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Requesting Clarification re CR Exit Stacks Criteria

From: Janina Sajka <janina@rednote.net> (janina@rednote.net) <janina@rednote.net>
Date: Thu, 20 Sep 2012 15:28:09 -0400
To: Maciej Stachowiak <mjs@apple.com>
Cc: HTML Accessibility Task Force <public-html-a11y@w3.org>
Message-ID: <20120920192809.GA3093@opera.rednote.net>
I'm looking at the independent stacks criterion for CR exit and want to
ask about it in a11y related real world terms ...

1.)	We have cross platform user agents, e.g. Firefox available for
Windows, Android, Linux, etc.

Are these separate stacks? Or one stack? How do we know for sure, i.e.
the actual UI code is pretty different on each OS, is it not? Certainly,
the assistive technology involved is different.

On the other hand, the point of a cross-platform app like Firefox is to
reuse code as much as possible.

2.)	Are AT-SPI/ATK and IAccessible2 one stack or two? The latter is
a derivative of the former implemented in a separate OS. The AAPIs look
very similar, however.

3.)	What about KDE and GNOME on Linux/Unix? Two stacks or one? For
accessibility both use AT-SPI, though KDE does not use ATK in order to
talk to AT-SPI. The browser will clearly be different, yet the AT may be
the same for KDE and GNOME browsers, because of the common AT-SPI layer
(which is designed to support AT interoperability among toolkits).



Janina Sajka,	Phone:	+1.443.300.2200
		Email:	janina@rednote.net

The Linux Foundation
Chair, Open Accessibility:	http://a11y.org

The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI)
Chair,	Protocols & Formats	http://www.w3.org/wai/pf
	Indie UI			http://www.w3.org/WAI/IndieUI/
Received on Thursday, 20 September 2012 19:28:33 UTC

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