bswebpanel.java

一款即时通讯软件

package edu.ou.kmi.buddyspace.plugins.webbrowser.gui;

/*
 * BSWebPanel.java
 *
 * Project: BuddySpace
 * (C) Copyright Knowledge Media Institute 2002
 *
 *
 * Created on 27 September 2002, 17:45
 */

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

import edu.ou.kmi.buddyspace.gui.*;
import edu.ou.kmi.buddyspace.utils.*;

/**
 * <code>BSWebPanel</code> is the web browser plugin view.
 *
 * @author  Jiri Komzak, Knowledge Media Institute, Open University, United Kingdom
 */
public class BSWebPanel extends JPanel 
                        implements HyperlinkListener {
    
    private JEditorPane htmlEditorPane;
    private JScrollPane htmlEditorScrollPane;
    
    /** Constructor */
    public BSWebPanel(URL url) {
        super(new BorderLayout());
        
        htmlEditorPane = new JEditorPane();
        htmlEditorPane.addHyperlinkListener(this);
        htmlEditorPane.setEditable(false);
        //URL url;
        try {
            htmlEditorPane.setPage(url);
        } catch (IOException e) {
            System.out.println("Couldn't load the url");
        } catch (NullPointerException e2) {
            System.out.println("Couldn't load the url");
        }

        htmlEditorScrollPane = new JScrollPane(htmlEditorPane);
        
        add(htmlEditorScrollPane, BorderLayout.CENTER);
    }
    
    
    /** Goes to given URL - works only under Windows - opens external web browser. */
    public void goToURL(String url) {
        /*try {
            htmlEditorPane.setPage(url);
        } catch (IOException e) {
            //System.out.println("Couldn't load the url");
            JOptionPane.showMessageDialog(this, 
                        "Cannot open url " + url,
                        "Web browser error", 
                        JOptionPane.ERROR_MESSAGE);
        }*/
        
        try {
            if (OSVersion.isWindowsNTPlatform()) {
                String command = new String("cmd.exe /c start \"BuddySpace - browsing link\" \"" + url + "\"");
                System.out.println(command);
                Process p = Runtime.getRuntime().exec(command);
                p.waitFor();
            }
            else if (OSVersion.isWindows9xPlatform()) {
                String command = new String("command.com /c start \"" + url + "\"");
                System.out.println(command);
                Process p = Runtime.getRuntime().exec(command);
                p.waitFor();
            }
            else
                System.out.println("Sorry, no web browsing support for nonWin yet");

            //htmlEditorPane.setPage(url);
        } catch (Exception e) {
            //System.out.println("Couldn't load the url: " + e.getMessage());
            JOptionPane.showMessageDialog(this, 
                        "Cannot open url " + url,
                        "Web browser error", 
                        JOptionPane.ERROR_MESSAGE);
        }
    }
    
    
    /** Called when link action performed - calls open link in external browser */
    public void hyperlinkUpdate(HyperlinkEvent evt) {
        if (HyperlinkEvent.EventType.ACTIVATED == evt.getEventType()) {
            URL url = evt.getURL();
            goToURL(url.toString());
        }
    }
    
}