- From: Janina Sajka <janina@rednote.net>
- Date: Tue, 13 Mar 2012 12:17:04 -0400
- To: Silvia Pfeiffer <silviapfeiffer1@gmail.com>
- Cc: Charles McCathieNevile <chaals@opera.com>, John Foliot <john@foliot.ca>, Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no>, RichardSchwerdtfeger <schwer@us.ibm.com>, W3C WAI-XTECH <wai-xtech@w3.org>, HTMLAccessibility Task Force <public-html-a11y@w3.org>
Silvia Pfeiffer writes: > The ePub spec is indeed quite a good start. I'd like to see > requirements on what the browser is required to do with the attribute, > e.g. the list stated in https://bugs.webkit.org/show_bug.cgi?id=10448. > A good start, perhaps. But also a troubling development from the ARIA timeline perspective. Notice that the Epub DescribedAt supports multiple URIs. In our brief discussion of the underlying use cases, as we understand them currently, we found we are unconvinced that this simply providing multiple URIs, space delimited, is either sufficient or the best way to address the requirement. On what basis does the user agent choose among the URIs: * When the choice is I18N based? * When the choise is grade level based? * When the choice is some other heuristic? Let me note that PF and DAISY/IDPF have agreed to discuss architecting the Epub requirements even before this topic came up in email here. Regretably, because of various travel schedules, we are unable to hold that call until early April. Let me note further that this "multiple target list" requirement could conceivably postpone ARIA-DescribedAt to ARIA 2.0 by reason of this added complexity. We've just begun considering the implications here--and they're significantly more involved than a basic HTML longdesc replacement feature applicable to various elements. Janina -- Janina Sajka, Phone: +1.443.300.2200 sip:janina@asterisk.rednote.net Chair, Open Accessibility janina@a11y.org Linux Foundation http://a11y.org Chair, Protocols & Formats Web Accessibility Initiative http://www.w3.org/wai/pf World Wide Web Consortium (W3C)
Received on Tuesday, 13 March 2012 16:18:43 UTC