fdo#64279 do not crash opening report for editing

There are two problems:

1) The classes derived from SdrObject cache their SvxShape, but do not
implement impl_setUnoShape().

2) There is a lifetime issue in association of a SdrObject and its
SvxShape. SvxDrawPage::CreateSdrObject not only creates a new SdrObject
for a shape, but also inserts it into the page. At this point, the shape
has not been attached to the object yet. That means that the object
creates another shape at one point during the InsertObject call,
which is then destroyed again. But reportdesign shapes own their
objects, which means that destuction of the shape causes destruction
of the object too...

My first idea was to disable the insertion in
SvxDrawPage::CreateSdrObject, but it has been there since the dawn of
time, so I did not gather the courage to do that. Instead, I put in a
hack to allow to skip the insertion.

Change-Id: I888a54067be1934578434d8b476a13a7ff8d02b3

1 files changed, 6 insertions, 0 deletions

diff --git a/reportdesign/inc/RptObject.hxx b/reportdesign/inc/RptObject.hxx
index ac22e47d4f45..9de4b13fb163 100644
--- a/reportdesign/inc/RptObject.hxx
+++ b/reportdesign/inc/RptObject.hxx
@@ -169,6 +169,9 @@ public:
     virtual ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface > getUnoShape();
     virtual sal_uInt16 GetObjIdentifier() const;
     virtual sal_uInt32 GetObjInventor() const;
+
+private:
+    virtual void impl_setUnoShape( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& rxUnoShape );
 };
 
 //============================================================================
@@ -182,6 +185,8 @@ class REPORTDESIGN_DLLPUBLIC OOle2Obj: public SdrOle2Obj , public OObjectBase
     sal_uInt16 m_nType;
     bool    m_bOnlyOnce;
     void impl_createDataProvider_nothrow( const ::com::sun::star::uno::Reference< ::com::sun::star::frame::XModel>& _xModel);
+    virtual void impl_setUnoShape( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& rxUnoShape );
+
 public:
     static OOle2Obj* Create( const ::com::sun::star::uno::Reference< ::com::sun::star::report::XReportComponent>& _xComponent,sal_uInt16 _nType )
     {
@@ -271,6 +276,7 @@ public:
     OUnoObject& operator=(const OUnoObject& rObj);
 
 private:
+    virtual void impl_setUnoShape( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& rxUnoShape );
     void    impl_setReportComponent_nothrow();
     void    impl_initializeModel_nothrow();
 };