[Pharo-users] Spec layout

stepharo stepharo at free.fr
Wed May 18 05:22:46 EDT 2016


But why from the class side.

buttons
     ^ buttons

returns an empty collection

and

rebuildWidget
     self widgets removeAll.
     self createWidgets.
     self needFullRebuild: false.
     self buildWithSpecLayout: self dynamicLayout.
     self alignButtons



Le 18/5/16 à 11:31, Marion Noirbent a écrit :
> I was trying to use it but i have still the problem to call the 
> instance method from the class side, so i call the 
> buildWithSpecLayout: in the method to add buttons in the collection, 
> it seems work but i have an "MessageNotUnderstood" RadioButton>>layout:
>
> Le 18/05/2016 09:20, stepharo a écrit :
>> marion the solution is what peter proposes.
>>
>> Stef
>>
>>
>> Le 18/5/16 à 11:14, Marion Noirbent a écrit :
>>> In fact i was trying to modify RadioButtonGroup to turn it into a
>>> widget, #buttons is not a widget but its collection of widget.
>>>
>>> May you have confused RadioButtonGroup with the MenuModel /
>>> MenuGroupModel / MenuItemModel which are widgets. I take inspiration
>>> from them and I would got the same kind of behaviour.
>>>
>>> Le 17/05/2016 21:11, stepharo a écrit :
>>>> Thanks Johan
>>>>
>>>>
>>>> We looked at
>>>>
>>>> RadioButtonGroupExample
>>>>
>>>> but you see we cannot have a RadioButtonGroupPresenter having 2, 3 
>>>> or 4
>>>> radioButton.
>>>>
>>>> Stef
>>>>
>>>>
>>>> Le 17/5/16 à 18:52, Johan Fabry a écrit :
>>>>> Hi Marion,
>>>>>
>>>>> the class side message of defaultSpec is generally meant to be 
>>>>> used if
>>>>> you use a fixed number of widgets, so you can put the reference to 
>>>>> the
>>>>> name of each widget there (in cour case #buttons). For variable 
>>>>> number
>>>>> of widgets you should have a look at the dynamic features of Spec.
>>>>>
>>>>> That being said, It looks like what you really want to use is a Radio
>>>>> Button Group. Have a look at RadioButtonGroupExample.
>>>>>
>>>>> HTH
>>>>>
>>>>> -- 
>>>>> Does this mail seem too brief? Sorry for that, I don’t mean to be
>>>>> rude! Please see http://emailcharter.org .
>>>>>
>>>>> Johan Fabry   -   http://pleiad.cl/~jfabry
>>>>> PLEIAD and RyCh labs  -  Computer Science Department (DCC)  -
>>>>> University of Chile
>>>>>
>>>>>> On May 17, 2016, at 13:48, Marion Noirbent
>>>>>> <ms.noirbent at etudiant.univ-lille1.fr> wrote:
>>>>>>
>>>>>> Hi,
>>>>>> I'm trying to create a widget whith Spec, managing a collection of
>>>>>> RadioButton. But I have a problem with defaultSpec (the accessor of
>>>>>> the collection is the methods "buttons") :
>>>>>>
>>>>>> If i put defaultSpec on class side, i can't acces the collection of
>>>>>> the instance. (the following code iterate on the string)
>>>>>>
>>>>>> defaultSpec
>>>>>>     <spec: #default>
>>>>>>     ^ SpecLayout composed
>>>>>>         newColumn: [ :column | #buttons do: [ :item | column add:
>>>>>> item ] ];
>>>>>>         yourself
>>>>>>
>>>>>> If i put it on instance side, the lookup don't find it (in the book
>>>>>> Building UI with Spec, it said the lookup begin by the instance side
>>>>>> and it allow to have specific UI, in part about layout)
>>>>>>
>>>>>> defaultSpec
>>>>>>     <spec: #default>
>>>>>>     ^ SpecLayout composed
>>>>>>         newColumn: [ :column | self buttons do: [ :item | column 
>>>>>> add:
>>>>>> item ] ];
>>>>>>         yourself
>>>>>>
>>>>>> Any idea ?
>>>>>>
>>>>>> Marion Noirbent,
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>
>>
>





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