1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
4 * All rights reserved. This program and the accompanying materials
5 * are made available under the terms of the Eclipse Public License v1.0
6 * which accompanies this distribution, and is available at
7 * http://www.eclipse.org/legal/epl-v10.html
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.g2d.image.impl;
14 import org.simantics.g2d.image.Image;
15 import org.simantics.utils.datastructures.ListenerList;
20 * @author Toni Kalajainen <toni.kalajainen@vtt.fi>
22 public abstract class AbstractImage implements Image {
24 ListenerList<ImageListener> list = null;
27 public void addImageListener(ImageListener listener) {
28 getListenerList().add(listener);
32 public void removeImageListener(ImageListener listener) {
33 getListenerList().remove(listener);
36 protected void notifyChanged()
40 for (ImageListener l : list.getListeners())
41 l.onContentChangedNotification(this);
44 private synchronized ListenerList<ImageListener> getListenerList()
46 if (list==null) list = new ListenerList<ImageListener>(ImageListener.class);