/**************************************************************
 *
 * 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_xmlscript.hxx"

#include <com/sun/star/lang/XMultiServiceFactory.hpp>
#include <com/sun/star/io/XActiveDataSource.hpp>
#include <com/sun/star/xml/sax/XParser.hpp>

#include <comphelper/processfactory.hxx>
#include <cppuhelper/implbase1.hxx>
#include <xmlscript/xml_helper.hxx>
#include <xmlscript/xmldlg_imexp.hxx>


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

namespace xmlscript
{

//==================================================================================================
class InputStreamProvider
	: public ::cppu::WeakImplHelper1< io::XInputStreamProvider >
{
	ByteSequence _bytes;

public:
	inline InputStreamProvider( ByteSequence const & rBytes )
		: _bytes( rBytes )
		{}

	// XInputStreamProvider
    virtual Reference< io::XInputStream > SAL_CALL createInputStream()
		throw (RuntimeException);
};
//__________________________________________________________________________________________________
Reference< io::XInputStream > InputStreamProvider::createInputStream()
	throw (RuntimeException)
{
	return ::xmlscript::createInputStream( _bytes );
}

//==================================================================================================
Reference< io::XInputStreamProvider > SAL_CALL exportDialogModel(
    Reference< container::XNameContainer > const & xDialogModel,
    Reference< XComponentContext > const & xContext )
	SAL_THROW( (Exception) )
{
	Reference< lang::XMultiComponentFactory > xSMgr( xContext->getServiceManager() );
	if (! xSMgr.is())
	{
		throw RuntimeException(
			OUString( RTL_CONSTASCII_USTRINGPARAM("no service manager available!") ),
			Reference< XInterface >() );
	}

	Reference< xml::sax::XExtendedDocumentHandler > xHandler( xSMgr->createInstanceWithContext(
		OUString( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.xml.sax.Writer") ), xContext ), UNO_QUERY );
	OSL_ASSERT( xHandler.is() );
	if (! xHandler.is())
	{
		throw RuntimeException(
			OUString( RTL_CONSTASCII_USTRINGPARAM("could not create sax-writer component!") ),
			Reference< XInterface >() );
	}

	ByteSequence aBytes;

	Reference< io::XActiveDataSource > xSource( xHandler, UNO_QUERY );
	xSource->setOutputStream( createOutputStream( &aBytes ) );
	exportDialogModel( xHandler, xDialogModel );

	return new InputStreamProvider( aBytes );
}

//==================================================================================================
void SAL_CALL importDialogModel(
	Reference< io::XInputStream > xInput,
	Reference< container::XNameContainer > const & xDialogModel,
    Reference< XComponentContext > const & xContext )
	SAL_THROW( (Exception) )
{
	Reference< lang::XMultiComponentFactory > xSMgr( xContext->getServiceManager() );
	if (! xSMgr.is())
	{
		throw RuntimeException(
			OUString( RTL_CONSTASCII_USTRINGPARAM("no service manager available!") ),
			Reference< XInterface >() );
	}

	Reference< xml::sax::XParser > xParser( xSMgr->createInstanceWithContext(
		OUString( RTL_CONSTASCII_USTRINGPARAM("com.sun.star.xml.sax.Parser") ), xContext ), UNO_QUERY );
	OSL_ASSERT( xParser.is() );
	if (! xParser.is())
	{
		throw RuntimeException(
			OUString( RTL_CONSTASCII_USTRINGPARAM("could not create sax-parser component!") ),
			Reference< XInterface >() );
	}

	// error handler, entity resolver omitted for this helper function
	xParser->setDocumentHandler( importDialogModel( xDialogModel, xContext ) );

	xml::sax::InputSource source;
	source.aInputStream = xInput;
	source.sSystemId = OUString( RTL_CONSTASCII_USTRINGPARAM("virtual file") );

	xParser->parseStream( source );
}

}