/* 
  * @(#)TreeDemo.java	1.3 99/10/10 
  * 
  * 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 
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  * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE 
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  *  
  * 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.tree.*; 
 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.*; 
  
 /** 
  * JTree Demo 
  * 
  * @version 1.3 10/10/99 
  * @author Jeff Dinkins 
  */ 
 public class TreeDemo extends DemoModule { 
  
     /** 
      * main method allows us to run as a standalone demo. 
      */ 
     public static void main(String[] args) { 
 	TreeDemo demo = new TreeDemo(null); 
 	demo.mainImpl(); 
     } 
  
     /** 
      * TreeDemo Constructor 
      */ 
     public TreeDemo(SwingSet2 swingset) { 
 	// Set the title for this demo, and an icon used to represent this 
 	// demo inside the SwingSet2 app. 
 	super(swingset, "TreeDemo", "toolbar/JTree.gif"); 
  
 	getDemoPanel().add(createTree(), BorderLayout.CENTER); 
     } 
   
     public JScrollPane createTree() { 
         DefaultMutableTreeNode top = new DefaultMutableTreeNode(getString("TreeDemo.music")); 
         DefaultMutableTreeNode catagory = null ; 
 	DefaultMutableTreeNode artist = null; 
 	DefaultMutableTreeNode record = null; 
  
 	// open tree data  
 	URL url = getClass().getResource("/resources/tree.txt"); 
  
 	try { 
 	    // convert url to buffered string 
 	    InputStream is = url.openStream(); 
 	    InputStreamReader isr = new InputStreamReader(is); 
 	    BufferedReader reader = new BufferedReader(isr); 
  
 	    // read one line at a time, put into tree 
 	    String line = reader.readLine(); 
 	    while(line != null) { 
 		// System.out.println("reading in: ->" + line + "<-"); 
 		char linetype = line.charAt(0); 
 		switch(linetype) { 
 		   case 'C': 
 		     catagory = new DefaultMutableTreeNode(line.substring(2)); 
 		     top.add(catagory); 
 		     break; 
 		   case 'A': 
 		     if(catagory != null) { 
 		         catagory.add(artist = new DefaultMutableTreeNode(line.substring(2))); 
 		     } 
 		     break; 
 		   case 'R': 
 		     if(artist != null) { 
 		         artist.add(record = new DefaultMutableTreeNode(line.substring(2))); 
 		     } 
 		     break; 
 		   case 'S': 
 		     if(record != null) { 
 		         record.add(new DefaultMutableTreeNode(line.substring(2))); 
 		     } 
 		     break; 
 		   default: 
 		     break; 
 		} 
 		line = reader.readLine(); 
 	    } 
 	} catch (IOException e) { 
 	} 
  
 	JTree tree = new JTree(top) { 
 	    public Insets getInsets() { 
 		return new Insets(5,5,5,5); 
 	    } 
 	}; 
 	return new JScrollPane(tree); 
     } 
  
 }