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Re: DRAFT analysis of fallback mechanisms for embedded content ACTION-66

From: Laura Carlson <laura.lee.carlson@gmail.com>
Date: Thu, 25 Nov 2010 04:50:21 -0600
Message-ID: <AANLkTi=buQ8kEe+791Cmu6MB2FqWuemYEF3_bT-yMPMa@mail.gmail.com>
To: laura.lee.carlson@gmail.com
Cc: HTML Accessibility Task Force <public-html-a11y@w3.org>
Hi Michael,

Thank you very much for taking this on. Agreement on this document
could be a big step forward. A few comments:

It would be helpful if the term "fallback" was defined.

For alt and the image element the use of the word "fallback" has been
questioned. Three change proposals remove that term from the image
definition.

1. Rationale:
http://www.w3.org/html/wg/wiki/ChangeProposals/ImgElement20100510#Correcting_the_Definition
Suggested Text:
http://www.w3.org/html/wg/wiki/ChangeProposals/ImgElement20100510#Replace_the_Definition_of_the_Image_Element:

2. Rationale:
http://www.w3.org/html/wg/wiki/ChangeProposals/ImgElement20100504#Correcting_the_Definition_to_Provide_Equality
Suggested Text:
http://www.w3.org/html/wg/wiki/ChangeProposals/ImgElement20100504#Replace_the_Definition_of_the_Image_Element:

3. Rationale:
http://www.w3.org/html/wg/wiki/ChangeProposals/first_2_paragraphs_of_definition_of_img#Rationale
Suggested Text:
http://www.w3.org/html/wg/wiki/ChangeProposals/first_2_paragraphs_of_definition_of_img#Details

One change proposal does not remove term "fallback" from the image
definition. It states, "alternative text is not a first-class
citizen".
http://lists.w3.org/Archives/Public/public-html/2010Jul/0050.html

It would also be helpful if the phrase "(under dispute)" was
clarified. Do you mean Leif's Formal Objection or something else in
regard to longdesc? @aria-labelledby and @aria-describedby could also
be said to be "(under dispute)" as other change proposals and
documents question their use.

Best Regards,
Laura

On 11/24/10, Michael Cooper <cooper@w3.org> wrote:
> The attached file is a draft analysis of how fallback mechanisms are
> applied to various types of embedded content in HTML. The analysis is an
> important step towards determining where the support provided by the
> HTML specification needs to be extended or modified to ensure all
> accessibility use cases are covered. The analysis is prepared primarily
> by Michael Cooper, with input from members of the Bug Triage sub-team of
> the HTML Accessibility Task Force.
>
> This is a draft analyis put forth for discussion and should not be
> viewed as complete, final, or constituting a proposal in itself.
>
> This analysis relates to Bug 8885
> <http://www.w3.org/Bugs/Public/show_bug.cgi?id=8885> and executes
> ACTION-66 <http://www.w3.org/WAI/PF/HTML/track/actions/66>. As discussed
> on 5 November 2010
> <http://www.w3.org/2010/11/04-html-wg-minutes#item13>, preliminary work
> on this was done by the bug triage sub-team on 16 November 2010
> <http://www.w3.org/2010/11/16-a11y-bugs-minutes#item01> and 22 November
> 2010 <http://www.w3.org/2010/11/23-a11y-bugs-minutes#item02>, and it is
> now being taken to the task force for wider review and discussion.
>
> Michael
> --
>
> Michael Cooper
> Web Accessibility Specialist
> World Wide Web Consortium, Web Accessibility Initiative
> E-mail cooper@w3.org <mailto:cooper@w3.org>
> Information Page <http://www.w3.org/People/cooper/>
>
>


-- 
Laura L. Carlson
Received on Thursday, 25 November 2010 10:50:50 GMT

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