<?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/>.

/**

<  * Base renderer for outputting course formats.



>  * Legacy course format renderer file.


 *

<  * @package core
<  * @copyright 2012 Dan Poltawski
<  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
<  * @since Moodle 2.3
<  */
< 
< defined('MOODLE_INTERNAL') || die();
< 
< 
< /**
<  * This is a convenience renderer which can be used by section based formats
<  * to reduce code duplication. It is not necessary for all course formats to
<  * use this and its likely to change in future releases.



>  * This file exists only for legacy reasons. Most third party format
>  * plugins include this file to extend the course format renderer. Now all
>  * format renderers are located in core_courseformat\output and uses autoload.


 *

<  * @package core



>  * @deprecated since Moodle 4.0 MDL-72656
>  *
>  * @package core_courseformat


 * @copyright 2012 Dan Poltawski
 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 * @since Moodle 2.3
 */

< abstract class format_section_renderer_base extends plugin_renderer_base {
< 
<     /** @var core_course_renderer contains instance of core course renderer */
<     protected $courserenderer;
< 
<     /**
<      * Constructor method, calls the parent constructor
<      *
<      * @param moodle_page $page
<      * @param string $target one of rendering target constants
<      */
<     public function __construct(moodle_page $page, $target) {
<         parent::__construct($page, $target);
<         $this->courserenderer = $this->page->get_renderer('core', 'course');
<     }
< 
<     /**
<      * Generate the starting container html for a list of sections
<      * @return string HTML to output.
<      */
<     abstract protected function start_section_list();
< 
<     /**
<      * Generate the closing container html for a list of sections
<      * @return string HTML to output.
<      */
<     abstract protected function end_section_list();
< 
<     /**
<      * Generate the title for this section page
<      * @return string the page title
<      */
<     abstract protected function page_title();
< 
<     /**
<      * Generate the section title, wraps it in a link to the section page if page is to be displayed on a separate page
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course The course entry from DB
<      * @return string HTML to output.
<      */
<     public function section_title($section, $course) {
<         $title = get_section_name($course, $section);
<         $url = course_get_url($course, $section->section, array('navigation' => true));
<         if ($url) {
<             $title = html_writer::link($url, $title);
<         }
<         return $title;
<     }
< 
<     /**
<      * Generate the section title to be displayed on the section page, without a link
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course The course entry from DB
<      * @return string HTML to output.
<      */
<     public function section_title_without_link($section, $course) {
<         return get_section_name($course, $section);
<     }
< 
<     /**
<      * Generate the edit control action menu
<      *
<      * @param array $controls The edit control items from section_edit_control_items
<      * @param stdClass $course The course entry from DB
<      * @param stdClass $section The course_section entry from DB
<      * @return string HTML to output.
<      */
<     protected function section_edit_control_menu($controls, $course, $section) {
<         $o = "";
<         if (!empty($controls)) {
<             $menu = new action_menu();
<             $menu->set_menu_trigger(get_string('edit'));
<             $menu->attributes['class'] .= ' section-actions';
<             foreach ($controls as $value) {
<                 $url = empty($value['url']) ? '' : $value['url'];
<                 $icon = empty($value['icon']) ? '' : $value['icon'];
<                 $name = empty($value['name']) ? '' : $value['name'];
<                 $attr = empty($value['attr']) ? array() : $value['attr'];
<                 $class = empty($value['pixattr']['class']) ? '' : $value['pixattr']['class'];
<                 $al = new action_menu_link_secondary(
<                     new moodle_url($url),
<                     new pix_icon($icon, '', null, array('class' => "smallicon " . $class)),
<                     $name,
<                     $attr
<                 );
<                 $menu->add($al);
<             }
< 
<             $o .= html_writer::div($this->render($menu), 'section_action_menu',
<                 array('data-sectionid' => $section->id));
<         }
< 
<         return $o;
<     }
< 
<     /**
<      * Generate the content to displayed on the right part of a section
<      * before course modules are included
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course The course entry from DB
<      * @param bool $onsectionpage true if being printed on a section page
<      * @return string HTML to output.
<      */
<     protected function section_right_content($section, $course, $onsectionpage) {
<         $o = $this->output->spacer();
< 
<         $controls = $this->section_edit_control_items($course, $section, $onsectionpage);
<         $o .= $this->section_edit_control_menu($controls, $course, $section);
< 
<         return $o;
<     }
< 
<     /**
<      * Generate the content to displayed on the left part of a section
<      * before course modules are included
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course The course entry from DB
<      * @param bool $onsectionpage true if being printed on a section page
<      * @return string HTML to output.
<      */
<     protected function section_left_content($section, $course, $onsectionpage) {
<         $o = '';
< 
<         if ($section->section != 0) {
<             // Only in the non-general sections.
<             if (course_get_format($course)->is_section_current($section)) {
<                 $o = get_accesshide(get_string('currentsection', 'format_'.$course->format));
<             }
<         }
< 
<         return $o;
<     }
< 
<     /**
<      * Generate the display of the header part of a section before
<      * course modules are included
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course The course entry from DB
<      * @param bool $onsectionpage true if being printed on a single-section page
<      * @param int $sectionreturn The section to return to after an action
<      * @return string HTML to output.
<      */
<     protected function section_header($section, $course, $onsectionpage, $sectionreturn=null) {
<         $o = '';
<         $currenttext = '';
<         $sectionstyle = '';
< 
<         if ($section->section != 0) {
<             // Only in the non-general sections.
<             if (!$section->visible) {
<                 $sectionstyle = ' hidden';
<             }
<             if (course_get_format($course)->is_section_current($section)) {
<                 $sectionstyle = ' current';
<             }
<         }
< 
<         $o .= html_writer::start_tag('li', [
<             'id' => 'section-'.$section->section,
<             'class' => 'section main clearfix'.$sectionstyle,
<             'role' => 'region',
<             'aria-labelledby' => "sectionid-{$section->id}-title",
<             'data-sectionid' => $section->section,
<             'data-sectionreturnid' => $sectionreturn
<         ]);
< 
<         $leftcontent = $this->section_left_content($section, $course, $onsectionpage);
<         $o.= html_writer::tag('div', $leftcontent, array('class' => 'left side'));
< 
<         $rightcontent = $this->section_right_content($section, $course, $onsectionpage);
<         $o.= html_writer::tag('div', $rightcontent, array('class' => 'right side'));
<         $o.= html_writer::start_tag('div', array('class' => 'content'));
< 
<         // When not on a section page, we display the section titles except the general section if null
<         $hasnamenotsecpg = (!$onsectionpage && ($section->section != 0 || !is_null($section->name)));
< 
<         // When on a section page, we only display the general section title, if title is not the default one
<         $hasnamesecpg = ($onsectionpage && ($section->section == 0 && !is_null($section->name)));
< 
<         $classes = ' accesshide';
<         if ($hasnamenotsecpg || $hasnamesecpg) {
<             $classes = '';
<         }
<         $sectionname = html_writer::tag('span', $this->section_title($section, $course));
<         $o .= $this->output->heading($sectionname, 3, 'sectionname' . $classes, "sectionid-{$section->id}-title");
< 
<         $o .= $this->section_availability($section);
< 
<         $o .= html_writer::start_tag('div', array('class' => 'summary'));
<         if ($section->uservisible || $section->visible) {
<             // Show summary if section is available or has availability restriction information.
<             // Do not show summary if section is hidden but we still display it because of course setting
<             // "Hidden sections are shown in collapsed form".
<             $o .= $this->format_summary_text($section);
<         }
<         $o .= html_writer::end_tag('div');
< 
<         return $o;
<     }
< 
<     /**
<      * Generate the display of the footer part of a section
<      *
<      * @return string HTML to output.
<      */
<     protected function section_footer() {
<         $o = html_writer::end_tag('div');
<         $o.= html_writer::end_tag('li');
< 
<         return $o;
<     }
< 
<     /**
<      * @deprecated since Moodle 3.0 MDL-48947 - Use format_section_renderer_base::section_edit_control_items() instead
<      */
<     protected function section_edit_controls() {
<         throw new coding_exception('section_edit_controls() can not be used anymore. Please use ' .
<             'section_edit_control_items() instead.');
<     }
< 
<     /**
<      * Generate the edit control items of a section
<      *
<      * @param stdClass $course The course entry from DB
<      * @param stdClass $section The course_section entry from DB
<      * @param bool $onsectionpage true if being printed on a section page
<      * @return array of edit control items
<      */
<     protected function section_edit_control_items($course, $section, $onsectionpage = false) {
<         if (!$this->page->user_is_editing()) {
<             return array();
<         }
< 
<         $sectionreturn = $onsectionpage ? $section->section : null;
< 
<         $coursecontext = context_course::instance($course->id);
<         $numsections = course_get_format($course)->get_last_section_number();
<         $isstealth = $section->section > $numsections;
< 
<         $baseurl = course_get_url($course, $sectionreturn);
<         $baseurl->param('sesskey', sesskey());
< 
<         $controls = array();
< 
<         if (!$isstealth && has_capability('moodle/course:update', $coursecontext)) {
<             if ($section->section > 0
<                 && get_string_manager()->string_exists('editsection', 'format_'.$course->format)) {
<                 $streditsection = get_string('editsection', 'format_'.$course->format);
<             } else {
<                 $streditsection = get_string('editsection');
<             }
< 
<             $controls['edit'] = array(
<                 'url'   => new moodle_url('/course/editsection.php', array('id' => $section->id, 'sr' => $sectionreturn)),
<                 'icon' => 'i/settings',
<                 'name' => $streditsection,
<                 'pixattr' => array('class' => ''),
<                 'attr' => array('class' => 'icon edit'));
<         }
< 
<         if ($section->section) {
<             $url = clone($baseurl);
<             if (!$isstealth) {
<                 if (has_capability('moodle/course:sectionvisibility', $coursecontext)) {
<                     if ($section->visible) { // Show the hide/show eye.
<                         $strhidefromothers = get_string('hidefromothers', 'format_'.$course->format);
<                         $url->param('hide', $section->section);
<                         $controls['visiblity'] = array(
<                             'url' => $url,
<                             'icon' => 'i/hide',
<                             'name' => $strhidefromothers,
<                             'pixattr' => array('class' => ''),
<                             'attr' => array('class' => 'icon editing_showhide',
<                                 'data-sectionreturn' => $sectionreturn, 'data-action' => 'hide'));
<                     } else {
<                         $strshowfromothers = get_string('showfromothers', 'format_'.$course->format);
<                         $url->param('show',  $section->section);
<                         $controls['visiblity'] = array(
<                             'url' => $url,
<                             'icon' => 'i/show',
<                             'name' => $strshowfromothers,
<                             'pixattr' => array('class' => ''),
<                             'attr' => array('class' => 'icon editing_showhide',
<                                 'data-sectionreturn' => $sectionreturn, 'data-action' => 'show'));
<                     }
<                 }
< 
<                 if (!$onsectionpage) {
<                     if (has_capability('moodle/course:movesections', $coursecontext)) {
<                         $url = clone($baseurl);
<                         if ($section->section > 1) { // Add a arrow to move section up.
<                             $url->param('section', $section->section);
<                             $url->param('move', -1);
<                             $strmoveup = get_string('moveup');
<                             $controls['moveup'] = array(
<                                 'url' => $url,
<                                 'icon' => 'i/up',
<                                 'name' => $strmoveup,
<                                 'pixattr' => array('class' => ''),
<                                 'attr' => array('class' => 'icon moveup'));
<                         }
< 
<                         $url = clone($baseurl);
<                         if ($section->section < $numsections) { // Add a arrow to move section down.
<                             $url->param('section', $section->section);
<                             $url->param('move', 1);
<                             $strmovedown = get_string('movedown');
<                             $controls['movedown'] = array(
<                                 'url' => $url,
<                                 'icon' => 'i/down',
<                                 'name' => $strmovedown,
<                                 'pixattr' => array('class' => ''),
<                                 'attr' => array('class' => 'icon movedown'));
<                         }
<                     }
<                 }
<             }
< 
<             if (course_can_delete_section($course, $section)) {
<                 if (get_string_manager()->string_exists('deletesection', 'format_'.$course->format)) {
<                     $strdelete = get_string('deletesection', 'format_'.$course->format);
<                 } else {
<                     $strdelete = get_string('deletesection');
<                 }
<                 $url = new moodle_url('/course/editsection.php', array(
<                     'id' => $section->id,
<                     'sr' => $sectionreturn,
<                     'delete' => 1,
<                     'sesskey' => sesskey()));
<                 $controls['delete'] = array(
<                     'url' => $url,
<                     'icon' => 'i/delete',
<                     'name' => $strdelete,
<                     'pixattr' => array('class' => ''),
<                     'attr' => array('class' => 'icon editing_delete'));
<             }
<         }
< 
<         return $controls;
<     }
< 
<     /**
<      * Generate a summary of a section for display on the 'course index page'
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course The course entry from DB
<      * @param array    $mods (argument not used)
<      * @return string HTML to output.
<      */
<     protected function section_summary($section, $course, $mods) {
<         $classattr = 'section main section-summary clearfix';
<         $linkclasses = '';
< 
<         // If section is hidden then display grey section link
<         if (!$section->visible) {
<             $classattr .= ' hidden';
<             $linkclasses .= ' dimmed_text';
<         } else if (course_get_format($course)->is_section_current($section)) {
<             $classattr .= ' current';
<         }
< 
<         $title = get_section_name($course, $section);
<         $o = '';
<         $o .= html_writer::start_tag('li', [
<             'id' => 'section-'.$section->section,
<             'class' => $classattr,
<             'role' => 'region',
<             'aria-label' => $title,
<             'data-sectionid' => $section->section
<         ]);
< 
<         $o .= html_writer::tag('div', '', array('class' => 'left side'));
<         $o .= html_writer::tag('div', '', array('class' => 'right side'));
<         $o .= html_writer::start_tag('div', array('class' => 'content'));
< 
<         if ($section->uservisible) {
<             $title = html_writer::tag('a', $title,
<                     array('href' => course_get_url($course, $section->section), 'class' => $linkclasses));
<         }
<         $o .= $this->output->heading($title, 3, 'section-title');
< 
<         $o .= $this->section_availability($section);
<         $o.= html_writer::start_tag('div', array('class' => 'summarytext'));
< 
<         if ($section->uservisible || $section->visible) {
<             // Show summary if section is available or has availability restriction information.
<             // Do not show summary if section is hidden but we still display it because of course setting
<             // "Hidden sections are shown in collapsed form".
<             $o .= $this->format_summary_text($section);
<         }
<         $o.= html_writer::end_tag('div');
<         $o.= $this->section_activity_summary($section, $course, null);
< 
<         $o .= html_writer::end_tag('div');
<         $o .= html_writer::end_tag('li');
< 
<         return $o;
<     }
< 
<     /**
<      * Generate a summary of the activites in a section
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @param stdClass $course the course record from DB
<      * @param array    $mods (argument not used)
<      * @return string HTML to output.
<      */
<     protected function section_activity_summary($section, $course, $mods) {
<         $modinfo = get_fast_modinfo($course);
<         if (empty($modinfo->sections[$section->section])) {
<             return '';
<         }
< 
<         // Generate array with count of activities in this section:
<         $sectionmods = array();
<         $total = 0;
<         $complete = 0;
<         $cancomplete = isloggedin() && !isguestuser();
<         $completioninfo = new completion_info($course);
<         foreach ($modinfo->sections[$section->section] as $cmid) {
<             $thismod = $modinfo->cms[$cmid];
< 
<             if ($thismod->uservisible) {
<                 if (isset($sectionmods[$thismod->modname])) {
<                     $sectionmods[$thismod->modname]['name'] = $thismod->modplural;
<                     $sectionmods[$thismod->modname]['count']++;
<                 } else {
<                     $sectionmods[$thismod->modname]['name'] = $thismod->modfullname;
<                     $sectionmods[$thismod->modname]['count'] = 1;
<                 }
<                 if ($cancomplete && $completioninfo->is_enabled($thismod) != COMPLETION_TRACKING_NONE) {
<                     $total++;
<                     $completiondata = $completioninfo->get_data($thismod, true);
<                     if ($completiondata->completionstate == COMPLETION_COMPLETE ||
<                             $completiondata->completionstate == COMPLETION_COMPLETE_PASS) {
<                         $complete++;
<                     }
<                 }
<             }
<         }
< 
<         if (empty($sectionmods)) {
<             // No sections
<             return '';
<         }
< 
<         // Output section activities summary:
<         $o = '';
<         $o.= html_writer::start_tag('div', array('class' => 'section-summary-activities pr-2 mdl-right'));
<         foreach ($sectionmods as $mod) {
<             $o.= html_writer::start_tag('span', array('class' => 'activity-count'));
<             $o.= $mod['name'].': '.$mod['count'];
<             $o.= html_writer::end_tag('span');
<         }
<         $o.= html_writer::end_tag('div');
< 
<         // Output section completion data
<         if ($total > 0) {
<             $a = new stdClass;
<             $a->complete = $complete;
<             $a->total = $total;
< 
<             $o.= html_writer::start_tag('div', array('class' => 'section-summary-activities pr-2 mdl-right'));
<             $o.= html_writer::tag('span', get_string('progresstotal', 'completion', $a), array('class' => 'activity-count'));
<             $o.= html_writer::end_tag('div');
<         }
< 
<         return $o;
<     }
< 
<     /**
<      * If section is not visible, display the message about that ('Not available
<      * until...', that sort of thing). Otherwise, returns blank.
<      *
<      * For users with the ability to view hidden sections, it shows the
<      * information even though you can view the section and also may include
<      * slightly fuller information (so that teachers can tell when sections
<      * are going to be unavailable etc). This logic is the same as for
<      * activities.
<      *
<      * @param section_info $section The course_section entry from DB
<      * @param bool $canviewhidden True if user can view hidden sections
<      * @return string HTML to output
<      */
<     protected function section_availability_message($section, $canviewhidden) {
<         global $CFG;
<         $o = '';
<         if (!$section->visible) {
<             if ($canviewhidden) {
<                 $o .= $this->courserenderer->availability_info(get_string('hiddenfromstudents'), 'ishidden');
<             } else {
<                 // We are here because of the setting "Hidden sections are shown in collapsed form".
<                 // Student can not see the section contents but can see its name.
<                 $o .= $this->courserenderer->availability_info(get_string('notavailable'), 'ishidden');
<             }
<         } else if (!$section->uservisible) {
<             if ($section->availableinfo) {
<                 // Note: We only get to this function if availableinfo is non-empty,
<                 // so there is definitely something to print.
<                 $formattedinfo = \core_availability\info::format_info(
<                         $section->availableinfo, $section->course);
<                 $o .= $this->courserenderer->availability_info($formattedinfo, 'isrestricted');
<             }
<         } else if ($canviewhidden && !empty($CFG->enableavailability)) {
<             // Check if there is an availability restriction.
<             $ci = new \core_availability\info_section($section);
<             $fullinfo = $ci->get_full_information();
<             if ($fullinfo) {
<                 $formattedinfo = \core_availability\info::format_info(
<                         $fullinfo, $section->course);
<                 $o .= $this->courserenderer->availability_info($formattedinfo, 'isrestricted isfullinfo');
<             }
<         }
<         return $o;
<     }
< 
<     /**
<      * Displays availability information for the section (hidden, not available unles, etc.)
<      *
<      * @param section_info $section
<      * @return string
<      */
<     public function section_availability($section) {
<         $context = context_course::instance($section->course);
<         $canviewhidden = has_capability('moodle/course:viewhiddensections', $context);
<         return html_writer::div($this->section_availability_message($section, $canviewhidden), 'section_availability');
<     }
< 
<     /**
<      * Show if something is on on the course clipboard (moving around)
<      *
<      * @param stdClass $course The course entry from DB
<      * @param int $sectionno The section number in the course which is being displayed
<      * @return string HTML to output.
<      */
<     protected function course_activity_clipboard($course, $sectionno = null) {
<         global $USER;
< 
<         $o = '';
<         // If currently moving a file then show the current clipboard.
<         if (ismoving($course->id)) {
<             $url = new moodle_url('/course/mod.php',
<                 array('sesskey' => sesskey(),
<                       'cancelcopy' => true,
<                       'sr' => $sectionno,
<                 )
<             );
< 
<             $o.= html_writer::start_tag('div', array('class' => 'clipboard'));
<             $o.= strip_tags(get_string('activityclipboard', '', $USER->activitycopyname));
<             $o.= ' ('.html_writer::link($url, get_string('cancel')).')';
<             $o.= html_writer::end_tag('div');
<         }
< 
<         return $o;
<     }
< 
<     /**
<      * Generate next/previous section links for naviation
<      *
<      * @param stdClass $course The course entry from DB
<      * @param array $sections The course_sections entries from the DB
<      * @param int $sectionno The section number in the course which is being displayed
<      * @return array associative array with previous and next section link
<      */
<     protected function get_nav_links($course, $sections, $sectionno) {
<         // FIXME: This is really evil and should by using the navigation API.
<         $course = course_get_format($course)->get_course();
<         $canviewhidden = has_capability('moodle/course:viewhiddensections', context_course::instance($course->id))
<             or !$course->hiddensections;
< 
<         $links = array('previous' => '', 'next' => '');
<         $back = $sectionno - 1;
<         while ($back > 0 and empty($links['previous'])) {
<             if ($canviewhidden || $sections[$back]->uservisible) {
<                 $params = array();
<                 if (!$sections[$back]->visible) {
<                     $params = array('class' => 'dimmed_text');
<                 }
<                 $previouslink = html_writer::tag('span', $this->output->larrow(), array('class' => 'larrow'));
<                 $previouslink .= get_section_name($course, $sections[$back]);
<                 $links['previous'] = html_writer::link(course_get_url($course, $back), $previouslink, $params);
<             }
<             $back--;
<         }
< 
<         $forward = $sectionno + 1;
<         $numsections = course_get_format($course)->get_last_section_number();
<         while ($forward <= $numsections and empty($links['next'])) {
<             if ($canviewhidden || $sections[$forward]->uservisible) {
<                 $params = array();
<                 if (!$sections[$forward]->visible) {
<                     $params = array('class' => 'dimmed_text');
<                 }
<                 $nextlink = get_section_name($course, $sections[$forward]);
<                 $nextlink .= html_writer::tag('span', $this->output->rarrow(), array('class' => 'rarrow'));
<                 $links['next'] = html_writer::link(course_get_url($course, $forward), $nextlink, $params);
<             }
<             $forward++;
<         }
< 
<         return $links;
<     }
< 
<     /**
<      * Generate the header html of a stealth section
<      *
<      * @param int $sectionno The section number in the course which is being displayed
<      * @return string HTML to output.
<      */
<     protected function stealth_section_header($sectionno) {
<         $o = '';
<         $o .= html_writer::start_tag('li', [
<             'id' => 'section-'.$sectionno,
<             'class' => 'section main clearfix orphaned hidden',
<             'data-sectionid' => $sectionno
<         ]);
<         $o .= html_writer::tag('div', '', array('class' => 'left side'));
<         $course = course_get_format($this->page->course)->get_course();
<         $section = course_get_format($this->page->course)->get_section($sectionno);
<         $rightcontent = $this->section_right_content($section, $course, false);
<         $o .= html_writer::tag('div', $rightcontent, array('class' => 'right side'));
<         $o .= html_writer::start_tag('div', array('class' => 'content'));
<         $o .= $this->output->heading(
<             get_string('orphanedactivitiesinsectionno', '', $sectionno),
<             3,
<             'sectionname'
<         );
<         return $o;
<     }
< 
<     /**
<      * Generate footer html of a stealth section
<      *
<      * @return string HTML to output.
<      */
<     protected function stealth_section_footer() {
<         $o = html_writer::end_tag('div');
<         $o.= html_writer::end_tag('li');
<         return $o;
<     }
< 
<     /**
<      * Generate the html for a hidden section
<      *
<      * @param int $sectionno The section number in the course which is being displayed
<      * @param int|stdClass $courseorid The course to get the section name for (object or just course id)
<      * @return string HTML to output.
<      */
<     protected function section_hidden($sectionno, $courseorid = null) {
<         if ($courseorid) {
<             $sectionname = get_section_name($courseorid, $sectionno);
<             $strnotavailable = get_string('notavailablecourse', '', $sectionname);
<         } else {
<             $strnotavailable = get_string('notavailable');
<         }
< 
<         $o = '';
<         $o .= html_writer::start_tag('li', [
<             'id' => 'section-'.$sectionno,
<             'class' => 'section main clearfix hidden',
<             'data-sectionid' => $sectionno
<         ]);
<         $o.= html_writer::tag('div', '', array('class' => 'left side'));
<         $o.= html_writer::tag('div', '', array('class' => 'right side'));
<         $o.= html_writer::start_tag('div', array('class' => 'content'));
<         $o.= html_writer::tag('div', $strnotavailable);
<         $o.= html_writer::end_tag('div');
<         $o.= html_writer::end_tag('li');
<         return $o;
<     }
< 
<     /**
<      * Generate the html for the 'Jump to' menu on a single section page.
<      *
<      * @param stdClass $course The course entry from DB
<      * @param array $sections The course_sections entries from the DB
<      * @param $displaysection the current displayed section number.
<      *
<      * @return string HTML to output.
<      */
<     protected function section_nav_selection($course, $sections, $displaysection) {
<         global $CFG;
<         $o = '';
<         $sectionmenu = array();
<         $sectionmenu[course_get_url($course)->out(false)] = get_string('maincoursepage');
<         $modinfo = get_fast_modinfo($course);
<         $section = 1;
<         $numsections = course_get_format($course)->get_last_section_number();
<         while ($section <= $numsections) {
<             $thissection = $modinfo->get_section_info($section);
<             $showsection = $thissection->uservisible or !$course->hiddensections;
<             if (($showsection) && ($section != $displaysection) && ($url = course_get_url($course, $section))) {
<                 $sectionmenu[$url->out(false)] = get_section_name($course, $section);
<             }
<             $section++;
<         }
< 
<         $select = new url_select($sectionmenu, '', array('' => get_string('jumpto')));
<         $select->class = 'jumpmenu';
<         $select->formid = 'sectionmenu';
<         $o .= $this->output->render($select);
< 
<         return $o;
<     }
< 
<     /**
<      * Output the html for a single section page .
<      *
<      * @param stdClass $course The course entry from DB
<      * @param array $sections (argument not used)
<      * @param array $mods (argument not used)
<      * @param array $modnames (argument not used)
<      * @param array $modnamesused (argument not used)
<      * @param int $displaysection The section number in the course which is being displayed
<      */
<     public function print_single_section_page($course, $sections, $mods, $modnames, $modnamesused, $displaysection) {
<         $modinfo = get_fast_modinfo($course);
<         $course = course_get_format($course)->get_course();
< 
<         // Can we view the section in question?
<         if (!($sectioninfo = $modinfo->get_section_info($displaysection)) || !$sectioninfo->uservisible) {
<             // This section doesn't exist or is not available for the user.
<             // We actually already check this in course/view.php but just in case exit from this function as well.
<             print_error('unknowncoursesection', 'error', course_get_url($course),
<                 format_string($course->fullname));
<         }
< 
<         // Copy activity clipboard..
<         echo $this->course_activity_clipboard($course, $displaysection);
<         $thissection = $modinfo->get_section_info(0);
<         if ($thissection->summary or !empty($modinfo->sections[0]) or $this->page->user_is_editing()) {
<             echo $this->start_section_list();
<             echo $this->section_header($thissection, $course, true, $displaysection);
<             echo $this->courserenderer->course_section_cm_list($course, $thissection, $displaysection);
<             echo $this->courserenderer->course_section_add_cm_control($course, 0, $displaysection);
<             echo $this->section_footer();
<             echo $this->end_section_list();
<         }
< 
<         // Start single-section div
<         echo html_writer::start_tag('div', array('class' => 'single-section'));
< 
<         // The requested section page.
<         $thissection = $modinfo->get_section_info($displaysection);
< 
<         // Title with section navigation links.
<         $sectionnavlinks = $this->get_nav_links($course, $modinfo->get_section_info_all(), $displaysection);
<         $sectiontitle = '';
<         $sectiontitle .= html_writer::start_tag('div', array('class' => 'section-navigation navigationtitle'));
<         $sectiontitle .= html_writer::tag('span', $sectionnavlinks['previous'], array('class' => 'mdl-left'));
<         $sectiontitle .= html_writer::tag('span', $sectionnavlinks['next'], array('class' => 'mdl-right'));
<         // Title attributes
<         $classes = 'sectionname';
<         if (!$thissection->visible) {
<             $classes .= ' dimmed_text';
<         }
<         $sectionname = html_writer::tag('span', $this->section_title_without_link($thissection, $course));
<         $sectiontitle .= $this->output->heading($sectionname, 3, $classes);
< 
<         $sectiontitle .= html_writer::end_tag('div');
<         echo $sectiontitle;
< 
<         // Now the list of sections..
<         echo $this->start_section_list();
< 
<         echo $this->section_header($thissection, $course, true, $displaysection);
<         // Show completion help icon.
<         $completioninfo = new completion_info($course);
<         echo $completioninfo->display_help_icon();
< 
<         echo $this->courserenderer->course_section_cm_list($course, $thissection, $displaysection);
<         echo $this->courserenderer->course_section_add_cm_control($course, $displaysection, $displaysection);
<         echo $this->section_footer();
<         echo $this->end_section_list();
< 
<         // Display section bottom navigation.
<         $sectionbottomnav = '';
<         $sectionbottomnav .= html_writer::start_tag('div', array('class' => 'section-navigation mdl-bottom'));
<         $sectionbottomnav .= html_writer::tag('span', $sectionnavlinks['previous'], array('class' => 'mdl-left'));
<         $sectionbottomnav .= html_writer::tag('span', $sectionnavlinks['next'], array('class' => 'mdl-right'));
<         $sectionbottomnav .= html_writer::tag('div', $this->section_nav_selection($course, $sections, $displaysection),
<             array('class' => 'mdl-align'));
<         $sectionbottomnav .= html_writer::end_tag('div');
<         echo $sectionbottomnav;
< 
<         // Close single-section div.
<         echo html_writer::end_tag('div');
<     }
< 
<     /**
<      * Output the html for a multiple section page
<      *
<      * @param stdClass $course The course entry from DB
<      * @param array $sections (argument not used)
<      * @param array $mods (argument not used)
<      * @param array $modnames (argument not used)
<      * @param array $modnamesused (argument not used)
<      */
<     public function print_multiple_section_page($course, $sections, $mods, $modnames, $modnamesused) {
<         $modinfo = get_fast_modinfo($course);
<         $course = course_get_format($course)->get_course();
< 
<         $context = context_course::instance($course->id);
<         // Title with completion help icon.
<         $completioninfo = new completion_info($course);
<         echo $completioninfo->display_help_icon();
<         echo $this->output->heading($this->page_title(), 2, 'accesshide');
< 
<         // Copy activity clipboard..
<         echo $this->course_activity_clipboard($course, 0);
< 
<         // Now the list of sections..
<         echo $this->start_section_list();
<         $numsections = course_get_format($course)->get_last_section_number();
< 
<         foreach ($modinfo->get_section_info_all() as $section => $thissection) {
<             if ($section == 0) {
<                 // 0-section is displayed a little different then the others
<                 if ($thissection->summary or !empty($modinfo->sections[0]) or $this->page->user_is_editing()) {
<                     echo $this->section_header($thissection, $course, false, 0);
<                     echo $this->courserenderer->course_section_cm_list($course, $thissection, 0);
<                     echo $this->courserenderer->course_section_add_cm_control($course, 0, 0);
<                     echo $this->section_footer();
<                 }
<                 continue;
<             }
<             if ($section > $numsections) {
<                 // activities inside this section are 'orphaned', this section will be printed as 'stealth' below
<                 continue;
<             }
<             // Show the section if the user is permitted to access it, OR if it's not available
<             // but there is some available info text which explains the reason & should display,
<             // OR it is hidden but the course has a setting to display hidden sections as unavilable.
<             $showsection = $thissection->uservisible ||
<                     ($thissection->visible && !$thissection->available && !empty($thissection->availableinfo)) ||
<                     (!$thissection->visible && !$course->hiddensections);
<             if (!$showsection) {
<                 continue;
<             }
< 
<             if (!$this->page->user_is_editing() && $course->coursedisplay == COURSE_DISPLAY_MULTIPAGE) {
<                 // Display section summary only.
<                 echo $this->section_summary($thissection, $course, null);
<             } else {
<                 echo $this->section_header($thissection, $course, false, 0);
<                 if ($thissection->uservisible) {
<                     echo $this->courserenderer->course_section_cm_list($course, $thissection, 0);
<                     echo $this->courserenderer->course_section_add_cm_control($course, $section, 0);
<                 }
<                 echo $this->section_footer();
<             }
<         }
< 
<         if ($this->page->user_is_editing() and has_capability('moodle/course:update', $context)) {
<             // Print stealth sections if present.
<             foreach ($modinfo->get_section_info_all() as $section => $thissection) {
<                 if ($section <= $numsections or empty($modinfo->sections[$section])) {
<                     // this is not stealth section or it is empty
<                     continue;
<                 }
<                 echo $this->stealth_section_header($section);
<                 echo $this->courserenderer->course_section_cm_list($course, $thissection, 0);
<                 echo $this->stealth_section_footer();
<             }
< 
<             echo $this->end_section_list();
< 
<             echo $this->change_number_sections($course, 0);
<         } else {
<             echo $this->end_section_list();
<         }
< 
<     }
< 
<     /**
<      * Returns controls in the bottom of the page to increase/decrease number of sections
<      *
<      * @param stdClass $course
<      * @param int|null $sectionreturn
<      * @return string
<      */
<     protected function change_number_sections($course, $sectionreturn = null) {
<         $coursecontext = context_course::instance($course->id);
<         if (!has_capability('moodle/course:update', $coursecontext)) {
<             return '';
<         }
< 
<         $format = course_get_format($course);
<         $options = $format->get_format_options();
<         $maxsections = $format->get_max_sections();
<         $lastsection = $format->get_last_section_number();
<         $supportsnumsections = array_key_exists('numsections', $options);
< 
<         if ($supportsnumsections) {
<             // Current course format has 'numsections' option, which is very confusing and we suggest course format
<             // developers to get rid of it (see MDL-57769 on how to do it).
<             // Display "Increase section" / "Decrease section" links.
< 
<             echo html_writer::start_tag('div', array('id' => 'changenumsections', 'class' => 'mdl-right'));
< 
<             // Increase number of sections.
<             if ($lastsection < $maxsections) {
<                 $straddsection = get_string('increasesections', 'moodle');
<                 $url = new moodle_url('/course/changenumsections.php',
<                     array('courseid' => $course->id,
<                           'increase' => true,
<                           'sesskey' => sesskey()));
<                 $icon = $this->output->pix_icon('t/switch_plus', $straddsection);
<                 echo html_writer::link($url, $icon.get_accesshide($straddsection), array('class' => 'increase-sections'));
<             }
< 
<             if ($course->numsections > 0) {
<                 // Reduce number of sections sections.
<                 $strremovesection = get_string('reducesections', 'moodle');
<                 $url = new moodle_url('/course/changenumsections.php',
<                     array('courseid' => $course->id,
<                           'increase' => false,
<                           'sesskey' => sesskey()));
<                 $icon = $this->output->pix_icon('t/switch_minus', $strremovesection);
<                 echo html_writer::link($url, $icon.get_accesshide($strremovesection), array('class' => 'reduce-sections'));
<             }
< 
<             echo html_writer::end_tag('div');
< 
<         } else if (course_get_format($course)->uses_sections()) {
<             if ($lastsection >= $maxsections) {
<                 // Don't allow more sections if we already hit the limit.
<                 return;
<             }
<             // Current course format does not have 'numsections' option but it has multiple sections suppport.
<             // Display the "Add section" link that will insert a section in the end.
<             // Note to course format developers: inserting sections in the other positions should check both
<             // capabilities 'moodle/course:update' and 'moodle/course:movesections'.
<             echo html_writer::start_tag('div', array('id' => 'changenumsections', 'class' => 'mdl-right'));
<             if (get_string_manager()->string_exists('addsections', 'format_'.$course->format)) {
<                 $straddsections = get_string('addsections', 'format_'.$course->format);
<             } else {
<                 $straddsections = get_string('addsections');
<             }
<             $url = new moodle_url('/course/changenumsections.php',
<                 ['courseid' => $course->id, 'insertsection' => 0, 'sesskey' => sesskey()]);
<             if ($sectionreturn !== null) {
<                 $url->param('sectionreturn', $sectionreturn);
<             }
<             $icon = $this->output->pix_icon('t/add', '');
<             $newsections = $maxsections - $lastsection;
<             echo html_writer::link($url, $icon . $straddsections,
<                 array('class' => 'add-sections', 'data-add-sections' => $straddsections, 'data-new-sections' => $newsections));
<             echo html_writer::end_tag('div');
<         }
<     }
< 
<     /**
<      * Generate html for a section summary text
<      *
<      * @param stdClass $section The course_section entry from DB
<      * @return string HTML to output.
<      */
<     protected function format_summary_text($section) {
<         $context = context_course::instance($section->course);
<         $summarytext = file_rewrite_pluginfile_urls($section->summary, 'pluginfile.php',
<             $context->id, 'course', 'section', $section->id);
< 
<         $options = new stdClass();
<         $options->noclean = true;
<         $options->overflowdiv = true;
<         return format_text($summarytext, $section->summaryformat, $options);
<     }
< }