/* ===============================================================================================
* Helper method to iterate over all child nodes of Plc\PlcObjects in Orders.xml
* =============================================================================================== */
private void addPlcElements(ref List <PlcObjectInfo> list, XmlNodeList xmlElements)
{
if (xmlElements != null)
{
foreach (XmlElement element in xmlElements)
{
PlcObjectType type = (PlcObjectType)Enum.Parse(typeof(PlcObjectType), element.Attributes["type"].Value);
PlcObjectInfo info = null;
switch (type)
{
case PlcObjectType.Library:
info = new LibraryInfo(element);
break;
case PlcObjectType.Placeholder:
info = new PlaceholderInfo(element);
break;
case PlcObjectType.DataType:
info = new DataTypeInfo(element);
break;
case PlcObjectType.POU:
info = new POUInfo(element);
break;
case PlcObjectType.Itf:
info = new ItfInfo(element);
break;
case PlcObjectType.Gvl:
info = new GvlInfo(element);
break;
default:
Debug.Fail("");
break;
}
if (info != null)
{
list.Add(info);
}
}
}
}
private ITcSmTreeItem createPou(POUInfo pouInfo, ITcSmTreeItem parent, IWorker worker, XmlDocument doc)
{
XmlNode pouNode = doc.SelectSingleNode("TcPlcObject/POU");
string pouName = pouNode.Attributes["Name"].Value;
worker.ProgressStatus = string.Format("Creating POU '{0}' ...", pouName);
ITcSmTreeItem item = null;
if (!TryLookupChild(parent, pouName, out item))
{
item = parent.CreateChild(pouName, TreeItemType.PlcPouFunctionBlock.AsInt32(), "", null);
}
// some items need to be casted to a more special interface to gain access to all of their methods and properties, for example POUs which need
// to be casted to the interface ITcPlcPou to get access to their unique methods and properties.
ITcPlcPou pou = (ITcPlcPou)item;
pou.DocumentXml = doc.OuterXml; // get/set PLC code of a POU in XML Format
return(item);
}