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Re: ISSUE-30 (Longdesc) Change Proposal

From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
Date: Thu, 29 Oct 2009 01:33:08 +0100
Message-ID: <4AE8E2C4.4090406@xn--mlform-iua.no>
To: Jonas Sicking <jonas@sicking.cc>
CC: Henri Sivonen <hsivonen@iki.fi>, John Foliot <jfoliot@stanford.edu>, Charles McCathieNevile <chaals@opera.com>, public-html@w3.org
Leif Halvard Silli On 09-10-29 00.34:

> Jonas Sicking On 09-10-29 00.19:
> 
>> On Wed, Oct 28, 2009 at 4:36 AM, Henri Sivonen <hsivonen@iki.fi> wrote:
>>> On Oct 28, 2009, at 00:01, Jonas Sicking wrote:
>>>
>>>> <p id="desc" hidden>
>>>>  ...description here...
>>>> </p>
>>> This is problematic, because the hidden attribute is suppose to hide content
>>> on all media--including pruning the content out of the accessible tree.
>> I don't think that affects IDREFS going into such a part of the page
>> though. @hidden doesn't conceptually remove things from the page, for
>> example scripts still execute, plugins and iframes still load, DOM is
>> still created etc.
>>
>> It just removes that part of the page from the normal flow. The same
>> way as "display:none" does.
> 
> Display:none is used to remove things from all media. Including 
> screen readers. Something that works the same way obviously is a 
> nonstarter.


I want to correct myself - ARIA says this: [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, assistive technology users won't 
receive the hidden information, but an author should to be able to 
explicitly override that and include the hidden information."

[1] http://www.w3.org/TR/wai-aria/#textequivalentcomputation
-- 
leif halvard silli
Received on Thursday, 29 October 2009 00:33:46 GMT

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