private void CreateAnchor()
{
if (_document != null)
{
var num = Math.Max(1, Math.Min(_location.Line, _document.TotalNumberOfLines));
var length = _document.GetLine(num).Length;
var offset = _document.PositionToOffset(num, Math.Max(1, Math.Min(_location.Column, length + 1)));
Anchor = _document.CreateAnchor(offset);
Anchor.MovementType = AnchorMovementType.AfterInsertion;
Anchor.Deleted += AnchorDeleted;
}
else
{
Anchor = null;
}
}
