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.location.Location;
21 import android.os.AsyncTask;
22 import com.android.dialer.common.LogUtil;
23 import com.android.dialer.logging.DialerImpression;
24 import com.android.dialer.logging.Logger;
25 import com.android.incallui.baseui.Presenter;
26 import com.android.incallui.baseui.Ui;
27 import com.google.android.gms.location.LocationListener;
28 import java.lang.ref.WeakReference;
29 import java.util.Objects;
30 
31 /**
32  * Presenter for the {@code LocationFragment}.
33  *
34  * <p>Performs lookup for the address and map image to show.
35  */
36 public class LocationPresenter extends Presenter<LocationPresenter.LocationUi>
37     implements LocationListener {
38 
39   private Location lastLocation;
40   private AsyncTask reverseGeocodeTask;
41 
LocationPresenter()42   LocationPresenter() {}
43 
44   @Override
onUiReady(LocationUi ui)45   public void onUiReady(LocationUi ui) {
46     LogUtil.i("LocationPresenter.onUiReady", "");
47     super.onUiReady(ui);
48     updateLocation(lastLocation, true);
49   }
50 
51   @Override
onUiUnready(LocationUi ui)52   public void onUiUnready(LocationUi ui) {
53     LogUtil.i("LocationPresenter.onUiUnready", "");
54     super.onUiUnready(ui);
55 
56     if (reverseGeocodeTask != null) {
57       reverseGeocodeTask.cancel(true);
58     }
59   }
60 
61   @Override
onLocationChanged(Location location)62   public void onLocationChanged(Location location) {
63     LogUtil.i("LocationPresenter.onLocationChanged", "");
64     updateLocation(location, false);
65   }
66 
updateLocation(Location location, boolean forceUpdate)67   private void updateLocation(Location location, boolean forceUpdate) {
68     LogUtil.i("LocationPresenter.updateLocation", "location: " + location);
69     if (forceUpdate || !Objects.equals(lastLocation, location)) {
70       lastLocation = location;
71       int status = LocationHelper.checkLocation(location);
72       LocationUi ui = getUi();
73       if (status == LocationHelper.LOCATION_STATUS_OK) {
74         reverseGeocodeTask = new ReverseGeocodeTask(new WeakReference<>(ui)).execute(location);
75         if (ui != null) {
76           ui.setLocation(location);
77         } else {
78           LogUtil.i("LocationPresenter.updateLocation", "no Ui");
79         }
80       } else if (status != LocationHelper.LOCATION_STATUS_NO_LOCATION) {
81         // Log impression indicating why the location is not valid
82         // Note: its possible for this to be called before the UI has been initialized.
83         Context context = (ui != null) ? ui.getContext() : null;
84         if (context != null) {
85           if (status == LocationHelper.LOCATION_STATUS_STALE) {
86             Logger.get(context).logImpression(DialerImpression.Type.EMERGENCY_STALE_LOCATION);
87           } else if (status == LocationHelper.LOCATION_STATUS_INACCURATE) {
88             Logger.get(context).logImpression(DialerImpression.Type.EMERGENCY_INACCURATE_LOCATION);
89           }
90         }
91       }
92     }
93   }
94 
95   /** UI interface */
96   public interface LocationUi extends Ui {
97 
setAddress(String address)98     void setAddress(String address);
99 
setLocation(Location location)100     void setLocation(Location location);
101 
getContext()102     Context getContext();
103   }
104 }
105