resolve #27

Author: RomanSoloweow

SimpleStateMachineNodeEditor/Helpers/Extensions/PointExtensition.cs

@@ -1,5 +1,7 @@
-using System;
+using ReactiveUI;
+using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Runtime.CompilerServices;
 using System.Text;
 using System.Windows;
@@ -321,13 +323,33 @@ public static Point Multiply(this Point point1, Size size)
 
         public static string PointToString(Point point)
         {
-            return string.Format("{0}, {1}", point.X.ToString(System.Globalization.CultureInfo.InvariantCulture), point.Y.ToString(System.Globalization.CultureInfo.InvariantCulture));
+            return string.Format("{0}, {1}", point.X.ToString(CultureInfo.InvariantCulture), point.Y.ToString(CultureInfo.InvariantCulture));
         }
 
-        public static Point StringToPoint(string str)
+        public static bool TryParseFromString(string str, out Point point)
         {
+            point = default(Point);
             string[] parts = str.Split(",");
-            return new Point(double.Parse(parts[0], System.Globalization.CultureInfo.InvariantCulture), double.Parse(parts[1], System.Globalization.CultureInfo.InvariantCulture));
+            if (parts.Length < 2)
+                return false;
+
+            double x, y;
+
+            if (!double.TryParse(parts[0], NumberStyles.Float, CultureInfo.InvariantCulture, out x))
+            {
+                return false;
+            }
+
+            if (!double.TryParse(parts[1], NumberStyles.Float, CultureInfo.InvariantCulture, out y))
+            {
+                return false;
+            }
+
+            point = new Point(x, y);
+
+            return true;
+            //return new Point(double.Parse(parts[0], System.Globalization.CultureInfo.InvariantCulture), double.Parse(parts[1], System.Globalization.CultureInfo.InvariantCulture));
         }
+
     }
 }

SimpleStateMachineNodeEditor/ViewModel/Node/NodeViewModel.cs

@@ -48,7 +48,7 @@ private NodeViewModel()
         }
 
 
-        public NodeViewModel(NodesCanvasViewModel nodesCanvas, string name, Point point)
+        public NodeViewModel(NodesCanvasViewModel nodesCanvas, string name, Point point = default(Point))
         {
             NodesCanvas = nodesCanvas;
             Name = name;
@@ -128,11 +128,15 @@ public XElement ToXElement()
         {
             XElement element = new XElement("State");
             element.Add(new XAttribute("Name", Name));
+            return element;
+        }
+        public XElement ToVisualizationXElement()
+        {
+            XElement element = ToXElement();
             element.Add(new XAttribute("Position", PointExtensition.PointToString(Point1)));
             element.Add(new XAttribute("IsCollapse", IsCollapse.ToString()));
             return element;
         }
-
         public static NodeViewModel FromXElement(NodesCanvasViewModel nodesCanvas, XElement node, out string errorMessage, Func<string, bool> actionForCheck)
         {
             errorMessage = null;
@@ -151,15 +155,7 @@ public static NodeViewModel FromXElement(NodesCanvasViewModel nodesCanvas, XElem
                 return viewModelNode;
             }
 
-            var position = node.Attribute("Position")?.Value;
-            Point point = string.IsNullOrEmpty(position) ? new Point() : PointExtensition.StringToPoint(position);
-            viewModelNode = new NodeViewModel(nodesCanvas, name, point);
-            var isCollapse = node.Attribute("IsCollapse")?.Value;
-            if (isCollapse != null)
-                viewModelNode.IsCollapse = bool.Parse(isCollapse);
-
-
-
+            viewModelNode = new NodeViewModel(nodesCanvas, name);
 
             return viewModelNode;
         }

SimpleStateMachineNodeEditor/ViewModel/NodesCanvas/NodesCanvasCommandsViewModel.cs

@@ -389,6 +389,61 @@ private void Open()
             SchemePath = fileName;
 
             #endregion  setup Transitions/connects
+
+            #region setup Visualization
+            XElement Visualization = stateMachineXElement.Element("Visualization");
+
+          
+            if (Visualization != null)
+            {
+                var visualizationStates = Visualization.Elements()?.ToList();
+                if(visualizationStates!=null)
+                {
+                    var nodes = this.Nodes.Items.ToDictionary(x => x.Name, x => x);
+                    Point point;
+                    bool isCollapse;
+                    string name;
+                    string pointAttribute;
+                    string isCollapseAttribute;
+                    foreach (var visualization in visualizationStates)
+                    {
+                        name = visualization.Attribute("Name")?.Value;
+                        if(nodes.TryGetValue(name, out NodeViewModel node))
+                        {
+                            pointAttribute = visualization.Attribute("Position")?.Value;
+                            if (!PointExtensition.TryParseFromString(pointAttribute, out point))
+                            {
+                                Error(String.Format("Error parse attribute \'position\' for state with name \'{0}\'", name));
+                                return;
+                            }
+                            isCollapseAttribute = visualization.Attribute("IsCollapse")?.Value;
+                            if (!bool.TryParse(isCollapseAttribute, out isCollapse))
+                            {
+                                Error(String.Format("Error parse attribute \'isCollapse\' for state with name \'{0}\'", name));
+                                return;
+                            }
+                            node.Point1 = point;
+                            node.IsCollapse = isCollapse;
+                        }
+                        else
+                        {
+                            Error(String.Format("Visualization for state with name \'{0}\' that not exist", name));
+                            return;
+                        }
+                    }
+                }
+                
+            
+                //NodeViewModel nodeViewModel = Nodes.w 
+                //var position = node.Attribute("Position")?.Value;
+                //Point point = string.IsNullOrEmpty(position) ? new Point() : PointExtensition.StringToPoint(position);
+                //var isCollapse = node.Attribute("IsCollapse")?.Value;
+                //if (isCollapse != null)
+                //    viewModelNode.IsCollapse = bool.Parse(isCollapse);
+
+            }
+            #endregion  setup Visualization
+
             Mouse.OverrideCursor = null;
             WithoutMessages = false;
             LogDebug("Scheme was loaded from file \"{0}\"", SchemePath);
@@ -471,6 +526,15 @@ private void Save(string fileName)
                 transitions.Add(transition.ToXElement());
             }
 
+
+            XElement visualizationXElement = new XElement("Visualization");
+            stateMachineXElement.Add(visualizationXElement);
+            foreach (var state in Nodes.Items)
+            {
+                visualizationXElement.Add(state.ToVisualizationXElement());
+            }
+
+
             xDocument.Save(fileName);
             ItSaved = true;
             SchemePath = fileName;