Use description for Mozilla dialogs instead of our own getDialogText code

[nvaccessAuto]

Reported by jteh on 2010-04-21 07:56
If aria-describedby is set on an ARIA dialog, Mozilla will expose this as the description. We should use this in preference to our own getDialogText code.

Test cases: tests 2 and 3 at http://www.accessibleculture.org/testing/aria/alertdialog/

Considerations:

• Do we somehow stop our Dialog behavior from being used or do we tweak the Dialog behavior to not bother with getDialogText if description is valid?
• Are there any cases where other dialogs provide a useless description? If so, we don't want to do this for all dialogs, only Mozilla ones.

[nvaccessAuto]

Comment 1 by jteh on 2010-04-21 08:03
Actually, probably a bug; we really should use information that is given to us for free. :)

[nvaccessAuto]

Comment 2 by jteh on 2010-04-22 05:26
Implemented in 3056065.

We were unable to find any dialogs that expose a pointless description. If some are found, we will need to special case them or reconsider this fix.
Changes:
State: closed

[nvaccessAuto]

Comment 3 by hhillen on 2010-05-20 14:23
It seems this issue is still occurring or occurring again in Firefox 3.7. For the provided test cases the dialog descriptions are no longer announced by NVDA, even though they are exposed in MSAA
Changes:
State: reopened

[nvaccessAuto]

Comment 4 by jteh on 2010-05-20 21:41
Broken support in Firefox 3.7 is known and is because of MozillaBug:539252. See also MozillaBug:561924. Unfortunately, I suspect that NVDA will break with some version of Firefox no matter what we do.

[nvaccessAuto]

Comment 6 by jteh on 2010-07-28 06:02
Fixed in 60c9860 without breaking Firefox 3.6. Yay!
Changes:
State: closed