Re: A presentational img?

The bug now asks for this text: [1] 

]]
  img element whose alt attribute's value is empty
  and whose ARIA text alternative computation [1]
  equals an empty string
  [1] http://www.w3.org/TR/wai-aria/complete#textalternativecomputation

 = presentation role    [[

NOTE: the table in HTML5 defines 'Strong native semantics and default 
implied ARIA semantics', [2] hence it should not be necessary to state 
the effect of role=presentation.

[1] http://www.w3.org/Bugs/Public/show_bug.cgi?id=12590#c12
[2] http://dev.w3.org/html5/spec/content-models#table-aria-strong


Leif H Silli

Leif Halvard Silli, Wed, 11 May 2011 00:12:37 +0200:
> James Craig, Tue, 10 May 2011 11:58:43 -0700:
> 
> Your message was delayed - didn't receive it before now. You have some 
> questions relating to the bug:
> 
>> On May 10, 2011, at 11:20 AM, Steve Faulkner wrote:
>> 
>>> hi james, just a point of clarification:
>>> 
>>> an <img> without alt is not mapped to role=presentation in HTML5
>>> 
>>> only <img alt="">
>> 
>> Okay good. Thanks for the clarification.
>> 
>> Even so, this is where the bug lies, correct?
>> 
>> <img src="contact.png" alt="" title="contact">
>> <img src="contact.png" alt="" aria-label="contact">
> 
> Yes, James, this is correct.
> 
>> Perhaps the bug could be updated so that if was presentational if:
>>>> * the author explicitly provided a role of presentation on the img 
>>>> tag, <img role="presentation">
> 
> This is already clear from HTML5, I believe.
> 
>>>> * the host language labeling mechanism (in this case @alt) equaled 
>>>> an empty string, *AND* the ARIA text alternative computation [1] 
>>>> equaled an empty string.
> 
> Ah, yes, that is a certainly a very good proposal. I will put that in 
> the bug, shortly.
> 
>> 1. ARIA text alternative computation: 
>> http://www.w3.org/TR/wai-aria/complete#textalternativecomputation
> 
> -- 
> Leif H Silli
>

Received on Tuesday, 10 May 2011 22:28:52 UTC