File: /Users/shatabdi/Education/GitHub/se450_project/src/model/others/CommandHandler.java
1
2 package model.others;
3
4 import java.util.ArrayList;
5 import java.util.List;
6
7 import model.interfaces.IObserver;
8
9 public class CommandHandler {
10
11 List<IObserver> observerList = new ArrayList<>();
12
13 public void registerObserver(IObserver observer) {
14 if (!observerList.contains(observer)) {
15 observerList.add(observer);
16 }
17 }
18
19 public void removeObserver(IObserver observer) {
20 observerList.remove(observer);
21 }
22
23 public void notifyObservers() {
24 for (IObserver observer : observerList) {
25 observer.update();
26 }
27 }
28
29 public void clear() {
30 observerList.clear();
31 }
32 }
33