/* $Id$ */

var baseIcon=new Array();
 
function gmap_init() {
  baseIcon['standard'] = new GIcon();
  baseIcon['standard'].image = "http://www.google.com/mapfiles/marker.png";
  baseIcon['standard'].shadow = "http://www.google.com/mapfiles/shadow50.png"
  baseIcon['standard'].iconSize = new GSize(20, 34);
  baseIcon['standard'].shadowSize = new GSize(37, 34);
  baseIcon['standard'].iconAnchor = new GPoint(9, 34);
  baseIcon['standard'].infoWindowAnchor = new GPoint(9, 2);
  baseIcon['standard'].infoShadowAnchor = new GPoint(18, 25);
   
  baseIcon['big']=new GIcon();
  baseIcon['big'].image='modules/gmap/markers/big/blue.png';
  baseIcon['big'].shadow='modules/gmap/markers/big/shadow.png';
  baseIcon['big'].iconsize=new GSize(30,51);
  baseIcon['big'].shadowSize=new GSize(56,51);
  baseIcon['big'].iconAnchor=new GPoint(13,34);
  baseIcon['big'].infoWindowAnchor=new GPoint(13,3);
  baseIcon['big'].infoShadowAnchor=new GPoint(27,37);
   
  baseIcon['small'] = new GIcon();
  baseIcon['small'].image = "modules/gmap/markers/small/red.png";
  baseIcon['small'].shadow = "modules/gmap/markers/small/shadow.png";
  baseIcon['small'].iconSize = new GSize(12, 20);
  baseIcon['small'].shadowSize = new GSize(22, 20);
  baseIcon['small'].iconAnchor = new GPoint(6, 20);
  baseIcon['small'].infoWindowAnchor = new GPoint(5, 1);
  
  baseIcon['flat'] = new GIcon();
  baseIcon['flat'].image = "modules/gmap/markers/flat/x.png";
  baseIcon['flat'].shadow = "";
  baseIcon['flat'].iconSize = new GSize(16, 16);
  baseIcon['flat'].shadowSize = new GSize(0, 0);
  baseIcon['flat'].iconAnchor = new GPoint(8, 8);
  baseIcon['flat'].infoWindowAnchor = new GPoint(8, 8);

}

function createGMarker(point, htmltext, marker) {
  if (marker.length >0) {
    var re = /markers\/([a-zA-Z0-9]+)\//;
    var m = re.exec(marker);
    var bicon='standard' ;
    if (m) {
      if (baseIcon[m[1]]) {
        var bicon=m[1];
      }
    }

    var markerIcon = new GIcon(baseIcon[bicon]);
    markerIcon.image = marker;
    var returnMarker = new GMarker(point, markerIcon);
  }
  else {
    var returnMarker = new GMarker(point);
  }

  // Show this htmltext  info window when it is clicked.
  if (htmltext.length>0) {
    GEvent.addListener(returnMarker, 'click', function() {
      returnMarker.openInfoWindowHtml(htmltext);
    });
  }
  return returnMarker;
}

//moves thispoint based on the form with the id gmap-longitude and gmap-latitude
thispoint=false;

function gmap_textchange(thismap) {
  if (thispoint) {
    thismap.removeOverlay(thispoint);
  }
  thismap.panTo(newpoint=new GLatLng($("gmap-latitude").value, $("gmap-longitude").value));
  thismap.addOverlay(thispoint=new GMarker(newpoint));
}

function createMarkerFromRSS(item,icon) {
  var title = item.getElementsByTagName("title")[0].childNodes[0].nodeValue;

//  var description = item.getElementsByTagName("description")[0].childNodes[0].nodeValue;
  var link = item.getElementsByTagName("link")[0].childNodes[0].nodeValue;
//  alert('Link: ' +link);
  // namespaces are handled by spec in moz, not in ie  -- Looking for a better more universal parsing routine.
  if (navigator.userAgent.toLowerCase().indexOf("msie") < 0) {
    // Is there a geo:lat defined?
    if (item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","lat").length>0) {
      item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","lat")[0].normalize();
      // Is there a value for geo:lat
      if (item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","lat")[0].hasChildNodes()) {
        // Then there probably is a geo:long too
        var lat = item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","lat")[0].childNodes[0].nodeValue;
        var lng = item.getElementsByTagNameNS("http://www.w3.org/2003/01/geo/wgs84_pos#","long")[0].childNodes[0].nodeValue;
      }
    }
  } else {
    var lat = item.getElementsByTagName("geo:lat")[0].childNodes[0].nodeValue;
    if (lat == undefined) {
      lat = item.getElementsByTagName("icbm:lat")[0].childNodes[0].nodeValue;
    }
    var lng = item.getElementsByTagName("geo:long")[0].childNodes[0].nodeValue;
    if (lng == undefined) {
      lng = item.getElementsByTagName("icbm:long")[0].childNodes[0].nodeValue;
    }
  }
  //alert('Lat: '+lat);
  var point = new GLatLng(parseFloat(lat), parseFloat(lng));
  var html = "<a href=\"" + link + "\">" + title + "</a>";
  var marker=createGMarker(point, html, icon);

return marker;
}

function parseGeoRSS(map, rssurl,icon) {

  var request = GXmlHttp.create();
  request.open("GET", rssurl, true);
  request.onreadystatechange = function() {
    if (request.readyState == 4) {
      var xmlDoc = request.responseXML;
      var items = xmlDoc.documentElement.getElementsByTagName("item");
      for (var i = 0; i < items.length; i++) {

        var marker = createMarkerFromRSS(items[i], icon);
        map.addOverlay(marker);
      }

    }
  }
  request.send(null);
}