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1
4 package com.tc.config.schema.dynamic;
5
6 import com.tc.util.Assert;
7
8 import java.util.HashSet  ;
9 import java.util.Set ;
10
11
14 public class CompoundConfigItemListener implements ConfigItemListener {
15
16 private final Set listeners;
17
18 public CompoundConfigItemListener() {
19 this.listeners = new HashSet ();
20 }
21
22 public synchronized void addListener(ConfigItemListener listener) {
23 Assert.assertNotNull(listener);
24 this.listeners.add(listener);
25 }
26
27 public synchronized void removeListener(ConfigItemListener listener) {
28 Assert.assertNotNull(listener);
29 this.listeners.remove(listener);
30 }
31
32 public void valueChanged(Object oldValue, Object newValue) {
33 ConfigItemListener[] duplicate;
34
35 synchronized (this) {
36 duplicate = (ConfigItemListener[]) this.listeners.toArray(new ConfigItemListener[this.listeners.size()]);
37 }
38
39 for (int i = 0; i < duplicate.length; ++i) {
40 duplicate[i].valueChanged(oldValue, newValue);
41 }
42 }
43
44 }
45
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