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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFileOutputWindow.cxx,v $
  Language:  C++
  Date:      $Date: 2003/09/10 14:29:07 $
  Version:   $Revision: 1.6 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.

=========================================================================*/
#include "itkFileOutputWindow.h"

namespace itk
{
  
/**
 * Prompting off by default
 */
FileOutputWindow
::FileOutputWindow()
{
  m_Flush = false;
  m_Append = false;
  m_Stream = 0;
  m_FileName = "";
}

FileOutputWindow
::~FileOutputWindow()
{
  if (m_Stream)
    {
    delete m_Stream;
    m_Stream = 0;
    }
}

void 
FileOutputWindow
::PrintSelf(std::ostream& os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);

  os << indent << "FileName: " << m_FileName << std::endl;
  os << indent << "Stream: " << m_Stream << std::endl;
  os << indent << "Append: " << (m_Append ? "On\n" : "Off\n") << std::endl;
  os << indent << "Flush: " << (m_Flush ? "On\n" : "Off\n") << std::endl;
}


void
FileOutputWindow
::Initialize() 
{
  if (!m_Stream)
    {
    if (m_FileName == "")
      {
      m_FileName = "itkMessageLog.txt";
      }
    if (m_Append)
      {
      m_Stream = new std::ofstream(m_FileName.c_str(), std::ios::app);
      }
    else
      {
      m_Stream = new std::ofstream(m_FileName.c_str());
      }
    }
}


/**
 * 
 */
void 
FileOutputWindow
::DisplayText(const char* txt)
{
  if (!txt)
    {
    return;
    }

  if (!m_Stream)
    {
    this->Initialize();
    }
  *m_Stream << txt << std::endl;
  
  if (m_Flush)
    {
    m_Stream->flush();
    }
}

} // end namespace itk
