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<?php
/**
* Export PluginManager class
*
* @version $Id: export.php 124 2009-04-04 21:37:00Z dr_drsh $
* @package Joomla
* @subpackage JForms
* @copyright Copyright (C) 2008 Mostafa Muhammad. All rights reserved.
* @license GNU/GPL
*/
defined('_JEXEC') or die('Restricted access');
class JFormsXPluginManager{
var $loaded_plugins = array();
function invokeMethod( $name, $which, $params ){
//Error checking
if( $which == null || count( $which ) != 1 )return null;
$response = array();
foreach( $this->loaded_plugins as $p ){
if( !is_null( $which ) && !in_array( $p->name, $which ) )continue;
require_once $p->php;
$className = 'JFormXPlugin'.ucfirst($p->name);
//PHP 4 fix
$methodExists = false;
eval( '$x = new '.$className.'();$methodExists = method_exists($x,"'.$name.'");$x=null;' );
//End of PHP 4 Fix
if( !$methodExists )return '';
return call_user_func_array(array($className,$name),$params);
}
}
/**
* Loads the active element plugins "listed in plugins/plugin.list"
*
* @return void
*/
function loadPlugins()
{
//Performance check
if( !empty($this->loaded_plugins)){
return;
}
$path = JFORMS_BACKEND_PATH.DS."plugins".DS."export".DS;
$plugins = $this->_getPlugins();
foreach($plugins as $plugin){
$p = $this->_loadPlugin( $plugin );
if($p != null){
$this->loaded_plugins[$plugin] = $p;
}
}
}
/**
* Loads a single Element plugin from XML file
*
* @return object : an object that holds information that was loaded from the XML file
*/
function _loadPlugin( $name )
{
$xml = new JSimpleXML();
$pluginPath = JFORMS_BACKEND_PATH.DS.'plugins'.DS.'export'.DS.$name.DS;
$filename = $pluginPath.$name.".xml";
$xml->loadFile($filename);
$root = $xml->document;
$a = $root->attributes();
if( $a['type'] != 'export' ){
unset($xml);
return null;
}
$pluginURI = JURI::base()."components/com_jforms/plugins/export/$name/";
$plugin = new stdClass();
$plugin->name = $root->name[0]->data();
$plugin->description = $root->description[0]->data();
$plugin->format = $root->format[0]->data();
$plugin->php = $pluginPath . $name . '.php';
$plugin->paramXML = $pluginPath . 'param.xml';
//Load language files
$lang =& JFactory::getLanguage();
$lang->load('export.'.ucfirst($name),JFORMS_BACKEND_PATH,null,false);
return $plugin;
}
/**
* Reads the "plugins.list" file and returns an array containing the names of element plugions
*
* @return array : Element plugins to be loaded
*/
function _getPlugins()
{
$plugins = file(JFORMS_BACKEND_PATH.DS."plugins".DS."export".DS."plugins.list" );
for($i=0;$i<count($plugins);$i++){
$plugins[$i] = trim($plugins[$i]);
}
return $plugins;
}
}