GPS.java

package net.sf.lab3f.gwt.gps.client;

import com.google.gwt.core.client.JavaScriptObject;
import com.google.gwt.user.client.Timer;
import com.google.gwt.user.client.Window;
import com.google.gwt.json.client.JSONArray;
import com.google.gwt.json.client.JSONObject;

import net.sf.lab3f.gwt.util.client.Util;
/*
import java.util.HashMap;
import java.util.Vector;

import com.google.gwt.core.client.GWT;

import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.DialogBox;
import com.google.gwt.user.client.ui.DisclosurePanel;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HTMLPanel;
import com.google.gwt.user.client.ui.HasHorizontalAlignment;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.Image;
import com.google.gwt.user.client.ui.Label;
import com.google.gwt.user.client.ui.RootPanel;
import com.google.gwt.user.client.ui.SimplePanel;
import com.google.gwt.user.client.ui.VerticalPanel;

import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.event.dom.client.KeyPressEvent;
import com.google.gwt.event.dom.client.KeyPressHandler;

import com.google.gwt.event.dom.client.LoadEvent;
import com.google.gwt.event.dom.client.LoadHandler;

import com.google.gwt.event.logical.shared.CloseHandler;
import com.google.gwt.event.logical.shared.CloseEvent;
import com.google.gwt.event.logical.shared.OpenHandler;
import com.google.gwt.event.logical.shared.OpenEvent;

import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;

import com.google.gwt.maps.client.InfoWindowContent;
import com.google.gwt.maps.client.MapOptions;
import com.google.gwt.maps.client.MapType;
import com.google.gwt.maps.client.MapWidget;
import com.google.gwt.maps.client.Maps;
import com.google.gwt.maps.client.geom.Point;
import com.google.gwt.maps.client.control.ControlAnchor;
import com.google.gwt.maps.client.control.ControlPosition;
import com.google.gwt.maps.client.control.SmallMapControl;
import com.google.gwt.maps.client.control.MapTypeControl;
import com.google.gwt.maps.client.event.MarkerClickHandler;
import com.google.gwt.maps.client.geom.LatLng;
import com.google.gwt.maps.client.geom.LatLngBounds;
import com.google.gwt.maps.client.geocode.Geocoder;
import com.google.gwt.maps.client.geocode.Placemark;
import com.google.gwt.maps.client.geocode.LocationCallback;
import com.google.gwt.maps.client.overlay.Icon;
import com.google.gwt.maps.client.overlay.Marker;
import com.google.gwt.maps.client.overlay.MarkerOptions;
import com.google.gwt.maps.client.overlay.Polyline;

import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.Response;

import com.google.gwt.xml.client.Document;
import com.google.gwt.xml.client.Element;
import com.google.gwt.xml.client.Node;
import com.google.gwt.xml.client.NodeList;
import com.google.gwt.xml.client.XMLParser;
*/

public class GPS {

 private static JSONArray data;	

 public final static JSONArray getData(){return data;}

 public final static void prepareData(){
  Util.xslt("gps", "gps.xml", "gps.xsl");
  (new Timer(){
   public void run(){
    String s = getRawGpsData();	   
    if(s.trim().length() == 0)return;
    int m = s.indexOf('[');
    int n = s.lastIndexOf(']') + 1;
    s = s.substring(m, n).replaceAll(",]", "]").replaceAll("\\s+", " ");
    data = new JSONObject(eval(s)).isArray();
    cancel();
   }	   
  }).scheduleRepeating(300);
 }

 private native static JavaScriptObject eval(String s)/*-{return eval(s);}-*/;	 

 private native static String getRawGpsData()/*-{
  return $doc.getElementById("gps").innerHTML;
 }-*/;	 
}