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.diagram.symbollibrary;
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16 * An interface representing a single group in a symbol library.
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18 * @author Tuukka Lehtonen
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20 public interface IModifiableSymbolGroup extends ISymbolGroup {
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23 * Each invocation will add a new listener regardless of whether the
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24 * listener was already registered or not.
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28 void addListener(ISymbolGroupListener listener);
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31 * Removes the first occurrence of listener. If the listener is added
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32 * multiple times, then it must be removed as many times.
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36 void removeListener(ISymbolGroupListener listener);
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