import java.awt.*;
import java.io.*;
import java.util.*;

public class TestApp
{
     public static void main(String args[])
     {
	myFrame Window;

       	if (args.length > 0)
	{
             Window=new myFrame(args[0]);
       	}
	else
	{        
     	     Window=new myFrame("Untitled");
	     Window.show();
	     Window.resize(Window.preferredSize());
	     Window.pack();
	}
     }
}

class myFrame extends Frame
{
     private Dimension myDimension;
     TextArea myTextArea=new TextArea(" ",25,80);
     String gblFilename;
     String gblDirectory;

     myFrame(String Title)
     {
	super(Title);
	setLayout(new GridLayout(1,1));
	this.add(myTextArea);
      	myDimension = new Dimension(200,200);
	myTextArea.appendText("This is copyright\n2004");

     	// menu's
	MenuBar mb = new MenuBar();
     	Menu m = new Menu("File");
     	m.add(new MenuItem("Load"));
     	m.add(new MenuItem("Save"));
     	m.add(new MenuItem("Exit"));
     	mb.add(m);
     	setMenuBar(mb);
     }

     public Dimension minimumSize()
     {
	return myDimension;
     }

     public Dimension preferredSize()
     {
	return myDimension;
     }

     public boolean handleEvent(Event ev)
     {
     	if (ev.id == Event.WINDOW_DESTROY)
     	{
		this.dispose();
		System.exit(0);
        	return true;
     	}

     	if (ev.id == Event.ACTION_EVENT)
     	{
		if (ev.target instanceof MenuItem)
		{
			if (ev.arg.equals("Exit"))
			{
		   		System.exit(0);
			}

			if (ev.arg.equals("Load"))
			{
			     FileDialog fd = new FileDialog(this, "Open a File");
                	     fd.show();

			     if (fd.getFile() != null)
        	             {
				String filename=new String(fd.getDirectory() + fd.getFile());                   
				gblDirectory=fd.getDirectory();
				gblFilename=fd.getFile();
			
				try 
				{ 
                             		clsLoadFile view = new clsLoadFile(filename, myTextArea);
				}
                		catch (IOException e)
                		{
		             		System.err.println("IOException in Load menu");
		   		}
                   		setTitle(filename);
                     		}

			     }
			}

			if (ev.arg.equals("Save"))
			{
		     		FileDialog fd = new FileDialog(this, "Save this File");
				fd.setDirectory(gblDirectory);
                     		fd.setFile("untitled.txt");                   
                     		fd.show();

				if (fd.getFile() != null)
                     		{
					String filename=new String(fd.getDirectory() + fd.getFile());                   
					gblDirectory=fd.getDirectory();
					gblFilename=fd.getFile();
					try 
					{ 
                             			clsSaveFile save = new clsSaveFile(filename, myTextArea);
					}
                				catch (IOException e)
                			{
		             			System.err.println("IOException in Save menu");
		   			}
					setTitle(filename);
				}
			}

		}
	return super.handleEvent(ev);
	}
}

class clsLoadFile
{
     clsLoadFile(String FileName, TextArea myTextArea) throws IOException
     {
     	FileInputStream fis;
	StringBuffer sb = new StringBuffer();
	try 
	{
	     fis = new FileInputStream(FileName);
             int onechar;

             while ((onechar=fis.read()) != -1)
             sb.append((char)onechar);
             fis.close();
             myTextArea.setText(sb.toString());
	}
	     catch (IOException e)
        {
             System.err.println ("IOException in clsLoadFile");
        }
     }
}

class clsSaveFile
{
     clsSaveFile(String FileName, TextArea myTextArea) throws IOException
     {
	FileOutputStream fos;
      	StringBuffer sb = new StringBuffer();
      	sb.append(myTextArea.getText());
      	int i;

	try 
	{
	     fos = new FileOutputStream(FileName);
             for (i=0; i < sb.length(); i++)
             fos.write(sb.charAt(i));
             fos.close();
	}
      	catch (IOException e)
      	{  
	     System.err.println ("IOException in clsSaveFile");
      	}
     }
}