tdf#126877 crash on inserting floating frame

regression from
    commit 5043421fdc527d18d18121ec5fe2d4e009c8191a
    Date:   Fri Jul 19 14:05:10 2019 +0200
    loplugin:referencecasting in embeddedobj

OSpecialEmbeddedObject is playing games and effectively "unimplementing"
an interface it's superclass implements by doing custom stuff in
OSpecialEmbeddedObject::queryInterface.

So lets rather implement this in a more direct and obvious way.

Change-Id: I341b8e0b6acafac80cbd55f745811b73d2593585
Reviewed-on: https://gerrit.libreoffice.org/77580
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

1 files changed, 25 insertions, 6 deletions

diff --git a/embeddedobj/source/commonembedding/embedobj.cxx b/embeddedobj/source/commonembedding/embedobj.cxx
index a34020d354e1..3370c273dc6a 100644
--- a/embeddedobj/source/commonembedding/embedobj.cxx
+++ b/embeddedobj/source/commonembedding/embedobj.cxx
@@ -50,6 +50,7 @@
 #include <commonembobj.hxx>
 #include <intercept.hxx>
 #include "embedobj.hxx"
+#include <specialobject.hxx>
 
 using namespace ::com::sun::star;
 
@@ -174,13 +175,31 @@ void OCommonEmbeddedObject::SwitchStateTo_Impl( sal_Int32 nNextState )
             }
             else
             {
-                // in case embedded object is in loaded state the contents must
-                // be stored in the related storage and the storage
-                // must be created already
-                if ( !m_xObjectStorage.is() )
-                   throw io::IOException(); //TODO: access denied
+                if ( !dynamic_cast<OSpecialEmbeddedObject*>(this) )
+                {
+                    // in case embedded object is in loaded state the contents must
+                    // be stored in the related storage and the storage
+                    // must be created already
+                    if ( !m_xObjectStorage.is() )
+                        throw io::IOException(); //TODO: access denied
 
-                m_xDocHolder->SetComponent( LoadDocumentFromStorage_Impl(), m_bReadOnly );
+                    m_xDocHolder->SetComponent( LoadDocumentFromStorage_Impl(), m_bReadOnly );
+                }
+                else
+                {
+                    // objects without persistence will be initialized internally
+                    uno::Sequence < uno::Any > aArgs(1);
+                    aArgs[0] <<= uno::Reference < embed::XEmbeddedObject >( this );
+                    uno::Reference< util::XCloseable > xDocument(
+                            m_xContext->getServiceManager()->createInstanceWithArgumentsAndContext( GetDocumentServiceName(), aArgs, m_xContext),
+                            uno::UNO_QUERY );
+
+                    uno::Reference < container::XChild > xChild( xDocument, uno::UNO_QUERY );
+                    if ( xChild.is() )
+                        xChild->setParent( m_xParent );
+
+                    m_xDocHolder->SetComponent( xDocument, m_bReadOnly );
+                }
             }
 
             if ( !m_xDocHolder->GetComponent().is() )