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Java > Open Source Codes > edu > rice > cs > util > swing > FileChooser


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33
34 package edu.rice.cs.util.swing;
35
36 import edu.rice.cs.plt.io.IOUtil;
37 import edu.rice.cs.util.swing.Utilities;
38
39 import java.io.File JavaDoc;
40
41 import javax.swing.JFileChooser JavaDoc;
42 //import javax.swing.filechooser.FileFilter;
43 import javax.swing.filechooser.FileView JavaDoc;
44
45 import java.awt.Component JavaDoc;
46
47 public class FileChooser extends JFileChooser JavaDoc {
48   
49   /** File system root for chooser */
50   protected File JavaDoc _root;
51   
52   /** Creates a FileChooser with the given root, allowing only a single selection WITHIN the specified file system
53    * @param root the root directory to display in the tree
54    */
55   public FileChooser(File JavaDoc root) {
56     super(root);
57     _init(root);
58   }
59
60   /*---------- INITIALIZATION METHODS ----------*/
61     
62   /** Sets up the GUI components of the dialog */
63   private void _init(final File JavaDoc root) {
64     
65     _root = root; // may be null
66 if (root != null) {
67       if (! root.exists()) _root = null;
68       else if (! root.isDirectory()) _root = root.getParentFile();
69     }
70
71     setFileSelectionMode(FILES_ONLY);
72     setDialogType(CUSTOM_DIALOG);
73     setApproveButtonText("Select");
74   }
75  
76   public boolean isTraversable(File JavaDoc f) {
77     if (_root == null) return super.isTraversable(f);
78 // Utilities.show("isTraversable(" + f + ") called; _root = " + _root);
79 return f != null && f.isDirectory() && IOUtil.isMember(f, _root);
80   }
81 }
82
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