htmldemo.java

实现电子书功能的java程序.可以页面跳转.java初学者试用.

/* 
  * @(#)HtmlDemo.java	1.4 99/07/23 
  * 
  * Copyright (c) 1997-1999 by Sun Microsystems, Inc. All Rights Reserved. 
  *  
  * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, 
  * modify and redistribute this software in source and binary code form, 
  * provided that i) this copyright notice and license appear on all copies of 
  * the software; and ii) Licensee does not utilize the software in a manner 
  * which is disparaging to Sun. 
  *  
  * This software is provided "AS IS," without a warranty of any kind. ALL 
  * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY 
  * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR 
  * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE 
  * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING 
  * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS 
  * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, 
  * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER 
  * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF 
  * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE 
  * POSSIBILITY OF SUCH DAMAGES. 
  *  
  * This software is not designed or intended for use in on-line control of 
  * aircraft, air traffic, aircraft navigation or aircraft communications; or in 
  * the design, construction, operation or maintenance of any nuclear 
  * facility. Licensee represents and warrants that it will not use or 
  * redistribute the Software for such purposes. 
  */ 
  
  
 import javax.swing.*; 
 import javax.swing.event.*; 
 import javax.swing.text.*; 
 import javax.swing.text.html.*; 
 import javax.swing.border.*; 
 import javax.swing.colorchooser.*; 
 import javax.swing.filechooser.*; 
 import javax.accessibility.*; 
  
 import java.awt.*; 
 import java.awt.event.*; 
 import java.beans.*; 
 import java.util.*; 
 import java.io.*; 
 import java.applet.*; 
 import java.net.*; 
  
 /** 
  * Html Demo 
  * 
  * @version 1.4 99/07/23 
  * @author Jeff Dinkins 
  */ 
 public class HtmlDemo extends DemoModule { 
  
     JEditorPane html; 
      
     /** 
      * main method allows us to run as a standalone demo. 
      */ 
     public static void main(String[] args) { 
 	HtmlDemo demo = new HtmlDemo(null); 
 	demo.mainImpl(); 
     } 
      
     /** 
      * HtmlDemo Constructor 
      */ 
     public HtmlDemo(SwingSet2 swingset) { 
         // Set the title for this demo, and an icon used to represent this 
         // demo inside the SwingSet2 app. 
         super(swingset, "HtmlDemo", "toolbar/JEditorPane.gif"); 
 	 
         try { 
 	    URL url = null; 
 	    // System.getProperty("user.dir") + 
 	    // System.getProperty("file.separator"); 
 	    String path = null; 
 	    try { 
 		path = "/resources/index.html"; 
 		url = getClass().getResource(path); 
             } catch (Exception e) { 
 		System.err.println("Failed to open " + path); 
 		url = null; 
             } 
 	     
             if(url != null) { 
                 html = new JEditorPane(url); 
                 html.setEditable(false); 
                 html.addHyperlinkListener(createHyperLinkListener()); 
 		 
 		JScrollPane scroller = new JScrollPane(); 
 		JViewport vp = scroller.getViewport(); 
 		vp.add(html); 
                 getDemoPanel().add(scroller, BorderLayout.CENTER); 
             } 
         } catch (MalformedURLException e) { 
             System.out.println("Malformed URL: " + e); 
         } catch (IOException e) { 
             System.out.println("IOException: " + e); 
         } 
     } 
  
     public HyperlinkListener createHyperLinkListener() { 
 	return new HyperlinkListener() { 
 	    public void hyperlinkUpdate(HyperlinkEvent e) { 
 		if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) { 
 		    if (e instanceof HTMLFrameHyperlinkEvent) { 
 			((HTMLDocument)html.getDocument()).processHTMLFrameHyperlinkEvent( 
 			    (HTMLFrameHyperlinkEvent)e); 
 		    } else { 
 			try { 
 			    html.setPage(e.getURL()); 
 			} catch (IOException ioe) { 
 			    System.out.println("IOE: " + ioe); 
 			} 
 		    } 
 		} 
 	    } 
 	}; 
     } 
      
 }