vtkObserverManager.h

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/*=auto=========================================================================
 
  Portions (c) Copyright 2005 Brigham and Women's Hospital (BWH) All Rights Reserved.
 
  See COPYRIGHT.txt
  or http://www.slicer.org/copyright/copyright.txt for details.
 
  Program:   3D Slicer
  Module:    $RCSfile: vtkObserverManager.h,v $
  Date:      $Date: 2006/01/08 04:48:05 $
  Version:   $Revision: 1.45 $
 
=========================================================================auto=*/
 
#ifndef __vtkObserverManager_h
#define __vtkObserverManager_h
 
// MRML includes
#include "vtkMRML.h"
 
// VTK includes
#include <vtkObject.h>
 
// STD includes
#include <map>
 
class vtkCallbackCommand;
class vtkIntArray;
class vtkFloatArray;
class vtkUnsignedLongArray;
 
#ifndef vtkObjectPointer
# define vtkObjectPointer(xx) (reinterpret_cast<vtkObject**>((xx)))
#endif

class VTK_MRML_EXPORT vtkObserverManager : public vtkObject
{
public:
  static vtkObserverManager* New();
  vtkTypeMacro(vtkObserverManager, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void SetObject(vtkObject** nodePtr, vtkObject* node);

  void SetAndObserveObject(vtkObject** nodePtr, vtkObject* node, float priority = 0.0, bool logWarningIfSameObservationExists = true);

  void SetAndObserveObjectEvents(vtkObject** nodePtr, vtkObject* node, vtkIntArray* events, vtkFloatArray* priorities = nullptr, bool logWarningIfSameObservationExists = true);

  void RemoveObjectEvents(vtkObject* nodePtr);

  void GetObjectEvents(vtkObject* nodePtr, vtkIntArray* events, vtkFloatArray* priorities);

  void ObserveObject(vtkObject* node, float priority = 0.0, bool logWarningIfSameObservationExists = true);

  void AddObjectEvent(vtkObject* node, unsigned long event, float priority = 0.0, bool logWarningIfSameObservationExists = true);

  void AddObjectEvents(vtkObject* nodePtr, vtkIntArray* events, vtkFloatArray* priorities = nullptr, bool logWarningIfSameObservationExists = true);

  vtkGetObjectMacro(Owner, vtkObject);
  void AssignOwner(vtkObject* owner) { this->Owner = owner; };
  vtkObject* GetObserver();
 
  vtkGetObjectMacro(CallbackCommand, vtkCallbackCommand);

  int GetObservationsCount(vtkObject* nodePtr, unsigned long event = 0);
 
protected:
  vtkObserverManager();
  ~vtkObserverManager() override;
  vtkObserverManager(const vtkObserverManager&);
  void operator=(const vtkObserverManager&);

  vtkObject* Owner;

  vtkCallbackCommand* CallbackCommand;
 
  std::map<vtkObject*, vtkUnsignedLongArray*> ObserverTags;
};
 
#endif