Method setIndex

libs/command/kundo2stack.cpp:550–569

*/

void KUndo2QStack::setIndex(int idx, bool clean)
{
    bool was_clean = m_index == m_clean_index;

    if (idx != m_index) {
        m_index = idx;
        Q_EMIT indexChanged(m_index);
        Q_EMIT canUndoChanged(canUndo());
        Q_EMIT undoTextChanged(undoText());
        Q_EMIT canRedoChanged(canRedo());
        Q_EMIT redoTextChanged(redoText());
    }

    if (clean)
        m_clean_index = m_index;

    bool is_clean = m_index == m_clean_index;
    if (is_clean != was_clean)
        Q_EMIT cleanChanged(is_clean);
}

void KUndo2QStack::purgeRedoState()
{