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   1  <?php
   2  /**
   3  * @version        $Id: loadmodule.php 14401 2010-01-26 14:10:00Z louis $
   4  * @package        Joomla
   5  * @copyright    Copyright (C) 2005 - 2010 Open Source Matters. All rights reserved.
   6  * @license        GNU/GPL, see LICENSE.php
   7  * Joomla! is free software. This version may have been modified pursuant
   8  * to the GNU General Public License, and as distributed it includes or
   9  * is derivative of works licensed under the GNU General Public License or
  10  * other free or open source software licenses.
  11  * See COPYRIGHT.php for copyright notices and details.
  12  */
  13  
  14  // no direct access
  15  defined( '_JEXEC' ) or die( 'Restricted access' );
  16  
  17  $mainframe->registerEvent( 'onPrepareContent', 'plgContentLoadModule' );
  18  
  19  /**
  20  * Plugin that loads module positions within content
  21  */
  22  function plgContentLoadModule( &$row, &$params, $page=0 )
  23  {
  24      $db =& JFactory::getDBO();
  25      // simple performance check to determine whether bot should process further
  26      if ( JString::strpos( $row->text, 'loadposition' ) === false ) {
  27          return true;
  28      }
  29  
  30      // Get plugin info
  31      $plugin =& JPluginHelper::getPlugin('content', 'loadmodule');
  32  
  33       // expression to search for
  34       $regex = '/{loadposition\s*.*?}/i';
  35  
  36       $pluginParams = new JParameter( $plugin->params );
  37  
  38      // check whether plugin has been unpublished
  39      if ( !$pluginParams->get( 'enabled', 1 ) ) {
  40          $row->text = preg_replace( $regex, '', $row->text );
  41          return true;
  42      }
  43  
  44       // find all instances of plugin and put in $matches
  45      preg_match_all( $regex, $row->text, $matches );
  46  
  47      // Number of plugins
  48       $count = count( $matches[0] );
  49  
  50       // plugin only processes if there are any instances of the plugin in the text
  51       if ( $count ) {
  52          // Get plugin parameters
  53           $style    = $pluginParams->def( 'style', -2 );
  54  
  55           plgContentProcessPositions( $row, $matches, $count, $regex, $style );
  56      }
  57  }
  58  
  59  function plgContentProcessPositions ( &$row, &$matches, $count, $regex, $style )
  60  {
  61       for ( $i=0; $i < $count; $i++ )
  62      {
  63           $load = str_replace( 'loadposition', '', $matches[0][$i] );
  64           $load = str_replace( '{', '', $load );
  65           $load = str_replace( '}', '', $load );
  66           $load = trim( $load );
  67  
  68          $modules    = plgContentLoadPosition( $load, $style );
  69          $row->text     = str_replace($matches[0][$i], $modules, $row->text );
  70       }
  71  
  72        // removes tags without matching module positions
  73      $row->text = preg_replace( $regex, '', $row->text );
  74  }
  75  
  76  function plgContentLoadPosition( $position, $style=-2 )
  77  {
  78      $document    = &JFactory::getDocument();
  79      $renderer    = $document->loadRenderer('module');
  80      $params        = array('style'=>$style);
  81  
  82      $contents = '';
  83      foreach (JModuleHelper::getModules($position) as $mod)  {
  84          $contents .= $renderer->render($mod, $params);
  85      }
  86      return $contents;
  87  }