/**************************************************************
 * 
 * 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_svx.hxx"
#include <tools/debug.hxx>
#include <tools/diagnose_ex.h>
#include <com/sun/star/xml/sax/InputSource.hpp>
#include <com/sun/star/xml/sax/XParser.hpp>
#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/xml/sax/XDocumentHandler.hpp>
#include <com/sun/star/lang/XComponent.hpp>
#include <com/sun/star/io/XActiveDataSource.hpp>
#include <com/sun/star/xml/sax/SAXParseException.hpp>
#include <com/sun/star/io/XOutputStream.hpp>
#include <com/sun/star/document/XFilter.hpp>
#include <com/sun/star/document/XExporter.hpp>
#include <com/sun/star/document/XImporter.hpp>
#include <comphelper/processfactory.hxx>
#include <unotools/streamwrap.hxx>
#include <sot/storage.hxx>
#include <svx/svdmodel.hxx>
#include <svx/xmleohlp.hxx>
#include <svx/xmlgrhlp.hxx>

#include <svx/unomodel.hxx>

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

sal_Bool SvxDrawingLayerExport( SdrModel* pModel, const uno::Reference<io::XOutputStream>& xOut, const Reference< lang::XComponent >& xComponent )
{
	return SvxDrawingLayerExport( pModel, xOut, xComponent, "com.sun.star.comp.DrawingLayer.XMLExporter" );
}

sal_Bool SvxDrawingLayerExport( SdrModel* pModel, const uno::Reference<io::XOutputStream>& xOut, const Reference< lang::XComponent >& xComponent, const char* pExportService )
{
	sal_Bool bDocRet = xOut.is();

	Reference< document::XGraphicObjectResolver > xGraphicResolver;
	SvXMLGraphicHelper *pGraphicHelper = 0;

	Reference< document::XEmbeddedObjectResolver > xObjectResolver;
	SvXMLEmbeddedObjectHelper *pObjectHelper = 0;

    Reference< lang::XComponent > xSourceDoc( xComponent );
	try
	{
		if( !xSourceDoc.is() )
		{
			xSourceDoc = new SvxUnoDrawingModel( pModel );
			pModel->setUnoModel( Reference< XInterface >::query( xSourceDoc ) );
		}

		uno::Reference< lang::XMultiServiceFactory> xServiceFactory( ::comphelper::getProcessServiceFactory() );
		if( !xServiceFactory.is() )
		{
			DBG_ERROR( "got no service manager" );
			bDocRet = sal_False;
		}

		if( bDocRet )
		{
			uno::Reference< uno::XInterface > xWriter( xServiceFactory->createInstance( OUString( RTL_CONSTASCII_USTRINGPARAM( "com.sun.star.xml.sax.Writer" ) ) ) );
			if( !xWriter.is() )
			{
				DBG_ERROR( "com.sun.star.xml.sax.Writer service missing" );
				bDocRet = sal_False;
			}

            ::comphelper::IEmbeddedHelper *pPersist = pModel->GetPersist();
			if( pPersist )
			{
				pObjectHelper = SvXMLEmbeddedObjectHelper::Create( *pPersist, EMBEDDEDOBJECTHELPER_MODE_WRITE );
				xObjectResolver = pObjectHelper;
            }

			pGraphicHelper = SvXMLGraphicHelper::Create( GRAPHICHELPER_MODE_WRITE );
			xGraphicResolver = pGraphicHelper;

			if( bDocRet )
			{
				uno::Reference<xml::sax::XDocumentHandler>	xHandler( xWriter, uno::UNO_QUERY );

				// doc export
				uno::Reference< io::XActiveDataSource > xDocSrc( xWriter, uno::UNO_QUERY );
				xDocSrc->setOutputStream( xOut );

				uno::Sequence< uno::Any > aArgs( xObjectResolver.is() ? 3 : 2 );
				aArgs[0] <<= xHandler;
				aArgs[1] <<= xGraphicResolver;
				if( xObjectResolver.is() )
					aArgs[2] <<= xObjectResolver;

				uno::Reference< document::XFilter > xFilter( xServiceFactory->createInstanceWithArguments( OUString::createFromAscii( pExportService ), aArgs ), uno::UNO_QUERY );
				if( !xFilter.is() )
				{
					DBG_ERROR( "com.sun.star.comp.Draw.XMLExporter service missing" );
					bDocRet = sal_False;
				}

				if( bDocRet )
				{
					uno::Reference< document::XExporter > xExporter( xFilter, uno::UNO_QUERY );
					if( xExporter.is() )
					{
						xExporter->setSourceDocument( xSourceDoc );

						uno::Sequence< beans::PropertyValue > aDescriptor( 0 );
						bDocRet = xFilter->filter( aDescriptor );
					}
				}
			}
		}
	}
	catch(uno::Exception e)
	{
        DBG_UNHANDLED_EXCEPTION();
		bDocRet = sal_False;
	}

	if( pGraphicHelper )
		SvXMLGraphicHelper::Destroy( pGraphicHelper );
	xGraphicResolver = 0;

	if( pObjectHelper )
	    SvXMLEmbeddedObjectHelper::Destroy( pObjectHelper );
	xObjectResolver = 0;

	return bDocRet;
}

sal_Bool SvxDrawingLayerExport( SdrModel* pModel, const uno::Reference<io::XOutputStream>& xOut )
{
	Reference< lang::XComponent > xComponent;
	return SvxDrawingLayerExport( pModel, xOut, xComponent );
}

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

sal_Bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStream>& xInputStream, const Reference< lang::XComponent >& xComponent )
{
	return SvxDrawingLayerImport( pModel, xInputStream, xComponent, "com.sun.star.comp.Draw.XMLOasisImporter" );
}

sal_Bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStream>& xInputStream, const Reference< lang::XComponent >& xComponent, const char* pImportService  )
{
	sal_uInt32	nRet = 0;

	Reference< document::XGraphicObjectResolver > xGraphicResolver;
	SvXMLGraphicHelper *pGraphicHelper = 0;

	Reference< document::XEmbeddedObjectResolver > xObjectResolver;
	SvXMLEmbeddedObjectHelper *pObjectHelper = 0;

    Reference< lang::XComponent > xTargetDocument( xComponent );
	if( !xTargetDocument.is() )
	{
		xTargetDocument = new SvxUnoDrawingModel( pModel );
		pModel->setUnoModel( Reference< XInterface >::query( xTargetDocument ) );
	}

	Reference< frame::XModel > xTargetModel( xTargetDocument, UNO_QUERY );

	try
	{
		// Get service factory
		Reference< lang::XMultiServiceFactory > xServiceFactory = comphelper::getProcessServiceFactory();
		DBG_ASSERT( xServiceFactory.is(), "XMLReader::Read: got no service manager" );

		if( !xServiceFactory.is() )
			nRet = 1;

		if( 0 == nRet )
		{
            if ( xTargetModel.is() )
			    xTargetModel->lockControllers();

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

			pGraphicHelper = SvXMLGraphicHelper::Create( GRAPHICHELPER_MODE_READ );
			xGraphicResolver = pGraphicHelper;

            ::comphelper::IEmbeddedHelper *pPersist = pModel->GetPersist();
			if( pPersist )
			{
				pObjectHelper = SvXMLEmbeddedObjectHelper::Create(
											*pPersist,
											EMBEDDEDOBJECTHELPER_MODE_READ );
				xObjectResolver = pObjectHelper;
            }
		}

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

		if( 0 == nRet )
		{

			// parse
			// prepare ParserInputSrouce
			xml::sax::InputSource aParserInput;
			aParserInput.aInputStream = xInputStream;

			// get parser
			Reference< xml::sax::XParser > xParser( xServiceFactory->createInstance( OUString::createFromAscii("com.sun.star.xml.sax.Parser") ), UNO_QUERY );
			DBG_ASSERT( xParser.is(), "Can't create parser" );

			// prepare filter arguments
			Sequence<Any> aFilterArgs( 2 );
			Any *pArgs = aFilterArgs.getArray();
			*pArgs++ <<= xGraphicResolver;
			*pArgs++ <<= xObjectResolver;

			// get filter
			Reference< xml::sax::XDocumentHandler > xFilter( xServiceFactory->createInstanceWithArguments( OUString::createFromAscii( pImportService ), aFilterArgs), UNO_QUERY );
			DBG_ASSERT( xFilter.is(), "Can't instantiate filter component." );

            nRet = 1;
			if( xParser.is() && xFilter.is() )
			{
				// connect parser and filter
				xParser->setDocumentHandler( xFilter );

				// connect model and filter
				uno::Reference < document::XImporter > xImporter( xFilter, UNO_QUERY );
				xImporter->setTargetDocument( xTargetDocument );

				// finally, parser the stream
				xParser->parseStream( aParserInput );

                nRet = 0;
			}
		}
	}
	catch( uno::Exception& r )
	{
        DBG_UNHANDLED_EXCEPTION();
	}

	if( pGraphicHelper )
		SvXMLGraphicHelper::Destroy( pGraphicHelper );
	xGraphicResolver = 0;

	if( pObjectHelper )
		SvXMLEmbeddedObjectHelper::Destroy( pObjectHelper );
	xObjectResolver = 0;

	if ( xTargetModel.is() )
		xTargetModel->unlockControllers();

	return nRet == 0;
}

sal_Bool SvxDrawingLayerImport( SdrModel* pModel, const uno::Reference<io::XInputStream>& xInputStream )
{
	Reference< lang::XComponent > xComponent;
	return SvxDrawingLayerImport( pModel, xInputStream, xComponent );
}