public XmlTreeNode GetTreeNode(XmlDocument owner, XmlTreeNode target, XmlTreeView view)
{
view.BeginUpdate();
XmlTreeNode node = null;
try
{
node = view.CreateTreeNode();
if (this.img == -1 && this.xml != null)
{
Regex regex = new Regex(@"[:_.\w]+\s*=\s*(""[^""]*"")|('[^']*')\s*");
Match m = regex.Match(xml);
string trimmed = xml.Trim();
if (m.Success && m.Index == 0 && m.Length == xml.Length)
{
nodeType = (int)XmlNodeType.Attribute;
img = (int)NodeImage.Attribute - 1;
}
else if (trimmed.StartsWith("<?"))
{
nodeType = (int)XmlNodeType.ProcessingInstruction;
img = (int)NodeImage.PI - 1;
}
else if (trimmed.StartsWith("<!--"))
{
nodeType = (int)XmlNodeType.Comment;
img = (int)NodeImage.Comment - 1;
}
else if (trimmed.StartsWith("<![CDATA["))
{
nodeType = (int)XmlNodeType.CDATA;
img = (int)NodeImage.CData - 1;
}
else if (trimmed.StartsWith("<"))
{
nodeType = (int)XmlNodeType.Element;
img = (int)NodeImage.Element - 1;
}
else {
nodeType = (int)XmlNodeType.Text;
img = (int)NodeImage.Text - 1;
}
}
XmlNode xn = null;
XmlNode context = (target != null) ? target.Node : owner;
if (this.nodeType == (int)XmlNodeType.Attribute)
{
int i = this.xml.IndexOf('=');
if (i > 0)
{
string name = this.xml.Substring(0, i).Trim();
XmlName qname = XmlHelpers.ParseName(context, name, XmlNodeType.Attribute);
xn = owner.CreateAttribute(qname.Prefix, qname.LocalName, qname.NamespaceUri);
string s = this.xml.Substring(i + 1).Trim();
if (s.Length > 2)
{
char quote = s[0];
s = s.Substring(1, s.Length - 2); // strip off quotes
// un-escape quotes in the value.
xn.Value = s.Replace(quote == '\'' ? "'" : """, quote.ToString());
}
}
}
else {
XmlNamespaceManager nsmgr = XmlHelpers.GetNamespaceScope(context);
XmlParserContext pcontext = new XmlParserContext(owner.NameTable, nsmgr, null, XmlSpace.None);
XmlTextReader r = null;
if (this.xml != null)
{
r = new XmlTextReader(this.xml, XmlNodeType.Element, pcontext);
}
else {
r = new XmlTextReader(this.stm, XmlNodeType.Element, pcontext);
}
r.WhitespaceHandling = WhitespaceHandling.Significant;
// TODO: add multi-select support, so we can insert multiple nodes also.
// And find valid nodes (for example, don't attempt to insert Xml declaration
// if target node is not at the top of the document, etc).
// For now we just favor XML elements over other node types.
ArrayList list = new ArrayList();
while (true)
{
XmlNode rn = owner.ReadNode(r);
if (rn == null)
break;
if (rn is XmlElement)
{
xn = rn;
NormalizeNamespaces((XmlElement)rn, nsmgr);
}
list.Add(rn);
}
if (xn == null && list.Count > 0)
xn = list[0] as XmlNode;
}
node.Node = xn;
if (!(xn is XmlAttribute))
{
view.Invalidate();
if (xn is XmlElement)
{
if (node.Nodes.Count <= 1)
{
this.img = ((int)NodeImage.Leaf - 1);
}
}
}
}
finally
{
view.EndUpdate();
}
return node;
}
