/Summary/: ARIA reflection is an extension of Element interface, which
provides a handy way to manage ARIA attributes on a DOM element, what
makes web authors life easier. Note, IDREF attributes part is not
included at this point (see https://github.com/whatwg/html/issues/4925).
/Bug/: https://bugzilla.mozilla.org/show_bug.cgi?id=1628418
/Standard/: https://w3c.github.io/aria/#idl-interface
/Platform coverage/: web
/Preference/: accessibility.ARIAReflection.enable
/DevTools bug/: no extra effort should be required since the interfaces
are extensions of Element interface and should be picked up
automatically by DevTools.
/Other browsers/:
* Safari shipped (/Aug 2018, https://bugs.webkit.org/show_bug.cgi?id=184676)
/
* Chrome shipped behind a flag (Jun 2018,
https://bugs.chromium.org/p/chromium/issues/detail?id=844540)
/web-platform-tests/:
https://searchfox.org/mozilla-central/source/testing/web-platform/tests/dom/nodes/aria-attribute-reflection.tentative.html
/Secure contexts/: security/privacy is scoped by the attribute
reflection
https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#reflecting-content-attributes-in-idl-attribute,
which shouldn't have any security/privacy issues, since API doesn't
allows anything beyond setAttribute/getAttribute.
/Is this feature enabled by default in sandboxed iframes?/ yes
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