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/*=========================================================================
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/VolViewCopyright.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 vtkAbstractIterator - is an iterator for vtkContainer subclasses
// .SECTION Description
// vtkAbstractIterator is a superclass of all container iterators.
// .SECTION See Also
// vtkContainer
// .SECTION Caveates
// VTK Iterators are not reliable when adding or deleting elements
// from the container. Use iterators for traversing only.
#ifndef __vtkAbstractIterator_h
#define __vtkAbstractIterator_h
#include "vtkObjectBase.h"
class vtkContainer;
template<class KeyType, class DataType>
class vtkAbstractIterator : public vtkObjectBase
{
friend class vtkContainer;
virtual const char* GetClassNameInternal() const { return "vtkAbstractIterator"; }
public:
// Description:
// Retrieve the key from the iterator. For lists, the key is the
// index of the element.
// This method returns VTK_OK if key was retrieved correctly.
//virtual int GetKey(KeyType&) = 0;
// Description:
// Retrieve the data from the iterator.
// This method returns VTK_OK if key was retrieved correctly.
//virtual int GetData(DataType&) = 0;
// Description:
// Retrieve the key and data of the current element.
// This method returns VTK_OK if key and data were retrieved correctly.
// virtual int GetKeyAndData(KeyType&, DataType&) = 0;
// Description:
// Set the container for this iterator.
void SetContainer(vtkContainer*);
// Description:
// Get the associated container.
vtkContainer *GetContainer() { return this->Container; }
// Description:
// Initialize the traversal of the container.
// Set the iterator to the "beginning" of the container.
//virtual void InitTraversal()=0;
// Description:
// Check if the iterator is at the end of the container. Return 1
// for yes, 0 for no.
//virtual int IsDoneWithTraversal()=0;
// Description:
// Increment the iterator to the next location.
//virtual void GoToNextItem() = 0;
protected:
vtkAbstractIterator();
virtual ~vtkAbstractIterator();
vtkContainer *Container;
vtkIdType ReferenceCount;
private:
vtkAbstractIterator(const vtkAbstractIterator&); // Not implemented
void operator=(const vtkAbstractIterator&); // Not implemented
};
#ifdef VTK_NO_EXPLICIT_TEMPLATE_INSTANTIATION
#include "vtkAbstractIterator.txx"
#endif
#endif
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