OMKEventAssociationList.cpp

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/*
 * This file is part of openMask © INRIA, CNRS, Universite de Rennes 1 1993-2002, thereinafter the Software
 * 
 * The Software has been developped within the Siames Project. 
 * INRIA, the University of Rennes 1 and CNRS jointly hold intellectual property rights
 * 
 * The Software has been registered with the Agence pour la Protection des
 * Programmes (APP) under registration number IDDN.FR.001.510008.00.S.P.2001.000.41200
 *  
 * This file may be distributed under the terms of the Q Public License
 * version 1.0 as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * Licensees holding valid specific licenses issued by INRIA, CNRS or Université de Rennes 1 
 * for the software may use this file in accordance with that specific license
 *
 */
#include "OMKEventAssociationList.h"

using namespace std ;
using namespace OMK ;

EventAssociationList::EventAssociationList() 
{

}

EventAssociationList::~EventAssociationList() 
{

}

Event * EventAssociationList::remove (Event * event)
{
   Event * result = NULL ;
   std::list<pair<Event *,Event * > >::iterator i = _associatedEventList.begin() ;
   std::list<pair<Event *,Event * > >::iterator toRemove ;
   while (i != _associatedEventList.end() )
      {
        if ( ( i->first = event ) ) 
            {
               result = i->second ;
               toRemove = i ;
               i = _associatedEventList.end() ;
               _associatedEventList.erase (toRemove) ;
            }
        else if ( ( i->second = event ) )
            {
               result = i->first ;
               toRemove = i ;
               i = _associatedEventList.end() ;
               _associatedEventList.erase (toRemove) ;
            }
        else
            {
               i++ ;
            }
      }
   return result ;
}

void EventAssociationList::associate (Event * evt1, Event * evt2)
{
   //push_front because it will probably be the next removed element and that removal starts at the beginning of the list
   _associatedEventList.push_front( pair<Event *,Event * > (evt1, evt2) ) ;
}

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