[Seaside] Oddness with #lightbox: in VW

Boris Popov boris at deepcovelabs.com
Thu Apr 26 17:22:21 UTC 2007

Which version of Seaside and SeasideScriptaculous are you using? There
was a change in the call/answer recently that I found in my YUI panel
use and myself and Lukas updated my implementation and his #lightbox: to
raise a render notification at the end to make it work properly again.
Its already part of the most recent version in public repository, but
here's a relevant method that you need,

lightbox: aComponent
	^ AnswerContinuation currentDo: [ :cc |
			show: aComponent
			onAnswer: cc
			delegation: (Seaside.SULightbox new
				delegate: aComponent;
		WARenderNotification raiseSignal ]

By the way, this #lightbox has nothing to do with AJAX per se; it's just
a fancy way to render a modal component ;)

Hope this helps,


DeepCove Labs Ltd.
4th floor 595 Howe Street
Vancouver, Canada V6C 2T5

boris at deepcovelabs.com


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Thank you.

> -----Original Message-----
> From: seaside-bounces at lists.squeakfoundation.org [mailto:seaside-
> bounces at lists.squeakfoundation.org] On Behalf Of Yann Monclair
> Sent: Thursday, April 26, 2007 9:57 AM
> To: The Squeak Enterprise Aubergines Server - general discussion.
> Subject: [Seaside] Oddness with #lightbox: in VW
> Hi all,
> I've been playing around with Scriptaculous in VisualWorks, creating
> a sample application as a demo for co-workers.
> During the ajax-ication of my application, I came to use #lightbox:
> instead of #call:
> Now this lead to an error in my page rendering ( a MNU) and after
> investigation I found out that, when you do
> r:=self lightbox: (aComponent).
> r will first have for value self , then when aComponent will answer,
> it will have for value the object answered by aComponent.
> This is not the same behaviour as #lightbox: in Squeak! So I suspect
> it is a VW problem.
> I put together a quick test case app, to reproduce the bug.
> Component1 calls component2. everytime it does a call (with #call: or
> #lightbox: ) it inspects the value or r. As you will see, with #call:,
> r is inspected only once, and has the proper value. With #lightbox: r
> is inspected twice, first holding self , then holding the proper
> I will try to look into the problem myself, but any help is
> appreciated :)
> Thanks,
> Yann Monclair
> PS: for the lucky people coming to Smalltalk Solutions 2007, I'll see
> you in Toronto!

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