// JavaScript Document

 var map;
    var gdir;
    var geocoder = null;
    var addressMarker;
	var counter = 0;
    function initialize() {
      if (GBrowserIsCompatible()) {      
        map = new GMap2(document.getElementById("map_canvas"));
		map.setCenter(new GLatLng(45.64, 0.18), 12);
		gdir = new GDirections(map, document.getElementById("directionsInside"));
        GEvent.addListener(gdir, "load", onGDirectionsLoad);
        GEvent.addListener(gdir, "error", handleErrors);
		// Fonction pour recentrer automatiquement la carte
		/*GEvent.addListener(map, "click", function() {
		map.setCenter(new GLatLng(45.87, 1.25), 7);
		counter++;
		alert("La carte a ete recentree " + counter + " fois.");
		});*/
		// Fonction pour afficher les lat et long en temps réel
		GEvent.addListener(map, "moveend", function() {
		var center = map.getCenter();
  		document.getElementById("latLong").innerHTML = center.toString();
		});
		// Chargement des contrôleurs de carte
			// Permet d'ajouter le controleur de zoom pour la carte, ainsi que l'outil de déplacement
			map.addControl(new GLargeMapControl());
			// Permet de switcher le type de carte : route, satellite ou hybride
			map.addControl(new GMapTypeControl());
			// Permet d'avoir la préview de la grande carte en bas à droite
			map.addControl(new GOverviewMapControl()); 
		//
		// Initialement la fonction d'affichage d'un itinéraire de base est ici désactivée
        //setDirections("Bordeaux", "Saint Yrieix sur Charente", "fr_FR");
      
		// Create a base icon for all of our markers that specifies the
        // shadow, icon dimensions, etc.
        var baseIcon = new GIcon();
        baseIcon.shadow = "http://www.google.com/mapfiles/shadow50.png";
        baseIcon.iconSize = new GSize(20, 34);
        baseIcon.shadowSize = new GSize(37, 34);
        baseIcon.iconAnchor = new GPoint(9, 34);
        baseIcon.infoWindowAnchor = new GPoint(9, 2);
        baseIcon.infoShadowAnchor = new GPoint(18, 25);

        // Creates a marker whose info window displays the letter corresponding
        // to the given index.
        function createMarker(point,index) {
          var letteredIcon = new GIcon(baseIcon);
          letteredIcon.image = "./images/gip16_1.png";

          // Set up our GMarkerOptions object
          markerOptions = { icon:letteredIcon };
          var marker = new GMarker(point, markerOptions);

          GEvent.addListener(marker, "click", function() {
            marker.openInfoWindowHtml("<img src='./images/gip16_2.png' alt='' /><p>GIP Charente SolidaritéS</p>");
          });
          return marker;
        }

      // Définitions de latitude et longitude du marker
		var lngSpan = 0.153;
		var latSpan = 45.629;
		// Attribution des lat et long pour un marker
		var point = new GLatLng(latSpan,lngSpan);
		// Création du marker
		map.addOverlay(createMarker(point,1));
	  
	  
	  }
    }
	
    // Fonction pour récupérer l'itinéraire et le tracer
    function setDirections(fromAddress, toAddress, locale) {
      gdir.load("from: " + fromAddress + " to: " + toAddress,
                { "locale": locale });
    }

    function handleErrors(){
	   if (gdir.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: " + gdir.getStatus().code);
	   else if (gdir.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: " + gdir.getStatus().code);
	   
	   else if (gdir.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: " + gdir.getStatus().code);

	//   else if (gdir.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: " + gdir.getStatus().code);
	     
	   else if (gdir.getStatus().code == G_GEO_BAD_KEY)
	     alert("La clef API Google est invalide ou ne fonctionne plus pour cette URL. \n Error code: " + gdir.getStatus().code);

	   else if (gdir.getStatus().code == G_GEO_BAD_REQUEST)
	     alert("A directions request could not be successfully parsed.\n Error code: " + gdir.getStatus().code);
	    
	   else alert("La destination de depart n'est pas assez précise, veuillez spécifier le département ou la région!");
	   
	}

	function onGDirectionsLoad(){ 
      // Use this function to access information about the latest load()
      // results.

      // e.g.
      // document.getElementById("getStatus").innerHTML = gdir.getStatus().code;
	  // and yada yada yada...
	}