Editor framework and Command pattern

Hello,

I'd like to port an older GWT application to GWT 2.2 and make use of the Editor framework and the Requestfactory to reduce some code. The current application uses the command pattern to provide an undo/redo functionality. For databinding, each model class has extensive listener interfaces (onTitleChanged(), onDescriptionChanged(), etc) and widgets are updated by using these listeners. Accordingly, each possible change through a widget is reflected in a separate command class. Because all of this is handwritten code, it amounts to quite a lot of clutter.

I can rather easily replace the underlying data model with EntityProxies to simplify server communication. But can I use the Editor framework, or parts of it, to implement a command pattern? Possibly be providing my own kind of EditorDriver?

The driver would need to be able to register changes in the child editors/widgets instantly (onBlur, etc), create a command and put it on the stack. Also the driver needs to register "outside" changes (like the undo button) to the entity and update the the child editors accordingly. Is this possible? I realize that I need to write a couple of deferred binding generators, but does it make sense to (partly) use the Editor infrastructure for this, or is it just not at all designed for that?

Regards,

Tobias

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