// $Revision: 1.9 $
//------------------------------------------------------------------------------
//
// Copyright (C) 1994, 1995 Taligent, Inc. All rights reserved.
//
// Project:			StockBrowser
// File:			SetGraphConstructorCommand.h
// Build/Version:	1.0.0
//
// Description:		TSetGraphConstructorCommand replaces the presenter state's
//					graph constructor object with a new one and sends out a
//					notification of the change.
//
//------------------------------------------------------------------------------

#ifndef TaligentSamples_SETGRAPHCONSTRUCTORCOMMAND
#define TaligentSamples_SETGRAPHCONSTRUCTORCOMMAND

class TStockGraphConstructor;

#ifndef Taligent_BASICDOCUMENTCOMMAND
#include <Taligent/BasicDocumentCommand.h>
#endif

class TPresenterStateSelection;

//==============================================================================
// TSetGraphConstructorCommand

class TSetGraphConstructorCommand : public TCommandOn<TPresenterStateSelection> {
public:
	TaligentTypeExtensionDeclarationsMacro(TSetGraphConstructorCommand)

public:
							TSetGraphConstructorCommand(
								const TSetGraphConstructorCommand& source);
							TSetGraphConstructorCommand(
								TStockGraphConstructor* adoptedNewConstructor);
	virtual					~TSetGraphConstructorCommand();
	
	TSetGraphConstructorCommand&
							operator=(const TSetGraphConstructorCommand& source);
	virtual TStream&		operator>>=(TStream& toStream) const;
	virtual TStream&		operator<<=(TStream& fromStream);

protected:
							TSetGraphConstructorCommand();
							
	virtual void			HandleDoBegin(TPresenterStateSelection& target);
	virtual void			HandleUndo(TPresenterStateSelection& target);
	virtual void			HandleRedo(TPresenterStateSelection& target);

private:
	enum					{kOriginalVersion};
	
	TDeleterFor<TStockGraphConstructor>	fConstructor;
};

#endif