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https://issues.apache.org/jira/browse/WICKET-3247?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12969945#action_12969945
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Martin Dilger commented on WICKET-3247:
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Oh my god, I did not realize this feature, thank you so much for your hint!

> Provide a possibility to send Objects to nested components within Form Submit
> -----------------------------------------------------------------------------
>
>                 Key: WICKET-3247
>                 URL: https://issues.apache.org/jira/browse/WICKET-3247
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket
>    Affects Versions: 1.5-M3
>            Reporter: Martin Dilger
>
> I deeply miss the possibility to send Objects to nested Components from 
> FormSubmit.
> Image this Scenario;
> On a Page, you submit a Form and you get some Result from a Backend-System, 
> for example a List of AddressCorrections (List<AddresData>).
> Your Page uses a couple of Panels, like a PersonDataPanel that uses an 
> AdressPanel internally.
> I want the Possibility to send the Adresscorrections to the AdressPanel that 
> handles them (Painting the AdressFields, activating a DropDownChoice for 
> AdressChoice or something like that).
> Currently you need to provide access to the Components withing the Nested 
> Panels (like getAdressDropDown).
> I suggest something like an Interface, that interested Components can 
> implement:
> IFormSubmitCallback {
>    onFormSubmit(Object value);
> }
> In the Page, within onSubmit, you should be able to send an IVisitor, that 
> looks for this Interface, calls onFormSubmit and provides interested 
> components
> with the corresponding value.
> ..
> onSubmit(){
>      Object result = backend.getSomeResult();
>      visitComponents(new FormSubmitVisitor(result)); 
> }
> I'm highly interested in your opinion on this and would love to try to 
> provide a patch,  but first of all, please correct me if this is nonsense, 
> thank you!

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