SUMO - Simulation of Urban MObility
MsgRetrievingFunction.h
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00001 /****************************************************************************/
00008 // Encapsulates an object's method for using it as a message retriever
00009 /****************************************************************************/
00010 // SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
00011 // Copyright (C) 2001-2012 DLR (http://www.dlr.de/) and contributors
00012 /****************************************************************************/
00013 //
00014 //   This file is part of SUMO.
00015 //   SUMO is free software: you can redistribute it and/or modify
00016 //   it under the terms of the GNU General Public License as published by
00017 //   the Free Software Foundation, either version 3 of the License, or
00018 //   (at your option) any later version.
00019 //
00020 /****************************************************************************/
00021 #ifndef MsgRetrievingFunction_h
00022 #define MsgRetrievingFunction_h
00023 
00024 
00025 // ===========================================================================
00026 // included modules
00027 // ===========================================================================
00028 #ifdef _MSC_VER
00029 #include <windows_config.h>
00030 #else
00031 #include <config.h>
00032 #endif
00033 
00034 #include <string>
00035 #include <sstream>
00036 #include <utils/iodevices/OutputDevice.h>
00037 #include "MsgHandler.h"
00038 
00039 
00040 // ===========================================================================
00041 // class definitions
00042 // ===========================================================================
00049 template< class T >
00050 class MsgRetrievingFunction : public OutputDevice {
00051 public:
00053     typedef void(T::* Operation)(const MsgHandler::MsgType, const std::string&);
00054 
00055 
00061     MsgRetrievingFunction(T* object, Operation operation, MsgHandler::MsgType type) :
00062         myObject(object),
00063         myOperation(operation),
00064         myMsgType(type) {}
00065 
00066 
00068     ~MsgRetrievingFunction() {}
00069 
00070 
00071 protected:
00074 
00083     std::ostream& getOStream() {
00084         return myMessage;
00085     }
00086 
00087 
00090     virtual void postWriteHook() {
00091         (myObject->*myOperation)(myMsgType, myMessage.str());
00092         myMessage.str("");
00093     }
00095 
00096 
00097 private:
00099     T* myObject;
00100 
00102     Operation myOperation;
00103 
00105     MsgHandler::MsgType myMsgType;
00106 
00108     std::ostringstream myMessage;
00109 
00110 };
00111 
00112 
00113 #endif
00114 
00115 /****************************************************************************/
00116 
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