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

From: Bryan Garaventa <bryan.garaventa@whatsock.com>
Date: Wed, 30 May 2012 10:00:32 -0700
Message-ID: <3A94FC69A6574BB6A90978B758D1CD30@WAMPAS>
To: <w3c-wai-ig@w3.org>
Well, here is my reply. If I'm incorrect about this, let me know.

----- Original Message ----- 
From: "NVDA Trac" <noreply+nvdaTrac@nvaccess.org>
Cc: <nvda-dev@lists.nvaccess.org>
Sent: Wednesday, May 30, 2012 9:53 AM
Subject: Re: [NVDA] #2390: NVDA doesn't handle role=dialog with supporting 
ARIA attributes according to spec


> #2390: NVDA doesn't handle role=dialog with supporting ARIA attributes 
> according
> to spec
> -------------------------------+------------------------
>        Reporter:  bgaraventa  |       Owner:
>            Type:  defect      |      Status:  new
>        Priority:  minor       |   Milestone:
>       Component:  Core        |     Version:  2012.2rc1
>      Resolution:              |    Keywords:  ARIA
> Operating system:  Windows XP  |  Blocked by:
>        Blocking:              |
> -------------------------------+------------------------
>
> Comment (by bgaraventa):
>
> I understand what you said about alertdialog, however dialog and
> alertdialog are not the same widget type. If they were the same, there
> would be no need for two separate roles in the spec.
>
> alertdialog is meant to have its content announced automatically, whereas
> dialogs are not. There are cases where both are valuable implementations.
>
> The problem here is that NVDA is enforcing alertdialog behavior
> regardless, and ignoring cases when a simple dialog is more accessible.
>
> The case for making role=presentation only apply to direct descendants
> doesn't work in practice, especially when you have other role types in the
> mix.
>
> E.G
>
> <div role=presentation>
> <ul role=listbox>
> ... Countries List ...
> </ul>
> </div>
>
> Since you can't change the roles of an object without rerendering the
> object, this is the only way to prevent the list from being included, but
> if you are only including the first level of descendants, then none of the
> list items are included in the calculation.
>
> This is also true for more complex controls like data tables, ARIA grids,
> and so on. There has to be a way of roping off content like this
> programmatically to ensure accessibility.
>
> -- 
> Ticket URL: <http://www.nvda-project.org/ticket/2390#comment:8>
> NVDA <http://www.nvda-project.org/>
> A free and open-source screen reader for Windows
> 
Received on Wednesday, 30 May 2012 17:01:10 GMT

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