import java.awt.*;
import java.awt.event.*;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.FileInputStream;
import java.io.IOException;

/** This class reads a help text file and pops it up in a scrolling dialogue
 * window.
 *
 * @author Russell Young tetrii@young-0.com
 * @version 1.0
 */
/* Feel free to use, distribute, or change, with the only restriction that you
 * should not remove my name from the original code, and you should document 
 * your changes so there is no confusion about whose bugs they are.
 */
class help extends Dialog {
  ScrollPane sp = null;
  // This is the location of the help file
  help(Frame frame, String helpFile) throws IOException {
    super(frame, "Tetrii description", true);
    Panel p;
    Button b;
    if (sp == null) {
      p = new Panel(new GridLayout(0, 1));
      String s = null;
      sp = new ScrollPane();
      BufferedReader text = new BufferedReader
		  (new InputStreamReader
		   (new FileInputStream(helpFile)));
      while ((s = text.readLine()) != null)
		  p.add(new Label(s));
      sp.add(p);
    }
    add("Center", sp);
    p = new Panel();
    p.add(b = new Button("OK"));
    add("South", p);
    b.addActionListener(new okButton(this));
    setSize(500, 300);
    validate();
    show();
  }
}
class okButton implements ActionListener {
  private Dialog dialog;
  okButton(Dialog d) {dialog = d;}
  public void actionPerformed(ActionEvent e) {dialog.dispose();}
}