Revert "Revert "block 可以拖拽到内部，还有少量问题待解决""

This reverts commit fcd7beb193.

AIStudio.Wpf.DiagramApp/ViewModels/BlockViewModel.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+//using AIStudio.Wpf.Block.ViewModels;
+using AIStudio.Wpf.DiagramApp.Models;
+using AIStudio.Wpf.DiagramDesigner;
+
+namespace AIStudio.Wpf.DiagramApp.ViewModels
+{
+    internal class BlockViewModel : PageViewModel
+    {
+        public BlockViewModel(string title, string status, DiagramType diagramType) : base(title, status, diagramType)
+        {
+
+        }
+        public BlockViewModel(string filename, DiagramDocument diagramDocument) : base(filename, diagramDocument)
+        {
+            
+        }
+
+        protected override void InitDiagramViewModel()
+        {
+            base.InitDiagramViewModel();
+
+            DiagramViewModel.DiagramOption.LayoutOption.ShowGrid = false;
+        }
+
+        protected override void Init(bool initNew)
+        {
+            base.Init(initNew);
+
+            //StartBlockItemViewModel start = new StartBlockItemViewModel(DiagramViewModel) { Left = 28, Top = 28 };
+            //DiagramViewModel.Add(start);
+
+            //WaitTimeBlockItemViewModel waittime = new WaitTimeBlockItemViewModel(DiagramViewModel) { Left = 28, Top = 28 };
+            //DiagramViewModel.Add(waittime);
+
+            //AddBlockItemViewModel add = new AddBlockItemViewModel(DiagramViewModel) { Left = 28, Top = 28 };
+            //DiagramViewModel.Add(add);
+
+            //KeyboardPressBlockItemViewModel keyboardPress = new KeyboardPressBlockItemViewModel(DiagramViewModel) { Left = 28, Top = 28 };
+            //DiagramViewModel.Add(keyboardPress);
+        }
+    }
+}