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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - AX: attributes to retrieve focusable and editable ancestors"
href="https://bugs.webkit.org/show_bug.cgi?id=155554#c13">Comment # 13</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - AX: attributes to retrieve focusable and editable ancestors"
href="https://bugs.webkit.org/show_bug.cgi?id=155554">bug 155554</a>
from <span class="vcard"><a class="email" href="mailto:d_russell@apple.com" title="Doug Russell <d_russell@apple.com>"> <span class="fn">Doug Russell</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=155554#c12">comment #12</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=155554#c11">comment #11</a>)
> > (In reply to <a href="show_bug.cgi?id=155554#c10">comment #10</a>)
> > > (In reply to <a href="show_bug.cgi?id=155554#c9">comment #9</a>)
> > > > Created <span class=""><a href="attachment.cgi?id=274244&action=diff" name="attach_274244" title="Patch">attachment 274244</a> <a href="attachment.cgi?id=274244&action=edit" title="Patch">[details]</a></span>
> > > > Patch
> > >
> > > what is the purpose of this patch? what will it be used for?
> > >
> > > this looks like it also add a lot of extra cycles to web retrieval, if these
> > > are now three new attributes on every element, that will run up the parent
> > > chain independently for every call
> >
> > The purpose is to simplify the logic that decides if a focus change should
> > be alerted to a user or if we've simply moved between focusable subelements.
>
> and that is happening inside VoiceOver now?</span >
VoiceOver currently uses some unreliable heuristics based on roles and frames that this is meant to replace.
<span class="quote">>
> Will VO fetch these on demand or automatically for all elements?</span >
Only on demand.
I think the only place where this is adding overhead is in the list of supported attributes growing by three entries and a couple more if statements in accessibilityAttributeValue</pre>
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