GDCM  2.0.18
gdcmSubject.h
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00001 /*=========================================================================
00002 
00003   Program: GDCM (Grassroots DICOM). A DICOM library
00004 
00005   Copyright (c) 2006-2011 Mathieu Malaterre
00006   All rights reserved.
00007   See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
00008 
00009      This software is distributed WITHOUT ANY WARRANTY; without even
00010      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00011      PURPOSE.  See the above copyright notice for more information.
00012 
00013 =========================================================================*/
00014 #ifndef GDCMSUBJECT_H
00015 #define GDCMSUBJECT_H
00016 
00017 #include "gdcmObject.h"
00018 
00019 namespace gdcm
00020 {
00021 class Event;
00022 class Command;
00023 class SubjectInternals;
00028 class GDCM_EXPORT Subject : public Object
00029 {
00030 public:
00031   Subject();
00032   ~Subject();
00033 
00042   unsigned long AddObserver(const Event & event, Command *);
00043   unsigned long AddObserver(const Event & event, Command *) const;
00044 
00050   Command* GetCommand(unsigned long tag);
00051 
00053   void InvokeEvent( const Event & );
00054 
00057   void InvokeEvent( const Event & ) const;
00058 
00060   void RemoveObserver(unsigned long tag);
00061 
00063   void RemoveAllObservers();
00064 
00066   bool HasObserver( const Event & event ) const;
00067 
00068 protected:
00069 
00070 private:
00071   SubjectInternals *Internals;
00072 private:
00073 };
00074 
00075 } // end namespace gdcm
00076 
00077 #endif //GDCMSUBJECT_H

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