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renderer.php
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<?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/>.
/**
* Renderer for use with the course section and all the goodness that falls
* within it.
*
* This renderer should contain methods useful to courses, and categories.
*
* @package moodlecore
* @copyright 2010 Sam Hemelryk
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/**
* The core course renderer
*
* Can be retrieved with the following:
* $renderer = $PAGE->get_renderer('core','course');
*/
class core_course_renderer extends plugin_renderer_base {
const COURSECAT_SHOW_COURSES_NONE = 0; /* do not show courses at all */
const COURSECAT_SHOW_COURSES_COUNT = 5; /* do not show courses but show number of courses next to category name */
const COURSECAT_SHOW_COURSES_COLLAPSED = 10;
const COURSECAT_SHOW_COURSES_AUTO = 15; /* will choose between collapsed and expanded automatically */
const COURSECAT_SHOW_COURSES_EXPANDED = 20;
const COURSECAT_SHOW_COURSES_EXPANDED_WITH_CAT = 30;
const COURSECAT_TYPE_CATEGORY = 0;
const COURSECAT_TYPE_COURSE = 1;
/**
* A cache of strings
* @var stdClass
*/
protected $strings;
/**
* Whether a category content is being initially rendered with children. This is mainly used by the
* core_course_renderer::corsecat_tree() to render the appropriate action for the Expand/Collapse all link on
* page load.
* @var bool
*/
protected $categoryexpandedonload = false;
/**
* Override the constructor so that we can initialise the string cache
*
* @param moodle_page $page
* @param string $target
*/
public function __construct(moodle_page $page, $target) {
$this->strings = new stdClass;
$courseid = $page->course->id;
parent::__construct($page, $target);
}
/**
* @deprecated since 3.2
*/
protected function add_modchoosertoggle() {
throw new coding_exception('core_course_renderer::add_modchoosertoggle() can not be used anymore.');
}
/**
* Renders course info box.
*
* @param stdClass $course
* @return string
*/
public function course_info_box(stdClass $course) {
$content = '';
$content .= $this->output->box_start('generalbox info');
$chelper = new coursecat_helper();
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_EXPANDED);
$content .= $this->coursecat_coursebox($chelper, $course);
$content .= $this->output->box_end();
return $content;
}
/**
* Renderers a structured array of courses and categories into a nice XHTML tree structure.
*
* @deprecated since 2.5
*
* @param array $ignored argument ignored
* @return string
*/
final public function course_category_tree(array $ignored) {
debugging('Function core_course_renderer::course_category_tree() is deprecated, please use frontpage_combo_list()', DEBUG_DEVELOPER);
return $this->frontpage_combo_list();
}
/**
* Renderers a category for use with course_category_tree
*
* @deprecated since 2.5
*
* @param array $category
* @param int $depth
* @return string
*/
final protected function course_category_tree_category(stdClass $category, $depth=1) {
debugging('Function core_course_renderer::course_category_tree_category() is deprecated', DEBUG_DEVELOPER);
return '';
}
/**
* Render a modchooser.
*
* @param renderable $modchooser The chooser.
* @return string
*/
public function render_modchooser(renderable $modchooser) {
return $this->render_from_template('core_course/modchooser', $modchooser->export_for_template($this));
}
/**
* @deprecated since 3.9
*/
public function course_modchooser() {
throw new coding_exception('course_modchooser() can not be used anymore, please use course_activitychooser() instead.');
}
/**
* Build the HTML for the module chooser javascript popup.
*
* @param int $courseid The course id to fetch modules for.
* @return string
*/
public function course_activitychooser($courseid) {
if (!$this->page->requires->should_create_one_time_item_now('core_course_modchooser')) {
return '';
}
// Build an object of config settings that we can then hook into in the Activity Chooser.
$chooserconfig = (object) [
'tabmode' => get_config('core', 'activitychoosertabmode'),
];
$this->page->requires->js_call_amd('core_course/activitychooser', 'init', [$courseid, $chooserconfig]);
return '';
}
/**
* Build the HTML for a specified set of modules
*
* @param array $modules A set of modules as used by the
* course_modchooser_module function
* @return string The composed HTML for the module
*/
protected function course_modchooser_module_types($modules) {
debugging('Method core_course_renderer::course_modchooser_module_types() is deprecated, ' .
'see core_course_renderer::render_modchooser().', DEBUG_DEVELOPER);
return '';
}
/**
* Return the HTML for the specified module adding any required classes
*
* @param object $module An object containing the title, and link. An
* icon, and help text may optionally be specified. If the module
* contains subtypes in the types option, then these will also be
* displayed.
* @param array $classes Additional classes to add to the encompassing
* div element
* @return string The composed HTML for the module
*/
protected function course_modchooser_module($module, $classes = array('option')) {
debugging('Method core_course_renderer::course_modchooser_module() is deprecated, ' .
'see core_course_renderer::render_modchooser().', DEBUG_DEVELOPER);
return '';
}
protected function course_modchooser_title($title, $identifier = null) {
debugging('Method core_course_renderer::course_modchooser_title() is deprecated, ' .
'see core_course_renderer::render_modchooser().', DEBUG_DEVELOPER);
return '';
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function course_section_cm_edit_actions($actions, cm_info $mod = null, $displayoptions = array()) {
throw new coding_exception(
'course_section_cm_edit_actions can not be used any more. Please, use ' .
'core_courseformat\\output\\local\\content\\cm\\controlmenu instead.'
);
}
/**
* Renders HTML for the menus to add activities and resources to the current course
*
* Renders the ajax control (the link which when clicked produces the activity chooser modal). No noscript fallback.
*
* @param stdClass $course
* @param int $section relative section number (field course_sections.section)
* @param int $sectionreturn The section to link back to
* @param array $displayoptions additional display options, for example blocks add
* option 'inblock' => true, suggesting to display controls vertically
* @return string
*/
function course_section_add_cm_control($course, $section, $sectionreturn = null, $displayoptions = array()) {
// Check to see if user can add menus.
if (!has_capability('moodle/course:manageactivities', context_course::instance($course->id))
|| !$this->page->user_is_editing()) {
return '';
}
$data = [
'sectionid' => $section,
'sectionreturn' => $sectionreturn
];
$ajaxcontrol = $this->render_from_template('course/activitychooserbutton', $data);
// Load the JS for the modal.
$this->course_activitychooser($course->id);
return $ajaxcontrol;
}
/**
* Renders html to display a course search form
*
* @param string $value default value to populate the search field
* @return string
*/
public function course_search_form($value = '') {
$data = [
'action' => \core_search\manager::get_course_search_url(),
'btnclass' => 'btn-primary',
'inputname' => 'q',
'searchstring' => get_string('searchcourses'),
'hiddenfields' => (object) ['name' => 'areaids', 'value' => 'core_course-course'],
'query' => $value
];
return $this->render_from_template('core/search_input', $data);
}
/**
* @deprecated since Moodle 3.11
*/
public function course_section_cm_completion() {
throw new coding_exception(__FUNCTION__ . ' is deprecated. Use the activity_completion output component instead.');
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function is_cm_conditionally_hidden(cm_info $mod) {
throw new coding_exception(
'is_cm_conditionally_hidden can not be used any more. Please, use ' .
'\core_availability\info_module::is_available_for_all instead'
);
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function course_section_cm_name(cm_info $mod, $displayoptions = array()) {
throw new coding_exception(
'course_section_cm_name can not be used any more. Please, use ' .
'core_courseformat\\output\\local\\content\\cm\\cmname class instead.'
);
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
protected function course_section_cm_classes(cm_info $mod) {
throw new coding_exception(
'course_section_cm_classes can not be used any more. Now it is part of core_courseformat\\output\\local\\content\\cm'
);
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function course_section_cm_name_title(cm_info $mod, $displayoptions = array()) {
throw new coding_exception(
'course_section_cm_name_title can not be used any more. Please, use ' .
'core_courseformat\\output\\local\\cm\\title class instead'
);
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function course_section_cm_text(cm_info $mod, $displayoptions = array()) {
throw new coding_exception(
'course_section_cm_text can not be used any more. Now it is part of core_courseformat\\output\\local\\content\\cm'
);
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function availability_info($text, $additionalclasses = '') {
throw new coding_exception(
'availability_info can not be used any more. Please, use ' .
'core_courseformat\\output\\local\\content\\section\\availability instead'
);
}
/**
* @deprecated since 4.0 - please do not use this function any more.
*/
public function course_section_cm_availability(cm_info $mod, $displayoptions = array()) {
throw new coding_exception(
'course_section_cm_availability can not be used any more. Please, use ' .
'core_courseformat\\output\\local\\content\\cm\\availability instead'
);
}
/**
* @deprecated since 4.0 - use core_course output components or course_format::course_section_updated_cm_item instead.
*/
public function course_section_cm_list_item($course, &$completioninfo, cm_info $mod, $sectionreturn, $displayoptions = []) {
throw new coding_exception(
'course_section_cm_list_item can not be used any more. Please, use renderer course_section_updated_cm_item instead'
);
}
/**
* @deprecated since 4.0 - use core_course output components instead.
*/
public function course_section_cm($course, &$completioninfo, cm_info $mod, $sectionreturn, $displayoptions = []) {
throw new coding_exception(
'course_section_cm can not be used any more. Please, use core_courseformat\\output\\content\\cm output class instead'
);
}
/**
* Message displayed to the user when they try to access unavailable activity following URL
*
* This method is a very simplified version of {@link course_section_cm()} to be part of the error
* notification only. It also does not check if module is visible on course page or not.
*
* The message will be displayed inside notification!
*
* @param cm_info $cm
* @return string
*/
public function course_section_cm_unavailable_error_message(cm_info $cm) {
if ($cm->uservisible) {
return null;
}
if (!$cm->availableinfo) {
return get_string('activityiscurrentlyhidden');
}
$altname = get_accesshide(' ' . $cm->modfullname);
$name = html_writer::empty_tag('img', array('src' => $cm->get_icon_url(),
'class' => 'iconlarge activityicon', 'alt' => ' ', 'role' => 'presentation')) .
html_writer::tag('span', ' '.$cm->get_formatted_name() . $altname, array('class' => 'instancename'));
$formattedinfo = \core_availability\info::format_info($cm->availableinfo, $cm->get_course());
return html_writer::div($name, 'activityinstance-error') .
html_writer::div($formattedinfo, 'availabilityinfo-error');
}
/**
* @deprecated since 4.0 - use core_course output components instead.
*/
public function course_section_cm_list($course, $section, $sectionreturn = null, $displayoptions = []) {
throw new coding_exception(
'course_section_cm_list can not be used any more. Please, use ' .
'core_courseformat\\output\\local\\content\\section\\cmlist class instead'
);
}
/**
* Displays a custom list of courses with paging bar if necessary
*
* If $paginationurl is specified but $totalcount is not, the link 'View more'
* appears under the list.
*
* If both $paginationurl and $totalcount are specified, and $totalcount is
* bigger than count($courses), a paging bar is displayed above and under the
* courses list.
*
* @param array $courses array of course records (or instances of core_course_list_element) to show on this page
* @param bool $showcategoryname whether to add category name to the course description
* @param string $additionalclasses additional CSS classes to add to the div.courses
* @param moodle_url $paginationurl url to view more or url to form links to the other pages in paging bar
* @param int $totalcount total number of courses on all pages, if omitted $paginationurl will be displayed as 'View more' link
* @param int $page current page number (defaults to 0 referring to the first page)
* @param int $perpage number of records per page (defaults to $CFG->coursesperpage)
* @return string
*/
public function courses_list($courses, $showcategoryname = false, $additionalclasses = null, $paginationurl = null, $totalcount = null, $page = 0, $perpage = null) {
global $CFG;
// create instance of coursecat_helper to pass display options to function rendering courses list
$chelper = new coursecat_helper();
if ($showcategoryname) {
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_EXPANDED_WITH_CAT);
} else {
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_EXPANDED);
}
if ($totalcount !== null && $paginationurl !== null) {
// add options to display pagination
if ($perpage === null) {
$perpage = $CFG->coursesperpage;
}
$chelper->set_courses_display_options(array(
'limit' => $perpage,
'offset' => ((int)$page) * $perpage,
'paginationurl' => $paginationurl,
));
} else if ($paginationurl !== null) {
// add options to display 'View more' link
$chelper->set_courses_display_options(array('viewmoreurl' => $paginationurl));
$totalcount = count($courses) + 1; // has to be bigger than count($courses) otherwise link will not be displayed
}
$chelper->set_attributes(array('class' => $additionalclasses));
$content = $this->coursecat_courses($chelper, $courses, $totalcount);
return $content;
}
/**
* Returns HTML to display course name.
*
* @param coursecat_helper $chelper
* @param core_course_list_element $course
* @return string
*/
protected function course_name(coursecat_helper $chelper, core_course_list_element $course): string {
$content = '';
if ($chelper->get_show_courses() >= self::COURSECAT_SHOW_COURSES_EXPANDED) {
$nametag = 'h3';
} else {
$nametag = 'div';
}
$coursename = $chelper->get_course_formatted_name($course);
$coursenamelink = html_writer::link(new moodle_url('/course/view.php', ['id' => $course->id]),
$coursename, ['class' => $course->visible ? 'aalink' : 'aalink dimmed']);
$content .= html_writer::tag($nametag, $coursenamelink, ['class' => 'coursename']);
// If we display course in collapsed form but the course has summary or course contacts, display the link to the info page.
$content .= html_writer::start_tag('div', ['class' => 'moreinfo']);
if ($chelper->get_show_courses() < self::COURSECAT_SHOW_COURSES_EXPANDED) {
if ($course->has_summary() || $course->has_course_contacts() || $course->has_course_overviewfiles()
|| $course->has_custom_fields()) {
$url = new moodle_url('/course/info.php', ['id' => $course->id]);
$image = $this->output->pix_icon('i/info', $this->strings->summary);
$content .= html_writer::link($url, $image, ['title' => $this->strings->summary]);
// Make sure JS file to expand course content is included.
$this->coursecat_include_js();
}
}
$content .= html_writer::end_tag('div');
return $content;
}
/**
* Returns HTML to display course enrolment icons.
*
* @param core_course_list_element $course
* @return string
*/
protected function course_enrolment_icons(core_course_list_element $course): string {
$content = '';
if ($icons = enrol_get_course_info_icons($course)) {
$content .= html_writer::start_tag('div', ['class' => 'enrolmenticons']);
foreach ($icons as $icon) {
$content .= $this->render($icon);
}
$content .= html_writer::end_tag('div');
}
return $content;
}
/**
* Displays one course in the list of courses.
*
* This is an internal function, to display an information about just one course
* please use {@link core_course_renderer::course_info_box()}
*
* @param coursecat_helper $chelper various display options
* @param core_course_list_element|stdClass $course
* @param string $additionalclasses additional classes to add to the main <div> tag (usually
* depend on the course position in list - first/last/even/odd)
* @return string
*/
protected function coursecat_coursebox(coursecat_helper $chelper, $course, $additionalclasses = '') {
if (!isset($this->strings->summary)) {
$this->strings->summary = get_string('summary');
}
if ($chelper->get_show_courses() <= self::COURSECAT_SHOW_COURSES_COUNT) {
return '';
}
if ($course instanceof stdClass) {
$course = new core_course_list_element($course);
}
$content = '';
$classes = trim('coursebox clearfix '. $additionalclasses);
if ($chelper->get_show_courses() < self::COURSECAT_SHOW_COURSES_EXPANDED) {
$classes .= ' collapsed';
}
// .coursebox
$content .= html_writer::start_tag('div', array(
'class' => $classes,
'data-courseid' => $course->id,
'data-type' => self::COURSECAT_TYPE_COURSE,
));
$content .= html_writer::start_tag('div', array('class' => 'info'));
$content .= $this->course_name($chelper, $course);
$content .= $this->course_enrolment_icons($course);
$content .= html_writer::end_tag('div');
$content .= html_writer::start_tag('div', array('class' => 'content'));
$content .= $this->coursecat_coursebox_content($chelper, $course);
$content .= html_writer::end_tag('div');
$content .= html_writer::end_tag('div'); // .coursebox
return $content;
}
/**
* Returns HTML to display course summary.
*
* @param coursecat_helper $chelper
* @param core_course_list_element $course
* @return string
*/
protected function course_summary(coursecat_helper $chelper, core_course_list_element $course): string {
$content = '';
if ($course->has_summary()) {
$content .= html_writer::start_tag('div', ['class' => 'summary']);
$content .= $chelper->get_course_formatted_summary($course,
array('overflowdiv' => true, 'noclean' => true, 'para' => false));
$content .= html_writer::end_tag('div');
}
return $content;
}
/**
* Returns HTML to display course contacts.
*
* @param core_course_list_element $course
* @return string
*/
protected function course_contacts(core_course_list_element $course) {
$content = '';
if ($course->has_course_contacts()) {
$content .= html_writer::start_tag('ul', ['class' => 'teachers']);
foreach ($course->get_course_contacts() as $coursecontact) {
$rolenames = array_map(function ($role) {
return $role->displayname;
}, $coursecontact['roles']);
$name = html_writer::tag('span', implode(", ", $rolenames).': ', ['class' => 'font-weight-bold']);
$name .= html_writer::link(
\core_user::get_profile_url($coursecontact['user'], context_system::instance()),
$coursecontact['username']
);
$content .= html_writer::tag('li', $name);
}
$content .= html_writer::end_tag('ul');
}
return $content;
}
/**
* Returns HTML to display course overview files.
*
* @param core_course_list_element $course
* @return string
*/
protected function course_overview_files(core_course_list_element $course): string {
global $CFG;
$contentimages = $contentfiles = '';
foreach ($course->get_course_overviewfiles() as $file) {
$isimage = $file->is_valid_image();
$url = moodle_url::make_file_url("$CFG->wwwroot/pluginfile.php",
'/' . $file->get_contextid() . '/' . $file->get_component() . '/' .
$file->get_filearea() . $file->get_filepath() . $file->get_filename(), !$isimage);
if ($isimage) {
$contentimages .= html_writer::tag('div',
html_writer::empty_tag('img', ['src' => $url, 'alt' => '']),
['class' => 'courseimage']);
} else {
$image = $this->output->pix_icon(file_file_icon($file), $file->get_filename(), 'moodle');
$filename = html_writer::tag('span', $image, ['class' => 'fp-icon']).
html_writer::tag('span', $file->get_filename(), ['class' => 'fp-filename']);
$contentfiles .= html_writer::tag('span',
html_writer::link($url, $filename),
['class' => 'coursefile fp-filename-icon text-break']);
}
}
return $contentimages . $contentfiles;
}
/**
* Returns HTML to display course category name.
*
* @param coursecat_helper $chelper
* @param core_course_list_element $course
* @return string
*/
protected function course_category_name(coursecat_helper $chelper, core_course_list_element $course): string {
$content = '';
// Display course category if necessary (for example in search results).
if ($chelper->get_show_courses() == self::COURSECAT_SHOW_COURSES_EXPANDED_WITH_CAT) {
if ($cat = core_course_category::get($course->category, IGNORE_MISSING)) {
$content .= html_writer::start_tag('div', ['class' => 'coursecat']);
$content .= html_writer::tag('span', get_string('category').': ', ['class' => 'font-weight-bold']);
$content .= html_writer::link(new moodle_url('/course/index.php', ['categoryid' => $cat->id]),
$cat->get_formatted_name(), ['class' => $cat->visible ? '' : 'dimmed']);
$content .= html_writer::end_tag('div');
}
}
return $content;
}
/**
* Returns HTML to display course custom fields.
*
* @param core_course_list_element $course
* @return string
*/
protected function course_custom_fields(core_course_list_element $course): string {
$content = '';
if ($course->has_custom_fields()) {
$handler = core_course\customfield\course_handler::create();
$customfields = $handler->display_custom_fields_data($course->get_custom_fields());
$content .= \html_writer::tag('div', $customfields, ['class' => 'customfields-container']);
}
return $content;
}
/**
* Returns HTML to display course content (summary, course contacts and optionally category name)
*
* This method is called from coursecat_coursebox() and may be re-used in AJAX
*
* @param coursecat_helper $chelper various display options
* @param stdClass|core_course_list_element $course
* @return string
*/
protected function coursecat_coursebox_content(coursecat_helper $chelper, $course) {
if ($chelper->get_show_courses() < self::COURSECAT_SHOW_COURSES_EXPANDED) {
return '';
}
if ($course instanceof stdClass) {
$course = new core_course_list_element($course);
}
$content = \html_writer::start_tag('div', ['class' => 'd-flex']);
$content .= $this->course_overview_files($course);
$content .= \html_writer::start_tag('div', ['class' => 'flex-grow-1']);
$content .= $this->course_summary($chelper, $course);
$content .= $this->course_contacts($course);
$content .= $this->course_category_name($chelper, $course);
$content .= $this->course_custom_fields($course);
$content .= \html_writer::end_tag('div');
$content .= \html_writer::end_tag('div');
return $content;
}
/**
* Renders the list of courses
*
* This is internal function, please use {@link core_course_renderer::courses_list()} or another public
* method from outside of the class
*
* If list of courses is specified in $courses; the argument $chelper is only used
* to retrieve display options and attributes, only methods get_show_courses(),
* get_courses_display_option() and get_and_erase_attributes() are called.
*
* @param coursecat_helper $chelper various display options
* @param array $courses the list of courses to display
* @param int|null $totalcount total number of courses (affects display mode if it is AUTO or pagination if applicable),
* defaulted to count($courses)
* @return string
*/
protected function coursecat_courses(coursecat_helper $chelper, $courses, $totalcount = null) {
global $CFG;
if ($totalcount === null) {
$totalcount = count($courses);
}
if (!$totalcount) {
// Courses count is cached during courses retrieval.
return '';
}
if ($chelper->get_show_courses() == self::COURSECAT_SHOW_COURSES_AUTO) {
// In 'auto' course display mode we analyse if number of courses is more or less than $CFG->courseswithsummarieslimit
if ($totalcount <= $CFG->courseswithsummarieslimit) {
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_EXPANDED);
} else {
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_COLLAPSED);
}
}
// prepare content of paging bar if it is needed
$paginationurl = $chelper->get_courses_display_option('paginationurl');
$paginationallowall = $chelper->get_courses_display_option('paginationallowall');
if ($totalcount > count($courses)) {
// there are more results that can fit on one page
if ($paginationurl) {
// the option paginationurl was specified, display pagingbar
$perpage = $chelper->get_courses_display_option('limit', $CFG->coursesperpage);
$page = $chelper->get_courses_display_option('offset') / $perpage;
$pagingbar = $this->paging_bar($totalcount, $page, $perpage,
$paginationurl->out(false, array('perpage' => $perpage)));
if ($paginationallowall) {
$pagingbar .= html_writer::tag('div', html_writer::link($paginationurl->out(false, array('perpage' => 'all')),
get_string('showall', '', $totalcount)), array('class' => 'paging paging-showall'));
}
} else if ($viewmoreurl = $chelper->get_courses_display_option('viewmoreurl')) {
// the option for 'View more' link was specified, display more link
$viewmoretext = $chelper->get_courses_display_option('viewmoretext', new lang_string('viewmore'));
$morelink = html_writer::tag(
'div',
html_writer::link($viewmoreurl, $viewmoretext, ['class' => 'btn btn-secondary']),
['class' => 'paging paging-morelink']
);
}
} else if (($totalcount > $CFG->coursesperpage) && $paginationurl && $paginationallowall) {
// there are more than one page of results and we are in 'view all' mode, suggest to go back to paginated view mode
$pagingbar = html_writer::tag('div', html_writer::link($paginationurl->out(false, array('perpage' => $CFG->coursesperpage)),
get_string('showperpage', '', $CFG->coursesperpage)), array('class' => 'paging paging-showperpage'));
}
// display list of courses
$attributes = $chelper->get_and_erase_attributes('courses');
$content = html_writer::start_tag('div', $attributes);
if (!empty($pagingbar)) {
$content .= $pagingbar;
}
$coursecount = 0;
foreach ($courses as $course) {
$coursecount ++;
$classes = ($coursecount%2) ? 'odd' : 'even';
if ($coursecount == 1) {
$classes .= ' first';
}
if ($coursecount >= count($courses)) {
$classes .= ' last';
}
$content .= $this->coursecat_coursebox($chelper, $course, $classes);
}
if (!empty($pagingbar)) {
$content .= $pagingbar;
}
if (!empty($morelink)) {
$content .= $morelink;
}
$content .= html_writer::end_tag('div'); // .courses
return $content;
}
/**
* Renders the list of subcategories in a category
*
* @param coursecat_helper $chelper various display options
* @param core_course_category $coursecat
* @param int $depth depth of the category in the current tree
* @return string
*/
protected function coursecat_subcategories(coursecat_helper $chelper, $coursecat, $depth) {
global $CFG;
$subcategories = array();
if (!$chelper->get_categories_display_option('nodisplay')) {
$subcategories = $coursecat->get_children($chelper->get_categories_display_options());
}
$totalcount = $coursecat->get_children_count();
if (!$totalcount) {
// Note that we call core_course_category::get_children_count() AFTER core_course_category::get_children()
// to avoid extra DB requests.
// Categories count is cached during children categories retrieval.
return '';
}
// prepare content of paging bar or more link if it is needed
$paginationurl = $chelper->get_categories_display_option('paginationurl');
$paginationallowall = $chelper->get_categories_display_option('paginationallowall');
if ($totalcount > count($subcategories)) {
if ($paginationurl) {
// the option 'paginationurl was specified, display pagingbar
$perpage = $chelper->get_categories_display_option('limit', $CFG->coursesperpage);
$page = $chelper->get_categories_display_option('offset') / $perpage;
$pagingbar = $this->paging_bar($totalcount, $page, $perpage,
$paginationurl->out(false, array('perpage' => $perpage)));
if ($paginationallowall) {
$pagingbar .= html_writer::tag('div', html_writer::link($paginationurl->out(false, array('perpage' => 'all')),
get_string('showall', '', $totalcount)), array('class' => 'paging paging-showall'));
}
} else if ($viewmoreurl = $chelper->get_categories_display_option('viewmoreurl')) {
// the option 'viewmoreurl' was specified, display more link (if it is link to category view page, add category id)
if ($viewmoreurl->compare(new moodle_url('/course/index.php'), URL_MATCH_BASE)) {
$viewmoreurl->param('categoryid', $coursecat->id);
}
$viewmoretext = $chelper->get_categories_display_option('viewmoretext', new lang_string('viewmore'));
$morelink = html_writer::tag('div', html_writer::link($viewmoreurl, $viewmoretext),
array('class' => 'paging paging-morelink'));
}
} else if (($totalcount > $CFG->coursesperpage) && $paginationurl && $paginationallowall) {
// there are more than one page of results and we are in 'view all' mode, suggest to go back to paginated view mode
$pagingbar = html_writer::tag('div', html_writer::link($paginationurl->out(false, array('perpage' => $CFG->coursesperpage)),
get_string('showperpage', '', $CFG->coursesperpage)), array('class' => 'paging paging-showperpage'));
}
// display list of subcategories
$content = html_writer::start_tag('div', array('class' => 'subcategories'));
if (!empty($pagingbar)) {
$content .= $pagingbar;
}
foreach ($subcategories as $subcategory) {
$content .= $this->coursecat_category($chelper, $subcategory, $depth + 1);
}
if (!empty($pagingbar)) {
$content .= $pagingbar;
}
if (!empty($morelink)) {
$content .= $morelink;
}
$content .= html_writer::end_tag('div');
return $content;
}
/**
* Make sure that javascript file for AJAX expanding of courses and categories content is included
*/
protected function coursecat_include_js() {
if (!$this->page->requires->should_create_one_time_item_now('core_course_categoryexpanderjsinit')) {
return;
}
// We must only load this module once.
$this->page->requires->yui_module('moodle-course-categoryexpander',
'Y.Moodle.course.categoryexpander.init');
}
/**
* Returns HTML to display the subcategories and courses in the given category
*
* This method is re-used by AJAX to expand content of not loaded category
*
* @param coursecat_helper $chelper various display options
* @param core_course_category $coursecat
* @param int $depth depth of the category in the current tree
* @return string
*/
protected function coursecat_category_content(coursecat_helper $chelper, $coursecat, $depth) {
$content = '';
// Subcategories
$content .= $this->coursecat_subcategories($chelper, $coursecat, $depth);
// AUTO show courses: Courses will be shown expanded if this is not nested category,
// and number of courses no bigger than $CFG->courseswithsummarieslimit.
$showcoursesauto = $chelper->get_show_courses() == self::COURSECAT_SHOW_COURSES_AUTO;
if ($showcoursesauto && $depth) {
// this is definitely collapsed mode
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_COLLAPSED);
}
// Courses
if ($chelper->get_show_courses() > core_course_renderer::COURSECAT_SHOW_COURSES_COUNT) {
$courses = array();
if (!$chelper->get_courses_display_option('nodisplay')) {
$courses = $coursecat->get_courses($chelper->get_courses_display_options());
}
if ($viewmoreurl = $chelper->get_courses_display_option('viewmoreurl')) {
// the option for 'View more' link was specified, display more link (if it is link to category view page, add category id)
if ($viewmoreurl->compare(new moodle_url('/course/index.php'), URL_MATCH_BASE)) {
$chelper->set_courses_display_option('viewmoreurl', new moodle_url($viewmoreurl, array('categoryid' => $coursecat->id)));
}
}
$content .= $this->coursecat_courses($chelper, $courses, $coursecat->get_courses_count());
}
if ($showcoursesauto) {
// restore the show_courses back to AUTO
$chelper->set_show_courses(self::COURSECAT_SHOW_COURSES_AUTO);
}
return $content;
}
/**
* Returns HTML to display a course category as a part of a tree
*
* This is an internal function, to display a particular category and all its contents
* use {@link core_course_renderer::course_category()}
*
* @param coursecat_helper $chelper various display options
* @param core_course_category $coursecat
* @param int $depth depth of this category in the current tree
* @return string
*/
protected function coursecat_category(coursecat_helper $chelper, $coursecat, $depth) {
// open category tag
$classes = array('category');
if (empty($coursecat->visible)) {
$classes[] = 'dimmed_category';
}
if ($chelper->get_subcat_depth() > 0 && $depth >= $chelper->get_subcat_depth()) {
// do not load content
$categorycontent = '';
$classes[] = 'notloaded';
if ($coursecat->get_children_count() ||
($chelper->get_show_courses() >= self::COURSECAT_SHOW_COURSES_COLLAPSED && $coursecat->get_courses_count())) {
$classes[] = 'with_children';
$classes[] = 'collapsed';
}
} else {
// load category content
$categorycontent = $this->coursecat_category_content($chelper, $coursecat, $depth);
$classes[] = 'loaded';
if (!empty($categorycontent)) {
$classes[] = 'with_children';
// Category content loaded with children.
$this->categoryexpandedonload = true;
}
}
// Make sure JS file to expand category content is included.
$this->coursecat_include_js();
$content = html_writer::start_tag('div', array(
'class' => join(' ', $classes),
'data-categoryid' => $coursecat->id,
'data-depth' => $depth,
'data-showcourses' => $chelper->get_show_courses(),
'data-type' => self::COURSECAT_TYPE_CATEGORY,
));
// category name
$categoryname = $coursecat->get_formatted_name();
$categoryname = html_writer::link(new moodle_url('/course/index.php',
array('categoryid' => $coursecat->id)),
$categoryname);
if ($chelper->get_show_courses() == self::COURSECAT_SHOW_COURSES_COUNT
&& ($coursescount = $coursecat->get_courses_count())) {
$categoryname .= html_writer::tag('span', ' ('. $coursescount.')',
array('title' => get_string('numberofcourses'), 'class' => 'numberofcourse'));
}
$content .= html_writer::start_tag('div', array('class' => 'info'));
$content .= html_writer::tag(($depth > 1) ? 'h4' : 'h3', $categoryname, array('class' => 'categoryname aabtn'));
$content .= html_writer::end_tag('div'); // .info
// add category content to the output
$content .= html_writer::tag('div', $categorycontent, array('class' => 'content'));
$content .= html_writer::end_tag('div'); // .category
// Return the course category tree HTML
return $content;
}
/**
* Returns HTML to display a tree of subcategories and courses in the given category
*
* @param coursecat_helper $chelper various display options
* @param core_course_category $coursecat top category (this category's name and description will NOT be added to the tree)
* @return string
*/
protected function coursecat_tree(coursecat_helper $chelper, $coursecat) {
// Reset the category expanded flag for this course category tree first.
$this->categoryexpandedonload = false;
$categorycontent = $this->coursecat_category_content($chelper, $coursecat, 0);
if (empty($categorycontent)) {