Class ChildSet

packages/core/src/language/childset.ts:15–263

}

export class ChildSet {
  childParentRef: ParentReference
  children: SplootNode[]
  type: ChildSetType
  minChildren: number
  maxChildren: number
  nodeCategory: NodeCategory
  mutationObservers: ChildSetObserver[]
  enableMutations: boolean

  constructor(
    owner: SplootNode,
    childSetId: string,
    type: ChildSetType,
    nodeCategory: NodeCategory,
    minChildren: number,
    maxChildren: number
  ) {
    this.children = []
    this.childParentRef = new ParentReference(owner, childSetId)
    this.type = type
    this.minChildren = minChildren
    if (this.type === ChildSetType.Single) {
      this.maxChildren = 1
    } else if (this.type === ChildSetType.Immutable) {
      this.maxChildren = minChildren
    } else {
      this.maxChildren = maxChildren
    }

    this.nodeCategory = nodeCategory
    this.mutationObservers = []
    this.enableMutations = false
  }

  getParentRef() {
    return this.childParentRef
  }

  getChildren() {
    return this.children
  }

  getNodeCategory() {
    return this.nodeCategory
  }

  fireMutation(mutation: ChildSetMutation) {
    this.mutationObservers.forEach((observer: ChildSetObserver) => {
      observer.handleChildSetMutation(mutation)
    })
    globalMutationDispatcher.handleChildSetMutation(mutation)
  }

  registerObserver(observer: ChildSetObserver) {
    this.mutationObservers.push(observer)
  }