// Text frame class that extends Frame
// Date:  3-9-99

// Give applet access to all the AWT toolkit libraries
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import java.io.*;
import java.applet.*;

public class textframe extends Frame
                      implements ActionListener, ItemListener, MouseListener{

//  declare variables
public URL fileURL;
public int imageRow = 0;
public int imageCol = 0;
public String text, start;
public String end = "END";
public TextArea content;
public InputStream input = null;
public DataInputStream data;

// constructor with user interaction components
public textframe (String s, int row, int col){
    super (s);                  // call base class constructor to set frame title
    imageRow = row;
    imageCol = col;
    addMouseListener (this);
    addWindowListener (new closewindow());
    setBackground (Color.white);
    content = new TextArea ("Loading Data ...", 35, 50);
    add(content);
    showText();
}

public void showText(){

    /*
    //use this block to read file from hard disk; comment out the block below
    try{
        input = new FileInputStream ("text.txt");
        }
    catch (IOException e){
        java.lang.System.err.println ("Unable to open file\n: " + e.toString());
        }
    */

    //use this block to read file via Internet
    try{                                //gets file
        fileURL = new URL("http://www.aud.ucla.edu/~lms/text.txt");
        }
    catch (MalformedURLException e){
        java.lang.System.err.println ("Unable to open file\n: " + e.toString());
        }


    start = "TEXT" + imageRow + imageCol;

    try{                                //create data stream
        input = fileURL.openStream();
        data = new DataInputStream (input);
        //content.setFont (new Font("TimesRoman", Font.BOLD, 14));
        content.setText ("");

        while ((text = data.readLine()) != null){
        if (text.equals(start)){
                while (((text = data.readLine()) != null) && (text.equals(end) == false)){
                    content.appendText (text + "\n");
                    System.out.println ("String text = " + text);
                    }
                }
            }
        //content.addNotify();
        content.select(1,1);
        data.close();                   //finished reading, now close stream
        System.out.println ("Data closed");
        }

     catch (IOException e){
        java.lang.System.err.println ("Exception: " + e.toString());
        }

     try{                               //now close file
        input.close();
        System.out.println ("Input closed");
        }
     catch (IOException e){
        java.lang.System.err.println ("Unable to close file\n: " + e.toString());
        }
     content.show();
    }

public void newText (int row, int col){
    imageRow = row;
    imageCol = col;
    showText();
    }


public void mousePressed (MouseEvent e){}
public void mouseClicked (MouseEvent e) {}
public void mouseEntered (MouseEvent e) {}
public void mouseExited (MouseEvent e) {}
public void mouseMoved (MouseEvent e) {}
public void mouseReleased (MouseEvent e) {}
public void actionPerformed (ActionEvent e) {}
public void itemStateChanged (ItemEvent e){}
}