package scheduler.ScheduleProject;

import scheduler.Database.*;
import scheduler.Generate.*;
import scheduler.Edit.*;
import scheduler.ViewSchedule.*;

import java.util.Collection;

/**
 *
 * 
         PreviousState is the snapshot of Schedules before the most
        
 * recently performed scheduling operation used by EditUndo.  The
        
 * Schedule, Change, and Delete operations save the previous state to
         support Undo.
       * 
 * @author 
 * @version 
 *
 **/

public class PreviousState {

     /** Default Constructor **/
     public PreviousState() {

     }

     protected Collection<ScheduleProject> data;

}