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


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33
34 package edu.rice.cs.util.swing;
35
36 import javax.swing.Icon JavaDoc;
37 import javax.swing.JFileChooser JavaDoc;
38 import java.io.File JavaDoc;
39
40 /** This FileDisplayManager uses the same icons and naming schemes as the JFileChooser offered by swing. */
41 public class DefaultFileDisplayManager implements FileDisplayManager {
42   
43   private JFileChooser JavaDoc _jfc;
44   
45   public DefaultFileDisplayManager() { _jfc = new JFileChooser JavaDoc(); }
46   
47   /** Given a file, decide which icon to use
48    * @param f The file to base the icon decision on
49    * @return The icon to display for the given file
50    */
51   public Icon JavaDoc getIcon(File JavaDoc f) {
52     // avoid problem with windows filesystem drivers that would cause a filenotfound exception
53 if (f != null && ! f.exists()) f = null;
54     
55     return _jfc.getIcon(f);
56   }
57   
58   /** Given a file, decide on which name to display for it
59    * @param f The file to base the naming decison on
60    * @return The name to display for the file
61    */
62   public String JavaDoc getName(File JavaDoc f) { return _jfc.getName(f); }
63   
64   /** Creates a file display that displays a file as this manager specifies
65    * @param f the file to display using the display manager
66    * @return the file display object used to display a file's name
67    */
68   public FileDisplay makeFileDisplay(File JavaDoc f) { return new FileDisplay(f, this); }
69   
70   /** Creates a file display that displays a file as this manager specifies
71    * @param parent the parent of the file to display using the display manager
72    * @param child the name of the child such that <code>new File(parent, child)</code> is
73    * the file to be displayed.
74    * @return the file display object used to display a file's name
75    */
76   public FileDisplay makeFileDisplay(File JavaDoc parent, String JavaDoc child) { return new FileDisplay(parent, child, this); }
77   
78   /** Creates a FileDisplay representing a new untitled folder that is yet to be created.
79    * @param parent the parent folder of the new folder
80    * @return the new file display
81    */
82   public FileDisplay makeNewFolderDisplay(File JavaDoc parent) { return FileDisplay.newFile(parent, this); }
83   
84   /** Updates the UI to reflect any changes in the fs. */
85   public void update() { _jfc.updateUI(); }
86 }
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