Option to hide the digital timer

Timer/AppDelegate.swift

@@ -20,6 +20,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
 
   func applicationDidFinishLaunching(_ aNotification: Notification) {
     let controller = MVTimerController()
+    controller.isMainController = true
     controllers.append(controller)
     self.addBadgeToDock(controller: controller)
 
@@ -81,6 +82,7 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
   @objc func newDocument(_ sender: AnyObject?) {
     let controller = MVTimerController(closeToWindow: NSApplication.shared.keyWindow)
     controller.window?.level = self.windowLevel()
+    controller.isMainController = controllers.isEmpty
     controllers.append(controller)
   }
 
@@ -109,6 +111,9 @@ class AppDelegate: NSObject, NSApplicationDelegate, NSUserNotificationCenterDele
   }
 
   private func registerDefaults() {
-    UserDefaults.standard.register(defaults: [MVUserDefaultsKeys.staysOnTop: false])
+    UserDefaults.standard.register(defaults: [
+      MVUserDefaultsKeys.staysOnTop: false,
+      MVUserDefaultsKeys.hideDigitalTimer: false
+    ])
   }
 }

Timer/MVClockView.swift

@@ -5,7 +5,6 @@ class MVClockView: NSControl {
   private var pauseIconImageView: NSImageView!
   private var progressView: MVClockProgressView!
   private var arrowView: MVClockArrowView!
-  private var timerTimeLabel: NSTextView!
   private var timerTimeLabelFontSize: CGFloat = 15
   private var minutesLabel: NSTextView!
   private var minutesLabelSuffixWidth: CGFloat = 0.0
@@ -47,6 +46,7 @@ class MVClockView: NSControl {
       self.layoutPauseViews()
     }
   }
+  var timerTimeLabel: NSTextView!
 
   var seconds: CGFloat = 0.0 {
     didSet {

Timer/MVMainView.swift

@@ -16,6 +16,7 @@ class MVMainView: NSView {
   private var contextMenu: NSMenu?
   public  var menuItem: NSMenuItem?
   private var soundMenuItems: [NSMenuItem] = []
+  var hideDigitalTimerMenuItem: NSMenuItem?
 
   // swiftlint:disable unused_setter_value
   override var menu: NSMenu? {
@@ -52,9 +53,27 @@ class MVMainView: NSView {
         submenu.addItem(soundItem)
     }
     self.soundMenuItems.first?.state = .on
+
+    let menuItemViewConfig = NSMenuItem(
+      title: "View",
+      action: nil,
+      keyEquivalent: ""
+    )
+    let submenuViewConfig = NSMenu()
+    submenuViewConfig.autoenablesItems = false
+
+    hideDigitalTimerMenuItem = NSMenuItem(
+      title: "Hide digital timer",
+      action: #selector(self.toggleViewItemState),
+      keyEquivalent: ""
+    )
+    submenuViewConfig.addItem(hideDigitalTimerMenuItem!)
+
     self.contextMenu?.addItem(menuItem!)
     self.contextMenu?.addItem(menuItemSoundChoice)
     self.contextMenu?.setSubmenu(submenu, for: menuItemSoundChoice)
+    self.contextMenu?.addItem(menuItemViewConfig)
+    self.contextMenu?.setSubmenu(submenuViewConfig, for: menuItemViewConfig)
 
     let notificationCenter = NotificationCenter.default
 
@@ -102,6 +121,17 @@ class MVMainView: NSView {
     }
   }
 
+  @objc func toggleViewItemState(_ sender: NSMenuItem) {
+    var value = sender.state == .on ? true : false
+    value.toggle()
+    switch sender {
+    case hideDigitalTimerMenuItem:
+      self.controller?.setViewState(value, forKey: MVUserDefaultsKeys.hideDigitalTimer)
+    default:
+      break
+    }
+  }
+
   deinit {
     NotificationCenter.default.removeObserver(self)
   }

Timer/MVTimerController.swift

@@ -8,6 +8,8 @@ class MVTimerController: NSWindowController {
   private var audioPlayer: AVAudioPlayer? // player must be kept in memory
   private var soundURL = Bundle.main.url(forResource: "alert-sound", withExtension: "caf")
 
+  var isMainController: Bool = false
+
   convenience init() {
     let mainView = MVMainView(frame: NSRect.zero)
 
@@ -25,6 +27,8 @@ class MVTimerController: NSWindowController {
     self.windowFrameAutosaveName = "TimerWindowAutosaveFrame"
 
     window.makeKeyAndOrderFront(self)
+
+    loadViewStateFromUserDefaults()
   }
 
   convenience init(closeToWindow: NSWindow?) {
@@ -105,4 +109,32 @@ class MVTimerController: NSWindowController {
         self.soundURL = nil
     }
   }
+
+  func setViewState(_ value: Bool, forKey viewConfigKey: String) {
+    setViewState(value, forKey: viewConfigKey, save: isMainController)
+  }
+
+  private func setViewState(_ value: Bool, forKey viewConfigKey: String, save: Bool) {
+    let state: NSControl.StateValue = value ? .on : .off
+    switch viewConfigKey {
+    case MVUserDefaultsKeys.hideDigitalTimer:
+      mainView.hideDigitalTimerMenuItem?.state = state
+      clockView.timerTimeLabel.isHidden = value
+    default:
+      break
+    }
+    if save {
+      UserDefaults.standard.set(value, forKey: viewConfigKey)
+    }
+  }
+
+  private func loadViewStateFromUserDefaults() {
+    let keys: [String] = [
+      MVUserDefaultsKeys.hideDigitalTimer
+    ]
+    for key in keys {
+      let value = UserDefaults.standard.bool(forKey: key)
+      setViewState(value, forKey: key, save: false)
+    }
+  }
 }

Timer/MVUserDefaultsKeys.swift

@@ -1,3 +1,4 @@
 struct MVUserDefaultsKeys {
   static let staysOnTop = "staysOnTop"
+  static let hideDigitalTimer = "hideDigitalTimer"
 }