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html: Add the reflected 'sizes' IDL attribute for <image> (#39466)

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Add the reflected 'sizes' IDL attribute for <image> element's DOM
interface which defines image sizes for different page layouts.

See https://html.spec.whatwg.org/multipage/#dom-img-sizes

Testing: Improvements in the following tests
- custom-elements/reactions/customized-builtins/HTMLImageElement.html
- html/dom/idlharness.https.html
-
html/semantics/embedded-content/the-img-element/relevant-mutations.html

Signed-off-by: Andrei Volykhin <andrei.volykhin@gmail.com>
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Andrei Volykhin 2025-09-24 12:29:44 +03:00 • committed by GitHub
parent 72555de341
commit f91dc33350
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5 changed files with 7 additions and 18 deletions
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6
components/script/dom/html/htmlimageelement.rs
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@ -1670,6 +1670,12 @@ impl HTMLImageElementMethods<crate::DomTypeHolder> for HTMLImageElement {
// https://html.spec.whatwg.org/multipage/#dom-img-src
make_url_setter!(SetSrcset, "srcset");
// <https://html.spec.whatwg.org/multipage/#dom-img-sizes>
make_getter!(Sizes, "sizes");
// <https://html.spec.whatwg.org/multipage/#dom-img-sizes>
make_setter!(SetSizes, "sizes");
// https://html.spec.whatwg.org/multipage/#dom-img-crossOrigin
fn GetCrossOrigin(&self) -> Option<DOMString> {
reflect_cross_origin_attribute(self.upcast::<Element>())