com.robopupu.api.util

Class AbstractListenable<T_Listener>

java.lang.Object

com.robopupu.api.util.AbstractListenable<T_Listener>

All Implemented Interfaces:

Listenable<T_Listener>

Direct Known Subclasses:

AbstractObservableModel

public abstract class AbstractListenable<T_Listener>
extends java.lang.Object
implements Listenable<T_Listener>

AbstractListenable is an abstract base class for concrete implementations of Listenable interface.

Nested Class Summary

Nested classes/interfaces inherited from interface com.robopupu.api.util.Listenable

Listenable.Singled

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractListenable()

Method Summary

Modifier and Type	Method and Description
boolean	addListener(T_Listener listener)
int	getListenerCount()
java.util.List<T_Listener>	getListeners()
T_Listener	getSingleListener() Return a single listener if there is only one listener.
boolean	hasAnyListeners()
boolean	isSingled() Test if this Listenable is annotated with Listenable.Singled to indicate that this Listenable is allowed to have at most a single listener.
void	removeAllListeners()
boolean	removeListener(T_Listener listener)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractListenable

protected AbstractListenable()

Method Detail

getSingleListener

public T_Listener getSingleListener()

Description copied from interface: Listenable

Return a single listener if there is only one listener. Otherwise throws a IllegalStateException

Specified by:

getSingleListener in interface Listenable<T_Listener>

Returns:

A listener.

getListeners

public final java.util.List<T_Listener> getListeners()

Specified by:

getListeners in interface Listenable<T_Listener>

getListenerCount

public int getListenerCount()

Specified by:

getListenerCount in interface Listenable<T_Listener>

addListener

public boolean addListener(T_Listener listener)

Specified by:

addListener in interface Listenable<T_Listener>

removeListener

public boolean removeListener(T_Listener listener)

Specified by:

removeListener in interface Listenable<T_Listener>

removeAllListeners

public void removeAllListeners()

Specified by:

removeAllListeners in interface Listenable<T_Listener>

hasAnyListeners

public boolean hasAnyListeners()

Specified by:

hasAnyListeners in interface Listenable<T_Listener>

isSingled

public boolean isSingled()

Description copied from interface: Listenable

Test if this Listenable is annotated with Listenable.Singled to indicate that this Listenable is allowed to have at most a single listener.

Specified by:

isSingled in interface Listenable<T_Listener>

Returns:

A boolean value.