} // Used for Node.Clone().
/// <summary>
/// Create a valid, empty shell of a document, suitable for adding more elements to.
/// </summary>
/// <param name="baseUri">baseUri of document</param>
/// <returns>document with html, head, and body elements.</returns>
static public Document CreateShell(string baseUri)
{
if (baseUri == null)
{
throw new ArgumentNullException("baseUri");
}
Document doc = new Document(baseUri);
Element html = doc.AppendElement("html");
html.AppendElement("head");
html.AppendElement("body");
return(doc);
}
/// <summary>
/// Normalise the document. This happens after the parse phase so generally does not need to be called.
/// Moves any text content that is not in the body element into the body.
/// </summary>
/// <returns>this document after normalisation</returns>
public Document Normalise()
{
Element htmlEl = FindFirstElementByTagName("html", this);
if (htmlEl == null)
{
htmlEl = AppendElement("html");
}
if (Head == null)
{
htmlEl.PrependElement("head");
}
if (Body == null)
{
htmlEl.AppendElement("body");
}
// pull text nodes out of root, html, and head els, and push into body. non-text nodes are already taken care
// of. do in inverse order to maintain text order.
NormaliseTextNodes(Head);
NormaliseTextNodes(htmlEl);
NormaliseTextNodes(this);
NormaliseStructure("head", htmlEl);
NormaliseStructure("body", htmlEl);
return(this);
}