Package VASSAL.tools.concurrent.listener

Class DefaultMultiEventListenerSupport

java.lang.Object

VASSAL.tools.concurrent.listener.DefaultMultiEventListenerSupport

All Implemented Interfaces:

MultiEventListenerSupport

public class DefaultMultiEventListenerSupport
extends Object
implements MultiEventListenerSupport

A class to provide support for EventListeners.

Since:

3.2.0

Author:

Joel Uckelman

Field Summary

Fields

Modifier and Type	Field	Description
protected final ConcurrentMap<Class<?>,List<EventListener<?>>>	listeners
protected final Object	src

Constructor Summary

Constructors

Constructor	Description
DefaultMultiEventListenerSupport(Object src)	Creates a DefaultMultiEventListenerSupport.

Method Summary

Modifier and Type	Method	Description
<T> void	addEventListener(Class<T> c, EventListener<? super T> l)	Adds an EventListener.
<T> List<EventListener<? super T>>	getEventListeners(Class<T> c)	Gets the list of listeners.
boolean	hasEventListeners(Class<?> c)	Checks whether there are any EventListeners.
void	notify(Object event)	Notify the listeners of an event.
protected List<EventListener<?>>	registerType(Class<?> c)
<T> void	removeEventListener(Class<T> c, EventListener<? super T> l)	Removes an EventListener.

Methods inherited from class java.lang.Object

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

Field Details

listeners

protected final ConcurrentMap<Class<?>,List<EventListener<?>>> listeners

src

protected final Object src

Constructor Details

DefaultMultiEventListenerSupport

public DefaultMultiEventListenerSupport(Object src)

Creates a DefaultMultiEventListenerSupport.

Parameters:

src - the source of events

Method Details

addEventListener

public <T> void addEventListener(Class<T> c,
 EventListener<? super T> l)

Adds an EventListener.

Specified by:

addEventListener in interface MultiEventListenerSupport

Parameters:

c - the class to listen for

l - the listener to add

removeEventListener

public <T> void removeEventListener(Class<T> c,
 EventListener<? super T> l)

Removes an EventListener.

Specified by:

removeEventListener in interface MultiEventListenerSupport

Parameters:

c - the class to check

l - the listener to remove

hasEventListeners

public boolean hasEventListeners(Class<?> c)

Checks whether there are any EventListeners.

Specified by:

hasEventListeners in interface MultiEventListenerSupport

Parameters:

c - the class to check

Returns:

true if there are any listeners for the given class

getEventListeners

public <T> List<EventListener<? super T>> getEventListeners(Class<T> c)

Gets the list of listeners.

Specified by:

getEventListeners in interface MultiEventListenerSupport

Parameters:

c - the class to check

Returns:

the list of listeners for the given class

notify

public void notify(Object event)

Notify the listeners of an event.

Specified by:

notify in interface MultiEventListenerSupport

Parameters:

event - the event to send

registerType

protected List<EventListener<?>> registerType(Class<?> c)