/**
 * @file main/GUI/fatalerr.h
 * @brief Fatal error message dialog box
  * @author Enar Vaikene
*
 * Copyright (c) 2011-2019 Enar Vaikene
 *
 * This file is part of the eVaf C++ cross-platform application development framework.
 *
 * This file can be used under the terms of the GNU General Public License
 * version 3.0 as published by the Free Software Foundation and appearing in
 * the file LICENSE included in the packaging of this file. Please review the
 * the following information to ensure the GNU General Public License version
 * 3.0 requirements will be met: http://www.gnu.org/copyleft/gpl.html.
 *
 * Alternatively, this file may be used in accordance with the Commercial License
 * Agreement provided with the Software.
 */

#ifndef __GUI_FATALERR_H
#  define __GUI_FATALERR_H

#include <QDialog>

class QTimerEvent;

namespace eVaf {
namespace GUI {
namespace Internal {

/**
 * Fatal error message dialog box
 *
 * The fatal error message dialog box shows a fatal error message and starts a count-down
 * to close the dialog box and abort the application. Users can click on the Ignore button
 * to keep the application running for diagnostics.
 */
class FatalErr : public QDialog
{
    Q_OBJECT

public:

    /// Returns values
    enum Result {
        Abort       = 0,    ///< User clicked on the Abort button or the dialog box timed out
        Ignore      = 1     ///< User clicked on the Ignore button
    };

    /**
     * Creates the fatal error message dialog box
     * @param title Title of the dialog box
     * @param text Text shown on the dialog box
     * @param parent Optional parent widget
     */
    FatalErr(QString const & title, QString const & text, QWidget * parent = nullptr);

    /**
     * Shows a fatal error message dialog box
     * @param title Title of the dialog box
     * @param text Text shown on the dialog box
     * @param parent Optional parent widget
     * @return The result code
     */
    static int message(QString const & title, QString const & text, QWidget * parent = nullptr);


protected:

    /// Timer event handler
    virtual void timerEvent(QTimerEvent *);


private slots:

    /// Ignore button clicked
    void ignoreClicked();

    /// Abort button clicked
    void abortClicked();


private:

    /// Count-down time in secons
    static int const Timer = 60;

    /// Count-down timer
    int mTimer;

    /// The Abort button
    QPushButton * wAbort;

};

} // namespace eVaf::GUI::Internal
} // namespace eVaf::GUI
} // namespace eVaf

#endif // fatalerr.h