/*=========================================================================

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkXMLWriter.cxx,v $

  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 "vtkDataManagerWriter.h"
#include <vtkObjectFactory.h>

#include <vtkDataManager.h>

#include <vtkErrorCode.h>
#include <vtkInformation.h>
#include <vtkInformationVector.h>
#include "vtkStreamingDemandDrivenPipeline.h"

//----------------------------------------------------------------------------
vtkStandardNewMacro( vtkDataManagerWriter );
vtkCxxRevisionMacro(vtkDataManagerWriter, "$Revision: 1.0 $");


//----------------------------------------------------------------------------
vtkDataManagerWriter::vtkDataManagerWriter()
{
  
}
//----------------------------------------------------------------------------
vtkDataManagerWriter::~vtkDataManagerWriter()
{
}



//----------------------------------------------------------------------------
void vtkDataManagerWriter::SetDataManager(vtkDataManager* input)
{
}
//----------------------------------------------------------------------------
vtkDataManager* vtkDataManagerWriter::GetDataManager()
{
  return NULL;
  
}


//----------------------------------------------------------------------------
int vtkDataManagerWriter::ProcessRequest(vtkInformation* request,
					 vtkInformationVector** inputVector,
					 vtkInformationVector* outputVector)
{
  
    // generate the data
  if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA()))
  {
    
    if (!this->OpenFile())
    {
      return 0;
    }
    // Write the file.
    if (!this->StartFile())
    {
      return 0;
    }
    
//     if (!this->WriteHeader())
//     {
//       return 0;
//     }

    std::cout<<"actually writing..."<<std::endl;
    
    this->WriteScalarAttribute("UselessIsThisAttribute",
			       12);
    ostream& os = *(this->Stream);
    os << endl;
    
    std::cout<<"ended"<<std::endl;

//     if (!this->WriteFooter())
//     {
//       return 0;
//     }
    
    if (!this->EndFile())
    {
      return 0;
    }
    
    this->CloseFile();

  }
  // We have finished writing.
  this->UpdateProgress(1);
  //return this->Superclass::ProcessRequest(request, inputVector, outputVector);

  return 1;
  
  
}


//----------------------------------------------------------------------------
int vtkDataManagerWriter::FillInputPortInformation(
  int vtkNotUsed(port), vtkInformation* info)
{
  info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkObject");
  return 1;
}