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QWidget* BtnDelegate::createEditor(QWidget *parent, const QStyleOptionViewItem& /* option */, const QModelIndex &/* index */) const {
    QWidget *editor = new QWidget(parent);
    QHBoxLayout *h  = new QHBoxLayout();
    QPushButton *btn = new QPushButton("...", editor);
    btn->setMaximumWidth(20);
    QLineEdit *dd = new QLineEdit(editor);
    dd->setStyleSheet("background-color: white; border-top-color: white; border-bottom-color: red;");
    h->addWidget(dd);
    h->addWidget(btn);
    h->setContentsMargins(0,0,0,0);
    h->setSpacing(0);
    editor->setLayout(h);
    QObject::connect(btn, SIGNAL(clicked()), this, SIGNAL( clicked() ) );

    dd->setFocus();
    dd->selectAll();

    return editor;
}

void BtnDelegate::setEditorData(QWidget *editor, const QModelIndex &index) const {
    QString value = index.model()->data(index, Qt::EditRole).toString();
    QLineEdit *le = editor->findChild<QLineEdit *>();
    le->setText(value);

    le->setFocus();
    le->selectAll();
}