- From: Gregg Vanderheiden <gv@trace.wisc.edu>
- Date: Mon, 5 Dec 2005 11:54:29 -0600
- To: "'Bailey, Bruce'" <Bruce.Bailey@ed.gov>
- Cc: "'Guide Lines list'" <w3c-wai-gl@w3.org>
- Message-ID: <003c01c5f9c4$f62d5740$77a5d846@NC6000BAK>
Comments below marked GV: Gregg _____ From: Bailey, Bruce [mailto:Bruce.Bailey@ed.gov] Subject: RE: From SUN Imagine a Java applet with a fair sized text entry area or two. GV: yes that would be the way to look at this. My question is this: Could a Java applet could ignore (probably not deliberately, but by accident of design) StickyKeys (or FilterKeys or SerialKeys or SoundSentry) within the domain of the Java applet? Or is the VM wholly dependant on the OS to pass text? Is a Java applet limited to "key up" event handlers, or can it watch for "key down" (and thus possibly prevent capitalization when StickyKeys is running on the OS)? GV: my understanding is that it is completely dependent on the OS to pass text. that is part of the 'security sandbox'. StickyKeys etc are implemented very low so that all apps pick them up. So unless the application was looking at timing of keyups and keydowns to specifically identify modifier keys that were consistently pressed a give amount of time before other keys and therefore must be done by machine or something - (which means the company is using heuristics specifically designed to bypass access features) I don't think it would be a problem. I wasn't thinking about Alt-Tab not working when I raised this question. I am not worried so much about assistive technology being turned off. I remain still a little anxious about the potential for accessibility features of the operating system to be ignored (which is what 1194.21(b) is about) within the virtual machine. Your contact at Sun may have considered this aspect as well, but the answer you quote back doesn't address this concern. GV: Not sure what you mean by alt tab problem. Do JAVA Applets prevent you from alt tabbing to other programs? Does alt tab work for real keys but not StickyKeys? If it doesn't work for either - then it isn't a StickyKeys or access feature problem. Only if it worked for real keys but not StickyKeys. I've not heard of that and am not sure how it could happen. Have you seen that? Gregg -----Original Message----- From: w3c-wai-gl-request@w3.org [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Gregg Vanderheiden Sent: Sunday, December 04, 2005 11:40 PM To: w3c-wai-gl@w3.org Subject: From SUN I asked Sun about the java applet question Here is what they said. "A Java applet cannot affect anything outside of the VM it is running in. It could have some affect on the web browser, to the extent the Java applet is still running. Alt-Tab away, it should have no effect." So it looks like a Java Applet can't override StickyKeys. So no need to add one for this. Gregg
Received on Monday, 5 December 2005 17:54:48 UTC