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[Bug 12243] New: Warn when ARIA-describedby/-labelledby points to interactive/form associated content

From: <bugzilla@jessica.w3.org>
Date: Sat, 05 Mar 2011 04:02:13 +0000
To: public-html-bugzilla@w3.org
Message-ID: <bug-12243-2486@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=12243

           Summary: Warn when ARIA-describedby/-labelledby points to
                    interactive/form associated content
           Product: HTML WG
           Version: unspecified
          Platform: All
               URL: http://dev.w3.org/html5/spec/content-models.html#annot
                    ations-for-assistive-technology-products-aria
        OS/Version: All
            Status: NEW
          Keywords: a11y
          Severity: normal
          Priority: P2
         Component: HTML5 spec (editor: Ian Hickson)
        AssignedTo: ian@hixie.ch
        ReportedBy: xn--mlform-iua@xn--mlform-iua.no
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-wg-issue-tracking@w3.org,
                    public-html@w3.org


aria-describedby/aria-labelledby:  

   During the @longdesc debate it became apparent that some HTML wg members
thought that one could point from an <img> element to an anchor elemt with the 
@aria-describedby or @aria-labelledby, in order to get the effect that the link
became accessible as a link.

   However, this is not the case: According to ARIA 1.0, any element pointed to
via @aria-labelledby and @aria-describedby, is presented to the user in the
same way that the @alt attribute is presented. Thus, all the AT user would get,
would be a dead link text - the text without the link.

   Since HTMLwg members made this error, it is likely that "normal authors"
will also make the same error. Conformance checkers should therefore act up,
when aria-describedby/aria-labelledby point to interactive or forms related
content. In case it _could_ be useful now and then, a warning - and not an
error message - could be enough.

References: 
    Internactive content: 
http://dev.w3.org/html5/spec/content-models#interactive-content-0
    Form associated content
http://dev.w3.org/html5/spec/forms#form-associated-element

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Received on Saturday, 5 March 2011 04:02:15 GMT

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