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Re: [NVDA] #2390: NVDA doesn't handle role=dialog with supporting ARIA attributes according to spec

From: Bryan Garaventa <bryan.garaventa@whatsock.com>
Date: Tue, 29 May 2012 13:21:04 -0700
Message-ID: <3A7F572CD4A34B12BAE210D8FF3EEDA4@WAMPAS>
To: <w3c-wai-ig@w3.org>, "WebAIM Discussion List" <webaim-forum@list.webaim.org>
That's what I thought as well.

However it appears that the same behavior is being linked to role=dialog as 
well, even though they are different widget types.

This from the response at http://www.nvda-project.org/ticket/2390

"It's not clear from the spec as to how description should be handled for 
dialog, but it does refer to alertdialog as being related. Also, dialogs do 
typically have a caption/description."

If you would care to add your thoughts to the bug, I would appreciate it.


----- Original Message ----- 
From: "James Craig" <jcraig@apple.com>
To: "Bryan Garaventa" <bryan.garaventa@whatsock.com>
Cc: <w3c-wai-ig@w3.org>; "WebAIM Discussion List" 
<webaim-forum@list.webaim.org>
Sent: Tuesday, May 29, 2012 10:37 AM
Subject: Re: [NVDA] #2390: NVDA doesn't handle role=dialog with supporting 
ARIA attributes according to spec


> On May 29, 2012, at 10:19 AM, Bryan Garaventa 
> <bryan.garaventa@whatsock.com> wrote:
>
>> I'm forwarding this in case any of you want to chime in. This is 
>> regarding the bug at
>> http://www.nvda-project.org/ticket/2390#comment:6
>>
>> According to NVDA, widget control types such as role=dialog require not 
>> just an aria-label or aria-labelledby attribute, but also an 
>> aria-describedby attribute. I'm not able to locate where this exists in 
>> the user agent spec however, at http://www.w3.org/TR/wai-aria/roles
>
>
> Perhaps you are thinking of alertdialog, not dialog?
>
>>From #alertdialog http://www.w3.org/TR/wai-aria/roles#alertdialog : 
>>"Authors SHOULD use aria-describedby on an alertdialog to point to the 
>>alert message element in the dialog. If they do not, assistive 
>>technologies will resort to their internal recovery mechanism to determine 
>>the contents of an alert message."
>
> In plain English, this means that if the author doesn't explicitly define 
> what the alert message is, the AT can and should do the best job it can to 
> tell the user to what it *thinks* is the alert message.
>
> There is no requirement for an aria-describedby relationship on dialog. 
> There is an author "SHOULD" requirement for a label, but not a 
> description.
> http://www.w3.org/TR/wai-aria/roles#dialog
>
> In both cases, the author "SHOULD" requirement would generate a warning, 
> not an error, so AT should account for dialogs without labels or 
> descriptions as well.
>
> 
Received on Tuesday, 29 May 2012 20:21:37 GMT

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