public void Visit(ISvgUseElement element)
{
SvgUseElement useElement = (SvgUseElement)element;
SvgDocument document = useElement.OwnerDocument;
XmlElement refEl = useElement.ReferencedElement;
if (refEl == null)
{
return;
}
bool isImported = false;
// For the external node, the documents are different, and we may not be
// able to insert this node, so we first import it...
if (useElement.OwnerDocument != refEl.OwnerDocument)
{
var importedNode = useElement.OwnerDocument.ImportNode(refEl, true) as XmlElement;
if (importedNode != null)
{
var importedSvgElement = importedNode as SvgElement;
if (importedSvgElement != null)
{
importedSvgElement.Imported = true;
importedSvgElement.ImportNode = refEl as SvgElement;
importedSvgElement.ImportDocument = refEl.OwnerDocument as SvgDocument;
}
refEl = importedNode;
isImported = true;
}
}
XmlElement refElParent = (XmlElement)refEl.ParentNode;
useElement.OwnerDocument.Static = true;
useElement.CopyToReferencedElement(refEl);
if (!isImported) // if imported, we do not need to remove it...
{
refElParent.RemoveChild(refEl);
}
useElement.AppendChild(refEl);
// Now, render the use element...
var refElement = useElement?.FirstChild;
IElementVisitorTarget evt = refElement as IElementVisitorTarget;
if (evt != null)
{
evt.Accept(this);
}
useElement.RemoveChild(refEl);
useElement.RestoreReferencedElement(refEl);
if (!isImported)
{
refElParent.AppendChild(refEl);
}
useElement.OwnerDocument.Static = false;
}
public void Accept(IElementVisitor visitor)
{
visitor.Visit(this);
if (this.HasChildNodes)
{
visitor.BeginContainer(this);
foreach (var item in this.ChildNodes)
{
IElementVisitorTarget evt = item as IElementVisitorTarget;
if (evt != null)
{
evt.Accept(visitor);
}
}
visitor.EndContainer(this);
}
}
