core/ole/ndole.cxx

/**************************************************************
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 *
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_sw.hxx"
#include <com/sun/star/embed/NoVisualAreaSizeException.hpp>
#include <com/sun/star/container/XChild.hpp>
#include <com/sun/star/embed/XEmbedPersist.hpp>
#include <com/sun/star/embed/XLinkageSupport.hpp>
#include <com/sun/star/embed/Aspects.hpp>
#include <com/sun/star/embed/EmbedMisc.hpp>
#include <com/sun/star/embed/EmbedStates.hpp>
#include <com/sun/star/util/XCloseable.hpp>
#include <com/sun/star/util/XModifiable.hpp>
#include <com/sun/star/document/XEventBroadcaster.hpp>
#include <com/sun/star/chart2/XChartDocument.hpp>	// #i119941
#include <cppuhelper/implbase1.hxx>

#include <cppuhelper/implbase2.hxx>
#include <toolkit/helper/vclunohelper.hxx>
#include <hintids.hxx>
#include <tools/urlobj.hxx>
#include <sfx2/docfile.hxx>
#include <sfx2/app.hxx>
#include <sfx2/linkmgr.hxx>
#include <unotools/configitem.hxx>
#ifndef _OUTDEV_HXX //autogen
#include <vcl/outdev.hxx>
#endif
#include <fmtanchr.hxx>
#include <frmfmt.hxx>
#include <doc.hxx>
#include <docsh.hxx>
#include <pam.hxx>
#include <section.hxx>
#include <cntfrm.hxx>
#include <frmatr.hxx>
#ifndef _DOCSH_HXX
#include <docsh.hxx>
#endif
#include <ndole.hxx>

#include <comphelper/classids.hxx>
#include <vcl/graph.hxx>
#include <sot/formats.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <svtools/filter.hxx>
#ifndef _COMCORE_HRC
#include <comcore.hrc>
#endif

using rtl::OUString;
using namespace utl;
using namespace com::sun::star::uno;
using namespace com::sun::star;

class SwOLELRUCache : private SvPtrarr, private utl::ConfigItem
{
	sal_uInt16 nLRU_InitSize;
	sal_Bool bInUnload;
    uno::Sequence< rtl::OUString > GetPropertyNames();

public:
	SwOLELRUCache();

    virtual void Notify( const uno::Sequence<
								rtl::OUString>& aPropertyNames );
	virtual void Commit();
	void Load();

	void SetInUnload( sal_Bool bFlag ) 	{ bInUnload = bFlag; }
	using SvPtrarr::Count;

	void InsertObj( SwOLEObj& rObj );
	void RemoveObj( SwOLEObj& rObj );

	void RemovePtr( SwOLEObj* pObj )
	{
		sal_uInt16 nPos = SvPtrarr::GetPos( pObj );
		if( USHRT_MAX != nPos )
			SvPtrarr::Remove( nPos );
	}
};

SwOLELRUCache* pOLELRU_Cache = 0;

class SwOLEListener_Impl : public ::cppu::WeakImplHelper1< embed::XStateChangeListener >
{
    SwOLEObj* mpObj;
public:
    SwOLEListener_Impl( SwOLEObj* pObj );
    void Release();
    virtual void SAL_CALL changingState( const lang::EventObject& aEvent, ::sal_Int32 nOldState, ::sal_Int32 nNewState ) throw (embed::WrongStateException, uno::RuntimeException);
    virtual void SAL_CALL stateChanged( const lang::EventObject& aEvent, ::sal_Int32 nOldState, ::sal_Int32 nNewState ) throw (uno::RuntimeException);
    virtual void SAL_CALL disposing( const lang::EventObject& aEvent ) throw (uno::RuntimeException);
};

SwOLEListener_Impl::SwOLEListener_Impl( SwOLEObj* pObj )
: mpObj( pObj )
{
    if ( mpObj->IsOleRef() && mpObj->GetOleRef()->getCurrentState() == embed::EmbedStates::RUNNING )
    {
        pOLELRU_Cache->InsertObj( *mpObj );
    }
}

void SAL_CALL SwOLEListener_Impl::changingState( const lang::EventObject&, ::sal_Int32 , ::sal_Int32 ) throw (embed::WrongStateException, uno::RuntimeException)
{
}

void SAL_CALL SwOLEListener_Impl::stateChanged( const lang::EventObject&, ::sal_Int32 nOldState, ::sal_Int32 nNewState ) throw (uno::RuntimeException)
{
    if ( mpObj && nOldState == embed::EmbedStates::LOADED && nNewState == embed::EmbedStates::RUNNING )
    {
        if( !pOLELRU_Cache )
            pOLELRU_Cache = new SwOLELRUCache;
        pOLELRU_Cache->InsertObj( *mpObj );
    }
    else if ( mpObj && nNewState == embed::EmbedStates::LOADED && nOldState == embed::EmbedStates::RUNNING )
    {
        if ( pOLELRU_Cache )
            pOLELRU_Cache->RemoveObj( *mpObj );
    }
}

void SwOLEListener_Impl::Release()
{
    if ( mpObj && pOLELRU_Cache )
        pOLELRU_Cache->RemoveObj( *mpObj );
    mpObj=0;
    release();
}

void SAL_CALL SwOLEListener_Impl::disposing( const lang::EventObject& ) throw (uno::RuntimeException)
{
    if ( mpObj && pOLELRU_Cache )
        pOLELRU_Cache->RemoveObj( *mpObj );
}

// --------------------
// SwEmbedObjectLink
// --------------------
// TODO/LATER: actually SwEmbedObjectLink should be used here, but because different objects are used to control
//             embedded object different link objects with the same functionality had to be implemented

class SwEmbedObjectLink : public sfx2::SvBaseLink
{
	SwOLENode*			pOleNode;

public:
						SwEmbedObjectLink(SwOLENode* pNode);
	virtual				~SwEmbedObjectLink();

	virtual void		Closed();
	virtual void		DataChanged( const String& rMimeType,
                                const uno::Any & rValue );

	sal_Bool			Connect() { return GetRealObject() != NULL; }
};

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

SwEmbedObjectLink::SwEmbedObjectLink(SwOLENode* pNode):
	::sfx2::SvBaseLink( ::sfx2::LINKUPDATE_ONCALL, SOT_FORMATSTR_ID_SVXB ),
	pOleNode(pNode)
{
	SetSynchron( sal_False );
}

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

SwEmbedObjectLink::~SwEmbedObjectLink()
{
}

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

void SwEmbedObjectLink::DataChanged( const String& ,
                                const uno::Any & )
{
	if ( !pOleNode->UpdateLinkURL_Impl() )
	{
		// the link URL was not changed
		uno::Reference< embed::XEmbeddedObject > xObject = pOleNode->GetOLEObj().GetOleRef();
		OSL_ENSURE( xObject.is(), "The object must exist always!\n" );
		if ( xObject.is() )
		{
			// let the object reload the link
			// TODO/LATER: reload call could be used for this case

			try
			{
				sal_Int32 nState = xObject->getCurrentState();
				if ( nState != embed::EmbedStates::LOADED )
				{
					// in some cases the linked file probably is not locked so it could be changed
					xObject->changeState( embed::EmbedStates::LOADED );
					xObject->changeState( nState );
				}
			}
			catch ( uno::Exception& )
			{
			}
		}
	}

	pOleNode->GetNewReplacement();
	// Initiate repainting
	// pObj->SetChanged();
}

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

void SwEmbedObjectLink::Closed()
{
	pOleNode->BreakFileLink_Impl();
	SvBaseLink::Closed();
}


// --------------------
// SwOLENode
// --------------------

SwOLENode::SwOLENode( const SwNodeIndex &rWhere,
                    const svt::EmbeddedObjectRef& xObj,
					SwGrfFmtColl *pGrfColl,
					SwAttrSet* pAutoAttr ) :
	SwNoTxtNode( rWhere, ND_OLENODE, pGrfColl, pAutoAttr ),
    aOLEObj( xObj ),
    pGraphic(0),
	bOLESizeInvalid( sal_False ),
	mpObjectLink( NULL )
{
	aOLEObj.SetNode( this );
}

SwOLENode::SwOLENode( const SwNodeIndex &rWhere,
					const String &rString,
					sal_Int64 nAspect,
					SwGrfFmtColl *pGrfColl,
					SwAttrSet* pAutoAttr ) :
	SwNoTxtNode( rWhere, ND_OLENODE, pGrfColl, pAutoAttr ),
	aOLEObj( rString, nAspect ),
    pGraphic(0),
	bOLESizeInvalid( sal_False ),
	mpObjectLink( NULL )
{
	aOLEObj.SetNode( this );
}

SwOLENode::~SwOLENode()
{
	DisconnectFileLink_Impl();
    delete pGraphic;
}

Graphic* SwOLENode::GetGraphic()
{
    if ( aOLEObj.GetOleRef().is() )
        return aOLEObj.xOLERef.GetGraphic();
    return pGraphic;
}

Graphic* SwOLENode::GetHCGraphic()
{
	return aOLEObj.xOLERef.GetHCGraphic();
}

SwCntntNode *SwOLENode::SplitCntntNode( const SwPosition & )
{
	// OLE-Objecte vervielfaeltigen ??
	ASSERT( sal_False, "OleNode: can't split." );
	return this;
}

// Laden eines in den Undo-Bereich verschobenen OLE-Objekts

sal_Bool SwOLENode::RestorePersistentData()
{
    DBG_ASSERT( aOLEObj.GetOleRef().is(), "No object to restore!" );
    if ( aOLEObj.xOLERef.is() )
    {
		// Falls bereits eine SvPersist-Instanz existiert, nehmen wir diese
        SfxObjectShell* p = GetDoc()->GetPersist();
        if( !p )
        {
            // TODO/LATER: reicht hier nicht ein EmbeddedObjectContainer? Was passiert mit
            // diesem Dokument?
			ASSERT( sal_False, "why is a DocShell created here?" );
            p = new SwDocShell( GetDoc(), SFX_CREATE_MODE_INTERNAL );
            p->DoInitNew( NULL );
        }

        uno::Reference < container::XChild > xChild( aOLEObj.xOLERef.GetObject(), uno::UNO_QUERY );
        if ( xChild.is() )
            xChild->setParent( p->GetModel() );

        DBG_ASSERT( aOLEObj.aName.Len(), "No object name!" );
        ::rtl::OUString aObjName;
        if ( !p->GetEmbeddedObjectContainer().InsertEmbeddedObject( aOLEObj.xOLERef.GetObject(), aObjName ) )
        {
            if ( xChild.is() )
                xChild->setParent( 0 );
            DBG_ERROR( "InsertObject failed" );
        }
        else
        {
            aOLEObj.aName = aObjName;
            aOLEObj.xOLERef.AssignToContainer( &p->GetEmbeddedObjectContainer(), aObjName );
			CheckFileLink_Impl();
        }
    }

	return sal_True;
}

// OLE object is transported into UNDO area
sal_Bool SwOLENode::SavePersistentData()
{
    if( aOLEObj.xOLERef.is() )
	{
		comphelper::EmbeddedObjectContainer* pCnt = aOLEObj.xOLERef.GetContainer();

#if OSL_DEBUG_LEVEL > 0
        SfxObjectShell* p = GetDoc()->GetPersist();
        DBG_ASSERT( p, "No document!" );
        if( p )
        {
            comphelper::EmbeddedObjectContainer& rCnt = p->GetEmbeddedObjectContainer();
			OSL_ENSURE( !pCnt || &rCnt == pCnt, "The helper is assigned to unexpected container!\n" );
        }
#endif

		if ( pCnt && pCnt->HasEmbeddedObject( aOLEObj.aName ) )
		{
			uno::Reference < container::XChild > xChild( aOLEObj.xOLERef.GetObject(), uno::UNO_QUERY );
			if ( xChild.is() )
				xChild->setParent( 0 );

          // pCnt->RemoveEmbeddedObject( aOLEObj.aName, sal_False );
           /* #i119941: When cut or move the chart, SwUndoFlyBase::DelFly will call SaveSection to store the comtent to strorage.
           In this step, chart filter functions will be called. And chart filter will call chart core functions to create the chart again.
           Then chart core function will call the class ExplicitCategoryProvider to create data source.
           In this step, when SW data source provider create the data source, it will create a new SwFlyFrm.
           But later in SwUndoFlyBase::DelFly, it will clear anchor related attributes of SwFlyFrm. Then finally null pointer occur.
           Resolution:
           In pCnt->RemoveEmbeddedObject in SaveSection process of table chart, only remove the object from the object container,
           without removing it's storage and graphic stream. The chart already removed from formatter.> */
           sal_Bool	bChartWithInternalProvider = sal_False;
           sal_Bool	bKeepObjectToTempStorage = sal_True;
           uno::Reference < embed::XEmbeddedObject > xIP = GetOLEObj().GetOleRef();
           if ( svt::EmbeddedObjectRef::TryRunningState( xIP ) )
           {
               uno::Reference< chart2::XChartDocument > xChart( xIP->getComponent(), UNO_QUERY );
               if ( xChart.is() && xChart->hasInternalDataProvider() )
                   bChartWithInternalProvider = sal_True;
           }

           if ( IsChart() && sChartTblName.Len() && !bChartWithInternalProvider )
               bKeepObjectToTempStorage = sal_False;
           pCnt->RemoveEmbeddedObject( aOLEObj.aName, sal_False, bKeepObjectToTempStorage );
           // modify end


			// TODO/LATER: aOLEObj.aName has no meaning here, since the undo container contains the object
			// by different name, in future it might makes sence that the name is transported here.
            aOLEObj.xOLERef.AssignToContainer( 0, aOLEObj.aName );
            try
            {
                // "unload" object
                aOLEObj.xOLERef->changeState( embed::EmbedStates::LOADED );
            }
            catch ( uno::Exception& )
            {
            }
		}
	}

	DisconnectFileLink_Impl();

	return sal_True;
}


SwOLENode * SwNodes::MakeOLENode( const SwNodeIndex & rWhere,
                    const svt::EmbeddedObjectRef& xObj,
									SwGrfFmtColl* pGrfColl,
									SwAttrSet* pAutoAttr )
{
	ASSERT( pGrfColl,"SwNodes::MakeOLENode: Formatpointer ist 0." );

	SwOLENode *pNode =
        new SwOLENode( rWhere, xObj, pGrfColl, pAutoAttr );

    // set parent if XChild is supported
    //!! needed to supply Math objects with a valid reference device
    uno::Reference< container::XChild > xChild( pNode->GetOLEObj().GetObject().GetObject(), UNO_QUERY );
    if (xChild.is())
    {
        SwDocShell *pDocSh = GetDoc()->GetDocShell();
        if (pDocSh)
            xChild->setParent( pDocSh->GetModel() );
    }

    return pNode;
}


SwOLENode * SwNodes::MakeOLENode( const SwNodeIndex & rWhere,
	const String &rName, sal_Int64 nAspect, SwGrfFmtColl* pGrfColl, SwAttrSet* pAutoAttr )
{
	ASSERT( pGrfColl,"SwNodes::MakeOLENode: Formatpointer ist 0." );

	SwOLENode *pNode =
		new SwOLENode( rWhere, rName, nAspect, pGrfColl, pAutoAttr );

    // set parent if XChild is supported
    //!! needed to supply Math objects with a valid reference device
    uno::Reference< container::XChild > xChild( pNode->GetOLEObj().GetObject().GetObject(), UNO_QUERY );
    if (xChild.is())
    {
        SwDocShell *pDocSh= GetDoc()->GetDocShell();
        if (pDocSh)
            xChild->setParent( pDocSh->GetModel() );
    }

    return pNode;
}

Size SwOLENode::GetTwipSize() const
{
	MapMode aMapMode( MAP_TWIP );
	return ((SwOLENode*)this)->aOLEObj.GetObject().GetSize( &aMapMode );
}

SwCntntNode* SwOLENode::MakeCopy( SwDoc* pDoc, const SwNodeIndex& rIdx ) const
{
	// Falls bereits eine SvPersist-Instanz existiert, nehmen wir diese
    SfxObjectShell* pPersistShell = pDoc->GetPersist();
	if( !pPersistShell )
	{
        // TODO/LATER: is EmbeddedObjectContainer not enough?
        // the created document will be closed by pDoc ( should use SfxObjectShellLock )
		pPersistShell = new SwDocShell( pDoc, SFX_CREATE_MODE_INTERNAL );
		pDoc->SetTmpDocShell( pPersistShell );
		pPersistShell->DoInitNew( NULL );
	}

	// Wir hauen das Ding auf SvPersist-Ebene rein
    // TODO/LATER: check if using the same naming scheme for all apps works here
    ::rtl::OUString aNewName/*( Sw3Io::UniqueName( p->GetStorage(), "Obj" ) )*/;
    SfxObjectShell* pSrc = GetDoc()->GetPersist();

	pPersistShell->GetEmbeddedObjectContainer().CopyAndGetEmbeddedObject(
		pSrc->GetEmbeddedObjectContainer(),
		pSrc->GetEmbeddedObjectContainer().GetEmbeddedObject( aOLEObj.aName ),
		aNewName );

	SwOLENode* pOLENd = pDoc->GetNodes().MakeOLENode( rIdx, aNewName, GetAspect(),
									(SwGrfFmtColl*)pDoc->GetDfltGrfFmtColl(),
									(SwAttrSet*)GetpSwAttrSet() );

	pOLENd->SetChartTblName( GetChartTblName() );
    pOLENd->SetTitle( GetTitle() );
    pOLENd->SetDescription( GetDescription() );
    pOLENd->SetContour( HasContour(), HasAutomaticContour() );
	pOLENd->SetAspect( GetAspect() ); // the replacement image must be already copied

	pOLENd->SetOLESizeInvalid( sal_True );
	pDoc->SetOLEPrtNotifyPending();

	return pOLENd;
}

sal_Bool SwOLENode::IsInGlobalDocSection() const
{
	// suche den "Body Anchor"
	sal_uLong nEndExtraIdx = GetNodes().GetEndOfExtras().GetIndex();
	const SwNode* pAnchorNd = this;
	do {
		SwFrmFmt* pFlyFmt = pAnchorNd->GetFlyFmt();
		if( !pFlyFmt )
			return sal_False;

		const SwFmtAnchor& rAnchor = pFlyFmt->GetAnchor();
		if( !rAnchor.GetCntntAnchor() )
			return sal_False;

		pAnchorNd = &rAnchor.GetCntntAnchor()->nNode.GetNode();
	} while( pAnchorNd->GetIndex() < nEndExtraIdx );

	const SwSectionNode* pSectNd = pAnchorNd->FindSectionNode();
	if( !pSectNd )
		return sal_False;

	while( pSectNd )
	{
		pAnchorNd = pSectNd;
        pSectNd = pAnchorNd->StartOfSectionNode()->FindSectionNode();
	}

	// in pAnchorNd steht der zuletzt gefundene Section Node. Der muss
	// jetzt die Bedingung fuers GlobalDoc erfuellen.
	pSectNd = (SwSectionNode*)pAnchorNd;
	return FILE_LINK_SECTION == pSectNd->GetSection().GetType() &&
			pSectNd->GetIndex() > nEndExtraIdx;
}

sal_Bool SwOLENode::IsOLEObjectDeleted() const
{
	sal_Bool bRet = sal_False;
    if( aOLEObj.xOLERef.is() )
	{
        SfxObjectShell* p = GetDoc()->GetPersist();
		if( p )		// muss da sein
		{
            return !p->GetEmbeddedObjectContainer().HasEmbeddedObject( aOLEObj.aName );
            //SvInfoObjectRef aRef( p->Find( aOLEObj.aName ) );
            //if( aRef.Is() )
            //    bRet = aRef->IsDeleted();
		}
	}
	return bRet;
}

void SwOLENode::GetNewReplacement()
{
	if ( aOLEObj.xOLERef.is() )
		aOLEObj.xOLERef.UpdateReplacement();
}

sal_Bool SwOLENode::UpdateLinkURL_Impl()
{
	sal_Bool bResult = sal_False;

	if ( mpObjectLink )
	{
		String aNewLinkURL;
		GetDoc()->GetLinkManager().GetDisplayNames( mpObjectLink, 0, &aNewLinkURL, 0, 0 );
		if ( !aNewLinkURL.EqualsIgnoreCaseAscii( maLinkURL ) )
		{
			if ( !aOLEObj.xOLERef.is() )
				aOLEObj.GetOleRef();

			uno::Reference< embed::XEmbeddedObject > xObj = aOLEObj.xOLERef.GetObject();
			uno::Reference< embed::XCommonEmbedPersist > xPersObj( xObj, uno::UNO_QUERY );
			OSL_ENSURE( xPersObj.is(), "The object must exist!\n" );
    		if ( xPersObj.is() )
			{
				try
				{
					sal_Int32 nCurState = xObj->getCurrentState();
					if ( nCurState != embed::EmbedStates::LOADED )
						xObj->changeState( embed::EmbedStates::LOADED );

					// TODO/LATER: there should be possible to get current mediadescriptor settings from the object
					uno::Sequence< beans::PropertyValue > aArgs( 1 );
					aArgs[0].Name = ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM( "URL" ) );
					aArgs[0].Value <<= ::rtl::OUString( aNewLinkURL );
					xPersObj->reload( aArgs, uno::Sequence< beans::PropertyValue >() );

					maLinkURL = aNewLinkURL;
					bResult = sal_True;

					if ( nCurState != embed::EmbedStates::LOADED )
						xObj->changeState( nCurState );
				}
				catch( uno::Exception& )
				{}
			}

			if ( !bResult )
			{
				// TODO/LATER: return the old name to the link manager, is it possible?
			}
		}
	}

	return bResult;
}

void SwOLENode::BreakFileLink_Impl()
{
	SfxObjectShell* pPers = GetDoc()->GetPersist();

	if ( pPers )
	{
		uno::Reference< embed::XStorage > xStorage = pPers->GetStorage();
		if ( xStorage.is() )
		{
			try
			{
				uno::Reference< embed::XLinkageSupport > xLinkSupport( aOLEObj.GetOleRef(), uno::UNO_QUERY_THROW );
				xLinkSupport->breakLink( xStorage, aOLEObj.GetCurrentPersistName() );
				DisconnectFileLink_Impl();
				maLinkURL = String();
			}
			catch( uno::Exception& )
			{
			}
		}
	}
}

void SwOLENode::DisconnectFileLink_Impl()
{
	if ( mpObjectLink )
	{
        GetDoc()->GetLinkManager().Remove( mpObjectLink );
		mpObjectLink = NULL;
	}
}

void SwOLENode::CheckFileLink_Impl()
{
	if ( aOLEObj.xOLERef.GetObject().is() && !mpObjectLink )
	{
		try
		{
			uno::Reference< embed::XLinkageSupport > xLinkSupport( aOLEObj.xOLERef.GetObject(), uno::UNO_QUERY_THROW );
			if ( xLinkSupport->isLink() )
			{
				String aLinkURL = xLinkSupport->getLinkURL();
				if ( aLinkURL.Len() )
				{
					// this is a file link so the model link manager should handle it
					mpObjectLink = new SwEmbedObjectLink( this );
					maLinkURL = aLinkURL;
					GetDoc()->GetLinkManager().InsertFileLink( *mpObjectLink, OBJECT_CLIENT_OLE, aLinkURL, NULL, NULL );
					mpObjectLink->Connect();
				}
			}
		}
		catch( uno::Exception& )
		{
		}
	}
}

// --> OD 2009-03-05 #i99665#
bool SwOLENode::IsChart() const
{
    bool bIsChart( false );

    const uno::Reference< embed::XEmbeddedObject > xEmbObj =
                            const_cast<SwOLEObj&>(GetOLEObj()).GetOleRef();
    if ( xEmbObj.is() )
    {
        SvGlobalName aClassID( xEmbObj->getClassID() );
        bIsChart = SotExchange::IsChart( aClassID );
    }

    return bIsChart;
}
// <--

SwOLEObj::SwOLEObj( const svt::EmbeddedObjectRef& xObj ) :
    pOLENd( 0 ),
    pListener( 0 ),
    xOLERef( xObj )
{
    xOLERef.Lock( sal_True );
    if ( xObj.is() )
    {
        pListener = new SwOLEListener_Impl( this );
        pListener->acquire();
        xObj->addStateChangeListener( pListener );
    }
}


SwOLEObj::SwOLEObj( const String &rString, sal_Int64 nAspect ) :
	pOLENd( 0 ),
    pListener( 0 ),
    aName( rString )
{
    xOLERef.Lock( sal_True );
	xOLERef.SetViewAspect( nAspect );
}


SwOLEObj::~SwOLEObj()
{
    if( pListener )
    {
        if ( xOLERef.is() )
            xOLERef->removeStateChangeListener( pListener );
        pListener->Release();
    }

    if( pOLENd && !pOLENd->GetDoc()->IsInDtor() )
	{
        // if the model is not currently in destruction it means that this object should be removed from the model
		comphelper::EmbeddedObjectContainer* pCnt = xOLERef.GetContainer();

#if OSL_DEBUG_LEVEL > 0
        SfxObjectShell* p = pOLENd->GetDoc()->GetPersist();
        DBG_ASSERT( p, "No document!" );
        if( p )
        {
            comphelper::EmbeddedObjectContainer& rCnt = p->GetEmbeddedObjectContainer();
			OSL_ENSURE( !pCnt || &rCnt == pCnt, "The helper is assigned to unexpected container!\n" );
        }
#endif

		if ( pCnt && pCnt->HasEmbeddedObject( aName ) )
		{
			uno::Reference < container::XChild > xChild( xOLERef.GetObject(), uno::UNO_QUERY );
			if ( xChild.is() )
				xChild->setParent( 0 );

			// not already removed by deleting the object
			xOLERef.AssignToContainer( 0, aName );

			// unlock object so that object can be closed in RemoveEmbeddedObject
			// successful closing of the object will automatically clear the reference then
			xOLERef.Lock(sal_False);

			// Always remove object from conteiner it is connected to
            try
            {
                pCnt->RemoveEmbeddedObject( aName );
            }
            catch ( uno::Exception& )
            {
            }
		}

	}

    if ( xOLERef.is() )
        // in case the object wasn't closed: release it
        // in case the object was not in the container: it's still locked, try to close
        xOLERef.Clear();
}


void SwOLEObj::SetNode( SwOLENode* pNode )
{
	pOLENd = pNode;
    if ( !aName.Len() )
	{
		SwDoc* pDoc = pNode->GetDoc();

		// Falls bereits eine SvPersist-Instanz existiert, nehmen wir diese
        SfxObjectShell* p = pDoc->GetPersist();
        if( !p )
        {
            // TODO/LATER: reicht hier nicht ein EmbeddedObjectContainer? Was passiert mit
            // diesem Dokument?
			ASSERT( sal_False, "why is a DocShell created here?" );
            p = new SwDocShell( pDoc, SFX_CREATE_MODE_INTERNAL );
            p->DoInitNew( NULL );
        }

        ::rtl::OUString aObjName;
        uno::Reference < container::XChild > xChild( xOLERef.GetObject(), uno::UNO_QUERY );
        if ( xChild.is() && xChild->getParent() != p->GetModel() )
            // it is possible that the parent was set already
            xChild->setParent( p->GetModel() );
        if (!p->GetEmbeddedObjectContainer().InsertEmbeddedObject( xOLERef.GetObject(), aObjName ) )
        {
            DBG_ERROR( "InsertObject failed" );
        if ( xChild.is() )
            xChild->setParent( 0 );
        }
        else
            xOLERef.AssignToContainer( &p->GetEmbeddedObjectContainer(), aObjName );

		( (SwOLENode*)pOLENd )->CheckFileLink_Impl(); // for this notification nonconst access is required

        aName = aObjName;
	}
}

String SwOLEObj::GetStyleString()
{
	String strStyle;
	if (xOLERef.is() && xOLERef.IsChart())
		strStyle = xOLERef.GetChartType();
	return strStyle;
}
sal_Bool SwOLEObj::IsOleRef() const
{
    return xOLERef.is();
}

const uno::Reference < embed::XEmbeddedObject > SwOLEObj::GetOleRef()
{
    if( !xOLERef.is() )
	{
        SfxObjectShell* p = pOLENd->GetDoc()->GetPersist();
		ASSERT( p, "kein SvPersist vorhanden" );

        uno::Reference < embed::XEmbeddedObject > xObj = p->GetEmbeddedObjectContainer().GetEmbeddedObject( aName );
        ASSERT( !xOLERef.is(), "rekursiver Aufruf von GetOleRef() ist nicht erlaubt" )

		if ( !xObj.is() )
		{
			//Das Teil konnte nicht geladen werden (wahrsch. Kaputt).
			Rectangle aArea;
			SwFrm *pFrm = pOLENd->getLayoutFrm(0);
			if ( pFrm )
			{
				Size aSz( pFrm->Frm().SSize() );
				const MapMode aSrc ( MAP_TWIP );
				const MapMode aDest( MAP_100TH_MM );
				aSz = OutputDevice::LogicToLogic( aSz, aSrc, aDest );
				aArea.SetSize( aSz );
			}
			else
				aArea.SetSize( Size( 5000,  5000 ) );
            // TODO/LATER: set replacement graphic for dead object
            // It looks as if it should work even without the object, because the replace will be generated automatically
            ::rtl::OUString aTmpName;
            xObj = p->GetEmbeddedObjectContainer().CreateEmbeddedObject( SvGlobalName( SO3_DUMMY_CLASSID ).GetByteSequence(), aTmpName );
		}
        // else
        {
            xOLERef.Assign( xObj, xOLERef.GetViewAspect() );
            xOLERef.AssignToContainer( &p->GetEmbeddedObjectContainer(), aName );
            pListener = new SwOLEListener_Impl( this );
            pListener->acquire();
            xObj->addStateChangeListener( pListener );
        }

		( (SwOLENode*)pOLENd )->CheckFileLink_Impl(); // for this notification nonconst access is required
	}
    else if ( xOLERef->getCurrentState() == embed::EmbedStates::RUNNING )
    {
        // move object to first position in cache
        if( !pOLELRU_Cache )
            pOLELRU_Cache = new SwOLELRUCache;
        pOLELRU_Cache->InsertObj( *this );
    }

    return xOLERef.GetObject();
}

svt::EmbeddedObjectRef& SwOLEObj::GetObject()
{
    GetOleRef();
    return xOLERef;
}

sal_Bool SwOLEObj::UnloadObject()
{
	sal_Bool bRet = sal_True;
	//Nicht notwendig im Doc DTor (MM)
    //ASSERT( pOLERef && pOLERef->Is() && 1 < (*pOLERef)->GetRefCount(),
    //        "Falscher RefCount fuers Unload" );
	if ( pOLENd )
	{
		const SwDoc* pDoc = pOLENd->GetDoc();
		bRet = UnloadObject( xOLERef.GetObject(), pDoc, xOLERef.GetViewAspect() );
	}

	return bRet;
}

sal_Bool SwOLEObj::UnloadObject( uno::Reference< embed::XEmbeddedObject > xObj, const SwDoc* pDoc, sal_Int64 nAspect )
{
	if ( !pDoc )
		return sal_False;

	sal_Bool bRet = sal_True;
   	sal_Int32 nState = xObj.is() ? xObj->getCurrentState() : embed::EmbedStates::LOADED;
   	sal_Bool bIsActive = ( nState != embed::EmbedStates::LOADED && nState != embed::EmbedStates::RUNNING );
	sal_Int64 nMiscStatus = xObj->getStatus( nAspect );

   	if( nState != embed::EmbedStates::LOADED && !pDoc->IsInDtor() && !bIsActive &&
		embed::EmbedMisc::MS_EMBED_ALWAYSRUN != ( nMiscStatus & embed::EmbedMisc::MS_EMBED_ALWAYSRUN ) &&
		embed::EmbedMisc::EMBED_ACTIVATEIMMEDIATELY != ( nMiscStatus & embed::EmbedMisc::EMBED_ACTIVATEIMMEDIATELY ) )
	{
        SfxObjectShell* p = pDoc->GetPersist();
		if( p )
		{
			if( pDoc->get(IDocumentSettingAccess::PURGE_OLE) )
			{
                try
                {
                    uno::Reference < util::XModifiable > xMod( xObj->getComponent(), uno::UNO_QUERY );
                    if( xMod.is() && xMod->isModified() )
                    {
                        uno::Reference < embed::XEmbedPersist > xPers( xObj, uno::UNO_QUERY );
                        if ( xPers.is() )
                            xPers->storeOwn();
                        else {
                            DBG_ERROR("Modified object without persistence in cache!");
                        }
                    }

                    // setting object to loaded state will remove it from cache
                    xObj->changeState( embed::EmbedStates::LOADED );
                }
                catch ( uno::Exception& )
                {
                    bRet = sal_False;
                }
			}
			else
				bRet = sal_False;
		}
	}

	return bRet;
}

String SwOLEObj::GetDescription()
{
    String aResult;
	uno::Reference< embed::XEmbeddedObject > xEmbObj = GetOleRef();
    if ( xEmbObj.is() )
    {
		SvGlobalName aClassID( xEmbObj->getClassID() );
        if ( SotExchange::IsMath( aClassID ) )
            aResult = SW_RES(STR_MATH_FORMULA);
        else if ( SotExchange::IsChart( aClassID ) )
            aResult = SW_RES(STR_CHART);
        else
            aResult = SW_RES(STR_OLE);
    }

    return aResult;
}


SwOLELRUCache::SwOLELRUCache()
	: SvPtrarr( 64, 16 ),
	utl::ConfigItem( OUString::createFromAscii( "Office.Common/Cache" )),
    nLRU_InitSize( 20 ),
    bInUnload( sal_False )
{
	EnableNotification( GetPropertyNames() );
	Load();
}

uno::Sequence< rtl::OUString > SwOLELRUCache::GetPropertyNames()
{
	Sequence< OUString > aNames( 1 );
	OUString* pNames = aNames.getArray();
	pNames[0] = OUString::createFromAscii( "Writer/OLE_Objects" );
	return aNames;
}

void SwOLELRUCache::Notify( const uno::Sequence< rtl::OUString>&  )
{
	Load();
}

void SwOLELRUCache::Commit()
{
}

void SwOLELRUCache::Load()
{
	Sequence< OUString > aNames( GetPropertyNames() );
	Sequence< Any > aValues = GetProperties( aNames );
	const Any* pValues = aValues.getConstArray();
	DBG_ASSERT( aValues.getLength() == aNames.getLength(), "GetProperties failed" );
    if( aValues.getLength() == aNames.getLength() && pValues->hasValue() )
	{
		sal_Int32 nVal = 0;
		*pValues >>= nVal;
        //if( 20 > nVal )
        //    nVal = 20;

		{
            if( nVal < nLRU_InitSize )
			{
                // size of cache has been changed
                sal_uInt16 nCount = SvPtrarr::Count();
                sal_uInt16 nPos = nCount;

                // try to remove the last entries until new maximum size is reached
                while( nCount > nVal )
				{
					SwOLEObj* pObj = (SwOLEObj*) SvPtrarr::GetObject( --nPos );
                    if ( pObj->UnloadObject() )
                        nCount--;
                    if ( !nPos )
                        break;
				}
			}
		}

		nLRU_InitSize = (sal_uInt16)nVal;
	}
}

void SwOLELRUCache::InsertObj( SwOLEObj& rObj )
{
    SwOLEObj* pObj = &rObj;
    sal_uInt16 nPos = SvPtrarr::GetPos( pObj );
    if( nPos )
    {
        // object is currently not the first in cache
        if( USHRT_MAX != nPos )
            SvPtrarr::Remove( nPos );

        SvPtrarr::Insert( pObj, 0 );

        // try to remove objects if necessary (of course not the freshly inserted one at nPos=0)
        sal_uInt16 nCount = SvPtrarr::Count();
        nPos = nCount-1;
        while( nPos && nCount > nLRU_InitSize )
        {
            pObj = (SwOLEObj*) SvPtrarr::GetObject( nPos-- );
            if ( pObj->UnloadObject() )
                nCount--;
        }
    }
}

void SwOLELRUCache::RemoveObj( SwOLEObj& rObj )
{
    sal_uInt16 nPos = SvPtrarr::GetPos( &rObj );
    if ( nPos != 0xFFFF )
        SvPtrarr::Remove( nPos );
    if( !Count() )
        DELETEZ( pOLELRU_Cache );
}