[Seaside] Seaside Components: Parent / Children

[Ramon Leon]

> -----Original Message-----
> From: seaside-bounces at lists.squeakfoundation.org 
> [mailto:seaside-bounces at lists.squeakfoundation.org] On Behalf 
> Of Sebastián Sastre
> Sent: Tuesday, May 16, 2006 9:36 AM
> To: 'The Squeak Enterprise Aubergines Server - general discussion.'
> Subject: RE: [Seaside] Seaside Components: Parent / Children
> 
> Yes but that depends of *how much* it knows about it's 
> parent. For certain features this could be really helpful. 
> Abuse produce the results you mention.
> For a reference:
> Presenters are composed by (sub)Presenters and they all know 
> it's corresponding #parentPresenter in the MPV 
> (Model-View-Presenter) framework.
> Ref:
> http://www.object-arts.com/Papers/TwistingTheTriad.PDF
> http://www.mimuw.edu.pl/~sl/teaching/00_01/Delfin_EC/Overviews
> /ModelViewPres
> enter.htm
> 
> I've made my own WAPresenter subclass wich is instantiated 
> knowing about it parentPresenter. I see the same intention in 
> 
> 	ShoreComponent class>>parent: aComponent
> 
> Until now I have been succeful in a Seaside application that 
> make intesively use of that subclasses, without coupling.
> 
> Regards,
> 
> Sebastian

Sure, it's not a problem knowing about or accessing the parent, if all parents can be treated the same, and it's often quite useful.  It's when a child has knowledge of a specific parent that the problems begin.