protected override void OnDocumentChanged(EventArgs e)
{
base.OnDocumentChanged(e);
if (_currentDocument != null)
{
_currentDocument.TextChanged -= Document_TextChanged;
}
_currentDocument = Document;
Document.TextChanged += Document_TextChanged;
}
private string GetId(ICSharpCode.AvalonEdit.Document.IDocument doc, ICSharpCode.AvalonEdit.Editing.Caret caret)
{
string amlQuery;
var settings = new System.Xml.XmlReaderSettings();
if (this.Helper == null)
{
amlQuery = doc.Text;
}
else
{
amlQuery = this.Helper.GetCurrentQuery(doc.Text, caret.Offset);
var loc = doc.GetLocation(doc.Text.IndexOf(amlQuery));
settings.LineNumberOffset = loc.Line;
}
string lastItemId = null;
string lastId = null;
var elems = new Stack <string>();
using (var reader = new System.IO.StringReader(amlQuery))
{
using (var xmlReader = System.Xml.XmlReader.Create(reader))
{
var lineInfo = (System.Xml.IXmlLineInfo)xmlReader;
while (xmlReader.Read())
{
switch (xmlReader.NodeType)
{
case System.Xml.XmlNodeType.Element:
case System.Xml.XmlNodeType.EndElement:
if (lineInfo.LineNumber > this.editor.TextArea.Caret.Line ||
(lineInfo.LineNumber == this.editor.TextArea.Caret.Line && (lineInfo.LinePosition - 1) > this.editor.TextArea.Caret.Column))
{
return(lastId ?? lastItemId);
}
break;
}
switch (xmlReader.NodeType)
{
case System.Xml.XmlNodeType.Element:
switch (xmlReader.LocalName)
{
case "Item":
lastItemId = xmlReader.GetAttribute("id");
lastId = xmlReader.GetAttribute("id");
break;
}
if (!xmlReader.IsEmptyElement)
{
elems.Push(xmlReader.LocalName);
}
break;
case System.Xml.XmlNodeType.Text:
if (xmlReader.Value.IsGuid())
{
switch (elems.Peek())
{
case "id":
lastItemId = xmlReader.Value;
break;
default:
lastId = xmlReader.Value;
break;
}
}
break;
case System.Xml.XmlNodeType.EndElement:
lastId = null;
if (elems.Pop() == "Item")
{
lastItemId = null;
}
break;
}
}
}
}
return(null);
}
