/**
 * @file main/GUI/fatalerr.cpp
 * @brief Fatal error message dialog box
  * @author Enar Vaikene
*
 * Copyright (c) 2011 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.
 */

#include "fatalerr.h"

#include <QtWidgets>

using namespace eVaf::GUI::Internal;


//-------------------------------------------------------------------

FatalErr::FatalErr(QString const & title, QString const & text, QWidget * parent)
    : QDialog(parent, Qt::WindowTitleHint)
    , mTimer(Timer)
{
    setWindowTitle(title);

    QVBoxLayout * layout = new QVBoxLayout;
    layout->setSpacing(10);
    setLayout(layout);

    QHBoxLayout * messageBox = new QHBoxLayout;
    messageBox->setSpacing(20);
    layout->addLayout(messageBox);

    // Icon
    QLabel * l = new QLabel;
    l->setPixmap(QMessageBox::standardIcon(QMessageBox::Critical));
    l->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);
    messageBox->addWidget(l);

    // Error message text
    l = new QLabel(text);
    l->setWordWrap(true);
    l->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    messageBox->addWidget(l);

    // Warning about the Ignore button
    l = new QLabel;
    l->setTextFormat(Qt::RichText);
    l->setText(tr(
        "<p><small><i>Clicking on the 'Abort' button aborts the application.<br>"
        "Clicking on the 'Ignore' button keeps the application running for diagnostics.</i></small></p>"
        "<p><small><font color=\"red\">The application might be unstable if fatal errors are ignored!</font></small></p>"
    ));
    layout->addWidget(l);

    // Buttons
    QHBoxLayout * buttonBox = new QHBoxLayout;
    layout->addLayout(buttonBox);

    buttonBox->addStretch();

    wAbort = new QPushButton(tr("%Abort (%1 sec)").arg(mTimer));
    connect(wAbort, SIGNAL(clicked()), this, SLOT(abortClicked()));
    buttonBox->addWidget(wAbort);
    setFocusProxy(wAbort);

    QPushButton * b = new QPushButton(tr("&Ignore"));
    connect(b, SIGNAL(clicked()), this, SLOT(ignoreClicked()));
    buttonBox->addWidget(b);

    setResult(Abort);

    // Start the count-down timer
    startTimer(1000);
}

void FatalErr::timerEvent(QTimerEvent *)
{
    --mTimer;
    wAbort->setText(tr("&Abort (%1 sec)").arg(mTimer));

    if (mTimer <= 0)
        done(Abort);
}

void FatalErr::abortClicked()
{
    done(Abort);
}

void FatalErr::ignoreClicked()
{
    done(Ignore);
}

int FatalErr::message(QString const & title, QString const & text, QWidget * parent)
{
    FatalErr msg(title, text, parent);
    return msg.exec();
}