Collection.h

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00001 #ifndef TAGCOLL_COLLECTION_H
00002 #define TAGCOLL_COLLECTION_H
00003 
00008 /*
00009  * Copyright (C) 2003,2004,2005  Enrico Zini <enrico@debian.org>
00010  *
00011  * This library is free software; you can redistribute it and/or
00012  * modify it under the terms of the GNU Lesser General Public
00013  * License as published by the Free Software Foundation; either
00014  * version 2.1 of the License, or (at your option) any later version.
00015  *
00016  * This library is distributed in the hope that it will be useful,
00017  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00019  * Lesser General Public License for more details.
00020  *
00021  * You should have received a copy of the GNU Lesser General Public
00022  * License along with this library; if not, write to the Free Software
00023  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
00024  */
00025 
00026 #include <tagcoll/ReadonlyCollection.h>
00027 #include <tagcoll/Consumer.h>
00028 
00029 namespace Tagcoll
00030 {
00031 template<typename T1, typename T2> class PatchList;
00032 
00040 template<typename ITEM, typename TAG>
00041 class Collection : public Consumer<ITEM, TAG>, public ReadonlyCollection<ITEM, TAG>
00042 {
00043 protected:
00044     /*
00045      * Implementation note: to avoid problems with classes implementing only
00046      * some of the virtual methods, they are given different names.  The common
00047      * 'comsume' methods are just inlined calls to the right virtual functions,
00048      * and are a way of keeping the unoverridden methods from being hidden.
00049      */
00050 
00051     void consumeItemUntagged(const ITEM&) {}
00052     void consumeItemsUntagged(const OpSet<ITEM>&) {}
00053 
00054 public:
00055     virtual ~Collection() {}
00056     
00069     virtual void applyChange(const PatchList<ITEM, TAG>& change) = 0;
00070 };
00071 
00072 };
00073 
00074 // vim:set ts=4 sw=4:
00075 #endif

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