Function to get html element lang value

nel/include/nel/gui/html_element.h

@@ -84,6 +84,9 @@ namespace NLGUI
 		TStyle getPseudo(const std::string &key) const;
 		void setPseudo(const std::string &key, const TStyle &style);
 
+		// return lang property for css :lang() pseudo class
+		std::string getInheritedLanguage() const;
+
 	private:
 		// pseudo elements like ":before" and ":after"
 		std::map<std::string, TStyle> _Pseudo;

nel/src/gui/html_element.cpp

@@ -122,6 +122,21 @@ namespace NLGUI
 		}
 	}
 
+	// ***************************************************************************
+	std::string CHtmlElement::getInheritedLanguage() const
+	{
+		const CHtmlElement *node = this;
+		while(node)
+		{
+			if (node->hasAttribute("lang"))
+				return node->getAttribute("lang");
+
+			node = node->parent;
+		}
+
+		return "";
+	}
+
 	// ***************************************************************************
 	std::string CHtmlElement::toString(bool tree, uint depth) const
 	{