Added deserialzor node for parsing the json to model ot list of model

Examples/Nodify.Calculator/NodeHandlers/DeserializeHandler.cs

@@ -0,0 +1,130 @@
+using Nodify.Calculator.Models;
+using System.Drawing;
+
+namespace Nodify.Calculator.NodeHandlers
+{
+    public class DeserializeHandler : INodeHandler
+    {
+        public string NodeTypeKey => "System";
+
+        public bool CanCreate(OperationInfoViewModel info)
+            => info.Type == OperationType.System && info.sysOp == SystemOperations.DESERIALIZE;
+
+        public bool CanRestore(NodeData data)
+            => data.NodeType == "System" && data.SystemOp == nameof(SystemOperations.DESERIALIZE);
+
+        public OperationViewModel Create(OperationInfoViewModel info)
+        {
+            var op = new DeserializeOperationViewModel();
+
+            // Flow in
+            op.Input.Add(new ConnectorViewModel
+            {
+                Title = "",
+                Shape = ConnectorShape.Triangle,
+                ConnectorColor = NodeColors.Exec
+            });
+
+            // String input (accepts any data connection)
+            op.Input.Add(new ConnectorViewModel
+            {
+                Title = "Json",
+                Shape = ConnectorShape.Circle,
+                ConnectorColor = NodeColors.String,
+                IsCopyConnector = true
+            });
+
+            // Flow out
+            op.Output.Add(new ConnectorViewModel
+            {
+                Title = "",
+                IsInput = false,
+                Shape = ConnectorShape.Triangle,
+                ConnectorColor = NodeColors.Exec
+            });
+
+            // Default output (will be updated when user selects target type)
+            op.Output.Add(new ConnectorViewModel
+            {
+                Title = "Result",
+                IsInput = false,
+                Shape = ConnectorShape.Circle,
+                ConnectorColor = Color.LimeGreen,
+                DataType = "object"
+            });
+
+            return op;
+        }
+
+        public OperationViewModel Restore(NodeData data)
+        {
+            var op = new DeserializeOperationViewModel();
+
+            // Flow in
+            op.Input.Add(new ConnectorViewModel
+            {
+                Title = "",
+                Shape = ConnectorShape.Triangle,
+                ConnectorColor = NodeColors.Exec
+            });
+
+            // String input
+            op.Input.Add(new ConnectorViewModel
+            {
+                Title = "Json",
+                Shape = ConnectorShape.Circle,
+                ConnectorColor = NodeColors.String,
+                IsCopyConnector = true
+            });
+
+            // Restore adapted input connector from saved data
+            if (data.InputConnectors.Count > 1 && data.InputConnectors[1].Shape != "Circle")
+            {
+                var saved = data.InputConnectors[1];
+                var inp = op.Input[1]; // the Json input (index 1, after flow)
+                inp.Shape = NodeHandlerRegistry.ParseShape(saved.Shape);
+                inp.ConnectorColor = Color.FromArgb(saved.ColorArgb);
+                inp.DataType = saved.DataType;
+            }
+
+            // Flow out
+            op.Output.Add(new ConnectorViewModel
+            {
+                Title = "",
+                IsInput = false,
+                Shape = ConnectorShape.Triangle,
+                ConnectorColor = NodeColors.Exec
+            });
+
+            // Restore selected target type
+            if (!string.IsNullOrEmpty(data.ParseJsonTargetType))
+            {
+                op.RefreshAvailableTypes();
+                op.SelectedTargetType = data.ParseJsonTargetType;
+            }
+            else
+            {
+                op.Output.Add(new ConnectorViewModel
+                {
+                    Title = "Result",
+                    IsInput = false,
+                    Shape = ConnectorShape.Circle,
+                    ConnectorColor = Color.LimeGreen,
+                    DataType = "object"
+                });
+            }
+
+            return op;
+        }
+
+        public void Save(OperationViewModel vm, NodeData data)
+        {
+            data.NodeType = "System";
+            data.SystemOp = nameof(SystemOperations.DESERIALIZE);
+            if (vm is DeserializeOperationViewModel desVm)
+            {
+                data.ParseJsonTargetType = desVm.SelectedTargetType ?? "object";
+            }
+        }
+    }
+}

Examples/Nodify.Calculator/NodeHandlers/NodeHandlerRegistry.cs

@@ -43,6 +43,7 @@ namespace Nodify.Calculator.NodeHandlers
             _handlers.Add(new CopyHandler());
             _handlers.Add(new SplitHandler());
             _handlers.Add(new ParseJsonHandler());
+            _handlers.Add(new DeserializeHandler());
             _handlers.Add(new ListAddHandler());
             _handlers.Add(new ListRemoveHandler());
             _handlers.Add(new ListUpdateHandler());
@@ -90,6 +91,7 @@ namespace Nodify.Calculator.NodeHandlers
                 KnotOperationViewModel => _handlers.OfType<KnotHandler>().FirstOrDefault(),
                 StringConcatOperationViewModel => _handlers.OfType<StringConcatHandler>().FirstOrDefault(),
                 ParseJsonOperationViewModel => _handlers.OfType<ParseJsonHandler>().FirstOrDefault(),
+                DeserializeOperationViewModel => _handlers.OfType<DeserializeHandler>().FirstOrDefault(),
                 FunctionOperationViewModel => _handlers.OfType<FunctionHandler>().FirstOrDefault(),
                 AuthOperationViewModel => _handlers.OfType<AuthHandler>().FirstOrDefault(),
                 TakeOperationViewModel => _handlers.OfType<TakeHandler>().FirstOrDefault(),