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Observer.hpp

00001 #if !defined(__OBSERVER_HPP) 00002 #define __OBSERVER_HPP 00003 00004 /* 00005 CoreLinux++ 00006 Copyright (C) 2000 CoreLinux Consortium 00007 00008 The CoreLinux++ Library is free software; you can redistribute it and/or 00009 modify it under the terms of the GNU Library General Public License as 00010 published by the Free Software Foundation; either version 2 of the 00011 License, or (at your option) any later version. 00012 00013 The CoreLinux++ Library Library is distributed in the hope that it will 00014 be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of 00015 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00016 Library General Public License for more details. 00017 00018 You should have received a copy of the GNU Library General Public 00019 License along with the GNU C Library; see the file COPYING.LIB. If not, 00020 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, 00021 Boston, MA 02111-1307, USA. 00022 */ 00023 00024 #if !defined(__COMMON_HPP) 00025 #include <Common.hpp> 00026 #endif 00027 00028 #if !defined(__EVENT_HPP) 00029 #include <Event.hpp> 00030 #endif 00031 00032 00033 namespace corelinux 00034 { 00035 DECLARE_CLASS( Subject ); 00036 DECLARE_CLASS( Observer ); 00037 00044 class Observer 00045 { 00046 public: 00047 00048 // 00049 // Constructors and destructor 00050 // 00051 00056 Observer( void ) ; 00057 00063 Observer( ObserverCref ); 00064 00066 00067 virtual ~Observer( void ); 00068 00069 // 00070 // Operator overloads 00071 // 00072 00074 00075 ObserverRef operator=( ObserverCref ); 00076 00078 00079 bool operator==( ObserverCref ) const; 00080 00082 00083 bool operator!=( ObserverCref ) const; 00084 // 00085 // Accessors 00086 // 00087 00088 00089 // 00090 // Mutators 00091 // 00092 00100 virtual void event( Event<Identifier> * ) 00101 throw ( NullPointerException ); 00102 00103 protected: 00104 00105 private: 00106 00107 }; 00108 } 00109 00110 #endif // if !defined(__OBSERVER_HPP) 00111 00112 /* 00113 Common rcs information do not modify 00114 $Author: prudhomm $ 00115 $Revision: 1.2 $ 00116 $Date: 2000/08/31 22:52:20 $ 00117 $Locker: $ 00118 */ 00119 00120 00121

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