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13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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25 
26 package javax.swing.plaf;
27 
28 import javax.swing.*;
29 import javax.swing.filechooser.FileFilter;
30 import javax.swing.filechooser.FileView;
31 import java.io.File;
32 
33 /**
34  * Pluggable look and feel interface for <code>JFileChooser</code>.
35  *
36  * @author Jeff Dinkins
37  */
38 
39 public abstract class FileChooserUI extends ComponentUI
40 {
41     /**
42      * Constructor for subclasses to call.
43      */
FileChooserUI()44     protected FileChooserUI() {}
45 
46     /**
47      * Returns an accept-all file filter.
48      * @param fc the file chooser
49      * @return an accept-all file filter
50      */
getAcceptAllFileFilter(JFileChooser fc)51     public abstract FileFilter getAcceptAllFileFilter(JFileChooser fc);
52     /**
53      * Returns a file view.
54      * @param fc the file chooser
55      * @return a file view
56      */
getFileView(JFileChooser fc)57     public abstract FileView getFileView(JFileChooser fc);
58 
59     /**
60      * Returns approve button text.
61      * @param fc the file chooser
62      * @return approve button text.
63      */
getApproveButtonText(JFileChooser fc)64     public abstract String getApproveButtonText(JFileChooser fc);
65     /**
66      * Returns the dialog title.
67      * @param fc the file chooser
68      * @return the dialog title.
69      */
getDialogTitle(JFileChooser fc)70     public abstract String getDialogTitle(JFileChooser fc);
71 
72     /**
73      * Rescan the current directory.
74      * @param fc the file chooser
75      */
rescanCurrentDirectory(JFileChooser fc)76     public abstract void rescanCurrentDirectory(JFileChooser fc);
77     /**
78      * Ensure the file in question is visible.
79      * @param fc the file chooser
80      * @param f the file
81      */
ensureFileIsVisible(JFileChooser fc, File f)82     public abstract void ensureFileIsVisible(JFileChooser fc, File f);
83 
84     /**
85      * Returns default button for current <code>LookAndFeel</code>.
86      * <code>JFileChooser</code> will use this button as default button
87      * for dialog windows.
88      *
89      * @param fc the {@code JFileChooser} whose default button is requested
90      * @return the default JButton for current look and feel
91      * @since 1.7
92      */
getDefaultButton(JFileChooser fc)93     public JButton getDefaultButton(JFileChooser fc) {
94         return null;
95     }
96 }
97