void OperationsDelegate::setEditorData(QWidget *editor,
const QModelIndex &index) const
{
const QVariant value = index.data(Qt::EditRole);
if (value.type() == QVariant::StringList) {
QListWidget *lw = qobject_cast<QListWidget *>(editor);
const auto items = lw->findItems(index.data(Qt::DisplayRole).toString(), Qt::MatchExactly);
if (!items.empty())
lw->setCurrentItem(items.first());
else
lw->setCurrentItem(lw->item(0));
const int extraWidth = 25;
const int extraHeight = 6;
lw->setMinimumWidth(lw->sizeHintForColumn(0) + extraWidth);
// to prevent possible hiding bottom part of the list
const int h = lw->count() * (lw->visualItemRect(lw->currentItem()).height() + extraHeight);
const int y = (lw->parentWidget() && (lw->parentWidget()->rect().bottom() < lw->y() + h))
? lw->parentWidget()->rect().bottom() - h - extraHeight : lw->y();
lw->setGeometry(lw->x(), y, lw->width(), h);
// now lw can be partially hidden behind the tree view
// if tree view has small rect, so set parent of lw
// to app window and map coordinates accordingly to leave lw in place
const auto globalCoord = lw->parentWidget()->mapToGlobal(lw->geometry().topLeft());
lw->setParent(appWindow);
const auto newLocalCoord = appWindow->mapFromGlobal(globalCoord);
lw->setGeometry(newLocalCoord.x(), newLocalCoord.y(), lw->width(), h);
}
else // single value
QStyledItemDelegate::setEditorData(editor, index);
}
