/** \file IEventOwner.h
 **	\date  2005-12-07
 **	\author grymse@alhem.net
**/
/*
Copyright (C) 2005,2007  Anders Hedstrom

This library is made available under the terms of the GNU GPL.

If you would like to use this library in a closed-source application,
a separate license agreement is available. For information about 
the closed-source license agreement for the C++ sockets library,
please visit http://www.alhem.net/Sockets/license.html and/or
email license@alhem.net.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/
#ifndef _SOCKETS_IEventOwner_H
#define _SOCKETS_IEventOwner_H

#include "sockets-config.h"
#include "IEventHandler.h"

#ifdef SOCKETS_NAMESPACE
namespace SOCKETS_NAMESPACE {
#endif


/** Any class that wants to use timer events inherits this.
	\ingroup timer */
class IEventOwner
{
public:
	IEventOwner(IEventHandler& h);
	virtual ~IEventOwner();

	/** Schedule event.
		\param sec Seconds until event
		\param usec Microseconds until event
		\return Event ID */
	long AddEvent(long sec,long usec);
	/** Clear all events scheduled by this owner. */
	void ClearEvents();
	/** Remove one event scheduled by this owner.
		\param eid Event ID to remove */
	void RemoveEvent(long eid);
	/** Event callback will fire when time is up. */
	virtual void OnEvent(int) = 0;

	IEventHandler& EventHandler();
	void SetHandlerInvalid(bool x = true) { m_handler_invalid = x; }

	void Increase();
	void Decrease();

private:
	IEventHandler& m_event_handler;
	bool m_handler_invalid;
	int m_events;
};



#ifdef SOCKETS_NAMESPACE
}
#endif

#endif // _SOCKETS_IEventOwner_H
