internal HtmlNode(string tag, int htmlStart, int textStart, HtmlContext context, HtmlNode parent) { if (string.IsNullOrEmpty(tag)) { throw new ArgumentNullException("tag"); } if (context == null) { throw new ArgumentNullException("context"); } this.tag = tag; this.htmlStart = htmlStart; this.textStart = textStart; this.textEnd = -1; this.htmlEnd = -1; this.context = context; this.parent = parent; htmlStyles = new List<HtmlStyle>(); inheritedHtmlStyles = new List<HtmlStyle>(); isText = tag == HtmlTag.TEXT; if (parent != null) { parent.AddChild(this); } }