xyz.thepathfinder.android

Class Listenable<E extends Listener,T>

java.lang.Object

xyz.thepathfinder.android.Listenable<E,T>

Type Parameters:

E - the listener object type

T - the type of the object received by the listener in notifyUpdate(String, Object)

Direct Known Subclasses:

Authenticator, Model

public abstract class Listenable<E extends Listener,T>
extends Object

Allows objects to listen for notifications.

Field Summary

Fields

Modifier and Type	Field and Description
private List<E>	listeners The list of listeners

Constructor Summary

Constructors

Constructor and Description
Listenable() Creates a listenable object.

Method Summary

Methods

Modifier and Type	Method and Description
void	addListener(E listener) Adds a listener to the object.
List<E>	getListeners() Returns a list of all the current listeners.
protected abstract boolean	notifyUpdate(String reason, T arg) Method called when an update occurs.
void	removeListener(E listener) Removes a listener from the object.

Methods inherited from class java.lang.Object

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

Field Detail

listeners

private List<E extends Listener> listeners

The list of listeners

Constructor Detail

Listenable

public Listenable()

Creates a listenable object.

Method Detail

addListener

public void addListener(E listener)

Adds a listener to the object.

Parameters:

listener - to add.

removeListener

public void removeListener(E listener)

Removes a listener from the object.

Parameters:

listener - to remove.

getListeners

public List<E> getListeners()

Returns a list of all the current listeners.

Returns:

a list of listeners.

notifyUpdate

protected abstract boolean notifyUpdate(String reason,
                   T arg)

Method called when an update occurs.

Parameters:

reason - for notifying the model.

arg - object of the updated model.

Returns:

true if the model was updated, false otherwise.