Scratch

I have worked for a while and finally the elusive show/hide list blocks are in my possession!
Here's what ya gotta do:

Important Note:
GirWaffles64 discovered that this will only work on a Mac if the indentations are deleted.

#0: Turn fill screen off and open a browser
Open Scratch and hold shift while clicking the loop of the 'R' in the Scratch logo (the one in the top-right corner). Select 'turn fill screen off', then click in the whitespace that comes up. Select 'open...', then 'browser'.
#1: Add the showOrHideList:show: Method
Select the path 'Scratch-Objects/ScriptableScratchMorph/list ops' and copy/paste the following into the bottom panel: (Note: use Alt + V to paste in Squeak)

showOrHideList: t1 show: t2
    | t3 t4 t5 |
    (self listVarNames includes: t1)
        ifFalse: [^ self].
    t3 _ lists at: t1.
    t2
        ifTrue: [(t4 _ self ownerThatIsA: ScratchStageMorph) ifNotNil: [t4 addMorph: t3]]
        ifFalse: [t3 delete].
    (t5 _ self ownerThatIsA: ScratchFrameMorph) ifNil: [^ self].
    t5 viewerPane categoryChanged: 'variables'

Press Alt + S to save it.
#2: Add the showList: and hideList: Methods
Click 'list ops' again and paste the following into the bottom panel:

showList: t1
    | t2 |
    self showOrHideList: t1 show: true.
    t2 _ self ownerThatIsA: ScratchStageMorph.
    t2 ~= self ifTrue: [t2 showOrHideList: t1 show: true]

Press Alt + S to save it, then click 'list ops' a third time and paste the following into the bottom panel:

hideList: t1
    | t2 |
    self showOrHideList: t1 show: false.
    t2 _ self ownerThatIsA: ScratchStageMorph.
    t2 ~= self ifTrue: [t2 showOrHideList: t1 show: false]

Press Alt + S.
#3: Add the correct blockSpecs
Click the 'class' button under the second-from-the-left panel and select 'block specs/blockSpecs'. Paste the following before the last two parenthesis:

('show list %L' #- #showList:) ('hide list %L' #- #hideList:)

Press Alt + S and save the image (using the shift-click menu) in end-user mode.
Next time you navigate to the variable blocks page, two shiny new blocks will be there!

NOTE: I have found that the argument will not (by default) show the first list. If I find a way to fix this problem, I will post an update here.

Scratch On!

Last edited by nXIII (2010-03-25 20:27:15)