Method undo

src/external/qhexview/src/model/commands/replacecommand.cpp:12–16

}

void ReplaceCommand::undo() {
    m_buffer->replace(m_offset, m_olddata);
    Q_EMIT m_hexdocument->dataChanged(m_olddata, m_offset,
                                      QHexDocument::ChangeReason::Replace);
}

void ReplaceCommand::redo() {
    m_olddata = m_buffer->read(m_offset, m_data.length());