2 // This file is part of Moodle - http://moodle.org/
4 // Moodle is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // Moodle is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
18 * Classes for rendering HTML output for Moodle.
20 * Please see {@link http://docs.moodle.org/en/Developement:How_Moodle_outputs_HTML}
23 * Included in this file are the primary renderer classes:
24 * - renderer_base: The renderer outline class that all renderers
25 * should inherit from.
26 * - core_renderer: The standard HTML renderer.
27 * - core_renderer_cli: An adaption of the standard renderer for CLI scripts.
28 * - core_renderer_ajax: An adaption of the standard renderer for AJAX scripts.
29 * - plugin_renderer_base: A renderer class that should be extended by all
34 * @copyright 2009 Tim Hunt
35 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
38 defined('MOODLE_INTERNAL') || die();
41 * Simple base class for Moodle renderers.
43 * Tracks the xhtml_container_stack to use, which is passed in in the constructor.
45 * Also has methods to facilitate generating HTML output.
47 * @copyright 2009 Tim Hunt
48 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
55 * @var xhtml_container_stack The xhtml_container_stack to use.
57 protected $opencontainers;
60 * @var moodle_page The Moodle page the renderer has been created to assist with.
65 * @var string The requested rendering target.
70 * @var Mustache_Engine $mustache The mustache template compiler
75 * Return an instance of the mustache class.
78 * @return Mustache_Engine
80 protected function get_mustache() {
83 if ($this->mustache === null) {
84 $themename = $this->page->theme->name;
85 $themerev = theme_get_revision();
87 $cachedir = make_localcache_directory("mustache/$themerev/$themename");
89 $loader = new \core\output\mustache_filesystem_loader();
90 $stringhelper = new \core\output\mustache_string_helper();
91 $quotehelper = new \core\output\mustache_quote_helper();
92 $jshelper = new \core\output\mustache_javascript_helper($this->page);
93 $pixhelper = new \core\output\mustache_pix_helper($this);
94 $shortentexthelper = new \core\output\mustache_shorten_text_helper();
95 $userdatehelper = new \core\output\mustache_user_date_helper();
97 // We only expose the variables that are exposed to JS templates.
98 $safeconfig = $this->page->requires->get_config_for_javascript($this->page, $this);
100 $helpers = array('config' => $safeconfig,
101 'str' => array($stringhelper, 'str'),
102 'quote' => array($quotehelper, 'quote'),
103 'js' => array($jshelper, 'help'),
104 'pix' => array($pixhelper, 'pix'),
105 'shortentext' => array($shortentexthelper, 'shorten'),
106 'userdate' => array($userdatehelper, 'transform'),
109 $this->mustache = new Mustache_Engine(array(
110 'cache' => $cachedir,
113 'helpers' => $helpers,
114 'pragmas' => [Mustache_Engine::PRAGMA_BLOCKS]));
118 return $this->mustache;
125 * The constructor takes two arguments. The first is the page that the renderer
126 * has been created to assist with, and the second is the target.
127 * The target is an additional identifier that can be used to load different
128 * renderers for different options.
130 * @param moodle_page $page the page we are doing output for.
131 * @param string $target one of rendering target constants
133 public function __construct(moodle_page $page, $target) {
134 $this->opencontainers = $page->opencontainers;
136 $this->target = $target;
140 * Renders a template by name with the given context.
142 * The provided data needs to be array/stdClass made up of only simple types.
143 * Simple types are array,stdClass,bool,int,float,string
146 * @param array|stdClass $context Context containing data for the template.
147 * @return string|boolean
149 public function render_from_template($templatename, $context) {
150 static $templatecache = array();
151 $mustache = $this->get_mustache();
154 // Grab a copy of the existing helper to be restored later.
155 $uniqidhelper = $mustache->getHelper('uniqid');
156 } catch (Mustache_Exception_UnknownHelperException $e) {
157 // Helper doesn't exist.
158 $uniqidhelper = null;
161 // Provide 1 random value that will not change within a template
162 // but will be different from template to template. This is useful for
163 // e.g. aria attributes that only work with id attributes and must be
165 $mustache->addHelper('uniqid', new \core\output\mustache_uniqid_helper());
166 if (isset($templatecache[$templatename])) {
167 $template = $templatecache[$templatename];
170 $template = $mustache->loadTemplate($templatename);
171 $templatecache[$templatename] = $template;
172 } catch (Mustache_Exception_UnknownTemplateException $e) {
173 throw new moodle_exception('Unknown template: ' . $templatename);
177 $renderedtemplate = trim($template->render($context));
179 // If we had an existing uniqid helper then we need to restore it to allow
180 // handle nested calls of render_from_template.
182 $mustache->addHelper('uniqid', $uniqidhelper);
185 return $renderedtemplate;
190 * Returns rendered widget.
192 * The provided widget needs to be an object that extends the renderable
194 * If will then be rendered by a method based upon the classname for the widget.
195 * For instance a widget of class `crazywidget` will be rendered by a protected
196 * render_crazywidget method of this renderer.
198 * @param renderable $widget instance with renderable interface
201 public function render(renderable $widget) {
202 $classname = get_class($widget);
204 $classname = preg_replace('/^.*\\\/', '', $classname);
205 // Remove _renderable suffixes
206 $classname = preg_replace('/_renderable$/', '', $classname);
208 $rendermethod = 'render_'.$classname;
209 if (method_exists($this, $rendermethod)) {
210 return $this->$rendermethod($widget);
212 throw new coding_exception('Can not render widget, renderer method ('.$rendermethod.') not found.');
216 * Adds a JS action for the element with the provided id.
218 * This method adds a JS event for the provided component action to the page
219 * and then returns the id that the event has been attached to.
220 * If no id has been provided then a new ID is generated by {@link html_writer::random_id()}
222 * @param component_action $action
224 * @return string id of element, either original submitted or random new if not supplied
226 public function add_action_handler(component_action $action, $id = null) {
228 $id = html_writer::random_id($action->event);
230 $this->page->requires->event_handler("#$id", $action->event, $action->jsfunction, $action->jsfunctionargs);
235 * Returns true is output has already started, and false if not.
237 * @return boolean true if the header has been printed.
239 public function has_started() {
240 return $this->page->state >= moodle_page::STATE_IN_BODY;
244 * Given an array or space-separated list of classes, prepares and returns the HTML class attribute value
246 * @param mixed $classes Space-separated string or array of classes
247 * @return string HTML class attribute value
249 public static function prepare_classes($classes) {
250 if (is_array($classes)) {
251 return implode(' ', array_unique($classes));
257 * Return the direct URL for an image from the pix folder.
259 * Use this function sparingly and never for icons. For icons use pix_icon or the pix helper in a mustache template.
261 * @deprecated since Moodle 3.3
262 * @param string $imagename the name of the icon.
263 * @param string $component specification of one plugin like in get_string()
266 public function pix_url($imagename, $component = 'moodle') {
267 debugging('pix_url is deprecated. Use image_url for images and pix_icon for icons.', DEBUG_DEVELOPER);
268 return $this->page->theme->image_url($imagename, $component);
272 * Return the moodle_url for an image.
274 * The exact image location and extension is determined
275 * automatically by searching for gif|png|jpg|jpeg, please
276 * note there can not be diferent images with the different
277 * extension. The imagename is for historical reasons
278 * a relative path name, it may be changed later for core
279 * images. It is recommended to not use subdirectories
280 * in plugin and theme pix directories.
282 * There are three types of images:
283 * 1/ theme images - stored in theme/mytheme/pix/,
284 * use component 'theme'
285 * 2/ core images - stored in /pix/,
286 * overridden via theme/mytheme/pix_core/
287 * 3/ plugin images - stored in mod/mymodule/pix,
288 * overridden via theme/mytheme/pix_plugins/mod/mymodule/,
289 * example: image_url('comment', 'mod_glossary')
291 * @param string $imagename the pathname of the image
292 * @param string $component full plugin name (aka component) or 'theme'
295 public function image_url($imagename, $component = 'moodle') {
296 return $this->page->theme->image_url($imagename, $component);
300 * Return the site's logo URL, if any.
302 * @param int $maxwidth The maximum width, or null when the maximum width does not matter.
303 * @param int $maxheight The maximum height, or null when the maximum height does not matter.
304 * @return moodle_url|false
306 public function get_logo_url($maxwidth = null, $maxheight = 200) {
308 $logo = get_config('core_admin', 'logo');
313 // 200px high is the default image size which should be displayed at 100px in the page to account for retina displays.
314 // It's not worth the overhead of detecting and serving 2 different images based on the device.
316 // Hide the requested size in the file path.
317 $filepath = ((int) $maxwidth . 'x' . (int) $maxheight) . '/';
319 // Use $CFG->themerev to prevent browser caching when the file changes.
320 return moodle_url::make_pluginfile_url(context_system::instance()->id, 'core_admin', 'logo', $filepath,
321 theme_get_revision(), $logo);
325 * Return the site's compact logo URL, if any.
327 * @param int $maxwidth The maximum width, or null when the maximum width does not matter.
328 * @param int $maxheight The maximum height, or null when the maximum height does not matter.
329 * @return moodle_url|false
331 public function get_compact_logo_url($maxwidth = 100, $maxheight = 100) {
333 $logo = get_config('core_admin', 'logocompact');
338 // Hide the requested size in the file path.
339 $filepath = ((int) $maxwidth . 'x' . (int) $maxheight) . '/';
341 // Use $CFG->themerev to prevent browser caching when the file changes.
342 return moodle_url::make_pluginfile_url(context_system::instance()->id, 'core_admin', 'logocompact', $filepath,
343 theme_get_revision(), $logo);
350 * Basis for all plugin renderers.
352 * @copyright Petr Skoda (skodak)
353 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
358 class plugin_renderer_base extends renderer_base {
361 * @var renderer_base|core_renderer A reference to the current renderer.
362 * The renderer provided here will be determined by the page but will in 90%
363 * of cases by the {@link core_renderer}
368 * Constructor method, calls the parent constructor
370 * @param moodle_page $page
371 * @param string $target one of rendering target constants
373 public function __construct(moodle_page $page, $target) {
374 if (empty($target) && $page->pagelayout === 'maintenance') {
375 // If the page is using the maintenance layout then we're going to force the target to maintenance.
376 // This way we'll get a special maintenance renderer that is designed to block access to API's that are likely
377 // unavailable for this page layout.
378 $target = RENDERER_TARGET_MAINTENANCE;
380 $this->output = $page->get_renderer('core', null, $target);
381 parent::__construct($page, $target);
385 * Renders the provided widget and returns the HTML to display it.
387 * @param renderable $widget instance with renderable interface
390 public function render(renderable $widget) {
391 $classname = get_class($widget);
393 $classname = preg_replace('/^.*\\\/', '', $classname);
394 // Keep a copy at this point, we may need to look for a deprecated method.
395 $deprecatedmethod = 'render_'.$classname;
396 // Remove _renderable suffixes
397 $classname = preg_replace('/_renderable$/', '', $classname);
399 $rendermethod = 'render_'.$classname;
400 if (method_exists($this, $rendermethod)) {
401 return $this->$rendermethod($widget);
403 if ($rendermethod !== $deprecatedmethod && method_exists($this, $deprecatedmethod)) {
404 // This is exactly where we don't want to be.
405 // If you have arrived here you have a renderable component within your plugin that has the name
406 // blah_renderable, and you have a render method render_blah_renderable on your plugin.
407 // In 2.8 we revamped output, as part of this change we changed slightly how renderables got rendered
408 // and the _renderable suffix now gets removed when looking for a render method.
409 // You need to change your renderers render_blah_renderable to render_blah.
410 // Until you do this it will not be possible for a theme to override the renderer to override your method.
411 // Please do it ASAP.
412 static $debugged = array();
413 if (!isset($debugged[$deprecatedmethod])) {
414 debugging(sprintf('Deprecated call. Please rename your renderables render method from %s to %s.',
415 $deprecatedmethod, $rendermethod), DEBUG_DEVELOPER);
416 $debugged[$deprecatedmethod] = true;
418 return $this->$deprecatedmethod($widget);
420 // pass to core renderer if method not found here
421 return $this->output->render($widget);
425 * Magic method used to pass calls otherwise meant for the standard renderer
426 * to it to ensure we don't go causing unnecessary grief.
428 * @param string $method
429 * @param array $arguments
432 public function __call($method, $arguments) {
433 if (method_exists('renderer_base', $method)) {
434 throw new coding_exception('Protected method called against '.get_class($this).' :: '.$method);
436 if (method_exists($this->output, $method)) {
437 return call_user_func_array(array($this->output, $method), $arguments);
439 throw new coding_exception('Unknown method called against '.get_class($this).' :: '.$method);
446 * The standard implementation of the core_renderer interface.
448 * @copyright 2009 Tim Hunt
449 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
454 class core_renderer extends renderer_base {
456 * Do NOT use, please use <?php echo $OUTPUT->main_content() ?>
457 * in layout files instead.
459 * @var string used in {@link core_renderer::header()}.
461 const MAIN_CONTENT_TOKEN = '[MAIN CONTENT GOES HERE]';
464 * @var string Used to pass information from {@link core_renderer::doctype()} to
465 * {@link core_renderer::standard_head_html()}.
467 protected $contenttype;
470 * @var string Used by {@link core_renderer::redirect_message()} method to communicate
471 * with {@link core_renderer::header()}.
473 protected $metarefreshtag = '';
476 * @var string Unique token for the closing HTML
478 protected $unique_end_html_token;
481 * @var string Unique token for performance information
483 protected $unique_performance_info_token;
486 * @var string Unique token for the main content.
488 protected $unique_main_content_token;
493 * @param moodle_page $page the page we are doing output for.
494 * @param string $target one of rendering target constants
496 public function __construct(moodle_page $page, $target) {
497 $this->opencontainers = $page->opencontainers;
499 $this->target = $target;
501 $this->unique_end_html_token = '%%ENDHTML-'.sesskey().'%%';
502 $this->unique_performance_info_token = '%%PERFORMANCEINFO-'.sesskey().'%%';
503 $this->unique_main_content_token = '[MAIN CONTENT GOES HERE - '.sesskey().']';
507 * Get the DOCTYPE declaration that should be used with this page. Designed to
508 * be called in theme layout.php files.
510 * @return string the DOCTYPE declaration that should be used.
512 public function doctype() {
513 if ($this->page->theme->doctype === 'html5') {
514 $this->contenttype = 'text/html; charset=utf-8';
515 return "<!DOCTYPE html>\n";
517 } else if ($this->page->theme->doctype === 'xhtml5') {
518 $this->contenttype = 'application/xhtml+xml; charset=utf-8';
519 return "<!DOCTYPE html>\n";
523 $this->contenttype = 'text/html; charset=utf-8';
524 return ('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">' . "\n");
529 * The attributes that should be added to the <html> tag. Designed to
530 * be called in theme layout.php files.
532 * @return string HTML fragment.
534 public function htmlattributes() {
535 $return = get_html_lang(true);
536 $attributes = array();
537 if ($this->page->theme->doctype !== 'html5') {
538 $attributes['xmlns'] = 'http://www.w3.org/1999/xhtml';
541 // Give plugins an opportunity to add things like xml namespaces to the html element.
542 // This function should return an array of html attribute names => values.
543 $pluginswithfunction = get_plugins_with_function('add_htmlattributes', 'lib.php');
544 foreach ($pluginswithfunction as $plugins) {
545 foreach ($plugins as $function) {
546 $newattrs = $function();
547 unset($newattrs['dir']);
548 unset($newattrs['lang']);
549 unset($newattrs['xmlns']);
550 unset($newattrs['xml:lang']);
551 $attributes += $newattrs;
555 foreach ($attributes as $key => $val) {
557 $return .= " $key=\"$val\"";
564 * The standard tags (meta tags, links to stylesheets and JavaScript, etc.)
565 * that should be included in the <head> tag. Designed to be called in theme
568 * @return string HTML fragment.
570 public function standard_head_html() {
571 global $CFG, $SESSION;
573 // Before we output any content, we need to ensure that certain
574 // page components are set up.
576 // Blocks must be set up early as they may require javascript which
577 // has to be included in the page header before output is created.
578 foreach ($this->page->blocks->get_regions() as $region) {
579 $this->page->blocks->ensure_content_created($region, $this);
584 // Give plugins an opportunity to add any head elements. The callback
585 // must always return a string containing valid html head content.
586 $pluginswithfunction = get_plugins_with_function('before_standard_html_head', 'lib.php');
587 foreach ($pluginswithfunction as $plugins) {
588 foreach ($plugins as $function) {
589 $output .= $function();
593 // Allow a url_rewrite plugin to setup any dynamic head content.
594 if (isset($CFG->urlrewriteclass) && !isset($CFG->upgraderunning)) {
595 $class = $CFG->urlrewriteclass;
596 $output .= $class::html_head_setup();
599 $output .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' . "\n";
600 $output .= '<meta name="keywords" content="moodle, ' . $this->page->title . '" />' . "\n";
601 // This is only set by the {@link redirect()} method
602 $output .= $this->metarefreshtag;
604 // Check if a periodic refresh delay has been set and make sure we arn't
605 // already meta refreshing
606 if ($this->metarefreshtag=='' && $this->page->periodicrefreshdelay!==null) {
607 $output .= '<meta http-equiv="refresh" content="'.$this->page->periodicrefreshdelay.';url='.$this->page->url->out().'" />';
610 // Set up help link popups for all links with the helptooltip class
611 $this->page->requires->js_init_call('M.util.help_popups.setup');
613 $focus = $this->page->focuscontrol;
614 if (!empty($focus)) {
615 if (preg_match("#forms\['([a-zA-Z0-9]+)'\].elements\['([a-zA-Z0-9]+)'\]#", $focus, $matches)) {
616 // This is a horrifically bad way to handle focus but it is passed in
617 // through messy formslib::moodleform
618 $this->page->requires->js_function_call('old_onload_focus', array($matches[1], $matches[2]));
619 } else if (strpos($focus, '.')!==false) {
620 // Old style of focus, bad way to do it
621 debugging('This code is using the old style focus event, Please update this code to focus on an element id or the moodleform focus method.', DEBUG_DEVELOPER);
622 $this->page->requires->js_function_call('old_onload_focus', explode('.', $focus, 2));
624 // Focus element with given id
625 $this->page->requires->js_function_call('focuscontrol', array($focus));
629 // Get the theme stylesheet - this has to be always first CSS, this loads also styles.css from all plugins;
630 // any other custom CSS can not be overridden via themes and is highly discouraged
631 $urls = $this->page->theme->css_urls($this->page);
632 foreach ($urls as $url) {
633 $this->page->requires->css_theme($url);
636 // Get the theme javascript head and footer
637 if ($jsurl = $this->page->theme->javascript_url(true)) {
638 $this->page->requires->js($jsurl, true);
640 if ($jsurl = $this->page->theme->javascript_url(false)) {
641 $this->page->requires->js($jsurl);
644 // Get any HTML from the page_requirements_manager.
645 $output .= $this->page->requires->get_head_code($this->page, $this);
647 // List alternate versions.
648 foreach ($this->page->alternateversions as $type => $alt) {
649 $output .= html_writer::empty_tag('link', array('rel' => 'alternate',
650 'type' => $type, 'title' => $alt->title, 'href' => $alt->url));
653 // Add noindex tag if relevant page and setting applied.
654 $allowindexing = isset($CFG->allowindexing) ? $CFG->allowindexing : 0;
655 $loginpages = array('login-index', 'login-signup');
656 if ($allowindexing == 2 || ($allowindexing == 0 && in_array($this->page->pagetype, $loginpages))) {
657 if (!isset($CFG->additionalhtmlhead)) {
658 $CFG->additionalhtmlhead = '';
660 $CFG->additionalhtmlhead .= '<meta name="robots" content="noindex" />';
663 if (!empty($CFG->additionalhtmlhead)) {
664 $output .= "\n".$CFG->additionalhtmlhead;
671 * The standard tags (typically skip links) that should be output just inside
672 * the start of the <body> tag. Designed to be called in theme layout.php files.
674 * @return string HTML fragment.
676 public function standard_top_of_body_html() {
678 $output = $this->page->requires->get_top_of_body_code($this);
679 if ($this->page->pagelayout !== 'embedded' && !empty($CFG->additionalhtmltopofbody)) {
680 $output .= "\n".$CFG->additionalhtmltopofbody;
683 // Give plugins an opportunity to inject extra html content. The callback
684 // must always return a string containing valid html.
685 $pluginswithfunction = get_plugins_with_function('before_standard_top_of_body_html', 'lib.php');
686 foreach ($pluginswithfunction as $plugins) {
687 foreach ($plugins as $function) {
688 $output .= $function();
692 $output .= $this->maintenance_warning();
698 * Scheduled maintenance warning message.
700 * Note: This is a nasty hack to display maintenance notice, this should be moved
701 * to some general notification area once we have it.
705 public function maintenance_warning() {
709 if (isset($CFG->maintenance_later) and $CFG->maintenance_later > time()) {
710 $timeleft = $CFG->maintenance_later - time();
711 // If timeleft less than 30 sec, set the class on block to error to highlight.
712 $errorclass = ($timeleft < 30) ? 'alert-error alert-danger' : 'alert-warning';
713 $output .= $this->box_start($errorclass . ' moodle-has-zindex maintenancewarning m-a-1 alert');
715 $a->hour = (int)($timeleft / 3600);
716 $a->min = (int)(($timeleft / 60) % 60);
717 $a->sec = (int)($timeleft % 60);
719 $output .= get_string('maintenancemodeisscheduledlong', 'admin', $a);
721 $output .= get_string('maintenancemodeisscheduled', 'admin', $a);
724 $output .= $this->box_end();
725 $this->page->requires->yui_module('moodle-core-maintenancemodetimer', 'M.core.maintenancemodetimer',
726 array(array('timeleftinsec' => $timeleft)));
727 $this->page->requires->strings_for_js(
728 array('maintenancemodeisscheduled', 'maintenancemodeisscheduledlong', 'sitemaintenance'),
735 * The standard tags (typically performance information and validation links,
736 * if we are in developer debug mode) that should be output in the footer area
737 * of the page. Designed to be called in theme layout.php files.
739 * @return string HTML fragment.
741 public function standard_footer_html() {
742 global $CFG, $SCRIPT;
745 if (during_initial_install()) {
746 // Debugging info can not work before install is finished,
747 // in any case we do not want any links during installation!
751 // Give plugins an opportunity to add any footer elements.
752 // The callback must always return a string containing valid html footer content.
753 $pluginswithfunction = get_plugins_with_function('standard_footer_html', 'lib.php');
754 foreach ($pluginswithfunction as $plugins) {
755 foreach ($plugins as $function) {
756 $output .= $function();
760 // This function is normally called from a layout.php file in {@link core_renderer::header()}
761 // but some of the content won't be known until later, so we return a placeholder
762 // for now. This will be replaced with the real content in {@link core_renderer::footer()}.
763 $output .= $this->unique_performance_info_token;
764 if ($this->page->devicetypeinuse == 'legacy') {
765 // The legacy theme is in use print the notification
766 $output .= html_writer::tag('div', get_string('legacythemeinuse'), array('class'=>'legacythemeinuse'));
769 // Get links to switch device types (only shown for users not on a default device)
770 $output .= $this->theme_switch_links();
772 if (!empty($CFG->debugpageinfo)) {
773 $output .= '<div class="performanceinfo pageinfo">This page is: ' . $this->page->debug_summary() . '</div>';
775 if (debugging(null, DEBUG_DEVELOPER) and has_capability('moodle/site:config', context_system::instance())) { // Only in developer mode
776 // Add link to profiling report if necessary
777 if (function_exists('profiling_is_running') && profiling_is_running()) {
778 $txt = get_string('profiledscript', 'admin');
779 $title = get_string('profiledscriptview', 'admin');
780 $url = $CFG->wwwroot . '/admin/tool/profiling/index.php?script=' . urlencode($SCRIPT);
781 $link= '<a title="' . $title . '" href="' . $url . '">' . $txt . '</a>';
782 $output .= '<div class="profilingfooter">' . $link . '</div>';
784 $purgeurl = new moodle_url('/admin/purgecaches.php', array('confirm' => 1,
785 'sesskey' => sesskey(), 'returnurl' => $this->page->url->out_as_local_url(false)));
786 $output .= '<div class="purgecaches">' .
787 html_writer::link($purgeurl, get_string('purgecaches', 'admin')) . '</div>';
789 if (!empty($CFG->debugvalidators)) {
790 // NOTE: this is not a nice hack, $PAGE->url is not always accurate and $FULLME neither, it is not a bug if it fails. --skodak
791 $output .= '<div class="validators"><ul class="list-unstyled m-l-1">
792 <li><a href="http://validator.w3.org/check?verbose=1&ss=1&uri=' . urlencode(qualified_me()) . '">Validate HTML</a></li>
793 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=-1&url1=' . urlencode(qualified_me()) . '">Section 508 Check</a></li>
794 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=0&warnp2n3e=1&url1=' . urlencode(qualified_me()) . '">WCAG 1 (2,3) Check</a></li>
801 * Returns standard main content placeholder.
802 * Designed to be called in theme layout.php files.
804 * @return string HTML fragment.
806 public function main_content() {
807 // This is here because it is the only place we can inject the "main" role over the entire main content area
808 // without requiring all theme's to manually do it, and without creating yet another thing people need to
809 // remember in the theme.
810 // This is an unfortunate hack. DO NO EVER add anything more here.
811 // DO NOT add classes.
813 return '<div role="main">'.$this->unique_main_content_token.'</div>';
817 * Returns standard navigation between activities in a course.
819 * @return string the navigation HTML.
821 public function activity_navigation() {
822 // First we should check if we want to add navigation.
823 $context = $this->page->context;
824 if (($this->page->pagelayout !== 'incourse' && $this->page->pagelayout !== 'frametop')
825 || $context->contextlevel != CONTEXT_MODULE) {
829 // If the activity is in stealth mode, show no links.
830 if ($this->page->cm->is_stealth()) {
834 // Get a list of all the activities in the course.
835 $course = $this->page->cm->get_course();
836 $modules = get_fast_modinfo($course->id)->get_cms();
838 // Put the modules into an array in order by the position they are shown in the course.
840 foreach ($modules as $module) {
841 // Only add activities the user can access, aren't in stealth mode and have a url (eg. mod_label does not).
842 if (!$module->uservisible || $module->is_stealth() || empty($module->url)) {
845 $mods[$module->id] = $module;
848 $nummods = count($mods);
850 // If there is only one mod then do nothing.
855 // Get an array of just the course module ids used to get the cmid value based on their position in the course.
856 $modids = array_keys($mods);
858 // Get the position in the array of the course module we are viewing.
859 $position = array_search($this->page->cm->id, $modids);
864 // Check if we have a previous mod to show.
866 $prevmod = $mods[$modids[$position - 1]];
869 // Check if we have a next mod to show.
870 if ($position < ($nummods - 1)) {
871 $nextmod = $mods[$modids[$position + 1]];
874 $activitynav = new \core_course\output\activity_navigation($prevmod, $nextmod);
875 $renderer = $this->page->get_renderer('core', 'course');
876 return $renderer->render($activitynav);
880 * The standard tags (typically script tags that are not needed earlier) that
881 * should be output after everything else. Designed to be called in theme layout.php files.
883 * @return string HTML fragment.
885 public function standard_end_of_body_html() {
888 // This function is normally called from a layout.php file in {@link core_renderer::header()}
889 // but some of the content won't be known until later, so we return a placeholder
890 // for now. This will be replaced with the real content in {@link core_renderer::footer()}.
892 if ($this->page->pagelayout !== 'embedded' && !empty($CFG->additionalhtmlfooter)) {
893 $output .= "\n".$CFG->additionalhtmlfooter;
895 $output .= $this->unique_end_html_token;
900 * Return the standard string that says whether you are logged in (and switched
901 * roles/logged in as another user).
902 * @param bool $withlinks if false, then don't include any links in the HTML produced.
903 * If not set, the default is the nologinlinks option from the theme config.php file,
904 * and if that is not set, then links are included.
905 * @return string HTML fragment.
907 public function login_info($withlinks = null) {
908 global $USER, $CFG, $DB, $SESSION;
910 if (during_initial_install()) {
914 if (is_null($withlinks)) {
915 $withlinks = empty($this->page->layout_options['nologinlinks']);
918 $course = $this->page->course;
919 if (\core\session\manager::is_loggedinas()) {
920 $realuser = \core\session\manager::get_realuser();
921 $fullname = fullname($realuser, true);
923 $loginastitle = get_string('loginas');
924 $realuserinfo = " [<a href=\"$CFG->wwwroot/course/loginas.php?id=$course->id&sesskey=".sesskey()."\"";
925 $realuserinfo .= "title =\"".$loginastitle."\">$fullname</a>] ";
927 $realuserinfo = " [$fullname] ";
933 $loginpage = $this->is_login_page();
934 $loginurl = get_login_url();
936 if (empty($course->id)) {
937 // $course->id is not defined during installation
939 } else if (isloggedin()) {
940 $context = context_course::instance($course->id);
942 $fullname = fullname($USER, true);
943 // Since Moodle 2.0 this link always goes to the public profile page (not the course profile page)
945 $linktitle = get_string('viewprofile');
946 $username = "<a href=\"$CFG->wwwroot/user/profile.php?id=$USER->id\" title=\"$linktitle\">$fullname</a>";
948 $username = $fullname;
950 if (is_mnet_remote_user($USER) and $idprovider = $DB->get_record('mnet_host', array('id'=>$USER->mnethostid))) {
952 $username .= " from <a href=\"{$idprovider->wwwroot}\">{$idprovider->name}</a>";
954 $username .= " from {$idprovider->name}";
958 $loggedinas = $realuserinfo.get_string('loggedinasguest');
959 if (!$loginpage && $withlinks) {
960 $loggedinas .= " (<a href=\"$loginurl\">".get_string('login').'</a>)';
962 } else if (is_role_switched($course->id)) { // Has switched roles
964 if ($role = $DB->get_record('role', array('id'=>$USER->access['rsw'][$context->path]))) {
965 $rolename = ': '.role_get_name($role, $context);
967 $loggedinas = get_string('loggedinas', 'moodle', $username).$rolename;
969 $url = new moodle_url('/course/switchrole.php', array('id'=>$course->id,'sesskey'=>sesskey(), 'switchrole'=>0, 'returnurl'=>$this->page->url->out_as_local_url(false)));
970 $loggedinas .= ' ('.html_writer::tag('a', get_string('switchrolereturn'), array('href' => $url)).')';
973 $loggedinas = $realuserinfo.get_string('loggedinas', 'moodle', $username);
975 $loggedinas .= " (<a href=\"$CFG->wwwroot/login/logout.php?sesskey=".sesskey()."\">".get_string('logout').'</a>)';
979 $loggedinas = get_string('loggedinnot', 'moodle');
980 if (!$loginpage && $withlinks) {
981 $loggedinas .= " (<a href=\"$loginurl\">".get_string('login').'</a>)';
985 $loggedinas = '<div class="logininfo">'.$loggedinas.'</div>';
987 if (isset($SESSION->justloggedin)) {
988 unset($SESSION->justloggedin);
989 if (!empty($CFG->displayloginfailures)) {
990 if (!isguestuser()) {
991 // Include this file only when required.
992 require_once($CFG->dirroot . '/user/lib.php');
993 if ($count = user_count_login_failures($USER)) {
994 $loggedinas .= '<div class="loginfailures">';
996 $a->attempts = $count;
997 $loggedinas .= get_string('failedloginattempts', '', $a);
998 if (file_exists("$CFG->dirroot/report/log/index.php") and has_capability('report/log:view', context_system::instance())) {
999 $loggedinas .= ' ('.html_writer::link(new moodle_url('/report/log/index.php', array('chooselog' => 1,
1000 'id' => 0 , 'modid' => 'site_errors')), get_string('logs')).')';
1002 $loggedinas .= '</div>';
1012 * Check whether the current page is a login page.
1017 protected function is_login_page() {
1018 // This is a real bit of a hack, but its a rarety that we need to do something like this.
1019 // In fact the login pages should be only these two pages and as exposing this as an option for all pages
1020 // could lead to abuse (or at least unneedingly complex code) the hack is the way to go.
1022 $this->page->url->out_as_local_url(false, array()),
1025 '/login/forgot_password.php',
1031 * Return the 'back' link that normally appears in the footer.
1033 * @return string HTML fragment.
1035 public function home_link() {
1038 if ($this->page->pagetype == 'site-index') {
1039 // Special case for site home page - please do not remove
1040 return '<div class="sitelink">' .
1041 '<a title="Moodle" href="http://moodle.org/">' .
1042 '<img src="' . $this->image_url('moodlelogo') . '" alt="'.get_string('moodlelogo').'" /></a></div>';
1044 } else if (!empty($CFG->target_release) && $CFG->target_release != $CFG->release) {
1045 // Special case for during install/upgrade.
1046 return '<div class="sitelink">'.
1047 '<a title="Moodle" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">' .
1048 '<img src="' . $this->image_url('moodlelogo') . '" alt="'.get_string('moodlelogo').'" /></a></div>';
1050 } else if ($this->page->course->id == $SITE->id || strpos($this->page->pagetype, 'course-view') === 0) {
1051 return '<div class="homelink"><a href="' . $CFG->wwwroot . '/">' .
1052 get_string('home') . '</a></div>';
1055 return '<div class="homelink"><a href="' . $CFG->wwwroot . '/course/view.php?id=' . $this->page->course->id . '">' .
1056 format_string($this->page->course->shortname, true, array('context' => $this->page->context)) . '</a></div>';
1061 * Redirects the user by any means possible given the current state
1063 * This function should not be called directly, it should always be called using
1064 * the redirect function in lib/weblib.php
1066 * The redirect function should really only be called before page output has started
1067 * however it will allow itself to be called during the state STATE_IN_BODY
1069 * @param string $encodedurl The URL to send to encoded if required
1070 * @param string $message The message to display to the user if any
1071 * @param int $delay The delay before redirecting a user, if $message has been
1072 * set this is a requirement and defaults to 3, set to 0 no delay
1073 * @param boolean $debugdisableredirect this redirect has been disabled for
1074 * debugging purposes. Display a message that explains, and don't
1075 * trigger the redirect.
1076 * @param string $messagetype The type of notification to show the message in.
1077 * See constants on \core\output\notification.
1078 * @return string The HTML to display to the user before dying, may contain
1079 * meta refresh, javascript refresh, and may have set header redirects
1081 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect,
1082 $messagetype = \core\output\notification::NOTIFY_INFO) {
1084 $url = str_replace('&', '&', $encodedurl);
1086 switch ($this->page->state) {
1087 case moodle_page::STATE_BEFORE_HEADER :
1088 // No output yet it is safe to delivery the full arsenal of redirect methods
1089 if (!$debugdisableredirect) {
1090 // Don't use exactly the same time here, it can cause problems when both redirects fire at the same time.
1091 $this->metarefreshtag = '<meta http-equiv="refresh" content="'. $delay .'; url='. $encodedurl .'" />'."\n";
1092 $this->page->requires->js_function_call('document.location.replace', array($url), false, ($delay + 3));
1094 $output = $this->header();
1096 case moodle_page::STATE_PRINTING_HEADER :
1097 // We should hopefully never get here
1098 throw new coding_exception('You cannot redirect while printing the page header');
1100 case moodle_page::STATE_IN_BODY :
1101 // We really shouldn't be here but we can deal with this
1102 debugging("You should really redirect before you start page output");
1103 if (!$debugdisableredirect) {
1104 $this->page->requires->js_function_call('document.location.replace', array($url), false, $delay);
1106 $output = $this->opencontainers->pop_all_but_last();
1108 case moodle_page::STATE_DONE :
1109 // Too late to be calling redirect now
1110 throw new coding_exception('You cannot redirect after the entire page has been generated');
1113 $output .= $this->notification($message, $messagetype);
1114 $output .= '<div class="continuebutton">(<a href="'. $encodedurl .'">'. get_string('continue') .'</a>)</div>';
1115 if ($debugdisableredirect) {
1116 $output .= '<p><strong>'.get_string('erroroutput', 'error').'</strong></p>';
1118 $output .= $this->footer();
1123 * Start output by sending the HTTP headers, and printing the HTML <head>
1124 * and the start of the <body>.
1126 * To control what is printed, you should set properties on $PAGE. If you
1127 * are familiar with the old {@link print_header()} function from Moodle 1.9
1128 * you will find that there are properties on $PAGE that correspond to most
1129 * of the old parameters to could be passed to print_header.
1131 * Not that, in due course, the remaining $navigation, $menu parameters here
1132 * will be replaced by more properties of $PAGE, but that is still to do.
1134 * @return string HTML that you must output this, preferably immediately.
1136 public function header() {
1137 global $USER, $CFG, $SESSION;
1139 // Give plugins an opportunity touch things before the http headers are sent
1140 // such as adding additional headers. The return value is ignored.
1141 $pluginswithfunction = get_plugins_with_function('before_http_headers', 'lib.php');
1142 foreach ($pluginswithfunction as $plugins) {
1143 foreach ($plugins as $function) {
1148 if (\core\session\manager::is_loggedinas()) {
1149 $this->page->add_body_class('userloggedinas');
1152 if (isset($SESSION->justloggedin) && !empty($CFG->displayloginfailures)) {
1153 require_once($CFG->dirroot . '/user/lib.php');
1154 // Set second parameter to false as we do not want reset the counter, the same message appears on footer.
1155 if ($count = user_count_login_failures($USER, false)) {
1156 $this->page->add_body_class('loginfailures');
1160 // If the user is logged in, and we're not in initial install,
1161 // check to see if the user is role-switched and add the appropriate
1162 // CSS class to the body element.
1163 if (!during_initial_install() && isloggedin() && is_role_switched($this->page->course->id)) {
1164 $this->page->add_body_class('userswitchedrole');
1167 // Give themes a chance to init/alter the page object.
1168 $this->page->theme->init_page($this->page);
1170 $this->page->set_state(moodle_page::STATE_PRINTING_HEADER);
1172 // Find the appropriate page layout file, based on $this->page->pagelayout.
1173 $layoutfile = $this->page->theme->layout_file($this->page->pagelayout);
1174 // Render the layout using the layout file.
1175 $rendered = $this->render_page_layout($layoutfile);
1177 // Slice the rendered output into header and footer.
1178 $cutpos = strpos($rendered, $this->unique_main_content_token);
1179 if ($cutpos === false) {
1180 $cutpos = strpos($rendered, self::MAIN_CONTENT_TOKEN);
1181 $token = self::MAIN_CONTENT_TOKEN;
1183 $token = $this->unique_main_content_token;
1186 if ($cutpos === false) {
1187 throw new coding_exception('page layout file ' . $layoutfile . ' does not contain the main content placeholder, please include "<?php echo $OUTPUT->main_content() ?>" in theme layout file.');
1189 $header = substr($rendered, 0, $cutpos);
1190 $footer = substr($rendered, $cutpos + strlen($token));
1192 if (empty($this->contenttype)) {
1193 debugging('The page layout file did not call $OUTPUT->doctype()');
1194 $header = $this->doctype() . $header;
1197 // If this theme version is below 2.4 release and this is a course view page
1198 if ((!isset($this->page->theme->settings->version) || $this->page->theme->settings->version < 2012101500) &&
1199 $this->page->pagelayout === 'course' && $this->page->url->compare(new moodle_url('/course/view.php'), URL_MATCH_BASE)) {
1200 // check if course content header/footer have not been output during render of theme layout
1201 $coursecontentheader = $this->course_content_header(true);
1202 $coursecontentfooter = $this->course_content_footer(true);
1203 if (!empty($coursecontentheader)) {
1204 // display debug message and add header and footer right above and below main content
1205 // Please note that course header and footer (to be displayed above and below the whole page)
1206 // are not displayed in this case at all.
1207 // Besides the content header and footer are not displayed on any other course page
1208 debugging('The current theme is not optimised for 2.4, the course-specific header and footer defined in course format will not be output', DEBUG_DEVELOPER);
1209 $header .= $coursecontentheader;
1210 $footer = $coursecontentfooter. $footer;
1214 send_headers($this->contenttype, $this->page->cacheable);
1216 $this->opencontainers->push('header/footer', $footer);
1217 $this->page->set_state(moodle_page::STATE_IN_BODY);
1219 return $header . $this->skip_link_target('maincontent');
1223 * Renders and outputs the page layout file.
1225 * This is done by preparing the normal globals available to a script, and
1226 * then including the layout file provided by the current theme for the
1229 * @param string $layoutfile The name of the layout file
1230 * @return string HTML code
1232 protected function render_page_layout($layoutfile) {
1233 global $CFG, $SITE, $USER;
1234 // The next lines are a bit tricky. The point is, here we are in a method
1235 // of a renderer class, and this object may, or may not, be the same as
1236 // the global $OUTPUT object. When rendering the page layout file, we want to use
1237 // this object. However, people writing Moodle code expect the current
1238 // renderer to be called $OUTPUT, not $this, so define a variable called
1239 // $OUTPUT pointing at $this. The same comment applies to $PAGE and $COURSE.
1241 $PAGE = $this->page;
1242 $COURSE = $this->page->course;
1245 include($layoutfile);
1246 $rendered = ob_get_contents();
1252 * Outputs the page's footer
1254 * @return string HTML fragment
1256 public function footer() {
1257 global $CFG, $DB, $PAGE;
1259 // Give plugins an opportunity to touch the page before JS is finalized.
1260 $pluginswithfunction = get_plugins_with_function('before_footer', 'lib.php');
1261 foreach ($pluginswithfunction as $plugins) {
1262 foreach ($plugins as $function) {
1267 $output = $this->container_end_all(true);
1269 $footer = $this->opencontainers->pop('header/footer');
1271 if (debugging() and $DB and $DB->is_transaction_started()) {
1272 // TODO: MDL-20625 print warning - transaction will be rolled back
1275 // Provide some performance info if required
1276 $performanceinfo = '';
1277 if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
1278 $perf = get_performance_info();
1279 if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
1280 $performanceinfo = $perf['html'];
1284 // We always want performance data when running a performance test, even if the user is redirected to another page.
1285 if (MDL_PERF_TEST && strpos($footer, $this->unique_performance_info_token) === false) {
1286 $footer = $this->unique_performance_info_token . $footer;
1288 $footer = str_replace($this->unique_performance_info_token, $performanceinfo, $footer);
1290 // Only show notifications when we have a $PAGE context id.
1291 if (!empty($PAGE->context->id)) {
1292 $this->page->requires->js_call_amd('core/notification', 'init', array(
1294 \core\notification::fetch_as_array($this)
1297 $footer = str_replace($this->unique_end_html_token, $this->page->requires->get_end_code(), $footer);
1299 $this->page->set_state(moodle_page::STATE_DONE);
1301 return $output . $footer;
1305 * Close all but the last open container. This is useful in places like error
1306 * handling, where you want to close all the open containers (apart from <body>)
1307 * before outputting the error message.
1309 * @param bool $shouldbenone assert that the stack should be empty now - causes a
1310 * developer debug warning if it isn't.
1311 * @return string the HTML required to close any open containers inside <body>.
1313 public function container_end_all($shouldbenone = false) {
1314 return $this->opencontainers->pop_all_but_last($shouldbenone);
1318 * Returns course-specific information to be output immediately above content on any course page
1319 * (for the current course)
1321 * @param bool $onlyifnotcalledbefore output content only if it has not been output before
1324 public function course_content_header($onlyifnotcalledbefore = false) {
1326 static $functioncalled = false;
1327 if ($functioncalled && $onlyifnotcalledbefore) {
1328 // we have already output the content header
1332 // Output any session notification.
1333 $notifications = \core\notification::fetch();
1335 $bodynotifications = '';
1336 foreach ($notifications as $notification) {
1337 $bodynotifications .= $this->render_from_template(
1338 $notification->get_template_name(),
1339 $notification->export_for_template($this)
1343 $output = html_writer::span($bodynotifications, 'notifications', array('id' => 'user-notifications'));
1345 if ($this->page->course->id == SITEID) {
1346 // return immediately and do not include /course/lib.php if not necessary
1350 require_once($CFG->dirroot.'/course/lib.php');
1351 $functioncalled = true;
1352 $courseformat = course_get_format($this->page->course);
1353 if (($obj = $courseformat->course_content_header()) !== null) {
1354 $output .= html_writer::div($courseformat->get_renderer($this->page)->render($obj), 'course-content-header');
1360 * Returns course-specific information to be output immediately below content on any course page
1361 * (for the current course)
1363 * @param bool $onlyifnotcalledbefore output content only if it has not been output before
1366 public function course_content_footer($onlyifnotcalledbefore = false) {
1368 if ($this->page->course->id == SITEID) {
1369 // return immediately and do not include /course/lib.php if not necessary
1372 static $functioncalled = false;
1373 if ($functioncalled && $onlyifnotcalledbefore) {
1374 // we have already output the content footer
1377 $functioncalled = true;
1378 require_once($CFG->dirroot.'/course/lib.php');
1379 $courseformat = course_get_format($this->page->course);
1380 if (($obj = $courseformat->course_content_footer()) !== null) {
1381 return html_writer::div($courseformat->get_renderer($this->page)->render($obj), 'course-content-footer');
1387 * Returns course-specific information to be output on any course page in the header area
1388 * (for the current course)
1392 public function course_header() {
1394 if ($this->page->course->id == SITEID) {
1395 // return immediately and do not include /course/lib.php if not necessary
1398 require_once($CFG->dirroot.'/course/lib.php');
1399 $courseformat = course_get_format($this->page->course);
1400 if (($obj = $courseformat->course_header()) !== null) {
1401 return $courseformat->get_renderer($this->page)->render($obj);
1407 * Returns course-specific information to be output on any course page in the footer area
1408 * (for the current course)
1412 public function course_footer() {
1414 if ($this->page->course->id == SITEID) {
1415 // return immediately and do not include /course/lib.php if not necessary
1418 require_once($CFG->dirroot.'/course/lib.php');
1419 $courseformat = course_get_format($this->page->course);
1420 if (($obj = $courseformat->course_footer()) !== null) {
1421 return $courseformat->get_renderer($this->page)->render($obj);
1427 * Returns lang menu or '', this method also checks forcing of languages in courses.
1429 * This function calls {@link core_renderer::render_single_select()} to actually display the language menu.
1431 * @return string The lang menu HTML or empty string
1433 public function lang_menu() {
1436 if (empty($CFG->langmenu)) {
1440 if ($this->page->course != SITEID and !empty($this->page->course->lang)) {
1441 // do not show lang menu if language forced
1445 $currlang = current_language();
1446 $langs = get_string_manager()->get_list_of_translations();
1448 if (count($langs) < 2) {
1452 $s = new single_select($this->page->url, 'lang', $langs, $currlang, null);
1453 $s->label = get_accesshide(get_string('language'));
1454 $s->class = 'langmenu';
1455 return $this->render($s);
1459 * Output the row of editing icons for a block, as defined by the controls array.
1461 * @param array $controls an array like {@link block_contents::$controls}.
1462 * @param string $blockid The ID given to the block.
1463 * @return string HTML fragment.
1465 public function block_controls($actions, $blockid = null) {
1467 if (empty($actions)) {
1470 $menu = new action_menu($actions);
1471 if ($blockid !== null) {
1472 $menu->set_owner_selector('#'.$blockid);
1474 $menu->set_constraint('.block-region');
1475 $menu->attributes['class'] .= ' block-control-actions commands';
1476 return $this->render($menu);
1480 * Renders an action menu component.
1483 * - http://www.w3.org/WAI/GL/wiki/Using_ARIA_menus
1484 * - http://stackoverflow.com/questions/12279113/recommended-wai-aria-implementation-for-navigation-bar-menu
1486 * @param action_menu $menu
1487 * @return string HTML
1489 public function render_action_menu(action_menu $menu) {
1490 $context = $menu->export_for_template($this);
1491 return $this->render_from_template('core/action_menu', $context);
1495 * Renders an action_menu_link item.
1497 * @param action_menu_link $action
1498 * @return string HTML fragment
1500 protected function render_action_menu_link(action_menu_link $action) {
1501 return $this->render_from_template('core/action_menu_link', $action->export_for_template($this));
1505 * Renders a primary action_menu_filler item.
1507 * @param action_menu_link_filler $action
1508 * @return string HTML fragment
1510 protected function render_action_menu_filler(action_menu_filler $action) {
1511 return html_writer::span(' ', 'filler');
1515 * Renders a primary action_menu_link item.
1517 * @param action_menu_link_primary $action
1518 * @return string HTML fragment
1520 protected function render_action_menu_link_primary(action_menu_link_primary $action) {
1521 return $this->render_action_menu_link($action);
1525 * Renders a secondary action_menu_link item.
1527 * @param action_menu_link_secondary $action
1528 * @return string HTML fragment
1530 protected function render_action_menu_link_secondary(action_menu_link_secondary $action) {
1531 return $this->render_action_menu_link($action);
1535 * Prints a nice side block with an optional header.
1537 * The content is described
1538 * by a {@link core_renderer::block_contents} object.
1540 * <div id="inst{$instanceid}" class="block_{$blockname} block">
1541 * <div class="header"></div>
1542 * <div class="content">
1544 * <div class="footer">
1547 * <div class="annotation">
1551 * @param block_contents $bc HTML for the content
1552 * @param string $region the region the block is appearing in.
1553 * @return string the HTML to be output.
1555 public function block(block_contents $bc, $region) {
1556 $bc = clone($bc); // Avoid messing up the object passed in.
1557 if (empty($bc->blockinstanceid) || !strip_tags($bc->title)) {
1558 $bc->collapsible = block_contents::NOT_HIDEABLE;
1560 if (!empty($bc->blockinstanceid)) {
1561 $bc->attributes['data-instanceid'] = $bc->blockinstanceid;
1563 $skiptitle = strip_tags($bc->title);
1564 if ($bc->blockinstanceid && !empty($skiptitle)) {
1565 $bc->attributes['aria-labelledby'] = 'instance-'.$bc->blockinstanceid.'-header';
1566 } else if (!empty($bc->arialabel)) {
1567 $bc->attributes['aria-label'] = $bc->arialabel;
1569 if ($bc->dockable) {
1570 $bc->attributes['data-dockable'] = 1;
1572 if ($bc->collapsible == block_contents::HIDDEN) {
1573 $bc->add_class('hidden');
1575 if (!empty($bc->controls)) {
1576 $bc->add_class('block_with_controls');
1580 if (empty($skiptitle)) {
1584 $output = html_writer::link('#sb-'.$bc->skipid, get_string('skipa', 'access', $skiptitle),
1585 array('class' => 'skip skip-block', 'id' => 'fsb-' . $bc->skipid));
1586 $skipdest = html_writer::span('', 'skip-block-to',
1587 array('id' => 'sb-' . $bc->skipid));
1590 $output .= html_writer::start_tag('div', $bc->attributes);
1592 $output .= $this->block_header($bc);
1593 $output .= $this->block_content($bc);
1595 $output .= html_writer::end_tag('div');
1597 $output .= $this->block_annotation($bc);
1599 $output .= $skipdest;
1601 $this->init_block_hider_js($bc);
1606 * Produces a header for a block
1608 * @param block_contents $bc
1611 protected function block_header(block_contents $bc) {
1615 $attributes = array();
1616 if ($bc->blockinstanceid) {
1617 $attributes['id'] = 'instance-'.$bc->blockinstanceid.'-header';
1619 $title = html_writer::tag('h2', $bc->title, $attributes);
1623 if (isset($bc->attributes['id'])) {
1624 $blockid = $bc->attributes['id'];
1626 $controlshtml = $this->block_controls($bc->controls, $blockid);
1629 if ($title || $controlshtml) {
1630 $output .= html_writer::tag('div', html_writer::tag('div', html_writer::tag('div', '', array('class'=>'block_action')). $title . $controlshtml, array('class' => 'title')), array('class' => 'header'));
1636 * Produces the content area for a block
1638 * @param block_contents $bc
1641 protected function block_content(block_contents $bc) {
1642 $output = html_writer::start_tag('div', array('class' => 'content'));
1643 if (!$bc->title && !$this->block_controls($bc->controls)) {
1644 $output .= html_writer::tag('div', '', array('class'=>'block_action notitle'));
1646 $output .= $bc->content;
1647 $output .= $this->block_footer($bc);
1648 $output .= html_writer::end_tag('div');
1654 * Produces the footer for a block
1656 * @param block_contents $bc
1659 protected function block_footer(block_contents $bc) {
1662 $output .= html_writer::tag('div', $bc->footer, array('class' => 'footer'));
1668 * Produces the annotation for a block
1670 * @param block_contents $bc
1673 protected function block_annotation(block_contents $bc) {
1675 if ($bc->annotation) {
1676 $output .= html_writer::tag('div', $bc->annotation, array('class' => 'blockannotation'));
1682 * Calls the JS require function to hide a block.
1684 * @param block_contents $bc A block_contents object
1686 protected function init_block_hider_js(block_contents $bc) {
1687 if (!empty($bc->attributes['id']) and $bc->collapsible != block_contents::NOT_HIDEABLE) {
1688 $config = new stdClass;
1689 $config->id = $bc->attributes['id'];
1690 $config->title = strip_tags($bc->title);
1691 $config->preference = 'block' . $bc->blockinstanceid . 'hidden';
1692 $config->tooltipVisible = get_string('hideblocka', 'access', $config->title);
1693 $config->tooltipHidden = get_string('showblocka', 'access', $config->title);
1695 $this->page->requires->js_init_call('M.util.init_block_hider', array($config));
1696 user_preference_allow_ajax_update($config->preference, PARAM_BOOL);
1701 * Render the contents of a block_list.
1703 * @param array $icons the icon for each item.
1704 * @param array $items the content of each item.
1705 * @return string HTML
1707 public function list_block_contents($icons, $items) {
1710 foreach ($items as $key => $string) {
1711 $item = html_writer::start_tag('li', array('class' => 'r' . $row));
1712 if (!empty($icons[$key])) { //test if the content has an assigned icon
1713 $item .= html_writer::tag('div', $icons[$key], array('class' => 'icon column c0'));
1715 $item .= html_writer::tag('div', $string, array('class' => 'column c1'));
1716 $item .= html_writer::end_tag('li');
1718 $row = 1 - $row; // Flip even/odd.
1720 return html_writer::tag('ul', implode("\n", $lis), array('class' => 'unlist'));
1724 * Output all the blocks in a particular region.
1726 * @param string $region the name of a region on this page.
1727 * @return string the HTML to be output.
1729 public function blocks_for_region($region) {
1730 $blockcontents = $this->page->blocks->get_content_for_region($region, $this);
1731 $blocks = $this->page->blocks->get_blocks_for_region($region);
1734 foreach ($blocks as $block) {
1735 $zones[] = $block->title;
1739 foreach ($blockcontents as $bc) {
1740 if ($bc instanceof block_contents) {
1741 $output .= $this->block($bc, $region);
1742 $lastblock = $bc->title;
1743 } else if ($bc instanceof block_move_target) {
1744 $output .= $this->block_move_target($bc, $zones, $lastblock, $region);
1746 throw new coding_exception('Unexpected type of thing (' . get_class($bc) . ') found in list of block contents.');
1753 * Output a place where the block that is currently being moved can be dropped.
1755 * @param block_move_target $target with the necessary details.
1756 * @param array $zones array of areas where the block can be moved to
1757 * @param string $previous the block located before the area currently being rendered.
1758 * @param string $region the name of the region
1759 * @return string the HTML to be output.
1761 public function block_move_target($target, $zones, $previous, $region) {
1762 if ($previous == null) {
1763 if (empty($zones)) {
1764 // There are no zones, probably because there are no blocks.
1765 $regions = $this->page->theme->get_all_block_regions();
1766 $position = get_string('moveblockinregion', 'block', $regions[$region]);
1768 $position = get_string('moveblockbefore', 'block', $zones[0]);
1771 $position = get_string('moveblockafter', 'block', $previous);
1773 return html_writer::tag('a', html_writer::tag('span', $position, array('class' => 'accesshide')), array('href' => $target->url, 'class' => 'blockmovetarget'));
1777 * Renders a special html link with attached action
1779 * Theme developers: DO NOT OVERRIDE! Please override function
1780 * {@link core_renderer::render_action_link()} instead.
1782 * @param string|moodle_url $url
1783 * @param string $text HTML fragment
1784 * @param component_action $action
1785 * @param array $attributes associative array of html link attributes + disabled
1786 * @param pix_icon optional pix icon to render with the link
1787 * @return string HTML fragment
1789 public function action_link($url, $text, component_action $action = null, array $attributes = null, $icon = null) {
1790 if (!($url instanceof moodle_url)) {
1791 $url = new moodle_url($url);
1793 $link = new action_link($url, $text, $action, $attributes, $icon);
1795 return $this->render($link);
1799 * Renders an action_link object.
1801 * The provided link is renderer and the HTML returned. At the same time the
1802 * associated actions are setup in JS by {@link core_renderer::add_action_handler()}
1804 * @param action_link $link
1805 * @return string HTML fragment
1807 protected function render_action_link(action_link $link) {
1808 return $this->render_from_template('core/action_link', $link->export_for_template($this));
1812 * Renders an action_icon.
1814 * This function uses the {@link core_renderer::action_link()} method for the
1815 * most part. What it does different is prepare the icon as HTML and use it
1818 * Theme developers: If you want to change how action links and/or icons are rendered,
1819 * consider overriding function {@link core_renderer::render_action_link()} and
1820 * {@link core_renderer::render_pix_icon()}.
1822 * @param string|moodle_url $url A string URL or moodel_url
1823 * @param pix_icon $pixicon
1824 * @param component_action $action
1825 * @param array $attributes associative array of html link attributes + disabled
1826 * @param bool $linktext show title next to image in link
1827 * @return string HTML fragment
1829 public function action_icon($url, pix_icon $pixicon, component_action $action = null, array $attributes = null, $linktext=false) {
1830 if (!($url instanceof moodle_url)) {
1831 $url = new moodle_url($url);
1833 $attributes = (array)$attributes;
1835 if (empty($attributes['class'])) {
1836 // let ppl override the class via $options
1837 $attributes['class'] = 'action-icon';
1840 $icon = $this->render($pixicon);
1843 $text = $pixicon->attributes['alt'];
1848 return $this->action_link($url, $text.$icon, $action, $attributes);
1852 * Print a message along with button choices for Continue/Cancel
1854 * If a string or moodle_url is given instead of a single_button, method defaults to post.
1856 * @param string $message The question to ask the user
1857 * @param single_button|moodle_url|string $continue The single_button component representing the Continue answer. Can also be a moodle_url or string URL
1858 * @param single_button|moodle_url|string $cancel The single_button component representing the Cancel answer. Can also be a moodle_url or string URL
1859 * @return string HTML fragment
1861 public function confirm($message, $continue, $cancel) {
1862 if ($continue instanceof single_button) {
1864 $continue->primary = true;
1865 } else if (is_string($continue)) {
1866 $continue = new single_button(new moodle_url($continue), get_string('continue'), 'post', true);
1867 } else if ($continue instanceof moodle_url) {
1868 $continue = new single_button($continue, get_string('continue'), 'post', true);
1870 throw new coding_exception('The continue param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
1873 if ($cancel instanceof single_button) {
1875 } else if (is_string($cancel)) {
1876 $cancel = new single_button(new moodle_url($cancel), get_string('cancel'), 'get');
1877 } else if ($cancel instanceof moodle_url) {
1878 $cancel = new single_button($cancel, get_string('cancel'), 'get');
1880 throw new coding_exception('The cancel param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
1883 $output = $this->box_start('generalbox modal modal-dialog modal-in-page show', 'notice');
1884 $output .= $this->box_start('modal-content', 'modal-content');
1885 $output .= $this->box_start('modal-header', 'modal-header');
1886 $output .= html_writer::tag('h4', get_string('confirm'));
1887 $output .= $this->box_end();
1888 $output .= $this->box_start('modal-body', 'modal-body');
1889 $output .= html_writer::tag('p', $message);
1890 $output .= $this->box_end();
1891 $output .= $this->box_start('modal-footer', 'modal-footer');
1892 $output .= html_writer::tag('div', $this->render($continue) . $this->render($cancel), array('class' => 'buttons'));
1893 $output .= $this->box_end();
1894 $output .= $this->box_end();
1895 $output .= $this->box_end();
1900 * Returns a form with a single button.
1902 * Theme developers: DO NOT OVERRIDE! Please override function
1903 * {@link core_renderer::render_single_button()} instead.
1905 * @param string|moodle_url $url
1906 * @param string $label button text
1907 * @param string $method get or post submit method
1908 * @param array $options associative array {disabled, title, etc.}
1909 * @return string HTML fragment
1911 public function single_button($url, $label, $method='post', array $options=null) {
1912 if (!($url instanceof moodle_url)) {
1913 $url = new moodle_url($url);
1915 $button = new single_button($url, $label, $method);
1917 foreach ((array)$options as $key=>$value) {
1918 if (array_key_exists($key, $button)) {
1919 $button->$key = $value;
1923 return $this->render($button);
1927 * Renders a single button widget.
1929 * This will return HTML to display a form containing a single button.
1931 * @param single_button $button
1932 * @return string HTML fragment
1934 protected function render_single_button(single_button $button) {
1935 $attributes = array('type' => 'submit',
1936 'value' => $button->label,
1937 'disabled' => $button->disabled ? 'disabled' : null,
1938 'title' => $button->tooltip);
1940 if ($button->actions) {
1941 $id = html_writer::random_id('single_button');
1942 $attributes['id'] = $id;
1943 foreach ($button->actions as $action) {
1944 $this->add_action_handler($action, $id);
1948 // first the input element
1949 $output = html_writer::empty_tag('input', $attributes);
1951 // then hidden fields
1952 $params = $button->url->params();
1953 if ($button->method === 'post') {
1954 $params['sesskey'] = sesskey();
1956 foreach ($params as $var => $val) {
1957 $output .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $var, 'value' => $val));
1960 // then div wrapper for xhtml strictness
1961 $output = html_writer::tag('div', $output);
1963 // now the form itself around it
1964 if ($button->method === 'get') {
1965 $url = $button->url->out_omit_querystring(true); // url without params, the anchor part allowed
1967 $url = $button->url->out_omit_querystring(); // url without params, the anchor part not allowed
1970 $url = '#'; // there has to be always some action
1972 $attributes = array('method' => $button->method,
1974 'id' => $button->formid);
1975 $output = html_writer::tag('form', $output, $attributes);
1977 // and finally one more wrapper with class
1978 return html_writer::tag('div', $output, array('class' => $button->class));
1982 * Returns a form with a single select widget.
1984 * Theme developers: DO NOT OVERRIDE! Please override function
1985 * {@link core_renderer::render_single_select()} instead.
1987 * @param moodle_url $url form action target, includes hidden fields
1988 * @param string $name name of selection field - the changing parameter in url
1989 * @param array $options list of options
1990 * @param string $selected selected element
1991 * @param array $nothing
1992 * @param string $formid
1993 * @param array $attributes other attributes for the single select
1994 * @return string HTML fragment
1996 public function single_select($url, $name, array $options, $selected = '',
1997 $nothing = array('' => 'choosedots'), $formid = null, $attributes = array()) {
1998 if (!($url instanceof moodle_url)) {
1999 $url = new moodle_url($url);
2001 $select = new single_select($url, $name, $options, $selected, $nothing, $formid);
2003 if (array_key_exists('label', $attributes)) {
2004 $select->set_label($attributes['label']);
2005 unset($attributes['label']);
2007 $select->attributes = $attributes;
2009 return $this->render($select);
2013 * Returns a dataformat selection and download form
2015 * @param string $label A text label
2016 * @param moodle_url|string $base The download page url
2017 * @param string $name The query param which will hold the type of the download
2018 * @param array $params Extra params sent to the download page
2019 * @return string HTML fragment
2021 public function download_dataformat_selector($label, $base, $name = 'dataformat', $params = array()) {
2023 $formats = core_plugin_manager::instance()->get_plugins_of_type('dataformat');
2025 foreach ($formats as $format) {
2026 if ($format->is_enabled()) {
2028 'value' => $format->name,
2029 'label' => get_string('dataformat', $format->component),
2033 $hiddenparams = array();
2034 foreach ($params as $key => $value) {
2035 $hiddenparams[] = array(
2044 'params' => $hiddenparams,
2045 'options' => $options,
2046 'sesskey' => sesskey(),
2047 'submit' => get_string('download'),
2050 return $this->render_from_template('core/dataformat_selector', $data);
2055 * Internal implementation of single_select rendering
2057 * @param single_select $select
2058 * @return string HTML fragment
2060 protected function render_single_select(single_select $select) {
2061 return $this->render_from_template('core/single_select', $select->export_for_template($this));
2065 * Returns a form with a url select widget.
2067 * Theme developers: DO NOT OVERRIDE! Please override function
2068 * {@link core_renderer::render_url_select()} instead.
2070 * @param array $urls list of urls - array('/course/view.php?id=1'=>'Frontpage', ....)
2071 * @param string $selected selected element
2072 * @param array $nothing
2073 * @param string $formid
2074 * @return string HTML fragment
2076 public function url_select(array $urls, $selected, $nothing = array('' => 'choosedots'), $formid = null) {
2077 $select = new url_select($urls, $selected, $nothing, $formid);
2078 return $this->render($select);
2082 * Internal implementation of url_select rendering
2084 * @param url_select $select
2085 * @return string HTML fragment
2087 protected function render_url_select(url_select $select) {
2088 return $this->render_from_template('core/url_select', $select->export_for_template($this));
2092 * Returns a string containing a link to the user documentation.
2093 * Also contains an icon by default. Shown to teachers and admin only.
2095 * @param string $path The page link after doc root and language, no leading slash.
2096 * @param string $text The text to be displayed for the link
2097 * @param boolean $forcepopup Whether to force a popup regardless of the value of $CFG->doctonewwindow
2100 public function doc_link($path, $text = '', $forcepopup = false) {
2103 $icon = $this->pix_icon('docs', '', 'moodle', array('class'=>'iconhelp icon-pre', 'role'=>'presentation'));
2105 $url = new moodle_url(get_docs_url($path));
2107 $attributes = array('href'=>$url);
2108 if (!empty($CFG->doctonewwindow) || $forcepopup) {
2109 $attributes['class'] = 'helplinkpopup';
2112 return html_writer::tag('a', $icon.$text, $attributes);
2116 * Return HTML for an image_icon.
2118 * Theme developers: DO NOT OVERRIDE! Please override function
2119 * {@link core_renderer::render_image_icon()} instead.
2121 * @param string $pix short pix name
2122 * @param string $alt mandatory alt attribute
2123 * @param string $component standard compoennt name like 'moodle', 'mod_forum', etc.
2124 * @param array $attributes htm lattributes
2125 * @return string HTML fragment
2127 public function image_icon($pix, $alt, $component='moodle', array $attributes = null) {
2128 $icon = new image_icon($pix, $alt, $component, $attributes);
2129 return $this->render($icon);
2133 * Renders a pix_icon widget and returns the HTML to display it.
2135 * @param image_icon $icon
2136 * @return string HTML fragment
2138 protected function render_image_icon(image_icon $icon) {
2139 $system = \core\output\icon_system::instance(\core\output\icon_system::STANDARD);
2140 return $system->render_pix_icon($this, $icon);
2144 * Return HTML for a pix_icon.
2146 * Theme developers: DO NOT OVERRIDE! Please override function
2147 * {@link core_renderer::render_pix_icon()} instead.
2149 * @param string $pix short pix name
2150 * @param string $alt mandatory alt attribute
2151 * @param string $component standard compoennt name like 'moodle', 'mod_forum', etc.
2152 * @param array $attributes htm lattributes
2153 * @return string HTML fragment
2155 public function pix_icon($pix, $alt, $component='moodle', array $attributes = null) {
2156 $icon = new pix_icon($pix, $alt, $component, $attributes);
2157 return $this->render($icon);
2161 * Renders a pix_icon widget and returns the HTML to display it.
2163 * @param pix_icon $icon
2164 * @return string HTML fragment
2166 protected function render_pix_icon(pix_icon $icon) {
2167 $system = \core\output\icon_system::instance();
2168 return $system->render_pix_icon($this, $icon);
2172 * Return HTML to display an emoticon icon.
2174 * @param pix_emoticon $emoticon
2175 * @return string HTML fragment
2177 protected function render_pix_emoticon(pix_emoticon $emoticon) {
2178 $system = \core\output\icon_system::instance(\core\output\icon_system::STANDARD);
2179 return $system->render_pix_icon($this, $emoticon);
2183 * Produces the html that represents this rating in the UI
2185 * @param rating $rating the page object on which this rating will appear
2188 function render_rating(rating $rating) {
2191 if ($rating->settings->aggregationmethod == RATING_AGGREGATE_NONE) {
2192 return null;//ratings are turned off
2195 $ratingmanager = new rating_manager();
2196 // Initialise the JavaScript so ratings can be done by AJAX.
2197 $ratingmanager->initialise_rating_javascript($this->page);
2199 $strrate = get_string("rate", "rating");
2200 $ratinghtml = ''; //the string we'll return
2202 // permissions check - can they view the aggregate?
2203 if ($rating->user_can_view_aggregate()) {
2205 $aggregatelabel = $ratingmanager->get_aggregate_label($rating->settings->aggregationmethod);
2206 $aggregatestr = $rating->get_aggregate_string();
2208 $aggregatehtml = html_writer::tag('span', $aggregatestr, array('id' => 'ratingaggregate'.$rating->itemid, 'class' => 'ratingaggregate')).' ';
2209 if ($rating->count > 0) {
2210 $countstr = "({$rating->count})";
2214 $aggregatehtml .= html_writer::tag('span', $countstr, array('id'=>"ratingcount{$rating->itemid}", 'class' => 'ratingcount')).' ';
2216 $ratinghtml .= html_writer::tag('span', $aggregatelabel, array('class'=>'rating-aggregate-label'));
2217 if ($rating->settings->permissions->viewall && $rating->settings->pluginpermissions->viewall) {
2219 $nonpopuplink = $rating->get_view_ratings_url();
2220 $popuplink = $rating->get_view_ratings_url(true);
2222 $action = new popup_action('click', $popuplink, 'ratings', array('height' => 400, 'width' => 600));
2223 $ratinghtml .= $this->action_link($nonpopuplink, $aggregatehtml, $action);
2225 $ratinghtml .= $aggregatehtml;
2230 // if the item doesn't belong to the current user, the user has permission to rate
2231 // and we're within the assessable period
2232 if ($rating->user_can_rate()) {
2234 $rateurl = $rating->get_rate_url();
2235 $inputs = $rateurl->params();
2237 //start the rating form
2239 'id' => "postrating{$rating->itemid}",
2240 'class' => 'postratingform',
2242 'action' => $rateurl->out_omit_querystring()
2244 $formstart = html_writer::start_tag('form', $formattrs);
2245 $formstart .= html_writer::start_tag('div', array('class' => 'ratingform'));
2247 // add the hidden inputs
2248 foreach ($inputs as $name => $value) {
2249 $attributes = array('type' => 'hidden', 'class' => 'ratinginput', 'name' => $name, 'value' => $value);
2250 $formstart .= html_writer::empty_tag('input', $attributes);
2253 if (empty($ratinghtml)) {
2254 $ratinghtml .= $strrate.': ';
2256 $ratinghtml = $formstart.$ratinghtml;
2258 $scalearray = array(RATING_UNSET_RATING => $strrate.'...') + $rating->settings->scale->scaleitems;
2259 $scaleattrs = array('class'=>'postratingmenu ratinginput','id'=>'menurating'.$rating->itemid);
2260 $ratinghtml .= html_writer::label($rating->rating, 'menurating'.$rating->itemid, false, array('class' => 'accesshide'));
2261 $ratinghtml .= html_writer::select($scalearray, 'rating', $rating->rating, false, $scaleattrs);
2263 //output submit button
2264 $ratinghtml .= html_writer::start_tag('span', array('class'=>"ratingsubmit"));
2266 $attributes = array('type' => 'submit', 'class' => 'postratingmenusubmit', 'id' => 'postratingsubmit'.$rating->itemid, 'value' => s(get_string('rate', 'rating')));
2267 $ratinghtml .= html_writer::empty_tag('input', $attributes);
2269 if (!$rating->settings->scale->isnumeric) {
2270 // If a global scale, try to find current course ID from the context
2271 if (empty($rating->settings->scale->courseid) and $coursecontext = $rating->context->get_course_context(false)) {
2272 $courseid = $coursecontext->instanceid;
2274 $courseid = $rating->settings->scale->courseid;
2276 $ratinghtml .= $this->help_icon_scale($courseid, $rating->settings->scale);
2278 $ratinghtml .= html_writer::end_tag('span');
2279 $ratinghtml .= html_writer::end_tag('div');
2280 $ratinghtml .= html_writer::end_tag('form');
2287 * Centered heading with attached help button (same title text)
2288 * and optional icon attached.
2290 * @param string $text A heading text
2291 * @param string $helpidentifier The keyword that defines a help page
2292 * @param string $component component name
2293 * @param string|moodle_url $icon
2294 * @param string $iconalt icon alt text
2295 * @param int $level The level of importance of the heading. Defaulting to 2
2296 * @param string $classnames A space-separated list of CSS classes. Defaulting to null
2297 * @return string HTML fragment
2299 public function heading_with_help($text, $helpidentifier, $component = 'moodle', $icon = '', $iconalt = '', $level = 2, $classnames = null) {
2302 $image = $this->pix_icon($icon, $iconalt, $component, array('class'=>'icon iconlarge'));
2306 if ($helpidentifier) {
2307 $help = $this->help_icon($helpidentifier, $component);
2310 return $this->heading($image.$text.$help, $level, $classnames);
2314 * Returns HTML to display a help icon.
2316 * @deprecated since Moodle 2.0
2318 public function old_help_icon($helpidentifier, $title, $component = 'moodle', $linktext = '') {
2319 throw new coding_exception('old_help_icon() can not be used any more, please see help_icon().');
2323 * Returns HTML to display a help icon.
2325 * Theme developers: DO NOT OVERRIDE! Please override function
2326 * {@link core_renderer::render_help_icon()} instead.
2328 * @param string $identifier The keyword that defines a help page
2329 * @param string $component component name
2330 * @param string|bool $linktext true means use $title as link text, string means link text value
2331 * @return string HTML fragment
2333 public function help_icon($identifier, $component = 'moodle', $linktext = '') {
2334 $icon = new help_icon($identifier, $component);
2335 $icon->diag_strings();
2336 if ($linktext === true) {
2337 $icon->linktext = get_string($icon->identifier, $icon->component);
2338 } else if (!empty($linktext)) {
2339 $icon->linktext = $linktext;
2341 return $this->render($icon);
2345 * Implementation of user image rendering.
2347 * @param help_icon $helpicon A help icon instance
2348 * @return string HTML fragment
2350 protected function render_help_icon(help_icon $helpicon) {
2351 return $this->render_from_template('core/help_icon', $helpicon->export_for_template($this));
2355 * Returns HTML to display a scale help icon.
2357 * @param int $courseid
2358 * @param stdClass $scale instance
2359 * @return string HTML fragment
2361 public function help_icon_scale($courseid, stdClass $scale) {
2364 $title = get_string('helpprefix2', '', $scale->name) .' ('.get_string('newwindow').')';
2366 $icon = $this->pix_icon('help', get_string('scales'), 'moodle', array('class'=>'iconhelp'));
2368 $scaleid = abs($scale->id);
2370 $link = new moodle_url('/course/scales.php', array('id' => $courseid, 'list' => true, 'scaleid' => $scaleid));
2371 $action = new popup_action('click', $link, 'ratingscale');
2373 return html_writer::tag('span', $this->action_link($link, $icon, $action), array('class' => 'helplink'));
2377 * Creates and returns a spacer image with optional line break.
2379 * @param array $attributes Any HTML attributes to add to the spaced.
2380 * @param bool $br Include a BR after the spacer.... DON'T USE THIS. Don't be
2381 * laxy do it with CSS which is a much better solution.
2382 * @return string HTML fragment
2384 public function spacer(array $attributes = null, $br = false) {
2385 $attributes = (array)$attributes;
2386 if (empty($attributes['width'])) {
2387 $attributes['width'] = 1;
2389 if (empty($attributes['height'])) {
2390 $attributes['height'] = 1;
2392 $attributes['class'] = 'spacer';
2394 $output = $this->pix_icon('spacer', '', 'moodle', $attributes);
2397 $output .= '<br />';
2404 * Returns HTML to display the specified user's avatar.
2406 * User avatar may be obtained in two ways:
2408 * // Option 1: (shortcut for simple cases, preferred way)
2409 * // $user has come from the DB and has fields id, picture, imagealt, firstname and lastname
2410 * $OUTPUT->user_picture($user, array('popup'=>true));
2413 * $userpic = new user_picture($user);
2414 * // Set properties of $userpic
2415 * $userpic->popup = true;
2416 * $OUTPUT->render($userpic);
2419 * Theme developers: DO NOT OVERRIDE! Please override function
2420 * {@link core_renderer::render_user_picture()} instead.
2422 * @param stdClass $user Object with at least fields id, picture, imagealt, firstname, lastname
2423 * If any of these are missing, the database is queried. Avoid this
2424 * if at all possible, particularly for reports. It is very bad for performance.
2425 * @param array $options associative array with user picture options, used only if not a user_picture object,
2427 * - courseid=$this->page->course->id (course id of user profile in link)
2428 * - size=35 (size of image)
2429 * - link=true (make image clickable - the link leads to user profile)
2430 * - popup=false (open in popup)
2431 * - alttext=true (add image alt attribute)
2432 * - class = image class attribute (default 'userpicture')
2433 * - visibletoscreenreaders=true (whether to be visible to screen readers)
2434 * - includefullname=false (whether to include the user's full name together with the user picture)
2435 * @return string HTML fragment
2437 public function user_picture(stdClass $user, array $options = null) {
2438 $userpicture = new user_picture($user);
2439 foreach ((array)$options as $key=>$value) {
2440 if (array_key_exists($key, $userpicture)) {
2441 $userpicture->$key = $value;
2444 return $this->render($userpicture);
2448 * Internal implementation of user image rendering.
2450 * @param user_picture $userpicture
2453 protected function render_user_picture(user_picture $userpicture) {
2456 $user = $userpicture->user;
2458 if ($userpicture->alttext) {
2459 if (!empty($user->imagealt)) {
2460 $alt = $user->imagealt;
2462 $alt = get_string('pictureof', '', fullname($user));
2468 if (empty($userpicture->size)) {
2470 } else if ($userpicture->size === true or $userpicture->size == 1) {
2473 $size = $userpicture->size;
2476 $class = $userpicture->class;
2478 if ($user->picture == 0) {
2479 $class .= ' defaultuserpic';
2482 $src = $userpicture->get_url($this->page, $this);
2484 $attributes = array('src'=>$src, 'alt'=>$alt, 'title'=>$alt, 'class'=>$class, 'width'=>$size, 'height'=>$size);
2485 if (!$userpicture->visibletoscreenreaders) {
2486 $attributes['role'] = 'presentation';
2489 // get the image html output fisrt
2490 $output = html_writer::empty_tag('img', $attributes);
2492 // Show fullname together with the picture when desired.
2493 if ($userpicture->includefullname) {
2494 $output .= fullname($userpicture->user);
2497 // then wrap it in link if needed
2498 if (!$userpicture->link) {
2502 if (empty($userpicture->courseid)) {
2503 $courseid = $this->page->course->id;
2505 $courseid = $userpicture->courseid;
2508 if ($courseid == SITEID) {
2509 $url = new moodle_url('/user/profile.php', array('id' => $user->id));
2511 $url = new moodle_url('/user/view.php', array('id' => $user->id, 'course' => $courseid));
2514 $attributes = array('href'=>$url);
2515 if (!$userpicture->visibletoscreenreaders) {
2516 $attributes['tabindex'] = '-1';
2517 $attributes['aria-hidden'] = 'true';
2520 if ($userpicture->popup) {
2521 $id = html_writer::random_id('userpicture');
2522 $attributes['id'] = $id;
2523 $this->add_action_handler(new popup_action('click', $url), $id);
2526 return html_writer::tag('a', $output, $attributes);
2530 * Internal implementation of file tree viewer items rendering.
2535 public function htmllize_file_tree($dir) {
2536 if (empty($dir['subdirs']) and empty($dir['files'])) {
2540 foreach ($dir['subdirs'] as $subdir) {
2541 $result .= '<li>'.s($subdir['dirname']).' '.$this->htmllize_file_tree($subdir).'</li>';
2543 foreach ($dir['files'] as $file) {
2544 $filename = $file->get_filename();
2545 $result .= '<li><span>'.html_writer::link($file->fileurl, $filename).'</span></li>';
2553 * Returns HTML to display the file picker
2556 * $OUTPUT->file_picker($options);
2559 * Theme developers: DO NOT OVERRIDE! Please override function
2560 * {@link core_renderer::render_file_picker()} instead.
2562 * @param array $options associative array with file manager options
2566 * client_id=>uniqid(),
2567 * acepted_types=>'*',
2568 * return_types=>FILE_INTERNAL,
2569 * context=>$PAGE->context
2570 * @return string HTML fragment
2572 public function file_picker($options) {
2573 $fp = new file_picker($options);
2574 return $this->render($fp);
2578 * Internal implementation of file picker rendering.
2580 * @param file_picker $fp
2583 public function render_file_picker(file_picker $fp) {
2584 global $CFG, $OUTPUT, $USER;
2585 $options = $fp->options;
2586 $client_id = $options->client_id;
2587 $strsaved = get_string('filesaved', 'repository');
2588 $straddfile = get_string('openpicker', 'repository');
2589 $strloading = get_string('loading', 'repository');
2590 $strdndenabled = get_string('dndenabled_inbox', 'moodle');
2591 $strdroptoupload = get_string('droptoupload', 'moodle');
2592 $icon_progress = $OUTPUT->pix_icon('i/loading_small', $strloading).'';
2594 $currentfile = $options->currentfile;
2595 if (empty($currentfile)) {
2598 $currentfile .= ' - ';
2600 if ($options->maxbytes) {
2601 $size = $options->maxbytes;
2603 $size = get_max_upload_file_size();
2608 $maxsize = get_string('maxfilesize', 'moodle', display_size($size));
2610 if ($options->buttonname) {
2611 $buttonname = ' name="' . $options->buttonname . '"';
2616 <div class="filemanager-loading mdl-align" id='filepicker-loading-{$client_id}'>
2619 <div id="filepicker-wrapper-{$client_id}" class="mdl-left" style="display:none">
2621 <input type="button" class="btn btn-secondary fp-btn-choose" id="filepicker-button-{$client_id}" value="{$straddfile}"{$buttonname}/>
2622 <span> $maxsize </span>
2625 if ($options->env != 'url') {
2627 <div id="file_info_{$client_id}" class="mdl-left filepicker-filelist" style="position: relative">
2628 <div class="filepicker-filename">
2629 <div class="filepicker-container">$currentfile<div class="dndupload-message">$strdndenabled <br/><div class="dndupload-arrow"></div></div></div>
2630 <div class="dndupload-progressbars"></div>
2632 <div><div class="dndupload-target">{$strdroptoupload}<br/><div class="dndupload-arrow"></div></div></div>
2641 * Returns HTML to display the 'Update this Modulename' button that appears on module pages.
2643 * @deprecated since Moodle 3.2
2645 * @param string $cmid the course_module id.
2646 * @param string $modulename the module name, eg. "forum", "quiz" or "workshop"
2647 * @return string the HTML for the button, if this user has permission to edit it, else an empty string.
2649 public function update_module_button($cmid, $modulename) {
2652 debugging('core_renderer::update_module_button() has been deprecated and should not be used anymore. Activity modules ' .
2653 'should not add the edit module button, the link is already available in the Administration block. Themes can choose ' .
2654 'to display the link in the buttons row consistently for all module types.', DEBUG_DEVELOPER);
2656 if (has_capability('moodle/course:manageactivities', context_module::instance($cmid))) {
2657 $modulename = get_string('modulename', $modulename);
2658 $string = get_string('updatethis', '', $modulename);
2659 $url = new moodle_url("$CFG->wwwroot/course/mod.php", array('update' => $cmid, 'return' => true, 'sesskey' => sesskey()));
2660 return $this->single_button($url, $string);
2667 * Returns HTML to display a "Turn editing on/off" button in a form.
2669 * @param moodle_url $url The URL + params to send through when clicking the button
2670 * @return string HTML the button
2672 public function edit_button(moodle_url $url) {
2674 $url->param('sesskey', sesskey());
2675 if ($this->page->user_is_editing()) {
2676 $url->param('edit', 'off');
2677 $editstring = get_string('turneditingoff');
2679 $url->param('edit', 'on');
2680 $editstring = get_string('turneditingon');
2683 return $this->single_button($url, $editstring);
2687 * Returns HTML to display a simple button to close a window
2689 * @param string $text The lang string for the button's label (already output from get_string())
2690 * @return string html fragment
2692 public function close_window_button($text='') {
2694 $text = get_string('closewindow');
2696 $button = new single_button(new moodle_url('#'), $text, 'get');
2697 $button->add_action(new component_action('click', 'close_window'));
2699 return $this->container($this->render($button), 'closewindow');
2703 * Output an error message. By default wraps the error message in <span class="error">.
2704 * If the error message is blank, nothing is output.
2706 * @param string $message the error message.
2707 * @return string the HTML to output.
2709 public function error_text($message) {
2710 if (empty($message)) {
2713 $message = $this->pix_icon('i/warning', get_string('error'), '', array('class' => 'icon icon-pre', 'title'=>'')) . $message;
2714 return html_writer::tag('span', $message, array('class' => 'error'));
2718 * Do not call this function directly.
2720 * To terminate the current script with a fatal error, call the {@link print_error}
2721 * function, or throw an exception. Doing either of those things will then call this
2722 * function to display the error, before terminating the execution.
2724 * @param string $message The message to output
2725 * @param string $moreinfourl URL where more info can be found about the error
2726 * @param string $link Link for the Continue button
2727 * @param array $backtrace The execution backtrace
2728 * @param string $debuginfo Debugging information
2729 * @return string the HTML to output.
2731 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null, $errorcode = "") {
2737 if ($this->has_started()) {
2738 // we can not always recover properly here, we have problems with output buffering,
2739 // html tables, etc.
2740 $output .= $this->opencontainers->pop_all_but_last();
2743 // It is really bad if library code throws exception when output buffering is on,
2744 // because the buffered text would be printed before our start of page.
2745 // NOTE: this hack might be behave unexpectedly in case output buffering is enabled in PHP.ini
2746 error_reporting(0); // disable notices from gzip compression, etc.
2747 while (ob_get_level() > 0) {
2748 $buff = ob_get_clean();
2749 if ($buff === false) {
2754 error_reporting($CFG->debug);
2756 // Output not yet started.
2757 $protocol = (isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0');
2758 if (empty($_SERVER['HTTP_RANGE'])) {
2759 @header($protocol . ' 404 Not Found');
2760 } else if (core_useragent::check_safari_ios_version(602) && !empty($_SERVER['HTTP_X_PLAYBACK_SESSION_ID'])) {
2761 // Coax iOS 10 into sending the session cookie.
2762 @header($protocol . ' 403 Forbidden');
2764 // Must stop byteserving attempts somehow,
2765 // this is weird but Chrome PDF viewer can be stopped only with 407!
2766 @header($protocol . ' 407 Proxy Authentication Required');
2769 $this->page->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
2770 $this->page->set_url('/'); // no url
2771 //$this->page->set_pagelayout('base'); //TODO: MDL-20676 blocks on error pages are weird, unfortunately it somehow detect the pagelayout from URL :-(
2772 $this->page->set_title(get_string('error'));
2773 $this->page->set_heading($this->page->course->fullname);
2774 $output .= $this->header();
2777 $message = '<p class="errormessage">' . $message . '</p>'.
2778 '<p class="errorcode"><a href="' . $moreinfourl . '">' .
2779 get_string('moreinformation') . '</a></p>';
2780 if (empty($CFG->rolesactive)) {
2781 $message .= '<p class="errormessage">' . get_string('installproblem', 'error') . '</p>';
2782 //It is usually not possible to recover from errors triggered during installation, you may need to create a new database or use a different database prefix for new installation.
2784 $output .= $this->box($message, 'errorbox', null, array('data-rel' => 'fatalerror'));
2786 if ($CFG->debugdeveloper) {
2787 if (!empty($debuginfo)) {
2788 $debuginfo = s($debuginfo); // removes all nasty JS
2789 $debuginfo = str_replace("\n", '<br />', $debuginfo); // keep newlines
2790 $output .= $this->notification('<strong>Debug info:</strong> '.$debuginfo, 'notifytiny');
2792 if (!empty($backtrace)) {
2793 $output .= $this->notification('<strong>Stack trace:</strong> '.format_backtrace($backtrace), 'notifytiny');
2795 if ($obbuffer !== '' ) {
2796 $output .= $this->notification('<strong>Output buffer:</strong> '.s($obbuffer), 'notifytiny');
2800 if (empty($CFG->rolesactive)) {
2801 // continue does not make much sense if moodle is not installed yet because error is most probably not recoverable
2802 } else if (!empty($link)) {
2803 $output .= $this->continue_button($link);
2806 $output .= $this->footer();
2808 // Padding to encourage IE to display our error page, rather than its own.
2809 $output .= str_repeat(' ', 512);
2815 * Output a notification (that is, a status message about something that has just happened).
2817 * Note: \core\notification::add() may be more suitable for your usage.
2819 * @param string $message The message to print out.
2820 * @param string $type The type of notification. See constants on \core\output\notification.
2821 * @return string the HTML to output.
2823 public function notification($message, $type = null) {
2826 'success' => \core\output\notification::NOTIFY_SUCCESS,
2827 'info' => \core\output\notification::NOTIFY_INFO,
2828 'warning' => \core\output\notification::NOTIFY_WARNING,
2829 'error' => \core\output\notification::NOTIFY_ERROR,
2831 // Legacy types mapped to current types.
2832 'notifyproblem' => \core\output\notification::NOTIFY_ERROR,
2833 'notifytiny' => \core\output\notification::NOTIFY_ERROR,
2834 'notifyerror' => \core\output\notification::NOTIFY_ERROR,
2835 'notifysuccess' => \core\output\notification::NOTIFY_SUCCESS,
2836 'notifymessage' => \core\output\notification::NOTIFY_INFO,
2837 'notifyredirect' => \core\output\notification::NOTIFY_INFO,
2838 'redirectmessage' => \core\output\notification::NOTIFY_INFO,
2844 if (strpos($type, ' ') === false) {
2845 // No spaces in the list of classes, therefore no need to loop over and determine the class.
2846 if (isset($typemappings[$type])) {
2847 $type = $typemappings[$type];
2849 // The value provided did not match a known type. It must be an extra class.
2850 $extraclasses = [$type];
2853 // Identify what type of notification this is.
2854 $classarray = explode(' ', self::prepare_classes($type));
2856 // Separate out the type of notification from the extra classes.
2857 foreach ($classarray as $class) {
2858 if (isset($typemappings[$class])) {
2859 $type = $typemappings[$class];
2861 $extraclasses[] = $class;
2867 $notification = new \core\output\notification($message, $type);
2868 if (count($extraclasses)) {
2869 $notification->set_extra_classes($extraclasses);
2872 // Return the rendered template.
2873 return $this->render_from_template($notification->get_template_name(), $notification->export_for_template($this));
2877 * Output a notification at a particular level - in this case, NOTIFY_PROBLEM.
2879 * @param string $message the message to print out
2880 * @return string HTML fragment.
2881 * @deprecated since Moodle 3.1 MDL-30811 - please do not use this function any more.
2882 * @todo MDL-53113 This will be removed in Moodle 3.5.
2883 * @see \core\output\notification
2885 public function notify_problem($message) {
2886 debugging(__FUNCTION__ . ' is deprecated.' .
2887 'Please use \core\notification::add, or \core\output\notification as required',
2889 $n = new \core\output\notification($message, \core\output\notification::NOTIFY_ERROR);
2890 return $this->render($n);
2894 * Output a notification at a particular level - in this case, NOTIFY_SUCCESS.
2896 * @param string $message the message to print out
2897 * @return string HTML fragment.
2898 * @deprecated since Moodle 3.1 MDL-30811 - please do not use this function any more.
2899 * @todo MDL-53113 This will be removed in Moodle 3.5.
2900 * @see \core\output\notification
2902 public function notify_success($message) {
2903 debugging(__FUNCTION__ . ' is deprecated.' .
2904 'Please use \core\notification::add, or \core\output\notification as required',
2906 $n = new \core\output\notification($message, \core\output\notification::NOTIFY_SUCCESS);
2907 return $this->render($n);
2911 * Output a notification at a particular level - in this case, NOTIFY_MESSAGE.
2913 * @param string $message the message to print out
2914 * @return string HTML fragment.
2915 * @deprecated since Moodle 3.1 MDL-30811 - please do not use this function any more.
2916 * @todo MDL-53113 This will be removed in Moodle 3.5.
2917 * @see \core\output\notification
2919 public function notify_message($message) {
2920 debugging(__FUNCTION__ . ' is deprecated.' .
2921 'Please use \core\notification::add, or \core\output\notification as required',
2923 $n = new \core\output\notification($message, \core\output\notification::NOTIFY_INFO);
2924 return $this->render($n);
2928 * Output a notification at a particular level - in this case, NOTIFY_REDIRECT.
2930 * @param string $message the message to print out
2931 * @return string HTML fragment.
2932 * @deprecated since Moodle 3.1 MDL-30811 - please do not use this function any more.
2933 * @todo MDL-53113 This will be removed in Moodle 3.5.
2934 * @see \core\output\notification
2936 public function notify_redirect($message) {
2937 debugging(__FUNCTION__ . ' is deprecated.' .
2938 'Please use \core\notification::add, or \core\output\notification as required',
2940 $n = new \core\output\notification($message, \core\output\notification::NOTIFY_INFO);
2941 return $this->render($n);
2945 * Render a notification (that is, a status message about something that has
2948 * @param \core\output\notification $notification the notification to print out
2949 * @return string the HTML to output.
2951 protected function render_notification(\core\output\notification $notification) {
2952 return $this->render_from_template($notification->get_template_name(), $notification->export_for_template($this));
2956 * Returns HTML to display a continue button that goes to a particular URL.
2958 * @param string|moodle_url $url The url the button goes to.
2959 * @return string the HTML to output.
2961 public function continue_button($url) {
2962 if (!($url instanceof moodle_url)) {
2963 $url = new moodle_url($url);
2965 $button = new single_button($url, get_string('continue'), 'get', true);
2966 $button->class = 'continuebutton';
2968 return $this->render($button);
2972 * Returns HTML to display a single paging bar to provide access to other pages (usually in a search)
2974 * Theme developers: DO NOT OVERRIDE! Please override function
2975 * {@link core_renderer::render_paging_bar()} instead.
2977 * @param int $totalcount The total number of entries available to be paged through
2978 * @param int $page The page you are currently viewing
2979 * @param int $perpage The number of entries that should be shown per page
2980 * @param string|moodle_url $baseurl url of the current page, the $pagevar parameter is added
2981 * @param string $pagevar name of page parameter that holds the page number
2982 * @return string the HTML to output.
2984 public function paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar = 'page') {
2985 $pb = new paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar);
2986 return $this->render($pb);
2990 * Internal implementation of paging bar rendering.
2992 * @param paging_bar $pagingbar
2995 protected function render_paging_bar(paging_bar $pagingbar) {
2997 $pagingbar = clone($pagingbar);
2998 $pagingbar->prepare($this, $this->page, $this->target);
3000 if ($pagingbar->totalcount > $pagingbar->perpage) {
3001 $output .= get_string('page') . ':';
3003 if (!empty($pagingbar->previouslink)) {
3004 $output .= ' (' . $pagingbar->previouslink . ') ';
3007 if (!empty($pagingbar->firstlink)) {
3008 $output .= ' ' . $pagingbar->firstlink . ' ...';
3011 foreach ($pagingbar->pagelinks as $link) {
3012 $output .= " $link";
3015 if (!empty($pagingbar->lastlink)) {
3016 $output .= ' ... ' . $pagingbar->lastlink . ' ';
3019 if (!empty($pagingbar->nextlink)) {
3020 $output .= ' (' . $pagingbar->nextlink . ')';
3024 return html_writer::tag('div', $output, array('class' => 'paging'));
3028 * Returns HTML to display initials bar to provide access to other pages (usually in a search)
3030 * @param string $current the currently selected letter.
3031 * @param string $class class name to add to this initial bar.
3032 * @param string $title the name to put in front of this initial bar.
3033 * @param string $urlvar URL parameter name for this initial.
3034 * @param string $url URL object.
3035 * @param array $alpha of letters in the alphabet.
3036 * @return string the HTML to output.
3038 public function initials_bar($current, $class, $title, $urlvar, $url, $alpha = null) {
3039 $ib = new initials_bar($current, $class, $title, $urlvar, $url, $alpha);
3040 return $this->render($ib);
3044 * Internal implementation of initials bar rendering.
3046 * @param initials_bar $initialsbar
3049 protected function render_initials_bar(initials_bar $initialsbar) {
3050 return $this->render_from_template('core/initials_bar', $initialsbar->export_for_template($this));
3054 * Output the place a skip link goes to.
3056 * @param string $id The target name from the corresponding $PAGE->requires->skip_link_to($target) call.
3057 * @return string the HTML to output.
3059 public function skip_link_target($id = null) {
3060 return html_writer::span('', '', array('id' => $id));
3066 * @param string $text The text of the heading
3067 * @param int $level The level of importance of the heading. Defaulting to 2
3068 * @param string $classes A space-separated list of CSS classes. Defaulting to null
3069 * @param string $id An optional ID
3070 * @return string the HTML to output.
3072 public function heading($text, $level = 2, $classes = null, $id = null) {
3073 $level = (integer) $level;
3074 if ($level < 1 or $level > 6) {
3075 throw new coding_exception('Heading level must be an integer between 1 and 6.');
3077 return html_writer::tag('h' . $level, $text, array('id' => $id, 'class' => renderer_base::prepare_classes($classes)));
3083 * @param string $contents The contents of the box
3084 * @param string $classes A space-separated list of CSS classes
3085 * @param string $id An optional ID
3086 * @param array $attributes An array of other attributes to give the box.
3087 * @return string the HTML to output.
3089 public function box($contents, $classes = 'generalbox', $id = null, $attributes = array()) {
3090 return $this->box_start($classes, $id, $attributes) . $contents . $this->box_end();
3094 * Outputs the opening section of a box.
3096 * @param string $classes A space-separated list of CSS classes
3097 * @param string $id An optional ID
3098 * @param array $attributes An array of other attributes to give the box.
3099 * @return string the HTML to output.
3101 public function box_start($classes = 'generalbox', $id = null, $attributes = array()) {
3102 $this->opencontainers->push('box', html_writer::end_tag('div'));
3103 $attributes['id'] = $id;
3104 $attributes['class'] = 'box ' . renderer_base::prepare_classes($classes);
3105 return html_writer::start_tag('div', $attributes);
3109 * Outputs the closing section of a box.
3111 * @return string the HTML to output.
3113 public function box_end() {
3114 return $this->opencontainers->pop('box');
3118 * Outputs a container.
3120 * @param string $contents The contents of the box
3121 * @param string $classes A space-separated list of CSS classes
3122 * @param string $id An optional ID
3123 * @return string the HTML to output.
3125 public function container($contents, $classes = null, $id = null) {
3126 return $this->container_start($classes, $id) . $contents . $this->container_end();
3130 * Outputs the opening section of a container.
3132 * @param string $classes A space-separated list of CSS classes
3133 * @param string $id An optional ID
3134 * @return string the HTML to output.
3136 public function container_start($classes = null, $id = null) {
3137 $this->opencontainers->push('container', html_writer::end_tag('div'));
3138 return html_writer::start_tag('div', array('id' => $id,
3139 'class' => renderer_base::prepare_classes($classes)));
3143 * Outputs the closing section of a container.
3145 * @return string the HTML to output.
3147 public function container_end() {
3148 return $this->opencontainers->pop('container');
3152 * Make nested HTML lists out of the items
3154 * The resulting list will look something like this:
3158 * <<li>><div class='tree_item parent'>(item contents)</div>
3160 * <<li>><div class='tree_item'>(item contents)</div><</li>>
3166 * @param array $items
3167 * @param array $attrs html attributes passed to the top ofs the list
3168 * @return string HTML
3170 public function tree_block_contents($items, $attrs = array()) {
3171 // exit if empty, we don't want an empty ul element
3172 if (empty($items)) {
3175 // array of nested li elements
3177 foreach ($items as $item) {
3178 // this applies to the li item which contains all child lists too
3179 $content = $item->content($this);
3180 $liclasses = array($item->get_css_type());
3181 if (!$item->forceopen || (!$item->forceopen && $item->collapse) || ($item->children->count()==0 && $item->nodetype==navigation_node::NODETYPE_BRANCH)) {
3182 $liclasses[] = 'collapsed';
3184 if ($item->isactive === true) {
3185 $liclasses[] = 'current_branch';
3187 $liattr = array('class'=>join(' ',$liclasses));
3188 // class attribute on the div item which only contains the item content
3189 $divclasses = array('tree_item');
3190 if ($item->children->count()>0 || $item->nodetype==navigation_node::NODETYPE_BRANCH) {
3191 $divclasses[] = 'branch';
3193 $divclasses[] = 'leaf';
3195 if (!empty($item->classes) && count($item->classes)>0) {
3196 $divclasses[] = join(' ', $item->classes);
3198 $divattr = array('class'=>join(' ', $divclasses));
3199 if (!empty($item->id)) {
3200 $divattr['id'] = $item->id;
3202 $content = html_writer::tag('p', $content, $divattr) . $this->tree_block_contents($item->children);
3203 if (!empty($item->preceedwithhr) && $item->preceedwithhr===true) {
3204 $content = html_writer::empty_tag('hr') . $content;
3206 $content = html_writer::tag('li', $content, $liattr);
3209 return html_writer::tag('ul', implode("\n", $lis), $attrs);
3213 * Returns a search box.
3215 * @param string $id The search box wrapper div id, defaults to an autogenerated one.
3216 * @return string HTML with the search form hidden by default.
3218 public function search_box($id = false) {
3221 // Accessing $CFG directly as using \core_search::is_global_search_enabled would
3222 // result in an extra included file for each site, even the ones where global search
3224 if (empty($CFG->enableglobalsearch) || !has_capability('moodle/search:query', context_system::instance())) {
3231 // Needs to be cleaned, we use it for the input id.
3232 $id = clean_param($id, PARAM_ALPHANUMEXT);
3235 // JS to animate the form.
3236 $this->page->requires->js_call_amd('core/search-input', 'init', array($id));
3238 $searchicon = html_writer::tag('div', $this->pix_icon('a/search', get_string('search', 'search'), 'moodle'),
3239 array('role' => 'button', 'tabindex' => 0));
3240 $formattrs = array('class' => 'search-input-form', 'action' => $CFG->wwwroot . '/search/index.php');
3241 $inputattrs = array('type' => 'text', 'name' => 'q', 'placeholder' => get_string('search', 'search'),
3242 'size' => 13, 'tabindex' => -1, 'id' => 'id_q_' . $id);
3244 $contents = html_writer::tag('label', get_string('enteryoursearchquery', 'search'),
3245 array('for' => 'id_q_' . $id, 'class' => 'accesshide')) . html_writer::tag('input', '', $inputattrs);
3246 $searchinput = html_writer::tag('form', $contents, $formattrs);
3248 return html_writer::tag('div', $searchicon . $searchinput, array('class' => 'search-input-wrapper nav-link', 'id' => $id));
3252 * Allow plugins to provide some content to be rendered in the navbar.
3253 * The plugin must define a PLUGIN_render_navbar_output function that returns
3254 * the HTML they wish to add to the navbar.
3256 * @return string HTML for the navbar
3258 public function navbar_plugin_output() {
3261 if ($pluginsfunction = get_plugins_with_function('render_navbar_output')) {
3262 foreach ($pluginsfunction as $plugintype => $plugins) {
3263 foreach ($plugins as $pluginfunction) {
3264 $output .= $pluginfunction($this);
3273 * Construct a user menu, returning HTML that can be echoed out by a
3276 * @param stdClass $user A user object, usually $USER.
3277 * @param bool $withlinks true if a dropdown should be built.
3278 * @return string HTML fragment.
3280 public function user_menu($user = null, $withlinks = null) {
3282 require_once($CFG->dirroot . '/user/lib.php');
3284 if (is_null($user)) {
3288 // Note: this behaviour is intended to match that of core_renderer::login_info,
3289 // but should not be considered to be good practice; layout options are
3290 // intended to be theme-specific. Please don't copy this snippet anywhere else.
3291 if (is_null($withlinks)) {
3292 $withlinks = empty($this->page->layout_options['nologinlinks']);
3295 // Add a class for when $withlinks is false.
3296 $usermenuclasses = 'usermenu';
3298 $usermenuclasses .= ' withoutlinks';
3303 // If during initial install, return the empty return string.
3304 if (during_initial_install()) {
3308 $loginpage = $this->is_login_page();
3309 $loginurl = get_login_url();
3310 // If not logged in, show the typical not-logged-in string.
3311 if (!isloggedin()) {
3312 $returnstr = get_string('loggedinnot', 'moodle');
3314 $returnstr .= " (<a href=\"$loginurl\">" . get_string('login') . '</a>)';
3316 return html_writer::div(
3326 // If logged in as a guest user, show a string to that effect.
3327 if (isguestuser()) {
3328 $returnstr = get_string('loggedinasguest');
3329 if (!$loginpage && $withlinks) {
3330 $returnstr .= " (<a href=\"$loginurl\">".get_string('login').'</a>)';
3333 return html_writer::div(
3342 // Get some navigation opts.
3343 $opts = user_get_user_navigation_info($user, $this->page);
3345 $avatarclasses = "avatars";
3346 $avatarcontents = html_writer::span($opts->metadata['useravatar'], 'avatar current');
3347 $usertextcontents = $opts->metadata['userfullname'];
3350 if (!empty($opts->metadata['asotheruser'])) {
3351 $avatarcontents .= html_writer::span(
3352 $opts->metadata['realuseravatar'],
3355 $usertextcontents = $opts->metadata['realuserfullname'];
3356 $usertextcontents .= html_writer::tag(
3362 $opts->metadata['userfullname'],
3366 array('class' => 'meta viewingas')
3371 if (!empty($opts->metadata['asotherrole'])) {
3372 $role = core_text::strtolower(preg_replace('#[ ]+#', '-', trim($opts->metadata['rolename'])));
3373 $usertextcontents .= html_writer::span(
3374 $opts->metadata['rolename'],
3375 'meta role role-' . $role
3379 // User login failures.
3380 if (!empty($opts->metadata['userloginfail'])) {
3381 $usertextcontents .= html_writer::span(
3382 $opts->metadata['userloginfail'],
3383 'meta loginfailures'