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root/i-scream/experimental/MNote/uk/org/iscream/mnote/MNoteProtocolHandler.java
Revision: 1.1
Committed: Thu Jun 14 09:16:08 2001 UTC (23 years, 5 months ago) by ajm
Branch: MAIN
CVS Tags: HEAD
Log Message:
initial checkin of the Multicast Notification System

File Contents

# Content
1 package uk.org.iscream.mnote;
2
3 import java.util.Vector;
4
5 class MNoteProtocolHandler {
6
7 public void processMessage(String message) {
8 if (message.startsWith("REGISTER")) {
9 fireRegisterEvent(new RegisterEvent(message.substring(8)));
10 } else if (message.startsWith("NOTIFY")) {
11 fireNotificationEvent(new NotificationEvent(message.substring(6)));
12 }
13 }
14
15 public void sendRegister(String name) {
16 fireSendEvent(new SendEvent("REGISTER" + name));
17 }
18
19 public void sendNotification(String message) {
20 fireSendEvent(new SendEvent("NOTIFY" + message));
21 }
22
23 public void addSendListener(SendListener listener) {
24 synchronized (_sendListeners) {
25 _sendListeners.add(listener);
26 }
27 }
28
29 public void addRegisterListener(RegisterListener listener) {
30 synchronized (_registerListeners) {
31 _registerListeners.add(listener);
32 }
33 }
34
35 public void addNotificationListener(NotificationListener listener) {
36 synchronized (_notificationListeners) {
37 _notificationListeners.add(listener);
38 }
39 }
40
41 private void fireSendEvent(SendEvent se) {
42 if (_sendListeners.isEmpty()) {
43 return;
44 }
45
46 Vector v;
47 synchronized (_sendListeners) {
48 v = (Vector) _sendListeners.clone();
49 }
50
51 for ( int i = 0; i < v.size(); i++) {
52 SendListener sl = (SendListener) v.elementAt(i);
53 sl.acceptSendEvent(se);
54 }
55 }
56
57 private void fireRegisterEvent(RegisterEvent re) {
58 if (_registerListeners.isEmpty()) {
59 return;
60 }
61
62 Vector v;
63 synchronized (_registerListeners) {
64 v = (Vector) _registerListeners.clone();
65 }
66
67 for ( int i = 0; i < v.size(); i++) {
68 RegisterListener rl = (RegisterListener) v.elementAt(i);
69 rl.acceptRegisterEvent(re);
70 }
71 }
72
73 private void fireNotificationEvent(NotificationEvent ne) {
74 if (_notificationListeners.isEmpty()) {
75 return;
76 }
77
78 Vector v;
79 synchronized (_notificationListeners) {
80 v = (Vector) _notificationListeners.clone();
81 }
82
83 for ( int i = 0; i < v.size(); i++) {
84 NotificationListener nl = (NotificationListener) v.elementAt(i);
85 nl.acceptNotificationEvent(ne);
86 }
87 }
88
89 private Vector _sendListeners = new Vector();
90 private Vector _registerListeners = new Vector();
91 private Vector _notificationListeners = new Vector();
92 }