public SvgElementInstanceList(SvgUseElement useElement, SvgElementInstance parent)
{
if (parent.CorrespondingElement == null)
{
// Handle non SVGElement cases
items = new SvgElementInstance[0];
}
else if (parent.CorrespondingElement is ISvgUseElement)
{
// Handle recursive SVGUseElement cases
items = new SvgElementInstance[1];
ISvgUseElement iUseElement = (ISvgUseElement)parent.CorrespondingElement;
items[0] = (SvgElementInstance)iUseElement.InstanceRoot;
return;
}
else
{
XmlNodeList xmlChildNodes = parent.CorrespondingElement.ChildNodes;
for (int i = 0; i < xmlChildNodes.Count; i++)
{
items[i] = new SvgElementInstance(xmlChildNodes[i], useElement, parent);
if (i > 0)
{
items[i].SetPreviousSibling(items[i - 1]);
items[i - 1].SetNextSibling(items[i]);
}
}
}
}
public SvgElementInstance(XmlNode refNode, SvgUseElement useElement, SvgElementInstance parent)
{
correspondingUseElement = (ISvgUseElement)useElement;
parentNode = (SvgElementInstance)parent;
correspondingElement = (ISvgElement)refNode;
eventTarget = new EventTarget(this);
}
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)
{
XmlElement importedNode =
useElement.OwnerDocument.ImportNode(refEl, true) as XmlElement;
if (importedNode != null)
{
SvgElement 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;
if (refElement is IElementVisitorTarget evt)
{
evt.Accept(this);
}
useElement.RemoveChild(refEl);
useElement.RestoreReferencedElement(refEl);
if (!isImported)
{
refElParent.AppendChild(refEl);
}
useElement.OwnerDocument.Static = false;
}
public SvgElementInstance(XmlNode refNode, SvgUseElement useElement, SvgElementInstance parent)
{
_correspondingUseElement = useElement;
_parentNode = parent;
_correspondingElement = refNode as ISvgElement;
_eventTarget = new EventTarget(this);
}
public SvgElementInstance(XmlNode refNode, SvgUseElement useElement, SvgElementInstance parent)
{
correspondingUseElement = (ISvgUseElement)useElement;
parentNode = (SvgElementInstance)parent;
correspondingElement = (ISvgElement)refNode;
eventTarget = new EventTarget(this);
}
