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Re: [Custom] Custom elements and ARIA

From: Simon Pieters <simonp@opera.com>
Date: Fri, 29 Aug 2014 13:25:06 +0200
To: "Steve Faulkner" <faulkner.steve@gmail.com>, "Domenic Denicola" <domenic@domenicdenicola.com>
Cc: public-webapps <public-webapps@w3.org>
Message-ID: <op.xlcpz4m9idj3kv@simons-mbp>
On Thu, 28 Aug 2014 16:57:00 +0200, Domenic Denicola  
<domenic@domenicdenicola.com> wrote:

> Hi Steve, thanks greatly for your help. It's clear now that I should  
> have reached out to you for your expertise directly before being very  
> wrong on a public mailing list :)
>
> From: Steve Faulkner <faulkner.steve@gmail.com>
>
>> It appears (please correct me) you have made the assumption that  
>> 'strong native semantics' for roles is a UA requirement? This is not  
>> the case (in the W3C HTML spec [1] at least, can't speak for where the  
>> WHATWG spec has gone in defining ARIA in HTML), they  are author  
>> conformance requirements.
>
> Yes, I was misled about that pretty badly. That changes things, as it  
> means there are no non-overridable roles or stoperties (as you show with  
> <hr role="menuitem">).

States and properties can be non-overridable, though, as I understand it.

[[
When a host language declares a WAI-ARIA [state/property] attribute to be  
in direct semantic conflict with a native attribute for a given element,  
user agents MUST ignore the WAI-ARIA attribute and instead use the host  
language attribute with the same implicit semantic.
]]
http://www.w3.org/TR/wai-aria/host_languages#host_general_conflict_header

> From my reading though, the default implicit ARIA semantics are still UA  
> requirements, right?

Yes.

> [...]

-- 
Simon Pieters
Opera Software
Received on Friday, 29 August 2014 11:25:38 UTC

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