[Webkit-unassigned] [Bug 140916] New: AX: [ATK] Implement support for new AtkRole types for MathML

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=140916

            Bug ID: 140916
           Summary: AX: [ATK] Implement support for new AtkRole types for
                    MathML
    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: jdiggs at igalia.com
                CC: webkit-bug-importer at group.apple.com

ATK 2.15.4 has four new roles applicable to MathML:
* ATK_ROLE_MATH_FRACTION
* ATK_ROLE_MATH_ROOT
* ATK_ROLE_SUBSCRIPT
* ATK_ROLE_SUPERSCRIPT

We should implement support for them.

Note that in the case of subscript and superscript, the {sub,super}script functionally is not the {msub,msup} element (which includes the base). Therefore, I think what makes the most sense is to expose the script container as ATK_ROLE_SECTION (the generic textblock role) and then expose its children (the functional sub/sup) using the new roles.

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