// JavaScript Document
var directions = null;
function createMarker(point, index, baseIcon, texte) {
// Create a lettered icon for this point using our icon class
	var letter = String.fromCharCode("A".charCodeAt(0) + index);
	var icon = new GIcon(baseIcon);
	icon.image = "http://www.google.com/mapfiles/marker" + letter + ".png";
	var marker = new GMarker(point, icon);
	GEvent.addListener(marker, "click", function() {
		marker.openInfoWindowHtml(texte);
	 });
	return marker;
}


function TextualZoomControl() {}TextualZoomControl.prototype = new GControl();
// Creates a one DIV for each of the buttons and places them in a container
// DIV which is returned as our control element. We add the control to
// to the map container and return the element for the map class to
// position properly.
TextualZoomControl.prototype.initialize = function(map)
{
  var container = document.createElement("div");
  var zoomInDiv = document.createElement("div");
  this.setButtonStyle_(zoomInDiv);
  container.appendChild(zoomInDiv);
  zoomInDiv.appendChild(document.createTextNode("+"));
  GEvent.addDomListener(zoomInDiv, "click", function() {    map.zoomIn();  });
  var zoomOutDiv = document.createElement("div");
  this.setButtonStyle_(zoomOutDiv);
  container.appendChild(zoomOutDiv);
  zoomOutDiv.appendChild(document.createTextNode("-"));
  GEvent.addDomListener(zoomOutDiv, "click", function() {    map.zoomOut();  });
  map.getContainer().appendChild(container);
  return container;
}
// By default, the control will appear in the top left corner of the
// map with 7 pixels of padding.
TextualZoomControl.prototype.getDefaultPosition = function() {  return new GControlPosition(G_ANCHOR_TOP_LEFT, new GSize(7, 7));}
// Sets the proper CSS for the given button element.
TextualZoomControl.prototype.setButtonStyle_ = function(button)
{
	button.style.textDecoration = "none";
	button.style.color = "#0000cc";
	button.style.backgroundColor = "white";
	button.style.font = "small Arial";
	button.style.border = "1px solid black";
	button.style.padding = "2px";
	button.style.marginBottom = "3px";
	button.style.textAlign = "center";
	button.style.width = "3em";
	button.style.cursor = "pointer";
}
function le_load(GPSLatitude, GPSLongitude, DivRes, DivDir, Zoom, texteMarker) {
if (GBrowserIsCompatible()) {
	var map = new GMap2(document.getElementById(DivRes));
	map.setCenter(new GLatLng(GPSLatitude, GPSLongitude), Zoom);

	var icon = new GIcon();
	icon.image = "http://labs.google.com/ridefinder/images/mm_20_red.png";
	icon.shadow = "http://labs.google.com/ridefinder/images/mm_20_shadow.png";
	icon.iconSize = new GSize(12, 20);
	icon.shadowSize = new GSize(22, 20);
	icon.iconAnchor = new GPoint(6, 20);
	icon.infoWindowAnchor = new GPoint(5, 1);

	var bounds = map.getBounds();
	var southWest = bounds.getSouthWest();
	var northEast = bounds.getNorthEast();
	var lngSpan = northEast.lng() - southWest.lng();
	var latSpan = northEast.lat() - southWest.lat();
	var point = new GLatLng(southWest.lat() + latSpan / 2, southWest.lng() + lngSpan / 2);
	map.addOverlay(new GMarker(point, icon));


	var bounds = map.getBounds();
	var southWest = bounds.getSouthWest();
	var northEast = bounds.getNorthEast();
	var lngSpan = northEast.lng() - southWest.lng();
	var latSpan = northEast.lat() - southWest.lat();
	var point = new GLatLng(southWest.lat() + latSpan / 2, southWest.lng() + lngSpan / 2);
	map.addOverlay(createMarker(point, 0, icon, texteMarker));

	directionsPanel = document.getElementById(DivDir);
	directions = new GDirections(map, directionsPanel);

	map.addControl(new TextualZoomControl());
  }
}
function calcul_itineraire(adrFrom, adrTo)
{
	/*directionsPanel = document.getElementById("my_textual_div");
	directions = new GDirections(map, directionsPanel);*/
	GEvent.addListener(directions, "error", handleErrors);
	directions.load("from: " + adrFrom + " to: " + adrTo + " ",	{ "locale":"fr_EU" });
}

function handleErrors(){
   if (directions.getStatus().code == G_GEO_UNKNOWN_ADDRESS)
	 alert("No corresponding geographic location could be found for one of the specified addresses. This may be due to the fact that the address is relatively new, or it may be incorrect.\nError code: " + directions.getStatus().code);
   else if (directions.getStatus().code == G_GEO_SERVER_ERROR)
	 alert("A geocoding or directions request could not be successfully processed, yet the exact reason for the failure is not known.\n Error code: " + directions.getStatus().code);

   else if (directions.getStatus().code == G_GEO_MISSING_QUERY)
	 alert("The HTTP q parameter was either missing or had no value. For geocoder requests, this means that an empty address was specified as input. For directions requests, this means that no query was specified in the input.\n Error code: " + directions.getStatus().code);

//   else if (directions.getStatus().code == G_UNAVAILABLE_ADDRESS)  <--- Doc bug... this is either not defined, or Doc is wrong
//     alert("The geocode for the given address or the route for the given directions query cannot be returned due to legal or contractual reasons.\n Error code: " + directions.getStatus().code);

   else if (directions.getStatus().code == G_GEO_BAD_KEY)
	 alert("The given key is either invalid or does not match the domain for which it was given. \n Error code: " + directions.getStatus().code);

   else if (directions.getStatus().code == G_GEO_BAD_REQUEST)
	 alert("A directions request could not be successfully parsed.\n Error code: " + directions.getStatus().code);

   else alert("An unknown error occurred.");

}