Aria attributes not covered in current IDL

[Garbee]

Looking over the spec, I see two attributes not covered that should be, aria-expanded and aria-controls. The use-case of these is making buttons that trigger expandable content like showing truncated entries or popups.

On a wider point however, do the attributes listed in https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Attributes at least provide enough coverage to get started with for a full spec IDL? Or is there some better place to go that lists out all the current aria attributes?

[nolanlawson]

It does seem like the spec should cover the full list of aria-* attributes, including those that make ID references. The missing ones I see are:

• aria-activedescendant
• aria-controls
• aria-describedby
• aria-details
• aria-errormessage
• aria-flowto
• aria-labelledby
• aria-describedby (mentioned in part of the spec but missing in another part)
• aria-owns

(There may be others; I didn't do an exhaustive search.)

AIUI, there is no technical limitation to support aria-*; it's just a matter of capturing them all in the proposal.

As mentioned in #13, we may also want to consider for and role.