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Re: Next events meeting: 17 Jan 2002 @ 4pm ET

From: Jon Gunderson <jongund@uiuc.edu>
Date: Fri, 04 Jan 2002 14:19:37 -0600
Message-Id: <5.1.0.14.2.20020104141242.0563fce0@staff.uiuc.edu>
To: "Jim Ley" <jim@jibbering.com>, <w3c-wai-ua@w3.org>
Jim,
A mousedown attached to the body element is usually useless (from an 
accessibility perspective) since any element in the document can respond to 
it.  While technically you could test every element and trigger mouse down, 
this would be a usability nightmare.  That is why UAAG only requires 
activation of events associated with explicit event handlers of an 
element.  The event bubbling issue has been discussed in the past [1] and 
this was our resolution to the problem.  So at least one boolean query must 
only provide event handler information that is explicitly associated with a 
particular element (or is it node?).

Jon

[1] http://www.w3.org/WAI/UA/1999/06/wai-ua-telecon-19990602.html

At 05:45 PM 1/4/2002 +0000, Jim Ley wrote:
> > Todo: The WAI groups need to provide a use case of when it's useful
> >   to know that an event handler was declared on the current node
> >   and not an ancestor.
>
>Is this not necessary to make the representation of the events to the
>user easier, for example, when reaching a body element (say) with an
>onmousedown event attached, a voice user, may be informed by a prompt
>that mousedown is possible, you wouldn't then want the UA to prompt on
>every child node, which is all that a Boolean check would give is it not?
>
>Jim.

Jon Gunderson, Ph.D., ATP
Coordinator of Assistive Communication and Information Technology
Division of Rehabilitation - Education Services
MC-574
College of Applied Life Studies
University of Illinois at Urbana/Champaign
1207 S. Oak Street, Champaign, IL  61820

Voice: (217) 244-5870
Fax: (217) 333-0248

E-mail: jongund@uiuc.edu

WWW: http://www.staff.uiuc.edu/~jongund
WWW: http://www.w3.org/wai/ua
Received on Friday, 4 January 2002 15:19:43 GMT

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