101 lines
2.9 KiB
JavaScript
101 lines
2.9 KiB
JavaScript
/**
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* Copyright 2009 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS-IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var padcookie = (function(){
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function getRawCookie() {
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// returns null if can't get cookie text
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if (! document.cookie) {
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return null;
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}
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// look for (start of string OR semicolon) followed by whitespace followed by prefs=(something);
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var regexResult = document.cookie.match(/(?:^|;)\s*prefs=([^;]*)(?:;|$)/);
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if ((! regexResult) || (! regexResult[1])) {
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return null;
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}
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return regexResult[1];
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}
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function setRawCookie(safeText) {
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var expiresDate = new Date();
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expiresDate.setFullYear(3000);
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document.cookie = ('prefs='+safeText+';expires='+expiresDate.toGMTString());
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}
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function parseCookie(text) {
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// returns null if can't parse cookie.
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try {
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var cookieData = JSON.parse(unescape(text));
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return cookieData;
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}
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catch (e) {
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return null;
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}
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}
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function stringifyCookie(data) {
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return escape(JSON.stringify(data));
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}
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function saveCookie() {
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if (! inited) {
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return;
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}
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setRawCookie(stringifyCookie(cookieData));
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if (pad.getIsProPad() && (! getRawCookie()) && (! alreadyWarnedAboutNoCookies)) {
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alert("Warning: it appears that your browser does not have cookies enabled."+
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" EtherPad uses cookies to keep track of unique users for the purpose"+
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" of putting a quota on the number of active users. Using EtherPad without "+
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" cookies may fill up your server's user quota faster than expected.");
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alreadyWarnedAboutNoCookies = true;
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}
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}
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var wasNoCookie = true;
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var cookieData = {};
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var alreadyWarnedAboutNoCookies = false;
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var inited = false;
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var self = {
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init: function(prefsToSet) {
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var rawCookie = getRawCookie();
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if (rawCookie) {
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var cookieObj = parseCookie(rawCookie);
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if (cookieObj) {
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wasNoCookie = false; // there was a cookie
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delete cookieObj.userId;
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delete cookieObj.name;
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delete cookieObj.colorId;
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cookieData = cookieObj;
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}
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}
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for(var k in prefsToSet) {
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cookieData[k] = prefsToSet[k];
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}
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inited = true;
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saveCookie();
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},
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wasNoCookie: function() { return wasNoCookie; },
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getPref: function(prefName) {
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return cookieData[prefName];
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},
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setPref: function(prefName, value) {
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cookieData[prefName] = value;
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saveCookie();
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}
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};
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return self;
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}()); |