Adds NumberFormatter to Unread Counts

Fixes #3892

Mac/MainWindow/Sidebar/UnreadCountView.swift

@@ -27,7 +27,7 @@ class UnreadCountView : NSView {
 		}
 	}
 	var unreadCountString: String {
-		return unreadCount < 1 ? "" : "\(unreadCount)"
+		return unreadCount < 1 ? "" : numberFormatter.string(from: NSNumber(value: unreadCount))!
 	}
 
 	private var intrinsicContentSizeIsValid = false
@@ -92,5 +92,21 @@ class UnreadCountView : NSView {
 			unreadCountString.draw(at: textRect().origin, withAttributes: Appearance.textAttributes)
 		}
 	}
+	
+	var numberFormatter: NumberFormatter!
+	
+	override init(frame frameRect: NSRect) {
+		super.init(frame: frameRect)
+		self.frame = frameRect
+		
+		let formatter = NumberFormatter()
+		formatter.locale = Locale.current
+		formatter.numberStyle = .decimal
+		numberFormatter = formatter
+	}
+	
+	required init?(coder: NSCoder) {
+		fatalError("init(coder:) has not been implemented")
+	}
 }
 

iOS/MasterFeed/Cell/MasterFeedUnreadCountView.swift

@@ -35,8 +35,10 @@ class MasterFeedUnreadCountView : UIView {
 	}
 	
 	var unreadCountString: String {
-		return unreadCount < 1 ? "" : "\(unreadCount)"
+		return unreadCount < 1 ? "" : numberFormatter.string(from: NSNumber(value: unreadCount))!
 	}
+	
+	var numberFormatter: NumberFormatter!
 
 	private var contentSizeIsValid = false
 	private var _contentSize = CGSize.zero
@@ -44,11 +46,21 @@ class MasterFeedUnreadCountView : UIView {
 	override init(frame: CGRect) {
 		super.init(frame: frame)
 		self.isOpaque = false
+		
+		let formatter = NumberFormatter()
+		formatter.locale = Locale.current
+		formatter.numberStyle = .decimal
+		numberFormatter = formatter
 	}
 	
 	required init?(coder aDecoder: NSCoder) {
 		super.init(coder: aDecoder)
 		self.isOpaque = false
+		
+		let formatter = NumberFormatter()
+		formatter.locale = Locale.current
+		formatter.numberStyle = .decimal
+		numberFormatter = formatter
 	}
 	
 	override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {