NetNewsWire/Evergreen/MainWindow/Timeline/Cell/TimelineCellData.swift

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//
// TimelineCellData.swift
// Evergreen
//
// Created by Brent Simmons on 2/6/16.
// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
//
import Cocoa
import Data
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var attributedTitleCache = [String: NSAttributedString]()
var attributedDateCache = [String: NSAttributedString]()
var attributedFeedNameCache = [String: NSAttributedString]()
struct TimelineCellData {
let title: String
let text: String
let attributedTitle: NSAttributedString //title + text
let dateString: String
let attributedDateString: NSAttributedString
let feedName: String
let attributedFeedName: NSAttributedString
let showFeedName: Bool
let favicon: NSImage?
let read: Bool
init(article: Article, appearance: TimelineCellAppearance, showFeedName: Bool) {
self.title = timelineTruncatedTitle(article)
self.text = timelineTruncatedSummary(article)
let attributedTitleCacheKey = "_title: " + self.title + "_text: " + self.text
if let s = attributedTitleCache[attributedTitleCacheKey] {
self.attributedTitle = s
}
else {
self.attributedTitle = attributedTitleString(title, text, appearance)
attributedTitleCache[attributedTitleCacheKey] = self.attributedTitle
}
self.dateString = timelineDateString(article.logicalDatePublished)
if let s = attributedDateCache[self.dateString] {
self.attributedDateString = s
}
else {
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self.attributedDateString = NSAttributedString(string: self.dateString, attributes: [NSAttributedStringKey.foregroundColor: appearance.dateColor, NSAttributedStringKey.font: appearance.dateFont])
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attributedDateCache[self.dateString] = self.attributedDateString
}
if let feed = article.feed {
self.feedName = timelineTruncatedFeedName(feed)
}
else {
self.feedName = ""
}
if let s = attributedFeedNameCache[self.dateString] {
self.attributedFeedName = s
}
else {
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self.attributedFeedName = NSAttributedString(string: self.feedName, attributes: [NSAttributedStringKey.foregroundColor: appearance.feedNameColor, NSAttributedStringKey.font: appearance.feedNameFont])
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attributedFeedNameCache[self.feedName] = self.attributedFeedName
}
self.showFeedName = showFeedName
self.favicon = nil
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self.read = article.status.read
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}
init() { //Empty
self.title = ""
self.attributedTitle = NSAttributedString(string: "")
self.text = ""
self.dateString = ""
self.attributedDateString = NSAttributedString(string: "")
self.feedName = ""
self.attributedFeedName = NSAttributedString(string: "")
self.showFeedName = false
self.favicon = nil
self.read = true
}
static func emptyCache() {
attributedTitleCache = [String: NSAttributedString]()
attributedDateCache = [String: NSAttributedString]()
attributedFeedNameCache = [String: NSAttributedString]()
}
}
let emptyCellData = TimelineCellData()
private func attributedTitleString(_ title: String, _ text: String, _ appearance: TimelineCellAppearance) -> NSAttributedString {
if !title.isEmpty && !text.isEmpty {
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let titleMutable = NSMutableAttributedString(string: title, attributes: [NSAttributedStringKey.foregroundColor: appearance.titleColor, NSAttributedStringKey.font: appearance.titleFont])
let attributedText = NSAttributedString(string: "\n" + text, attributes: [NSAttributedStringKey.foregroundColor: appearance.textColor, NSAttributedStringKey.font: appearance.textFont])
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titleMutable.append(attributedText)
return titleMutable
}
if !title.isEmpty && text.isEmpty {
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return NSAttributedString(string: title, attributes: [NSAttributedStringKey.foregroundColor: appearance.titleColor, NSAttributedStringKey.font: appearance.titleFont])
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}
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return NSAttributedString(string: text, attributes: [NSAttributedStringKey.foregroundColor: appearance.textColor, NSAttributedStringKey.font: appearance.textFont])
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}