net.sf.jguiraffe.gui.builder.components.model

Class DefaultRadioButtonHandler

java.lang.Object

net.sf.jguiraffe.gui.builder.components.AbstractCompositeComponentHandler<T,Boolean>

net.sf.jguiraffe.gui.builder.components.model.AbstractRadioButtonHandler<Integer>

net.sf.jguiraffe.gui.builder.components.model.DefaultRadioButtonHandler

All Implemented Interfaces:

CompositeComponentHandler<Integer,Boolean>, ComponentHandler<Integer>

public class DefaultRadioButtonHandler
extends AbstractRadioButtonHandler<Integer>

A concrete default implementation of a CompositeComponentHandler for a group of radio buttons.

An instance of this class is used as ComponentHandler for a radio button group if no specific handler class is specified. This implementation just uses the index of the selected button in the group as data. So a Java bean acting as model for a form that contains a radio button group should have a corresponding property of type Integer for this group. Note that really Integer should be used instead of int because the value can be set to null if no radio button in the group is selected.

Implementation note: This class is not thread-safe.

Version:

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

Author:

Oliver Heger

Constructor Summary

Constructors

Constructor and Description
DefaultRadioButtonHandler() Creates a new instance of DefaultRadioButtonHandler.

Method Summary

Modifier and Type	Method and Description
protected int	getButtonIndex(Integer value) Returns the index of the radio button in the associated group that represents the passed in data value.
protected Integer	getDataForButton(int idx) Returns the data value that corresponds to the radio button with the given index.

Methods inherited from class net.sf.jguiraffe.gui.builder.components.model.AbstractRadioButtonHandler

getData, getUnselectedData, getUnselectedIndex, setData

Methods inherited from class net.sf.jguiraffe.gui.builder.components.AbstractCompositeComponentHandler

addHandler, getChildHandler, getChildHandlerCount, getChildHandlerIndex, getChildHandlerNameAt, getChildHandlerNames, getChildHandlers, getComponent, getOuterComponent, getType, isEnabled, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultRadioButtonHandler

public DefaultRadioButtonHandler()

Creates a new instance of DefaultRadioButtonHandler.

Method Detail

getButtonIndex

protected int getButtonIndex(Integer value)

Returns the index of the radio button in the associated group that represents the passed in data value. Because the data value is interpreted as the selected index it is simply returned.

Specified by:

getButtonIndex in class AbstractRadioButtonHandler<Integer>

Parameters:

value - the data value

Returns:

the index of the corresponding radio button

getDataForButton

protected Integer getDataForButton(int idx)

Returns the data value that corresponds to the radio button with the given index. Again because there is a 1:1 mapping between radio button index and data value the index can be directly returned as value.

Specified by:

getDataForButton in class AbstractRadioButtonHandler<Integer>

Parameters:

idx - the index of the selected radio button

Returns:

the corresponding data value