Fixed Systray NotifyPropertyChanged, shortcut setting window

Views/SystrayViewModel.cs

@@ -0,0 +1,88 @@
+using System.Windows;
+using System.Windows.Input;
+using System.Reflection;
+using System.ComponentModel;
+using System;
+
+namespace unison
+{
+    public class SystrayViewModel : INotifyPropertyChanged
+    {
+        public SystrayViewModel()
+        {
+        }
+
+        public string GetAppText => "unison v" + Assembly.GetEntryAssembly().GetCustomAttribute<AssemblyInformationalVersionAttribute>().InformationalVersion;
+
+        public ICommand ShowWindowCommand => new DelegateCommand
+        {
+            CommandAction = () =>
+            {
+                Window AppWindow = Application.Current.MainWindow;
+                AppWindow.Show();
+                AppWindow.Activate();
+
+                if (AppWindow.WindowState == WindowState.Minimized)
+                    AppWindow.WindowState = WindowState.Normal;
+            },
+            CanExecuteFunc = () => true
+        };
+
+        public ICommand ExitApplicationCommand => new DelegateCommand
+        {
+            CommandAction = () =>
+            {
+                Application.Current.Shutdown();
+            },
+            CanExecuteFunc = () => true
+        };
+
+        public string SnapcastText
+        {
+            get
+            {
+                SnapcastHandler snapcast = (SnapcastHandler)Application.Current.Properties["snapcast"];
+                return snapcast.Started ? "Stop Snapcast" : "Start Snapcast";
+            }
+        }
+
+        public ICommand Snapcast
+        {
+            get
+            {
+                return new DelegateCommand
+                {
+                    CommandAction = () =>
+                    {
+                        Application.Current.Dispatcher.BeginInvoke(new Action(() => OnPropertyChanged("SnapcastText")));
+                        ((MainWindow)Application.Current.MainWindow).Snapcast_Clicked(null, null);
+                    },
+                    CanExecuteFunc = () => true
+                };
+            }
+        }
+
+        public ICommand Settings
+        {
+            get
+            {
+                return new DelegateCommand
+                {
+                    CommandAction = () =>
+                    {
+                        ((MainWindow)Application.Current.MainWindow).Settings_Clicked(null, null);
+                    },
+                    CanExecuteFunc = () => true
+                };
+            }
+        }
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        protected virtual void OnPropertyChanged(string propertyName)
+        {
+            PropertyChangedEventHandler handler = PropertyChanged;
+            if (handler != null) handler(this, new PropertyChangedEventArgs(propertyName));
+        }
+    }
+}