Example #1
0
  public TestFrame(String title) throws HeadlessException {
    super(title);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container contentPane = this.getContentPane();
    contentPane.setLayout(new BorderLayout());
    JPanel topPanel = new JPanel();
    topPanel.setLayout(new BorderLayout());
    JPanel bottomPanel = new JPanel();
    bottomPanel.setLayout(new BorderLayout());
    final JTextField textField = new JTextField();
    this.addressField = textField;
    JButton button = new JButton("Parse & Render");
    final JTabbedPane tabbedPane = new JTabbedPane();
    final JTree tree = new JTree();
    final JScrollPane scrollPane = new JScrollPane(tree);

    this.tree = tree;

    contentPane.add(topPanel, BorderLayout.NORTH);
    contentPane.add(bottomPanel, BorderLayout.CENTER);

    topPanel.add(new JLabel("URL: "), BorderLayout.WEST);
    topPanel.add(textField, BorderLayout.CENTER);
    topPanel.add(button, BorderLayout.EAST);

    bottomPanel.add(tabbedPane, BorderLayout.CENTER);

    final HtmlPanel panel = new HtmlPanel();
    panel.addSelectionChangeListener(
        new SelectionChangeListener() {
          public void selectionChanged(SelectionChangeEvent event) {
            if (logger.isLoggable(Level.INFO)) {
              logger.info("selectionChanged(): selection node: " + panel.getSelectionNode());
            }
          }
        });
    this.htmlPanel = panel;
    UserAgentContext ucontext = new SimpleUserAgentContext();
    this.rcontext = new LocalHtmlRendererContext(panel, ucontext);

    final JTextArea textArea = new JTextArea();
    this.textArea = textArea;
    textArea.setEditable(false);
    final JScrollPane textAreaSp = new JScrollPane(textArea);

    tabbedPane.addTab("HTML", panel);
    tabbedPane.addTab("Tree", scrollPane);
    tabbedPane.addTab("Source", textAreaSp);
    tabbedPane.addChangeListener(
        new ChangeListener() {
          public void stateChanged(ChangeEvent e) {
            Component component = tabbedPane.getSelectedComponent();
            if (component == scrollPane) {
              tree.setModel(new NodeTreeModel(panel.getRootNode()));
            } else if (component == textAreaSp) {
              textArea.setText(rcontext.getSourceCode());
            }
          }
        });

    button.addActionListener(
        new ActionListener() {
          public void actionPerformed(ActionEvent event) {
            process(textField.getText());
          }
        });
  }
Example #2
0
  public static void main(String[] args) throws Exception {
    // Initialize logging so only Cobra warnings are seen.
    Logger.getLogger("org.lobobrowser").setLevel(Level.WARNING);

    // Open a connection on the URL we want to render first.
    String uri = "http://www.google.com";
    URL url = new URL(uri);
    URLConnection connection = url.openConnection();
    InputStream in = connection.getInputStream();

    // A Reader should be created with the correct charset,
    // which may be obtained from the Content-Type header
    // of an HTTP response.
    Reader reader = new InputStreamReader(in);

    // InputSourceImpl constructor with URI recommended
    // so the renderer can resolve page component URLs.
    InputSource is = new InputSourceImpl(reader, uri);
    HtmlPanel htmlPanel = new HtmlPanel();
    UserAgentContext ucontext = new LocalUserAgentContext();
    HtmlRendererContext rendererContext = new LocalHtmlRendererContext(htmlPanel, ucontext);

    // Set a preferred width for the HtmlPanel,
    // which will allow getPreferredSize() to
    // be calculated according to block content.
    // We do this here to illustrate the
    // feature, but is generally not
    // recommended for performance reasons.
    htmlPanel.setPreferredWidth(800);

    // Note: This example does not perform incremental
    // rendering while loading the initial document.
    DocumentBuilderImpl builder =
        new DocumentBuilderImpl(rendererContext.getUserAgentContext(), rendererContext);

    Document document = builder.parse(is);
    in.close();

    // Set the document in the HtmlPanel. This method
    // schedules the document to be rendered in the
    // GUI thread.
    htmlPanel.setDocument(document, rendererContext);

    // Create a JFrame and add the HtmlPanel to it.
    final JFrame frame = new JFrame();
    frame.getContentPane().add(htmlPanel);

    // We pack the JFrame to demonstrate the
    // validity of HtmlPanel's preferred size.
    // Normally you would want to set a specific
    // JFrame size instead.

    // pack() should be called in the GUI dispatch
    // thread since the document is scheduled to
    // be rendered in that thread, and is required
    // for the preferred size determination.
    EventQueue.invokeLater(
        new Runnable() {
          public void run() {
            frame.pack();
            frame.setVisible(true);
          }
        });
  }