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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h

#ifndef __I_ATTRIBUTE_EXCHANGING_OBJECT_H_INCLUDED__
#define __I_ATTRIBUTE_EXCHANGING_OBJECT_H_INCLUDED__

#include "IReferenceCounted.h"


namespace irr
{

namespace io
{

class IAttributes;

//! Enumeration flags passed through SAttributeReadWriteOptions to the IAttributeExchangingObject object
enum E_ATTRIBUTE_READ_WRITE_FLAGS
{
	//! Serialization/Deserializion is done for an xml file
	EARWF_FOR_FILE = 0x00000001,

	//! Serialization/Deserializion is done for an editor property box
	EARWF_FOR_EDITOR = 0x00000002,

	//! When writing filenames, relative paths should be used
	EARWF_USE_RELATIVE_PATHS = 0x00000004
};


//! struct holding data describing options
struct SAttributeReadWriteOptions
{
	//! Constructor
	SAttributeReadWriteOptions()
		: Flags(0), Filename(0)
	{
	}

	//! Combination of E_ATTRIBUTE_READ_WRITE_FLAGS or other, custom ones
	s32 Flags;

	//! Optional filename
	const fschar_t* Filename;
};


//! An object which is able to serialize and deserialize its attributes into an attributes object
class IAttributeExchangingObject : virtual public IReferenceCounted
{
public:

	//! Writes attributes of the object.
	/** Implement this to expose the attributes of your scene node animator for
	scripting languages, editors, debuggers or xml serialization purposes. */
	virtual void serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options=0) const {}

	//! Reads attributes of the object.
	/** Implement this to set the attributes of your scene node animator for
	scripting languages, editors, debuggers or xml deserialization purposes. */
	virtual void deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options=0) {}

};

} // end namespace io
} // end namespace irr

#endif