sd a11y: Pass OAccessible for AccessibleDocumentViewBase parent

Pass the more concrete OAccessible instead of the abstract
XAccessible UNO interface for the parent param to the
AccessibleDocumentViewBase ctor.

Change-Id: I7bc782f2d6f9b2debd49230cd07eff5013a0be9b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/210379
Tested-by: Jenkins
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>

sd/source/ui/accessibility/AccessibleDocumentViewBase.cxx

@@ -58,19 +58,16 @@ using ::com::sun::star::uno::Reference;
 
 namespace accessibility {
 
-AccessibleDocumentViewBase::AccessibleDocumentViewBase (
-    ::sd::Window* pSdWindow,
-    ::sd::ViewShell* pViewShell,
+AccessibleDocumentViewBase::AccessibleDocumentViewBase(
+    ::sd::Window* pSdWindow, ::sd::ViewShell* pViewShell,
     uno::Reference<frame::XController> xController,
-    const uno::Reference<XAccessible>& rxParent)
-    : AccessibleContextBase (rxParent,
-                             pViewShell->GetDoc()->GetDocumentType() == DocumentType::Impress ?
-                                     AccessibleRole::DOCUMENT_PRESENTATION :
-                                     AccessibleRole::DOCUMENT),
-      mxController (std::move(xController)),
-      maViewForwarder (
-        static_cast<SdrPaintView*>(pViewShell->GetView()),
-        *pSdWindow->GetOutDev())
+    const rtl::Reference<comphelper::OAccessible>& rpParent)
+    : AccessibleContextBase(rpParent,
+                            pViewShell->GetDoc()->GetDocumentType() == DocumentType::Impress
+                                ? AccessibleRole::DOCUMENT_PRESENTATION
+                                : AccessibleRole::DOCUMENT)
+    , mxController(std::move(xController))
+    , maViewForwarder(static_cast<SdrPaintView*>(pViewShell->GetView()), *pSdWindow->GetOutDev())
 {
     if (mxController.is())
         mxModel = mxController->getModel();

sd/source/ui/inc/AccessibleDocumentViewBase.hxx

@@ -92,15 +92,13 @@ public:
         The view shell associated with the given window.
     @param rxController
         The controller from which to get the model.
-    @param rxParent
+    @param rpParent
         The accessible parent of the new object.  Note that this parent does
         not necessarily correspond with the parent of the given window.
      */
-    AccessibleDocumentViewBase (
-        ::sd::Window* pSdWindow,
-        ::sd::ViewShell* pViewShell,
-        css::uno::Reference<css::frame::XController> xController,
-        const css::uno::Reference<css::accessibility::XAccessible>& rxParent);
+    AccessibleDocumentViewBase(::sd::Window* pSdWindow, ::sd::ViewShell* pViewShell,
+                               css::uno::Reference<css::frame::XController> xController,
+                               const rtl::Reference<comphelper::OAccessible>& rpParent);
 
     virtual ~AccessibleDocumentViewBase() override;