Make further progress on rename sheet.

Evergreen/Base.lproj/RenameSheet.xib

@@ -10,6 +10,7 @@
                 <outlet property="newTitleTextField" destination="OYZ-cW-H2x" id="QBo-lj-NGi"/>
                 <outlet property="renameButton" destination="RI3-Rg-htY" id="PMM-jS-psV"/>
                 <outlet property="renamePrompt" destination="Sh3-Yd-lqa" id="wd5-4I-pYl"/>
+                <outlet property="window" destination="QvC-M9-y7g" id="eYQ-Qy-Z2g"/>
             </connections>
         </customObject>
         <customObject id="-1" userLabel="First Responder" customClass="FirstResponder"/>
@@ -50,7 +51,13 @@
                         <buttonCell key="cell" type="push" title="Rename" bezelStyle="rounded" alignment="center" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="gcS-uM-zjx">
                             <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
                             <font key="font" metaFont="system"/>
+                            <string key="keyEquivalent" base64-UTF8="YES">
+DQ
+</string>
                         </buttonCell>
+                        <connections>
+                            <action selector="rename:" target="-1" id="ba5-O4-rNJ"/>
+                        </connections>
                     </button>
                     <button verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="vuB-kU-1EJ">
                         <rect key="frame" x="232" y="13" width="89" height="32"/>
@@ -61,6 +68,9 @@
 Gw
 </string>
                         </buttonCell>
+                        <connections>
+                            <action selector="cancel:" target="-1" id="4sS-Ja-Gev"/>
+                        </connections>
                     </button>
                 </subviews>
                 <constraints>

Evergreen/MainWindow/ContextualMenus/MainWindowController+ContextualMenus.swift

@@ -63,6 +63,24 @@ extension MainWindowController {
 
 	@objc func renameFromContextualMenu(_ sender: Any?) {
 
+		guard let window = window, let menuItem = sender as? NSMenuItem, let object = menuItem.representedObject as? DisplayNameProvider, object is Feed || object is Folder else {
+			return
+		}
+
+		renameWindowController = RenameWindowController(originalTitle: object.nameForDisplay) { (newTitle) in
+			guard let newTitle = newTitle else {
+				return
+			}
+			if let feed = object as? Feed {
+				feed.editedName = newTitle
+			}
+			else if let folder = object as? Folder {
+				folder.name = newTitle
+			}
+			self.renameWindowController = nil
+		}
+
+		renameWindowController!.runSheetOnWindow(window)
 	}
 }
 

Evergreen/MainWindow/MainWindowController.swift

@@ -25,6 +25,8 @@ class MainWindowController : NSWindowController, NSUserInterfaceValidations {
 		return false
 	}
 
+	var renameWindowController: RenameWindowController?
+	
 	// MARK: NSWindowController
 
 	private let windowAutosaveName = NSWindow.FrameAutosaveName(rawValue: kWindowFrameKey)

Evergreen/MainWindow/Sidebar/Renaming/RenameWindowController.swift

@@ -15,18 +15,52 @@ final class RenameWindowController: NSWindowController {
 	@IBOutlet var renameButton: NSButton!
 	
 	private var originalTitle: String!
+	private var hostWindow: NSWindow!
+	private var callback: ((String?) -> Void)?
 
-	convenience init(originalTitle: String) {
+	convenience init(originalTitle: String, callback: @escaping ((String?) -> Void)) {
 
 		self.init(windowNibName: NSNib.Name(rawValue: "RenameSheet"))
 		self.originalTitle = originalTitle
+		self.callback = callback
 	}
 
 	override func windowDidLoad() {
 
 		newTitleTextField.stringValue = originalTitle
+
+		let prompt = NSLocalizedString("Rename %@ to:", comment: "Rename sheet")
+		let localizedPrompt = NSString.localizedStringWithFormat(prompt as NSString, originalTitle)
+		renamePrompt.stringValue = localizedPrompt as String
+
 		updateUI()
 	}
+
+	func runSheetOnWindow(_ w: NSWindow) {
+
+		guard let window = window else {
+			return
+		}
+
+		hostWindow = w
+		hostWindow.beginSheet(window) { (returnCode: NSApplication.ModalResponse) -> Void in
+		}
+	}
+
+	// MARK: Actions
+
+	@IBAction func cancel(_ sender: AnyObject) {
+
+		callback?(nil)
+		hostWindow!.endSheet(window!, returnCode: .cancel)
+	}
+
+	@IBAction func rename(_ sender: AnyObject) {
+
+		callback?(newTitleTextField.stringValue)
+		hostWindow!.endSheet(window!, returnCode: .OK)
+	}
+
 }
 
 extension RenameWindowController: NSTextFieldDelegate {