135 lines
3.3 KiB
Swift
135 lines
3.3 KiB
Swift
//
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// SidebarTreeControllerDelegate.swift
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// NetNewsWire
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//
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// Created by Brent Simmons on 7/24/16.
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// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import RSTree
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import Articles
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import Account
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final class FeedTreeControllerDelegate: TreeControllerDelegate {
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func treeController(treeController: TreeController, childNodesFor node: Node) -> [Node]? {
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if node.isRoot {
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return childNodesForRootNode(node)
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}
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if node.representedObject is Container {
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return childNodesForContainerNode(node)
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}
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if node.representedObject is SmartFeedsController {
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return childNodesForSmartFeeds(node)
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}
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return nil
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}
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}
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private extension FeedTreeControllerDelegate {
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func childNodesForRootNode(_ rootNode: Node) -> [Node]? {
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// The top-level nodes are Smart Feeds and accounts.
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let smartFeedsNode = rootNode.existingOrNewChildNode(with: SmartFeedsController.shared)
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smartFeedsNode.canHaveChildNodes = true
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smartFeedsNode.isGroupItem = true
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return [smartFeedsNode] + sortedAccountNodes(rootNode)
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}
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func childNodesForSmartFeeds(_ parentNode: Node) -> [Node] {
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return SmartFeedsController.shared.smartFeeds.map { parentNode.existingOrNewChildNode(with: $0) }
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}
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func childNodesForContainerNode(_ containerNode: Node) -> [Node]? {
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let container = containerNode.representedObject as! Container
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var children = [AnyObject]()
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children.append(contentsOf: Array(container.topLevelFeeds))
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if let folders = container.folders {
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children.append(contentsOf: Array(folders))
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}
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var updatedChildNodes = [Node]()
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children.forEach { (representedObject) in
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if let existingNode = containerNode.childNodeRepresentingObject(representedObject) {
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if !updatedChildNodes.contains(existingNode) {
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updatedChildNodes += [existingNode]
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return
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}
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}
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if let newNode = self.createNode(representedObject: representedObject, parent: containerNode) {
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updatedChildNodes += [newNode]
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}
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}
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return updatedChildNodes.sortedAlphabeticallyWithFoldersAtEnd()
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}
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func createNode(representedObject: Any, parent: Node) -> Node? {
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if let feed = representedObject as? Feed {
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return createNode(feed: feed, parent: parent)
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}
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if let folder = representedObject as? Folder {
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return createNode(folder: folder, parent: parent)
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}
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if let account = representedObject as? Account {
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return createNode(account: account, parent: parent)
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}
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return nil
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}
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func createNode(feed: Feed, parent: Node) -> Node {
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return parent.createChildNode(feed)
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}
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func createNode(folder: Folder, parent: Node) -> Node {
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let node = parent.createChildNode(folder)
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node.canHaveChildNodes = true
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return node
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}
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func createNode(account: Account, parent: Node) -> Node {
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let node = parent.createChildNode(account)
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node.canHaveChildNodes = true
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node.isGroupItem = true
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return node
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}
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func sortedAccountNodes(_ parent: Node) -> [Node] {
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let nodes = AccountManager.shared.sortedActiveAccounts.map { (account) -> Node in
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let accountNode = parent.existingOrNewChildNode(with: account)
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accountNode.canHaveChildNodes = true
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accountNode.isGroupItem = true
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return accountNode
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}
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return nodes
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}
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func nodeInArrayRepresentingObject(_ nodes: [Node], _ representedObject: AnyObject) -> Node? {
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for oneNode in nodes {
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if oneNode.representedObject === representedObject {
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return oneNode
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}
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}
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return nil
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}
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}
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