OffSwitch


1   package Jt.examples.patterns;
2   import java.util.*;
3   import java.lang.reflect.*;
4   import java.beans.*;
5   import java.io.*;
6   import Jt.*;
7   
8   
9   
10  /**
11   * Demonstrates the use of the State pattern (see Flyweight.java).
12   */
13  
14  
15  public class OffSwitch extends JtState {
16  
17  
18  
19    public OffSwitch () {
20    }
21  
22  
23  
24  
25    /**
26      * Process object messages. 
27      * <ul>
28      * </ul>
29      * @param event Jt Message    
30      */
31  
32    public Object   processMessage (Object   event) {
33  
34     String   msgid = null;
35     JtMessage e = (JtMessage) event;
36     Object   content;
37     Object   data;
38     JtMessage aux;
39  
40  
41       if (e == null)
42      return null;
43  
44       msgid = (String  ) e.getMsgId ();
45  
46       if (msgid == null)
47      return null;
48  
49       content = e.getMsgContent();
50  
51       if (msgid.equals ("JtREMOVE")) {
52         return (this);     
53       }
54  
55       if (msgid.equals ("JtSWITCH_VALUE")) {
56         return ("Off");     
57       }
58       handleError ("processMessage: invalid message id:" + msgid);
59       return (null);
60  
61    }
62  
63   
64  }
65

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