[Webkit-unassigned] [Bug 146407] New: AX: VoiceOver does not read munder/mover/munderover elements correctly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146407

            Bug ID: 146407
           Summary: AX: VoiceOver does not read munder/mover/munderover
                    elements correctly
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fred.wang at free.fr
                CC: cfleizach at apple.com, jcraig at apple.com,
                    webkit-bug-importer at group.apple.com

Testcases:

1) <math xmlns="http://www.w3.org/1998/Math/MathML"><munder><mi>a</mi><mi>b</mi></munder></math>
2) <math xmlns="http://www.w3.org/1998/Math/MathML"><mover><mi>a</mi><mi>b</mi></mover></math>
3) <math xmlns="http://www.w3.org/1998/Math/MathML"><munderover><mi>a</mi><mi>b</mi><mi>c</mi></munderover></math>

(or see http://trac.webkit.org/browser/trunk/LayoutTests/platform/mac/accessibility/mathml-elements.html)

WebKit exposes the accessible trees for munder/mover/munderover as

Role: AXMathRoleGroup
Subrole: AXMathUnderOver

and attributes AXMathBase, AXMathUnder and AXMathOver pointing to appropriate child accessible objects (base or under/over scripts).

Actual results:

1) a
2) a, with b underneath
3) a, with c underneath

Expected results:

1) a, with b underneath
2) a, with b above
3) a, with b underneath and c above.

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