[izpack-devel] private to protected -> Objection

[Marc Eppelmann]

Hi Elmar,

Yes OK, you are right. What a thickheaded and inelegant idea. Shame on me 
I will search for another better solution ;-)

Cheers
Marc

Am Freitag, 1. September 2006 21:53 schrieb Elmar Grom:
> Hi Marc,
>
> I do object. This is against the very important principles of information
> hiding.
>
> I am not sure which fields you want to access from your subclass. I would
> strongly advise to find other approaches to solve your problem. Writing
> subclasses with detailed knowledge of the inside workings of the super
> class, such as data fields, is never a good idea. This is particularly true
> in such a disconnected case as you present. If we ever make changes to
> those data fields or how we use them, anyone who wrote a subclass will see
> their code break. In many cases there will be no obvious indication of that
> fact.
>
> Instead we should strive to have a clean and dependable interface that
> subclasses can really depend on.
>
> 	Elmar
>
> -----Original Message-----
> From: izpack-devel-bounces at lists.berlios.de
> [mailto:izpack-devel-bounces at lists.berlios.de]On Behalf Of Marc
> Eppelmann
> Sent: Friday, September 01, 2006 11:57 AM
> To: izpack-devel at lists.berlios.de
> Subject: [izpack-devel] private to protected
>
>
> Hi all,
>
> I want to change the fields and methods of the UserInputPanel from private
> to
> protected, to make it possible to derive an userdefined UserInputPanel from
> it. If there is nobody which has an objection about it, I will commit this
> next week at Tuesday. Then I will describe and document the features(** of
> my
> derived ExtendedUserInputPanel and if there is anybody that interests on, I
> will commit this.
>
> **) such as userdefined Title Layouts.
>
> Cheers
> Marc
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