Re: Is there an aria-level=0 ?

Joseph Scheuhammer, Wed, 13 Mar 2013 11:01:41 -0400:
> On 2013-03-12 8:04 PM, James Craig wrote:
>> I don't have a strong preference one way or the other, but it seems 
>> like this should be raised as an issue on the UAIG.
> 
> The UAIG provides some guidance in the section on "Group Position" 
> [1].  Quoting the relevant text:
> 
>> aria-level, aria-posinset, and aria-setsize are all 1-based. ... If 
>> any of these properties are specified by the author as either "0" or 
>> a negative number, user agents SHOULD use "1" instead.
> 
> Note that it's a "SHOULD" and not a "MUST", meaning user agents might 
> have a valid reason to not set it to "1".  My guess is that FF is not 
> bothering because it takes more cycles to perform the correction than 
> it does to simply pass the value through to the AAPI.  But, that's 
> just a guess.  Anyone from FF know?
> 
> [1] 
> http://www.w3.org/WAI/PF/aria-implementation/#mapping_additional_position

Just want to add that it seems Safari has same behavior, in other 
contexts. Often in the same contexts. I have not investigated what it 
could be that makes them differ.
-- 
leif halvard silli

Received on Wednesday, 13 March 2013 15:12:16 UTC