Class Observer

Object
   |
   +--OObject
         |
         +--Observer

Direct Known Subclasses:

Model

class Observer

extends OObject

This class acts as the abstract base class for each "observer class" (ala Observer design pattern).

 Subclasses of Observer should define/override:
   (1) the update() method which accepts update events
       and takes one parameter which is the "observable"
       plus one optional adhoc parameter.

Constructor Detail

Observer

Observer()

Author: Bruce Wallace (PolyGlotInc.com)
Version: 1.0

konstructor

void konstructor()

subscribe

void subscribe( <Observable> observable )

subscribe to (aka watch/monitor/observe) the given observable

Parameters:
observable - object to monitor

update

void update( <Observable> observable, <Object> optAdhocObj )

override this method with your logic to respond to an update event from one of the Observables you are subscribed to.

Parameters:
observable - the generator of this update event
optAdhocObj - optional adhoc object passed by sender