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Re: Please insert an explicit requirement for user agents to convert aria-activedescendant into MSAA for focus and location

From: Jim Allan <jimallan@tsbvi.edu>
Date: Thu, 20 Oct 2011 14:44:52 -0500
Message-ID: <CA+=z1WkqXK2D++a3WFT=zDKrRaFeiwwRp1ab9w0_Xt3+MagkQw@mail.gmail.com>
To: Jonathan Avila <jon.avila@ssbbartgroup.com>, WAI-ua <w3c-wai-ua@w3.org>, David Bolter <david.bolter@gmail.com>
Jonathan,
Please review UAAG20 4.1.1, 4.1.2, and 4.1.6
http://www.w3.org/WAI/UA/2011/ED-IMPLEMENTING-UAAG20-20110922/#gl-AT-access
these Success Criteria cover the browser supporting the platform
accessibility architecture (eg. MSAA)(4.1.1), reporting the name,
role, state, value, and description of elements to the accessibility
architecture (4.1.2), and  providing the bounding dimensions and
coordinates of rendered onscreen elements (the group made a word
change today to make this bit more clear...it will be in the next
draft) (4.1.6).

Though we don't cover your request explicitly, we believe your point
is covered by the above. Your request is very specific. UAAG20, as it
is currently written, is a much higher level document and doesn't go
to the depth of detail that was expressed in your request.

Jim

On Thu, Oct 20, 2011 at 12:35 PM, Jonathan Avila
<jon.avila@ssbbartgroup.com> wrote:
> Jim, thanks for the link  Do you think this covers exposing the
> programmatic location?  This seems to really focus on keyboard
> accessibility and not the programmatic location.
>
> Best Regards,
>
> Jonathan
>
> -----Original Message-----
> From: Jim Allan [mailto:jimallan@tsbvi.edu]
> Sent: Thursday, October 20, 2011 1:31 PM
> To: jon.avila@ssbbartgroup.com
> Subject: Fwd: Please insert an explicit requirement for user agents to
> convert aria-activedescendant into MSAA for focus and location
>
> FYI
>
>
> ---------- Forwarded message ----------
> From: david bolter <david.bolter@gmail.com>
> Date: Thu, Oct 20, 2011 at 10:53 AM
> Subject: Re: Please insert an explicit requirement for user agents to
> convert  aria-activedescendant into MSAA for focus and location
> To: Jeanne Spellman <jeanne@w3.org>
> Cc: User Agent Working Group <w3c-wai-ua@w3.org>
>
>
> I think this is covered here:
> http://www.w3.org/WAI/PF/aria-implementation/#keyboard-focus_aria-activede
> scendant
>
> Cheers,
> David
>
> On Thu, Oct 20, 2011 at 11:05 AM, Jeanne Spellman <jeanne@w3.org> wrote:
>>
>> A public comment.
>>
>> -------- Original Message --------
>> Subject: Please insert an explicit requirement for user agents to
>> convert  aria-activedescendant into MSAA for focus and location
>> Resent-Date: Thu, 20 Oct 2011 14:42:19 +0000
>> Resent-From: public-uaag2-comments@w3.org
>> Date: Thu, 20 Oct 2011 10:39:09 -0400
>> From: Jonathan Avila <jon.avila@ssbbartgroup.com>
>> To: public-uaag2-comments@w3.org
>>
>> Many authors are creating structures like toolbars where the whole
>> toolbar has a tabIndex=0 and the ARIA spec recommends
>> aria-activedescendant and keyboard handling to move among toolbar
>> items.  This is cited as an acceptable way rather than applying to
>> tabIndex=0 to the currently focused item.  The way I read the current
>> requirements is that the user agent would only need to provide focus
>> indication and coordinates for the entire toolbar and not the actual
>> active-descendant because it doesn’t have a level of keyboard access
>> that the user agent can detect except for the presence of the
> aria-activedescendant attribute.
>>
>> Several user agents do appear to support this correctly such as IE and
>> Firefox, however, it would appear safest if this need would explicitly
>> be called out.  This affects users with low vision who use screen
>> magnification software.  This software would rely on location
>> information for proper tracking.
>>
>> An example of the technique with radio button is provided below:
>>
>> http://oaa-accessibility.org/example/29/
>>
>>
>>
>> Best Regards,
>>
>>
>>
>> Jonathan
>>
>>
>
>
>
>
> --
> Jim Allan, Accessibility Coordinator & Webmaster Texas School for the
> Blind and Visually Impaired
> 1100 W. 45th St., Austin, Texas 78756
> voice 512.206.9315    fax: 512.206.9264  http://www.tsbvi.edu/ "We shape
> our tools and thereafter our tools shape us." McLuhan, 1964
>



-- 
Jim Allan, Accessibility Coordinator & Webmaster
Texas School for the Blind and Visually Impaired
1100 W. 45th St., Austin, Texas 78756
voice 512.206.9315    fax: 512.206.9264  http://www.tsbvi.edu/
"We shape our tools and thereafter our tools shape us." McLuhan, 1964
Received on Thursday, 20 October 2011 19:45:28 GMT

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