First Commit.

source/cssManager.js

@@ -0,0 +1,63 @@
+/*
+
+	Copyright (c) 2020, 2023, The Unified Company.
+
+	This code is part of Unify.
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE,
+	as published by the Free Software Foundation.
+	See the GNU AFFERO GENERAL PUBLIC LICENSE, for more details.
+
+	https://unifyjs.org 
+
+*/
+
+import tools	 		from './tools.js';
+
+export default class cssManager{
+
+	rules = new Array();
+	
+	addRule( selector, body ) {
+	
+		var rule = new Object();
+		
+		rule.selector	= selector;
+		rule.body		= body;
+		
+		this.rules[ selector ] = body;
+
+	}
+	
+	composeCss( selector, body ) {
+	
+		if( body == "") {
+		
+			return "";
+		
+		}
+
+		return "\n" + selector + "{ " + "\n" + body + "\n" + " } " + "\n";
+	
+	}
+	
+	getRule( selector, body ) {
+
+		selector = tools.cleanRollup( selector );
+	
+		if( this.rules[ selector ] ) {
+		
+			return "";
+		
+		} else {
+
+			this.addRule( selector, body );
+			
+			return this.composeCss( selector, body );
+
+		}
+
+	}
+
+}