- From: Sean B. Palmer <sean@mysterylights.com>
- Date: Wed, 29 Nov 2000 21:44:22 -0000
- To: <w3c-wai-er-ig@w3.org>
- Cc: "Leonard R. Kasday" <kasday@acm.org>
I just read the "Notes On Making Classes Accessible" document. I haven't had so much fun reading a W3C related "product" since m12n went to CR [but for opposite reasons!] :-) Still, I did have one quibble:- [[[ The question remains: how to associate title with class. It could be done via RDF. For example, to associate the title "priority 1 checkpoint" with p1 <rdf:RDF> xmlns:rdf="http://www.w3.organizations/1999/02/22-rdf-syntax-ns#" xmlns:s="http://www.w3.organizations/class titles/"> <rdf:Description about="http://www.w3.organizations/wai-classes/p1"> <s:title>Priority 1 checkpoint </s:title> </rdf:Description> </rdf:RDF> ]]] - http://www.w3.org/WAI/ER/IG/classuse.html This RDF example doesn't quite make sense...even the RDF namespace is incorrect for some reason (and it doesn't parse on SiRPAC [1]). Anyway, the notion is a valid one, and it got me wondering what the best way to associate classes with "titles" using RDF is. Hence I came up with this little bit of RDF:- <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"> <rdf:Description rdf:about="[@class='p1']"> <rdfs:label>Priority 1 Checkpoint</rdfs:label> <rdfs:isDefinedBy rdf:resource="http://www.w3.org/TR/WCAG10/#priorities" /> </rdf:Description> </rdf:RDF> Now, try going to SiRPAC [1] and pasting that little bit of code in, and it gives you a nice response with RDF graphs and so on. [I'd like to have attached the image to this email, but I'm not sure what the status on attachments is]. I have to admit that this is a pretty neat use of RDF. [[[ However, from a practical point of view, it's simpler to say .p1 {title: "priority 1 checkpoint" } ]]] - ibid. I agree that until the use of RDF becomes more widespread (and valid in XHTML!) we need an alternative. Looking at this makes me wonder why you don't use HTML titles, or at least:- .p1:before { content: "<span title=\"Priority 1 Checkpoint\">"; } .p1:after { content: "</span>"; } But it would be nice to have some kind of description and comments mechanism in CSS. Another good thing to have would be an 'alt' property (I think the CSS & FP WG are considering that one). Lastly, it says in the document "Users shall be able to choose any class and then step through all elements of a particular title..."; could someone explain that for me (preferably with examples)? P.S. Here are the triples from my RDF example:- triple('http://www.w3.org/2000/01/rdf-schema#label', '[@class='p1']', 'Priority 1 Checkpoint'). triple('http://www.w3.org/2000/01/rdf-schema#isDefinedBy', '[@class='p1']', 'http://www.w3.org/TR/WCAG10/#priorities'). [1] SiRPAC - http://www.w3.org/RDF/Implementations/SiRPAC/ Kindest Regards, Sean B. Palmer http://xhtml.waptechinfo.com/swr/ http://www.w3.org/WAI/ [ERT/GL/PF] "Perhaps, but let's not get bogged down in semantics." - Homer J. Simpson, BABF07.
Received on Wednesday, 29 November 2000 16:56:23 UTC