itkEventObject.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkEventObject_h
#define __itkEventObject_h

#include "itkIndent.h"

namespace itk
{
class ITKCommon_EXPORT EventObject
{
public:
  EventObject() {}

  EventObject(const EventObject &){}

  virtual ~EventObject() {}

  virtual EventObject * MakeObject() const = 0;

  virtual void Print(std::ostream & os) const;

  virtual const char * GetEventName(void) const = 0;

  virtual bool CheckEvent(const EventObject *) const = 0;

protected:
  virtual void PrintSelf(std::ostream & os, Indent indent) const;

  virtual void PrintHeader(std::ostream & os, Indent indent) const;

  virtual void PrintTrailer(std::ostream & os, Indent indent) const;

private:
  typedef  EventObject *EventFactoryFunction ( );
  void operator=(const EventObject &);
};

inline std::ostream & operator<<(std::ostream & os, EventObject & e)
{
  ( &e )->Print(os);
  return os;
}

#define itkEventMacro(classname, super)                              \

                                            \
#define itkEventMacro(classname, super)                              \
  class ITK_ABI_EXPORT classname:public super                        \
  {                                                                  \
public:                                                              \
    typedef classname Self;                                          \
    typedef super     Superclass;                                    \
    classname() {}                                                   \
    virtual ~classname() {}                                          \
    virtual const char *GetEventName() const { return #classname; } \
    virtual bool CheckEvent(const::itk::EventObject * e) const       \
               { return ( dynamic_cast< const Self * >( e ) != NULL ); }         \
    virtual::itk::EventObject *MakeObject() const                    \
               { return new Self; }                                  \
    classname(const Self &s):super(s){};                             \
private:                                                             \
    void operator=(const Self &);                                    \
  };


itkEventMacro(NoEvent, EventObject)
itkEventMacro(AnyEvent, EventObject)
itkEventMacro(DeleteEvent, AnyEvent)
itkEventMacro(StartEvent, AnyEvent)
itkEventMacro(EndEvent, AnyEvent)
itkEventMacro(ProgressEvent, AnyEvent)
itkEventMacro(ExitEvent, AnyEvent)
itkEventMacro(AbortEvent, AnyEvent)
itkEventMacro(ModifiedEvent, AnyEvent)
itkEventMacro(InitializeEvent, AnyEvent)
itkEventMacro(IterationEvent, AnyEvent)
itkEventMacro(PickEvent, AnyEvent)
itkEventMacro(StartPickEvent, PickEvent)
itkEventMacro(EndPickEvent, PickEvent)
itkEventMacro(AbortCheckEvent, PickEvent)
itkEventMacro(FunctionEvaluationIterationEvent, IterationEvent)
itkEventMacro(GradientEvaluationIterationEvent, IterationEvent)
itkEventMacro(FunctionAndGradientEvaluationIterationEvent, IterationEvent)

itkEventMacro(UserEvent, AnyEvent)
} // end namespace itk

#endif