at the end of the fifth page " The widgets have now been defined and configured, but their placement in the UI has not yet been specified. This is the role of the class side method defaultSpec . " CustomerSatisfaction class >> defaultSpec ^ SpecLayout composed newRow: [ :row | row add: #buttonHappy; add: #buttonNeutral; add: #buttonBad ] origin: 0 @ 0 corner: 1 @ 0.7; newRow: [ :row | row add: #screen ] origin: 0 @ 0.7 corner: 1 @ 1; yourself 2018-03-21 5:12 GMT+03:00 dragoncity <dragoncitybrett@gmail.com>:
Hello, I'm just getting into Pharo, and am trying to do the example 'tutorial' UI programs in chapter 2 of The Spec UI Framework book. I have a special interest in end user GUI interfaces for programs. I enter the first example code as written and the methods are all accepted without errors. And yes, I did generate the accessors.
However , on attempting to execute the code at the bottom of page 6 from the latest Spec UI Framework book,
| ui |
ui := CustomerSatisfaction newopenWithSpec.
ui close.
this error message appears, no UI image appears of course.
"SubclassResponsibility:CustomerSatisfaction class had the subclass responsibility to implement #defaultSpec"
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Not only don't I understand the message, but it implies I have to write something called #defaultSpec !, which is not mentioned in the tutorial.
Any help appreciated,
Yours,
-- Cheers, Brett