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