function __construct($parent_tmp, $steamObject_tmp, $xml)
 {
     $this->parent = $parent_tmp;
     $this->steamObject = $steamObject_tmp;
     $this->xml = $xml;
     $this->cache = get_cache_function("unit_elearning", 3600);
 }

 public function get_headline()
 {
     $cache = get_cache_function($this->koala_group->get_id());
     $headline = array();
     $group_url = PATH_URL . "groups/" . $this->koala_group->get_id() . "/";
     if (($category = $this->koala_group->get_steam_object()->get_environment()) && $cache->call("lms_steam::group_is_public", $this->koala_group->get_id())) {
         $headline[] = array("name" => h($category->get_name()), "link" => PATH_URL . "groups/?cat=" . $category->get_id());
         $headline[] = array("name" => $this->koala_group->get_display_name(), "link" => $group_url);
     } else {
         $headline[] = array("name" => h($this->koala_group->get_name()));
     }
     if (is_string($context = $this->get_context())) {
         switch ($context) {
             case "documents":
                 //TODO: move this into documents extension somehow?
                 $headline[] = array("name" => gettext("Documents"), "link" => "");
                 break;
             case "communication":
                 $headline[] = array("name" => gettext("Communication"), "link" => "");
                 break;
             case "members":
                 $headline[] = array("name" => gettext("Members"), "link" => "");
                 break;
         }
         // try extensions:
         foreach ($this->koala_group->get_extensions() as $extension) {
             $tmp_headline = $extension->get_headline($headline, $this->get_context(), $this->get_context_params());
             if (is_array($tmp_headline)) {
                 return $tmp_headline;
             }
         }
     }
     return $headline;
 }

 /**
  * function get_merged items:
  * this function returns the rss_feed items from multiple url's sorted by
  * Date/Time (latest first)
  * 
  * @param array $urls array with the url's of the rss_feeds
  * 
  * @return array the array with the rss-feed items sorted by Date/Time (latest first)
  */
 public function get_merged_items($feeds = array())
 {
     if (!is_array($feeds)) {
         return array();
     }
     $all_items = array();
     foreach ($feeds as $feed) {
         $cache = get_cache_function("rss", 600);
         $items = $cache->call("lms_rss::get_items", $feed["link"]);
         for ($j = 0; $j < count($items); $j++) {
             $items[$j]["lms:type"] = $feed["type"];
             $items[$j]["lms:source"] = $feed["name"];
             $items[$j]["lms:rsslink"] = $feed["link"];
             $items[$j]["lms:context_name"] = $feed["context_name"];
             $items[$j]["lms:context_link"] = $feed["context_link"];
             array_push($all_items, $items[$j]);
         }
     }
     function compare($a, $b)
     {
         return strtotime($a["dc:date"]) < strtotime($b["dc:date"]) ? 1 : -1;
     }
     usort($all_items, "compare");
     return $all_items;
 }

 function remove_role()
 {
     $course_group_id = $this->get_context()->get_context_object();
     $course_group = steam_factory::get_object($GLOBALS["STEAM"]->get_id(), $course_group_id);
     $course_group_staff = steam_factory::get_group($GLOBALS["STEAM"]->get_id(), $course_group->get_groupname() . ".staff");
     $GLOBALS["USERMANAGEMENT_DATA_ACCESS"]->removeUserFromGroup($this->get_userID(), $course_group_staff->get_id());
     $cache = get_cache_function($course_group_staff->get_id());
     $cache->drop("lms_steam::group_get_members", $course_group_staff->get_id());
 }

 function __construct($parent_tmp, $steamObject_tmp)
 {
     $this->parent = $parent_tmp;
     $this->steamObject = $steamObject_tmp;
     //get meta data
     $this->cache = get_cache_function("unit_elearning", 3600);
     $this->steam_object_path = $this->cache->call(array($this->steamObject, "get_path"));
     $doc = $this->cache->call("steam_factory::get_object_by_name", $GLOBALS["STEAM"]->get_id(), $this->steam_object_path . "/chapter.xml");
     $this->xml = simplexml_load_string($this->cache->call(array($doc, "get_content")));
 }

 function __construct($steam_object = FALSE)
 {
     self::$PATH = PATH_EXTENSIONS . "units_elearning/";
     self::$DISPLAY_NAME = gettext("elearning course material");
     self::$DISPLAY_DESCRIPTION = gettext("Here you can add elearning material");
     parent::__construct(PATH_EXTENSIONS . "units_elearning.xml", $steam_object);
     if (!defined("PATH_TEMPLATES_UNITS_ELEARNING")) {
         define("PATH_TEMPLATES_UNITS_ELEARNING", PATH_EXTENSIONS . "units_elearning/templates/");
     }
     $this->cache = get_cache_function("unit_elearning", 3600);
 }

 public function frameResponse(\FrameResponseObject $frameResponseObject)
 {
     $path = $this->params;
     $portal = \lms_portal::get_instance();
     $user = \lms_steam::get_current_user();
     if (!\lms_steam::is_steam_admin($user)) {
         //TODO: REDIRECT!!
     }
     if ($_SERVER["REQUEST_METHOD"] == "POST") {
         $values = $_POST["values"];
         $start_date = iso_to_unix($values["start"]);
         $end_date = iso_to_unix($values["end"]);
         // TODO PROBLEM CHECKING MISSING
         $courses = \steam_factory::get_object($GLOBALS["STEAM"]->get_id(), STEAM_COURSES_GROUP, CLASS_GROUP);
         $all_user = \steam_factory::groupname_to_object($GLOBALS["STEAM"]->get_id(), STEAM_ALL_USER);
         $new_semester = \steam_factory::create_group($GLOBALS["STEAM"]->get_id(), $values["name"], $courses, FALSE, $values["desc"]);
         $new_semester_admins = \steam_factory::create_group($GLOBALS["STEAM"]->get_id(), "admins", $new_semester, FALSE, "admin group for " . $values["desc"]);
         $new_semester_admins->set_attribute("OBJ_TYPE", "semester_admins");
         $new_semester_admins->add_member($user);
         $new_semester->set_insert_access($new_semester_admins, TRUE);
         $new_semester->set_read_access($all_user, TRUE);
         $new_semester->set_attributes(array("SEMESTER_START_DATE" => $start_date, "SEMESTER_END_DATE" => $end_date));
         // CACHE ZURÜCKSETZEN
         $cache = get_cache_function("ORGANIZATION");
         $cache->drop("lms_steam::get_semesters");
         header("Location: " . PATH_URL . "semester/index/" . $values["name"] . "/all");
     }
     $content = \Semester::getInstance()->loadTemplate("semester_create.template.html");
     $content->setVariable("INFO_TEXT", gettext("So, you want to start a new semester?") . " " . gettext("Please fill out the requested values on the right.") . "<br/><br/>" . str_replace("%SEMESTER", STEAM_CURRENT_SEMESTER, gettext("And don't forget to reset the current semester in the etc/koala.def.php, which is <b>%SEMESTER</b> at the moment.")));
     $content->setVariable("LABEL_NAME", gettext("Shortname"));
     $content->setVariable("INFO_NAME", gettext("IMPORTANT: Don't use any slashes, commas or dots in this name. Keep it short, like 'WS0607' or 'SS06'."));
     $content->setVariable("LABEL_DESC", gettext("Name"));
     $content->setVariable("INFO_DESC", gettext("Examples: 'Wintersemester 06/07', or 'Sommersemester 2006'"));
     $content->setVariable("LABEL_START_DATE", gettext("Starting date of semester"));
     $content->setVariable("LABEL_END_DATE", gettext("Ending date of semester"));
     $content->setVariable("INFO_DATE_FORMAT", gettext("Please type in the date in the following format: YYYY-MM-DD"));
     $content->setVariable("LABEL_CREATE", gettext("Create Semester"));
     /* TODO: Portal anpassen
     		$portal->set_page_main(
     			array(array("link" => PATH_URL.SEMESTER_URL."/", "name" => gettext("Semester")), array("link" => "", "name" => gettext("Create new"))),
     			$content->get(),
     			""
     		);
     		*/
     $rawHtml = new \Widgets\RawHtml();
     $rawHtml->setHtml($content->get());
     $frameResponseObject->addWidget($rawHtml);
     return $frameResponseObject;
 }

 public function group_get_members($pGroup)
 {
     if (!$pGroup instanceof koala_group) {
         throw new Exception("parameter is not an instance of koala_group", E_PARAM);
     }
     if (!$pGroup->is_admin(lms_steam::get_current_user())) {
         throw new Exception("no admin rights.operation canceled.");
     }
     $cache = get_cache_function($pGroup->get_id(), CACHE_LIFETIME_STATIC);
     switch (get_class($pGroup)) {
         case "koala_group_course":
             $group_name = $pGroup->get_course_id() . " - " . $pGroup;
             $members = $cache->call("lms_steam::group_get_members", $pGroup->steam_group_learners->get_id());
             break;
         default:
             $members = $cache->call("lms_steam::group_get_members", $pGroup->get_id());
             break;
     }
     // INITIALIZATION
     $course_id = $pLmsGroupCourse->get_course_id();
     $course_name = $pLmsGroupCourse->get_course_dsc_short();
     $semester = $pLmsGroupCourse->get_semester();
     $excel = new Spreadsheet_Excel_Writer();
     $excel->send($course_id . "_" . $semester->get_name());
     $sheet =& $excel->addWorksheet(gettext("participants"));
     // WRITE EXCEL SHEET
     $sheet->writeString(0, 0, $course_id . " - " . $course_name());
     $sheet->writeSting(1, 0, $semester->get_name());
     $sheet->writeString(3, 0, gettext("student id"));
     $sheet->writeString(3, 1, gettext("forename"));
     $sheet->writeString(3, 2, gettext("surname"));
     $no_members = count($members);
     if ($no_members > 0) {
         $row = 5;
         for ($i = $start; $i < $end; $i++) {
             $member = $members[$i];
             $sheet->writeString($row, 1, $member["USER_FIRSTNAME"]);
             $sheet->writeString($row, 2, $member["USER_FULLNAME"]);
             $sheet->writeString($row, 3, $member["USER_EMAIL"]);
             $sheet->writeString($row, 4, $member["USER_PROFILE_FACULTY"]);
             $row++;
         }
     }
     $excel->close();
 }

function clean_usericoncache($user)
{
    if ($user instanceof steam_user) {
        $user->delete_value("OBJ_ICON");
        $icon = $user->get_attribute("OBJ_ICON");
        clean_iconcache($icon);
        // Clean Icon data from cache
        require_once "Cache/Lite.php";
        $cache = new Cache_Lite(array("cacheDir" => PATH_CACHE));
        $cache->clean($user->get_name());
        // Clean profile data from cache
        $cache = get_cache_function($user->get_name(), 86400);
        $cache->drop("lms_steam::user_get_profile", $user->get_name());
        // TODO: In Menu "Your Desktop" some Icon data comes from lms_user
        // stored in session => delete/refresh this value in session here
        $portal = $GLOBALS["portal"];
        $steam_user = $portal->get_user();
        $steam_user->init_attributes();
    }
}

function viewer_authorized($login, $user)
{
    $cache = get_cache_function($user->get_name(), 3600);
    $user_privacy = $cache->call("lms_steam::user_get_profile_privacy", $user->get_name());
    isset($user_privacy["PRIVACY_GROUPS"]) ? $group_authorization = $user_privacy["PRIVACY_GROUPS"] : ($group_authorization = "");
    $confirmed = $user->get_id() != $login->get_id() ? TRUE : FALSE;
    $contacts = $cache->call("lms_steam::user_get_buddies", $user->get_name(), $confirmed);
    $contact_ids = array();
    foreach ($contacts as $contact) {
        $contact_ids[] = $contact["OBJ_ID"];
    }
    $is_contact = in_array($login->get_id(), $contact_ids);
    if (!($group_authorization & PROFILE_DENY_ALLUSERS)) {
        return true;
    }
    if ($is_contact && !($group_authorization & PROFILE_DENY_CONTACTS)) {
        return true;
    }
    return false;
}

 public function frameResponse(\FrameResponseObject $frameResponseObject)
 {
     $portal = \lms_portal::get_instance();
     $user = \lms_steam::get_current_user();
     $frameResponseObject->setTitle(gettext("Your Desktop"));
     // Cache for 7 Minutes
     $cache = get_cache_function($user->get_name(), 420);
     $feeds = $cache->call("koala_user::get_news_feeds_static", 0, 10, FALSE, $user);
     $home = \Home::getInstance();
     //$home->addJS();
     $content = $home->loadTemplate("home.template.html");
     $infobar = new \Widgets\InfoBar();
     $infobar->setHeadline(gettext("Hallo") . " " . $portal->get_user()->get_forename() . " " . $portal->get_user()->get_surname() . "!");
     $content->setVariable("INFOBAR", $infobar->getHtml());
     $captionImage = new \Widgets\CaptionImage();
     $captionImage->setLink(PATH_URL . "user/index/" . $user->get_name() . "/");
     $captionImage->setLinkText(gettext("To your profile"));
     $captionImage->setImageSrc(\lms_user::get_user_image_url(140, 185));
     $captionImage->setImageAlt(gettext("Profile Image"));
     $captionImage->setImageTitle(gettext("Complete your Profile"));
     $content->setVariable("PROFILEIMAGE", $captionImage->getHtml());
     $rawHtml = new \Widgets\RawHtml();
     $rawHtml->addWidget($infobar);
     $rawHtml->addWidget($captionImage);
     $homeExtensions = \ExtensionMaster::getInstance()->getExtensionByType("IHomeExtension");
     foreach ($homeExtensions as $homeExtension) {
         $content->setCurrentBlock("HOME_EXTENSION");
         $widget = $homeExtension->getWidget();
         $rawHtml->addWidget($widget);
         $content->setVariable("HOME_EXTENSION_CONTENT", $widget->getHtml());
         $content->parse("HOME_EXTENSION");
     }
     $rawHtml->setHtml($content->get());
     $frameResponseObject->addWidget($rawHtml);
     return $frameResponseObject;
 }

                lms_steam::delete($object);
            } catch (Exception $ex3) {
                logging::write_log(LOG_DEBUGLOG, "groups_delete:error deleting object from group workroom\t" . $login . " \t" . $group->get_display_name() . " \t" . $steam_group->get_id() . " \t" . $object->get_id());
            }
        }
    }
    if ($steam_group->delete()) {
        $user->get_attributes(array(OBJ_NAME, USER_FIRSTNAME, USER_FULLNAME));
        foreach ($members as $member) {
            $cache = get_cache_function($member->get_name());
            $cache->drop("lms_steam::user_get_groups", $member->get_name(), TRUE);
            $cache->drop("lms_steam::user_get_groups", $member->get_name(), FALSE);
            $cache->drop("lms_steam::user_get_profile", $member->get_name());
            $cache->drop("lms_portal::get_menu_html", $member->get_name(), TRUE);
        }
        $cache = get_cache_function($steam_group->get_id());
        $cache->drop("lms_steam::group_get_members", $steam_group->get_id());
        foreach ($members as $member) {
            lms_steam::mail($member, $user, PLATFORM_NAME . ": " . str_replace("%NAME", h($group_name), gettext("Group %NAME has been deleted.")), str_replace("%USER", $user->get_name() . " (" . $user->get_attribute(USER_FIRSTNAME) . " " . $user->get_attribute(USER_FULLNAME) . ")", str_replace("%NAME", h($group_name), gettext("The group '%NAME' has been deleted from he koaLA System by %USER."))) . "\n\n-- \n" . str_replace("%NAME", h($group_name), gettext("This system generated notification message was sent to you as a former member of the deleted group \"%NAME\"")));
        }
        $_SESSION["confirmation"] = str_replace("%NAME", h($group_name), gettext("The group '%NAME' has been deleted. A notification has been sent to former members."));
        header("Location: " . $upper_link);
        exit;
    } else {
        throw new Exception("Deletion of group failed");
    }
}
$content = new HTML_TEMPLATE_IT();
$content->loadTemplateFile(PATH_TEMPLATES . "group_delete.template.html");
$content->setVariable("FORM_ACTION", "");
$content->setVariable("LABEL_ARE_YOU_SURE", gettext("Are you sure?"));

 public function execute(\FrameResponseObject $frameResponseObject)
 {
     $user = \lms_steam::get_current_user();
     $cache = get_cache_function($user->get_name(), 86400);
     $user_profile = $cache->call("lms_steam::user_get_profile", $user->get_name());
     if ($_SERVER["REQUEST_METHOD"] == "POST") {
         $values = $_POST["values"];
         foreach ($values as $i => $val) {
             $values[$i] = htmlspecialchars($val);
         }
         if (!empty($values["USER_PROFILE_WEBSITE_URI"]) && substr($values["USER_PROFILE_WEBSITE_URI"], 0, 7) != "http://") {
             $values["USER_PROFILE_WEBSITE_URI"] = "http://" . $values["USER_PROFILE_WEBSITE_URI"];
         }
         $user->set_attributes($values);
         if (!empty($values["USER_PROFILE_FACULTY"])) {
             $old_fac_id = $user_profile["USER_PROFILE_FACULTY"];
             $new_fac_id = $values["USER_PROFILE_FACULTY"];
             if ($new_fac_id != $old_fac_id) {
                 if ($old_fac_id > 0) {
                     $old_faculty = \steam_factory::get_object($GLOBALS["STEAM"]->get_id(), $old_fac_id, CLASS_GROUP);
                     $old_faculty->remove_member($user);
                 }
                 if ($new_fac_id > 0) {
                     $new_faculty = \steam_factory::get_object($GLOBALS["STEAM"]->get_id(), $new_fac_id, CLASS_GROUP);
                     $new_faculty->add_member($user);
                 }
             }
         }
         /*
         			 require_once( "Cache/Lite.php" );
         			 $cache = new Cache_Lite( array( "cacheDir" => PATH_CACHE ) );
         			 $cache->clean( $user->get_name() );
         			 $cache->clean( $user->get_id() );*/
         if (!empty($values["USER_LANGUAGE"])) {
             //var_dump($values["USER_LANGUAGE"]);die;
             $lang_index = \language_support::get_language_index();
             \language_support::choose_language($lang_index[$values["USER_LANGUAGE"]]);
         }
         $cache = get_cache_function(\lms_steam::get_current_user()->get_name());
         $cache->drop("lms_portal::get_menu_html", \lms_steam::get_current_user()->get_name(), TRUE);
         $cache = get_cache_function($user->get_name());
         $cache->drop("lms_steam::user_get_profile", $user->get_name());
         $_SESSION["confirmation"] = gettext("Your profile data has been saved.");
         header("Location: " . PATH_URL . "profile/edit");
     }
     $content = \Profile::getInstance()->loadTemplate("profile_edit.template.html");
     //$content = new \HTML_TEMPLATE_IT();
     //$content->loadTemplateFile( PATH_TEMPLATES . "profile_edit.template.html" );
     if (PLATFORM_ID == "bid") {
         $content->setVariable("LABEL_INFO", "Hier können Sie Ihre persönlichen Kontaktdaten einrichten. Bis auf Ihren Namen sind alle Angaben freiwillig und können von Ihnen geändert werden. Klicken Sie auf den Button <b><i>Profil-Privatsphäre</i></b> um festzulegen, wem welche Informationen angezeigt werden sollen.");
     } else {
         $content->setVariable("LABEL_INFO", gettext("Please complete your profile. None of the fields are mandatory. Some of the fields can not be changed due to central identity management at the IMT.<br/><b>Note: With the button <i>Profile Privacy</i> you can control which information can be seen by other users.</b>"));
     }
     if (ENABLED_PROFILE_TITLE) {
         $content->setVariable("LABEL_PROFILE", gettext("General Information"));
     }
     $content->setVariable("LABEL_LOOKING", gettext("Your buddy icon"));
     $content->setVariable("LABEL_MAIL_PREFS", gettext("Your mail preferences"));
     $content->setVariable("LABEL_PROFILE_PRIVACY", gettext("Profile Privacy"));
     $content->setVariable("LINK_BUDDY_ICON", PATH_URL . "profile/image");
     $content->setVariable("LINK_MAIL_PREFS", PATH_URL . "messages_prefs.php");
     $content->setVariable("LINK_PROFILE_PRIVACY", PATH_URL . "profile/privacy");
     if (ENABLED_FIRST_NAME) {
         $content->setVariable("LABEL_FIRST_NAME", gettext("First name"));
     }
     if (ENABLED_FULL_NAME) {
         $content->setVariable("LABEL_LAST_NAME", gettext("Last name"));
     }
     if (ENABLED_DEGREE) {
         $content->setVariable("LABEL_TITLE", gettext("Academic title"));
         $content->setVariable("LABEL_DEGREE", gettext("Academic degree"));
         $content->setVariable("LABEL_IF_AVAILABLE", gettext("only if available"));
         $academicTitle = (string) $user_profile["USER_ACADEMIC_TITLE"];
         switch ($academicTitle) {
             case "Dr.":
                 $content->setVariable("TITLE_DR_SELECTED", 'selected="selected"');
                 break;
             case "PD Dr.":
                 $content->setVariable("TITLE_PRIVDOZDR_SELECTED", 'selected="selected"');
                 break;
             case "Prof.":
                 $content->setVariable("TITLE_PROF_SELECTED", 'selected="selected"');
                 break;
             case "Prof. Dr.":
                 $content->setVariable("TITLE_PROFDR_SELECTED", 'selected="selected"');
                 break;
             default:
                 $content->setVariable("TITLE_NULL_SELECTED", 'selected="selected"');
                 break;
         }
         $content->setVariable("VALUE_ACADEMIC_DEGREE", $this->safe_string($user_profile["USER_ACADEMIC_DEGREE"]));
     }
     if (ENABLED_BID_DESCIPTION) {
         $content->setVariable("LABEL_STATUS_BID", gettext("Description"));
     }
     if (ENABLED_STATUS) {
         $content->setVariable("LABEL_STATUS", gettext("Status"));
     }
     if (ENABLED_GENDER) {
         $content->setVariable("LABEL_GENDER", gettext("Gender"));
//.........这里部分代码省略.........

 public function frameResponse(\FrameResponseObject $frameResponseObject)
 {
     $forum_id = $this->params[0];
     $portal = \lms_portal::get_instance();
     $user = \lms_steam::get_current_user();
     $rss_feeds = $user->get_attribute("USER_RSS_FEEDS");
     $author_id = isset($this->params[1]) ? $this->params[1] : null;
     if (!($messageboard = \steam_factory::get_object($GLOBALS["STEAM"]->get_id(), $forum_id))) {
         include "bad_link.php";
         exit;
     }
     if ($messageboard instanceof \steam_document) {
         $thread = $messageboard;
         $messageboard = $thread->get_annotating();
         define("OBJ_ID", $thread->get_id());
         if (!$thread->check_access_read($user)) {
             throw new \Exception("No rights to view this.", E_USER_RIGHTS);
         }
     } else {
         define("OBJ_ID", $messageboard->get_id());
         if (!$messageboard->check_access_read($user)) {
             throw new \Exception("No rights to view this.", E_USER_RIGHTS);
         }
     }
     if (!$messageboard instanceof \steam_messageboard) {
         include "bad_link.php";
         exit;
     }
     $is_watching = FALSE;
     if (is_array($rss_feeds)) {
         foreach (array_keys($rss_feeds) as $item) {
             if ($item == $messageboard->get_id()) {
                 $is_watching = TRUE;
             }
         }
     }
     $content = \Messageboard::getInstance()->loadTemplate("forum_all_topics.template.html");
     $dsc = $messageboard->get_attribute("OBJ_DESC");
     if (!empty($dsc)) {
         $content->setCurrentBlock("BLOCK_DESCRIPTION");
         $content->setVariable("FORUM_DESCRIPTION", get_formatted_output($dsc));
         $content->parse("BLOCK_DESCRIPTION");
     }
     $grp = $messageboard->get_environment()->get_creator();
     if ($grp->get_name() == "learners" && $grp->get_attribute(OBJ_TYPE) == "course_learners") {
         $grp = $grp->get_parent_group();
     }
     $content->setVariable("CURRENT_DISCUSSIONS_LABEL", gettext("Current Thread"));
     $content->setVariable("LABEL_SEARCH", gettext("Search"));
     if (isset($_GET["action"]) && $_GET["action"] == "bookmark_rss") {
         \lms_steam::user_add_rssfeed($messageboard->get_id(), PATH_URL . "services/feeds/forum_public.php?id=" . $messageboard->get_id(), "discussion board", \lms_steam::get_link_to_root($messageboard));
         $_SESSION["confirmation"] = str_replace("%NAME", h($messageboard->get_name()), gettext("You are keeping an eye on '%NAME' from now on."));
         header("Location: " . PATH_URL . "forums/" . $messageboard->get_id() . "/");
         exit;
     }
     if (isset($_GET["action"]) && $_GET["action"] == "delete_bookmark") {
         $user = \lms_steam::get_current_user();
         $id = (int) $_GET["unsubscribe"];
         $feeds = $user->get_attribute("USER_RSS_FEEDS");
         if (!is_array($feeds)) {
             $feeds = array();
         }
         unset($feeds[$id]);
         $user->set_attribute("USER_RSS_FEEDS", $feeds);
         $_SESSION["confirmation"] = str_replace("%NAME", h($messageboard->get_name()), gettext("subscription of '%NAME' canceled."));
         header("Location: " . PATH_URL . "forums/" . $messageboard->get_id() . "/");
         exit;
     }
     if (empty($_GET["pattern"]) && !isset($author_id)) {
         $cache = get_cache_function(OBJ_ID, 300);
         $discussions = $cache->call("lms_forum::get_discussions", OBJ_ID);
     } elseif (isset($author_id)) {
         $cache = get_cache_function(\lms_steam::get_current_user()->get_name(), 300);
         $discussions = $cache->call("lms_forum::search_user_posts", $messageboard->get_id(), $author_id);
     } else {
         $cache = get_cache_function(\lms_steam::get_current_user()->get_name(), 300);
         $discussions = $cache->call("lms_forum::search_pattern", $messageboard->get_id(), $_GET["pattern"]);
     }
     $content->setVariable("LABEL_ALL_TOPICS", gettext("All Threads"));
     if ($messageboard->check_access_annotate(\lms_steam::get_current_user())) {
         $content->setCurrentBlock("BLOCK_WRITE_ACCESS");
         if (isset($author_id)) {
             $content->setVariable("LABEL_THREADS_POSTED_IN", gettext("All Threads"));
             // TODO: Passt der link?
             $content->setVariable("LINK_AUTHOR", PATH_URL . "forums/" . $messageboard->get_id() . "/");
         } else {
             $content->setVariable("LABEL_THREADS_POSTED_IN", gettext("Threads you've posted in"));
             // TODO: Passt der link?
             $content->setVariable("LINK_AUTHOR", PATH_URL . "forums/" . $messageboard->get_id() . "/?author=" . \lms_steam::get_current_user()->get_name());
         }
         // TODO: Passt der link?
         $content->setVariable("LINK_POST_NEW", PATH_URL . "messageboard/newDiscussion/" . $messageboard->get_id());
         $content->setVariable("LABEL_POST_NEW_THREAD", gettext("Post a new thread"));
         $content->parse("BLOCK_WRITE_ACCESS");
     }
     if ($messageboard->check_access_write(\lms_steam::get_current_user())) {
         $content->setCurrentBlock("BLOCK_ADMIN");
         $content->setVariable("LINK_EDIT", PATH_URL . "messageboard/editMessageboard/" . $messageboard->get_id());
         $content->setVariable("LABEL_EDIT", gettext("Preferences"));
         $content->setVariable("LINK_DELETE", PATH_URL . "messageboard/deleteMessageboard/" . $messageboard->get_id());
//.........这里部分代码省略.........

        $wid = $object->get_id();
        // Clean Cache for the deleted wiki
        require_once "Cache/Lite.php";
        $cache = new Cache_Lite(array("cacheDir" => PATH_CACHE));
        $cache = get_cache_function($wid, 600);
        $cache->drop("lms_steam::get_items", $wid);
        // Handle Related Cache-Data
        require_once "Cache/Lite.php";
        $cache = new Cache_Lite(array("cacheDir" => PATH_CACHE));
        $cache->clean($wid);
        // clean wiki cache (not used by wiki)
        $fcache = get_cache_function($object->get_id(), 600);
        $fcache->drop("lms_wiki::get_items", $object->get_id());
        // Clean communication summary cache für the group/course
        if (is_object($workroom)) {
            $cache = get_cache_function(lms_steam::get_current_user()->get_name(), 600);
            $cache->drop("lms_steam::get_inventory_recursive", $workroom->get_id(), CLASS_CONTAINER | CLASS_ROOM, array("OBJ_TYPE", "WIKI_LANGUAGE"));
            $cache->drop("lms_steam::get_group_communication_objects", $workroom->get_id(), CLASS_MESSAGEBOARD | CLASS_CALENDAR | CLASS_CONTAINER | CLASS_ROOM);
        }
        header("Location: " . $values["return_to"]);
        exit;
    }
}
$content = new HTML_TEMPLATE_IT();
$content->loadTemplateFile(PATH_TEMPLATES . "object_delete.template.html");
if ($object->check_access_write($user)) {
    $content->setVariable("LABEL_ARE_YOU_SURE", str_replace("%NAME", h($object->get_name()), gettext("Are you sure you want to delete the wiki '%NAME' ?")));
    $rootlink = lms_steam::get_link_to_root($object);
    $content->setVariable("DELETE_BACK_LINK", $rootlink[1]["link"] . "communication/");
    $content->setCurrentBlock("BLOCK_DELETE");
    $content->setVariable("FORM_ACTION", $_SERVER["REQUEST_URI"]);

 public function get_context_menu($context, $params = array())
 {
     $current_user = lms_steam::get_current_user();
     // own profile:
     if ($current_user->get_id() == $this->steam_user->get_id()) {
         switch ($context) {
             case "profile":
                 if (CHANGE_PROFILE_DATA | CHANGE_PROFILE_PICTURE | CHANGE_PROFILE_PRIVACY | PROFILE_VISITORS) {
                     return array(CHANGE_PROFILE_DATA && PROFILE_EDIT ? array("link" => PATH_URL . "profile/edit/", "name" => gettext("Edit profile")) : "", CHANGE_PROFILE_PICTURE && PROFILE_PICTURE ? array("link" => PATH_URL . "profile/image/", "name" => gettext("Change buddy icon")) : "", CHANGE_PROFILE_PRIVACY && PROFILE_PRIVACY ? array("link" => PATH_URL . "profile/privacy/", "name" => gettext("Profile Privacy")) : "", USERMANAGEMENT && CHANGE_PASSWORD ? array("link" => PATH_URL . "usermanagement", "name" => "Passwort ändern") : "", PROFILE_VISITORS ? array("link" => PATH_URL . "profile_visitors.php", "name" => gettext("Visitors of your profile")) : "");
                 }
                 break;
             case "groups":
                 if (SHOW_ALL_PUBLIC_GROUPS | CREATE_GROUPS) {
                     return array(SHOW_ALL_PUBLIC_GROUPS ? array("link" => PATH_URL . "groups/", "name" => gettext("Show public groups")) : "", CREATE_GROUPS ? array("link" => PATH_URL . "groups_create.php?parent=" . STEAM_PUBLIC_GROUP, "name" => gettext("Create group")) : "");
                 }
                 break;
             case "contacts":
                 if (USER_SEARCH) {
                     return array(array("link" => PATH_URL . "search/people/", "name" => gettext("Search a person")));
                 }
                 break;
             default:
                 return array();
         }
     } else {
         $context_menu = array();
         $current_users_cache = get_cache_function($current_user->get_id(), 8640);
         $current_users_buddies = $current_users_cache->call("lms_steam::user_get_buddies", $current_user->get_name(), FALSE);
         $is_buddy = FALSE;
         foreach ($current_users_buddies as $buddy) {
             if ($buddy["OBJ_ID"] == $this->steam_user->get_id()) {
                 $is_buddy = TRUE;
                 break;
             }
         }
         $contact_confirmed = $this->steam_user->contact_is_confirmed($current_user);
         if (!$is_buddy) {
             $toconfirm = $current_user->get_attribute("USER_CONTACTS_TOCONFIRM");
             if (!is_array($toconfirm)) {
                 $toconfirm = array();
             }
             $confirm_necessary = FALSE;
             foreach ($toconfirm as $tc) {
                 if (is_object($tc) && $tc->get_id() == $current_user->get_id()) {
                     $confirm_necessary = TRUE;
                     break;
                 }
             }
             if (!$confirm_necessary) {
                 PROFILE_MANAGE_CONTACT ? $context_menu[] = array("link" => PATH_URL . "contact_add.php?id=" . $this->steam_user->get_id(), "name" => gettext("Add this person as a contact")) : "";
             } else {
                 PROFILE_MANAGE_CONTACT ? $context_menu[] = array("link" => PATH_URL . "contact_confirm.php?id=" . $this->steam_user->get_id(), "name" => gettext("Confirm this contact")) : "";
             }
             PROFILE_SEND_MAIL ? $context_menu[] = array("link" => PATH_URL . "messages_write.php?to=" . $this->steam_user->get_name(), "name" => gettext("Send this person a message")) : "";
         } else {
             PROFILE_SEND_MAIL ? $context_menu[] = array("link" => PATH_URL . "messages_write.php?to=" . $this->steam_user->get_name(), "name" => gettext("Send this person a message")) : "";
             PROFILE_INTRODUCE_PERSON ? $context_menu[] = array("link" => PATH_URL . "contact_introduction.php?type=introduction&id=" . $this->steam_user->get_id(), "name" => gettext("Introduce this person")) : "";
             PROFILE_MANAGE_CONTACT ? $context_menu[] = array("link" => PATH_URL . "contact_delete.php?id=" . $this->steam_user->get_id(), "name" => gettext("Delete contact to this person")) : "";
         }
         return $context_menu;
     }
 }

 public function frameResponse(\FrameResponseObject $frameResponseObject)
 {
     $forum_id = $this->params[0];
     $comment_id = $this->params[1];
     $portal = \lms_portal::get_instance();
     $user = \lms_steam::get_current_user();
     $rss_feeds = $user->get_attribute("USER_RSS_FEEDS");
     if (!($messageboard = \steam_factory::get_object($GLOBALS["STEAM"]->get_id(), $forum_id))) {
         include "bad_link.php";
         exit;
     }
     if ($messageboard instanceof \steam_document) {
         $thread = $messageboard;
         $messageboard = $thread->get_annotating();
         define("OBJ_ID", $thread->get_id());
         if (!$thread->check_access_read($user)) {
             throw new \Exception("No rights to view this.", E_USER_RIGHTS);
         }
     } else {
         define("OBJ_ID", $messageboard->get_id());
         if (!$messageboard->check_access_read($user)) {
             throw new \Exception("No rights to view this.", E_USER_RIGHTS);
         }
     }
     if (!$messageboard instanceof \steam_messageboard) {
         include "bad_link.php";
         exit;
     }
     $is_watching = FALSE;
     if (is_array($rss_feeds)) {
         foreach (array_keys($rss_feeds) as $item) {
             if ($item == $messageboard->get_id()) {
                 $is_watching = TRUE;
             }
         }
     }
     $comment = \steam_factory::get_object($GLOBALS["STEAM"]->get_id(), $comment_id);
     $content = \Messageboard::getInstance()->loadTemplate("comment_edit.template.html");
     if ($_SERVER["REQUEST_METHOD"] == "GET") {
         $content->setVariable("LABEL_HERE_IT_IS", "");
         $content->setVariable("TEXT_COMMENT", h($comment->get_content()));
         $content->setVariable("BACK_LINK", $_SERVER["HTTP_REFERER"]);
     } else {
         $values = $_POST["values"];
         if (!empty($values["save"])) {
             $comment->set_content($values["message"]);
             require_once "Cache/Li