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