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.incallui.calllocation.impl;
18 
19 import android.content.Context;
20 import android.support.annotation.MainThread;
21 import android.support.annotation.NonNull;
22 import android.support.v4.app.Fragment;
23 import com.android.dialer.common.Assert;
24 import com.android.incallui.calllocation.CallLocation;
25 import javax.inject.Inject;
26 
27 /** Uses Google Play Services to show the user's location during an emergency call. */
28 public class CallLocationImpl implements CallLocation {
29 
30   private LocationHelper locationHelper;
31   private LocationFragment locationFragment;
32 
33   @Inject
CallLocationImpl()34   public CallLocationImpl() {}
35 
36   @MainThread
37   @Override
canGetLocation(@onNull Context context)38   public boolean canGetLocation(@NonNull Context context) {
39     Assert.isMainThread();
40     return LocationHelper.canGetLocation(context);
41   }
42 
43   @MainThread
44   @NonNull
45   @Override
getLocationFragment(@onNull Context context)46   public Fragment getLocationFragment(@NonNull Context context) {
47     Assert.isMainThread();
48     if (locationFragment == null) {
49       locationFragment = new LocationFragment();
50       locationHelper = new LocationHelper(context);
51       locationHelper.addLocationListener(locationFragment.getPresenter());
52     }
53     return locationFragment;
54   }
55 
56   @MainThread
57   @Override
close()58   public void close() {
59     Assert.isMainThread();
60     if (locationFragment != null) {
61       locationHelper.removeLocationListener(locationFragment.getPresenter());
62       locationHelper.close();
63       locationFragment = null;
64       locationHelper = null;
65     }
66   }
67 }
68