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00001 
00007 /* Copyright, 2000-2002 Nevrax Ltd.
00008  *
00009  * This file is part of NEVRAX NEL.
00010  * NEVRAX NEL is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2, or (at your option)
00013  * any later version.
00014 
00015  * NEVRAX NEL is distributed in the hope that it will be useful, but
00016  * WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018  * General Public License for more details.
00019 
00020  * You should have received a copy of the GNU General Public License
00021  * along with NEVRAX NEL; see the file COPYING. If not, write to the
00022  * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
00023  * MA 02111-1307, USA.
00024  */
00025 
00026 #include "stdmisc.h"
00027 #include "nel/misc/event_emitter_multi.h"
00028 
00029 
00030 namespace NLMISC 
00031 {
00032 
00033 // a predicate to find an emitter in a list
00034 struct EmitterEqualPred
00035 {
00036         EmitterEqualPred(IEventEmitter *e) : E(e) {}
00037         IEventEmitter *E;
00038         bool operator()(const std::pair<IEventEmitter *, bool> &el)
00039         {
00040                 return el.first == E;
00041         }
00042 };
00043 
00045 CEventEmitterMulti::~CEventEmitterMulti()
00046 {
00047         for (TEmitterCont::iterator it = _Emitters.begin(); it != _Emitters.end(); ++it)
00048         {
00049                 if (it->second) // asked "must Delete' ?
00050                 {
00051                         delete it->first;
00052                 }
00053         }
00054 }
00055 
00057 void    CEventEmitterMulti::addEmitter(IEventEmitter *e, bool mustDelete)
00058 {
00059         nlassert(e != this); // avoid infinite recursion
00060         nlassert(!isEmitter(e));
00061         _Emitters.push_back(std::make_pair(e, mustDelete));
00062 }
00063 
00065 void    CEventEmitterMulti::removeEmitter(IEventEmitter *e)
00066 {
00067         TEmitterCont::iterator it = std::find_if(_Emitters.begin(), _Emitters.end(), EmitterEqualPred(e));
00068         nlassert(it!= _Emitters.end());
00069         if (it->second)
00070         {
00071                 delete it->first;
00072         }
00073         _Emitters.erase(it);
00074 }
00075 
00077 bool    CEventEmitterMulti::isEmitter(IEventEmitter *e) const
00078 {
00079         TEmitterCont::const_iterator it = std::find_if(_Emitters.begin(), _Emitters.end(), EmitterEqualPred(e));
00080         return it != _Emitters.end();
00081 }
00082 
00084 void CEventEmitterMulti::submitEvents(CEventServer &server)
00085 {
00086         for (TEmitterCont::iterator it = _Emitters.begin(); it != _Emitters.end(); ++it)
00087         {
00088                 it->first->submitEvents(server);
00089         }
00090 }
00092 IEventEmitter *CEventEmitterMulti::getEmitter(uint index)
00093 {
00094         nlassert(index < _Emitters.size());
00095         return _Emitters[index].first;
00096 }
00097 
00098 
00099         
00100 
00101 
00102 } // NLMISC
event_emitter_multi.cpp
