#include <QApplication>
#include <QHBoxLayout>
#include <QMessageBox>
#include <QThread>
#include <QTimer>
#include <QWebSettings>
#include <QWebView>
#include <QUrl>

#define INTERACTIVE_TEST 1

class Viewer : public QWidget {
    Q_OBJECT

public:
    Viewer(QWidget *parent = 0) : QWidget(parent)
    {
        // setting icon database path [1]
        QWebSettings::globalSettings()->setIconDatabasePath(qApp->applicationDirPath());
        m_webView = new QWebView(this);
        m_webView->setObjectName("webView");
        QMetaObject::connectSlotsByName(this);
        // meta refresh with 0 second delay and base URL with favicon.ico [2]
        m_webView->setHtml("<html><head><meta http-equiv=\"Refresh\" content=\"0; url=about:blank\"></head></html>",
                           QUrl("http://www.webkit.org/"));
        QHBoxLayout *layout = new QHBoxLayout(this);
        layout->addWidget(m_webView);

        // the combination of [1] and [2] results in loadFinished event with ok = false
    }

private slots:
    void on_webView_loadFinished(bool ok)
    {
        // for some reason, ok = false because of [1]
        if (!ok) {
#if INTERACTIVE_TEST
            // crash after clicking OK in blocking modal message box
            QMessageBox::critical(this, tr("Error"), tr("Failed to load URL."));
#else
            // block while processing events for a bit to simulate showing blocking modal dialog and clicking OK
            QEventLoop ev;
            QTimer::singleShot(1000, &ev, SLOT(quit()));
            ev.exec();
#endif
        }

#if !INTERACTIVE_TEST
        qApp->quit();
#endif
    }

private:
    QWebView *m_webView;
};

#include "main.moc"

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Viewer v;
#if INTERACTIVE_TEST
    v.show();
#endif
    return a.exec();
}