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Updated testing to allow Dojo

From: WCAG 2.0 Comment Form <nobody@w3.org>
Date: Mon, 4 Feb 2008 19:38:32 +0000 (GMT)
To: public-comments-wcag20@w3.org
Message-Id: <20080204193832.4BC4B6B5E9@tibor.w3.org>


Name: Andrew LaHart
Email: andrew.lahart@us.ibm.com
Affiliation: IBM
Document: TD
Item Number: F3
Part of Item: Tests
Comment Type: technical
Summary of Issue: Updated testing to allow Dojo
Comment (Including rationale for any proposed change):
 Dojo uses CSS images to convey information but it also provides the necessary information to assistive technology via ARIA. And, Dojo detects high contrast mode and replaces the background images with actual content when high contrast mode is detected.   However, Dojo would fail the test in this technique since there is no option in the test to provide the necessary alternatives.  Can we add some sort of exception or different testing to this failure?

Proposed Change:
Change the test procedure to say:  

1.      Examine all images added to the content via CSS.

2.      Check that the images do not convey important information.

3.      If an image does convey important information,  the information is provided to assistive technologies and is also available when the CSS image is not displayed.  



If step 2 and step 3 are both false - then the failure conditions exists. 
Received on Monday, 4 February 2008 19:38:40 UTC

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