| /* |
| * 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.telecom; |
| |
| import android.content.Context; |
| import android.os.PowerManager; |
| |
| /** |
| * This class manages the proximity sensor and allows callers to turn it on and off. |
| */ |
| public class ProximitySensorManager extends CallsManagerListenerBase { |
| private static final String TAG = ProximitySensorManager.class.getSimpleName(); |
| |
| private final PowerManager.WakeLock mProximityWakeLock; |
| |
| public ProximitySensorManager(Context context) { |
| PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); |
| |
| if (pm.isWakeLockLevelSupported(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK)) { |
| mProximityWakeLock = pm.newWakeLock( |
| PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, TAG); |
| } else { |
| mProximityWakeLock = null; |
| } |
| Log.d(this, "onCreate: mProximityWakeLock: ", mProximityWakeLock); |
| } |
| |
| @Override |
| public void onCallRemoved(Call call) { |
| if (CallsManager.getInstance().getCalls().isEmpty()) { |
| Log.v(this, "all calls removed, resetting proximity sensor to default state"); |
| turnOff(true); |
| } |
| super.onCallRemoved(call); |
| } |
| |
| /** |
| * Turn the proximity sensor on. |
| */ |
| void turnOn() { |
| if (CallsManager.getInstance().getCalls().isEmpty()) { |
| Log.w(this, "Asking to turn on prox sensor without a call? I don't think so."); |
| return; |
| } |
| |
| if (mProximityWakeLock == null) { |
| return; |
| } |
| if (!mProximityWakeLock.isHeld()) { |
| Log.i(this, "Acquiring proximity wake lock"); |
| mProximityWakeLock.acquire(); |
| } else { |
| Log.i(this, "Proximity wake lock already acquired"); |
| } |
| } |
| |
| /** |
| * Turn the proximity sensor off. |
| * @param screenOnImmediately |
| */ |
| void turnOff(boolean screenOnImmediately) { |
| if (mProximityWakeLock == null) { |
| return; |
| } |
| if (mProximityWakeLock.isHeld()) { |
| Log.i(this, "Releasing proximity wake lock"); |
| int flags = |
| (screenOnImmediately ? 0 : PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY); |
| mProximityWakeLock.release(flags); |
| } else { |
| Log.i(this, "Proximity wake lock already released"); |
| } |
| } |
| } |