Make progress on LogWindowController.

Frameworks/RSCore/RSCore/AppKit/LogWindowController.swift

@@ -12,48 +12,94 @@ class LogWindowController: NSWindowController {
 
 	@IBOutlet private var textView: NSTextView!
 	private var title: String!
+	private weak var log: Log?
 //	private let attributes = [NSFont.Att
-	public convenience init(title: String) {
+
+	public convenience init(title: String, log: Log) {
 
 		self.init(windowNibName: NSNib.Name(rawValue: "LogWindow"))
+		self.log = log
 		self.title = title
+
+		NotificationCenter.default.addObserver(self, selector: #selector(logDidAddItem(_:)), name: .LogDidAddItem, object: log)
 	}
 
     override func windowDidLoad() {
 
         window!.title = title
+		addExistingLogItems()
     }
 
-	public func appendLine(_ s: String) {
+	// MARK: - Notifications
 
-		// Adds two line feeds before the text.
+	@objc func logDidAddItem(_ note: Notification) {
 
+		guard let logItem = note.userInfo?[Log.logItemKey] as? LogItem else {
+			return
+		}
 
-	}
-
-	public func setTextViewText(_ s: String) {
-
-		let attributedString = NSAttributedString(string: s)
-		textView.textStorage?.setAttributedString(attributedString)
-
-		validateButtons()
+		appendLogItem(logItem)
 	}
 
 	// MARK: - Actions
 
 	@IBAction func clearContents(_ sender: Any?) {
 
-		setTextViewText("")
+		setTextViewAttributedString(NSAttributedString(string: ""))
 	}
 
 	@IBAction func saveToFile(_ sender: Any?) {
 
 	}
-
 }
 
 private extension LogWindowController {
 
+	func addExistingLogItems() {
+
+		guard let logItems = log?.logItems else {
+			return
+		}
+
+		let attString = NSMutableAttributedString()
+		for logItem in logItems {
+			let oneAttString = attributedString(for: logItem)
+			attString.append(oneAttString)
+		}
+
+		textView.textStorage?.setAttributedString(attString)
+
+		validateButtons()
+	}
+
+	func setTextViewAttributedString(_ attString: NSAttributedString) {
+
+		textView.textStorage?.setAttributedString(attString)
+		validateButtons()
+	}
+
+	func appendAttributedString(_ attString: NSAttributedString) {
+
+		if !Thread.isMainThread {
+			DispatchQueue.main.async {
+				self.appendAttributedString(attString)
+			}
+			return
+		}
+
+		validateButtons()
+	}
+
+	func appendLogItem(_ logItem: LogItem) {
+
+	}
+
+	func attributedString(for logItem: LogItem) -> NSAttributedString {
+
+		return NSAttributedString() //TODO
+
+	}
+
 	func validateButtons() {
 
 	}