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/*******************************************************************************
* Copyright (c) 2000, 2009 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Browser example snippet: Examine request and response headers in a Mozilla Browser
*
* IMPORTANT: For this snippet to work properly all of the requirements
* for using JavaXPCOM in a stand-alone application must be satisfied
* (see http://www.eclipse.org/swt/faq.php#howusejavaxpcom).
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.3
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.browser.Browser;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.*;
import org.mozilla.interfaces.*;
import org.mozilla.xpcom.Mozilla;
public class Snippet321 {
public static void main(String [] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setBounds(10,10,200,200);
shell.setLayout(new FillLayout());
Browser browser;
try {
browser = new Browser(shell, SWT.MOZILLA);
} catch (SWTError e) {
System.out.println("Could not instantiate Browser: " + e.getMessage());
display.dispose();
return;
}
nsIObserver observer = new nsIObserver() {
public nsISupports queryInterface(String aIID) {
if (aIID.equals(nsIObserver.NS_IOBSERVER_IID) || aIID.equals(nsIObserver.NS_ISUPPORTS_IID)) {
return this;
}
return null;
}
public void observe(nsISupports subject, String topic, String data) {
nsIHttpChannel channel = (nsIHttpChannel)subject.queryInterface(nsIHttpChannel.NS_IHTTPCHANNEL_IID);
nsIRequest request = (nsIRequest)subject.queryInterface(nsIRequest.NS_IREQUEST_IID);
if (topic.equals("http-on-modify-request")) {
System.out.println("---------------------\nSome Request Header Values for " + request.getName() + ':');
printRequestHeader(channel, "accept");
printRequestHeader(channel, "accept-language");
printRequestHeader(channel, "host");
printRequestHeader(channel, "user-agent");
} else {
/* http-on-examine-response */
System.out.println("---------------------\n\tSome Response Header Values for " + request.getName() + ':');
printResponseHeader(channel, "content-length");
printResponseHeader(channel, "content-type");
printResponseHeader(channel, "expires");
printResponseHeader(channel, "server");
}
}
void printRequestHeader(nsIHttpChannel channel, String header) {
try {
System.out.println(header + '=' + channel.getRequestHeader(header));
} catch (Exception e) {
// the header did not exist, just continue
}
}
void printResponseHeader(nsIHttpChannel channel, String header) {
try {
System.out.println('\t' + header + '=' + channel.getResponseHeader(header));
} catch (Exception e) {
// the header did not exist, just continue
}
}
};
nsIObserverService observerService = (nsIObserverService)Mozilla.getInstance().getServiceManager().getServiceByContractID(
"@mozilla.org/observer-service;1", nsIObserverService.NS_IOBSERVERSERVICE_IID);
observerService.addObserver(observer, "http-on-modify-request", false);
observerService.addObserver(observer, "http-on-examine-response", false);
browser.setUrl("http://www.eclipse.org");
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
display.dispose();
}
}
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