T
- public class EnumChoiceRenderer<T extends Enum<T>> extends ChoiceRenderer<T>
IChoiceRenderer
implementation that makes it easy to work with java 5 enums. This
renderer will attempt to lookup strings used for the display value using a localizer of a given
component. If the component is not specified, the global instance of localizer will be used for
lookups.
display value resource key format: <enum.getSimpleClassName()>.<enum.name()>
id value format: <enum.name()>
Constructor and Description |
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EnumChoiceRenderer()
Constructor that creates the choice renderer that will use global instance of localizer to
resolve resource keys.
|
EnumChoiceRenderer(Component resourceSource)
Constructor
|
Modifier and Type | Method and Description |
---|---|
Object |
getDisplayValue(T object)
Get the value for displaying to an end user.
|
String |
getIdValue(T object,
int index)
This method is called to get the id value of an object (used as the value attribute of a
choice element) The id can be extracted from the object like a primary key, or if the list is
stable you could just return a toString of the index.
|
protected String |
resourceKey(T object)
Translates the
object into resource key that will be used to lookup the value shown
to the user |
getObject
public EnumChoiceRenderer()
public EnumChoiceRenderer(Component resourceSource)
resourceSource
- public Object getDisplayValue(T object)
getDisplayValue
in interface IChoiceRenderer<T extends Enum<T>>
getDisplayValue
in class ChoiceRenderer<T extends Enum<T>>
object
- the actual objectprotected String resourceKey(T object)
object
into resource key that will be used to lookup the value shown
to the userobject
- public String getIdValue(T object, int index)
Note that the given index can be -1
if the object in question is not contained in the
available choices.
getIdValue
in interface IChoiceRenderer<T extends Enum<T>>
getIdValue
in class ChoiceRenderer<T extends Enum<T>>
object
- The object for which the id should be generatedindex
- The index of the object in the choices list.Copyright © 2006–2016 Apache Software Foundation. All rights reserved.