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- Date: Tue, 07 Jun 2011 08:09:24 +0000
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http://www.w3.org/Bugs/Public/show_bug.cgi?id=9213 Laura Carlson <laura.lee.carlson@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |REOPENED Resolution|NEEDSINFO | --- Comment #5 from Laura Carlson <laura.lee.carlson@gmail.com> 2011-06-07 08:09:22 UTC --- A missing attribute would provide a practical method of detection, handling, and repair of missing text alternatives, after a conscious decision has been made by the author to deliberately publish images without text alternatives. It would: * Allow an image without alt text be honestly labeled for it is: missing, incomplete, lacking substance. * Affirm that the author did not (and does not intend to) provide a text alternative. * Provide a machine checkable mechanism to locate missing alt text/enable tools to quickly discern where "missing" has been used. * Afford a practical means to mitigate damages after all else has failed, allowing for crowdsourcing or metadata repair. AT would be at liberty to apply a crowdsourced definition, to scour image metadata or or both, since the AT knows that the author didn't apply a text alternative, it can inform the user as to the potential deficiency in the located text(s). * Support ethical accountability by promoting the development of responsible tools and by advocating an effective enabling environment. Jan Richards explained how this could work [1]: 1. the author drag-and-drops an image into an authoring tool (bypassing the usual insert dialog) 2. the authoring tool has implemented a "live" accessibility checker (not required by ATAG but a nice feature), so the image is immediately given a blue squiggly underline (similar to red underlining of spelling errors) to indicate no @alt value has been set. 3. BUT the author ignores the underlining, saves and close the document. 4. BUT the authoring tool has an accessibility option set to use the "missing" mechanism to validate, so when the author has failed to address the accessibility issue and the content is being closed, the tool adds @alt=" " and the "missing" mechanism. (Ordinarily adding " " to the @alt would be considered a repair of the alternative text, but the missing mechanism tells user agents to ignore it...so ATAG2 B.2.4.3 is met). It is possible to require a set of programmatically valid options which maintains the integrity of the markup and aids accessibility while addressing business needs. -- [1] http://lists.w3.org/Archives/Public/public-html/2009Aug/1009.html -- Configure bugmail: http://www.w3.org/Bugs/Public/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug.
Received on Tuesday, 7 June 2011 08:09:26 UTC