package ex30;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.net.URL;
import javax.swing.event.*;
import java.io.*;

public class WebBrowser extends JApplet{
    // JEditor pane to view HTML files
    private JEditorPane jep = new JEditorPane();
    
    // Label for URL
    private JLabel jlblURL = new JLabel("URL");
    
    // Text field for entering URL
    private JTextField jtfURL = new JTextField();
    
    /** Initialize the applet */
    public void init(){
        // Create a panel jpURL to hold the label and text field
        JPanel jpURL = new JPanel();
        jpURL.setLayout(new BorderLayout());
        jpURL.add(jlblURL, BorderLayout.WEST);
        jpURL.add(jtfURL, BorderLayout.CENTER);
        
        // Place jpURL and jspViewer in the applet
        add(new JScrollPane(jep), BorderLayout.CENTER);
        add(jpURL, BorderLayout.NORTH);
        
        // Set jep noneditable
        jep.setEditable(false);
        
        // Register listener
        jep.addHyperlinkListener(new HyperlinkListener(){
            public void hyperlinkUpdate(HyperlinkEvent e){
                try{
                    jep.setPage(e.getURL());
                }
                catch(IOException ex){
                    System.out.println(ex);
                }
            }
        });
        jtfURL.addActionListener(new ActionListener(){
            public void actionPerformed(ActionEvent e){
                try{
                    // Get the URL from text field
                    URL url = new URL(jtfURL.getText().trim());
                    
                    // Display the HTML file
                    jep.setPage(url);
                }
                catch(IOException ex){
                    System.out.println(ex);
                }
            }
        });
    }
}