sfc界面处理完成，还差顺序逻辑控制过程

AIStudio.Wpf.SFC/ViewModels/SFCActionNode.cs

@@ -9,10 +9,52 @@ namespace AIStudio.Wpf.SFC.ViewModels
     {
         public SFCActionNode() : base(SFCNodeKinds.Action)
         {
+            FontViewModel.FontSize = 10;
+            ItemWidth = 60;
+            ItemHeight = 48;
+
+            ExecuteAddLeftInput(null);
         }
 
         public SFCActionNode(IDiagramViewModel parent, DesignerItemBase designer) : base(parent, designer)
         {
+            
+        }
+
+        private string _expression;
+        public string Expression
+        {
+            get
+            {
+                return _expression;
+            }
+            set
+            {
+                SetProperty(ref _expression, value);
+            }
+        }
+
+        private LinkPoint _linkPoint;
+        public LinkPoint LinkPoint
+        {
+            get
+            {
+                return _linkPoint;
+            }
+            set
+            {
+                SetProperty(ref _linkPoint, value);
+            }
+        }
+
+        protected override void ExecuteEditCommand(object parameter)
+        {
+            SFCActionNodeData data = new SFCActionNodeData(LinkPoint, Expression);
+            if (visualiserService.ShowDialog(data) == true)
+            {
+                this.LinkPoint = data.LinkPoint;
+                this.Expression = data.Expression;
+            }
         }
     }
 }