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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCollectionIterator.cxx
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.
=========================================================================*/
#include "vtkCollectionIterator.h"
#include "vtkObjectFactory.h"
#include "vtkCollection.h"
vtkStandardNewMacro(vtkCollectionIterator);
//----------------------------------------------------------------------------
vtkCollectionIterator::vtkCollectionIterator()
{
this->Element = 0;
this->Collection = 0;
}
//----------------------------------------------------------------------------
vtkCollectionIterator::~vtkCollectionIterator()
{
this->SetCollection(0);
}
//----------------------------------------------------------------------------
void vtkCollectionIterator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
if(this->Collection)
{
os << indent << "Collection: " << this->Collection << "\n";
}
else
{
os << indent << "Collection: (none)\n";
}
}
//----------------------------------------------------------------------------
void vtkCollectionIterator::SetCollection(vtkCollection* collection)
{
vtkSetObjectBodyMacro(Collection, vtkCollection, collection);
this->GoToFirstItem();
}
//----------------------------------------------------------------------------
void vtkCollectionIterator::GoToFirstItem()
{
if(this->Collection)
{
this->Element = this->Collection->Top;
}
else
{
this->Element = 0;
}
}
//----------------------------------------------------------------------------
void vtkCollectionIterator::GoToNextItem()
{
if(this->Element)
{
this->Element = this->Element->Next;
}
}
//----------------------------------------------------------------------------
int vtkCollectionIterator::IsDoneWithTraversal()
{
return (this->Element? 0:1);
}
//----------------------------------------------------------------------------
vtkObject* vtkCollectionIterator::GetCurrentObject()
{
if(this->Element)
{
return this->Element->Item;
}
return 0;
}
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