W3C home > Mailing lists > Public > w3c-wai-ua@w3.org > April to June 2002

Re: Fwd: Re: Part II: Issues raised during Mac IE evaluation of UAAG 1.0

From: Jon Gunderson <jongund@uiuc.edu>
Date: Wed, 03 Apr 2002 11:16:21 -0600
Message-Id: <5.1.0.14.2.20020403104404.01dba0f0@staff.uiuc.edu>
To: David Poehlman <poehlman1@comcast.net>
Cc: w3c-wai-ua@w3.org
In general we use the following hierarchy for our checkpoints:

1. Provide user control
2. Use OS defaults
3. Allow the user to create and use profiles

The major problem with 10.3 right now is that the first clause on requiring 
defaults differing in more than just color is only required if the second 
clause on using OS settings is not available for the feature.  In the Mac 
or Windows environment developers can meet the 10.3 requirement by 
following OS conventions, rather than meet the first clause requirements.

What we have been saying in general in the document is to give users 
control of changing defaults and then ideally have profiles that users can 
load that are useful for major disability groups.

Jon


At 11:17 AM 4/3/2002 -0500, David Poehlman wrote:
>that not withstanding, defaults should not thwart accessibility?
>
>----- Original Message -----
>From: "Jon Gunderson" <jongund@uiuc.edu>
>To: "David Poehlman" <poehlman1@comcast.net>
>Cc: <w3c-wai-ua@w3.org>
>Sent: Wednesday, April 03, 2002 11:18 AM
>Subject: Re: Fwd: Re: Part II: Issues raised during Mac IE evaluation of
>UAAG 1.0
>
>
>We have lots of requirements for control, and we have a P1 requirement
>(checkpoint 12.2) that the documentation provide information on how to
>make
>these adjustments.
>
>Jon
>
>
>At 11:05 AM 4/3/2002 -0500, David Poehlman wrote:
> >if the default is something I cannot use, how do I know to adjust it?
> >
> >----- Original Message -----
> >From: "Ian B. Jacobs" <ij@w3.org>
> >To: "Jon Gunderson" <jongund@uiuc.edu>
> >Cc: <w3c-wai-ua@w3.org>
> >Sent: Wednesday, April 03, 2002 4:15 AM
> >Subject: Re: Fwd: Re: Part II: Issues raised during Mac IE evaluation
>of
> >UAAG 1.0
> >
> >
> >Jon Gunderson wrote:
> >
> > >
> > >> Date: Tue, 02 Apr 2002 17:34:35 -0600
> > >> To: "Ian B. Jacobs" <ij@w3.org>
> > >> From: Jon Gunderson <jongund@uiuc.edu>
> > >> Subject: Re: Part II: Issues raised during Mac IE evaluation of
>UAAG
> >1.0
> > >>
> > >> By requiring something other than color it will make the
>information
> > >> much more salient to the user.  If I can't see colors or
>distinguish
> > >> them easily, I need something else to determine that this element
>is
> > >> different from the elements that are around it.
> >
> >
> >But note that the requirement is about the *default* highlight
> >and not the highlight mechanism in general.
> >
> >We don't have a requirement that says "Provide at least one
> >non-color highlight style." It's framed in terms of the default
> >style. Is there a (P1) reason why the default style can't be color
> >if there's an alternative mechanism?
> >
> >In checkpoint 10.3, we require that 5 values differ in presentation.
> >Suppose that someone could only use black and white.
> >That would mean that,f or example, the user agent could use black
> >text on white background for ordinary text, reverse video for
> >selection, and would need three other mechanisms for the other
> >three values (focus, fee links, recently visited links). This could
> >be done with lines (e.g., underline, boxes, and overlines). This
> >is really the extreme case where a visual user is only capable of
> >using black and white. Does this happen in practice? As soon as
> >the user can use a few more color combinations, then the requirement
> >for underlines and boxes goes away as a P1 requirement.
> >
> >I can't find any argument to justify the requirement as is since
> >it's tied to the *default* presentation. I think that the 5 values
> >can be rendered using color by default, but as long as the user can
> >override the colors, the user should be ok (at a P1 level). It's
> >possible that there should be a requirement for rendering styles
> >not based on foreground and background colors for those people who
> >can only use black, white, and a few more colors. If this is not
> >a real requirement, then I have a hard time justifying a P1
> >requirement for styles other than colors.
> >
> >I note that browsers already provide non-color highlight mechanisms
> >for some of the values (e.g., links are underlined). But UA
> >and operating environment conventions do not force non-color
> >highlight mechanisms by default for all five values. And I don't
> >think we should require that they do.
> >
> >   _ Ian
> >
> >
> >--
> >Ian Jacobs (ij@w3.org)   http://www.w3.org/People/Jacobs
> >Tel:                     +1 718 260-9447
>
>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

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 Wednesday, 3 April 2002 12:12:25 GMT

This archive was generated by hypermail 2.2.0+W3C-0.50 : Tuesday, 27 October 2009 06:51:07 GMT