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SeqNumCache.h

00001 /*
00002  * SeqNumCache
00003  *
00004  * Copyright (C) 2001 Barnaby Gray <barnaby@beedesign.co.uk>
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
00019  *
00020  */
00021 
00022 #ifndef SEQNUMCACHE_H
00023 #define SEQNUMCACHE_H
00024 
00025 #include <libicq2000/Cache.h>
00026 #include <libicq2000/events.h>
00027 
00028 #include <sigc++/signal_system.h>
00029 
00030 namespace ICQ2000 {
00031 
00032   class SeqNumCache : public Cache<unsigned short, MessageEvent*> {
00033    public:
00034     SeqNumCache() { }
00035     ~SeqNumCache()
00036     {
00037       removeAll();
00038     }
00039     
00040     void expireItem(const SeqNumCache::literator& l) {
00041       expired.emit( (*l).getValue() );
00042       Cache<unsigned short, MessageEvent*>::expireItem(l);
00043     }
00044 
00045     SigC::Signal1<void,MessageEvent*> expired;
00046   };
00047   
00048 }
00049 
00050 #endif

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