787 lines
24 KiB
Swift
787 lines
24 KiB
Swift
//
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// MasterViewController.swift
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// NetNewsWire
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//
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// Created by Maurice Parker on 4/8/19.
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// Copyright © 2019 Ranchero Software. All rights reserved.
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//
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import UIKit
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import Account
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import Articles
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import RSCore
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import RSTree
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class MasterViewController: UITableViewController, UndoableCommandRunner {
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var undoableCommands = [UndoableCommand]()
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let nmc = NavigationModelController()
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override var canBecomeFirstResponder: Bool {
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return true
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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navigationItem.rightBarButtonItem = editButtonItem
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tableView.register(MasterTableViewSectionHeader.self, forHeaderFooterViewReuseIdentifier: "SectionHeader")
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NotificationCenter.default.addObserver(self, selector: #selector(backingStoresDidRebuild(_:)), name: .BackingStoresDidRebuild, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(unreadCountDidChange(_:)), name: .UnreadCountDidChange, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(faviconDidBecomeAvailable(_:)), name: .FaviconDidBecomeAvailable, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(feedSettingDidChange(_:)), name: .FeedSettingDidChange, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(userDidAddFeed(_:)), name: .UserDidAddFeed, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(progressDidChange(_:)), name: .AccountRefreshProgressDidChange, object: nil)
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refreshControl = UIRefreshControl()
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refreshControl!.addTarget(self, action: #selector(refreshAccounts(_:)), for: .valueChanged)
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}
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override func viewWillAppear(_ animated: Bool) {
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clearsSelectionOnViewWillAppear = splitViewController!.isCollapsed
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super.viewWillAppear(animated)
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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becomeFirstResponder()
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}
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override func viewWillDisappear(_ animated: Bool) {
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super.viewWillDisappear(animated)
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resignFirstResponder()
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}
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// MARK: Notifications
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@objc dynamic func backingStoresDidRebuild(_ notification: Notification) {
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tableView.reloadData()
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}
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@objc dynamic func progressDidChange(_ notification: Notification) {
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if AccountManager.shared.combinedRefreshProgress.isComplete {
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refreshControl?.endRefreshing()
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} else {
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refreshControl?.beginRefreshing()
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}
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}
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@objc func unreadCountDidChange(_ note: Notification) {
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guard let representedObject = note.object else {
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return
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}
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if let account = representedObject as? Account {
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if let node = nmc.treeController.rootNode.childNodeRepresentingObject(account) {
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let sectionIndex = nmc.treeController.rootNode.indexOfChild(node)!
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let headerView = tableView.headerView(forSection: sectionIndex) as! MasterTableViewSectionHeader
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headerView.unreadCount = account.unreadCount
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}
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return
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}
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configureUnreadCountForCellsForRepresentedObject(representedObject as AnyObject)
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}
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@objc func faviconDidBecomeAvailable(_ note: Notification) {
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applyToAvailableCells(configureFavicon)
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}
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@objc func feedSettingDidChange(_ note: Notification) {
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guard let feed = note.object as? Feed, let key = note.userInfo?[Feed.FeedSettingUserInfoKey] as? String else {
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return
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}
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if key == Feed.FeedSettingKey.homePageURL || key == Feed.FeedSettingKey.faviconURL {
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configureCellsForRepresentedObject(feed)
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}
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}
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@objc func userDidAddFeed(_ notification: Notification) {
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guard let feed = notification.userInfo?[UserInfoKey.feed],
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let node = nmc.treeController.rootNode.descendantNodeRepresentingObject(feed as AnyObject) else {
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return
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}
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if let indexPath = nmc.indexPathFor(node) {
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tableView.scrollToRow(at: indexPath, at: .middle, animated: true)
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return
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}
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// It wasn't already visable, so expand its folder and try again
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guard let parent = node.parent, let indexPath = nmc.indexPathFor(parent) else {
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return
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}
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expand(indexPath)
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if let indexPath = nmc.indexPathFor(node) {
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tableView.scrollToRow(at: indexPath, at: .middle, animated: true)
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}
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}
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// MARK: Table View
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override func numberOfSections(in tableView: UITableView) -> Int {
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return nmc.treeController.rootNode.numberOfChildNodes
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}
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override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
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return nmc.shadowTable[section].count
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}
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override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
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return CGFloat(integerLiteral: 44)
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}
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override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
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guard let nameProvider = nmc.treeController.rootNode.childAtIndex(section)?.representedObject as? DisplayNameProvider else {
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return nil
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}
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let headerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: "SectionHeader") as! MasterTableViewSectionHeader
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headerView.name = nameProvider.nameForDisplay
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guard let sectionNode = nmc.treeController.rootNode.childAtIndex(section) else {
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return headerView
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}
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if let account = sectionNode.representedObject as? Account {
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headerView.unreadCount = account.unreadCount
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} else {
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headerView.unreadCount = 0
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}
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headerView.tag = section
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headerView.disclosureExpanded = nmc.expandedNodes.contains(sectionNode)
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let tap = UITapGestureRecognizer(target: self, action:#selector(self.toggleSectionHeader(_:)))
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headerView.addGestureRecognizer(tap)
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return headerView
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}
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override func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
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return CGFloat.leastNormalMagnitude
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}
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override func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
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return UIView(frame: CGRect.zero)
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}
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override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
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let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! MasterTableViewCell
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guard let node = nmc.nodeFor(indexPath) else {
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return cell
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}
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configure(cell, node)
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return cell
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}
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override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
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guard let node = nmc.nodeFor(indexPath), !(node.representedObject is PseudoFeed) else {
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return false
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}
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return true
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}
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override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
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// Set up the delete action
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let deleteTitle = NSLocalizedString("Delete", comment: "Delete")
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let deleteAction = UIContextualAction(style: .normal, title: deleteTitle) { [weak self] (action, view, completionHandler) in
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self?.delete(indexPath: indexPath)
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completionHandler(true)
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}
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deleteAction.backgroundColor = UIColor.red
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// Set up the rename action
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let renameTitle = NSLocalizedString("Rename", comment: "Rename")
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let renameAction = UIContextualAction(style: .normal, title: renameTitle) { [weak self] (action, view, completionHandler) in
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self?.rename(indexPath: indexPath)
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completionHandler(true)
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}
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renameAction.backgroundColor = UIColor.gray
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return UISwipeActionsConfiguration(actions: [deleteAction, renameAction])
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}
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override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
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guard let node = nmc.nodeFor(indexPath) else {
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assertionFailure()
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return
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}
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let timeline = UIStoryboard.main.instantiateController(ofType: MasterTimelineViewController.self)
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if let fetcher = node.representedObject as? ArticleFetcher {
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nmc.timelineFetcher = fetcher
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}
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if let nameProvider = node.representedObject as? DisplayNameProvider {
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timeline.title = nameProvider.nameForDisplay
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}
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timeline.nmc = nmc
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self.navigationController?.pushViewController(timeline, animated: true)
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}
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override func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
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guard let node = nmc.nodeFor(indexPath) else {
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return false
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}
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return node.representedObject is Feed
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}
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override func tableView(_ tableView: UITableView, targetIndexPathForMoveFromRowAt sourceIndexPath: IndexPath, toProposedIndexPath proposedDestinationIndexPath: IndexPath) -> IndexPath {
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// Adjust the index path so that it will never be in the smart feeds area
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let destIndexPath: IndexPath = {
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if proposedDestinationIndexPath.section == 0 {
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return IndexPath(row: 0, section: 1)
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}
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return proposedDestinationIndexPath
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}()
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guard let draggedNode = nmc.nodeFor(sourceIndexPath), let destNode = nmc.nodeFor(destIndexPath), let parentNode = destNode.parent else {
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assertionFailure("This should never happen")
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return sourceIndexPath
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}
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// If this is a folder and isn't expanded or doesn't have any entries, let the users drop on it
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if destNode.representedObject is Folder && (destNode.numberOfChildNodes == 0 || !nmc.expandedNodes.contains(destNode)) {
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let movementAdjustment = sourceIndexPath > destIndexPath ? 1 : 0
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return IndexPath(row: destIndexPath.row + movementAdjustment, section: destIndexPath.section)
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}
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// If we are dragging around in the same container, just return the original source
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if parentNode.childNodes.contains(draggedNode) {
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return sourceIndexPath
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}
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// Suggest to the user the best place to drop the feed
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// Revisit if the tree controller can ever be sorted in some other way.
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let nodes = parentNode.childNodes + [draggedNode]
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var sortedNodes = nodes.sortedAlphabeticallyWithFoldersAtEnd()
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let index = sortedNodes.firstIndex(of: draggedNode)!
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if index == 0 {
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if parentNode.representedObject is Account {
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return IndexPath(row: 0, section: destIndexPath.section)
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} else {
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return nmc.indexPathFor(parentNode)!
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}
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} else {
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sortedNodes.remove(at: index)
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let movementAdjustment = sourceIndexPath < destIndexPath ? 1 : 0
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let adjustedIndex = index - movementAdjustment
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if adjustedIndex >= sortedNodes.count {
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let lastSortedIndexPath = nmc.indexPathFor(sortedNodes[sortedNodes.count - 1])!
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return IndexPath(row: lastSortedIndexPath.row + 1, section: lastSortedIndexPath.section)
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} else {
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return nmc.indexPathFor(sortedNodes[adjustedIndex])!
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}
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}
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}
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override func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
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guard let sourceNode = nmc.nodeFor(sourceIndexPath), let feed = sourceNode.representedObject as? Feed else {
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return
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}
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// Based on the drop we have to determine a node to start looking for a parent container.
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let destNode: Node = {
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if destinationIndexPath.row == 0 {
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return nmc.treeController.rootNode.childAtIndex(destinationIndexPath.section)!
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} else {
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let movementAdjustment = sourceIndexPath > destinationIndexPath ? 1 : 0
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let adjustedDestIndexPath = IndexPath(row: destinationIndexPath.row - movementAdjustment, section: destinationIndexPath.section)
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return nmc.nodeFor(adjustedDestIndexPath)!
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}
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}()
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// Now we start looking for the parent container
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let destParentNode: Node? = {
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if destNode.representedObject is Container {
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return destNode
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} else {
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if destNode.parent?.representedObject is Container {
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return destNode.parent!
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} else {
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return nil
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}
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}
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}()
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// Move the Feed
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let account = accountForNode(destNode)
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let sourceContainer = sourceNode.parent?.representedObject as? Container
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let destinationFolder = destParentNode?.representedObject as? Folder
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sourceContainer?.deleteFeed(feed)
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account?.addFeed(feed, to: destinationFolder)
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account?.structureDidChange()
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}
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// MARK: Actions
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@IBAction func showTools(_ sender: UIBarButtonItem) {
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let optionMenu = UIAlertController(title: nil, message: nil, preferredStyle: .actionSheet)
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// Settings Button
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let settingsTitle = NSLocalizedString("Settings", comment: "Settings")
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let setting = UIAlertAction(title: settingsTitle, style: .default) { alertAction in
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}
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optionMenu.addAction(setting)
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// Import Button
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let importOPMLTitle = NSLocalizedString("Import OPML", comment: "Import OPML")
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let importOPML = UIAlertAction(title: importOPMLTitle, style: .default) { [unowned self] alertAction in
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let docPicker = UIDocumentPickerViewController(documentTypes: ["public.xml", "org.opml.opml"], in: .import)
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docPicker.delegate = self
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docPicker.modalPresentationStyle = .formSheet
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self.present(docPicker, animated: true)
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}
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optionMenu.addAction(importOPML)
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// Export Button
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let exportOPMLTitle = NSLocalizedString("Export OPML", comment: "Export OPML")
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let exportOPML = UIAlertAction(title: exportOPMLTitle, style: .default) { [unowned self] alertAction in
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let filename = "MySubscriptions.opml"
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let tempFile = FileManager.default.temporaryDirectory.appendingPathComponent(filename)
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let opmlString = OPMLExporter.OPMLString(with: AccountManager.shared.localAccount, title: filename)
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do {
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try opmlString.write(to: tempFile, atomically: true, encoding: String.Encoding.utf8)
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} catch {
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self.presentError(title: "OPML Export Error", message: error.localizedDescription)
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}
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let docPicker = UIDocumentPickerViewController(url: tempFile, in: .exportToService)
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docPicker.modalPresentationStyle = .formSheet
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self.present(docPicker, animated: true)
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}
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optionMenu.addAction(exportOPML)
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optionMenu.addAction(UIAlertAction(title: "Cancel", style: .cancel))
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if let popoverController = optionMenu.popoverPresentationController {
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popoverController.barButtonItem = sender
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}
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self.present(optionMenu, animated: true)
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}
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@IBAction func markAllAsRead(_ sender: Any) {
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let title = NSLocalizedString("Mark All Read", comment: "Mark All Read")
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let message = NSLocalizedString("Mark all articles in all accounts as read?", comment: "Mark all articles")
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let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)
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let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
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let cancelAction = UIAlertAction(title: cancelTitle, style: .cancel)
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alertController.addAction(cancelAction)
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let markTitle = NSLocalizedString("Mark All Read", comment: "Mark All Read")
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let markAction = UIAlertAction(title: markTitle, style: .default) { [weak self] (action) in
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let accounts = AccountManager.shared.accounts
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var articles = Set<Article>()
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accounts.forEach { account in
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articles.formUnion(account.fetchUnreadArticles())
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}
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guard let undoManager = self?.undoManager,
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let markReadCommand = MarkStatusCommand(initialArticles: Array(articles), markingRead: true, undoManager: undoManager) else {
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return
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}
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self?.runCommand(markReadCommand)
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}
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alertController.addAction(markAction)
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present(alertController, animated: true)
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}
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@IBAction func add(_ sender: UIBarButtonItem) {
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let feedViewController = UIStoryboard.add.instantiateInitialViewController()!
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feedViewController.modalPresentationStyle = .popover
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feedViewController.popoverPresentationController?.barButtonItem = sender
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self.present(feedViewController, animated: true)
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}
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@objc func toggleSectionHeader(_ sender: UITapGestureRecognizer) {
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guard let sectionIndex = sender.view?.tag,
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let sectionNode = nmc.treeController.rootNode.childAtIndex(sectionIndex),
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let headerView = sender.view as? MasterTableViewSectionHeader
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else {
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return
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}
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if nmc.expandedNodes.contains(sectionNode) {
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headerView.disclosureExpanded = false
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collapse(section: sectionIndex)
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} else {
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headerView.disclosureExpanded = true
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expand(section: sectionIndex)
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}
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}
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// MARK: API
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func configure(_ cell: MasterTableViewCell, _ node: Node) {
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cell.delegate = self
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if node.parent?.representedObject is Folder {
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cell.indentationLevel = 1
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} else {
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cell.indentationLevel = 0
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}
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cell.disclosureExpanded = nmc.expandedNodes.contains(node)
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cell.allowDisclosureSelection = node.canHaveChildNodes
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cell.name = nameFor(node)
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configureUnreadCount(cell, node)
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configureFavicon(cell, node)
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cell.shouldShowImage = node.representedObject is SmallIconProvider
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}
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func configureUnreadCount(_ cell: MasterTableViewCell, _ node: Node) {
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cell.unreadCount = unreadCountFor(node)
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}
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func configureFavicon(_ cell: MasterTableViewCell, _ node: Node) {
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cell.faviconImage = imageFor(node)
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}
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func imageFor(_ node: Node) -> UIImage? {
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if let smallIconProvider = node.representedObject as? SmallIconProvider {
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return smallIconProvider.smallIcon
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}
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return nil
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}
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func nameFor(_ node: Node) -> String {
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if let displayNameProvider = node.representedObject as? DisplayNameProvider {
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return displayNameProvider.nameForDisplay
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}
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return ""
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}
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func unreadCountFor(_ node: Node) -> Int {
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if let unreadCountProvider = node.representedObject as? UnreadCountProvider {
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return unreadCountProvider.unreadCount
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}
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return 0
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}
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func delete(indexPath: IndexPath) {
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guard let undoManager = undoManager,
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let deleteNode = nmc.nodeFor(indexPath),
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let deleteCommand = DeleteCommand(nodesToDelete: [deleteNode], treeController: nmc.treeController, undoManager: undoManager)
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else {
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return
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}
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nmc.animatingChanges = true
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runCommand(deleteCommand)
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nmc.rebuildShadowTable()
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tableView.deleteRows(at: [indexPath], with: .automatic)
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|
nmc.animatingChanges = false
|
|
|
|
}
|
|
|
|
func rename(indexPath: IndexPath) {
|
|
|
|
let name = (nmc.nodeFor(indexPath)?.representedObject as? DisplayNameProvider)?.nameForDisplay ?? ""
|
|
let formatString = NSLocalizedString("Rename “%@”", comment: "Feed finder")
|
|
let title = NSString.localizedStringWithFormat(formatString as NSString, name) as String
|
|
|
|
let alertController = UIAlertController(title: title, message: nil, preferredStyle: .alert)
|
|
|
|
let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
|
|
alertController.addAction(UIAlertAction(title: cancelTitle, style: .cancel))
|
|
|
|
let renameTitle = NSLocalizedString("Rename", comment: "Rename")
|
|
let renameAction = UIAlertAction(title: renameTitle, style: .default) { [weak self] action in
|
|
|
|
guard let node = self?.nmc.nodeFor(indexPath),
|
|
let name = alertController.textFields?[0].text,
|
|
!name.isEmpty else {
|
|
return
|
|
}
|
|
|
|
if let feed = node.representedObject as? Feed {
|
|
feed.editedName = name
|
|
} else if let folder = node.representedObject as? Folder {
|
|
folder.name = name
|
|
}
|
|
|
|
}
|
|
|
|
alertController.addAction(renameAction)
|
|
|
|
alertController.addTextField() { textField in
|
|
textField.placeholder = NSLocalizedString("Name", comment: "Name")
|
|
}
|
|
|
|
self.present(alertController, animated: true) {
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// MARK: OPML Document Picker
|
|
|
|
extension MasterViewController: UIDocumentPickerDelegate {
|
|
|
|
func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
|
|
|
|
for url in urls {
|
|
do {
|
|
try OPMLImporter.parseAndImport(fileURL: url, account: AccountManager.shared.localAccount)
|
|
} catch {
|
|
presentError(title: "OPML Import Error", message: error.localizedDescription)
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// MARK: MasterTableViewCellDelegate
|
|
|
|
extension MasterViewController: MasterTableViewCellDelegate {
|
|
|
|
func disclosureSelected(_ sender: MasterTableViewCell, expanding: Bool) {
|
|
if expanding {
|
|
expand(sender)
|
|
} else {
|
|
collapse(sender)
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// MARK: Private
|
|
|
|
private extension MasterViewController {
|
|
|
|
@objc private func refreshAccounts(_ sender: Any) {
|
|
AccountManager.shared.refreshAll()
|
|
}
|
|
|
|
func configureCellsForRepresentedObject(_ representedObject: AnyObject) {
|
|
|
|
applyToCellsForRepresentedObject(representedObject, configure)
|
|
}
|
|
|
|
func configureUnreadCountForCellsForRepresentedObject(_ representedObject: AnyObject) {
|
|
applyToCellsForRepresentedObject(representedObject, configureUnreadCount)
|
|
}
|
|
|
|
func applyToCellsForRepresentedObject(_ representedObject: AnyObject, _ callback: (MasterTableViewCell, Node) -> Void) {
|
|
applyToAvailableCells { (cell, node) in
|
|
if node.representedObject === representedObject {
|
|
callback(cell, node)
|
|
}
|
|
}
|
|
}
|
|
|
|
func applyToAvailableCells(_ callback: (MasterTableViewCell, Node) -> Void) {
|
|
tableView.visibleCells.forEach { cell in
|
|
guard let indexPath = tableView.indexPath(for: cell), let node = nmc.nodeFor(indexPath) else {
|
|
return
|
|
}
|
|
callback(cell as! MasterTableViewCell, node)
|
|
}
|
|
}
|
|
|
|
private func accountForNode(_ node: Node) -> Account? {
|
|
if let account = node.representedObject as? Account {
|
|
return account
|
|
}
|
|
if let folder = node.representedObject as? Folder {
|
|
return folder.account
|
|
}
|
|
if let feed = node.representedObject as? Feed {
|
|
return feed.account
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func expand(section: Int) {
|
|
|
|
guard let expandNode = nmc.treeController.rootNode.childAtIndex(section) else {
|
|
return
|
|
}
|
|
nmc.expandedNodes.append(expandNode)
|
|
|
|
nmc.animatingChanges = true
|
|
|
|
var indexPathsToInsert = [IndexPath]()
|
|
var i = 0
|
|
|
|
func addNode(_ node: Node) {
|
|
indexPathsToInsert.append(IndexPath(row: i, section: section))
|
|
nmc.shadowTable[section].insert(node, at: i)
|
|
i = i + 1
|
|
}
|
|
|
|
for child in expandNode.childNodes {
|
|
addNode(child)
|
|
if nmc.expandedNodes.contains(child) {
|
|
for gChild in child.childNodes {
|
|
addNode(gChild)
|
|
}
|
|
}
|
|
}
|
|
|
|
tableView.beginUpdates()
|
|
tableView.insertRows(at: indexPathsToInsert, with: .automatic)
|
|
tableView.endUpdates()
|
|
|
|
nmc.animatingChanges = false
|
|
|
|
}
|
|
|
|
func expand(_ cell: MasterTableViewCell) {
|
|
guard let indexPath = tableView.indexPath(for: cell) else {
|
|
return
|
|
}
|
|
expand(indexPath)
|
|
}
|
|
|
|
func expand(_ indexPath: IndexPath) {
|
|
|
|
let expandNode = nmc.shadowTable[indexPath.section][indexPath.row]
|
|
nmc.expandedNodes.append(expandNode)
|
|
|
|
nmc.animatingChanges = true
|
|
|
|
var indexPathsToInsert = [IndexPath]()
|
|
for i in 0..<expandNode.childNodes.count {
|
|
if let child = expandNode.childAtIndex(i) {
|
|
let nextIndex = indexPath.row + i + 1
|
|
indexPathsToInsert.append(IndexPath(row: nextIndex, section: indexPath.section))
|
|
nmc.shadowTable[indexPath.section].insert(child, at: nextIndex)
|
|
}
|
|
}
|
|
|
|
tableView.beginUpdates()
|
|
tableView.insertRows(at: indexPathsToInsert, with: .automatic)
|
|
tableView.endUpdates()
|
|
|
|
nmc.animatingChanges = false
|
|
|
|
}
|
|
|
|
func collapse(section: Int) {
|
|
|
|
nmc.animatingChanges = true
|
|
|
|
guard let collapseNode = nmc.treeController.rootNode.childAtIndex(section) else {
|
|
return
|
|
}
|
|
|
|
if let removeNode = nmc.expandedNodes.firstIndex(of: collapseNode) {
|
|
nmc.expandedNodes.remove(at: removeNode)
|
|
}
|
|
|
|
var indexPathsToRemove = [IndexPath]()
|
|
for i in 0..<nmc.shadowTable[section].count {
|
|
indexPathsToRemove.append(IndexPath(row: i, section: section))
|
|
}
|
|
nmc.shadowTable[section] = [Node]()
|
|
|
|
tableView.beginUpdates()
|
|
tableView.deleteRows(at: indexPathsToRemove, with: .automatic)
|
|
tableView.endUpdates()
|
|
|
|
nmc.animatingChanges = false
|
|
|
|
}
|
|
|
|
func collapse(_ cell: MasterTableViewCell) {
|
|
guard let indexPath = tableView.indexPath(for: cell) else {
|
|
return
|
|
}
|
|
collapse(indexPath)
|
|
}
|
|
|
|
func collapse(_ indexPath: IndexPath) {
|
|
|
|
nmc.animatingChanges = true
|
|
|
|
let collapseNode = nmc.shadowTable[indexPath.section][indexPath.row]
|
|
if let removeNode = nmc.expandedNodes.firstIndex(of: collapseNode) {
|
|
nmc.expandedNodes.remove(at: removeNode)
|
|
}
|
|
|
|
var indexPathsToRemove = [IndexPath]()
|
|
|
|
for child in collapseNode.childNodes {
|
|
if let index = nmc.shadowTable[indexPath.section].firstIndex(of: child) {
|
|
indexPathsToRemove.append(IndexPath(row: index, section: indexPath.section))
|
|
}
|
|
}
|
|
|
|
for child in collapseNode.childNodes {
|
|
if let index = nmc.shadowTable[indexPath.section].firstIndex(of: child) {
|
|
nmc.shadowTable[indexPath.section].remove(at: index)
|
|
}
|
|
}
|
|
|
|
tableView.beginUpdates()
|
|
tableView.deleteRows(at: indexPathsToRemove, with: .automatic)
|
|
tableView.endUpdates()
|
|
|
|
nmc.animatingChanges = false
|
|
|
|
}
|
|
|
|
}
|