net.wotonomy.control
Class EOObserverProxy

java.lang.Object
  net.wotonomy.control.EODelayedObserver
      net.wotonomy.control.EOObserverProxy

All Implemented Interfaces:

java.util.Observer, EOObserving

public class EOObserverProxy
extends EODelayedObserver

A convenience observer for objects that do not or cannot subclass EODelayedObserver. EOObserverProxy will invoke an NSSelector on an object when it receives a subjectChanged message.

Version:

$Revision: 893 $

Author:

michael@mpowers.net, $Author: cgruber $

Field Summary

protected int	priority
protected net.wotonomy.foundation.NSSelector	selector
protected java.lang.Object	target

Fields inherited from class net.wotonomy.control.EODelayedObserver

ObserverNumberOfPriorities, ObserverPriorityFifth, ObserverPriorityFirst, ObserverPriorityFourth, ObserverPriorityImmediate, ObserverPriorityLater, ObserverPrioritySecond, ObserverPrioritySixth, ObserverPriorityThird

Constructor Summary

EOObserverProxy(java.lang.Object anObject, net.wotonomy.foundation.NSSelector aSelector)
Constructs an EODelayedObserver that will invoke the specified selector on the specified object, and will run at ObserverPriorityThird priority, which is the default.

EOObserverProxy(java.lang.Object anObject, net.wotonomy.foundation.NSSelector aSelector, int aPriority)
Constructs an EODelayedObserver that will invoke the specified selector on the specified object, and will run at the specified priority.

Method Summary

int	priority() Returns the priority of this observer in the queue.
void	subjectChanged() Notifies observer that one or more objects that it is observing have changed.

Methods inherited from class net.wotonomy.control.EODelayedObserver

discardPendingNotification, objectWillChange, observerQueue, update

Methods inherited from class java.lang.Object

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

Field Detail

target

protected java.lang.Object target

selector

protected net.wotonomy.foundation.NSSelector selector

priority

protected int priority

Constructor Detail

EOObserverProxy

public EOObserverProxy(java.lang.Object anObject,
                       net.wotonomy.foundation.NSSelector aSelector,
                       int aPriority)

Constructs an EODelayedObserver that will invoke the specified selector on the specified object, and will run at the specified priority.

EOObserverProxy

public EOObserverProxy(java.lang.Object anObject,
                       net.wotonomy.foundation.NSSelector aSelector)

Constructs an EODelayedObserver that will invoke the specified selector on the specified object, and will run at ObserverPriorityThird priority, which is the default.

Method Detail

priority

public int priority()

Returns the priority of this observer in the queue. This implementation returns the priority specified in the constructor.

Overrides:

priority in class EODelayedObserver

subjectChanged

public void subjectChanged()

Notifies observer that one or more objects that it is observing have changed. The observer should check all objects it is observing for changes.

Specified by:

subjectChanged in class EODelayedObserver