001: /*
002: *
003: *
004: * Copyright 1990-2007 Sun Microsystems, Inc. All Rights Reserved.
005: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
006: *
007: * This program is free software; you can redistribute it and/or
008: * modify it under the terms of the GNU General Public License version
009: * 2 only, as published by the Free Software Foundation.
010: *
011: * This program is distributed in the hope that it will be useful, but
012: * WITHOUT ANY WARRANTY; without even the implied warranty of
013: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014: * General Public License version 2 for more details (a copy is
015: * included at /legal/license.txt).
016: *
017: * You should have received a copy of the GNU General Public License
018: * version 2 along with this work; if not, write to the Free Software
019: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
020: * 02110-1301 USA
021: *
022: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
023: * Clara, CA 95054 or visit www.sun.com if you need additional
024: * information or have any questions.
025: */
026:
027: package javax.microedition.location;
028:
029: import java.util.*;
030: import com.sun.midp.security.Permissions;
031: import com.sun.midp.main.*;
032: import com.sun.j2me.location.*;
033:
034: /**
035: * This class is defined by the JSR-179 specification
036: * <em>Location API for J2ME for J2ME™.</em>
037: */
038: // JAVADOC COMMENT ELIDED
039: public abstract class LocationProvider {
040:
041: /** Proximity support property */
042: private static final String PROXIMITY_SUPPORTED = "com.sun.j2me.location.ProximitySupported";
043:
044: // JAVADOC COMMENT ELIDED
045: public final static int AVAILABLE = 1;
046:
047: // JAVADOC COMMENT ELIDED
048: public final static int TEMPORARILY_UNAVAILABLE = 2;
049:
050: // JAVADOC COMMENT ELIDED
051: public final static int OUT_OF_SERVICE = 3;
052:
053: // JAVADOC COMMENT ELIDED
054: protected LocationProvider() {
055: }
056:
057: // JAVADOC COMMENT ELIDED
058: public abstract int getState();
059:
060: // JAVADOC COMMENT ELIDED
061: public static LocationProvider getInstance(Criteria criteria)
062: throws LocationException {
063: return LocationProviderImpl.getInstanceImpl(criteria);
064: }
065:
066: // JAVADOC COMMENT ELIDED
067: public abstract Location getLocation(int timeout)
068: throws LocationException, InterruptedException;
069:
070: // JAVADOC COMMENT ELIDED
071: public abstract void setLocationListener(LocationListener listener,
072: int interval, int timeout, int maxAge);
073:
074: // JAVADOC COMMENT ELIDED
075: public abstract void reset();
076:
077: // JAVADOC COMMENT ELIDED
078: public static Location getLastKnownLocation() {
079: Util.checkForPermission(Permissions.LOCATION, false);
080: return LocationProviderImpl.getLastKnownLocation();
081: }
082:
083: // JAVADOC COMMENT ELIDED
084: public static void addProximityListener(ProximityListener listener,
085: Coordinates coordinates, float proximityRadius)
086: throws LocationException {
087: String proximitySupported = Configuration
088: .getProperty(PROXIMITY_SUPPORTED);
089: if (proximitySupported.equals("true")) {
090: Util.checkForPermission(Permissions.LOCATION_PROXIMITY,
091: false);
092: if (listener == null || coordinates == null) {
093: throw new NullPointerException();
094: }
095: if (proximityRadius <= 0.0F || Float.isNaN(proximityRadius)) {
096: throw new IllegalArgumentException(
097: "Illegal proximityRadius: " + proximityRadius);
098: }
099: ProximityNotifier.getInstance().addProximityListener(
100: listener, coordinates, proximityRadius);
101: } else {
102: throw new LocationException(
103: "Proximity monitoring is not supported");
104: }
105: }
106:
107: // JAVADOC COMMENT ELIDED
108: public static void removeProximityListener(
109: ProximityListener listener) {
110: if (listener == null) {
111: throw new NullPointerException("Proximity listener is null");
112: }
113: ProximityNotifier.getInstance().removeProximityListener(
114: listener);
115: }
116:
117: }
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