3 // This file is part of Moodle - http://moodle.org/
5 // Moodle is free software: you can redistribute it and/or modify
6 // it under the terms of the GNU General Public License as published by
7 // the Free Software Foundation, either version 3 of the License, or
8 // (at your option) any later version.
10 // Moodle is distributed in the hope that it will be useful,
11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 // GNU General Public License for more details.
15 // You should have received a copy of the GNU General Public License
16 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
19 * Classes for rendering HTML output for Moodle.
21 * Please see http://docs.moodle.org/en/Developement:How_Moodle_outputs_HTML
26 * @copyright 2009 Tim Hunt
27 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
30 defined('MOODLE_INTERNAL') || die();
33 * Simple base class for Moodle renderers.
35 * Tracks the xhtml_container_stack to use, which is passed in in the constructor.
37 * Also has methods to facilitate generating HTML output.
39 * @copyright 2009 Tim Hunt
40 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
44 /** @var xhtml_container_stack the xhtml_container_stack to use. */
45 protected $opencontainers;
46 /** @var moodle_page the page we are rendering for. */
48 /** @var requested rendering target */
53 * @param moodle_page $page the page we are doing output for.
54 * @param string $target one of rendering target constants
56 public function __construct(moodle_page $page, $target) {
57 $this->opencontainers = $page->opencontainers;
59 $this->target = $target;
63 * Returns rendered widget.
64 * @param renderable $widget instance with renderable interface
67 public function render(renderable $widget) {
68 $rendermethod = 'render_'.get_class($widget);
69 if (method_exists($this, $rendermethod)) {
70 return $this->$rendermethod($widget);
72 throw new coding_exception('Can not render widget, renderer method ('.$rendermethod.') not found.');
76 * Adds JS handlers needed for event execution for one html element id
77 * @param component_action $actions
79 * @return string id of element, either original submitted or random new if not supplied
81 public function add_action_handler(component_action $action, $id=null) {
83 $id = html_writer::random_id($action->event);
85 $this->page->requires->event_handler("#$id", $action->event, $action->jsfunction, $action->jsfunctionargs);
90 * Have we started output yet?
91 * @return boolean true if the header has been printed.
93 public function has_started() {
94 return $this->page->state >= moodle_page::STATE_IN_BODY;
98 * Given an array or space-separated list of classes, prepares and returns the HTML class attribute value
99 * @param mixed $classes Space-separated string or array of classes
100 * @return string HTML class attribute value
102 public static function prepare_classes($classes) {
103 if (is_array($classes)) {
104 return implode(' ', array_unique($classes));
110 * Return the moodle_url for an image.
111 * The exact image location and extension is determined
112 * automatically by searching for gif|png|jpg|jpeg, please
113 * note there can not be diferent images with the different
114 * extension. The imagename is for historical reasons
115 * a relative path name, it may be changed later for core
116 * images. It is recommended to not use subdirectories
117 * in plugin and theme pix directories.
119 * There are three types of images:
120 * 1/ theme images - stored in theme/mytheme/pix/,
121 * use component 'theme'
122 * 2/ core images - stored in /pix/,
123 * overridden via theme/mytheme/pix_core/
124 * 3/ plugin images - stored in mod/mymodule/pix,
125 * overridden via theme/mytheme/pix_plugins/mod/mymodule/,
126 * example: pix_url('comment', 'mod_glossary')
128 * @param string $imagename the pathname of the image
129 * @param string $component full plugin name (aka component) or 'theme'
132 public function pix_url($imagename, $component = 'moodle') {
133 return $this->page->theme->pix_url($imagename, $component);
139 * Basis for all plugin renderers.
141 * @author Petr Skoda (skodak)
142 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
145 class plugin_renderer_base extends renderer_base {
147 * A reference to the current general renderer probably {@see core_renderer}
153 * Constructor method, calls the parent constructor
154 * @param moodle_page $page
155 * @param string $target one of rendering target constants
157 public function __construct(moodle_page $page, $target) {
158 $this->output = $page->get_renderer('core', null, $target);
159 parent::__construct($page, $target);
163 * Returns rendered widget.
164 * @param renderable $widget instance with renderable interface
167 public function render(renderable $widget) {
168 $rendermethod = 'render_'.get_class($widget);
169 if (method_exists($this, $rendermethod)) {
170 return $this->$rendermethod($widget);
172 // pass to core renderer if method not found here
173 return $this->output->render($widget);
177 * Magic method used to pass calls otherwise meant for the standard renderer
178 * to it to ensure we don't go causing unnecessary grief.
180 * @param string $method
181 * @param array $arguments
184 public function __call($method, $arguments) {
185 if (method_exists('renderer_base', $method)) {
186 throw new coding_exception('Protected method called against '.__CLASS__.' :: '.$method);
188 if (method_exists($this->output, $method)) {
189 return call_user_func_array(array($this->output, $method), $arguments);
191 throw new coding_exception('Unknown method called against '.__CLASS__.' :: '.$method);
198 * The standard implementation of the core_renderer interface.
200 * @copyright 2009 Tim Hunt
201 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
204 class core_renderer extends renderer_base {
205 /** @var string used in {@link header()}. */
206 const PERFORMANCE_INFO_TOKEN = '%%PERFORMANCEINFO%%';
207 /** @var string used in {@link header()}. */
208 const END_HTML_TOKEN = '%%ENDHTML%%';
209 /** @var string used in {@link header()}. */
210 const MAIN_CONTENT_TOKEN = '[MAIN CONTENT GOES HERE]';
211 /** @var string used to pass information from {@link doctype()} to {@link standard_head_html()}. */
212 protected $contenttype;
213 /** @var string used by {@link redirect_message()} method to communicate with {@link header()}. */
214 protected $metarefreshtag = '';
217 * Get the DOCTYPE declaration that should be used with this page. Designed to
218 * be called in theme layout.php files.
219 * @return string the DOCTYPE declaration (and any XML prologue) that should be used.
221 public function doctype() {
224 $doctype = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">' . "\n";
225 $this->contenttype = 'text/html; charset=utf-8';
227 if (empty($CFG->xmlstrictheaders)) {
231 // We want to serve the page with an XML content type, to force well-formedness errors to be reported.
232 $prolog = '<?xml version="1.0" encoding="utf-8"?>' . "\n";
233 if (isset($_SERVER['HTTP_ACCEPT']) && strpos($_SERVER['HTTP_ACCEPT'], 'application/xhtml+xml') !== false) {
234 // Firefox and other browsers that can cope natively with XHTML.
235 $this->contenttype = 'application/xhtml+xml; charset=utf-8';
237 } else if (preg_match('/MSIE.*Windows NT/', $_SERVER['HTTP_USER_AGENT'])) {
238 // IE can't cope with application/xhtml+xml, but it will cope if we send application/xml with an XSL stylesheet.
239 $this->contenttype = 'application/xml; charset=utf-8';
240 $prolog .= '<?xml-stylesheet type="text/xsl" href="' . $CFG->httpswwwroot . '/lib/xhtml.xsl"?>' . "\n";
246 return $prolog . $doctype;
250 * The attributes that should be added to the <html> tag. Designed to
251 * be called in theme layout.php files.
252 * @return string HTML fragment.
254 public function htmlattributes() {
255 return get_html_lang(true) . ' xmlns="http://www.w3.org/1999/xhtml"';
259 * The standard tags (meta tags, links to stylesheets and JavaScript, etc.)
260 * that should be included in the <head> tag. Designed to be called in theme
262 * @return string HTML fragment.
264 public function standard_head_html() {
265 global $CFG, $SESSION;
267 $output .= '<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />' . "\n";
268 $output .= '<meta name="keywords" content="moodle, ' . $this->page->title . '" />' . "\n";
269 if (!$this->page->cacheable) {
270 $output .= '<meta http-equiv="pragma" content="no-cache" />' . "\n";
271 $output .= '<meta http-equiv="expires" content="0" />' . "\n";
273 // This is only set by the {@link redirect()} method
274 $output .= $this->metarefreshtag;
276 // Check if a periodic refresh delay has been set and make sure we arn't
277 // already meta refreshing
278 if ($this->metarefreshtag=='' && $this->page->periodicrefreshdelay!==null) {
279 $output .= '<meta http-equiv="refresh" content="'.$this->page->periodicrefreshdelay.';url='.$this->page->url->out().'" />';
282 $this->page->requires->js_function_call('setTimeout', array('fix_column_widths()', 20));
284 $focus = $this->page->focuscontrol;
285 if (!empty($focus)) {
286 if (preg_match("#forms\['([a-zA-Z0-9]+)'\].elements\['([a-zA-Z0-9]+)'\]#", $focus, $matches)) {
287 // This is a horrifically bad way to handle focus but it is passed in
288 // through messy formslib::moodleform
289 $this->page->requires->js_function_call('old_onload_focus', array($matches[1], $matches[2]));
290 } else if (strpos($focus, '.')!==false) {
291 // Old style of focus, bad way to do it
292 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);
293 $this->page->requires->js_function_call('old_onload_focus', explode('.', $focus, 2));
295 // Focus element with given id
296 $this->page->requires->js_function_call('focuscontrol', array($focus));
300 // Get the theme stylesheet - this has to be always first CSS, this loads also styles.css from all plugins;
301 // any other custom CSS can not be overridden via themes and is highly discouraged
302 $urls = $this->page->theme->css_urls($this->page);
303 foreach ($urls as $url) {
304 $this->page->requires->css_theme($url);
307 // Get the theme javascript head and footer
308 $jsurl = $this->page->theme->javascript_url(true);
309 $this->page->requires->js($jsurl, true);
310 $jsurl = $this->page->theme->javascript_url(false);
311 $this->page->requires->js($jsurl);
313 // Perform a browser environment check for the flash version. Should only run once per login session.
314 if (!NO_MOODLE_COOKIES && isloggedin() && !empty($CFG->excludeoldflashclients) && empty($SESSION->flashversion)) {
315 $this->page->requires->js('/lib/swfobject/swfobject.js');
316 $this->page->requires->js_init_call('M.core_flashdetect.init');
319 // Get any HTML from the page_requirements_manager.
320 $output .= $this->page->requires->get_head_code($this->page, $this);
322 // List alternate versions.
323 foreach ($this->page->alternateversions as $type => $alt) {
324 $output .= html_writer::empty_tag('link', array('rel' => 'alternate',
325 'type' => $type, 'title' => $alt->title, 'href' => $alt->url));
332 * The standard tags (typically skip links) that should be output just inside
333 * the start of the <body> tag. Designed to be called in theme layout.php files.
334 * @return string HTML fragment.
336 public function standard_top_of_body_html() {
337 return $this->page->requires->get_top_of_body_code();
341 * The standard tags (typically performance information and validation links,
342 * if we are in developer debug mode) that should be output in the footer area
343 * of the page. Designed to be called in theme layout.php files.
344 * @return string HTML fragment.
346 public function standard_footer_html() {
349 // This function is normally called from a layout.php file in {@link header()}
350 // but some of the content won't be known until later, so we return a placeholder
351 // for now. This will be replaced with the real content in {@link footer()}.
352 $output = self::PERFORMANCE_INFO_TOKEN;
353 if ($this->page->legacythemeinuse) {
354 // The legacy theme is in use print the notification
355 $output .= html_writer::tag('div', get_string('legacythemeinuse'), array('class'=>'legacythemeinuse'));
357 if (!empty($CFG->debugpageinfo)) {
358 $output .= '<div class="performanceinfo pageinfo">This page is: ' . $this->page->debug_summary() . '</div>';
360 if (debugging(null, DEBUG_DEVELOPER) and has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) { // Only in developer mode
361 $output .= '<div class="purgecaches"><a href="'.$CFG->wwwroot.'/admin/purgecaches.php?confirm=1&sesskey='.sesskey().'">'.get_string('purgecaches', 'admin').'</a></div>';
363 if (!empty($CFG->debugvalidators)) {
364 $output .= '<div class="validators"><ul>
365 <li><a href="http://validator.w3.org/check?verbose=1&ss=1&uri=' . urlencode(qualified_me()) . '">Validate HTML</a></li>
366 <li><a href="http://www.contentquality.com/mynewtester/cynthia.exe?rptmode=-1&url1=' . urlencode(qualified_me()) . '">Section 508 Check</a></li>
367 <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>
374 * The standard tags (typically script tags that are not needed earlier) that
375 * should be output after everything else, . Designed to be called in theme layout.php files.
376 * @return string HTML fragment.
378 public function standard_end_of_body_html() {
379 // This function is normally called from a layout.php file in {@link header()}
380 // but some of the content won't be known until later, so we return a placeholder
381 // for now. This will be replaced with the real content in {@link footer()}.
382 echo self::END_HTML_TOKEN;
386 * Return the standard string that says whether you are logged in (and switched
387 * roles/logged in as another user).
388 * @return string HTML fragment.
390 public function login_info() {
391 global $USER, $CFG, $DB, $SESSION;
393 if (during_initial_install()) {
397 $course = $this->page->course;
399 if (session_is_loggedinas()) {
400 $realuser = session_get_realuser();
401 $fullname = fullname($realuser, true);
402 $realuserinfo = " [<a href=\"$CFG->wwwroot/course/loginas.php?id=$course->id&sesskey=".sesskey()."\">$fullname</a>] ";
407 $loginurl = get_login_url();
409 if (empty($course->id)) {
410 // $course->id is not defined during installation
412 } else if (isloggedin()) {
413 $context = get_context_instance(CONTEXT_COURSE, $course->id);
415 $fullname = fullname($USER, true);
416 // Since Moodle 2.0 this link always goes to the public profile page (not the course profile page)
417 $username = "<a href=\"$CFG->wwwroot/user/profile.php?id=$USER->id\">$fullname</a>";
418 if (is_mnet_remote_user($USER) and $idprovider = $DB->get_record('mnet_host', array('id'=>$USER->mnethostid))) {
419 $username .= " from <a href=\"{$idprovider->wwwroot}\">{$idprovider->name}</a>";
422 $loggedinas = $realuserinfo.get_string('loggedinasguest').
423 " (<a href=\"$loginurl\">".get_string('login').'</a>)';
424 } else if (is_role_switched($course->id)) { // Has switched roles
426 if ($role = $DB->get_record('role', array('id'=>$USER->access['rsw'][$context->path]))) {
427 $rolename = ': '.format_string($role->name);
429 $loggedinas = get_string('loggedinas', 'moodle', $username).$rolename.
430 " (<a href=\"$CFG->wwwroot/course/view.php?id=$course->id&switchrole=0&sesskey=".sesskey()."\">".get_string('switchrolereturn').'</a>)';
432 $loggedinas = $realuserinfo.get_string('loggedinas', 'moodle', $username).' '.
433 " (<a href=\"$CFG->wwwroot/login/logout.php?sesskey=".sesskey()."\">".get_string('logout').'</a>)';
436 $loggedinas = get_string('loggedinnot', 'moodle').
437 " (<a href=\"$loginurl\">".get_string('login').'</a>)';
440 $loggedinas = '<div class="logininfo">'.$loggedinas.'</div>';
442 if (isset($SESSION->justloggedin)) {
443 unset($SESSION->justloggedin);
444 if (!empty($CFG->displayloginfailures)) {
445 if (!isguestuser()) {
446 if ($count = count_login_failures($CFG->displayloginfailures, $USER->username, $USER->lastlogin)) {
447 $loggedinas .= ' <div class="loginfailures">';
448 if (empty($count->accounts)) {
449 $loggedinas .= get_string('failedloginattempts', '', $count);
451 $loggedinas .= get_string('failedloginattemptsall', '', $count);
453 if (has_capability('coursereport/log:view', get_context_instance(CONTEXT_SYSTEM))) {
454 $loggedinas .= ' (<a href="'.$CFG->wwwroot.'/course/report/log/index.php'.
455 '?chooselog=1&id=1&modid=site_errors">'.get_string('logs').'</a>)';
457 $loggedinas .= '</div>';
467 * Return the 'back' link that normally appears in the footer.
468 * @return string HTML fragment.
470 public function home_link() {
473 if ($this->page->pagetype == 'site-index') {
474 // Special case for site home page - please do not remove
475 return '<div class="sitelink">' .
476 '<a title="Moodle" href="http://moodle.org/">' .
477 '<img style="width:100px;height:30px" src="' . $this->pix_url('moodlelogo') . '" alt="moodlelogo" /></a></div>';
479 } else if (!empty($CFG->target_release) && $CFG->target_release != $CFG->release) {
480 // Special case for during install/upgrade.
481 return '<div class="sitelink">'.
482 '<a title="Moodle" href="http://docs.moodle.org/en/Administrator_documentation" onclick="this.target=\'_blank\'">' .
483 '<img style="width:100px;height:30px" src="' . $this->pix_url('moodlelogo') . '" alt="moodlelogo" /></a></div>';
485 } else if ($this->page->course->id == $SITE->id || strpos($this->page->pagetype, 'course-view') === 0) {
486 return '<div class="homelink"><a href="' . $CFG->wwwroot . '/">' .
487 get_string('home') . '</a></div>';
490 return '<div class="homelink"><a href="' . $CFG->wwwroot . '/course/view.php?id=' . $this->page->course->id . '">' .
491 format_string($this->page->course->shortname) . '</a></div>';
496 * Redirects the user by any means possible given the current state
498 * This function should not be called directly, it should always be called using
499 * the redirect function in lib/weblib.php
501 * The redirect function should really only be called before page output has started
502 * however it will allow itself to be called during the state STATE_IN_BODY
504 * @param string $encodedurl The URL to send to encoded if required
505 * @param string $message The message to display to the user if any
506 * @param int $delay The delay before redirecting a user, if $message has been
507 * set this is a requirement and defaults to 3, set to 0 no delay
508 * @param boolean $debugdisableredirect this redirect has been disabled for
509 * debugging purposes. Display a message that explains, and don't
510 * trigger the redirect.
511 * @return string The HTML to display to the user before dying, may contain
512 * meta refresh, javascript refresh, and may have set header redirects
514 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
516 $url = str_replace('&', '&', $encodedurl);
518 switch ($this->page->state) {
519 case moodle_page::STATE_BEFORE_HEADER :
520 // No output yet it is safe to delivery the full arsenal of redirect methods
521 if (!$debugdisableredirect) {
522 // Don't use exactly the same time here, it can cause problems when both redirects fire at the same time.
523 $this->metarefreshtag = '<meta http-equiv="refresh" content="'. $delay .'; url='. $encodedurl .'" />'."\n";
524 $this->page->requires->js_function_call('document.location.replace', array($url), false, ($delay + 3));
526 $output = $this->header();
528 case moodle_page::STATE_PRINTING_HEADER :
529 // We should hopefully never get here
530 throw new coding_exception('You cannot redirect while printing the page header');
532 case moodle_page::STATE_IN_BODY :
533 // We really shouldn't be here but we can deal with this
534 debugging("You should really redirect before you start page output");
535 if (!$debugdisableredirect) {
536 $this->page->requires->js_function_call('document.location.replace', array($url), false, $delay);
538 $output = $this->opencontainers->pop_all_but_last();
540 case moodle_page::STATE_DONE :
541 // Too late to be calling redirect now
542 throw new coding_exception('You cannot redirect after the entire page has been generated');
545 $output .= $this->notification($message, 'redirectmessage');
546 $output .= '<div class="continuebutton">(<a href="'. $encodedurl .'">'. get_string('continue') .'</a>)</div>';
547 if ($debugdisableredirect) {
548 $output .= '<p><strong>Error output, so disabling automatic redirect.</strong></p>';
550 $output .= $this->footer();
555 * Start output by sending the HTTP headers, and printing the HTML <head>
556 * and the start of the <body>.
558 * To control what is printed, you should set properties on $PAGE. If you
559 * are familiar with the old {@link print_header()} function from Moodle 1.9
560 * you will find that there are properties on $PAGE that correspond to most
561 * of the old parameters to could be passed to print_header.
563 * Not that, in due course, the remaining $navigation, $menu parameters here
564 * will be replaced by more properties of $PAGE, but that is still to do.
566 * @return string HTML that you must output this, preferably immediately.
568 public function header() {
571 if (session_is_loggedinas()) {
572 $this->page->add_body_class('userloggedinas');
575 $this->page->set_state(moodle_page::STATE_PRINTING_HEADER);
577 // Find the appropriate page layout file, based on $this->page->pagelayout.
578 $layoutfile = $this->page->theme->layout_file($this->page->pagelayout);
579 // Render the layout using the layout file.
580 $rendered = $this->render_page_layout($layoutfile);
582 // Slice the rendered output into header and footer.
583 $cutpos = strpos($rendered, self::MAIN_CONTENT_TOKEN);
584 if ($cutpos === false) {
585 throw new coding_exception('page layout file ' . $layoutfile .
586 ' does not contain the string "' . self::MAIN_CONTENT_TOKEN . '".');
588 $header = substr($rendered, 0, $cutpos);
589 $footer = substr($rendered, $cutpos + strlen(self::MAIN_CONTENT_TOKEN));
591 if (empty($this->contenttype)) {
592 debugging('The page layout file did not call $OUTPUT->doctype()');
593 $header = $this->doctype() . $header;
596 send_headers($this->contenttype, $this->page->cacheable);
598 $this->opencontainers->push('header/footer', $footer);
599 $this->page->set_state(moodle_page::STATE_IN_BODY);
601 return $header . $this->skip_link_target('maincontent');
605 * Renders and outputs the page layout file.
606 * @param string $layoutfile The name of the layout file
607 * @return string HTML code
609 protected function render_page_layout($layoutfile) {
610 global $CFG, $SITE, $USER;
611 // The next lines are a bit tricky. The point is, here we are in a method
612 // of a renderer class, and this object may, or may not, be the same as
613 // the global $OUTPUT object. When rendering the page layout file, we want to use
614 // this object. However, people writing Moodle code expect the current
615 // renderer to be called $OUTPUT, not $this, so define a variable called
616 // $OUTPUT pointing at $this. The same comment applies to $PAGE and $COURSE.
619 $COURSE = $this->page->course;
622 include($layoutfile);
623 $rendered = ob_get_contents();
629 * Outputs the page's footer
630 * @return string HTML fragment
632 public function footer() {
635 $output = $this->container_end_all(true);
637 $footer = $this->opencontainers->pop('header/footer');
639 if (debugging() and $DB and $DB->is_transaction_started()) {
640 // TODO: MDL-20625 print warning - transaction will be rolled back
643 // Provide some performance info if required
644 $performanceinfo = '';
645 if (defined('MDL_PERF') || (!empty($CFG->perfdebug) and $CFG->perfdebug > 7)) {
646 $perf = get_performance_info();
647 if (defined('MDL_PERFTOLOG') && !function_exists('register_shutdown_function')) {
648 error_log("PERF: " . $perf['txt']);
650 if (defined('MDL_PERFTOFOOT') || debugging() || $CFG->perfdebug > 7) {
651 $performanceinfo = $perf['html'];
654 $footer = str_replace(self::PERFORMANCE_INFO_TOKEN, $performanceinfo, $footer);
656 $footer = str_replace(self::END_HTML_TOKEN, $this->page->requires->get_end_code(), $footer);
658 $this->page->set_state(moodle_page::STATE_DONE);
660 return $output . $footer;
664 * Close all but the last open container. This is useful in places like error
665 * handling, where you want to close all the open containers (apart from <body>)
666 * before outputting the error message.
667 * @param bool $shouldbenone assert that the stack should be empty now - causes a
668 * developer debug warning if it isn't.
669 * @return string the HTML required to close any open containers inside <body>.
671 public function container_end_all($shouldbenone = false) {
672 return $this->opencontainers->pop_all_but_last($shouldbenone);
676 * Returns lang menu or '', this method also checks forcing of languages in courses.
679 public function lang_menu() {
682 if (empty($CFG->langmenu)) {
686 if ($this->page->course != SITEID and !empty($this->page->course->lang)) {
687 // do not show lang menu if language forced
691 $currlang = current_language();
692 $langs = get_string_manager()->get_list_of_translations();
694 if (count($langs) < 2) {
698 $s = new single_select($this->page->url, 'lang', $langs, $currlang, null);
699 $s->label = get_accesshide(get_string('language'));
700 $s->class = 'langmenu';
701 return $this->render($s);
705 * Output the row of editing icons for a block, as defined by the controls array.
706 * @param array $controls an array like {@link block_contents::$controls}.
707 * @return HTML fragment.
709 public function block_controls($controls) {
710 if (empty($controls)) {
713 $controlshtml = array();
714 foreach ($controls as $control) {
715 $controlshtml[] = html_writer::tag('a',
716 html_writer::empty_tag('img', array('src' => $this->pix_url($control['icon'])->out(false), 'alt' => $control['caption'])),
717 array('class' => 'icon','title' => $control['caption'], 'href' => $control['url']));
719 return html_writer::tag('div', implode('', $controlshtml), array('class' => 'commands'));
723 * Prints a nice side block with an optional header.
725 * The content is described
726 * by a {@link block_contents} object.
728 * <div id="inst{$instanceid}" class="block_{$blockname} block">
729 * <div class="header"></div>
730 * <div class="content">
732 * <div class="footer">
735 * <div class="annotation">
739 * @param block_contents $bc HTML for the content
740 * @param string $region the region the block is appearing in.
741 * @return string the HTML to be output.
743 function block(block_contents $bc, $region) {
744 $bc = clone($bc); // Avoid messing up the object passed in.
745 if (empty($bc->blockinstanceid) || !strip_tags($bc->title)) {
746 $bc->collapsible = block_contents::NOT_HIDEABLE;
748 if ($bc->collapsible == block_contents::HIDDEN) {
749 $bc->add_class('hidden');
751 if (!empty($bc->controls)) {
752 $bc->add_class('block_with_controls');
755 $skiptitle = strip_tags($bc->title);
756 if (empty($skiptitle)) {
760 $output = html_writer::tag('a', get_string('skipa', 'access', $skiptitle), array('href' => '#sb-' . $bc->skipid, 'class' => 'skip-block'));
761 $skipdest = html_writer::tag('span', '', array('id' => 'sb-' . $bc->skipid, 'class' => 'skip-block-to'));
764 $output .= html_writer::start_tag('div', $bc->attributes);
766 $output .= $this->block_header($bc);
767 $output .= $this->block_content($bc);
769 $output .= html_writer::end_tag('div');
771 $output .= $this->block_annotation($bc);
773 $output .= $skipdest;
775 $this->init_block_hider_js($bc);
780 * Produces a header for a block
782 * @param block_contents $bc
785 protected function block_header(block_contents $bc) {
789 $title = html_writer::tag('h2', $bc->title, null);
792 $controlshtml = $this->block_controls($bc->controls);
795 if ($title || $controlshtml) {
796 $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'));
802 * Produces the content area for a block
804 * @param block_contents $bc
807 protected function block_content(block_contents $bc) {
808 $output = html_writer::start_tag('div', array('class' => 'content'));
809 if (!$bc->title && !$this->block_controls($bc->controls)) {
810 $output .= html_writer::tag('div', '', array('class'=>'block_action notitle'));
812 $output .= $bc->content;
813 $output .= $this->block_footer($bc);
814 $output .= html_writer::end_tag('div');
820 * Produces the footer for a block
822 * @param block_contents $bc
825 protected function block_footer(block_contents $bc) {
828 $output .= html_writer::tag('div', $bc->footer, array('class' => 'footer'));
834 * Produces the annotation for a block
836 * @param block_contents $bc
839 protected function block_annotation(block_contents $bc) {
841 if ($bc->annotation) {
842 $output .= html_writer::tag('div', $bc->annotation, array('class' => 'blockannotation'));
848 * Calls the JS require function to hide a block.
849 * @param block_contents $bc A block_contents object
852 protected function init_block_hider_js(block_contents $bc) {
853 if (!empty($bc->attributes['id']) and $bc->collapsible != block_contents::NOT_HIDEABLE) {
854 $config = new stdClass;
855 $config->id = $bc->attributes['id'];
856 $config->title = strip_tags($bc->title);
857 $config->preference = 'block' . $bc->blockinstanceid . 'hidden';
858 $config->tooltipVisible = get_string('hideblocka', 'access', $config->title);
859 $config->tooltipHidden = get_string('showblocka', 'access', $config->title);
861 $this->page->requires->js_init_call('M.util.init_block_hider', array($config));
862 user_preference_allow_ajax_update($config->preference, PARAM_BOOL);
867 * Render the contents of a block_list.
868 * @param array $icons the icon for each item.
869 * @param array $items the content of each item.
870 * @return string HTML
872 public function list_block_contents($icons, $items) {
875 foreach ($items as $key => $string) {
876 $item = html_writer::start_tag('li', array('class' => 'r' . $row));
877 if (!empty($icons[$key])) { //test if the content has an assigned icon
878 $item .= html_writer::tag('div', $icons[$key], array('class' => 'icon column c0'));
880 $item .= html_writer::tag('div', $string, array('class' => 'column c1'));
881 $item .= html_writer::end_tag('li');
883 $row = 1 - $row; // Flip even/odd.
885 return html_writer::tag('ul', implode("\n", $lis), array('class' => 'list'));
889 * Output all the blocks in a particular region.
890 * @param string $region the name of a region on this page.
891 * @return string the HTML to be output.
893 public function blocks_for_region($region) {
894 $blockcontents = $this->page->blocks->get_content_for_region($region, $this);
897 foreach ($blockcontents as $bc) {
898 if ($bc instanceof block_contents) {
899 $output .= $this->block($bc, $region);
900 } else if ($bc instanceof block_move_target) {
901 $output .= $this->block_move_target($bc);
903 throw new coding_exception('Unexpected type of thing (' . get_class($bc) . ') found in list of block contents.');
910 * Output a place where the block that is currently being moved can be dropped.
911 * @param block_move_target $target with the necessary details.
912 * @return string the HTML to be output.
914 public function block_move_target($target) {
915 return html_writer::tag('a', html_writer::tag('span', $target->text, array('class' => 'accesshide')), array('href' => $target->url, 'class' => 'blockmovetarget'));
919 * Renders a special html link with attached action
921 * @param string|moodle_url $url
922 * @param string $text HTML fragment
923 * @param component_action $action
924 * @param array $attributes associative array of html link attributes + disabled
925 * @return HTML fragment
927 public function action_link($url, $text, component_action $action = null, array $attributes=null) {
928 if (!($url instanceof moodle_url)) {
929 $url = new moodle_url($url);
931 $link = new action_link($url, $text, $action, $attributes);
933 return $this->render($link);
937 * Implementation of action_link rendering
938 * @param action_link $link
939 * @return string HTML fragment
941 protected function render_action_link(action_link $link) {
944 // A disabled link is rendered as formatted text
945 if (!empty($link->attributes['disabled'])) {
946 // do not use div here due to nesting restriction in xhtml strict
947 return html_writer::tag('span', $link->text, array('class'=>'currentlink'));
950 $attributes = $link->attributes;
951 unset($link->attributes['disabled']);
952 $attributes['href'] = $link->url;
954 if ($link->actions) {
955 if (empty($attributes['id'])) {
956 $id = html_writer::random_id('action_link');
957 $attributes['id'] = $id;
959 $id = $attributes['id'];
961 foreach ($link->actions as $action) {
962 $this->add_action_handler($action, $id);
966 return html_writer::tag('a', $link->text, $attributes);
971 * Similar to action_link, image is used instead of the text
973 * @param string|moodle_url $url A string URL or moodel_url
974 * @param pix_icon $pixicon
975 * @param component_action $action
976 * @param array $attributes associative array of html link attributes + disabled
977 * @param bool $linktext show title next to image in link
978 * @return string HTML fragment
980 public function action_icon($url, pix_icon $pixicon, component_action $action = null, array $attributes = null, $linktext=false) {
981 if (!($url instanceof moodle_url)) {
982 $url = new moodle_url($url);
984 $attributes = (array)$attributes;
986 if (empty($attributes['class'])) {
987 // let ppl override the class via $options
988 $attributes['class'] = 'action-icon';
991 $icon = $this->render($pixicon);
994 $text = $pixicon->attributes['alt'];
999 return $this->action_link($url, $text.$icon, $action, $attributes);
1003 * Print a message along with button choices for Continue/Cancel
1005 * If a string or moodle_url is given instead of a single_button, method defaults to post.
1007 * @param string $message The question to ask the user
1008 * @param single_button|moodle_url|string $continue The single_button component representing the Continue answer. Can also be a moodle_url or string URL
1009 * @param single_button|moodle_url|string $cancel The single_button component representing the Cancel answer. Can also be a moodle_url or string URL
1010 * @return string HTML fragment
1012 public function confirm($message, $continue, $cancel) {
1013 if ($continue instanceof single_button) {
1015 } else if (is_string($continue)) {
1016 $continue = new single_button(new moodle_url($continue), get_string('continue'), 'post');
1017 } else if ($continue instanceof moodle_url) {
1018 $continue = new single_button($continue, get_string('continue'), 'post');
1020 throw new coding_exception('The continue param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
1023 if ($cancel instanceof single_button) {
1025 } else if (is_string($cancel)) {
1026 $cancel = new single_button(new moodle_url($cancel), get_string('cancel'), 'get');
1027 } else if ($cancel instanceof moodle_url) {
1028 $cancel = new single_button($cancel, get_string('cancel'), 'get');
1030 throw new coding_exception('The cancel param to $OUTPUT->confirm() must be either a URL (string/moodle_url) or a single_button instance.');
1033 $output = $this->box_start('generalbox', 'notice');
1034 $output .= html_writer::tag('p', $message);
1035 $output .= html_writer::tag('div', $this->render($continue) . $this->render($cancel), array('class' => 'buttons'));
1036 $output .= $this->box_end();
1041 * Returns a form with a single button.
1043 * @param string|moodle_url $url
1044 * @param string $label button text
1045 * @param string $method get or post submit method
1046 * @param array $options associative array {disabled, title, etc.}
1047 * @return string HTML fragment
1049 public function single_button($url, $label, $method='post', array $options=null) {
1050 if (!($url instanceof moodle_url)) {
1051 $url = new moodle_url($url);
1053 $button = new single_button($url, $label, $method);
1055 foreach ((array)$options as $key=>$value) {
1056 if (array_key_exists($key, $button)) {
1057 $button->$key = $value;
1061 return $this->render($button);
1065 * Internal implementation of single_button rendering
1066 * @param single_button $button
1067 * @return string HTML fragment
1069 protected function render_single_button(single_button $button) {
1070 $attributes = array('type' => 'submit',
1071 'value' => $button->label,
1072 'disabled' => $button->disabled ? 'disabled' : null,
1073 'title' => $button->tooltip);
1075 if ($button->actions) {
1076 $id = html_writer::random_id('single_button');
1077 $attributes['id'] = $id;
1078 foreach ($button->actions as $action) {
1079 $this->add_action_handler($action, $id);
1083 // first the input element
1084 $output = html_writer::empty_tag('input', $attributes);
1086 // then hidden fields
1087 $params = $button->url->params();
1088 if ($button->method === 'post') {
1089 $params['sesskey'] = sesskey();
1091 foreach ($params as $var => $val) {
1092 $output .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => $var, 'value' => $val));
1095 // then div wrapper for xhtml strictness
1096 $output = html_writer::tag('div', $output);
1098 // now the form itself around it
1099 $url = $button->url->out_omit_querystring(); // url without params
1101 $url = '#'; // there has to be always some action
1103 $attributes = array('method' => $button->method,
1105 'id' => $button->formid);
1106 $output = html_writer::tag('form', $output, $attributes);
1108 // and finally one more wrapper with class
1109 return html_writer::tag('div', $output, array('class' => $button->class));
1113 * Returns a form with a single select widget.
1114 * @param moodle_url $url form action target, includes hidden fields
1115 * @param string $name name of selection field - the changing parameter in url
1116 * @param array $options list of options
1117 * @param string $selected selected element
1118 * @param array $nothing
1119 * @param string $formid
1120 * @return string HTML fragment
1122 public function single_select($url, $name, array $options, $selected='', $nothing=array(''=>'choosedots'), $formid=null) {
1123 if (!($url instanceof moodle_url)) {
1124 $url = new moodle_url($url);
1126 $select = new single_select($url, $name, $options, $selected, $nothing, $formid);
1128 return $this->render($select);
1132 * Internal implementation of single_select rendering
1133 * @param single_select $select
1134 * @return string HTML fragment
1136 protected function render_single_select(single_select $select) {
1137 $select = clone($select);
1138 if (empty($select->formid)) {
1139 $select->formid = html_writer::random_id('single_select_f');
1143 $params = $select->url->params();
1144 if ($select->method === 'post') {
1145 $params['sesskey'] = sesskey();
1147 foreach ($params as $name=>$value) {
1148 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>$name, 'value'=>$value));
1151 if (empty($select->attributes['id'])) {
1152 $select->attributes['id'] = html_writer::random_id('single_select');
1155 if ($select->disabled) {
1156 $select->attributes['disabled'] = 'disabled';
1159 if ($select->tooltip) {
1160 $select->attributes['title'] = $select->tooltip;
1163 if ($select->label) {
1164 $output .= html_writer::label($select->label, $select->attributes['id']);
1167 if ($select->helpicon instanceof help_icon) {
1168 $output .= $this->render($select->helpicon);
1169 } else if ($select->helpicon instanceof old_help_icon) {
1170 $output .= $this->render($select->helpicon);
1173 $output .= html_writer::select($select->options, $select->name, $select->selected, $select->nothing, $select->attributes);
1175 $go = html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
1176 $output .= html_writer::tag('noscript', html_writer::tag('div', $go), array('style'=>'inline'));
1178 $nothing = empty($select->nothing) ? false : key($select->nothing);
1179 $this->page->requires->js_init_call('M.util.init_select_autosubmit', array($select->formid, $select->attributes['id'], $nothing));
1181 // then div wrapper for xhtml strictness
1182 $output = html_writer::tag('div', $output);
1184 // now the form itself around it
1185 $formattributes = array('method' => $select->method,
1186 'action' => $select->url->out_omit_querystring(),
1187 'id' => $select->formid);
1188 $output = html_writer::tag('form', $output, $formattributes);
1190 // and finally one more wrapper with class
1191 return html_writer::tag('div', $output, array('class' => $select->class));
1195 * Returns a form with a url select widget.
1196 * @param array $urls list of urls - array('/course/view.php?id=1'=>'Frontpage', ....)
1197 * @param string $selected selected element
1198 * @param array $nothing
1199 * @param string $formid
1200 * @return string HTML fragment
1202 public function url_select(array $urls, $selected, $nothing=array(''=>'choosedots'), $formid=null) {
1203 $select = new url_select($urls, $selected, $nothing, $formid);
1204 return $this->render($select);
1208 * Internal implementation of url_select rendering
1209 * @param single_select $select
1210 * @return string HTML fragment
1212 protected function render_url_select(url_select $select) {
1215 $select = clone($select);
1216 if (empty($select->formid)) {
1217 $select->formid = html_writer::random_id('url_select_f');
1220 if (empty($select->attributes['id'])) {
1221 $select->attributes['id'] = html_writer::random_id('url_select');
1224 if ($select->disabled) {
1225 $select->attributes['disabled'] = 'disabled';
1228 if ($select->tooltip) {
1229 $select->attributes['title'] = $select->tooltip;
1234 if ($select->label) {
1235 $output .= html_writer::label($select->label, $select->attributes['id']);
1238 if ($select->helpicon instanceof help_icon) {
1239 $output .= $this->render($select->helpicon);
1240 } else if ($select->helpicon instanceof old_help_icon) {
1241 $output .= $this->render($select->helpicon);
1244 // For security reasons, the script course/jumpto.php requires URL starting with '/'. To keep
1245 // backward compatibility, we are removing heading $CFG->wwwroot from URLs here.
1247 foreach ($select->urls as $k=>$v) {
1249 // optgroup structure
1250 foreach ($v as $optgrouptitle => $optgroupoptions) {
1251 foreach ($optgroupoptions as $optionurl => $optiontitle) {
1252 if (empty($optionurl)) {
1253 $safeoptionurl = '';
1254 } else if (strpos($optionurl, $CFG->wwwroot.'/') === 0) {
1255 // debugging('URLs passed to url_select should be in local relative form - please fix the code.', DEBUG_DEVELOPER);
1256 $safeoptionurl = str_replace($CFG->wwwroot, '', $optionurl);
1257 } else if (strpos($optionurl, '/') !== 0) {
1258 debugging("Invalid url_select urls parameter inside optgroup: url '$optionurl' is not local relative url!");
1261 $safeoptionurl = $optionurl;
1263 $urls[$k][$optgrouptitle][$safeoptionurl] = $optiontitle;
1267 // plain list structure
1269 // nothing selected option
1270 } else if (strpos($k, $CFG->wwwroot.'/') === 0) {
1271 $k = str_replace($CFG->wwwroot, '', $k);
1272 } else if (strpos($k, '/') !== 0) {
1273 debugging("Invalid url_select urls parameter: url '$k' is not local relative url!");
1279 $selected = $select->selected;
1280 if (!empty($selected)) {
1281 if (strpos($select->selected, $CFG->wwwroot.'/') === 0) {
1282 $selected = str_replace($CFG->wwwroot, '', $selected);
1283 } else if (strpos($selected, '/') !== 0) {
1284 debugging("Invalid value of parameter 'selected': url '$selected' is not local relative url!");
1288 $output .= html_writer::empty_tag('input', array('type'=>'hidden', 'name'=>'sesskey', 'value'=>sesskey()));
1289 $output .= html_writer::select($urls, 'jump', $selected, $select->nothing, $select->attributes);
1291 $go = html_writer::empty_tag('input', array('type'=>'submit', 'value'=>get_string('go')));
1292 $output .= html_writer::tag('noscript', html_writer::tag('div', $go), array('style'=>'inline'));
1294 $nothing = empty($select->nothing) ? false : key($select->nothing);
1295 $output .= $this->page->requires->js_init_call('M.util.init_url_select', array($select->formid, $select->attributes['id'], $nothing));
1297 // then div wrapper for xhtml strictness
1298 $output = html_writer::tag('div', $output);
1300 // now the form itself around it
1301 $formattributes = array('method' => 'post',
1302 'action' => new moodle_url('/course/jumpto.php'),
1303 'id' => $select->formid);
1304 $output = html_writer::tag('form', $output, $formattributes);
1306 // and finally one more wrapper with class
1307 return html_writer::tag('div', $output, array('class' => $select->class));
1311 * Returns a string containing a link to the user documentation.
1312 * Also contains an icon by default. Shown to teachers and admin only.
1313 * @param string $path The page link after doc root and language, no leading slash.
1314 * @param string $text The text to be displayed for the link
1317 public function doc_link($path, $text = '') {
1320 $icon = $this->pix_icon('docs', $text, 'moodle', array('class'=>'iconhelp'));
1322 $url = new moodle_url(get_docs_url($path));
1324 $attributes = array('href'=>$url);
1325 if (!empty($CFG->doctonewwindow)) {
1326 $attributes['id'] = $this->add_action_handler(new popup_action('click', $url));
1329 return html_writer::tag('a', $icon.$text, $attributes);
1334 * @param string $pix short pix name
1335 * @param string $alt mandatory alt attribute
1336 * @param string $component standard compoennt name like 'moodle', 'mod_forum', etc.
1337 * @param array $attributes htm lattributes
1338 * @return string HTML fragment
1340 public function pix_icon($pix, $alt, $component='moodle', array $attributes = null) {
1341 $icon = new pix_icon($pix, $alt, $component, $attributes);
1342 return $this->render($icon);
1347 * @param pix_icon $icon
1348 * @return string HTML fragment
1350 protected function render_pix_icon(pix_icon $icon) {
1351 $attributes = $icon->attributes;
1352 $attributes['src'] = $this->pix_url($icon->pix, $icon->component);
1353 return html_writer::empty_tag('img', $attributes);
1357 * Produces the html that represents this rating in the UI
1358 * @param $page the page object on which this rating will appear
1360 function render_rating(rating $rating) {
1362 static $havesetupjavascript = false;
1364 if( $rating->settings->aggregationmethod == RATING_AGGREGATE_NONE ){
1365 return null;//ratings are turned off
1368 $useajax = !empty($CFG->enableajax);
1370 //include required Javascript
1371 if( !$havesetupjavascript && $useajax ) {
1372 $this->page->requires->js_init_call('M.core_rating.init');
1373 $havesetupjavascript = true;
1376 //check the item we're rating was created in the assessable time window
1377 $inassessablewindow = true;
1378 if ( $rating->settings->assesstimestart && $rating->settings->assesstimefinish ) {
1379 if ($rating->itemtimecreated < $rating->settings->assesstimestart || $rating->itemtimecreated > $rating->settings->assesstimefinish) {
1380 $inassessablewindow = false;
1384 $strrate = get_string("rate", "rating");
1385 $ratinghtml = ''; //the string we'll return
1387 //permissions check - can they view the aggregate?
1388 $canviewaggregate = false;
1390 //if its the current user's item and they have permission to view the aggregate on their own items
1391 if ( $rating->itemuserid==$USER->id && $rating->settings->permissions->view && $rating->settings->pluginpermissions->view) {
1392 $canviewaggregate = true;
1395 //if the item doesnt belong to anyone or its another user's items and they can see the aggregate on items they don't own
1396 //Note that viewany doesnt mean you can see the aggregate or ratings of your own items
1397 if ( (empty($rating->itemuserid) or $rating->itemuserid!=$USER->id) && $rating->settings->permissions->viewany && $rating->settings->pluginpermissions->viewany ) {
1398 $canviewaggregate = true;
1401 if ($canviewaggregate==true) {
1402 $aggregatelabel = '';
1403 switch ($rating->settings->aggregationmethod) {
1404 case RATING_AGGREGATE_AVERAGE :
1405 $aggregatelabel .= get_string("aggregateavg", "rating");
1407 case RATING_AGGREGATE_COUNT :
1408 $aggregatelabel .= get_string("aggregatecount", "rating");
1410 case RATING_AGGREGATE_MAXIMUM :
1411 $aggregatelabel .= get_string("aggregatemax", "rating");
1413 case RATING_AGGREGATE_MINIMUM :
1414 $aggregatelabel .= get_string("aggregatemin", "rating");
1416 case RATING_AGGREGATE_SUM :
1417 $aggregatelabel .= get_string("aggregatesum", "rating");
1420 $aggregatelabel .= get_string('labelsep', 'langconfig');
1422 //$scalemax = 0;//no longer displaying scale max
1425 //only display aggregate if aggregation method isn't COUNT
1426 if ($rating->aggregate && $rating->settings->aggregationmethod!= RATING_AGGREGATE_COUNT) {
1427 if ($rating->settings->aggregationmethod!= RATING_AGGREGATE_SUM && is_array($rating->settings->scale->scaleitems)) {
1428 $aggregatestr .= $rating->settings->scale->scaleitems[round($rating->aggregate)];//round aggregate as we're using it as an index
1430 else { //aggregation is SUM or the scale is numeric
1431 $aggregatestr .= round($rating->aggregate,1);
1437 $countstr = html_writer::start_tag('span', array('id'=>"ratingcount{$rating->itemid}"));
1438 if ($rating->count>0) {
1439 $countstr .= "({$rating->count})";
1441 $countstr .= html_writer::end_tag('span');
1443 //$aggregatehtml = "{$ratingstr} / $scalemax ({$rating->count}) ";
1444 $aggregatehtml = "<span id='ratingaggregate{$rating->itemid}'>{$aggregatestr}</span> $countstr ";
1446 $ratinghtml .= html_writer::tag('span', $aggregatelabel, array('class'=>'rating-aggregate-label'));
1447 if ($rating->settings->permissions->viewall && $rating->settings->pluginpermissions->viewall) {
1448 $url = "/rating/index.php?contextid={$rating->context->id}&itemid={$rating->itemid}&scaleid={$rating->settings->scale->id}";
1449 $nonpopuplink = new moodle_url($url);
1450 $popuplink = new moodle_url("$url&popup=1");
1452 $action = new popup_action('click', $popuplink, 'ratings', array('height' => 400, 'width' => 600));
1453 $ratinghtml .= $this->action_link($nonpopuplink, $aggregatehtml, $action);
1455 $ratinghtml .= $aggregatehtml;
1460 //if the item doesn't belong to the current user, the user has permission to rate
1461 //and we're within the assessable period
1462 if ($rating->itemuserid!=$USER->id
1463 && $rating->settings->permissions->rate
1464 && $rating->settings->pluginpermissions->rate
1465 && $inassessablewindow) {
1467 //start the rating form
1468 $formstart = html_writer::start_tag('form',
1469 array('id'=>"postrating{$rating->itemid}", 'class'=>'postratingform', 'method'=>'post', 'action'=>"{$CFG->wwwroot}/rating/rate.php"));
1471 $formstart .= html_writer::start_tag('div', array('class'=>'ratingform'));
1473 //add the hidden inputs
1475 $attributes = array('type'=>'hidden', 'class'=>'ratinginput', 'name'=>'contextid', 'value'=>$rating->context->id);
1476 $formstart .= html_writer::empty_tag('input', $attributes);
1478 $attributes['name'] = 'itemid';
1479 $attributes['value'] = $rating->itemid;
1480 $formstart .= html_writer::empty_tag('input', $attributes);
1482 $attributes['name'] = 'scaleid';
1483 $attributes['value'] = $rating->settings->scale->id;
1484 $formstart .= html_writer::empty_tag('input', $attributes);
1486 $attributes['name'] = 'returnurl';
1487 $attributes['value'] = $rating->settings->returnurl;
1488 $formstart .= html_writer::empty_tag('input', $attributes);
1490 $attributes['name'] = 'rateduserid';
1491 $attributes['value'] = $rating->itemuserid;
1492 $formstart .= html_writer::empty_tag('input', $attributes);
1494 $attributes['name'] = 'aggregation';
1495 $attributes['value'] = $rating->settings->aggregationmethod;
1496 $formstart .= html_writer::empty_tag('input', $attributes);
1498 $attributes['name'] = 'sesskey';
1499 $attributes['value'] = sesskey();;
1500 $formstart .= html_writer::empty_tag('input', $attributes);
1502 if (empty($ratinghtml)) {
1503 $ratinghtml .= $strrate.': ';
1506 $ratinghtml = $formstart.$ratinghtml;
1508 //generate an array of values for numeric scales
1509 $scalearray = $rating->settings->scale->scaleitems;
1510 if (!is_array($scalearray)) { //almost certainly a numerical scale
1511 $intscalearray = intval($scalearray);//just in case they've passed "5" instead of 5
1512 $scalearray = array();
1513 if( is_int($intscalearray) && $intscalearray>0 ) {
1514 for($i=0; $i<=$rating->settings->scale->scaleitems; $i++) {
1515 $scalearray[$i] = $i;
1520 $scalearray = array(RATING_UNSET_RATING => $strrate.'...') + $scalearray;
1521 $ratinghtml .= html_writer::select($scalearray, 'rating', $rating->rating, false, array('class'=>'postratingmenu ratinginput','id'=>'menurating'.$rating->itemid));
1523 //output submit button
1525 $ratinghtml .= html_writer::start_tag('span', array('class'=>"ratingsubmit"));
1527 $attributes = array('type'=>'submit', 'class'=>'postratingmenusubmit', 'id'=>'postratingsubmit'.$rating->itemid, 'value'=>s(get_string('rate', 'rating')));
1528 $ratinghtml .= html_writer::empty_tag('input', $attributes);
1530 if (is_array($rating->settings->scale->scaleitems)) {
1531 $ratinghtml .= $this->help_icon_scale($rating->settings->scale->courseid, $rating->settings->scale);
1533 $ratinghtml .= html_writer::end_tag('span');
1534 $ratinghtml .= html_writer::end_tag('div');
1535 $ratinghtml .= html_writer::end_tag('form');
1542 * Centered heading with attached help button (same title text)
1543 * and optional icon attached
1544 * @param string $text A heading text
1545 * @param string $helpidentifier The keyword that defines a help page
1546 * @param string $component component name
1547 * @param string|moodle_url $icon
1548 * @param string $iconalt icon alt text
1549 * @return string HTML fragment
1551 public function heading_with_help($text, $helpidentifier, $component='moodle', $icon='', $iconalt='') {
1554 $image = $this->pix_icon($icon, $iconalt, $component, array('class'=>'icon'));
1558 if ($helpidentifier) {
1559 $help = $this->help_icon($helpidentifier, $component);
1562 return $this->heading($image.$text.$help, 2, 'main help');
1566 * Print a help icon.
1568 * @deprecated since Moodle 2.0
1569 * @param string $page The keyword that defines a help page
1570 * @param string $title A descriptive text for accessibility only
1571 * @param string $component component name
1572 * @param string|bool $linktext true means use $title as link text, string means link text value
1573 * @return string HTML fragment
1575 public function old_help_icon($helpidentifier, $title, $component = 'moodle', $linktext = '') {
1576 debugging('The method old_help_icon() is deprecated, please fix the code and use help_icon() method instead', DEBUG_DEVELOPER);
1577 $icon = new old_help_icon($helpidentifier, $title, $component);
1578 if ($linktext === true) {
1579 $icon->linktext = $title;
1580 } else if (!empty($linktext)) {
1581 $icon->linktext = $linktext;
1583 return $this->render($icon);
1587 * Implementation of user image rendering.
1588 * @param help_icon $helpicon
1589 * @return string HTML fragment
1591 protected function render_old_help_icon(old_help_icon $helpicon) {
1594 // first get the help image icon
1595 $src = $this->pix_url('help');
1597 if (empty($helpicon->linktext)) {
1598 $alt = $helpicon->title;
1600 $alt = get_string('helpwiththis');
1603 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1604 $output = html_writer::empty_tag('img', $attributes);
1606 // add the link text if given
1607 if (!empty($helpicon->linktext)) {
1608 // the spacing has to be done through CSS
1609 $output .= $helpicon->linktext;
1612 // now create the link around it
1613 $url = new moodle_url('/help.php', array('component' => $helpicon->component, 'identifier' => $helpicon->helpidentifier, 'lang'=>current_language()));
1615 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1616 $title = get_string('helpprefix2', '', trim($helpicon->title, ". \t"));
1618 $attributes = array('href'=>$url, 'title'=>$title);
1619 $id = html_writer::random_id('helpicon');
1620 $attributes['id'] = $id;
1621 $output = html_writer::tag('a', $output, $attributes);
1623 $this->page->requires->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1626 return html_writer::tag('span', $output, array('class' => 'helplink'));
1630 * Print a help icon.
1632 * @param string $identifier The keyword that defines a help page
1633 * @param string $component component name
1634 * @param string|bool $linktext true means use $title as link text, string means link text value
1635 * @return string HTML fragment
1637 public function help_icon($identifier, $component = 'moodle', $linktext = '') {
1638 $icon = new help_icon($identifier, $component);
1639 $icon->diag_strings();
1640 if ($linktext === true) {
1641 $icon->linktext = get_string($icon->identifier, $icon->component);
1642 } else if (!empty($linktext)) {
1643 $icon->linktext = $linktext;
1645 return $this->render($icon);
1649 * Implementation of user image rendering.
1650 * @param help_icon $helpicon
1651 * @return string HTML fragment
1653 protected function render_help_icon(help_icon $helpicon) {
1656 // first get the help image icon
1657 $src = $this->pix_url('help');
1659 $title = get_string($helpicon->identifier, $helpicon->component);
1661 if (empty($helpicon->linktext)) {
1664 $alt = get_string('helpwiththis');
1667 $attributes = array('src'=>$src, 'alt'=>$alt, 'class'=>'iconhelp');
1668 $output = html_writer::empty_tag('img', $attributes);
1670 // add the link text if given
1671 if (!empty($helpicon->linktext)) {
1672 // the spacing has to be done through CSS
1673 $output .= $helpicon->linktext;
1676 // now create the link around it
1677 $url = new moodle_url('/help.php', array('component' => $helpicon->component, 'identifier' => $helpicon->identifier, 'lang'=>current_language()));
1679 // note: this title is displayed only if JS is disabled, otherwise the link will have the new ajax tooltip
1680 $title = get_string('helpprefix2', '', trim($title, ". \t"));
1682 $attributes = array('href'=>$url, 'title'=>$title);
1683 $id = html_writer::random_id('helpicon');
1684 $attributes['id'] = $id;
1685 $output = html_writer::tag('a', $output, $attributes);
1687 $this->page->requires->js_init_call('M.util.help_icon.add', array(array('id'=>$id, 'url'=>$url->out(false))));
1690 return html_writer::tag('span', $output, array('class' => 'helplink'));
1694 * Print scale help icon.
1696 * @param int $courseid
1697 * @param object $scale instance
1698 * @return string HTML fragment
1700 public function help_icon_scale($courseid, stdClass $scale) {
1703 $title = get_string('helpprefix2', '', $scale->name) .' ('.get_string('newwindow').')';
1705 $icon = $this->pix_icon('help', get_string('scales'), 'moodle', array('class'=>'iconhelp'));
1707 $scaleid = abs($scale->id);
1709 $link = new moodle_url('/course/scales.php', array('id' => $courseid, 'list' => true, 'scaleid' => $scaleid));
1710 $action = new popup_action('click', $link, 'ratingscale');
1712 return html_writer::tag('span', $this->action_link($link, $icon, $action), array('class' => 'helplink'));
1716 * Creates and returns a spacer image with optional line break.
1718 * @param array $attributes
1720 * @return string HTML fragment
1722 public function spacer(array $attributes = null, $br = false) {
1723 $attributes = (array)$attributes;
1724 if (empty($attributes['width'])) {
1725 $attributes['width'] = 1;
1727 if (empty($attributes['height'])) {
1728 $attributes['height'] = 1;
1730 $attributes['class'] = 'spacer';
1732 $output = $this->pix_icon('spacer', '', 'moodle', $attributes);
1735 $output .= '<br />';
1742 * Print the specified user's avatar.
1744 * User avatar may be obtained in two ways:
1746 * // Option 1: (shortcut for simple cases, preferred way)
1747 * // $user has come from the DB and has fields id, picture, imagealt, firstname and lastname
1748 * $OUTPUT->user_picture($user, array('popup'=>true));
1751 * $userpic = new user_picture($user);
1752 * // Set properties of $userpic
1753 * $userpic->popup = true;
1754 * $OUTPUT->render($userpic);
1757 * @param object Object with at least fields id, picture, imagealt, firstname, lastname
1758 * If any of these are missing, the database is queried. Avoid this
1759 * if at all possible, particularly for reports. It is very bad for performance.
1760 * @param array $options associative array with user picture options, used only if not a user_picture object,
1762 * - courseid=$this->page->course->id (course id of user profile in link)
1763 * - size=35 (size of image)
1764 * - link=true (make image clickable - the link leads to user profile)
1765 * - popup=false (open in popup)
1766 * - alttext=true (add image alt attribute)
1767 * - class = image class attribute (default 'userpicture')
1768 * @return string HTML fragment
1770 public function user_picture(stdClass $user, array $options = null) {
1771 $userpicture = new user_picture($user);
1772 foreach ((array)$options as $key=>$value) {
1773 if (array_key_exists($key, $userpicture)) {
1774 $userpicture->$key = $value;
1777 return $this->render($userpicture);
1781 * Internal implementation of user image rendering.
1782 * @param user_picture $userpicture
1785 protected function render_user_picture(user_picture $userpicture) {
1788 $user = $userpicture->user;
1790 if ($userpicture->alttext) {
1791 if (!empty($user->imagealt)) {
1792 $alt = $user->imagealt;
1794 $alt = get_string('pictureof', '', fullname($user));
1800 if (empty($userpicture->size)) {
1803 } else if ($userpicture->size === true or $userpicture->size == 1) {
1806 } else if ($userpicture->size >= 50) {
1808 $size = $userpicture->size;
1811 $size = $userpicture->size;
1814 $class = $userpicture->class;
1816 if ($user->picture == 1) {
1817 $usercontext = get_context_instance(CONTEXT_USER, $user->id);
1818 $src = moodle_url::make_pluginfile_url($usercontext->id, 'user', 'icon', NULL, '/', $file);
1820 } else if ($user->picture == 2) {
1821 //TODO: gravatar user icon support
1823 } else { // Print default user pictures (use theme version if available)
1824 $class .= ' defaultuserpic';
1825 $src = $this->pix_url('u/' . $file);
1828 $attributes = array('src'=>$src, 'alt'=>$alt, 'title'=>$alt, 'class'=>$class, 'width'=>$size, 'height'=>$size);
1830 // get the image html output fisrt
1831 $output = html_writer::empty_tag('img', $attributes);;
1833 // then wrap it in link if needed
1834 if (!$userpicture->link) {
1838 if (empty($userpicture->courseid)) {
1839 $courseid = $this->page->course->id;
1841 $courseid = $userpicture->courseid;
1844 if ($courseid == SITEID) {
1845 $url = new moodle_url('/user/profile.php', array('id' => $user->id));
1847 $url = new moodle_url('/user/view.php', array('id' => $user->id, 'course' => $courseid));
1850 $attributes = array('href'=>$url);
1852 if ($userpicture->popup) {
1853 $id = html_writer::random_id('userpicture');
1854 $attributes['id'] = $id;
1855 $this->add_action_handler(new popup_action('click', $url), $id);
1858 return html_writer::tag('a', $output, $attributes);
1862 * Internal implementation of file tree viewer items rendering.
1866 public function htmllize_file_tree($dir) {
1867 if (empty($dir['subdirs']) and empty($dir['files'])) {
1871 foreach ($dir['subdirs'] as $subdir) {
1872 $result .= '<li>'.s($subdir['dirname']).' '.$this->htmllize_file_tree($subdir).'</li>';
1874 foreach ($dir['files'] as $file) {
1875 $filename = $file->get_filename();
1876 $result .= '<li><span>'.html_writer::link($file->fileurl, $filename).'</span></li>';
1883 * Print the file picker
1886 * $OUTPUT->file_picker($options);
1889 * @param array $options associative array with file manager options
1893 * client_id=>uniqid(),
1894 * acepted_types=>'*',
1895 * return_types=>FILE_INTERNAL,
1896 * context=>$PAGE->context
1897 * @return string HTML fragment
1899 public function file_picker($options) {
1900 $fp = new file_picker($options);
1901 return $this->render($fp);
1904 * Internal implementation of file picker rendering.
1905 * @param file_picker $fp
1908 public function render_file_picker(file_picker $fp) {
1909 global $CFG, $OUTPUT, $USER;
1910 $options = $fp->options;
1911 $client_id = $options->client_id;
1912 $strsaved = get_string('filesaved', 'repository');
1913 $straddfile = get_string('openpicker', 'repository');
1914 $strloading = get_string('loading', 'repository');
1915 $icon_progress = $OUTPUT->pix_icon('i/loading_small', $strloading).'';
1917 $currentfile = $options->currentfile;
1918 if (empty($currentfile)) {
1919 $currentfile = get_string('nofilesattached', 'repository');
1921 if ($options->maxbytes) {
1922 $size = $options->maxbytes;
1924 $size = get_max_upload_file_size();
1929 $maxsize = get_string('maxfilesize', 'moodle', display_size($size));
1932 <div class="filemanager-loading mdl-align" id='filepicker-loading-{$client_id}'>
1935 <div id="filepicker-wrapper-{$client_id}" class="mdl-left" style="display:none">
1937 <input type="button" id="filepicker-button-{$client_id}" value="{$straddfile}" />
1938 <span> $maxsize </span>
1941 if ($options->env != 'url') {
1943 <div id="file_info_{$client_id}" class="mdl-left filepicker-filelist">$currentfile</div>
1951 * Prints the 'Update this Modulename' button that appears on module pages.
1953 * @param string $cmid the course_module id.
1954 * @param string $modulename the module name, eg. "forum", "quiz" or "workshop"
1955 * @return string the HTML for the button, if this user has permission to edit it, else an empty string.
1957 public function update_module_button($cmid, $modulename) {
1959 if (has_capability('moodle/course:manageactivities', get_context_instance(CONTEXT_MODULE, $cmid))) {
1960 $modulename = get_string('modulename', $modulename);
1961 $string = get_string('updatethis', '', $modulename);
1962 $url = new moodle_url("$CFG->wwwroot/course/mod.php", array('update' => $cmid, 'return' => true, 'sesskey' => sesskey()));
1963 return $this->single_button($url, $string);
1970 * Prints a "Turn editing on/off" button in a form.
1971 * @param moodle_url $url The URL + params to send through when clicking the button
1972 * @return string HTML the button
1974 public function edit_button(moodle_url $url) {
1976 $url->param('sesskey', sesskey());
1977 if ($this->page->user_is_editing()) {
1978 $url->param('edit', 'off');
1979 $editstring = get_string('turneditingoff');
1981 $url->param('edit', 'on');
1982 $editstring = get_string('turneditingon');
1985 return $this->single_button($url, $editstring);
1989 * Prints a simple button to close a window
1991 * @param string $text The lang string for the button's label (already output from get_string())
1992 * @return string html fragment
1994 public function close_window_button($text='') {
1996 $text = get_string('closewindow');
1998 $button = new single_button(new moodle_url('#'), $text, 'get');
1999 $button->add_action(new component_action('click', 'close_window'));
2001 return $this->container($this->render($button), 'closewindow');
2005 * Output an error message. By default wraps the error message in <span class="error">.
2006 * If the error message is blank, nothing is output.
2007 * @param string $message the error message.
2008 * @return string the HTML to output.
2010 public function error_text($message) {
2011 if (empty($message)) {
2014 return html_writer::tag('span', $message, array('class' => 'error'));
2018 * Do not call this function directly.
2020 * To terminate the current script with a fatal error, call the {@link print_error}
2021 * function, or throw an exception. Doing either of those things will then call this
2022 * function to display the error, before terminating the execution.
2024 * @param string $message The message to output
2025 * @param string $moreinfourl URL where more info can be found about the error
2026 * @param string $link Link for the Continue button
2027 * @param array $backtrace The execution backtrace
2028 * @param string $debuginfo Debugging information
2029 * @return string the HTML to output.
2031 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2036 if ($this->has_started()) {
2037 // we can not always recover properly here, we have problems with output buffering,
2038 // html tables, etc.
2039 $output .= $this->opencontainers->pop_all_but_last();
2042 // It is really bad if library code throws exception when output buffering is on,
2043 // because the buffered text would be printed before our start of page.
2044 // NOTE: this hack might be behave unexpectedly in case output buffering is enabled in PHP.ini
2045 while (ob_get_level() > 0) {
2046 $obbuffer .= ob_get_clean();
2049 // Header not yet printed
2050 if (isset($_SERVER['SERVER_PROTOCOL'])) {
2051 // server protocol should be always present, because this render
2052 // can not be used from command line or when outputting custom XML
2053 @header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
2055 $this->page->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
2056 $this->page->set_url('/'); // no url
2057 //$this->page->set_pagelayout('base'); //TODO: MDL-20676 blocks on error pages are weird, unfortunately it somehow detect the pagelayout from URL :-(
2058 $this->page->set_title(get_string('error'));
2059 $this->page->set_heading($this->page->course->fullname);
2060 $output .= $this->header();
2063 $message = '<p class="errormessage">' . $message . '</p>'.
2064 '<p class="errorcode"><a href="' . $moreinfourl . '">' .
2065 get_string('moreinformation') . '</a></p>';
2066 $output .= $this->box($message, 'errorbox');
2068 if (debugging('', DEBUG_DEVELOPER)) {
2069 if (!empty($debuginfo)) {
2070 $debuginfo = s($debuginfo); // removes all nasty JS
2071 $debuginfo = str_replace("\n", '<br />', $debuginfo); // keep newlines
2072 $output .= $this->notification('<strong>Debug info:</strong> '.$debuginfo, 'notifytiny');
2074 if (!empty($backtrace)) {
2075 $output .= $this->notification('<strong>Stack trace:</strong> '.format_backtrace($backtrace), 'notifytiny');
2077 if ($obbuffer !== '' ) {
2078 $output .= $this->notification('<strong>Output buffer:</strong> '.s($obbuffer), 'notifytiny');
2082 if (!empty($link)) {
2083 $output .= $this->continue_button($link);
2086 $output .= $this->footer();
2088 // Padding to encourage IE to display our error page, rather than its own.
2089 $output .= str_repeat(' ', 512);
2095 * Output a notification (that is, a status message about something that has
2098 * @param string $message the message to print out
2099 * @param string $classes normally 'notifyproblem' or 'notifysuccess'.
2100 * @return string the HTML to output.
2102 public function notification($message, $classes = 'notifyproblem') {
2103 return html_writer::tag('div', clean_text($message), array('class' => renderer_base::prepare_classes($classes)));
2107 * Print a continue button that goes to a particular URL.
2109 * @param string|moodle_url $url The url the button goes to.
2110 * @return string the HTML to output.
2112 public function continue_button($url) {
2113 if (!($url instanceof moodle_url)) {
2114 $url = new moodle_url($url);
2116 $button = new single_button($url, get_string('continue'), 'get');
2117 $button->class = 'continuebutton';
2119 return $this->render($button);
2123 * Prints a single paging bar to provide access to other pages (usually in a search)
2125 * @param int $totalcount The total number of entries available to be paged through
2126 * @param int $page The page you are currently viewing
2127 * @param int $perpage The number of entries that should be shown per page
2128 * @param string|moodle_url $baseurl url of the current page, the $pagevar parameter is added
2129 * @param string $pagevar name of page parameter that holds the page number
2130 * @return string the HTML to output.
2132 public function paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar = 'page') {
2133 $pb = new paging_bar($totalcount, $page, $perpage, $baseurl, $pagevar);
2134 return $this->render($pb);
2138 * Internal implementation of paging bar rendering.
2139 * @param paging_bar $pagingbar
2142 protected function render_paging_bar(paging_bar $pagingbar) {
2144 $pagingbar = clone($pagingbar);
2145 $pagingbar->prepare($this, $this->page, $this->target);
2147 if ($pagingbar->totalcount > $pagingbar->perpage) {
2148 $output .= get_string('page') . ':';
2150 if (!empty($pagingbar->previouslink)) {
2151 $output .= ' (' . $pagingbar->previouslink . ') ';
2154 if (!empty($pagingbar->firstlink)) {
2155 $output .= ' ' . $pagingbar->firstlink . ' ...';
2158 foreach ($pagingbar->pagelinks as $link) {
2159 $output .= "  $link";
2162 if (!empty($pagingbar->lastlink)) {
2163 $output .= ' ...' . $pagingbar->lastlink . ' ';
2166 if (!empty($pagingbar->nextlink)) {
2167 $output .= '  (' . $pagingbar->nextlink . ')';
2171 return html_writer::tag('div', $output, array('class' => 'paging'));
2175 * Output the place a skip link goes to.
2176 * @param string $id The target name from the corresponding $PAGE->requires->skip_link_to($target) call.
2177 * @return string the HTML to output.
2179 public function skip_link_target($id = null) {
2180 return html_writer::tag('span', '', array('id' => $id));
2185 * @param string $text The text of the heading
2186 * @param int $level The level of importance of the heading. Defaulting to 2
2187 * @param string $classes A space-separated list of CSS classes
2188 * @param string $id An optional ID
2189 * @return string the HTML to output.
2191 public function heading($text, $level = 2, $classes = 'main', $id = null) {
2192 $level = (integer) $level;
2193 if ($level < 1 or $level > 6) {
2194 throw new coding_exception('Heading level must be an integer between 1 and 6.');
2196 return html_writer::tag('h' . $level, $text, array('id' => $id, 'class' => renderer_base::prepare_classes($classes)));
2201 * @param string $contents The contents of the box
2202 * @param string $classes A space-separated list of CSS classes
2203 * @param string $id An optional ID
2204 * @return string the HTML to output.
2206 public function box($contents, $classes = 'generalbox', $id = null) {
2207 return $this->box_start($classes, $id) . $contents . $this->box_end();
2211 * Outputs the opening section of a box.
2212 * @param string $classes A space-separated list of CSS classes
2213 * @param string $id An optional ID
2214 * @return string the HTML to output.
2216 public function box_start($classes = 'generalbox', $id = null) {
2217 $this->opencontainers->push('box', html_writer::end_tag('div'));
2218 return html_writer::start_tag('div', array('id' => $id,
2219 'class' => 'box ' . renderer_base::prepare_classes($classes)));
2223 * Outputs the closing section of a box.
2224 * @return string the HTML to output.
2226 public function box_end() {
2227 return $this->opencontainers->pop('box');
2231 * Outputs a container.
2232 * @param string $contents The contents of the box
2233 * @param string $classes A space-separated list of CSS classes
2234 * @param string $id An optional ID
2235 * @return string the HTML to output.
2237 public function container($contents, $classes = null, $id = null) {
2238 return $this->container_start($classes, $id) . $contents . $this->container_end();
2242 * Outputs the opening section of a container.
2243 * @param string $classes A space-separated list of CSS classes
2244 * @param string $id An optional ID
2245 * @return string the HTML to output.
2247 public function container_start($classes = null, $id = null) {
2248 $this->opencontainers->push('container', html_writer::end_tag('div'));
2249 return html_writer::start_tag('div', array('id' => $id,
2250 'class' => renderer_base::prepare_classes($classes)));
2254 * Outputs the closing section of a container.
2255 * @return string the HTML to output.
2257 public function container_end() {
2258 return $this->opencontainers->pop('container');
2262 * Make nested HTML lists out of the items
2264 * The resulting list will look something like this:
2268 * <<li>><div class='tree_item parent'>(item contents)</div>
2270 * <<li>><div class='tree_item'>(item contents)</div><</li>>
2276 * @param array[]tree_item $items
2277 * @param array[string]string $attrs html attributes passed to the top of
2279 * @return string HTML
2281 function tree_block_contents($items, $attrs=array()) {
2282 // exit if empty, we don't want an empty ul element
2283 if (empty($items)) {
2286 // array of nested li elements
2288 foreach ($items as $item) {
2289 // this applies to the li item which contains all child lists too
2290 $content = $item->content($this);
2291 $liclasses = array($item->get_css_type());
2292 if (!$item->forceopen || (!$item->forceopen && $item->collapse) || ($item->children->count()==0 && $item->nodetype==navigation_node::NODETYPE_BRANCH)) {
2293 $liclasses[] = 'collapsed';
2295 if ($item->isactive === true) {
2296 $liclasses[] = 'current_branch';
2298 $liattr = array('class'=>join(' ',$liclasses));
2299 // class attribute on the div item which only contains the item content
2300 $divclasses = array('tree_item');
2301 if ($item->children->count()>0 || $item->nodetype==navigation_node::NODETYPE_BRANCH) {
2302 $divclasses[] = 'branch';
2304 $divclasses[] = 'leaf';
2306 if (!empty($item->classes) && count($item->classes)>0) {
2307 $divclasses[] = join(' ', $item->classes);
2309 $divattr = array('class'=>join(' ', $divclasses));
2310 if (!empty($item->id)) {
2311 $divattr['id'] = $item->id;
2313 $content = html_writer::tag('p', $content, $divattr) . $this->tree_block_contents($item->children);
2314 if (!empty($item->preceedwithhr) && $item->preceedwithhr===true) {
2315 $content = html_writer::empty_tag('hr') . $content;
2317 $content = html_writer::tag('li', $content, $liattr);
2320 return html_writer::tag('ul', implode("\n", $lis), $attrs);
2324 * Return the navbar content so that it can be echoed out by the layout
2325 * @return string XHTML navbar
2327 public function navbar() {
2328 //return $this->page->navbar->content();
2330 $items = $this->page->navbar->get_items();
2334 $htmlblocks = array();
2335 // Iterate the navarray and display each node
2336 $itemcount = count($items);
2337 $separator = get_separator();
2338 for ($i=0;$i < $itemcount;$i++) {
2340 $item->hideicon = true;
2342 $content = html_writer::tag('li', $this->render($item));
2344 $content = html_writer::tag('li', $separator.$this->render($item));
2346 $htmlblocks[] = $content;
2349 //accessibility: heading for navbar list (MDL-20446)
2350 $navbarcontent = html_writer::tag('span', get_string('pagepath'), array('class'=>'accesshide'));
2351 $navbarcontent .= html_writer::tag('ul', join('', $htmlblocks));
2353 return $navbarcontent;
2356 protected function render_navigation_node(navigation_node $item) {
2357 $content = $item->get_content();
2358 $title = $item->get_title();
2359 if ($item->icon instanceof renderable && !$item->hideicon) {
2360 $icon = $this->render($item->icon);
2361 $content = $icon.$content; // use CSS for spacing of icons
2363 if ($item->helpbutton !== null) {
2364 $content = trim($item->helpbutton).html_writer::tag('span', $content, array('class'=>'clearhelpbutton'));
2366 if ($content === '') {
2369 if ($item->action instanceof action_link) {
2370 //TODO: to be replaced with something else
2371 $link = $item->action;
2372 if ($item->hidden) {
2373 $link->add_class('dimmed');
2375 $content = $this->output->render($link);
2376 } else if ($item->action instanceof moodle_url) {
2377 $attributes = array();
2378 if ($title !== '') {
2379 $attributes['title'] = $title;
2381 if ($item->hidden) {
2382 $attributes['class'] = 'dimmed_text';
2384 $content = html_writer::link($item->action, $content, $attributes);
2386 } else if (is_string($item->action) || empty($item->action)) {
2387 $attributes = array();
2388 if ($title !== '') {
2389 $attributes['title'] = $title;
2391 if ($item->hidden) {
2392 $attributes['class'] = 'dimmed_text';
2394 $content = html_writer::tag('span', $content, $attributes);
2400 * Accessibility: Right arrow-like character is
2401 * used in the breadcrumb trail, course navigation menu
2402 * (previous/next activity), calendar, and search forum block.
2403 * If the theme does not set characters, appropriate defaults
2404 * are set automatically. Please DO NOT
2405 * use < > » - these are confusing for blind users.
2408 public function rarrow() {
2409 return $this->page->theme->rarrow;
2413 * Accessibility: Right arrow-like character is
2414 * used in the breadcrumb trail, course navigation menu
2415 * (previous/next activity), calendar, and search forum block.
2416 * If the theme does not set characters, appropriate defaults
2417 * are set automatically. Please DO NOT
2418 * use < > » - these are confusing for blind users.
2421 public function larrow() {
2422 return $this->page->theme->larrow;
2426 * Returns the colours of the small MP3 player
2429 public function filter_mediaplugin_colors() {
2430 return $this->page->theme->filter_mediaplugin_colors;
2434 * Returns the colours of the big MP3 player
2437 public function resource_mp3player_colors() {
2438 return $this->page->theme->resource_mp3player_colors;
2442 * Returns the custom menu if one has been set
2444 * A custom menu can be configured by browsing to
2445 * Settings: Administration > Appearance > Themes > Theme settings
2446 * and then configuring the custommenu config setting as described.
2450 public function custom_menu() {
2452 if (empty($CFG->custommenuitems)) {
2455 $custommenu = new custom_menu();
2456 return $this->render_custom_menu($custommenu);
2460 * Renders a custom menu object (located in outputcomponents.php)
2462 * The custom menu this method produces makes use of the YUI3 menunav widget
2463 * and requires very specific html elements and classes.
2465 * @staticvar int $menucount
2466 * @param custom_menu $menu
2469 protected function render_custom_menu(custom_menu $menu) {
2470 static $menucount = 0;
2471 // If the menu has no children return an empty string
2472 if (!$menu->has_children()) {
2475 // Increment the menu count. This is used for ID's that get worked with
2476 // in JavaScript as is essential
2478 // Initialise this custom menu
2479 $this->page->requires->js_init_call('M.core_custom_menu.init', array('custom_menu_'.$menucount));
2480 // Build the root nodes as required by YUI
2481 $content = html_writer::start_tag('div', array('id'=>'custom_menu_'.$menucount, 'class'=>'yui3-menu yui3-menu-horizontal javascript-disabled'));
2482 $content .= html_writer::start_tag('div', array('class'=>'yui3-menu-content'));
2483 $content .= html_writer::start_tag('ul');
2484 // Render each child
2485 foreach ($menu->get_children() as $item) {
2486 $content .= $this->render_custom_menu_item($item);
2488 // Close the open tags
2489 $content .= html_writer::end_tag('ul');
2490 $content .= html_writer::end_tag('div');
2491 $content .= html_writer::end_tag('div');
2492 // Return the custom menu
2497 * Renders a custom menu node as part of a submenu
2499 * The custom menu this method produces makes use of the YUI3 menunav widget
2500 * and requires very specific html elements and classes.
2502 * @see render_custom_menu()
2504 * @staticvar int $submenucount
2505 * @param custom_menu_item $menunode
2508 protected function render_custom_menu_item(custom_menu_item $menunode) {
2509 // Required to ensure we get unique trackable id's
2510 static $submenucount = 0;
2511 if ($menunode->has_children()) {
2512 // If the child has menus render it as a sub menu
2514 $content = html_writer::start_tag('li');
2515 if ($menunode->get_url() !== null) {
2516 $url = $menunode->get_url();
2518 $url = '#cm_submenu_'.$submenucount;
2520 $content .= html_writer::link($url, $menunode->get_text(), array('class'=>'yui3-menu-label', 'title'=>$menunode->get_title()));
2521 $content .= html_writer::start_tag('div', array('id'=>'cm_submenu_'.$submenucount, 'class'=>'yui3-menu custom_menu_submenu'));
2522 $content .= html_writer::start_tag('div', array('class'=>'yui3-menu-content'));
2523 $content .= html_writer::start_tag('ul');
2524 foreach ($menunode->get_children() as $menunode) {
2525 $content .= $this->render_custom_menu_item($menunode);
2527 $content .= html_writer::end_tag('ul');
2528 $content .= html_writer::end_tag('div');
2529 $content .= html_writer::end_tag('div');
2530 $content .= html_writer::end_tag('li');
2532 // The node doesn't have children so produce a final menuitem
2533 $content = html_writer::start_tag('li', array('class'=>'yui3-menuitem'));
2534 if ($menunode->get_url() !== null) {
2535 $url = $menunode->get_url();
2539 $content .= html_writer::link($url, $menunode->get_text(), array('class'=>'yui3-menuitem-content', 'title'=>$menunode->get_title()));
2540 $content .= html_writer::end_tag('li');
2542 // Return the sub menu
2547 * Renders the image_gallery component and initialises its JavaScript
2549 * @param image_gallery $imagegallery
2552 protected function render_image_gallery(image_gallery $imagegallery) {
2553 $this->page->requires->yui_module(array('gallery-lightbox','gallery-lightbox-skin'),
2554 'Y.Lightbox.init', null, '2010.04.08-12-35');
2555 if (count($imagegallery->images) == 0) {
2558 $classes = array('image_gallery');
2559 if ($imagegallery->displayfirstimageonly) {
2560 $classes[] = 'oneimageonly';
2562 $content = html_writer::start_tag('div', array('class'=>join(' ', $classes)));
2563 foreach ($imagegallery->images as $image) {
2564 $content .= html_writer::tag('a', html_writer::empty_tag('img', $image->thumb), $image->link);
2566 $content .= html_writer::end_tag('div');
2575 * A renderer that generates output for command-line scripts.
2577 * The implementation of this renderer is probably incomplete.
2579 * @copyright 2009 Tim Hunt
2580 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2583 class core_renderer_cli extends core_renderer {
2585 * Returns the page header.
2586 * @return string HTML fragment
2588 public function header() {
2589 return $this->page->heading . "\n";
2593 * Returns a template fragment representing a Heading.
2594 * @param string $text The text of the heading
2595 * @param int $level The level of importance of the heading
2596 * @param string $classes A space-separated list of CSS classes
2597 * @param string $id An optional ID
2598 * @return string A template fragment for a heading
2600 public function heading($text, $level = 2, $classes = 'main', $id = null) {
2604 return '=>' . $text;
2606 return '-->' . $text;
2613 * Returns a template fragment representing a fatal error.
2614 * @param string $message The message to output
2615 * @param string $moreinfourl URL where more info can be found about the error
2616 * @param string $link Link for the Continue button
2617 * @param array $backtrace The execution backtrace
2618 * @param string $debuginfo Debugging information
2619 * @return string A template fragment for a fatal error
2621 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2622 $output = "!!! $message !!!\n";
2624 if (debugging('', DEBUG_DEVELOPER)) {
2625 if (!empty($debuginfo)) {
2626 $this->notification($debuginfo, 'notifytiny');
2628 if (!empty($backtrace)) {
2629 $this->notification('Stack trace: ' . format_backtrace($backtrace, true), 'notifytiny');
2635 * Returns a template fragment representing a notification.
2636 * @param string $message The message to include
2637 * @param string $classes A space-separated list of CSS classes
2638 * @return string A template fragment for a notification
2640 public function notification($message, $classes = 'notifyproblem') {
2641 $message = clean_text($message);
2642 if ($classes === 'notifysuccess') {
2643 return "++ $message ++\n";
2645 return "!! $message !!\n";
2651 * A renderer that generates output for ajax scripts.
2653 * This renderer prevents accidental sends back only json
2654 * encoded error messages, all other output is ignored.
2656 * @copyright 2010 Petr Skoda
2657 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
2660 class core_renderer_ajax extends core_renderer {
2662 * Returns a template fragment representing a fatal error.
2663 * @param string $message The message to output
2664 * @param string $moreinfourl URL where more info can be found about the error
2665 * @param string $link Link for the Continue button
2666 * @param array $backtrace The execution backtrace
2667 * @param string $debuginfo Debugging information
2668 * @return string A template fragment for a fatal error
2670 public function fatal_error($message, $moreinfourl, $link, $backtrace, $debuginfo = null) {
2673 $this->page->set_context(null); // ugly hack - make sure page context is set to something, we do not want bogus warnings here
2675 $e = new stdClass();
2676 $e->error = $message;
2677 $e->stacktrace = NULL;
2678 $e->debuginfo = NULL;
2679 $e->reproductionlink = NULL;
2680 if (!empty($CFG->debug) and $CFG->debug >= DEBUG_DEVELOPER) {
2681 $e->reproductionlink = $link;
2682 if (!empty($debuginfo)) {
2683 $e->debuginfo = $debuginfo;
2685 if (!empty($backtrace)) {
2686 $e->stacktrace = format_backtrace($backtrace, true);
2690 return json_encode($e);
2693 public function notification($message, $classes = 'notifyproblem') {
2696 public function redirect_message($encodedurl, $message, $delay, $debugdisableredirect) {
2699 public function header() {
2700 // unfortunately YUI iframe upload does not support application/json
2701 if (!empty($_FILES)) {
2702 @header('Content-type: text/plain');
2704 @header('Content-type: application/json');
2707 /// Headers to make it not cacheable and json
2708 @header('Cache-Control: no-store, no-cache, must-revalidate');
2709 @header('Cache-Control: post-check=0, pre-check=0', false);
2710 @header('Pragma: no-cache');
2711 @header('Expires: Mon, 20 Aug 1969 09:23:00 GMT');
2712 @header('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' GMT');
2713 @header('Accept-Ranges: none');
2716 public function footer() {
2719 public function heading($text, $level = 2, $classes = 'main', $id = null) {