- From: Al Gilman <asgilman@iamdigex.net>
- Date: Wed, 29 Sep 1999 15:03:23 -0400
- To: "Chris Ridpath" <chris.ridpath@utoronto.ca>, "Leonard R. Kasday" <kasday@acm.org>
- Cc: <w3c-wai-er-ig@w3.org>
At 02:23 PM 9/29/99 -0400, Chris Ridpath wrote: >For this version of A-Prompt, we won't be looking at what's in the style >sheets. I think we've got enough to do just implementing the WAI guidelines >in the HTML doc itself. For the next version we will check them. > >I hope that there's not very much the page author can do in the style sheet >to create inaccessible pages. There are definitely things that people can do in the stylesheet that express semantics that got left out of the markup. Failing to review the author's stylesheet along with the HTML is a functional shortfall, or a failure to do better, or some such thing. In the example cited if there are color differences and nothing else visible that marks the alternatives as different, then the colorblind individual is out of luck. Only by detecting the color difference in the stylesheet could A-Prompt discover this violation. The CLASS names that are in the HTML are sufficient. Unless the author also provides a B&W stylesheet with alternate treatment of the color-coded distinction, the document as shipped is broken as regards access. As Len was saying, the tool can't really evaluate whether the CLASS names capture the content of the styling or not, without having the author manually review the CLASS names themselves. This is recommended. There should be prompting in the authoring process which explains to the author that the style names should be expressive, not merely convenient. This is probably beyond what A-Prompt can do, but just as a spell checker has access to a dictionary and will usefully suggest words you might have meant, styling will not be accessible until the whole style management infrastructure gets the author engaged with received corpora of good style such as the Chicago Manual of Style or the Modern Language Association style guide for journal articles. There are two levels of challenge the author's style naming should be subjected to: a) does the name of the style (actually the CLASS token in the HTML, but this is what would appear in the author tool as the selector for styling) state the reason why this portion of the content is styled this way? If not, fix it. b) Is there a more general rationale that suffices as a rationale for this styling? If so, relax the class to the more general class so that it is more likely an alternate-media stylesheet will deal with this class already. Al > >Chris > > >----- Original Message ----- >From: Leonard R. Kasday <kasday@acm.org> >To: Al Gilman <asgilman@iamdigex.net> >Cc: <w3c-wai-er-ig@w3.org> >Sent: Wednesday, September 29, 1999 10:55 AM >Subject: Re: css abuse > > >> Also, re the objection to the subject line here, "css abuse" did not mean >> that css was abusive. It just meant that someone could abuse css to >> violate the guidelines, just as they could misuse practically any >valuable >> feature. >> >> Still, it shows I better stick to more sober subject lines in the future. >> >> Len >> ------- >> Leonard R. Kasday, Ph.D. >> Institute on Disabilities/UAP, and >> Department of Electrical Engineering >> Temple University >> >> Ritter Hall Annex, Room 423, Philadelphia, PA 19122 >> kasday@acm.org >> (215) 204-2247 (voice) >> (800) 750-7428 (TTY) >
Received on Wednesday, 29 September 1999 15:03:19 UTC