David T. Lewis uploaded a new version of Collections to project The Trunk:
http://source.squeak.org/trunk/Collections-dtl.301.mcz

==================== Summary ====================

Name: Collections-dtl.301
Author: dtl
Time: 10 February 2010, 5:56:20.834 pm
UUID: 30d34096-9644-48ed-acae-ae17e9a1fd47
Ancestors: Collections-dtl.300

Change TranscriptStream>>closeAllViews to use #changed: #update: rather than traverse dependents. Removes MVC/Morphic dependency.
Change TranscriptStream>>countOpenTranscripts to select on #isTextView rather than testing #isKindOf: on MVC and Morphic view.

=============== Diff against Collections-dtl.300 ===============

Item was changed:
  ----- Method: TranscriptStream>>closeAllViews (in category 'initialization') -----
  closeAllViews
  	"Transcript closeAllViews"
  
+ 	self changed: #close
+ !
- 	self dependents do: 
- 			[:d | 
- 			(d isKindOf: PluggableTextView) 
- 				ifTrue: [d topView controller closeAndUnscheduleNoTerminate].
- 			(d isSystemWindow) ifTrue: [d delete]]!

Item was changed:
  ----- Method: TranscriptStream>>countOpenTranscripts (in category 'private') -----
  countOpenTranscripts
+ 	"Transcript countOpenTranscripts"
+ 
+ 	^ (self dependents select: [:e | e isTextView]) size
+ !
- 		
- 	| openCount |
- 	openCount := 0.
- 	self dependents do:
- 		[:d | ((d isKindOf: PluggableTextView) or:
- 			[d isKindOf: PluggableTextMorph]) ifTrue: [openCount := openCount + 1]].
- 	^ openCount!