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API16

JHtmlBehavior/keepalive

From Joomla! Documentation

< API16:JHtmlBehavior
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Contents

Description

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

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Syntax

static keepalive()


Defined in

libraries/joomla/html/html/behavior.php

Importing

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

Source Body

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;
}

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Examples

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