NetNewsWire/Evergreen/MainWindow/Timeline/TimelineViewController.swift
Brent Simmons befc5efc77 Show feed names and favicons in timeline when appropriate.
I don’t quite like this. Maybe avatars are better.
2017-12-30 12:45:10 -08:00

555 lines
15 KiB
Swift

//
// TimelineViewController.swift
// Evergreen
//
// Created by Brent Simmons on 7/26/15.
// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
//
import Foundation
import RSCore
import RSTextDrawing
import Data
import Account
class TimelineViewController: NSViewController, UndoableCommandRunner {
@IBOutlet var tableView: TimelineTableView!
var selectedArticles: [Article] {
get {
return Array(articles.articlesForIndexes(tableView.selectedRowIndexes))
}
}
var hasAtLeastOneSelectedArticle: Bool {
get {
return tableView.selectedRow != -1
}
}
var undoableCommands = [UndoableCommand]()
private var cellAppearance: TimelineCellAppearance!
private var showFeedNames = false {
didSet {
if showFeedNames != oldValue {
tableView.rowHeight = currentRowHeight
}
}
}
private var rowHeightWithFeedName: CGFloat = 0.0
private var rowHeightWithoutFeedName: CGFloat = 0.0
private var currentRowHeight: CGFloat {
return showFeedNames ? rowHeightWithFeedName : rowHeightWithoutFeedName
}
private var didRegisterForNotifications = false
private let timelineFontSizeKVOKey = "values.{AppDefaults.Key.timelineFontSize}"
private var articles = ArticleArray() {
didSet {
if articles != oldValue {
clearUndoableCommands()
tableView.reloadData()
}
}
}
private var fontSize: FontSize = AppDefaults.shared.timelineFontSize {
didSet {
fontSizeDidChange()
}
}
private var representedObjects: [AnyObject]? {
didSet {
if !representedObjectArraysAreEqual(oldValue, representedObjects) {
if let representedObjects = representedObjects {
if representedObjects.count == 1 && representedObjects.first is Feed {
showFeedNames = false
}
else {
showFeedNames = true
}
}
else {
showFeedNames = false
}
postTimelineSelectionDidChangeNotification(nil)
fetchArticles()
if articles.count > 0 {
tableView.scrollRowToVisible(0)
}
}
}
}
private var oneSelectedArticle: Article? {
get {
return selectedArticles.count == 1 ? selectedArticles.first : nil
}
}
override func viewDidLoad() {
cellAppearance = TimelineCellAppearance(theme: appDelegate.currentTheme, fontSize: fontSize)
updateRowHeights()
tableView.rowHeight = currentRowHeight
tableView.target = self
tableView.doubleAction = #selector(openArticleInBrowser(_:))
tableView.setDraggingSourceOperationMask(.copy, forLocal: false)
if !didRegisterForNotifications {
NotificationCenter.default.addObserver(self, selector: #selector(sidebarSelectionDidChange(_:)), name: .SidebarSelectionDidChange, object: nil)
NotificationCenter.default.addObserver(self, selector: #selector(statusesDidChange(_:)), name: .StatusesDidChange, object: nil)
NSUserDefaultsController.shared.addObserver(self, forKeyPath: timelineFontSizeKVOKey, options: NSKeyValueObservingOptions(rawValue: 0), context: nil)
didRegisterForNotifications = true
}
}
// MARK: KVO
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if let keyPath = keyPath {
switch (keyPath) {
case timelineFontSizeKVOKey:
fontSizeInDefaultsDidChange()
return
default:
break
}
}
super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
}
// MARK: Appearance Change
private func fontSizeDidChange() {
cellAppearance = TimelineCellAppearance(theme: appDelegate.currentTheme, fontSize: fontSize)
updateRowHeights()
if tableView.rowHeight != currentRowHeight {
tableView.rowHeight = currentRowHeight
tableView.reloadData()
}
}
// MARK: - API
func markAllAsRead() {
guard let undoManager = undoManager, let markReadCommand = MarkReadOrUnreadCommand(initialArticles: articles, markingRead: true, undoManager: undoManager) else {
return
}
runCommand(markReadCommand)
}
func canMarkAllAsRead() -> Bool {
return articles.canMarkAllAsRead()
}
func canMarkSelectedArticlesAsRead() -> Bool {
return selectedArticles.canMarkAllAsRead()
}
// MARK: - Actions
@objc func openArticleInBrowser(_ sender: AnyObject) {
if let link = oneSelectedArticle?.preferredLink {
Browser.open(link)
}
}
@IBAction func toggleStatusOfSelectedArticles(_ sender: AnyObject) {
guard !selectedArticles.isEmpty else {
return
}
let articles = selectedArticles
let status = articles.first!.status
let markAsRead = !status.read
if markAsRead {
markSelectedArticlesAsRead(sender)
}
else {
markSelectedArticlesAsUnread(sender)
}
}
@IBAction func markSelectedArticlesAsRead(_ sender: Any?) {
guard let undoManager = undoManager, let markReadCommand = MarkReadOrUnreadCommand(initialArticles: selectedArticles, markingRead: true, undoManager: undoManager) else {
return
}
runCommand(markReadCommand)
}
@IBAction func markSelectedArticlesAsUnread(_ sender: Any?) {
guard let undoManager = undoManager, let markUnreadCommand = MarkReadOrUnreadCommand(initialArticles: selectedArticles, markingRead: false, undoManager: undoManager) else {
return
}
runCommand(markUnreadCommand)
}
func markOlderArticlesAsRead() {
// Mark articles the same age or older than the selected article(s) as read.
var cutoffDate: Date? = nil
for article in selectedArticles {
if cutoffDate == nil {
cutoffDate = article.logicalDatePublished
}
else if cutoffDate! < article.logicalDatePublished {
cutoffDate = article.logicalDatePublished
}
}
if cutoffDate == nil {
return
}
let articlesToMark = articles.filter { $0.logicalDatePublished <= cutoffDate! }
if articlesToMark.isEmpty {
return
}
guard let undoManager = undoManager, let markReadCommand = MarkReadOrUnreadCommand(initialArticles: articlesToMark, markingRead: true, undoManager: undoManager) else {
return
}
runCommand(markReadCommand)
}
func canMarkOlderArticlesAsRead() -> Bool {
return !selectedArticles.isEmpty
}
// MARK: - Navigation
func goToNextUnread() {
guard let ix = indexOfNextUnreadArticle() else {
return
}
tableView.rs_selectRow(ix)
tableView.scrollTo(row: ix)
}
func canGoToNextUnread() -> Bool {
guard let _ = indexOfNextUnreadArticle() else {
return false
}
return true
}
func indexOfNextUnreadArticle() -> Int? {
return articles.rowOfNextUnreadArticle(tableView.selectedRow)
}
func focus() {
guard let window = tableView.window else {
return
}
window.makeFirstResponderUnlessDescendantIsFirstResponder(tableView)
if !hasAtLeastOneSelectedArticle && articles.count > 0 {
tableView.rs_selectRowAndScrollToVisible(0)
}
}
// MARK: - Notifications
@objc func sidebarSelectionDidChange(_ notification: Notification) {
guard let userInfo = notification.userInfo else {
return
}
guard let sidebarView = userInfo[UserInfoKey.view] as? NSView, sidebarView.window === tableView.window else {
return
}
if let objects = userInfo[UserInfoKey.objects] as? [AnyObject] {
representedObjects = objects
}
else {
representedObjects = nil
}
}
@objc func statusesDidChange(_ note: Notification) {
guard let articles = note.userInfo?[Account.UserInfoKey.articles] as? Set<Article> else {
return
}
reloadCellsForArticleIDs(articles.articleIDs())
}
func fontSizeInDefaultsDidChange() {
TimelineCellData.emptyCache()
RSSingleLineRenderer.emptyCache()
RSMultiLineRenderer.emptyCache()
let updatedFontSize = AppDefaults.shared.timelineFontSize
if updatedFontSize != self.fontSize {
self.fontSize = updatedFontSize
}
}
// MARK: - Reloading Data
private func cellForRowView(_ rowView: NSView) -> NSView? {
for oneView in rowView.subviews where oneView is TimelineTableCellView {
return oneView
}
return nil
}
private func reloadCellsForArticles(_ articles: [Article]) {
reloadCellsForArticleIDs(Set(articles.articleIDs()))
}
private func reloadCellsForArticleIDs(_ articleIDs: Set<String>) {
let indexes = articles.indexesForArticleIDs(articleIDs)
tableView.reloadData(forRowIndexes: indexes, columnIndexes: NSIndexSet(index: 0) as IndexSet)
}
// MARK: - Cell Configuring
private func calculateRowHeight(showingFeedNames: Bool) -> CGFloat {
let longTitle = "But I must explain to you how all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness. No one rejects, dislikes, or avoids pleasure itself, because it is pleasure, but because those who do not know how to pursue pleasure rationally encounter consequences that are extremely painful. Nor again is there anyone who loves or pursues or desires to obtain pain of itself, because it is pain, but because occasionally circumstances occur in which toil and pain can procure him some great pleasure. To take a trivial example, which of us ever undertakes laborious physical exercise, except to obtain some advantage from it? But who has any right to find fault with a man who chooses to enjoy a pleasure that has no annoying consequences, or one who avoids a pain that produces no resultant pleasure?"
let prototypeID = "prototype"
let status = ArticleStatus(articleID: prototypeID, read: false, starred: false, userDeleted: false, dateArrived: Date())
let prototypeArticle = Article(accountID: prototypeID, articleID: prototypeID, feedID: prototypeID, uniqueID: prototypeID, title: longTitle, contentHTML: nil, contentText: nil, url: nil, externalURL: nil, summary: nil, imageURL: nil, bannerImageURL: nil, datePublished: nil, dateModified: nil, authors: nil, attachments: nil, status: status)
let prototypeCellData = TimelineCellData(article: prototypeArticle, appearance: cellAppearance, showFeedName: showingFeedNames, feedName: "Prototype Feed Name", favicon: nil, avatar: nil, featuredImage: nil)
let height = timelineCellHeight(100, cellData: prototypeCellData, appearance: cellAppearance)
return height
}
private func updateRowHeights() {
rowHeightWithFeedName = calculateRowHeight(showingFeedNames: true)
rowHeightWithoutFeedName = calculateRowHeight(showingFeedNames: false)
}
}
// MARK: - NSTableViewDataSource
extension TimelineViewController: NSTableViewDataSource {
func numberOfRows(in tableView: NSTableView) -> Int {
return articles.count
}
func tableView(_ tableView: NSTableView, objectValueFor tableColumn: NSTableColumn?, row: Int) -> Any? {
return articles.articleAtRow(row) ?? nil
}
func tableView(_ tableView: NSTableView, pasteboardWriterForRow row: Int) -> NSPasteboardWriting? {
guard let article = articles.articleAtRow(row) else {
return nil
}
return ArticlePasteboardWriter(article: article)
}
}
// MARK: - NSTableViewDelegate
extension TimelineViewController: NSTableViewDelegate {
func tableView(_ tableView: NSTableView, rowViewForRow row: Int) -> NSTableRowView? {
let rowView: TimelineTableRowView = tableView.makeView(withIdentifier: NSUserInterfaceItemIdentifier(rawValue: "timelineRow"), owner: self) as! TimelineTableRowView
rowView.cellAppearance = cellAppearance
return rowView
}
func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
let cell: TimelineTableCellView = tableView.makeView(withIdentifier: NSUserInterfaceItemIdentifier(rawValue: "timelineCell"), owner: self) as! TimelineTableCellView
cell.cellAppearance = cellAppearance
if let article = articles.articleAtRow(row) {
configureTimelineCell(cell, article: article)
}
else {
makeTimelineCellEmpty(cell)
}
return cell
}
func tableViewSelectionDidChange(_ notification: Notification) {
tableView.redrawGrid()
let selectedRow = tableView.selectedRow
if selectedRow < 0 || selectedRow == NSNotFound || tableView.numberOfSelectedRows != 1 {
postTimelineSelectionDidChangeNotification(nil)
return
}
if let selectedArticle = articles.articleAtRow(selectedRow) {
if (!selectedArticle.status.read) {
markArticles(Set([selectedArticle]), statusKey: .read, flag: true)
}
postTimelineSelectionDidChangeNotification(selectedArticle)
}
else {
postTimelineSelectionDidChangeNotification(nil)
}
}
private func postTimelineSelectionDidChangeNotification(_ selectedArticle: Article?) {
var userInfo = UserInfoDictionary()
if let article = selectedArticle {
userInfo[UserInfoKey.article] = article
}
userInfo[UserInfoKey.view] = tableView
NotificationCenter.default.post(name: .TimelineSelectionDidChange, object: self, userInfo: userInfo)
}
private func configureTimelineCell(_ cell: TimelineTableCellView, article: Article) {
cell.objectValue = article
let favicon = showFeedNames ? article.feed?.smallIcon : nil
let avatar = avatarFor(article)
let featuredImage = featuredImageFor(article)
cell.cellData = TimelineCellData(article: article, appearance: cellAppearance, showFeedName: showFeedNames, feedName: article.feed?.nameForDisplay, favicon: favicon, avatar: avatar, featuredImage: featuredImage)
}
private func avatarFor(_ article: Article) -> NSImage? {
if let authors = article.authors {
for author in authors {
if let image = avatarForAuthor(author) {
return image
}
}
}
guard let feed = article.feed else {
return nil
}
// TODO: make Feed know about its authors.
// https://github.com/brentsimmons/Evergreen/issues/212
return appDelegate.feedIconDownloader.icon(for: feed)
}
private func avatarForAuthor(_ author: Author) -> NSImage? {
return appDelegate.authorAvatarDownloader.image(for: author)
}
private func featuredImageFor(_ article: Article) -> NSImage? {
if let url = article.imageURL {
return appDelegate.imageDownloader.image(for: url)
}
return nil
}
private func makeTimelineCellEmpty(_ cell: TimelineTableCellView) {
cell.objectValue = nil
cell.cellData = emptyCellData
}
}
// MARK: - Private
private extension TimelineViewController {
func emptyTheTimeline() {
if !articles.isEmpty {
articles = [Article]()
}
}
// MARK: Fetching Articles
func fetchArticles() {
guard let representedObjects = representedObjects else {
emptyTheTimeline()
return
}
var fetchedArticles = Set<Article>()
for object in representedObjects {
if let feed = object as? Feed {
fetchedArticles.formUnion(feed.fetchArticles())
}
else if let folder = object as? Folder {
fetchedArticles.formUnion(folder.fetchArticles())
}
}
let sortedArticles = Array(fetchedArticles).sortedByDate()
if articles != sortedArticles {
articles = sortedArticles
}
}
func representedObjectArraysAreEqual(_ objects1: [AnyObject]?, _ objects2: [AnyObject]?) -> Bool {
if objects1 == nil && objects2 == nil {
return true
}
guard let objects1 = objects1, let objects2 = objects2 else {
return false
}
if objects1.count != objects2.count {
return false
}
var ix = 0
for oneObject in objects1 {
if oneObject !== objects2[ix] {
return false
}
ix += 1
}
return true
}
}