private void CreateAndConnectNodeImpl(CreateAndConnectNodeCommand command)
{
using (CurrentWorkspace.UndoRecorder.BeginActionGroup())
{
CreateAndConnectNodeImplWithUndoGroup(command);
}
}
/// <summary>
/// This method assumes that there exists an undo-redo action group already
/// that can be used to record creation and deletion of models.
/// </summary>
/// <param name="command"></param>
private void CreateAndConnectNodeImplWithUndoGroup(CreateAndConnectNodeCommand command)
{
var newNode = CreateNodeFromNameOrType(command.ModelGuid, command.NewNodeName);
if (newNode == null)
{
return;
}
newNode.X = command.X;
newNode.Y = command.Y;
var existingNode = CurrentWorkspace.GetModelInternal(command.ModelGuids.ElementAt(1)) as NodeModel;
if (existingNode == null)
{
return;
}
AddNodeToCurrentWorkspace(newNode, false, command.AddNewNodeToSelection);
CurrentWorkspace.UndoRecorder.RecordCreationForUndo(newNode);
PortModel inPortModel, outPortModel;
if (command.CreateAsDownstreamNode)
{
// Connect output port of Existing Node to input port of New node
outPortModel = existingNode.OutPorts[command.OutputPortIndex];
inPortModel = newNode.InPorts[command.InputPortIndex];
}
else
{
// Connect output port of New Node to input port of existing node
outPortModel = newNode.OutPorts[command.OutputPortIndex];
inPortModel = existingNode.InPorts[command.InputPortIndex];
}
var models = GetConnectorsToAddAndDelete(inPortModel, outPortModel);
foreach (var modelPair in models)
{
switch (modelPair.Value)
{
case UndoRedoRecorder.UserAction.Creation:
CurrentWorkspace.UndoRecorder.RecordCreationForUndo(modelPair.Key);
break;
case UndoRedoRecorder.UserAction.Deletion:
CurrentWorkspace.UndoRecorder.RecordDeletionForUndo(modelPair.Key);
break;
}
}
}
void CreateAndConnectNodeImpl(CreateAndConnectNodeCommand command)
{
using (CurrentWorkspace.UndoRecorder.BeginActionGroup())
{
var newNode = CreateNodeFromNameOrType(command.ModelGuid, command.NewNodeName);
newNode.X = command.X;
newNode.Y = command.Y;
var existingNode = CurrentWorkspace.GetModelInternal(command.ModelGuids.ElementAt(1)) as NodeModel;
if(newNode == null || existingNode == null) return;
AddNodeToCurrentWorkspace(newNode, false, command.AddNewNodeToSelection);
CurrentWorkspace.UndoRecorder.RecordCreationForUndo(newNode);
PortModel inPortModel, outPortModel;
if (command.CreateAsDownstreamNode)
{
// Connect output port of Existing Node to input port of New node
outPortModel = existingNode.OutPorts[command.OutputPortIndex];
inPortModel = newNode.InPorts[command.InputPortIndex];
}
else
{
// Connect output port of New Node to input port of existing node
outPortModel = newNode.OutPorts[command.OutputPortIndex];
inPortModel = existingNode.InPorts[command.InputPortIndex];
}
var models = GetConnectorsToAddAndDelete(inPortModel, outPortModel);
foreach (var modelPair in models)
{
switch (modelPair.Value)
{
case UndoRedoRecorder.UserAction.Creation:
CurrentWorkspace.UndoRecorder.RecordCreationForUndo(modelPair.Key);
break;
case UndoRedoRecorder.UserAction.Deletion:
CurrentWorkspace.UndoRecorder.RecordDeletionForUndo(modelPair.Key);
break;
}
}
}
}
