结构调整，便于后续扩展

AIStudio.Wpf.BaseDiagram/Services/WPFUIVisualizerService.cs

@@ -0,0 +1,34 @@
+using AIStudio.Wpf.BaseDiagram.Controls;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace AIStudio.Wpf.BaseDiagram.Services
+{
+    public class WPFUIVisualizerService : IUIVisualizerService
+    {
+
+        #region Public Methods
+        /// <summary>
+        /// This method displays a modal dialog associated with the given key.
+        /// </summary>
+        /// <param name="dataContextForPopup">Object state to associate with the dialog</param>
+        /// <returns>True/False if UI is displayed.</returns>
+        public bool? ShowDialog(object dataContextForPopup)
+        {
+            Window win = new PopupWindow();
+            win.DataContext = dataContextForPopup;
+            win.Owner = Application.Current.MainWindow;
+            if (win != null)
+                return win.ShowDialog();
+
+            return false;
+        }
+        #endregion
+
+
+    }
+}