libreoffice/svtools/source/misc/transfer.cxx

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2000, 2010 Oracle and/or its affiliates.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * 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.
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_svtools.hxx"
#ifdef WNT
#include <prewin.h>
#include <postwin.h>
#include <shlobj.h>
#endif
#include <osl/mutex.hxx>
#include <rtl/memory.h>
#include <rtl/uuid.h>
#include <rtl/uri.hxx>
#include <tools/debug.hxx>
#include <tools/urlobj.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <sot/exchange.hxx>
#include <sot/storage.hxx>
#include <vcl/bitmap.hxx>
#include <vcl/gdimtf.hxx>
#include <vcl/graph.hxx>
#include <vcl/cvtgrf.hxx>
#include <vcl/svapp.hxx>
#include <vcl/window.hxx>
#include <comphelper/processfactory.hxx>
#include <sot/filelist.hxx>
#include <cppuhelper/implbase1.hxx>

#include <comphelper/seqstream.hxx>
#include <com/sun/star/datatransfer/clipboard/XClipboardNotifier.hpp>
#include <com/sun/star/datatransfer/clipboard/XFlushableClipboard.hpp>
#include <com/sun/star/datatransfer/XMimeContentTypeFactory.hpp>
#include <com/sun/star/datatransfer/XMimeContentType.hpp>
#include <com/sun/star/frame/XDesktop.hpp>
#include <com/sun/star/lang/XInitialization.hpp>

#include "svl/urlbmk.hxx"
#include "inetimg.hxx"
#include <svtools/wmf.hxx>
#include <svtools/imap.hxx>
#include <svtools/transfer.hxx>
#include <cstdio>

// --------------
// - Namespaces -
// --------------

using namespace ::com::sun::star::uno;
using namespace ::com::sun::star::lang;
using namespace ::com::sun::star::frame;
using namespace ::com::sun::star::io;
using namespace ::com::sun::star::datatransfer;
using namespace ::com::sun::star::datatransfer::clipboard;
using namespace ::com::sun::star::datatransfer::dnd;

// --------------------------------
// - TransferableObjectDescriptor -
// --------------------------------

#define TOD_SIG1 0x01234567
#define TOD_SIG2 0x89abcdef

SvStream& operator>>( SvStream& rIStm, TransferableObjectDescriptor& rObjDesc )
{
    sal_uInt32  nSize, nViewAspect, nSig1, nSig2;

    rIStm >> nSize;
    rIStm >> rObjDesc.maClassName;
    rIStm >> nViewAspect;
    rIStm >> rObjDesc.maSize.Width();
    rIStm >> rObjDesc.maSize.Height();
    rIStm >> rObjDesc.maDragStartPos.X();
    rIStm >> rObjDesc.maDragStartPos.Y();
    rIStm.ReadByteString( rObjDesc.maTypeName, gsl_getSystemTextEncoding() );
    rIStm.ReadByteString( rObjDesc.maDisplayName, gsl_getSystemTextEncoding() );
    rIStm >> nSig1 >> nSig2;

    rObjDesc.mnViewAspect = static_cast< sal_uInt16 >( nViewAspect );

    // don't use width/height info from external objects
    if( ( TOD_SIG1 != nSig1 ) || ( TOD_SIG2 != nSig2 ) )
    {
        rObjDesc.maSize.Width() = 0;
        rObjDesc.maSize.Height() = 0;
    }

    return rIStm;
}

// -----------------------------------------------------------------------------

SvStream& operator<<( SvStream& rOStm, const TransferableObjectDescriptor& rObjDesc )
{
    const sal_uInt32    nFirstPos = rOStm.Tell(), nViewAspect = rObjDesc.mnViewAspect;
    const sal_uInt32    nSig1 = TOD_SIG1, nSig2 = TOD_SIG2;

    rOStm.SeekRel( 4 );
    rOStm << rObjDesc.maClassName;
    rOStm << nViewAspect;
    rOStm << rObjDesc.maSize.Width();
    rOStm << rObjDesc.maSize.Height();
    rOStm << rObjDesc.maDragStartPos.X();
    rOStm << rObjDesc.maDragStartPos.Y();
    rOStm.WriteByteString( rObjDesc.maTypeName, gsl_getSystemTextEncoding() );
    rOStm.WriteByteString( rObjDesc.maDisplayName, gsl_getSystemTextEncoding() );
    rOStm << nSig1 << nSig2;

    const sal_uInt32 nLastPos = rOStm.Tell();

    rOStm.Seek( nFirstPos );
    rOStm << ( nLastPos - nFirstPos );
    rOStm.Seek( nLastPos );

    return rOStm;
}

// -----------------------------------------------------------------------------
// the reading of the parameter is done using the special service ::com::sun::star::datatransfer::MimeContentType,
// a similar approach should be implemented for creation of the mimetype string;
// for now the set of acceptable characters has to be hardcoded, in future it should be part of the service that creates the mimetype
const ::rtl::OUString aQuotedParamChars = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "()<>@,;:\\\"/[]?=!#$%&'*+-0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ^_`abcdefghijklmnopqrstuvwxyz{|}~. " ) );

static ::rtl::OUString ImplGetParameterString( const TransferableObjectDescriptor& rObjDesc )
{
    const ::rtl::OUString   aChar( RTL_CONSTASCII_USTRINGPARAM( "\"" ));
    const ::rtl::OUString   aClassName( rObjDesc.maClassName.GetHexName() );
    ::rtl::OUString         aParams;

    if( aClassName.getLength() )
    {
        aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";classname=\"" ));
        aParams += aClassName;
        aParams += aChar;
    }

    if( rObjDesc.maTypeName.Len() )
    {
        aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";typename=\"" ));
        aParams += rObjDesc.maTypeName;
        aParams += aChar;
    }

    if( rObjDesc.maDisplayName.Len() )
    {
        // the display name might contain unacceptable characters, encode all of them
        // this seems to be the only parameter currently that might contain such characters
        sal_Bool pToAccept[128];
        for ( sal_Int32 nBInd = 0; nBInd < 128; nBInd++ )
            pToAccept[nBInd] = sal_False;

        for ( sal_Int32 nInd = 0; nInd < aQuotedParamChars.getLength(); nInd++ )
        {
            sal_Unicode nChar = aQuotedParamChars.getStr()[nInd];
            if ( nChar < 128 )
                pToAccept[nChar] = sal_True;
        }

        aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";displayname=\"" ));
        aParams += ::rtl::Uri::encode( rObjDesc.maDisplayName, pToAccept, rtl_UriEncodeIgnoreEscapes, RTL_TEXTENCODING_UTF8 );
        aParams += aChar;
    }

    aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";viewaspect=\"" ));
    aParams += ::rtl::OUString::valueOf( static_cast< sal_Int32 >( rObjDesc.mnViewAspect ) );
    aParams += aChar;

    aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";width=\"" ));
    aParams += ::rtl::OUString::valueOf( rObjDesc.maSize.Width() );
    aParams += aChar;

    aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";height=\"" ));
    aParams += ::rtl::OUString::valueOf( rObjDesc.maSize.Height() );
    aParams += aChar;

    aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";posx=\"" ));
    aParams += ::rtl::OUString::valueOf( rObjDesc.maDragStartPos.X() );
    aParams += aChar;

    aParams += ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( ";posy=\"" ));
    aParams += ::rtl::OUString::valueOf( rObjDesc.maDragStartPos.X() );
    aParams += aChar;

    return aParams;
}

// -----------------------------------------------------------------------------

static void ImplSetParameterString( TransferableObjectDescriptor& rObjDesc, const DataFlavorEx& rFlavorEx )
{
    Reference< XMultiServiceFactory >       xFact( ::comphelper::getProcessServiceFactory() );
    Reference< XMimeContentTypeFactory >    xMimeFact;

    try
    {
        if( xFact.is() )
        {
            xMimeFact = Reference< XMimeContentTypeFactory >( xFact->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.datatransfer.MimeContentTypeFactory" )) ),
                                                              UNO_QUERY );
        }

        if( xMimeFact.is() )
        {
            Reference< XMimeContentType > xMimeType( xMimeFact->createMimeContentType( rFlavorEx.MimeType ) );

            if( xMimeType.is() )
            {
                const ::rtl::OUString aClassNameString(RTL_CONSTASCII_USTRINGPARAM( "classname" ));
                const ::rtl::OUString aTypeNameString(RTL_CONSTASCII_USTRINGPARAM( "typename" ));
                const ::rtl::OUString aDisplayNameString(RTL_CONSTASCII_USTRINGPARAM( "displayname" ));
                const ::rtl::OUString aViewAspectString(RTL_CONSTASCII_USTRINGPARAM( "viewaspect" ));
                const ::rtl::OUString aWidthString(RTL_CONSTASCII_USTRINGPARAM( "width" ));
                const ::rtl::OUString aHeightString(RTL_CONSTASCII_USTRINGPARAM( "height" ));
                const ::rtl::OUString aPosXString(RTL_CONSTASCII_USTRINGPARAM( "posx" ));
                const ::rtl::OUString aPosYString(RTL_CONSTASCII_USTRINGPARAM( "posy" ));

                if( xMimeType->hasParameter( aClassNameString ) )
                {
                    rObjDesc.maClassName.MakeId( xMimeType->getParameterValue( aClassNameString ) );
                }

                if( xMimeType->hasParameter( aTypeNameString ) )
                {
                    rObjDesc.maTypeName = xMimeType->getParameterValue( aTypeNameString );
                }

                if( xMimeType->hasParameter( aDisplayNameString ) )
                {
                    // the display name might contain unacceptable characters, in this case they should be encoded
                    // this seems to be the only parameter currently that might contain such characters
                    rObjDesc.maDisplayName = ::rtl::Uri::decode( xMimeType->getParameterValue( aDisplayNameString ), rtl_UriDecodeWithCharset, RTL_TEXTENCODING_UTF8 );
                }

                if( xMimeType->hasParameter( aViewAspectString ) )
                {
                    rObjDesc.mnViewAspect = static_cast< sal_uInt16 >( xMimeType->getParameterValue( aViewAspectString ).toInt32() );
                }

                if( xMimeType->hasParameter( aWidthString ) )
                {
                    rObjDesc.maSize.Width() = xMimeType->getParameterValue( aWidthString ).toInt32();
                }

                if( xMimeType->hasParameter( aHeightString ) )
                {
                    rObjDesc.maSize.Height() = xMimeType->getParameterValue( aHeightString ).toInt32();
                }

                if( xMimeType->hasParameter( aPosXString ) )
                {
                    rObjDesc.maDragStartPos.X() = xMimeType->getParameterValue( aPosXString ).toInt32();
                }

                if( xMimeType->hasParameter( aPosYString ) )
                {
                    rObjDesc.maDragStartPos.Y() = xMimeType->getParameterValue( aPosYString ).toInt32();
                }
            }
        }
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }
}

// -----------------------------------------
// - TransferableHelper::TerminateListener -
// -----------------------------------------

TransferableHelper::TerminateListener::TerminateListener( TransferableHelper& rTransferableHelper ) :
    mrParent( rTransferableHelper )
{
}

// -----------------------------------------------------------------------------

TransferableHelper::TerminateListener::~TerminateListener()
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::TerminateListener::disposing( const EventObject& ) throw( RuntimeException )
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::TerminateListener::queryTermination( const EventObject& ) throw( TerminationVetoException, RuntimeException )
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::TerminateListener::notifyTermination( const EventObject& ) throw( RuntimeException )
{
    mrParent.ImplFlush();
}

// ----------------------
// - TransferableHelper -
// ----------------------

TransferableHelper::TransferableHelper() :
    mpFormats( new DataFlavorExVector ),
    mpObjDesc( NULL )
{
}

// -----------------------------------------------------------------------------

TransferableHelper::~TransferableHelper()
{
    delete mpObjDesc;
    delete mpFormats;
}

// -----------------------------------------------------------------------------

Any SAL_CALL TransferableHelper::getTransferData( const DataFlavor& rFlavor ) throw( UnsupportedFlavorException, IOException, RuntimeException )
{
    if( !maAny.hasValue() || !mpFormats->size() || ( maLastFormat != rFlavor.MimeType ) )
    {
        const SolarMutexGuard aGuard;

        maLastFormat = rFlavor.MimeType;
        maAny = Any();

        try
        {
            DataFlavor  aSubstFlavor;
            sal_Bool    bDone = sal_False;

            // add formats if not already done
            if( !mpFormats->size() )
                AddSupportedFormats();

            // check alien formats first and try to get a substitution format
            if( SotExchange::GetFormatDataFlavor( FORMAT_STRING, aSubstFlavor ) &&
                TransferableDataHelper::IsEqual( aSubstFlavor, rFlavor ) )
            {
                GetData( aSubstFlavor );
                bDone = maAny.hasValue();
            }
            else if( SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_BMP, aSubstFlavor ) &&
                     TransferableDataHelper::IsEqual( aSubstFlavor, rFlavor ) &&
                     SotExchange::GetFormatDataFlavor( FORMAT_BITMAP, aSubstFlavor ) )
            {
                GetData( aSubstFlavor );
                bDone = sal_True;
            }
            else if( SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_EMF, aSubstFlavor ) &&
                     TransferableDataHelper::IsEqual( aSubstFlavor, rFlavor ) &&
                     SotExchange::GetFormatDataFlavor( FORMAT_GDIMETAFILE, aSubstFlavor ) )
            {
                GetData( aSubstFlavor );

                if( maAny.hasValue() )
                {
                    Sequence< sal_Int8 > aSeq;

                    if( maAny >>= aSeq )
                    {
                        SvMemoryStream* pSrcStm = new SvMemoryStream( (char*) aSeq.getConstArray(), aSeq.getLength(), STREAM_WRITE | STREAM_TRUNC );
                        GDIMetaFile     aMtf;

                        *pSrcStm >> aMtf;
                        delete pSrcStm;

                        Graphic         aGraphic( aMtf );
                        SvMemoryStream  aDstStm( 65535, 65535 );

                        if( GraphicConverter::Export( aDstStm, aGraphic, CVT_EMF ) == ERRCODE_NONE )
                        {
                            maAny <<= ( aSeq = Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aDstStm.GetData() ),
                                                                     aDstStm.Seek( STREAM_SEEK_TO_END ) ) );
                            bDone = sal_True;
                        }
                    }
                }
            }
            else if( SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_WMF, aSubstFlavor ) &&
                     TransferableDataHelper::IsEqual( aSubstFlavor, rFlavor ) &&
                     SotExchange::GetFormatDataFlavor( FORMAT_GDIMETAFILE, aSubstFlavor ) )
            {
                GetData( aSubstFlavor );

                if( maAny.hasValue() )
                {
                    Sequence< sal_Int8 > aSeq;

                    if( maAny >>= aSeq )
                    {
                        SvMemoryStream* pSrcStm = new SvMemoryStream( (char*) aSeq.getConstArray(), aSeq.getLength(), STREAM_WRITE | STREAM_TRUNC );
                        GDIMetaFile     aMtf;

                        *pSrcStm >> aMtf;
                        delete pSrcStm;

                        SvMemoryStream  aDstStm( 65535, 65535 );

                        // taking wmf without file header
                        if ( ConvertGDIMetaFileToWMF( aMtf, aDstStm, NULL, sal_False ) )
                        {
                            maAny <<= ( aSeq = Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aDstStm.GetData() ),
                                                                     aDstStm.Seek( STREAM_SEEK_TO_END ) ) );
                            bDone = sal_True;
                        }
                    }
                }
            }

            // reset Any if substitute doesn't work
            if( !bDone && maAny.hasValue() )
                maAny = Any();

            // if any is not yet filled, use standard format
            if( !maAny.hasValue() )
                GetData( rFlavor );

#ifdef DEBUG
            if( maAny.hasValue() && ::com::sun::star::uno::TypeClass_STRING != maAny.getValueType().getTypeClass() )
                fprintf( stderr, "TransferableHelper delivers sequence of data [ %s ]\n", ByteString( String( rFlavor.MimeType), RTL_TEXTENCODING_ASCII_US ).GetBuffer() );
#endif
        }
        catch( const ::com::sun::star::uno::Exception& )
        {
        }

        if( !maAny.hasValue() )
            throw UnsupportedFlavorException();
    }

    return maAny;
}

// -----------------------------------------------------------------------------

Sequence< DataFlavor > SAL_CALL TransferableHelper::getTransferDataFlavors() throw( RuntimeException )
{
    const SolarMutexGuard aGuard;

    try
    {
        if( !mpFormats->size() )
            AddSupportedFormats();
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }

    Sequence< DataFlavor >          aRet( mpFormats->size() );
    DataFlavorExVector::iterator    aIter( mpFormats->begin() ), aEnd( mpFormats->end() );
    sal_uInt32                      nCurPos = 0;

    while( aIter != aEnd )
    {
        aRet[ nCurPos++ ] = *aIter++;
    }

    return aRet;
}

// -----------------------------------------------------------------------------

sal_Bool SAL_CALL TransferableHelper::isDataFlavorSupported( const DataFlavor& rFlavor ) throw( RuntimeException )
{
    const SolarMutexGuard aGuard;
    sal_Bool            bRet = sal_False;

    try
    {
        if( !mpFormats->size() )
            AddSupportedFormats();
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }

    DataFlavorExVector::iterator aIter( mpFormats->begin() ), aEnd( mpFormats->end() );

    while( aIter != aEnd )
    {
        if( TransferableDataHelper::IsEqual( *aIter, rFlavor ) )
        {
            aIter = aEnd;
            bRet = sal_True;
        }
        else
            aIter++;
    }

    return bRet;
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::lostOwnership( const Reference< XClipboard >&, const Reference< XTransferable >& ) throw( RuntimeException )
{
    const SolarMutexGuard aGuard;

    try
    {
        if( mxTerminateListener.is() )
        {
            Reference< XMultiServiceFactory > xFact( ::comphelper::getProcessServiceFactory() );

            if( xFact.is() )
            {
                Reference< XDesktop > xDesktop( xFact->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.frame.Desktop" )) ), UNO_QUERY );

                if( xDesktop.is() )
                    xDesktop->removeTerminateListener( mxTerminateListener );
            }

            mxTerminateListener = Reference< XTerminateListener >();
        }

        ObjectReleased();
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::disposing( const EventObject& ) throw( RuntimeException )
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::dragDropEnd( const DragSourceDropEvent& rDSDE ) throw( RuntimeException )
{
    const SolarMutexGuard aGuard;

    try
    {
        DragFinished( rDSDE.DropSuccess ? ( rDSDE.DropAction & ~DNDConstants::ACTION_DEFAULT ) : DNDConstants::ACTION_NONE );
        ObjectReleased();
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::dragEnter( const DragSourceDragEvent& ) throw( RuntimeException )
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::dragExit( const DragSourceEvent& ) throw( RuntimeException )
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::dragOver( const DragSourceDragEvent& ) throw( RuntimeException )
{
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableHelper::dropActionChanged( const DragSourceDragEvent& ) throw( RuntimeException )
{
}

// -----------------------------------------------------------------------------

sal_Int64 SAL_CALL TransferableHelper::getSomething( const Sequence< sal_Int8 >& rId ) throw( RuntimeException )
{
    sal_Int64 nRet;

    if( ( rId.getLength() == 16 ) &&
        ( 0 == rtl_compareMemory( getUnoTunnelId().getConstArray(), rId.getConstArray(), 16 ) ) )
    {
        nRet = sal::static_int_cast<sal_Int64>(reinterpret_cast<sal_IntPtr>(this));
    }
    else
        nRet = 0;

    return nRet;
}

// -----------------------------------------------------------------------------

void TransferableHelper::ImplFlush()
{
    if( mxClipboard.is() )
    {
        Reference< XFlushableClipboard >    xFlushableClipboard( mxClipboard, UNO_QUERY );
        const sal_uInt32                    nRef = Application::ReleaseSolarMutex();

        try
        {
            if( xFlushableClipboard.is() )
                 xFlushableClipboard->flushClipboard();
        }
        catch( const ::com::sun::star::uno::Exception& )
        {
            OSL_FAIL( "Could not flush clipboard" );
        }

        Application::AcquireSolarMutex( nRef );
    }
}

// -----------------------------------------------------------------------------

void TransferableHelper::AddFormat( SotFormatStringId nFormat )
{
    DataFlavor aFlavor;

    if( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) )
        AddFormat( aFlavor );
}

// -----------------------------------------------------------------------------

void TransferableHelper::AddFormat( const DataFlavor& rFlavor )
{
    DataFlavorExVector::iterator    aIter( mpFormats->begin() ), aEnd( mpFormats->end() );
    sal_Bool                        bAdd = sal_True;

    while( aIter != aEnd )
    {
        if( TransferableDataHelper::IsEqual( *aIter, rFlavor ) )
        {
            // update MimeType for SOT_FORMATSTR_ID_OBJECTDESCRIPTOR in every case
            if( ( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR == aIter->mnSotId ) && mpObjDesc )
            {
                DataFlavor aObjDescFlavor;

                SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR, aObjDescFlavor );
                aIter->MimeType = aObjDescFlavor.MimeType;
                aIter->MimeType += ::ImplGetParameterString( *mpObjDesc );

#ifdef DEBUG
                fprintf( stderr, "TransferableHelper exchanged objectdescriptor [ %s ]\n",
                         ByteString( String( aIter->MimeType), RTL_TEXTENCODING_ASCII_US ).GetBuffer() );
#endif
            }

            aIter = aEnd;
            bAdd = sal_False;
        }
        else
            aIter++;
    }

    if( bAdd )
    {
        DataFlavorEx   aFlavorEx;
        DataFlavor     aObjDescFlavor;

        aFlavorEx.MimeType = rFlavor.MimeType;
        aFlavorEx.HumanPresentableName = rFlavor.HumanPresentableName;
        aFlavorEx.DataType = rFlavor.DataType;
        aFlavorEx.mnSotId = SotExchange::RegisterFormat( rFlavor );

        if( ( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR == aFlavorEx.mnSotId ) && mpObjDesc )
            aFlavorEx.MimeType += ::ImplGetParameterString( *mpObjDesc );

        mpFormats->push_back( aFlavorEx );

        if( FORMAT_BITMAP == aFlavorEx.mnSotId )
        {
            AddFormat( SOT_FORMATSTR_ID_BMP );
        }
        else if( FORMAT_GDIMETAFILE == aFlavorEx.mnSotId )
        {
            AddFormat( SOT_FORMATSTR_ID_EMF );
            AddFormat( SOT_FORMATSTR_ID_WMF );
        }
    }
}

// -----------------------------------------------------------------------------

void TransferableHelper::RemoveFormat( SotFormatStringId nFormat )
{
    DataFlavor aFlavor;

    if( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) )
        RemoveFormat( aFlavor );
}

// -----------------------------------------------------------------------------

void TransferableHelper::RemoveFormat( const DataFlavor& rFlavor )
{
    DataFlavorExVector::iterator aIter( mpFormats->begin() ), aEnd( mpFormats->end() );

    while( aIter != aEnd )
    {
        if( TransferableDataHelper::IsEqual( *aIter, rFlavor ) )
        {
            aIter = mpFormats->erase( aIter );
            aEnd = mpFormats->end();
        }
        else
            ++aIter;
    }
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::HasFormat( SotFormatStringId nFormat )
{
    DataFlavorExVector::iterator    aIter( mpFormats->begin() ), aEnd( mpFormats->end() );
    sal_Bool                        bRet = sal_False;

    while( aIter != aEnd )
    {
        if( nFormat == (*aIter).mnSotId )
        {
            aIter = aEnd;
            bRet = sal_True;
        }
        else
            ++aIter;
    }

    return bRet;
}

// -----------------------------------------------------------------------------

void TransferableHelper::ClearFormats()
{
    mpFormats->clear();
    maAny.clear();
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetAny( const Any& rAny, const DataFlavor& )
{
    maAny = rAny;
    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetString( const ::rtl::OUString& rString, const DataFlavor& rFlavor )
{
    DataFlavor aFileFlavor;

    if( rString.getLength() &&
        SotExchange::GetFormatDataFlavor( FORMAT_FILE, aFileFlavor ) &&
        TransferableDataHelper::IsEqual( aFileFlavor, rFlavor ) )
    {
        const String            aString( rString );
        const ByteString        aByteStr( aString, gsl_getSystemTextEncoding() );
        Sequence< sal_Int8 >    aSeq( aByteStr.Len() + 1 );

        rtl_copyMemory( aSeq.getArray(), aByteStr.GetBuffer(), aByteStr.Len() );
        aSeq[ aByteStr.Len() ] = 0;
        maAny <<= aSeq;
    }
    else
        maAny <<= rString;

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetBitmap( const Bitmap& rBitmap, const DataFlavor& )
{
    if( !rBitmap.IsEmpty() )
    {
        SvMemoryStream aMemStm( 65535, 65535 );

        aMemStm << rBitmap;
        maAny <<= Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );
    }

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetGDIMetaFile( const GDIMetaFile& rMtf, const DataFlavor& )
{
    if( rMtf.GetActionSize() )
    {
        SvMemoryStream aMemStm( 65535, 65535 );

        ( (GDIMetaFile&) rMtf ).Write( aMemStm );
        maAny <<= Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );
    }

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetGraphic( const Graphic& rGraphic, const DataFlavor& )
{
    if( rGraphic.GetType() != GRAPHIC_NONE )
    {
        SvMemoryStream aMemStm( 65535, 65535 );

        aMemStm.SetVersion( SOFFICE_FILEFORMAT_50 );
        aMemStm.SetCompressMode( COMPRESSMODE_NATIVE );
        aMemStm << rGraphic;
        maAny <<= Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );
    }

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetImageMap( const ImageMap& rIMap, const ::com::sun::star::datatransfer::DataFlavor& )
{
    SvMemoryStream aMemStm( 8192, 8192 );

    aMemStm.SetVersion( SOFFICE_FILEFORMAT_50 );
    rIMap.Write( aMemStm, String() );
    maAny <<= Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetTransferableObjectDescriptor( const TransferableObjectDescriptor& rDesc,
                                                              const ::com::sun::star::datatransfer::DataFlavor& )
{
    PrepareOLE( rDesc );

    SvMemoryStream aMemStm( 1024, 1024 );

    aMemStm << rDesc;
    maAny <<= Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Tell() );

    return( maAny.hasValue() );
 }

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetINetBookmark( const INetBookmark& rBmk,
                                              const ::com::sun::star::datatransfer::DataFlavor& rFlavor )
{
    rtl_TextEncoding eSysCSet = gsl_getSystemTextEncoding();

    switch( SotExchange::GetFormat( rFlavor ) )
    {
        case( SOT_FORMATSTR_ID_SOLK ):
        {
            ByteString sURL( rBmk.GetURL(), eSysCSet ),
                       sDesc( rBmk.GetDescription(), eSysCSet );
            ByteString sOut( ByteString::CreateFromInt32( sURL.Len() ));
            ( sOut += '@' ) += sURL;
            sOut += ByteString::CreateFromInt32( sDesc.Len() );
            ( sOut += '@' ) += sDesc;

            Sequence< sal_Int8 > aSeq( sOut.Len() );
            memcpy( aSeq.getArray(), sOut.GetBuffer(), sOut.Len() );
            maAny <<= aSeq;
        }
        break;

        case( FORMAT_STRING ):
            maAny <<= ::rtl::OUString( rBmk.GetURL() );
            break;

        case( SOT_FORMATSTR_ID_UNIFORMRESOURCELOCATOR ):
        {
            ByteString sURL( rBmk.GetURL(), eSysCSet );
            Sequence< sal_Int8 > aSeq( sURL.Len() );
            memcpy( aSeq.getArray(), sURL.GetBuffer(), sURL.Len() );
            maAny <<= aSeq;
        }
        break;

        case( SOT_FORMATSTR_ID_NETSCAPE_BOOKMARK ):
        {
            Sequence< sal_Int8 > aSeq( 2048 );

            memset( aSeq.getArray(), 0, 2048 );
            strcpy( reinterpret_cast< char* >( aSeq.getArray() ), ByteString( rBmk.GetURL(), eSysCSet).GetBuffer() );
            strcpy( reinterpret_cast< char* >( aSeq.getArray() ) + 1024, ByteString( rBmk.GetDescription(), eSysCSet ).GetBuffer() );

            maAny <<= aSeq;
        }
        break;

#ifdef WNT
        case SOT_FORMATSTR_ID_FILEGRPDESCRIPTOR:
        {
            Sequence< sal_Int8 >    aSeq( sizeof( FILEGROUPDESCRIPTOR ) );
            FILEGROUPDESCRIPTOR*    pFDesc = (FILEGROUPDESCRIPTOR*) aSeq.getArray();
            FILEDESCRIPTOR&         rFDesc1 = pFDesc->fgd[ 0 ];

            pFDesc->cItems = 1;
            memset( &rFDesc1, 0, sizeof( FILEDESCRIPTOR ) );
            rFDesc1.dwFlags = FD_LINKUI;

            ByteString aStr( rBmk.GetDescription(), eSysCSet );
            for( sal_uInt16 nChar = 0; nChar < aStr.Len(); ++nChar )
                if( strchr( "\\/:*?\"<>|", aStr.GetChar( nChar ) ) )
                    aStr.Erase( nChar--, 1 );

            aStr.Insert( "Shortcut to ", 0 );
            aStr += ".URL";
            strcpy( rFDesc1.cFileName, aStr.GetBuffer() );

            maAny <<= aSeq;
        }
        break;

        case SOT_FORMATSTR_ID_FILECONTENT:
        {
            String aStr( RTL_CONSTASCII_USTRINGPARAM( "[InternetShortcut]\x0aURL=" ) );
            maAny <<= ::rtl::OUString( aStr += rBmk.GetURL() );
        }
        break;
#endif

        default:
        break;
    }

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetINetImage( const INetImage& rINtImg,
                                           const ::com::sun::star::datatransfer::DataFlavor& rFlavor )
{
    SvMemoryStream aMemStm( 1024, 1024 );

    aMemStm.SetVersion( SOFFICE_FILEFORMAT_50 );
    rINtImg.Write( aMemStm, SotExchange::GetFormat( rFlavor ) );

    maAny <<= Sequence< sal_Int8 >( reinterpret_cast< const sal_Int8* >( aMemStm.GetData() ), aMemStm.Seek( STREAM_SEEK_TO_END ) );

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetFileList( const FileList& rFileList,
                                          const ::com::sun::star::datatransfer::DataFlavor& )
{
    SvMemoryStream aMemStm( 4096, 4096 );

    aMemStm.SetVersion( SOFFICE_FILEFORMAT_50 );
    aMemStm << rFileList;

    maAny <<= Sequence< sal_Int8 >( static_cast< const sal_Int8* >( aMemStm.GetData() ),
                                       aMemStm.Seek( STREAM_SEEK_TO_END ) );

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetObject( void* pUserObject, sal_uInt32 nUserObjectId, const DataFlavor& rFlavor )
{
    SotStorageStreamRef xStm( new SotStorageStream( String() ) );

    xStm->SetVersion( SOFFICE_FILEFORMAT_50 );

    if( pUserObject && WriteObject( xStm, pUserObject, nUserObjectId, rFlavor ) )
    {
        const sal_uInt32        nLen = xStm->Seek( STREAM_SEEK_TO_END );
        Sequence< sal_Int8 >    aSeq( nLen );

        xStm->Seek( STREAM_SEEK_TO_BEGIN );
        xStm->Read( aSeq.getArray(),  nLen );

        if( nLen && ( SotExchange::GetFormat( rFlavor ) == SOT_FORMAT_STRING ) )
        {
            //JP 24.7.2001: as I know was this only for the writer application and this
            //              writes now UTF16 format into the stream
            //JP 6.8.2001:  and now it writes UTF8 because then exist no problem with
            //              little / big endians! - Bug 88121
            maAny <<= ::rtl::OUString( reinterpret_cast< const sal_Char* >( aSeq.getConstArray() ), nLen - 1, RTL_TEXTENCODING_UTF8 );
        }
        else
            maAny <<= aSeq;
    }

    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::SetInterface( const ::com::sun::star::uno::Reference< ::com::sun::star::uno::XInterface >& rIf,
                                           const ::com::sun::star::datatransfer::DataFlavor& )
{
    maAny <<= rIf;
    return( maAny.hasValue() );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableHelper::WriteObject( SotStorageStreamRef&, void*, sal_uInt32, const DataFlavor& )
{
    OSL_FAIL( "TransferableHelper::WriteObject( ... ) not implemented" );
    return sal_False;
}

// -----------------------------------------------------------------------------

void TransferableHelper::DragFinished( sal_Int8 )
{
}

// -----------------------------------------------------------------------------

void TransferableHelper::ObjectReleased()
{
}

// -----------------------------------------------------------------------------

void TransferableHelper::PrepareOLE( const TransferableObjectDescriptor& rObjDesc )
{
    delete mpObjDesc;
    mpObjDesc = new TransferableObjectDescriptor( rObjDesc );

    if( HasFormat( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR ) )
        AddFormat( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR );
}

// -----------------------------------------------------------------------------

void TransferableHelper::CopyToClipboard( Window *pWindow ) const
{
    DBG_ASSERT( pWindow, "Window pointer is NULL" );
    Reference< XClipboard > xClipboard;

    if( pWindow )
        xClipboard = pWindow->GetClipboard();

    if( xClipboard.is() )
        mxClipboard = xClipboard;

    if( mxClipboard.is() && !mxTerminateListener.is() )
    {
        const sal_uInt32 nRef = Application::ReleaseSolarMutex();

        try
        {
            TransferableHelper*                 pThis = const_cast< TransferableHelper* >( this );
            Reference< XMultiServiceFactory >   xFact( ::comphelper::getProcessServiceFactory() );

            if( xFact.is() )
            {
                Reference< XDesktop > xDesktop( xFact->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.frame.Desktop" )) ), UNO_QUERY );

                if( xDesktop.is() )
                    xDesktop->addTerminateListener( pThis->mxTerminateListener = new TerminateListener( *pThis ) );
            }

            mxClipboard->setContents( pThis, pThis );
        }
        catch( const ::com::sun::star::uno::Exception& )
        {
        }

        Application::AcquireSolarMutex( nRef );
    }
}

// -----------------------------------------------------------------------------

void TransferableHelper::CopyToSelection( Window *pWindow ) const
{
    DBG_ASSERT( pWindow, "Window pointer is NULL" );
    Reference< XClipboard > xSelection;

    if( pWindow )
        xSelection = pWindow->GetPrimarySelection();

    if( xSelection.is() && !mxTerminateListener.is() )
    {
        const sal_uInt32 nRef = Application::ReleaseSolarMutex();

        try
        {
            TransferableHelper*                 pThis = const_cast< TransferableHelper* >( this );
            Reference< XMultiServiceFactory >   xFact( ::comphelper::getProcessServiceFactory() );

            if( xFact.is() )
            {
                Reference< XDesktop > xDesktop( xFact->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.frame.Desktop" )) ), UNO_QUERY );

                if( xDesktop.is() )
                    xDesktop->addTerminateListener( pThis->mxTerminateListener = new TerminateListener( *pThis ) );
            }

            xSelection->setContents( pThis, pThis );
        }
        catch( const ::com::sun::star::uno::Exception& )
        {
        }

        Application::AcquireSolarMutex( nRef );
    }
}

// -----------------------------------------------------------------------------

void TransferableHelper::StartDrag( Window* pWindow, sal_Int8 nDnDSourceActions,
                                    sal_Int32 nDnDPointer, sal_Int32 nDnDImage )

{
    DBG_ASSERT( pWindow, "Window pointer is NULL" );
    Reference< XDragSource > xDragSource( pWindow->GetDragSource() );

    if( xDragSource.is() )
    {
        /*
         *    #96792# release mouse before actually starting DnD.
         *    This is necessary for the X11 DnD implementation to work.
         */
        if( pWindow->IsMouseCaptured() )
            pWindow->ReleaseMouse();

        const Point aPt( pWindow->GetPointerPosPixel() );

        // On Mac OS X we are forced to execute 'startDrag' synchronously
        // contrary to the XDragSource interface specification because
        // we can receive drag events from the system only in the main
        // thread
#if !defined(QUARTZ)
        const sal_uInt32 nRef = Application::ReleaseSolarMutex();
#endif

        try
        {
            DragGestureEvent    aEvt;
            aEvt.DragAction = DNDConstants::ACTION_COPY;
            aEvt.DragOriginX = aPt.X();
            aEvt.DragOriginY = aPt.Y();
            aEvt.DragSource = xDragSource;

            xDragSource->startDrag( aEvt, nDnDSourceActions, nDnDPointer, nDnDImage, this, this );
        }
        catch( const ::com::sun::star::uno::Exception& )
        {
        }

        // See above for the reason of this define
#if !defined(QUARTZ)
        Application::AcquireSolarMutex( nRef );
#endif
    }
}

// -----------------------------------------------------------------------------

void TransferableHelper::ClearSelection( Window *pWindow )
{
    DBG_ASSERT( pWindow, "Window pointer is NULL" );
    Reference< XClipboard > xSelection( pWindow->GetPrimarySelection() );

    if( xSelection.is() )
        xSelection->setContents( NULL, NULL );
}

// -----------------------------------------------------------------------------

Reference< XClipboard> TransferableHelper::GetSystemClipboard()
{
    Window *pFocusWindow = Application::GetFocusWindow();

    if( pFocusWindow )
        return pFocusWindow->GetClipboard();

    return  Reference< XClipboard > ();
}

// -----------------------------------------------------------------------------

const Sequence< sal_Int8 >& TransferableHelper::getUnoTunnelId()
{
    static Sequence< sal_Int8 > aSeq;

    if( !aSeq.getLength() )
    {
        static osl::Mutex           aCreateMutex;
        osl::Guard< osl::Mutex >    aGuard( aCreateMutex );

        aSeq.realloc( 16 );
        rtl_createUuid( reinterpret_cast< sal_uInt8* >( aSeq.getArray() ), 0, sal_True );
    }


    return aSeq;
}

// ---------------------------------
// - TransferableClipboardNotifier -
// ---------------------------------

class TransferableClipboardNotifier : public ::cppu::WeakImplHelper1< XClipboardListener >
{
private:
    ::osl::Mutex&                   mrMutex;
    Reference< XClipboardNotifier > mxNotifier;
    TransferableDataHelper*         mpListener;

protected:
    // XClipboardListener
    virtual void SAL_CALL changedContents( const clipboard::ClipboardEvent& event ) throw (RuntimeException);

    // XEventListener
    virtual void SAL_CALL disposing( const EventObject& Source ) throw (RuntimeException);

public:
    TransferableClipboardNotifier( const Reference< XClipboard >& _rxClipboard, TransferableDataHelper& _rListener, ::osl::Mutex& _rMutex );

    /// determines whether we're currently listening
    inline bool isListening() const { return !isDisposed(); }

    /// determines whether the instance is disposed
    inline bool isDisposed() const { return mpListener == NULL; }

    /// makes the instance non-functional
    void    dispose();
};

// -----------------------------------------------------------------------------

TransferableClipboardNotifier::TransferableClipboardNotifier( const Reference< XClipboard >& _rxClipboard, TransferableDataHelper& _rListener, ::osl::Mutex& _rMutex )
    :mrMutex( _rMutex )
    ,mxNotifier( _rxClipboard, UNO_QUERY )
    ,mpListener( &_rListener )
{
    osl_incrementInterlockedCount( &m_refCount );
    {
        if ( mxNotifier.is() )
            mxNotifier->addClipboardListener( this );
        else
            // born dead
            mpListener = NULL;
    }
    osl_decrementInterlockedCount( &m_refCount );
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableClipboardNotifier::changedContents( const clipboard::ClipboardEvent& event ) throw (RuntimeException)
{
    SolarMutexGuard aSolarGuard;
        // the SolarMutex here is necessary, since
        // - we cannot call mpListener without our own mutex locked
        // - Rebind respectively InitFormats (called by Rebind) will
        // try to lock the SolarMutex, too
    ::osl::MutexGuard aGuard( mrMutex );
    if( mpListener )
        mpListener->Rebind( event.Contents );
}

// -----------------------------------------------------------------------------

void SAL_CALL TransferableClipboardNotifier::disposing( const EventObject& ) throw (RuntimeException)
{
    // clipboard is being disposed. Hmm. Okay, become disfunctional myself.
    dispose();
}

// -----------------------------------------------------------------------------

void TransferableClipboardNotifier::dispose()
{
    ::osl::MutexGuard aGuard( mrMutex );

    Reference< XClipboardListener > xKeepMeAlive( this );

    if ( mxNotifier.is() )
        mxNotifier->removeClipboardListener( this );
    mxNotifier.clear();

    mpListener = NULL;
}

// -------------------------------
// - TransferableDataHelper_Impl -
// -------------------------------

struct TransferableDataHelper_Impl
{
    ::osl::Mutex                    maMutex;
    TransferableClipboardNotifier*  mpClipboardListener;

    TransferableDataHelper_Impl()
        :mpClipboardListener( NULL )
    {
    }
};

// --------------------------
// - TransferableDataHelper -
// --------------------------

TransferableDataHelper::TransferableDataHelper() :
    mpFormats( new DataFlavorExVector ),
    mpObjDesc( new TransferableObjectDescriptor ),
    mpImpl( new TransferableDataHelper_Impl )
{
}

// -----------------------------------------------------------------------------

TransferableDataHelper::TransferableDataHelper( const Reference< ::com::sun::star::datatransfer::XTransferable >& rxTransferable ) :
    mxTransfer( rxTransferable ),
    mpFormats( new DataFlavorExVector ),
    mpObjDesc( new TransferableObjectDescriptor ),
    mpImpl( new TransferableDataHelper_Impl )
{
    InitFormats();
}

// -----------------------------------------------------------------------------

TransferableDataHelper::TransferableDataHelper( const TransferableDataHelper& rDataHelper ) :
    mxTransfer( rDataHelper.mxTransfer ),
    mxClipboard( rDataHelper.mxClipboard ),
    mpFormats( new DataFlavorExVector( *rDataHelper.mpFormats ) ),
    mpObjDesc( new TransferableObjectDescriptor( *rDataHelper.mpObjDesc ) ),
    mpImpl( new TransferableDataHelper_Impl )
{
}

// -----------------------------------------------------------------------------

TransferableDataHelper& TransferableDataHelper::operator=( const TransferableDataHelper& rDataHelper )
{
    if ( this != &rDataHelper )
    {
        ::osl::MutexGuard aGuard( mpImpl->maMutex );

        bool bWasClipboardListening = ( NULL != mpImpl->mpClipboardListener );

        if ( bWasClipboardListening )
            StopClipboardListening();

        mxTransfer = rDataHelper.mxTransfer;
        delete mpFormats, mpFormats = new DataFlavorExVector( *rDataHelper.mpFormats );
        delete mpObjDesc, mpObjDesc = new TransferableObjectDescriptor( *rDataHelper.mpObjDesc );
        mxClipboard = rDataHelper.mxClipboard;

        if ( bWasClipboardListening )
            StartClipboardListening();
    }

    return *this;
}

// -----------------------------------------------------------------------------

TransferableDataHelper::~TransferableDataHelper()
{
    StopClipboardListening( );
    {
        ::osl::MutexGuard aGuard( mpImpl->maMutex );
        delete mpFormats, mpFormats = NULL;
        delete mpObjDesc, mpObjDesc = NULL;
    }
    delete mpImpl;
}

// -----------------------------------------------------------------------------

void TransferableDataHelper::FillDataFlavorExVector( const Sequence< DataFlavor >& rDataFlavorSeq,
                                                     DataFlavorExVector& rDataFlavorExVector )
{
    try
    {
        Reference< XMultiServiceFactory >       xFact( ::comphelper::getProcessServiceFactory() );
        Reference< XMimeContentTypeFactory >    xMimeFact;
        DataFlavorEx                            aFlavorEx;
        const ::rtl::OUString                   aCharsetStr(RTL_CONSTASCII_USTRINGPARAM( "charset" ));

        if( xFact.is() )
            xMimeFact = Reference< XMimeContentTypeFactory >( xFact->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.datatransfer.MimeContentTypeFactory" )) ),
                                                              UNO_QUERY );

        for( sal_Int32 i = 0; i < rDataFlavorSeq.getLength(); i++ )
        {
            const DataFlavor&               rFlavor = rDataFlavorSeq[ i ];
            Reference< XMimeContentType >   xMimeType;

            try
            {
                if( xMimeFact.is() && rFlavor.MimeType.getLength() )
                    xMimeType = xMimeFact->createMimeContentType( rFlavor.MimeType );
            }
            catch( const ::com::sun::star::uno::Exception& )
            {

            }

            aFlavorEx.MimeType = rFlavor.MimeType;
            aFlavorEx.HumanPresentableName = rFlavor.HumanPresentableName;
            aFlavorEx.DataType = rFlavor.DataType;
            aFlavorEx.mnSotId = SotExchange::RegisterFormat( rFlavor );

            rDataFlavorExVector.push_back( aFlavorEx );

            // add additional formats for special mime types
            if( SOT_FORMATSTR_ID_BMP == aFlavorEx.mnSotId )
            {
                if( SotExchange::GetFormatDataFlavor( SOT_FORMAT_BITMAP, aFlavorEx ) )
                {
                    aFlavorEx.mnSotId = SOT_FORMAT_BITMAP;
                    rDataFlavorExVector.push_back( aFlavorEx );
                }
            }
            else if( SOT_FORMATSTR_ID_WMF == aFlavorEx.mnSotId || SOT_FORMATSTR_ID_EMF == aFlavorEx.mnSotId )
            {
                if( SotExchange::GetFormatDataFlavor( SOT_FORMAT_GDIMETAFILE, aFlavorEx ) )
                {
                    aFlavorEx.mnSotId = SOT_FORMAT_GDIMETAFILE;
                    rDataFlavorExVector.push_back( aFlavorEx );
                }
            }
            else if ( SOT_FORMATSTR_ID_HTML_SIMPLE == aFlavorEx.mnSotId  )
            {
                // #104735# HTML_SIMPLE may also be inserted without comments
                aFlavorEx.mnSotId = SOT_FORMATSTR_ID_HTML_NO_COMMENT;
                rDataFlavorExVector.push_back( aFlavorEx );
            }
            else if( xMimeType.is() && xMimeType->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text/plain" )) ) )
            {
                // add, if it is a UTF-8 byte buffer
                if( xMimeType->hasParameter( aCharsetStr ) )
                {
                    const ::rtl::OUString aCharset( xMimeType->getParameterValue( aCharsetStr ) );

                    if( xMimeType->getParameterValue( aCharsetStr ).equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "unicode" )) ) ||
                        xMimeType->getParameterValue( aCharsetStr ).equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "utf-16" )) ) )
                    {
                        rDataFlavorExVector[ rDataFlavorExVector.size() - 1 ].mnSotId = FORMAT_STRING;

                    }
                }
            }
            else if( xMimeType.is() && xMimeType->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text/rtf" )) ) )
            {
                rDataFlavorExVector[ rDataFlavorExVector.size() - 1 ].mnSotId = FORMAT_RTF;
            }
            else if( xMimeType.is() && xMimeType->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text/html" )) ) )

            {
                rDataFlavorExVector[ rDataFlavorExVector.size() - 1 ].mnSotId = SOT_FORMATSTR_ID_HTML;
            }
            else if( xMimeType.is() && xMimeType->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text/uri-list" )) ) )
            {
                rDataFlavorExVector[ rDataFlavorExVector.size() - 1 ].mnSotId = SOT_FORMAT_FILE_LIST;
            }
            else if( xMimeType.is() && xMimeType->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "application/x-openoffice-objectdescriptor-xml" )) ) )
            {
                rDataFlavorExVector[ rDataFlavorExVector.size() - 1 ].mnSotId = SOT_FORMATSTR_ID_OBJECTDESCRIPTOR;
            }
        }
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }
}

// -----------------------------------------------------------------------------

void TransferableDataHelper::InitFormats()
{
    SolarMutexGuard aSolarGuard;
    ::osl::MutexGuard aGuard( mpImpl->maMutex );

    mpFormats->clear();
    delete mpObjDesc, mpObjDesc = new TransferableObjectDescriptor;

    if( mxTransfer.is() )
    {
        TransferableDataHelper::FillDataFlavorExVector( mxTransfer->getTransferDataFlavors(), *mpFormats );

        DataFlavorExVector::iterator aIter( mpFormats->begin() ), aEnd( mpFormats->end() );

        while( aIter != aEnd )
        {
            if( SOT_FORMATSTR_ID_OBJECTDESCRIPTOR == aIter->mnSotId )
            {
                ImplSetParameterString( *mpObjDesc, *aIter );
                aIter = aEnd;
            }
            else
                ++aIter;
        }
    }
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::HasFormat( SotFormatStringId nFormat ) const
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );

    DataFlavorExVector::iterator    aIter( mpFormats->begin() ), aEnd( mpFormats->end() );
    sal_Bool                        bRet = sal_False;

    while( aIter != aEnd )
    {
        if( nFormat == (*aIter++).mnSotId )
        {
            aIter = aEnd;
            bRet = sal_True;
        }
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::HasFormat( const DataFlavor& rFlavor ) const
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );

    DataFlavorExVector::iterator    aIter( mpFormats->begin() ), aEnd( mpFormats->end() );
    sal_Bool                        bRet = sal_False;

    while( aIter != aEnd )
    {
        if( TransferableDataHelper::IsEqual( rFlavor, *aIter++ ) )
        {
            aIter = aEnd;
            bRet = sal_True;
        }
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_uInt32 TransferableDataHelper::GetFormatCount() const
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );
    return mpFormats->size();
}

// -----------------------------------------------------------------------------


SotFormatStringId TransferableDataHelper::GetFormat( sal_uInt32 nFormat ) const
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );
    DBG_ASSERT( nFormat < mpFormats->size(), "TransferableDataHelper::GetFormat: invalid format index" );
    return( ( nFormat < mpFormats->size() ) ? (*mpFormats)[ nFormat ].mnSotId : 0 );
}

// -----------------------------------------------------------------------------

DataFlavor TransferableDataHelper::GetFormatDataFlavor( sal_uInt32 nFormat ) const
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );
    DBG_ASSERT( nFormat < mpFormats->size(), "TransferableDataHelper::GetFormat: invalid format index" );

    DataFlavor aRet;

    if( nFormat < mpFormats->size() )
        aRet = (*mpFormats)[ nFormat ];

    return aRet;
}

// -----------------------------------------------------------------------------

Reference< XTransferable > TransferableDataHelper::GetXTransferable() const
{
    Reference< XTransferable > xRet;

    if( mxTransfer.is() )
    {
        try
        {
            xRet = mxTransfer;

            // do a dummy call to check, if this interface is valid (nasty)
            Sequence< DataFlavor > aTestSeq( xRet->getTransferDataFlavors() );

        }
        catch( const ::com::sun::star::uno::Exception& )
        {
            xRet = Reference< XTransferable >();
        }
    }

    return xRet;
}

// -----------------------------------------------------------------------------

Any TransferableDataHelper::GetAny( SotFormatStringId nFormat ) const
{
    Any aReturn;

    DataFlavor aFlavor;
    if ( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) )
        aReturn = GetAny( aFlavor );

    return aReturn;
}


// -----------------------------------------------------------------------------

Any TransferableDataHelper::GetAny( const DataFlavor& rFlavor ) const
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );
    Any aRet;

    try
    {
        if( mxTransfer.is() )
        {
            DataFlavorExVector::iterator    aIter( mpFormats->begin() ), aEnd( mpFormats->end() );
            const SotFormatStringId         nRequestFormat = SotExchange::GetFormat( rFlavor );

            if( nRequestFormat )
            {
                // try to get alien format first
                while( aIter != aEnd )
                {
                    if( ( nRequestFormat == (*aIter).mnSotId ) && !rFlavor.MimeType.equalsIgnoreAsciiCase( (*aIter).MimeType ) )
                        aRet = mxTransfer->getTransferData( *aIter );

                    if( aRet.hasValue() )
                        aIter = aEnd;
                    else
                        aIter++;
                }
            }

            if( !aRet.hasValue() )
                aRet = mxTransfer->getTransferData( rFlavor );
        }
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
    }

    return aRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetString( SotFormatStringId nFormat, String& rStr )
{
    ::rtl::OUString aOUString;
    sal_Bool        bRet = GetString( nFormat, aOUString );

    rStr = aOUString;

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetString( const DataFlavor& rFlavor, String& rStr )
{
    ::rtl::OUString aOUString;
    sal_Bool        bRet = GetString( rFlavor, aOUString );

    rStr = aOUString;

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetString( SotFormatStringId nFormat, ::rtl::OUString& rStr )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetString( aFlavor, rStr ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetString( const DataFlavor& rFlavor, ::rtl::OUString& rStr )
{
    Any         aAny( GetAny( rFlavor ) );
    sal_Bool    bRet = sal_False;

    if( aAny.hasValue() )
    {
        ::rtl::OUString         aOUString;
        Sequence< sal_Int8 >    aSeq;

        if( aAny >>= aOUString )
        {
            rStr = aOUString;
            bRet = sal_True;
        }
        else if( aAny >>= aSeq )
        {

            const sal_Char* pChars = reinterpret_cast< const sal_Char* >( aSeq.getConstArray() );
            sal_Int32       nLen = aSeq.getLength();

            //JP 10.10.2001: 92930 - don't copy the last zero characterinto the string.
            //DVO 2002-05-27: strip _all_ trailing zeros
            while( nLen && ( 0 == *( pChars + nLen - 1 ) ) )
                --nLen;

            rStr = ::rtl::OUString( pChars, nLen, gsl_getSystemTextEncoding() );
            bRet = sal_True;
        }
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetBitmap( SotFormatStringId nFormat, Bitmap& rBmp )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetBitmap( aFlavor, rBmp ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetBitmap( const DataFlavor& rFlavor, Bitmap& rBmp )
{
    SotStorageStreamRef xStm;
    DataFlavor          aSubstFlavor;
    sal_Bool            bRet = GetSotStorageStream( rFlavor, xStm );

    if( bRet )
    {
        *xStm >> rBmp;
        bRet = ( xStm->GetError() == ERRCODE_NONE );

        /* SJ: #110748# At the moment we are having problems with DDB inserted as DIB. The
           problem is, that some graphics are inserted much too big because the nXPelsPerMeter
           and nYPelsPerMeter of the bitmap fileheader isn't including the correct value.
           Due to this reason the following code assumes that bitmaps with a logical size
           greater than 50 cm aren't having the correct mapmode set.

           The following code should be removed if DDBs and DIBs are supported via clipboard
           properly.
        */
        if ( bRet )
        {
            MapMode aMapMode = rBmp.GetPrefMapMode();
            if ( aMapMode.GetMapUnit() != MAP_PIXEL )
            {
                Size aSize = OutputDevice::LogicToLogic( rBmp.GetPrefSize(), aMapMode, MAP_100TH_MM );
                if ( ( aSize.Width() > 5000 ) || ( aSize.Height() > 5000 ) )
                    rBmp.SetPrefMapMode( MAP_PIXEL );
            }
        }
    }

    if( !bRet &&
        HasFormat( SOT_FORMATSTR_ID_BMP ) &&
        SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_BMP, aSubstFlavor ) &&
        GetSotStorageStream( aSubstFlavor, xStm ) )
    {
        xStm->ResetError();
        *xStm >> rBmp;
        bRet = ( xStm->GetError() == ERRCODE_NONE );
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetGDIMetaFile( SotFormatStringId nFormat, GDIMetaFile& rMtf )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetGDIMetaFile( aFlavor, rMtf ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetGDIMetaFile( const DataFlavor& rFlavor, GDIMetaFile& rMtf )
{
    SotStorageStreamRef xStm;
    DataFlavor          aSubstFlavor;
    sal_Bool            bRet = sal_False;

    if( GetSotStorageStream( rFlavor, xStm ) )
    {
        *xStm >> rMtf;
        bRet = ( xStm->GetError() == ERRCODE_NONE );
    }

    if( !bRet &&
        HasFormat( SOT_FORMATSTR_ID_EMF ) &&
        SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_EMF, aSubstFlavor ) &&
        GetSotStorageStream( aSubstFlavor, xStm ) )
    {
        Graphic aGraphic;

        if( GraphicConverter::Import( *xStm, aGraphic ) == ERRCODE_NONE )
        {
            rMtf = aGraphic.GetGDIMetaFile();
            bRet = sal_True;
        }
    }

    if( !bRet &&
        HasFormat( SOT_FORMATSTR_ID_WMF ) &&
        SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_WMF, aSubstFlavor ) &&
        GetSotStorageStream( aSubstFlavor, xStm ) )
    {
        Graphic aGraphic;

        if( GraphicConverter::Import( *xStm, aGraphic ) == ERRCODE_NONE )
        {
            rMtf = aGraphic.GetGDIMetaFile();
            bRet = sal_True;
        }
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetGraphic( SotFormatStringId nFormat, Graphic& rGraphic )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetGraphic( aFlavor, rGraphic ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetGraphic( const ::com::sun::star::datatransfer::DataFlavor& rFlavor, Graphic& rGraphic )
{
    DataFlavor  aFlavor;
    sal_Bool    bRet = sal_False;

    if( SotExchange::GetFormatDataFlavor( SOT_FORMAT_BITMAP, aFlavor ) &&
        TransferableDataHelper::IsEqual( aFlavor, rFlavor ) )
    {
        Bitmap aBmp;

        if( ( bRet = GetBitmap( aFlavor, aBmp ) ) == sal_True )
            rGraphic = aBmp;
    }
    else if( SotExchange::GetFormatDataFlavor( SOT_FORMAT_GDIMETAFILE, aFlavor ) &&
             TransferableDataHelper::IsEqual( aFlavor, rFlavor ) )
    {
        GDIMetaFile aMtf;

        if( ( bRet = GetGDIMetaFile( aFlavor, aMtf ) ) == sal_True )
            rGraphic = aMtf;
    }
    else
    {
        SotStorageStreamRef xStm;

        if( GetSotStorageStream( rFlavor, xStm ) )
        {
            *xStm >> rGraphic;
            bRet = ( xStm->GetError() == ERRCODE_NONE );
        }
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetImageMap( SotFormatStringId nFormat, ImageMap& rIMap )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetImageMap( aFlavor, rIMap ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetImageMap( const ::com::sun::star::datatransfer::DataFlavor& rFlavor, ImageMap& rIMap )
{
    SotStorageStreamRef xStm;
    sal_Bool            bRet = GetSotStorageStream( rFlavor, xStm );

    if( bRet )
    {
        rIMap.Read( *xStm, String() );
        bRet = ( xStm->GetError() == ERRCODE_NONE );
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetTransferableObjectDescriptor( SotFormatStringId nFormat, TransferableObjectDescriptor& rDesc )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetTransferableObjectDescriptor( aFlavor, rDesc ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetTransferableObjectDescriptor( const ::com::sun::star::datatransfer::DataFlavor&, TransferableObjectDescriptor& rDesc )
{
    rDesc = *mpObjDesc;
    return true;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetINetBookmark( SotFormatStringId nFormat, INetBookmark& rBmk )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetINetBookmark( aFlavor, rBmk ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetINetBookmark( const ::com::sun::star::datatransfer::DataFlavor& rFlavor, INetBookmark& rBmk )
{
    sal_Bool bRet = sal_False;
    if( HasFormat( rFlavor ))
    {
    const SotFormatStringId nFormat = SotExchange::GetFormat( rFlavor );
    switch( nFormat )
    {
        case( SOT_FORMATSTR_ID_SOLK ):
        case( SOT_FORMATSTR_ID_UNIFORMRESOURCELOCATOR ):
        {
            String aString;
            if( GetString( rFlavor, aString ) )
            {
                if( SOT_FORMATSTR_ID_UNIFORMRESOURCELOCATOR == nFormat )
                {
                    rBmk = INetBookmark( aString, aString );
                    bRet = sal_True;
                }
                else
                {
                    String      aURL, aDesc;
                    sal_uInt16  nStart = aString.Search( '@' ), nLen = (sal_uInt16) aString.ToInt32();

                    if( !nLen && aString.GetChar( 0 ) != '0' )
                    {
                        DBG_WARNING( "SOLK: 1. len=0" );
                    }
                    if( nStart == STRING_NOTFOUND || nLen > aString.Len() - nStart - 3 )
                    {
                        DBG_WARNING( "SOLK: 1. illegal start or wrong len" );
                    }
                    aURL = aString.Copy( nStart + 1, nLen );

                    aString.Erase( 0, nStart + 1 + nLen );
                    nStart = aString.Search( '@' );
                    nLen = (sal_uInt16) aString.ToInt32();

                    if( !nLen && aString.GetChar( 0 ) != '0' )
                    {
                        DBG_WARNING( "SOLK: 2. len=0" );
                    }
                    if( nStart == STRING_NOTFOUND || nLen > aString.Len() - nStart - 1 )
                    {
                        DBG_WARNING( "SOLK: 2. illegal start or wrong len" );
                    }
                    aDesc = aString.Copy( nStart+1, nLen );

                    rBmk = INetBookmark( aURL, aDesc );
                    bRet = sal_True;
                }
            }
        }
        break;

        case( SOT_FORMATSTR_ID_NETSCAPE_BOOKMARK ):
        {
            Sequence< sal_Int8 > aSeq;

            if( GetSequence( rFlavor, aSeq ) && ( 2048 == aSeq.getLength() ) )
            {
                rBmk = INetBookmark( String( reinterpret_cast< const sal_Char* >( aSeq.getConstArray() ), gsl_getSystemTextEncoding() ),
                                     String( reinterpret_cast< const sal_Char* >( aSeq.getConstArray() ) + 1024, gsl_getSystemTextEncoding() ) );
                bRet = sal_True;
            }
        }
        break;

#ifdef WNT
        case SOT_FORMATSTR_ID_FILEGRPDESCRIPTOR:
        {
            Sequence< sal_Int8 > aSeq;

            if( GetSequence( rFlavor, aSeq ) && aSeq.getLength() )
            {
                FILEGROUPDESCRIPTOR* pFDesc = (FILEGROUPDESCRIPTOR*) aSeq.getConstArray();

                if( pFDesc->cItems )
                {
                    ByteString          aDesc( pFDesc->fgd[ 0 ].cFileName );
                    rtl_TextEncoding    eTextEncoding = gsl_getSystemTextEncoding();

                    if( ( aDesc.Len() > 4 ) && aDesc.Copy( aDesc.Len() - 4 ).EqualsIgnoreCaseAscii( ".URL" ) )
                    {
                        SvStream* pStream = ::utl::UcbStreamHelper::CreateStream( INetURLObject( String( aDesc, eTextEncoding ) ).GetMainURL( INetURLObject::NO_DECODE ),
                                                                                  STREAM_STD_READ );

                        if( !pStream || pStream->GetError() )
                        {
                            DataFlavor aFileContentFlavor;

                            aSeq.realloc( 0 );
                            delete pStream;

                            if( SotExchange::GetFormatDataFlavor( SOT_FORMATSTR_ID_FILECONTENT, aFileContentFlavor ) &&
                                GetSequence( aFileContentFlavor, aSeq ) && aSeq.getLength() )
                            {
                                pStream = new SvMemoryStream( (sal_Char*) aSeq.getConstArray(), aSeq.getLength(), STREAM_STD_READ );
                            }
                            else
                                pStream = NULL;
                        }

                        if( pStream )
                        {
                            ByteString  aLine;
                            sal_Bool    bSttFnd = sal_False;

                            while( pStream->ReadLine( aLine ) )
                            {
                                if( aLine.EqualsIgnoreCaseAscii( "[InternetShortcut]" ) )
                                    bSttFnd = sal_True;
                                else if( bSttFnd && aLine.Copy( 0, 4 ).EqualsIgnoreCaseAscii( "URL=" ) )
                                {
                                    rBmk = INetBookmark( String( aLine.Erase( 0, 4 ), eTextEncoding ),
                                                         String( aDesc.Erase( aDesc.Len() - 4 ), eTextEncoding ) );
                                    bRet = sal_True;
                                    break;
                                }
                            }

                            delete pStream;
                        }
                    }
                }
            }
        }
        break;
#endif

    }
    }
    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetINetImage( SotFormatStringId nFormat,
                                                INetImage& rINtImg )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetINetImage( aFlavor, rINtImg ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetINetImage(
        const ::com::sun::star::datatransfer::DataFlavor& rFlavor,
        INetImage& rINtImg )
{
    SotStorageStreamRef xStm;
    sal_Bool bRet = GetSotStorageStream( rFlavor, xStm );

    if( bRet )
        bRet = rINtImg.Read( *xStm, SotExchange::GetFormat( rFlavor ) );
    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetFileList( SotFormatStringId nFormat,
                                                FileList& rFileList )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetFileList( aFlavor, rFileList ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetFileList(
            const ::com::sun::star::datatransfer::DataFlavor&,
            FileList& rFileList )
{
    SotStorageStreamRef xStm;
    sal_Bool            bRet = sal_False;

    for( sal_uInt32 i = 0, nFormatCount = GetFormatCount(); ( i < nFormatCount ) && !bRet; ++i )
    {
        if( SOT_FORMAT_FILE_LIST == GetFormat( i ) )
        {
            const DataFlavor aFlavor( GetFormatDataFlavor( i ) );

            if( GetSotStorageStream( aFlavor, xStm ) )
            {
                if( aFlavor.MimeType.indexOf( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text/uri-list" )) ) > -1 )
                {
                    ByteString aByteString;

                    while( xStm->ReadLine( aByteString ) )
                        if( aByteString.Len() && aByteString.GetChar( 0 ) != '#' )
                            rFileList.AppendFile( String( aByteString, RTL_TEXTENCODING_UTF8 ) );

                    bRet = sal_True;
                 }
                 else
                    bRet = ( ( *xStm >> rFileList ).GetError() == ERRCODE_NONE );
            }
        }
    }

    return bRet;
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetSequence( SotFormatStringId nFormat, Sequence< sal_Int8 >& rSeq )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetSequence( aFlavor, rSeq ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetSequence( const DataFlavor& rFlavor, Sequence< sal_Int8 >& rSeq )
{
#ifdef DEBUG
    fprintf( stderr, "TransferableDataHelper requests sequence of data\n" );
#endif

    const Any aAny( GetAny( rFlavor ) );
    return( aAny.hasValue() && ( aAny >>= rSeq ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetSotStorageStream( SotFormatStringId nFormat, SotStorageStreamRef& rxStream )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetSotStorageStream( aFlavor, rxStream ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetSotStorageStream( const DataFlavor& rFlavor, SotStorageStreamRef& rxStream )
{
    Sequence< sal_Int8 >    aSeq;
    sal_Bool                bRet = GetSequence( rFlavor, aSeq );

    if( bRet )
    {
        rxStream = new SotStorageStream( String() );
        rxStream->Write( aSeq.getConstArray(), aSeq.getLength() );
        rxStream->Seek( 0 );
    }

    return bRet;
}

sal_Bool TransferableDataHelper::GetInputStream( SotFormatStringId nFormat, Reference < XInputStream >& rxStream )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetInputStream( aFlavor, rxStream ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetInputStream( const DataFlavor& rFlavor, Reference < XInputStream >& rxStream )
{
    Sequence< sal_Int8 >    aSeq;
    sal_Bool                bRet = GetSequence( rFlavor, aSeq );

    if( bRet )
          rxStream = new ::comphelper::SequenceInputStream( aSeq );

    return bRet;
}

// -----------------------------------------------------------------------------


sal_Bool TransferableDataHelper::GetInterface( SotFormatStringId nFormat, Reference< XInterface >& rIf )
{
    DataFlavor aFlavor;
    return( SotExchange::GetFormatDataFlavor( nFormat, aFlavor ) && GetInterface( aFlavor, rIf ) );
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::GetInterface( const DataFlavor& rFlavor, Reference< XInterface >& rIf )
{
    const Any aAny( GetAny( rFlavor ) );
    return( aAny.hasValue() && ( aAny >>= rIf ) );
}

// -----------------------------------------------------------------------------
void TransferableDataHelper::Rebind( const Reference< XTransferable >& _rxNewContent )
{
    mxTransfer = _rxNewContent;
    InitFormats();
}

// -----------------------------------------------------------------------------

sal_Bool TransferableDataHelper::StartClipboardListening( )
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );

    StopClipboardListening( );

    mpImpl->mpClipboardListener = new TransferableClipboardNotifier( mxClipboard, *this, mpImpl->maMutex );
    mpImpl->mpClipboardListener->acquire();

    return mpImpl->mpClipboardListener->isListening();
}

// -----------------------------------------------------------------------------

void TransferableDataHelper::StopClipboardListening( )
{
    ::osl::MutexGuard aGuard( mpImpl->maMutex );

    if ( mpImpl->mpClipboardListener )
    {
        mpImpl->mpClipboardListener->dispose();
        mpImpl->mpClipboardListener->release();
        mpImpl->mpClipboardListener = NULL;
    }
}

// -----------------------------------------------------------------------------

TransferableDataHelper TransferableDataHelper::CreateFromSystemClipboard( Window * pWindow )
{
    DBG_ASSERT( pWindow, "Window pointer is NULL" );

    Reference< XClipboard > xClipboard;
    TransferableDataHelper  aRet;

    if( pWindow )
        xClipboard = pWindow->GetClipboard();

    if( xClipboard.is() )
    {
        try
        {
            Reference< XTransferable > xTransferable( xClipboard->getContents() );

            if( xTransferable.is() )
            {
                aRet = TransferableDataHelper( xTransferable );
                // also copy the clipboard
                aRet.mxClipboard = xClipboard;
            }
        }
        catch( const ::com::sun::star::uno::Exception& )
        {
        }
    }

    return aRet;
}


// -----------------------------------------------------------------------------

TransferableDataHelper TransferableDataHelper::CreateFromSelection( Window* pWindow )
{
    DBG_ASSERT( pWindow, "Window pointer is NULL" );

    Reference< XClipboard > xSelection;
       TransferableDataHelper   aRet;

    if( pWindow )
        xSelection = pWindow->GetPrimarySelection();

    if( xSelection.is() )
       {
        const sal_uInt32 nRef = Application::ReleaseSolarMutex();

          try
        {
            Reference< XTransferable > xTransferable( xSelection->getContents() );

            if( xTransferable.is() )
               {
                aRet = TransferableDataHelper( xTransferable );
                   aRet.mxClipboard = xSelection;
            }
           }
        catch( const ::com::sun::star::uno::Exception& )
        {
           }

        Application::AcquireSolarMutex( nRef );
    }

    return aRet;
}

// -----------------------------------------------------------------------------
sal_Bool TransferableDataHelper::IsEqual( const ::com::sun::star::datatransfer::DataFlavor& rInternalFlavor,
                                          const ::com::sun::star::datatransfer::DataFlavor& rRequestFlavor,
                                          sal_Bool )
{
    Reference< XMultiServiceFactory >       xFact( ::comphelper::getProcessServiceFactory() );
    Reference< XMimeContentTypeFactory >    xMimeFact;
    sal_Bool                                bRet = sal_False;

    try
    {
        if( xFact.is() )
            xMimeFact = Reference< XMimeContentTypeFactory >( xFact->createInstance( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.datatransfer.MimeContentTypeFactory" )) ),
                                                              UNO_QUERY );

        if( xMimeFact.is() )
        {
            Reference< XMimeContentType > xRequestType1( xMimeFact->createMimeContentType( rInternalFlavor.MimeType ) );
            Reference< XMimeContentType > xRequestType2( xMimeFact->createMimeContentType( rRequestFlavor.MimeType ) );

            if( xRequestType1.is() && xRequestType2.is() )
            {
                if( xRequestType1->getFullMediaType().equalsIgnoreAsciiCase( xRequestType2->getFullMediaType() ) )
                {
                    if( xRequestType1->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "text/plain" )) ) )
                    {
                        // special handling for text/plain media types
                        const ::rtl::OUString aCharsetString(RTL_CONSTASCII_USTRINGPARAM( "charset" ));

                        if( !xRequestType2->hasParameter( aCharsetString ) ||
                            xRequestType2->getParameterValue( aCharsetString ).equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "utf-16" )) ) ||
                            xRequestType2->getParameterValue( aCharsetString ).equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "unicode" )) ) )
                        {
                            bRet = sal_True;
                        }
                    }
                    else if( xRequestType1->getFullMediaType().equalsIgnoreAsciiCase( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "application/x-openoffice" )) ) )
                    {
                        // special handling for application/x-openoffice media types
                        const ::rtl::OUString aFormatString(RTL_CONSTASCII_USTRINGPARAM( "windows_formatname" ));

                        if( xRequestType1->hasParameter( aFormatString ) &&
                            xRequestType2->hasParameter( aFormatString ) &&
                            xRequestType1->getParameterValue( aFormatString ).equalsIgnoreAsciiCase( xRequestType2->getParameterValue( aFormatString ) ) )
                        {
                            bRet = sal_True;
                        }
                    }
                    else
                        bRet = sal_True;
                }
            }
        }
    }
    catch( const ::com::sun::star::uno::Exception& )
    {
        bRet = rInternalFlavor.MimeType.equalsIgnoreAsciiCase( rRequestFlavor.MimeType );
    }

    return bRet;
}

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