I am trying to redo NetModel so that it will work under Jacaranda. 
Unfortunately there is a small snag.  There is a menu that does global
things to the model that I can't figure out how to do.

There are a number of class methods in NetModel that do things for all
instances of that class in the current world.  I have changed these to
refer to owner rather than world, and that seems to work for the most
part.  But there is one menu that is a problem.  Here is a shortened
version of the method:

doModelMenu

	| aMenu answer thisWorld |
	thisWorld := (self owner).	"make a pretty simple assumption about the
world"
	aMenu := SelectionMenu 
		labelList: #( 'Evaluate the model' 
			'Report on all circuits'
			'Label all circuits with externalName'
			'Unlabel all circuits'
			'Erase the whole network' )
		lines: #( 1 )  "optional"
		selections: #( 'self evaluateModel. NetCircuit reportAllUtilinWorld:
thisWorld'
			'NetReport new initialize: #listCircuits'
			'NetCircuit allBeLabeled: #externalName inWorld: thisWorld'
			'NetCircuit allRemoveAllLabelsinWorld: thisWorld'
			'self eraseNetworkinWorld: thisWorld' ).
	answer := aMenu startUpWithCaption: 'Pick One'.
	Utilities evaluate: answer in: self to: nil.



The "Utilities evaluate:" fails because when the answer string is
evaluated, it has no clue of the instance variables or methods of the
object that is responding to this "doModelMenu" method.  I think that
there are probably other things wrong with the way that this is put
together, like the way that I am trying to pass "thisWorld" to the
evaluated phrases.  This all worked fine when I could just assume it
was in THE World instead of trying to specify what world things are in.

Any idea how I can straighten this out???


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