00001 #if !defined(__HANDLER_HPP) 00002 #define __HANDLER_HPP 00003 00004 /* 00005 CoreLinux++ 00006 Copyright (C) 1999,2000 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(__REQUEST_HPP) 00029 #include <Request.hpp> 00030 #endif 00031 00032 namespace corelinux 00033 { 00034 00035 DECLARE_CLASS( Handler ); 00036 00043 class Handler : public Synchronized 00044 { 00045 public: 00046 00047 // 00048 // Constructors and destructors 00049 // 00050 00052 00053 Handler( void ); 00054 00056 00057 Handler( HandlerCref ); 00058 00060 00061 virtual ~Handler( void ); 00062 00063 // 00064 // Operator overloads 00065 // 00067 00068 HandlerRef operator=( HandlerCref ); 00069 00071 00072 bool operator==( HandlerCref ) const; 00073 00074 // 00075 // Accessors 00076 // 00078 00079 HandlerPtr operator++( void ) ; 00080 00082 00083 HandlerPtr operator--( void ) ; 00084 00085 // 00086 // Mutators 00087 // 00088 00096 void succeedHandler( HandlerPtr ) throw ( Assertion ); 00097 00105 void precedeHandler( HandlerPtr ) throw ( Assertion ); 00106 00108 00109 void extractSelf( void ); 00110 00119 virtual void handleRequest( RequestPtr ) ; 00120 00121 protected: 00122 00132 virtual bool handlesType( RequestPtr ) = 0; 00133 00140 virtual void handle( RequestPtr ) = 0; 00141 00143 00144 void setSuccessor( HandlerPtr ) ; 00145 00147 00148 void setPredecessor( HandlerPtr ) ; 00149 00151 00152 void setSiblings( HandlerPtr, HandlerPtr ); 00153 protected: 00154 00156 00157 HandlerPtr theSuccessor; 00158 00160 00161 HandlerPtr thePredecessor; 00162 00163 private: 00164 00165 }; 00166 } 00167 #endif // if !defined(__HANDLER_HPP) 00168 00169 /* 00170 Common rcs information do not modify 00171 $Author: frankc $ 00172 $Revision: 1.1 $ 00173 $Date: 2000/04/27 14:32:21 $ 00174 $Locker: $ 00175 */ 00176 00177 00178