176 org_home_gmap = new function(){

   177   // Global variables

   178   var map;

   179 

   180   // HTML div tag where map needs to be inserted

   181   var map_div = "org_home_map";

   182   

   183   // Geocoder object for obtaining locations from city/country

   184   var geocoder = new GClientGeocoder();

   185   

   186   // Lat/lng pairs stored for drawing polylines.

   187   var student_lat = 0;

   188   var student_lng = 0;

   189   var mentor_lat = 0;

   190   var mentor_lng = 0;

   191 

   192   // Setup required icons

   193   var base_icon = new GIcon();

   194   base_icon.shadow = "http://www.google.com/mapfiles/shadow50.png";

   195   base_icon.iconSize = new GSize(20, 34);

   196   base_icon.shadowSize = new GSize(37, 34);

   197   base_icon.iconAnchor = new GPoint(9, 34);

   198   base_icon.infoWindowAnchor = new GPoint(9, 2);

   199   base_icon.infoShadowAnchor = new GPoint(18, 25);

   200   var student_icon = new GIcon(base_icon);

   201   student_icon.image = "http://www.google.com/mapfiles/marker.png";

   202   var mentor_icon = new GIcon(base_icon);

   203   mentor_icon.image = "/soc/content/images/mentor-marker.png";

   204 

   205   // Mark mentor marker if he has published the location and call 

   206   // drawStudentMarker function.

   207   function drawMarkers(map_elem) {

   208     function iterateStudents(students, mentor_name, mentor_published) {

   209       for (student in students) {

   210         drawStudentMarker(students[student], mentor_name, mentor_published);

   211       }

   212     }

   213     if (map_elem.type == 'mentor') {

   214       geocoder.setBaseCountryCode(map_elem.ccTLD);

   215       geocoder.getLatLng(

   216         map_elem.city,

   217         function(point) {

   218           if (point) {

   219             var marker = new GMarker(point, mentor_icon);

   220             mentor_lat = marker.getPoint().lat();

   221             mentor_lng = marker.getPoint().lng();

   222             var html = "<strong>" + map_elem.name + "</strong><br> Mentor";

   223             GEvent.addListener(marker, "click", function() {

   224                  marker.openInfoWindowHtml(html);

   225             });

   226             map.addOverlay(marker);

   227           } else {

   228             mentor_lat = null;

   229             mentor_lng = null;

   230           }

   231           iterateStudents(map_elem.students, map_elem.name, true);

   232         }

   233       );

   234     } else if (map_elem.type == 'none') {

   235       drawStudentMarker(map_elem.student, map_elem.name, false);

   236     }

   237   }

   238 

   239   // Mark student and enable a popup box upon click

   240   function drawStudentMarker(student, mname, mentor_published) {

   241     geocoder.setBaseCountryCode(student.ccTLD);

   242     geocoder.getLatLng(

   243       student.city,

   244       function(point) {

   245         if (point) {

   246           var marker = new GMarker(point, student_icon);

   247           var html = "<strong>" + student.name + "</strong><br>";

   248           html += "<a href='"+ student.url + "'>" + student.summary + "</a><br>";

   249           html += "Mentor: " + mname;

   250           GEvent.addListener(marker, "click", function() {

   251             marker.openInfoWindowHtml(html);

   252           });

   253           student_lat = marker.getPoint().lat();

   254           student_lng = marker.getPoint().lng();

   255           map.addOverlay(marker);

   256         } else {

   257           student_lat = null;

   258           student_lng = null;

   259         }

   260         if (mentor_published) {

   261           drawPolyLine();

   262         }

   263       }

   264     );

   265   }

   266 

   267   // Draw a polyline between the student and his mentor

   268   drawPolyLine = function() {

   269     var polyline = new GPolyline([

   270       new GLatLng(mentor_lat, mentor_lng),

   271       new GLatLng(student_lat, student_lng)

   272       ], "#ff0000", 3);

   273     map.addOverlay(polyline);

   274   }

   275     

   276   // Map load function

   277   this.map_load = function(map_data) {

   278     // Check if browser is gmap compatible.

   279     if (GBrowserIsCompatible()) {

   280       // Create the map and add small controls

   281       map = new GMap2(document.getElementById(map_div));

   282       map.addControl(new GLargeMapControl());

   283         map.addControl(new GMapTypeControl());

   284       

   285       // Set map center and initial zoom level

   286       map.setCenter(new GLatLng(0, 0), 1);

   287       

   288       for (elem in map_data) {

   289         drawMarkers(map_data[elem])

   290       }

   291     }

   292   }

   293 };