demo提交

AIStudio.Wpf.DiagramDesigner/ViewModels/BaseViewModel/SelectableDesignerItemViewModelBase.cs

@@ -42,8 +42,13 @@ namespace AIStudio.Wpf.DiagramDesigner
         {
             base.Init();
 
-            SelectItemCommand = new SimpleCommand(ExecuteSelectItemCommand);
-            EditCommand = new SimpleCommand(ExecuteEditCommand);
+            SelectItemCommand = new SimpleCommand(Command_Enable, ExecuteSelectItemCommand);
+            EditCommand = new SimpleCommand(Command_Enable, ExecuteEditCommand);
+        }
+
+        protected override void LoadDesignerItemViewModel(IDiagramViewModel root, SelectableItemBase designerbase)
+        {
+            base.LoadDesignerItemViewModel(root, designerbase);
         }
 
         public virtual bool InitData()
@@ -62,7 +67,29 @@ namespace AIStudio.Wpf.DiagramDesigner
         public ICommand EditCommand
         {
             get; private set;
-        }      
+        }
+
+        private bool _isSelected;
+        [Browsable(false)]
+        public override bool IsSelected
+        {
+            get
+            {
+                return _isSelected;
+            }
+            set
+            {
+                if (SetProperty(ref _isSelected, value))
+                {
+                    //如果没有文字，失去焦点自动清除
+                    if (_isSelected == false && string.IsNullOrEmpty(Text))
+                    {
+                        ShowText = false;
+                    }
+                }
+
+            }
+        }
 
         private string _text;
         [Browsable(true)]