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Re: use of aria-hidden to provide a text description not visible on the page.

From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
Date: Fri, 10 Sep 2010 17:33:55 +0200
To: Steven Faulkner <faulkner.steve@gmail.com>
Cc: W3C WAI-XTECH <wai-xtech@w3.org>, HTML Accessibility Task Force <public-html-a11y@w3.org>, Richard Schwerdtfeger <schwer@us.ibm.com>
Message-ID: <20100910173355030530.998ea9b6@xn--mlform-iua.no>
Did you by "should it be given that the div is hidden?" mean to ask if 
ARIA should treat an element with the @hidden boolean the same way as 
it would treat an element with the @aria-hidden?

(This reminds me about Jonas' recent suggestion in the @longdesc 
debate, that it should be possible to point to a @hidden element via 
aria-labelledby/-describedby.)

Leif


Steven Faulkner, Fri, 10 Sep 2010 15:47:09 +0100:
> Note: also exposed as an accessible decription in Safari on Mac and 
> chrome on windows.
>  
> regards
> Stevef
> 
> On 10 September 2010 15:36, Steven Faulkner 
> <faulkner.steve@gmail.com> wrote:
>> Hi all,
>> the code below references a hidden div element with a description. 
>> The description text string is provided in the accessible 
>> description property in MSAA and Ia2 in firefox, should it be given 
>> that the div is hidden?
>>  
>> <img alt="bottle" aria-describedby="x"> 
>> <div aria-hidden="true" style="display:none">
>> blue bottle with a rusty lid
>> </div>
>>  
>>  
>>  the following from the WAI-ARIA spec 
>> [http://www.w3.org/TR/wai-aria/complete#namecalculation] suggests it 
>> is OK.
>> "The text alternative for a given node is computed as follows:
>> 	1.	Skip hidden elements unless the author specifies to use them via 
>> an aria-labelledby or aria-describedby being used in the current 
>> computation. By default, users of assistive technologies won't 
>> receive the hidden information, but an author will be able to 
>> explicitly override that and include the hidden information. "
>> If so it is a useful method of providing descriptive information for 
>> AT users.
>> 
>> -- 
>> with regards
>> 
>> Steve Faulkner
>> Technical Director - TPG Europe
>> Director - Web Accessibility Tools Consortium
>>  
>> www.paciellogroup.com | www.wat-c.org
>> Web Accessibility Toolbar - 
>> http://www.paciellogroup.com/resources/wat-ie-about.html
> 
> 
> 
> -- 
> with regards
> 
> Steve Faulkner
> Technical Director - TPG Europe
> Director - Web Accessibility Tools Consortium
>  
> www.paciellogroup.com | www.wat-c.org
> Web Accessibility Toolbar - 
> http://www.paciellogroup.com/resources/wat-ie-about.html
Received on Friday, 10 September 2010 15:34:34 UTC

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