1    package addBk.addressBook; 
2     
3    //NavigationPanel.java 
4     
5     
6    import java.awt.*; 
7    import java.awt.event.ActionEvent; 
8    import java.awt.event.ActionListener; 
9    import java.awt.event.FocusEvent; 
10    
11   public class NavigationPanel 
12           extends Panel 
13           implements ActionListener { 
14    
15       PreviousButton prevButton 
16               = new PreviousButton(); 
17    
18       Button nextButton 
19               = new NextButton(); 
20    
21       Button indexButton 
22               = new IndexButton(); 
23    
24       Button editButton 
25               = new EditButton(); 
26    
27       public void 
28               actionPerformed(ActionEvent e) { 
29           ((Runnable) 
30                   e.getSource()).run(); 
31       } 
32    
33       public void focusLost(FocusEvent e) { 
34           System.out.println("blur "); 
35       } 
36    
37       public void focusGained(FocusEvent e) { 
38           System.out.println("sharp"); 
39       } 
40    
41    
42       NavigationPanel() { 
43           setLayout( 
44                   new GridLayout(0, 1)); 
45           add(prevButton); 
46           add(nextButton); 
47           add(indexButton); 
48           add(editButton); 
49           prevButton.addActionListener(this); 
50           nextButton.addActionListener(this); 
51           indexButton.addActionListener(this); 
52           editButton.addActionListener(this); 
53       } 
54    
55       public class PreviousButton extends Button 
56               implements Runnable { 
57           PreviousButton() { 
58               super("Prev"); 
59           } 
60    
61           public void run() { 
62               System.out.println("Run previous"); 
63               AddressBookMediator display = 
64                       new AddressBookMediator(); 
65               if (display.isEditFlag()) 
66                   display.saveCurrentRecord(); 
67               display.prevRecord(); 
68           } 
69       } 
70    
71       public class NextButton extends Button 
72               implements Runnable { 
73           NextButton() { 
74               super("Next"); 
75           } 
76    
77           public void run() { 
78               System.out.println("Run next"); 
79               AddressBookMediator display = 
80                       new AddressBookMediator(); 
81               if (display.isEditFlag()) 
82                   display.saveCurrentRecord(); 
83               display.nextRecord(); 
84           } 
85       } 
86    
87       public class IndexButton extends Button 
88               implements Runnable { 
89           IndexButton() { 
90               super("Index"); 
91           } 
92    
93           public void run() { 
94               System.out.println("Run index"); 
95               AddressBookMediator display = 
96                       new AddressBookMediator(); 
97               display.toggleIndexDisplay(); 
98           } 
99       } 
100   
101      public class EditButton extends Button 
102              implements Runnable { 
103          EditButton() { 
104              super("Edit"); 
105          } 
106   
107          public void run() { 
108              System.out.println("Run edit"); 
109              AddressBookMediator display = 
110                      new AddressBookMediator(); 
111              if (display.isEditFlag()) 
112                  display.saveCurrentRecord(); 
113              display.toggleEditPanel(); 
114          } 
115      } 
116   
117   
118  } // end class NavigationPanel 
119