Re: [Pharo-users] "whenSelectedItemChanged:" in Spec
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 wrote: > I'm not familiar with Spec but I'll have a go... > > On Wed, 17 Jul 2019 at 07:03, Steve Quezadas wrote: > > > On Tue, Jul 16, 2019 at 7:43 AM Ben Coman wrote: > >> > >> On Tue, 16 Jul 2019 at 12:49, Steve Quezadas > 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 > >
Re: [Pharo-users] "whenSelectedItemChanged:" in Spec
I'm not familiar with Spec but I'll have a go... On Wed, 17 Jul 2019 at 07:03, Steve Quezadas wrote: > On Tue, Jul 16, 2019 at 7:43 AM Ben Coman wrote: >> >> On Tue, 16 Jul 2019 at 12:49, Steve Quezadas 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
Re: [Pharo-users] "whenSelectedItemChanged:" in Spec
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. ! ! !WidgetClassList methodsFor: 'api' stamp: 'SteveQuezadas 6/26/2019 18:22'! title ^ 'Widgets'! ! !WidgetClassList methodsFor: 'api' stamp: 'SteveQuezadas 7/15/2019 19:09'! list ^ list.! ! "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "! WidgetClassList class instanceVariableNames: ''! !WidgetClassList class methodsFor: 'specs' stamp: 'SteveQuezadas 7/10/2019 14:14'! defaultSpec ^ SpecLayout composed add: #list; yourself! ! On Tue, Jul 16, 2019 at 7:43 AM Ben Coman wrote: > On Tue, 16 Jul 2019 at 12:49, Steve Quezadas 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 > >
Re: [Pharo-users] "whenSelectedItemChanged:" in Spec
Steve How did you get the source code for the examples? Pages 12-13 of the "Spec UI Framework" booklet give the code for the methods of class WidgetClassList, and there we find: WidgetClassList >> whenSelectedItemChanged: aBlock list whenSelectedItemChanged: aBlock This looks very much like the 'when' methods of all the other subclasses of ComposablePresenter. It should at least do something when activated. HTH Peter Kenny -Original Message- From: Pharo-users On Behalf Of Ben Coman Sent: 16 July 2019 15:42 To: Any question about pharo is welcome Subject: Re: [Pharo-users] "whenSelectedItemChanged:" in Spec On Tue, 16 Jul 2019 at 12:49, Steve Quezadas 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
Re: [Pharo-users] "whenSelectedItemChanged:" in Spec
On Tue, 16 Jul 2019 at 12:49, Steve Quezadas 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
[Pharo-users] "whenSelectedItemChanged:" in Spec
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. - Steve
