text: /**
   * @ngdoc service
   * @name AQ.factory:viewport
   *
   * @description
   * Factory stores viewport settings.
   */
  AQ.factory('viewport', function () {
    'use strict';
  
    var viewport = {};
  
    /**
     * @ngdoc property
     * @name AQ.factory:viewport#history
     * @propertyOf AQ.factory:viewport
     * @type {Object}
     *
     * @description
     * History of current/previous states (with params).
     */
    viewport.history = {};
  
    return viewport;
  });
  