import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class FileCommand implements ActionListener
{
  static final int NEW = 0;
  static final int OPEN = 1;
  static final int SAVE = 2;
  static final int SAVEAS = 3;
  static final int EXIT = 4;

  private static boolean m_hasfilename;
  private static String m_filename;
  private int m_id;
  private Gui m_gui;
  private TextArea m_area;
  
  public FileCommand(int id, Gui frame)
  {
    this.m_id = id;
    this.m_gui = frame;

    m_area = m_gui.getScript();
    m_hasfilename = false;
  }

  public void actionPerformed(ActionEvent e)
  {
    switch(m_id)
    {
      case NEW:
	newFile();
	break;
      case OPEN:
	openFile();
	break;
      case SAVE:
	save();
	break;
      case SAVEAS:
	saveAs();
	break;
      case EXIT:
	System.exit(0);
    }
  }

  public void newFile()
  {
    m_area.setText("");
    m_filename = null;
    m_hasfilename = false;
    m_gui.setTitle("Web Script: No Title");
  }



  public void openFile()
  {
    FileDialog fd = new FileDialog(m_gui,"Open Script");
    fd.setDirectory(".");
    fd.setVisible(true);
    String dir = fd.getDirectory();
    String name = fd.getFile();
    if((dir != null) && (name != null))
    {
      BufferedReader br;
      try
      {
        br = new BufferedReader(
		 new FileReader(dir + name));
      }
      catch (FileNotFoundException e)
      {
	System.out.println("File Not Found");
	return;
      }

      m_area.setText("");
      
      try
      {
	String line;
	while((line =br.readLine()) != null)
	{
	  m_area.append(line);
	  m_area.append("\n");
	}
	br.close();

	m_filename = new String(dir + name);
	m_hasfilename = true;
	m_gui.setTitle("Web Script: " + m_filename);

      }
      catch (IOException e)
      {
	System.out.println("File Read Error");
      }
    }
    
  }

  public void save()
  {
    
    if(m_hasfilename == false)
      saveAs();
    else
    {
      BufferedWriter wr;
      try
      {
        wr = new BufferedWriter(
		 new FileWriter(m_filename));
      }
      catch (IOException e)
      {
	System.out.println("File Create Error");
	return;
      }
      
      try
      {
	wr.write(m_area.getText());
	wr.close();
      }
      catch (IOException e)
      {
	System.out.println("File Write Error");
      }
    }
  }

  public void saveAs()
  {
    FileDialog fd = new FileDialog(m_gui,"Save Script",FileDialog.SAVE);
    fd.setDirectory(".");
    fd.setVisible(true);
    String dir = fd.getDirectory();
    String name = fd.getFile();
    if((dir != null) && (name != null))
    {
      BufferedWriter wr;
      try
      {
        wr = new BufferedWriter(
		 new FileWriter(dir + name));
      }
      catch (IOException e)
      {
	System.out.println("File Create Error");
	return;
      }
      
      try
      {
	wr.write(m_area.getText());
	wr.close();

	m_filename = new String(dir + name);
	m_hasfilename = true;
	m_gui.setTitle("Web Script: " + m_filename);
      }
      catch (IOException e)
      {
	System.out.println("File Write Error");
      }
    }
  }
}