khanat-code-old/code/nel/src/misc/event_server.cpp
2010-08-20 13:27:17 +02:00

167 lines
4.5 KiB
C++

// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
// Copyright (C) 2010 Winch Gate Property Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "stdmisc.h"
#include "nel/misc/event_server.h"
#include "nel/misc/event_listener.h"
#include "nel/misc/event_emitter.h"
#include "nel/misc/events.h"
namespace NLMISC {
/*------------------------------------------------------------------*\
CEventServer()
\*------------------------------------------------------------------*/
CEventServer::CEventServer()
{
_Pumping= false;
}
CEventServer::~CEventServer()
{
std::list<CEvent*>::iterator itev = _Events.begin();
while(itev!=_Events.end())
{
delete *itev;
itev=_Events.erase (itev);
}
}
/*------------------------------------------------------------------*\
postEvent()
\*------------------------------------------------------------------*/
void CEventServer::postEvent(CEvent * event)
{
_Events.push_back(event);
}
/*------------------------------------------------------------------*\
pump()
\*------------------------------------------------------------------*/
void CEventServer::pump(bool allWindows)
{
// Avoid recurse (can arise if the process of an event decide to pump the server again....)
nlassert(!_Pumping);
_Pumping= true;
// **** submit emitters events
std::list<IEventEmitter*>::iterator item = _Emitters.begin();
// getting events from emitters
while(item!=_Emitters.end())
{
// ask emitters to submit their events to server
(*item)->submitEvents(*this, allWindows);
item++;
}
// **** process to listeners
std::list<CEvent*>::iterator itev = _Events.begin();
while(itev!=_Events.end())
{
// pump event
bool bDelete=pumpEvent(*itev);
if (bDelete)
delete *itev;
itev=_Events.erase (itev);
}
// end of pumping
_Pumping= false;
}
/*------------------------------------------------------------------*\
pumpEvent()
\*------------------------------------------------------------------*/
bool CEventServer::pumpEvent(CEvent* event)
{
// taking id
uint64 id = (uint64) *event;
// looking for the first occurence of id
mapListener::iterator it = _Listeners.find(id);
// calling every callbacks
while(it!=_Listeners.end() && (uint64)(*it).first == id)
{
IEventListener *a = (IEventListener *)((*it).second);
a->process(*event);
it++;
}
// delete the pointer
return true;
}
/*------------------------------------------------------------------*\
addListener()
\*------------------------------------------------------------------*/
void CEventServer::addListener(CClassId id, IEventListener* listener )
{
_Listeners.insert( mapListener::value_type(id, listener));
}
/*------------------------------------------------------------------*\
removeListener()
\*------------------------------------------------------------------*/
void CEventServer::removeListener(CClassId id, IEventListener* listener )
{
// looking for the first occurence of id
mapListener::iterator it = _Listeners.find(id);
// looking for occurence with the right callback
while(it!=_Listeners.end() && (*it).first == id)
{
if((*it).second==listener)
{
// erasing pair
_Listeners.erase(it);
return;
}
it++;
}
}
/*------------------------------------------------------------------*\
addEmitter()
\*------------------------------------------------------------------*/
void CEventServer::addEmitter(IEventEmitter * emitter)
{
_Emitters.push_back(emitter);
}
/*------------------------------------------------------------------*\
removeEmitter()
\*------------------------------------------------------------------*/
void CEventServer::removeEmitter(IEventEmitter * emitter)
{
_Emitters.remove(emitter);
}
} // NLMISC