I reviewed your code. There was some misunderstanding I think about how to rebuild widgets :)
I patch your version so the toolbar is only responsible of its own layout, and the ChangingButton too. I can not commit in your repo since I do not have proper rights :) Ben On Jul 9, 2013, at 9:18 AM, Andrei Vasile Chis <chisvasileand...@gmail.com> wrote: > If you decide to use this example for the Spec chapter I could do another > pass on the code and make it nicer. > > Andrei > > > On Tue, Jul 9, 2013 at 9:11 AM, Stéphane Ducasse <stephane.duca...@inria.fr> > wrote: > Ben > > I'm still fuzzy after a flood in the flat we rent at 2 in the morning :) > but I was thinking that may be we can use this example to explain the dynamic > part of spec. > So can you take this view also when you look at the code? > If this sounds good to you, I will put on the stack that I should look and > see how to put it in the Spec chapter. > > Stef > > On Jul 8, 2013, at 11:05 PM, Andrei Vasile Chis <chisvasileand...@gmail.com> > wrote: > >> Hi, >> >> I've implemented a small UI using the dynamic features of spec and I'd like >> to know if there isn't a better way to do it. My use case is simple: I have >> a normal ComposableModel that has two models - a list and a >> DynamicComposableModel. The DynamicComposableModel should contain a list of >> buttons that should change every time the user selects an element in the >> list. I've implemented a demo that can be seen if you download the package >> DynamicSpec-Examples from >> http://www.smalltalkhub.com/mc/AndreiChis/Playground/main and execute the >> code from the class comment of DSChangingButtons. >> >> My problem is that the widget containing the buttons has to define a spec >> layout on the class side. I haven't found a way to tell the spec layout to >> add a widget and use a method on the object for constructing the layout. >> I've manage to get away by dynamically reconstructing the layout when the >> selection changes, however it's not that nice because I had to duplicate the >> layout of the main widget both on the class side and the object side. It >> would be nice to add a widget to the layout like this: 'aSpec dynamicAdd: >> modelGetter withSpec: aSymbol ' that would call aSymbol on the object and >> not on the class. This may or may not make sense :) >> >> To be concrete, the method DSToolbarModel>>updateButtons will call the >> method dynamicLayout on it's parent which in turn will call >> dynamicLayoutWithSpec: on the toolbar. I'd like to avoid this, and when >> specifying the layout of the parent widget to call a method on the instance >> side of it subwidgets to get their layout. >> >> Now I'll end here this rather long email :) >> >> Cheers, >> Andrei > >
