API15:JHTMLBehavior/keepalive

Description

Keep session alive, for example, while editing or creating an article.

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Syntax

keepalive()

Defined in

libraries/joomla/html/html/behavior.php

Importing

jimport( 'joomla.html.html.behavior' );

Source Body

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;
}

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