[Pharo-users] beginner question - how to get a fully qualified filename from a dialog

[amaloney]

I have a method:
openSimulationFile
        inFile := (StandardFileStream fileNamed:
'/Users/amaloney/Squeak/30shoes.txt') ascii
I want to replace the hard coded fully qualified filename with the result of
a file browser dialog.

I've done some Googling and poked around in the system browser and I find
that if I enter (in a playground)
UIManager default chooseDirectory and inspect-it I get: a FileReference
(/Users/amaloney/Squeak)
and if I try UIManager default chooseFileMatching: #( '*.txt' ) I get: a
ByteString ('Readme.txt').

It seems that UIManager chooseDirectory is the method I should start
exploring (since it returns a FileReference object) but the method is:
chooseDirectory
        "Let the user choose a directory"
        ^self chooseDirectoryFrom: FileSystem workingDirectory

and when I look at chooseDirectoryFrom: I get 
chooseDirectoryFrom: dir
        "Let the user choose a directory"
        ^self chooseDirectory: nil from: dir
so I look at chooseDirectory: from:
and I get:
chooseDirectory: label from: dir
        "Let the user choose a directory"
        ^self subclassResponsibility
Which doesn't help so I dig around in the docs some more and find out that
the green down arrow is clickable.
When I click it and choose MorphicUlManager>>#chooseDirectory:from:
the method definition is:
chooseDirectory: label from: dir
        "Answer the user choice of a directory."
        
        | modalMorph realLabel |
        realLabel := label ifNil: ['Choose Directory' translated].
        (ProvideAnswerNotification signal: realLabel) ifNotNil: [:answer |
                ^answer ].
        modalMorph := self modalMorph.
        ^modalMorph theme  
                chooseDirectoryIn: modalMorph
                title: realLabel
                path: (dir ifNotNil: [dir fullName])

The problem is that I cannot find a chooseDirectoryIn:title:path: method.

I wrote this all out hoping someone can tell me where I chose the wrong
rabbit hole and can point me to instructions on how to choose the correct
rabbit hole. ;-) (Also, if there is a short answer i.e. use this
object>>method, I'd appreciate that as well.)

Thanks,

Mike









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