/*
 * jQuery Animate To Class
 * Copyright 2008 Igor Frias Vieira
 * http://igorvieira.com/blog/animate-to-class/
 *
 * Released under the MIT and GPL licenses.
 */

(function($)
{
    $.fn.extend({
        animateToClass : function(to, duration, easing, callback) {
            if(!to){ return this; }
            styles = selectStyle(to);
            if(!styles) return this;
            return this.animate(styles, duration, easing, callback);
        }
    });
    
    function selectStyle(sel)
    {
        if(sel.substr(0,1) != ".") {
            sel = "." + sel;
        }
        
        for(var cont = 0; cont < document.styleSheets.length; cont++) {
            v = document.styleSheets[cont];
            
            attrClass = selectAttr(sel, v);
            if(attrClass != false){
                break;  
            }
        }
        
        if(!attrClass) {
            attrClass = Array();
        }
        
        objStyle = {}
        
        if(attrClass == ""){
            return false;
        }
        
        if(attrClass.match(";")) {
            attrClass = attrClass.split(";");
        } else {
            attrClass = [attrClass];
        }
        
        $(attrClass).each(function(i,v){
            if(v != ""){
                v = v.split(":");
                v[0] = toCamelCase(v[0]);
                
                objStyle[v[0]] = $.trim(v[1]);  
            }
        });
        return objStyle;
    }
    
    function selectAttr(sel, v)
    {
        attrClass = false;  
            
        if($.browser.msie) {
            if(v.rules.length > 0) {
                $(v.rules).each(function(i2,v2){
                    if(sel == v2.selectorText) {
                        attrClass = v2.style.cssText;
                    }
                });
            }
            else if(v.imports.length > 0) {
                $(v.imports).each(function(i2,v2){
                    if(sel == v2.selectorText) {
                        attrClass = v2.style.cssText;
                    }
                    else if(v2 == "[object]" || v2 == "[Object CSSStyleSheet]" || v2 == "[object CSSImportRule]") {
                        return selectAttr(sel, v2);
                    }
                });
            }
        } else {
            $(v.cssRules).each(function(i2,v2){
                if(sel == v2.selectorText) {
                    attrClass = v2.style.cssText;
                } else if(v2 == "[object CSSImportRule]") {
                    return selectAttr(sel, v2.styleSheet);
                }
            });
        }
        return attrClass;
    }
    
    function toCamelCase(str)
    {
        str = $.trim(str);
        str = str.replace(/-/g, " ");
        str = str.toLowerCase();
        
        strArr = str.split(" ");
        
        var nStr = "";
        $(strArr).each(function(i,v){
            if(i == 0){
                nStr += v;
            }else{
                //There was a bug in older version, this correction was sugested by Simon Shepard.
                nStr += v.substr(0,1).toUpperCase();
                nStr += v.substr(1,v.length);
            }
        });
            
        return nStr;
    }
})(jQuery);