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package jrummikub.util;
import java.util.HashSet;
/**
* Simple single parameter event generator
*
* @param <T1>
* type of the first event parameter
* @param <T2>
* type of the second event parameter
*/
public class Event2<T1, T2> implements IEvent2<T1, T2> {
private HashSet<IListener2<T1, T2>> listeners = new HashSet<IListener2<T1, T2>>();
@Override
public Connection add(final IListener2<T1, T2> listener) {
listeners.add(listener);
return new Connection() {
@Override
public void remove() {
Event2.this.remove(listener);
}
};
}
@Override
public void remove(IListener2<T1, T2> listener) {
listeners.remove(listener);
}
/**
* Generate a single event
*
* @param value1
* the first event parameter
* @param value2
* the second event parameter
*/
public void emit(T1 value1, T2 value2) {
for (IListener2<T1, T2> listener : new HashSet<IListener2<T1, T2>>(listeners)) {
listener.handle(value1, value2);
}
}
}
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