nl.knowledgeplaza.util
Class ListenerHandler<L,E>

java.lang.Object
  nl.knowledgeplaza.util.ListenerHandler<L,E>

Type Parameters:

L -

E -

public class ListenerHandler<L,E>
extends Object

This is a generic implementation of a listener logic. Usage with the default listener (which has no event) with custom interface: // service side public interface TotalsListener extends ListenerHandler.Listen {}; final public ListenerHandler totalsListeners = ListenerHandler.newListenerHandler(); // client side someinstance.totalsListeners.add(new SomeClass.TotalsListener(){ @Override public void run() { ... }}); Usage with the default listener (which has no event) without custom interface: // service side final public ListenerHandler totalsListeners = ListenerHandler.newListenerHandler(); // client side someinstance.totalsListeners.add(new ListenerHandler.Listen(){ @Override public void run() { ... }}); Usage with a custom listener and no event: // service side public interface TotalsListener { public void totalsUpdated(); } final public ListenerHandler totalsListeners = new ListenerHandler() { public void fire(TotalsListener listener, Object event) { listener.totalsUpdated(); } }; // client side someinstance.totalsListeners.add(new TotalsListener() {

Nested Class Summary

static interface

ListenerHandler.Listen This is the generic interface that can be used

Constructor Summary

ListenerHandler()

ListenerHandler(boolean fireOnce)

Method Summary

void	add(L value) the listeners
void	fire()
void	fire(E event) fire
void	fire(L listener, E event) This method should be overriden if other listeners and events are to be used
Map<L,Throwable>	fireIndividually(E event) fire, but catch exceptions so all will be fired
boolean	getFireOnce()
static <K,V> ListenerHandler<K,V>	newListenerHandler() quickly create a type save instance
void	remove(L value)
void	resetFireOnce()
void	resetFireOnce(L value) for single mode: triggered listeners
void	setFireOnce(boolean value) FireOnce

Methods inherited from class java.lang.Object

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

Constructor Detail

ListenerHandler

public ListenerHandler()

ListenerHandler

public ListenerHandler(boolean fireOnce)

Method Detail

add

public void add(L value)

the listeners

remove

public void remove(L value)

setFireOnce

public void setFireOnce(boolean value)

FireOnce

getFireOnce

public boolean getFireOnce()

resetFireOnce

public void resetFireOnce(L value)

for single mode: triggered listeners

resetFireOnce

public void resetFireOnce()

fire

public void fire(E event)

fire

fire

public void fire()

fireIndividually

public Map<L,Throwable> fireIndividually(E event)

fire, but catch exceptions so all will be fired

fire

public void fire(L listener,
                 E event)

This method should be overriden if other listeners and events are to be used

newListenerHandler

public static <K,V> ListenerHandler<K,V> newListenerHandler()

quickly create a type save instance