88 lines
2.1 KiB
Smalltalk
88 lines
2.1 KiB
Smalltalk
"
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Branch node. this kind of node has no content
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"
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Class {
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#name : #GrafoscopioBranchNode,
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#superclass : #GrafoscopioLeafNode,
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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 : #'instance creation' }
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GrafoscopioBranchNode class >> isLeaf [
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^ false
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]
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{ #category : #accessing }
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GrafoscopioBranchNode >> acceptVisitor: aGrafoscopioVisitor [
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aGrafoscopioVisitor visitBranchNode: self.
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]
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{ #category : #accessing }
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GrafoscopioBranchNode >> acceptsChildsOfClass: aClass [
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^ {GrafoscopioBranchNode.
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GrafoscopioUnitNode} includes: aClass
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]
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{ #category : #accessing }
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GrafoscopioBranchNode >> addAtBeginningChild: aBlock ofClass: aClass [
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(self acceptsChildsOfClass: aClass)
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ifTrue: [| child |
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child := aBlock value.
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child parent: self.
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self children addFirst: child]
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]
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{ #category : #accessing }
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GrafoscopioBranchNode >> addChild: aBlock ofClass: aClass [
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(self acceptsChildsOfClass: aClass)
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ifTrue: [ | child |
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child := aBlock value.
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child parent: self.
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self children add: child ]
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]
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{ #category : #accessing }
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GrafoscopioBranchNode >> 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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GrafoscopioBranchNode >> 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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GrafoscopioBranchNode >> isLeaf [
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^ false
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]
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{ #category : #'as yet unclassified' }
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GrafoscopioBranchNode >> 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.
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children swap: index with: (index + 1 min: children size)
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]
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{ #category : #'as yet unclassified' }
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GrafoscopioBranchNode >> 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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{ #category : #'as yet unclassified' }
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GrafoscopioBranchNode >> remove: aGrafoscopioTextNode [
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children remove: aGrafoscopioTextNode
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]
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