/*************************************************************************
 * 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_BASE_ENGINE_H
#define ADWAITA_BASE_ENGINE_H

#include "adwaita.h"
#include "adwaitaqt_export.h"

#include <QObject>
#include <QSet>

namespace Adwaita
{
//* base class for all animation engines
/** it is used to store configuration values used by all animations stored in the engine */
class ADWAITAQT_EXPORT BaseEngine : public QObject
{
    Q_OBJECT
public:
    using Pointer = WeakPointer<BaseEngine>;

    //* constructor
    explicit BaseEngine(QObject *parent)
        : QObject(parent)
        , _enabled(true)
        , _duration(200)
    {
    }

    //* destructor
    virtual ~BaseEngine()
    {
    }

    //* enability
    virtual void setEnabled(bool value)
    {
        _enabled = value;
    }

    //* enability
    virtual bool enabled() const
    {
        return _enabled;
    }

    //* duration
    virtual void setDuration(int value)
    {
        _duration = value;
    }

    //* duration
    virtual int duration() const
    {
        return _duration;
    }

    //* unregister widget
    virtual bool unregisterWidget(QObject *object) = 0;

    //* list of widgets
    using WidgetList = QSet<QWidget *>;

    //* returns registered widgets
    virtual WidgetList registeredWidgets() const
    {
        return WidgetList();
    }

private:
    //* engine enability
    bool _enabled;

    //* animation duration
    int _duration;
};

} // namespace Adwaita

#endif // ADWAITA_BASE_ENGINE_H