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