📄 simplebrowser.java
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/*
* Copyright (C) 2004 Sun Microsystems, Inc. All rights reserved. Use is
* subject to license terms.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the Lesser GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
import java.awt.*;
import javax.swing.*;
import java.net.URL;
import java.net.MalformedURLException;
import org.jdesktop.jdic.browser.*;
/**
* JDIC API demo main class.
* <p>
* SimpleBrowser demonstrate the usage of JDIC API package org.jdesktop.jdic.browser
* (Browser component).
*/
public class SimpleBrowser {
// Below method reads, changes javascript variables and attributes of DOM elements.
private static void testDOMAPI(WebBrowser webBrowser) {
System.out.println("===========================================================");
System.out.println("=== Test setContent()/getContent()/executeScript() APIs ===");
System.out.println("===========================================================");
// Add Chinese/Korean/Japan characters to the content to test unicode
// support.
String HTML_CONTENT =
"<html>" +
"<head>" +
"<script>" +
"var counter = 100;" +
"function scriptMethod() { " +
"alert('scriptMethod() within the loaded page'); " +
"}" +
"</script>" +
"</head>" +
"<title>Test Page for JDIC Browser Component</title>" +
"" +
"<body>" +
"<div id='theDiv'>This page content is set using setContent() API</div>" +
"</body>" +
"</html>";
System.out.println("===============================");
System.out.println("=== To test executeScript() ===");
System.out.println("===============================");
String jscript = "alert(\"alert 'statement' test\");" +
"document.bgColor='blue';";
String result = webBrowser.executeScript(jscript);
System.out.println("Execution of: " + jscript + " returns: " + result);
System.out.println("============================");
System.out.println("=== To test getContent() ===");
System.out.println("============================");
String content = webBrowser.getContent();
System.out.println("getContent() returns: " + content);
System.out.println("============================");
System.out.println("=== To test setContent() ===");
System.out.println("============================");
System.out.println("To setContent(): " + HTML_CONTENT);
webBrowser.setContent(HTML_CONTENT);
jscript = "scriptMethod();";
System.out.println("Execute JavaScript method within the current page ...");
result = webBrowser.executeScript(jscript);
String retContent = webBrowser.getContent();
System.out.println("getContent() returns: " + retContent);
// getContent may return the same content in different upper/lower
// case or single/double quotation mark.
// Here we assume the content is equal if the content lengh is equal.
if (retContent != null
&& retContent.length() == HTML_CONTENT.length()) {
System.out.println("=== SUCCEED: getContent() correctly returns "
+ "the content set by setContent() !!!");
} else {
System.out.println("=== ERROR: getContent() doesn't return the "
+ "content set by setContent() ???");
}
}
public static void main(String[] args) {
JFrame frame = new JFrame("JDIC API Demo - SimpleBrowser");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
final WebBrowser webBrowser = new WebBrowser();
//Use below code to check the status of the navigation process,
//or register a listener for the notification events.
webBrowser.addWebBrowserListener(
new WebBrowserListener() {
boolean isFirstPage = true;
public void initializationCompleted(WebBrowserEvent event){;}
public void downloadStarted(WebBrowserEvent event) {;}
public void downloadCompleted(WebBrowserEvent event) {;}
public void downloadProgress(WebBrowserEvent event) {;}
public void downloadError(WebBrowserEvent event) {;}
public void documentCompleted(WebBrowserEvent event) {
// Uncomment below code to test getContent()/setContent()/
// executeScript() APIs.
// As the setContent() call will invoke this event, which falls
// into a loop, so check if this event is fired by the first
// loaded page.
/*
if (isFirstPage) {
testDOMAPI(webBrowser);
isFirstPage = false;
}
*/
}
public void titleChange(WebBrowserEvent event) {;}
public void statusTextChange(WebBrowserEvent event) {;}
public void windowClose(WebBrowserEvent event) {;}
});
try {
webBrowser.setURL(new URL("http://java.net"));
// Below Chinese website tests unicode support.
//webBrowser.setURL(new URL("http://www.google.com/intl/zh-CN/"));
// Print out debug messages in the command line.
//webBrowser.setDebug(true);
} catch (MalformedURLException e) {
System.out.println(e.getMessage());
return;
}
JPanel panel = new JPanel();
panel.setLayout(new BorderLayout());
panel.setPreferredSize(new Dimension(700, 500));
panel.add(webBrowser, BorderLayout.CENTER);
frame.getContentPane().add(panel, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
}
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