Current File : /opt/bitnami/apps/moodle/htdocs.backup/filter/activitynames/filter.php
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* 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 and $cacheduserid.
static $activitylist = null;
static $cachedcourseid;
static $cacheduserid;
function filter($text, array $options = array()) {
global $USER; // Since 2.7 we can finally start using globals in filters.
$coursectx = $this->context->get_course_context(false);
if (!$coursectx) {
return $text;
}
$courseid = $coursectx->instanceid;
// Initialise/invalidate our trivial cache if dealing with a different course.
if (!isset(self::$cachedcourseid) || self::$cachedcourseid !== (int)$courseid) {
self::$activitylist = null;
}
self::$cachedcourseid = (int)$courseid;
// And the same for user id.
if (!isset(self::$cacheduserid) || self::$cacheduserid !== (int)$USER->id) {
self::$activitylist = null;
}
self::$cacheduserid = (int)$USER->id;
/// It may be cached
if (is_null(self::$activitylist)) {
self::$activitylist = array();
$modinfo = get_fast_modinfo($courseid);
if (!empty($modinfo->cms)) {
self::$activitylist = array(); // We will store all the created filters here.
// Create array of visible activities sorted by the name length (we are only interested in properties name and url).
$sortedactivities = array();
foreach ($modinfo->cms as $cm) {
// Use normal access control and visibility, but exclude labels and hidden activities.
if ($cm->visible and $cm->has_view() and $cm->uservisible) {
$sortedactivities[] = (object)array(
'name' => $cm->name,
'url' => $cm->url,
'id' => $cm->id,
'namelen' => -strlen($cm->name), // Negative value for reverse sorting.
);
}
}
// Sort activities by the length of the activity name in reverse order.
core_collator::asort_objects_by_property($sortedactivities, 'namelen', core_collator::SORT_NUMERIC);
foreach ($sortedactivities as $cm) {
$title = s(trim(strip_tags($cm->name)));
$currentname = trim($cm->name);
$entitisedname = s($currentname);
// Avoid empty or unlinkable activity names.
if (!empty($title)) {
$href_tag_begin = html_writer::start_tag('a',
array('class' => 'autolink', 'title' => $title,
'href' => $cm->url));
self::$activitylist[$cm->id] = new filterobject($currentname, $href_tag_begin, '</a>', false, true);
if ($currentname != $entitisedname) {
// If name has some entity (& " < >) add that filter too. MDL-17545.
self::$activitylist[$cm->id.'-e'] = new filterobject($entitisedname, $href_tag_begin, '</a>', false, true);
}
}
}
}
}
$filterslist = array();
if (self::$activitylist) {
$cmid = $this->context->instanceid;
if ($this->context->contextlevel == CONTEXT_MODULE && isset(self::$activitylist[$cmid])) {
// remove filterobjects for the current module
$filterslist = array_values(array_diff_key(self::$activitylist, array($cmid => 1, $cmid.'-e' => 1)));
} else {
$filterslist = array_values(self::$activitylist);
}
}
if ($filterslist) {
return $text = filter_phrases($text, $filterslist);
} else {
return $text;
}
}
}
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