Function delay

src/frontend/datasources/ImportFileWidget.cpp:1749–1756

}

inline void delay(int millisecondsWait)
{
	QEventLoop loop;
	QTimer t;
	t.connect(&t, &QTimer::timeout, &loop, &QEventLoop::quit);
	t.start(millisecondsWait);
	loop.exec();
}

void ImportFileWidget::refreshPreview() {
	DEBUG(Q_FUNC_INFO)