private bool SlipReady()
{
IPrinterResponse response = Send(SlipRequest.CheckStatus(Part.SlipPaper));
if (response.Detail == null)
{
throw new PrinterOfflineException();
}
if (response.Detail[6] == '1')//Slip is not detected by TOF sensor
{
response.Data = "Slip is not detected by TOF sensor";
return(false);
}
if (response.Detail[5] == '1')//Slip is not detected by BOF sensor
{
response.Data = "Slip is not detected by BOF sensor";
return(false);
}
if (response.Detail[3] == '1')//Waits for slip insertion
{
response.Data = "Waits for slip insertion";
return(false);
}
return(true);
}
internal bool CheckConnection()
{
if (sp == null)
{
return(true);
}
//asking slip is not for slip request,
//it is only for to reach printer
IPrinterResponse response = Send(SlipRequest.CheckStatus(Part.SlipPaper));
if (response.Detail == null)
{
return(false);
}
return(true);
}
private IPrinterResponse WriteLine(string line)
{
IPrinterResponse responseOffline = Send(SlipRequest.CheckStatus(Part.Offline));
if (sp == null)
{
return(responseOffline);
}
if (responseOffline.Data == null && responseOffline.Detail == null)
{
throw new PowerFailureException();
}
if (!SlipReady())
{
DocumentRequested(new RequestSlipException(), new EventArgs());
WaitForSlip();
}
return(Send(SlipRequest.WriteLine(line)));
}