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/*=========================================================================
Program: ParaView
Module: vtkPVCompositeDataInformationIterator.cxx
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.paraview.org/HTML/Copyright.html 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 "vtkPVCompositeDataInformationIterator.h"
#include "vtkObjectFactory.h"
#include "vtkPVDataInformation.h"
#include "vtkPVCompositeDataInformation.h"
#include <vector>
class vtkPVCompositeDataInformationIterator::vtkInternal
{
public:
struct vtkItem
{
vtkPVDataInformation* Node;
unsigned int NextChildIndex;
const char* Name;
vtkItem(vtkPVDataInformation* node, const char* name)
{
this->Node = node;
this->NextChildIndex = 0;
this->Name = name;
}
};
std::vector<vtkItem> Stack;
};
vtkStandardNewMacro(vtkPVCompositeDataInformationIterator);
vtkCxxSetObjectMacro(vtkPVCompositeDataInformationIterator, DataInformation, vtkPVDataInformation);
//----------------------------------------------------------------------------
vtkPVCompositeDataInformationIterator::vtkPVCompositeDataInformationIterator()
{
this->Internal = new vtkInternal();
this->DataInformation = 0;
this->CurrentFlatIndex = 0;
}
//----------------------------------------------------------------------------
vtkPVCompositeDataInformationIterator::~vtkPVCompositeDataInformationIterator()
{
this->SetDataInformation(0);
delete this->Internal;
this->Internal = 0;
}
//----------------------------------------------------------------------------
void vtkPVCompositeDataInformationIterator::InitTraversal()
{
this->Internal->Stack.clear();
if (this->DataInformation)
{
this->Internal->Stack.push_back(vtkInternal::vtkItem(this->DataInformation,
NULL));
}
this->CurrentFlatIndex = 0;
}
//----------------------------------------------------------------------------
vtkPVDataInformation* vtkPVCompositeDataInformationIterator::GetCurrentDataInformation()
{
if (this->IsDoneWithTraversal())
{
return NULL;
}
vtkInternal::vtkItem& item = this->Internal->Stack.back();
return item.Node;
}
//----------------------------------------------------------------------------
const char* vtkPVCompositeDataInformationIterator::GetCurrentName()
{
if (this->IsDoneWithTraversal())
{
return NULL;
}
vtkInternal::vtkItem& item = this->Internal->Stack.back();
return item.Name;
}
//----------------------------------------------------------------------------
bool vtkPVCompositeDataInformationIterator::IsDoneWithTraversal()
{
return (this->Internal->Stack.size() == 0);
}
//----------------------------------------------------------------------------
void vtkPVCompositeDataInformationIterator::GoToNextItem()
{
if (this->IsDoneWithTraversal())
{
return;
}
vtkInternal::vtkItem& item = this->Internal->Stack.back();
if (item.Node)
{
vtkPVCompositeDataInformation* cdInfo = item.Node->GetCompositeDataInformation();
if (cdInfo && cdInfo->GetDataIsComposite() && item.NextChildIndex < cdInfo->GetNumberOfChildren())
{
vtkPVDataInformation* current = cdInfo->GetDataInformation(item.NextChildIndex);
const char* name = cdInfo->GetName(item.NextChildIndex);
// current may be NULL for multi piece datasets.
item.NextChildIndex++;
this->CurrentFlatIndex++;
this->Internal->Stack.push_back(
vtkInternal::vtkItem(current, name));
return;
}
}
this->Internal->Stack.pop_back();
this->GoToNextItem();
}
//----------------------------------------------------------------------------
void vtkPVCompositeDataInformationIterator::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os, indent);
os << indent << "DataInformation: " << this->DataInformation << endl;
os << indent << "CurrentFlatIndex: " << this->CurrentFlatIndex << endl;
}
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