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    MSAA Object Attributes

    « AT APIs Support Page

    Introduction

    MSAA doesn't have a way to expose object attributes. In Gecko some object attributes are still exposed via the text in IAccessible::getDescription(). This technique is only used to support group attributes. This is a terrible hack that Mozilla still supports because older screen readers depend on it, but in the future it may be removed in favor of IA2 object attributes and groupPosition().

    • if accessible object has group attributes and children then the accDescription is in the format of "L:level, :posinset of :setsize with :childcount"
    • if accessible object has group attributes but hasn't children then the accDescription is in the format of "L:level, :posinset of :setsize"
    • if accessible object has posinset and setsize attributes then the accDescription is in the format of ":posinset of :setsize"
    • otherwise a normal description is used

    Document Tags and Contributors

    Contributors to this page: Sheppy, Aaronlev, Surkov.alexander
    Last updated by: Sheppy,