. /** * This filter provides automatic linking to * activities when its name (title) is found inside every Moodle text * * @package filter * @subpackage activitynames * @copyright 2004 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ defined('MOODLE_INTERNAL') || die(); /** * Activity name filtering */ class filter_activitynames extends moodle_text_filter { // Trivial-cache - keyed on $cachedcourseid static $activitylist = null; static $cachedcourseid; function filter($text, array $options = array()) { global $CFG, $COURSE, $DB; if (!$courseid = get_courseid_from_context($this->context)) { return $text; } // Initialise/invalidate our trivial cache if dealing with a different course if (!isset($this->cachedcourseid) || $this->cachedcourseid !== (int)$courseid) { $this->activitylist = null; } $this->cachedcourseid = (int)$courseid; /// It may be cached if (is_null($this->activitylist)) { $this->activitylist = array(); if ($COURSE->id == $courseid) { $course = $COURSE; } else { $course = $DB->get_record("course", array("id"=>$courseid)); } if (!isset($course->modinfo)) { return $text; } /// Casting $course->modinfo to string prevents one notice when the field is null $modinfo = unserialize((string)$course->modinfo); if (!empty($modinfo)) { $this->activitylist = array(); /// We will store all the activities here //Sort modinfo by name length usort($modinfo, 'filter_activitynames_comparemodulenamesbylength'); foreach ($modinfo as $activity) { //Exclude labels, hidden activities and activities for group members only if ($activity->mod != "label" and $activity->visible and empty($activity->groupmembersonly)) { $title = s(trim(strip_tags($activity->name))); $currentname = trim($activity->name); $entitisedname = s($currentname); /// Avoid empty or unlinkable activity names if (!empty($title)) { $href_tag_begin = "wwwroot/mod/$activity->mod/view.php?id=$activity->cm\">"; $this->activitylist[] = new filterobject($currentname, $href_tag_begin, '', false, true); if ($currentname != $entitisedname) { /// If name has some entity (& " < >) add that filter too. MDL-17545 $this->activitylist[] = new filterobject($entitisedname, $href_tag_begin, '', false, true); } } } } } } if ($this->activitylist) { return $text = filter_phrases ($text, $this->activitylist); } else { return $text; } } } //This function is used to order module names from longer to shorter function filter_activitynames_comparemodulenamesbylength($a, $b) { if (strlen($a->name) == strlen($b->name)) { return 0; } return (strlen($a->name) < strlen($b->name)) ? 1 : -1; }