ngmap/directives/traffic-layer.js

The Simplest AngularJS Google Maps V3 Directive

/**
 * @ngdoc directive
 * @name traffic-layer
 * @param Attr2MapOptions {service} convert html attribute to Google map api options
 * @description
 *   Requires:  map directive
 *   Restrict To:  Element
 *
 * @example
 * Example:
 *
 *   <map zoom="13" center="34.04924594193164, -118.24104309082031">
 *     <traffic-layer></traffic-layer>
 *    </map>
 */
(function() {
  'use strict';

  angular.module('ngMap').directive('trafficLayer', [
    'Attr2MapOptions', function(Attr2MapOptions) {
    var parser = Attr2MapOptions;

    var getLayer = function(options, events) {
      var layer = new google.maps.TrafficLayer(options);
      for (var eventName in events) {
        google.maps.event.addListener(layer, eventName, events[eventName]);
      }
      return layer;
    };

    return {
      restrict: 'E',
      require: ['?^map','?^ngMap'],

      link: function(scope, element, attrs, mapController) {
        mapController = mapController[0]||mapController[1];

        var orgAttrs = parser.orgAttributes(element);
        var filtered = parser.filter(attrs);
        var options = parser.getOptions(filtered, {scope: scope});
        var events = parser.getEvents(scope, filtered);
        console.log('traffic-layer options', options, 'events', events);

        var layer = getLayer(options, events);
        mapController.addObject('trafficLayers', layer);
        mapController.observeAttrSetObj(orgAttrs, attrs, layer);  //observers
        element.bind('$destroy', function() {
          mapController.deleteObject('trafficLayers', layer);
        });
      }
     }; // return
  }]);
})();