    /**
     * A Provider implementation which saves and retrieves state via cookies. The CookieProvider supports the usual cookie
     * options, such as:
     *
     * - {@link #path}
     * - {@link #expires}
     * - {@link #domain}
     * - {@link #secure}
     *
     * Example:
     *
     *     var cp = Ext.create('Ext.state.CookieProvider', {
     *         path: "/cgi-bin/",
     *         expires: new Date(new Date().getTime()+(1000*60*60*24*30)), //30 days
     *         domain: "sencha.com"
     *     });
     *
     *     Ext.state.Manager.setProvider(cp);
     *
     */
    Ext.define('Ext.state.CookieProvider', {
        extend: 'Ext.state.Provider',

        /**
         * @cfg {String} path
         * The path for which the cookie is active. Defaults to root '/' which makes it active for all pages in the site.
         */

        /**
         * @cfg {Date} expires
         * The cookie expiration date. Defaults to 7 days from now.
         */

        /**
         * @cfg {String} domain
         * The domain to save the cookie for. Note that you cannot specify a different domain than your page is on, but you can
         * specify a sub-domain, or simply the domain itself like 'sencha.com' to include all sub-domains if you need to access
         * cookies across different sub-domains. Defaults to null which uses the same domain the page is running on including
         * the 'www' like 'www.sencha.com'.
         */

        /**
         * @cfg {Boolean} [secure=false]
         * True if the site is using SSL
         */

        /**
         * Creates a new CookieProvider.
         * @param {Object} [config] Config object.
         */
        constructor : function(config){
            var me = this;
            me.path = "/";
            me.expires = new Date(Ext.Date.now() + (1000*60*60*24*7)); //7 days
            me.domain = null;
            me.secure = false;
            me.callParent(arguments);
            me.state = me.readCookies();
        },

        // private
        set : function(name, value){
            var me = this;

            if(typeof value == "undefined" || value === null){
                me.clear(name);
                return;
            }
            me.setCookie(name, value);
            me.callParent(arguments);
        },

        // private
        clear : function(name){
            this.clearCookie(name);
            this.callParent(arguments);
        },

        // private
        readCookies : function(){
            var cookies = {},
                c = document.cookie + ";",
                re = /\s?(.*?)=(.*?);/g,
                prefix = this.prefix,
                len = prefix.length,
                matches,
                name,
                value;

            while((matches = re.exec(c)) != null){
                name = matches[1];
                value = matches[2];
                if (name && name.substring(0, len) == prefix){
                    cookies[name.substr(len)] = this.decodeValue(value);
                }
            }
            return cookies;
        },

        // private
        setCookie : function(name, value){
            var me = this;

            document.cookie = me.prefix + name + "=" + me.encodeValue(value) +
               ((me.expires == null) ? "" : ("; expires=" + me.expires.toGMTString())) +
               ((me.path == null) ? "" : ("; path=" + me.path)) +
               ((me.domain == null) ? "" : ("; domain=" + me.domain)) +
               ((me.secure == true) ? "; secure" : "");
        },

        // private
        clearCookie : function(name){
            var me = this;

            document.cookie = me.prefix + name + "=null; expires=Thu, 01-Jan-70 00:00:01 GMT" +
               ((me.path == null) ? "" : ("; path=" + me.path)) +
               ((me.domain == null) ? "" : ("; domain=" + me.domain)) +
               ((me.secure == true) ? "; secure" : "");
        }
    });