#include "vtkTestAlgorithmSource.h"
#include "vtkTest1.h"

#include "vtkCommand.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkStreamingDemandDrivenPipeline.h"

vtkStandardNewMacro(vtkTestAlgorithmSource);

//----------------------------------------------------------------------------
vtkTestAlgorithmSource::vtkTestAlgorithmSource()
{
  this->SetNumberOfInputPorts( 0 );
  this->SetNumberOfOutputPorts( 1 );
}

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

//----------------------------------------------------------------------------
void vtkTestAlgorithmSource::PrintSelf(ostream& os, vtkIndent indent)
{
  this->Superclass::PrintSelf(os, indent);
}

//----------------------------------------------------------------------------
vtkTest1* vtkTestAlgorithmSource::GetOutput()
{
  return this->GetOutput(0);
}

//----------------------------------------------------------------------------
vtkTest1* vtkTestAlgorithmSource::GetOutput(int port)
{
  return vtkTest1::SafeDownCast(this->GetOutputDataObject(port));
}

//----------------------------------------------------------------------------
void vtkTestAlgorithmSource::SetOutput(vtkDataObject* d)
{
  this->GetExecutive()->SetOutputData(0, d);
}


//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::ProcessRequest(vtkInformation* request,
                                     vtkInformationVector** inputVector,
                                     vtkInformationVector* outputVector)
{
  // Create an output object of the correct type.
  if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA_OBJECT()))
  {
    return this->RequestDataObject(request, inputVector, outputVector);
  }
  // generate the data
  if(request->Has(vtkDemandDrivenPipeline::REQUEST_DATA()))
  {
    return this->RequestData(request, inputVector, outputVector);
  }

  if(request->Has(vtkStreamingDemandDrivenPipeline::REQUEST_UPDATE_EXTENT()))
  {
    return this->RequestUpdateExtent(request, inputVector, outputVector);
  }

  // execute information
  if(request->Has(vtkDemandDrivenPipeline::REQUEST_INFORMATION()))
  {
    return this->RequestInformation(request, inputVector, outputVector);
  }

  return this->Superclass::ProcessRequest(request, inputVector, outputVector);
}

//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::FillOutputPortInformation(
    int vtkNotUsed(port), vtkInformation* info)
{
  // now add our info
  info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkTest1");
  return 1;
}


//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::RequestDataObject(
                                        vtkInformation* vtkNotUsed(request),
    vtkInformationVector** vtkNotUsed(inputVector),
                                      vtkInformationVector* outputVector )
{
  for ( int i = 0; i < this->GetNumberOfOutputPorts(); ++i )
  {
    vtkInformation* outInfo = outputVector->GetInformationObject( i );
    vtkTest1* output = vtkTest1::SafeDownCast(
                                            outInfo->Get( vtkDataObject::DATA_OBJECT() ) );
    if ( ! output )
    {
      output = vtkTest1::New();
      outInfo->Set( vtkDataObject::DATA_OBJECT(), output );
      output->FastDelete();
      this->GetOutputPortInformation( i )->Set(
                                      vtkDataObject::DATA_EXTENT_TYPE(), output->GetExtentType() );
    }
  }
  return 1;
}

//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::RequestInformation(
                                         vtkInformation* vtkNotUsed(request),
    vtkInformationVector** vtkNotUsed(inputVector),
                                      vtkInformationVector* vtkNotUsed(outputVector))
{
  // do nothing let subclasses handle it
  return 1;
}

//----------------------------------------------------------------------------
int vtkTestAlgorithmSource::RequestUpdateExtent(
                                          vtkInformation* vtkNotUsed(request),
    vtkInformationVector** inputVector,
    vtkInformationVector* vtkNotUsed(outputVector))
{
  int numInputPorts = this->GetNumberOfInputPorts();
  for (int i=0; i<numInputPorts; i++)
  {
    int numInputConnections = this->GetNumberOfInputConnections(i);
    for (int j=0; j<numInputConnections; j++)
    {
      vtkInformation* inputInfo = inputVector[i]->GetInformationObject(j);
      inputInfo->Set(vtkStreamingDemandDrivenPipeline::EXACT_EXTENT(), 1);
    }
  }
  return 1;
}

//----------------------------------------------------------------------------
// This is the superclasses style of Execute method.  Convert it into
// an imaging style Execute method.
int vtkTestAlgorithmSource::RequestData(
                                  vtkInformation* vtkNotUsed(request),
    vtkInformationVector** vtkNotUsed( inputVector ),
                                       vtkInformationVector* vtkNotUsed(outputVector) )
{
  // do nothing let subclasses handle it
  return 1;
}
