internal StyleRuleCollection(mozIDOMWindowProxy window, GeckoStyleSheet styleSheet)
{
StyleSheet = styleSheet;
_window = window;
_styleSheet = new Lazy <WebIDL.CSSStyleSheet>(() => new CSSStyleSheet(window, styleSheet.DomStyleSheet));
_ruleList = new Lazy <CSSRuleList>(() => new CSSRuleList((mozIDOMWindowProxy)_window, _styleSheet.Value.CssRules));
this.List = _styleSheet.Value.CssRules;
}
internal StyleRuleCollection(GeckoStyleSheet styleSheet)
{
StyleSheet = styleSheet;
this.List = GetRuleList();
}