#include <cpPlugins/Plugins/PolyDataReader.h>
#include <cpPlugins/Interface/PolyData.h>

#include <vtkErrorCode.h>
#include <vtkPolyDataReader.h>

// -------------------------------------------------------------------------
std::string cpPlugins::Plugins::PolyDataReader::
GetClassName( ) const
{
  return( "cpPlugins::Plugins::PolyDataReader" );
}

// -------------------------------------------------------------------------
cpPlugins::Plugins::PolyDataReader::
PolyDataReader( )
  : Superclass( )
{
  this->SetNumberOfOutputs( 1 );
  this->_MakeOutput< cpPlugins::Interface::PolyData >( 0 );

  using namespace cpPlugins::Interface;
  this->m_DefaultParameters.Configure( Parameters::String, "FileName" );
  this->m_Parameters = this->m_DefaultParameters;
}

// -------------------------------------------------------------------------
cpPlugins::Plugins::PolyDataReader::
~PolyDataReader( )
{
}

// -------------------------------------------------------------------------
std::string cpPlugins::Plugins::PolyDataReader::
_GenerateData( )
{
  // Get filename
  using namespace cpPlugins::Interface;
  Parameters::TString fname =
    this->m_Parameters.GetValueAsString( "FileName" );

  // Create a possible reader
  vtkPolyDataReader* reader =
    dynamic_cast< vtkPolyDataReader* >( this->m_Reader.GetPointer( ) );
  if( reader == NULL )
  {
    this->m_Reader = vtkSmartPointer< vtkPolyDataReader >::New( );
    reader =
      dynamic_cast< vtkPolyDataReader* >( this->m_Reader.GetPointer( ) );

  } // fi
  reader->SetFileName( fname.c_str( ) );
  reader->Update( );
  unsigned long error = reader->GetErrorCode( );
  if( error == vtkErrorCode::NoError )
  {
    if( this->m_Outputs[ 0 ].IsNotNull( ) )
    {
      cpPlugins::Interface::PolyData* pdata =
        dynamic_cast< cpPlugins::Interface::PolyData* >(
          this->m_Outputs[ 0 ].GetPointer( )
          );
      if( pdata != NULL )
        pdata->SetRealDataObject( reader->GetOutput( ) );

    } // fi
    return( "" );
  }
  else
    return( vtkErrorCode::GetStringFromErrorCode( error ) );
}

// eof - $RCSfile$