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<?php
/**
* Storage PluginManager class
*
* @version $Id: element.php 114 2009-03-22 12:41:43Z 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 JFormsEPluginManager{
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;
$className = 'JFormEPlugin'.ucfirst($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);
}
}
function getCategories(){
$this->loadPlugins();
$categories = array();
foreach( $this->loaded_plugins as $e ){
if( !array_key_exists($e->group, $categories)){
$categories[$e->group] = array();
}
$categories[$e->group][$e->name] = $e;
}
return $categories;
}
/**
* Loads the active element plugins "listed in plugins/plugin.list"
*
* @return void
*/
function loadPlugins()
{
//Performance check
if( !empty($this->loaded_plugins)){
return;
}
$path = JFORMS_BACKEND_PATH.DS."plugins".DS."elements".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();
$pluginPath = JFORMS_BACKEND_PATH.DS.'plugins'.DS.'elements'.DS.$name.DS;
$filename = $pluginPath.$name.".xml";
$xml->loadFile($filename);
$root = $xml->document;
$a = $root->attributes();
if( $a['type'] != 'element' ){
unset($xml);
return null;
}
$pluginURI = JURI::base()."components/com_jforms/plugins/elements/$name/";
$plugin = new stdClass();
$plugin->name = $root->name[0]->data();
$plugin->description = $root->description[0]->data();
$plugin->limit = isset($a['limit'])?$a['limit']:0;
$plugin->group = isset($a['group'])?$a['group']:'basic';
$plugin->paramXML = $pluginPath . 'param.xml';
//Read <files>
foreach( $root->files[0]->children() as $child ){
$a = $child->attributes();
$type = $a['type'];
switch( $type ){
case 'jsEntryPoint':
$plugin->js = $pluginURI . $child->data();
break;
case 'phpEntryPoint':
$plugin->php = $pluginPath . $child->data();
break;
case 'icon':
$plugin->button = $pluginURI . $child->data();
break;
default:
break;
}
}
//Read <paramteres>
$plugin->parameters = array();
foreach( $root->parameters[0]->children() as $child ){
$a = $child->attributes();
$parameterName = $a['name'];
$plugin->parameters[$parameterName] = new stdClass();
$plugin->parameters[$parameterName]->name = $parameterName;
$plugin->parameters[$parameterName]->valueType = $a['valuetype'];
if( $a['control'] != 'none' ){
$plugin->parameters[$parameterName]->label = $a['label'];
}
if( array_key_exists('translate',$a) && $a['translate'] == '1' ){
$plugin->parameters[$parameterName]->translate = true;
} else {
$plugin->parameters[$parameterName]->translate = false;
}
$plugin->parameters[$parameterName]->control = $a['control'];
if( $a['control'] == 'list' ){
$plugin->parameters[$parameterName]->options = array();
foreach( $child->children() as $op ){
$o = $op->attributes();
$optionName = $op->data();
$optionValue= $o['value'];
$plugin->parameters[$parameterName]->options[$optionName] = $optionValue;
}
}
$plugin->parameters[$parameterName]->default = $a['default'];
}
//Read <storage>
if( !isset( $root->storage ) ){
$plugin->storage = null;
} else {
$a = $root->storage[0]->attributes();
$plugin->storage = new stdClass();
$plugin->storage->type = $a['type'];
$plugin->storage->size = 0;
if( isset($a['size']))
$plugin->storage->size = $a['size'];
$plugin->storage->requirefs = false;
if( isset( $a['requirefs'] ))
$plugin->storage->requirefs = strtolower($a['requirefs'])=='true'?true:false;
}
//Load language files
$lang =& JFactory::getLanguage();
$lang->load('element.'.ucfirst($name),JFORMS_BACKEND_PATH,null,false);
return $plugin;
}
function getPluginsCategories(){
$this->loadPlugins();
$categories = array();
foreach( $this->loaded_plugins as $e ){
if( !array_key_exists($e->group, $categories)){
$categories[$e->group] = array();
}
$categories[$e->group][$e->name] = $e;
}
return $categories;
}
/**
* Reads the "plugins.list" file and returns an array containing the names of element plugions
*
* @return array : Element plugins to be loaded
*/
function _getPlugins()
{
$b = file_get_contents(JFORMS_BACKEND_PATH.DS."plugins".DS."elements".DS."plugins.list");
$plugins = explode( "\r\n", $b );
for($i=0;$i<count($plugins);$i++){
$plugins[$i] = trim($plugins[$i]);
}
return $plugins;
}
}