#ifndef SOMWIDGET_IMPL_H
#define SOMWIDGET_IMPL_H
/***************************************************************************
    copyright            : (C) 2005, 2006 by Carsten Niehaus
    email                : cniehaus@kde.org
 ***************************************************************************/
/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include <QWidget>
#include "ui_somwidget.h"

class Element;
class QTimer;
/**
 * @class SOMWidgetIMPL
 * @author Carsten Niehaus
 * @author Pino Toscano
 * @author Kashyap Puranik
 *
 * The SOMWidgetIMPL provides a QSlider. When this slider is moved,
 * this widget will display which elements have a boiling or melting
 * point near the temperature the user entered using the slider.
 */
class SOMWidgetIMPL : public QWidget, private Ui_SOMWidget
{
	Q_OBJECT

	public:
		/**
		 * @param parent The parent of this widget
		 */
		SOMWidgetIMPL( QWidget *parent = 0 );

                /**
                  * @return the currently set temperature (in Kelvin)
                  */
		int temperature() const;

	public slots:
		/**
		 * Reload the current unit from the preferences
		 */
		void reloadUnits();

	private:
		QList<Element*> m_list;
		QString m_htmlBegin;
		QString m_htmlEnd;
		int m_prevUnit;
		int m_mode;		//Indicates whether mode is play or stop
		QTimer *m_timer;

	private slots:
		void sliderValueChanged( int temp );
		void play ( void );
		void stop ( void );
		void tick ( void );
		/**
		 * in this slot the elements will be compared with
		 * the temperature @p newtemp. The content of the HTML
		 * will be generated
		 */
		void setNewTemp( int newtemp );

	signals:
		/**
		 * Emitted when the chosen temperature is changed.
		 * The temperature @p newtemp is expressed always in Kelvin.
		 */
		void temperatureChanged( int newtemp );
};
#endif // SOMWIDGET_IMPL_H