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package jrummikub.util;
import java.util.HashSet;
/**
* Simple single parameter event generator
*
* @param <T>
* type of the event parameter
*/
public class Event1<T> implements IEvent1<T> {
private HashSet<IListener1<T>> listeners = new HashSet<IListener1<T>>();
@Override
public Connection add(final IListener1<T> listener) {
listeners.add(listener);
return new Connection() {
@Override
public void remove() {
Event1.this.remove(listener);
}
};
}
@Override
public void remove(IListener1<T> listener) {
listeners.remove(listener);
}
/**
* Generate a single event
*
* @param value
* the event parameter
*/
public void emit(T value) {
for (IListener1<T> listener : new HashSet<IListener1<T>>(listeners)) {
listener.handle(value);
}
}
}
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