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


#include <ObjectList.h>
#include <Referenceable.h>


namespace LinearProgramming {
        class Constraint;
        class LinearSpec;
};


namespace BPrivate {
        class SharedSolver;
};


namespace BALM {


class Area;
class BALMLayout;
class RowColumnManager;
class XTab;
class YTab;


/**
 * Represents a row defined by two y-tabs.
 */
class Row {
public:
                                                                ~Row();

                        YTab*                           Top() const;
                        YTab*                           Bottom() const;

private:
        friend class BALMLayout;
        friend class BALM::RowColumnManager;
        friend class BPrivate::SharedSolver;

                                                                Row(LinearProgramming::LinearSpec* ls,
                                                                                YTab* top, YTab* bottom);

                        BReference<YTab>        fTop;
                        BReference<YTab>        fBottom;

                        LinearProgramming::LinearSpec* fLS;
                        LinearProgramming::Constraint* fPrefSizeConstraint;
                                // managed by RowColumnManager

                        BObjectList<Area>       fAreas;
};

}       // namespace BALM

using BALM::Row;

#endif  // ROW_H