// Java event connector
// by Marty Stepp (stepp _ cs _ washington _ edu)

import java.util.*;

/** An Event is an improved version of a java.util.Observable. */
public class Event<T> extends Observable {
    private final String name;
    
    public Event() {
        this("event");
    }
    
    public Event(String name) {
        this.name = name;
    }
    
    public void add(Observer o) {
        this.addObserver(o);
    }
    
    public void remove(Observer o) {
        this.deleteObserver(o);
    }
    
    public void fire() {
        this.fire(null);
    }
    
    public void fire(T arg) {
        this.setChanged();
        this.notifyObservers(arg);
    }
    
    public String getName() {
        return this.name;
    }
    
    public String toString() {
        return this.name;
    }
}