1/*
2 * Copyright (C) 2006 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 android.telephony;
18
19import android.os.Bundle;
20import android.os.RemoteException;
21import android.os.ServiceManager;
22import android.os.SystemProperties;
23import android.provider.Settings;
24
25
26import android.telephony.cdma.CdmaCellLocation;
27import android.telephony.gsm.GsmCellLocation;
28import com.android.internal.telephony.ITelephony;
29import com.android.internal.telephony.PhoneConstants;
30
31/**
32 * Abstract class that represents the location of the device.  {@more}
33 */
34public abstract class CellLocation {
35
36    /**
37     * Request an update of the current location.  If the location has changed,
38     * a broadcast will be sent to everyone registered with {@link
39     * PhoneStateListener#LISTEN_CELL_LOCATION}.
40     */
41    public static void requestLocationUpdate() {
42        try {
43            ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.getService("phone"));
44            if (phone != null) {
45                phone.updateServiceLocation();
46            }
47        } catch (RemoteException ex) {
48            // ignore it
49        }
50    }
51
52    /**
53     * Create a new CellLocation from a intent notifier Bundle
54     *
55     * This method is used by PhoneStateIntentReceiver and maybe by
56     * external applications.
57     *
58     * @param bundle Bundle from intent notifier
59     * @return newly created CellLocation
60     *
61     * @hide
62     */
63    public static CellLocation newFromBundle(Bundle bundle) {
64        // TelephonyManager.getDefault().getCurrentPhoneType() handles the case when
65        // ITelephony interface is not up yet.
66        switch(TelephonyManager.getDefault().getCurrentPhoneType()) {
67        case PhoneConstants.PHONE_TYPE_CDMA:
68            return new CdmaCellLocation(bundle);
69        case PhoneConstants.PHONE_TYPE_GSM:
70            return new GsmCellLocation(bundle);
71        default:
72            return null;
73        }
74    }
75
76    /**
77     * @hide
78     */
79    public abstract void fillInNotifierBundle(Bundle bundle);
80
81    /**
82     * @hide
83     */
84    public abstract boolean isEmpty();
85
86    /**
87     * Return a new CellLocation object representing an unknown
88     * location, or null for unknown/none phone radio types.
89     *
90     */
91    public static CellLocation getEmpty() {
92        // TelephonyManager.getDefault().getCurrentPhoneType() handles the case when
93        // ITelephony interface is not up yet.
94        switch(TelephonyManager.getDefault().getCurrentPhoneType()) {
95        case PhoneConstants.PHONE_TYPE_CDMA:
96            return new CdmaCellLocation();
97        case PhoneConstants.PHONE_TYPE_GSM:
98            return new GsmCellLocation();
99        default:
100            return null;
101        }
102    }
103}
104