libreoffice/embeddedobj/source/msole/olecomponent.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
 * This file is part of the LibreOffice project.
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * This file incorporates work covered by the following license notice:
 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
 *   contributor license agreements. See the NOTICE file distributed
 *   with this work for additional information regarding copyright
 *   ownership. The ASF licenses this file to you under the Apache
 *   License, Version 2.0 (the "License"); you may not use this file
 *   except in compliance with the License. You may obtain a copy of
 *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
 */

#include <com/sun/star/lang/IllegalArgumentException.hpp>
#include <com/sun/star/lang/DisposedException.hpp>
#include <com/sun/star/embed/WrongStateException.hpp>
#include <com/sun/star/embed/UnreachableStateException.hpp>
#include <com/sun/star/ucb/XSimpleFileAccess.hpp>
#include <com/sun/star/beans/XPropertySet.hpp>
#include <com/sun/star/io/TempFile.hpp>
#include <com/sun/star/io/XTruncate.hpp>
#include <com/sun/star/awt/XRequestCallback.hpp>

#include <platform.h>
#include <cppuhelper/interfacecontainer.h>
#include <comphelper/mimeconfighelper.hxx>
#include <comphelper/processfactory.hxx>
#include <comphelper/storagehelper.hxx>
#include <osl/file.hxx>
#include <rtl/ref.hxx>

#include <olecomponent.hxx>
#include <olewrapclient.hxx>
#include <advisesink.hxx>
#include <oleembobj.hxx>
#include <mtnotification.hxx>
#include <boost/scoped_array.hpp>

using namespace ::com::sun::star;
using namespace ::comphelper;
#define     MAX_ENUM_ELE     20
#define     FORMATS_NUM      3

// ============ class ComSmart =====================
namespace {

template< class T > class ComSmart
{
    T* m_pInterface;

    void OwnRelease()
    {
        if ( m_pInterface )
        {
            T* pInterface = m_pInterface;
            m_pInterface = NULL;
            pInterface->Release();
        }
    }

public:
    ComSmart()
    : m_pInterface( NULL )
    {}

    ComSmart( const ComSmart<T>& rObj )
    : m_pInterface( rObj.m_pInterface )
    {
        if ( m_pInterface != NULL )
            m_pInterface->AddRef();
    }

    ComSmart( T* pInterface )
    : m_pInterface( pInterface )
    {
         if ( m_pInterface != NULL )
            m_pInterface->AddRef();
    }

    ~ComSmart()
    {
        OwnRelease();
    }

    ComSmart& operator=( const ComSmart<T>& rObj )
    {
        OwnRelease();

        m_pInterface = rObj.m_pInterface;

        if ( m_pInterface != NULL )
            m_pInterface->AddRef();

        return *this;
    }

    ComSmart<T>& operator=( T* pInterface )
    {
        OwnRelease();

        m_pInterface = pInterface;

        if ( m_pInterface != NULL )
            m_pInterface->AddRef();

        return *this;
    }

    operator T*() const
    {
        return m_pInterface;
    }

    T& operator*() const
    {
        return *m_pInterface;
    }

    T** operator&()
    {
        OwnRelease();

        m_pInterface = NULL;

        return &m_pInterface;
    }

    T* operator->() const
    {
        return m_pInterface;
    }

    BOOL operator==( const ComSmart<T>& rObj ) const
    {
        return ( m_pInterface == rObj.m_pInterface );
    }

    BOOL operator!=( const ComSmart<T>& rObj ) const
    {
        return ( m_pInterface != rObj.m_pInterface );
    }

    BOOL operator==( const T* pInterface ) const
    {
        return ( m_pInterface == pInterface );
    }

    BOOL operator!=( const T* pInterface ) const
    {
        return ( m_pInterface != pInterface );
    }
};

}

// ============ class ComSmart =====================

sal_Bool ConvertBufferToFormat( void* pBuf,
                                sal_uInt32 nBufSize,
                                const OUString& aFormatShortName,
                                uno::Any& aResult );

OUString GetNewTempFileURL_Impl( const uno::Reference< lang::XMultiServiceFactory >& xFactory ) throw( io::IOException );

typedef ::std::vector< FORMATETC* > FormatEtcList;

FORMATETC pFormatTemplates[FORMATS_NUM] = {
                    { CF_ENHMETAFILE, NULL, 0, -1, TYMED_ENHMF },
                    { CF_METAFILEPICT, NULL, 0, -1, TYMED_MFPICT },
                    { CF_BITMAP, NULL, 0, -1, TYMED_GDI } };


struct OleComponentNative_Impl {
    ComSmart< IUnknown > m_pObj;
    ComSmart< IOleObject > m_pOleObject;
    ComSmart< IViewObject2 > m_pViewObject2;
    ComSmart< IStorage > m_pIStorage;
    FormatEtcList m_aFormatsList;
    uno::Sequence< datatransfer::DataFlavor > m_aSupportedGraphFormats;

    OleComponentNative_Impl()
    {
        // TODO: Extend format list
        m_aSupportedGraphFormats.realloc( 5 );

        m_aSupportedGraphFormats[0] = datatransfer::DataFlavor(
            OUString( "application/x-openoffice-emf;windows_formatname=\"Image EMF\"" ),
            OUString( "Windows Enhanced Metafile" ),
            getCppuType( (const uno::Sequence< sal_Int8 >*) 0 ) );

        m_aSupportedGraphFormats[1] = datatransfer::DataFlavor(
            OUString( "application/x-openoffice-wmf;windows_formatname=\"Image WMF\"" ),
            OUString( "Windows Metafile" ),
            getCppuType( (const uno::Sequence< sal_Int8 >*) 0 ) );

        m_aSupportedGraphFormats[2] = datatransfer::DataFlavor(
            OUString( "application/x-openoffice-bitmap;windows_formatname=\"Bitmap\"" ),
            OUString( "Bitmap" ),
            getCppuType( (const uno::Sequence< sal_Int8 >*) 0 ) );

        m_aSupportedGraphFormats[3] = datatransfer::DataFlavor(
            OUString( "image/png" ),
            OUString( "PNG" ),
            getCppuType( (const uno::Sequence< sal_Int8 >*) 0 ) );

        m_aSupportedGraphFormats[0] = datatransfer::DataFlavor(
            OUString( "application/x-openoffice-gdimetafile;windows_formatname=\"GDIMetaFile\"" ),
            OUString( "GDIMetafile" ),
            getCppuType( (const uno::Sequence< sal_Int8 >*) 0 ) );
    }

    void AddSupportedFormat( const FORMATETC& aFormatEtc );

    FORMATETC* GetSupportedFormatForAspect( sal_uInt32 nRequestedAspect );

    sal_Bool ConvertDataForFlavor( const STGMEDIUM& aMedium,
                                    const datatransfer::DataFlavor& aFlavor,
                                    uno::Any& aResult );

    sal_Bool GraphicalFlavor( const datatransfer::DataFlavor& aFlavor );

    uno::Sequence< datatransfer::DataFlavor > GetFlavorsForAspects( sal_uInt32 nSupportedAspects );
};


DWORD GetAspectFromFlavor( const datatransfer::DataFlavor& aFlavor )
{
    if ( aFlavor.MimeType.indexOf( ";Aspect=THUMBNAIL" ) != -1 )
        return DVASPECT_THUMBNAIL;
    else if ( aFlavor.MimeType.indexOf( ";Aspect=ICON" ) != -1 )
        return DVASPECT_ICON;
    else if ( aFlavor.MimeType.indexOf( ";Aspect=DOCPRINT" ) != -1 )
        return DVASPECT_DOCPRINT;
    else
        return DVASPECT_CONTENT;
}


OUString GetFlavorSuffixFromAspect( DWORD nAsp )
{
    OUString aResult;

    if ( nAsp == DVASPECT_THUMBNAIL )
        aResult = ";Aspect=THUMBNAIL";
    else if ( nAsp == DVASPECT_ICON )
        aResult = ";Aspect=ICON";
    else if ( nAsp == DVASPECT_DOCPRINT )
        aResult = ";Aspect=DOCPRINT";

    // no suffix for DVASPECT_CONTENT

    return aResult;
}


HRESULT OpenIStorageFromURL_Impl( const OUString& aURL, IStorage** ppIStorage )
{
    OSL_ENSURE( ppIStorage, "The pointer must not be empty!" );

    OUString aFilePath;
    if ( !ppIStorage || ::osl::FileBase::getSystemPathFromFileURL( aURL, aFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happened

    return StgOpenStorage( reinterpret_cast<LPCWSTR>(aFilePath.getStr()),
                             NULL,
                             STGM_READWRITE | STGM_TRANSACTED, // | STGM_DELETEONRELEASE,
                             NULL,
                             0,
                             ppIStorage );
}


sal_Bool OleComponentNative_Impl::ConvertDataForFlavor( const STGMEDIUM& aMedium,
                                                        const datatransfer::DataFlavor& aFlavor,
                                                        uno::Any& aResult )
{
    sal_Bool bAnyIsReady = sal_False;

    // try to convert data from Medium format to specified Flavor format
    if ( aFlavor.DataType == getCppuType( ( const uno::Sequence< sal_Int8 >* ) 0 ) )
    {
        // first the GDI-metafile must be generated

        boost::scoped_array<unsigned char> pBuf;
        sal_uInt32 nBufSize = 0;
        OUString aFormat;

        if ( aMedium.tymed == TYMED_MFPICT ) // Win Metafile
        {
            aFormat = "image/x-wmf";
            METAFILEPICT* pMF = ( METAFILEPICT* )GlobalLock( aMedium.hMetaFilePict );
            if ( pMF )
            {
                nBufSize = GetMetaFileBitsEx( pMF->hMF, 0, NULL ) + 22;
                pBuf.reset(new unsigned char[nBufSize]);


                // TODO/LATER: the unit size must be calculated correctly
                *( (long* )pBuf.get() ) = 0x9ac6cdd7L;
                *( (short* )( pBuf.get()+6 )) = ( SHORT ) 0;
                *( (short* )( pBuf.get()+8 )) = ( SHORT ) 0;
                *( (short* )( pBuf.get()+10 )) = ( SHORT ) pMF->xExt;
                *( (short* )( pBuf.get()+12 )) = ( SHORT ) pMF->yExt;
                *( (short* )( pBuf.get()+14 )) = ( USHORT ) 2540;


                if ( nBufSize && nBufSize == GetMetaFileBitsEx( pMF->hMF, nBufSize - 22, pBuf.get() + 22 ) )
                {
                    if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice-wmf;windows_formatname=\"Image WMF\"", 57 ) )
                    {
                        aResult <<= uno::Sequence< sal_Int8 >( ( sal_Int8* )pBuf.get(), nBufSize );
                        bAnyIsReady = sal_True;
                    }
                }

                GlobalUnlock( aMedium.hMetaFilePict );
            }
        }
        else if ( aMedium.tymed == TYMED_ENHMF ) // Enh Metafile
        {
            aFormat = "image/x-emf";
            nBufSize = GetEnhMetaFileBits( aMedium.hEnhMetaFile, 0, NULL );
            pBuf.reset(new unsigned char[nBufSize]);
            if ( nBufSize && nBufSize == GetEnhMetaFileBits( aMedium.hEnhMetaFile, nBufSize, pBuf.get() ) )
            {
                if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice-emf;windows_formatname=\"Image EMF\"", 57 ) )
                {
                    aResult <<= uno::Sequence< sal_Int8 >( ( sal_Int8* )pBuf.get(), nBufSize );
                    bAnyIsReady = sal_True;
                }
            }
        }
        else if ( aMedium.tymed == TYMED_GDI ) // Bitmap
        {
            aFormat = "image/x-MS-bmp";
            nBufSize = GetBitmapBits( aMedium.hBitmap, 0, NULL );
            pBuf.reset(new unsigned char[nBufSize]);
            if ( nBufSize && nBufSize == sal::static_int_cast< ULONG >( GetBitmapBits( aMedium.hBitmap, nBufSize, pBuf.get() ) ) )
            {
                if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice-bitmap;windows_formatname=\"Bitmap\"", 54 ) )
                {
                    aResult <<= uno::Sequence< sal_Int8 >( ( sal_Int8* )pBuf.get(), nBufSize );
                    bAnyIsReady = sal_True;
                }
            }
        }

        if ( pBuf && !bAnyIsReady )
        {
            for ( sal_Int32 nInd = 0; nInd < m_aSupportedGraphFormats.getLength(); nInd++ )
                 if ( aFlavor.MimeType.match( m_aSupportedGraphFormats[nInd].MimeType )
                  && aFlavor.DataType == m_aSupportedGraphFormats[nInd].DataType
                  && aFlavor.DataType == getCppuType( (const uno::Sequence< sal_Int8 >*) 0 ) )
            {
                bAnyIsReady = ConvertBufferToFormat( ( void* )pBuf.get(), nBufSize, aFormat, aResult );
                break;
            }
        }
    }

    return bAnyIsReady;
}


sal_Bool OleComponentNative_Impl::GraphicalFlavor( const datatransfer::DataFlavor& aFlavor )
{
    // Actually all the required graphical formats must be supported
    for ( sal_Int32 nInd = 0; nInd < m_aSupportedGraphFormats.getLength(); nInd++ )
         if ( aFlavor.MimeType.match( m_aSupportedGraphFormats[nInd].MimeType )
          && aFlavor.DataType == m_aSupportedGraphFormats[nInd].DataType )
            return sal_True;

    return sal_False;
}


sal_Bool GetClassIDFromSequence_Impl( uno::Sequence< sal_Int8 > aSeq, CLSID& aResult )
{
    if ( aSeq.getLength() == 16 )
    {
        aResult.Data1 = ( ( ( ( ( ( sal_uInt8 )aSeq[0] << 8 ) + ( sal_uInt8 )aSeq[1] ) << 8 ) + ( sal_uInt8 )aSeq[2] ) << 8 ) + ( sal_uInt8 )aSeq[3];
        aResult.Data2 = ( ( sal_uInt8 )aSeq[4] << 8 ) + ( sal_uInt8 )aSeq[5];
        aResult.Data3 = ( ( sal_uInt8 )aSeq[6] << 8 ) + ( sal_uInt8 )aSeq[7];
        for( int nInd = 0; nInd < 8; nInd++ )
            aResult.Data4[nInd] = ( sal_uInt8 )aSeq[nInd+8];

        return sal_True;
    }

    return sal_False;
}


OUString WinAccToVcl_Impl( const sal_Unicode* pStr )
{
    OUString aResult;

    if( pStr )
    {
        while ( *pStr )
        {
            if ( *pStr == '&' )
            {
                aResult += "~";
                while( *( ++pStr ) == '&' );
            }
            else
            {
                aResult += OUString( pStr, 1 );
                pStr++;
            }
        }
    }

    return aResult;
}


OleComponent::OleComponent( const uno::Reference< lang::XMultiServiceFactory >& xFactory, OleEmbeddedObject* pUnoOleObject )
: m_pInterfaceContainer( NULL )
, m_bDisposed( sal_False )
, m_bModified( sal_False )
, m_pNativeImpl( new OleComponentNative_Impl() )
, m_pUnoOleObject( pUnoOleObject )
, m_pOleWrapClientSite( NULL )
, m_pImplAdviseSink( NULL )
, m_nOLEMiscFlags( 0 )
, m_nAdvConn( 0 )
, m_xFactory( xFactory )
, m_bOleInitialized( sal_False )
, m_bWorkaroundActive( sal_False )
{
    OSL_ENSURE( m_pUnoOleObject, "No owner object is provided!" );

    HRESULT hr = OleInitialize( NULL );
    OSL_ENSURE( hr == S_OK || hr == S_FALSE, "The ole can not be successfully initialized\n" );
    if ( hr == S_OK || hr == S_FALSE )
        m_bOleInitialized = sal_True;

    m_pOleWrapClientSite = new OleWrapperClientSite( ( OleComponent* )this );
    m_pOleWrapClientSite->AddRef();

    m_pImplAdviseSink = new OleWrapperAdviseSink( ( OleComponent* )this );
    m_pImplAdviseSink->AddRef();

}


OleComponent::~OleComponent()
{
    OSL_ENSURE( !m_pOleWrapClientSite && !m_pImplAdviseSink && !m_pInterfaceContainer && !m_bOleInitialized,
                "The object was not closed successfully! DISASTER is possible!" );

    if ( m_pOleWrapClientSite || m_pImplAdviseSink || m_pInterfaceContainer || m_bOleInitialized )
    {
        ::osl::MutexGuard aGuard( m_aMutex );
        m_refCount++;
        try {
            Dispose();
        } catch( const uno::Exception& ) {}
    }

    for ( FormatEtcList::iterator aIter = m_pNativeImpl->m_aFormatsList.begin();
          aIter != m_pNativeImpl->m_aFormatsList.end();
          ++aIter )
    {
        delete (*aIter);
        (*aIter) = NULL;
    }
    m_pNativeImpl->m_aFormatsList.clear();

    delete m_pNativeImpl;
}


void OleComponentNative_Impl::AddSupportedFormat( const FORMATETC& aFormatEtc )
{
    FORMATETC* pFormatToInsert = new FORMATETC( aFormatEtc );
    m_aFormatsList.push_back( pFormatToInsert );
}


FORMATETC* OleComponentNative_Impl::GetSupportedFormatForAspect( sal_uInt32 nRequestedAspect )
{
    for ( FormatEtcList::iterator aIter = m_aFormatsList.begin();
          aIter != m_aFormatsList.end();
          ++aIter )
        if ( (*aIter) && (*aIter)->dwAspect == nRequestedAspect )
            return (*aIter);

    return NULL;
}


void OleComponent::Dispose()
{
    // the mutex must be locked before this method is called
    if ( m_bDisposed )
        return;

    CloseObject();

    if ( m_pOleWrapClientSite )
    {
        m_pOleWrapClientSite->disconnectOleComponent();
        m_pOleWrapClientSite->Release();
        m_pOleWrapClientSite = NULL;
    }

    if ( m_pImplAdviseSink )
    {
        m_pImplAdviseSink->disconnectOleComponent();
        m_pImplAdviseSink->Release();
        m_pImplAdviseSink = NULL;
    }

    if ( m_pInterfaceContainer )
    {
        lang::EventObject aEvent( static_cast< ::cppu::OWeakObject* >( this ) );
        m_pInterfaceContainer->disposeAndClear( aEvent );

        delete m_pInterfaceContainer;
        m_pInterfaceContainer = NULL;
    }

    if ( m_bOleInitialized )
    {
        // since the disposing can happen not only from main thread but also from a clipboard
        // the deinitialization might lead to a disaster, SO7 does not deinitialize OLE at all
        // so currently the same approach is selected as workaround
        // OleUninitialize();
        m_bOleInitialized = sal_False;
    }

    m_bDisposed = sal_True;
}


void OleComponent::disconnectEmbeddedObject()
{
    // must not be called from destructor of UNO OLE object!!!
    osl::MutexGuard aGuard( m_aMutex );
    m_pUnoOleObject = NULL;
}


void OleComponent::CreateNewIStorage_Impl()
{
    // TODO: in future a global memory could be used instead of file.

    // write the stream to the temporary file
    OUString aTempURL;

    OSL_ENSURE( m_pUnoOleObject, "Unexpected object absence!" );
    if ( m_pUnoOleObject )
        aTempURL = m_pUnoOleObject->CreateTempURLEmpty_Impl();
    else
        aTempURL = GetNewTempFileURL_Impl( m_xFactory );

    if ( !aTempURL.getLength() )
        throw uno::RuntimeException(); // TODO

    // open an IStorage based on the temporary file
    OUString aTempFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( aTempURL, aTempFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happened

    HRESULT hr = StgCreateDocfile( reinterpret_cast<LPCWSTR>(aTempFilePath.getStr()), STGM_CREATE | STGM_READWRITE | STGM_TRANSACTED | STGM_DELETEONRELEASE, 0, &m_pNativeImpl->m_pIStorage );
    if ( FAILED( hr ) || !m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO: transport error code?
}


uno::Sequence< datatransfer::DataFlavor > OleComponentNative_Impl::GetFlavorsForAspects( sal_uInt32 nSupportedAspects )
{
    uno::Sequence< datatransfer::DataFlavor > aResult;
    for ( sal_uInt32 nAsp = 1; nAsp <= 8; nAsp *= 2 )
        if ( ( nSupportedAspects & nAsp ) == nAsp )
        {
            OUString aAspectSuffix = GetFlavorSuffixFromAspect( nAsp );

            sal_Int32 nLength = aResult.getLength();
            aResult.realloc( nLength + m_aSupportedGraphFormats.getLength() );

            for ( sal_Int32 nInd = 0; nInd < m_aSupportedGraphFormats.getLength(); nInd++ )
            {
                aResult[nLength + nInd].MimeType = m_aSupportedGraphFormats[nInd].MimeType + aAspectSuffix;
                aResult[nLength + nInd].HumanPresentableName = m_aSupportedGraphFormats[nInd].HumanPresentableName;
                aResult[nLength + nInd].DataType = m_aSupportedGraphFormats[nInd].DataType;
            }
        }

    return aResult;
}


void OleComponent::RetrieveObjectDataFlavors_Impl()
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( !m_aDataFlavors.getLength() )
    {
        ComSmart< IDataObject > pDataObject;
        HRESULT hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
        if ( SUCCEEDED( hr ) && pDataObject )
        {
            ComSmart< IEnumFORMATETC > pFormatEnum;
            hr = pDataObject->EnumFormatEtc( DATADIR_GET, &pFormatEnum );
            if ( SUCCEEDED( hr ) && pFormatEnum )
            {
                FORMATETC pElem[ MAX_ENUM_ELE ];
                ULONG nNum = 0;

                // if it is possible to retrieve at least one supported graphical format for an aspect
                // this format can be converted to other supported formats
                sal_uInt32 nSupportedAspects = 0;
                do
                {
                    HRESULT hr2 = pFormatEnum->Next( MAX_ENUM_ELE, pElem, &nNum );
                    if( hr2 == S_OK || hr2 == S_FALSE )
                    {
                        for( sal_uInt32 nInd = 0; nInd < FORMATS_NUM; nInd++ )
                            {
                            if ( pElem[nInd].cfFormat == pFormatTemplates[nInd].cfFormat
                              && pElem[nInd].tymed == pFormatTemplates[nInd].tymed )
                                nSupportedAspects |= pElem[nInd].dwAspect;
                        }
                    }
                    else
                        break;
                }
                while( nNum == MAX_ENUM_ELE );

                m_aDataFlavors = m_pNativeImpl->GetFlavorsForAspects( nSupportedAspects );
            }
        }

        if ( !m_aDataFlavors.getLength() )
        {
            // TODO:
            // for any reason the object could not provide this information
            // try to get access to the cached representation
        }
    }
}


sal_Bool OleComponent::InitializeObject_Impl()
// There will be no static objects!
{
    if ( !m_pNativeImpl->m_pObj )
        return sal_False;

    // the linked object will be detected here
    ComSmart< IOleLink > pOleLink;
    HRESULT hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IOleLink, (void**)&pOleLink );
    OSL_ENSURE( m_pUnoOleObject, "Unexpected object absence!" );
    if ( m_pUnoOleObject )
        m_pUnoOleObject->SetObjectIsLink_Impl( sal_Bool( pOleLink != NULL ) );


    hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IViewObject2, (void**)&m_pNativeImpl->m_pViewObject2 );
    if ( FAILED( hr ) || !m_pNativeImpl->m_pViewObject2 )
        return sal_False;

    // remove all the caches
    IOleCache* pIOleCache = NULL;
    if ( SUCCEEDED( m_pNativeImpl->m_pObj->QueryInterface( IID_IOleCache, (void**)&pIOleCache ) ) && pIOleCache )
    {
        IEnumSTATDATA* pEnumSD = NULL;
        HRESULT hr2 = pIOleCache->EnumCache( &pEnumSD );

        if ( SUCCEEDED( hr2 ) && pEnumSD )
        {
            pEnumSD->Reset();
            STATDATA aSD;
            DWORD nNum;
            while( SUCCEEDED( pEnumSD->Next( 1, &aSD, &nNum ) ) && nNum == 1 )
                hr2 = pIOleCache->Uncache( aSD.dwConnection );
        }

        // No IDataObject implementation, caching must be used instead
        DWORD nConn;
        FORMATETC aFormat = { 0, 0, DVASPECT_CONTENT, -1, TYMED_MFPICT };
        hr2 = pIOleCache->Cache( &aFormat, ADVFCACHE_ONSAVE, &nConn );

        pIOleCache->Release();
        pIOleCache = NULL;
    }

    hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IOleObject, (void**)&m_pNativeImpl->m_pOleObject );
    if ( FAILED( hr ) || !m_pNativeImpl->m_pOleObject )
        return sal_False; // Static objects are not supported, they should be inserted as graphics

    m_pNativeImpl->m_pOleObject->GetMiscStatus( DVASPECT_CONTENT, ( DWORD* )&m_nOLEMiscFlags );
    // TODO: use other misc flags also
    // the object should have drawable aspect even in case it supports only iconic representation
    // if ( m_nOLEMiscFlags & OLEMISC_ONLYICONIC )

    m_pNativeImpl->m_pOleObject->SetClientSite( m_pOleWrapClientSite );

    // the only need in this registration is workaround for close notification
    m_pNativeImpl->m_pOleObject->Advise( m_pImplAdviseSink, ( DWORD* )&m_nAdvConn );
    m_pNativeImpl->m_pViewObject2->SetAdvise( DVASPECT_CONTENT, 0, m_pImplAdviseSink );

    OleSetContainedObject( m_pNativeImpl->m_pOleObject, TRUE );

    return sal_True;
}


void OleComponent::LoadEmbeddedObject( const OUString& aTempURL )
{
    if ( !aTempURL.getLength() )
        throw lang::IllegalArgumentException(); // TODO

    if ( m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO the object is already initialized or wrong initialization is done

    // open an IStorage based on the temporary file
    HRESULT hr = OpenIStorageFromURL_Impl( aTempURL, &m_pNativeImpl->m_pIStorage );

    if ( FAILED( hr ) || !m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO: transport error code?

    hr = OleLoad( m_pNativeImpl->m_pIStorage, IID_IUnknown, NULL, (void**)&m_pNativeImpl->m_pObj );
    if ( FAILED( hr ) || !m_pNativeImpl->m_pObj )
    {
        throw uno::RuntimeException();
    }

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}


void OleComponent::CreateObjectFromClipboard()
{
    if ( m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO:the object is already initialized

    CreateNewIStorage_Impl();
    if ( !m_pNativeImpl->m_pIStorage )
        throw uno::RuntimeException(); // TODO

    IDataObject * pDO = NULL;
    HRESULT hr = OleGetClipboard( &pDO );
    if( SUCCEEDED( hr ) && pDO )
    {
        hr = OleQueryCreateFromData( pDO );
        if( S_OK == GetScode( hr ) )
        {
            hr = OleCreateFromData( pDO,
                                    IID_IUnknown,
                                    OLERENDER_DRAW, // OLERENDER_FORMAT
                                    NULL,           // &aFormat,
                                    NULL,
                                    m_pNativeImpl->m_pIStorage,
                                    (void**)&m_pNativeImpl->m_pObj );
        }
        else
        {
            // Static objects are not supported
            pDO->Release();
        }
    }

    if ( FAILED( hr ) || !m_pNativeImpl->m_pObj )
        throw uno::RuntimeException();

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}


void OleComponent::CreateNewEmbeddedObject( const uno::Sequence< sal_Int8 >& aSeqCLSID )
{
    CLSID aClsID;

    if ( !GetClassIDFromSequence_Impl( aSeqCLSID, aClsID ) )
        throw lang::IllegalArgumentException(); // TODO

    if ( m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO:the object is already initialized

    CreateNewIStorage_Impl();
    if ( !m_pNativeImpl->m_pIStorage )
        throw uno::RuntimeException(); // TODO

    // FORMATETC aFormat = { CF_METAFILEPICT, NULL, nAspect, -1, TYMED_MFPICT }; // for OLE..._DRAW should be NULL

    HRESULT hr = OleCreate( aClsID,
                            IID_IUnknown,
                            OLERENDER_DRAW, // OLERENDER_FORMAT
                            NULL,           // &aFormat,
                            NULL,
                            m_pNativeImpl->m_pIStorage,
                            (void**)&m_pNativeImpl->m_pObj );

    if ( FAILED( hr ) || !m_pNativeImpl->m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO

    // TODO: getExtent???
}


void OleComponent::CreateObjectFromData( const uno::Reference< datatransfer::XTransferable >& )
// Static objects are not supported, they should be inserted as graphics
{
    // TODO: May be this call is useless since there are no static objects
    //       and nonstatic objects will be created based on OLEstorage ( stream ).
    //       ???

    // OleQueryCreateFromData...
}


void OleComponent::CreateObjectFromFile( const OUString& aFileURL )
{
    if ( m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO:the object is already initialized

    CreateNewIStorage_Impl();
    if ( !m_pNativeImpl->m_pIStorage )
        throw uno::RuntimeException(); // TODO:

    OUString aFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( aFileURL, aFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happened

    HRESULT hr = OleCreateFromFile( CLSID_NULL,
                                    reinterpret_cast<LPCWSTR>(aFilePath.getStr()),
                                    IID_IUnknown,
                                    OLERENDER_DRAW, // OLERENDER_FORMAT
                                    NULL,
                                    NULL,
                                    m_pNativeImpl->m_pIStorage,
                                    (void**)&m_pNativeImpl->m_pObj );

    if ( FAILED( hr ) || !m_pNativeImpl->m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}


void OleComponent::CreateLinkFromFile( const OUString& aFileURL )
{
    if ( m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO:the object is already initialized

    CreateNewIStorage_Impl();
    if ( !m_pNativeImpl->m_pIStorage )
        throw uno::RuntimeException(); // TODO:

    OUString aFilePath;
    if ( ::osl::FileBase::getSystemPathFromFileURL( aFileURL, aFilePath ) != ::osl::FileBase::E_None )
        throw uno::RuntimeException(); // TODO: something dangerous happened

    HRESULT hr = OleCreateLinkToFile( reinterpret_cast<LPCWSTR>(aFilePath.getStr()),
                                        IID_IUnknown,
                                        OLERENDER_DRAW, // OLERENDER_FORMAT
                                        NULL,
                                        NULL,
                                        m_pNativeImpl->m_pIStorage,
                                        (void**)&m_pNativeImpl->m_pObj );

    if ( FAILED( hr ) || !m_pNativeImpl->m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}


void OleComponent::InitEmbeddedCopyOfLink( OleComponent* pOleLinkComponent )
{
    if ( !pOleLinkComponent || !pOleLinkComponent->m_pNativeImpl->m_pObj )
        throw lang::IllegalArgumentException(); // TODO

    if ( m_pNativeImpl->m_pIStorage )
        throw io::IOException(); // TODO:the object is already initialized

    ComSmart< IDataObject > pDataObject;
    HRESULT hr = pOleLinkComponent->m_pNativeImpl->m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
    if ( SUCCEEDED( hr ) && pDataObject && SUCCEEDED( OleQueryCreateFromData( pDataObject ) ) )
    {
        // the object must be already disconnected from the temporary URL
        CreateNewIStorage_Impl();
        if ( !m_pNativeImpl->m_pIStorage )
            throw uno::RuntimeException(); // TODO:

        hr = OleCreateFromData( pDataObject,
                                IID_IUnknown,
                                OLERENDER_DRAW,
                                NULL,
                                NULL,
                                m_pNativeImpl->m_pIStorage,
                                (void**)&m_pNativeImpl->m_pObj );
    }

    if ( !m_pNativeImpl->m_pObj )
    {
        ComSmart< IOleLink > pOleLink;
        hr = pOleLinkComponent->m_pNativeImpl->m_pObj->QueryInterface( IID_IOleLink, (void**)&pOleLink );
        if ( FAILED( hr ) || !pOleLink )
            throw io::IOException(); // TODO: the object doesn't support IOleLink

        ComSmart< IMoniker > pMoniker;
        hr = pOleLink->GetSourceMoniker( &pMoniker );
        if ( FAILED( hr ) || !pMoniker )
            throw io::IOException(); // TODO: can not retrieve moniker

        // In case of file moniker life is easy : )
        DWORD aMonType = 0;
        hr = pMoniker->IsSystemMoniker( &aMonType );
        if ( SUCCEEDED( hr ) && aMonType == MKSYS_FILEMONIKER )
        {
            ComSmart< IMalloc > pMalloc;
            CoGetMalloc( 1, &pMalloc ); // if fails there will be a memory leak
            OSL_ENSURE( pMalloc, "CoGetMalloc() failed!" );

            LPOLESTR pOleStr = NULL;
            hr = pOleLink->GetSourceDisplayName( &pOleStr );
            if ( SUCCEEDED( hr ) && pOleStr )
            {
                OUString aFilePath( ( sal_Unicode* )pOleStr );
                if ( pMalloc )
                    pMalloc->Free( ( void* )pOleStr );

                hr = OleCreateFromFile( CLSID_NULL,
                                        reinterpret_cast<LPCWSTR>(aFilePath.getStr()),
                                        IID_IUnknown,
                                        OLERENDER_DRAW, // OLERENDER_FORMAT
                                        NULL,
                                        NULL,
                                        m_pNativeImpl->m_pIStorage,
                                        (void**)&m_pNativeImpl->m_pObj );
            }
        }

        // in case of other moniker types the only way is to get storage
        if ( !m_pNativeImpl->m_pObj )
        {
            ComSmart< IBindCtx > pBindCtx;
            hr = CreateBindCtx( 0, ( LPBC FAR* )&pBindCtx );
            if ( SUCCEEDED( hr ) && pBindCtx )
            {
                ComSmart< IStorage > pObjectStorage;
                hr = pMoniker->BindToStorage( pBindCtx, NULL, IID_IStorage, (void**)&pObjectStorage );
                if ( SUCCEEDED( hr ) && pObjectStorage )
                {
                    hr = pObjectStorage->CopyTo( 0, NULL, NULL, m_pNativeImpl->m_pIStorage );
                    if ( SUCCEEDED( hr ) )
                        hr = OleLoad( m_pNativeImpl->m_pIStorage, IID_IUnknown, NULL, (void**)&m_pNativeImpl->m_pObj );
                }
            }
        }
    }

    // If object could not be created the only way is to use graphical representation
    if ( FAILED( hr ) || !m_pNativeImpl->m_pObj )
        throw uno::RuntimeException(); // TODO

    if ( !InitializeObject_Impl() )
        throw uno::RuntimeException(); // TODO
}


void OleComponent::RunObject()
{
    OSL_ENSURE( m_pNativeImpl->m_pOleObject, "The pointer can not be set to NULL here!\n" );
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( !OleIsRunning( m_pNativeImpl->m_pOleObject ) )
    {
        HRESULT hr = OleRun( m_pNativeImpl->m_pObj );

        if ( FAILED( hr ) )
        {
            if ( hr == REGDB_E_CLASSNOTREG )
                throw embed::UnreachableStateException(); // the object server is not installed
            else
                throw io::IOException();
        }
    }
}


awt::Size OleComponent::CalculateWithFactor( const awt::Size& aSize,
                                            const awt::Size& aMultiplier,
                                            const awt::Size& aDivisor )
{
    awt::Size aResult;

    sal_Int64 nWidth = (sal_Int64)aSize.Width * (sal_Int64)aMultiplier.Width / (sal_Int64)aDivisor.Width;
    sal_Int64 nHeight = (sal_Int64)aSize.Height * (sal_Int64)aMultiplier.Height / (sal_Int64)aDivisor.Height;
    OSL_ENSURE( nWidth < SAL_MAX_INT32 && nWidth > SAL_MIN_INT32
             && nHeight < SAL_MAX_INT32 && nHeight > SAL_MIN_INT32,
             "Unacceptable result size!" );

    aResult.Width = (sal_Int32)nWidth;
    aResult.Height = (sal_Int32)nHeight;

    return aResult;
}


void OleComponent::CloseObject()
{
    if ( m_pNativeImpl->m_pOleObject && OleIsRunning( m_pNativeImpl->m_pOleObject ) )
        m_pNativeImpl->m_pOleObject->Close( OLECLOSE_NOSAVE ); // must be saved before
}


uno::Sequence< embed::VerbDescriptor > OleComponent::GetVerbList()
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if( !m_aVerbList.getLength() )
    {
        ComSmart< IEnumOLEVERB > pEnum;
        if( SUCCEEDED( m_pNativeImpl->m_pOleObject->EnumVerbs( &pEnum ) ) )
        {
            OLEVERB     szEle[ MAX_ENUM_ELE ];
            ULONG       nNum = 0;
            sal_Int32   nSeqSize = 0;

            do
            {
                HRESULT hr = pEnum->Next( MAX_ENUM_ELE, szEle, &nNum );
                if( hr == S_OK || hr == S_FALSE )
                {
                    m_aVerbList.realloc( nSeqSize += nNum );
                    for( sal_uInt32 nInd = 0; nInd < nNum; nInd++ )
                    {
                        m_aVerbList[nSeqSize-nNum+nInd].VerbID = szEle[ nInd ].lVerb;
                        m_aVerbList[nSeqSize-nNum+nInd].VerbName = WinAccToVcl_Impl( reinterpret_cast<const sal_Unicode*>(szEle[ nInd ].lpszVerbName) );
                        m_aVerbList[nSeqSize-nNum+nInd].VerbFlags = szEle[ nInd ].fuFlags;
                        m_aVerbList[nSeqSize-nNum+nInd].VerbAttributes = szEle[ nInd ].grfAttribs;
                    }
                }
                else
                    break;
            }
            while( nNum == MAX_ENUM_ELE );
        }
    }

    return m_aVerbList;
}


void OleComponent::ExecuteVerb( sal_Int32 nVerbID )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO

    HRESULT hr = OleRun( m_pNativeImpl->m_pOleObject );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO: a specific exception that transport error code can be thrown here

    // TODO: probably extents should be set here and stored in aRect
    // TODO: probably the parent window also should be set
    hr = m_pNativeImpl->m_pOleObject->DoVerb( nVerbID, NULL, m_pOleWrapClientSite, 0, NULL, NULL );

    if ( FAILED( hr ) )
        throw io::IOException(); // TODO

    // TODO/LATER: the real names should be used here
    m_pNativeImpl->m_pOleObject->SetHostNames( L"app name", L"untitled" );
}


void OleComponent::SetHostName( const OUString&,
                                const OUString& )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    // TODO: use aContName and aEmbDocName in m_pNativeImpl->m_pOleObject->SetHostNames()
}


void OleComponent::SetExtent( const awt::Size& aVisAreaSize, sal_Int64 nAspect )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    DWORD nMSAspect = ( DWORD )nAspect; // first 32 bits are for MS aspects

    SIZEL aSize = { aVisAreaSize.Width, aVisAreaSize.Height };
    HRESULT hr = m_pNativeImpl->m_pOleObject->SetExtent( nMSAspect, &aSize );

    if ( FAILED( hr ) )
    {
        // TODO/LATER: is it correct? In future user code probably should be ready for the exception.
        // if the object is running but not activated, RPC_E_SERVER_DIED error code is returned by OLE package
        // in this case just do nothing
        // Also Visio returns E_FAIL on resize if it is in running state
        // if ( hr != RPC_E_SERVER_DIED )
        throw io::IOException(); // TODO
    }
}


awt::Size OleComponent::GetExtent( sal_Int64 nAspect )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    DWORD nMSAspect = ( DWORD )nAspect; // first 32 bits are for MS aspects
    awt::Size aSize;
    sal_Bool bGotSize = sal_False;

    if ( nMSAspect == DVASPECT_CONTENT )
    {
        // Try to get the size from the replacement image first
        ComSmart< IDataObject > pDataObject;
        HRESULT hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
        if ( SUCCEEDED( hr ) || pDataObject )
        {
            STGMEDIUM aMedium;
            FORMATETC aFormat = pFormatTemplates[1]; // use windows metafile format
            aFormat.dwAspect = nMSAspect;

            hr = pDataObject->GetData( &aFormat, &aMedium );
            if ( SUCCEEDED( hr ) && aMedium.tymed == TYMED_MFPICT ) // Win Metafile
            {
                METAFILEPICT* pMF = ( METAFILEPICT* )GlobalLock( aMedium.hMetaFilePict );
                if ( pMF )
                {
                    // the object uses 0.01 mm as unit, so the metafile size should be converted to object unit
                    sal_Int64 nMult = 1;
                    sal_Int64 nDiv = 1;
                    switch( pMF->mm )
                    {
                        case MM_HIENGLISH:
                            nMult = 254;
                            nDiv = 100;
                            break;

                        case MM_LOENGLISH:
                            nMult = 254;
                            nDiv = 10;
                            break;

                        case MM_LOMETRIC:
                            nMult = 10;
                            break;

                        case MM_TWIPS:
                            nMult = 254;
                            nDiv = 144;
                            break;

                        case MM_ISOTROPIC:
                        case MM_ANISOTROPIC:
                        case MM_HIMETRIC:
                            // do nothing
                            break;
                    }

                    sal_Int64 nX = ( (sal_Int64)abs( pMF->xExt ) ) * nMult / nDiv;
                    sal_Int64 nY = ( (sal_Int64)abs( pMF->yExt ) ) * nMult / nDiv;
                    if (  nX < SAL_MAX_INT32 && nY < SAL_MAX_INT32 )
                    {
                        aSize.Width = ( sal_Int32 )nX;
                        aSize.Height = ( sal_Int32 )nY;
                        bGotSize = sal_True;
                    }
                    else
                        OSL_FAIL( "Unexpected size is provided!" );
                }
            }
            // i113605, to release storage medium
            if ( SUCCEEDED( hr ) )
                ::ReleaseStgMedium(&aMedium);
        }
    }

    if ( !bGotSize )
        throw lang::IllegalArgumentException();

    return aSize;
}


awt::Size OleComponent::GetCachedExtent( sal_Int64 nAspect )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    DWORD nMSAspect = ( DWORD )nAspect; // first 32 bits are for MS aspects
    SIZEL aSize;

    HRESULT hr = m_pNativeImpl->m_pViewObject2->GetExtent( nMSAspect, -1, NULL, &aSize );

    if ( FAILED( hr ) )
    {
        // TODO/LATER: is it correct?
        // if there is no appropriate cache for the aspect, OLE_E_BLANK error code is returned
        // if ( hr == OLE_E_BLANK )
        //  throw lang::IllegalArgumentException();
        //else
        //  throw io::IOException(); // TODO

        throw lang::IllegalArgumentException();
    }

    return awt::Size( aSize.cx, aSize.cy );
}


awt::Size OleComponent::GetReccomendedExtent( sal_Int64 nAspect )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    DWORD nMSAspect = ( DWORD )nAspect; // first 32 bits are for MS aspects
    SIZEL aSize;
    HRESULT hr = m_pNativeImpl->m_pOleObject->GetExtent( nMSAspect, &aSize );
    if ( FAILED( hr ) )
        throw lang::IllegalArgumentException();

    return awt::Size( aSize.cx, aSize.cy );
}


sal_Int64 OleComponent::GetMiscStatus( sal_Int64 nAspect )
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    sal_uInt32 nResult;
    m_pNativeImpl->m_pOleObject->GetMiscStatus( ( DWORD )nAspect, ( DWORD* )&nResult );
    return ( sal_Int64 )nResult; // first 32 bits are for MS flags
}


uno::Sequence< sal_Int8 > OleComponent::GetCLSID()
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    GUID aCLSID;
    HRESULT hr = m_pNativeImpl->m_pOleObject->GetUserClassID( &aCLSID );
    if ( FAILED( hr ) )
        throw io::IOException(); // TODO:

    return  MimeConfigurationHelper::GetSequenceClassID( aCLSID.Data1, aCLSID.Data2, aCLSID.Data3,
                                aCLSID.Data4[0], aCLSID.Data4[1],
                                aCLSID.Data4[2], aCLSID.Data4[3],
                                aCLSID.Data4[4], aCLSID.Data4[5],
                                aCLSID.Data4[6], aCLSID.Data4[7] );
}


sal_Bool OleComponent::IsDirty()
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( IsWorkaroundActive() )
        return sal_True;

    ComSmart< IPersistStorage > pPersistStorage;
    HRESULT hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IPersistStorage, (void**)&pPersistStorage );
    if ( FAILED( hr ) || !pPersistStorage )
        throw io::IOException(); // TODO

    hr = pPersistStorage->IsDirty();
    return ( hr != S_FALSE );
}


void OleComponent::StoreOwnTmpIfNecessary()
{
    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    ComSmart< IPersistStorage > pPersistStorage;
    HRESULT hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IPersistStorage, (void**)&pPersistStorage );
    if ( FAILED( hr ) || !pPersistStorage )
        throw io::IOException(); // TODO

    if ( m_bWorkaroundActive || pPersistStorage->IsDirty() != S_FALSE )
    {
        hr = OleSave( pPersistStorage, m_pNativeImpl->m_pIStorage, TRUE );
        if ( FAILED( hr ) )
        {
            // Till now was required only for AcrobatReader7.0.8
            GUID aCLSID;
            hr = m_pNativeImpl->m_pOleObject->GetUserClassID( &aCLSID );
            if ( FAILED( hr ) )
                throw io::IOException(); // TODO

            hr = WriteClassStg( m_pNativeImpl->m_pIStorage, aCLSID );
            if ( FAILED( hr ) )
                throw io::IOException(); // TODO

            // the result of the following call is not checked because some objects, for example AcrobatReader7.0.8
            // return error even in case the saving was done correctly
            hr = pPersistStorage->Save( m_pNativeImpl->m_pIStorage, TRUE );

            // another workaround for AcrobatReader7.0.8 object, this object might think that it is not changed
            // when it has been created from file, although it must be saved
            m_bWorkaroundActive = sal_True;
        }

        hr = m_pNativeImpl->m_pIStorage->Commit( STGC_DEFAULT );
        if ( FAILED( hr ) )
            throw io::IOException(); // TODO

        hr = pPersistStorage->SaveCompleted( NULL );
        if ( FAILED( hr ) && hr != E_UNEXPECTED )
            throw io::IOException(); // TODO

    }
}


sal_Bool OleComponent::SaveObject_Impl()
{
    sal_Bool bResult = sal_False;
    OleEmbeddedObject* pLockObject = NULL;

    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pUnoOleObject )
        {
            pLockObject = m_pUnoOleObject;
            pLockObject->acquire();
        }
    }

    if ( pLockObject )
    {
        bResult = pLockObject->SaveObject_Impl();
        pLockObject->release();
    }

    return bResult;
}


sal_Bool OleComponent::OnShowWindow_Impl( bool bShow )
{
    sal_Bool bResult = sal_False;
    OleEmbeddedObject* pLockObject = NULL;

    {
        osl::MutexGuard aGuard( m_aMutex );

        if ( m_pUnoOleObject )
        {
            pLockObject = m_pUnoOleObject;
            pLockObject->acquire();
        }
    }

    if ( pLockObject )
    {
        bResult = pLockObject->OnShowWindow_Impl( bShow );
        pLockObject->release();
    }

    return bResult;
}


void OleComponent::OnViewChange_Impl( sal_uInt32 dwAspect )
{
    // TODO: check if it is enough or may be saving notifications are required for Visio2000
    ::rtl::Reference< OleEmbeddedObject > xLockObject;

    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pUnoOleObject )
            xLockObject = m_pUnoOleObject;
    }

    if ( xLockObject.is() )
    {
        uno::Reference < awt::XRequestCallback > xRequestCallback(
            m_xFactory->createInstance(
             OUString("com.sun.star.awt.AsyncCallback")),
             uno::UNO_QUERY );
        xRequestCallback->addCallback( new MainThreadNotificationRequest( xLockObject, OLECOMP_ONVIEWCHANGE, dwAspect ), uno::Any() );
    }
}


void OleComponent::OnClose_Impl()
{
    ::rtl::Reference< OleEmbeddedObject > xLockObject;

    {
        osl::MutexGuard aGuard( m_aMutex );
        if ( m_pUnoOleObject )
            xLockObject = m_pUnoOleObject;
    }

    if ( xLockObject.is() )
    {
        uno::Reference < awt::XRequestCallback > xRequestCallback(
            m_xFactory->createInstance(
             OUString("com.sun.star.awt.AsyncCallback")),
             uno::UNO_QUERY );
        xRequestCallback->addCallback( new MainThreadNotificationRequest( xLockObject, OLECOMP_ONCLOSE ), uno::Any() );
    }
}

// XCloseable

void SAL_CALL OleComponent::close( sal_Bool bDeliverOwnership )
    throw ( util::CloseVetoException,
            uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    uno::Reference< uno::XInterface > xSelfHold( static_cast< ::cppu::OWeakObject* >( this ) );
    lang::EventObject aSource( static_cast< ::cppu::OWeakObject* >( this ) );

    if ( m_pInterfaceContainer )
    {
        ::cppu::OInterfaceContainerHelper* pContainer =
            m_pInterfaceContainer->getContainer( ::getCppuType( ( const uno::Reference< util::XCloseListener >* ) NULL ) );
        if ( pContainer != NULL )
        {
            ::cppu::OInterfaceIteratorHelper pIterator( *pContainer );
            while ( pIterator.hasMoreElements() )
            {
                try
                {
                    ( (util::XCloseListener* )pIterator.next() )->queryClosing( aSource, bDeliverOwnership );
                }
                catch( const uno::RuntimeException& )
                {
                    pIterator.remove();
                }
            }
        }

        pContainer = m_pInterfaceContainer->getContainer(
                                    ::getCppuType( ( const uno::Reference< util::XCloseListener >* ) NULL ) );
        if ( pContainer != NULL )
        {
            ::cppu::OInterfaceIteratorHelper pCloseIterator( *pContainer );
            while ( pCloseIterator.hasMoreElements() )
            {
                try
                {
                    ( (util::XCloseListener* )pCloseIterator.next() )->notifyClosing( aSource );
                }
                catch( const uno::RuntimeException& )
                {
                    pCloseIterator.remove();
                }
            }
        }
    }

    Dispose();
}


void SAL_CALL OleComponent::addCloseListener( const uno::Reference< util::XCloseListener >& xListener )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pInterfaceContainer )
        m_pInterfaceContainer = new ::cppu::OMultiTypeInterfaceContainerHelper( m_aMutex );

    m_pInterfaceContainer->addInterface( ::getCppuType( ( const uno::Reference< util::XCloseListener >* )0 ), xListener );
}


void SAL_CALL OleComponent::removeCloseListener( const uno::Reference< util::XCloseListener >& xListener )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( m_pInterfaceContainer )
        m_pInterfaceContainer->removeInterface( ::getCppuType( ( const uno::Reference< util::XCloseListener >* )0 ),
                                                xListener );
}

// XTransferable

uno::Any SAL_CALL OleComponent::getTransferData( const datatransfer::DataFlavor& aFlavor )
    throw ( datatransfer::UnsupportedFlavorException,
            io::IOException,
            uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    uno::Any aResult;
    sal_Bool bSupportedFlavor = sal_False;

    if ( m_pNativeImpl->GraphicalFlavor( aFlavor ) )
    {
        DWORD nRequestedAspect = GetAspectFromFlavor( aFlavor );
        // if own icon is set and icon aspect is requested the own icon can be returned directly

        ComSmart< IDataObject > pDataObject;
        HRESULT hr = m_pNativeImpl->m_pObj->QueryInterface( IID_IDataObject, (void**)&pDataObject );
        if ( FAILED( hr ) || !pDataObject )
            throw io::IOException(); // TODO: transport error code

        // The following optimization does not make much sence currently just because
        // only one aspect is supported, and only three formats for the aspect are supported
        // and moreover it is not guarantied that the once returned format will be supported further
        // example - i52106
        // TODO/LATER: bring the optimization back when other aspects are supported

        // FORMATETC* pFormatEtc = m_pNativeImpl->GetSupportedFormatForAspect( nRequestedAspect );
        // if ( pFormatEtc )
        // {
        //  STGMEDIUM aMedium;
        //  hr = pDataObject->GetData( pFormatEtc, &aMedium );
        //  if ( SUCCEEDED( hr ) )
        //      bSupportedFlavor = m_pNativeImpl->ConvertDataForFlavor( aMedium, aFlavor, aResult );
        // }
        // else
        {
            // the supported format of the application is still not found, find one
            for ( sal_Int32 nInd = 0; nInd < FORMATS_NUM; nInd++ )
            {
                STGMEDIUM aMedium;
                FORMATETC aFormat = pFormatTemplates[nInd];
                aFormat.dwAspect = nRequestedAspect;

                hr = pDataObject->GetData( &aFormat, &aMedium );
                if ( SUCCEEDED( hr ) )
                {
                    bSupportedFlavor = m_pNativeImpl->ConvertDataForFlavor( aMedium, aFlavor, aResult );
                    ::ReleaseStgMedium(&aMedium);     // i113605, to release storage medium
                    if ( bSupportedFlavor )
                    {
                        // TODO/LATER: bring the optimization back when other aspects are supported
                        // m_pNativeImpl->AddSupportedFormat( aFormat );
                        break;
                    }
                }
            }
        }

        // If the replacement could not be retrieved, the cached representaion should be used
        // currently it is not necessary to retrieve it here, so it is implemented in the object itself
    }
    // TODO: Investigate if there is already the format name
    //       and whether this format is really required
    else if ( aFlavor.DataType == getCppuType( ( const uno::Reference< io::XInputStream >* ) 0 )
            && aFlavor.MimeType == "application/x-openoffice-contentstream" )
    {
        // allow to retrieve stream-representation of the object persistence
        bSupportedFlavor = sal_True;
        uno::Reference < io::XStream > xTempFileStream(
            io::TempFile::create(comphelper::getComponentContext(m_xFactory)),
            uno::UNO_QUERY_THROW );

        uno::Reference< io::XOutputStream > xTempOutStream = xTempFileStream->getOutputStream();
        uno::Reference< io::XInputStream > xTempInStream = xTempFileStream->getInputStream();
        if ( xTempOutStream.is() && xTempInStream.is() )
        {
            OSL_ENSURE( m_pUnoOleObject, "Unexpected object absence!" );
            if ( !m_pUnoOleObject )
            throw uno::RuntimeException();

            m_pUnoOleObject->StoreObjectToStream( xTempOutStream );

            xTempOutStream->closeOutput();
            xTempOutStream = uno::Reference< io::XOutputStream >();
        }
        else
            throw io::IOException(); // TODO:

        aResult <<= xTempInStream;
    }

    if ( !bSupportedFlavor )
        throw datatransfer::UnsupportedFlavorException();

    return aResult;
}


uno::Sequence< datatransfer::DataFlavor > SAL_CALL OleComponent::getTransferDataFlavors()
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    RetrieveObjectDataFlavors_Impl();

    return m_aDataFlavors;
}


sal_Bool SAL_CALL OleComponent::isDataFlavorSupported( const datatransfer::DataFlavor& aFlavor )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pNativeImpl->m_pOleObject )
        throw embed::WrongStateException(); // TODO: the object is in wrong state

    if ( !m_aDataFlavors.getLength() )
    {
        RetrieveObjectDataFlavors_Impl();
    }

    for ( sal_Int32 nInd = 0; nInd < m_aDataFlavors.getLength(); nInd++ )
        if ( m_aDataFlavors[nInd].MimeType.equals( aFlavor.MimeType ) && m_aDataFlavors[nInd].DataType == aFlavor.DataType )
            return sal_True;

    return sal_False;
}

void SAL_CALL OleComponent::dispose() throw (::com::sun::star::uno::RuntimeException)
{
    try
    {
        close( sal_True );
    }
    catch ( const uno::Exception& )
    {
    }
}

void SAL_CALL OleComponent::addEventListener( const uno::Reference< lang::XEventListener >& xListener )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pInterfaceContainer )
        m_pInterfaceContainer = new ::cppu::OMultiTypeInterfaceContainerHelper( m_aMutex );

    m_pInterfaceContainer->addInterface( ::getCppuType( ( const uno::Reference< lang::XEventListener >* )0 ), xListener );
}


void SAL_CALL OleComponent::removeEventListener( const uno::Reference< lang::XEventListener >& xListener )
    throw ( uno::RuntimeException )
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( m_pInterfaceContainer )
        m_pInterfaceContainer->removeInterface( ::getCppuType( ( const uno::Reference< lang::XEventListener >* )0 ),
                                                xListener );
}

sal_Int64 SAL_CALL OleComponent::getSomething( const ::com::sun::star::uno::Sequence< sal_Int8 >& aIdentifier ) throw(::com::sun::star::uno::RuntimeException)
{
    try
    {
        uno::Sequence < sal_Int8 > aCLSID = GetCLSID();
        if ( MimeConfigurationHelper::ClassIDsEqual( aIdentifier, aCLSID ) )
            return (sal_Int64) (IUnknown*) m_pNativeImpl->m_pObj;

        // compatibility hack for old versions: CLSID was used in wrong order (SvGlobalName order)
        sal_Int32 nLength = aIdentifier.getLength();
        if ( nLength == 16 )
        {
            for ( sal_Int32 n=8; n<16; n++ )
                if ( aIdentifier[n] != aCLSID[n] )
                    return 0;
            if ( aIdentifier[7] == aCLSID[6] &&
                 aIdentifier[6] == aCLSID[7] &&
                 aIdentifier[5] == aCLSID[4] &&
                 aIdentifier[4] == aCLSID[5] &&
                 aIdentifier[3] == aCLSID[0] &&
                 aIdentifier[2] == aCLSID[1] &&
                 aIdentifier[1] == aCLSID[2] &&
                 aIdentifier[0] == aCLSID[3] )
                return (sal_Int64) (IUnknown*) m_pNativeImpl->m_pObj;
        }
    }
    catch ( const uno::Exception& )
    {
    }

    return 0;
}

sal_Bool SAL_CALL OleComponent::isModified() throw (::com::sun::star::uno::RuntimeException)
{
    return m_bModified;
}

void SAL_CALL OleComponent::setModified( sal_Bool bModified )
        throw (::com::sun::star::beans::PropertyVetoException, ::com::sun::star::uno::RuntimeException)
{
    m_bModified = bModified;

    if ( bModified && m_pInterfaceContainer )
    {
        ::cppu::OInterfaceContainerHelper* pContainer =
            m_pInterfaceContainer->getContainer( ::getCppuType( ( const uno::Reference< util::XModifyListener >* ) NULL ) );
        if ( pContainer != NULL )
        {
            ::cppu::OInterfaceIteratorHelper pIterator( *pContainer );
            while ( pIterator.hasMoreElements() )
            {
                try
                {
                    lang::EventObject aEvent( (util::XModifiable*) this );
                    ((util::XModifyListener*)pIterator.next())->modified( aEvent );
                }
                catch( const uno::RuntimeException& )
                {
                    pIterator.remove();
                }
            }
        }
    }
}

void SAL_CALL OleComponent::addModifyListener( const com::sun::star::uno::Reference < com::sun::star::util::XModifyListener >& xListener ) throw(::com::sun::star::uno::RuntimeException)
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( !m_pInterfaceContainer )
        m_pInterfaceContainer = new ::cppu::OMultiTypeInterfaceContainerHelper( m_aMutex );

    m_pInterfaceContainer->addInterface( ::getCppuType( ( const uno::Reference< util::XModifyListener >* )0 ), xListener );
}

void SAL_CALL OleComponent::removeModifyListener( const com::sun::star::uno::Reference < com::sun::star::util::XModifyListener >& xListener) throw(::com::sun::star::uno::RuntimeException)
{
    ::osl::MutexGuard aGuard( m_aMutex );
    if ( m_bDisposed )
        throw lang::DisposedException(); // TODO

    if ( m_pInterfaceContainer )
        m_pInterfaceContainer->removeInterface( ::getCppuType( ( const uno::Reference< util::XModifyListener >* )0 ),
                                                xListener );
}

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