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'From Smalltalk/X, Version:2.10.5 on 9-may-1995 at 12:01:39 pm'!
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ValueHolder subclass:#SelectionInList
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instanceVariableNames:'listHolder indexHolder'
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classVariableNames:''
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poolDictionaries:''
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category:'Interface-Support-Models'
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!
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!SelectionInList class methodsFor:'instance creation'!
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new
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^ super new initialize
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!
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with:aList
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^ self new listHolder:(ValueHolder with:aList)
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! !
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!SelectionInList methodsFor:'initialization'!
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initialize
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listHolder := ValueHolder new.
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indexHolder := ValueHolder new.
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! !
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!SelectionInList methodsFor:'accessing'!
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list
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^ listHolder value
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!
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listHolder:aValueHolder
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listHolder := aValueHolder
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!
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selectionIndex:newIndex
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indexHolder isNil ifTrue:[
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indexHolder := ValueHolder new.
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].
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indexHolder value:newIndex.
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self notifyChange:#selectionIndex.
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!
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index
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"OBSOLETE interface"
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^ self selectionIndex
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!
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selectionIndex
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^ indexHolder value
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!
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selection:anObject
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^ self selectionIndex:(self list indexOf:anObject ifAbsent:0)
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!
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selection
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|idx|
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idx := self selectionIndex.
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(idx isNil or:[idx == 0]) ifTrue:[^ nil].
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^ self list at:idx
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!
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selectionIndexHolder
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^ indexHolder
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!
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index:newIndex
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"OBSOLETE interface"
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^ self selectionIndex:newIndex
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!
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list:aCollection
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listHolder isNil ifTrue:[
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listHolder := ValueHolder new.
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].
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listHolder value:aCollection.
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indexHolder isNil ifTrue:[
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indexHolder := ValueHolder new.
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].
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indexHolder value:0.
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self notifyChange:#list.
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!
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listHolder
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^ listHolder
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!
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indexHolder
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^ indexHolder
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!
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selectionIndexHolder:aValueHolder
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indexHolder := aValueHolder
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!
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indexHolder:aValueHolder
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indexHolder := aValueHolder
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! !
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