//file: CanisMinor.java
import java.awt.*;
import java.awt.event.*;
import java.net.*;
import javax.swing.*;
import javax.swing.event.*;

public class CanisMinor extends JFrame {
  protected JEditorPane mEditorPane;
  protected JTextField mURLField;

  public CanisMinor(String urlString) {
    super("CanisMinor v1.0");
    createGUI(urlString);
  }

  protected void createGUI( String urlString ) {
    Container content = getContentPane();
    content.setLayout(new BorderLayout());

    JToolBar urlToolBar = new JToolBar(  );
    mURLField = new JTextField(urlString, 40);
    urlToolBar.add(new JLabel("Location:"));
    urlToolBar.add(mURLField);
    content.add(urlToolBar, BorderLayout.NORTH);

    mEditorPane = new JEditorPane(  );
    mEditorPane.setEditable(false);
    content.add(new JScrollPane(mEditorPane), BorderLayout.CENTER);

    openURL(urlString);  

    mURLField.addActionListener(new ActionListener(  ) {
      public void actionPerformed(ActionEvent ae) {
        openURL(ae.getActionCommand(  ));
      }
    });

    mEditorPane.addHyperlinkListener(new LinkActivator(  ));

    setSize(500, 600);
    setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
  }

  protected void openURL(String urlString) {
    try {
      URL url = new URL(urlString);
      mEditorPane.setPage(url);
      mURLField.setText(url.toExternalForm(  ));
    }
    catch (Exception e) {
      System.out.println("Couldn't open " + urlString + ":" + e);
    }
  }

  class LinkActivator implements HyperlinkListener {
    public void hyperlinkUpdate(HyperlinkEvent he) {
      HyperlinkEvent.EventType type = he.getEventType(  );
      if (type == HyperlinkEvent.EventType.ACTIVATED)
        openURL(he.getURL().toExternalForm(  ));
    }
  }

  public static void main(String[] args) {
    String urlString = "http://www.oreilly.com/catalog/java2d/";
    if (args.length > 0)
       urlString = args[0];
    new CanisMinor( urlString ).setVisible( true );
  }
}