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/*=========================================================================
Program: Visualization Toolkit
Module: vtkWeakReference.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkWeakReference
* @brief Utility class to hold a weak reference to a vtkObject.
*
* Simple Set(...)/Get(...) interface. Used in numpy support to provide a
* reference to a vtkObject without preventing it from being collected.
*/
#ifndef vtkWeakReference_h
#define vtkWeakReference_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
#include "vtkWeakPointer.h"
class VTKCOMMONCORE_EXPORT vtkWeakReference : public vtkObject
{
public:
vtkTypeMacro(vtkWeakReference, vtkObject);
static vtkWeakReference *New();
vtkWeakReference();
~vtkWeakReference();
/**
* Set the vtkObject to maintain a weak reference to.
*/
void Set(vtkObject *object);
/**
* Get the vtkObject pointer or nullptr if the object has been collected.
*/
vtkObject* Get();
private:
vtkWeakPointer<vtkObject> Object;
};
#endif
// VTK-HeaderTest-Exclude: vtkWeakReference.h
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