internal void QueueRequest(RequestEventArgs args)
{
System.Diagnostics.Debug.Assert(args != null);
lock ( m_qRQ )
{
if (m_bRQThreadPoolActive)
{
m_qRQ.Enqueue(args);
}
else
{
m_bRQThreadPoolActive = true;
ThreadPool.QueueUserWorkItem(new WaitCallback(RaiseRequest), args);
}
}
}
//m_bStopping, m_strHeadSign, m_straLastNSD, m_strLastSA set only in this method
private void RaiseRequest(object parm)
{
bool bContinue = true;
RequestEventArgs args = (RequestEventArgs)parm;
do
{
bool bRaise = true;
switch (args.Type)
{
case RequestType.DisplayNextStop:
switch (args.SubType)
{
case RequestSubType.None:
m_straLastNSD[0] = " ";
m_straLastNSD[1] = m_strLastSA = null;
args.Value = m_bStopping ? m_strNSDStopping : m_straLastNSD[0];
break;
case RequestSubType.ServiceAlert:
m_strLastSA = args.Value.ToString();
if (m_bStopping)
{
bRaise = false;
}
break;
default:
switch (args.SubType)
{
case RequestSubType.NextStop:
m_straLastNSD[0] = args.Value.ToString();
m_straLastNSD[1] = null;
m_strLastSA = null;
break;
case RequestSubType.NextStopConn:
m_straLastNSD = (string[])args.Value;
m_strLastSA = null;
break;
case RequestSubType.Stopping:
m_bStopping = (bool)args.Value;
break;
}
if (m_bStopping)
{
if (m_straLastNSD[0].Length > 1 || (m_straLastNSD[0].Length > 0 && m_straLastNSD[0][0] != ' '))
{
args.Value = m_strNSDStopping + m_strNSDStoppingConcat + m_straLastNSD[0];
}
else
{
args.Value = m_strNSDStopping;
}
}
else if (m_strLastSA != null)
{
args.Value = m_strLastSA;
}
else if (m_straLastNSD[1] != null)
{
args.Value = m_straLastNSD[0] + m_straLastNSD[1];
}
else
{
args.Value = m_straLastNSD[0];
}
break;
}
break;
case RequestType.HeadSign:
{
if (m_strHeadSign != args.Value.ToString())
{
m_strHeadSign = args.Value.ToString();
}
else
{
bRaise = false;
}
break;
}
}
if (bRaise)
{
EventHandler <RequestEventArgs> handler = Request;
if (handler != null)
{
handler(null, args);
}
}
lock ( m_qRQ )
{
if (m_qRQ.Count == 0)
{
args = null;
}
else
{
args = m_qRQ.Dequeue();
}
if (args == null)
{
bContinue = m_bRQThreadPoolActive = false;
}
}
}while(bContinue);
}
