#ifndef ParenthesisHighlight_h
#define ParenthesisHighlight_h

/******************************************************************************
*
* Copyright (C) 2002 Hugo PEREIRA <mailto: hugo.pereira@free.fr>
*
* This is free software; you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option) any later
* version.
*
* This software 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 General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program.  If not, see <http://www.gnu.org/licenses/>.
*
*******************************************************************************/

/**
\file ParenthesisHighlight.h
\brief handles parenthesis matching highlighting
\author Hugo Pereira
\version $Revision$
\date $Date$
*/

#include <QApplication>
#include <QBasicTimer>
#include <QTextBlock>

#include "Counter.h"
#include "Debug.h"

class TextEditor;

//* handles parenthesis matching highlighting
class ParenthesisHighlight: public QObject, private Base::Counter<ParenthesisHighlight>
{

    Q_OBJECT

    public:

    //* constructor
    explicit ParenthesisHighlight( TextEditor* );

    //* enable/disable
    void setEnabled( bool value )
    { enabled_ = value; }

    //* enable/disable
    bool isEnabled() const
    { return enabled_; }

    //* synchronize
    void synchronize( const ParenthesisHighlight& );

    //* clear highlighted block
    //void clear();
    QList<QTextBlock> clear();

    //* highlight current (absolute) location
    void highlight( int, int );

    protected:

    //* highlight
    void _highlight();

    private:

    //* parent editor
    TextEditor* parent_ = nullptr;

    //* associated timer
    QBasicTimer timer_;

    //* true if enabled
    bool enabled_ = false;

    //* parenthesis location
    int location_ = -1;

    //* length
    int length_ = 0;

    //* true when cleared
    bool cleared_ = true;

};

#endif