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RE: SC 2.1.1 and server-side image maps

From: Gregg Vanderheiden <gv@trace.wisc.edu>
Date: Fri, 9 Feb 2007 10:25:21 -0600
To: "'Christophe Strobbe'" <christophe.strobbe@esat.kuleuven.be>, <w3c-wai-gl@w3.org>
Message-ID: <009b01c74c66$e647aa60$ae43c44b@NC84301>

Ah
Good catch

Will take a look at our wording.  Used to say component but may have gotten
edited along the way.

Will look at.


Gregg
 -- ------------------------------
Gregg C Vanderheiden Ph.D.



> -----Original Message-----
> From: w3c-wai-gl-request@w3.org
> [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Christophe Strobbe
> Sent: Friday, February 09, 2007 9:52 AM
> To: w3c-wai-gl@w3.org
> Subject: RE: SC 2.1.1 and server-side image maps
>
>
> Hello Gregg,
>
> At 02:04 9/02/2007, Gregg Vanderheiden wrote:
>
> >Content always applies to the Web Page, not to individual
> parts of it.
>
> OK, but we must be aware for the implications of this for SC
> 4.2.2 (bullet 1): "If content can be entered using the
> keyboard, then the content can be exited using the keyboard,"
> or in the editors' draft:
> "If focus can be moved to content using a keyboard interface,
> then focus can be moved away from that content using only a
> keyboard interface, and the method for doing so is described
> before the content is encountered and in a way that meets all
> Level 1 success criteria."
> I thought this should apply not only to the "web page"
> considered as a whole (i.e. you can enter the page and exit
> before interacting with any of the components in it), but
> also to each of the individual parts (text, image, Flash/Java
> object, ... so if you can enter an embedded Java applet using
> the keyboard, you can also exit it). Even if "content" does
> not apply to individual parts of web pages, this is an SC
> that can be met only if each of the individual parts (that
> can be entered using the keyboard) also meet it, but a
> server-side image map can't meet SC 2.1.1 by itself: it is
> the page that meets the SC by providing redundant text links
> for this specific "individual part".
>
>
> >The SC apply to Web pages.
> >
> >CS image maps are not mentioned because we don't have specific
> >requirements for them.  We could include some examples to show some
> >ways of handling our requirements but we don't have a way
> that you must use.
>
> My mistake: I meant server-side image maps instead of
> client-side ones.
>
> Best regards,
>
> Christophe
>
>
> >Does this clear your question?
> >
> >
> >Gregg
> >  -- ------------------------------
> >Gregg C Vanderheiden Ph.D.
> >
> >
> > > -----Original Message-----
> > > From: w3c-wai-gl-request@w3.org
> [mailto:w3c-wai-gl-request@w3.org]
> > > On Behalf Of Christophe Strobbe
> > > Sent: Thursday, February 08, 2007 3:01 PM
> > > To: w3c-wai-gl@w3.org
> > > Subject: SC 2.1.1 and server-side image maps
> > >
> > >
> > > Hi,
> > >
> > > During the review of certain WCAG 2.0 test cases in the BenToWeb
> > > project, we ran into the following issue.
> > > Success criterion 2.1.1 requires: "All functionality of
> the content
> > > is operable in a non-time-dependent manner through a keyboard
> > > interface, except where the task requires analog,
> time-dependent input."
> > > Appendix D of WCAG 2.0 (Comparison of WCAG 1.0
> checkpoints to WCAG
> > > 2.0 - non-normative) maps WCAG 1.0 checkpoint 1.2 to several WCAG
> > > 2.0 success criteria. Checkpoint 1.2 reads: "Provide
> redundant text
> > > links for each active region of a server-side image map." With
> > > regard to keyboard access, the checkpoint is mapped to success
> > > criterion 2.1.1, but it is not clear whether providing redundant
> > > text links is
> > > sufficient: if "content" (as in "All functionality of the
> > > content...") is interpreted as confined to the image map itself,
> > > server-side image maps always fail SC 2.1.1 and an
> alternative needs
> > > to be provided to meet SC 4.2.1, but if "content" is
> interpreted as
> > > the web page containing the image map, then redundant
> text links in
> > > the same web page would meet SC 2.2.1 and it would not be
> necessary
> > > to fall back on SC 4.2.1. However, client-side image maps are not
> > > mentioned in Understanding WCAG 2.0, nor in Techniques
> for WCAG 2.0.
> > > The June 2005 version of HTML Techniques for WCAG 2.0 contained a
> > > technique called "Text links for server-side image maps"[1] (for
> > > success criterion 2.4 L 1 SC 1), but it is not entirely clear if
> > > this would now be considered as a technique for SC 2.1.1
> or for SC 4.2.1.
> > >
> > > [1]
> > > http://www.w3.org/TR/2005/WD-WCAG20-HTML-TECHS-
> > > 20050630/Overview.html#ssim_textlinks
>
>
>
> --
> Christophe Strobbe
> K.U.Leuven - Departement of Electrical Engineering - Research
> Group on Document Architectures Kasteelpark Arenberg 10 -
> 3001 Leuven-Heverlee - BELGIUM
> tel: +32 16 32 85 51
> http://www.docarch.be/
>
>
> Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm
>
>
>
Received on Friday, 9 February 2007 16:25:34 GMT

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