Package org.jivesoftware.smackx.workgroup.util

Class ListenerEventDispatcher

java.lang.Object

org.jivesoftware.smackx.workgroup.util.ListenerEventDispatcher

All Implemented Interfaces:

Runnable

public class ListenerEventDispatcher
extends Object
implements Runnable

This class is a very flexible event dispatcher which implements Runnable so that it can dispatch easily from a newly created thread. The usage of this in code is more or less: create a new instance of this class, use addListenerTriplet to add as many listeners as desired to be messaged, create a new Thread using the instance of this class created as the argument to the constructor, start the new Thread instance.

Also, this is intended to be used to message methods that either return void, or have a return which the developer using this class is uninterested in receiving.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	ListenerEventDispatcher.TripletContainer

Field Summary

Fields

Modifier and Type	Field	Description
protected boolean	hasFinishedDispatching
protected boolean	isRunning
protected ArrayList<ListenerEventDispatcher.TripletContainer>	triplets

Constructor Summary

Constructors

Constructor	Description
ListenerEventDispatcher()

Method Summary

Modifier and Type	Method	Description
void	addListenerTriplet(Object listenerInstance, Method listenerMethod, Object[] methodArguments)	Add a listener triplet - the instance of the listener to be messaged, the Method on which the listener should be messaged, and the Object array of arguments to be supplied to the Method.
boolean	hasFinished()	Has finished.
void	run()

Methods inherited from class java.lang.Object

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

Field Details

triplets

protected transient ArrayList<ListenerEventDispatcher.TripletContainer> triplets

hasFinishedDispatching

protected transient boolean hasFinishedDispatching

isRunning

protected transient boolean isRunning

Constructor Details

ListenerEventDispatcher

public ListenerEventDispatcher()

Method Details

addListenerTriplet

public void addListenerTriplet(Object listenerInstance,
 Method listenerMethod,
 Object[] methodArguments)

Add a listener triplet - the instance of the listener to be messaged, the Method on which the listener should be messaged, and the Object array of arguments to be supplied to the Method. No attempts are made to determine whether this triplet was already added.
Messages are dispatched in the order in which they're added via this method; so if triplet X is added after triplet Z, then triplet Z will undergo messaging prior to triplet X.
This method should not be called once the owning Thread instance has been started; if it is called, the triplet will not be added to the messaging queue.

Parameters:

listenerInstance - the instance of the listener to receive the associated notification

listenerMethod - the Method instance representing the method through which notification will occur

methodArguments - the arguments supplied to the notification method

hasFinished

public boolean hasFinished()

Has finished.

Returns:

whether this instance has finished dispatching its messages

run

public void run()

Specified by:

run in interface Runnable