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Re: SVG 1.2 Comment: Accessibility: event handling

From: Jonathan Chetwynd <j.chetwynd@btinternet.com>
Date: Wed, 17 Nov 2004 10:26:21 +0000
Message-Id: <205DA5D3-3883-11D9-BD79-000A95C7D298@btinternet.com>
Cc: "dean Jackson" <dean@w3.org>, "SVG \(www\) list" <www-svg@w3.org>
To: "Will Pearson" <will-pearson@tiscali.co.uk>

Will,

perhaps we could tighten up this request? how about:

"Please provide generic event examples, including some keyboard 
examples as only referring to mouse examples sets a poor standard for 
accessibility"

regards

Jonathan Chetwynd
http://www.peepo.co.uk     "It's easy to use"
irc://freenode/accessibility
On 17 Nov 2004, at 03:21, Will Pearson wrote:


Hi Jonathan;

The problems with scripted menus results from access technology being
unaware that the screen has been updated by some Java script.

I think, that if all changes were to be placed in the document model, 
and
the SVG ua handle exploration of the SVG document, then there wouldn't 
be
any problems.  This depends on how the AT got it's information, but 
that's
something for the AT vendors to sort out.

I do agree, that some keyboard event examples would be good.  There's a 
lot
of people who don't use mice for whatever reason, and keyboard 
navigation,
especially for documant exploration, is a pre-requisite for 
accessibility.

Will
----- Original Message -----
From: "Jonathan Chetwynd" <j.chetwynd@btinternet.com>
To: "SVG (www) list" <www-svg@w3.org>
Cc: "dean Jackson" <dean@w3.org>
Sent: Tuesday, November 16, 2004 1:25 PM
Subject: SVG 1.2 Comment: Accessibility: event handling


>
> Dean,
>
> The continued use of mouse events in examples as for instance:
> http://www.w3.org/TR/SVG12/painting.html#overlay-example
> is a concern. This example particularly relevant as there has been
> lengthy and unresolved discussions around accessible drop down lists in
> the html/css/script communities. The example appears to assume mouse
> skills, together with drag skills, which many find difficult to
> impossible*.
>
> Would it be helpful if there was a more detailed explanation of event
> handling in the SVG1.2 document with an example, maybe using a keyboard
> to navigate a drop-down list?
>
> if so, could we please up date this and other examples to demonstrate
> the improved XML event handling being offered?
> http://www.w3.org/TR/SVG12/events.html#handler-element
>
> regards
>
> Jonathan Chetwynd
> http://www.peepo.co.uk     "It's easy to use"
> irc://freenode/accessibility
>
> *It is also not coherent, as one cannot make a selection, the mouse
> must be down to see the list.
> perhaps onmouseover, with option to click for list, with an X to
> dismiss, and click again to select.
> plus keyboard access.
> drop down lists aren't a simple concept, so one cannot expect to have a
> simple demonstration, that is accessible.
>
>
>
Received on Wednesday, 17 November 2004 10:26:55 UTC

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