-/*
-Copyright (c) 2009, Yahoo! Inc. All rights reserved.
-Code licensed under the BSD License:
-http://developer.yahoo.net/yui/license.txt
-version: 2.8.0r4
-*/
-/**
- * Utilities for cookie management
- * @namespace YAHOO.util
- * @module cookie
- */
-YAHOO.namespace("util");
-
-/**
- * Cookie utility.
- * @class Cookie
- * @static
- */
-YAHOO.util.Cookie = {
-
- //-------------------------------------------------------------------------
- // Private Methods
- //-------------------------------------------------------------------------
-
- /**
- * Creates a cookie string that can be assigned into document.cookie.
- * @param {String} name The name of the cookie.
- * @param {String} value The value of the cookie.
- * @param {Boolean} encodeValue True to encode the value, false to leave as-is.
- * @param {Object} options (Optional) Options for the cookie.
- * @return {String} The formatted cookie string.
- * @method _createCookieString
- * @private
- * @static
- */
- _createCookieString : function (name /*:String*/, value /*:Variant*/, encodeValue /*:Boolean*/, options /*:Object*/) /*:String*/ {
-
- //shortcut
- var lang = YAHOO.lang,
- text = encodeURIComponent(name) + "=" + (encodeValue ? encodeURIComponent(value) : value);
-
-
- if (lang.isObject(options)){
- //expiration date
- if (options.expires instanceof Date){
- text += "; expires=" + options.expires.toUTCString();
- }
-
- //path
- if (lang.isString(options.path) && options.path !== ""){
- text += "; path=" + options.path;
- }
-
- //domain
- if (lang.isString(options.domain) && options.domain !== ""){
- text += "; domain=" + options.domain;
- }
-
- //secure
- if (options.secure === true){
- text += "; secure";
- }
- }
-
- return text;
- },
-
- /**
- * Formats a cookie value for an object containing multiple values.
- * @param {Object} hash An object of key-value pairs to create a string for.
- * @return {String} A string suitable for use as a cookie value.
- * @method _createCookieHashString
- * @private
- * @static
- */
- _createCookieHashString : function (hash /*:Object*/) /*:String*/ {
-
- //shortcuts
- var lang = YAHOO.lang;
-
- if (!lang.isObject(hash)){
- throw new TypeError("Cookie._createCookieHashString(): Argument must be an object.");
- }
-
- var text /*:Array*/ = [];
-
- for (var key in hash){
- if (lang.hasOwnProperty(hash, key) && !lang.isFunction(hash[key]) && !lang.isUndefined(hash[key])){
- text.push(encodeURIComponent(key) + "=" + encodeURIComponent(String(hash[key])));
- }
- }
-
- return text.join("&");
- },
-
- /**
- * Parses a cookie hash string into an object.
- * @param {String} text The cookie hash string to parse. The string should already be URL-decoded.
- * @return {Object} An object containing entries for each cookie value.
- * @method _parseCookieHash
- * @private
- * @static
- */
- _parseCookieHash : function (text /*:String*/) /*:Object*/ {
-
- var hashParts /*:Array*/ = text.split("&"),
- hashPart /*:Array*/ = null,
- hash /*:Object*/ = {};
-
- if (text.length > 0){
- for (var i=0, len=hashParts.length; i < len; i++){
- hashPart = hashParts[i].split("=");
- hash[decodeURIComponent(hashPart[0])] = decodeURIComponent(hashPart[1]);
- }
- }
-
- return hash;
- },
-
- /**
- * Parses a cookie string into an object representing all accessible cookies.
- * @param {String} text The cookie string to parse.
- * @param {Boolean} decode (Optional) Indicates if the cookie values should be decoded or not. Default is true.
- * @return {Object} An object containing entries for each accessible cookie.
- * @method _parseCookieString
- * @private
- * @static
- */
- _parseCookieString : function (text /*:String*/, decode /*:Boolean*/) /*:Object*/ {
-
- var cookies /*:Object*/ = {};
-
- if (YAHOO.lang.isString(text) && text.length > 0) {
-
- var decodeValue = (decode === false ? function(s){return s;} : decodeURIComponent);
-
- //if (/[^=]+=[^=;]?(?:; [^=]+=[^=]?)?/.test(text)){
- var cookieParts /*:Array*/ = text.split(/;\s/g),
- cookieName /*:String*/ = null,
- cookieValue /*:String*/ = null,
- cookieNameValue /*:Array*/ = null;
-
- for (var i=0, len=cookieParts.length; i < len; i++){
-
- //check for normally-formatted cookie (name-value)
- cookieNameValue = cookieParts[i].match(/([^=]+)=/i);
- if (cookieNameValue instanceof Array){
- try {
- cookieName = decodeURIComponent(cookieNameValue[1]);
- cookieValue = decodeValue(cookieParts[i].substring(cookieNameValue[1].length+1));
- } catch (ex){
- //ignore the entire cookie - encoding is likely invalid
- }
- } else {
- //means the cookie does not have an "=", so treat it as a boolean flag
- cookieName = decodeURIComponent(cookieParts[i]);
- cookieValue = "";
- }
- cookies[cookieName] = cookieValue;
- }
- //}
- }
-
- return cookies;
- },
-
- //-------------------------------------------------------------------------
- // Public Methods
- //-------------------------------------------------------------------------
-
- /**
- * Determines if the cookie with the given name exists. This is useful for
- * Boolean cookies (those that do not follow the name=value convention).
- * @param {String} name The name of the cookie to check.
- * @return {Boolean} True if the cookie exists, false if not.
- * @method exists
- * @static
- */
- exists: function(name) {
-
- if (!YAHOO.lang.isString(name) || name === ""){
- throw new TypeError("Cookie.exists(): Cookie name must be a non-empty string.");
- }
-
- var cookies /*:Object*/ = this._parseCookieString(document.cookie, true);
-
- return cookies.hasOwnProperty(name);
- },
-
- /**
- * Returns the cookie value for the given name.
- * @param {String} name The name of the cookie to retrieve.
- * @param {Object|Function} options (Optional) An object containing one or more
- * cookie options: raw (true/false) and converter (a function).
- * The converter function is run on the value before returning it. The
- * function is not used if the cookie doesn't exist. The function can be
- * passed instead of the options object for backwards compatibility.
- * @return {Variant} If no converter is specified, returns a string or null if
- * the cookie doesn't exist. If the converter is specified, returns the value
- * returned from the converter or null if the cookie doesn't exist.
- * @method get
- * @static
- */
- get : function (name /*:String*/, options /*:Variant*/) /*:Variant*/{
-
- var lang = YAHOO.lang,
- converter;
-
- if (lang.isFunction(options)) {
- converter = options;
- options = {};
- } else if (lang.isObject(options)) {
- converter = options.converter;
- } else {
- options = {};
- }
-
- var cookies /*:Object*/ = this._parseCookieString(document.cookie, !options.raw);
-
- if (!lang.isString(name) || name === ""){
- throw new TypeError("Cookie.get(): Cookie name must be a non-empty string.");
- }
-
- if (lang.isUndefined(cookies[name])) {
- return null;
- }
-
- if (!lang.isFunction(converter)){
- return cookies[name];
- } else {
- return converter(cookies[name]);
- }
- },
-
- /**
- * Returns the value of a subcookie.
- * @param {String} name The name of the cookie to retrieve.
- * @param {String} subName The name of the subcookie to retrieve.
- * @param {Function} converter (Optional) A function to run on the value before returning
- * it. The function is not used if the cookie doesn't exist.
- * @return {Variant} If the cookie doesn't exist, null is returned. If the subcookie
- * doesn't exist, null if also returned. If no converter is specified and the
- * subcookie exists, a string is returned. If a converter is specified and the
- * subcookie exists, the value returned from the converter is returned.
- * @method getSub
- * @static
- */
- getSub : function (name, subName, converter) {
-
- var lang = YAHOO.lang,
- hash = this.getSubs(name);
-
- if (hash !== null) {
-
- if (!lang.isString(subName) || subName === ""){
- throw new TypeError("Cookie.getSub(): Subcookie name must be a non-empty string.");
- }
-
- if (lang.isUndefined(hash[subName])){
- return null;
- }
-
- if (!lang.isFunction(converter)){
- return hash[subName];
- } else {
- return converter(hash[subName]);
- }
- } else {
- return null;
- }
-
- },
-
- /**
- * Returns an object containing name-value pairs stored in the cookie with the given name.
- * @param {String} name The name of the cookie to retrieve.
- * @return {Object} An object of name-value pairs if the cookie with the given name
- * exists, null if it does not.
- * @method getSubs
- * @static
- */
- getSubs : function (name /*:String*/) /*:Object*/ {
-
- var isString = YAHOO.lang.isString;
-
- //check cookie name
- if (!isString(name) || name === ""){
- throw new TypeError("Cookie.getSubs(): Cookie name must be a non-empty string.");
- }
-
- var cookies = this._parseCookieString(document.cookie, false);
- if (isString(cookies[name])){
- return this._parseCookieHash(cookies[name]);
- }
- return null;
- },
-
- /**
- * Removes a cookie from the machine by setting its expiration date to
- * sometime in the past.
- * @param {String} name The name of the cookie to remove.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string),
- * and secure (true/false). The expires option will be overwritten
- * by the method.
- * @return {String} The created cookie string.
- * @method remove
- * @static
- */
- remove : function (name /*:String*/, options /*:Object*/) /*:String*/ {
-
- //check cookie name
- if (!YAHOO.lang.isString(name) || name === ""){
- throw new TypeError("Cookie.remove(): Cookie name must be a non-empty string.");
- }
-
- //set options - clone options so the original isn't affected
- options = YAHOO.lang.merge(options || {}, {
- expires: new Date(0)
- });
-
- //set cookie
- return this.set(name, "", options);
- },
-
- /**
- * Removes a subcookie with a given name. Removing the last subcookie
- * won't remove the entire cookie unless options.removeIfEmpty is true.
- * @param {String} name The name of the cookie in which the subcookie exists.
- * @param {String} subName The name of the subcookie to remove.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * removeIfEmpty (true/false), and secure (true/false). This must be the same
- * settings as the original subcookie.
- * @return {String} The created cookie string.
- * @method removeSub
- * @static
- */
- removeSub : function(name /*:String*/, subName /*:String*/, options /*:Object*/) /*:String*/ {
-
- var lang = YAHOO.lang;
-
- options = options || {};
-
- //check cookie name
- if (!lang.isString(name) || name === ""){
- throw new TypeError("Cookie.removeSub(): Cookie name must be a non-empty string.");
- }
-
- //check subcookie name
- if (!lang.isString(subName) || subName === ""){
- throw new TypeError("Cookie.removeSub(): Subcookie name must be a non-empty string.");
- }
-
- //get all subcookies for this cookie
- var subs = this.getSubs(name);
-
- //delete the indicated subcookie
- if (lang.isObject(subs) && lang.hasOwnProperty(subs, subName)){
- delete subs[subName];
-
- if (!options.removeIfEmpty) {
- //reset the cookie
-
- return this.setSubs(name, subs, options);
- } else {
- //reset the cookie if there are subcookies left, else remove
- for (var key in subs){
- if (lang.hasOwnProperty(subs, key) && !lang.isFunction(subs[key]) && !lang.isUndefined(subs[key])){
- return this.setSubs(name, subs, options);
- }
- }
-
- return this.remove(name, options);
- }
- } else {
- return "";
- }
-
- },
-
- /**
- * Sets a cookie with a given name and value.
- * @param {String} name The name of the cookie to set.
- * @param {Variant} value The value to set for the cookie.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * raw (true/false), and secure (true/false).
- * @return {String} The created cookie string.
- * @method set
- * @static
- */
- set : function (name /*:String*/, value /*:Variant*/, options /*:Object*/) /*:String*/ {
-
- var lang = YAHOO.lang;
-
- options = options || {};
-
- if (!lang.isString(name)){
- throw new TypeError("Cookie.set(): Cookie name must be a string.");
- }
-
- if (lang.isUndefined(value)){
- throw new TypeError("Cookie.set(): Value cannot be undefined.");
- }
-
- var text /*:String*/ = this._createCookieString(name, value, !options.raw, options);
- document.cookie = text;
- return text;
- },
-
- /**
- * Sets a sub cookie with a given name to a particular value.
- * @param {String} name The name of the cookie to set.
- * @param {String} subName The name of the subcookie to set.
- * @param {Variant} value The value to set.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * and secure (true/false).
- * @return {String} The created cookie string.
- * @method setSub
- * @static
- */
- setSub : function (name /*:String*/, subName /*:String*/, value /*:Variant*/, options /*:Object*/) /*:String*/ {
-
- var lang = YAHOO.lang;
-
- if (!lang.isString(name) || name === ""){
- throw new TypeError("Cookie.setSub(): Cookie name must be a non-empty string.");
- }
-
- if (!lang.isString(subName) || subName === ""){
- throw new TypeError("Cookie.setSub(): Subcookie name must be a non-empty string.");
- }
-
- if (lang.isUndefined(value)){
- throw new TypeError("Cookie.setSub(): Subcookie value cannot be undefined.");
- }
-
- var hash /*:Object*/ = this.getSubs(name);
-
- if (!lang.isObject(hash)){
- hash = {};
- }
-
- hash[subName] = value;
-
- return this.setSubs(name, hash, options);
-
- },
-
- /**
- * Sets a cookie with a given name to contain a hash of name-value pairs.
- * @param {String} name The name of the cookie to set.
- * @param {Object} value An object containing name-value pairs.
- * @param {Object} options (Optional) An object containing one or more
- * cookie options: path (a string), domain (a string), expires (a Date object),
- * and secure (true/false).
- * @return {String} The created cookie string.
- * @method setSubs
- * @static
- */
- setSubs : function (name /*:String*/, value /*:Object*/, options /*:Object*/) /*:String*/ {
-
- var lang = YAHOO.lang;
-
- if (!lang.isString(name)){
- throw new TypeError("Cookie.setSubs(): Cookie name must be a string.");
- }
-
- if (!lang.isObject(value)){
- throw new TypeError("Cookie.setSubs(): Cookie value must be an object.");
- }
-
- var text /*:String*/ = this._createCookieString(name, this._createCookieHashString(value), false, options);
- document.cookie = text;
- return text;
- }
-
-};
-
-YAHOO.register("cookie", YAHOO.util.Cookie, {version: "2.8.0r4", build: "2449"});