结构调整，便于后续扩展

AIStudio.Wpf.BaseDiagram/Extensions/ViewModels/PersistDesignerItemViewModel.cs

@@ -0,0 +1,52 @@
+using AIStudio.Wpf.BaseDiagram.Services;
+using Util.DiagramDesigner;
+using AIStudio.Wpf.BaseDiagram.Extensions.Models;
+
+namespace AIStudio.Wpf.BaseDiagram.Extensions.ViewModels
+{
+    public class PersistDesignerItemViewModel : DesignerItemViewModelBase
+    {
+        private IUIVisualizerService visualiserService;
+
+        public PersistDesignerItemViewModel(IDiagramViewModel parent, PersistDesignerItem designer) : base(parent, designer)
+        {
+
+        }
+
+        public PersistDesignerItemViewModel() : base()
+        {
+
+        }
+
+        protected override void Init()
+        {
+            base.Init();
+
+            visualiserService = ApplicationServicesProvider.Instance.Provider.VisualizerService;
+            this.ShowConnectors = false;
+        }
+
+        protected override void LoadDesignerItemViewModel(IDiagramViewModel parent, SelectableDesignerItemBase designerbase)
+        {
+            base.LoadDesignerItemViewModel(parent, designerbase);
+
+            PersistDesignerItem designer = designerbase as PersistDesignerItem;
+            this.HostUrl = designer.HostUrl;
+        }
+
+
+        public string HostUrl { get; set; }
+
+        protected override void ExecuteEditCommand(object parameter)
+        {
+            PersistDesignerItemData data = new PersistDesignerItemData(HostUrl);
+            if (visualiserService.ShowDialog(data) == true)
+            {
+                this.HostUrl = data.HostUrl;
+            }
+        }
+
+
+
+    }
+}