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