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/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: XNotifyingDataObject.hxx,v $
 * $Revision: 1.6 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/


#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