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#ifndef _XNOTIFYINGDATAOBJECT_HXX_
#define _XNOTIFYINGDATAOBJECT_HXX_


//------------------------------------------------------------------------
// includes
//------------------------------------------------------------------------

#include <com/sun/star/datatransfer/XTransferable.hpp>
#include <com/sun/star/datatransfer/clipboard/XClipboardOwner.hpp>

#if defined _MSC_VER
#pragma warning(push,1)
#endif
#include <objidl.h>
#include <windows.h>
#if defined _MSC_VER
#pragma warning(pop)
#endif

#include <systools/win32/comtools.hxx>

/*--------------------------------------------------------------------------
    To implement the lostOwnership mechanism cleanly we need this wrapper
    object
----------------------------------------------------------------------------*/

// forward
class CWinClipbImpl;

class CXNotifyingDataObject : public IDataObject
{
public:
    CXNotifyingDataObject(
        const IDataObjectPtr& aIDataObject,
        const com::sun::star::uno::Reference< com::sun::star::datatransfer::XTransferable >& aXTransferable,
        const com::sun::star::uno::Reference< com::sun::star::datatransfer::clipboard::XClipboardOwner >& aXClipOwner,
        CWinClipbImpl* theWinClipImpl );

    virtual ~CXNotifyingDataObject() {}

    //-----------------------------------------------------------------
    // ole interface implementation
    //-----------------------------------------------------------------

    //IUnknown interface methods
    STDMETHODIMP           QueryInterface(REFIID iid, LPVOID* ppvObject);
    STDMETHODIMP_( ULONG ) AddRef( );
    STDMETHODIMP_( ULONG ) Release( );

    // IDataObject interface methods
    STDMETHODIMP GetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium );
    STDMETHODIMP GetDataHere( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium );
    STDMETHODIMP QueryGetData( LPFORMATETC pFormatetc );
    STDMETHODIMP GetCanonicalFormatEtc( LPFORMATETC pFormatectIn, LPFORMATETC pFormatetcOut );
    STDMETHODIMP SetData( LPFORMATETC pFormatetc, LPSTGMEDIUM pmedium, BOOL fRelease );
    STDMETHODIMP EnumFormatEtc( DWORD dwDirection, IEnumFORMATETC** ppenumFormatetc );
    STDMETHODIMP DAdvise( LPFORMATETC pFormatetc, DWORD advf, LPADVISESINK pAdvSink, DWORD* pdwConnection );
    STDMETHODIMP DUnadvise( DWORD dwConnection );
    STDMETHODIMP EnumDAdvise( LPENUMSTATDATA* ppenumAdvise );

    operator IDataObject*( );

private:
    void SAL_CALL lostOwnership( );

private:
    sal_Int32                                                                                           m_nRefCnt;
    IDataObjectPtr                                                                                      m_aIDataObject;
    const com::sun::star::uno::Reference< com::sun::star::datatransfer::XTransferable >                 m_XTransferable;
    const com::sun::star::uno::Reference< com::sun::star::datatransfer::clipboard::XClipboardOwner >    m_XClipboardOwner;
    CWinClipbImpl*                                                                                      m_pWinClipImpl;

    friend class CWinClipbImpl;
};

#endif