private void TransferInformationFromMethodToProperty(VisualNode sourceNode, VisualNode destinationNode)
{
if (sourceNode == null)
throw new ArgumentNullException("sourceNode");
if (sourceNode == null)
throw new ArgumentNullException("destinationNode");
destinationNode.Text = sourceNode.Text;
Slot destinationInputSlot = this.GetSlot(destinationNode.GetInputSlot(0)) as Slot;
Slot sourceInputSlot = this.GetSlot(sourceNode.GetInputSlot(0)) as Slot;
if (sourceInputSlot.ConnectingSlots != null)
{
Slot outputSlot = this.GetSlot(sourceInputSlot.ConnectingSlots[0]) as Slot;
this.edgeController.CreateLinkingEdge(outputSlot, destinationInputSlot);
}
Slot destinationOutputSlot = this.GetSlot(destinationNode.GetOutputSlot(0)) as Slot;
Slot sourceOutputSlot = this.GetSlot(sourceNode.GetOutputSlot(0)) as Slot;
if (sourceOutputSlot.ConnectingSlots != null)
{
foreach (uint slotId in sourceOutputSlot.ConnectingSlots)
{
Slot inputSlot = this.GetSlot(slotId) as Slot;
this.edgeController.CreateLinkingEdge(destinationOutputSlot, inputSlot);
}
}
List<string> defined = sourceNode.GetDefinedVariables(false);
graphProperties.RuntimeStates.TransferVariableDefinitionMapping(
defined, sourceNode.NodeId, destinationNode.NodeId);
}
private bool HandleSelectedMenuItem(GraphCommand command)
{
int menuItemId = (int)command.GetArgument(0);
double mouseX = ((double)command.GetArgument(1));
double mouseY = ((double)command.GetArgument(2));
uint nodeId = (uint)command.GetArgument(3);
NodePart part = ((NodePart)command.GetArgument(4));
LibraryItem selectedItem = new LibraryItem();
VisualNode node = this.GetVisualNode(nodeId);
if (itemsProvider != null)
{
selectedItem = this.itemsProvider.GetItem(menuItemId);
}
if (selectedItem == null) //No match in the library
{
if (part == NodePart.NorthWest)
{
this.HandleTopLeftSelectedItem(menuItemId, nodeId);
}
else if (menuItemId == Configurations.ConvertNodeToCode)
{
HandleConvertSelectionToCode();
return(true);
}
else if (menuItemId < Configurations.PropertyBase)
{
// @TODO(Joy): Use switch-case for "menuItemId".
ProcessPreviewMenuItems(menuItemId, nodeId);
UpdateDirtyNodes();
return(true);
}
}
else //Item found in library
{
if (selectedItem.Children != null && selectedItem.Children.Count > 0)
{
selectedItem = selectedItem.Children[0];
}
LibraryItem.MemberType itemType = this.GetItemType(menuItemId);
DeltaNodes deltaNodes = new DeltaNodes();
VisualNode newNode = null;
if (part == NodePart.NorthEast)
{
if (selectedItem.Type == LibraryItem.MemberType.InstanceProperty)
{
if (selectedItem.ItemType == NodeType.Function)
{
newNode = this.CreateMethodNode(mouseX, mouseY, selectedItem.Assembly, selectedItem.QualifiedName, selectedItem.ArgumentTypes);
}
else
{
newNode = this.CreatePropertyNode(mouseX, mouseY, selectedItem.Assembly, selectedItem.QualifiedName, selectedItem.ArgumentTypes);
}
deltaNodes.AppendToAddedNodes(newNode);
}
else if (selectedItem.Type == LibraryItem.MemberType.InstanceMethod)
{
newNode = this.CreateMethodNode(mouseX, mouseY, selectedItem.Assembly, selectedItem.QualifiedName, selectedItem.ArgumentTypes);
deltaNodes.AppendToAddedNodes(newNode);
}
if (newNode != null && (null != deltaNodes.AddedNodes) && deltaNodes.AddedNodes.Count > 0)
{
// @keyu: If we are acessing its member function or
// property, there is no reason to mark this node as
// dirty. Comment it out to avoid to recreate object.
//
// deltaNodes.AppendToModifiedNodes(node);
Slot inputSlot = this.GetSlot(newNode.GetInputSlot(0)) as Slot;
Slot outputSlot = this.GetSlot(node.GetOutputSlot(0)) as Slot;
this.undoRedoRecorder.BeginGroup();
this.undoRedoRecorder.RecordRuntimeStatesForUndo(this.graphProperties.RuntimeStates);
this.undoRedoRecorder.RecordNodeModificationForUndo(deltaNodes.ModifiedNodes);
this.graphProperties.RuntimeStates.AddVariablesDefinedInNode(newNode, false);
this.edgeController.CreateLinkingEdge(outputSlot, inputSlot);
this.undoRedoRecorder.RecordNodeCreationForUndo(deltaNodes.AddedNodes);
this.undoRedoRecorder.EndGroup();
//After EstablishLinkingConnection() is executed, the nodes in the nodeToModify would already be modified
this.SynchronizeToLiveRunner(deltaNodes);
}
}
else if (part == NodePart.North)
{
if (itemType == LibraryItem.MemberType.Constructor)
{
deltaNodes.AppendToModifiedNodes(node);
deltaNodes.AppendToModifiedNodes(FindAssociatedNodesFromNodes(deltaNodes.ModifiedNodes));
this.undoRedoRecorder.BeginGroup();
this.undoRedoRecorder.RecordNodeModificationForUndo(deltaNodes.ModifiedNodes);
//this.undoRedoRecorder.RecordEdgeModificationForUndo(edgeController.FindEdgeConnectTo(node));
((FunctionNode)node).ChangeConstructor(selectedItem.QualifiedName, selectedItem.ArgumentTypes, selectedItem.ArgumentNames);
this.undoRedoRecorder.EndGroup();
//After ChangeConstructor() is executed, the nodes in the nodeToModify would already be modified
this.SynchronizeToLiveRunner(deltaNodes);
}
else if (itemType == LibraryItem.MemberType.InstanceProperty)
{
deltaNodes.AppendToRemovedNodes(node);
deltaNodes.AppendToModifiedNodes(this.FindAssociatedNodesFromNodes(deltaNodes.RemovedNodes));
newNode = this.CreatePropertyNode(mouseX, mouseY, selectedItem.Assembly, selectedItem.QualifiedName, selectedItem.ArgumentTypes);
deltaNodes.AppendToAddedNodes(newNode);
this.undoRedoRecorder.BeginGroup();
this.undoRedoRecorder.RecordRuntimeStatesForUndo(this.graphProperties.RuntimeStates);
this.undoRedoRecorder.RecordNodeDeletionForUndo(deltaNodes.RemovedNodes);
this.undoRedoRecorder.RecordNodeModificationForUndo(deltaNodes.ModifiedNodes);
this.TransferInformationFromMethodToProperty(node, newNode);
this.undoRedoRecorder.RecordNodeCreationForUndo(deltaNodes.AddedNodes);
this.DeleteNodes(deltaNodes.RemovedNodes);
this.undoRedoRecorder.EndGroup();
//After DeleteNodes() is executed, the nodes in the nodeToModify would already be modified
this.SynchronizeToLiveRunner(deltaNodes);
}
else if (itemType == LibraryItem.MemberType.InstanceMethod)
{
deltaNodes.AppendToModifiedNodes(node);
deltaNodes.AppendToModifiedNodes(FindAssociatedNodesFromNodes(deltaNodes.ModifiedNodes));
this.undoRedoRecorder.BeginGroup();
this.undoRedoRecorder.RecordNodeModificationForUndo(deltaNodes.ModifiedNodes);
((FunctionNode)node).ChangeMethod(selectedItem.QualifiedName, selectedItem.ArgumentTypes);
this.undoRedoRecorder.EndGroup();
//After ChangeConstructor() is executed, the nodes in the nodeToModify would already be modified
this.SynchronizeToLiveRunner(deltaNodes);
}
}
}
this.UpdateDirtyNodes();
edgeController.UpdateEdgeConnectTo(node);
return(true);
}
internal EdgeConnectionFlag AttemptConnectEdge(VisualNode node, NodePart nodePart, int index, out List<IVisualNode> nodeToModify)
{
nodeToModify = new List<IVisualNode>();
connectNodeId = uint.MaxValue;
connectSlotId = uint.MaxValue;
connectSlotType = SlotType.None;
SlotType startSlotType = SlotType.None;
if (node != null)
{
connectNodeId = node.NodeId;
if (graphController.CurrentDragState == DragState.CurveDrawing)
{
if (currentlySelectedNodeId == connectNodeId)
return EdgeConnectionFlag.None;
startSlotType = currentlySelectedSlotType;
}
else
{
foreach (uint slotId in reconnectingSlots) //try to connect any of the reconnecting node
{
if (connectNodeId == graphController.GetSlot(slotId).Owners.Last())
return EdgeConnectionFlag.None;
}
if (graphController.GetSlot(lastConnectedSlotId).SlotType == SlotType.Output)
startSlotType = SlotType.Input;
else
startSlotType = SlotType.Output;
}
if (nodePart == NodePart.InputSlot || nodePart == NodePart.InputLabel || nodePart == NodePart.ReplicationGuide)
{
connectSlotType = SlotType.Input;
connectSlotId = node.GetInputSlot(index);
}
else if (nodePart == NodePart.OutputSlot || (nodePart == NodePart.Text && node.VisualType != NodeType.CodeBlock)) // user can only connect to the output slot of the CBN
{
connectSlotType = SlotType.Output;
connectSlotId = node.GetOutputSlot(index);
}
else if (node.VisualType == NodeType.Identifier && nodePart == NodePart.Caption)
{
if (startSlotType == SlotType.Output)
{
connectSlotType = SlotType.Input;
connectSlotId = node.GetInputSlot(0);
}
else if (startSlotType == SlotType.Input)
{
connectSlotType = SlotType.Output;
connectSlotId = node.GetOutputSlot(0);
}
}
}
if (graphController.CurrentDragState == DragState.CurveDrawing)
{
if (connectSlotId == 0 || connectSlotId == uint.MaxValue)
return EdgeConnectionFlag.None;
if (currentlySelectedSlotType == connectSlotType)
return EdgeConnectionFlag.Illegal;
// Check if these is a edge between the two slots already
if (startSlotType == SlotType.Input)
{
this.inputSlotId = currentlySelectedSlotId;
this.outputSlotId = connectSlotId;
}
else
{
this.inputSlotId = connectSlotId;
this.outputSlotId = currentlySelectedSlotId;
}
var entry = edgeCollection.FirstOrDefault(x => IsAdded(x.Value));
if ((edgeCollection.Count() != 0) && (entry.Value != null))
return EdgeConnectionFlag.None;
nodeToModify.Add(graphController.GetVisualNode(currentlySelectedNodeId));
nodeToModify.Add(node);
//check if it is a edge replace(the input slot is connect to other node already)
if (FindEdgeToBeReplaced(out edgeToBeReplaced))
{
nodeToModify.Add(graphController.GetVisualNode
(graphController.GetSlot(edgeToBeReplaced.StartSlotId).Owners.Last()));
nodeToModify.Add(graphController.GetVisualNode
(graphController.GetSlot(edgeToBeReplaced.EndSlotId).Owners.Last()));
}
return EdgeConnectionFlag.NewEdge;
}
else
{
nodeToModify.Add(graphController.GetVisualNode
(graphController.GetSlot(lastConnectedSlotId).Owners.Last()));
foreach (uint slotId in reconnectingSlots)
{
nodeToModify.Add(graphController.GetVisualNode
(graphController.GetSlot(slotId).Owners.Last()));
}
if (connectSlotId == 0 || connectSlotId == uint.MaxValue)
return EdgeConnectionFlag.None;
if (connectSlotType != graphController.GetSlot(lastConnectedSlotId).SlotType)
return EdgeConnectionFlag.Illegal;
if (lastConnectedSlotId == connectSlotId) // node modification is needed only when the it reconnect to different slot
{
nodeToModify = new List<IVisualNode>();
}
else
{
nodeToModify.Add(node);
//check if it is a edge replace(the input slot is connect to other node already)
if (FindEdgeToBeReplaced(reconnectingSlots[0], out edgeToBeReplaced))
{
if (!reconnectingEdges.Contains(edgeToBeReplaced.EdgeId))
{
nodeToModify.Add(graphController.GetVisualNode
(graphController.GetSlot(edgeToBeReplaced.StartSlotId).Owners.Last()));
nodeToModify.Add(graphController.GetVisualNode
(graphController.GetSlot(edgeToBeReplaced.EndSlotId).Owners.Last()));
}
}
}
return EdgeConnectionFlag.ReconnectEdge;
}
}
