private FlowDiagramNode AddFlowDiagramLabelNode(int stepIndex, IFlowDefinition flowDefinition, FlowDiagram flowDiagram,
FlowStep flowStep, ref int endCount)
{
var labelNode = flowDiagram.AddNode(new FlowDiagramNode
{
NodeType = FlowDiagramNodeType.Label,
Name = flowStep.Name,
Text = flowStep.Text ?? flowStep.Name
});
endCount = AddFlowDiagramDefaultLink(labelNode, stepIndex, flowDefinition, flowDiagram, endCount);
return(labelNode);
}
private FlowDiagramNode AddFlowDiagramNode(int stepIndex, IFlowDefinition flowDefinition,
FlowDiagramNode previousNode, FlowDiagram flowDiagram, ref int endCount)
{
var flowStep = flowDefinition.Steps[stepIndex];
switch (flowStep)
{
case ActivityFlowStep _:
var activityNode = AddFlowDiagramActivityNode(stepIndex, flowDefinition, flowDiagram, flowStep, ref endCount);
previousNode = activityNode;
break;
case LabelFlowStep _:
var labelNode = AddFlowDiagramLabelNode(stepIndex, flowDefinition, flowDiagram, flowStep, ref endCount);
previousNode = labelNode;
break;
case EndFlowStep _:
var endFlowNode = AddFlowDiagramEndNode(flowDiagram, ref endCount);
previousNode.Links.Add(new FlowDiagramLink {
TargetNodeName = endFlowNode.Name
});
break;
case GotoFlowStep gotoFlowStep:
previousNode.Links.Add(new FlowDiagramLink {
TargetNodeName = gotoFlowStep.NextStepName
});
break;
case DecisionFlowStepBase decisionFlowStep:
var decisionNode = AddFlowDiagramDecisionNode(stepIndex, flowDefinition, flowDiagram, flowStep, decisionFlowStep, ref endCount);
previousNode = decisionNode;
break;
default:
throw new FlowException($"Unhandled flow step type: {flowStep.GetType().FullName}");
}
return(previousNode);
}
private FlowDiagramNode AddFlowDiagramActivityNode(int stepIndex, IFlowDefinition flowDefinition, FlowDiagram flowDiagram,
FlowStep flowStep, ref int endCount)
{
var activityRequest = GetFlowStepRequest(flowStep.Definition);
var activityNode = flowDiagram.AddNode(new FlowDiagramNode
{
NodeType = FlowDiagramNodeType.Activity,
Name = flowStep.Name,
Text = GetFlowDiagramNodeText(flowStep, activityRequest),
OverrideKey = flowStep.OverrideKey?.Value,
OverrideDescription = flowStep.OverrideKey?.Description,
});
SetFlowDiagramNodeInputSummaries(flowStep, activityRequest, activityNode);
activityNode.OutputBindings = GetBoundOutputSummary(flowStep, activityRequest);
endCount = AddFlowDiagramDefaultLink(activityNode, stepIndex, flowDefinition, flowDiagram, endCount);
return(activityNode);
}
