net.sf.jguiraffe.gui.builder.enablers

Class InverseEnabler

java.lang.Object

net.sf.jguiraffe.gui.builder.enablers.InverseEnabler

All Implemented Interfaces:

ElementEnabler

public class InverseEnabler
extends Object
implements ElementEnabler

A specialized implementation of the ElementEnabler interface that wraps another ElementEnabler and inverses the setEnabledState() implementation of this wrapped enabler.

An instance of this class is initialized with a reference to another ElementEnabler. The setEnabledState(ComponentBuilderData, boolean) implementation delegates to this enabler, but the state argument is inverted. This means if this enabler is told to enable elements, it tells the wrapped enabler to disable its element and vice versa. This is useful for instance for using an existing ElementEnabler in a context where the exactly opposite behavior is required.

Version:

$Id: InverseEnabler.java 205 2012-01-29 18:29:57Z oheger $

Author:

Oliver Heger

Constructor Summary

Constructors

Constructor and Description
InverseEnabler(ElementEnabler wrapped) Creates a new instance of InverseEnabler and initializes it with ElementEnabler to be wrapped.

Method Summary

Modifier and Type	Method and Description
ElementEnabler	getWrappedEnabler() Returns the ElementEnabler wrapped by this object.
void	setEnabledState(ComponentBuilderData compData, boolean state) Performs the change of the enabled state.

Methods inherited from class java.lang.Object

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

Constructor Detail

InverseEnabler

public InverseEnabler(ElementEnabler wrapped)

Creates a new instance of InverseEnabler and initializes it with ElementEnabler to be wrapped.

Parameters:

wrapped - the wrapped ElementEnabler (must not be null)

Throws:

IllegalArgumentException - if the wrapped ElementEnabler is null

Method Detail

getWrappedEnabler

public ElementEnabler getWrappedEnabler()

Returns the ElementEnabler wrapped by this object.

Returns:

the wrapped ElementEnabler

setEnabledState

public void setEnabledState(ComponentBuilderData compData,
                            boolean state)
                     throws FormBuilderException

Performs the change of the enabled state. This implementation calls the wrapped ElementEnabler with the inverted state argument.

Specified by:

setEnabledState in interface ElementEnabler

Parameters:

compData - the ComponentBuilderData instance

state - the new enabled state

Throws:

FormBuilderException - if the wrapped ElementEnabler throws an exception