Method restoreHistorySnapshot

QKeyMapper/qmappingsequenceedit.cpp:370–407

}

void QMappingSequenceEdit::restoreHistorySnapshot(const MappingSequenceHistorySnapshot &snapshot)
{
    MappingSequenceEditTableWidget *table = ui->mappingSequenceEditTable;

    m_IsRestoringHistory = true;
    QSignalBlocker blocker(table);

    m_MappingSequenceList = snapshot.mappingSequenceList;
    refreshMappingSequenceEditTableWidget(table, m_MappingSequenceList);

    table->clearSelection();

    const int lastRow = table->rowCount() - 1;
    if (lastRow >= 0 && snapshot.selectionTopRow >= 0 && snapshot.selectionBottomRow >= 0) {
        const int top = qBound(0, snapshot.selectionTopRow, lastRow);
        const int bottom = qBound(top, snapshot.selectionBottomRow, lastRow);
        QTableWidgetSelectionRange range(top, 0, bottom, 0);
        table->setRangeSelected(range, true);
    }

    if (lastRow >= 0 && snapshot.currentRow >= 0) {
        const int r = qBound(0, snapshot.currentRow, lastRow);
        const int c = qBound(0, snapshot.currentColumn, table->columnCount() - 1);
        table->setCurrentCell(r, c, QItemSelectionModel::NoUpdate);
    }
    else {
        table->setCurrentCell(-1, -1);
    }

    // Restore scroll after selection/current to avoid scrollToItem overriding it.
    if (QScrollBar *sb = table->verticalScrollBar()) {
        sb->setValue(snapshot.verticalScrollValue);
    }

    m_IsRestoringHistory = false;

    updateUndoRedoButtonsEnabled();
}

void QMappingSequenceEdit::commitHistorySnapshotIfNeeded()
{