1 files changed, 123 insertions, 0 deletions
diff --git a/MediaBrowser.Common/UI/BaseApplication.cs b/MediaBrowser.Common/UI/BaseApplication.cs
new file mode 100644
index 000000000..c3792c714
--- /dev/null
+++ b/MediaBrowser.Common/UI/BaseApplication.cs
@@ -0,0 +1,123 @@
+using MediaBrowser.Common.Kernel;
+using MediaBrowser.Common.Logging;
+using MediaBrowser.Model.Progress;
+using Microsoft.Shell;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Windows;
+
+namespace MediaBrowser.Common.UI
+{
+    /// <summary>
+    /// Serves as a base Application class for both the UI and Server apps.
+    /// </summary>
+    public abstract class BaseApplication : Application, INotifyPropertyChanged, ISingleInstanceApp
+    {
+        private IKernel Kernel { get; set; }
+
+        protected abstract IKernel InstantiateKernel();
+        protected abstract Window InstantiateMainWindow();
+
+        public event PropertyChangedEventHandler PropertyChanged;
+
+        public void OnPropertyChanged(String info)
+        {
+            if (PropertyChanged != null)
+            {
+                PropertyChanged(this, new PropertyChangedEventArgs(info));
+            }
+        }
+
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            // Without this the app will shutdown after the splash screen closes
+            ShutdownMode = ShutdownMode.OnExplicitShutdown;
+
+            LoadKernel();
+        }
+
+        private async void LoadKernel()
+        {
+            Kernel = InstantiateKernel();
+
+            var progress = new Progress<TaskProgress>();
+
+            var splash = new Splash(progress);
+
+            splash.Show();
+
+            try
+            {
+                DateTime now = DateTime.UtcNow;
+
+                await Kernel.Init(progress);
+
+                Logger.LogInfo("Kernel.Init completed in {0} seconds.", (DateTime.UtcNow - now).TotalSeconds);
+                splash.Close();
+
+                ShutdownMode = System.Windows.ShutdownMode.OnLastWindowClose;
+
+                OnKernelLoaded();
+
+                InstantiateMainWindow().Show();
+            }
+            catch (Exception ex)
+            {
+                Logger.LogException(ex);
+
+                MessageBox.Show("There was an error launching Media Browser: " + ex.Message);
+                splash.Close();
+
+                // Shutdown the app with an error code
+                Shutdown(1);
+            }
+        }
+
+        protected virtual void OnKernelLoaded()
+        {
+        }
+
+        protected override void OnExit(ExitEventArgs e)
+        {
+            base.OnExit(e);
+
+            Kernel.Dispose();
+        }
+
+        public bool SignalExternalCommandLineArgs(IList<string> args)
+        {
+            OnSecondInstanceLaunched(args);
+
+            return true;
+        }
+
+        protected virtual void OnSecondInstanceLaunched(IList<string> args)
+        {
+            if (this.MainWindow.WindowState == WindowState.Minimized)
+            {
+                this.MainWindow.WindowState = WindowState.Maximized;
+            }            
+        }
+
+        public static void RunApplication<TApplicationType>(string uniqueKey)
+            where TApplicationType : BaseApplication, IApplication, new()
+        {
+            if (SingleInstance<TApplicationType>.InitializeAsFirstInstance(uniqueKey))
+            {
+                var application = new TApplicationType();
+                application.InitializeComponent();
+
+                application.Run();
+
+                // Allow single instance code to perform cleanup operations
+                SingleInstance<TApplicationType>.Cleanup();
+            }
+        }
+    }
+
+    public interface IApplication
+    {
+        void InitializeComponent();
+    }
+}