/*
 * Copyright 2006 - 2010, Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef	COLUMN_H
#define	COLUMN_H


#include <List.h>

#include "Constraint.h"
#include "LinearSpec.h"


namespace BALM {

class BALMLayout;
class XTab;

/**
 * Represents a column defined by two x-tabs.
 */
class Column {
public:
			XTab*				Left() const;
			XTab*				Right() const;
			Column*				Previous() const;
			void					SetPrevious(Column* value);
			Column*				Next() const;
			void					SetNext(Column* value);
			//~ string				ToString();
			void					InsertBefore(Column* column);
			void					InsertAfter(Column* column);
			Constraint*			HasSameWidthAs(Column* column);
			BList*				Constraints() const;
			void					SetConstraints(BList* constraints);
								~Column();

protected:
								Column(LinearSpec* ls);

protected:
			LinearSpec*			fLS;
			XTab*				fLeft;
			XTab*				fRight;

private:
			Column*				fPrevious;
			Column*				fNext;
			Constraint*			fPreviousGlue;
			Constraint*			fNextGlue;
			BList*				fConstraints;

public:
	friend class			BALMLayout;
	
};

}	// namespace BALM

using BALM::Column;

#endif	// COLUMN_H