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<?php
/**
 * Form control creating a parent category selectbox for an object derived from icms_ipf_Object
 *
 * @copyright   The ImpressCMS Project http://www.impresscms.org/
 * @license     http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU General Public License (GPL)
 * @category    ICMS
 * @package     ipf
 * @subpackage  form
 * @since       1.1
 * @author      marcan <marcan@impresscms.org>
 * @version     $Id: Parentcategory.php 10833 2010-12-04 21:47:36Z skenow $
 */

defined('ICMS_ROOT_PATH') or die("ImpressCMS root path not defined");

class icms_ipf_form_elements_Parentcategory extends icms_form_elements_Select {
    /**
     * Constructor
     * @param   object    $object   reference to targetobject (@link icms_ipf_Object)
     * @param   string    $key      the form name
     */
    public function __construct($object, $key) {
        $category_title_field = $object->handler->identifierName;

        $addNoParent = isset($object->controls[$key]['addNoParent']) ? $object->controls[$key]['addNoParent'] : true;
        $criteria = new icms_db_criteria_Compo();
        $criteria->setSort("weight, " . $category_title_field);
        $category_handler = icms_getModuleHandler('category', $object->handler->_moduleName);
        $categories = $category_handler->getObjects($criteria);

        $mytree = new icms_ipf_Tree($categories, "category_id", "category_pid");
        parent::__construct($object->vars[$key]['form_caption'], $key, $object->getVar($key, 'e'));

        $ret = array();
        $options = $this->getOptionArray($mytree, $category_title_field, 0, $ret, "");
        if ($addNoParent) {
            $newOptions = array('0' => '----');
            foreach ($options as $k => $v) {
                $newOptions[$k] = $v;
            }
            $options = $newOptions;
        }
        $this->addOptionArray($options);
    }

    /**
     * Get options for a category select with hierarchy (recursive)
     *
     * @param object  $tree         icms_ipf_Tree $tree (@link icms_ipf_Tree)
     * @param string  $fieldName    The fieldname to get the option array for
     * @param int     $key          the key to get the optionarray for
     * @param string  $prefix_curr  the prefix
     * @param array   $ret          passed return array
     *
     * @return array  $ret          the constructed option array
     */
    private function getOptionArray($tree, $fieldName, $key, &$ret, $prefix_curr = "") {
        if ($key > 0) {
            $value = $tree->_tree[$key]['obj']->getVar($tree->_myId);
            $ret[$key] = $prefix_curr . $tree->_tree[$key]['obj']->getVar($fieldName);
            $prefix_curr .= "-";
        }

        if (isset($tree->_tree[$key]['child']) && !empty($tree->_tree[$key]['child'])) {
            foreach ($tree->_tree[$key]['child'] as $childkey) {
                $this->getOptionArray($tree, $fieldName, $childkey, $ret, $prefix_curr);
            }
        }
        return $ret;
    }
}