626 lines
16 KiB
Swift
626 lines
16 KiB
Swift
//
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// TimelineViewController.swift
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// Evergreen
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//
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// Created by Brent Simmons on 7/26/15.
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// Copyright © 2015 Ranchero Software, LLC. All rights reserved.
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//
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import Foundation
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import RSCore
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import RSTextDrawing
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import RSTree
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import DataModel
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import LocalAccount
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let timelineFontSizeKVOKey = "values." + TimelineFontSizeKey
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class TimelineViewController: NSViewController, NSTableViewDelegate, NSTableViewDataSource, KeyboardDelegate {
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@IBOutlet var tableView: TimelineTableView!
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var didRegisterForNotifications = false
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var fontSize: FontSize = timelineFontSize() {
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didSet {
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fontSizeDidChange()
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}
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}
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var cellAppearance: TimelineCellAppearance!
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private var articles = [Article]() {
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didSet {
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tableView.reloadData()
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}
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}
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private var representedObjects: [AnyObject]? {
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didSet {
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if !representedObjectArraysAreEqual(oldValue, representedObjects) {
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fetchArticles()
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if articles.count > 0 {
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tableView.scrollRowToVisible(0)
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}
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}
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}
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}
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private var showFeedNames: Bool {
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// if let _ = node?.representedObject as? Feed {
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return false
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// }
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// return true
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}
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var selectedArticles: [Article] {
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get {
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return articlesForIndexes(tableView.selectedRowIndexes)
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}
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}
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private var oneSelectedArticle: Article? {
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get {
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return selectedArticles.count == 1 ? selectedArticles.first : nil
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}
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}
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override func viewDidLoad() {
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cellAppearance = TimelineCellAppearance(theme: currentTheme, fontSize: fontSize)
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tableView.rowHeight = calculateRowHeight()
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tableView.target = self
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tableView.doubleAction = #selector(openArticleInBrowser(_:))
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tableView.keyboardDelegate = self
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if !didRegisterForNotifications {
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NotificationCenter.default.addObserver(self, selector: #selector(sidebarSelectionDidChange(_:)), name: .SidebarSelectionDidChange, object: nil)
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NotificationCenter.default.addObserver(self, selector: #selector(articleStatusesDidChange(_:)), name: .ArticleStatusesDidChange, object: nil)
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NSUserDefaultsController.shared().addObserver(self, forKeyPath:timelineFontSizeKVOKey, options: NSKeyValueObservingOptions(rawValue: 0), context: nil)
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didRegisterForNotifications = true
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}
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}
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// MARK: KVO
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override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
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if let keyPath = keyPath {
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switch (keyPath) {
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case timelineFontSizeKVOKey:
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fontSizeInDefaultsDidChange()
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return
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default:
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break
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}
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}
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super.observeValue(forKeyPath: keyPath, of: object, change: change, context: context)
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}
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// MARK: Appearance Change
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private func fontSizeDidChange() {
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cellAppearance = TimelineCellAppearance(theme: currentTheme, fontSize: fontSize)
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let updatedRowHeight = calculateRowHeight()
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if tableView.rowHeight != updatedRowHeight {
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tableView.rowHeight = updatedRowHeight
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tableView.reloadData()
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}
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}
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// MARK: API
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func markAllAsRead() {
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if articles.isEmpty {
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return
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}
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let articlesSet = NSMutableSet()
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articlesSet.addObjects(from: articles)
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markArticles(articlesSet, statusKey: .read, flag: true)
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reloadCellsForArticles(articles)
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}
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// MARK: Actions
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func openArticleInBrowser(_ sender: AnyObject) {
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guard let article = oneSelectedArticle else {
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return
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}
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if let link = preferredLink(for: article) {
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openInBrowser(link)
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}
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}
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@IBAction func toggleStatusOfSelectedArticles(_ sender: AnyObject) {
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guard !selectedArticles.isEmpty else {
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return
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}
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let articles = selectedArticles
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var markAsRead = true
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if articles.first!.status.read {
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markAsRead = false
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}
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markArticles(NSSet(array: articles), statusKey: .read, flag: markAsRead)
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}
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@IBAction func markSelectedArticlesAsRead(_ sender: AnyObject) {
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markArticles(NSSet(array: selectedArticles), statusKey: .read, flag: true)
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}
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@IBAction func markSelectedArticlesAsUnread(_ sender: AnyObject) {
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markArticles(NSSet(array: selectedArticles), statusKey: .read, flag: false)
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}
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// MARK: Navigation
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func goToNextUnread() {
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guard let ix = indexOfNextUnreadArticle() else {
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return
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}
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tableView.rs_selectRow(ix)
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tableView.scrollTo(row: ix)
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// tableView.rs_selectRowAndScrollToVisible(ix)
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}
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func canGoToNextUnread() -> Bool {
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guard let _ = indexOfNextUnreadArticle() else {
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return false
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}
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return true
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}
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func canMarkAllAsRead() -> Bool {
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for oneArticle in articles {
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if !oneArticle.status.read {
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return true
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}
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}
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return false
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}
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func indexOfNextUnreadArticle() -> Int? {
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if articles.isEmpty {
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return nil
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}
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var ix = tableView.selectedRow
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while(true) {
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ix = ix + 1
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if ix >= articles.count {
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break
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}
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let article = articleAtRow(ix)!
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if !article.status.read {
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return ix
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}
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}
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return nil
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}
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// MARK: Notifications
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func sidebarSelectionDidChange(_ note: Notification) {
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let sidebarView = note.userInfo?[viewKey] as! NSView
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if sidebarView.window! === tableView.window {
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representedObjects = note.userInfo?[objectsKey] as? [AnyObject]
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}
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}
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func articleStatusesDidChange(_ note: Notification) {
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guard let articles = note.userInfo?[articlesKey] as? NSSet else {
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return
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}
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reloadCellsForArticles(articles.allObjects as! [Article])
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}
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func fontSizeInDefaultsDidChange() {
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TimelineCellData.emptyCache()
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RSSingleLineRenderer.emptyCache()
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RSMultiLineRenderer.emptyCache()
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let updatedFontSize = timelineFontSize()
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if updatedFontSize != self.fontSize {
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self.fontSize = updatedFontSize
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}
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}
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// MARK: KeyboardDelegate
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func handleKeydownEvent(_ event: NSEvent, sender: AnyObject) -> Bool {
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guard !event.rs_keyIsModified() else {
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return false
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}
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guard let ch = event.rs_unmodifiedCharacterString() else {
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return false
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}
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let hasSelectedArticle = hasAtLeastOneSelectedArticle
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var keyHandled = false
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var shouldOpenInBrowser = false
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switch(ch) {
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case "\n":
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shouldOpenInBrowser = true
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keyHandled = true
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case "\r":
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shouldOpenInBrowser = true
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keyHandled = true
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case "r":
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markSelectedArticlesAsRead(sender)
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keyHandled = true
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case "u":
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markSelectedArticlesAsUnread(sender)
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keyHandled = true
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default:
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keyHandled = false
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}
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if !keyHandled {
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let chUnichar = event.rs_unmodifiedCharacter()
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switch(chUnichar) {
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case keypadEnter:
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shouldOpenInBrowser = true
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keyHandled = true
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default:
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keyHandled = false
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}
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}
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if shouldOpenInBrowser && hasSelectedArticle {
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openArticleInBrowser(self)
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}
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return keyHandled
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}
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// MARK: Reloading Data
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private func cellForRowView(_ rowView: NSView) -> NSView? {
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for oneView in rowView.subviews where oneView is TimelineTableCellView {
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return oneView
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}
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return nil
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}
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private func reloadCellsForArticles(_ articles: [Article]) {
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let indexes = indexesForArticles(articles)
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tableView.reloadData(forRowIndexes: indexes, columnIndexes: NSIndexSet(index: 0) as IndexSet)
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}
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// MARK: Articles
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private func indexesForArticles(_ articles: [Article]) -> IndexSet {
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var indexes = IndexSet()
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articles.forEach { (article) in
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let oneIndex = rowForArticle(article)
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if oneIndex != NSNotFound {
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indexes.insert(oneIndex)
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}
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}
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return indexes
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}
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private func articlesForIndexes(_ indexes: IndexSet) -> [Article] {
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return indexes.flatMap{ (oneIndex) -> Article? in
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return articleAtRow(oneIndex)
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}
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}
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private func articleAtRow(_ row: Int) -> Article? {
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if row < 0 || row == NSNotFound || row > articles.count - 1 {
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return nil
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}
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return articles[row]
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}
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private func rowForArticle(_ article: Article) -> Int {
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if let index = articles.index(where: { (oneArticle) -> Bool in
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return oneArticle === article
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}) {
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return index
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}
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return NSNotFound
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}
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func selectedArticle() -> Article? {
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return articleAtRow(tableView.selectedRow)
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}
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// MARK: Sorting Articles
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private func articleComparator(_ article1: Article, article2: Article) -> Bool {
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return article1.logicalDatePublished.compare(article2.logicalDatePublished) == .orderedDescending
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}
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// MARK: Fetching Articles
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private func fetchArticles() {
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guard let representedObjects = representedObjects else {
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if !articles.isEmpty {
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articles = [Article]()
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}
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return
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}
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var accountsDictionary = [String: [AnyObject]]()
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func addToAccountArray(accountID: String, object: AnyObject) {
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if let accountArray = accountsDictionary[accountID] {
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if !accountArray.contains(where: { $0 === object }) {
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accountsDictionary[accountID] = accountArray + [object]
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}
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}
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else {
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accountsDictionary[accountID] = [object]
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}
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}
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for oneObject in representedObjects {
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if let oneFeed = oneObject as? Feed {
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addToAccountArray(accountID: oneFeed.account.identifier, object: oneFeed)
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}
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else if let oneFolder = oneObject as? Folder, let accountID = oneFolder.account?.identifier {
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addToAccountArray(accountID: accountID, object: oneFolder)
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}
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}
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var fetchedArticles = [Article]()
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for (accountID, objects) in accountsDictionary {
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guard let oneAccount = AccountManager.sharedInstance.existingAccountWithIdentifier(accountID) else {
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continue
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}
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let oneFetchedArticles = oneAccount.fetchArticles(for: objects)
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for oneFetchedArticle in oneFetchedArticles {
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if !fetchedArticles.contains(where: { $0 === oneFetchedArticle }) {
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fetchedArticles += [oneFetchedArticle]
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}
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}
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}
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fetchedArticles.sort(by: articleComparator)
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if !articleArraysAreIdentical(array1: articles, array2: fetchedArticles) {
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articles = fetchedArticles
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}
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}
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// MARK: Cell Configuring
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private func calculateRowHeight() -> CGFloat {
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let prototypeArticle = LocalArticle(account: AccountManager.sharedInstance.localAccount, feedID: "prototype", articleID: "prototype")
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prototypeArticle.title = "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?"
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let prototypeArticleStatus = LocalArticleStatus(articleID: "prototype", read: false, starred: false, userDeleted: false, dateArrived: Date())
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prototypeArticle.status = prototypeArticleStatus
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let prototypeCellData = TimelineCellData(article: prototypeArticle, appearance: cellAppearance, showFeedName: false)
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let height = timelineCellHeight(100, cellData: prototypeCellData, appearance: cellAppearance)
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return height
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}
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private func configureTimelineCell(_ cell: TimelineTableCellView, article: Article) {
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cell.objectValue = article
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cell.cellData = TimelineCellData(article: article, appearance: cellAppearance, showFeedName: showFeedNames)
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}
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private func makeTimelineCellEmpty(_ cell: TimelineTableCellView) {
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cell.objectValue = nil
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cell.cellData = emptyCellData
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}
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// MARK: NSTableViewDataSource
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func numberOfRows(in tableView: NSTableView) -> Int {
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return articles.count
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}
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func tableView(_ tableView: NSTableView, objectValueFor tableColumn: NSTableColumn?, row: Int) -> Any? {
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return articleAtRow(row)
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}
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// MARK: NSTableViewDelegate
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func tableView(_ tableView: NSTableView, rowViewForRow row: Int) -> NSTableRowView? {
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let rowView: TimelineTableRowView = tableView.make(withIdentifier: "timelineRow", owner: self) as! TimelineTableRowView
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rowView.cellAppearance = cellAppearance
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return rowView
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}
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func tableView(_ tableView: NSTableView, viewFor tableColumn: NSTableColumn?, row: Int) -> NSView? {
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let cell: TimelineTableCellView = tableView.make(withIdentifier: "timelineCell", owner: self) as! TimelineTableCellView
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cell.cellAppearance = cellAppearance
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if let article = articleAtRow(row) {
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configureTimelineCell(cell, article: article)
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}
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else {
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makeTimelineCellEmpty(cell)
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}
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return cell
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}
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private func postTimelineSelectionDidChangeNotification(_ selectedArticle: Article?) {
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var userInfo = [String: AnyObject]()
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if let article = selectedArticle {
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userInfo[articleKey] = article
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}
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userInfo[viewKey] = self.tableView
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NotificationCenter.default.post(name: .TimelineSelectionDidChange, object: self, userInfo: userInfo)
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}
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func tableViewSelectionDidChange(_ notification: Notification) {
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tableView.redrawGrid()
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let selectedRow = tableView.selectedRow
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if selectedRow < 0 || selectedRow == NSNotFound || tableView.numberOfSelectedRows != 1 {
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postTimelineSelectionDidChangeNotification(nil)
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return
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}
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if let selectedArticle = articleAtRow(selectedRow) {
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let articleSet = NSSet(array: [selectedArticle])
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if (!selectedArticle.status.read) {
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markArticles(articleSet, statusKey: .read, flag: true)
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}
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postTimelineSelectionDidChangeNotification(selectedArticle)
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}
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else {
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postTimelineSelectionDidChangeNotification(nil)
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}
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}
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func representedObjectArraysAreEqual(_ objects1: [AnyObject]?, _ objects2: [AnyObject]?) -> Bool {
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if objects1 == nil && objects2 == nil {
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return true
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}
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guard let objects1 = objects1, let objects2 = objects2 else {
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return false
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}
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if objects1.count != objects2.count {
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return false
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}
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var ix = 0
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for oneObject in objects1 {
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if oneObject !== objects2[ix] {
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return false
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}
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ix += 1
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}
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return true
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}
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}
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private extension TimelineViewController {
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var hasAtLeastOneSelectedArticle: Bool {
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get {
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return self.tableView.selectedRow != -1
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}
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}
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}
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private extension NSTableView {
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func scrollTo(row: Int) {
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guard let scrollView = self.enclosingScrollView else {
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return
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}
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let documentVisibleRect = scrollView.documentVisibleRect
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let r = rect(ofRow: row)
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if NSContainsRect(documentVisibleRect, r) {
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return
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}
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let rMidY = NSMidY(r)
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var scrollPoint = NSZeroPoint;
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let extraHeight = 150
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scrollPoint.y = floor(rMidY - (documentVisibleRect.size.height / 2.0)) + CGFloat(extraHeight)
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scrollPoint.y = max(scrollPoint.y, 0)
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let maxScrollPointY = frame.size.height - documentVisibleRect.size.height
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scrollPoint.y = min(maxScrollPointY, scrollPoint.y)
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let clipView = scrollView.contentView
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let rClipView = NSMakeRect(scrollPoint.x, scrollPoint.y, NSWidth(clipView.bounds), NSHeight(clipView.bounds))
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clipView.animator().bounds = rClipView
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}
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func visibleRowViews() -> [TimelineTableRowView]? {
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guard let scrollView = self.enclosingScrollView, numberOfRows > 0 else {
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return nil
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}
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let range = rows(in: scrollView.documentVisibleRect)
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let ixMax = numberOfRows - 1
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|
let ixStart = min(range.location, ixMax)
|
|
let ixEnd = min(((range.location + range.length) - 1), ixMax)
|
|
|
|
var visibleRows = [TimelineTableRowView]()
|
|
|
|
for ixRow in ixStart...ixEnd {
|
|
if let oneRowView = rowView(atRow: ixRow, makeIfNecessary: false) as? TimelineTableRowView {
|
|
visibleRows += [oneRowView]
|
|
}
|
|
}
|
|
|
|
return visibleRows.isEmpty ? nil : visibleRows
|
|
}
|
|
|
|
func redrawGrid() {
|
|
|
|
visibleRowViews()?.forEach { $0.invalidateGridRect() }
|
|
}
|
|
}
|