[Wicket-develop] Form - custom form level validation

[Cameron Braid]

I wish to implement form level validation, and was wondering that the recommended approach is ?   I would like to be able to do this validation before Form.onSubmit() – since I would like to prevent the model from being updated in the case of invalid input.   Form.validate() is final.  So either this needs to be changed, or a different soloution could be implemented :   Some ideas :   1)       validate() could call a new template method validateForm(). 2)       enhance Form to support adding IFormValidator instances, and process them after processing the form components’s IValidator instances.   Cameron.