some fix

Author: RomanSoloweow

SimpleStateMachineNodeEditor/SimpleStateMachineNodeEditor.csproj

@@ -5,7 +5,7 @@
     <TargetFramework>netcoreapp3.1</TargetFramework>
     <UseWPF>true</UseWPF>
     <StartupObject>SimpleStateMachineNodeEditor.App</StartupObject>
-    <ApplicationIcon>StateMachine_16x.ico</ApplicationIcon>
+    <ApplicationIcon>StateMachine.ico</ApplicationIcon>
   </PropertyGroup>
 
   <ItemGroup>

…teMachineNodeEditor/StateMachine_16x.ico …eStateMachineNodeEditor/StateMachine.icoSimpleStateMachineNodeEditor/StateMachine_16x.ico renamed to SimpleStateMachineNodeEditor/StateMachine.ico SimpleStateMachineNodeEditor/StateMachine_16x.ico renamed to SimpleStateMachineNodeEditor/StateMachine.ico

@@ -129,7 +129,8 @@ private void OnEventMouseLeftDowns(MouseButtonEventArgs e)
         }
         private void Validate(RoutedEventArgs e)
         {
-            ViewModel.CommandValidateName.ExecuteWithSubscribe(NodeHeaderElement.TextBox.Text);
+            if (NodeHeaderElement.TextBox.Text != ViewModel.Name)
+                ViewModel.CommandValidateName.ExecuteWithSubscribe(NodeHeaderElement.TextBox.Text);
             if (NodeHeaderElement.TextBox.Text != ViewModel.Name)
                 NodeHeaderElement.TextBox.Text = ViewModel.Name;
         }

SimpleStateMachineNodeEditor/View/ViewNode.xaml.cs

@@ -99,7 +99,8 @@ private void OnEventMouseOver(bool value)
         }
         private void Validate(RoutedEventArgs e)
         {
-            ViewModel.CommandValidateName.ExecuteWithSubscribe(TextBoxElement.Text);
+            if (TextBoxElement.Text != ViewModel.Name)
+                ViewModel.CommandValidateName.ExecuteWithSubscribe(TextBoxElement.Text);
             if (TextBoxElement.Text != ViewModel.Name)
                 TextBoxElement.Text = ViewModel.Name;
         }

SimpleStateMachineNodeEditor/View/ViewRightConnector.xaml.cs

@@ -236,6 +236,7 @@ private void ClearScheme()
             this.Nodes.Clear();
             this.Connects.Clear();
             this.SchemePath = "";
+            this.NodesCount = 0;
 
             this.SetupStartState();
         }

SimpleStateMachineNodeEditor/ViewModel/NodesCanvas/ViewModelNodesCanvasCommands.cs

@@ -190,7 +190,8 @@ private void Move(MyPoint delta)
         }
         private void ValidateName(string newName)
         {
-            NodesCanvas.CommandValidateNodeName.ExecuteWithSubscribe((this, newName));
+
+              NodesCanvas.CommandValidateNodeName.ExecuteWithSubscribe((this, newName));
         }
         private void UpdatePoint2()
         {