NetNewsWire/iOS/MasterFeed/MasterFeedViewController.swift

1283 lines
44 KiB
Swift

//
// MasterViewController.swift
// NetNewsWire
//
// Created by Maurice Parker on 4/8/19.
// Copyright © 2019 Ranchero Software. All rights reserved.
//
import UIKit
import Account
import Articles
import RSCore
import RSTree
import SafariServices
class MasterFeedViewController: UITableViewController, UndoableCommandRunner {
@IBOutlet weak var filterButton: UIBarButtonItem!
private var refreshProgressView: RefreshProgressView?
@IBOutlet weak var addNewItemButton: UIBarButtonItem!
private let operationQueue = MainThreadOperationQueue()
lazy var dataSource = makeDataSource()
var undoableCommands = [UndoableCommand]()
weak var coordinator: SceneCoordinator!
private let keyboardManager = KeyboardManager(type: .sidebar)
override var keyCommands: [UIKeyCommand]? {
return keyboardManager.keyCommands
}
override var canBecomeFirstResponder: Bool {
return true
}
override func viewDidLoad() {
super.viewDidLoad()
if traitCollection.userInterfaceIdiom == .phone {
navigationController?.navigationBar.prefersLargeTitles = true
}
// If you don't have an empty table header, UIKit tries to help out by putting one in for you
// that makes a gap between the first section header and the navigation bar
var frame = CGRect.zero
frame.size.height = .leastNormalMagnitude
tableView.tableHeaderView = UIView(frame: frame)
tableView.register(MasterFeedTableViewSectionHeader.self, forHeaderFooterViewReuseIdentifier: "SectionHeader")
tableView.dataSource = dataSource
tableView.dragDelegate = self
tableView.dropDelegate = self
tableView.dragInteractionEnabled = true
resetEstimatedRowHeight()
tableView.separatorStyle = .none
NotificationCenter.default.addObserver(self, selector: #selector(unreadCountDidChange(_:)), name: .UnreadCountDidChange, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(faviconDidBecomeAvailable(_:)), name: .FaviconDidBecomeAvailable, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(webFeedIconDidBecomeAvailable(_:)), name: .WebFeedIconDidBecomeAvailable, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(webFeedSettingDidChange(_:)), name: .WebFeedSettingDidChange, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(contentSizeCategoryDidChange), name: UIContentSizeCategory.didChangeNotification, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(willEnterForeground(_:)), name: UIApplication.willEnterForegroundNotification, object: nil)
refreshControl = UIRefreshControl()
refreshControl!.addTarget(self, action: #selector(refreshAccounts(_:)), for: .valueChanged)
configureToolbar()
becomeFirstResponder()
}
override func viewWillAppear(_ animated: Bool) {
updateUI()
super.viewWillAppear(animated)
}
// MARK: Notifications
@objc func unreadCountDidChange(_ note: Notification) {
updateUI()
guard let representedObject = note.object else {
return
}
if let account = representedObject as? Account {
if let node = coordinator.rootNode.childNodeRepresentingObject(account) {
let sectionIndex = coordinator.rootNode.indexOfChild(node)!
if let headerView = tableView.headerView(forSection: sectionIndex) as? MasterFeedTableViewSectionHeader {
headerView.unreadCount = account.unreadCount
}
}
return
}
var node: Node? = nil
if let coordinator = representedObject as? SceneCoordinator, let feed = coordinator.timelineFeed {
node = coordinator.rootNode.descendantNodeRepresentingObject(feed as AnyObject)
} else {
node = coordinator.rootNode.descendantNodeRepresentingObject(representedObject as AnyObject)
}
guard let unreadCountNode = node else { return }
let identifier = makeIdentifier(unreadCountNode)
if dataSource.indexPath(for: identifier) != nil {
self.reload(identifier)
}
}
@objc func faviconDidBecomeAvailable(_ note: Notification) {
applyToAvailableCells(configureIcon)
}
@objc func webFeedIconDidBecomeAvailable(_ note: Notification) {
guard let webFeed = note.userInfo?[UserInfoKey.webFeed] as? WebFeed else {
return
}
applyToCellsForRepresentedObject(webFeed, configureIcon(_:_:))
}
@objc func webFeedSettingDidChange(_ note: Notification) {
guard let webFeed = note.object as? WebFeed, let key = note.userInfo?[WebFeed.WebFeedSettingUserInfoKey] as? String else {
return
}
if key == WebFeed.WebFeedSettingKey.homePageURL || key == WebFeed.WebFeedSettingKey.faviconURL {
configureCellsForRepresentedObject(webFeed)
}
}
@objc func contentSizeCategoryDidChange(_ note: Notification) {
resetEstimatedRowHeight()
applyChanges(animated: false)
}
@objc func willEnterForeground(_ note: Notification) {
updateUI()
}
// MARK: Table View
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
guard let nameProvider = coordinator.rootNode.childAtIndex(section)?.representedObject as? DisplayNameProvider else {
return 44
}
let headerView = MasterFeedTableViewSectionHeader()
headerView.name = nameProvider.nameForDisplay
let size = headerView.sizeThatFits(CGSize(width: tableView.bounds.width, height: 0.0))
return size.height
}
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
guard let nameProvider = coordinator.rootNode.childAtIndex(section)?.representedObject as? DisplayNameProvider else {
return nil
}
let headerView = tableView.dequeueReusableHeaderFooterView(withIdentifier: "SectionHeader") as! MasterFeedTableViewSectionHeader
headerView.delegate = self
headerView.name = nameProvider.nameForDisplay
guard let sectionNode = coordinator.rootNode.childAtIndex(section) else {
return headerView
}
if let account = sectionNode.representedObject as? Account {
headerView.unreadCount = account.unreadCount
} else {
headerView.unreadCount = 0
}
headerView.tag = section
headerView.disclosureExpanded = coordinator.isExpanded(sectionNode)
if section == tableView.numberOfSections - 1 {
headerView.isLastSection = true
} else {
headerView.isLastSection = false
}
headerView.gestureRecognizers?.removeAll()
let tap = UITapGestureRecognizer(target: self, action:#selector(self.toggleSectionHeader(_:)))
headerView.addGestureRecognizer(tap)
// Without this the swipe gesture registers on the cell below
let gestureRecognizer = UIPanGestureRecognizer(target: nil, action: nil)
gestureRecognizer.delegate = self
headerView.addGestureRecognizer(gestureRecognizer)
headerView.interactions.removeAll()
if section != 0 {
headerView.addInteraction(UIContextMenuInteraction(delegate: self))
}
return headerView
}
override func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return CGFloat.leastNormalMagnitude
}
override func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
return UIView(frame: CGRect.zero)
}
override func tableView(_ tableView: UITableView, trailingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
var actions = [UIContextualAction]()
// Set up the delete action
let deleteTitle = NSLocalizedString("Delete", comment: "Delete")
let deleteAction = UIContextualAction(style: .normal, title: deleteTitle) { [weak self] (action, view, completion) in
self?.delete(indexPath: indexPath)
completion(true)
}
deleteAction.backgroundColor = UIColor.systemRed
actions.append(deleteAction)
// Set up the rename action
let renameTitle = NSLocalizedString("Rename", comment: "Rename")
let renameAction = UIContextualAction(style: .normal, title: renameTitle) { [weak self] (action, view, completion) in
self?.rename(indexPath: indexPath)
completion(true)
}
renameAction.backgroundColor = UIColor.systemOrange
actions.append(renameAction)
if let identifier = dataSource.itemIdentifier(for: indexPath), identifier.isWebFeed {
let moreTitle = NSLocalizedString("More", comment: "More")
let moreAction = UIContextualAction(style: .normal, title: moreTitle) { [weak self] (action, view, completion) in
if let self = self {
let alert = UIAlertController(title: identifier.nameForDisplay, message: nil, preferredStyle: .actionSheet)
if let popoverController = alert.popoverPresentationController {
popoverController.sourceView = view
popoverController.sourceRect = CGRect(x: view.frame.size.width/2, y: view.frame.size.height/2, width: 1, height: 1)
}
if let action = self.getInfoAlertAction(indexPath: indexPath, completion: completion) {
alert.addAction(action)
}
if let action = self.homePageAlertAction(indexPath: indexPath, completion: completion) {
alert.addAction(action)
}
if let action = self.copyFeedPageAlertAction(indexPath: indexPath, completion: completion) {
alert.addAction(action)
}
if let action = self.copyHomePageAlertAction(indexPath: indexPath, completion: completion) {
alert.addAction(action)
}
if let action = self.markAllAsReadAlertAction(indexPath: indexPath, completion: completion) {
alert.addAction(action)
}
let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
alert.addAction(UIAlertAction(title: cancelTitle, style: .cancel) { _ in
completion(true)
})
self.present(alert, animated: true)
}
}
moreAction.backgroundColor = UIColor.systemGray
actions.append(moreAction)
}
return UISwipeActionsConfiguration(actions: actions)
}
override func tableView(_ tableView: UITableView, contextMenuConfigurationForRowAt indexPath: IndexPath, point: CGPoint) -> UIContextMenuConfiguration? {
guard let identifier = dataSource.itemIdentifier(for: indexPath) else {
return nil
}
if identifier.isWebFeed {
return makeWebFeedContextMenu(identifier: identifier, indexPath: indexPath, includeDeleteRename: true)
} else if identifier.isFolder {
return makeFolderContextMenu(identifier: identifier, indexPath: indexPath)
} else if identifier.isPsuedoFeed {
return makePseudoFeedContextMenu(identifier: identifier, indexPath: indexPath)
} else {
return nil
}
}
override func tableView(_ tableView: UITableView, previewForHighlightingContextMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
guard let identifier = configuration.identifier as? MasterFeedTableViewIdentifier,
let indexPath = dataSource.indexPath(for: identifier),
let cell = tableView.cellForRow(at: indexPath) else {
return nil
}
return UITargetedPreview(view: cell, parameters: CroppingPreviewParameters(view: cell))
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
becomeFirstResponder()
coordinator.selectFeed(indexPath: indexPath, animations: [.navigation, .select, .scroll])
}
override func tableView(_ tableView: UITableView, targetIndexPathForMoveFromRowAt sourceIndexPath: IndexPath, toProposedIndexPath proposedDestinationIndexPath: IndexPath) -> IndexPath {
// Adjust the index path so that it will never be in the smart feeds area
let destIndexPath: IndexPath = {
if proposedDestinationIndexPath.section == 0 {
return IndexPath(row: 0, section: 1)
}
return coordinator.cappedIndexPath(proposedDestinationIndexPath)
}()
guard let draggedIdentifier = dataSource.itemIdentifier(for: sourceIndexPath),
let draggedFeedID = draggedIdentifier.feedID,
let draggedNode = coordinator.nodeFor(feedID: draggedFeedID) else {
assertionFailure("This should never happen")
return sourceIndexPath
}
// If there is no destination node, we are dragging onto an empty Account
guard let destIdentifier = dataSource.itemIdentifier(for: destIndexPath),
let destFeedID = destIdentifier.feedID,
let destNode = coordinator.nodeFor(feedID: destFeedID),
let destParentContainerID = destIdentifier.parentContainerID,
let destParentNode = coordinator.nodeFor(containerID: destParentContainerID) else {
return proposedDestinationIndexPath
}
// If this is a folder and isn't expanded or doesn't have any entries, let the users drop on it
if destNode.representedObject is Folder && (destNode.numberOfChildNodes == 0 || !coordinator.isExpanded(destNode)) {
return proposedDestinationIndexPath
}
// If we are dragging around in the same container, just return the original source
if destParentNode.childNodes.contains(draggedNode) {
return sourceIndexPath
}
// Suggest to the user the best place to drop the feed
// Revisit if the tree controller can ever be sorted in some other way.
let nodes = destParentNode.childNodes + [draggedNode]
var sortedNodes = nodes.sortedAlphabeticallyWithFoldersAtEnd()
let index = sortedNodes.firstIndex(of: draggedNode)!
sortedNodes.remove(at: index)
if index == 0 {
if destParentNode.representedObject is Account {
return IndexPath(row: 0, section: destIndexPath.section)
} else {
let identifier = makeIdentifier(sortedNodes[index])
let candidateIndexPath = dataSource.indexPath(for: identifier)!
let movementAdjustment = sourceIndexPath < destIndexPath ? 1 : 0
return IndexPath(row: candidateIndexPath.row - movementAdjustment, section: candidateIndexPath.section)
}
} else {
if index >= sortedNodes.count {
let identifier = makeIdentifier(sortedNodes[sortedNodes.count - 1])
let lastSortedIndexPath = dataSource.indexPath(for: identifier)!
let movementAdjustment = sourceIndexPath > destIndexPath ? 1 : 0
return IndexPath(row: lastSortedIndexPath.row + movementAdjustment, section: lastSortedIndexPath.section)
} else {
let movementAdjustment = sourceIndexPath < destIndexPath ? 1 : 0
let identifer = makeIdentifier(sortedNodes[index - movementAdjustment])
return dataSource.indexPath(for: identifer)!
}
}
}
// MARK: Actions
@IBAction func settings(_ sender: UIBarButtonItem) {
coordinator.showSettings()
}
@IBAction func toggleFilter(_ sender: Any) {
coordinator.toggleReadFeedsFilter()
}
@IBAction func add(_ sender: UIBarButtonItem) {
let title = NSLocalizedString("Add Item", comment: "Add Item")
let alertController = UIAlertController(title: title, message: nil, preferredStyle: .actionSheet)
let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
let cancelAction = UIAlertAction(title: cancelTitle, style: .cancel)
let addWebFeedActionTitle = NSLocalizedString("Add Web Feed", comment: "Add Web Feed")
let addWebFeedAction = UIAlertAction(title: addWebFeedActionTitle, style: .default) { _ in
self.coordinator.showAddWebFeed()
}
let addRedditFeedActionTitle = NSLocalizedString("Add Reddit Feed", comment: "Add Reddit Feed")
let addRedditFeedAction = UIAlertAction(title: addRedditFeedActionTitle, style: .default) { _ in
self.coordinator.showAddRedditFeed()
}
let addTwitterFeedActionTitle = NSLocalizedString("Add Twitter Feed", comment: "Add Twitter Feed")
let addTwitterFeedAction = UIAlertAction(title: addTwitterFeedActionTitle, style: .default) { _ in
self.coordinator.showAddTwitterFeed()
}
let addWebFolderdActionTitle = NSLocalizedString("Add Folder", comment: "Add Folder")
let addWebFolderAction = UIAlertAction(title: addWebFolderdActionTitle, style: .default) { _ in
self.coordinator.showAddFolder()
}
alertController.addAction(addWebFeedAction)
if AccountManager.shared.activeAccounts.contains(where: { $0.type == .onMyMac || $0.type == .cloudKit }) {
if ExtensionPointManager.shared.isRedditEnabled {
alertController.addAction(addRedditFeedAction)
}
if ExtensionPointManager.shared.isTwitterEnabled {
alertController.addAction(addTwitterFeedAction)
}
}
alertController.addAction(addWebFolderAction)
alertController.addAction(cancelAction)
alertController.popoverPresentationController?.barButtonItem = sender
present(alertController, animated: true)
}
@objc func toggleSectionHeader(_ sender: UITapGestureRecognizer) {
guard let headerView = sender.view as? MasterFeedTableViewSectionHeader else {
return
}
toggle(headerView)
}
@objc func refreshAccounts(_ sender: Any) {
refreshControl?.endRefreshing()
// This is a hack to make sure that an error dialog doesn't interfere with dismissing the refreshControl.
// If the error dialog appears too closely to the call to endRefreshing, then the refreshControl never disappears.
DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
appDelegate.manualRefresh(errorHandler: ErrorHandler.present(self))
}
}
// MARK: Keyboard shortcuts
@objc func selectNextUp(_ sender: Any?) {
coordinator.selectPrevFeed()
}
@objc func selectNextDown(_ sender: Any?) {
coordinator.selectNextFeed()
}
@objc func navigateToTimeline(_ sender: Any?) {
coordinator.navigateToTimeline()
}
@objc func openInBrowser(_ sender: Any?) {
coordinator.showBrowserForCurrentFeed()
}
@objc override func delete(_ sender: Any?) {
if let indexPath = coordinator.currentFeedIndexPath {
delete(indexPath: indexPath)
}
}
@objc func expandSelectedRows(_ sender: Any?) {
if let indexPath = coordinator.currentFeedIndexPath, let containerID = dataSource.itemIdentifier(for: indexPath)?.containerID {
coordinator.expand(containerID)
self.applyChanges(animated: true) {
self.reloadAllVisibleCells()
}
}
}
@objc func collapseSelectedRows(_ sender: Any?) {
if let indexPath = coordinator.currentFeedIndexPath, let containerID = dataSource.itemIdentifier(for: indexPath)?.containerID {
coordinator.collapse(containerID)
self.applyChanges(animated: true) {
self.reloadAllVisibleCells()
}
}
}
@objc func expandAll(_ sender: Any?) {
coordinator.expandAllSectionsAndFolders()
self.applyChanges(animated: true) {
self.reloadAllVisibleCells()
}
}
@objc func collapseAllExceptForGroupItems(_ sender: Any?) {
coordinator.collapseAllFolders()
self.applyChanges(animated: true) {
self.reloadAllVisibleCells()
}
}
@objc func markAllAsRead(_ sender: Any) {
guard let indexPath = tableView.indexPathForSelectedRow, let contentView = tableView.cellForRow(at: indexPath)?.contentView else {
return
}
let title = NSLocalizedString("Mark All as Read", comment: "Mark All as Read")
MarkAsReadAlertController.confirm(self, coordinator: coordinator, confirmTitle: title, sourceType: contentView) { [weak self] in
self?.coordinator.markAllAsReadInTimeline()
}
}
@objc func showFeedInspector(_ sender: Any?) {
coordinator.showFeedInspector()
}
// MARK: API
func restoreSelectionIfNecessary(adjustScroll: Bool) {
if let indexPath = coordinator.masterFeedIndexPathForCurrentTimeline() {
if adjustScroll {
tableView.selectRowAndScrollIfNotVisible(at: indexPath, animations: [])
} else {
tableView.selectRow(at: indexPath, animated: false, scrollPosition: .none)
}
}
}
func updateFeedSelection(animations: Animations) {
operationQueue.add(UpdateSelectionOperation(coordinator: coordinator, dataSource: dataSource, tableView: tableView, animations: animations))
}
func reloadFeeds(initialLoad: Bool, completion: (() -> Void)? = nil) {
updateUI()
// We have to reload all the visible cells because if we got here by doing a table cell move,
// then the table itself is in a weird state. This is because we do unusual things like allowing
// drops on a "folder" that should cause the dropped cell to disappear.
applyChanges(animated: !initialLoad) { [weak self] in
if !initialLoad {
self?.reloadAllVisibleCells(completion: completion)
} else {
completion?()
}
}
}
func updateUI() {
if coordinator.isReadFeedsFiltered {
setFilterButtonToActive()
} else {
setFilterButtonToInactive()
}
refreshProgressView?.update()
addNewItemButton?.isEnabled = !AccountManager.shared.activeAccounts.isEmpty
}
func focus() {
becomeFirstResponder()
}
func openInAppBrowser() {
if let indexPath = coordinator.currentFeedIndexPath,
let url = coordinator.homePageURLForFeed(indexPath) {
let vc = SFSafariViewController(url: url)
present(vc, animated: true)
}
}
}
// MARK: UIContextMenuInteractionDelegate
extension MasterFeedViewController: UIContextMenuInteractionDelegate {
func contextMenuInteraction(_ interaction: UIContextMenuInteraction, configurationForMenuAtLocation location: CGPoint) -> UIContextMenuConfiguration? {
guard let sectionIndex = interaction.view?.tag,
let sectionNode = coordinator.rootNode.childAtIndex(sectionIndex),
let account = sectionNode.representedObject as? Account
else {
return nil
}
return UIContextMenuConfiguration(identifier: sectionIndex as NSCopying, previewProvider: nil) { suggestedActions in
let accountInfoAction = self.getAccountInfoAction(account: account)
let deactivateAction = self.deactivateAccountAction(account: account)
var actions = [accountInfoAction, deactivateAction]
if let markAllAction = self.markAllAsReadAction(account: account, contentView: interaction.view) {
actions.insert(markAllAction, at: 1)
}
return UIMenu(title: "", children: actions)
}
}
func contextMenuInteraction(_ interaction: UIContextMenuInteraction, previewForHighlightingMenuWithConfiguration configuration: UIContextMenuConfiguration) -> UITargetedPreview? {
guard let sectionIndex = configuration.identifier as? Int,
let cell = tableView.headerView(forSection: sectionIndex) else {
return nil
}
return UITargetedPreview(view: cell, parameters: CroppingPreviewParameters(view: cell))
}
}
// MARK: MasterFeedTableViewSectionHeaderDelegate
extension MasterFeedViewController: MasterFeedTableViewSectionHeaderDelegate {
func masterFeedTableViewSectionHeaderDisclosureDidToggle(_ sender: MasterFeedTableViewSectionHeader) {
toggle(sender)
}
}
// MARK: MasterTableViewCellDelegate
extension MasterFeedViewController: MasterFeedTableViewCellDelegate {
func masterFeedTableViewCellDisclosureDidToggle(_ sender: MasterFeedTableViewCell, expanding: Bool) {
if expanding {
expand(sender)
} else {
collapse(sender)
}
}
}
// MARK: Private
private extension MasterFeedViewController {
func configureToolbar() {
guard let refreshProgressView = Bundle.main.loadNibNamed("RefreshProgressView", owner: self, options: nil)?[0] as? RefreshProgressView else {
return
}
self.refreshProgressView = refreshProgressView
let refreshProgressItemButton = UIBarButtonItem(customView: refreshProgressView)
toolbarItems?.insert(refreshProgressItemButton, at: 2)
}
func setFilterButtonToActive() {
filterButton?.image = AppAssets.filterActiveImage
filterButton?.accLabelText = NSLocalizedString("Selected - Filter Read Feeds", comment: "Selected - Filter Read Feeds")
}
func setFilterButtonToInactive() {
filterButton?.image = AppAssets.filterInactiveImage
filterButton?.accLabelText = NSLocalizedString("Filter Read Feeds", comment: "Filter Read Feeds")
}
func makeIdentifier(_ node: Node) -> MasterFeedTableViewIdentifier {
let unreadCount = coordinator.unreadCountFor(node)
return MasterFeedTableViewIdentifier(node: node, unreadCount: unreadCount)
}
func reload(_ identifier: MasterFeedTableViewIdentifier) {
var snapshot = dataSource.snapshot()
snapshot.reloadItems([identifier])
queueApply(snapshot: snapshot, animatingDifferences: false) { [weak self] in
self?.restoreSelectionIfNecessary(adjustScroll: false)
}
}
func applyChanges(animated: Bool, adjustScroll: Bool = false, completion: (() -> Void)? = nil) {
var snapshot = NSDiffableDataSourceSnapshot<Int, MasterFeedTableViewIdentifier>()
let sectionIdentifiers = Array(0...coordinator.rootNode.childNodes.count - 1)
snapshot.appendSections(sectionIdentifiers)
for sectionIdentifer in sectionIdentifiers {
let identifiers = coordinator.shadowNodesFor(section: sectionIdentifer).map { makeIdentifier($0) }
snapshot.appendItems(identifiers, toSection: sectionIdentifer)
}
queueApply(snapshot: snapshot, animatingDifferences: animated) { [weak self] in
self?.restoreSelectionIfNecessary(adjustScroll: adjustScroll)
completion?()
}
}
func queueApply(snapshot: NSDiffableDataSourceSnapshot<Int, MasterFeedTableViewIdentifier>, animatingDifferences: Bool = true, completion: (() -> Void)? = nil) {
let operation = MasterFeedDataSourceOperation(dataSource: dataSource, snapshot: snapshot, animating: animatingDifferences)
operation.completionBlock = { [weak self] _ in
self?.enableTableViewSelection()
completion?()
}
disableTableViewSelectionIfNecessary()
operationQueue.add(operation)
}
private func disableTableViewSelectionIfNecessary() {
// We only need to disable tableView selection if the feeds are filtered by unread
guard coordinator.isReadFeedsFiltered else { return }
tableView.allowsSelection = false
}
private func enableTableViewSelection() {
tableView.allowsSelection = true
}
func makeDataSource() -> MasterFeedDataSource {
let dataSource = MasterFeedDataSource(tableView: tableView, cellProvider: { [weak self] tableView, indexPath, cellContents in
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! MasterFeedTableViewCell
self?.configure(cell, cellContents)
return cell
})
dataSource.defaultRowAnimation = .middle
return dataSource
}
func resetEstimatedRowHeight() {
let titleLabel = NonIntrinsicLabel()
titleLabel.text = "But I must explain"
let unreadCountView = MasterFeedUnreadCountView()
unreadCountView.unreadCount = 10
let layout = MasterFeedTableViewCellLayout(cellWidth: tableView.bounds.size.width, insets: tableView.safeAreaInsets, label: titleLabel, unreadCountView: unreadCountView, showingEditingControl: false, indent: false, shouldShowDisclosure: false)
tableView.estimatedRowHeight = layout.height
}
func configure(_ cell: MasterFeedTableViewCell, _ identifier: MasterFeedTableViewIdentifier) {
cell.delegate = self
if identifier.isFolder {
cell.indentationLevel = 0
} else {
cell.indentationLevel = 1
}
if let containerID = identifier.containerID {
cell.setDisclosure(isExpanded: coordinator.isExpanded(containerID), animated: false)
cell.isDisclosureAvailable = true
} else {
cell.isDisclosureAvailable = false
}
cell.name = identifier.nameForDisplay
cell.unreadCount = identifier.unreadCount
configureIcon(cell, identifier)
guard let indexPath = dataSource.indexPath(for: identifier) else { return }
let rowsInSection = tableView.numberOfRows(inSection: indexPath.section)
if indexPath.row == rowsInSection - 1 {
cell.isSeparatorShown = false
} else {
cell.isSeparatorShown = true
}
}
func configureIcon(_ cell: MasterFeedTableViewCell, _ identifier: MasterFeedTableViewIdentifier) {
cell.iconImage = imageFor(identifier)
}
func imageFor(_ identifier: MasterFeedTableViewIdentifier) -> IconImage? {
guard let feedID = identifier.feedID else { return nil }
if let smartFeed = SmartFeedsController.shared.find(by: feedID) {
return smartFeed.smallIcon
}
guard let feed = AccountManager.shared.existingFeed(with: feedID) else { return nil }
if let webFeed = feed as? WebFeed {
let feedIconImage = appDelegate.webFeedIconDownloader.icon(for: webFeed)
if feedIconImage != nil {
return feedIconImage
}
if let faviconImage = appDelegate.faviconDownloader.faviconAsIcon(for: webFeed) {
return faviconImage
}
}
if let smallIconProvider = feed as? SmallIconProvider {
return smallIconProvider.smallIcon
}
return nil
}
func nameFor(_ node: Node) -> String {
if let displayNameProvider = node.representedObject as? DisplayNameProvider {
return displayNameProvider.nameForDisplay
}
return ""
}
func configureCellsForRepresentedObject(_ representedObject: AnyObject) {
applyToCellsForRepresentedObject(representedObject, configure)
}
func applyToCellsForRepresentedObject(_ representedObject: AnyObject, _ completion: (MasterFeedTableViewCell, MasterFeedTableViewIdentifier) -> Void) {
applyToAvailableCells { (cell, identifier) in
if let representedFeed = representedObject as? Feed, representedFeed.feedID == identifier.feedID {
completion(cell, identifier)
}
}
}
func applyToAvailableCells(_ completion: (MasterFeedTableViewCell, MasterFeedTableViewIdentifier) -> Void) {
tableView.visibleCells.forEach { cell in
guard let indexPath = tableView.indexPath(for: cell), let identifier = dataSource.itemIdentifier(for: indexPath) else {
return
}
completion(cell as! MasterFeedTableViewCell, identifier)
}
}
private func reloadAllVisibleCells(completion: (() -> Void)? = nil) {
let visibleNodes = tableView.indexPathsForVisibleRows!.compactMap { return dataSource.itemIdentifier(for: $0) }
reloadCells(visibleNodes, completion: completion)
}
private func reloadCells(_ identifiers: [MasterFeedTableViewIdentifier], completion: (() -> Void)? = nil) {
var snapshot = dataSource.snapshot()
snapshot.reloadItems(identifiers)
queueApply(snapshot: snapshot, animatingDifferences: false) { [weak self] in
self?.restoreSelectionIfNecessary(adjustScroll: false)
completion?()
}
}
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? WebFeed {
return feed.account
}
return nil
}
func toggle(_ headerView: MasterFeedTableViewSectionHeader) {
guard let sectionNode = coordinator.rootNode.childAtIndex(headerView.tag) else {
return
}
if coordinator.isExpanded(sectionNode) {
headerView.disclosureExpanded = false
coordinator.collapse(sectionNode)
self.applyChanges(animated: true)
} else {
headerView.disclosureExpanded = true
coordinator.expand(sectionNode)
self.applyChanges(animated: true)
}
}
func expand(_ cell: MasterFeedTableViewCell) {
guard let indexPath = tableView.indexPath(for: cell), let containerID = dataSource.itemIdentifier(for: indexPath)?.containerID else {
return
}
coordinator.expand(containerID)
applyChanges(animated: true)
}
func collapse(_ cell: MasterFeedTableViewCell) {
guard let indexPath = tableView.indexPath(for: cell), let containerID = dataSource.itemIdentifier(for: indexPath)?.containerID else {
return
}
coordinator.collapse(containerID)
applyChanges(animated: true)
}
func makeWebFeedContextMenu(identifier: MasterFeedTableViewIdentifier, indexPath: IndexPath, includeDeleteRename: Bool) -> UIContextMenuConfiguration {
return UIContextMenuConfiguration(identifier: identifier as NSCopying, previewProvider: nil, actionProvider: { [ weak self] suggestedActions in
guard let self = self else { return nil }
var actions = [UIAction]()
if let inspectorAction = self.getInfoAction(indexPath: indexPath) {
actions.append(inspectorAction)
}
if let homePageAction = self.homePageAction(indexPath: indexPath) {
actions.append(homePageAction)
}
if let copyFeedPageAction = self.copyFeedPageAction(indexPath: indexPath) {
actions.append(copyFeedPageAction)
}
if let copyHomePageAction = self.copyHomePageAction(indexPath: indexPath) {
actions.append(copyHomePageAction)
}
if let markAllAction = self.markAllAsReadAction(indexPath: indexPath) {
actions.append(markAllAction)
}
if includeDeleteRename {
actions.append(self.renameAction(indexPath: indexPath))
actions.append(self.deleteAction(indexPath: indexPath))
}
return UIMenu(title: "", children: actions)
})
}
func makeFolderContextMenu(identifier: MasterFeedTableViewIdentifier, indexPath: IndexPath) -> UIContextMenuConfiguration {
return UIContextMenuConfiguration(identifier: identifier as NSCopying, previewProvider: nil, actionProvider: { [weak self] suggestedActions in
guard let self = self else { return nil }
var actions = [UIAction]()
actions.append(self.deleteAction(indexPath: indexPath))
actions.append(self.renameAction(indexPath: indexPath))
if let markAllAction = self.markAllAsReadAction(indexPath: indexPath) {
actions.append(markAllAction)
}
return UIMenu(title: "", children: actions)
})
}
func makePseudoFeedContextMenu(identifier: MasterFeedTableViewIdentifier, indexPath: IndexPath) -> UIContextMenuConfiguration? {
guard let markAllAction = self.markAllAsReadAction(indexPath: indexPath) else {
return nil
}
return UIContextMenuConfiguration(identifier: identifier as NSCopying, previewProvider: nil, actionProvider: { suggestedActions in
return UIMenu(title: "", children: [markAllAction])
})
}
func homePageAction(indexPath: IndexPath) -> UIAction? {
guard coordinator.homePageURLForFeed(indexPath) != nil else {
return nil
}
let title = NSLocalizedString("Open Home Page", comment: "Open Home Page")
let action = UIAction(title: title, image: AppAssets.safariImage) { [weak self] action in
self?.coordinator.showBrowserForFeed(indexPath)
}
return action
}
func homePageAlertAction(indexPath: IndexPath, completion: @escaping (Bool) -> Void) -> UIAlertAction? {
guard coordinator.homePageURLForFeed(indexPath) != nil else {
return nil
}
let title = NSLocalizedString("Open Home Page", comment: "Open Home Page")
let action = UIAlertAction(title: title, style: .default) { [weak self] action in
self?.coordinator.showBrowserForFeed(indexPath)
completion(true)
}
return action
}
func copyFeedPageAction(indexPath: IndexPath) -> UIAction? {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID,
let webFeed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed,
let url = URL(string: webFeed.url) else {
return nil
}
let title = NSLocalizedString("Copy Feed URL", comment: "Copy Feed URL")
let action = UIAction(title: title, image: AppAssets.copyImage) { action in
UIPasteboard.general.url = url
}
return action
}
func copyFeedPageAlertAction(indexPath: IndexPath, completion: @escaping (Bool) -> Void) -> UIAlertAction? {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID,
let webFeed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed,
let url = URL(string: webFeed.url) else {
return nil
}
let title = NSLocalizedString("Copy Feed URL", comment: "Copy Feed URL")
let action = UIAlertAction(title: title, style: .default) { action in
UIPasteboard.general.url = url
completion(true)
}
return action
}
func copyHomePageAction(indexPath: IndexPath) -> UIAction? {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID,
let webFeed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed,
let homePageURL = webFeed.homePageURL,
let url = URL(string: homePageURL) else {
return nil
}
let title = NSLocalizedString("Copy Home Page URL", comment: "Copy Home Page URL")
let action = UIAction(title: title, image: AppAssets.copyImage) { action in
UIPasteboard.general.url = url
}
return action
}
func copyHomePageAlertAction(indexPath: IndexPath, completion: @escaping (Bool) -> Void) -> UIAlertAction? {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID,
let webFeed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed,
let homePageURL = webFeed.homePageURL,
let url = URL(string: homePageURL) else {
return nil
}
let title = NSLocalizedString("Copy Home Page URL", comment: "Copy Home Page URL")
let action = UIAlertAction(title: title, style: .default) { action in
UIPasteboard.general.url = url
completion(true)
}
return action
}
func markAllAsReadAlertAction(indexPath: IndexPath, completion: @escaping (Bool) -> Void) -> UIAlertAction? {
guard let identifier = dataSource.itemIdentifier(for: indexPath),
identifier.unreadCount > 0,
let feedID = identifier.feedID,
let feed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed,
let articles = try? feed.fetchArticles(), let contentView = self.tableView.cellForRow(at: indexPath)?.contentView else {
return nil
}
let localizedMenuText = NSLocalizedString("Mark All as Read in “%@”", comment: "Command")
let title = NSString.localizedStringWithFormat(localizedMenuText as NSString, feed.nameForDisplay) as String
let cancel = {
completion(true)
}
let action = UIAlertAction(title: title, style: .default) { [weak self] action in
MarkAsReadAlertController.confirm(self, coordinator: self?.coordinator, confirmTitle: title, sourceType: contentView, cancelCompletion: cancel) { [weak self] in
self?.coordinator.markAllAsRead(Array(articles))
completion(true)
}
}
return action
}
func deleteAction(indexPath: IndexPath) -> UIAction {
let title = NSLocalizedString("Delete", comment: "Delete")
let action = UIAction(title: title, image: AppAssets.trashImage, attributes: .destructive) { [weak self] action in
self?.delete(indexPath: indexPath)
}
return action
}
func renameAction(indexPath: IndexPath) -> UIAction {
let title = NSLocalizedString("Rename", comment: "Rename")
let action = UIAction(title: title, image: AppAssets.editImage) { [weak self] action in
self?.rename(indexPath: indexPath)
}
return action
}
func getInfoAction(indexPath: IndexPath) -> UIAction? {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID, let feed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed else {
return nil
}
let title = NSLocalizedString("Get Info", comment: "Get Info")
let action = UIAction(title: title, image: AppAssets.infoImage) { [weak self] action in
self?.coordinator.showFeedInspector(for: feed)
}
return action
}
func getAccountInfoAction(account: Account) -> UIAction {
let title = NSLocalizedString("Get Info", comment: "Get Info")
let action = UIAction(title: title, image: AppAssets.infoImage) { [weak self] action in
self?.coordinator.showAccountInspector(for: account)
}
return action
}
func deactivateAccountAction(account: Account) -> UIAction {
let title = NSLocalizedString("Deactivate", comment: "Deactivate")
let action = UIAction(title: title, image: AppAssets.deactivateImage) { action in
account.isActive = false
}
return action
}
func getInfoAlertAction(indexPath: IndexPath, completion: @escaping (Bool) -> Void) -> UIAlertAction? {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID, let feed = AccountManager.shared.existingFeed(with: feedID) as? WebFeed else {
return nil
}
let title = NSLocalizedString("Get Info", comment: "Get Info")
let action = UIAlertAction(title: title, style: .default) { [weak self] action in
self?.coordinator.showFeedInspector(for: feed)
completion(true)
}
return action
}
func markAllAsReadAction(indexPath: IndexPath) -> UIAction? {
guard let identifier = dataSource.itemIdentifier(for: indexPath), identifier.unreadCount > 0 else {
return nil
}
guard let feedID = identifier.feedID,
let feed = AccountManager.shared.existingFeed(with: feedID),
feed.unreadCount > 0,
let contentView = self.tableView.cellForRow(at: indexPath)?.contentView else {
return nil
}
let localizedMenuText = NSLocalizedString("Mark All as Read in “%@”", comment: "Command")
let title = NSString.localizedStringWithFormat(localizedMenuText as NSString, feed.nameForDisplay) as String
let action = UIAction(title: title, image: AppAssets.markAllAsReadImage) { [weak self] action in
MarkAsReadAlertController.confirm(self, coordinator: self?.coordinator, confirmTitle: title, sourceType: contentView) { [weak self] in
if let articles = try? feed.fetchUnreadArticles() {
self?.coordinator.markAllAsRead(Array(articles))
}
}
}
return action
}
func markAllAsReadAction(account: Account, contentView: UIView?) -> UIAction? {
guard account.unreadCount > 0, let contentView = contentView else {
return nil
}
let localizedMenuText = NSLocalizedString("Mark All as Read in “%@”", comment: "Command")
let title = NSString.localizedStringWithFormat(localizedMenuText as NSString, account.nameForDisplay) as String
let action = UIAction(title: title, image: AppAssets.markAllAsReadImage) { [weak self] action in
MarkAsReadAlertController.confirm(self, coordinator: self?.coordinator, confirmTitle: title, sourceType: contentView) { [weak self] in
if let articles = try? account.fetchArticles(.unread) {
self?.coordinator.markAllAsRead(Array(articles))
}
}
}
return action
}
func rename(indexPath: IndexPath) {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID, let feed = AccountManager.shared.existingFeed(with: feedID) else { return }
let name = dataSource.itemIdentifier(for: indexPath)?.nameForDisplay ?? ""
let formatString = NSLocalizedString("Rename “%@”", comment: "Rename feed")
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 name = alertController.textFields?[0].text, !name.isEmpty else {
return
}
if let webFeed = feed as? WebFeed {
webFeed.rename(to: name) { result in
switch result {
case .success:
break
case .failure(let error):
self?.presentError(error)
}
}
} else if let folder = feed as? Folder {
folder.rename(to: name) { result in
switch result {
case .success:
break
case .failure(let error):
self?.presentError(error)
}
}
}
}
alertController.addAction(renameAction)
alertController.addTextField() { textField in
textField.text = name
textField.placeholder = NSLocalizedString("Name", comment: "Name")
}
self.present(alertController, animated: true) {
}
}
func delete(indexPath: IndexPath) {
guard let feedID = dataSource.itemIdentifier(for: indexPath)?.feedID, let feed = AccountManager.shared.existingFeed(with: feedID) else { return }
let title: String
let message: String
if feed is Folder {
title = NSLocalizedString("Delete Folder", comment: "Delete folder")
let localizedInformativeText = NSLocalizedString("Are you sure you want to delete the “%@” folder?", comment: "Folder delete text")
message = NSString.localizedStringWithFormat(localizedInformativeText as NSString, feed.nameForDisplay) as String
} else {
title = NSLocalizedString("Delete Feed", comment: "Delete feed")
let localizedInformativeText = NSLocalizedString("Are you sure you want to delete the “%@” feed?", comment: "Feed delete text")
message = NSString.localizedStringWithFormat(localizedInformativeText as NSString, feed.nameForDisplay) as String
}
let alertController = UIAlertController(title: title, message: message, preferredStyle: .alert)
let cancelTitle = NSLocalizedString("Cancel", comment: "Cancel")
alertController.addAction(UIAlertAction(title: cancelTitle, style: .cancel))
let deleteTitle = NSLocalizedString("Delete", comment: "Delete")
let deleteAction = UIAlertAction(title: deleteTitle, style: .default) { [weak self] action in
self?.delete(indexPath: indexPath, feedID: feedID)
}
alertController.addAction(deleteAction)
self.present(alertController, animated: true)
}
func delete(indexPath: IndexPath, feedID: FeedIdentifier) {
guard let undoManager = undoManager,
let deleteNode = coordinator.nodeFor(feedID: feedID),
let deleteCommand = DeleteCommand(nodesToDelete: [deleteNode], undoManager: undoManager, errorHandler: ErrorHandler.present(self)) else {
return
}
if let folder = deleteNode.representedObject as? Folder {
ActivityManager.cleanUp(folder)
} else if let feed = deleteNode.representedObject as? WebFeed {
ActivityManager.cleanUp(feed)
}
pushUndoableCommand(deleteCommand)
deleteCommand.perform()
if indexPath == coordinator.currentFeedIndexPath {
coordinator.selectFeed(indexPath: nil)
}
}
}
extension MasterFeedViewController: UIGestureRecognizerDelegate {
func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
guard let gestureRecognizer = gestureRecognizer as? UIPanGestureRecognizer else {
return false
}
let velocity = gestureRecognizer.velocity(in: self.view)
return abs(velocity.x) > abs(velocity.y);
}
}