//  TNetworkEventHandler.cp - Macintosh OpenTransport network class object

// 

// Apple Macintosh Developer Technical Support

// Written by:  Vinne Moscaritolo

//

//  Copyright (work in progress)  Apple Computer, Inc All rights reserved.

//

// You may incorporate this sample code into your applications without

// restriction, though the sample code has been provided "AS IS" and the

// responsibility for its operation is 100% yours.  However, what you are

// not permitted to do is to redistribute the source as "DSC Sample Code"

// after having made changes. If you're going to re-distribute the source,

// we require that you make it clear in the source that the code was

// descended from Apple Sample Code, but that you've made changes.

// 

#include "TNetworkEventHandler.h"

// ---------------------------------------------------------------------------

//   TNetworkEventHandler::fgActiveList

// ---------------------------------------------------------------------------

//  List of active TNetworkEventHandler objects

//

TList   TNetworkEventHandler::fgActiveList; 

// ---------------------------------------------------------------------------

//   TNetworkEventHandler

// ---------------------------------------------------------------------------

//  Default Constructor

TNetworkEventHandler::TNetworkEventHandler()

{

// add this to the end list of network event handlers   

    fgActiveList.Append(this);

}

// ---------------------------------------------------------------------------

//   ~TNetworkEventHandler

// ---------------------------------------------------------------------------

//  Destructor

TNetworkEventHandler::~TNetworkEventHandler()

{

    TNetworkEvent*  aEvent;

// dispose of any outstanding events..

    while( aEvent = (TNetworkEvent*) fEventQueue.Dequeue() ) 

            delete aEvent;

// remove this from list of network event handlers  

    fgActiveList.Remove(this);

};

// ---------------------------------------------------------------------------

//   TNetworkEventHandler::ProcessAnEvent

// ---------------------------------------------------------------------------

//  Process Network Event for this handler

void TNetworkEventHandler::ProcessEvents()

{

    TNetworkEvent*  aEvent;

    TLifo       eventList;

    if(! fEventQueue.IsEmpty()){

// get head of event list

        eventList.fHead = fEventQueue.StealList();

        eventList.Reverse();

// Process each event on list   

        while( aEvent = (TNetworkEvent*) eventList.Dequeue() )

            {

                    HandleEvent(aEvent);

                    delete aEvent;

                }       

        }

}

// ---------------------------------------------------------------------------

//   TNetworkEventHandler::ScanEventHandlerQueue

// ---------------------------------------------------------------------------

//  Scan Network Event list looking for things to do

void TNetworkEventHandler::ScanEventHandlerQueue()

{

    TNetworkEventHandler *aTask;

    for (aTask =  (TNetworkEventHandler*) fgActiveList.GetFirst(); 

          aTask ;

          aTask = (TNetworkEventHandler*) aTask->Next())

        {

            aTask->ProcessEvents();

        }           

}