GLatLng.java

/*
 * 
 * ==============================================================================
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package wicket.contrib.gmap3.api;

import wicket.contrib.gmap3.js.Constructor;

import java.util.StringTokenizer;

/**
 * Represents an Google Maps API's <a href=
 * "http://code.google.com/apis/maps/documentation/javascript/reference.html#LatLng" >LatLng</a>.
 */
public class GLatLng implements GValue {
    /**
     * Default serialVersionUID.
     */
    private static final long serialVersionUID = 1L;
    private final double _lat;
    private final double _lng;
    private final boolean _unbounded;

    /**
     * Construct.
     * 
     * @param lat
     * @param lng
     */
    public GLatLng(double lat, double lng) {
        this(lat, lng, false);
    }

    /**
     * Construct.
     * 
     * @param lat
     * @param lng
     * @param unbounded
     */
    public GLatLng(double lat, double lng, boolean unbounded) {
        _lat = lat;
        _lng = lng;
        _unbounded = unbounded;
    }

    public double getLat() {
        return _lat;
    }

    public double getLng() {
        return _lng;
    }

    @Override
    public String toString() {
        return getJSconstructor();
    }

    /**
     * @see wicket.contrib.gmap.api.GValue#getJSconstructor()
     */
    @Override
    public String getJSconstructor() {
        return new Constructor("google.maps.LatLng").add(Double.valueOf(_lat)).add(Double.valueOf(_lng))
                .add(Boolean.valueOf(_unbounded)).toJS();
    }

    @Override
    public int hashCode() {
        final int PRIME = 31;
        int result = super.hashCode();
        long temp;
        temp = Double.doubleToLongBits(_lat);
        result = PRIME * result + (int)(temp ^ (temp >>> 32));
        temp = Double.doubleToLongBits(_lng);
        result = PRIME * result + (int)(temp ^ (temp >>> 32));
        result = PRIME * result + (_unbounded ? 1231 : 1237);
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (super.equals(obj)) {
            return true;
        }
        if (getClass() != obj.getClass()) {
            return false;
        }
        final GLatLng other = (GLatLng)obj;
        if (Double.doubleToLongBits(_lat) != Double.doubleToLongBits(other._lat)) {
            return false;
        }
        if (Double.doubleToLongBits(_lng) != Double.doubleToLongBits(other._lng)) {
            return false;
        }
        if (_unbounded != other._unbounded) {
            return false;
        }
        return true;
    }

    /**
     * (37.34068368469045, -122.48519897460936)
     */
    public static GLatLng parse(String value) {
        try {
            StringTokenizer tokenizer = new StringTokenizer(value, "(, )");

            float lat = Float.valueOf(tokenizer.nextToken());
            float lng = Float.valueOf(tokenizer.nextToken());
            return new GLatLng(lat, lng);
        } catch (Exception e) {
            return null;
        }
    }
}