/**
* Common initialization for all constructors.
*
* @throws Exception
*/
private void initialize() throws Exception {
// Disable most Cobra logging.
Logger.getLogger("org.lobobrowser").setLevel(Level.WARNING);
// Initialize variables for use with Cobra HTML parsing
uacontext = new SimpleUserAgentContext();
domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true); // never forget this!
domBuilder = domFactory.newDocumentBuilder();
doc = domBuilder.newDocument();
// Initialize variables for the inherited methods
xpathFactory = XPathFactory.newInstance();
xpath = xpathFactory.newXPath();
}
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);
}
});
}