Update editor

Ghost.Editor.Core/EditorApplication.cs

@@ -0,0 +1,39 @@
+using Microsoft.UI.Xaml;
+
+namespace Ghost.Editor.Core;
+
+public static class EditorApplication
+{
+    public const string ASSETS_FOLDER_NAME = "Assets";
+    public const string CACHES_FOLDER_NAME = "Caches";
+
+    private static IServiceProvider? s_serviceProvider;
+    private static string s_currentProjectPath = string.Empty;
+    private static string s_currentProjectName = string.Empty;
+
+    internal static Application CurrentApplication => Application.Current;
+    internal static string CurrentProjectPath => s_currentProjectPath;
+    internal static string CurrentProjectName => s_currentProjectName;
+
+    internal static void Initialize(IServiceProvider serviceProvider, string projectPath, string projectName)
+    {
+        s_serviceProvider = serviceProvider;
+        s_currentProjectPath = projectPath;
+        s_currentProjectName = projectName;
+    }
+
+    public static T GetService<T>()
+        where T : class
+    {
+        if (s_serviceProvider?.GetService(typeof(T)) is not T service)
+        {
+            throw new ArgumentException($"{typeof(T)} needs to be registered in ConfigureServices.");
+        }
+
+        return service;
+    }
+
+    internal static void Shutdown()
+    {
+    }
+}