/**
* Keep session alive, for example, while editing or creating an article.
*/
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;
}
/**
* Method to load the system keepalive behavior. This will send an ascynchronous request to the
* server via AJAX on an interval just under the session expiration lifetime so that the session
* does not expire.
*
* @return void
*
* @since 1.5.19
* @static
*/
function keepalive()
{
// Load the behavior framework into the document head.
JHTMLBehavior::mootools();
// Get the session lifetime in microseconds.
$lifetime = JFactory::getConfig()->getValue('lifetime', 900) * 60000;
// Set the session refresh period to one minute less than the session lifetime.
$refreshTime = (int) ($lifetime <= 60000) ? 30000 : $lifetime - 60000;
// Build the keepalive script.
$script = array('function keepAlive() { new Ajax("index.php", {method: "get"}).request(); }', 'window.addEvent("domready", function() { keepAlive.periodical(' . $refreshTime . '); });');
// Load the keepalive script into the document head.
JFactory::getDocument()->addScriptDeclaration(implode("\n", $script));
}
