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 <dragoncitybr...@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" > > ====== > > 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 > > >
