@Override
public synchronized Collection<StateHolder> selectAll(long timeout, TimeUnit timeUnit)
throws InterruptedException {
Timer timer = new Timer(timeout, timeUnit).start();
List<StateHolder> result = new ArrayList<StateHolder>();
List<Object> inState = new ArrayList<Object>();
while (!timer.time()) {
if (watchedObjects.isEmpty())
throw new IllegalArgumentException("register some objects to wait its states");
for (Map.Entry<Object, List<State>> en : watchedObjects.entrySet()) {
for (State state : en.getValue()) {
if (state.checkState(en.getKey())) {
result.add(new StateHolder(state, en.getKey()));
if (!inState.contains(en.getKey())) inState.add(en.getKey());
}
}
}
if (inState.containsAll(watchedObjects.keySet())) return result;
else result.clear();
if (timer.left() == 0) this.wait();
else this.wait(timer.left());
}
return null;
}
@Override
public synchronized StateHolder selectFirst(long timeout, TimeUnit timeUnit)
throws InterruptedException {
for (int i = 0; i < 2; i++) {
if (watchedObjects.isEmpty())
throw new IllegalArgumentException("register some objects to wait its states");
for (Map.Entry<Object, List<State>> en : watchedObjects.entrySet()) {
for (State state : en.getValue()) {
if (state.checkState(en.getKey())) return new StateHolder(state, en.getKey());
}
}
if (i == 0)
if (timeout == 0) this.wait();
else this.wait(TimeUnit.MILLISECONDS.convert(timeout, timeUnit));
}
return null;
}
@Override
public <T> void register(State<T> state, T object) {
List<State> states = watchedObjects.get(object);
if (states == null) states = new ArrayList<State>();
states.add(state);
watchedObjects.put(object, states);
List<EventHandler> handlers = eventHandlers.get(object);
if (handlers == null) handlers = new ArrayList<EventHandler>();
EventProcessor processor = this.processor;
EventFilter filter = state.getTrigger();
if (registerListenerOnObject && object instanceof EventProcessor)
processor = (EventProcessor) object;
else filter = new ProducerEventFilter(object).andFilterBy(filter);
processor.addListener(new SelectorListener(), filter);
}
