dom/webidl/PerformanceObserver.webidl

   1 /* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   4  * You can obtain one at http://mozilla.org/MPL/2.0/.
   5  *
   6  * The origin of this IDL file is
   7  * https://w3c.github.io/performance-timeline/#the-performanceobserver-interface
   8  */
   9
  10 dictionary PerformanceObserverInit {
  11   sequence<DOMString> entryTypes;
  12   DOMString type;
  13   boolean buffered;
  14   [Pref="dom.enable_event_timing"]
  15   DOMHighResTimeStamp durationThreshold;
  16 };
  17
  18 callback PerformanceObserverCallback = undefined (PerformanceObserverEntryList entries,
  19                                                   PerformanceObserver observer);
  20
  21 [Pref="dom.enable_performance_observer",
  22  Exposed=(Window,Worker)]
  23 interface PerformanceObserver {
  24     [Throws]
  25     constructor(PerformanceObserverCallback callback);
  26
  27     [Throws] undefined observe(optional PerformanceObserverInit options = {});
  28     undefined disconnect();
  29     PerformanceEntryList takeRecords();
  30     static readonly attribute object supportedEntryTypes;
  31 };