de.dante.extex.interpreter.observer.eof
Class EofObserverList

java.lang.Object
  extended byde.dante.extex.interpreter.observer.eof.EofObserverList
All Implemented Interfaces:
EofObserver

public final class EofObserverList
extends java.lang.Object
implements EofObserver

This class provides a type-safe list of observers for the eof event.

Version:
$Revision: 1.3 $
Author:
Gerd Neugebauer

Constructor Summary
EofObserverList()
           
 
Method Summary
 void add(EofObserver observer)
          Add an observer to the list.
static EofObserver register(EofObserver list, EofObserver observer)
          Take a list and add an observer.
 void update()
          Invoke all observers on the list to inform them of an eof on the input stream.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

EofObserverList

public EofObserverList()
Method Detail

register

public static EofObserver register(EofObserver list,
                                   EofObserver observer)
Take a list and add an observer. If the list is null then a new one is created.

Parameters:
list - the input list or null
observer - the observer to add
Returns:
the input list or a new one with the observer added

add

public void add(EofObserver observer)
Add an observer to the list.

Parameters:
observer - the observer to add to the list

update

public void update()
Invoke all observers on the list to inform them of an eof on the input stream.

Specified by:
update in interface EofObserver