/****************************************************************************

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** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).

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** appearing in the file LICENSE.LGPL included in the packaging of this

** file. Please review the following information to ensure the GNU Lesser

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** Alternatively, this file may be used under the terms of the GNU General

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****************************************************************************/

#ifndef QTEXTCURSOR_P_H

#define QTEXTCURSOR_P_H

//

//  W A R N I N G

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

//

// This file is not part of the Qt API.  It exists for the convenience

// of other Qt classes.  This header file may change from version to

// version without notice, or even be removed.

//

// We mean it.

//

#include "qtextcursor.h"

#include "qtextdocument.h"

#include "qtextdocument_p.h"

#include <private/qtextformat_p.h>

#include "qtextobject.h"

QT_BEGIN_NAMESPACE

class QTextCursorPrivate : public QSharedData

{

public:

    QTextCursorPrivate(QTextDocumentPrivate *p);

    QTextCursorPrivate(const QTextCursorPrivate &rhs);

    ~QTextCursorPrivate();

    enum AdjustResult { CursorMoved, CursorUnchanged };

    AdjustResult adjustPosition(int positionOfChange, int charsAddedOrRemoved, QTextUndoCommand::Operation op);

    void adjustCursor(QTextCursor::MoveOperation m);

    void remove();

    void clearCells(QTextTable *table, int startRow, int startCol, int numRows, int numCols, QTextUndoCommand::Operation op);

    inline bool setPosition(int newPosition) {

        Q_ASSERT(newPosition >= 0 && newPosition < priv->length());

        bool moved = position != newPosition;

        if (moved) {

            position = newPosition;

            currentCharFormat = -1;

        }

        return moved;

    }

    void setX();

    bool canDelete(int pos) const;

    void insertBlock(const QTextBlockFormat &format, const QTextCharFormat &charFormat);

    bool movePosition(QTextCursor::MoveOperation op, QTextCursor::MoveMode mode = QTextCursor::MoveAnchor);

    inline QTextBlock block() const

        { return QTextBlock(priv, priv->blockMap().findNode(position)); }

    inline QTextBlockFormat blockFormat() const

        { return block().blockFormat(); }

    QTextLayout *blockLayout(QTextBlock &block) const;

    QTextTable *complexSelectionTable() const;

    void selectedTableCells(int *firstRow, int *numRows, int *firstColumn, int *numColumns) const;

    void setBlockCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);

    void setBlockFormat(const QTextBlockFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);

    void setCharFormat(const QTextCharFormat &format, QTextDocumentPrivate::FormatChangeMode changeMode);

    void aboutToRemoveCell(int from, int to);

    QTextDocumentPrivate *priv;

    qreal x;

    int position;

    int anchor;

    int adjusted_anchor;

    int currentCharFormat;

    uint visualNavigation : 1;

    uint keepPositionOnInsert : 1;

    uint changed : 1;

};

QT_END_NAMESPACE

#endif // QTEXTCURSOR_P_H