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RE: TPAC Presentation on Decentralized Extensibility

From: Kelly Ford <Kelly.Ford@microsoft.com>
Date: Wed, 4 Nov 2009 17:45:13 +0000
To: Markku Hakkinen <markku.hakkinen@gmail.com>
CC: WAI-UA list <w3c-wai-ua@w3.org>
Message-ID: <3386240A0CB7B345B60441C3B253B2A104B39066@TK5EX14MBXW652.wingroup.windeploy.ntdev.microsoft.com>
I do think there does need to be some more guidance from WAI around this area.

ARIA is in a way an example of extensibility and if you look at everything that had to happen for that to be successful, we'd need largely that same set of actions for other extensibility points.

This includes:
*Define your extensibility
*Define your accessibility model
*Figure out how you are going to add accessibility - do it yourself or map it to existing accessibility APIs.  ARIA did a mapping.
*Work with user agents to get this support either directly or through a plugin.

We need to open a discussion with PF on this. I know they have opinions on this.


This includes:

-----Original Message-----
From: Markku Hakkinen [mailto:markku.hakkinen@gmail.com] 
Sent: Wednesday, November 04, 2009 9:29 AM
To: Kelly Ford
Cc: WAI-UA list
Subject: Re: TPAC Presentation on Decentralized Extensibility

The challenge will be for the AT discover the meaning/intent of these
extensions.  Either the extension has to be defined with accessibility
meta information built in, and discoverable, or define additional ARIA
roles to describe these new extensions.

As with MathML, specific browser plug-ins are likely needed for many extensions.

Does WAI need Accessibility Guidelines for Distributed Extensibility?


On Wed, Nov 4, 2009 at 8:58 AM, Kelly Ford <Kelly.Ford@microsoft.com> wrote:
> Hello,
> TPAC today is giving a presentation on Decentralized Extensibility.  An
> introduction to the situation and pros/cons with slides is at
> http://lists.w3.org/Archives/Public/www-archive/2009Nov/0003.html
> We should understand the implications of this for UAAG.  I know one side is
> that this could be very bad because the User Agent will have a tough time
> knowing what's going on.  On the other hand one might say that if you are
> going to do this Decentralized Extensibility, then accessibility is part of
> what you need to consider.
> Kelly
Received on Wednesday, 4 November 2009 17:45:56 UTC

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