TMessageHandler.h
// @(#)root/base:$Name$:$Id$
// Author: Rene Brun 11/11/99
/*************************************************************************
* Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
* All rights reserved. *
* *
* For the licensing terms see $ROOTSYS/LICENSE. *
* For the list of contributors see $ROOTSYS/README/CREDITS. *
*************************************************************************/
#ifndef ROOT_TMessageHandler
#define ROOT_TMessageHandler
//////////////////////////////////////////////////////////////////////////
// //
// TMessageHandler //
// //
// Handle messages that might be generated by the system. //
// By default a handler only keeps track of the different messages //
// generated for a specific class. By deriving from this class and //
// overriding Notify() one can implement custom message handling. //
// In Notify() one has access to the message id and the object //
// generating the message. One can install more than one message //
// handler per class. A message handler can be removed or again //
// added when needed. //
// //
//////////////////////////////////////////////////////////////////////////
#ifndef ROOT_TNamed
#include "TNamed.h"
#endif
class TMessageHandler : public TNamed {
protected:
TClass *fClass; // class for which message has to be handled
TObject *fMessObj; // object generating message
Int_t fMessId; // message id (often matching specific enum in fClass)
Int_t fSize; // number of different messages handled
Int_t *fCnts; // count per message
Int_t *fMessIds; // message ids
Bool_t fDerived; // if true handle messages also for derived classes
public:
TMessageHandler(TClass *cl, Bool_t derived = kTRUE);
TMessageHandler(const char *cl, Bool_t derived = kTRUE);
virtual ~TMessageHandler();
virtual void Add();
Int_t GetSize() const { return fSize; }
virtual Int_t GetMessageCount(Int_t messId) const;
virtual Int_t GetTotalMessageCount() const;
Bool_t HandleDerived() const { return fDerived; }
virtual void HandleMessage(Int_t id, TObject *obj);
virtual Bool_t Notify();
virtual void Print(Option_t *option= "");
virtual void Remove();
ClassDef(TMessageHandler,0) // Generic message handler
};
#endif