i121917 secure SdrTextObj casts in cui

cui/source/tabpages/swpossizetabpage.cxx

@@ -1932,7 +1932,9 @@ void SvxSwPosSizeTabPage::SetView( const SdrView* pSdrView )
         SdrObjKind eKind = (SdrObjKind) pObj->GetObjIdentifier();
         if( ( pObj->GetObjInventor() == SdrInventor ) &&
             ( eKind==OBJ_TEXT || eKind==OBJ_TITLETEXT || eKind==OBJ_OUTLINETEXT) &&
-            ( (SdrTextObj*) pObj )->HasText() )
+            // #121917# The original ((SdrTextObj*)pObj)->HasText() will fail badly with SdrVirtObjs from Writer
+            0 != dynamic_cast< const SdrTextObj* >(pObj) &&
+            static_cast< const SdrTextObj* >(pObj)->HasText() )
         {
             DBG_ERROR("AutoWidth/AutoHeight should be enabled");
         }

cui/source/tabpages/textattr.cxx

@@ -547,7 +547,9 @@ void SvxTextAttrPage::Construct()
                 case OBJ_OUTLINETEXT :
                 case OBJ_CAPTION :
                 {
-                    if ( ((SdrTextObj*)pObj)->HasText() )
+                    if( // #121917# The original ((SdrTextObj*)pObj)->HasText() will fail badly with SdrVirtObjs from Writer
+                        0 != dynamic_cast< const SdrTextObj* >(pObj) &&
+                        static_cast< const SdrTextObj* >(pObj)->HasText() )
                     {
                         // Konturfluss ist NICHT bei reinen Textobjekten m�glich
                         bContourEnabled = sal_False;

cui/source/tabpages/transfrm.cxx

@@ -840,7 +840,11 @@ void SvxPositionSizeTabPage::Construct()
         const SdrObject* pObj = rMarkList.GetMark(0)->GetMarkedSdrObj();
         const SdrObjKind eKind((SdrObjKind)pObj->GetObjIdentifier());
 
-        if((pObj->GetObjInventor() == SdrInventor) && (OBJ_TEXT == eKind || OBJ_TITLETEXT == eKind || OBJ_OUTLINETEXT == eKind) && ((SdrTextObj*)pObj)->HasText())
+        if((pObj->GetObjInventor() == SdrInventor) &&
+            (OBJ_TEXT == eKind || OBJ_TITLETEXT == eKind || OBJ_OUTLINETEXT == eKind) &&
+            // #121917# The original ((SdrTextObj*)pObj)->HasText() will fail badly with SdrVirtObjs from Writer
+            0 != dynamic_cast< const SdrTextObj* >(pObj) &&
+            static_cast< const SdrTextObj* >(pObj)->HasText())
         {
             mbAdjustDisabled = false;
             maFlAdjust.Enable();