/////////////////////////////////
//   Scripts do Google Maps    //
/////////////////////////////////

// lat - N - S
// Long - O - E

//--------------------------------------------------------------
// create the map (Inicialização)
//--------------------------------------------------------------

var map;
var gdir;

var gmarkers = [];
var to_htmls = [];
var from_htmls = [];



function inicializar(centrar,zoomLevel) {
       
    map = new GMap2(document.getElementById("map"));      
    
    // === create a GDirections Object ===
    gdir = new GDirections(map, document.getElementById("directions"));      
    
    
     // ------------------------------------------
    // para os erros de get directions
     // ------------------------------------------
    
    var reasons=[];
      
      reasons[G_GEO_MISSING_ADDRESS]    = "Missing Address: The address was either missing or had no value.";
      reasons[G_GEO_UNKNOWN_ADDRESS]    = "Unknown Address:  No corresponding geographic location could be found for the specified address.";
      reasons[G_GEO_UNAVAILABLE_ADDRESS]= "Unavailable Address:  The geocode for the given address cannot be returned due to legal or contractual reasons.";
      reasons[G_GEO_TOO_MANY_QUERIES]   = "Too Many Queries: The daily geocoding quota for this site has been exceeded.";
      reasons[G_GEO_SERVER_ERROR]       = "Server error: The geocoding request could not be successfully processed.";
      reasons[G_GEO_BAD_REQUEST]        = "A directions request could not be successfully parsed.";
      reasons[G_GEO_UNKNOWN_DIRECTIONS] = "The GDirections object could not compute directions between the points.";

      // === catch Directions errors ===
      GEvent.addListener(gdir, "error", function() {
        var code = gdir.getStatus().code;
        var reason="Code "+code;
        if (reasons[code]) {
          reason = reasons[code]
        } 

        alert("Failed to obtain directions, "+reason);
      });
    
     // ------------------------------------------
     // fim do get dirtections
     // ------------------------------------------ 
      
    var mapTypeControl = new GMapTypeControl();
        
    map.addControl(new GSmallZoomControl());
    map.addControl(new GMapTypeControl());
    map.removeMapType(G_HYBRID_MAP);
    map.addControl(new GOverviewMapControl());
                  
    map.enableScrollWheelZoom();
          
       if (!zoomLevel) {
           zoomLevel=6;
        }     
   
       if (centrar=='true') {
           map.setCenter(new GLatLng(39.742268,-6.844487),zoomLevel);            
        }     
 }

//                     //
//--------------------------------------------------------------
// DIRECTIONS
//--------------------------------------------------------------   
//                     //

 function getDirections() {
        
        var saddr = document.getElementById("saddr").value
        
        if (saddr != "") { saddr = saddr + ', Portugal' }
                 
        var daddr = document.getElementById("daddr").value
        
        //changeDisplay('ctl00_ContentPlaceHolder1_pnlResultados');
        showDirs('ctl00_ContentPlaceHolder1_pnlResultados');
        gdir.load("from: "+saddr+" to: "+daddr);
       
      }

  // This function picks up the click and opens the corresponding info window
      function myclick(i) {
        gmarkers[i].openInfoWindowHtml(htmls[i]);
      }

      // functions that open the directions forms
      function tohere(i) {
        gmarkers[i].openInfoWindowHtml(to_htmls[i]);
      }
  

//--------------------------------------------------------------
// Cria o ponto e o HTML que mostra quando se clica no mesmo
// A function to create the marker and set up the event window
//--------------------------------------------------------------   
    
  function processaPontos(lat,lng, html, label, iCount, numPontos) {
  
        var gmarkersD = [];      
        var gmarkersG = [];      
        
        var point = new GLatLng(lat,lng);
        var myIcon = new GIcon(G_DEFAULT_ICON);
        //var myIcon = new GIcon(G_DEFAULT_ICON,"images/mapas/logo_varios.gif);
        
        if (numPontos=='no') {
               myIcon.image = "images/mapas/logo.gif";
               
               html = html + '<div class="text_info_window" style="padding-top: 5px;"><p><a href="javascript:tohere('+iCount+')">Ver Itinerário</a></p></div>';
               
            } else {
                myIcon.image = 'images/mapas/logo_' + numPontos + '.gif';
        }
                              
        var marker = new GMarker(point, myIcon);
        
       to_htmls[iCount] = '<div class="text_info_window" style="padding-top: 5px;">' +
	  	 '<h2>Morada de inicio:</h2>' + 
		 '<form action="javascript:getDirections()">' +
           '<input type="text" maxlength=40 name="saddr" id="saddr" value="" class="inputMorada" /><br>' +
           '<input value="Obter Itinerário" type="SUBMIT" class="inputBtn" />' +
           '<input type="hidden" id="daddr" value="'+label+"@"+ point.lat() + ',' + point.lng() + '" />' +
           '</div>';      
      
        GEvent.addListener(marker, "click", function() {
            marker.openInfoWindowHtml(html);
        });
        
        var mm = new GMarkerManager(map);
        
        gmarkers[iCount] = marker;
        
        if (numPontos=='no') {
                mm.addMarker(gmarkers[iCount],8,17);
                mm.refresh();
            } else {
                mm.addMarker(gmarkers[iCount],1,7);
                mm.refresh();
         }
 }
 

 //--------------------------------------------------------------
// localiza e marca um local (adress)
//--------------------------------------------------------------

 function locateAddress(address,zoomDist) {
    
    address = address + ", Portugal";
    
     var geocoder = new GClientGeocoder();
      
      if (geocoder) {
        geocoder.getLatLng(
          address,
          function(point) {
            if (!point) {
              alert(address + " não encontrado!");              
            } else {
              map.setCenter(point, zoomDist);
              var marker = new GMarker(point);
              
              map.addOverlay(marker);
              marker.openInfoWindowHtml(address);
              start = point;
            }
          }
        );
      }
    }
    
//--------------------------------------------------------------
 // Localizar e centrar no distrito
 //--------------------------------------------------------------
 
 function centerAddress(address,zoomDist) {
     
     address = address + ", Portugal";
     
     var geocoder = new GClientGeocoder();
      
      if (geocoder) {
        geocoder.getLatLng(
          address,
          function(point) {
            if (!point) {
              alert(address + " não encontrado!");              
            } else {
              map.setCenter(point, zoomDist);
            }
          }
        );
      }
    }
    
//--------------------------------------------------------------
 // limpa todos os layers (gmarkers)
 //--------------------------------------------------------------
  
    function limpaLayers() {
     
     map.clearOverlays();
    }