internal HtmlNode SelectSingleNode(string xpath, System.Xml.Xsl.XsltContext additionalContext)
{
Debug.Assert(m_XmlNode != null);
Debug.Assert(xpath != null);
if (xpath == null)
{
throw new ArgumentNullException("xpath");
}
//TODO: The XPATH is mixes case because if not some XPath functions will not work
// May be we need an XPathExpression parser, which will only change the
// case of the elements and attribute names !!! Will be very cool.
XmlNode result = m_XmlNode.SelectSingleNode(xpath, XPath.HtmlXsltContext.GetInstance(additionalContext));
if (result == null || (!(result is XmlRefElement) && !(result is XmlRefAttribute)))
{
return(null);
}
else
{
IHtmlNodeReferenceHolder resRef = result as IHtmlNodeReferenceHolder;
if (resRef != null)
{
return(resRef.HtmlNodeReference);
}
Debug.Assert(false);
throw new XPathException("The type returned by an XPath operation was unexpected!");
}
}
internal bool RemoveAttribute(string attName)
{
XmlAttribute xmlAtt = ParentNode.m_XmlNode.Attributes[attName];
IHtmlNodeReferenceHolder refHolder = xmlAtt as IHtmlNodeReferenceHolder;
if (xmlAtt != null &&
refHolder != null)
{
ParentNode.m_XmlNode.Attributes.Remove(xmlAtt);
m_HtmlAttList.Remove((HtmlAttribute)refHolder.HtmlNodeReference);
ParentNode.OwnerDocument.m_FixupManager.AddOrUpdateFixUp(FixupType.Remove, refHolder.HtmlNodeReference, xmlAtt.Value);
return(true);
}
return(false);
}
internal HtmlAttribute this[string attributeName]
{
get
{
if (ParentNode == null)
{
throw new InvalidOperationException("No parent has been set.");
}
if (ParentNode.m_XmlNode.Attributes == null)
{
return(null);
}
// First try the same case
XmlAttribute att = ParentNode.m_XmlNode.Attributes[attributeName];
if (att == null)
{
foreach (XmlAttribute attTest in ParentNode.m_XmlNode.Attributes)
{
if (attTest.Name.Equals(attributeName, StringComparison.InvariantCultureIgnoreCase))
{
att = attTest;
break;
}
}
}
IHtmlNodeReferenceHolder attNodeRef = att as IHtmlNodeReferenceHolder;
if (att != null)
{
HtmlNode attNode = attNodeRef.HtmlNodeReference;
Debug.Assert(attNode is HtmlAttribute);
return(attNode as HtmlAttribute);
}
else
{
return(null);
}
}
}
internal HtmlNodeList(XmlNodeList nodeList)
{
Debug.Assert(nodeList != null);
m_List = new List <HtmlNode>();
foreach (XmlNode node in nodeList)
{
IHtmlNodeReferenceHolder nodeRef = node as IHtmlNodeReferenceHolder;
if (nodeRef != null)
{
m_List.Add(nodeRef.HtmlNodeReference);
}
else
{
throw new HtmlParserException("Unexpected node type!");
}
}
}