data.events
Class StockChangeAdapter

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

public class StockChangeAdapter

extends Object

implements StockChangeListener, SerializableListener

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

Extend this class to create a StockChangeEvent listener and override the methods for the events of interest. (If you implement the StockChangeListener 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 ListenableStock using the Stock's ListenableStock.addStockChangeListener(data.events.StockChangeListener) method. When the Stock's contents change, the relevant method in the listener object is invoked, and a StockChangeEvent is passed to it.

Since:

v2.0

Version:

2.0 19/08/1999

Author:

Steffen Zschaler

See Also:

Serialized Form

Constructor Summary

StockChangeAdapter()

Method Summary

void	addedStockItems(StockChangeEvent e) Called whenever StockItems were added to the Stock.
void	canEditStockItems(StockChangeEvent e) Called to ask whether certain StockItems may be edited.
void	canRemoveStockItems(StockChangeEvent e) Called to ask whether certain StockItems may be removed.
void	commitAddStockItems(StockChangeEvent e) Called whenever the adding of StockItems was commited.
void	commitEditStockItems(StockChangeEvent e) Called whenever the editing of StockItems was commited.
void	commitRemoveStockItems(StockChangeEvent e) Called whenever the removal of StockItems was commited.
void	editingStockItems(StockChangeEvent e) Called whenever the Stock began editing StockItems.
void	noEditStockItems(StockChangeEvent e) Called for each listener that already agreed with an editing that was then rejected by another listener.
void	noRemoveStockItems(StockChangeEvent e) Called for each listener that already agreed with a removal that was then rejected by another listener.
void	removedStockItems(StockChangeEvent e) Called whenever StockItems were removed from the Stock.
void	rollbackAddStockItems(StockChangeEvent e) Called whenever the adding of StockItems was rolled back.
void	rollbackEditStockItems(StockChangeEvent e) Called whenever the editing of StockItems was rolled back.
void	rollbackRemoveStockItems(StockChangeEvent e) Called whenever the removal of StockItems was rolled back.

Methods inherited from class java.lang.Object

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

Constructor Detail

StockChangeAdapter

public StockChangeAdapter()

Method Detail

addedStockItems

public void addedStockItems(StockChangeEvent e)

Called whenever StockItems were added to the Stock.

Override:

Sometimes.

Specified by:

addedStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

commitAddStockItems

public void commitAddStockItems(StockChangeEvent e)

Called whenever the adding of StockItems was commited.

Override:

Sometimes.

Specified by:

commitAddStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

rollbackAddStockItems

public void rollbackAddStockItems(StockChangeEvent e)

Called whenever the adding of StockItems was rolled back.

Override:

Sometimes.

Specified by:

rollbackAddStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

canRemoveStockItems

public void canRemoveStockItems(StockChangeEvent e)
                         throws VetoException

Called to ask whether certain StockItems may be removed. If one of the listeners vetos the removal, all listeners that had already been asked will receive a noRemoveStockItems event.

Override:

Sometimes.

Specified by:

canRemoveStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

Throws:

VetoException - if the listener wants to veto the removal.

noRemoveStockItems

public void noRemoveStockItems(StockChangeEvent e)

Called for each listener that already agreed with a removal that was then rejected by another listener.

Override:

Sometimes.

Specified by:

noRemoveStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

removedStockItems

public void removedStockItems(StockChangeEvent e)

Called whenever StockItems were removed from the Stock.

Override:

Sometimes.

Specified by:

removedStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

commitRemoveStockItems

public void commitRemoveStockItems(StockChangeEvent e)

Called whenever the removal of StockItems was commited.

Override:

Sometimes.

Specified by:

commitRemoveStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

rollbackRemoveStockItems

public void rollbackRemoveStockItems(StockChangeEvent e)

Called whenever the removal of StockItems was rolled back.

Override:

Sometimes.

Specified by:

rollbackRemoveStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

canEditStockItems

public void canEditStockItems(StockChangeEvent e)
                       throws VetoException

Called to ask whether certain StockItems may be edited. If one of the listeners vetos the editing, all listeners that had already been asked will receive a noEditStockItems event.

Override:

Sometimes.

Specified by:

canEditStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

Throws:

VetoException - if the listener wants to veto the editing.

noEditStockItems

public void noEditStockItems(StockChangeEvent e)

Called for each listener that already agreed with an editing that was then rejected by another listener.

Override:

Sometimes.

Specified by:

noEditStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

editingStockItems

public void editingStockItems(StockChangeEvent e)

Called whenever the Stock began editing StockItems. This event may be accompanied by a removedStockItems and a addedStockItems event, but this is implementation specific.

Override:

Sometimes.

Specified by:

editingStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

commitEditStockItems

public void commitEditStockItems(StockChangeEvent e)

Called whenever the editing of StockItems was commited.

Override:

Sometimes.

Specified by:

commitEditStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.

rollbackEditStockItems

public void rollbackEditStockItems(StockChangeEvent e)

Called whenever the editing of StockItems was rolled back.

Override:

Sometimes.

Specified by:

rollbackEditStockItems in interface StockChangeListener

Parameters:

e - an event object describing the event.