Re: SVG labelling issue with ARIA

But won't the redundant aria-labelledby override the native labelling 
mechanism so when browsers implement the multi-lingual title switch it 
will require removing that aria-labelledby? Or does SVG work differently 
so the native mechanism takes precedence over the aria-labelledby?

On 4/21/2016 2:45 PM, Amelia Bellamy-Royds wrote:
> I really don't see this as an issue for SVG specifically.  As Jason 
> says, SVG (and the SVG Accessibility API Mapping spec) should solve 
> this problem.
>
> Ideally, you would not be using aria-labelledby in this case, you 
> would be using the native labelling mechanism as defined in SVG and 
> SVG-AAM.  Adding aria-labelledby pointing to a <title> is currently an 
> unfortunate hack required to deal with browsers who do not support 
> <title> natively.
>
> Yes, it's unfortunate that this fallback hack can't "polyfill" the new 
> SVG multilingual title-switch functionality, but the multilingual 
> title switch was designed to have a simple SVG 1.1 fallback anyway: 
> use the first <title> element.  So if you are going to add the 
> redundant aria-labelledby attribute for fallback support, it should 
> point to the first <title>.  That way, screen readers get the same 
> text as visual users with tooltips on a browser that doesn't support 
> the new feature (currently all of them).
>
> Hopefully, browsers will implement both the multi-lingual title/desc 
> behavior and proper SVG accessibility mappings together in the near 
> future, and this ceases to be an issue.
>
> Now, a secondary question is whether ARIA should implement its own 
> general mechanism to provide multiple translations of alternative 
> text.  But that would need to use a different mechanism than just a 
> list of values in aria-labelledby, which already has a valid meaning.

-- 
Regards, James

Oracle <http://www.oracle.com>
James Nurthen | Principal Engineer, Accessibility
Phone: +1 650 506 6781 <tel:+1%20650%20506%206781> | Mobile: +1 415 987 
1918 <tel:+1%20415%20987%201918> | Video: james.nurthen@oracle.com 
<sip:james.nurthen@oracle.com>
Oracle Corporate Architecture
500 Oracle Parkway | Redwood Cty, CA 94065
Green Oracle <http://www.oracle.com/commitment> Oracle is committed to 
developing practices and products that help protect the environment