Method mappingSequenceTableCellChanged

QKeyMapper/qmappingsequenceedit.cpp:1264–1323

}

void QMappingSequenceEdit::mappingSequenceTableCellChanged(int row, int column)
{
    if (column != MAPPINGSEQUENCEEDIT_MAPPINGKEY_COLUMN) {
        return;
    }

    MappingSequenceEditTableWidget *table = ui->mappingSequenceEditTable;

    if (row < 0 || row >= table->rowCount()) {
        return;
    }

    QTableWidgetItem *item = table->item(row, column);
    if (!item) {
        return;
    }

    QString newText = item->text();
    QString trimmed = newText;

    QString popupMessage;
    if (!validateOrAllowEmptyMappingKey(&trimmed, &popupMessage)) {
        // Roll back UI from the source-of-truth list.
        const QString oldText = (row >= 0 && row < m_MappingSequenceList.size()) ? m_MappingSequenceList.at(row) : QString();
        QSignalBlocker blocker(table);
        item->setText(oldText);
        // item->setToolTip(oldText);
        emitValidationFailurePopup(popupMessage);
        return;
    }

    // Commit into the source-of-truth list (only after validation).
    const QString oldCommitted = (row >= 0 && row < m_MappingSequenceList.size()) ? m_MappingSequenceList.at(row) : QString();
    const bool listWillChange = (row >= m_MappingSequenceList.size()) || (oldCommitted != trimmed);

    if (listWillChange) {
        ensureBaseSnapshotBeforeListChange();
    }

    if (row >= m_MappingSequenceList.size()) {
        QKeyMapperQtCompat::resizeQList(m_MappingSequenceList, row + 1);
    }
    m_MappingSequenceList[row] = trimmed;

    // Keep tooltip in sync for better UX.
    // if (item->toolTip() != trimmed) {
    //     item->setToolTip(trimmed);
    // }

    // Normalize UI text (e.g., remove spaces) without re-triggering cellChanged.
    if (newText != trimmed) {
        QSignalBlocker blocker(table);
        item->setText(trimmed);
        // item->setToolTip(trimmed);
    }

    if (listWillChange) {
        commitHistorySnapshotIfNeeded();