/*************************************************************************
 *
 * 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.
 *
 ************************************************************************/
#if defined(_MSC_VER) && (_MSC_VER > 1310)
#pragma warning(disable : 4917 4555)
#endif

#include "embeddoc.hxx"
#include <com/sun/star/uno/Any.h>
#include <com/sun/star/uno/Exception.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/io/XInputStream.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/io/XSeekable.hpp>
#include <com/sun/star/frame/XModel.hpp>
#include <com/sun/star/frame/XLoadable.hpp>
#include <com/sun/star/util/XModifiable.hpp>
#include <com/sun/star/frame/XStorable.hpp>
#include <com/sun/star/frame/XComponentLoader.hpp>
#include <com/sun/star/util/XUrlTransformer.hpp>


#include <osl/mutex.hxx>
#include <osl/diagnose.h>

#include <string.h>

#define EXT_STREAM_LENGTH 16

using namespace ::com::sun::star;

extern ::rtl::OUString  getStorageTypeFromGUID_Impl( GUID* guid );
extern ::rtl::OUString	getServiceNameFromGUID_Impl( GUID* );
extern ::rtl::OUString	getFilterNameFromGUID_Impl( GUID* );
// extern CLIPFORMAT		getClipFormatFromGUID_Impl( GUID* );
::rtl::OUString getTestFileURLFromGUID_Impl( GUID* guid );

const ::rtl::OUString aOfficeEmbedStreamName( RTL_CONSTASCII_USTRINGPARAM ( "package_stream" ) );
const ::rtl::OUString aExtentStreamName( RTL_CONSTASCII_USTRINGPARAM ( "properties_stream" ) );

uno::Reference< io::XInputStream > createTempXInStreamFromIStream(
										uno::Reference< lang::XMultiServiceFactory > xFactory,
										IStream *pStream )
{
	uno::Reference< io::XInputStream > xResult;

	if ( !pStream )
		return xResult;

	const ::rtl::OUString aServiceName ( RTL_CONSTASCII_USTRINGPARAM ( "com.sun.star.io.TempFile" ) );
	uno::Reference < io::XOutputStream > xTempOut = uno::Reference < io::XOutputStream > (
															xFactory->createInstance ( aServiceName ),
															uno::UNO_QUERY );
	if ( xTempOut.is() )
	{
		ULARGE_INTEGER nNewPos;
		LARGE_INTEGER aZero = { 0L, 0L };
		HRESULT hr = pStream->Seek( aZero, STREAM_SEEK_SET, &nNewPos );
		if ( FAILED( hr ) ) return xResult;

		STATSTG aStat;
		hr = pStream->Stat( &aStat, STATFLAG_NONAME );
		if ( FAILED( hr ) ) return xResult;

		sal_uInt32 nSize = (sal_uInt32)aStat.cbSize.QuadPart;
		sal_uInt32 nCopied = 0;
		uno::Sequence< sal_Int8 > aBuffer( nConstBufferSize );
		try
		{
			sal_uInt32 nRead = 0;
			do
			{
				pStream->Read( (void*)aBuffer.getArray(), nConstBufferSize, &nRead );

				if ( nRead < nConstBufferSize )
					aBuffer.realloc( nRead );

				xTempOut->writeBytes( aBuffer );
				nCopied += nRead;
			} while( nRead == nConstBufferSize );

			if ( nCopied == nSize )
			{
				uno::Reference < io::XSeekable > xTempSeek ( xTempOut, uno::UNO_QUERY );
				if ( xTempSeek.is() )
				{
					xTempSeek->seek ( 0 );
					xResult = uno::Reference< io::XInputStream >( xTempOut, uno::UNO_QUERY );
				}
			}
		}
		catch( uno::Exception& )
		{
		}
	}

	return xResult;
}

HRESULT copyXTempOutToIStream( uno::Reference< io::XOutputStream > xTempOut, IStream* pStream )
{
	if ( !xTempOut.is() || !pStream )
		return E_FAIL;

	uno::Reference < io::XSeekable > xTempSeek ( xTempOut, uno::UNO_QUERY );
	if ( !xTempSeek.is() )
		return E_FAIL;

	xTempSeek->seek ( 0 );

	uno::Reference< io::XInputStream > xTempIn ( xTempOut, uno::UNO_QUERY );
	if ( !xTempSeek.is() )
		return E_FAIL;

	// Seek to zero and truncate the stream
	ULARGE_INTEGER nNewPos;
	LARGE_INTEGER aZero = { 0L, 0L };
	HRESULT hr = pStream->Seek( aZero, STREAM_SEEK_SET, &nNewPos );
	if ( FAILED( hr ) ) return E_FAIL;
	ULARGE_INTEGER aUZero = { 0L, 0L };
	hr = pStream->SetSize( aUZero );
	if ( FAILED( hr ) ) return E_FAIL;

	uno::Sequence< sal_Int8 > aBuffer( nConstBufferSize );
	sal_uInt32 nReadBytes = 0;

	do
	{
		try {
			nReadBytes = xTempIn->readBytes( aBuffer, nConstBufferSize );
		}
		catch( uno::Exception& )
		{
			return E_FAIL;
		}

		sal_uInt32 nWritten = 0;
		HRESULT hr = pStream->Write( (void*)aBuffer.getArray(), nReadBytes, &nWritten );
		if ( !SUCCEEDED( hr ) || nWritten != nReadBytes )
			return E_FAIL;

	} while( nReadBytes == nConstBufferSize );

	return S_OK;
}


//===============================================================================
// EmbedDocument_Impl
//===============================================================================

EmbedDocument_Impl::EmbedDocument_Impl( const uno::Reference< lang::XMultiServiceFactory >& xFactory, const GUID* guid )
: m_refCount( 0L )
, m_xFactory( xFactory )
, m_guid( *guid )
, m_bIsDirty( sal_False )
, m_nAdviseNum( 0 )
, m_bIsInVerbHandling( sal_False )
//, m_bLoadedFromFile( sal_False )
{
	m_xOwnAccess = new EmbeddedDocumentInstanceAccess_Impl( this );
	m_pDocHolder = new DocumentHolder( xFactory, m_xOwnAccess );
	m_pDocHolder->acquire();
}

EmbedDocument_Impl::~EmbedDocument_Impl()
{
	m_pDocHolder->FreeOffice();

    if ( m_pDocHolder->HasFrame() && m_pDocHolder->IsLink() )
    {
        // a link with frame should be only disconnected, not closed
        m_pDocHolder->DisconnectFrameDocument( sal_True );
    }
    else
    {
        m_pDocHolder->CloseDocument();
        m_pDocHolder->CloseFrame();
    }

	m_pDocHolder->release();
}

uno::Sequence< beans::PropertyValue > EmbedDocument_Impl::fillArgsForLoading_Impl( uno::Reference< io::XInputStream > xStream, DWORD /*nStreamMode*/, LPCOLESTR pFilePath )
{
	uno::Sequence< beans::PropertyValue > aArgs( 3 );

	sal_Int32 nInd = 0; // must not be bigger than the preset size
	aArgs[nInd].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "FilterName" ) );
	aArgs[nInd++].Value <<= getFilterNameFromGUID_Impl( &m_guid );

	if ( xStream.is() )
	{
		aArgs[nInd].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "InputStream" ) );
		aArgs[nInd++].Value <<= xStream;
		aArgs[nInd].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "URL" ) );
		aArgs[nInd++].Value <<= ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "private:stream" ) );
	}
	else
	{
		aArgs[nInd].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "URL" ) );

    	rtl::OUString sDocUrl;
		if ( pFilePath )
		{
			::rtl::OUString aServiceName( RTL_CONSTASCII_USTRINGPARAM ( "com.sun.star.util.URLTransformer" ) );
			uno::Reference< util::XURLTransformer > aTransformer( m_xFactory->createInstance( aServiceName ),
																	uno::UNO_QUERY );
			if ( aTransformer.is() )
			{
				util::URL aURL;

				aURL.Complete = ::rtl::OUString( reinterpret_cast<const sal_Unicode*>(pFilePath) );

				if ( aTransformer->parseSmart( aURL, ::rtl::OUString() ) )
					sDocUrl = aURL.Complete;
			}
		}

		aArgs[nInd++].Value <<= sDocUrl;
	}

	aArgs.realloc( nInd );

	// aArgs[].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "ReadOnly" ) );
	// aArgs[].Value <<= sal_False; //( ( nStreamMode & ( STGM_READWRITE | STGM_WRITE ) ) ? sal_True : sal_False );

	return aArgs;
}

uno::Sequence< beans::PropertyValue > EmbedDocument_Impl::fillArgsForStoring_Impl( uno::Reference< io::XOutputStream > xStream)
{
	uno::Sequence< beans::PropertyValue > aArgs( xStream.is() ? 2 : 1 );

	aArgs[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "FilterName" ) );
	aArgs[0].Value <<= getFilterNameFromGUID_Impl( &m_guid );

	if ( xStream.is() )
	{
		aArgs[1].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "OutputStream" ) );
		aArgs[1].Value <<= xStream;
	}

	return aArgs;
}

HRESULT EmbedDocument_Impl::SaveTo_Impl( IStorage* pStg )
{
	if ( !pStg || pStg == m_pMasterStorage )
		return E_FAIL;

	// for saveto operation the master storage
	// should not enter NoScribble mode
	CComPtr< IStream > pOrigOwn = m_pOwnStream;
	CComPtr< IStream > pOrigExt = m_pExtStream;
	HRESULT hr = Save( pStg, sal_False );
    pStg->Commit( STGC_ONLYIFCURRENT );
	m_pOwnStream = pOrigOwn;
	m_pExtStream = pOrigExt;

	return hr;
}

//-------------------------------------------------------------------------------
// IUnknown

STDMETHODIMP EmbedDocument_Impl::QueryInterface( REFIID riid, void FAR* FAR* ppv )
{
    if(IsEqualIID(riid, IID_IUnknown))
	{
		AddRef();
		*ppv = (IUnknown*) (IPersistStorage*) this;
		return S_OK;
    }
    else if (IsEqualIID(riid, IID_IPersist))
	{
		AddRef();
		*ppv = (IPersist*) (IPersistStorage*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IExternalConnection))
	{
		AddRef();
        *ppv = (IExternalConnection*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IPersistStorage))
	{
		AddRef();
		*ppv = (IPersistStorage*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IDataObject))
	{
		AddRef();
		*ppv = (IDataObject*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IOleObject))
	{
		AddRef();
		*ppv = (IOleObject*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IOleWindow))
	{
		AddRef();
		*ppv = (IOleWindow*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IOleInPlaceObject))
	{
		AddRef();
		*ppv = (IOleInPlaceObject*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IPersistFile))
	{
		AddRef();
		*ppv = (IPersistFile*) this;
		return S_OK;
	}
    else if (IsEqualIID(riid, IID_IDispatch))
	{
		AddRef();
		*ppv = (IDispatch*) this;
		return S_OK;
	}

    *ppv = NULL;
    return ResultFromScode(E_NOINTERFACE);
}

STDMETHODIMP_(ULONG) EmbedDocument_Impl::AddRef()
{
	return osl_incrementInterlockedCount( &m_refCount);
}

STDMETHODIMP_(ULONG) EmbedDocument_Impl::Release()
{
	// if there is a time when the last reference is destructed, that means that only internal pointers are alive
	// after the following call either the refcount is increased or the pointers are empty
	if ( m_refCount == 1 )
		m_xOwnAccess->ClearEmbedDocument();

	sal_Int32 nCount = osl_decrementInterlockedCount( &m_refCount );
	if ( nCount == 0 )
		delete this;
    return nCount;
}

//-------------------------------------------------------------------------------
// IPersist

STDMETHODIMP EmbedDocument_Impl::GetClassID( CLSID* pClassId )
{
	*pClassId = *&m_guid;
	return S_OK;
}

//-------------------------------------------------------------------------------
// IPersistStorage

STDMETHODIMP EmbedDocument_Impl::IsDirty()
{
	// the link modified state is controlled by the document
    if ( m_bIsDirty && !m_aFileName.getLength() )
        return S_OK;

    uno::Reference< util::XModifiable > xMod( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
    if ( xMod.is() )
        return xMod->isModified() ? S_OK : S_FALSE;
    return S_FALSE;
}

STDMETHODIMP EmbedDocument_Impl::InitNew( IStorage *pStg )
{
	HRESULT hr = CO_E_ALREADYINITIALIZED;

	if ( !m_pDocHolder->GetDocument().is() )
	{

		STATSTG aStat;
		hr = pStg->Stat( &aStat, STATFLAG_NONAME );
		if ( FAILED( hr ) ) return E_FAIL;

		DWORD nStreamMode = aStat.grfMode;

		hr = E_FAIL;
		if ( m_xFactory.is() && pStg )
		{
			uno::Reference< frame::XModel > aDocument(
							m_xFactory->createInstance( getServiceNameFromGUID_Impl( &m_guid ) ),
							uno::UNO_QUERY );
			if ( aDocument.is() )
			{
				m_pDocHolder->SetDocument( aDocument );

				uno::Reference< frame::XLoadable > xLoadable( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
				if( xLoadable.is() )
				{
					try
					{
						xLoadable->initNew();
						// xLoadable->load( fillArgsForLoading_Impl( uno::Reference< io::XInputStream >(), nStreamMode ) );
						hr = S_OK;
					}
					catch( uno::Exception& )
					{
					}
				}

				if ( hr == S_OK )
				{
					::rtl::OUString aCurType = getStorageTypeFromGUID_Impl( &m_guid ); // ???
					CLIPFORMAT cf = (CLIPFORMAT)RegisterClipboardFormatA( "Embedded Object" );
					hr = WriteFmtUserTypeStg( pStg,
											cf,							// ???
											reinterpret_cast<LPWSTR>(( sal_Unicode* )aCurType.getStr()) );

					if ( hr == S_OK )
					{
						hr = pStg->CreateStream( reinterpret_cast<LPCWSTR>(aOfficeEmbedStreamName.getStr()), 
											 	STGM_CREATE | ( nStreamMode & 0x73 ),
											 	0,
											 	0,
											 	&m_pOwnStream );

						if ( hr == S_OK && m_pOwnStream )
						{
							hr = pStg->CreateStream( reinterpret_cast<LPCWSTR>(aExtentStreamName.getStr()), 
											 		STGM_CREATE | ( nStreamMode & 0x73 ),
											 		0,
											 		0,
											 		&m_pExtStream );

							if ( hr == S_OK && m_pExtStream )
							{

								m_pMasterStorage = pStg;
								m_bIsDirty = sal_True;
							}
							else
								hr = E_FAIL;
						}
						else
							hr = E_FAIL;
					}
					else
						hr = E_FAIL;
				}

				if ( hr != S_OK )
					m_pDocHolder->CloseDocument();
			}
		}
	}

    return hr;
}

STDMETHODIMP EmbedDocument_Impl::Load( IStorage *pStg )
{
	if ( m_pDocHolder->GetDocument().is() )
		return CO_E_ALREADYINITIALIZED;

	if ( !m_xFactory.is() || !pStg )
		return E_FAIL;

	HRESULT hr = E_FAIL;

	STATSTG aStat;
	hr = pStg->Stat( &aStat, STATFLAG_NONAME );
	if ( FAILED( hr ) ) return E_FAIL;

	DWORD nStreamMode = aStat.grfMode;
	hr = pStg->OpenStream( reinterpret_cast<LPCWSTR>(aOfficeEmbedStreamName.getStr()),
							0,
							nStreamMode & 0x73,
							0,
							&m_pOwnStream );
	if ( !m_pOwnStream ) hr = E_FAIL;

	if ( SUCCEEDED( hr ) )
	{
		hr = pStg->OpenStream( reinterpret_cast<LPCWSTR>(aExtentStreamName.getStr()),
								0,
								nStreamMode & 0x73,
								0,
								&m_pExtStream );
		if ( !m_pExtStream ) hr = E_FAIL;
	}

	// RECTL aRectToSet;
	SIZEL aSizeToSet;
	if ( SUCCEEDED( hr ) )
	{
		ULARGE_INTEGER nNewPos;
		LARGE_INTEGER aZero = { 0L, 0L };
		hr = m_pExtStream->Seek( aZero, STREAM_SEEK_SET, &nNewPos );
		if ( SUCCEEDED( hr ) )
		{
			sal_uInt32 nRead;
			sal_Int8 aInf[EXT_STREAM_LENGTH];
			hr = m_pExtStream->Read( (void*)aInf, EXT_STREAM_LENGTH, &nRead );
			if ( nRead != EXT_STREAM_LENGTH ) hr = E_FAIL;

			if ( SUCCEEDED( hr ) )
			{
				// aRectToSet.left = *((sal_Int32*)aInf);
				// aRectToSet.top = *((sal_Int32*)&aInf[4]);
				// aRectToSet.right = *((sal_Int32*)&aInf[8]);
				// aRectToSet.bottom = *((sal_Int32*)&aInf[12]);
				aSizeToSet.cx = *((sal_Int32*)&aInf[8]) - *((sal_Int32*)aInf);
				aSizeToSet.cy = *((sal_Int32*)&aInf[12]) - *((sal_Int32*)&aInf[4]);
			}
		}
	}

	if ( SUCCEEDED( hr ) )
	{
		hr = E_FAIL;

		uno::Reference < io::XInputStream > xTempIn = createTempXInStreamFromIStream( m_xFactory, m_pOwnStream );
		if ( xTempIn.is() )
		{
			uno::Reference< frame::XModel > aDocument(
												m_xFactory->createInstance( getServiceNameFromGUID_Impl( &m_guid ) ),
												uno::UNO_QUERY );
			if ( aDocument.is() )
			{
				m_pDocHolder->SetDocument( aDocument );

				uno::Reference< frame::XLoadable > xLoadable( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
				if( xLoadable.is() )
				{
					try
					{
						xLoadable->load( fillArgsForLoading_Impl( xTempIn, nStreamMode ) );
						m_pMasterStorage = pStg;
						hr = m_pDocHolder->SetExtent( &aSizeToSet );
						// hr = m_pDocHolder->SetVisArea( &aRectToSet );
					}
					catch( uno::Exception& )
					{
					}
				}

				if ( FAILED( hr ) )
					m_pDocHolder->CloseDocument();
			}
		}
	}

	if ( FAILED( hr ) )
	{
		m_pOwnStream = CComPtr< IStream >();
		m_pExtStream = CComPtr< IStream >();
		hr = pStg->DestroyElement( reinterpret_cast<LPCWSTR>(aOfficeEmbedStreamName.getStr()) );
		hr = pStg->DestroyElement( reinterpret_cast<LPCWSTR>(aExtentStreamName.getStr()) );

		OSL_ENSURE( SUCCEEDED( hr ), "Can not destroy created stream!\n" );
		if ( FAILED( hr ) )
			hr = E_FAIL;
	}

   	return hr;
}

STDMETHODIMP EmbedDocument_Impl::Save( IStorage *pStgSave, BOOL fSameAsLoad )
{
	if ( !m_pDocHolder->GetDocument().is() || !m_xFactory.is() || !pStgSave || !m_pOwnStream || !m_pExtStream )
		return E_FAIL;

	CComPtr< IStream > pTargetStream;
	CComPtr< IStream > pNewExtStream;

	if ( !fSameAsLoad && pStgSave != m_pMasterStorage )
	{
		OSL_ENSURE( m_pMasterStorage, "How could the document be initialized without storage!??\n" );
		HRESULT hr = m_pMasterStorage->CopyTo( NULL, NULL, NULL, pStgSave );
		if ( FAILED( hr ) ) return E_FAIL;

		STATSTG aStat;
		hr = pStgSave->Stat( &aStat, STATFLAG_NONAME );
		if ( FAILED( hr ) ) return E_FAIL;

		DWORD nStreamMode = aStat.grfMode;
		hr = pStgSave->CreateStream( reinterpret_cast<LPCWSTR>(aOfficeEmbedStreamName.getStr()), 
						 		STGM_CREATE | ( nStreamMode & 0x73 ),
								0,
						 		0,
						 		&pTargetStream );
		if ( FAILED( hr ) || !pTargetStream ) return E_FAIL;

		hr = pStgSave->CreateStream( reinterpret_cast<LPCWSTR>(aExtentStreamName.getStr()), 
						 		STGM_CREATE | ( nStreamMode & 0x73 ),
								0,
						 		0,
						 		&pNewExtStream );
		if ( FAILED( hr ) || !pNewExtStream ) return E_FAIL;
	}
	else
	{
		pTargetStream = m_pOwnStream;
		pNewExtStream = m_pExtStream;
	}

	HRESULT hr = E_FAIL;

	const ::rtl::OUString aServiceName ( RTL_CONSTASCII_USTRINGPARAM ( "com.sun.star.io.TempFile" ) );
	uno::Reference < io::XOutputStream > xTempOut = uno::Reference < io::XOutputStream > (
															m_xFactory->createInstance ( aServiceName ),
															uno::UNO_QUERY );

	if ( xTempOut.is() )
	{
		uno::Reference< frame::XStorable > xStorable( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
		if( xStorable.is() )
		{
			try
			{
				xStorable->storeToURL( ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM ( "private:stream" ) ),
											fillArgsForStoring_Impl( xTempOut ) );
				hr = copyXTempOutToIStream( xTempOut, pTargetStream );
				if ( SUCCEEDED( hr ) )
				{
					// no need to truncate the stream, the size of the stream is always the same
					ULARGE_INTEGER nNewPos;
					LARGE_INTEGER aZero = { 0L, 0L };
					hr = pNewExtStream->Seek( aZero, STREAM_SEEK_SET, &nNewPos );
					if ( SUCCEEDED( hr ) )
					{
						SIZEL aSize;
						hr = m_pDocHolder->GetExtent( &aSize );

						if ( SUCCEEDED( hr ) )
						{
							sal_uInt32 nWritten;
							sal_Int8 aInf[EXT_STREAM_LENGTH];
							*((sal_Int32*)aInf) = 0;
							*((sal_Int32*)&aInf[4]) = 0;
							*((sal_Int32*)&aInf[8]) = aSize.cx;
							*((sal_Int32*)&aInf[12]) = aSize.cy;

							hr = pNewExtStream->Write( (void*)aInf, EXT_STREAM_LENGTH, &nWritten );
							if ( nWritten != EXT_STREAM_LENGTH ) hr = E_FAIL;

							if ( SUCCEEDED( hr ) )
							{
								m_pOwnStream = CComPtr< IStream >();
								m_pExtStream = CComPtr< IStream >();
								if ( fSameAsLoad || pStgSave == m_pMasterStorage )
                                {
                                    uno::Reference< util::XModifiable > xMod( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
                                    if ( xMod.is() )
                                        xMod->setModified( sal_False );
									m_bIsDirty = sal_False;
                                }
							}
						}
					}
				}
			}
			catch( uno::Exception& )
			{
			}
		}
	}

	return hr;
}

STDMETHODIMP EmbedDocument_Impl::SaveCompleted( IStorage *pStgNew )
{
	// m_pOwnStream == NULL && m_pMasterStorage != NULL means the object is in NoScribble mode
	// m_pOwnStream == NULL && m_pMasterStorage == NULL means the object is in HandsOff mode

	if ( m_pOwnStream || m_pExtStream )
		return E_UNEXPECTED;

	if ( !m_pMasterStorage && !pStgNew )
		return E_INVALIDARG;

	if ( pStgNew )
		m_pMasterStorage = pStgNew;

	STATSTG aStat;
	HRESULT hr = m_pMasterStorage->Stat( &aStat, STATFLAG_NONAME );
	if ( FAILED( hr ) ) return E_OUTOFMEMORY;

	DWORD nStreamMode = aStat.grfMode;
	hr = m_pMasterStorage->OpenStream( reinterpret_cast<LPCWSTR>(aOfficeEmbedStreamName.getStr()),
										0,
										nStreamMode & 0x73,
										0,
										&m_pOwnStream );
	if ( FAILED( hr ) || !m_pOwnStream ) return E_OUTOFMEMORY;

	hr = m_pMasterStorage->OpenStream( reinterpret_cast<LPCWSTR>(aExtentStreamName.getStr()),
										0,
										nStreamMode & 0x73,
										0,
										&m_pExtStream );
	if ( FAILED( hr ) || !m_pExtStream ) return E_OUTOFMEMORY;

	sal_Bool bModified = sal_False;
	uno::Reference< util::XModifiable > xMod( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
	if ( xMod.is() )
		bModified = xMod->isModified();

	for ( AdviseSinkHashMapIterator iAdvise = m_aAdviseHashMap.begin(); iAdvise != m_aAdviseHashMap.end(); iAdvise++ )
	{
		if ( iAdvise->second )
			iAdvise->second->OnSave();
	}

	if ( xMod.is() )
		bModified = xMod->isModified();

	return S_OK;
}

STDMETHODIMP EmbedDocument_Impl::HandsOffStorage()
{
	m_pMasterStorage = CComPtr< IStorage >();
	m_pOwnStream = CComPtr< IStream >();
	m_pExtStream = CComPtr< IStream >();

	return S_OK;
}

//-------------------------------------------------------------------------------
// IPersistFile

STDMETHODIMP EmbedDocument_Impl::Load( LPCOLESTR pszFileName, DWORD /*dwMode*/ )
{
	if ( m_pDocHolder->GetDocument().is() )
		return CO_E_ALREADYINITIALIZED;

	if ( !m_xFactory.is() )
		return E_FAIL;

	DWORD nStreamMode = STGM_CREATE | STGM_READWRITE | STGM_DELETEONRELEASE | STGM_SHARE_EXCLUSIVE;
	HRESULT hr = StgCreateDocfile( NULL,
									 nStreamMode ,
									 0,
									 &m_pMasterStorage );

	if ( FAILED( hr ) || !m_pMasterStorage ) return E_FAIL;

	::rtl::OUString aCurType = getServiceNameFromGUID_Impl( &m_guid ); // ???
	CLIPFORMAT cf = (CLIPFORMAT)RegisterClipboardFormatA( "Embedded Object" );
	hr = WriteFmtUserTypeStg( m_pMasterStorage,
							cf,							// ???
							reinterpret_cast<LPWSTR>(( sal_Unicode* )aCurType.getStr()) );
	if ( FAILED( hr ) ) return E_FAIL;

	hr = m_pMasterStorage->SetClass( m_guid );
	if ( FAILED( hr ) ) return E_FAIL;

	hr = m_pMasterStorage->CreateStream( reinterpret_cast<LPCWSTR>(aOfficeEmbedStreamName.getStr()),
							STGM_CREATE | ( nStreamMode & 0x73 ),
							0,
							0,
							&m_pOwnStream );
	if ( FAILED( hr ) || !m_pOwnStream ) return E_FAIL;

	hr = m_pMasterStorage->CreateStream( reinterpret_cast<LPCWSTR>(aExtentStreamName.getStr()),
							STGM_CREATE | ( nStreamMode & 0x73 ),
							0,
							0,
							&m_pExtStream );
	if ( FAILED( hr ) || !m_pExtStream ) return E_FAIL;


	uno::Reference< frame::XModel > aDocument(
					m_xFactory->createInstance( getServiceNameFromGUID_Impl( &m_guid ) ),
					uno::UNO_QUERY );
	if ( aDocument.is() )
	{
		m_pDocHolder->SetDocument( aDocument, sal_True );

		uno::Reference< frame::XLoadable > xLoadable( m_pDocHolder->GetDocument(), uno::UNO_QUERY );
		if( xLoadable.is() )
		{
			try
			{
				xLoadable->load( fillArgsForLoading_Impl( uno::Reference< io::XInputStream >(),
															STGM_READWRITE,
															pszFileName ) );
				hr = S_OK;

				m_aFileName = ::rtl::OUString( reinterpret_cast<const sal_Unicode*>(pszFileName) );
			}
			catch( uno::Exception& )
			{
			}
		}

		if ( hr == S_OK )
		{
			::rtl::OUString aCurType = getServiceNameFromGUID_Impl( &m_guid ); // ???
			CLIPFORMAT cf = (CLIPFORMAT)RegisterClipboardFormatA( "Embedded Object" );
			hr = WriteFmtUserTypeStg( m_pMasterStorage,
									cf,							// ???
									reinterpret_cast<LPWSTR>(( sal_Unicode* )aCurType.getStr()) );

			if ( SUCCEEDED( hr ) )
			{
				// no need to truncate the stream, the size of the stream is always the same
				ULARGE_INTEGER nNewPos;
				LARGE_INTEGER aZero = { 0L, 0L };
				hr = m_pExtStream->Seek( aZero, STREAM_SEEK_SET, &nNewPos );
				if ( SUCCEEDED( hr ) )
				{
					SIZEL aSize;
					hr = m_pDocHolder->GetExtent( &aSize );

					if ( SUCCEEDED( hr ) )
					{
						sal_uInt32 nWritten;
						sal_Int8 aInf[EXT_STREAM_LENGTH];
						*((sal_Int32*)aInf) = 0;
						*((sal_Int32*)&aInf[4]) = 0;
						*((sal_Int32*)&aInf[8]) = aSize.cx;
						*((sal_Int32*)&aInf[12]) = aSize.cy;

						hr = m_pExtStream->Write( (void*)aInf, EXT_STREAM_LENGTH, &nWritten );
						if ( nWritten != EXT_STREAM_LENGTH ) hr = E_FAIL;
					}
				}
			}

			if ( SUCCEEDED( hr ) )
				m_bIsDirty = sal_True;
			else
				hr = E_FAIL;
		}

		if ( FAILED( hr ) )
		{
			m_pDocHolder->CloseDocument();
			m_pOwnStream = NULL;
			m_pExtStream = NULL;
			m_pMasterStorage = NULL;
		}
	}

    return hr;
}

STDMETHODIMP EmbedDocument_Impl::Save( LPCOLESTR pszFileName, BOOL fRemember )
{
	if ( !m_pDocHolder->GetDocument().is() || !m_xFactory.is() )
		return E_FAIL;

	HRESULT hr = E_FAIL;

	// TODO/LATER: currently there is no hands off state implemented
	try
	{
		uno::Reference< frame::XStorable > xStorable( m_pDocHolder->GetDocument(), uno::UNO_QUERY_THROW );

		if ( !pszFileName )
			xStorable->store();
		else
		{
			util::URL aURL;
			aURL.Complete = ::rtl::OUString( reinterpret_cast<const sal_Unicode*>( pszFileName ) );

			::rtl::OUString aServiceName( RTL_CONSTASCII_USTRINGPARAM ( "com.sun.star.util.URLTransformer" ) );
			uno::Reference< util::XURLTransformer > aTransformer( m_xFactory->createInstance( aServiceName ),
																  uno::UNO_QUERY_THROW );

			if ( aTransformer->parseSmart( aURL, ::rtl::OUString() ) && aURL.Complete.getLength() )
			{
				if ( fRemember )
				{
					xStorable->storeAsURL( aURL.Complete, fillArgsForStoring_Impl( uno::Reference< io::XOutputStream >() ) );
					m_aFileName = aURL.Complete;
				}
				else
					xStorable->storeToURL( aURL.Complete, fillArgsForStoring_Impl( uno::Reference< io::XOutputStream >() ) );
			}
		}

		hr = S_OK;
	}
	catch( uno::Exception& )
	{
	}

	return hr;
}

STDMETHODIMP EmbedDocument_Impl::SaveCompleted( LPCOLESTR pszFileName )
{
	// the different file name would mean error here
	m_aFileName = ::rtl::OUString( reinterpret_cast<const sal_Unicode*>(pszFileName) );
	return S_OK;
}

STDMETHODIMP EmbedDocument_Impl::GetCurFile( LPOLESTR *ppszFileName )
{
	CComPtr<IMalloc> pMalloc;

	HRESULT hr = CoGetMalloc( 1, &pMalloc );
	if ( FAILED( hr ) || !pMalloc ) return E_FAIL;

	*ppszFileName = (LPOLESTR)( pMalloc->Alloc( sizeof( sal_Unicode ) * ( m_aFileName.getLength() + 1 ) ) );
	wcsncpy( *ppszFileName, reinterpret_cast<LPCWSTR>(m_aFileName.getStr()), m_aFileName.getLength() + 1 );

	return m_aFileName.getLength() ? S_OK : S_FALSE;
}

// ===============================================

LockedEmbedDocument_Impl EmbeddedDocumentInstanceAccess_Impl::GetEmbedDocument()
{
	::osl::MutexGuard aGuard( m_aMutex );
	return LockedEmbedDocument_Impl( m_pEmbedDocument );
}

void EmbeddedDocumentInstanceAccess_Impl::ClearEmbedDocument()
{
	::osl::MutexGuard aGuard( m_aMutex );
	m_pEmbedDocument = NULL;
}

// ===============================================

LockedEmbedDocument_Impl::LockedEmbedDocument_Impl()
: m_pEmbedDocument( NULL )
{}

LockedEmbedDocument_Impl::LockedEmbedDocument_Impl( EmbedDocument_Impl* pEmbedDocument )
: m_pEmbedDocument( pEmbedDocument )
{
    if ( m_pEmbedDocument )
        m_pEmbedDocument->AddRef();
}

LockedEmbedDocument_Impl::LockedEmbedDocument_Impl( const LockedEmbedDocument_Impl& aDocLock )
: m_pEmbedDocument( aDocLock.m_pEmbedDocument )
{
    if ( m_pEmbedDocument )
        m_pEmbedDocument->AddRef();
}

LockedEmbedDocument_Impl& LockedEmbedDocument_Impl::operator=( const LockedEmbedDocument_Impl& aDocLock )
{
    if ( m_pEmbedDocument )
        m_pEmbedDocument->Release();

    m_pEmbedDocument = aDocLock.m_pEmbedDocument;
    if ( m_pEmbedDocument )
        m_pEmbedDocument->AddRef();

    return *this;
}

LockedEmbedDocument_Impl::~LockedEmbedDocument_Impl()
{
    if ( m_pEmbedDocument )
        m_pEmbedDocument->Release();
}

void LockedEmbedDocument_Impl::ExecuteMethod( sal_Int16 nId )
{
    if ( m_pEmbedDocument )
    {
        if ( nId == OLESERV_SAVEOBJECT )
            m_pEmbedDocument->SaveObject();
        else if ( nId == OLESERV_CLOSE )
            m_pEmbedDocument->Close( 0 );
        else if ( nId == OLESERV_NOTIFY )
            m_pEmbedDocument->notify();
        else if ( nId == OLESERV_NOTIFYCLOSING )
            m_pEmbedDocument->OLENotifyClosing();
        else if ( nId == OLESERV_SHOWOBJECT )
            m_pEmbedDocument->ShowObject();
        else if ( nId == OLESERV_DEACTIVATE )
            m_pEmbedDocument->Deactivate();
    }
}

// Fix strange warnings about some 
// ATL::CAxHostWindow::QueryInterface|AddRef|Releae functions.
// warning C4505: 'xxx' : unreferenced local function has been removed
#if defined(_MSC_VER)
#pragma warning(disable: 4505)
#endif

