PassiveProvider.java revision 09016ab4dd056a16809419d612cb865a14980880 
1/*
2 * Copyright (C) 2010 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
17package com.android.server.location;
18
19import java.io.FileDescriptor;
20import java.io.PrintWriter;
21
22import com.android.internal.location.ProviderProperties;
23import com.android.internal.location.ProviderRequest;
24
25import android.location.Criteria;
26import android.location.ILocationManager;
27import android.location.Location;
28import android.location.LocationManager;
29import android.location.LocationProvider;
30import android.os.Bundle;
31import android.os.RemoteException;
32import android.os.WorkSource;
33import android.util.Log;
34
35
36/**
37 * A passive location provider reports locations received from other providers
38 * for clients that want to listen passively without actually triggering
39 * location updates.
40 *
41 * {@hide}
42 */
43public class PassiveProvider implements LocationProviderInterface {
44    private static final String TAG = "PassiveProvider";
45
46    private static final ProviderProperties PROPERTIES = new ProviderProperties(
47            false, false, false, false, false, false, false,
48            Criteria.POWER_LOW, Criteria.ACCURACY_COARSE);
49
50    private final ILocationManager mLocationManager;
51    private boolean mReportLocation;
52
53    public PassiveProvider(ILocationManager locationManager) {
54        mLocationManager = locationManager;
55    }
56
57    @Override
58    public String getName() {
59        return LocationManager.PASSIVE_PROVIDER;
60    }
61
62    @Override
63    public ProviderProperties getProperties() {
64        return PROPERTIES;
65    }
66
67    @Override
68    public boolean isEnabled() {
69        return true;
70    }
71
72    @Override
73    public void enable() {
74    }
75
76    @Override
77    public void disable() {
78    }
79
80    @Override
81    public int getStatus(Bundle extras) {
82        if (mReportLocation) {
83            return LocationProvider.AVAILABLE;
84        } else {
85            return LocationProvider.TEMPORARILY_UNAVAILABLE;
86        }
87    }
88
89    @Override
90    public long getStatusUpdateTime() {
91        return -1;
92    }
93
94    @Override
95    public void setRequest(ProviderRequest request, WorkSource source) {
96        mReportLocation = request.reportLocation;
97    }
98
99    public void updateLocation(Location location) {
100        if (mReportLocation) {
101            try {
102                // pass the location back to the location manager
103                mLocationManager.reportLocation(location, true);
104            } catch (RemoteException e) {
105                Log.e(TAG, "RemoteException calling reportLocation");
106            }
107        }
108    }
109
110    @Override
111    public boolean sendExtraCommand(String command, Bundle extras) {
112        return false;
113    }
114
115    @Override
116    public void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
117        pw.println("mReportLocation=" + mReportLocation);
118    }
119}
120