[ARIA][Review Requested] Action-1591: Checkbox role doesn't list aria-readonly

As per the 25 June ARIA concall, aria-readonly should apply to checkbox,
menuitemcheckbox, menuitemradio, and switch; it should not, however,
apply to radio. To accomplish this:

* Make radio a subclass of input instead of checkbox
* Add aria-readonly as a supported property of checkbox

It turns out that aria-checked was both required and inherited by radio,
so changing the superclass simply removed the redundant inheritance.

https://rawgit.com/w3c/aria/action-1591/aria/aria.html#aria-readonly

--joanie (who thought, based on the meeting, it would be a bigger task)

Received on Thursday, 25 June 2015 21:39:28 UTC