- From: Jon Gunderson <jongund@ux1.cso.uiuc.edu>
- Date: Tue, 29 Feb 2000 08:46:03 -0600
- To: w3c-wai-ua@w3.org
Responses in JRG: >1) We are expressing a user-interface requirement, not a programmatic > access requirement. Checkpoint 5.2 already requires programmatic > access to user interface controls. > >2) I don't think 1.5 is meant to require a text equivalent for each > message to the user. I think that text is a useful technique that > enables different output modalities. Note that programmatic access > to UI controls is covered by checkpoint 5.2 JRG: I think this was the practical meaning of the original checkpoint. Even though 5.2 talks about programmatic access, if the original information is a graphic or a sound, the AT will only get the graphic or sound reference. So a message dialog box in screen reader sounf like graphic, graphic and OK button. If the graphics were images conveying the message. Without some type of text equivalent the screen reader my have programmatic access, but the programmatic information will not have the information in a form it can translate to speech. I think that Checkpoint 1.5 is really the analog of WCGL requirements for alternative equivalents, except that here we want alternative redundency. > >3) I don't think that the requirement is for a user agent to provide > a user interface controls, say, both graphically and through audio > (but not speech if speech is not supported). > >So what is this requirement supposed to say? A previous incarnation >of the checkpoint (from the Last Call draft >http://www.w3.org/TR/1999/WD-WAI-USERAGENT-19991105/) suggests that >it's really about messages through the UI: > > ><NEW PROPOSAL> > 1.5 Ensure that user agent-initiated messages to the user > (e.g., informational messages, warnings, error messages, etc.) > are available through all output channels supported by the user > interface. ></NEW PROPOSAL> JRG: This seems to contradict item 3 of your requirements. This seems to say if you use any sounds, then all messages must use sound. Jon Gunderson, Ph.D., ATP Coordinator of Assistive Communication and Information Technology Chair, W3C WAI User Agent Working Group Division of Rehabilitation - Education Services 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 Tuesday, 29 February 2000 09:48:33 UTC