package user;

import java.util.*;

/**
 * The representation of a class, both for long-term roster data, and for short
 * term instances of presentations.
 */
public class EClass {
   /**
    * User that owns this EClass, has full executive controll over the class.
    */
   RegisteredUser instructor;
   
   /**
    * Roster of students registered in this EClass.
    */
   Collection<Student> students;
   
   /**
    * Collection of users currently in an active presentation session.
    */
   Collection<User> particpants;
   
   /**
    * Null if there is no current activeSession, or a reference to said session
    * if not null.
    */
   presentation.Presentation activeSession;
   
   /**
    * Name of this class, eg, "Gene Fisher's CPE 308 Class"
    */
   String name;
   
   /**
    * Subject of this EClass.
    */ 
   String subject;
   
   /**
    * Collection of all presentations given to this EClass.
    */
   Collection<presentation.Presentation> presentations;
   
   /**
    * Collection of applicable permission for each user.
    */
   Collection<UserPermissions> userPermissions;
   
   /**
    * Collection of default permissions for each UserLevel, used for having a
    *  set of permissions for those without explicit UserPermissions's.
    */
   Collection<LevelPermissions> defaultPermissions;
}