PerformanceObserver.webidl

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/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this file,

 * You can obtain one at http://mozilla.org/MPL/2.0/.

 * The origin of this IDL file is

 * https://w3c.github.io/performance-timeline/#the-performanceobserver-interface

*/

dictionary PerformanceObserverInit {

  sequence<DOMString> entryTypes;

  DOMString type;

  boolean buffered;

  [Pref="dom.enable_event_timing"]

  DOMHighResTimeStamp durationThreshold;

};

callback PerformanceObserverCallback = undefined (PerformanceObserverEntryList entries,

                                                  PerformanceObserver observer);

[Pref="dom.enable_performance_observer",

 Exposed=(Window,Worker)]

interface PerformanceObserver {

    [Throws]

    constructor(PerformanceObserverCallback callback);

    [Throws] undefined observe(optional PerformanceObserverInit options = {});

    undefined disconnect();

    PerformanceEntryList takeRecords();

    static readonly attribute object supportedEntryTypes;

};