- From: Joseph Scheuhammer <clown@alum.mit.edu>
- Date: Tue, 09 Sep 2014 13:52:02 -0400
- To: Karl Groves <kgroves@paciellogroup.com>, James Craig <jcraig@apple.com>
- CC: Léonie Watson <LWatson@paciellogroup.com>, W3C WAI Protocols & Formats <public-pfwg@w3.org>
> So would the best practice be to place it on both the control and the
> section being expanded/ collapsed (IOW not either-or)?
That depends on the context or role. For a tree view [1], aria-expanded
on the controller is important, but it can't be applied to the exposed
children. Consider that the children themselves are potentially
expandable -- that is, they might have children as well. Thus, their
aria-expanded is set to true when they themselves are expanded, not
because their controller (parent) is expanded.
On the other hand, in the case of tablist [2], it's possible to place it
on both the controlling tab [3] and the controlled tabpanel [4] without
the above limitation.
[1] http://www.w3.org/TR/wai-aria/roles#tree
[2] http://www.w3.org/TR/wai-aria/roles#tablist
[3] http://www.w3.org/TR/wai-aria/roles#tab
[4] http://www.w3.org/TR/wai-aria/roles#tabpanel
--
;;;;joseph.
'Array(16).join("wat" - 1) + " Batman!"'
- G. Bernhardt -
Received on Tuesday, 9 September 2014 17:52:38 UTC