package jrummikub.util;

import java.util.HashSet;

/** Simple parameterless event generator */
public class Event implements IEvent {
  private HashSet<IListener> listeners = new HashSet<IListener>();

  @Override
  public void add(IListener listener) {
    listeners.add(listener);
  }

  @Override
  public void remove(IListener listener) {
    listeners.remove(listener);
  }

  /** Generate a single event */
  public void emit() {
    for (IListener listener : listeners) {
      listener.handle();
    }
  }
}