arrowcontrol.cpp

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#include <semf/communication/esh/arrowcontrol.h>
 
namespace semf::esh
{
ArrowControl::ArrowControl(Printer& printer, const int& count, bool echo)
: m_printer(printer),
  m_count(count),
  m_echo(echo)
{
}
 
void ArrowControl::start()
{
    if (m_busy)
    {
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::Start_IsBusy)));
        return;
    }
    m_busy = true;
 
    m_printer.dataAvailable.connect(m_onSecondCharSlot);
    m_printer.readCharacter();
}
 
void ArrowControl::onSecondChar(char c)
{
    m_printer.dataAvailable.disconnect(m_onSecondCharSlot);
    if (c != '[')
    {
        m_busy = false;
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::OnSecondChar_UnexpectedChar)));
        return;
    }
 
    m_printer.dataAvailable.connect(m_onThirdCharSlot);
    m_printer.readCharacter();
}
 
void ArrowControl::onThirdChar(char c)
{
    m_printer.dataAvailable.disconnect(m_onThirdCharSlot);
    if (c != 'A' && c != 'B')
    {
        m_busy = false;
        error(Error(kSemfClassId, static_cast<uint8_t>(ErrorCode::OnThirdChar_UnexpectedChar)));
        return;
    }
 
    m_c = c;
    m_printer.dataWritten.connect(m_onCleared);
    m_printer.print("\b \b", m_echo ? m_count : m_count + 4);
}
 
void ArrowControl::onCleared()
{
    m_printer.dataWritten.disconnect(m_onCleared);
    m_busy = false;
    if (m_c == 'A')
    {
        up();
    }
    else
    {
        down();
    }
}
}  // namespace semf::esh