package prefuse.data.event;
import java.util.EventListener;
import prefuse.data.util.ColumnProjection;
/**
* Listener interface for monitoring changes to the state of a
* column projection filter.
*
* @author <a href="http://jheer.org">jeffrey heer</a>
*/
public interface ProjectionListener extends EventListener {
/**
* Notification that the internal state of a projection has been updated.
* @param projection the source of the change notification
*/
public void projectionChanged(ColumnProjection projection);
} // end of interface ProjectionListener