JS Geolocation sample

geolocation.js

define("Geolocation", {

  deviceSupport: function() {
    if(navigator.geolocation)
      return true;
    else if(google.gears)
      return true;
    else
      return false;
  },

  start: function(success_callback, error_callback) {
    // Try W3C Geolocation (Preferred)
    if(navigator.geolocation) {
      navigator.geolocation.getCurrentPosition(function(position) {
        success_callback(position.coords.latitude, position.coords.longitude);
      }, function() {
        error_callback();
      }, { enableHighAccuracy: true, maximumAge: 600000 });

    // Try Google Gears Geolocation
    } else if (google.gears) {
      var geo = google.gears.factory.create('beta.geolocation');
      geo.getCurrentPosition(function(position) {
        success_callback(position.latitude, position.longitude);
      }, function() {
        error_callback;
      });
    }
  },

  // Returns a "mocked" like object representing Google LatLng
  // Default position is set up to Portland/USA.
  default_position: function() {
    var latLng = {}

    latLng.lat = function() {
      return 45.52345150
    }

    latLng.lng = function() {
      return -122.67620710
    }

    return {latLng: latLng}
  }
})