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dcfffe3072
The only option passed at the moment is the original format in which the user inserted the text. Other options can be added later if/when needed.
112 lines
4.1 KiB
PHP
112 lines
4.1 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* This filter provides automatic linking to
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* activities when its name (title) is found inside every Moodle text
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*
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* @package filter
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* @subpackage activitynames
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* @copyright 2004 onwards Eloy Lafuente (stronk7) {@link http://stronk7.com}
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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defined('MOODLE_INTERNAL') || die();
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/**
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* Activity name filtering
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*/
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class filter_activitynames extends moodle_text_filter {
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// Trivial-cache - keyed on $cachedcourseid
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static $activitylist = null;
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static $cachedcourseid;
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function filter($text, array $options = array()) {
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global $CFG, $COURSE, $DB;
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if (!$courseid = get_courseid_from_context($this->context)) {
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return $text;
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}
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// Initialise/invalidate our trivial cache if dealing with a different course
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if (!isset($this->cachedcourseid) || $this->cachedcourseid !== (int)$courseid) {
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$this->activitylist = null;
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}
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$this->cachedcourseid = (int)$courseid;
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/// It may be cached
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if (is_null($this->activitylist)) {
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$this->activitylist = array();
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if ($COURSE->id == $courseid) {
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$course = $COURSE;
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} else {
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$course = $DB->get_record("course", array("id"=>$courseid));
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}
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if (!isset($course->modinfo)) {
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return $text;
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}
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/// Casting $course->modinfo to string prevents one notice when the field is null
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$modinfo = unserialize((string)$course->modinfo);
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if (!empty($modinfo)) {
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$this->activitylist = array(); /// We will store all the activities here
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//Sort modinfo by name length
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usort($modinfo, 'filter_activitynames_comparemodulenamesbylength');
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foreach ($modinfo as $activity) {
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//Exclude labels, hidden activities and activities for group members only
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if ($activity->mod != "label" and $activity->visible and empty($activity->groupmembersonly)) {
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$title = s(trim(strip_tags($activity->name)));
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$currentname = trim($activity->name);
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$entitisedname = s($currentname);
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/// Avoid empty or unlinkable activity names
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if (!empty($title)) {
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$href_tag_begin = "<a class=\"autolink\" title=\"$title\" href=\"$CFG->wwwroot/mod/$activity->mod/view.php?id=$activity->cm\">";
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$this->activitylist[] = new filterobject($currentname, $href_tag_begin, '</a>', false, true);
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if ($currentname != $entitisedname) { /// If name has some entity (& " < >) add that filter too. MDL-17545
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$this->activitylist[] = new filterobject($entitisedname, $href_tag_begin, '</a>', false, true);
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}
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}
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}
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}
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}
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}
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if ($this->activitylist) {
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return $text = filter_phrases ($text, $this->activitylist);
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} else {
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return $text;
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}
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}
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}
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//This function is used to order module names from longer to shorter
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function filter_activitynames_comparemodulenamesbylength($a, $b) {
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if (strlen($a->name) == strlen($b->name)) {
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return 0;
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}
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return (strlen($a->name) < strlen($b->name)) ? 1 : -1;
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}
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