PlotSubject.java

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 * Mission Control Technologies, Copyright (c) 2009-2012, United States Government
 * as represented by the Administrator of the National Aeronautics and Space 
 * Administration. All rights reserved.
 *
 * The MCT platform is licensed under the Apache License, Version 2.0 (the 
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package gov.nasa.arc.mct.fastplot.bridge;
/**
 * Subject in the Observer Pattern pattern. Classes implementing this interface allow observers to 
 * register/unregister themselves and be updated when specified events occur
 * 
 * http://en.wikipedia.org/wiki/Observer_pattern
 */
public interface PlotSubject {
	
	public void registerObservor(PlotObserver o);
	
	public void removeObserver(PlotObserver o);
	
	public void notifyObserversTimeChange(); 
	
	public void notifyObserversAxisChanged(AbstractAxis axis);
}