Make QTableView behave identical for Key_Up and Key_Tab when there are delegates

olowo726

I have a QTable in which one column sometimes, i.e. for some rows, have a delegate editor of type QLineEdit. User can only select entire row. When one QLineEdit have focus and the user presses Key_Up/Key_Down the previous/next row is selected and previous/next QLineEdit automatically gets focus. How can I get the same behaviour for tab? I've tried to capture the key events in the table view, i.e.

void ScalarTableTableView::keyPressEvent(QKeyEvent *event)
{
    // Change tab to arrow up/down to be able to move to next row with one key.
    if(event->key() == Qt::Key_Tab || event->key() == Qt::Key_Backtab)
    {
        QKeyEvent newEvent(event->type(),
                           event->key() == Qt::Key_Tab ? Qt::Key_Down : Qt::Key_Up,
                           event->modifiers(),
                           event->nativeScanCode(),
                           event->nativeModifiers(),
                           event->nativeVirtualKey(),
                           event->text(),
                           event->isAutoRepeat(),
                           event->count());
        event->accept();
        MoveBetweenViewsWithDragAndDropTableView::keyPressEvent(&newEvent);
    }
    else
    {
        MoveBetweenViewsWithDragAndDropTableView::keyPressEvent(event);
    }
}

This works for selecting the previous/next row but the QLineEdit doesn't get focus. Do I need to set focus manually? If so, how can I get the delegate QLineEdit for a certain row?

eyllanesc

@olowo726 You can do the move directly:

void ScalarTableTableView::keyPressEvent(QKeyEvent *event)
{
    if(event->key() == Qt::Key_Tab || event->key() == Qt::Key_Backtab)
    {
        QModelIndex newCurrent = moveCursor(event->key() == Qt::Key_Tab ? MoveDown: MoveUp, event->modifiers());
        QItemSelectionModel::SelectionFlags command = selectionCommand(newCurrent, event);
        selectionModel()->setCurrentIndex(newCurrent, command);
        return;
    }
    QTableView::keyPressEvent(event);
}

olowo726

@eyllanesc Doesn't work, the delegates do not get focus.