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


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33
34 package edu.rice.cs.drjava.ui.config;
35
36 import javax.swing.*;
37 import edu.rice.cs.drjava.config.*;
38 import edu.rice.cs.drjava.*;
39 import java.awt.*;
40 import java.awt.event.*;
41 import java.util.Iterator JavaDoc;
42
43 /**
44  * This component displays all legal choices for a ForcedChoiceOption as a list
45  * of radio buttons. The radio buttons are placed within a framed panel titled
46  * with the OptionComponent's label.
47  * @version $Id: ForcedChoiceOptionComponent.java 3553 2006-02-20 21:22:09Z rcartwright $
48  */
49 public class ForcedChoiceOptionComponent extends OptionComponent<String JavaDoc> {
50   private JComboBox _comboBox;
51
52   /**
53    * Main constructor builds a panel containing a set of radio buttons for the
54    * legal values of the ForcedChoiceOption.
55    */
56   public ForcedChoiceOptionComponent(ForcedChoiceOption option, String JavaDoc labelText, Frame parent) {
57     super(option, labelText, parent);
58
59     // Build the combo box from the Iterator of legal values
60 Iterator JavaDoc<String JavaDoc> values = option.getLegalValues();
61     _comboBox = new JComboBox();
62     
63     _comboBox.addActionListener(new ActionListener() {
64       public void actionPerformed(ActionEvent e) {
65         notifyChangeListeners();
66       }
67     });
68
69     while(values.hasNext()) {
70       String JavaDoc currValue = values.next();
71       _comboBox.addItem(currValue);
72     }
73
74     resetToCurrent(DrJava.getConfig().getSetting(_option));
75   }
76
77   /**
78    * Constructor that allows for a tooltip description.
79    */
80   public ForcedChoiceOptionComponent(ForcedChoiceOption option, String JavaDoc labelText,
81                                      Frame parent, String JavaDoc description) {
82     this(option, labelText, parent);
83     setDescription(description);
84   }
85
86   /**
87    * Sets the tooltip description text for this option.
88    * @param description the tooltip text
89    */
90   public void setDescription(String JavaDoc description) {
91     _comboBox.setToolTipText(description);
92     _label.setToolTipText(description);
93   }
94
95   /**
96    * Selects the radio button corresponding to the current config options.
97    */
98   public void resetToCurrent(String JavaDoc current) {
99     _comboBox.setSelectedItem(current);
100     
101 // String current = DrJava.getConfig().getSetting(_option);
102 // Iterator values = ((ForcedChoiceOption)_option).getLegalValues();
103 // int i = 0;
104 //
105 // while(values.hasNext()) {
106 // if (current.equals(values.next())) {
107 //
108 // return;
109 // }
110 // i++;
111 // }
112 }
113
114   /**
115    * Return's this OptionComponent's configurable component.
116    */
117   public JComponent getComponent() {
118     return _comboBox;
119   }
120
121   /**
122    * Updates the config object with the new setting.
123    * @return true if the new value is set successfully
124    */
125   public boolean updateConfig() {
126     String JavaDoc oldValue = DrJava.getConfig().getSetting(_option);
127     String JavaDoc newValue = _comboBox.getSelectedItem().toString();
128
129     if (!newValue.equals(oldValue)) {
130       DrJava.getConfig().setSetting(_option, newValue);
131     }
132
133     return true;
134   }
135
136   /**
137    * Displays the given value.
138    */
139   public void setValue(String JavaDoc value) {
140     resetToCurrent(value);
141   }
142 }
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