mirror of
https://github.com/Ranchero-Software/NetNewsWire.git
synced 2025-01-14 18:45:55 +01:00
481 lines
14 KiB
Swift
481 lines
14 KiB
Swift
//
|
||
// TimelineModel.swift
|
||
// NetNewsWire
|
||
//
|
||
// Created by Maurice Parker on 6/30/20.
|
||
// Copyright © 2020 Ranchero Software. All rights reserved.
|
||
//
|
||
|
||
#if os(macOS)
|
||
import AppKit
|
||
#else
|
||
import UIKit
|
||
#endif
|
||
import Combine
|
||
import RSCore
|
||
import Account
|
||
import Articles
|
||
|
||
protocol TimelineModelDelegate: class {
|
||
var selectedFeeds: Published<[Feed]>.Publisher { get }
|
||
func timelineRequestedWebFeedSelection(_: TimelineModel, webFeed: WebFeed)
|
||
}
|
||
|
||
class TimelineModel: ObservableObject, UndoableCommandRunner {
|
||
|
||
weak var delegate: TimelineModelDelegate?
|
||
|
||
@Published var nameForDisplay = ""
|
||
@Published var selectedArticleIDs = Set<String>() // Don't use directly. Use selectedArticles
|
||
@Published var selectedArticleID: String? = .none // Don't use directly. Use selectedArticles
|
||
@Published var selectedArticles = [Article]()
|
||
@Published var readFilterEnabledTable = [FeedIdentifier: Bool]()
|
||
@Published var isReadFiltered: Bool? = nil
|
||
|
||
@Published var articles = [Article]() {
|
||
didSet {
|
||
articleDictionaryNeedsUpdate = true
|
||
}
|
||
}
|
||
|
||
@Published var timelineItems = [TimelineItem]() {
|
||
didSet {
|
||
timelineItemDictionaryNeedsUpdate = true
|
||
}
|
||
}
|
||
|
||
var undoManager: UndoManager?
|
||
var undoableCommands = [UndoableCommand]()
|
||
|
||
private var cancellables = Set<AnyCancellable>()
|
||
|
||
private var feeds = [Feed]()
|
||
private var fetchSerialNumber = 0
|
||
private let fetchRequestQueue = FetchRequestQueue()
|
||
private var exceptionArticleFetcher: ArticleFetcher?
|
||
|
||
private var articleDictionaryNeedsUpdate = true
|
||
private var _idToArticleDictionary = [String: Article]()
|
||
private var idToArticleDictionary: [String: Article] {
|
||
if articleDictionaryNeedsUpdate {
|
||
rebuildArticleDictionaries()
|
||
}
|
||
return _idToArticleDictionary
|
||
}
|
||
|
||
private var timelineItemDictionaryNeedsUpdate = true
|
||
private var _idToTimelineItemDictionary = [String: Int]()
|
||
private var idToTimelineItemDictionary: [String: Int] {
|
||
if timelineItemDictionaryNeedsUpdate {
|
||
rebuildTimelineItemDictionaries()
|
||
}
|
||
return _idToTimelineItemDictionary
|
||
}
|
||
|
||
private var sortDirection = AppDefaults.shared.timelineSortDirection {
|
||
didSet {
|
||
if sortDirection != oldValue {
|
||
sortParametersDidChange()
|
||
}
|
||
}
|
||
}
|
||
|
||
private var groupByFeed = AppDefaults.shared.timelineGroupByFeed {
|
||
didSet {
|
||
if groupByFeed != oldValue {
|
||
sortParametersDidChange()
|
||
}
|
||
}
|
||
}
|
||
|
||
func startup() {
|
||
subscribeToArticleStatusChanges()
|
||
subscribeToUserDefaultsChanges()
|
||
subscribeToSelectedFeedChanges()
|
||
subscribeToSelectedArticleSelectionChanges()
|
||
}
|
||
|
||
// MARK: Subscriptions
|
||
|
||
func subscribeToArticleStatusChanges() {
|
||
NotificationCenter.default.publisher(for: .StatusesDidChange).sink { [weak self] note in
|
||
guard let self = self, let articleIDs = note.userInfo?[Account.UserInfoKey.articleIDs] as? Set<String> else {
|
||
return
|
||
}
|
||
articleIDs.forEach { articleID in
|
||
if let timelineItemIndex = self.idToTimelineItemDictionary[articleID] {
|
||
self.timelineItems[timelineItemIndex].updateStatus()
|
||
}
|
||
}
|
||
}.store(in: &cancellables)
|
||
}
|
||
|
||
func subscribeToUserDefaultsChanges() {
|
||
NotificationCenter.default.publisher(for: UserDefaults.didChangeNotification).sink { [weak self] _ in
|
||
self?.sortDirection = AppDefaults.shared.timelineSortDirection
|
||
self?.groupByFeed = AppDefaults.shared.timelineGroupByFeed
|
||
}.store(in: &cancellables)
|
||
}
|
||
|
||
func subscribeToSelectedFeedChanges() {
|
||
delegate?.selectedFeeds.sink { [weak self] feeds in
|
||
guard let self = self else { return }
|
||
self.feeds = feeds
|
||
self.fetchArticles()
|
||
}.store(in: &cancellables)
|
||
}
|
||
|
||
func subscribeToSelectedArticleSelectionChanges() {
|
||
$selectedArticleIDs.map { [weak self] articleIDs in
|
||
return articleIDs.compactMap { self?.idToArticleDictionary[$0] }
|
||
}
|
||
.assign(to: $selectedArticles)
|
||
|
||
$selectedArticleID.compactMap { [weak self] articleID in
|
||
if let articleID = articleID, let article = self?.idToArticleDictionary[articleID] {
|
||
return [article]
|
||
} else {
|
||
return nil
|
||
}
|
||
}
|
||
.assign(to: $selectedArticles)
|
||
|
||
$selectedArticles
|
||
.filter { $0.count == 1 }
|
||
.compactMap { $0.first }
|
||
.filter { !$0.status.read }
|
||
.sink { markArticles(Set([$0]), statusKey: .read, flag: true) }
|
||
.store(in: &cancellables)
|
||
}
|
||
|
||
// MARK: API
|
||
|
||
func toggleReadFilter() {
|
||
guard let filter = isReadFiltered, let feedID = feeds.first?.feedID else { return }
|
||
readFilterEnabledTable[feedID] = !filter
|
||
isReadFiltered = !filter
|
||
self.fetchArticles()
|
||
}
|
||
|
||
func toggleReadStatusForSelectedArticles() {
|
||
guard !selectedArticles.isEmpty else {
|
||
return
|
||
}
|
||
if selectedArticles.anyArticleIsUnread() {
|
||
markSelectedArticlesAsRead()
|
||
} else {
|
||
markSelectedArticlesAsUnread()
|
||
}
|
||
}
|
||
|
||
func canMarkIndicatedArticlesAsRead(_ article: Article) -> Bool {
|
||
let articles = indicatedArticles(article)
|
||
return articles.anyArticleIsUnread()
|
||
}
|
||
|
||
func markIndicatedArticlesAsRead(_ article: Article) {
|
||
let articles = indicatedArticles(article)
|
||
markArticlesWithUndo(articles, statusKey: .read, flag: true)
|
||
}
|
||
|
||
func markSelectedArticlesAsRead() {
|
||
markArticlesWithUndo(selectedArticles, statusKey: .read, flag: true)
|
||
}
|
||
|
||
func canMarkIndicatedArticlesAsUnread(_ article: Article) -> Bool {
|
||
let articles = indicatedArticles(article)
|
||
return articles.anyArticleIsReadAndCanMarkUnread()
|
||
}
|
||
|
||
func markIndicatedArticlesAsUnread(_ article: Article) {
|
||
let articles = indicatedArticles(article)
|
||
markArticlesWithUndo(articles, statusKey: .read, flag: false)
|
||
}
|
||
|
||
func markSelectedArticlesAsUnread() {
|
||
markArticlesWithUndo(selectedArticles, statusKey: .read, flag: false)
|
||
}
|
||
|
||
func canMarkAboveAsRead(_ article: Article) -> Bool {
|
||
let article = indicatedAboveArticle(article)
|
||
return articles.articlesAbove(article: article).canMarkAllAsRead()
|
||
}
|
||
|
||
func markAboveAsRead(_ article: Article) {
|
||
let article = indicatedAboveArticle(article)
|
||
let articlesToMark = articles.articlesAbove(article: article)
|
||
guard !articlesToMark.isEmpty else { return }
|
||
markArticlesWithUndo(articlesToMark, statusKey: .read, flag: true)
|
||
}
|
||
|
||
func canMarkBelowAsRead(_ article: Article) -> Bool {
|
||
let article = indicatedBelowArticle(article)
|
||
return articles.articlesBelow(article: article).canMarkAllAsRead()
|
||
}
|
||
|
||
func markBelowAsRead(_ article: Article) {
|
||
let article = indicatedBelowArticle(article)
|
||
let articlesToMark = articles.articlesBelow(article: article)
|
||
guard !articlesToMark.isEmpty else { return }
|
||
markArticlesWithUndo(articlesToMark, statusKey: .read, flag: true)
|
||
}
|
||
|
||
func canMarkAllAsReadInFeed(_ feed: Feed) -> Bool {
|
||
guard let articlesSet = try? feed.fetchArticles() else {
|
||
return false
|
||
}
|
||
return Array(articlesSet).canMarkAllAsRead()
|
||
}
|
||
|
||
func markAllAsReadInFeed(_ feed: Feed) {
|
||
guard let articlesSet = try? feed.fetchArticles() else { return }
|
||
let articlesToMark = Array(articlesSet)
|
||
markArticlesWithUndo(articlesToMark, statusKey: .read, flag: true)
|
||
}
|
||
|
||
func canMarkAllAsRead() -> Bool {
|
||
return articles.canMarkAllAsRead()
|
||
}
|
||
|
||
func markAllAsRead() {
|
||
markArticlesWithUndo(articles, statusKey: .read, flag: true)
|
||
}
|
||
|
||
func toggleStarredStatusForSelectedArticles() {
|
||
guard !selectedArticles.isEmpty else {
|
||
return
|
||
}
|
||
if selectedArticles.anyArticleIsUnstarred() {
|
||
markSelectedArticlesAsStarred()
|
||
} else {
|
||
markSelectedArticlesAsUnstarred()
|
||
}
|
||
}
|
||
|
||
func canMarkIndicatedArticlesAsStarred(_ article: Article) -> Bool {
|
||
let articles = indicatedArticles(article)
|
||
return articles.anyArticleIsUnstarred()
|
||
}
|
||
|
||
func markIndicatedArticlesAsStarred(_ article: Article) {
|
||
let articles = indicatedArticles(article)
|
||
markArticlesWithUndo(articles, statusKey: .starred, flag: true)
|
||
}
|
||
|
||
func markSelectedArticlesAsStarred() {
|
||
markArticlesWithUndo(selectedArticles, statusKey: .starred, flag: true)
|
||
}
|
||
|
||
func canMarkIndicatedArticlesAsUnstarred(_ article: Article) -> Bool {
|
||
let articles = indicatedArticles(article)
|
||
return articles.anyArticleIsStarred()
|
||
}
|
||
|
||
func markIndicatedArticlesAsUnstarred(_ article: Article) {
|
||
let articles = indicatedArticles(article)
|
||
markArticlesWithUndo(articles, statusKey: .starred, flag: false)
|
||
}
|
||
|
||
func markSelectedArticlesAsUnstarred() {
|
||
markArticlesWithUndo(selectedArticles, statusKey: .starred, flag: false)
|
||
}
|
||
|
||
func canOpenIndicatedArticleInBrowser(_ article: Article) -> Bool {
|
||
guard indicatedArticles(article).count == 1 else { return false }
|
||
return article.preferredLink != nil
|
||
}
|
||
|
||
func openIndicatedArticleInBrowser(_ article: Article) {
|
||
guard let link = article.preferredLink else { return }
|
||
|
||
#if os(macOS)
|
||
Browser.open(link, invertPreference: NSApp.currentEvent?.modifierFlags.contains(.shift) ?? false)
|
||
#else
|
||
guard let url = URL(string: link) else { return }
|
||
UIApplication.shared.open(url, options: [:])
|
||
#endif
|
||
}
|
||
|
||
func openSelectedArticleInBrowser() {
|
||
guard let article = selectedArticles.first else { return }
|
||
openIndicatedArticleInBrowser(article)
|
||
}
|
||
|
||
func articleFor(_ articleID: String) -> Article? {
|
||
return idToArticleDictionary[articleID]
|
||
}
|
||
|
||
func findPrevArticle(_ article: Article) -> Article? {
|
||
guard let index = articles.firstIndex(of: article), index > 0 else {
|
||
return nil
|
||
}
|
||
return articles[index - 1]
|
||
}
|
||
|
||
func findNextArticle(_ article: Article) -> Article? {
|
||
guard let index = articles.firstIndex(of: article), index + 1 != articles.count else {
|
||
return nil
|
||
}
|
||
return articles[index + 1]
|
||
}
|
||
|
||
func selectArticle(_ article: Article) {
|
||
// TODO: Implement me!
|
||
}
|
||
|
||
}
|
||
|
||
// MARK: Private
|
||
|
||
private extension TimelineModel {
|
||
|
||
func indicatedArticles(_ article: Article) -> [Article] {
|
||
if selectedArticles.contains(article) {
|
||
return selectedArticles
|
||
} else {
|
||
return [article]
|
||
}
|
||
}
|
||
|
||
func indicatedAboveArticle(_ article: Article) -> Article {
|
||
if selectedArticles.contains(article) {
|
||
return selectedArticles.first!
|
||
} else {
|
||
return article
|
||
}
|
||
}
|
||
|
||
func indicatedBelowArticle(_ article: Article) -> Article {
|
||
if selectedArticles.contains(article) {
|
||
return selectedArticles.last!
|
||
} else {
|
||
return article
|
||
}
|
||
}
|
||
|
||
func markArticlesWithUndo(_ articles: [Article], statusKey: ArticleStatus.Key, flag: Bool) {
|
||
guard let undoManager = undoManager, let markReadCommand = MarkStatusCommand(initialArticles: articles, statusKey: statusKey, flag: flag, undoManager: undoManager) else {
|
||
return
|
||
}
|
||
runCommand(markReadCommand)
|
||
}
|
||
|
||
// MARK: Timeline Management
|
||
|
||
func resetReadFilter() {
|
||
guard feeds.count == 1, let timelineFeed = feeds.first else {
|
||
isReadFiltered = nil
|
||
return
|
||
}
|
||
|
||
guard timelineFeed.defaultReadFilterType != .alwaysRead else {
|
||
isReadFiltered = nil
|
||
return
|
||
}
|
||
|
||
if let feedID = timelineFeed.feedID, let readFilterEnabled = readFilterEnabledTable[feedID] {
|
||
isReadFiltered = readFilterEnabled
|
||
} else {
|
||
isReadFiltered = timelineFeed.defaultReadFilterType == .read
|
||
}
|
||
}
|
||
|
||
func sortParametersDidChange() {
|
||
performBlockAndRestoreSelection {
|
||
articles = articles.sortedByDate(sortDirection ? .orderedDescending : .orderedAscending, groupByFeed: groupByFeed)
|
||
rebuildTimelineItems()
|
||
}
|
||
}
|
||
|
||
func performBlockAndRestoreSelection(_ block: (() -> Void)) {
|
||
// let savedSelection = selectedArticleIDs()
|
||
block()
|
||
// restoreSelection(savedSelection)
|
||
}
|
||
|
||
func rebuildArticleDictionaries() {
|
||
var idDictionary = [String: Article]()
|
||
articles.forEach { article in
|
||
idDictionary[article.articleID] = article
|
||
}
|
||
_idToArticleDictionary = idDictionary
|
||
articleDictionaryNeedsUpdate = false
|
||
}
|
||
|
||
func rebuildTimelineItemDictionaries() {
|
||
var idDictionary = [String: Int]()
|
||
for (index, timelineItem) in timelineItems.enumerated() {
|
||
idDictionary[timelineItem.article.articleID] = index
|
||
}
|
||
_idToTimelineItemDictionary = idDictionary
|
||
timelineItemDictionaryNeedsUpdate = false
|
||
}
|
||
|
||
// MARK: Article Fetching
|
||
|
||
func fetchArticles() {
|
||
guard !feeds.isEmpty else {
|
||
nameForDisplay = ""
|
||
replaceArticles(with: Set<Article>())
|
||
return
|
||
}
|
||
|
||
if feeds.count == 1 {
|
||
nameForDisplay = feeds.first!.nameForDisplay
|
||
} else {
|
||
nameForDisplay = NSLocalizedString("Multiple", comment: "Multiple Feeds")
|
||
}
|
||
|
||
resetReadFilter()
|
||
fetchAndReplaceArticlesAsync()
|
||
}
|
||
|
||
func fetchAndReplaceArticlesAsync() {
|
||
var fetchers = feeds as [ArticleFetcher]
|
||
if let fetcher = exceptionArticleFetcher {
|
||
fetchers.append(fetcher)
|
||
exceptionArticleFetcher = nil
|
||
}
|
||
|
||
fetchUnsortedArticlesAsync(for: fetchers) { [weak self] (articles) in
|
||
self?.replaceArticles(with: articles)
|
||
}
|
||
}
|
||
|
||
func cancelPendingAsyncFetches() {
|
||
fetchSerialNumber += 1
|
||
fetchRequestQueue.cancelAllRequests()
|
||
}
|
||
|
||
func fetchUnsortedArticlesAsync(for representedObjects: [Any], completion: @escaping ArticleSetBlock) {
|
||
// The callback will *not* be called if the fetch is no longer relevant — that is,
|
||
// if it’s been superseded by a newer fetch, or the timeline was emptied, etc., it won’t get called.
|
||
precondition(Thread.isMainThread)
|
||
cancelPendingAsyncFetches()
|
||
|
||
let filtered = isReadFiltered ?? false
|
||
let fetchOperation = FetchRequestOperation(id: fetchSerialNumber, readFilter: filtered, representedObjects: representedObjects) { [weak self] (articles, operation) in
|
||
precondition(Thread.isMainThread)
|
||
guard !operation.isCanceled, let strongSelf = self, operation.id == strongSelf.fetchSerialNumber else {
|
||
return
|
||
}
|
||
completion(articles)
|
||
}
|
||
fetchRequestQueue.add(fetchOperation)
|
||
}
|
||
|
||
func replaceArticles(with unsortedArticles: Set<Article>) {
|
||
articles = Array(unsortedArticles).sortedByDate(sortDirection ? .orderedDescending : .orderedAscending, groupByFeed: groupByFeed)
|
||
rebuildTimelineItems()
|
||
|
||
selectedArticleIDs = Set<String>()
|
||
selectedArticleID = nil
|
||
// TODO: Update unread counts and other item done in didSet on AppKit
|
||
}
|
||
|
||
func rebuildTimelineItems() {
|
||
timelineItems = articles.map { TimelineItem(article: $0) }
|
||
}
|
||
|
||
}
|