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#ifndef QTABLEVIEW_P_H

#define QTABLEVIEW_P_H

//

//  W A R N I N G

//  -------------

//

// This file is not part of the Qt API.  It exists purely as an

// implementation detail.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include <QtCore/QList>

#include <QtCore/QLinkedList>

#include <QtCore/QMap>

#include <QtCore/QSet>

#include <QtCore/QDebug>

#include "private/qabstractitemview_p.h"

#ifndef QT_NO_TABLEVIEW

QT_BEGIN_NAMESPACE

/** \internal

*

* This is a list of span with a binary index to look up quickly a span at a certain index.

*

* The index is a map of map.

* spans are mentaly divided into sub spans so that the start of any subspans doesn't overlap

* with any other subspans. There is no real representation of the subspans.

* The key of the first map is the row where the subspan starts, the value of the first map is

* a list (map) of all subspans that starts at the same row.  It is indexed with its row

*/

class QSpanCollection

{

public:

    struct Span

    {

        int m_top;

        int m_left;

        int m_bottom;

        int m_right;

        bool will_be_deleted;

        Span()

        : m_top(-1), m_left(-1), m_bottom(-1), m_right(-1), will_be_deleted(false) { }

        Span(int row, int column, int rowCount, int columnCount)

        : m_top(row), m_left(column), m_bottom(row+rowCount-1), m_right(column+columnCount-1), will_be_deleted(false) { }

        inline int top() const { return m_top; }

        inline int left() const { return m_left; }

        inline int bottom() const { return m_bottom; }

        inline int right() const { return m_right; }

        inline int height() const { return m_bottom - m_top + 1; }

        inline int width() const { return m_right - m_left + 1; }

    };

    ~QSpanCollection()

    {

        qDeleteAll(spans);

    }

    void addSpan(Span *span);

    void updateSpan(Span *span, int old_height);

    Span *spanAt(int x, int y) const;

    void clear();

    QList<Span *> spansInRect(int x, int y, int w, int h) const;

    void updateInsertedRows(int start, int end);

    void updateInsertedColumns(int start, int end);

    void updateRemovedRows(int start, int end);

    void updateRemovedColumns(int start, int end);

    typedef QLinkedList<Span *> SpanList;

    SpanList spans; //lists of all spans

private:

    //the indexes are negative so the QMap::lowerBound do what i need.

    typedef QMap<int, Span *> SubIndex;

    typedef QMap<int, SubIndex> Index;

    Index index;

    bool cleanSpanSubIndex(SubIndex &subindex, int end, bool update = false);

};

Q_DECLARE_TYPEINFO ( QSpanCollection::Span, Q_MOVABLE_TYPE);

class QTableViewPrivate : public QAbstractItemViewPrivate

{

    Q_DECLARE_PUBLIC(QTableView)

public:

    QTableViewPrivate()

        : showGrid(true), gridStyle(Qt::SolidLine),

          rowSectionAnchor(-1), columnSectionAnchor(-1),

          columnResizeTimerID(0), rowResizeTimerID(0),

          horizontalHeader(0), verticalHeader(0),

          sortingEnabled(false), geometryRecursionBlock(false),

          visualCursor(QPoint())

 {

    wrapItemText = true;

#ifndef QT_NO_DRAGANDDROP

    overwrite = true;

#endif

 }

    void init();

    void trimHiddenSelections(QItemSelectionRange *range) const;

    inline bool isHidden(int row, int col) const {

        return verticalHeader->isSectionHidden(row)

            || horizontalHeader->isSectionHidden(col);

    }

    inline int visualRow(int logicalRow) const {

        return verticalHeader->visualIndex(logicalRow);

    }

    inline int visualColumn(int logicalCol) const {

        return horizontalHeader->visualIndex(logicalCol);

    }

    inline int logicalRow(int visualRow) const {

        return verticalHeader->logicalIndex(visualRow);

    }

    inline int logicalColumn(int visualCol) const {

        return horizontalHeader->logicalIndex(visualCol);

    }

    int sectionSpanEndLogical(const QHeaderView *header, int logical, int span) const;

    int sectionSpanSize(const QHeaderView *header, int logical, int span) const;

    bool spanContainsSection(const QHeaderView *header, int logical, int spanLogical, int span) const;

    void drawAndClipSpans(const QRegion &area, QPainter *painter,

                          const QStyleOptionViewItemV4 &option, QBitArray *drawn,

                          int firstVisualRow, int lastVisualRow, int firstVisualColumn, int lastVisualColumn);

    void drawCell(QPainter *painter, const QStyleOptionViewItemV4 &option, const QModelIndex &index);

    bool showGrid;

    Qt::PenStyle gridStyle;

    int rowSectionAnchor;

    int columnSectionAnchor;

    int columnResizeTimerID;

    int rowResizeTimerID;

    QList<int> columnsToUpdate;

    QList<int> rowsToUpdate;

    QHeaderView *horizontalHeader;

    QHeaderView *verticalHeader;

    QWidget *cornerWidget;

    bool sortingEnabled;

    bool geometryRecursionBlock;

    QPoint visualCursor;  // (Row,column) cell coordinates to track through span navigation.

    QSpanCollection spans;

    void setSpan(int row, int column, int rowSpan, int columnSpan);

    QSpanCollection::Span span(int row, int column) const;

    inline int rowSpan(int row, int column) const {

        return span(row, column).height();

    }

    inline int columnSpan(int row, int column) const {

        return span(row, column).width();

    }

    inline bool hasSpans() const {

        return !spans.spans.isEmpty();

    }

    inline int rowSpanHeight(int row, int span) const {

        return sectionSpanSize(verticalHeader, row, span);

    }

    inline int columnSpanWidth(int column, int span) const {

        return sectionSpanSize(horizontalHeader, column, span);

    }

    inline int rowSpanEndLogical(int row, int span) const {

        return sectionSpanEndLogical(verticalHeader, row, span);

    }

    inline int columnSpanEndLogical(int column, int span) const {

        return sectionSpanEndLogical(horizontalHeader, column, span);

    }

    inline bool isRowHidden(int row) const {

        return verticalHeader->isSectionHidden(row);

    }

    inline bool isColumnHidden(int column) const {

        return horizontalHeader->isSectionHidden(column);

    }

    inline bool isCellEnabled(int row, int column) const {

        return isIndexEnabled(model->index(row, column, root));

    }

    inline bool isVisualRowHiddenOrDisabled(int row, int column) const {

        int r = logicalRow(row);

        int c = logicalColumn(column);

        return isRowHidden(r) || !isCellEnabled(r, c);

    }

    inline bool isVisualColumnHiddenOrDisabled(int row, int column) const {

        int r = logicalRow(row);

        int c = logicalColumn(column);

        return isColumnHidden(c) || !isCellEnabled(r, c);

    }

    QRect visualSpanRect(const QSpanCollection::Span &span) const;

    void _q_selectRow(int row);

    void _q_selectColumn(int column);

    void selectRow(int row, bool anchor);

    void selectColumn(int column, bool anchor);

    void _q_updateSpanInsertedRows(const QModelIndex &parent, int start, int end);

    void _q_updateSpanInsertedColumns(const QModelIndex &parent, int start, int end);

    void _q_updateSpanRemovedRows(const QModelIndex &parent, int start, int end);

    void _q_updateSpanRemovedColumns(const QModelIndex &parent, int start, int end);

};

QT_END_NAMESPACE

#endif // QT_NO_TABLEVIEW

#endif // QTABLEVIEW_P_H