| /* |
| * Copyright (C) 2014 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.server.policy; |
| |
| import android.os.Handler; |
| import android.content.Context; |
| import android.hardware.Sensor; |
| import android.hardware.SensorManager; |
| import android.hardware.TriggerEvent; |
| import android.hardware.TriggerEventListener; |
| |
| import java.io.PrintWriter; |
| |
| /** |
| * Watches for wake gesture sensor events then invokes the listener. |
| */ |
| public abstract class WakeGestureListener { |
| private static final String TAG = "WakeGestureListener"; |
| |
| private final SensorManager mSensorManager; |
| private final Handler mHandler; |
| |
| private final Object mLock = new Object(); |
| |
| private boolean mTriggerRequested; |
| private Sensor mSensor; |
| |
| public WakeGestureListener(Context context, Handler handler) { |
| mSensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE); |
| mHandler = handler; |
| |
| mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_WAKE_GESTURE); |
| } |
| |
| public abstract void onWakeUp(); |
| |
| public boolean isSupported() { |
| synchronized (mLock) { |
| return mSensor != null; |
| } |
| } |
| |
| public void requestWakeUpTrigger() { |
| synchronized (mLock) { |
| if (mSensor != null && !mTriggerRequested) { |
| mTriggerRequested = true; |
| mSensorManager.requestTriggerSensor(mListener, mSensor); |
| } |
| } |
| } |
| |
| public void cancelWakeUpTrigger() { |
| synchronized (mLock) { |
| if (mSensor != null && mTriggerRequested) { |
| mTriggerRequested = false; |
| mSensorManager.cancelTriggerSensor(mListener, mSensor); |
| } |
| } |
| } |
| |
| public void dump(PrintWriter pw, String prefix) { |
| synchronized (mLock) { |
| pw.println(prefix + TAG); |
| prefix += " "; |
| pw.println(prefix + "mTriggerRequested=" + mTriggerRequested); |
| pw.println(prefix + "mSensor=" + mSensor); |
| } |
| } |
| |
| private final TriggerEventListener mListener = new TriggerEventListener() { |
| @Override |
| public void onTrigger(TriggerEvent event) { |
| synchronized (mLock) { |
| mTriggerRequested = false; |
| mHandler.post(mWakeUpRunnable); |
| } |
| } |
| }; |
| |
| private final Runnable mWakeUpRunnable = new Runnable() { |
| @Override |
| public void run() { |
| onWakeUp(); |
| } |
| }; |
| } |