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Java > Open Source Codes > edu > rice > cs > drjava > ui > config > DirectoryOptionComponent


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33
34 package edu.rice.cs.drjava.ui.config;
35
36 import javax.swing.*;
37 import javax.swing.event.*;
38 import edu.rice.cs.drjava.config.*;
39 import edu.rice.cs.drjava.*;
40 import edu.rice.cs.util.swing.DirectorySelectorComponent;
41 import edu.rice.cs.util.swing.DirectoryChooser;
42 import java.awt.*;
43 import java.io.File JavaDoc;
44 import javax.swing.filechooser.FileFilter JavaDoc;
45
46 /** Graphical form of a FileOption.
47  *
48  * @version $Id: DirectoryOptionComponent.java 3562 2006-02-27 19:14:22Z rcartwright $
49  */
50 public class DirectoryOptionComponent extends OptionComponent<File JavaDoc> implements OptionConstants {
51
52   private DirectorySelectorComponent _component;
53
54   public DirectoryOptionComponent (FileOption opt, String JavaDoc text,Frame parent, DirectoryChooser dc) {
55     super(opt, text, parent);
56     
57     _component = new DirectorySelectorComponent(parent, dc, 30, 10f);
58     _component.setFileField(DrJava.getConfig().getSetting(_option));
59     _component.getFileField().getDocument().addDocumentListener(new DocumentListener() {
60       public void insertUpdate(DocumentEvent e) { notifyChangeListeners(); }
61       public void removeUpdate(DocumentEvent e) { notifyChangeListeners(); }
62       public void changedUpdate(DocumentEvent e) { notifyChangeListeners(); }
63     });
64   }
65
66   /** Constructor that allows for a tooltip description. */
67   public DirectoryOptionComponent (FileOption opt, String JavaDoc text, Frame parent, String JavaDoc desc, DirectoryChooser dc) {
68     this(opt, text, parent, dc);
69     setDescription(desc);
70   }
71
72   /** Sets the tooltip description text for this option.
73    * @param description the tooltip text
74    */
75   public void setDescription(String JavaDoc description) { _label.setToolTipText(description); }
76
77   /** Updates the config object with the new setting.
78    * @return true if the new value is set successfully
79    */
80   public boolean updateConfig() {
81     File JavaDoc componentFile = _component.getFileFromField();
82     File JavaDoc currentFile = DrJava.getConfig().getSetting(_option);
83     
84     if (componentFile != null && !componentFile.equals(currentFile)) {
85       DrJava.getConfig().setSetting(_option, componentFile);
86     }
87     else if (componentFile == null) {
88       DrJava.getConfig().setSetting(_option, _option.getDefault());
89     }
90
91     return true;
92   }
93
94   /** Displays the given value. */
95   public void setValue(File JavaDoc value) { _component.setFileField(value); }
96
97   /** Return's this OptionComponent's configurable component. */
98   public JComponent getComponent() { return _component; }
99
100   /** Adds a filter to decide if a directory can be chosen. */
101   public void addChoosableFileFilter(FileFilter JavaDoc filter) {
102     _component.addChoosableFileFilter(filter);
103   }
104 }
105
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