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());
}
});
}
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);
}
});
}