Function Browser

test/angular/1.7/angular.js:6538–6843

* @param {object} window The global window object. * @param {object} document jQuery wrapped document. * @param {object} $log window.console or an object with the same interface. * @param {object} $sniffer $sniffer service

(window, document, $log, $sniffer, $$taskTrackerFactory)

 * @param {object} $sniffer $sniffer service
 */
function Browser(window, document, $log, $sniffer, $$taskTrackerFactory) {
  var self = this,
      location = window.location,
      history = window.history,
      setTimeout = window.setTimeout,
      clearTimeout = window.clearTimeout,
      pendingDeferIds = {},
      taskTracker = $$taskTrackerFactory($log);

  self.isMock = false;

  //////////////////////////////////////////////////////////////
  // Task-tracking API
  //////////////////////////////////////////////////////////////

  // TODO(vojta): remove this temporary api
  self.$$completeOutstandingRequest = taskTracker.completeTask;
  self.$$incOutstandingRequestCount = taskTracker.incTaskCount;

  // TODO(vojta): prefix this method with $$ ?
  self.notifyWhenNoOutstandingRequests = taskTracker.notifyWhenNoPendingTasks;

  //////////////////////////////////////////////////////////////
  // URL API
  //////////////////////////////////////////////////////////////

  var cachedState, lastHistoryState,
      lastBrowserUrl = location.href,
      baseElement = document.find('base'),
      pendingLocation = null,
      getCurrentState = !$sniffer.history ? noop : function getCurrentState() {
        try {
          return history.state;
        } catch (e) {
          // MSIE can reportedly throw when there is no state (UNCONFIRMED).
        }
      };

  cacheState();

  /**
   * @name $browser#url
   *
   * @description
   * GETTER:
   * Without any argument, this method just returns current value of `location.href` (with a
   * trailing `#` stripped of if the hash is empty).
   *
   * SETTER:
   * With at least one argument, this method sets url to new value.
   * If html5 history api supported, `pushState`/`replaceState` is used, otherwise
   * `location.href`/`location.replace` is used.
   * Returns its own instance to allow chaining.
   *
   * NOTE: this api is intended for use only by the `$location` service. Please use the
   * {@link ng.$location $location service} to change url.
   *
   * @param {string} url New url (when used as setter)