uk.org.ogsadai.common.properties
Class PropertyEventDispatcher

java.lang.Object
  |
  +--uk.org.ogsadai.common.properties.PropertyEventDispatcher

All Implemented Interfaces:

PropertyListener

public class PropertyEventDispatcher

extends java.lang.Object

implements PropertyListener

A thread-safe class for dispatching property events to a collection of property listeners.

This class implements the PropertyListener interface for the sake of consistency. Each time one of the methods of this interface is invoked, the corresponding event will be dispatched to each of the registered listeners.

Author:

The OGSA-DAI Project Team

Field Summary

private static java.lang.String	COPYRIGHT_NOTICE
private java.util.Collection	mListeners

Constructor Summary

PropertyEventDispatcher()

Method Summary

void	addPropertyListener(PropertyListener listener) Registers a property listner which will be notified of subsequent property events.
void	propertyAdded(PropertyEvent event) Handles the property added event by invoking the propertyAdded() method on each property listener.
void	propertyRemoved(PropertyEvent event) Handles the property removed event by invoking the propertyRemoved() method on each property listener.
void	propertyUpdated(PropertyEvent event) Handles the property updated event by invoking the propertyUpdated() method on each property listener.

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT_NOTICE

private static final java.lang.String COPYRIGHT_NOTICE

See Also:

Constant Field Values

mListeners

private final java.util.Collection mListeners

Constructor Detail

PropertyEventDispatcher

public PropertyEventDispatcher()

Method Detail

addPropertyListener

public void addPropertyListener(PropertyListener listener)

Registers a property listner which will be notified of subsequent property events.

Parameters:

listener - The PropertyListener to register

Throws:

java.lang.IllegalArgumentException - if listener is null.

propertyAdded

public void propertyAdded(PropertyEvent event)

Handles the property added event by invoking the propertyAdded() method on each property listener.

Specified by:

propertyAdded in interface PropertyListener

Parameters:

event - Describes details of the event.

Throws:

java.lang.IllegalArgumentException - if event is null.

See Also:

PropertyListener.propertyAdded(uk.org.ogsadai.common.properties.PropertyEvent)

propertyRemoved

public void propertyRemoved(PropertyEvent event)

Handles the property removed event by invoking the propertyRemoved() method on each property listener.

Specified by:

propertyRemoved in interface PropertyListener

Parameters:

event - Describes details of the event.

Throws:

java.lang.IllegalArgumentException - if event is null.

See Also:

PropertyListener.propertyRemoved(uk.org.ogsadai.common.properties.PropertyEvent)

propertyUpdated

public void propertyUpdated(PropertyEvent event)

Handles the property updated event by invoking the propertyUpdated() method on each property listener.

Specified by:

propertyUpdated in interface PropertyListener

Parameters:

event - Describes details of the event.

Throws:

java.lang.IllegalArgumentException - if event is null.