/*

 * Copyright (C) 1997 Martin Jones (mjones@kde.org)

 *           (C) 1997 Torben Weis (weis@kde.org)

 *           (C) 1998 Waldo Bastian (bastian@kde.org)

 *           (C) 1999 Lars Knoll (knoll@kde.org)

 *           (C) 1999 Antti Koivisto (koivisto@kde.org)

 * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.

 *

 * This library is free software; you can redistribute it and/or

 * modify it under the terms of the GNU Library General Public

 * License as published by the Free Software Foundation; either

 * version 2 of the License, or (at your option) any later version.

 *

 * This library is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 * Library General Public License for more details.

 *

 * You should have received a copy of the GNU Library General Public License

 * along with this library; see the file COPYING.LIB.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#ifndef RenderTableSection_h

#define RenderTableSection_h

#include "RenderTable.h"

#include <wtf/Vector.h>

namespace WebCore {

class RenderTableCell;

class RenderTableRow;

class RenderTableSection : public RenderBox {

public:

    RenderTableSection(Node*);

    virtual ~RenderTableSection();

    const RenderObjectChildList* children() const { return &m_children; }

    RenderObjectChildList* children() { return &m_children; }

    virtual void addChild(RenderObject* child, RenderObject* beforeChild = 0);

    virtual int firstLineBoxBaseline() const;

    void addCell(RenderTableCell*, RenderTableRow* row);

    void setCellWidths();

    int calcRowHeight();

    int layoutRows(int height);

    RenderTable* table() const { return toRenderTable(parent()); }

    struct CellStruct {

        RenderTableCell* cell;

        bool inColSpan; // true for columns after the first in a colspan

    };

    typedef Vector<CellStruct> Row;

    struct RowStruct {

        Row* row;

        RenderTableRow* rowRenderer;

        int baseline;

        Length height;

    };

    CellStruct& cellAt(int row,  int col) { return (*m_grid[row].row)[col]; }

    const CellStruct& cellAt(int row, int col) const { return (*m_grid[row].row)[col]; }

    void appendColumn(int pos);

    void splitColumn(int pos, int newSize);

    int calcOuterBorderTop() const;

    int calcOuterBorderBottom() const;

    int calcOuterBorderLeft(bool rtl) const;

    int calcOuterBorderRight(bool rtl) const;

    void recalcOuterBorder();

    int outerBorderTop() const { return m_outerBorderTop; }

    int outerBorderBottom() const { return m_outerBorderBottom; }

    int outerBorderLeft() const { return m_outerBorderLeft; }

    int outerBorderRight() const { return m_outerBorderRight; }

    int numRows() const { return m_gridRows; }

    int numColumns() const;

    void recalcCells();

    void recalcCellsIfNeeded()

    {

        if (m_needsCellRecalc)

            recalcCells();

    }

    bool needsCellRecalc() const { return m_needsCellRecalc; }

    void setNeedsCellRecalc()

    {

        m_needsCellRecalc = true;

        table()->setNeedsSectionRecalc();

    }

    int getBaseline(int row) { return m_grid[row].baseline; }

private:

    virtual RenderObjectChildList* virtualChildren() { return children(); }

    virtual const RenderObjectChildList* virtualChildren() const { return children(); }

    virtual const char* renderName() const { return isAnonymous() ? "RenderTableSection (anonymous)" : "RenderTableSection"; }

    virtual bool isTableSection() const { return true; }

    virtual void destroy();

    virtual void layout();

    virtual void removeChild(RenderObject* oldChild);

    virtual int lowestPosition(bool includeOverflowInterior, bool includeSelf) const;

    virtual int rightmostPosition(bool includeOverflowInterior, bool includeSelf) const;

    virtual int leftmostPosition(bool includeOverflowInterior, bool includeSelf) const;

    virtual void paint(PaintInfo&, int tx, int ty);

    virtual void paintObject(PaintInfo&, int tx, int ty);

    virtual void imageChanged(WrappedImagePtr, const IntRect* = 0);

    virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);

    virtual int lineHeight(bool, bool) const { return 0; }

    bool ensureRows(int);

    void clearGrid();

    RenderObjectChildList m_children;

    Vector<RowStruct> m_grid;

    Vector<int> m_rowPos;

    int m_gridRows;

    // the current insertion position

    int m_cCol;

    int m_cRow;

    int m_outerBorderLeft;

    int m_outerBorderRight;

    int m_outerBorderTop;

    int m_outerBorderBottom;

    bool m_needsCellRecalc;

    bool m_hasOverflowingCell;

};

inline RenderTableSection* toRenderTableSection(RenderObject* object)

{

    ASSERT(!object || object->isTableSection());

    return static_cast<RenderTableSection*>(object);

}

inline const RenderTableSection* toRenderTableSection(const RenderObject* object)

{

    ASSERT(!object || object->isTableSection());

    return static_cast<const RenderTableSection*>(object);

}

// This will catch anyone doing an unnecessary cast.

void toRenderTableSection(const RenderTableSection*);

} // namespace WebCore

#endif // RenderTableSection_h