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

#ifndef QSYNTAXHIGHLIGHTER_H

#define QSYNTAXHIGHLIGHTER_H

#include <QtCore/qglobal.h>

#ifndef QT_NO_SYNTAXHIGHLIGHTER

#include <QtCore/qobject.h>

#include <QtGui/qtextobject.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QTextDocument;

class QSyntaxHighlighterPrivate;

class QTextCharFormat;

class QFont;

class QColor;

class QTextBlockUserData;

class QTextEdit;

class Q_GUI_EXPORT QSyntaxHighlighter : public QObject

{

    Q_OBJECT

    Q_DECLARE_PRIVATE(QSyntaxHighlighter)

public:

    QSyntaxHighlighter(QObject *parent);

    QSyntaxHighlighter(QTextDocument *parent);

    QSyntaxHighlighter(QTextEdit *parent);

    virtual ~QSyntaxHighlighter();

    void setDocument(QTextDocument *doc);

    QTextDocument *document() const;

public Q_SLOTS:

    void rehighlight();

    void rehighlightBlock(const QTextBlock &block);

protected:

    virtual void highlightBlock(const QString &text) = 0;

    void setFormat(int start, int count, const QTextCharFormat &format);

    void setFormat(int start, int count, const QColor &color);

    void setFormat(int start, int count, const QFont &font);

    QTextCharFormat format(int pos) const;

    int previousBlockState() const;

    int currentBlockState() const;

    void setCurrentBlockState(int newState);

    void setCurrentBlockUserData(QTextBlockUserData *data);

    QTextBlockUserData *currentBlockUserData() const;

    QTextBlock currentBlock() const;

private:

    Q_DISABLE_COPY(QSyntaxHighlighter)

    Q_PRIVATE_SLOT(d_func(), void _q_reformatBlocks(int from, int charsRemoved, int charsAdded))

    Q_PRIVATE_SLOT(d_func(), void _q_delayedRehighlight())

};

QT_END_NAMESPACE

QT_END_HEADER

#endif // QT_NO_SYNTAXHIGHLIGHTER

#endif // QSYNTAXHIGHLIGHTER_H