private string GetDescription()
{
if (this.NodeNature == Nature.Deprecated)
{
if (string.IsNullOrEmpty(this.LegacyAssembly))
{
var format = "Node of type '{0}' is now deprecated";
return(string.Format(format, this.LegacyNodeName));
}
else
{
var format = "Node of type '{0}' ({1}) is now deprecated";
return(string.Format(format, this.LegacyNodeName, this.LegacyAssembly));
}
}
else if (this.NodeNature == Nature.Unresolved)
{
if (string.IsNullOrEmpty(this.LegacyAssembly))
{
var format = "Node of type '{0}' cannot be resolved";
return(string.Format(format, this.LegacyNodeName));
}
else
{
var format = "Node of type '{0}' ({1}) cannot be resolved";
return(string.Format(format, this.LegacyNodeName, this.LegacyAssembly));
}
}
var message = "Unhandled 'DummyNode.NodeNature' value: {0}";
throw new InvalidOperationException(string.Format(message, NodeNature.ToString()));
}
private void SaveNode(XmlDocument xmlDoc, XmlElement nodeElement, SaveContext context)
{
if (context == SaveContext.Copy || context == SaveContext.Undo)
{
//Dump all the information into memory
nodeElement.SetAttribute("inputCount", InputCount.ToString());
nodeElement.SetAttribute("outputCount", OutputCount.ToString());
nodeElement.SetAttribute("legacyNodeName", LegacyNodeName);
nodeElement.SetAttribute("legacyAssembly", LegacyAssembly);
nodeElement.SetAttribute("nodeNature", NodeNature.ToString());
if (OriginalNodeContent != null)
{
XmlElement originalNode = xmlDoc.CreateElement("OriginalNodeContent");
XmlElement nodeContent = nodeElement.OwnerDocument.CreateElement(OriginalNodeContent.Name);
foreach (XmlAttribute attribute in OriginalNodeContent.Attributes)
{
nodeContent.SetAttribute(attribute.Name, attribute.Value);
}
for (int i = 0; i < OriginalNodeContent.ChildNodes.Count; i++)
{
XmlNode child =
nodeContent.OwnerDocument.ImportNode(OriginalNodeContent.ChildNodes[i], true);
nodeContent.AppendChild(child.CloneNode(true));
}
originalNode.AppendChild(nodeContent);
nodeElement.AppendChild(originalNode);
}
}
if (context == SaveContext.File)
{
//When save files, only save the original node's content,
//instead of saving the dummy node.
if (OriginalNodeContent != null)
{
nodeElement.RemoveAll();
foreach (XmlAttribute attribute in OriginalNodeContent.Attributes)
{
nodeElement.SetAttribute(attribute.Name, attribute.Value);
}
//overwrite the guid/x/y value of the original node.
nodeElement.SetAttribute("guid", nodeElement.GetAttribute("guid"));
nodeElement.SetAttribute("x", nodeElement.GetAttribute("x"));
nodeElement.SetAttribute("y", nodeElement.GetAttribute("y"));
for (int i = 0; i < OriginalNodeContent.ChildNodes.Count; i++)
{
XmlNode child = nodeElement.OwnerDocument.ImportNode(OriginalNodeContent.ChildNodes[i], true);
nodeElement.AppendChild(child.CloneNode(true));
}
}
else
{
nodeElement.SetAttribute("inputCount", InputCount.ToString());
nodeElement.SetAttribute("outputCount", OutputCount.ToString());
nodeElement.SetAttribute("legacyNodeName", LegacyNodeName);
nodeElement.SetAttribute("legacyAssembly", LegacyAssembly);
nodeElement.SetAttribute("nodeNature", NodeNature.ToString());
}
}
}