org.pentaho.di.laf

Class LAFDelegate<E extends Handler>

java.lang.Object

org.pentaho.di.laf.LAFDelegate<E>

Type Parameters:

E -

public class LAFDelegate<E extends Handler>
extends Object

A factory delegate for a specific kind of LAFHandler

Author:

dhushon

Constructor Summary

Constructors

Constructor and Description
LAFDelegate(Class<E> handler, Class<E> defaultHandler)

Method Summary

Methods

Modifier and Type	Method and Description
void	changeHandler(E handler)
E	getHandler()
HashSet<LAFChangeListener<E>>	getListeners()
void	loadListeners(HashSet<LAFChangeListener<E>> listeners)
E	newHandlerInstance(String classname) load a concrete Handler for a given Interface (by String classname) if the class is not instantiable, will fallback to default, and then fallback to an abstract implementation.
E	registerChangeListener(LAFChangeListener<E> listener)
void	unregisterChangeListener(LAFChangeListener<E> listener) unregister a @see LAFChangeListener from the Map which will prevent notification on @see Handler change

Methods inherited from class java.lang.Object

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

Constructor Detail

LAFDelegate

public LAFDelegate(Class<E> handler,
           Class<E> defaultHandler)

Method Detail

newHandlerInstance

public E newHandlerInstance(String classname)
                                     throws ClassNotFoundException

load a concrete Handler for a given Interface (by String classname) if the class is not instantiable, will fallback to default, and then fallback to an abstract implementation. Will always return non-null.

Parameters:

classname -

Returns:

Throws:

ClassNotFoundException

registerChangeListener

public E registerChangeListener(LAFChangeListener<E> listener)

unregisterChangeListener

public void unregisterChangeListener(LAFChangeListener<E> listener)

unregister a @see LAFChangeListener from the Map which will prevent notification on @see Handler change

Parameters:

listener -

getListeners

public HashSet<LAFChangeListener<E>> getListeners()

loadListeners

public void loadListeners(HashSet<LAFChangeListener<E>> listeners)

changeHandler

public void changeHandler(E handler)

getHandler

public E getHandler()