// Author: Valeri Fine   25/03/2004
#ifndef ROOT_TQtEventQueue
#define ROOT_TQtEventQueue

/****************************************************************************
** $Id: TQtEventQueue.h,v 1.1 2004/07/09 09:21:24 brun Exp $
**
** Copyright (C) 2004 by Valeri Fine. Brookhaven National Laboratory.
**                                    All rights reserved.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech AS of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
*****************************************************************************/

#include "GuiTypes.h"
#include <qptrlist.h> 

/////////////////////////////////////////////////////////////////////////////////
//
//  TQtEventQueue is a queue container of the pointers of Event_t structures 
//  created by TQtClientFilter class
//  If auto-deleting is turned on, all the items in a collection are deleted when 
//  the collection itself is deleted.
//  (for the full list of the members see: 
//  http://doc.trolltech.com/3.3/qptrlist.html)
//
/////////////////////////////////////////////////////////////////////////////////


class TQtEventQueue : public QPtrList<Event_t> {
   public:
      TQtEventQueue(bool autoDelete=true);
      TQtEventQueue(const TQtEventQueue &src): QPtrList<Event_t>(src) {;}
      virtual ~TQtEventQueue(){}
      void     enqueue(const Event_t *);
      Event_t *dequeue();
      int      RemoveItems(const Event_t *ev);

   protected:
      virtual int compareItems(QPtrCollection::Item item1, QPtrCollection::Item item2);
};
//______________________________________________________________________________
inline void TQtEventQueue::enqueue(const Event_t *ev)
{    append(ev);                              }
//______________________________________________________________________________
inline Event_t *TQtEventQueue::dequeue()
{       return isEmpty() ? 0 : take(0);                       }

#endif