private void resolveLinks(Field richTextField, TcmUri pageUri)
{
// Find any <a> nodes with xlink:href="tcm attribute
string nodeText = richTextField.Value;
XmlDocument tempDocument = new XmlDocument();
tempDocument.LoadXml("<tempRoot>" + nodeText + "</tempRoot>");
XmlNamespaceManager nsManager = new XmlNamespaceManager(tempDocument.NameTable);
nsManager.AddNamespace("xlink", "http://www.w3.org/1999/xlink");
XmlNodeList linkNodes = tempDocument.SelectNodes("//*[local-name()='a'][@xlink:href[starts-with(string(.),'tcm:')]]", nsManager);
foreach (XmlNode linkElement in linkNodes)
{
// TODO test with including the Page Uri, seems to always link with Source Page
//string linkText = linkFactory.ResolveLink(pageUri.ToString(), linkElement.Attributes["xlink:href"].Value, "tcm:0-0-0");
string linkText = LinkFactory.ResolveLink("tcm:0-0-0", linkElement.Attributes["xlink:href"].Value, "tcm:0-0-0");
if (!string.IsNullOrEmpty(linkText))
{
XmlAttribute linkUrl = tempDocument.CreateAttribute("href");
linkUrl.Value = linkText;
linkElement.Attributes.Append(linkUrl);
// Remove the other xlink attributes from the a element
for (int attribCount = linkElement.Attributes.Count - 1; attribCount >= 0; attribCount--)
{
if (!string.IsNullOrEmpty(linkElement.Attributes[attribCount].NamespaceURI))
{
linkElement.Attributes.RemoveAt(attribCount);
}
}
}
}
if (linkNodes.Count > 0)
{
richTextField.Values.Clear();
richTextField.Values.Add(tempDocument.DocumentElement.InnerXml);
}
}
/// <summary>
/// Extension method on String to resolve rich text.
/// Use as: Model.Field["key"].Value.ResolveRichText()
/// </summary>
/// <param name="value"></param>
/// <returns>MvcHtmlString (resolved rich text)</returns>
public static MvcHtmlString ResolveRichText(this String value)
{
LinkFactory linkFactory = new LinkFactory();
XmlDocument doc = new XmlDocument();
doc.LoadXml(string.Format("<xhtml>{0}</xhtml>", value));
XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);
nsmgr.AddNamespace("xhtml", "http://www.w3.org/1999/xhtml");
nsmgr.AddNamespace("xlink", "http://www.w3.org/1999/xlink");
// resolve links which haven't been resolved
foreach (XmlNode link in doc.SelectNodes("//xhtml:a[@xlink:href[starts-with(string(.),'tcm:')]][@xhtml:href='' or not(@xhtml:href)]", nsmgr))
{
string tcmuri = link.Attributes["xlink:href"].Value;
string linkUrl = linkFactory.ResolveLink(tcmuri);
if (!string.IsNullOrEmpty(linkUrl))
{
// add href
XmlAttribute href = doc.CreateAttribute("xhtml:href");
href.Value = linkUrl;
link.Attributes.Append(href);
// remove all xlink attributes
foreach (XmlAttribute xlinkAttr in link.SelectNodes("//@xlink:*", nsmgr))
{
link.Attributes.Remove(xlinkAttr);
}
}
else
{
// copy child nodes of link so we keep them
foreach (XmlNode child in link.ChildNodes)
{
link.ParentNode.InsertBefore(child.CloneNode(true), link);
}
// remove link node
link.ParentNode.RemoveChild(link);
}
}
return new MvcHtmlString(doc.DocumentElement.InnerXml);
}
