Метод itemToWidget

QListWidgetItem *CoinsDatabase::itemToWidget(const CoinItem &item) const
{
    QString label;

    (label += item.name) += "\t";
    if (item.era == Era::AfterChrist)
    {
        label += QString::number(item.year);
    }
    else
    {
        label += QString::number(item.century) += " в. до н. э.";
    }

    if (item.isRare)
    {
        (label += "\t") += QString::number(item.number) += " шт.";
    }

    return new QListWidgetItem(label);
}