/// <summary>
/// Constructs a new message object, taking a logged message
/// from the transmission history
/// </summary>
/// <param name="loggedMessage"></param>
internal MessageDecoder(TransmissionRecord loggedMessage)
{
// decode the message, setting form properties
this.Flags = new List <bool> {
false, false, false, false, false
};
var len = loggedMessage.Message.Length;
var msg = loggedMessage.Message;
// sort out ID
if (len >= 2)
{
this.ID = "0x" + msg[0] + msg[1];
}
// sort out type and flags
if (len >= 4)
{
var meta = Convert.ToInt16(msg[2].ToString() + msg[3].ToString(), 16);
this.TypeOfMessage = (MessageType)(meta >> 5);
// if it is an instruction get the type before we bust up the flags
if (this.TypeOfMessage == MessageType.Instruction)
{
this.TypeOfInstruction = (InstructionType)(meta & 0x1F);
}
else
{
this.TypeOfInstruction = InstructionType.None;
}
for (var i = 4; i >= 0; --i)
{
this.Flags[i] = (meta & 1) == 1;
meta >>= 1;
}
}
// get the timestamp
if (len >= 12)
{
this.Timestamp = (long)Convert.ToInt64(msg.Substring(4, 8), 16);
}
// and the rest is payload
if (len > 12)
{
this.Payload = msg.Substring(12);
}
else
{
this.Payload = "empty";
}
}
/// <summary>
/// Logs a message to the terminal box
/// </summary>
/// <param name="message"></param>
void LogMessage(string message, TransmissionType transmissionType)
{
if (this.InvokeRequired)
{
this.BeginInvoke(new LogMessageDelegate(this.LogMessage), message, transmissionType);
return;
}
// create a new transmission record
var record = new TransmissionRecord(transmissionType, message);
this.transmissionHistory.Add(record);
// add the message to the UI
var lb = transmissionType == TransmissionType.ReceivedMessage ? this.ReceivedListBox : this.SentListBox;
var other = transmissionType == TransmissionType.ReceivedMessage ? this.SentListBox : this.ReceivedListBox;
other.Items.Add("");
lb.Items.Add(record.ToString());
lb.SelectedIndex = lb.Items.Count - 1;
}
