[Webkit-unassigned] [Bug 220534] New: AX: expose focusable elements even if element or ancestor has aria-hidden=true

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220534

            Bug ID: 220534
           Summary: AX: expose focusable elements even if element or
                    ancestor has aria-hidden=true
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jcraig at apple.com
                CC: webkit-bug-importer at group.apple.com

The AX tree inclusion section of ARIA now includes this line:

The accessibility tree inclusion section includes this line:
> [include in the accessibility tree…] "Elements that are focusable even if the element or one of its ancestor elements has its aria-hidden attribute set to true."

https://w3c.github.io/aria/#tree_inclusion


The ARIA WG discussed the "focusable" vs "expose only when focused" difference and came to the consensus that there were too many instances where authors did hidden focusable elements accidentally (including one recent report on the Benevity site). 

So as I understand it, the way to hide focusable elements would be to make not rendered, or explicitly not focusable.

Visible, but explicitly not focusable
<button tabindex=“-1" aria-hidden=“true">

Not rendered, and therefore implicitly not focusable.
<button style=“display:none;">

Also, once WebKit implements @inert, that would also be sufficient:
<div inert>
  <button aria-hidden=“true">this is inert, so not focusable among other things.. The aria-hidden is likely redundant here.

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