consumer.js

(function () {
  'use strict';

  function ConsumerController ($scope, Service) {
    this.init = function () {

      Service.subscribeToEventName($scope, function (e, data) {
        // do something
      }, this);
    };

    this.init();
  }

  ConsumerController.$inject = [
    '$scope',
    'Service'
  ];

  angular.module('Consumer')
    .controller('consumer', ConsumerController);
})();

custom-event.js

(function () {
  'use strict';

  /**
   * This service is used to handle global events inside services, without the
   * need to subscribe or trigger events in different parts of code
   */
  function CustomEventFactory ($window, $rootScope) {
    var CustomEvent = {
      /**
       * This method attach the vent names subscribeTo* and notify* to the
       * context object where it's called
       *
       * @param  {string} eventName The event name identifier
       * @param  {object} context   The object on where the events are going
       *                            to be attached
       */
      attach: function (eventName, context) {

        /**
         * subscribeTo{event} subscribe to an specific event of the object
         *
         * @param  {$scope}   $scope The subscriber' scope, this is to allow
         *                           de-subscription on scope $destroy event
         * @param  {Function} fn     Callback function to call
         * @param  {Any}      fnCtx  Context for the callback function
         *
         * @return {Function}        Handler object for manual de-subscription
         */
        context['subscribeTo' + eventName] = function($scope, fn, fnCtx) {
          var handler = $rootScope.$on(eventName, fn.bind(fnCtx));

          $scope.$on('$destroy', handler);

          return handler;
        };

        /**
         * notify{event} sends a notification to every subscriber on this event
         *
         * @param  {Any} data The information to send, if any
         */
        context['notify' + eventName] = function (data) {
          $rootScope.$emit(eventName, data);
        };
      }
    };

    return CustomEvent;
  }

  CustomEventFactory.$inject = ['$window', '$rootScope'];

  angular.module('CustomEvent', [])
    .factory('CustomEvent', CustomEventFactory);
})();

service.js

(function () {
  'use strict';

  /**
   * This service centralize the operations about the current station
   */
  function ServiceFactory (WUCustomEvent) {
    
    var Service = {
      doSomething: function (param) {
        return returnPromise()
        .then(function (result) {
          Service.notifyStationChanged(result);
        });
      }
    };

    CustomEvent.attach('EventName', Service);

    return wuStation;
  }

  ServiceFactory.$inject = [
    'CustomEvent'
  ];

  angular.module('Service', ['CustomEvent'])
    .factory('Service', ServiceFactory);
})();