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 * Licensed to the Apache Software Foundation (ASF) under one
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 * 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
 * 
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#ifndef _XMLOFF_PROPERTYHANDLERBASE_HXX
#define _XMLOFF_PROPERTYHANDLERBASE_HXX

#include "sal/config.h"
#include "xmloff/dllapi.h"
#include <sal/types.h>

namespace com{ namespace sun{ namespace star{ namespace uno{ class Any; } } } }
namespace rtl{ class OUString; }

class SvXMLUnitConverter;
struct XMLPropertyState;

///////////////////////////////////////////////////////////////////////////
//
/** Abstract base-class for different XML-types. Derivations of this class
    knows how to compare, im/export a special XML-type
*/
class XMLOFF_DLLPUBLIC XMLPropertyHandler
{
	// ??? const SvXMLUnitConverter& rUnitConverter			Do we need this ?

public:
	// Just needed for virtual destruction
	virtual ~XMLPropertyHandler();

	/** Compares two Any's in case of the given XML-data-type.
	    By default the Any-equal-operator is called. */
	virtual bool equals( const ::com::sun::star::uno::Any& r1, const ::com::sun::star::uno::Any& r2 ) const;

	/// Imports the given value in cas of the given XML-data-type
	virtual sal_Bool importXML( const ::rtl::OUString& rStrImpValue, ::com::sun::star::uno::Any& rValue, const SvXMLUnitConverter& rUnitConverter ) const =0;
	/// Exports the given value in cas of the given XML-data-type
	virtual sal_Bool exportXML( ::rtl::OUString& rStrExpValue, const ::com::sun::star::uno::Any& rValue, const SvXMLUnitConverter& rUnitConverter ) const =0;
};

#endif		// _XMLOFF_PROPERTYHANDLERBASE_HXX