645 lines
19 KiB
Swift
645 lines
19 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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var animatingChanges = false
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var expandedNodes = [Node]()
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var shadowTable = [[Node]]()
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let treeControllerDelegate = FeedTreeControllerDelegate()
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lazy var treeController: TreeController = {
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return TreeController(delegate: treeControllerDelegate)
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}()
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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(unreadCountDidChange(_:)), name: .UnreadCountDidChange, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(containerChildrenDidChange(_:)), name: .ChildrenDidChange, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(batchUpdateDidPerform(_:)), name: .BatchUpdateDidPerform, 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(displayNameDidChange(_:)), name: .DisplayNameDidChange, 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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// Set up the backing structures
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for _ in treeController.rootNode.childNodes {
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shadowTable.append([Node]())
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}
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rebuildShadowTable()
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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 private func refreshAccounts(_ sender: Any) {
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AccountManager.shared.refreshAll()
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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 containerChildrenDidChange(_ note: Notification) {
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rebuildBackingStoresAndReloadDataIfNeeded()
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}
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@objc func batchUpdateDidPerform(_ notification: Notification) {
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rebuildBackingStoresAndReloadDataIfNeeded()
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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 = treeController.rootNode.childNodeRepresentingObject(account) {
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let sectionIndex = 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 displayNameDidChange(_ note: Notification) {
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guard let object = note.object else {
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return
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}
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rebuildBackingStoresAndReloadDataIfNeeded()
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configureCellsForRepresentedObject(object as AnyObject)
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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 = treeController.rootNode.descendantNodeRepresentingObject(feed as AnyObject) else {
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return
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}
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if let indexPath = 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 = 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 = 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 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 shadowTable[section].count
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}
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override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
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guard let nameProvider = 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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if let account = treeController.rootNode.childAtIndex(section)?.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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return headerView
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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 = 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 = 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 = 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 pseudoFeed = node.representedObject as? PseudoFeed {
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timeline.title = pseudoFeed.nameForDisplay
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timeline.representedObjects = [pseudoFeed]
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}
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if let folder = node.representedObject as? Folder {
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timeline.title = folder.nameForDisplay
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timeline.representedObjects = [folder]
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}
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if let feed = node.representedObject as? Feed {
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timeline.title = feed.nameForDisplay
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timeline.representedObjects = [feed]
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}
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self.navigationController?.pushViewController(timeline, animated: true)
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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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// MARK: API
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func configure(_ cell: MasterTableViewCell, _ node: Node) {
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cell.delegate = self
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cell.indent = node.parent?.representedObject is Folder
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cell.disclosureExpanded = 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 = nodeFor(indexPath),
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let deleteCommand = DeleteCommand(nodesToDelete: [deleteNode], treeController: treeController, undoManager: undoManager)
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else {
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return
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}
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animatingChanges = true
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runCommand(deleteCommand)
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rebuildShadowTable()
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tableView.deleteRows(at: [indexPath], with: .automatic)
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animatingChanges = false
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}
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func rename(indexPath: IndexPath) {
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let name = (nodeFor(indexPath)?.representedObject as? DisplayNameProvider)?.nameForDisplay ?? ""
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let formatString = NSLocalizedString("Rename “%@”", comment: "Feed finder")
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let title = NSString.localizedStringWithFormat(formatString as NSString, name) as String
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let alertController = UIAlertController(title: title, message: nil, preferredStyle: .alert)
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let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
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alertController.addAction(UIAlertAction(title: cancelTitle, style: .cancel))
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let renameTitle = NSLocalizedString("Rename", comment: "Rename")
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let renameAction = UIAlertAction(title: renameTitle, style: .default) { [weak self] action in
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guard let node = self?.nodeFor(indexPath),
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let name = alertController.textFields?[0].text,
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!name.isEmpty else {
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return
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}
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if let feed = node.representedObject as? Feed {
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feed.editedName = name
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} else if let folder = node.representedObject as? Folder {
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folder.name = name
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}
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}
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alertController.addAction(renameAction)
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alertController.addTextField() { textField in
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textField.placeholder = NSLocalizedString("Name", comment: "Name")
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}
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self.present(alertController, animated: true) {
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}
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}
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func nodeFor(_ indexPath: IndexPath) -> Node? {
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return shadowTable[indexPath.section][indexPath.row]
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}
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func indexPathFor(_ node: Node) -> IndexPath? {
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for i in 0..<shadowTable.count {
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if let row = shadowTable[i].firstIndex(of: node) {
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return IndexPath(row: row, section: i)
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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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// MARK: OPML Document Picker
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extension MasterViewController: UIDocumentPickerDelegate {
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func documentPicker(_ controller: UIDocumentPickerViewController, didPickDocumentsAt urls: [URL]) {
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for url in urls {
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do {
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try OPMLImporter.parseAndImport(fileURL: url, account: AccountManager.shared.localAccount)
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} catch {
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presentError(title: "OPML Import Error", message: error.localizedDescription)
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}
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}
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}
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}
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// MARK: MasterTableViewCellDelegate
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extension MasterViewController: MasterTableViewCellDelegate {
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func disclosureSelected(_ sender: MasterTableViewCell, expanding: Bool) {
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if expanding {
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expand(sender)
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} else {
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collapse(sender)
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}
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}
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}
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// MARK: Private
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private extension MasterViewController {
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func rebuildBackingStoresAndReloadDataIfNeeded() {
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if !animatingChanges && !BatchUpdate.shared.isPerforming {
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treeController.rebuild()
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rebuildShadowTable()
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tableView.reloadData()
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}
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}
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func configureCellsForRepresentedObject(_ representedObject: AnyObject) {
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applyToCellsForRepresentedObject(representedObject, configure)
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}
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func configureUnreadCountForCellsForRepresentedObject(_ representedObject: AnyObject) {
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applyToCellsForRepresentedObject(representedObject, configureUnreadCount)
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}
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func applyToCellsForRepresentedObject(_ representedObject: AnyObject, _ callback: (MasterTableViewCell, Node) -> Void) {
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applyToAvailableCells { (cell, node) in
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if node.representedObject === representedObject {
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callback(cell, node)
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}
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}
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}
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func applyToAvailableCells(_ callback: (MasterTableViewCell, Node) -> Void) {
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tableView.visibleCells.forEach { cell in
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guard let indexPath = tableView.indexPath(for: cell), let node = nodeFor(indexPath) else {
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return
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}
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callback(cell as! MasterTableViewCell, node)
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}
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}
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func rebuildShadowTable() {
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for i in 0..<treeController.rootNode.numberOfChildNodes {
|
|
|
|
var result = [Node]()
|
|
|
|
if let nodes = treeController.rootNode.childAtIndex(i)?.childNodes {
|
|
for node in nodes {
|
|
result.append(node)
|
|
if expandedNodes.contains(node) {
|
|
for child in node.childNodes {
|
|
result.append(child)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
shadowTable[i] = result
|
|
|
|
}
|
|
|
|
}
|
|
|
|
func expand(_ cell: MasterTableViewCell) {
|
|
guard let indexPath = tableView.indexPath(for: cell) else {
|
|
return
|
|
}
|
|
expand(indexPath)
|
|
}
|
|
|
|
func expand(_ indexPath: IndexPath) {
|
|
|
|
animatingChanges = true
|
|
|
|
let expandNode = shadowTable[indexPath.section][indexPath.row]
|
|
expandedNodes.append(expandNode)
|
|
|
|
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))
|
|
shadowTable[indexPath.section].insert(child, at: nextIndex)
|
|
}
|
|
}
|
|
|
|
tableView.beginUpdates()
|
|
tableView.insertRows(at: indexPathsToInsert, with: .automatic)
|
|
tableView.endUpdates()
|
|
|
|
animatingChanges = false
|
|
|
|
}
|
|
|
|
func collapse(_ cell: MasterTableViewCell) {
|
|
guard let indexPath = tableView.indexPath(for: cell) else {
|
|
return
|
|
}
|
|
collapse(indexPath)
|
|
}
|
|
|
|
func collapse(_ indexPath: IndexPath) {
|
|
|
|
animatingChanges = true
|
|
|
|
let collapseNode = shadowTable[indexPath.section][indexPath.row]
|
|
if let removeNode = expandedNodes.firstIndex(of: collapseNode) {
|
|
expandedNodes.remove(at: removeNode)
|
|
}
|
|
|
|
var indexPathsToRemove = [IndexPath]()
|
|
|
|
for child in collapseNode.childNodes {
|
|
if let index = shadowTable[indexPath.section].firstIndex(of: child) {
|
|
indexPathsToRemove.append(IndexPath(row: index, section: indexPath.section))
|
|
}
|
|
}
|
|
|
|
for child in collapseNode.childNodes {
|
|
if let index = shadowTable[indexPath.section].firstIndex(of: child) {
|
|
shadowTable[indexPath.section].remove(at: index)
|
|
}
|
|
}
|
|
|
|
tableView.beginUpdates()
|
|
tableView.deleteRows(at: indexPathsToRemove, with: .automatic)
|
|
tableView.endUpdates()
|
|
|
|
animatingChanges = false
|
|
|
|
}
|
|
|
|
}
|