public bool intersects(Node node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
if (rootNode == node.rootNode)
{
var parent = node.parentNode;
if (parent != null)
{
HtmlElement startElement = startContainer as HtmlElement;
HtmlElement endElement = endContainer as HtmlElement;
// Get as element:
HtmlElement node1 = node as HtmlElement;
if (endElement == null && startElement == null)
{
// Document - must intersect.
return(true);
}
// End must be after node1 and start must be before node1.
// Node 1 must be after start:
if (startElement != null && (startElement.compareDocumentPosition(node1) & Node.DOCUMENT_POSITION_FOLLOWING) != Node.DOCUMENT_POSITION_FOLLOWING)
{
return(false);
}
// Node 1 must be before end:
if (endElement != null && (endElement.compareDocumentPosition(node1) & Node.DOCUMENT_POSITION_PRECEDING) != Node.DOCUMENT_POSITION_PRECEDING)
{
return(false);
}
}
return(true);
}
return(false);
}