51 lines
1.2 KiB
Smalltalk
51 lines
1.2 KiB
Smalltalk
Class {
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#name : #GrafoscopioTrunkNode,
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#superclass : #GrafoscopioAbstractNode,
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#instVars : [
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'children'
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],
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#category : 'Grafoscopio-Model'
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}
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{ #category : #testing }
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GrafoscopioTrunkNode class >> isAbstract [
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^ self = GrafoscopioTrunkNode
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]
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{ #category : #accessing }
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GrafoscopioTrunkNode >> children [
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"Returns the receivers list of children"
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^ children ifNil: [ children := OrderedCollection new ]
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]
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{ #category : #accessing }
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GrafoscopioTrunkNode >> children: aCollection [
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"Sets the receivers children"
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aCollection do: [:currentNode | currentNode parent: self ].
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children := aCollection.
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]
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{ #category : #accessing }
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GrafoscopioTrunkNode >> isLeaf [
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^ false
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]
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{ #category : #movement }
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GrafoscopioTrunkNode >> moveDown: aNode [
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| index |
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"Moves the current node a place before in the children collection where is located"
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index := (children indexOf: aNode) max: 1 .
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children swap: index with: (index + 1 min: children size)
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]
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{ #category : #movement }
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GrafoscopioTrunkNode >> moveUp: aNode [
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| index |
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"Moves the current node a place before in the children collection where is located"
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index := children indexOf: aNode.
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children swap: index with: (index - 1 max: 1)
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]
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