Run the new-folder sheet on the frontmost window.

Evergreen/AppDelegate.swift

@@ -54,6 +54,8 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations {
 		appDelegate = self
 	}
 
+	// MARK: - API
+
 	func logMessage(_ message: String, type: LogItem.ItemType) {
 
 		let logItem = LogItem(type: type, message: message)
@@ -65,6 +67,12 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations {
 		logMessage(message, type: .debug)
 	}
 
+	func showAddFolderSheetOnWindow(_ window: NSWindow) {
+
+		addFolderWindowController = AddFolderWindowController()
+		addFolderWindowController!.runSheetOnWindow(window)
+	}
+
 	// MARK: - NSApplicationDelegate
 
 	func applicationDidFinishLaunching(_ note: Notification) {
@@ -211,9 +219,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserInterfaceValidations {
 	@IBAction func showAddFolderWindow(_ sender: AnyObject) {
 
 		createAndShowMainWindow()
-
-		addFolderWindowController = AddFolderWindowController()
-		addFolderWindowController!.runSheetOnWindow(mainWindowController!.window!)
+		showAddFolderSheetOnWindow(mainWindowController!.window!)
 	}
 
 	@IBAction func showFeedList(_ sender: AnyObject) {

Evergreen/MainWindow/MainWindowController.swift

@@ -111,6 +111,11 @@ class MainWindowController : NSWindowController, NSUserInterfaceValidations {
 
 	// MARK: Actions
 	
+    @IBAction func showAddFolderWindow(_ sender: AnyObject) {
+
+        appDelegate.showAddFolderSheetOnWindow(window!)
+    }
+    
 	@IBAction func openArticleInBrowser(_ sender: AnyObject?) {
 		
 		if let link = currentLink {