protected override void ReplaceRoot(ITextNode element)
{
var node = element as ImmutableBranchNode;
if (node != null)
{
if (!ReferenceEquals(node.Document, this))
{
throw new ArgumentException("Not one of my nodes");
}
if (node.Parent != null)
{
throw new ArgumentException("Not a root node");
}
rootNode = node;
}
else
{
throw new ArgumentException("This document does not allow nested elements.");
}
}
public PlainTextDocument() : base(new StringDocumentContent())
{
rootNode = new ImmutableBranchNode(this);
rules = new TextProcessingRules();
}
