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/home/develito/www/components/com_abook/helpers/html/categoryparent.php-

<?php
/**
 * @package     Joomla.Platform
 * @subpackage  HTML
 *
 * @copyright   Copyright (C) 2005 - 2011 Open Source Matters, Inc. All rights reserved.
 * @license     GNU General Public License version 2 or later; see LICENSE
 */

defined('JPATH_PLATFORM') or die;

/**
 * Utility class for categories
 *
 * @package     Joomla.Platform
 * @subpackage  HTML
 * @since       11.1
 */
//tendina delle categorie nella vista della ricerca del frontend
abstract class JHtmlCategoryparent
{
	/**
	 * @var    array  Cached array of the category items.
	 */
	protected static $items = array();

/**
	 * Returns an array of categories for the given extension.
	 *
	 * @param   string  The extension option.
	 * @param   array   An array of configuration options. By default, only published and unpulbished categories are returned.
	 *
	 * @return  array
	 */
	public static function options($extension, $config = array('filter.published' => array(0,1)), $cats=0, $level=0)
	{
		$hash = md5($extension.'.'.serialize($config));
		if (!isset(self::$items[$hash])) {
			$config	= (array) $config;
			$db		= JFactory::getDbo();
			$query	= $db->getQuery(true);

$query->select('a.id, a.title, a.level');
			$query->from('#__abcategories AS a');
			$query->leftjoin('`#__abcategories` AS b ON a.lft > b.lft AND a.rgt < b.rgt');

// Filter on the published state
			if (isset($config['filter.published'])) {
				if (is_numeric($config['filter.published'])) {
					$query->where('a.published = '.(int) $config['filter.published']);
				} else if (is_array($config['filter.published'])) {
					JArrayHelper::toInteger($config['filter.published']);
					$query->where('a.published IN ('.implode(',', $config['filter.published']).')');
				}
			}
			if ($cats>0){
                        	$query->where('b.id ='.$cats);
                	}
			// Filter on the level.
			if ($level!= -1){
                        //	$query->where('a.level <= b.level + '.(int) $level);
                	}
			$query->group('a.id');
			$query->order('a.lft');
			$db->setQuery($query);
			$items = $db->loadObjectList();

// Assemble the list options.
			self::$items[$hash] = array();
			self::$items[$hash][] = JHtml::_('select.option', $cats, JText::_('JLIB_FORM_BUTTON_SELECT'));
			foreach ($items as &$item) {
				$repeat = ( $item->level - 1 >= 0 ) ? $item->level - 1 : 0;
				$item->title = str_repeat('- ', $repeat).$item->title;
				self::$items[$hash][] = JHtml::_('select.option', $item->id, $item->title);
			}
		}

return self::$items[$hash];
	}

/**
	 * Returns an array of categories for the given extension.
	 *
	 * @param   string  The extension option.
	 * @param   array   An array of configuration options. By default, only published and unpulbished categories are returned.
	 *
	 * @return  array
	 */
	public static function categories($extension, $config = array('filter.published' => array(0,1)))
	{
		$hash = md5($extension.'.'.serialize($config));

if (!isset(self::$items[$hash])) {
			$config	= (array) $config;
			$db		= JFactory::getDbo();
			$query	= $db->getQuery(true);

$query->select('a.id, a.title, a.level, a.parent_id');
			$query->from('#__abcategories AS a');
			$query->where('a.parent_id > 0');

// Filter on extension.
			$query->where('a.extension = '.$db->quote($extension));

$query->order('a.lft');

$db->setQuery($query);
			$items = $db->loadObjectList();

// Assemble the list options.
			self::$items[$hash] = array();

foreach ($items as &$item) {
					$repeat = ( $item->level - 1 >= 0 ) ? $item->level - 1 : 0;
					$item->title = str_repeat('- ', $repeat).$item->title;
					self::$items[$hash][] = JHtml::_('select.option', $item->id, $item->title);
				}
				// Special "Add to root" option:
				self::$items[$hash][] = JHtml::_('select.option', '1', JText::_('JLIB_HTML_ADD_TO_ROOT'));
		}

return self::$items[$hash];
	}
}