public static wfHistory[] GetWorkflowHistory(HttpSessionStateBase Session)
{
object viewState = Session["workflowhistory"];
if (viewState == null)
{
wfHistory[] arrayList = new wfHistory[1];
return(arrayList);
}
else
{
return((wfHistory[])viewState);
}
}
private void AddtoWFHistory(Int32 WFID, Int32 NodeID, string wfname, string sectionname)
{
if (AddHistory == false)
{
return;
}
if (WFHistArray == null)
{
WFHistArray = new ArrayList();
}
if (SessionManager.GetWorkflowHistory(HttpContext.Session) != null)
{
WFHistArray.Clear();
foreach (wfHistory wf in SessionManager.GetWorkflowHistory(HttpContext.Session))
{
if (wf.WorkFlowID > 0)
{
WFHistArray.Add(wf);
}
}
}
wfHistory wfh = new wfHistory();
wfh.WorkFlowID = WFID;
wfh.NodeID = NodeID;
wfh.WorkFlowName = wfname;
wfh.SectionName = sectionname;
if (WFHistArray.Count > 0)
{
wfHistory whist = (wfHistory)WFHistArray[WFHistArray.Count - 1];
if (wfh.NodeID == whist.NodeID && wfh.WorkFlowID == whist.WorkFlowID)
{
return;
}
}
WFHistArray.Add(wfh);
SessionManager.StoreWorkflowHistory(HttpContext.Session, (wfHistory[])WFHistArray.ToArray(typeof(wfHistory)));
}
private WFNodeInfo DetermineNextNode(ScriptWorkflow scriptWorkflow, int currentNode, MoveDirection direction)
{
// Local Variables
XmlSerializer xmlSerializer = null;
StringReader stringReader = null;
WorkflowNodes workflowNodes = null;
WFNodeInfo nextNode = null;
//wfHistory[] WorkflowHistory = null;
ArrayList WFHistArray = null;
try
{
// Instantiate local variables
stringReader = new StringReader(scriptWorkflow.WorkflowXML);
WFHistArray = new ArrayList();
// Deserialize the WorkFlow Nodes
xmlSerializer = new XmlSerializer(typeof(WorkflowNodes));
workflowNodes = (WorkflowNodes)xmlSerializer.Deserialize(stringReader);
// Determin by direction
switch (direction)
{
case MoveDirection.Forward:
foreach (WFNodeInfo WFN in workflowNodes.Nodes)
{
if (WFN.NodeUniqueID == currentNode) //WorkflowObject.CurrentNode
{
Int32 ProcNode = DetermineNextSection(WFN);
foreach (WFNodeInfo WFN2 in workflowNodes.Nodes)
{
if (WFN2.NodeUniqueID == ProcNode)
{
nextNode = WFN2;
break;
}
}
break;
}
}
break;
case MoveDirection.Back:
if (SessionManager.GetWorkflowHistory(HttpContext.Session) != null)
{
foreach (wfHistory wfhis in SessionManager.GetWorkflowHistory(HttpContext.Session))
{
WFHistArray.Add(wfhis);
}
if (WFHistArray.Count < 2)
{
return(null);
}
wfHistory lastone = (wfHistory)WFHistArray[WFHistArray.Count - 2];
if (lastone.WorkFlowID == scriptWorkflow.ScriptWorkflowID && lastone.NodeID == currentNode)
{
return(null);
}
if (lastone.WorkFlowID == scriptWorkflow.ScriptWorkflowID)
{
currentNode = lastone.NodeID;
WFHistArray.RemoveAt(WFHistArray.Count - 1);
WFHistArray.RemoveAt(WFHistArray.Count - 1);
SessionManager.StoreWorkflowHistory(HttpContext.Session, (wfHistory[])WFHistArray.ToArray(typeof(wfHistory)));
nextNode = DetermineNextNode(scriptWorkflow, currentNode, MoveDirection.Current);
}
else
{
nextNode = new WFNodeInfo();
nextNode.NodeUniqueID = lastone.WorkFlowID;
nextNode.nodeName = lastone.WorkFlowName;
nextNode.nodeType = NodeType.PreviousWorkflow;
nextNode.DocUID = lastone.NodeID; // Use DocUID parameter as NodeId
WFHistArray.RemoveAt(WFHistArray.Count - 1);
WFHistArray.RemoveAt(WFHistArray.Count - 1);
SessionManager.StoreWorkflowHistory(HttpContext.Session, (wfHistory[])WFHistArray.ToArray(typeof(wfHistory)));
return(nextNode);
}
}
else
{
return(null);
}
break;
case MoveDirection.Current:
foreach (WFNodeInfo WFN in workflowNodes.Nodes)
{
if (WFN.NodeUniqueID == currentNode)
{
nextNode = WFN;
break;
}
}
break;
case MoveDirection.Start:
foreach (WFNodeInfo wFNodeInfo in workflowNodes.Nodes)
{
Int32 ProcNode = DetermineNextSection(wFNodeInfo);
foreach (WFNodeInfo wFNodeInfo2 in workflowNodes.Nodes)
{
if (wFNodeInfo2.NodeUniqueID == ProcNode)
{
nextNode = wFNodeInfo2;
break;
}
}
break;
}
break;
default:
break;
}
if (nextNode == null) //&& nextNode.nodeType.Equals(NodeType.SignPost)
{
nextNode = DetermineNextNode(scriptWorkflow, nextNode.NodeUniqueID, MoveDirection.Forward);
}
return(nextNode);
}
catch
{
return(null);
}
finally
{
xmlSerializer = null;
stringReader = null;
workflowNodes = null;
WFHistArray = null;
}
}