- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Thu, 22 Oct 2009 10:00:50 -0500
- To: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>
- Cc: Jonas Sicking <jonas@sicking.cc>, Lars Gunther <gunther@keryx.se>, Shelley Powers <shelley.just@gmail.com>, HTMLWG WG <public-html@w3.org>, W3C WAI-XTECH <wai-xtech@w3.org>
On Thu, Oct 22, 2009 at 9:49 AM, Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no> wrote: > Tab Atkins Jr. On 09-10-22 16.42: >> On Thu, Oct 22, 2009 at 9:32 AM, Leif Halvard Silli wrote: >>> Why should ARIA work any different from CSS? >>> >>> I think, in general, it only becomes difficult for authors, for spec >>> editors >>> - for everyone - if we mix what authors should do (semantics) with how >>> user >>> agents should act (parsing etc). >> >> Because ARIA and CSS are different things. Why should they work >> similarly? ARIA is nothing than a patch to help out users of ATs when >> authors use elements in novel ways, such as using <div>s to implement >> sliders. It's not meant as a general tool to be used by the average >> author - with luck, a normal author never has to get anywhere *near* >> ARIA, because they're using elements for what they're intended for. >> >> As well, it's really just more trouble than it's worth to restrict CSS >> to only apply 'conforming' styling - the operations are too low-level >> to sanely constrain. ARIA, on the other hand, is a high-level tool >> that *can* be sanely restricted. > > To make <h1 role="button"> non-conforming *is* to restrict how it can be > used and *is* to treat ARIA different from CSS. Indeed, I think it should be treated differently. Making it non-conforming is one step in that. > The only likeness between CSS and ARIA that I suggested, is that ARIA should > over-rule the default semantics, the same way that CSS should overrule > default styling. I still don't see why this should be allowed. Just use the closest proper element. Philip` pointed me to some of his raw data, at http://philip.html5.org/data/role-attributes-raw.txt, which is very helpful. This is every usage of @role across 425k pages. Scanning the list, you find only a handful of uses which are ARIA-related, and none of them are gross mispurposings of default element semantics. ~TJ
Received on Thursday, 22 October 2009 15:01:43 UTC