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/*
 * @(#)StateModel.java  1.0  1999-10-19
 *
 * Copyright (c) 1999 Werner Randelshofer, Goldau, Switzerland.
 * All rights reserved.
 *
 * You may not use, copy or modify this file, except in compliance with the
 * license agreement you entered into with Werner Randelshofer.
 * For details see accompanying license terms.
 */
package org.monte.media;

/**
 * Generic interface for Objects with state.
 *
 * @author  Werner Randelshofer, Hausmatt 10, CH-6405 Goldau, Switzerland
 * @version    1.0  1999-10-19
 */
public interface StateModel {
  /**
   * Adds a listener that wants to be notified about
   * state changes of the model.
   */
  public void addStateListener(StateListener listener);

  /**
   * Removes a listener.
   */
  public void removeStateListener(StateListener listener);
  
  /**
   * Returns the current state of the model.
   */
  public int getState();
}