Bug 22893 – get_accParent should try to retrieve parent AccessibilityObject, before calling upon window

• Component: Accessibility
• Status: RESOLVED FIXED

[Jonas Klink]

In AccessibleBase::get_accParent, the parent AccessibilityObject should first be attempted to be retrieved. Only if this fails should we query the WebView::AccessibleObjectFromWindow for an IAccessible implementation.

[Jonas Klink]

*** Bug 22895 has been marked as a duplicate of this bug. ***

[Jonas Klink]

Created attachment 26081 [details]
Fixes the issue described in this bug.

[Jon Honeycutt]

Comment on attachment 26081 [details]
Fixes the issue described in this bug.


>  
> +    AccessibilityObject* parentObj = m_object->parentObjectUnignored();
> +
> +    if (parentObj) {
> +        *parent = static_cast<IDispatch*>(wrapper(parentObj));
> +        (*parent)->AddRef();
> +        return S_OK;
> +    }
> +
>      return WebView::AccessibleObjectFromWindow(m_object->topDocumentFrameView()->hostWindow()->platformWindow(),
>          OBJID_WINDOW, __uuidof(IAccessible), reinterpret_cast<void**>(parent));
>  }

Our coding style prefers early returns, so this would be better written as:

if (!parentObject) {
    return WebView::AccessibleObjectFromWindow(m_object->topDocumentFrameView()->hostWindow()->platformWindow(),
        OBJID_WINDOW, __uuidof(IAccessible), reinterpret_cast<void**>(parent));
}
*parent = static_cast<IDispatch*>(wrapper(parentObj));
(*parent)->AddRef();
return S_OK;

The change looks correct, but it will need a layout test for the new behavior. r- for this reason.

Thanks for the patch, Jonas!

[Jon Honeycutt]

Created attachment 46734 [details]
patch

[Jon Honeycutt]

Committed in r53368.

[Jon Honeycutt]

<rdar://problem/7549921>