// File: HelpFrame.java
// Classes: HelpFrame
// Author: Kedar Patankar

package edu.neu.ccs.demeter.tools.apstudio.graphedit;

import java.awt.Frame;
import java.awt.Button;
import java.awt.Event;
import java.awt.TextArea;
import java.awt.Color;
import java.awt.Font;
import java.awt.BorderLayout;
import java.awt.Panel;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;

public class HelpFrame extends Frame implements ActionListener
{
	private Button _cancel;

	public HelpFrame(String basefile)
	{
		super("User's guide ...");
		setLayout(new BorderLayout());

		Panel buttonPanel = new Panel();
		_cancel=new Button("Close");
		_cancel.addActionListener(this); // jdk 1.1
		buttonPanel.add("East",_cancel);
		add("South",buttonPanel);
// jdk 1.1 type window event handling
		addWindowListener(new HFAdapter()); // using inner class for window handling.
		HtmlPanel hp = new HtmlPanel(basefile);
		add("Center",hp);
	}

  public void setVisible(boolean status)
  {
	  if(status)
		  _cancel.requestFocus();
	  super.setVisible(status);
  }
  public void actionPerformed(ActionEvent event)
  {
	  close();
  }

	private void close() { setVisible(false); dispose(); }

// inner class VDAdapter
  class HFAdapter extends WindowAdapter
  {
	  public void windowClosing(WindowEvent event)
	  {
		  close();
	  }
  }
} /* end class HelpFrame */