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Re: False aria-describedby expectations in ARIA Authoring Practices (longdesc)

From: Steve Faulkner <faulkner.steve@gmail.com>
Date: Sat, 23 Apr 2011 15:20:46 +0100
Message-ID: <BANLkTim8GWygyw9iBybuHcqbaXgyMm6QcQ@mail.gmail.com>
To: Leif H Silli <xn--mlform-iua@xn--mlform-iua.no>
Cc: mjs@apple.com, jonas@sicking.cc, cooper@w3.org, clown@alum.mit.edu, wai-xtech@w3.org, public-html@w3.org, schwer@us.ibm.com, dbolter@mozilla.com
>Does NVDA need that the browser provides more longdesk access than  Opera and iCab does? Is that technically enough? Or is their stance political?

from recollection they thought access via a context menu was fine, but
would need the image to be focusable so users could access the context
menu (note this is the same requirement for any keyboard user.


regards
steve

On 23 April 2011 14:59, Leif H Silli <xn--mlform-iua@xn--mlform-iua.no> wrote:
> Steve F. wrote:
>>
>> but how is this to be implemented and where? in the
>> browser or in the screen reader?
>>
>> we have at least one vendor (NVDA)  who has indicated they would not
>> implement  behaviour in their product to provide access to longdesc
>> (which is essentially a element specific version of what we are
>> talking about for describedby),
>
> Does NVDA need that the browser provides more longdesk access than  Opera
> and iCab does? Is that technically enough? Or is their stance political?
>
>> but would support it if the UI was
>> exposed via browsers.
>>
>> One of the issues with longdesc has been that it is not exposed by
>> browsers (other than the url string in the DOM). I consider that the
>> best chnace we have of making aria-describedby and/or longdesc useful
>> and usable is for the UI to be in the browser.
>
> Two ideas:
>
> 1) if @describedby points to anchor/area element without any link text, then
> AT won't present it to the user. This perhaps give opportunity to instead
> present it as a longdesk link.
>
> 2) another option could be to "move" the image to an invisible link:
> <img id=image role=presentation src=i alt="Lorem Ipsum" >
> <a role="img link" href=link aria-labelledby=image  ></a>
> --
> leif h silli



-- 
with regards

Steve Faulkner
Technical Director - TPG

www.paciellogroup.com | www.HTML5accessibility.com |
www.twitter.com/stevefaulkner
HTML5: Techniques for providing useful text alternatives -
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Received on Saturday, 23 April 2011 14:21:34 GMT

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