W3C home > Mailing lists > Public > public-aria@w3.org > January 2016

Re: ACTION-1380 and ACTION-1700

From: Richard Schwerdtfeger <richschwer@gmail.com>
Date: Tue, 26 Jan 2016 12:05:09 -0600
Cc: Rich Schwerdtfeger <richschwer@gmail.com>, public-aria@w3.org
Message-Id: <3717228A-BFAA-458F-9C06-2AB0CA560FB8@gmail.com>
To: Joseph Scheuhammer <clown@alum.mit.edu>
Thanks for the revisions. I did not mean that the browser should expose the DOM for the embedded graphics document per the loss of keyboard navigation. I am referring to the embedding of the actual SVG document by the author. 

Revised text: 

When the <img> is used to refer to either a raster image (e.g. <img src=“foo.jpg”>) or a vector graphics image <img src=“foo.svg”> it is treated as a single entity with all descendant elements being presentational. This is regardless of whether the target graphic has descendant elements that would normally be exposed to assistive technologies, such as with an SVG document. Consequently, using a role=“presentation” or role=“none” on an <img> element is equivalent to using aria-hidden=“true”. If it is possible to make the descendant elements accessible the author SHOULD embed the document directly within the host document without it being referred to by <img>. 


be inserted before the text found in role="presentation":
 
"For any element with an explicit or inherited role of presentation, user agents MUST ignore any non-global, role-specific WAI-ARIA states and properties. However, the user agent MUST always expose global WAI-ARIA states and properties to accessibility APIs, even if an element has an explicit or inherited role of presentation."




> On Jan 26, 2016, at 9:21 AM, Joseph Scheuhammer <clown@alum.mit.edu> wrote:
> 
> On 2016-01-26 10:14 AM, Joseph Scheuhammer wrote:
>> These two sentences are slightly garbled.  I think you mean:
>> 
>> "
>> Consequently, using a role=“presentation” or role=“none” on an <img> element is equivalent to using aria-hidden=“true”. If it is possible to make the descendent elements accessible, the user agent SHOULD embed the DOM representing those descendants directly within the host document.
>> " 
> 
> Another clarification to make it easier for the reader, namely, say how role="presentation" and aria-hidden="true" are equivalent in this case:
> 
> "
> Consequently, using a role=“presentation” or role=“none” on an <img> element is equivalent to using aria-hidden=“true”, where the <img> is not exposed to accessibility APIs. If it is possible to make the descendent elements accessible, the user agent SHOULD embed the DOM representing those descendants directly within the host document.
> "
> 
> Or, maybe I'm beating a dead horse.
> 
> -- 
> ;;;;joseph.
> 
> 'Die Wahrheit ist Irgendwo da Draußen. Wieder.'
>                 - C. Carter -
> 


Received on Tuesday, 26 January 2016 18:05:39 UTC

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