PerformanceContainerTiming.webidl

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/* -*- Mode: IDL; tab-width: 2; indent-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://wicg.github.io/container-timing/

*/

[Pref="dom.enable_container_timing",

 Exposed=Window]

interface PerformanceContainerTiming : PerformanceEntry {

    readonly attribute DOMString identifier;

    readonly attribute DOMRectReadOnly intersectionRect;

    readonly attribute unsigned long long size;

    readonly attribute DOMHighResTimeStamp firstRenderTime;

    // The spec types lastPaintedElement as HTMLElement?, but non-HTML content

    // (e.g. an SVG image) can paint into a container and be the largest

    // contributor; see https://github.com/WICG/container-timing/issues/71.

    readonly attribute Element? lastPaintedElement;

    readonly attribute HTMLElement? rootElement;

    [Default] object toJSON();

};

PerformanceContainerTiming includes PaintTimingMixin;