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Change status updates be combine code instead of selectors

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This commit is contained in:
Maurice Parker 2020-07-19 11:15:02 -05:00
parent b25c8634ca
commit 1b5c9da2d7
1 changed files with 10 additions and 20 deletions
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28
Multiplatform/Shared/SceneModel.swift
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@ -48,15 +48,7 @@ final class SceneModel: ObservableObject {
self.articleIconSchemeHandler = ArticleIconSchemeHandler(sceneModel: self) self.articleIconSchemeHandler = ArticleIconSchemeHandler(sceneModel: self)
self.webViewProvider = WebViewProvider(articleIconSchemeHandler: self.articleIconSchemeHandler!) self.webViewProvider = WebViewProvider(articleIconSchemeHandler: self.articleIconSchemeHandler!)
NotificationCenter.default.addObserver(self, selector: #selector(statusesDidChange(_:)), name: .StatusesDidChange, object: nil) subscribeToToolbarChangeEvents()
timelineModel.$articles.sink { [weak self] articles in
self?.updateMarkAllAsReadButtonsState(articles: articles)
}.store(in: &cancellables)
timelineModel.$selectedArticles.sink { [weak self] articles in
self?.updateArticleButtonsState(selectedArticles: articles)
}.store(in: &cancellables)
} }
// MARK: Article Management API // MARK: Article Management API
@ -126,17 +118,15 @@ extension SceneModel: TimelineModelDelegate {
private extension SceneModel { private extension SceneModel {
// MARK: Notifications // MARK: Subscriptions
func subscribeToToolbarChangeEvents() {
let combinedPublisher = timelineModel.$articles.combineLatest(timelineModel.$selectedArticles,
NotificationCenter.default.publisher(for: .StatusesDidChange))
@objc func statusesDidChange(_ note: Notification) { combinedPublisher.sink { [weak self] (articles, selectedArticles, _) in
guard let articleIDs = note.userInfo?[Account.UserInfoKey.articleIDs] as? Set<String> else { self?.updateMarkAllAsReadButtonsState(articles: articles)
return self?.updateArticleButtonsState(selectedArticles: selectedArticles)
} }.store(in: &cancellables)
updateMarkAllAsReadButtonsState(articles: timelineModel.articles)
let selectedArticleIDs = timelineModel.selectedArticles.map { $0.articleID }
if !articleIDs.intersection(selectedArticleIDs).isEmpty {
updateArticleButtonsState(selectedArticles: timelineModel.selectedArticles)
}
} }
// MARK: Button State Updates // MARK: Button State Updates