/* $Id$ * JavaScript helper for CSS 'subroutines'. * Copyright (C) 2005 Jan Kratochvil * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; exactly version 2 of June 1991 is required * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ // Required CSS rule syntax: .PARENTNAME XXX[-lace-inherit="CHILDNAME"] { } // Be aware: CSS is case insensitive but HTML/XHTML is (sometimes?) sensitive. // Be aware: Works only on CSS directly applied by the "class" attribute! // TODO: Warns on invalid inheritance rules. var map; function map_set(from,to) { if (!map) map=new Array(); if (!map[from]) map[from]=new Array(); if (map[from][to]) return true; map[from][to]=true; return false; } function css_inherit_node(node) { if (node.className) { var classone_re=node.className.toLowerCase().match(/(\S+)/g); for (var classonei in classone_re) { var classone=classone_re[classonei]; if (!map || !map[classone]) continue; for (var target in map[classone]) node.className+=" "+target; } } for (node=node.firstChild;node!=null;node=node.nextSibling) css_inherit_node(node); } function css_inherit() { if (document.styleSheets) for (var stylei in document.styleSheets) { var style=document.styleSheets[stylei]; if (!style.cssRules) continue; for (var rulei in style.cssRules) { var rule=style.cssRules[rulei]; if (!rule.selectorText) continue; var re; if (!(re=rule.selectorText.toLowerCase() .match(/^\s*[.](\w+).*\[\s*-lace-inherit\s*=\s*"?([^"]*)"?\s*\]\s*/))) continue; var from_string=re[1]; var to_string=re[2]; var to_re=to_string.match(/\S+/g); for (var to_rei in to_re) { var to_item=to_re[to_rei]; map_set(from_string,to_item); } } } var change; do { change=false; for (var from in map) for (var to in map[from]) { if (!map[to]) continue; for (var filler in map[to]) if (!map_set(from,filler)) change=true; } } while (change); /* Gecko: document.createNodeIterator(...)==NS_ERROR_NOT_IMPLEMENTED */ css_inherit_node(document); } /* Origin: http://simon.incutio.com/archive/2004/05/26/addLoadEvent */ function addLoadEvent(func) { var onload_orig=window.onload; if (typeof(onload_orig)!='function') window.onload = func; else window.onload = function() { onload_orig(); func(); }; } addLoadEvent(css_inherit);