Feature Suggestion - LOV Window

I used to program in Oracle ADF long time ago. Oracle ADF has so many nice feature that I see could be migrated into grails.

Suppose I am create an Employee that belongs to a department. Instead of display the departement field as a dropdown list, I want to able to tell the script, that for this property generate an LOV window.

LOV Window: A link or a button that will open a pop-up window, to allow user to search for the department for example. Once he select the department, that will update parent page.

If you are not going to adopt this idea, can anyone please guide how to start implementing these in the Grails framework.

Is there any architectural documentation on the source code of Grails. I have so many ideas and want to contribute to the Grails open source project.

No source file, test, or entry point is named. Start by clarifying whether this should be a Grails framework feature and how the LOV window should be configured and connected to the parent form; done would require an agreed scope and implementation location.

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