[UI] Improving ToolBuilder

[Gary Chambers]

Reply, no, I was right. Down to the odd behaviour of #ifEmpty: that will
always return nil.

> -----Original Message-----
> From: ui-bounces at lists.squeakfoundation.org 
> [mailto:ui-bounces at lists.squeakfoundation.org] On Behalf Of 
> Gary Chambers
> Sent: 18 September 2007 11:43 am
> To: 'Squeak's User Interface'
> Subject: RE: [UI] Improving ToolBuilder
> 
> 
> Best take the last one from Andreas. What was I thinking... 
> (ifEmpty: []).
> 
> > -----Original Message-----
> > From: ui-bounces at lists.squeakfoundation.org
> > [mailto:ui-bounces at lists.squeakfoundation.org] On Behalf Of 
> > Gary Chambers
> > Sent: 18 September 2007 11:25 am
> > To: Squeak's User Interface
> > Subject: RE: [UI] Improving ToolBuilder
> > 
> > 
> > > But how can I change
> > > 
> > > OBMorphicPlatform>>handleConfirmationRequest: request
> > >   ^ PopUpMenu
> > >         confirm: request prompt
> > >         trueChoice: request okChoice
> > >         falseChoice: request cancelChoice
> > > 
> > > There is no such method in UIManager.
> > 
> > 	^(UIManager default confirm: request prompt)
> > 		ifTrue: [request okChoice]
> > 		ifFalse: [request cancelChoice]
> > 
> > > And this one:
> > > 
> > > OBMorphicPlatform>>handleTextRequest: request
> > >   ^ FillInTheBlankMorph
> > >        request: request prompt
> > >        initialAnswer: request template
> > >        centerAt: Sensor cursorPoint
> > >        inWorld: World
> > >        onCancelReturn: nil
> > >        acceptOnCR: true
> > > 
> > > There is no way of returning nil on Cancel. The empty string is 
> > > always returned.
> > 
> > To be fair this is a limitation of the UIManager spec.
> > 
> > Assuming that an affirmative "empty" answer can count as
> > being cancelled then...
> > 
> > 	^(UIManager default
> > 			request: request prompt
> > 			initialAnswer: request template)
> > 		ifNotEmptyDo: [:answer | answer]
> > 
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> > 
> 
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