ExpandObserverList

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de.dante.extex.interpreter.observer.expand
Class ExpandObserverList

java.lang.Object
  de.dante.extex.interpreter.observer.expand.ExpandObserverList

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

Constructor Summary
`ExpandObserverList()`

Method Summary
`void`	`add(ExpandObserver observer)` Add an observer to the list.
`static ExpandObserver`	`register(ExpandObserver list, ExpandObserver observer)` Take a list and add an observer.
`void`	`update(Token token)` Invoke all observers on the list to inform them of the token to be expanded.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

public ExpandObserverList()

Method Detail

public static ExpandObserver register(ExpandObserver list,
                                      ExpandObserver 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

public void add(ExpandObserver observer)

Add an observer to the list.

public void update(Token token)

Invoke all observers on the list to inform them of the token to be expanded.