gecko-dev/dom/webidl/ResizeObserver.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://drafts.csswg.org/resize-observer/
*/
enum ResizeObserverBoxOptions {
"border-box",
"content-box"
};
dictionary ResizeObserverOptions {
ResizeObserverBoxOptions box = "content-box";
};
[Constructor(ResizeObserverCallback callback),
Exposed=Window,
Pref="layout.css.resizeobserver.enabled"]
interface ResizeObserver {
[Throws]
void observe(Element target, optional ResizeObserverOptions options = {});
[Throws]
void unobserve(Element target);
void disconnect();
};
callback ResizeObserverCallback = void (sequence<ResizeObserverEntry> entries, ResizeObserver observer);
[Pref="layout.css.resizeobserver.enabled"]
interface ResizeObserverEntry {
readonly attribute Element target;
readonly attribute DOMRectReadOnly contentRect;
readonly attribute ResizeObserverSize borderBoxSize;
readonly attribute ResizeObserverSize contentBoxSize;
};
[Pref="layout.css.resizeobserver.enabled"]
interface ResizeObserverSize {
readonly attribute unrestricted double inlineSize;
readonly attribute unrestricted double blockSize;
};