Beispiel #1
0
        /// <summary>
        ///     Collapse a set of nodes in a given workspace.
        /// </summary>
        /// <param name="selectedNodes"> The function definition for the user-defined node </param>
        /// <param name="currentWorkspace"> The workspace where</param>
        /// <param name="isTestMode"></param>
        /// <param name="args"></param>
        public CustomNodeWorkspaceModel Collapse(
            IEnumerable<NodeModel> selectedNodes, WorkspaceModel currentWorkspace,
            bool isTestMode, FunctionNamePromptEventArgs args)
        {
            var selectedNodeSet = new HashSet<NodeModel>(selectedNodes);
            // Note that undoable actions are only recorded for the "currentWorkspace", 
            // the nodes which get moved into "newNodeWorkspace" are not recorded for undo,
            // even in the new workspace. Their creations will simply be treated as part of
            // the opening of that new workspace (i.e. when a user opens a file, she will 
            // not expect the nodes that show up to be undoable).
            // 
            // After local nodes are moved into "newNodeWorkspace" as the result of 
            // conversion, if user performs an undo, new set of nodes will be created in 
            // "currentWorkspace" (not moving those nodes in the "newNodeWorkspace" back 
            // into "currentWorkspace"). In another word, undo recording is on a per-
            // workspace basis, it does not work across different workspaces.
            // 
            UndoRedoRecorder undoRecorder = currentWorkspace.UndoRecorder;

            CustomNodeWorkspaceModel newWorkspace;

            using (undoRecorder.BeginActionGroup())
            {
                #region Determine Inputs and Outputs

                //Step 1: determine which nodes will be inputs to the new node
                var inputs =
                    new HashSet<Tuple<NodeModel, int, Tuple<int, NodeModel>>>(
                        selectedNodeSet.SelectMany(
                            node =>
                                Enumerable.Range(0, node.InPortData.Count)
                                .Where(node.HasConnectedInput)
                                .Select(data => Tuple.Create(node, data, node.InputNodes[data]))
                                .Where(input => !selectedNodeSet.Contains(input.Item3.Item2))));

                var outputs =
                    new HashSet<Tuple<NodeModel, int, Tuple<int, NodeModel>>>(
                        selectedNodeSet.SelectMany(
                            node =>
                                Enumerable.Range(0, node.OutPortData.Count)
                                .Where(node.HasOutput)
                                .SelectMany(
                                    data =>
                                        node.OutputNodes[data].Where(
                                            output => !selectedNodeSet.Contains(output.Item2))
                                        .Select(output => Tuple.Create(node, data, output)))));

                #endregion

                #region Detect 1-node holes (higher-order function extraction)

                Log(Properties.Resources.CouldNotRepairOneNodeHoles, WarningLevel.Mild);
                // http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-5603

                //var curriedNodeArgs =
                //    new HashSet<NodeModel>(
                //        inputs.Select(x => x.Item3.Item2)
                //            .Intersect(outputs.Select(x => x.Item3.Item2))).Select(
                //                outerNode =>
                //                {
                //                    //var node = new Apply1();
                //                    var node = newNodeWorkspace.AddNode<Apply1>();
                //                    node.SetNickNameFromAttribute();

                //                    node.DisableReporting();

                //                    node.X = outerNode.X;
                //                    node.Y = outerNode.Y;

                //                    //Fetch all input ports
                //                    // in order
                //                    // that have inputs
                //                    // and whose input comes from an inner node
                //                    List<int> inPortsConnected =
                //                        Enumerable.Range(0, outerNode.InPortData.Count)
                //                            .Where(
                //                                x =>
                //                                    outerNode.HasInput(x)
                //                                        && selectedNodeSet.Contains(
                //                                            outerNode.Inputs[x].Item2))
                //                            .ToList();

                //                    var nodeInputs =
                //                        outputs.Where(output => output.Item3.Item2 == outerNode)
                //                            .Select(
                //                                output =>
                //                                    new
                //                                    {
                //                                        InnerNodeInputSender = output.Item1,
                //                                        OuterNodeInPortData = output.Item3.Item1
                //                                    })
                //                            .ToList();

                //                    nodeInputs.ForEach(_ => node.AddInput());

                //                    node.RegisterAllPorts();

                //                    return
                //                        new
                //                        {
                //                            OuterNode = outerNode,
                //                            InnerNode = node,
                //                            Outputs =
                //                                inputs.Where(
                //                                    input => input.Item3.Item2 == outerNode)
                //                                    .Select(input => input.Item3.Item1),
                //                            Inputs = nodeInputs,
                //                            OuterNodePortDataList = inPortsConnected
                //                        };
                //                }).ToList();

                #endregion

                #region UI Positioning Calculations

                double avgX = selectedNodeSet.Average(node => node.X);
                double avgY = selectedNodeSet.Average(node => node.Y);

                double leftMost = selectedNodeSet.Min(node => node.X);
                double topMost = selectedNodeSet.Min(node => node.Y);
                double rightMost = selectedNodeSet.Max(node => node.X + node.Width);

                double leftShift = leftMost - 250;

                #endregion

                #region Handle full selected connectors

                // Step 2: Determine all the connectors whose start/end owners are 
                // both in the selection set, and then move them from the current 
                // workspace into the new workspace.

                var fullySelectedConns = new HashSet<ConnectorModel>(
                    currentWorkspace.Connectors.Where(
                        conn =>
                        {
                            bool startSelected = selectedNodeSet.Contains(conn.Start.Owner);
                            bool endSelected = selectedNodeSet.Contains(conn.End.Owner);
                            return startSelected && endSelected;
                        }));

                foreach (var connector in fullySelectedConns)
                {
                    undoRecorder.RecordDeletionForUndo(connector);
                    connector.Delete();
                }

                #endregion

                #region Handle partially selected connectors

                // Step 3: Partially selected connectors (either one of its start 
                // and end owners is in the selection) are to be destroyed.

                var partiallySelectedConns =
                    currentWorkspace.Connectors.Where(
                        conn =>
                            selectedNodeSet.Contains(conn.Start.Owner)
                                || selectedNodeSet.Contains(conn.End.Owner)).ToList();

                foreach (var connector in partiallySelectedConns)
                {
                    undoRecorder.RecordDeletionForUndo(connector);
                    connector.Delete();
                }

                #endregion

                #region Transfer nodes and connectors to new workspace

                var newNodes = new List<NodeModel>();
                var newAnnotations = new List<AnnotationModel>();
            
                // Step 4: move all nodes to new workspace remove from old
                // PB: This could be more efficiently handled by a copy paste, but we
                // are preservering the node 
                foreach (var node in selectedNodeSet)
                {                   
                    undoRecorder.RecordDeletionForUndo(node);
                    currentWorkspace.RemoveNode(node);

                    // Assign a new guid to this node, otherwise when node is
                    // compiled to AST, literally it is still in global scope
                    // instead of in function scope.
                    node.GUID = Guid.NewGuid();
                    node.RenderPackages.Clear();

                    // shift nodes
                    node.X = node.X - leftShift;
                    node.Y = node.Y - topMost;
                 
                    newNodes.Add(node);
                }

                //Copy the group from newNodes
                foreach (var group in DynamoSelection.Instance.Selection.OfType<AnnotationModel>())
                {
                    undoRecorder.RecordDeletionForUndo(group);
                    currentWorkspace.RemoveGroup(group);

                    group.GUID = Guid.NewGuid();
                    group.SelectedModels = group.DeletedModelBases;
                    newAnnotations.Add(group);
                }


                foreach (var conn in fullySelectedConns)
                {
                    ConnectorModel.Make(conn.Start.Owner, conn.End.Owner, conn.Start.Index, conn.End.Index);
                }

                #endregion

                #region Process inputs

                var inConnectors = new List<Tuple<NodeModel, int>>();
                var uniqueInputSenders = new Dictionary<Tuple<NodeModel, int>, Symbol>();

                //Step 3: insert variables (reference step 1)
                foreach (var input in Enumerable.Range(0, inputs.Count).Zip(inputs, Tuple.Create))
                {
                    int inputIndex = input.Item1;

                    NodeModel inputReceiverNode = input.Item2.Item1;
                    int inputReceiverData = input.Item2.Item2;

                    NodeModel inputNode = input.Item2.Item3.Item2;
                    int inputData = input.Item2.Item3.Item1;

                    Symbol node;

                    var key = Tuple.Create(inputNode, inputData);
                    if (uniqueInputSenders.ContainsKey(key))
                    {
                        node = uniqueInputSenders[key];
                    }
                    else
                    {
                        inConnectors.Add(Tuple.Create(inputNode, inputData));

                        node = new Symbol
                        {
                            InputSymbol = inputReceiverNode.InPortData[inputReceiverData].NickName,
                            X = 0
                        };

                        // Try to figure out the type of input of custom node 
                        // from the type of input of selected node. There are
                        // two kinds of nodes whose input type are available:
                        // function node and custom node. 
                        List<Library.TypedParameter> parameters = null;

                        if (inputReceiverNode is Function) 
                        {
                            var func = inputReceiverNode as Function; 
                            parameters =  func.Controller.Definition.Parameters.ToList(); 
                        }
                        else if (inputReceiverNode is DSFunctionBase)
                        {
                            var dsFunc = inputReceiverNode as DSFunctionBase;
                            var funcDesc = dsFunc.Controller.Definition;
                            parameters = funcDesc.Parameters.ToList();

                            if (funcDesc.Type == DSEngine.FunctionType.InstanceMethod ||
                                funcDesc.Type == DSEngine.FunctionType.InstanceProperty)
                            {
                                var dummyType = new ProtoCore.Type() { Name = funcDesc.ClassName };
                                var instanceParam = new TypedParameter(funcDesc.ClassName, dummyType);
                                parameters.Insert(0, instanceParam);
                            }
                        }

                        // so the input of custom node has format 
                        //    input_var_name : type
                        if (parameters != null && parameters.Count() > inputReceiverData)
                        {
                            var typeName = parameters[inputReceiverData].DisplayTypeName;
                            if (!string.IsNullOrEmpty(typeName))
                            {
                                node.InputSymbol += " : " + typeName;
                            }
                        }

                        node.SetNickNameFromAttribute();
                        node.Y = inputIndex*(50 + node.Height);

                        uniqueInputSenders[key] = node;

                        newNodes.Add(node);
                    }

                    //var curriedNode = curriedNodeArgs.FirstOrDefault(x => x.OuterNode == inputNode);

                    //if (curriedNode == null)
                    //{
                    ConnectorModel.Make(node, inputReceiverNode, 0, inputReceiverData);
                    //}
                    //else
                    //{
                    //    //Connect it to the applier
                    //    newNodeWorkspace.AddConnection(node, curriedNode.InnerNode, 0, 0);

                    //    //Connect applier to the inner input receive
                    //    newNodeWorkspace.AddConnection(
                    //        curriedNode.InnerNode,
                    //        inputReceiverNode,
                    //        0,
                    //        inputReceiverData);
                    //}
                }

                #endregion

                #region Process outputs

                //List of all inner nodes to connect an output. Unique.
                var outportList = new List<Tuple<NodeModel, int>>();

                var outConnectors = new List<Tuple<NodeModel, int, int>>();

                int i = 0;
                if (outputs.Any())
                {
                    foreach (var output in outputs)
                    {
                        if (outportList.All(x => !(x.Item1 == output.Item1 && x.Item2 == output.Item2)))
                        {
                            NodeModel outputSenderNode = output.Item1;
                            int outputSenderData = output.Item2;

                            //NodeModel outputReceiverNode = output.Item3.Item2;

                            //if (curriedNodeArgs.Any(x => x.OuterNode == outputReceiverNode))
                            //    continue;

                            outportList.Add(Tuple.Create(outputSenderNode, outputSenderData));

                            //Create Symbol Node
                            var node = new Output
                            {
                                Symbol = outputSenderNode.OutPortData[outputSenderData].NickName,
                                X = rightMost + 75 - leftShift
                            };

                            node.Y = i*(50 + node.Height);

                            node.SetNickNameFromAttribute();

                            newNodes.Add(node);
                            ConnectorModel.Make(outputSenderNode, node, outputSenderData, 0);

                            i++;
                        }
                    }

                    //Connect outputs to new node
                    outConnectors.AddRange(
                        from output in outputs
                        let outputSenderNode = output.Item1
                        let outputSenderData = output.Item2
                        let outputReceiverData = output.Item3.Item1
                        let outputReceiverNode = output.Item3.Item2
                        select
                            Tuple.Create(
                                outputReceiverNode,
                                outportList.FindIndex(
                                    x => x.Item1 == outputSenderNode && x.Item2 == outputSenderData),
                                outputReceiverData));
                }
                else
                {
                    foreach (var hanging in
                        selectedNodeSet.SelectMany(
                            node =>
                                Enumerable.Range(0, node.OutPortData.Count)
                                .Where(port => !node.HasOutput(port))
                                .Select(port => new { node, port })).Distinct())
                    {
                        //Create Symbol Node
                        var node = new Output
                        {
                            Symbol = hanging.node.OutPortData[hanging.port].NickName,
                            X = rightMost + 75 - leftShift
                        };
                        node.Y = i*(50 + node.Height);
                        node.SetNickNameFromAttribute();

                        newNodes.Add(node);
                        ConnectorModel.Make(hanging.node, node, hanging.port, 0);

                        i++;
                    }
                }

                #endregion

                var newId = Guid.NewGuid();
                newWorkspace = new CustomNodeWorkspaceModel(
                    nodeFactory,
                    newNodes,
                    Enumerable.Empty<NoteModel>(),
                    newAnnotations,
                    Enumerable.Empty<PresetModel>(),
                    new WorkspaceInfo()
                    {
                        X = 0,
                        Y = 0,
                        Name = args.Name,
                        Category = args.Category,
                        Description = args.Description,
                        ID = newId.ToString(),
                        FileName = string.Empty
                    },
                    currentWorkspace.ElementResolver);
                
                newWorkspace.HasUnsavedChanges = true;

                RegisterCustomNodeWorkspace(newWorkspace);

                var collapsedNode = CreateCustomNodeInstance(newId, isTestMode: isTestMode);
                collapsedNode.X = avgX;
                collapsedNode.Y = avgY;
                currentWorkspace.AddNode(collapsedNode, centered: false);
                undoRecorder.RecordCreationForUndo(collapsedNode);

                foreach (var connector in
                    inConnectors.Select((x, idx) => new { node = x.Item1, from = x.Item2, to = idx })
                        .Select(
                            nodeTuple =>
                                ConnectorModel.Make(
                                    nodeTuple.node,
                                    collapsedNode,
                                    nodeTuple.@from,
                                    nodeTuple.to))
                        .Where(connector => connector != null))
                {
                    undoRecorder.RecordCreationForUndo(connector);
                }

                foreach (var connector in
                    outConnectors.Select(
                        nodeTuple =>
                            ConnectorModel.Make(
                                collapsedNode,
                                nodeTuple.Item1,
                                nodeTuple.Item2,
                                nodeTuple.Item3)).Where(connector => connector != null))
                {
                    undoRecorder.RecordCreationForUndo(connector);
                }
            }
            return newWorkspace;
        }
Beispiel #2
0
        /// <summary>
        ///     Collapse a set of nodes in a given workspace.  Has the side effects of prompting the user
        ///     first in order to obtain the name and category for the new node, 
        ///     writes the function to a dyf file, adds it to the FunctionDict, adds it to search, and compiles and 
        ///     places the newly created symbol (defining a lambda) in the Controller's FScheme Environment.  
        /// </summary>
        /// <param name="selectedNodes"> The function definition for the user-defined node </param>
        /// <param name="currentWorkspace"> The workspace where</param>
        public static void Collapse(IEnumerable<NodeModel> selectedNodes, WorkspaceModel currentWorkspace, FunctionNamePromptEventArgs args=null)
        {
            var selectedNodeSet = new HashSet<NodeModel>(selectedNodes);

            if (args == null || !args.Success)
            {
                args = new FunctionNamePromptEventArgs();
                dynSettings.Controller.DynamoModel.OnRequestsFunctionNamePrompt(null, args);

                //if (!dynSettings.Controller.DynamoViewModel.ShowNewFunctionDialog(ref newNodeName, ref newNodeCategory))
                if (!args.Success)
                {
                    return;
                }
            }

            var newNodeWorkspace = new CustomNodeWorkspaceModel(args.Name, args.Category, args.Description, 0, 0)
            {
                WatchChanges = false,
                HasUnsavedChanges = true
            };

            var newNodeDefinition = new FunctionDefinition(Guid.NewGuid())
            {
                WorkspaceModel = newNodeWorkspace
            };

            currentWorkspace.DisableReporting();

            #region Determine Inputs and Outputs

            //Step 1: determine which nodes will be inputs to the new node
            var inputs = new HashSet<Tuple<NodeModel, int, Tuple<int, NodeModel>>>(
                selectedNodeSet.SelectMany(
                    node => Enumerable.Range(0, node.InPortData.Count).Where(node.HasConnectedInput)
                        .Select(data => Tuple.Create(node, data, node.Inputs[data]))
                        .Where(input => !selectedNodeSet.Contains(input.Item3.Item2))));

            var outputs = new HashSet<Tuple<NodeModel, int, Tuple<int, NodeModel>>>(
                selectedNodeSet.SelectMany(
                    node => Enumerable.Range(0, node.OutPortData.Count).Where(node.HasOutput).SelectMany(
                        data => node.Outputs[data]
                                    .Where(output => !selectedNodeSet.Contains(output.Item2))
                                    .Select(output => Tuple.Create(node, data, output)))));

            #endregion

            #region Detect 1-node holes (higher-order function extraction)

            var curriedNodeArgs =
                new HashSet<NodeModel>(
                    inputs
                        .Select(x => x.Item3.Item2)
                        .Intersect(outputs.Select(x => x.Item3.Item2)))
                    .Select(
                        outerNode =>
                        {
                            var node = new Apply1();

                            //MVVM : Don't make direct reference to view here
                            //MVVM: no reference to view here
                            //dynNodeView nodeUI = node.NodeUI;

                            var elNameAttrib =
                                node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), true)[0] as
                                NodeNameAttribute;
                            if (elNameAttrib != null)
                            {
                                node.NickName = elNameAttrib.Name;
                            }

                            node.GUID = Guid.NewGuid();

                            //store the element in the elements list
                            newNodeWorkspace.Nodes.Add(node);
                            node.WorkSpace = newNodeWorkspace;

                            node.DisableReporting();

                            //MVVM : Can't set view location here

                            //dynSettings.Bench.WorkBench.Children.Add(nodeUI);

                            //Place it in an appropriate spot
                            //Canvas.SetLeft(nodeUI, Canvas.GetLeft(outerNode.NodeUI));
                            //Canvas.SetTop(nodeUI, Canvas.GetTop(outerNode.NodeUI));
                            node.X = outerNode.X;
                            node.Y = outerNode.Y;

                            //Fetch all input ports
                            // in order
                            // that have inputs
                            // and whose input comes from an inner node
                            List<int> inPortsConnected = Enumerable.Range(0, outerNode.InPortData.Count)
                                                                   .Where(
                                                                       x =>
                                                                       outerNode.HasInput(x) &&
                                                                       selectedNodeSet.Contains(
                                                                           outerNode.Inputs[x].Item2))
                                                                   .ToList();

                            var nodeInputs = outputs
                                .Where(output => output.Item3.Item2 == outerNode)
                                .Select(
                                    output =>
                                    new
                                    {
                                        InnerNodeInputSender = output.Item1,
                                        OuterNodeInPortData = output.Item3.Item1
                                    }).ToList();

                            nodeInputs.ForEach(_ => node.AddInput());

                            node.RegisterAllPorts();

                            return new
                            {
                                OuterNode = outerNode,
                                InnerNode = node,
                                Outputs = inputs.Where(input => input.Item3.Item2 == outerNode)
                                                .Select(input => input.Item3.Item1),
                                Inputs = nodeInputs,
                                OuterNodePortDataList = inPortsConnected
                            };
                        }).ToList();

            #endregion

            #region UI Positioning Calculations

            double avgX = selectedNodeSet.Average(node => node.X);
            double avgY = selectedNodeSet.Average(node => node.Y);

            double leftMost = selectedNodeSet.Min(node => node.X);
            double topMost = selectedNodeSet.Min(node => node.Y);
            double rightMost = selectedNodeSet.Max(node => node.X + node.Width);

            #endregion

            #region Move selection to new workspace

            var connectors = new HashSet<ConnectorModel>(currentWorkspace.Connectors.Where(
                                                                conn => selectedNodeSet.Contains(conn.Start.Owner)
                                                                    && selectedNodeSet.Contains(conn.End.Owner)));

            //Step 2: move all nodes to new workspace
            //  remove from old
            foreach (var ele in selectedNodeSet)
            {
                ele.SaveResult = false;
                currentWorkspace.Nodes.Remove(ele);
                ele.WorkSpace = newNodeWorkspace;
            }
            foreach (var ele in connectors)
            {
                currentWorkspace.Connectors.Remove(ele);
            }

            //  add to new
            newNodeWorkspace.Nodes.AddRange(selectedNodeSet);
            newNodeWorkspace.Connectors.AddRange(connectors);

            double leftShift = leftMost - 250;
            foreach (NodeModel node in newNodeWorkspace.Nodes)
            {
                node.X = node.X - leftShift;
                node.Y = node.Y - topMost;
            }

            #endregion

            #region Insert new node into the current workspace

            //Step 5: insert new node into original workspace
            //var collapsedNode = dynSettings.Controller.DynamoViewModel.CreateFunction(
            //    inputs.Select(x => x.Item1.InPortData[x.Item2].NickName),
            //    outputs
            //        .Where(x => !curriedNodeArgs.Any(y => y.OuterNode == x.Item3.Item2))
            //        .Select(x => x.Item1.OutPortData[x.Item2].NickName),
            //    newNodeDefinition);

            //collapsedNode.GUID = Guid.NewGuid();

            //currentWorkspace.Nodes.Add(collapsedNode);
            //collapsedNode.WorkSpace = currentWorkspace;

            //collapsedNode.X = avgX;
            //collapsedNode.Y = avgY;

            #endregion

            #region Destroy all hanging connectors

            //Step 6: connect inputs and outputs

            var removeConnectors = currentWorkspace.Connectors.Where(c =>
                                                                     selectedNodeSet.Contains(c.Start.Owner) ||
                                                                     selectedNodeSet.Contains(c.End.Owner))
                                                   .ToList();
            foreach (ConnectorModel connector in removeConnectors)
            {
                connector.NotifyConnectedPortsOfDeletion();
                currentWorkspace.Connectors.Remove(connector);
            }

            #endregion

            newNodeWorkspace.Nodes.ToList().ForEach(x => x.DisableReporting());

            var inConnectors = new List<Tuple<NodeModel, int, int>>();

            #region Process inputs

            var uniqueInputSenders = new Dictionary<Tuple<NodeModel, int>, Symbol>();

            //Step 3: insert variables (reference step 1)
            foreach (var input in Enumerable.Range(0, inputs.Count).Zip(inputs, Tuple.Create))
            {
                int inputIndex = input.Item1;

                NodeModel inputReceiverNode = input.Item2.Item1;
                int inputReceiverData = input.Item2.Item2;

                NodeModel inputNode = input.Item2.Item3.Item2;
                int inputData = input.Item2.Item3.Item1;

                Symbol node;

                var key = Tuple.Create(inputNode, inputData);
                if (uniqueInputSenders.ContainsKey(key))
                {
                    node = uniqueInputSenders[key];
                }
                else
                {
                    //MVVM : replace NodeUI reference with node
                    inConnectors.Add(Tuple.Create(inputNode, inputData, inputIndex));

                    //Create Symbol Node
                    node = new Symbol
                    {
                        InputSymbol = inputReceiverNode.InPortData[inputReceiverData].NickName
                    };

                    //MVVM : Don't make direct reference to view here
                    //dynNodeView nodeUI = node.NodeUI;

                    var elNameAttrib =
                        node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), true)[0] as NodeNameAttribute;
                    if (elNameAttrib != null)
                    {
                        node.NickName = elNameAttrib.Name;
                    }

                    node.GUID = Guid.NewGuid();

                    //store the element in the elements list
                    newNodeWorkspace.Nodes.Add(node);
                    node.WorkSpace = newNodeWorkspace;

                    node.DisableReporting();

                    node.X = 0;
                    node.Y = inputIndex * (50 + node.Height);

                    uniqueInputSenders[key] = node;
                }

                var curriedNode = curriedNodeArgs.FirstOrDefault(x => x.OuterNode == inputNode);

                if (curriedNode == null)
                {
                    var conn1 = ConnectorModel.Make(node,
                                                  inputReceiverNode,
                                                  0,
                                                  inputReceiverData,
                                                  PortType.INPUT);

                    if (conn1 != null)
                        newNodeWorkspace.Connectors.Add(conn1);
                }
                else
                {
                    //Connect it to the applier
                    var conn = ConnectorModel.Make(node,
                                                     curriedNode.InnerNode,
                                                     0,
                                                     0,
                                                     PortType.INPUT);
                    if (conn != null)
                        newNodeWorkspace.Connectors.Add(conn);

                    //Connect applier to the inner input receive
                    var conn2 = ConnectorModel.Make(
                        curriedNode.InnerNode,
                        inputReceiverNode,
                        0,
                        inputReceiverData,
                        PortType.INPUT);

                    if (conn2 != null)
                        newNodeWorkspace.Connectors.Add(conn2);
                }
            }

            #endregion

            #region Process outputs

            //List of all inner nodes to connect an output. Unique.
            var outportList = new List<Tuple<NodeModel, int>>();

            var outConnectors = new List<Tuple<NodeModel, int, int>>();

            int i = 0;
            foreach (var output in outputs)
            {
                if (outportList.All(x => !(x.Item1 == output.Item1 && x.Item2 == output.Item2)))
                {
                    NodeModel outputSenderNode = output.Item1;
                    int outputSenderData = output.Item2;
                    NodeModel outputReceiverNode = output.Item3.Item2;

                    if (curriedNodeArgs.Any(x => x.OuterNode == outputReceiverNode))
                        continue;

                    outportList.Add(Tuple.Create(outputSenderNode, outputSenderData));

                    //Create Symbol Node
                    var node = new Output
                    {
                        Symbol = outputSenderNode.OutPortData[outputSenderData].NickName
                    };

                    //dynNodeView nodeUI = node.NodeUI;

                    var elNameAttrib =
                        node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), false)[0] as NodeNameAttribute;
                    if (elNameAttrib != null)
                    {
                        node.NickName = elNameAttrib.Name;
                    }

                    node.GUID = Guid.NewGuid();

                    //store the element in the elements list
                    newNodeWorkspace.Nodes.Add(node);
                    node.WorkSpace = newNodeWorkspace;

                    node.DisableReporting();

                    node.X = rightMost + 75 - leftShift;
                    node.Y = i*(50 + node.Height);

                    var conn = ConnectorModel.Make(
                                outputSenderNode,
                                node,
                                outputSenderData,
                                0,
                                PortType.INPUT);

                    if (conn != null)
                        newNodeWorkspace.Connectors.Add(conn);

                    i++;
                }
            }

            //Connect outputs to new node
            foreach (var output in outputs)
            {
                //Node to be connected to in CurrentWorkspace
                NodeModel outputSenderNode = output.Item1;

                //Port to be connected to on outPutNode_outer
                int outputSenderData = output.Item2;

                int outputReceiverData = output.Item3.Item1;
                NodeModel outputReceiverNode = output.Item3.Item2;

                var curriedNode = curriedNodeArgs.FirstOrDefault(
                    x => x.OuterNode == outputReceiverNode);

                if (curriedNode == null)
                {
                    // we create the connectors in the current space later
            //MVVM : replaced multiple dynNodeView refrences with dynNode
                    outConnectors.Add(
                        Tuple.Create(
                            outputReceiverNode,
                            outportList.FindIndex(
                                x => x.Item1 == outputSenderNode && x.Item2 == outputSenderData),
                            outputReceiverData));
                }
                else
                {
                    int targetPort = curriedNode.Inputs
                                                .First(
                                                    x => x.InnerNodeInputSender == outputSenderNode)
                                                .OuterNodeInPortData;

                    int targetPortIndex = curriedNode.OuterNodePortDataList.IndexOf(targetPort);

                    //Connect it (new dynConnector)

                    var conn = ConnectorModel.Make(
                        outputSenderNode,
                        curriedNode.InnerNode,
                        outputSenderData,
                        targetPortIndex + 1,
                        PortType.INPUT);

                    if (conn != null)
                        newNodeWorkspace.Connectors.Add(conn);
                }
            }

            #endregion

            // save and load the definition from file
            newNodeDefinition.SyncWithWorkspace(true, true);
            dynSettings.Controller.DynamoModel.Workspaces.Add(newNodeWorkspace);

            string name = newNodeDefinition.FunctionId.ToString();
            var collapsedNode = dynSettings.Controller.DynamoModel.CreateNode(avgX, avgY, name);

            // place the node as intended, not centered
            collapsedNode.X = avgX;
            collapsedNode.Y = avgY;

            collapsedNode.DisableReporting();

            foreach (var nodeTuple in inConnectors)
            {
                var conn = ConnectorModel.Make(
                                    nodeTuple.Item1,
                                    collapsedNode,
                                    nodeTuple.Item2,
                                    nodeTuple.Item3,
                                    PortType.INPUT);

                if (conn != null)
                    currentWorkspace.Connectors.Add(conn);
            }

            foreach (var nodeTuple in outConnectors)
            {

                var conn = ConnectorModel.Make(
                                    collapsedNode,
                                    nodeTuple.Item1,
                                    nodeTuple.Item2,
                                    nodeTuple.Item3,
                                    PortType.INPUT);

                if (conn != null)
                    currentWorkspace.Connectors.Add(conn);
            }

            collapsedNode.EnableReporting();
            currentWorkspace.EnableReporting();

            newNodeWorkspace.WatchChanges = true;
        }
Beispiel #3
0
        public void ModificationUITesting()
        {
            // Re-use code for creating a custom node
            CanCreateAndPlaceNewCustomNode();

            var instance = CurrentDynamoModel.CurrentWorkspace.Nodes.First() as Function;
            SelectTabByGuid(instance.Definition.FunctionId);

            var currentInPortAmt = 0;
            var currentOutPortAmt = 0;

            #region Adding
            Func<string, Symbol> addInput = label =>
            {
                var node = new Symbol();
                CurrentDynamoModel.ExecuteCommand(new DynamoModel.CreateNodeCommand(node, 0, 0, true, true));
                node.InputSymbol = label;

                Assert.AreEqual(++currentInPortAmt, instance.InPorts.Count);
                Assert.AreEqual(label, instance.InPorts.Last().PortName);

                return node;
            };

            Func<string, Output> addOutput = label =>
            {
                var node = new Output();

                CurrentDynamoModel.ExecuteCommand(new DynamoModel.CreateNodeCommand(node, 0, 0, true, true));
                node.Symbol = label;

                Assert.AreEqual(++currentOutPortAmt, instance.OutPorts.Count);
                Assert.AreEqual(label, instance.OutPorts.Last().PortName);

                return node;
            };
            #endregion

            #region Renaming
            Action<Symbol, int, string> renameInput = (input, idx, s) =>
            {
                input.InputSymbol = s;
                Assert.AreEqual(s, instance.InPorts[idx].PortName);
            };

            Action<Output, int, string> renameOutput = (output, idx, s) =>
            {
                output.Symbol = s;
                Assert.AreEqual(s, instance.OutPorts[idx].PortName);
            };
            #endregion

            #region Deleting
            Action<NodeModel> deleteNode = nodeModel =>
            {
                DynamoSelection.Instance.ClearSelection();
                CurrentDynamoModel.AddToSelection(nodeModel);
                var command = new DynamoModel.DeleteModelCommand(Guid.Empty);
                CurrentDynamoModel.ExecuteCommand(command);
            };

            Action<Symbol> deleteInput = input =>
            {
                deleteNode(input);
                Assert.AreEqual(--currentInPortAmt, instance.InPorts.Count);
            };

            Action<Output> deleteOutput = output =>
            {
                deleteNode(output);
                Assert.AreEqual(--currentOutPortAmt, instance.OutPorts.Count);
            };
            #endregion

            //Add some outputs
            var out1 = addOutput("output1");
            var out2 = addOutput("output2");

            //Add some inputs
            var in1 = addInput("input1");
            var in2 = addInput("input2");

            //Change some names
            renameInput(in1, 0, "test");
            renameOutput(out2, 1, "something");

            //Delete some ports
            deleteInput(in2);
            deleteOutput(out1);
        }
Beispiel #4
0
        /// <summary>
        ///     Collapse a set of nodes in a given workspace.
        /// </summary>
        /// <param name="selectedNodes"> The function definition for the user-defined node </param>
        /// <param name="currentWorkspace"> The workspace where</param>
        /// <param name="isTestMode"></param>
        /// <param name="args"></param>
        public CustomNodeWorkspaceModel Collapse(
            IEnumerable <NodeModel> selectedNodes, WorkspaceModel currentWorkspace,
            bool isTestMode, FunctionNamePromptEventArgs args)
        {
            var selectedNodeSet = new HashSet <NodeModel>(selectedNodes);
            // Note that undoable actions are only recorded for the "currentWorkspace",
            // the nodes which get moved into "newNodeWorkspace" are not recorded for undo,
            // even in the new workspace. Their creations will simply be treated as part of
            // the opening of that new workspace (i.e. when a user opens a file, she will
            // not expect the nodes that show up to be undoable).
            //
            // After local nodes are moved into "newNodeWorkspace" as the result of
            // conversion, if user performs an undo, new set of nodes will be created in
            // "currentWorkspace" (not moving those nodes in the "newNodeWorkspace" back
            // into "currentWorkspace"). In another word, undo recording is on a per-
            // workspace basis, it does not work across different workspaces.
            //
            UndoRedoRecorder undoRecorder = currentWorkspace.UndoRecorder;

            CustomNodeWorkspaceModel newWorkspace;

            using (undoRecorder.BeginActionGroup())
            {
                #region Determine Inputs and Outputs

                //Step 1: determine which nodes will be inputs to the new node
                var inputs =
                    new HashSet <Tuple <NodeModel, int, Tuple <int, NodeModel> > >(
                        selectedNodeSet.SelectMany(
                            node =>
                            Enumerable.Range(0, node.InPortData.Count)
                            .Where(node.HasConnectedInput)
                            .Select(data => Tuple.Create(node, data, node.Inputs[data]))
                            .Where(input => !selectedNodeSet.Contains(input.Item3.Item2))));

                var outputs =
                    new HashSet <Tuple <NodeModel, int, Tuple <int, NodeModel> > >(
                        selectedNodeSet.SelectMany(
                            node =>
                            Enumerable.Range(0, node.OutPortData.Count)
                            .Where(node.HasOutput)
                            .SelectMany(
                                data =>
                                node.Outputs[data].Where(
                                    output => !selectedNodeSet.Contains(output.Item2))
                                .Select(output => Tuple.Create(node, data, output)))));

                #endregion

                #region Detect 1-node holes (higher-order function extraction)

                Log(Properties.Resources.CouldNotRepairOneNodeHoles, WarningLevel.Mild);
                // http://adsk-oss.myjetbrains.com/youtrack/issue/MAGN-5603

                //var curriedNodeArgs =
                //    new HashSet<NodeModel>(
                //        inputs.Select(x => x.Item3.Item2)
                //            .Intersect(outputs.Select(x => x.Item3.Item2))).Select(
                //                outerNode =>
                //                {
                //                    //var node = new Apply1();
                //                    var node = newNodeWorkspace.AddNode<Apply1>();
                //                    node.SetNickNameFromAttribute();

                //                    node.DisableReporting();

                //                    node.X = outerNode.X;
                //                    node.Y = outerNode.Y;

                //                    //Fetch all input ports
                //                    // in order
                //                    // that have inputs
                //                    // and whose input comes from an inner node
                //                    List<int> inPortsConnected =
                //                        Enumerable.Range(0, outerNode.InPortData.Count)
                //                            .Where(
                //                                x =>
                //                                    outerNode.HasInput(x)
                //                                        && selectedNodeSet.Contains(
                //                                            outerNode.Inputs[x].Item2))
                //                            .ToList();

                //                    var nodeInputs =
                //                        outputs.Where(output => output.Item3.Item2 == outerNode)
                //                            .Select(
                //                                output =>
                //                                    new
                //                                    {
                //                                        InnerNodeInputSender = output.Item1,
                //                                        OuterNodeInPortData = output.Item3.Item1
                //                                    })
                //                            .ToList();

                //                    nodeInputs.ForEach(_ => node.AddInput());

                //                    node.RegisterAllPorts();

                //                    return
                //                        new
                //                        {
                //                            OuterNode = outerNode,
                //                            InnerNode = node,
                //                            Outputs =
                //                                inputs.Where(
                //                                    input => input.Item3.Item2 == outerNode)
                //                                    .Select(input => input.Item3.Item1),
                //                            Inputs = nodeInputs,
                //                            OuterNodePortDataList = inPortsConnected
                //                        };
                //                }).ToList();

                #endregion

                #region UI Positioning Calculations

                double avgX = selectedNodeSet.Average(node => node.X);
                double avgY = selectedNodeSet.Average(node => node.Y);

                double leftMost  = selectedNodeSet.Min(node => node.X);
                double topMost   = selectedNodeSet.Min(node => node.Y);
                double rightMost = selectedNodeSet.Max(node => node.X + node.Width);

                double leftShift = leftMost - 250;

                #endregion

                #region Handle full selected connectors

                // Step 2: Determine all the connectors whose start/end owners are
                // both in the selection set, and then move them from the current
                // workspace into the new workspace.

                var fullySelectedConns = new HashSet <ConnectorModel>(
                    currentWorkspace.Connectors.Where(
                        conn =>
                {
                    bool startSelected = selectedNodeSet.Contains(conn.Start.Owner);
                    bool endSelected   = selectedNodeSet.Contains(conn.End.Owner);
                    return(startSelected && endSelected);
                }));

                foreach (var connector in fullySelectedConns)
                {
                    undoRecorder.RecordDeletionForUndo(connector);
                    connector.Delete();
                }

                #endregion

                #region Handle partially selected connectors

                // Step 3: Partially selected connectors (either one of its start
                // and end owners is in the selection) are to be destroyed.

                var partiallySelectedConns =
                    currentWorkspace.Connectors.Where(
                        conn =>
                        selectedNodeSet.Contains(conn.Start.Owner) ||
                        selectedNodeSet.Contains(conn.End.Owner)).ToList();

                foreach (var connector in partiallySelectedConns)
                {
                    undoRecorder.RecordDeletionForUndo(connector);
                    connector.Delete();
                }

                #endregion

                #region Transfer nodes and connectors to new workspace

                var newNodes = new List <NodeModel>();

                // Step 4: move all nodes to new workspace remove from old
                // PB: This could be more efficiently handled by a copy paste, but we
                // are preservering the node
                foreach (var node in selectedNodeSet)
                {
                    undoRecorder.RecordDeletionForUndo(node);
                    currentWorkspace.RemoveNode(node);

                    // Assign a new guid to this node, otherwise when node is
                    // compiled to AST, literally it is still in global scope
                    // instead of in function scope.
                    node.GUID = Guid.NewGuid();
                    node.RenderPackages.Clear();

                    // shit nodes
                    node.X = node.X - leftShift;
                    node.Y = node.Y - topMost;

                    newNodes.Add(node);
                }

                foreach (var conn in fullySelectedConns)
                {
                    ConnectorModel.Make(conn.Start.Owner, conn.End.Owner, conn.Start.Index, conn.End.Index);
                }

                #endregion

                #region Process inputs

                var inConnectors       = new List <Tuple <NodeModel, int> >();
                var uniqueInputSenders = new Dictionary <Tuple <NodeModel, int>, Symbol>();

                //Step 3: insert variables (reference step 1)
                foreach (var input in Enumerable.Range(0, inputs.Count).Zip(inputs, Tuple.Create))
                {
                    int inputIndex = input.Item1;

                    NodeModel inputReceiverNode = input.Item2.Item1;
                    int       inputReceiverData = input.Item2.Item2;

                    NodeModel inputNode = input.Item2.Item3.Item2;
                    int       inputData = input.Item2.Item3.Item1;

                    Symbol node;

                    var key = Tuple.Create(inputNode, inputData);
                    if (uniqueInputSenders.ContainsKey(key))
                    {
                        node = uniqueInputSenders[key];
                    }
                    else
                    {
                        inConnectors.Add(Tuple.Create(inputNode, inputData));

                        node = new Symbol
                        {
                            InputSymbol = inputReceiverNode.InPortData[inputReceiverData].NickName,
                            X           = 0
                        };

                        // Try to figure out the type of input of custom node
                        // from the type of input of selected node. There are
                        // two kinds of nodes whose input type are available:
                        // function node and custom node.
                        List <Library.TypedParameter> parameters = null;
                        if (inputReceiverNode is Function)
                        {
                            var func = inputReceiverNode as Function;
                            parameters = func.Controller.Definition.Parameters.ToList();
                        }
                        else if (inputReceiverNode is DSFunctionBase)
                        {
                            var dsFunc = inputReceiverNode as DSFunctionBase;
                            parameters = dsFunc.Controller.Definition.Parameters.ToList();
                        }

                        // so the input of custom node has format
                        //    input_var_name : type
                        if (parameters != null && parameters.Count() > inputReceiverData)
                        {
                            var typeName = parameters[inputReceiverData].DisplayTypeName;
                            if (!string.IsNullOrEmpty(typeName))
                            {
                                node.InputSymbol += " : " + typeName;
                            }
                        }

                        node.SetNickNameFromAttribute();
                        node.Y = inputIndex * (50 + node.Height);

                        uniqueInputSenders[key] = node;

                        newNodes.Add(node);
                    }

                    //var curriedNode = curriedNodeArgs.FirstOrDefault(x => x.OuterNode == inputNode);

                    //if (curriedNode == null)
                    //{
                    ConnectorModel.Make(node, inputReceiverNode, 0, inputReceiverData);
                    //}
                    //else
                    //{
                    //    //Connect it to the applier
                    //    newNodeWorkspace.AddConnection(node, curriedNode.InnerNode, 0, 0);

                    //    //Connect applier to the inner input receive
                    //    newNodeWorkspace.AddConnection(
                    //        curriedNode.InnerNode,
                    //        inputReceiverNode,
                    //        0,
                    //        inputReceiverData);
                    //}
                }

                #endregion

                #region Process outputs

                //List of all inner nodes to connect an output. Unique.
                var outportList = new List <Tuple <NodeModel, int> >();

                var outConnectors = new List <Tuple <NodeModel, int, int> >();

                int i = 0;
                if (outputs.Any())
                {
                    foreach (var output in outputs)
                    {
                        if (outportList.All(x => !(x.Item1 == output.Item1 && x.Item2 == output.Item2)))
                        {
                            NodeModel outputSenderNode = output.Item1;
                            int       outputSenderData = output.Item2;

                            //NodeModel outputReceiverNode = output.Item3.Item2;

                            //if (curriedNodeArgs.Any(x => x.OuterNode == outputReceiverNode))
                            //    continue;

                            outportList.Add(Tuple.Create(outputSenderNode, outputSenderData));

                            //Create Symbol Node
                            var node = new Output
                            {
                                Symbol = outputSenderNode.OutPortData[outputSenderData].NickName,
                                X      = rightMost + 75 - leftShift
                            };

                            node.Y = i * (50 + node.Height);

                            node.SetNickNameFromAttribute();

                            newNodes.Add(node);
                            ConnectorModel.Make(outputSenderNode, node, outputSenderData, 0);

                            i++;
                        }
                    }

                    //Connect outputs to new node
                    outConnectors.AddRange(
                        from output in outputs
                        let outputSenderNode = output.Item1
                                               let outputSenderData = output.Item2
                                                                      let outputReceiverData = output.Item3.Item1
                                                                                               let outputReceiverNode = output.Item3.Item2
                                                                                                                        select
                                                                                                                        Tuple.Create(
                            outputReceiverNode,
                            outportList.FindIndex(
                                x => x.Item1 == outputSenderNode && x.Item2 == outputSenderData),
                            outputReceiverData));
                }
                else
                {
                    foreach (var hanging in
                             selectedNodeSet.SelectMany(
                                 node =>
                                 Enumerable.Range(0, node.OutPortData.Count)
                                 .Where(port => !node.HasOutput(port))
                                 .Select(port => new { node, port })).Distinct())
                    {
                        //Create Symbol Node
                        var node = new Output
                        {
                            Symbol = hanging.node.OutPortData[hanging.port].NickName,
                            X      = rightMost + 75 - leftShift
                        };
                        node.Y = i * (50 + node.Height);
                        node.SetNickNameFromAttribute();

                        newNodes.Add(node);
                        ConnectorModel.Make(hanging.node, node, hanging.port, 0);

                        i++;
                    }
                }

                #endregion

                var newId = Guid.NewGuid();
                newWorkspace = new CustomNodeWorkspaceModel(
                    args.Name,
                    args.Category,
                    args.Description,
                    nodeFactory,
                    newNodes,
                    Enumerable.Empty <NoteModel>(),
                    0,
                    0,
                    newId, currentWorkspace.ElementResolver, string.Empty);

                newWorkspace.HasUnsavedChanges = true;

                RegisterCustomNodeWorkspace(newWorkspace);

                var collapsedNode = CreateCustomNodeInstance(newId, isTestMode: isTestMode);
                collapsedNode.X = avgX;
                collapsedNode.Y = avgY;
                currentWorkspace.AddNode(collapsedNode, centered: false);
                undoRecorder.RecordCreationForUndo(collapsedNode);

                foreach (var connector in
                         inConnectors.Select((x, idx) => new { node = x.Item1, from = x.Item2, to = idx })
                         .Select(
                             nodeTuple =>
                             ConnectorModel.Make(
                                 nodeTuple.node,
                                 collapsedNode,
                                 nodeTuple.@from,
                                 nodeTuple.to))
                         .Where(connector => connector != null))
                {
                    undoRecorder.RecordCreationForUndo(connector);
                }

                foreach (var connector in
                         outConnectors.Select(
                             nodeTuple =>
                             ConnectorModel.Make(
                                 collapsedNode,
                                 nodeTuple.Item1,
                                 nodeTuple.Item2,
                                 nodeTuple.Item3)).Where(connector => connector != null))
                {
                    undoRecorder.RecordCreationForUndo(connector);
                }
            }
            return(newWorkspace);
        }
Beispiel #5
0
        /// <summary>
        ///     Collapse a set of nodes in a given workspace.  Has the side effects of prompting the user
        ///     first in order to obtain the name and category for the new node, 
        ///     writes the function to a dyf file, adds it to the FunctionDict, adds it to search, and compiles and 
        ///     places the newly created symbol (defining a lambda) in the Controller's FScheme Environment.  
        /// </summary>
        /// <param name="selectedNodes"> The function definition for the user-defined node </param>
        /// <param name="currentWorkspace"> The workspace where</param>
        /// <param name="args"></param>
        public static void Collapse(IEnumerable<NodeModel> selectedNodes, WorkspaceModel currentWorkspace, FunctionNamePromptEventArgs args=null)
        {
            var selectedNodeSet = new HashSet<NodeModel>(selectedNodes);

            if (args == null || !args.Success)
            {
                args = new FunctionNamePromptEventArgs();
                dynSettings.Controller.DynamoViewModel.OnRequestsFunctionNamePrompt(null, args);

                //if (!dynSettings.Controller.DynamoViewModel.ShowNewFunctionDialog(ref newNodeName, ref newNodeCategory))
                if (!args.Success)
                {
                    return;
                }
            }

            // Note that undoable actions are only recorded for the "currentWorkspace", 
            // the nodes which get moved into "newNodeWorkspace" are not recorded for undo,
            // even in the new workspace. Their creations will simply be treated as part of
            // the opening of that new workspace (i.e. when a user opens a file, she will 
            // not expect the nodes that show up to be undoable).
            // 
            // After local nodes are moved into "newNodeWorkspace" as the result of 
            // conversion, if user performs an undo, new set of nodes will be created in 
            // "currentWorkspace" (not moving those nodes in the "newNodeWorkspace" back 
            // into "currentWorkspace"). In another word, undo recording is on a per-
            // workspace basis, it does not work across different workspaces.
            // 
            UndoRedoRecorder undoRecorder = currentWorkspace.UndoRecorder;
            undoRecorder.BeginActionGroup();

            var newNodeWorkspace = new CustomNodeWorkspaceModel(args.Name, args.Category, args.Description, 0, 0)
            {
                WatchChanges = false,
                HasUnsavedChanges = true
            };

            var newNodeDefinition = new CustomNodeDefinition(Guid.NewGuid())
            {
                WorkspaceModel = newNodeWorkspace
            };

            currentWorkspace.DisableReporting();

            #region Determine Inputs and Outputs

            //Step 1: determine which nodes will be inputs to the new node
            var inputs = new HashSet<Tuple<NodeModel, int, Tuple<int, NodeModel>>>(
                selectedNodeSet.SelectMany(
                    node => Enumerable.Range(0, node.InPortData.Count).Where(node.HasConnectedInput)
                        .Select(data => Tuple.Create(node, data, node.Inputs[data]))
                        .Where(input => !selectedNodeSet.Contains(input.Item3.Item2))));

            var outputs = new HashSet<Tuple<NodeModel, int, Tuple<int, NodeModel>>>(
                selectedNodeSet.SelectMany(
                    node => Enumerable.Range(0, node.OutPortData.Count).Where(node.HasOutput).SelectMany(
                        data => node.Outputs[data]
                                    .Where(output => !selectedNodeSet.Contains(output.Item2))
                                    .Select(output => Tuple.Create(node, data, output)))));

            #endregion

            #region Detect 1-node holes (higher-order function extraction)

            var curriedNodeArgs =
                new HashSet<NodeModel>(
                    inputs
                        .Select(x => x.Item3.Item2)
                        .Intersect(outputs.Select(x => x.Item3.Item2)))
                    .Select(
                        outerNode =>
                        {
                            var node = new Apply1();

                            //MVVM : Don't make direct reference to view here
                            //MVVM: no reference to view here
                            //dynNodeView nodeUI = node.NodeUI;

                            var elNameAttrib =
                                node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), true)[0] as
                                NodeNameAttribute;
                            if (elNameAttrib != null)
                            {
                                node.NickName = elNameAttrib.Name;
                            }

                            node.GUID = Guid.NewGuid();

                            //store the element in the elements list
                            newNodeWorkspace.Nodes.Add(node);
                            node.WorkSpace = newNodeWorkspace;

                            node.DisableReporting();

                            //MVVM : Can't set view location here

                            //dynSettings.Bench.WorkBench.Children.Add(nodeUI);

                            //Place it in an appropriate spot
                            //Canvas.SetLeft(nodeUI, Canvas.GetLeft(outerNode.NodeUI));
                            //Canvas.SetTop(nodeUI, Canvas.GetTop(outerNode.NodeUI));
                            node.X = outerNode.X;
                            node.Y = outerNode.Y;

                            //Fetch all input ports
                            // in order
                            // that have inputs
                            // and whose input comes from an inner node
                            List<int> inPortsConnected = Enumerable.Range(0, outerNode.InPortData.Count)
                                                                   .Where(
                                                                       x =>
                                                                       outerNode.HasInput(x) &&
                                                                       selectedNodeSet.Contains(
                                                                           outerNode.Inputs[x].Item2))
                                                                   .ToList();

                            var nodeInputs = outputs
                                .Where(output => output.Item3.Item2 == outerNode)
                                .Select(
                                    output =>
                                    new
                                    {
                                        InnerNodeInputSender = output.Item1,
                                        OuterNodeInPortData = output.Item3.Item1
                                    }).ToList();

                            nodeInputs.ForEach(_ => node.AddInput());

                            node.RegisterAllPorts();

                            return new
                            {
                                OuterNode = outerNode,
                                InnerNode = node,
                                Outputs = inputs.Where(input => input.Item3.Item2 == outerNode)
                                                .Select(input => input.Item3.Item1),
                                Inputs = nodeInputs,
                                OuterNodePortDataList = inPortsConnected
                            };
                        }).ToList();

            #endregion

            #region UI Positioning Calculations

            double avgX = selectedNodeSet.Average(node => node.X);
            double avgY = selectedNodeSet.Average(node => node.Y);

            double leftMost = selectedNodeSet.Min(node => node.X);
            double topMost = selectedNodeSet.Min(node => node.Y);
            double rightMost = selectedNodeSet.Max(node => node.X + node.Width);

            #endregion

            #region Handle full selected connectors

            // Step 2: Determine all the connectors whose start/end owners are 
            // both in the selection set, and then move them from the current 
            // workspace into the new workspace.

            var fullySelectedConns = new HashSet<ConnectorModel>(
                currentWorkspace.Connectors.Where(conn =>
                {
                    bool startSelected = selectedNodeSet.Contains(conn.Start.Owner);
                    bool endSelected = selectedNodeSet.Contains(conn.End.Owner);
                    return startSelected && endSelected;
                }));

            foreach (var ele in fullySelectedConns)
            {
                undoRecorder.RecordDeletionForUndo(ele);
                currentWorkspace.Connectors.Remove(ele);
            }

            #endregion

            #region Handle partially selected connectors

            // Step 3: Partially selected connectors (either one of its start 
            // and end owners is in the selection) are to be destroyed.

            var partiallySelectedConns =
                currentWorkspace.Connectors.Where(
                    conn =>
                        selectedNodeSet.Contains(conn.Start.Owner) 
                        || selectedNodeSet.Contains(conn.End.Owner)).ToList();

            foreach (ConnectorModel connector in partiallySelectedConns)
            {
                undoRecorder.RecordDeletionForUndo(connector);
                connector.NotifyConnectedPortsOfDeletion();
                currentWorkspace.Connectors.Remove(connector);
            }

            #endregion

            #region Transfer nodes and connectors to new workspace

            // Step 4: move all nodes to new workspace remove from old

            foreach (var ele in selectedNodeSet)
            {
                undoRecorder.RecordDeletionForUndo(ele);
                ele.SaveResult = false;
                currentWorkspace.Nodes.Remove(ele);
                ele.WorkSpace = newNodeWorkspace;
            }

            //  add to new
            newNodeWorkspace.Nodes.AddRange(selectedNodeSet);
            newNodeWorkspace.Connectors.AddRange(fullySelectedConns);

            double leftShift = leftMost - 250;
            foreach (NodeModel node in newNodeWorkspace.Nodes)
            {
                node.X = node.X - leftShift;
                node.Y = node.Y - topMost;
            }

            #endregion

            foreach (var node in newNodeWorkspace.Nodes)
                node.DisableReporting();

            #region Process inputs

            var inConnectors = new List<Tuple<NodeModel, int>>();

            var uniqueInputSenders = new Dictionary<Tuple<NodeModel, int>, Symbol>();
            
            //Step 3: insert variables (reference step 1)
            foreach (var input in Enumerable.Range(0, inputs.Count).Zip(inputs, Tuple.Create))
            {
                int inputIndex = input.Item1;

                NodeModel inputReceiverNode = input.Item2.Item1;
                int inputReceiverData = input.Item2.Item2;

                NodeModel inputNode = input.Item2.Item3.Item2;
                int inputData = input.Item2.Item3.Item1;

                Symbol node;

                var key = Tuple.Create(inputNode, inputData);
                if (uniqueInputSenders.ContainsKey(key))
                {
                    node = uniqueInputSenders[key];
                }
                else
                {
                    //MVVM : replace NodeUI reference with node
                    inConnectors.Add(Tuple.Create(inputNode, inputData));

                    //Create Symbol Node
                    node = new Symbol
                    {
                        InputSymbol = inputReceiverNode.InPortData[inputReceiverData].NickName
                    };

                    //MVVM : Don't make direct reference to view here
                    //dynNodeView nodeUI = node.NodeUI;

                    var elNameAttrib =
                        node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), true)[0] as NodeNameAttribute;
                    if (elNameAttrib != null)
                    {
                        node.NickName = elNameAttrib.Name;
                    }

                    node.GUID = Guid.NewGuid();

                    //store the element in the elements list
                    newNodeWorkspace.Nodes.Add(node);
                    node.WorkSpace = newNodeWorkspace;

                    node.DisableReporting();

                    node.X = 0;
                    node.Y = inputIndex * (50 + node.Height);

                    uniqueInputSenders[key] = node;
                }

                var curriedNode = curriedNodeArgs.FirstOrDefault(x => x.OuterNode == inputNode);

                if (curriedNode == null)
                {
                    var conn1 = ConnectorModel.Make(node,
                                                  inputReceiverNode,
                                                  0,
                                                  inputReceiverData,
                                                  PortType.INPUT);

                    if (conn1 != null)
                        newNodeWorkspace.Connectors.Add(conn1);
                }
                else
                {
                    //Connect it to the applier
                    var conn = ConnectorModel.Make(node,
                                                     curriedNode.InnerNode,
                                                     0,
                                                     0,
                                                     PortType.INPUT);
                    if (conn != null)
                        newNodeWorkspace.Connectors.Add(conn);

                    //Connect applier to the inner input receive
                    var conn2 = ConnectorModel.Make(
                        curriedNode.InnerNode,
                        inputReceiverNode,
                        0,
                        inputReceiverData,
                        PortType.INPUT);

                    if (conn2 != null)
                        newNodeWorkspace.Connectors.Add(conn2);
                }
            }

            #endregion

            #region Process outputs

            //List of all inner nodes to connect an output. Unique.
            var outportList = new List<Tuple<NodeModel, int>>();

            var outConnectors = new List<Tuple<NodeModel, int, int>>();

            int i = 0;
            if (outputs.Any())
            {
                foreach (var output in outputs)
                {
                    if (outportList.All(x => !(x.Item1 == output.Item1 && x.Item2 == output.Item2)))
                    {
                        NodeModel outputSenderNode = output.Item1;
                        int outputSenderData = output.Item2;
                        NodeModel outputReceiverNode = output.Item3.Item2;

                        if (curriedNodeArgs.Any(x => x.OuterNode == outputReceiverNode))
                            continue;

                        outportList.Add(Tuple.Create(outputSenderNode, outputSenderData));

                        //Create Symbol Node
                        var node = new Output
                        {
                            Symbol = outputSenderNode.OutPortData[outputSenderData].NickName
                        };

                        //dynNodeView nodeUI = node.NodeUI;

                        var elNameAttrib =
                            node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), false)[0] as
                                NodeNameAttribute;
                        if (elNameAttrib != null)
                        {
                            node.NickName = elNameAttrib.Name;
                        }

                        node.GUID = Guid.NewGuid();

                        //store the element in the elements list
                        newNodeWorkspace.Nodes.Add(node);
                        node.WorkSpace = newNodeWorkspace;

                        node.DisableReporting();

                        node.X = rightMost + 75 - leftShift;
                        node.Y = i*(50 + node.Height);

                        var conn = ConnectorModel.Make(
                            outputSenderNode,
                            node,
                            outputSenderData,
                            0,
                            PortType.INPUT);

                        if (conn != null)
                            newNodeWorkspace.Connectors.Add(conn);

                        i++;
                    }
                }

                //Connect outputs to new node
                foreach (var output in outputs)
                {
                    //Node to be connected to in CurrentWorkspace
                    NodeModel outputSenderNode = output.Item1;

                    //Port to be connected to on outPutNode_outer
                    int outputSenderData = output.Item2;

                    int outputReceiverData = output.Item3.Item1;
                    NodeModel outputReceiverNode = output.Item3.Item2;

                    var curriedNode = curriedNodeArgs.FirstOrDefault(x => x.OuterNode == outputReceiverNode);

                    if (curriedNode == null)
                    {
                        // we create the connectors in the current space later
                        //MVVM : replaced multiple dynNodeView refrences with dynNode
                        outConnectors.Add(
                            Tuple.Create(
                                outputReceiverNode,
                                outportList.FindIndex(
                                    x => x.Item1 == outputSenderNode && x.Item2 == outputSenderData),
                                outputReceiverData));
                    }
                    else
                    {
                        int targetPort =
                            curriedNode.Inputs.First(x => x.InnerNodeInputSender == outputSenderNode)
                                .OuterNodeInPortData;

                        int targetPortIndex = curriedNode.OuterNodePortDataList.IndexOf(targetPort);

                        //Connect it (new dynConnector)

                        var conn = ConnectorModel.Make(
                            outputSenderNode,
                            curriedNode.InnerNode,
                            outputSenderData,
                            targetPortIndex + 1,
                            PortType.INPUT);

                        if (conn != null)
                            newNodeWorkspace.Connectors.Add(conn);
                    }
                }
            }
            else
            {
                foreach (var hanging in
                    selectedNodeSet.SelectMany(
                        node =>
                            Enumerable.Range(0, node.OutPortData.Count)
                                .Where(port => !node.HasOutput(port))
                                .Select(port => new { node, port })).Distinct())
                {
                    //Create Symbol Node
                    var node = new Output
                    {
                        Symbol = hanging.node.OutPortData[hanging.port].NickName
                    };

                    //dynNodeView nodeUI = node.NodeUI;

                    var elNameAttrib =
                        node.GetType().GetCustomAttributes(typeof(NodeNameAttribute), false)[0] as
                            NodeNameAttribute;
                    if (elNameAttrib != null)
                    {
                        node.NickName = elNameAttrib.Name;
                    }

                    node.GUID = Guid.NewGuid();

                    //store the element in the elements list
                    newNodeWorkspace.Nodes.Add(node);
                    node.WorkSpace = newNodeWorkspace;

                    node.DisableReporting();

                    node.X = rightMost + 75 - leftShift;
                    node.Y = i * (50 + node.Height);

                    var conn = ConnectorModel.Make(
                        hanging.node,
                        node,
                        hanging.port,
                        0,
                        PortType.INPUT);

                    if (conn != null)
                        newNodeWorkspace.Connectors.Add(conn);

                    i++;
                }
            }

            #endregion

            // save and load the definition from file
            newNodeDefinition.SyncWithWorkspace(true, true);
            dynSettings.Controller.DynamoModel.Workspaces.Add(newNodeWorkspace);

            string name = newNodeDefinition.FunctionId.ToString();
            var collapsedNode = dynSettings.Controller.DynamoModel.CreateNode(avgX, avgY, name);
            undoRecorder.RecordCreationForUndo(collapsedNode);

            // place the node as intended, not centered
            collapsedNode.X = avgX;
            collapsedNode.Y = avgY;

            collapsedNode.DisableReporting();

            foreach (var nodeTuple in inConnectors.Select((x, idx) => new { node=x.Item1, from=x.Item2, to=idx }))
            {
                var conn = ConnectorModel.Make(
                                    nodeTuple.node,
                                    collapsedNode,
                                    nodeTuple.from,
                                    nodeTuple.to,
                                    PortType.INPUT);

                if (conn != null)
                {
                    currentWorkspace.Connectors.Add(conn);
                    undoRecorder.RecordCreationForUndo(conn);
                }
            }

            foreach (var nodeTuple in outConnectors)
            {

                var conn = ConnectorModel.Make(
                                    collapsedNode,
                                    nodeTuple.Item1,
                                    nodeTuple.Item2,
                                    nodeTuple.Item3,
                                    PortType.INPUT);

                if (conn != null)
                {
                    currentWorkspace.Connectors.Add(conn);
                    undoRecorder.RecordCreationForUndo(conn);
                }
            }

            undoRecorder.EndActionGroup();
            collapsedNode.EnableReporting();
            currentWorkspace.EnableReporting();

            foreach (var node in newNodeWorkspace.Nodes)
                node.EnableReporting();

            newNodeWorkspace.WatchChanges = true;
        }