/*************************************************************************
 * Copyright (C) 2014 by Hugo Pereira Da Costa <hugo.pereira@free.fr>    *
 *                                                                       *
 * This program 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 program 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, write to the                         *
 * Free Software Foundation, Inc.,                                       *
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA .        *
 *************************************************************************/

#ifndef ADWAITA_TABBAR_DATA_H
#define ADWAITA_TABBAR_DATA_H

#include "adwaitaanimationdata.h"
#include "adwaitaqt_export.h"

#include <QTabBar>

namespace Adwaita
{
//* tabbars
class ADWAITAQT_EXPORT TabBarData : public AnimationData
{
    Q_OBJECT

    //* declare opacity property
    Q_PROPERTY(qreal currentOpacity READ currentOpacity WRITE setCurrentOpacity)
    Q_PROPERTY(qreal previousOpacity READ previousOpacity WRITE setPreviousOpacity)
public:
    //* constructor
    TabBarData(QObject *parent, QWidget *target, int duration);

    //* destructor
    virtual ~TabBarData()
    {
    }

    //* duration
    void setDuration(int duration)
    {
        currentIndexAnimation().data()->setDuration(duration);
        previousIndexAnimation().data()->setDuration(duration);
    }

    //* update state
    bool updateState(const QPoint &, bool);

    //*@name current index handling
    //@{

    //* current opacity
    virtual qreal currentOpacity() const
    {
        return _current._opacity;
    }

    //* current opacity
    virtual void setCurrentOpacity(qreal value)
    {
        if (_current._opacity == value) {
            return;
        }

        _current._opacity = value;
        setDirty();
    }

    //* current index
    virtual int currentIndex() const
    {
        return _current._index;
    }

    //* current index
    virtual void setCurrentIndex(int index)
    {
        _current._index = index;
    }

    //* current index animation
    virtual const Animation::Pointer &currentIndexAnimation() const
    {
        return _current._animation;
    }

    //@}

    //*@name previous index handling
    //@{

    //* previous opacity
    virtual qreal previousOpacity() const
    {
        return _previous._opacity;
    }

    //* previous opacity
    virtual void setPreviousOpacity(qreal value)
    {
        if (_previous._opacity == value) {
            return;
        }

        _previous._opacity = value;
        setDirty();
    }

    //* previous index
    virtual int previousIndex() const
    {
        return _previous._index;
    }

    //* previous index
    virtual void setPreviousIndex(int index)
    {
        _previous._index = index;
    }

    //* previous index Animation
    virtual const Animation::Pointer &previousIndexAnimation() const
    {
        return _previous._animation;
    }

    //@}

    //* return Animation associated to action at given position, if any
    virtual Animation::Pointer animation(const QPoint &position) const;

    //* return opacity associated to action at given position, if any
    virtual qreal opacity(const QPoint &position) const;

private:
    //* container for needed animation data
    class Data
    {
    public:
        //* default constructor
        Data()
            : _opacity(0)
            , _index(-1)
        {
        }

        Animation::Pointer _animation;
        qreal _opacity;
        int _index;
    };

    //* current tab animation data (for hover enter animations)
    Data _current;

    //* previous tab animations data (for hover leave animations)
    Data _previous;
};

} // namespace Adwaita

#endif // ADWAITA_TABBAR_DATA_H