Created a BaseApplication class in common

MediaBrowser.Common/UI/BaseApplication.cs

@@ -0,0 +1,62 @@
+using System;
+using System.Threading.Tasks;
+using System.Windows;
+using MediaBrowser.Common.Kernel;
+using MediaBrowser.Common.Logging;
+using MediaBrowser.Model.Progress;
+
+namespace MediaBrowser.Common.UI
+{
+    public abstract class BaseApplication : Application
+    {
+        private IKernel Kernel { get; set; }
+
+        protected abstract IKernel InstantiateKernel();
+        protected abstract Window InstantiateMainWindow();
+
+        protected async override void OnStartup(StartupEventArgs e)
+        {
+            this.ShutdownMode = ShutdownMode.OnExplicitShutdown;
+
+            await LoadKernel();
+        }
+
+        private async Task LoadKernel()
+        {
+            Kernel = InstantiateKernel();
+
+            Progress<TaskProgress> progress = new Progress<TaskProgress>();
+            Splash splash = new Splash(progress);
+
+            splash.Show();
+
+            try
+            {
+                DateTime now = DateTime.Now;
+
+                await Kernel.Init(progress);
+
+                double seconds = (DateTime.Now - now).TotalSeconds;
+
+                Logger.LogInfo("Kernel.Init completed in {0} seconds.", seconds);
+                splash.Close();
+
+                this.ShutdownMode = System.Windows.ShutdownMode.OnLastWindowClose;
+                InstantiateMainWindow().ShowDialog();
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show("There was an error launching Media Browser: " + ex.Message);
+                splash.Close();
+                Shutdown(1);
+            }
+        }
+
+        protected override void OnExit(ExitEventArgs e)
+        {
+            base.OnExit(e);
+
+            Kernel.Dispose();
+        }
+    }
+}