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<?php
/**
 * @version     $Id: johanjanssens $
 * @category	Nooku
 * @package     Nooku_Components
 * @subpackage  Default
 * @copyright   Copyright (C) 2007 - 2011 Johan Janssens. All rights reserved.
 * @license     GNU GPLv3 <http://www.gnu.org/licenses/gpl.html>
 * @link        http://www.nooku.org
 */

/**
 * Module Filter
 * 
 * Filter to dynamically populate a module position from data rendered through your template.
 * 
 * Filter will parse elements of the form <module position="[position]">[content]</module> 
 * and prepend or append the content to the module position.
.*
 * @author      Johan Janssens <johan@nooku.org>
 * @category    Nooku
 * @package     Nooku_Components
 * @subpackage  Default
 */
class ComDefaultTemplateFilterModule extends KTemplateFilterAbstract implements KTemplateFilterWrite
{  
    public function write(&$text)
    {   
	$matches = array();
		
	if(preg_match_all('#<module([^>]*)>(.*)</module>#siU', $text, $matches)) 
	{	
	    foreach($matches[0] as $key => $match)
	    {
	        //Remove placeholder
	        $text = str_replace($match, '', $text);
			    
		//Create attributes array
		$attributes = array(
		    'style' 	=> 'component',
		    'params'	=> '',	
		    'title'     => '',
		    'class'	=> '',
		    'prepend'   => true
		);
				
	        $attributes = array_merge($attributes, JUtility::parseAttributes($matches[1][$key])); 
				
		//Create module object
	        $module      = new KObject();
	        $module->id  = 0;
		$module->content   = $matches[2][$key];
		$module->position  = $attributes['position'];
		$module->params    = $attributes['params'];
		$module->showtitle = !empty($attributes['title']);
		$module->title     = $attributes['title'];
		$module->attribs   = $attributes;
		$module->user      = 0;
		$module->module    = 'mod_dynamic';
				
	        KFactory::get('lib.joomla.document')->modules[$attributes['position']][] = $module;
            }
	}
		
	return $this;
    }    
}

/**
 * Modules Renderer
 * 
 * This is a specialised modules renderer which prepends or appends the dynamically created modules 
 * to the list of modules before rendering them.
.*
 * @author      Johan Janssens <johan@nooku.org>
 * @category    Nooku
 * @package     Nooku_Components
 * @subpackage  Default
 */
class JDocumentRendererModules extends JDocumentRenderer
{
    public function render( $position, $params = array(), $content = null )
    {
	//Get the modules
	$modules = JModuleHelper::getModules($position);
		
	if(isset($this->_doc->modules[$position])) 
	{
	    foreach($this->_doc->modules[$position] as $module) 
	    { 
	        if($module->attribs['prepend']) {
	            array_push($modules, $module);   
	        } else {
	            array_unshift($modules, $module);
	        }
	    }
	}
		
	//Render the modules
	$renderer = $this->_doc->loadRenderer('module');
		
	$contents = '';
	foreach ($modules as $module)  {
		$contents .= $renderer->render($module, $params, $content);
	}
		
	return $contents;
    }
}