source: trunk/src_apollo/org/apollo/mvc/Subject.java@ 315

package org.apollo.mvc;

/**
 * A Subject is any object that wants to notify other objects of
 * changes in its state. 
 *@author Brook Novak
 */
public interface Subject {

        /**
         * Adds an observer to the set of Observers for this subject.
         * @param ob the Observer to be added.
         */
        void addObserver(Observer ob);

        /**
         * Removes an Observer from the set of Observers for this subject.
         * @param ob the Observer to be removed.
         */
        void removeObserver(Observer ob);

}