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Re: ISSUE-30 (Longdesc) Change Proposal

From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
Date: Mon, 02 Nov 2009 17:46:01 +0100
Message-ID: <4AEF0CC9.9040102@xn--mlform-iua.no>
To: Jonas Sicking <jonas@sicking.cc>
CC: Joshue O Connor <joshue.oconnor@cfit.ie>, John Foliot <jfoliot@stanford.edu>, Charles McCathieNevile <chaals@opera.com>, public-html@w3.org
Jonas Sicking On 09-10-30 22.51:

> On Fri, Oct 30, 2009 at 2:20 PM, Leif Halvard Silli:
>> Joshue O Connor On 09-10-30 17.33:
>>> Jonas Sicking wrote:
>>>> On Fri, Oct 30, 2009 at 9:01 AM, Joshue O Connor <joshue.oconnor@cfit.ie>
>>>> wrote:
>>>>>> For the cases when rendering the link is not desired, the link can
>>>>>> simply be hidden using CSS or the @hidden attribute. Or you can place
>>>>>> the link in the <head> which is never rendered.
>>>>> Again, UAs that would need to find this link, may not be able to do so
>>>>> currently. That could be changed as new behaviour could be modeled
>>>>> depending on context. Again, this is partially a user agent issue.
>>>> I'm not sure I follow. If the IDREF pointed to the link, why wouldn't
>>>> it be able to find it? A simple call to document.getElementById should
>>>> do the trick. That wouldn't be affected if the link his hidden or not.
>>>> This is what the Firefox implementation of aria-describedby does.
>>> Ok, cool.
>> Even cooler:
>> 1. Using Firefox, go to http://www.cssquirrel.com/comic/
>> 2. Point at the comic strip, and bring up the contextual menu.
>>   (On the mac, Control-Click on the image)
>> 3. Select the Properties in the contextual menu that popped up - as a result
>> you get a dialog window listing "Image properties".
>> At the bottom of the "Image properties" list there is the label
>> "Description" which contains the longdesc URI.
>> But where are the traces of the aria-describedby? It ain't there. Just
>> remove the longdesc attribute, and the description field is gone.
>> Aria-describedby isn't a property of the image.
> This is the feature that is removed from future versions of firefox
> (don't remember if it's in 3.6 or 3.7). See discussion in [1] as to
> why it was removed (hint: it's not because we hate blind people).

I think I was using beta of 3.6. Off topic: I liked Properties, IE 
has it too. At least one in that thread already wishes it back...

> However both aria-describedby and longdesc are still implemented in
> the accessibility code, and thus exposed to AT software.

This is closer to my point: Firefox implements @longdesc, and it 
is accessible, via scripting etc.

> [1] https://bugzilla.mozilla.org/show_bug.cgi?id=513147

leif halvard silli
Received on Monday, 2 November 2009 16:46:44 UTC

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