EventListenerList2.java

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/*
 * Gridarta MMORPG map editor for Crossfire, Daimonin and similar games.
 * Copyright (C) 2000-2015 The Gridarta Developers.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

package net.sf.gridarta.utils;

import java.io.Serializable;
import java.util.EventListener;
import javax.swing.event.EventListenerList;
import org.jetbrains.annotations.NotNull;

public class EventListenerList2<T extends EventListener> implements Serializable {

    private static final long serialVersionUID = 1L;

    @NotNull
    private final Class<T> t;

    @NotNull
    private final EventListenerList eventListenerList = new EventListenerList();

    //Assume the constructor call has passed the right type; can't use Class<T>
    //here since class literals do not work for parametrized types.
    @SuppressWarnings("unchecked")
    public EventListenerList2(@NotNull final Class<? extends EventListener> t) {
        this.t = (Class<T>) t;
    }

    @NotNull
    public T[] getListeners() {
        return eventListenerList.getListeners(t);
    }

    public int getListenerCount() {
        return eventListenerList.getListenerCount(t);
    }

    public void add(@NotNull final T listener) {
        eventListenerList.add(t, listener);
    }

    public void remove(@NotNull final T listener) {
        eventListenerList.remove(t, listener);
    }

    @NotNull
    @Override
    public String toString() {
        return eventListenerList.toString();
    }

}