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 *******************************************************************************/
13 package org.simantics.utils.threads.ua;
16 * Listener for state changes
18 * @author Toni Kalajainen (toni.kalajainen@vtt.fi)
20 public interface StateListener<StateType> {
23 * Call-back for state transition
25 * @param sender State monitor object
26 * @param oldState new state
27 * @param newState new state
29 void onStateTransition(IStatefulObject<StateType, ?> sender, StateType oldState, StateType newState);