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64 lines
1.6 KiB
Swift
64 lines
1.6 KiB
Swift
//
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// MarkReadOrUnreadCommand.swift
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// Evergreen
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//
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// Created by Brent Simmons on 10/26/17.
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// Copyright © 2017 Ranchero Software. All rights reserved.
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//
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import Foundation
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import RSCore
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import Data
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final class MarkReadOrUnreadCommand: UndoableCommand {
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static private let markReadActionName = NSLocalizedString("Mark Read", comment: "command")
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static private let markUnreadActionName = NSLocalizedString("Mark Unread", comment: "command")
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let undoActionName: String
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let redoActionName: String
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let articles: Set<Article>
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let undoManager: UndoManager
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let markingRead: Bool
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init?(initialArticles: [Article], markingRead: Bool, undoManager: UndoManager) {
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// Filter out articles already read.
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let articlesToMark = initialArticles.filter { markingRead ? !$0.status.read : $0.status.read }
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if articlesToMark.isEmpty {
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return nil
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}
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self.articles = Set(articlesToMark)
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self.markingRead = markingRead
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self.undoManager = undoManager
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if markingRead {
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self.undoActionName = MarkReadOrUnreadCommand.markReadActionName
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self.redoActionName = MarkReadOrUnreadCommand.markReadActionName
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}
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else {
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self.undoActionName = MarkReadOrUnreadCommand.markUnreadActionName
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self.redoActionName = MarkReadOrUnreadCommand.markUnreadActionName
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}
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}
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func perform() {
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mark(read: markingRead)
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registerUndo()
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}
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func undo() {
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mark(read: !markingRead)
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registerRedo()
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}
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}
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private extension MarkReadOrUnreadCommand {
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func mark(read: Bool) {
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markArticles(articles, statusKey: .read, flag: read)
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}
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}
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