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dom: Stub out the IntersectionObserver interface (#33989)

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This is the first step toward implementing the IntersectionObserver
interface. It adds stubs which are exposed when a preference is turned
on. This is enough to get some sites with `IntersectionObserver` to
start working.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
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Martin Robinson 2024-10-25 02:26:47 -07:00 • committed by GitHub
parent 1624530ffe
commit 3b5dc069ae
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components/script/dom/webidls/IntersectionObserverEntry.webidl Normal file
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/* 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 https://mozilla.org/MPL/2.0/. */
// https://w3c.github.io/IntersectionObserver/#intersection-observer-entry
[Pref="dom.intersection_observer.enabled", Exposed=(Window)]
interface IntersectionObserverEntry {
constructor(IntersectionObserverEntryInit intersectionObserverEntryInit);
readonly attribute DOMHighResTimeStamp time;
readonly attribute DOMRectReadOnly? rootBounds;
readonly attribute DOMRectReadOnly boundingClientRect;
readonly attribute DOMRectReadOnly intersectionRect;
readonly attribute boolean isIntersecting;
readonly attribute boolean isVisible;
readonly attribute double intersectionRatio;
readonly attribute Element target;
};
dictionary IntersectionObserverEntryInit {
required DOMHighResTimeStamp time;
required DOMRectInit rootBounds;
required DOMRectInit boundingClientRect;
required DOMRectInit intersectionRect;
required boolean isIntersecting;
required boolean isVisible;
required double intersectionRatio;
required Element target;
};