RE: suggestions for new roles and properties in ARIA next

John,
So is aria-description like a aria-label (or title attribute) ... i.e. it is
not displayed on screen?
Then, is it available all the time like the alt to the screen reader user or
can it be accessed only when one chooses to do so  like the longdesc? Then
one needs to be  aware that a particular img has a more detailed
description.
Or will it be rendered in the browser so that some sighted  mouse users or
keyboard users can access it if they wish?
Thanks,
Sailesh Panchang
Tel 571-449-3576

-----Original Message-----
From: wai-xtech-request@w3.org [mailto:wai-xtech-request@w3.org] On Behalf
Of John Foliot
Sent: Wednesday, April 20, 2011 3:39 PM
To: 'James Craig'; 'Steve Faulkner'
Cc: 'W3C WAI-XTECH'; 'Richard Schwerdtfeger'
Subject: RE: suggestions for new roles and properties in ARIA next

James Craig wrote:
> 
> >> Kind of seems like you're stretching description to support the
> semantics of @summary and maybe @longdesc. What makes you certain this
> necessary?
> >
> > my thinking is that there are use cases where a developer would want
> > to provide info to AT users which is redundant for non AT users, but
> > is more a description than a name. having to place this information
> > somewhere else and then refernece via describedby can be a pain.
> 
> Can you give a specific example (using real text, not lorem ipsum) of
> where this might be needed? I'd just like to come up with a defensible
> case that cannot be done another way, or one that would gain
> significant benefit over the alternative if done this way.

Hi James,

Taking a stab at this request:

<img
src="http://macdailynews.files.wordpress.com/2011/02/110201_nielsen_01.png
" alt="Line Graph - Mobile Operating System Share, US Q4 '09 - Q4 '10"
aria-description="The graph shows the rapid growth of Android from 2% to
27% market share, a 11% decline for Blackberry OS to 27%, and a relatively
flat pattern for iOS at 28% over a 14 month period.">

(image source:
http://macdailynews.com/2011/02/01/nielsen_q410_u-s-_mobile_os_market_shar
e_apple_ios_28_rim_blackberry_27_goo/) 

I note that data supplied in the aria-description - notably the before and
after percentages - are not spelled out in the associated article, as
those numbers are 'obvious' to sighted users reading the article. 

Would this meet your use-case request?

JF

Received on Wednesday, 20 April 2011 20:27:52 UTC