACE_TAG_APP, "screenState", screenState); |
| } |
| |
| public interface Observer { |
| default void onScreenTurningOn() {} |
| default void onScreenTurnedOn() {} |
| default void onScreenTurningOff() {} |
| default void onScreenTurnedOff() {} |
| } |
| |
| } |