util
Interface HelpableListener

All Known Implementing Classes:

CatalogFilter, CatalogTableModel, CountingStockTableModel, DataBasketTableModel, StoringStockTableModel, UserTableModel, UserListModel

public interface HelpableListener

extends EventListener

A listener that can be helped by ListenerHelper. HelpableListeners must use a ListenerHelper to maintain their list of listeners. Whenever a query is performed on the HelpableListener it must assure up-to-date-ness of its model by calling (@link ListenerHelper#needModelUpdate}.

Since:

v2.0

Version:

2.0 02/06/1999

Author:

Steffen Zschaler

See Also:

ListenerHelper

Method Summary

void	subscribe() Called when the listener should subscribe to its own event source.
void	unsubscribe() Called when the listener should unsubscribe from its own event source.
void	updateModel() Called to update the listeners own model representation.

Method Detail

subscribe

public void subscribe()

Called when the listener should subscribe to its own event source.

Override:

Always.

unsubscribe

public void unsubscribe()

Called when the listener should unsubscribe from its own event source.

Override:

Always.

updateModel

public void updateModel()

Called to update the listeners own model representation.

Override:

Always.