NetNewsWire/Mac/MainWindow/AddFeed/FolderTreeControllerDelegat...

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//
// FolderTreeControllerDelegate.swift
// NetNewsWire
//
// Created by Brent Simmons on 8/10/16.
// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
import RSTree
import Articles
import Account
final class FolderTreeControllerDelegate: TreeControllerDelegate {
func treeController(treeController: TreeController, childNodesFor node: Node) -> [Node]? {
return node.isRoot ? childNodesForRootNode(node) : nil
}
}
private extension FolderTreeControllerDelegate {
func childNodesForRootNode(_ node: Node) -> [Node]? {
// Root node is Top Level and children are folders. Folders cant have subfolders.
// This will have to be revised later.
guard let folders = AccountManager.shared.localAccount.folders else {
return nil
}
let folderNodes = folders.map { createNode($0, parent: node) }
return folderNodes.sortedAlphabetically()
}
func createNode(_ folder: Folder, parent: Node) -> Node {
let node = Node(representedObject: folder, parent: parent)
node.canHaveChildNodes = false
return node
}
}