2 * Sonitus - AbstractControlledComponent.java - Copyright © 2013 David Roden
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 package net.pterodactylus.sonitus.data;
20 import java.util.List;
22 import com.google.common.collect.Lists;
25 * Abstract {@link ControlledComponent} implementation that takes care of
26 * managing {@link MetadataListener}s.
28 * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
30 public abstract class AbstractControlledComponent implements ControlledComponent {
32 /** The list of metadata listeners. */
33 private final List<MetadataListener> metadataListeners = Lists.newArrayList();
36 // LISTENER MANAGEMENT
40 public void addMetadataListener(MetadataListener metadataListener) {
41 metadataListeners.add(metadataListener);
45 public void removeMetadataListener(MetadataListener metadataListener) {
46 metadataListeners.remove(metadataListener);
54 * Notifies all registered metadata listeners that the metadata has changed.
59 protected void fireMetadataUpdated(Metadata metadata) {
60 for (MetadataListener metadataListener : metadataListeners) {
61 metadataListener.metadataUpdated(this, metadata);