# HG changeset patch
# User Lennard de Rijk <ljvderijk@gmail.com>
# Date 1240179275 0
# Node ID ab216123bee77bcfe85336009e6810108aec48f7
# Parent  947cfb05463be12fff3a4ebe8b4740961f957e2a
Added org_home_gmap function to the map JS for displaying the mentor-student map.

Patch by: Madhusudan.C.S and Merio Ferraro
Reviewed by: Lennard de Rijk

diff -r 947cfb05463b -r ab216123bee7 app/soc/content/js/map-090420.js
--- a/app/soc/content/js/map-090420.js	Sun Apr 19 22:07:20 2009 +0000
+++ b/app/soc/content/js/map-090420.js	Sun Apr 19 22:14:35 2009 +0000
@@ -173,3 +173,121 @@
   }
 };
 
+org_home_gmap = new function(){
+  // Global variables
+  var map;
+
+  // HTML div tag where map needs to be inserted
+  var map_div = "org_home_map";
+  
+  // Geocoder object for obtaining locations from city/country
+  var geocoder = new GClientGeocoder();
+  
+  // Lat/lng pairs stored for drawing polylines.
+  var student_lat = 0;
+  var student_lng = 0;
+  var mentor_lat = 0;
+  var mentor_lng = 0;
+
+  // Setup required icons
+  var base_icon = new GIcon();
+  base_icon.shadow = "http://www.google.com/mapfiles/shadow50.png";
+  base_icon.iconSize = new GSize(20, 34);
+  base_icon.shadowSize = new GSize(37, 34);
+  base_icon.iconAnchor = new GPoint(9, 34);
+  base_icon.infoWindowAnchor = new GPoint(9, 2);
+  base_icon.infoShadowAnchor = new GPoint(18, 25);
+  var student_icon = new GIcon(base_icon);
+  student_icon.image = "http://www.google.com/mapfiles/marker.png";
+  var mentor_icon = new GIcon(base_icon);
+  mentor_icon.image = "/soc/content/images/mentor-marker.png";
+
+  // Mark mentor marker if he has published the location and call 
+  // drawStudentMarker function.
+  function drawMarkers(map_elem) {
+    function iterateStudents(students, mentor_name, mentor_published) {
+      for (student in students) {
+        drawStudentMarker(students[student], mentor_name, mentor_published);
+      }
+    }
+    if (map_elem.type == 'mentor') {
+      geocoder.setBaseCountryCode(map_elem.ccTLD);
+      geocoder.getLatLng(
+        map_elem.city,
+        function(point) {
+          if (point) {
+            var marker = new GMarker(point, mentor_icon);
+            mentor_lat = marker.getPoint().lat();
+            mentor_lng = marker.getPoint().lng();
+            var html = "<strong>" + map_elem.name + "</strong><br> Mentor";
+            GEvent.addListener(marker, "click", function() {
+                 marker.openInfoWindowHtml(html);
+            });
+            map.addOverlay(marker);
+          } else {
+            mentor_lat = null;
+            mentor_lng = null;
+          }
+          iterateStudents(map_elem.students, map_elem.name, true);
+        }
+      );
+    } else if (map_elem.type == 'none') {
+      drawStudentMarker(map_elem.student, map_elem.name, false);
+    }
+  }
+
+  // Mark student and enable a popup box upon click
+  function drawStudentMarker(student, mname, mentor_published) {
+    geocoder.setBaseCountryCode(student.ccTLD);
+    geocoder.getLatLng(
+      student.city,
+      function(point) {
+        if (point) {
+          var marker = new GMarker(point, student_icon);
+          var html = "<strong>" + student.name + "</strong><br>";
+          html += "<a href='"+ student.url + "'>" + student.summary + "</a><br>";
+          html += "Mentor: " + mname;
+          GEvent.addListener(marker, "click", function() {
+            marker.openInfoWindowHtml(html);
+          });
+          student_lat = marker.getPoint().lat();
+          student_lng = marker.getPoint().lng();
+          map.addOverlay(marker);
+        } else {
+          student_lat = null;
+          student_lng = null;
+        }
+        if (mentor_published) {
+          drawPolyLine();
+        }
+      }
+    );
+  }
+
+  // Draw a polyline between the student and his mentor
+  drawPolyLine = function() {
+    var polyline = new GPolyline([
+      new GLatLng(mentor_lat, mentor_lng),
+      new GLatLng(student_lat, student_lng)
+      ], "#ff0000", 3);
+    map.addOverlay(polyline);
+  }
+    
+  // Map load function
+  this.map_load = function(map_data) {
+    // Check if browser is gmap compatible.
+    if (GBrowserIsCompatible()) {
+      // Create the map and add small controls
+      map = new GMap2(document.getElementById(map_div));
+      map.addControl(new GLargeMapControl());
+        map.addControl(new GMapTypeControl());
+      
+      // Set map center and initial zoom level
+      map.setCenter(new GLatLng(0, 0), 1);
+      
+      for (elem in map_data) {
+        drawMarkers(map_data[elem])
+      }
+    }
+  }
+};