Delegate a Modelchange to the child components. Or using a ModalWindow for displaying different Models of a specific Type.

[Martin U]

Its not easy to find the right topic, but i will try to explain my problem
as best as i can.

I want to display an user-detail View (User is an BusinessObject in my
Application) inside a specific Modal window.


So at the rendering of the Site i place an "empty" or dummy UserObject
inside my UserEdit-Panel and later if the user choose one specific user from
a Table i want to replace this dummy-Model with the clicked-User-Model.

public class UserEdit extends Panel {

    /**
     * @param id
     * @param model
     */

    private IModel<User> model;
    CompoundPropertyModel<User> cpm;

    public UserEdit(String id, IModel<User> _model) {
        super(id, _model);

        this.model = _model;

        init();
    }

    private void init(){

        cpm = new CompoundPropertyModel<User>(this.getDefaultModelObject());

        this.add(new TextField("lastname",  cpm.bind("lastName")) );
    }
}

I dont know if its the right choice to  use a cpm ... but i think its the
proper way right?

The UserEdit is the "content" of my ModalWindow implementation so i bore up
the "show" method with a new Model-Parameter to delegate them to the Inside
Content...

(inside ModelOverlay.class)

public void show(final AjaxRequestTarget target, IModel<T> model)
{
        if (shown == false)
        {
            getContent().setVisible(true);
            getContent().setDefaultModel(model);  // <- my new Line ;o)
            target.addComponent(this);
            target.appendJavascript(getWindowOpenJavascript());
            shown = true;
        }
}

The Model inside "UserEdit" is changed. But how can i archieve that the
lastname-Textfield now displays the Value of getLastName() from the new,
submitted Model?
In my opinion i tried everything... tried to override the
"onModelChange"-Event and tryed to set the new Model with an Visitor of
every childfield... but than i
lost my "expression" from the CPM and only
pages.adminuserpage$u...@17eea10is shown inside the Textfield.

Thanks for any help. Am i totally lost.. or am i on the right way and few
steps before the solution?

I hope you understand my problem... if not so tell me and i will try to
explain it in another way or even better...


Apologise my english, its not my mothers tongue!

- Martin