data.events
Class DataBasketAdapter

java.lang.Object
  |
  +--data.events.DataBasketAdapter

public abstract class DataBasketAdapter

extends Object

implements DataBasketListener

An abstract adapter class for receiving data basket change events. The methods in this class are empty. This class exists as convenience for creating listener objects.

Extend this class to create a DataBasketEvent listener and override the methods for the events of interest. (If you implement the DataBasketListener interface, you have to define all of the methods in it. This abstract class defines empty method bodies for them all, so you can concentrate on defining methods only for events you care about.)

Create a listener object using the extended class and then register it with a ListenableDataBasket using the DataBasket's ListenableDataBasket.addDataBasketListener(data.events.DataBasketListener) method. When the DataBasket's contents change, the relevant method in the listener object is invoked, and a DataBasketEvent is passed to it.

Since:

v2.0

Version:

2.0 19/08/1999

Author:

Steffen Zschaler

Constructor Summary

DataBasketAdapter()

Method Summary

void	addedDBE(DataBasketEvent e) Called when a DataBasketEntry was added to the DataBasket.
void	dataBasketChanged(DataBasketEvent e) Called when the DataBasket changed in a manner too complex for the two other types of events.
void	removedDBE(DataBasketEvent e) Called when a DataBasketEntry was removed from the DataBasket.

Methods inherited from class java.lang.Object

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

Constructor Detail

DataBasketAdapter

public DataBasketAdapter()

Method Detail

addedDBE

public void addedDBE(DataBasketEvent e)

Called when a DataBasketEntry was added to the DataBasket.

Override:

Sometimes.

Specified by:

addedDBE in interface DataBasketListener

Parameters:

e - an event object that describes the event.

removedDBE

public void removedDBE(DataBasketEvent e)

Called when a DataBasketEntry was removed from the DataBasket.

Override:

Sometimes.

Specified by:

removedDBE in interface DataBasketListener

Parameters:

e - an event object that describes the event.

dataBasketChanged

public void dataBasketChanged(DataBasketEvent e)

Called when the DataBasket changed in a manner too complex for the two other types of events.

Override:

Sometimes.

Specified by:

dataBasketChanged in interface DataBasketListener

Parameters:

e - an event object that describes the event. (e.getAffectedEntry() == null!)