Package de.swa.fuh.qrefinement.observer

Class ImageObservers

java.lang.Object

de.swa.fuh.qrefinement.observer.AbstractObserver

de.swa.fuh.qrefinement.observer.ImageObservers

public class ImageObservers
extends AbstractObserver

Concrete observer container class to manage observing objects interested in changes of image assets (e.g. addition or deletion of relevance marks). The class is responsible to inform all registered observing objects. Part of the implementation of the observer pattern.

Author:

Nicolas Boch

Method Summary

Modifier and Type	Method	Description
static ImageObservers	getInstance()
void	notifyAdd(java.io.File f, Rectangle mark)
void	notifyChange(java.io.File f)
void	subscribe(UpdateMarks subscriber)
void	unsubscribe(UpdateMarks subscriber)

Methods inherited from class java.lang.Object

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

Method Details

getInstance

public static ImageObservers getInstance()

subscribe

public void subscribe(UpdateMarks subscriber)

Specified by:

subscribe in class AbstractObserver

unsubscribe

public void unsubscribe(UpdateMarks subscriber)

Specified by:

unsubscribe in class AbstractObserver

notifyAdd

public void notifyAdd(java.io.File f, Rectangle mark)

notifyChange

public void notifyChange(java.io.File f)

Specified by:

notifyChange in class AbstractObserver