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/*=========================================================================
Program: Visualization Toolkit
Module: vtkArrayIterator.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.
=========================================================================*/
// .NAME vtkArrayIterator - Abstract superclass to iterate over elements
// in an vtkAbstractArray.
//
// .SECTION Description
// vtkArrayIterator is used to iterate over elements in any
// vtkAbstractArray subclass. The vtkArrayIteratorTemplateMacro is used
// to centralize the set of types supported by Execute methods. It also
// avoids duplication of long switch statement case lists.
//
// Note that in this macro VTK_TT is defined to be the type of the
// iterator for the given type of array. One must include the
// vtkArrayIteratorIncludes.h header file to provide for extending of
// this macro by addition of new iterators.
//
// Example usage:
// \code
// vtkArrayIter* iter = array->NewIterator();
// switch(array->GetDataType())
// {
// vtkArrayIteratorTemplateMacro(myFunc(static_cast<VTK_TT*>(iter), arg2));
// }
// iter->Delete();
// \endcode
#ifndef vtkArrayIterator_h
#define vtkArrayIterator_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
class vtkAbstractArray;
class VTKCOMMONCORE_EXPORT vtkArrayIterator : public vtkObject
{
public:
vtkTypeMacro(vtkArrayIterator, vtkObject);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Set the array this iterator will iterate over.
// After Initialize() has been called, the iterator is valid
// so long as the Array has not been modified
// (except using the iterator itself).
// If the array is modified, the iterator must be re-intialized.
virtual void Initialize(vtkAbstractArray* array) = 0;
// Description
// Get the data type from the underlying array. Returns 0 if
// no underlying array is present.
virtual int GetDataType()=0;
protected:
vtkArrayIterator();
~vtkArrayIterator();
private:
vtkArrayIterator(const vtkArrayIterator&); // Not implemented.
void operator=(const vtkArrayIterator&); // Not implemented.
};
#endif
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