Add AuthorAvatarDownloader.

Evergreen.xcodeproj/project.pbxproj

@@ -100,6 +100,7 @@
 		84DAEE301F86CAFE0058304B /* OPMLImporter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84DAEE2F1F86CAFE0058304B /* OPMLImporter.swift */; };
 		84DAEE321F870B390058304B /* DockBadge.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84DAEE311F870B390058304B /* DockBadge.swift */; };
 		84E46C7D1F75EF7B005ECFB3 /* AppDefaults.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84E46C7C1F75EF7B005ECFB3 /* AppDefaults.swift */; };
+		84E850861FCB60CE0072EA88 /* AuthorAvatarDownloader.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84E850851FCB60CE0072EA88 /* AuthorAvatarDownloader.swift */; };
 		84E95CF71FABB3C800552D99 /* FeedList.plist in Resources */ = {isa = PBXBuildFile; fileRef = 84E95CF61FABB3C800552D99 /* FeedList.plist */; };
 		84E95D241FB1087500552D99 /* ArticlePasteboardWriter.swift in Sources */ = {isa = PBXBuildFile; fileRef = 84E95D231FB1087500552D99 /* ArticlePasteboardWriter.swift */; };
 		84EB381F1FBA8B9F000D2111 /* KeyboardShortcuts.html in Resources */ = {isa = PBXBuildFile; fileRef = 84EB38101FBA8B9F000D2111 /* KeyboardShortcuts.html */; };
@@ -489,6 +490,7 @@
 		84DAEE2F1F86CAFE0058304B /* OPMLImporter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OPMLImporter.swift; sourceTree = "<group>"; };
 		84DAEE311F870B390058304B /* DockBadge.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = DockBadge.swift; path = Evergreen/DockBadge.swift; sourceTree = "<group>"; };
 		84E46C7C1F75EF7B005ECFB3 /* AppDefaults.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; name = AppDefaults.swift; path = Evergreen/AppDefaults.swift; sourceTree = "<group>"; };
+		84E850851FCB60CE0072EA88 /* AuthorAvatarDownloader.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AuthorAvatarDownloader.swift; sourceTree = "<group>"; };
 		84E95CF61FABB3C800552D99 /* FeedList.plist */ = {isa = PBXFileReference; lastKnownFileType = text.plist.xml; path = FeedList.plist; sourceTree = "<group>"; };
 		84E95D231FB1087500552D99 /* ArticlePasteboardWriter.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ArticlePasteboardWriter.swift; sourceTree = "<group>"; };
 		84EB38101FBA8B9F000D2111 /* KeyboardShortcuts.html */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.html; path = KeyboardShortcuts.html; sourceTree = "<group>"; };
@@ -564,6 +566,7 @@
 			isa = PBXGroup;
 			children = (
 				845213221FCA5B10003B6E93 /* ImageDownloader.swift */,
+				84E850851FCB60CE0072EA88 /* AuthorAvatarDownloader.swift */,
 			);
 			name = Images;
 			path = Evergreen/Images;
@@ -1383,6 +1386,7 @@
 				849A97A31ED9F180007D329B /* FolderTreeControllerDelegate.swift in Sources */,
 				845A29091FC74B8E007B49E3 /* SingleFaviconDownloader.swift in Sources */,
 				849A97851ED9ECCD007D329B /* PreferencesWindowController.swift in Sources */,
+				84E850861FCB60CE0072EA88 /* AuthorAvatarDownloader.swift in Sources */,
 				849A977A1ED9EC04007D329B /* TimelineTableCellView.swift in Sources */,
 				849A97761ED9EC04007D329B /* TimelineCellAppearance.swift in Sources */,
 				849A97A21ED9F180007D329B /* FeedTitleDownloader.swift in Sources */,

Evergreen/AppDelegate.swift

@@ -23,6 +23,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations,
 	var currentTheme: VSTheme!
 	var faviconDownloader: FaviconDownloader!
 	var imageDownloader: ImageDownloader!
+	var authorAvatarDownloader: AuthorAvatarDownloader!
 	var appName: String!
 	var pseudoFeeds = [PseudoFeed]()
 
@@ -142,6 +143,8 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations,
 		try! FileManager.default.createDirectory(at: imagesFolderURL, withIntermediateDirectories: true, attributes: nil)
 		imageDownloader = ImageDownloader(folder: imagesFolder)
 
+		authorAvatarDownloader = AuthorAvatarDownloader(imageDownloader: imageDownloader)
+
 		let todayFeed = SmartFeed(delegate: TodayFeedDelegate())
 		let unreadFeed = UnreadFeed()
 		let starredFeed = SmartFeed(delegate: StarredFeedDelegate())
@@ -157,6 +160,8 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations,
 
 		NSAppleEventManager.shared().setEventHandler(self, andSelector: #selector(AppDelegate.getURL(_:_:)), forEventClass: AEEventClass(kInternetEventClass), andEventID: AEEventID(kAEGetURL))
 
+		NotificationCenter.default.addObserver(self, selector: #selector(feedSettingDidChange(_:)), name: .FeedSettingDidChange, object: nil)
+
 		DispatchQueue.main.async {
 			self.unreadCount = AccountManager.shared.unreadCount
 		}
@@ -206,6 +211,14 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations,
 		}
 	}
 
+	@objc func feedSettingDidChange(_ note: Notification) {
+
+		guard let feed = note.object as? Feed else {
+			return
+		}
+		let _ = faviconDownloader.favicon(for: feed)
+	}
+
 	// MARK: Main Window
 
 	func windowControllerWithName(_ storyboardName: String) -> NSWindowController {

Evergreen/Images/AuthorAvatarDownloader.swift

@@ -0,0 +1,28 @@
+//
+//  AuthorAvatarDownloader.swift
+//  Evergreen
+//
+//  Created by Brent Simmons on 11/26/17.
+//  Copyright © 2017 Ranchero Software. All rights reserved.
+//
+
+import Cocoa
+import Data
+
+final class AuthorAvatarDownloader {
+
+	private let imageDownloader: ImageDownloader
+
+	init(imageDownloader: ImageDownloader) {
+
+		self.imageDownloader = imageDownloader
+	}
+
+	func image(for author: Author) -> NSImage? {
+
+		guard let avatarURL = author.avatarURL else {
+			return nil
+		}
+		return imageDownloader.image(for: avatarURL)
+	}
+}

Evergreen/MainWindow/Timeline/TimelineViewController.swift

@@ -452,10 +452,7 @@ extension TimelineViewController: NSTableViewDelegate {
 
 	private func avatarForAuthor(_ author: Author) -> NSImage? {
 
-		if let url = author.avatarURL {
+		return appDelegate.authorAvatarDownloader.image(for: author)
-			return appDelegate.imageDownloader.image(for: url)
-		}
-		return nil
 	}
 
 	private func featuredImageFor(_ article: Article) -> NSImage? {