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      1 /*
      2  * Copyright (C) 2014 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.server.telecom;
     18 
     19 import android.content.Context;
     20 import android.os.PowerManager;
     21 import android.telecom.Log;
     22 
     23 import com.android.internal.annotations.VisibleForTesting;
     24 
     25 /**
     26  * This class manages the proximity sensor and allows callers to turn it on and off.
     27  */
     28 public class ProximitySensorManager extends CallsManagerListenerBase {
     29 
     30     private final CallsManager mCallsManager;
     31     private final TelecomWakeLock mTelecomWakeLock;
     32 
     33     public ProximitySensorManager(TelecomWakeLock telecomWakeLock, CallsManager callsManager) {
     34 
     35         mTelecomWakeLock = telecomWakeLock;
     36         mCallsManager = callsManager;
     37         Log.d(this, "onCreate: mProximityWakeLock: ", mTelecomWakeLock);
     38     }
     39 
     40     @Override
     41     public void onCallRemoved(Call call) {
     42         if (call.isExternalCall()) {
     43             return;
     44         }
     45         if (mCallsManager.getCalls().isEmpty()) {
     46             Log.i(this, "All calls removed, resetting proximity sensor to default state");
     47             turnOff(true);
     48         }
     49         super.onCallRemoved(call);
     50     }
     51 
     52     /**
     53      * Turn the proximity sensor on.
     54      */
     55     @VisibleForTesting
     56     public void turnOn() {
     57         if (mCallsManager.getCalls().isEmpty()) {
     58             Log.w(this, "Asking to turn on prox sensor without a call? I don't think so.");
     59             return;
     60         }
     61 
     62         mTelecomWakeLock.acquire();
     63     }
     64 
     65     /**
     66      * Turn the proximity sensor off.
     67      * @param screenOnImmediately
     68      */
     69     @VisibleForTesting
     70     public void turnOff(boolean screenOnImmediately) {
     71         int flags = (screenOnImmediately ? 0 : PowerManager.RELEASE_FLAG_WAIT_FOR_NO_PROXIMITY);
     72         mTelecomWakeLock.release(flags);
     73     }
     74 }
     75