Adjust the total_popularity after ranging
This way 'off the scale' orgs (many applicants, with only few mentors
available) will not pull the total amount of allocated slots down as
much as before.
Patch by: Sverre Rabbelier
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 postalcode_zoom = 12;
// 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 = {
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 ($(address.postalcode.id).val()!="") zoom_set = postalcode_zoom;
else if ($(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 = true;
// 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();
});
}
}
};