| 1 | package com.hammurapi.common; |
| 2 | |
| 3 | import java.util.Map; |
| 4 | import java.util.concurrent.ConcurrentHashMap; |
| 5 | |
| 6 | /** |
| 7 | * Wraps java.util.Observable into com.hammurapi.Observable. |
| 8 | * @author Pavel Vlasov |
| 9 | * |
| 10 | */ |
| 11 | public class ObservableAdapter implements Observable<java.util.Observable> { |
| 12 | |
| 13 | private java.util.Observable observable; |
| 14 | |
| 15 | |
| 16 | public ObservableAdapter(java.util.Observable observable) { |
| 17 | this.observable = observable; |
| 18 | } |
| 19 | |
| 20 | private Map<Observer<?>, java.util.Observer> observerMap = new ConcurrentHashMap<Observer<?>, java.util.Observer>(); |
| 21 | |
| 22 | |
| 23 | @Override |
| 24 | public void addObserver(final Observer<? super java.util.Observable> observer) { |
| 25 | java.util.Observer uo = new java.util.Observer() { |
| 26 | |
| 27 | @Override |
| 28 | public void update(java.util.Observable o, Object arg) { |
| 29 | observer.update(observable); |
| 30 | } |
| 31 | |
| 32 | }; |
| 33 | observerMap.put(observer, uo); |
| 34 | } |
| 35 | |
| 36 | @Override |
| 37 | public void deleteObserver(Observer<? super java.util.Observable> o) { |
| 38 | observable.deleteObserver(observerMap.remove(o)); |
| 39 | } |
| 40 | } |