<?php
/**
* @version		$Id: advlink.php 46 2009-05-26 16:59:42Z happynoodleboy $
* @package      JCE
* @copyright    Copyright (C) 2005 - 2009 Ryan Demmer. All rights reserved.
* @author		Ryan Demmer
* @license      GNU/GPL
* JCE is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
*/
// no direct access
defined('_JEXEC') or die('Restricted access');
// Set flag that this is an extension parent
DEFINE('_JCE_EXT', 1);

// Load class dependencies
require_once(JCE_LIBRARIES .DS. 'classes' .DS. 'plugin.php');

class AdvLink extends JContentEditorPlugin 
{
	/*
	*  @var varchar
	*/
	var $_linkextensions = array();
	/**
	* Constructor activating the default information of the class
	*
	* @access	protected
	*/
	function __construct()
	{
		parent::__construct();
		
		// check the user/group has editor permissions
		$this->checkPlugin() or die(JError::raiseError(403, JText::_('Access Forbidden')));
				
		// Setup XHR callback functions 
		$this->setXHR(array($this, 'getLinks'));

		$this->script(array(
			'tree'
		), 'libraries');
		$this->script(array('advlink'), 'plugins');
		// Set css file array
		$this->css(array('plugin', 'tree'), 'libraries');
		$this->css(array('advlink'), 'plugins');
		$this->loadLanguages();
		
		$extensions = $this->loadExtensions('links');
		
		foreach ($extensions as $extension) {
			if ($extension) {
				if (is_array($extension)) {
					foreach ($extension as $sibling) {
						$this->_linkextensions[] = $sibling;
					}
				} else {
					$this->_linkextensions[] = $extension;
				}
			}
		}
	}
	/**
	 * Returns a reference to a plugin object
	 *
	 * This method must be invoked as:
	 * 		<pre>  $advlink = &AdvLink::getInstance();</pre>
	 *
	 * @access	public
	 * @return	JCE  The editor object.
	 * @since	1.5
	 */
	function &getInstance()
	{
		static $instance;

		if (!is_object($instance)) {
			$instance = new AdvLink();
		}
		return $instance;
	}
	function getLists()
	{
		$advlink =& AdvLink::getInstance();
		
		$list = '<ul class="root">';
		foreach ($advlink->_linkextensions as $extension) {						
			// Path specified, assume extra files			
			if ($extension['path']) {
				include_once($extension['path'] .DS. $extension['file']);
			}
			$class = 'Advlink' . ucfirst($extension['name']);
			if (is_callable(array($class, 'getOptions'))) {
				$list .= call_user_func(array($class, 'getOptions'));	
			} else {
				// No class file specified, use function instead.
				$list .= call_user_func($extension['name'] . 'getOptions');
			}
		}
		$list .= '</ul>';
		return $list;
	}
	function getLinks($args)
	{
		$advlink =& AdvLink::getInstance();
		
		$items = array();
		
		foreach ($advlink->_linkextensions as $extension) {
			// Check the prefix of the request
			$option = str_replace('com_', '', $args->option);			
			if ($option == $extension['name']) {
				// Path specified, assume extra files
				if ($extension['path']) {
					include_once($extension['path'] .DS. $extension['file']);
				}
				$class = 'Advlink' . ucfirst($extension['name']);
				if (is_callable(array($class, 'getItems'))) {
					$items = call_user_func(array($class, 'getItems'), $args);
				} else {
					// No class file specified, use function instead.
					$items = call_user_func($extension['name'] . 'getItems', $args);
				}
			}
		}
		
		$array 	= array();
		$result = array();
		
		if (!empty($items)) {
			foreach ($items as $item) {
				$array[] = array(
					'id'		=>	isset($item['id']) ? $advlink->xmlEncode($item['id']) : '',
					'url'		=>	isset($item['url']) ? $advlink->xmlEncode($item['url']) : '',
					'name'		=>	$advlink->xmlEncode($item['name']),
					'class'		=>	$item['class']
				);
			}
			$result[] = array(
				'folders'	=>	$array
			);
		}
		
		return $result;
	}
	/**
	 * Category function used by many extensions
	 *
	 * @access	public
	 * @return	Category list object.
	 * @since	1.5
	 */
	function getCategory($section)
	{
		$db			=& JFactory::getDBO();
		$user		=& JFactory::getUser();
		$advlink 	=& AdvLink::getInstance();

		$query = 'SELECT id AS slug, id AS id, title, alias';
		if ($advlink->getPluginParam('advlink_category_alias', '1') == '1') {
			$query .= ', CASE WHEN CHAR_LENGTH(alias) THEN CONCAT_WS(":", id, alias) ELSE id END as slug';
		}
		$query .= ' FROM #__categories'
		. ' WHERE section = '. $db->Quote($section)
		. ' AND published = 1'
		. ' AND access <= '.(int) $user->get('aid')
		. ' ORDER BY title'
		;
		$db->setQuery($query);
		
		return $db->loadObjectList();		
	}
	/**
	 * (Attempt to) Get an Itemid
	 *
	 * @access	public
	 * @return	Category list object.
	 * @since	1.5
	 */
	function getItemId($component, $needles = array())
	{		
		$match = null;
		
		require_once(JPATH_SITE.DS.'includes'.DS.'application.php');
		
		$component 	=& JComponentHelper::getComponent($component);
		$menu 		=& JSite::getMenu();
		$items 		= $menu->getItems('componentid', $component->id);
		
		if ($items) {
			foreach ($needles as $needle => $id) {
				foreach ($items as $item) {
					if ((@$item->query['view'] == $needle) && (@$item->query['id'] == $id)) {
						$match = $item->id;
						break;
					}
				}
				if (isset($match)) {
					break;
				}
			}
		}
		return $match ? '&Itemid='.$match : '';
	}
}