#ifndef COIN_SOSENSORMANAGER_H
#define COIN_SOSENSORMANAGER_H

/**************************************************************************\
 *
 *  This file is part of the Coin 3D visualization library.
 *  Copyright (C) 1998-2007 by Systems in Motion.  All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  ("GPL") version 2 as published by the Free Software Foundation.
 *  See the file LICENSE.GPL at the root directory of this source
 *  distribution for additional information about the GNU GPL.
 *
 *  For using Coin with software that can not be combined with the GNU
 *  GPL, and for taking advantage of the additional benefits of our
 *  support services, please contact Systems in Motion about acquiring
 *  a Coin Professional Edition License.
 *
 *  See http://www.coin3d.org/ for more information.
 *
 *  Systems in Motion, Postboks 1283, Pirsenteret, 7462 Trondheim, NORWAY.
 *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
 *
\**************************************************************************/

#include <Inventor/SbBasic.h>

class SoDelayQueueSensor;
class SoTimerQueueSensor;
class SoTimerSensor;
class SbTime;

class COIN_DLL_API SoSensorManager {
public:
  SoSensorManager(void);
  ~SoSensorManager();

  void insertDelaySensor(SoDelayQueueSensor * s);
  void insertTimerSensor(SoTimerQueueSensor * s);
  void removeDelaySensor(SoDelayQueueSensor * s);
  void removeTimerSensor(SoTimerQueueSensor * s);

  void setChangedCallback(void (*sensorQueueChangedCB)(void *), void * data);

  void rescheduleTimer(SoTimerSensor * s);
  void removeRescheduledTimer(SoTimerQueueSensor * s);

  void processDelayQueue(SbBool isidle);
  void processImmediateQueue(void);
  void processTimerQueue(void);

  SbBool isDelaySensorPending(void);
  SbBool isTimerSensorPending(SbTime & tm);

  void setDelaySensorTimeout(const SbTime & t);
  const SbTime & getDelaySensorTimeout(void);

  int doSelect(int nfds, void * readfds, void * writefds,
               void * exceptfds, struct timeval * userTimeOut);

private:
  void notifyChanged(void);

  int mergeTimerQueues(void);
  int mergeDelayQueues(void);
  
  class SoSensorManagerP * pimpl;
  friend class SoSensorManagerP;
};

#endif // !COIN_SOSENSORMANAGER_H