<?php
/**
 * patTemplate-function for ediatable XML content
 *
 * $Id$
 *
 * @package Wombat
 * @subpackage patTemplate
 * @author gERD Schaufelberger <gerd@php-tools.net>
 */


/**
 * patTemplate-function for ediatable XML content
 *
 * User XML markup handler to transform to HTML.
 * Also users may edit content. After that, the new content will be stored
 * in database.
 *
 * @version 0.3.0
 * @package Wombat
 * @subpackage patTemplate
 */
class patTemplate_Function_Wxml extends patTemplate_Function
{
    /**
     * name of the function
     * @access private
     * @var string
     */
    public $_name  =   'Wxml';

    /**
     * tell that this function has to be executed during runtime
     * @var string
     */
    public $_type = PATTEMPLATE_FUNCTION_RUNTIME;

    /**
     * call the function
     *
     * @access public
     * @param array $params parameters of the function (= attributes of the tag)
     * @param string $content inside tag
     * @return string content to insert into the template
     */
    public function call($params, $content)
    {
        // content must be XML like
        $content    =   trim($content);
        if (empty($content)) {
            return '';
        }

        // prepare attributes
        $params =   array_merge(array(
                        'class'                 =>  '',
                        'requiredgroup'         =>  '',
                        'requirededitorgroup'   =>  '',
                        'cs'                    =>  ''
                ), $params);

        // don't show content if user is not in requiredgroup
        if (!empty($params['requiredgroup'])) {
            WBClass::load('WBUser');
            $user   =   WBUser::getCurrent();
            if (!$user->isInGroup($params['requiredgroup'])) {
                return '';
            }
        }

        // find url
        WBClass::load('WBString');
        if (isset($params['path']) && !empty($params['path'])) {
            $url    =   WBString::replaceSuperPlaceholders('[[SELF]][[PATH]]', $params['path']);
        } else {
            $req    =   WBClass::create('WBRequest');
            $url    =   WBString::replaceSuperPlaceholders('[[SELF]][[PATH]]', $req->path);
        }

        $wxml   =   WBClass::create('WBMarkup_Wxml');
        if (empty($params['cs'])) {
            $cs     =   md5($content);
        } else {
            $cs =   $params['cs'];
        }
        $wxml->load($cs, $content);
        $wxml->setEditorGroup($params['requirededitorgroup']);
        $wxml->setClassname($params['class']);
        $wxml->setUrl($url);
        return $wxml->getHtml();
    }
}