org.eclipse.eavp.viz.service.datastructures.resource.test

Class TestComponentListener

java.lang.Object

org.eclipse.eavp.viz.service.datastructures.resource.test.TestComponentListener

All Implemented Interfaces:

IVizUpdateableListener

public class TestComponentListener
extends java.lang.Object
implements IVizUpdateableListener

This class realizes the IComponentListener interface and is used to test Component call backs in tests. It has a unlisted, volatile attribute called serviceLatch that is a CountDownLatch. It is instantiated in reset and constructor. This is used to utilize threads more effectively by waiting for a thread to be free in order to notify if a component was changed. The update operation calls countDown on the latch.

Author:

Jay Jay Billings

Field Summary

Fields inherited from interface org.eclipse.eavp.viz.datastructures.VizObject.IVizUpdateableListener

component

Constructor Summary

Constructors

Constructor and Description
TestComponentListener() The Constructor.

Method Summary

Modifier and Type	Method and Description
void	reset() This operation resets the countdownlatch to 0.
void	update(IVizUpdateable component) This operation notifies the listener that an update has occurred in the Component.
boolean	wasNotified() This operation returns the notification state of the listener.

Methods inherited from class java.lang.Object

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

Constructor Detail

TestComponentListener

public TestComponentListener()

The Constructor. Sets up the CountDownLatch to one.

Method Detail

wasNotified

public boolean wasNotified()

This operation returns the notification state of the listener.

Returns:

True if the listener has been notified of an update, false otherwise.

reset

public void reset()

This operation resets the countdownlatch to 0.

update

public void update(IVizUpdateable component)

Description copied from interface: IVizUpdateableListener

This operation notifies the listener that an update has occurred in the Component.

Specified by:

update in interface IVizUpdateableListener

Parameters:

component - The component that was updated in some way.