Oh, I see. Ok, I am somewhat new to pharo smalltalk so I'm getting used to the paradigm. Thank you. The best way to learn is to "do". I can learn a lot by trying to figure out ways around unexpected behavior.
On Tue, Jul 16, 2019 at 5:39 PM Ben Coman <b...@openinworld.com> wrote: > I'm not familiar with Spec but I'll have a go... > > On Wed, 17 Jul 2019 at 07:03, Steve Quezadas <steve...@gmail.com> wrote: > > > On Tue, Jul 16, 2019 at 7:43 AM Ben Coman <b...@openinworld.com> wrote: > >> > >> On Tue, 16 Jul 2019 at 12:49, Steve Quezadas <steve...@gmail.com> > wrote: > >> > > >> > I am running through the "Spec UI Framework" tutorial, and in it has > a widget class inherited from "ComposablePresenter" (ComposablePresenter > subclass: #WidgetClassList). But for some reason the > "whenSelectedItemChanged:" method call does not execute when I select any > item on the GUI list. Is there anything I'm missing? > >> > > >> > I posted this earlier on the list, and someone suggested I try > "whenActivatedDo:" or "whenSelectionChangedDo:", but it doesn't do anything > as well. The code looks like this: > >> > > >> > whenSelectedItemChanged: aBlock > >> > Transcript show: 'should get here; cr. > >> > > >> > I am using Pharo 7. > >> > >> Can you FileOut the entire sample class and attached it? > >> > >> cheers -ben > >> > > > > Ok, I filed out and it exported the file 'WidgetClassList.st' . This is > the contents of the file: > > > > 'From Pharo7.0.3 of 12 April 2019 [Build information: > Pharo-7.0.3+build.158.sha.0903ade8a6c96633f07e0a7f1baa9a5d48cfdf55 (64 > Bit)] on 16 July 2019 at 3:58:28.785036 pm'! > > ComposablePresenter subclass: #WidgetClassList > > instanceVariableNames: 'list' > > classVariableNames: '' > > poolDictionaries: '' > > category: 'QuotesProg'! > > > > !WidgetClassList methodsFor: 'initialization' stamp: 'SteveQuezadas > 7/10/2019 14:07'! > > initializeWidgets > > list := self newList. > > list items: (AbstractWidgetPresenter allSubclasses > > sorted: [:a :b | a name < b name ]). > > self focusOrder add: list.! ! > > > > > > !WidgetClassList methodsFor: 'events-shortcuts' stamp: 'SteveQuezadas > 7/15/2019 21:40'! > > whenSelectedItemChanged: aBlock > > Transcript show: 'got here'; cr. > > ! ! > > Looking at ListPresenter>>whenSelectedItemChanged: aBlock > it is registering aBlock on selectionHolder using #whenChangedDo: > Reviewing selectionHolder "Code search...>References to it" I see that > selectionHolder is initialized as an instance of SelectionHolderClass. > > So it seems you are expecting whenSelectedItemChanged: to be called > every time the-selection-is-changed > when actually it is only called once (by your application) to register > the block-to-be-called when the-selection-is-changed. > You don't seem to have done any such registration. > > cheers -ben > >
