de.dante.extex.scanner.stream.observer.reader
Class OpenReaderObserverList

java.lang.Object
  de.dante.extex.scanner.stream.observer.reader.OpenReaderObserverList

All Implemented Interfaces:

OpenReaderObserver

public final class OpenReaderObserverList

extends java.lang.Object

implements OpenReaderObserver

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

Version:

$Revision: 1.3 $

Author:

Gerd Neugebauer

OpenReaderObserverList

public OpenReaderObserverList()

register

public static OpenReaderObserver register(OpenReaderObserver list,
                                          OpenReaderObserver 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(OpenReaderObserver observer)

Add an observer to the list.

Parameters:

observer - the observer to add to the list

update

public void update(java.io.Reader reader)

Invoke all observers on the list to inform them of the reader which has been opened.

Specified by:

update in interface OpenReaderObserver

Parameters:

reader - the reader to be processed

See Also:

OpenReaderObserver.update( java.io.Reader)