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[Bug 16586] New: Accessibility API Role Mapping Matrix missing math and svg elements

From: <bugzilla@jessica.w3.org>
Date: Fri, 30 Mar 2012 19:17:57 +0000
To: public-html@w3.org
Message-ID: <bug-16586-2495@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=16586

           Summary: Accessibility API Role Mapping Matrix missing math and
                    svg elements
           Product: HTML WG
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: HTML a11y APIs (editor: Steve Faulkner, Cynthia
                    Shelly)
        AssignedTo: faulkner.steve@gmail.com
        ReportedBy: neils@dessci.com
         QAContact: public-html-bugzilla@w3.org
                CC: mike@w3.org, public-html-wg-issue-tracking@w3.org,
                    public-html@w3.org


This is a comment/bug report on [1].

Section 3 (HTML element to Accessibility API Role Mapping Matrix) contains a
mapping of elements to accessibility roles.  I see that both math and svg are
missing from that "matrix".  I don't know enough to suggest mappings for svg,
but for math, the following entries are appropriate:

HTML 4:  no
HTML 5:  yes
WAI-ARIA: math role
MSAA:  ROLE_SYSTEM_EQUATION

I don't have direct knowledge of the other values, but most are found in
section 5.4.1 in [2].  The children of the math element (eg, mrow, mfrac)
should NOT be exposed to AT.

Note that [3] mentions that for legacy content that use images for math, using
role=math is appropriate.  The alt should be TeX or MathML and the
aria-describedby should be used to describe the math.  I think this should be
mentioned as part of the description of the img element mapping (section 5.6?)


Neil Soiffer
[speaking for myself -- I have not run this by the MathML WG]


[1] http://www.w3.org/TR/2012/WD-html-aapi-20120329
[2] http://www.w3.org/WAI/PF/aria-implementation
[3] http://www.w3.org/TR/wai-aria/roles#math

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Received on Saturday, 31 March 2012 03:09:59 UTC

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