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csevcord.h
00001 /* 00002 Copyright (C) 2000 by Jorrit Tyberghein 00003 Written by Michael Dale Long. 00004 00005 This library is free software; you can redistribute it and/or 00006 modify it under the terms of the GNU Library General Public 00007 License as published by the Free Software Foundation; either 00008 version 2 of the License, or (at your option) any later version. 00009 00010 This library is distributed in the hope that it will be useful, 00011 but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00013 Library General Public License for more details. 00014 00015 You should have received a copy of the GNU Library General Public 00016 License along with this library; if not, write to the Free 00017 Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 00018 */ 00019 00020 #ifndef __CS_CSEVCORD_H__ 00021 #define __CS_CSEVCORD_H__ 00022 00023 #include "csextern.h" 00024 #include "csutil/scf.h" 00025 #include "iutil/event.h" 00026 00027 struct iEventHandler; 00028 00029 class csEventOutlet; 00030 00034 class CS_CRYSTALSPACE_EXPORT csEventCord : public iEventCord 00035 { 00036 protected: 00038 volatile bool pass; 00039 00041 int category, subcategory; 00042 00046 struct PluginData 00047 { 00048 iEventHandler *plugin; 00049 int priority; 00050 PluginData *next; 00051 }; 00052 00054 PluginData *plugins; 00055 00057 volatile int SpinLock; 00058 00060 inline void Lock() { while (SpinLock) {} SpinLock++; } 00062 inline void Unlock() { SpinLock--; } 00063 00065 friend class csEventOutlet; 00066 bool Post(iEvent*); 00067 00068 public: 00069 SCF_DECLARE_IBASE; 00070 00072 csEventCord(int category, int subcategory); 00073 00075 virtual ~csEventCord(); 00076 00078 virtual int Insert(iEventHandler*, int priority); 00079 00081 virtual void Remove(iEventHandler*); 00082 00084 virtual bool GetPass() const { return pass; } 00085 00087 virtual void SetPass(bool flag) { pass = flag; } 00088 00090 virtual int GetCategory() const { return category; } 00091 00093 virtual int GetSubcategory() const { return subcategory; } 00094 }; 00095 00096 #endif // __CS_CSEVCORD_H__
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