W3C home > Mailing lists > Public > wai-xtech@w3.org > April 2012

Re: Alternative to @aria-describedAT: <a role=img>

From: Alexander Surkov <surkov.alexander@gmail.com>
Date: Tue, 10 Apr 2012 19:06:18 +0900
Message-ID: <CA+epNseJszjaGC-E1+ZS=nj=+gSmrq32sBO734qM9srQ_0q73Q@mail.gmail.com>
To: Benjamin Hawkes-Lewis <bhawkeslewis@googlemail.com>
Cc: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>, wai-xtech@w3.org, faulkner.steve@gmail.com
> I think there's no conflict here?
>
> HTML5 says authors should not use role="img" on <a href> elements.
> This conformance requirement affects authors only.
>
> ARIA says that when authors nevertheless do use role="img" on <a href>
> elements, the semantics of "img" take precedence for the purposes of
> ARIA processing. This conformance requirement affects user agents
> only.

That's right. No conflict but a problem perhaps.
Alex.


On Tue, Apr 10, 2012 at 12:04 AM, Benjamin Hawkes-Lewis
<bhawkeslewis@googlemail.com> wrote:
> On Mon, Apr 9, 2012 at 3:27 PM, Alexander Surkov
> <surkov.alexander@gmail.com> wrote:
>>>> Also look at:
>>>> "user agents MUST use the semantic of the WAI-ARIA role for
>>>> processing, not the native semantic, unless the role requires WAI-ARIA
>>>> states and properties whose attributes are explicitly forbidden on the
>>>> native element by the host language"
>>>
>>> So what this text says is, that in the case of <a role=img href>, then
>>> there is no "MUST use the semantic of the WAI-ARIA role". Why is there
>>> no MUST? Answer: Because HTML5 - currently - explicitly disallows
>>> role="img" for the <a> element.
>>
>> I might miss something but ARIA implementation guide says about
>> WAI-ARIA states and properties (not about roles). So even if HTML 5
>> disallows role="img" for the <a> then ARIA implementation guide
>> requires UA to ignore <a> native semantics. But I would love to see
>> ARIA implementation guide respecting what HTML5 says.
>
> I think there's no conflict here?
>
> HTML5 says authors should not use role="img" on <a href> elements.
> This conformance requirement affects authors only.
>
> ARIA says that when authors nevertheless do use role="img" on <a href>
> elements, the semantics of "img" take precedence for the purposes of
> ARIA processing. This conformance requirement affects user agents
> only.
>
>>> <div><a href="LinkURL"><img src="URL" alt=""></a>
>>> <a href="LinkURL">Veteran reporter Wallace remembered</a></div>
>>>
>>> Question: Why - in your opinion - do the AT user need to perceive the
>>> first link above as a link?
>>
>> Because it's a link I guess.
>
> I'd say because the sets of people looking at the page and the people
> using AT are not exclusive. For example, if you're a screen magnifier
> user and you press the tab key to move focus to the image link, you
> may want your text-to-speech software to read out the text that
> describes the link destination.
>
> --
> Benjamin Hawkes-Lewis
Received on Tuesday, 10 April 2012 10:06:50 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Friday, 27 April 2012 13:16:16 GMT