+
−role_profile_gmap = new function(){
+
−  // Create global variables
+
−  var map;
+
−  var marker;
+
−  var geocoder;
+
−
+
−  // The following strings can be customized to reflect ids in the page. 
+
−  // You can also add or remove fields used for GMap Geocoding in 
+
−  // the JSON address object
+
−
+
−  var current_lat = 0;
+
−  var current_lng = 0;
+
−
+
−  // Two different levels for zoom: Starting one and an inner that 
+
−  // is used when showing the map if lat and lon page fields are set
+
−  var world_zoom = 0;
+
−  var country_zoom = 4;
+
−  var state_zoom = 6;
+
−  var city_zoom = 10;
+
−  var address_zoom = 13;
+
−
+
−  // Do not add a starting # as this JQuery selector seems 
+
−  // incompatible with GMap API
+
−  var map_div = "role_profile_map";
+
−
+
−  var field_lat = "#id_latitude";
+
−  var field_lng = "#id_longitude";
+
−  // Need to save old values to avoid unwanted updating 
+
−  // of lat and lot if marker dragged and blur another time an address field
+
−  var address = {
+
−    street: {
+
−      id: "#id_res_street",
+
−      old_value: ""
+
−    },
+
−    city: {
+
−      id: "#id_res_city",
+
−      old_value: ""
+
−    },
+
−    state: {
+
−      id: "#id_res_state",
+
−      old_value: ""
+
−    },
+
−    country: {
+
−      id: "#id_res_country",
+
−      old_value: ""
+
−    },
+
−    postalcode: {
+
−      id: "#id_res_postalcode",
+
−      old_value: ""
+
−    }
+
−  }
+
−
+
−  // Save current address fields in the JSON Object
+
−  function saveOldAddress() {
+
−    for (var a in address) {
+
−      address[a].old_value = $(address[a].id).val();
+
−    }
+
−  }
+
−
+
−  // Return true if the user has edited address fields
+
−  function isNewAddress() {
+
−    for (var a in address) {
+
−      if ($(address[a].id).val() != address[a].old_value) return true;
+
−    }
+
−    return false;
+
−  }
+
−
+
−  // Write saved lat and lng values to page fields
+
−  function setLatLngFields() {
+
−    $(field_lat).val(current_lat);
+
−    $(field_lng).val(current_lng);
+
−  }
+
−
+
−  // Read lat and lng fields and store them
+
−  function readLatLngFields() {
+
−    current_lat = $(field_lat).val();
+
−    current_lng = $(field_lng).val();
+
−  }
+
−
+
−  // This function reads address fields, merge them and uses 
+
−  // GMap API geocoding to find the first hit
+
−  // Using geocoding http://code.google.com/intl/it-IT/apis/maps/documentation/services.html#Geocoding
+
−  function calculateAddress() {
+
−    // If the user has really edited address fields...
+
−    if (isNewAddress()) {
+
−      // Merge address fields
+
−      var address_string = "";
+
−      for (var a in address) {
+
−        address_string+=$(address[a].id).val();
+
−        if (a!=address.length-1) {address_string+=","};
+
−      }
+
−
+
−      // Ask GMap API for geocoding
+
−      geocoder.getLatLng(
+
−        address_string,
+
−        function(point) {
+
−          // If a point is found
+
−          if (point) {
+
−            // Save the current address in the JSON object
+
−            saveOldAddress();
+
−            // Set the new zoom, map center and marker coords
+
−            var zoom_set = world_zoom;
+
−            if ($(address.street.id).val()!="") zoom_set = address_zoom;
+
−            else if ($(address.city.id).val()!="") zoom_set = city_zoom;
+
−            else if ($(address.state.id).val()!="") zoom_set = state_zoom;
+
−            else if ($(address.country.id).val()!="") zoom_set = country_zoom;
+
−            map.setCenter(point, zoom_set);
+
−            marker.setPoint(point);
+
−            map.clearOverlays();
+
−            map.addOverlay(marker);
+
−            // Save point coords in local variables and then update 
+
−            // the page lat/lng fields
+
−            current_lat = point.lat();
+
−            current_lng = point.lng();
+
−            setLatLngFields();
+
−          }
+
−        }
+
−      );
+
−    }
+
−  }
+
−
+
−  // Public function to load the map
+
−  this.map_load = function() {
+
−    // All can happen only if there is gmap compatible browser.
+
−    // TODO: Fallback in case the browser is not compatible
+
−    if (GBrowserIsCompatible()) {
+
−      // Save the address fields. This is useful if the page is being edited 
+
−      // to not update blindly the lat/lng fields with GMap geocoding if 
+
−      // blurring an address field
+
−      saveOldAddress();
+
−      var starting_point;
+
−      var zoom_selected = world_zoom;
+
−      var show_marker = false;
+
−
+
−      // Create the map and add small controls
+
−      map = new GMap2(document.getElementById(map_div));
+
−      map.addControl(new GSmallMapControl());
+
−      map.addControl(new GMapTypeControl());
+
−
+
−      // Instantiate a global geocoder for future use
+
−      geocoder = new GClientGeocoder();
+
−
+
−      // If lat and lng fields are not void (the page is being edited) then 
+
−      // update the starting coords, modify the zoom level and tells following 
+
−      // code to show the marker
+
−      if ($(field_lat).val()!="" && $(field_lng).val()!="") {
+
−        readLatLngFields();
+
−        zoom_selected = address_zoom;
+
−        show_marker = true;
+
−      }
+
−      
+
−      // Set map center, marker coords and show it if this is an editing
+
−      starting_point = new GLatLng(current_lat,current_lng);
+
−      map.setCenter(starting_point, zoom_selected);
+
−      marker = new GMarker(starting_point, {draggable:true});
+
−      if (show_marker) map.addOverlay(marker);
+
−      
+
−      // Adds a new event listener to geocode the address when an address 
+
−      // field is blurred
+
−      for (var a in address) {
+
−        $(address[a].id).blur(calculateAddress);
+
−      }
+
−      
+
−      // Adds a new event listener: if the marker has been dragged around...
+
−      GEvent.addListener(marker, "dragend", function() {
+
−        // Update internal variables with current marker coords...
+
−        current_lat = marker.getPoint().lat();
+
−        current_lng = marker.getPoint().lng();
+
−        // ...and set page fields accordingly
+
−        setLatLngFields();
+
−      });
+
−    }
+
−  }
+
−};
+
−