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// name = string equal to the name of the instance of the object
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// defaultExpiration = number of units to make the default expiration date for the cookie
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// expirationUnits = 'seconds' | 'minutes' | 'hours' | 'days' | 'months' | 'years' (default is 'days')
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// defaultDomain = string, default domain for cookies; default is current domain minus the server name
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// defaultPath = string, default path for cookies; default is '/'
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function Cookiemanager(name,defaultExpiration,expirationUnits,defaultDomain,defaultPath) {
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// remember our name
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this.name = name;
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// get the default expiration
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this.defaultExpiration = this.getExpiration(defaultExpiration,expirationUnits);
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// set the default domain to defaultDomain if supplied; if not, set it to document.domain
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// if document.domain is numeric, otherwise strip off the server name and use the remainder
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this.defaultDomain = (defaultDomain)?defaultDomain:(document.domain.search(/[a-zA-Z]/) == -1)?document.domain:document.domain.substring(document.domain.indexOf('.') + 1,document.domain.length);
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// set the default path
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this.defaultPath = (defaultPath)?defaultPath:'/';
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// initialize an object to hold all the document's cookies
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this.cookies = new Object();
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// initialize an object to hold expiration dates for the doucment's cookies
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this.expiration = new Object();
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// initialize an object to hold domains for the doucment's cookies
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this.domain = new Object();
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// initialize an object to hold paths for the doucment's cookies
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this.path = new Object();
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// set an onlunload function to write the cookies
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window.onunload = new Function (this.name+'.setDocumentCookies();');
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// get the document's cookies
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this.getDocumentCookies();
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}
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// gets an expiration date for a cookie as a GMT string
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// expiration = integer expressing time in units (default is 7 days)
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// units = 'miliseconds' | 'seconds' | 'minutes' | 'hours' | 'days' | 'months' | 'years' (default is 'days')
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Cookiemanager.prototype.getExpiration = function(expiration,units) {
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// set default expiration time if it wasn't supplied
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expiration = (expiration)?expiration:7;
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// supply default units if units weren't supplied
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units = (units)?units:'days';
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// new date object we'll use to get the expiration time
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var date = new Date();
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// set expiration time according to units supplied
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switch(units) {
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case 'years':
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date.setFullYear(date.getFullYear() + expiration);
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break;
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case 'months':
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date.setMonth(date.getMonth() + expiration);
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break;
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case 'days':
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date.setTime(date.getTime()+(expiration*24*60*60*1000));
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break;
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case 'hours':
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date.setTime(date.getTime()+(expiration*60*60*1000));
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break;
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case 'minutes':
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date.setTime(date.getTime()+(expiration*60*1000));
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break;
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case 'seconds':
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date.setTime(date.getTime()+(expiration*1000));
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break;
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default:
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date.setTime(date.getTime()+expiration);
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break;
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}
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// return expiration as GMT string
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return date.toGMTString();
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}
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// gets all document cookies and populates the .cookies property with them
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Cookiemanager.prototype.getDocumentCookies = function() {
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var cookie,pair;
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// read the document's cookies into an array
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var cookies = document.cookie.split(';');
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// walk through each array element and extract the name and value into the cookies property
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var len = cookies.length;
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for(var i=0;i < len;i++) {
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cookie = cookies[i];
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// strip leading whitespace
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while (cookie.charAt(0)==' ') cookie = cookie.substring(1,cookie.length);
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// split name/value pair into an array
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pair = cookie.split('=');
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// use the cookie name as the property name and value as the value
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// don't touch any cookies except the one for the fontsizer!!
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if (pair[0] == 'efaSize') {
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this.cookies[pair[0]] = pair[1];
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}
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}
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}
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// sets all document cookies
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Cookiemanager.prototype.setDocumentCookies = function() {
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var expires = '';
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var cookies = '';
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var domain = '';
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var path = '';
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for(var name in this.cookies) {
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// see if there's a custom expiration for this cookie; if not use default
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expires = (this.expiration[name])?this.expiration[name]:this.defaultExpiration;
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// see if there's a custom path for this cookie; if not use default
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path = (this.path[name])?this.path[name]:this.defaultPath;
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// see if there's a custom domain for this cookie; if not use default
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domain = (this.domain[name])?this.domain[name]:this.defaultDomain;
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// add to cookie string
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cookies = name + '=' + this.cookies[name] + '; expires=' + expires + '; path=' + path + '; domain=' + domain;
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document.cookie = cookies;
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}
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return true;
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}
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// gets cookie value
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// cookieName = string, cookie name
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Cookiemanager.prototype.getCookie = function(cookieName) {
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var cookie = this.cookies[cookieName]
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return (cookie)?cookie:false;
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}
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// stores cookie value, expiration, domain and path
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// cookieName = string, cookie name
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// cookieValue = string, cookie value
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// expiration = number of units in which the cookie should expire
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// expirationUnits = 'miliseconds' | 'seconds' | 'minutes' | 'hours' | 'days' | 'months' | 'years' (default is 'days')
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// domain = string, domain for cookie
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// path = string, path for cookie
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Cookiemanager.prototype.setCookie = function(cookieName,cookieValue,expiration,expirationUnits,domain,path) {
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this.cookies[cookieName] = cookieValue;
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// set the expiration if it was supplied
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if (expiration) this.expiration[cookieName] = this.getExpiration(expiration,expirationUnits);
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// set path if it was supplied
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if (domain) this.domain[cookieName] = domain;
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if (path) this.path[cookieName] = path;
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return true;
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}
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var cookieManager = new Cookiemanager('cookieManager',1,'days');
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