1 package cz.cuni.amis.utils.flag.connective;
2
3 import cz.cuni.amis.utils.flag.Flag;
4 import cz.cuni.amis.utils.flag.FlagListener;
5
6 public class ConnectiveListener implements FlagListener<Boolean> {
7
8 Flag<Boolean> myFlag;
9
10 private Object mutex = new Object();
11
12 private int intTrue;
13 private int intFalse;
14
15 private Connective connective;
16
17 public ConnectiveListener(Connective connective, Flag<Boolean> flag, int myIndex) {
18 this.myFlag = flag;
19 this.connective = connective;
20 intTrue = 1 << myIndex;
21 intFalse = 0 ^ intTrue;
22 synchronized(mutex) {
23 this.myFlag.addListener(this);
24 if (flag.getFlag()) {
25 synchronized(connective.truthValue) {
26 connective.truthValue[0] = connective.truthValue[0] | intTrue;
27 }
28 } else {
29 synchronized(connective.truthValue) {
30 connective.truthValue[0] = connective.truthValue[0] & intFalse;
31 }
32 }
33 }
34 }
35
36 @Override
37 public void flagChanged(Boolean changedValue) {
38 if (changedValue == null || !changedValue) {
39 synchronized(connective.truthValue) {
40 connective.truthValue[0] = connective.truthValue[0] | intTrue;
41 connective.truthValueChanged();
42 }
43 } else {
44 synchronized(connective.truthValue) {
45 connective.truthValue[0] = connective.truthValue[0] & intFalse;
46 connective.truthValueChanged();
47 }
48 }
49
50 }
51
52 }