// $Revision: 1.10 $
//------------------------------------------------------------------------------
//
// Copyright (C) 1994, 1995 Taligent, Inc. All rights reserved.
//
// Project:			StockBrowser
// File:			ViewerPresenterState.h
// Build/Version:	1.0.0
//
// Description:		TViewerPresenterState holds a persistent graph constructor
//					object.
//
//------------------------------------------------------------------------------

#ifndef TaligentSamples_VIEWERPRESENTERSTATE
#define TaligentSamples_VIEWERPRESENTERSTATE

class TViewerPresenterState;

#ifndef Taligent_GUICOMPOUNDDOCUMENT
#include <Taligent/GUICompoundDocument.h>
#endif

class TStockGraphConstructor;

//==============================================================================
// TViewerPresenterState

class TViewerPresenterState : public TGUIPresenterState {
public:
	TaligentTypeExtensionDeclarationsMacro(TViewerPresenterState)

public:
							TViewerPresenterState();
							TViewerPresenterState(const TViewerPresenterState& presenterState);
							TViewerPresenterState(const TModelReference& model);
	virtual					~TViewerPresenterState();

	TViewerPresenterState&	operator=(const TViewerPresenterState& source);
	virtual TStream&		operator>>=(TStream& toStream) const;
	virtual TStream&		operator<<=(TStream& fromStream);

	virtual void			AdoptGraphConstructor(TStockGraphConstructor* adopted);
	virtual TStockGraphConstructor*
							OrphanGraphConstructor();
	virtual TStockGraphConstructor*
							GetGraphConstructor();

	virtual TModelPresenterStateInterest
							GetNewGraphConstructorInterest() const;

	//..........................................................................
	// Lookup functions
	
	static TViewerPresenterState*
							LookupForWriting(const TPresenterStateReference& presenterState);
	static const TViewerPresenterState*
							LookupForReading(const TPresenterStateReference& presenterState);

protected:
	//..........................................................................
	// TGUIPresenterState override
	
	virtual TGUIPresenter*	HandleCreatePresenter(const TGUIBundle& theGUIBundle) const;

private:
	enum					{kOriginalVersion};

	TStockGraphConstructor*	fGraphConstructor;
};

#endif