/**
* Keep session alive, for example, while editing or creating an article.
*/
public static function keepalive()
{
// Include mootools framework
JHtmlBehavior::mootools();
$config =& JFactory::getConfig();
$lifetime = $config->getValue('lifetime') * 60000;
$refreshTime = $lifetime <= 60000 ? 30000 : $lifetime - 60000;
//refresh time is 1 minute less than the liftime assined in the configuration.php file
$document =& JFactory::getDocument();
$script = '';
$script .= 'function keepAlive() {';
$script .= ' var myAjax = new Ajax("index.php", { method: "get" }).request();';
$script .= '}';
$script .= ' window.addEvent("domready", function()';
$script .= '{ keepAlive.periodical(' . $refreshTime . '); }';
$script .= ');';
$document->addScriptDeclaration($script);
return;
}
