class.ilShopGUI.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

include_once 'Services/Payment/classes/class.ilShopBaseGUI.php';
include_once 'Services/Payment/classes/class.ilPaymentSettings.php';
include_once 'Services/Form/classes/class.ilPropertyFormGUI.php';
include_once  './Services/Payment/classes/class.ilShopRepositoryExplorer.php';

include_once './Services/Payment/classes/class.ilShopSearchResult.php';

class ilShopGUI extends ilShopBaseGUI
{
        const SHOP_PAGE_EDITOR_PAGE_ID = 99999999;

        private $sort_type_topics = '';
        private $sort_direction_topics = '';
        private $sort_field = '';
        private $sort_direction = '';
        private $string = '';
        private $type = '';
        private $topic_id = 0;

        public $settings = null;

        public $cur_ref_id = null;

        protected $ilShopSearchResult = null;

        public function __construct()
        {
                parent::__construct();

                global $ilCtrl;

                if(isset($_POST['cmd']) && $_POST['cmd'] == 'setFilter')
                {
                        $this->cmd        = 'setFilter';
                }
                else
                {
                        $this->cmd        = $ilCtrl->getCmd();  
                }
                        
                $this->cur_ref_id = (int)$_GET['ref_id'];
                $this->settings = ilPaymentSettings::_getInstance();
                
                $this->ilShopSearchResult = ilShopSearchResult::_getInstance(SHOP_CONTENT);
        
                // set filter settings
                $this->setType($_SESSION['shop_content']['type']);
                $this->setString($_SESSION['shop_content']['text']);
                $this->setTopicId($_POST['filter_topic_id']);

                // set sorting
                $this->setSortingTypeTopics($_SESSION['shop_content']['order_topics_sorting_type']);
                $this->setSortingDirectionTopics($_SESSION['shop_content']['shop_topics_sorting_direction']);
                $this->setSortField($_POST['order_field']);
                $this->setSortDirection($_SESSION['shop_content']['shop_order_direction']);
        }

        function executeCommand()
        {
                $next_class = $this->ctrl->getNextClass($this);
                if(isset($_GET['ref_id']))
                {
                        $this->cmd = 'showTree';
                }
                
                switch($next_class)
                {
                        case 'ilshoppagegui':
                                $this->prepareOutput();

                                $ret = $this->forwardToPageObject();
                                if($ret != '')
                                {
                                        $this->tpl->setContent($ret);
                                }
                                break;

                        default:
                                switch($this->cmd)
                                {
                                        case 'firstpage':
                                                $this->clearFilter();

                                                if($this->settings->get('use_shop_specials') == true)
                                                {
                                                        //@todo ... continue
                                                        $this->ilShopSearchResult->setFilterMode(ilShopSearchResult::SHOW_SPECIAL_CONTENT);
                                                        
                                                        $cmd = 'showSpecialContent';
                                                }
                                                else
                                                {
                                                        $cmd = 'performSearch';
                                                }
                                                break;
                                        case 'showTree':
                                                $obj_type  = ilObject::_lookupType(ilObject::_lookupObjId($this->cur_ref_id));
                                                $container = array("root", "cat", 'catr', "grp", "crs", 'crsr', 'rcrs');

                                                if(in_array($obj_type, $container))
                                                {
                                                        //@todo ... continue
                                                        $this->ilShopSearchResult->setFilterMode(ilShopSearchResult::SHOW_CONTAINER_CONTENT);
                                                        $cmd = 'showContainerContent';
                                                }
                                                else
                                                {
                                                        $cmd = 'performSearch';
                                                }
                                                break;
                                        case 'resetFilter':
                                                $cmd = 'resetFilter';
                                                break;
                                        case 'setFilter':
                                                $cmd = 'setFilter';
                                                break;
                                        default:
                                                $cmd = 'performSearch';
                                                break;
                                }

                                $this->prepareOutput();
                                $this->$cmd();
                                break;
                }

                return true;
        }

        
        public function showFilters()
        {
                $show_general_filter = $this->settings->get('show_general_filter');
                $show_topics_filter  = $this->settings->get('show_topics_filter');
                $topics_enabled          = $this->settings->get('enable_topics'); 
                $show_shop_explorer  = $this->settings->get('show_shop_explorer');

                if($show_general_filter)
                {
                        $g_filter_html = $this->showGeneralFilter();
                        $this->tpl->setCurrentBlock('show_general_filter');
                        $this->tpl->setVariable('FORM', $g_filter_html);
                        $this->tpl->parseCurrentBlock();
                }
                
                if($show_topics_filter && $topics_enabled)
                {
                        $this->showTopicsFilter();
                }
                if($show_shop_explorer)
                {
                        $this->showShopExplorer();
                }
        }
        
        
        public function clearFilter()
        {
                $this->setString('');
                $this->setType('');
                $this->setTopicId(0);

                #return $this->performSearch();
        }

        public function getPageHTML()
        {
                // page object
                include_once 'Services/Payment/classes/class.ilShopPage.php';
                include_once 'Services/Payment/classes/class.ilShopPageGUI.php';

                // if page does not exist, return nothing
                if(!ilShopPage::_exists('shop', self::SHOP_PAGE_EDITOR_PAGE_ID))
                {
                        return '';
                }

                include_once 'Services/Style/classes/class.ilObjStyleSheet.php';
                $this->tpl->setVariable('LOCATION_CONTENT_STYLESHEET', ilObjStyleSheet::getContentStylePath(0));

                // get page object
                $page_gui = new ilShopPageGUI(self::SHOP_PAGE_EDITOR_PAGE_ID);

                return $page_gui->showPage();
        }

        public function forwardToPageObject()
        {
                global $lng, $ilTabs;

                $ilTabs->clearTargets();
                $ilTabs->setBackTarget($lng->txt('back'), $this->ctrl->getLinkTarget($this), '_top');

                // page object
                include_once 'Services/Payment/classes/class.ilShopPage.php';
                include_once 'Services/Payment/classes/class.ilShopPageGUI.php';

                $lng->loadLanguageModule('content');

                include_once('./Services/Style/classes/class.ilObjStyleSheet.php');
                $this->tpl->setVariable('LOCATION_CONTENT_STYLESHEET', ilObjStyleSheet::getContentStylePath(0));

                if(!ilShopPage::_exists('shop', self::SHOP_PAGE_EDITOR_PAGE_ID))
                {
                        // doesn't exist -> create new one
                        $new_page_object = new ilShopPage();
                        $new_page_object->setParentId(0);
                        $new_page_object->setId(self::SHOP_PAGE_EDITOR_PAGE_ID);
                        $new_page_object->createFromXML();
                }

                $this->ctrl->setReturnByClass('ilshoppagegui', 'edit');

                $page_gui = new ilShopPageGUI(self::SHOP_PAGE_EDITOR_PAGE_ID);

                return $this->ctrl->forwardCommand($page_gui);
        }

        public function setFilter()
        {
                $_SESSION['content_filter']['updateView']      = $_POST['updateView'];
                $_SESSION['content_filter']['show_filter']     = $_POST['show_filter'];
                $_SESSION['content_filter']['sel_filter_type'] = $_POST['sel_filter_type'];
                $_SESSION['content_filter']['filter_text']     = $_POST['filter_text'];
                $_SESSION['content_filter']['filter_topic_id'] = $_POST['filter_topic_id'];

                $_SESSION['content_filter']['order_field']     = $_POST['order_field'];
                $_SESSION['content_filter']['order_direction'] = $_POST['order_direction'];

                $_SESSION['content_filter']['topics_sorting_type']      = $_POST['topics_sorting_type'];
                $_SESSION['content_filter']['topics_sorting_direction'] = $_POST['topics_sorting_direction'];

                $this->setString($_POST['filter_text']);
                $this->setType($_POST['sel_filter_type']);
                $this->setTopicId($_POST['filter_topic_id']);

                $this->setSortingTypeTopics($_POST['topics_sorting_type']);
                $this->setSortingDirectionTopics($_POST['topics_sorting_direction']);
                $this->setSortField($_POST['order_field']);
                $this->setSortDirection('asc');

                $this->performSearch();
                return;
        }

        public function showShopExplorer()
        {
                global $ilCtrl, $tree, $lng, $tpl;

                $ilCtrl->setParameter($this, "active_node", $_GET["active_node"]);
                $tpl->addCss('Services/Payment/css/shop_explorer.css');

                include_once ("./Services/Payment/classes/class.ilShopRepositoryExplorer.php");

                $active_node = ($_GET["active_node"] >= 1)
                        ? $_GET["active_node"]
                        : ($_GET["ref_id"] >= 1)
                                ? $_GET["ref_id"]
                                : 0;

                $top_node = 0;

                $exp = new ilShopRepositoryExplorer("ilias.php", $top_node);
                $exp->setUseStandardFrame(false);
                $exp->setExpandTarget("ilias.php?baseClass=ilshopcontroller&ref_id=1&cmd=showTree");

                $exp->setFrameUpdater("tree", "updater");
                $exp->setTargetGet("ref_id");

                if($_GET["repexpand"] == "")
                {
                        $expanded = $tree->readRootId();
                }
                else
                {
                        $expanded = $_GET["repexpand"];
                }

                $exp->setExpand($expanded);

                if($active_node > 0)
                {
                        $path = $tree->getPathId($active_node);
                        if($top_node > 0)
                        {
                                $exp->setForceOpenPath($path);
                                $exp->setExpand($expanded);
                        }
                        else
                        {
                                $exp->setForceOpenPath($path + array($top_node));
                        }
                        $exp->highlightNode($active_node);
                }

                // build html-output
                if($top_node > 0)
                {
                        $head_tpl = new ilTemplate("tpl.cont_tree_head.html", true, true,
                                "Services/Repository");
                        $path     = ilObject::_getIcon(ROOT_FOLDER_ID, "tiny", "root");
                        $nd       = $tree->getNodeData(ROOT_FOLDER_ID);
                        $title    = $nd["title"];
                        if($title == "ILIAS")
                        {
                                $title = $lng->txt("repository");
                        }
                        $head_tpl->setVariable("IMG_SRC", $path);
                        $head_tpl->setVariable("ALT_IMG", $lng->txt("icon") . " " . $title);
                        $head_tpl->setVariable("LINK_TXT", $title);
                        $head_tpl->setVariable("LINK_HREF", "ilias.php?baseClass=ilshopcontroller&ref_id=1");
                        $exp->setTreeLead($head_tpl->get());

                        $exp->initItemCounter(1);
                        $exp->setOutput($tree->getParentId($top_node), 1,
                                ilObject::_lookupObjId($tree->getParentId($top_node)));
                }
                else
                {
                        $exp->setOutput(0);
                }
                $output = $exp->getOutput(true);

                // asynchronous output
                if($ilCtrl->isAsynch())
                {
                        echo $output;
                        exit;
                }
                
                $ilCtrl->setParameter($this, "repexpand", $_GET["repexpand"]);
                $tpl->setLeftContent($output);
        }

        public function performSearch($oResult = null)
        {
                if(!is_object($oResult))
                {
                        $oResult = ilShopSearchResult::_getInstance(SHOP_CONTENT);
                        if((bool)$this->settings->get('topics_allow_custom_sorting'))
                        {
                                ilShopTopics::_getInstance()->setIdFilter((int)$this->getTopicId());
                                ilShopTopics::_getInstance()->enableCustomSorting(true);
                                ilShopTopics::_getInstance()->setSortingType((int)$this->getSortingTypeTopics());
                                ilShopTopics::_getInstance()->setSortingDirection(strtoupper($this->getSortingDirectionTopics()));
                                ilShopTopics::_getInstance()->read();
                        }
                        else
                        {
                                ilShopTopics::_getInstance()->setIdFilter((int)$this->getTopicId());
                                ilShopTopics::_getInstance()->enableCustomSorting(false);
                                ilShopTopics::_getInstance()->setSortingType((int)$this->settings->get('topics_sorting_type'));
                                ilShopTopics::_getInstance()->setSortingDirection(strtoupper($this->settings->get('topics_sorting_direction')));
                                ilShopTopics::_getInstance()->read();
                        }

                        $topics = ilShopTopics::_getInstance()->getTopics();

                        $oResult->setTopics($topics);
                        $oResult->setResultPageNumber((int)$_GET['page_number']);
                }

                // query parser
                include_once 'Services/Search/classes/class.ilQueryParser.php';
                $query_parser = new ilQueryParser(ilUtil::stripSlashes($this->getString()));
                $query_parser->setMinWordLength(0);
                $query_parser->setCombination(QP_COMBINATION_AND);
                $query_parser->parse();
                if(!$query_parser->validate())
                {
                        ilUtil::sendInfo($query_parser->getMessage());
                }

                // search
                $types = array('crs', 'lm', 'sahs', 'htlm', 'file', 'tst', 'exc', 'glo');
                if($this->getType() == '' || $this->getType() == 'title' ||
                        $query_parser->getQueryString() == ''
                )
                {
                        include_once 'Services/Search/classes/class.ilObjectSearchFactory.php';
                        $object_search = ilObjectSearchFactory::_getShopObjectSearchInstance($query_parser);
                        $object_search->setFields(array('title'));
                        $object_search->setFilter($types);
                        $object_search->setCustomSearchResultObject($oResult);
                        $object_search->setFilterShopTopicId((int)$this->getTopicId());
                        $res = $object_search->performSearch();
                }
                else if($this->getType() == 'author')
                {
                        include_once 'Services/Search/classes/class.ilObjectSearchFactory.php';
                        $meta_search = ilObjectSearchFactory::_getShopMetaDataSearchInstance($query_parser);
                        $meta_search->setMode('contribute');
                        $meta_search->setFilter($types);
                        $meta_search->setFilterShopTopicId((int)$this->getTopicId());
                        $meta_search->setCustomSearchResultObject($oResult);
                        $res = $meta_search->performSearch();
                }
                else
                {
                        include_once 'Services/Search/classes/class.ilObjectSearchFactory.php';
                        $meta_search = ilObjectSearchFactory::_getShopMetaDataSearchInstance($query_parser);
                        $meta_search->setMode('title');
                        $meta_search->setFilter($types);
                        $meta_search->setCustomSearchResultObject($oResult);
                        $meta_search->setFilterShopTopicId((int)$this->getTopicId());
                        $res = $meta_search->performSearch();

                        $meta_search = ilObjectSearchFactory::_getShopMetaDataSearchInstance($query_parser);
                        $meta_search->setMode('keyword');
                        $meta_search->setFilter($types);
                        $meta_search->setCustomSearchResultObject($oResult);
                        $meta_search->setFilterShopTopicId((int)$this->getTopicId());
                        $res->mergeEntries($meta_search->performSearch());
                }

                $res->filter(ROOT_FOLDER_ID, true);
                $res->save();

                if(!count($res->getResults()))
                {
                        ilUtil::sendInfo($this->lng->txt('payment_shop_not_objects_found'));
                }
                        
                $this->showTopicsContent($res);
                $this->addPager($res);
                return;
        }

        public function resetFilter()
        {
                unset($_SESSION['content_filter']);
                unset($_POST['sel_filter_type']);
                unset($_POST['filter_text']);
                unset($_POST['filter_topic_id']);
                unset($_POST['order_field']);
                unset($_POST['order_direction']);
                unset($_POST['topics_sorting_type']);
                unset($_POST['topics_sorting_direction']);
                unset($_POST['updateView']);
                unset($_POST['show_filter']);

                ilUtil::sendInfo($this->lng->txt('paya_filter_reseted'));
                $this->setString('');
                $this->setType('');
                $this->setTopicId(0);

                $this->performSearch();
                return;
        }

        //showSpecialContent
        public function showSpecialContent()
        {
                global $ilUser, $rbacreview, $ilToolbar;

                if($rbacreview->isAssigned($ilUser->getId(), SYSTEM_ROLE_ID))
                {
                        $ilToolbar->addButton($this->lng->txt('edit_page'), $this->ctrl->getLinkTargetByClass(array('ilshoppagegui'), 'edit'));
                }

                $this->tpl->addBlockFile('ADM_CONTENT', 'adm_content', 'tpl.shop_content.html', 'Services/Payment');
                $this->tpl->setVariable('PAGE_CONTENT', $this->getPageHTML());

                include_once './Services/Payment/classes/class.ilPaymentObject.php';

                $pobjects = ilPaymentObject::_getSpecialObjects();
                if(count($pobjects))
                {
                        foreach($pobjects as $result)
                        {
                                $obj_id      = ilObject::_lookupObjId($result['ref_id']);
                                $title       = ilObject::_lookupTitle($obj_id);
                                $description = ilObject::_lookupDescription($obj_id);
                                $type        = ilObject::_lookupType($obj_id);

                                $presentation_results[(int)$result['pt_topic_fk']][$type][] =
                                        array(
                                                'ref_id'      => $result['ref_id'],
                                                'title'       => $title,
                                                'description' => $description,
                                                'type'        => $type,
                                                'obj_id'      => $obj_id,
                                                'topic_id'    => (int)$result['pt_topic_fk'],
                                                'child'       => $result['child']
                                        );
                        }
                        $this->tpl->setVariable('PAGE_CONTENT', $this->getPageHTML());
                }
                else
                {
                        $this->tpl->setVariable('PAGE_CONTENT', $this->lng->txt('please_choose_category'));
                }

                include_once 'Services/Payment/classes/class.ilShopResultPresentationGUI.php';
                $search_result_presentation = new ilShopResultPresentationGUI($presentation_results);
                $search_result_presentation->setSortField(strtolower(trim($this->getSortField())));
                $search_result_presentation->setSortDirection(trim($this->getSortDirection()));

                $html = $search_result_presentation->showSpecials();

                $this->tpl->setVariable('RESULTS', $html);
                $this->showFilters();
        }

        public function showTopicsContent($oResult)
        {
                global $ilUser, $rbacreview, $ilToolbar;

                if($rbacreview->isAssigned($ilUser->getId(), SYSTEM_ROLE_ID))
                {
                        $ilToolbar->addButton($this->lng->txt('edit_page'), $this->ctrl->getLinkTargetByClass(array('ilshoppagegui'), 'edit'));
                }

                $this->tpl->addBlockFile('ADM_CONTENT', 'adm_content', 'tpl.shop_content.html', 'Services/Payment');
                if(!count($oResult->getResults()))
                {
                        $this->tpl->setVariable('ERROR',ilUtil::sendInfo($this->lng->txt('payment_shop_not_objects_found')));
                }

                include_once './Services/Payment/classes/class.ilPaymentObject.php';
                $filter_topics_id = NULL;
                if($_SESSION['content_filter']['filter_topic_id'] != NULL)
                {
                        $filter_topics_id = (int)$_SESSION['content_filter']['filter_topic_id'];
                        $pobjects = ilPaymentObject::_getTopicsObjects($filter_topics_id);
                        if(count($pobjects))
                        {
                                foreach($pobjects as $result)
                                {
                                        $obj_id      = ilObject::_lookupObjId($result['ref_id']);
                                        $title       = ilObject::_lookupTitle($obj_id);
                                        $description = ilObject::_lookupDescription($obj_id);
                                        $type        = ilObject::_lookupType($obj_id);

                                        $presentation_results[(int)$result['pt_topic_fk']][$type][] = array(
                                                'ref_id' => $result['ref_id'], 'title' => $title, 'description' => $description, 'type' => $type, 'obj_id' => $obj_id, 'topic_id' => (int)$result['pt_topic_fk'], 'child' => $result['child']
                                        );
                                }
                                $this->tpl->setVariable('PAGE_CONTENT', $this->getPageHTML());
                        }
                        else
                        {
                                $this->tpl->setVariable('PAGE_CONTENT', $this->lng->txt('please_choose_category'));
                        }

                        include_once 'Services/Payment/classes/class.ilShopResultPresentationGUI.php';
                        $search_result_presentation = new ilShopResultPresentationGUI($presentation_results);
                        $search_result_presentation->setSortField(strtolower(trim($this->getSortField())));
                        $search_result_presentation->setSortDirection(trim($this->getSortDirection()));

                        $html = $search_result_presentation->showTopics();
                }
                else
                {
                        foreach($oResult->getResults() as $result)
                        {

                                $obj_id      = ilObject::_lookupObjId($result['ref_id']);
                                $title       = ilObject::_lookupTitle($obj_id);
                                $description = ilObject::_lookupDescription($obj_id);
                                $tmp_res = array('ref_id' => $result['ref_id'], 'title' => $title, 'description' => $description, 
                                                                 'type' => $result['type'], 'obj_id' => $obj_id, 'topic_id' => 0, 'child' => 0);
                        
                                $presentation_results[0][$result['type']][] = $tmp_res;
                        }       
                        
                        include_once 'Services/Payment/classes/class.ilShopResultPresentationGUI.php';
                        $search_result_presentation = new ilShopResultPresentationGUI($presentation_results);
                        $search_result_presentation->setSortField(strtolower(trim($this->getSortField())));
                        $search_result_presentation->setSortDirection(trim($this->getSortDirection()));

                        $html = $search_result_presentation->showTopics();
                }
                $this->tpl->setVariable('RESULTS', $html);
                $this->showFilters();
        }

        /*
         * show buyable "sub"-objects of containers  (cat, catr, crs, grp, ...)
         */
        public function showContainerContent()
        {
                global $ilUser, $rbacreview, $ilToolbar, $tpl;

                if($rbacreview->isAssigned($ilUser->getId(), SYSTEM_ROLE_ID))
                {
                        $ilToolbar->addButton($this->lng->txt('edit_page'), $this->ctrl->getLinkTargetByClass(array('ilshoppagegui'), 'edit'));
                }

                include_once './Services/Payment/classes/class.ilPaymentObject.php';

                $this->tpl->addBlockFile('ADM_CONTENT', 'adm_content', 'tpl.shop_content.html', 'Services/Payment');
                $this->tpl->setVariable('PAGE_CONTENT', $this->getPageHTML());

                $is_buyable = ilPaymentObject::_isBuyable($this->cur_ref_id);

                if($is_buyable)
                {
                        $pobjects = ilPaymentObject::_getObjectData(ilPaymentObject::_lookupPobjectId($this->cur_ref_id));

                        $obj_id      = ilObject::_lookupObjId($this->cur_ref_id);
                        $title       = ilObject::_lookupTitle($obj_id);
                        $description = ilObject::_lookupDescription($obj_id);
                        $type        = ilObject::_lookupType($obj_id);

                        $presentation_results[$pobjects['pt_topic_fk']][$type][] =
                                array(
                                        'ref_id'      => $pobjects['ref_id'],
                                        'title'       => $title,
                                        'description' => $description,
                                        'type'        => $type,
                                        'obj_id'      => $obj_id,
                                        'topic_id'    => $pobjects['pt_topic_fk'],
                                        'child'       => $pobjects['child']
                                );
                }
                else
                {
                        $pobjects = ilPaymentObject::_getContainerObjects($this->cur_ref_id);

                        if(count($pobjects) >= 1)
                        {
                                foreach($pobjects as $result)
                                {
                                        $obj_id      = $result['obj_id'];
                                        $title       = $result['title'];
                                        $description = $result['description'];
                                        $type        = $result['type'];

                                        $presentation_results[$result['pt_topic_fk']][$type][] =
                                                array(
                                                        'ref_id'      => $result['ref_id'],
                                                        'title'       => $title,
                                                        'description' => $description,
                                                        'type'        => $type,
                                                        'obj_id'      => $obj_id,
                                                        'topic_id'    => $result['pt_topic_fk'],
                                                        'child'       => $result['child']
                                                );
                                }
                        }
                }

                include_once 'Services/Payment/classes/class.ilShopResultPresentationGUI.php';
                $search_result_presentation = new ilShopResultPresentationGUI($presentation_results);
                $search_result_presentation->setSortField(strtolower(trim($this->getSortField())));
                $search_result_presentation->setSortDirection(trim($this->getSortDirection()));

                if(!$presentation_results)
                {
                        $this->tpl->setVariable('RESULTS', $this->lng->txt('payment_shop_not_objects_found'));
                }
                else
                {       
                        $html = $search_result_presentation->showSpecials();
                        $this->tpl->setVariable('RESULTS', $html);
                }
                $this->showFilters();
        }

        public function showGeneralFilter($a_count_result = 0)
        {
                include_once 'Services/Payment/classes/class.ilShopFilterGUI.php';
                $filterGUI = new ilShopFilterGUI($this, 'setCmd');
                $filterGUI->initFilter();
                if($this->cmd == 'setFilter')
                {
                        $filterGUI->writeFilterToSession();
                }
                else
                {
                        $filterGUI->resetFilter();
                }
                return $filterGUI->getHtml();
        }

        public function showTopicsFilter($a_count_result = 0)
        {
                global $ilUser;

                $this->tpl->setCurrentBlock('show_topics_filter');

                ilShopTopics::_getInstance()->setIdFilter(false);
                ilShopTopics::_getInstance()->read();

                if(count(ilShopTopics::_getInstance()->getTopics()))
                {
                        $this->tpl->setVariable('PAGE_CONTENT', $this->getPageHTML());
                        $this->tpl->setVariable('SORTING_FORM_ACTION', $this->ctrl->getFormAction($this, 'setFilter'));

                        $this->tpl->setVariable('SET_FILTER_VAL', $this->lng->txt('pay_update_view'));

                        $this->tpl->setCurrentBlock('topics_option');
                        $this->tpl->setVariable('SORT_TOPICS', $this->lng->txt('topic'));

                        $this->tpl->setVariable('FILTER_TOPIC_ID', 'no_selection');
                        $this->tpl->setVariable('FILTER_TOPIC_TEXT', '------------');
                        if($_POST['cmd'] == 'firstpage')
                                $this->tpl->setVariable('FILTER_TOPIC_SELECTED', 'selected');
                        $this->tpl->parseCurrentBlock('topics_option');

                        $this->tpl->setVariable('FILTER_TOPIC_ID', 'all');
                        $this->tpl->setVariable('FILTER_TOPIC_TEXT', $this->lng->txt('all'));
                        if($_POST['filter_topic_id'] == 'all')
                                $this->tpl->setVariable('FILTER_TOPIC_SELECTED', 'selected');
                        $this->tpl->parseCurrentBlock('topics_option');

                        $oTopics = array();
                        $oTopics = ilShopTopics::_getInstance()->getTopics();
                        foreach($oTopics as $oTopic)
                        {
                                $this->tpl->setVariable('FILTER_TOPIC_ID', $oTopic->getId());
                                $this->tpl->setVariable('FILTER_TOPIC_TEXT', $oTopic->getTitle());
                                if($_POST['filter_topic_id'] == $oTopic->getId())
                                        $this->tpl->setVariable('FILTER_TOPIC_SELECTED', 'selected');
                                $this->tpl->parseCurrentBlock('topics_option');
                        }
                }

                if($a_count_result)
                {
                        $objects = (bool)$this->settings->get('objects_allow_custom_sorting');
                        if($objects)
                        {
                                // sorting form
                                $allow_objects_option = array(
                                        'title'  => $this->lng->txt('title'),
                                        'author' => $this->lng->txt('author'),
                                        'price'  => $this->lng->txt('price_a')
                                );
                                $this->tpl->setCurrentBlock('order_field');
                                $this->tpl->setVariable('SORT_BY_TEXT', $this->lng->txt('sort_by'));

                                foreach($allow_objects_option as $key=> $value)
                                {
                                        $this->tpl->setVariable('ORDER_FIELD_VALUE', $key);
                                        $this->tpl->setVariable('ORDER_FIELD_TEXT', $value);
                                        if($_POST['order_field'] == $key)
                                                $this->tpl->setVariable('ORDER_FIELD_SELECTED', 'selected');
                                        $this->tpl->parseCurrentBlock('order_field');
                                }
                        }

                        $topics = (bool)$this->settings->get('topics_allow_custom_sorting');

                        if($topics)
                        {
                                // sorting form
                                $allow_topics_option = array(
                                        ilShopTopics::TOPICS_SORT_BY_TITLE      => $this->lng->txt('sort_topics_by_title'),
                                        ilShopTopics::TOPICS_SORT_BY_CREATEDATE => $this->lng->txt('sort_topics_by_date')
                                );
                                if(ANONYMOUS_USER_ID != $ilUser->getId())
                                {
                                        $allow_topics_option[ilShopTopics::TOPICS_SORT_MANUALLY] = $this->lng->txt('sort_topics_manually');
                                }
                        }
                }
        }

        public function setTopicId($a_topic_id)
        {
                $this->topic_id = $a_topic_id;
        }

        public function getTopicId()
        {
                return $this->topic_id;
        }

        public function setString($a_str)
        {
                $this->string = $a_str;
        }

        public function getString()
        {
                return $this->string;
        }

        public function setType($a_type)
        {
                $this->type = $a_type;
        }

        public function getType()
        {
                return $this->type;
        }

        public function setSortDirection($a_sort_direction)
        {
                $this->sort_direction = $a_sort_direction;
        }

        public function getSortDirection()
        {
                return $this->sort_direction;
        }

        public function setSortField($a_field)
        {
                $this->sort_field = $a_field;
        }

        public function getSortField()
        {
                return $this->sort_field;
        }

        public function setSortingTypeTopics($a_field)
        {
                global $ilUser;

                if(ANONYMOUS_USER_ID == $ilUser->getId() &&
                        $a_field == ilShopTopics::TOPICS_SORT_MANUALLY
                )
                {
                        $a_field = ilShopTopics::TOPICS_SORT_BY_TITLE;
                }

                $this->sort_type_topics = $a_field;
        }

        public function getSortingTypeTopics()
        {
                global $ilUser;

                if(ANONYMOUS_USER_ID == $ilUser->getId() &&
                        $this->sort_type_topics == ilShopTopics::TOPICS_SORT_MANUALLY
                )
                {
                        $this->sort_type_topics = ilShopTopics::TOPICS_SORT_BY_TITLE;
                }

                return $this->sort_type_topics;
        }

        public function setSortingDirectionTopics($a_sort_direction)
        {
                $_SESSION['shop_content']['shop_topics_sorting_direction'] = $this->sort_direction_topics = $a_sort_direction;
        }

        public function getSortingDirectionTopics()
        {
                return $this->sort_direction_topics;
        }

        protected function prepareOutput()
        {
                global $ilTabs;

                parent::prepareOutput();
                $ilTabs->setTabActive('content');
        }
}