[ https://issues.apache.org/jira/browse/ISIS-105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13065307#comment-13065307 ] 

Kevin Meyer commented on ISIS-105:
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By inserting a check into the scalar panel base class (ComponentFactoryScalarAbstract), that creates a ValueChoicesPanel if the ScalarModel has choices present, all value types now present the user with a drop-down list of value in edit mode. 
This works for both choicesXXXX for properties, and choicesNXXXX for parameters.
An outstanding problem is that the drop-down list is not initialised with the existing value of the property / parameter.

> Implement support for value parameter choices, defaults, etc.
> -------------------------------------------------------------
>
>                 Key: ISIS-105
>                 URL: https://issues.apache.org/jira/browse/ISIS-105
>             Project: Isis
>          Issue Type: New Feature
>          Components: Viewer: Wicket
>            Reporter: Kevin Meyer
>            Priority: Minor
>              Labels: wicket
>
> Currently the Wicket viewer only supports Entity choice support (i.e. if a choicesXXXX() method exists, it is only used if the item is an entity, not a value).
> This should be extended to include support for values.
> This also extends to defaultXXX(), etc, if it isn't already supported.
> I have added "ValueCollectionFactory" and a "ValueCollection" skeleton classes, and included a "addComponentFactoriesForValueChoices" to "ComponentFactoryListDefault". I have also added a "VALUE_COLLECTION" to the ComponentType enum.
> But I can't quite see where to go from here!

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